:root {
  --bg: #06111d;
  --panel: #0c1d2f;
  --panel-soft: #11263b;
  --line: rgba(146, 179, 204, 0.18);
  --text: #eff8ff;
  --muted: #9fb6c9;
  --cyan: #27c7f4;
  --cyan-strong: #09aee1;
  --white: #fff;
  --radius-lg: 24px;
  --radius-md: 18px;
  --shadow: 0 28px 64px rgba(0, 0, 0, 0.24);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(39, 199, 244, 0.14), transparent 32%),
    linear-gradient(180deg, #06111d 0%, #081726 100%);
  font-family:
    "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

img {
  display: block;
  max-width: 100%;
}

.present-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 28px;
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand span {
  display: flex;
  flex-direction: column;
}

.brand strong {
  letter-spacing: 0.12em;
}

.brand small,
.topbar-actions a,
.hint,
.section-copy p,
.project-meta,
.scene-source,
#workspace-meta,
#viewer-meta {
  color: var(--muted);
}

.topbar-actions {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.present-layout,
.viewer-layout {
  display: grid;
  gap: 20px;
  padding: 22px 24px 30px;
}

.present-layout {
  max-width: 1380px;
  margin: 0 auto;
  grid-template-columns: minmax(260px, 300px) minmax(0, 1fr);
  align-items: start;
}

.viewer-layout {
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, 420px);
  align-items: start;
}

.card {
  background: rgba(12, 29, 47, 0.94);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.upload-card,
.navigator-card,
.workspace-head,
.scenes-card,
.viewer-stage,
.qa-card {
  padding: 20px;
}

.qa-card {
  padding: 14px 16px;
}

.viewer-stage {
  position: relative;
}

.studio-sidebar,
.viewer-side {
  display: grid;
  gap: 18px;
}

.studio-sidebar {
  position: sticky;
  top: 18px;
}

.navigator-card[hidden] {
  display: none;
}

.project-switcher-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  list-style: none;
}

.project-switcher-summary::-webkit-details-marker {
  display: none;
}

.project-switcher-body {
  margin-top: 16px;
}

.switcher-hint {
  color: var(--muted);
  font-size: 14px;
}

.section-copy h1,
.section-copy h2,
.viewer-head h1 {
  margin: 0 0 10px;
}

.viewer-head h1 {
  font-size: clamp(20px, 2.2vw, 28px);
  line-height: 1.08;
}

#viewer-meta {
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.35;
}

.viewer-status {
  display: none;
}

.section-copy.compact h2 {
  margin-bottom: 4px;
}

.section-copy.compact p {
  margin: 0;
  font-size: 13px;
  line-height: 1.45;
}

.eyebrow {
  display: inline-flex;
  margin-bottom: 8px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.field {
  display: grid;
  gap: 8px;
}

.field span {
  font-size: 14px;
}

.field input,
.field select,
.field textarea,
.qa-form textarea {
  width: 100%;
  padding: 12px 14px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
}

.upload-form,
.qa-form {
  display: grid;
  gap: 16px;
}

.file-drop {
  display: grid;
  gap: 8px;
  padding: 18px;
  border: 1px dashed rgba(39, 199, 244, 0.45);
  border-radius: 18px;
  cursor: pointer;
}

.file-drop input {
  display: none;
}

.button-primary,
.button-secondary,
.button-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 0;
  cursor: pointer;
  transition:
    transform 0.18s ease,
    opacity 0.18s ease,
    background 0.18s ease;
}

.button-primary:hover,
.button-secondary:hover,
.button-ghost:hover,
.project-item:hover,
.scene-button:hover {
  transform: translateY(-1px);
}

.button-primary {
  color: #03131c;
  background: linear-gradient(135deg, var(--cyan), #7de6ff);
  font-weight: 700;
}

.button-secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
}

.button-ghost {
  color: var(--cyan);
  background: transparent;
  border: 1px solid rgba(39, 199, 244, 0.3);
}

.button-danger {
  color: #c94a4a;
  border-color: rgba(201, 74, 74, 0.28);
}

.studio-rail {
  display: grid;
  gap: 14px;
  padding: 16px;
}

.studio-rail .section-copy h1 {
  font-size: clamp(22px, 2.6vw, 32px);
  line-height: 1.08;
}

.studio-rail .section-copy p,
.studio-rail .hint {
  font-size: 12px;
  line-height: 1.45;
}

.studio-rail-actions {
  display: grid;
  gap: 10px;
}

.studio-rail-actions .button-primary,
.studio-rail-actions .button-ghost {
  min-height: 42px;
}

.navigator-card {
  display: grid;
  gap: 14px;
  padding: 16px;
}

.navigator-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.navigator-tab {
  min-height: 38px;
  padding: 0 12px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  cursor: pointer;
}

.navigator-tab.active {
  color: #03131c;
  background: linear-gradient(135deg, var(--cyan), #7de6ff);
  border-color: transparent;
  font-weight: 700;
}

.navigator-tab:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.navigator-panel {
  display: grid;
  gap: 12px;
}

.navigator-panel[hidden] {
  display: none !important;
}

.navigator-empty {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.create-panel {
  display: grid;
  gap: 16px;
  padding: 16px;
  border: 1px solid rgba(39, 199, 244, 0.16);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
}

.create-panel-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.compact-upload-form {
  gap: 12px;
}

.compact-file-drop {
  padding: 14px 16px;
}

.create-panel-advanced {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.6);
}

.create-panel-advanced > summary {
  list-style: none;
  padding: 12px 14px;
  color: var(--ink-soft);
  font-size: 0.94rem;
  font-weight: 600;
  cursor: pointer;
}

.create-panel-advanced > summary::-webkit-details-marker {
  display: none;
}

.create-panel-advanced-grid {
  display: grid;
  gap: 12px;
  padding: 0 14px 14px;
}

.vision-toggle {
  grid-column: 1 / -1;
}

.panel-close {
  width: 38px;
  height: 38px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  cursor: pointer;
}

.panel-close:hover {
  color: var(--text);
}

.card-lite {
  margin-top: 18px;
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border: 1px solid rgba(39, 199, 244, 0.18);
  border-radius: 18px;
  background: rgba(39, 199, 244, 0.05);
}

.card-lite h2 {
  margin: 6px 0 8px;
}

.card-lite p {
  margin: 0;
  color: var(--muted);
}

.project-list,
.scene-list,
.qa-messages {
  display: grid;
  gap: 14px;
}

.project-item-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
}

.project-item,
.scene-button {
  width: 100%;
  padding: 12px 14px;
  color: var(--text);
  text-align: left;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  cursor: pointer;
}

.project-item {
  display: flex;
  align-items: center;
  min-width: 0;
  width: auto;
  flex: 1 1 auto;
  gap: 10px;
}

.project-item-copy {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  width: 100%;
  flex: 1 1 auto;
}

.project-item strong,
.project-meta {
  white-space: nowrap;
}

.project-item strong {
  overflow: hidden;
  text-overflow: ellipsis;
}

.project-meta {
  flex: 0 0 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

.project-delete-button {
  width: 30px;
  height: 30px;
  padding: 0;
  display: grid;
  place-items: center;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 14px;
  cursor: pointer;
  white-space: nowrap;
  font-size: 18px;
  line-height: 1;
}

.project-delete-button:hover {
  color: #c94a4a;
  border-color: rgba(201, 74, 74, 0.35);
}

.project-item.active,
.scene-button.active {
  border-color: rgba(39, 199, 244, 0.5);
  background: rgba(39, 199, 244, 0.12);
}

.project-list {
  max-height: min(28vh, 320px);
  padding-right: 6px;
  overflow: auto;
}

.studio-empty {
  display: grid;
  gap: 16px;
  align-content: center;
  justify-items: start;
  min-height: 44vh;
  padding: 28px;
  text-align: left;
  border: 1px dashed rgba(39, 199, 244, 0.16);
  border-radius: 28px;
  background:
    linear-gradient(135deg, rgba(39, 199, 244, 0.06), transparent 36%),
    rgba(10, 24, 38, 0.55);
}

.studio-empty h2,
.studio-empty p {
  margin: 0;
}

.studio-empty-copy {
  display: grid;
  gap: 10px;
  max-width: 56ch;
}

.studio-workspace {
  display: grid;
  gap: 18px;
  min-height: 0;
}

.workspace-summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, auto);
  gap: 18px;
}

.workspace-summary-copy {
  min-width: 0;
}

.workspace-summary-copy h2 {
  margin-bottom: 6px;
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.06;
}

.workspace-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.workspace-toolbar {
  display: grid;
  gap: 10px;
  justify-items: end;
}

.workspace-actions-primary,
.workspace-actions-secondary {
  justify-content: flex-end;
}

.workspace-actions .button-primary,
.workspace-actions .button-secondary,
.workspace-actions .button-ghost {
  min-height: 42px;
  padding: 0 16px;
}

.workspace-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
}

.workspace-tab {
  display: grid;
  gap: 4px;
  min-height: 84px;
  padding: 14px 16px;
  align-content: start;
  text-align: left;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 20px;
  cursor: pointer;
}

.workspace-tab.active {
  color: #03131c;
  background: linear-gradient(135deg, var(--cyan), #7de6ff);
  border-color: transparent;
  font-weight: 700;
}

.workspace-tab strong {
  font-size: 16px;
  line-height: 1.15;
}

.workspace-tab small,
.workspace-tab-kicker {
  font-size: 12px;
  line-height: 1.2;
}

.workspace-tab-kicker {
  color: inherit;
  opacity: 0.72;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.workspace-panel[hidden] {
  display: none !important;
}

.workspace-settings {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.viewer-setup-card {
  display: grid;
  gap: 14px;
  padding: 20px;
}

.viewer-setup-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.viewer-setup-span-2 {
  grid-column: span 2;
}

.viewer-setup-core .toggle-field {
  min-height: 88px;
}

.viewer-setup-advanced {
  display: grid;
  gap: 14px;
  padding: 14px 16px 16px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.025);
}

.viewer-setup-advanced summary {
  display: grid;
  gap: 4px;
  cursor: pointer;
  list-style: none;
}

.viewer-setup-advanced summary::-webkit-details-marker {
  display: none;
}

.viewer-setup-advanced summary span {
  color: var(--text);
  font-weight: 700;
}

.viewer-setup-advanced summary small {
  color: var(--muted);
  line-height: 1.4;
}

.viewer-setup-advanced-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.toggle-field {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  min-height: 92px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
}

.toggle-field input {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--cyan);
}

.toggle-field span {
  display: grid;
  gap: 4px;
}

.toggle-field strong {
  font-size: 15px;
}

.toggle-field small {
  color: var(--muted);
  line-height: 1.45;
}

.viewer-setup-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.viewer-setup-footer-copy {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.viewer-setup-footer .hint {
  margin: 0;
  max-width: 72ch;
}

.viewer-setup-status {
  margin: 0;
  color: var(--cyan);
  font-size: 13px;
  line-height: 1.4;
}

.viewer-setup-footer-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.field-readonly {
  align-content: start;
}

.field-readonly strong {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0 14px;
  color: var(--cyan);
  background: rgba(39, 199, 244, 0.08);
  border: 1px solid rgba(39, 199, 244, 0.2);
  border-radius: 14px;
}

.active-scene-layout {
  display: grid;
  grid-template-columns: minmax(320px, 0.9fr) minmax(0, 1.1fr);
  gap: 16px;
  align-items: start;
}

.project-settings-card,
.active-scene-card {
  padding: 20px;
}

.scene-preview {
  aspect-ratio: 16 / 9;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  overflow: hidden;
}

.scene-preview img,
.slide-stage img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.scene-status {
  color: var(--cyan);
  font-size: 13px;
}

.scene-editor-panel,
.scene-preview-panel {
  display: grid;
  gap: 16px;
}

.scene-editor-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.scene-editor-head strong {
  display: block;
  margin-bottom: 6px;
  font-size: 18px;
}

.scene-nav-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.button-mini {
  min-height: 38px;
  padding: 0 14px;
}

/* Audience webinar preview shell */
.webinar-shell {
  background:
    radial-gradient(circle at top, rgba(39, 199, 244, 0.16), transparent 28%),
    linear-gradient(180deg, #eef7fb 0%, #f7fbfd 45%, #eef5f7 100%);
  color: #20293a;
}

.webinar-shell .present-topbar {
  border-bottom-color: rgba(34, 79, 110, 0.08);
  background: rgba(255, 255, 255, 0.68);
}

.webinar-shell .brand strong,
.webinar-shell .brand small,
.webinar-shell .topbar-actions a {
  color: #31435a;
}

.webinar-shell .topbar-actions a {
  border-bottom: 1px solid transparent;
}

.webinar-shell .topbar-actions a:hover {
  border-bottom-color: rgba(49, 67, 90, 0.35);
}


.scene-list-compact {
  max-height: min(18vh, 170px);
  padding-right: 6px;
  overflow: auto;
}

.scene-button-compact {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 12px;
}

.scene-index-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  color: var(--cyan);
  background: rgba(39, 199, 244, 0.12);
  border-radius: 12px;
  font-size: 13px;
  font-weight: 700;
}

.scene-button-copy {
  display: grid;
  min-width: 0;
  gap: 3px;
}

.scene-button-copy strong,
.scene-button-copy span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.scene-button-copy span {
  color: var(--muted);
  font-size: 13px;
}

.scene-details {
  display: grid;
  gap: 14px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
}

.scene-details summary {
  cursor: pointer;
  color: var(--muted);
}

.viewer-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}

.viewer-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.viewer-visual {
  position: relative;
}

.slide-stage {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 22px;
}

.viewer-intro {
  position: absolute;
  inset: 0;
  z-index: 3;
  overflow: auto;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: 18px;
  padding: 18px;
  background:
    linear-gradient(145deg, rgba(6, 17, 29, 0.82), rgba(12, 29, 47, 0.9)),
    rgba(6, 17, 29, 0.72);
  border: 1px solid rgba(39, 199, 244, 0.18);
  border-radius: 22px;
  backdrop-filter: blur(18px);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.02);
}

.viewer-intro[hidden] {
  display: none !important;
}

.viewer-intro-media {
  min-width: 0;
  overflow: hidden;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
}

.viewer-intro-media video {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.viewer-intro-media iframe {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 100%;
  border: 0;
}

.viewer-intro-copy {
  display: grid;
  align-content: center;
  gap: 12px;
  padding: 8px 6px 8px 0;
}

.viewer-intro-copy h2 {
  margin: 0;
  font-size: clamp(24px, 3vw, 34px);
}

.viewer-intro-copy p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.viewer-intro-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.intro-status {
  color: var(--cyan);
  font-size: 14px;
}

.viewer-assistant-card {
  display: grid;
  gap: 16px;
  min-height: calc(100vh - 150px);
  padding: 18px 0 0 24px;
  background: transparent;
  border: 0;
  border-left: 1px solid rgba(20, 20, 30, 0.08);
  border-radius: 0;
  box-shadow: none;
}

.viewer-assistant-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.viewer-assistant-head h2 {
  margin: 0 0 10px;
  font-size: clamp(22px, 2.2vw, 30px);
  line-height: 1.08;
}

.viewer-assistant-head p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.viewer-assistant-status {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  color: #03131c;
  background: linear-gradient(135deg, var(--cyan), #7de6ff);
  border-radius: 999px;
  font-weight: 700;
  white-space: nowrap;
}

.viewer-assistant-messages {
  max-height: min(48vh, 580px);
  padding-right: 6px;
  overflow: auto;
}

.viewer-assistant-composer {
  gap: 10px;
}

.viewer-assistant-composer textarea {
  min-height: 76px;
  resize: vertical;
}

.assistant-note {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.qa-message {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.qa-message .message-avatar {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  overflow: hidden;
  color: var(--cyan);
  background: rgba(39, 199, 244, 0.12);
  border-radius: 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.qa-message.user .message-avatar {
  color: #03131c;
  background: linear-gradient(135deg, var(--cyan), #7de6ff);
}

.qa-message .message-body {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.qa-message .message-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.qa-message .message-meta strong {
  font-size: 14px;
}

.qa-message .message-meta span {
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}

.qa-message p {
  margin: 0;
  line-height: 1.6;
}

.qa-message .message-sources {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.qa-message.user {
  background: rgba(39, 199, 244, 0.12);
}

.qa-message {
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 16px;
}

.qa-message.cohost {
  background: linear-gradient(135deg, rgba(64, 126, 255, 0.16), rgba(39, 199, 244, 0.08));
  border: 1px solid rgba(82, 146, 255, 0.28);
  box-shadow: 0 12px 30px rgba(15, 27, 42, 0.14);
}

.qa-message.cohost .message-avatar {
  color: #03131c;
  background: linear-gradient(135deg, #7de6ff, #78a6ff);
}

.qa-message.cohost .message-meta span {
  color: #6f86c7;
}

.qa-message.qa {
  background: rgba(255, 255, 255, 0.04);
}

.qa-message strong {
  display: block;
  margin-bottom: 6px;
}

.qa-title {
  margin-bottom: 10px;
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.45;
}

.qa-message.user {
  background: rgba(39, 199, 244, 0.12);
}

.qa-suggestions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 8px 0;
}

.qa-suggestions button {
  padding: 8px 12px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  cursor: pointer;
}

.qa-form {
  gap: 10px;
}

.qa-form textarea {
  min-height: 72px;
  padding: 10px 12px;
}

.viewer-qa-popup {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: grid;
  place-items: center;
  padding: 20px;
}

.viewer-qa-popup[hidden] {
  display: none !important;
}

.viewer-qa-popup-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 8, 14, 0.78);
  backdrop-filter: blur(18px);
}

.viewer-qa-popup-panel {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 14px;
  width: min(1120px, 94vw);
  height: min(84vh, 860px);
  padding: 18px;
  background: linear-gradient(180deg, rgba(10, 24, 38, 0.98), rgba(7, 19, 30, 0.98));
  border: 1px solid rgba(39, 199, 244, 0.24);
  border-radius: 28px;
  box-shadow: 0 34px 90px rgba(0, 0, 0, 0.5);
}

.viewer-qa-popup-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.viewer-qa-popup-actions {
  display: grid;
  justify-items: end;
  gap: 10px;
}

.viewer-qa-popup-head h2 {
  margin: 0 0 8px;
  font-size: clamp(22px, 2.2vw, 30px);
  line-height: 1.08;
}

.viewer-qa-popup-head p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.viewer-qa-popup-status {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  color: #03131c;
  background: linear-gradient(135deg, var(--cyan), #7de6ff);
  border-radius: 999px;
  font-weight: 700;
  white-space: nowrap;
}

.viewer-qa-popup-close {
  min-height: 40px;
}

.viewer-qa-popup iframe {
  width: 100%;
  height: 100%;
  min-height: 0;
  border: 0;
  border-radius: 22px;
  background: #06111d;
}

@media (max-width: 1120px) {
  .present-layout,
  .viewer-layout {
    grid-template-columns: 1fr;
  }

  .workspace-summary {
    grid-template-columns: 1fr;
  }

  .workspace-toolbar {
    justify-items: start;
  }

  .workspace-actions-primary,
  .workspace-actions-secondary {
    justify-content: flex-start;
  }

  .scene-list-compact {
    max-height: 180px;
  }

  .project-list {
    max-height: 220px;
  }

  .active-scene-layout {
    grid-template-columns: 1fr;
  }

  .viewer-intro {
    grid-template-columns: 1fr;
  }

  .viewer-qa-popup-panel {
    width: min(96vw, 1120px);
    height: min(86vh, 920px);
  }

  .workspace-settings {
    grid-template-columns: 1fr 1fr;
  }

  .workspace-tabs {
    grid-template-columns: 1fr;
  }

  .viewer-setup-grid {
    grid-template-columns: 1fr;
  }

  .viewer-setup-span-2 {
    grid-column: auto;
  }

  .viewer-setup-advanced-grid {
    grid-template-columns: 1fr;
  }

  .viewer-setup-footer {
    flex-direction: column;
    align-items: stretch;
  }

  .studio-sidebar {
    position: static;
  }

  .card-lite {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (max-width: 760px) {
  .present-topbar,
  .workspace-summary,
  .viewer-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .present-layout,
  .viewer-layout {
    padding: 20px 16px 28px;
  }

  .workspace-toolbar,
  .workspace-actions-primary,
  .workspace-actions-secondary {
    justify-items: stretch;
    justify-content: stretch;
  }

  .workspace-actions .button-primary,
  .workspace-actions .button-secondary,
  .workspace-actions .button-ghost {
    width: 100%;
  }

  .scene-editor-head {
    flex-direction: column;
  }

  .scene-list-compact {
    max-height: 180px;
  }

  .viewer-intro {
    padding: 16px;
  }

  .viewer-qa-popup {
    padding: 12px;
  }

  .viewer-qa-popup-panel {
    width: 100%;
    height: 88vh;
    padding: 14px;
    border-radius: 22px;
  }

  .viewer-qa-popup-head {
    flex-direction: column;
  }

  .workspace-settings {
    grid-template-columns: 1fr;
  }

  .toggle-field {
    min-height: 0;
  }

  .studio-empty {
    justify-items: stretch;
    padding: 24px;
  }
}

/* Studio V2: clean left navigation, no floating cards */
.present-shell {
  --studio-bg: #fcfcf8;
  --studio-surface: #ffffff;
  --studio-sidebar: #f6f6f1;
  --studio-text: #171717;
  --studio-muted: #66635f;
  --studio-line: rgba(17, 24, 39, 0.1);
  --studio-line-strong: rgba(17, 24, 39, 0.16);
  --studio-accent: #2457f5;
  --studio-accent-soft: rgba(36, 87, 245, 0.08);
  --studio-accent-strong: #2149cb;
}

.present-shell body,
.present-shell {
  color: var(--studio-text);
}

.present-shell {
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(255, 147, 92, 0.18), transparent 28%),
    radial-gradient(circle at top right, rgba(36, 87, 245, 0.12), transparent 32%),
    linear-gradient(180deg, #fcf8f1 0%, #f7f3eb 46%, #fffdf8 100%);
  font-family: "Instrument Sans", system-ui, sans-serif;
}

.present-shell .present-topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 76px;
  padding: 14px 28px;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--studio-line);
  backdrop-filter: blur(12px);
}

.present-shell .brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.present-shell .brand img {
  width: 148px;
  height: 38px;
  object-fit: cover;
  object-position: center;
}

.present-shell .studio-sidebar h1,
.present-shell .studio-main h2,
.present-shell .workspace-summary-copy h2 {
  font-family: "Space Grotesk", "Instrument Sans", sans-serif;
  letter-spacing: -0.04em;
}

.present-shell .brand small,
.present-shell .topbar-actions a,
.present-shell .hint,
.present-shell .sidebar-copy,
.present-shell .navigator-empty,
.present-shell #workspace-meta,
.present-shell .scene-source,
.present-shell .project-meta,
.present-shell .viewer-setup-status {
  color: var(--studio-muted);
}

.present-shell .topbar-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.present-shell .topbar-actions a {
  font-weight: 600;
}

.present-shell .present-layout {
  display: grid;
  grid-template-columns: 292px minmax(0, 1fr);
  gap: 0;
  max-width: none;
  padding: 0;
  min-height: calc(100vh - 76px);
}

.present-shell .studio-sidebar {
  position: sticky;
  top: 76px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  min-height: calc(100vh - 76px);
  padding: 26px 18px 28px;
  background: var(--studio-sidebar);
  border-right: 1px solid var(--studio-line);
}

.present-shell .studio-sidebar-section {
  display: grid;
  gap: 12px;
}

.present-shell .studio-sidebar-intro {
  order: 1;
}

.present-shell .studio-function-nav {
  order: 2;
}

.present-shell #navigator-card {
  order: 3;
}

.present-shell .studio-sidebar-intro {
  gap: 10px;
}

.present-shell .sidebar-section-head {
  display: grid;
  gap: 2px;
}

.present-shell .sidebar-label {
  margin: 0;
  color: var(--studio-accent);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.present-shell .studio-sidebar h1 {
  margin: 0;
  font-size: clamp(2rem, 3vw, 2.8rem);
  line-height: 0.98;
}

.present-shell .studio-sidebar h2,
.present-shell .workspace-section-head h2,
.present-shell .workspace-summary-copy h2,
.present-shell .create-panel h2,
.present-shell .studio-empty h2 {
  margin: 0;
  color: var(--studio-text);
}

.present-shell .studio-sidebar h2 {
  font-size: 1.02rem;
  font-family: "Instrument Sans", system-ui, sans-serif;
  letter-spacing: -0.02em;
}

.present-shell .sidebar-copy,
.present-shell .create-panel-copy,
.present-shell .studio-empty p,
.present-shell .workspace-section-head p {
  margin: 0;
  color: var(--studio-muted);
  line-height: 1.55;
}

.present-shell .studio-sidebar-status {
  order: 4;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--studio-line);
}

.present-shell .studio-main {
  min-width: 0;
  padding: 28px 42px 56px;
  background: rgba(255, 255, 255, 0.68);
}

.present-shell .create-panel,
.present-shell .studio-empty,
.present-shell .workspace-head,
.present-shell .workspace-panel {
  margin: 0 0 28px;
  padding: 0 0 28px;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--studio-line);
  border-radius: 0;
  box-shadow: none;
}

.present-shell .studio-empty {
  display: grid;
  justify-items: start;
  gap: 14px;
  min-height: 0;
}

.present-shell .workspace-summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: start;
}

.present-shell .workspace-summary-copy {
  display: grid;
  gap: 8px;
}

.present-shell .workspace-summary-copy h2 {
  font-size: clamp(2.2rem, 4.6vw, 4rem);
  line-height: 0.98;
}

.present-shell .workspace-toolbar {
  display: grid;
  gap: 10px;
  justify-items: end;
}

.present-shell .workspace-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.present-shell .workspace-section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 20px;
}

.present-shell .active-scene-layout {
  display: grid;
  grid-template-columns: minmax(320px, 0.92fr) minmax(0, 1.08fr);
  gap: 26px;
  align-items: start;
}

.present-shell .scene-preview {
  overflow: hidden;
  border: 1px solid var(--studio-line);
  border-radius: 18px;
  background: #fff;
}

.present-shell .scene-preview img {
  width: 100%;
  height: auto;
}

.present-shell .scene-editor-panel,
.present-shell .scene-preview-panel {
  display: grid;
  gap: 14px;
}

.present-shell .scene-editor-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
}

.present-shell .scene-editor-head strong,
.present-shell .scene-status {
  display: block;
}

.present-shell .scene-status {
  margin-top: 4px;
  color: var(--studio-accent);
  font-size: 0.92rem;
}

.present-shell .field {
  display: grid;
  gap: 8px;
}

.present-shell .field span {
  color: var(--studio-text);
  font-size: 0.93rem;
  font-weight: 600;
}

.present-shell .field input,
.present-shell .field select,
.present-shell .field textarea {
  width: 100%;
  padding: 13px 14px;
  color: var(--studio-text);
  background: var(--studio-surface);
  border: 1px solid var(--studio-line-strong);
  border-radius: 14px;
}

.present-shell .field textarea {
  min-height: 320px;
  resize: vertical;
}

.present-shell .field input::placeholder,
.present-shell .field textarea::placeholder {
  color: rgba(102, 99, 95, 0.7);
}

.present-shell .upload-form {
  display: grid;
  gap: 16px;
}

.present-shell .upload-row {
  display: grid;
  grid-template-columns: minmax(240px, 340px) minmax(300px, 440px);
  gap: 18px;
  align-items: stretch;
}

.present-shell .upload-title-field {
  align-content: start;
}

.present-shell .file-drop {
  position: relative;
  display: grid;
  justify-items: start;
  align-content: center;
  gap: 8px;
  min-height: 220px;
  padding: 24px;
  background:
    radial-gradient(circle at top, rgba(135, 213, 255, 0.28), transparent 46%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(253, 244, 255, 0.92));
  border: 1px solid var(--studio-line-strong);
  border-radius: 22px;
  cursor: pointer;
}

.present-shell .file-drop input {
  display: none;
}

.present-shell .file-drop-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  color: var(--studio-text);
  font-size: 2.3rem;
  line-height: 1;
  border: 2px solid rgba(23, 23, 23, 0.85);
  border-radius: 999px;
}

.present-shell .create-panel-advanced,
.present-shell .viewer-setup-advanced,
.present-shell .scene-details {
  border: 1px solid var(--studio-line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.7);
}

.present-shell .create-panel-advanced > summary,
.present-shell .viewer-setup-advanced > summary,
.present-shell .scene-details > summary {
  list-style: none;
  padding: 12px 14px;
  color: var(--studio-muted);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
}

.present-shell .create-panel-advanced > summary::-webkit-details-marker,
.present-shell .viewer-setup-advanced > summary::-webkit-details-marker {
  display: none;
}

.present-shell .create-panel-advanced-grid,
.present-shell .viewer-setup-advanced-grid {
  display: grid;
  gap: 14px;
  padding: 0 14px 14px;
}

.present-shell .create-panel-advanced-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.present-shell .vision-toggle {
  grid-column: 1 / -1;
}

.present-shell .viewer-setup-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.present-shell .viewer-setup-span-2 {
  grid-column: span 2;
}

.present-shell .toggle-field {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
  padding: 14px;
  border: 1px solid var(--studio-line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.55);
}

.present-shell .toggle-field input {
  margin-top: 3px;
  accent-color: var(--studio-accent);
}

.present-shell .toggle-field strong {
  display: block;
  margin-bottom: 4px;
}

.present-shell .toggle-field small {
  color: var(--studio-muted);
}

.present-shell .viewer-setup-footer {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  margin-top: 18px;
}

.present-shell .workspace-settings {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.present-shell .workspace-narrative-settings {
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  align-items: start;
}

.present-shell .narrative-settings-footer {
  grid-column: 1 / -1;
}

.present-shell .workspace-settings-form {
  display: grid;
  gap: 14px;
}

.present-shell .workspace-voice-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.present-shell .workspace-project-voice-grid {
  margin-top: 16px;
}

.present-shell .voice-summary-card {
  display: grid;
  gap: 10px;
  padding: 16px 18px;
  border: 1px solid var(--studio-line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.64);
}

.present-shell .voice-version-manager {
  grid-column: 1 / -1;
  display: grid;
  gap: 10px;
  padding-top: 4px;
}

.present-shell .voice-version-list {
  display: grid;
  gap: 10px;
}

.present-shell .voice-version-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 14px;
  border: 1px solid var(--studio-line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.68);
}

.present-shell .voice-version-item-copy {
  min-width: 0;
  display: grid;
  gap: 4px;
}

.present-shell .voice-version-item-head {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.present-shell .voice-version-item-head strong {
  font-size: 0.95rem;
  line-height: 1.15;
  letter-spacing: -0.015em;
}

.present-shell .voice-version-item-copy p {
  margin: 0;
  color: var(--studio-muted);
  font-size: 0.82rem;
  line-height: 1.35;
}

.present-shell .voice-version-item-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
}

.present-shell .voice-version-item-actions .button-mini {
  min-height: 34px;
}

.present-shell .voice-summary-card-actions {
  align-content: start;
}

.present-shell .voice-summary-label {
  margin: 0;
  color: var(--studio-v3-muted);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.present-shell .voice-routing-stack {
  display: grid;
  gap: 10px;
}

.present-shell .voice-routing-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.72);
}

.present-shell .voice-routing-row span {
  color: var(--studio-muted);
}

.present-shell .voice-routing-row strong {
  color: var(--studio-text);
  font-weight: 700;
  text-align: right;
}

.present-shell .preview-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.9fr) minmax(0, 0.9fr);
  gap: 14px;
}

.present-shell .preview-launch-card {
  display: grid;
  gap: 12px;
  min-height: 100%;
  padding: 20px;
  border: 1px solid rgba(71, 93, 255, 0.12);
  border-radius: 24px;
  background:
    radial-gradient(circle at top left, rgba(71, 93, 255, 0.12), transparent 34%),
    radial-gradient(circle at bottom right, rgba(245, 130, 88, 0.14), transparent 28%),
    rgba(255, 255, 255, 0.72);
  box-shadow: 0 12px 30px rgba(82, 68, 38, 0.08);
}

.present-shell .preview-launch-card-primary {
  border-color: rgba(71, 93, 255, 0.2);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(248, 244, 236, 0.96)),
    radial-gradient(circle at top right, rgba(71, 93, 255, 0.18), transparent 34%);
}

.present-shell .preview-launch-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--studio-v3-accent);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.present-shell .preview-launch-brand img {
  display: block;
  flex: 0 0 auto;
}

.present-shell .preview-launch-card strong {
  font-size: 1.35rem;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.present-shell .preview-launch-card .hint {
  margin: 0;
}

.present-shell .preview-launch-meta {
  display: grid;
  gap: 6px;
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.72);
}

.present-shell .preview-launch-meta span {
  color: var(--studio-muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.present-shell .preview-launch-meta strong {
  font-size: 1rem;
  line-height: 1.2;
}

.present-shell .preview-launch-button {
  justify-self: start;
}

.present-shell .narrative-review-card {
  align-self: start;
  min-height: 100%;
}

.present-shell .workspace-avatar-settings {
  grid-template-columns: minmax(0, 1fr);
}

.present-shell .workspace-avatar-opening-toggle {
  margin-top: 4px;
}

.present-shell .opening-greeting-script-tools {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: 14px;
}

.present-shell .opening-greeting-name-field {
  max-width: 380px;
}

.present-shell .opening-greeting-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.present-shell .avatar-opening-version-manager {
  display: grid;
  gap: 10px;
  margin-top: 16px;
  padding: 18px 20px;
  border: 1px solid var(--studio-v3-line);
  border-radius: 20px;
  background:
    radial-gradient(circle at top right, rgba(47, 92, 255, 0.06), transparent 28%),
    rgba(255, 255, 255, 0.82);
}

.present-shell .avatar-settings-status-inline {
  margin-top: 8px;
}

.present-shell .opening-version-list {
  display: grid;
  gap: 10px;
}

.present-shell .opening-version-item {
  display: grid;
  gap: 10px;
  padding: 14px 16px;
  border: 1px solid var(--studio-line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.82);
}

.present-shell .opening-version-item-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
}

.present-shell .opening-version-item-copy {
  display: grid;
  gap: 4px;
}

.present-shell .opening-version-item-copy strong {
  font-size: 1rem;
  line-height: 1.15;
}

.present-shell .opening-version-item-meta {
  color: var(--studio-muted);
  font-size: 0.82rem;
  line-height: 1.35;
}

.present-shell .opening-version-item-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.present-shell .avatar-opening-preview {
  width: 100%;
  min-height: 220px;
  border: 1px solid var(--studio-v3-line);
  border-radius: 16px;
  background: #0d1422;
  object-fit: cover;
}

.present-shell .workspace-avatar-settings textarea {
  min-height: 150px;
  resize: vertical;
}

.present-shell .field-readonly {
  align-content: start;
  padding: 14px;
  border: 1px solid var(--studio-line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.55);
}

.present-shell .field-readonly strong {
  display: block;
  margin-top: 6px;
  font-size: 1.05rem;
}

.present-shell .navigator-tabs {
  display: flex;
  gap: 8px;
}

.present-shell .navigator-panel {
  display: grid;
  gap: 10px;
}

.present-shell .project-list,
.present-shell .scene-list {
  display: grid;
  gap: 6px;
  max-height: 148px;
  overflow: auto;
  padding-right: 4px;
}

.present-shell .project-item,
.present-shell .scene-button,
.present-shell .workspace-tab,
.present-shell .navigator-tab {
  width: 100%;
  color: var(--studio-text);
  text-align: left;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 14px;
}

.present-shell .project-item,
.present-shell .scene-button {
  padding: 12px 13px;
}

.present-shell .navigator-tab {
  min-height: 40px;
  padding: 0 12px;
  font-weight: 600;
}

.present-shell .workspace-tabs {
  display: grid;
  gap: 8px;
}

.present-shell .workspace-tab {
  display: grid;
  gap: 4px;
  padding: 12px 13px;
}

.present-shell .workspace-tab strong {
  font-size: 0.98rem;
  line-height: 1.18;
}

.present-shell .workspace-tab small,
.present-shell .workspace-tab-kicker,
.present-shell .project-meta,
.present-shell .scene-button-copy span {
  color: var(--studio-muted);
  font-size: 0.84rem;
  line-height: 1.3;
}

.present-shell .workspace-tab-kicker {
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.present-shell .project-item strong,
.present-shell .scene-button strong {
  display: block;
  margin-bottom: 0;
  font-size: 0.95rem;
}

.present-shell .scene-button {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}

.present-shell .scene-index-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  color: var(--studio-muted);
  font-size: 0.85rem;
  font-weight: 700;
  background: rgba(17, 24, 39, 0.04);
  border-radius: 10px;
}

.present-shell .navigator-tab.active,
.present-shell .project-item.active,
.present-shell .scene-button.active,
.present-shell .workspace-tab.active {
  background: rgba(17, 24, 39, 0.06);
  border-color: var(--studio-line);
}

.present-shell .workspace-tab.active .workspace-tab-kicker,
.present-shell .scene-status,
.present-shell .topbar-actions a:hover,
.present-shell .button-ghost {
  color: var(--studio-accent);
}

.present-shell .button-primary,
.present-shell .button-secondary,
.present-shell .button-ghost,
.present-shell .panel-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  font-family: "Instrument Sans", system-ui, sans-serif;
  border-radius: 14px;
  cursor: pointer;
  transition:
    border-color 0.18s ease,
    background 0.18s ease,
    color 0.18s ease,
    transform 0.18s ease;
}

.present-shell .button-primary:hover,
.present-shell .button-secondary:hover,
.present-shell .button-ghost:hover,
.present-shell .panel-close:hover {
  transform: translateY(-1px);
}

.present-shell .button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--studio-accent), #5e80ff);
  border: 1px solid transparent;
}

.present-shell .button-secondary {
  color: var(--studio-text);
  background: var(--studio-surface);
  border: 1px solid var(--studio-line-strong);
}

.present-shell .button-ghost,
.present-shell .panel-close {
  color: var(--studio-text);
  background: transparent;
  border: 1px solid var(--studio-line);
}

.present-shell .button-danger {
  color: #b74343;
  border-color: rgba(183, 67, 67, 0.26);
}

.present-shell .button-mini {
  min-height: 40px;
}

.present-shell .upload-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.present-shell .sidebar-create-button {
  justify-self: start;
  width: 100%;
}

.present-shell .create-panel-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.present-shell .workspace-panel[hidden],
.present-shell .navigator-panel[hidden],
.present-shell #navigator-card[hidden],
.present-shell #create-panel[hidden] {
  display: none !important;
}

@media (max-width: 1180px) {
  .present-shell .present-layout {
    grid-template-columns: 256px minmax(0, 1fr);
  }

  .present-shell .upload-row,
  .present-shell .active-scene-layout,
  .present-shell .workspace-settings,
  .present-shell .workspace-voice-grid,
  .present-shell .preview-grid {
    grid-template-columns: 1fr;
  }

  .present-shell .workspace-summary {
    grid-template-columns: 1fr;
  }

  .present-shell .workspace-toolbar {
    justify-items: start;
  }

  .present-shell .workspace-actions {
    justify-content: flex-start;
  }

  .present-shell .viewer-setup-grid,
  .present-shell .create-panel-advanced-grid {
    grid-template-columns: 1fr;
  }

  .present-shell .viewer-setup-span-2 {
    grid-column: auto;
  }
}

@media (max-width: 900px) {
  .present-shell .present-layout {
    grid-template-columns: 1fr;
  }

  .present-shell .studio-sidebar {
    position: static;
    min-height: 0;
    border-right: 0;
    border-bottom: 1px solid var(--studio-line);
  }

  .present-shell .studio-main {
    padding: 22px 18px 42px;
  }

  .present-shell .present-topbar {
    padding: 12px 18px;
  }
}

@media (max-width: 640px) {
  .present-shell .present-topbar,
  .present-shell .workspace-section-head,
  .present-shell .create-panel-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .present-shell .topbar-actions,
  .present-shell .workspace-actions,
  .present-shell .upload-actions {
    width: 100%;
  }

  .present-shell .workspace-actions .button-primary,
.present-shell .workspace-actions .button-secondary,
.present-shell .workspace-actions .button-ghost,
.present-shell .upload-actions .button-primary,
.present-shell .upload-actions .button-ghost {
  width: 100%;
  }

  .present-shell .brand img {
    width: 156px;
    height: 42px;
  }
}

/* AvaSeminar landing-inspired refresh */
:root {
  --bg: #f7f3eb;
  --panel: rgba(255, 255, 255, 0.88);
  --panel-soft: #fffdf8;
  --line: rgba(16, 36, 62, 0.1);
  --line-strong: rgba(16, 36, 62, 0.18);
  --text: #10243e;
  --muted: #4f6178;
  --cyan: #2457f5;
  --cyan-strong: #1f49d1;
  --white: #fff;
  --shadow: 0 24px 60px rgba(38, 63, 102, 0.12);
}

body {
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 147, 92, 0.18), transparent 28%),
    radial-gradient(circle at top right, rgba(36, 87, 245, 0.12), transparent 32%),
    linear-gradient(180deg, #fcf8f1 0%, #f7f3eb 46%, #fffdf8 100%);
  font-family: "Instrument Sans", system-ui, sans-serif;
}

button,
input,
select,
textarea {
  font-family: "Instrument Sans", system-ui, sans-serif;
}

.present-topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  min-height: 74px;
  padding: 12px 28px;
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid rgba(16, 36, 62, 0.08);
  box-shadow: none;
  backdrop-filter: blur(10px);
}

.brand {
  width: clamp(220px, 22vw, 280px);
  gap: 12px;
  overflow: hidden;
}

.brand img {
  width: 176px;
  height: 46px;
  object-fit: cover;
  object-position: center;
}

.brand strong,
.section-copy h1,
.section-copy h2,
.workspace-summary-copy h2,
.studio-empty h2,
.viewer-head h1,
.viewer-qa-popup-head h2 {
  font-family: "Space Grotesk", "Instrument Sans", sans-serif;
  letter-spacing: -0.04em;
}

.brand strong {
  color: var(--ink);
}

.brand small,
.topbar-actions a,
.hint,
.section-copy p,
.project-meta,
.scene-source,
#workspace-meta,
#viewer-meta,
.navigator-empty {
  color: var(--ink-soft);
}

.topbar-actions a {
  font-weight: 600;
}

.present-layout {
  max-width: 1240px;
  padding-top: 22px;
  gap: 18px;
}

.card,
.create-panel,
.studio-empty,
.viewer-qa-popup-panel,
.viewer-stage,
.qa-card {
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: none;
}

.studio-rail,
.navigator-card,
.workspace-head,
.active-scene-card,
.viewer-setup-card,
.project-settings-card {
  background: var(--panel);
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--cyan), #5b87ff);
  box-shadow: 0 18px 34px rgba(36, 87, 245, 0.24);
}

.button-secondary,
.button-ghost,
.navigator-tab,
.workspace-tab,
.project-item,
.scene-button,
.panel-close,
.qa-suggestions button {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  border-radius: 14px;
}

.button-ghost {
  color: var(--cyan);
  border-color: rgba(36, 87, 245, 0.24);
}

.navigator-tab.active,
.workspace-tab.active,
.project-item.active,
.scene-button.active {
  color: #fff;
  background: linear-gradient(135deg, var(--cyan), #7d8eff);
  border-color: transparent;
}

.button-primary,
.button-secondary {
  border-radius: 14px;
}

.field input,
.field select,
.field textarea,
.qa-form textarea {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid var(--line);
}

.field input::placeholder,
.field textarea::placeholder {
  color: rgba(79, 97, 120, 0.68);
}

.studio-empty {
  background:
    linear-gradient(135deg, rgba(36, 87, 245, 0.06), transparent 36%),
    rgba(255, 255, 255, 0.8);
}

.studio-empty,
.create-panel {
  border-color: var(--line-strong);
}

.file-drop {
  border-color: rgba(36, 87, 245, 0.26);
  background: rgba(36, 87, 245, 0.04);
}

.viewer-setup-advanced,
.scene-details {
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--line);
}

.viewer-qa-popup-backdrop {
  background: rgba(247, 243, 235, 0.72);
}

.viewer-qa-popup-panel {
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(36, 87, 245, 0.08), transparent 28%),
    rgba(255, 255, 255, 0.94);
  border-color: var(--line-strong);
  box-shadow: none;
}

.viewer-qa-popup-head p,
.viewer-qa-popup-status,
.viewer-setup-status,
.scene-source,
.project-meta,
#workspace-meta,
#viewer-meta {
  color: var(--ink-soft);
}

.viewer-qa-popup-status {
  color: #fff;
  background: linear-gradient(135deg, var(--cyan), #7d8eff);
}

.viewer-qa-popup iframe {
  background: #fff;
}

.studio-main .eyebrow,
.studio-sidebar .eyebrow,
.viewer-setup-card .eyebrow,
.project-settings-card .eyebrow,
.active-scene-card .eyebrow {
  background: rgba(36, 87, 245, 0.08);
  color: var(--cyan);
  box-shadow: none;
  border-color: rgba(36, 87, 245, 0.08);
}

.workspace-summary-copy h2,
.studio-rail .section-copy h1,
.studio-empty h2,
.viewer-head h1,
.viewer-qa-popup-head h2 {
  color: var(--ink);
}

.navigator-tabs,
.workspace-tabs {
  gap: 8px;
}

.workspace-tabs {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.workspace-tab {
  min-height: 72px;
  padding: 12px 14px;
}

.navigator-tab {
  min-height: 42px;
  padding: 0 14px;
}

.studio-rail-actions .button-primary,
.studio-rail-actions .button-ghost {
  min-height: 44px;
  border-radius: 14px;
}

.workspace-actions .button-primary,
.workspace-actions .button-secondary,
.workspace-actions .button-ghost {
  min-height: 40px;
  border-radius: 14px;
  padding: 0 16px;
}

.workspace-summary-copy h2,
.studio-rail .section-copy h1 {
  font-size: clamp(1.9rem, 3vw, 2.65rem);
  line-height: 1.02;
}

.studio-empty h2 {
  font-size: clamp(1.8rem, 2.6vw, 2.3rem);
}

.section-copy.compact h2,
.viewer-head h1,
.active-scene-card .section-copy h2 {
  font-size: clamp(1.2rem, 1.8vw, 1.7rem);
}

.workspace-summary {
  gap: 14px;
}

.workspace-toolbar {
  gap: 8px;
}

.studio-sidebar {
  top: 86px;
}

.studio-sidebar,
.viewer-side {
  gap: 14px;
}

.create-panel {
  gap: 12px;
}

.compact-upload-form {
  gap: 12px;
}

.file-drop {
  gap: 6px;
  padding: 16px;
}

.file-drop strong {
  font-size: 0.98rem;
}

.file-drop small {
  color: var(--ink-soft);
}

.file-drop-name {
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 600;
  word-break: break-word;
}

.field span {
  font-size: 0.92rem;
  font-weight: 600;
}

.studio-rail,
.navigator-card {
  padding: 14px 16px;
}

.workspace-head,
.active-scene-card,
.viewer-setup-card,
.project-settings-card,
.create-panel,
.studio-empty {
  border-radius: 18px;
}

.card,
.create-panel,
.studio-empty,
.viewer-qa-popup-panel,
.viewer-stage,
.qa-card {
  border-color: rgba(16, 36, 62, 0.08);
}

.studio-sidebar {
  top: 86px;
}

.present-layout,
.viewer-layout {
  padding-bottom: 34px;
}

/* Studio V3: slim navigation shell */
.present-shell {
  --studio-v3-bg: #fbfbf7;
  --studio-v3-sidebar: #f4f4ee;
  --studio-v3-surface: #ffffff;
  --studio-v3-text: #121212;
  --studio-v3-muted: #68645d;
  --studio-v3-line: rgba(18, 18, 18, 0.1);
  --studio-v3-line-strong: rgba(18, 18, 18, 0.16);
  --studio-v3-accent: #2f5cff;
  --studio-v3-accent-soft: rgba(47, 92, 255, 0.08);
}

.present-shell {
  color: var(--studio-v3-text);
  background:
    radial-gradient(circle at top left, rgba(255, 147, 92, 0.18), transparent 28%),
    radial-gradient(circle at top right, rgba(36, 87, 245, 0.12), transparent 32%),
    linear-gradient(180deg, #fcf8f1 0%, #f7f3eb 46%, #fffdf8 100%);
}

.present-shell .present-topbar {
  min-height: 72px;
  padding: 14px 28px;
  background: rgba(247, 243, 235, 0.76);
  border-bottom: 1px solid var(--studio-v3-line);
  backdrop-filter: blur(12px);
}

.present-shell .brand {
  width: auto;
  gap: 12px;
}

.present-shell .brand img {
  width: 148px;
  height: 38px;
}

.present-shell .brand strong {
  font-size: 1rem;
  letter-spacing: -0.03em;
}

.present-shell .topbar-actions {
  gap: 18px;
}

.present-shell .topbar-actions a {
  color: var(--studio-v3-muted);
  font-size: 0.95rem;
  font-weight: 600;
}

.present-shell .topbar-actions a:hover {
  color: var(--studio-v3-text);
}

.present-shell .present-layout {
  grid-template-columns: 278px minmax(0, 1fr);
  min-height: calc(100vh - 72px);
}

.present-shell .studio-sidebar {
  position: sticky;
  top: 72px;
  gap: 22px;
  min-height: calc(100vh - 72px);
  padding: 24px 18px 28px;
  background: var(--studio-v3-sidebar);
  border-right: 1px solid var(--studio-v3-line);
}

.present-shell .studio-sidebar-section {
  gap: 10px;
}

.present-shell .studio-intro-title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}

.present-shell .studio-sidebar-intro {
  order: 1;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--studio-v3-line);
}

.present-shell .studio-function-nav {
  order: 2;
}

.present-shell #navigator-card {
  order: 3;
}

.present-shell .studio-sidebar-status {
  order: 4;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--studio-v3-line);
}

.present-shell .sidebar-label {
  margin: 0;
  color: var(--studio-v3-accent);
  font-size: 0.67rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.present-shell .studio-sidebar h1 {
  margin: 0;
  font-size: 0.98rem !important;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.present-shell .studio-sidebar h2 {
  font-size: 0.98rem;
  font-weight: 700;
}

.present-shell .studio-function-nav .sidebar-section-head {
  display: flex !important;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
}

.present-shell .studio-function-nav .sidebar-section-head h2 {
  margin: 0;
}

.present-shell .studio-function-nav .sidebar-section-head .sidebar-label {
  font-size: 0.64rem;
}

.present-shell .sidebar-copy,
.present-shell .hint,
.present-shell .navigator-empty,
.present-shell .project-meta,
.present-shell .scene-button-copy span,
.present-shell #workspace-meta,
.present-shell .scene-source,
.present-shell .create-panel-copy,
.present-shell .workspace-section-head p,
.present-shell .studio-empty p,
.present-shell .viewer-setup-status {
  color: var(--studio-v3-muted);
}

.present-shell .sidebar-copy,
.present-shell .create-panel-copy,
.present-shell .workspace-section-head p,
.present-shell .studio-empty p {
  line-height: 1.58;
}

.present-shell .sidebar-create-button {
  width: 100%;
  justify-self: stretch;
}

.present-shell .navigator-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.present-shell .workspace-tabs {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
}

.present-shell .workspace-tab,
.present-shell .project-item,
.present-shell .scene-button,
.present-shell .navigator-tab {
  border-radius: 12px;
  transition:
    background 0.18s ease,
    border-color 0.18s ease,
    color 0.18s ease,
    transform 0.18s ease;
}

.present-shell .workspace-tab {
  gap: 2px;
  min-height: 54px;
  padding: 10px 12px 10px 14px;
  background: transparent;
  border: 1px solid transparent;
  border-left: 3px solid transparent;
}

.present-shell .workspace-tab strong {
  font-size: 0.95rem;
  line-height: 1.08;
}

.present-shell .workspace-tab-kicker {
  color: var(--studio-v3-muted);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
}

.present-shell .workspace-tab.active {
  color: var(--studio-text);
  background: rgba(255, 255, 255, 0.78);
  border-color: var(--studio-v3-line);
  border-left-color: var(--studio-v3-accent);
}

.present-shell .workspace-tab.active .workspace-tab-kicker {
  color: var(--studio-v3-accent);
}

.present-shell .navigator-tab {
  min-height: 38px;
  padding: 0 12px;
  color: var(--studio-v3-muted);
  background: rgba(255, 255, 255, 0.68);
  border: 1px solid var(--studio-v3-line);
}

.present-shell .navigator-tab.active {
  color: var(--studio-v3-text);
  background: var(--studio-v3-surface);
  border-color: var(--studio-v3-line-strong);
}

.present-shell .project-list,
.present-shell .scene-list {
  gap: 6px;
  max-height: 188px;
  padding-right: 2px;
}

.present-shell .project-item-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
}

.present-shell .project-item,
.present-shell .scene-button {
  display: grid;
  gap: 3px;
  padding: 10px 12px;
  background: transparent;
  border: 1px solid transparent;
}

.present-shell .project-item {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  width: auto;
  flex: 1 1 auto;
}

.present-shell .project-item-copy {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  width: 100%;
  flex: 1 1 auto;
}

.present-shell .project-item strong,
.present-shell .scene-button strong {
  color: var(--studio-v3-text);
  font-size: 0.92rem;
  margin-bottom: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.present-shell .project-meta {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.present-shell .project-delete-button {
  width: 30px;
  height: 30px;
  padding: 0;
  display: grid;
  place-items: center;
  color: var(--studio-v3-muted);
  background: rgba(255, 255, 255, 0.64);
  border: 1px solid var(--studio-v3-line);
  border-radius: 12px;
  cursor: pointer;
  white-space: nowrap;
  font-size: 18px;
  line-height: 1;
}

.present-shell .project-delete-button:hover {
  color: #c94a4a;
  border-color: rgba(201, 74, 74, 0.28);
  background: rgba(201, 74, 74, 0.08);
}

.present-shell .project-item.active,
.present-shell .scene-button.active {
  background: rgba(255, 255, 255, 0.85);
  border-color: var(--studio-v3-line);
}

.present-shell .scene-button {
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 10px;
}

.present-shell .scene-index-badge {
  width: 28px;
  height: 28px;
  color: var(--studio-v3-muted);
  background: rgba(18, 18, 18, 0.05);
  border-radius: 9px;
}

.present-shell .studio-main {
  padding: 26px 42px 54px;
  background: transparent;
}

.present-shell .create-panel,
.present-shell .studio-empty,
.present-shell .workspace-head,
.present-shell .workspace-panel {
  margin: 0;
  padding: 0 0 30px;
  border: 0;
  border-bottom: 1px solid var(--studio-v3-line);
  border-radius: 0;
  background: transparent;
}

.present-shell .studio-empty,
.present-shell .workspace-head,
.present-shell .workspace-panel {
  margin-top: 26px;
}

.present-shell .workspace-head {
  margin-top: 0;
}

.present-shell .create-panel-head,
.present-shell .workspace-section-head {
  margin-bottom: 18px;
}

.present-shell .workspace-section-head {
  margin-top: -4px;
  margin-bottom: 14px;
}

.present-shell .workspace-summary {
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

.present-shell .workspace-summary-copy {
  max-width: 900px;
}

.present-shell .workspace-title-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.present-shell .workspace-summary-copy h2 {
  font-size: clamp(1.35rem, 2.15vw, 1.7rem);
  line-height: 1;
}

.present-shell #workspace-meta {
  margin: 0;
  white-space: nowrap;
}

.present-shell .workspace-toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 8px 12px;
  justify-items: start;
}

.present-shell .workspace-actions {
  justify-content: flex-start;
  gap: 8px;
}

.present-shell .workspace-actions-secondary {
  margin-top: 0;
  justify-content: flex-start;
}

.present-shell .button-primary,
.present-shell .button-secondary,
.present-shell .button-ghost,
.present-shell .panel-close {
  min-height: 38px;
  padding: 0 14px;
  border-radius: 12px;
  box-shadow: none;
  font-size: 0.96rem;
}

.present-shell .button-primary {
  color: #fff;
  background: var(--studio-v3-accent);
}

.present-shell .button-secondary {
  color: var(--studio-v3-text);
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid var(--studio-v3-line);
}

.present-shell .button-ghost,
.present-shell .panel-close {
  color: var(--studio-v3-muted);
  background: transparent;
  border: 1px solid var(--studio-v3-line);
}

.present-shell .upload-row {
  grid-template-columns: minmax(220px, 320px) minmax(340px, 1fr);
  gap: 22px;
}

.present-shell .file-drop {
  min-height: 188px;
  justify-items: center;
  text-align: center;
  background:
    radial-gradient(circle at top, rgba(140, 203, 255, 0.3), transparent 44%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(250, 246, 255, 0.96));
  border: 1px solid var(--studio-v3-line);
  border-radius: 20px;
}

.present-shell .file-drop-name {
  color: var(--studio-v3-text);
}

.present-shell .file-drop-icon {
  width: 56px;
  height: 56px;
  font-size: 2.15rem;
}

.present-shell .field input,
.present-shell .field select,
.present-shell .field textarea,
.present-shell .toggle-field,
.present-shell .field-readonly,
.present-shell .create-panel-advanced,
.present-shell .viewer-setup-advanced,
.present-shell .scene-details {
  border-color: var(--studio-v3-line);
}

.present-shell .field input,
.present-shell .field select,
.present-shell .field textarea {
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.86);
}

.present-shell .field textarea {
  min-height: 340px;
}

.present-shell .active-scene-layout {
  grid-template-columns: minmax(360px, 0.88fr) minmax(0, 1.12fr);
  gap: 24px;
}

.present-shell .scene-preview {
  border: 1px solid var(--studio-v3-line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
}

.present-shell .scene-editor-panel,
.present-shell .scene-preview-panel {
  gap: 12px;
}

.present-shell .scene-editor-head strong {
  font-size: 1.35rem;
}

.present-shell .scene-status {
  color: var(--studio-v3-accent);
  font-size: 0.9rem;
}

.present-shell .viewer-setup-grid,
.present-shell .create-panel-advanced-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.present-shell .workspace-settings {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.present-shell .workspace-narrative-settings {
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
}

.present-shell .viewer-setup-footer {
  align-items: flex-start;
  gap: 16px;
}

.present-shell .field-readonly {
  padding: 14px;
  background: rgba(255, 255, 255, 0.72);
}

.present-shell .field-readonly strong {
  margin-top: 8px;
  color: var(--studio-v3-text);
}

@media (max-width: 1180px) {
  .present-shell .present-layout {
    grid-template-columns: 248px minmax(0, 1fr);
  }

  .present-shell .upload-row,
  .present-shell .active-scene-layout,
  .present-shell .viewer-setup-grid,
  .present-shell .create-panel-advanced-grid,
  .present-shell .workspace-settings,
  .present-shell .workspace-narrative-settings {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .present-shell .present-layout {
    grid-template-columns: 1fr;
  }

  .present-shell .present-topbar {
    padding: 12px 18px;
  }

  .present-shell .studio-sidebar {
    position: static;
    min-height: 0;
    border-right: 0;
    border-bottom: 1px solid var(--studio-v3-line);
  }

  .present-shell .studio-main {
    padding: 22px 18px 40px;
  }
}

@media (max-width: 640px) {
  .present-shell .present-topbar,
  .present-shell .workspace-section-head,
  .present-shell .create-panel-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .present-shell .topbar-actions,
  .present-shell .workspace-actions,
  .present-shell .upload-actions {
    width: 100%;
  }

  .present-shell .workspace-actions .button-primary,
  .present-shell .workspace-actions .button-secondary,
  .present-shell .workspace-actions .button-ghost,
  .present-shell .upload-actions .button-primary,
  .present-shell .upload-actions .button-ghost {
    width: 100%;
  }

.present-shell .brand img {
  width: 156px;
  height: 40px;
}

/* Exact mock alignment: main workspace */
.present-shell .present-layout {
  grid-template-columns: 272px minmax(0, 1fr);
}

.present-shell .studio-main {
  padding: 28px 32px 34px;
  min-width: 0;
}

.present-shell .workspace-head {
  display: block;
  margin-bottom: 18px;
  padding: 0;
  border: 0 !important;
}

.present-shell .workspace-summary {
  display: block;
  gap: 0;
}

.present-shell .workspace-summary-copy {
  display: block;
  max-width: none;
}

.present-shell .workspace-summary-copy h2 {
  margin: 8px 0;
  font-size: 34px;
  line-height: 1;
  letter-spacing: -0.055em;
}

.present-shell #workspace-meta {
  margin: 0;
  padding: 0;
  height: auto;
  color: #696864;
  font-size: 16px;
  background: transparent;
  border-radius: 0;
}

.present-shell .deck-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 12px 0 16px;
  margin-bottom: 18px;
  border-top: 0;
  border-bottom: 1px solid rgba(20, 20, 30, 0.08);
}

.present-shell .deck-strip-copy {
  display: block;
}

.present-shell .deck-strip-copy b {
  display: block;
  font-size: 15px;
}

.present-shell .deck-strip-copy p {
  margin: 3px 0 0;
  color: #777;
  font-size: 13px;
}

.present-shell .deck-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.present-shell .workspace-panel.active-scene-card {
  padding: 0;
  border: 0 !important;
}

.present-shell .active-scene-layout.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 430px;
  gap: 28px;
  align-items: start;
}

.present-shell .scene-preview-panel.preview-area {
  min-width: 0;
}

.present-shell .scene-preview-head.preview-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 14px;
}

.present-shell .scene-preview-head.preview-head h2,
.present-shell .editor-head h2 {
  margin: 0;
  font-size: 24px;
  letter-spacing: -0.04em;
}

.present-shell .scene-nav-actions.preview-actions {
  display: flex;
  gap: 8px;
}

.present-shell .scene-preview.slide-preview {
  width: 100%;
  max-width: none;
  aspect-ratio: 16 / 9;
  padding: 0;
  overflow: hidden;
  border: 1px solid rgba(20, 20, 30, 0.08);
  border-radius: 24px;
  box-shadow: none;
  background: rgba(255, 255, 255, 0.72);
}

.present-shell .scene-preview.slide-preview img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}

.present-shell .scene-details.collapsed {
  margin-top: 14px;
  border: 1px solid rgba(20, 20, 30, 0.08);
  border-radius: 16px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.48);
  color: #5f6472;
  font-weight: 750;
}

.present-shell .scene-details.collapsed summary {
  list-style: none;
  cursor: pointer;
}

.present-shell .scene-details.collapsed summary::-webkit-details-marker {
  display: none;
}

.present-shell .scene-editor-panel.editor {
  max-width: 430px;
  border-left: 1px solid rgba(20, 20, 30, 0.08);
  padding-left: 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.present-shell .editor-head p {
  margin: 6px 0 0;
  color: #6d7180;
  line-height: 1.45;
}

.present-shell .section-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
}

.present-shell .section-title h3 {
  margin: 0;
  font-size: 16px;
}

.present-shell .scene-status.tag,
.present-shell .tag.scene-status {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 9px;
  border-radius: 999px;
  background: rgba(20, 20, 30, 0.06);
  color: #5e6472;
  font-size: 12px;
  font-weight: 850;
}

.present-shell .scene-editor-tools.tool-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.present-shell .scene-editor-tools.tool-row .button-primary,
.present-shell .scene-editor-tools.tool-row .button-secondary {
  height: 36px;
  min-height: 36px;
  font-size: 13px;
}

.present-shell .narration-field > span {
  display: block;
  margin-bottom: 8px;
  font-size: 16px;
  font-weight: 700;
}

.present-shell .narration-field textarea,
.present-shell #active-scene-script {
  width: 100%;
  min-height: 280px;
  max-height: none;
  resize: vertical;
  border: 1px solid rgba(20, 20, 30, 0.10);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.62);
  padding: 18px;
  color: #1b1d26;
  line-height: 1.5;
  font-size: 15px;
  outline: none;
}

.present-shell .cohost-editor {
  display: block;
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.present-shell .cohost-editor .section-title {
  margin-top: 8px;
}

.present-shell .cohost-editor-status {
  display: block;
  margin: 8px 0 0;
  color: #5e6472;
  font-size: 12px;
  font-weight: 850;
}

.present-shell .cohost-editor-hint {
  margin: 8px 0 0;
  color: #6d7180;
  line-height: 1.45;
}

.present-shell .cohost-message-list {
  display: grid;
  gap: 0;
  margin-top: 8px;
}

.present-shell .cohost-message-card {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 10px;
  padding: 10px 0;
  border-top: 1px solid rgba(20, 20, 30, 0.07);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.present-shell .cohost-message-card:first-child {
  border-top: 0;
}

.present-shell .cohost-message-card-head {
  display: contents;
}

.present-shell .cohost-emoji-field {
  width: 32px;
}

.present-shell .cohost-emoji-field span {
  display: none;
}

.present-shell .cohost-emoji-field input {
  width: 32px;
  height: 32px;
  padding: 0;
  text-align: center;
  border-radius: 50%;
  background: rgba(49, 87, 255, 0.09);
  border: 0;
}

.present-shell .cohost-message-badges {
  grid-column: 2;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.present-shell .cohost-purpose-badge,
.present-shell .cohost-timing-badge {
  height: auto;
  padding: 0;
  border-radius: 0;
  background: transparent;
  color: #888;
  font-size: 12px;
  font-weight: 700;
}

.present-shell .cohost-delete-button {
  grid-column: 2;
  justify-self: end;
  align-self: start;
}

.present-shell .cohost-message-card .field {
  grid-column: 2;
}

.present-shell .cohost-message-card .field span {
  font-size: 14px;
  font-weight: 700;
}

.present-shell .cohost-message-card textarea {
  min-height: 76px;
  padding: 12px 14px;
  border: 1px solid rgba(20, 20, 30, 0.10);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.62);
  font-size: 14px;
}

@media (max-width: 1200px) {
  .present-shell .active-scene-layout.workspace {
    grid-template-columns: 1fr;
  }

  .present-shell .scene-editor-panel.editor {
    max-width: none;
    border-left: 0;
    padding-left: 0;
    border-top: 1px solid rgba(20, 20, 30, 0.08);
    padding-top: 20px;
  }
}

/* Sidebar minimal mode */
.present-shell .studio-sidebar-intro > .sidebar-copy,
.present-shell .studio-sidebar-divider,
.present-shell .studio-intro-title,
.present-shell .studio-sidebar h1,
.present-shell .sidebar-section-head h2,
.present-shell .studio-sidebar-status {
  display: none !important;
}

.present-shell .studio-sidebar-intro {
  gap: 12px;
}

.present-shell .studio-sidebar-intro > .sidebar-label,
.present-shell #navigator-card > .sidebar-label {
  margin: 0 0 14px;
}

/* Workspace tightening */
.present-shell .workspace-head {
  padding: 0 0 10px;
  border-bottom: 0 !important;
}

.present-shell .workspace-summary {
  gap: 8px;
}

.present-shell .workspace-summary-copy {
  max-width: 680px;
}

.present-shell .workspace-summary-copy h2 {
  font-size: clamp(2rem, 2.7vw, 2.4rem);
  line-height: 1.05;
}

.present-shell #workspace-meta {
  padding: 0;
  height: auto;
  background: transparent;
  font-size: 0.92rem;
}

.present-shell .deck-strip {
  padding: 12px 0 14px;
  margin-bottom: 18px;
  border-bottom: 1px solid rgba(20, 20, 30, 0.08);
}

.present-shell .active-scene-layout {
  grid-template-columns: minmax(620px, 1fr) 420px;
  gap: 24px;
  align-items: start;
}

.present-shell .scene-preview-panel,
.present-shell .scene-editor-panel {
  gap: 8px;
}

.present-shell .scene-preview-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.present-shell .scene-preview-head h2 {
  margin: 0;
  font-size: clamp(1.15rem, 1.45vw, 1.35rem);
  line-height: 1.1;
}

.present-shell .scene-nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.present-shell .scene-editor-tools {
  gap: 8px;
}

.present-shell .scene-preview {
  width: 100%;
  aspect-ratio: 16 / 9;
  max-width: none;
  overflow: hidden;
  border-radius: 18px;
  border: 1px solid rgba(20, 20, 30, 0.08);
  box-shadow: none;
  background: rgba(255, 255, 255, 0.58);
}

.present-shell .scene-preview img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.present-shell .field textarea {
  min-height: 240px;
  max-height: 360px;
}

.present-shell .cohost-editor {
  margin-top: 8px;
  padding-top: 10px;
  gap: 8px;
}

.present-shell .cohost-editor-hint {
  max-width: 54ch;
}

.present-shell .cohost-message-list {
  gap: 6px;
}

.present-shell .cohost-message-card {
  padding: 10px;
  gap: 8px;
}

.present-shell .cohost-message-card-head {
  grid-template-columns: minmax(80px, 110px) minmax(0, 1fr) auto;
  gap: 6px;
}

.present-shell .cohost-message-card textarea {
  min-height: 64px;
}

.present-shell .scene-editor-head strong {
  font-size: 1.05rem;
}

.present-shell .scene-status {
  font-size: 0.82rem;
}

.present-shell .scene-details {
  margin-top: 8px;
  padding: 10px 12px;
}

.present-shell .scene-details summary {
  font-size: 0.95rem;
}

.present-shell .workspace-section-head {
  margin-bottom: 12px;
}

.present-shell .workspace-section-head h2 {
  font-size: clamp(2rem, 2.8vw, 2.5rem);
  line-height: 1.05;
}

.present-shell .workspace-panel,
.present-shell .workspace-head {
  border-bottom: 0 !important;
}

.present-shell .workspace-panel {
  padding-bottom: 0;
}

.present-shell .studio-main {
  padding: 24px 32px 32px;
}

.present-shell .studio-sidebar {
  width: 270px;
}

.present-shell .workspace-tabs .workspace-tab {
  min-height: 60px;
  padding: 0 12px;
}

.present-shell .scene-button-compact {
  min-height: 52px;
  padding: 8px 10px;
}

.present-shell .scene-list,
.present-shell .project-list {
  gap: 6px;
}

.present-shell .studio-sidebar-status {
  display: none;
}

.present-shell .studio-sidebar h1,
.present-shell .studio-intro-title,
.present-shell .studio-sidebar-divider,
.present-shell .sidebar-section-head h2,
.present-shell .sidebar-copy {
  display: none !important;
}
}

/* Studio mock alignment overrides */
.present-shell .sidebar-create-button {
  width: 100%;
  min-height: 42px;
  color: var(--studio-v4-text);
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--studio-v4-line);
  box-shadow: none;
}

.present-shell .sidebar-create-button:hover {
  background: rgba(255, 255, 255, 0.92);
}

.present-shell #navigator-card {
  padding-top: 2px;
}

.present-shell .navigator-tabs,
.present-shell .project-list {
  display: none !important;
}

.present-shell .scene-list {
  max-height: none;
}

.present-shell .studio-main {
  padding-top: 24px;
}

.present-shell .workspace-head {
  padding-bottom: 24px;
}

.present-shell .workspace-summary-copy h2 {
  font-size: clamp(1.9rem, 2.4vw, 2.7rem);
  line-height: 0.98;
}

.present-shell #workspace-meta {
  height: 26px;
  padding: 0 12px;
  font-size: 0.92rem;
}

.present-shell .deck-strip {
  align-items: center;
  padding: 16px 0 18px;
}

.present-shell .deck-strip-copy b {
  font-size: 1.02rem;
}

.present-shell .deck-strip-copy p {
  max-width: 56ch;
}

.present-shell .active-scene-layout {
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 24px;
}

.present-shell .scene-editor-head strong {
  font-size: 1.2rem;
}

.present-shell .scene-editor-tools {
  gap: 8px;
}

.present-shell .scene-editor-tools .button-primary,
.present-shell .scene-editor-tools .button-secondary {
  min-height: 36px;
}

/* Final Studio layout alignment for the mock */
.present-shell {
  --blue: #3157ff;
  --purple: #705cff;
  --ink: #111217;
  --muted: #6e6b74;
  --line: rgba(20, 20, 30, 0.1);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 9% 12%, rgba(255, 226, 204, 0.58), transparent 28%),
    radial-gradient(circle at 82% 12%, rgba(216, 224, 255, 0.72), transparent 32%),
    linear-gradient(120deg, #fbf7f1, #f7f6fb 62%, #f3f6ff);
}

.present-shell .present-topbar {
  height: 68px;
  min-height: 68px;
  padding: 0 34px;
  background: rgba(255, 255, 255, 0.64);
  border-bottom: 1px solid rgba(20, 20, 30, 0.07);
  backdrop-filter: blur(18px);
}

.present-shell .brand {
  gap: 10px;
  font-weight: 850;
  letter-spacing: -0.02em;
}

.present-shell .brand img {
  width: 138px;
  height: 34px;
  object-fit: contain;
}

.present-shell .topbar-actions {
  gap: 26px;
  color: #5f5b55;
}

.present-shell .topbar-actions a {
  font-weight: 750;
}

.present-shell .present-layout {
  grid-template-columns: 272px minmax(0, 1fr);
  min-height: calc(100vh - 68px);
}

.present-shell .studio-sidebar {
  top: 68px;
  min-height: calc(100vh - 68px);
  padding: 24px 18px;
  background: rgba(255, 255, 255, 0.3);
  border-right: 1px solid rgba(20, 20, 30, 0.08);
}

.present-shell .sidebar-label {
  color: var(--blue);
  font-size: 11px;
  font-weight: 950;
  letter-spacing: 0.24em;
}

.present-shell .studio-sidebar h1 {
  font-size: clamp(2rem, 2.8vw, 2.55rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.present-shell .workspace-summary-copy h2 {
  font-size: clamp(1.5rem, 2.15vw, 2.05rem);
  line-height: 1.04;
  margin: 0;
  letter-spacing: -0.055em;
}

.present-shell .studio-main {
  padding: 38px 32px 34px;
  background: rgba(255, 255, 255, 0.2);
}

.present-shell .workspace-head {
  padding-top: 4px;
  padding-bottom: 16px;
  margin-bottom: 18px;
  border-bottom: 1px solid rgba(20, 20, 30, 0.08);
}

.present-shell .workspace-summary {
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: end;
}

.present-shell .workspace-summary-copy {
  gap: 6px;
}

.present-shell #workspace-meta {
  color: #73727b;
}

.present-shell .deck-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 10px 0 16px;
  margin-bottom: 18px;
  border-bottom: 1px solid rgba(20, 20, 30, 0.08);
}

.present-shell .deck-strip-copy {
  display: grid;
  gap: 3px;
}

.present-shell .deck-strip-copy b {
  font-size: 15px;
  letter-spacing: -0.02em;
}

.present-shell .deck-strip-copy p {
  margin: 0;
  color: #777;
  font-size: 13px;
}

.present-shell .deck-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.present-shell .workspace-section-head {
  margin-bottom: 18px;
}

.present-shell .active-scene-layout {
  grid-template-columns: minmax(0, 1fr) 430px;
  gap: 28px;
  align-items: start;
}

.present-shell .scene-preview {
  border: 1px solid rgba(20, 20, 30, 0.08);
  border-radius: 24px;
  background:
    radial-gradient(circle at 76% 45%, rgba(115, 99, 255, 0.12), transparent 23%),
    radial-gradient(circle at 88% 62%, rgba(74, 201, 255, 0.1), transparent 18%),
    linear-gradient(135deg, #fff, #eef2ff);
  box-shadow: 0 24px 70px rgba(47, 39, 26, 0.055);
}

.present-shell .scene-preview img {
  display: block;
  width: 100%;
  height: auto;
}

.present-shell .scene-editor-panel {
  gap: 12px;
  padding-left: 6px;
}

.present-shell .scene-editor-tools {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.present-shell .scene-editor-tools .button-primary,
.present-shell .scene-editor-tools .button-secondary {
  height: 36px;
  border-radius: 999px;
}

.present-shell .field textarea {
  min-height: 280px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.72);
  border-radius: 18px;
}

.present-shell .cohost-editor {
  margin-top: 8px;
  padding-top: 14px;
  border-top: 1px solid rgba(20, 20, 30, 0.08);
}

.present-shell .cohost-message-card {
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.72);
}

.present-shell .cohost-message-card textarea {
  min-height: 94px;
}

.present-shell .preview-more-actions {
  margin-top: 4px;
}

.present-shell .workspace-more-actions-panel {
  min-width: 240px;
}

.present-shell .project-list,
.present-shell .scene-list {
  gap: 8px;
}

.present-shell .project-item,
.present-shell .scene-button,
.present-shell .navigator-tab,
.present-shell .workspace-tab {
  border: 1px solid rgba(20, 20, 30, 0.12);
  background: rgba(255, 255, 255, 0.72);
}

.present-shell .workspace-tab {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 10px;
  align-items: center;
  padding: 11px 12px;
  border-radius: 16px;
}

.present-shell .workspace-tab-kicker {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: grid;
  place-items: center;
}

.present-shell .workspace-tab strong {
  font-size: 14px;
  letter-spacing: -0.02em;
}

.present-shell .workspace-tab.active {
  border-color: rgba(49, 87, 255, 0.16);
}

.present-shell .navigator-tabs {
  gap: 8px;
}

.present-shell .navigator-tab {
  height: 36px;
  border-radius: 999px;
}

.present-shell .project-item-row {
  gap: 8px;
}

.present-shell .project-item,
.present-shell .scene-button {
  justify-content: flex-start;
  height: auto;
  min-height: 42px;
  padding: 10px 12px;
  border-radius: 14px;
}

.present-shell .project-item.active,
.present-shell .scene-button.active,
.present-shell .navigator-tab.active {
  background: rgba(255, 255, 255, 0.82);
  border-color: rgba(49, 87, 255, 0.16);
}

.present-shell .scene-index-badge {
  border-radius: 999px;
  background: rgba(49, 87, 255, 0.1);
}

.present-shell .viewer-setup-card,
.present-shell .project-settings-card,
.present-shell .avatar-settings-card,
.present-shell .preview-card,
.present-shell .create-panel {
  background: transparent;
  border: 0;
}

.present-shell .viewer-setup-grid,
.present-shell .create-panel-advanced-grid,
.present-shell .workspace-settings,
.present-shell .workspace-narrative-settings,
.present-shell .workspace-voice-grid {
  gap: 14px;
}

.present-shell .field input,
.present-shell .field select,
.present-shell .field textarea {
  padding: 13px 14px;
  border: 1px solid rgba(20, 20, 30, 0.12);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.72);
}

.present-shell .viewer-setup-advanced,
.present-shell .create-panel-advanced,
.present-shell .scene-details {
  border: 1px solid rgba(20, 20, 30, 0.1);
  background: rgba(255, 255, 255, 0.58);
}

.present-shell .toggle-field,
.present-shell .field-readonly,
.present-shell .voice-summary-card,
.present-shell .preview-launch-card {
  border: 1px solid rgba(20, 20, 30, 0.1);
  background: rgba(255, 255, 255, 0.72);
}

.present-shell .preview-grid {
  gap: 14px;
}

.present-shell .preview-launch-card {
  border-radius: 24px;
  box-shadow: 0 12px 30px rgba(82, 68, 38, 0.08);
}

.present-shell .workspace-panel[hidden],
.present-shell .navigator-panel[hidden],
.present-shell #navigator-card[hidden],
.present-shell #create-panel[hidden] {
  display: none !important;
}

@media (max-width: 1180px) {
  .present-shell .present-layout,
  .present-shell .active-scene-layout,
  .present-shell .viewer-setup-grid,
  .present-shell .create-panel-advanced-grid,
  .present-shell .workspace-settings,
  .present-shell .workspace-narrative-settings,
  .present-shell .workspace-voice-grid,
  .present-shell .preview-grid {
    grid-template-columns: 1fr;
  }

  .present-shell .studio-sidebar {
    position: static;
    min-height: auto;
  }

  .present-shell .workspace-toolbar {
    justify-items: start;
  }
}

@media (max-width: 900px) {
  .present-shell .present-layout {
    grid-template-columns: 1fr;
  }

  .present-shell .studio-sidebar {
    border-right: 0;
    border-bottom: 1px solid rgba(20, 20, 30, 0.08);
  }

  .present-shell .studio-main {
    padding: 22px 20px 28px;
  }

  .present-shell .present-topbar {
    padding: 0 20px;
  }

  .present-shell .workspace-summary {
    grid-template-columns: 1fr;
    align-items: start;
  }
}

@media (max-width: 640px) {
  .present-shell .present-topbar {
    height: auto;
    min-height: 68px;
    padding: 14px 16px;
    align-items: flex-start;
  }

  .present-shell .topbar-actions,
  .present-shell .workspace-actions {
    gap: 8px;
  }

  .present-shell .workspace-actions .button-primary,
  .present-shell .workspace-actions .button-secondary,
  .present-shell .workspace-actions .button-ghost {
    width: 100%;
    justify-content: center;
  }

  .present-shell .upload-row {
    grid-template-columns: 1fr;
  }

  .present-shell .brand img {
    width: 156px;
    height: 40px;
  }
}
/* EOF deck spacing override */
.present-shell .studio-main {
  padding-top: 20px !important;
}

.present-shell .workspace-head {
  margin: 0 !important;
  padding: 0 !important;
  border-bottom: 0 !important;
}

.present-shell .workspace-summary {
  gap: 0 !important;
  align-items: start !important;
}

.present-shell .workspace-summary-copy {
  gap: 0 !important;
}

.present-shell .workspace-summary-copy .sidebar-label {
  margin-bottom: 0 !important;
}

.present-shell .workspace-summary-copy h2 {
  margin: 0 !important;
}

.present-shell #workspace-meta {
  margin: 0 !important;
  padding: 0 !important;
}

.present-shell .deck-strip {
  margin-top: -62px !important;
  padding-top: 0 !important;
  padding-bottom: 4px !important;
}

.present-shell .deck-strip-copy p {
  margin-top: 0 !important;
}

/* True end-of-file deck spacing override */
.present-shell .studio-main {
  padding-top: 20px !important;
}

.present-shell .workspace-head {
  margin: 0 !important;
  padding: 0 !important;
  border-bottom: 0 !important;
}

.present-shell .workspace-summary {
  gap: 0 !important;
  align-items: start !important;
}

.present-shell .workspace-summary-copy {
  gap: 0 !important;
}

.present-shell .workspace-summary-copy .sidebar-label {
  margin-bottom: 0 !important;
}

.present-shell .workspace-summary-copy h2 {
  margin: 0 !important;
}

.present-shell #workspace-meta {
  margin: 0 !important;
  padding: 0 !important;
}

.present-shell .deck-strip {
  margin-top: -62px !important;
  padding-top: 0 !important;
  padding-bottom: 4px !important;
}

.present-shell .deck-strip-copy p {
  margin-top: 0 !important;
}

/* Hard final deck spacing override */
.present-shell .studio-main {
  padding-top: 20px !important;
}

.present-shell .workspace-head {
  margin: 0 !important;
  padding: 0 !important;
  border-bottom: 0 !important;
}

.present-shell .workspace-summary {
  gap: 0 !important;
  align-items: start !important;
}

.present-shell .workspace-summary-copy {
  gap: 0 !important;
}

.present-shell .workspace-summary-copy .sidebar-label {
  margin-bottom: 0 !important;
}

.present-shell .workspace-summary-copy h2 {
  margin: 0 !important;
}

.present-shell #workspace-meta {
  margin: 0 !important;
  padding: 0 !important;
}

.present-shell .deck-strip {
  margin-top: -62px !important;
  padding-top: 0 !important;
  padding-bottom: 4px !important;
}

.present-shell .deck-strip-copy p {
  margin-top: 0 !important;
}

/* Final deck block snap-up */
.present-shell .workspace-head {
  margin: 0 !important;
  padding: 0 !important;
  border-bottom: 0 !important;
}

.present-shell .workspace-summary {
  align-items: start !important;
}

.present-shell .workspace-summary-copy {
  gap: 0 !important;
}

.present-shell .workspace-summary-copy h2 {
  margin: 0 !important;
}

.present-shell #workspace-meta {
  margin: 0 !important;
}

.present-shell .deck-strip {
  margin-top: -50px !important;
  padding: 0 0 6px !important;
}

.present-shell .deck-strip-copy p {
  margin-top: 0 !important;
}

/* Final deck block lift */
.present-shell .workspace-head {
  margin: 0 !important;
  padding: 0 0 2px !important;
  border-bottom: 0 !important;
}

.present-shell .workspace-summary-copy {
  gap: 0 !important;
}

.present-shell .workspace-summary-copy h2 {
  margin: 0 !important;
}

.present-shell #workspace-meta {
  margin: 0 !important;
}

.present-shell .deck-strip {
  margin-top: -18px !important;
  margin-bottom: 6px !important;
  padding: 0 0 8px !important;
}

.present-shell .deck-strip-copy p {
  margin-top: 0 !important;
}

/* Final aggressive lift */
.present-shell .workspace-head {
  margin-bottom: -18px !important;
}

.present-shell .deck-strip {
  margin-top: -30px !important;
}

/* Final deck strip lift */
.present-shell .workspace-head {
  padding-bottom: 0 !important;
  margin-bottom: 0 !important;
}

.present-shell .workspace-summary {
  gap: 0 !important;
  align-items: start !important;
}

.present-shell .workspace-summary-copy {
  gap: 0 !important;
}

.present-shell .deck-strip {
  margin-top: -10px !important;
  padding-top: 0 !important;
}

.present-shell .deck-strip-copy p {
  margin-top: 1px !important;
}

/* Final presentation stack lock */
.present-shell .workspace-head {
  padding: 0 0 6px !important;
  margin: 0 !important;
  border-bottom: 0 !important;
}

.present-shell .workspace-summary-copy {
  display: flex !important;
  flex-direction: column !important;
  gap: 0 !important;
  max-width: none !important;
}

.present-shell .workspace-summary-copy .sidebar-label {
  margin: 0 0 2px !important;
  line-height: 1 !important;
}

.present-shell .workspace-summary-copy h2 {
  font-size: clamp(30px, 2.45vw, 37px) !important;
  line-height: 0.98 !important;
  letter-spacing: -0.06em !important;
  margin: 0 !important;
}

.present-shell #workspace-meta {
  display: block !important;
  margin: 0 !important;
  padding: 0 !important;
  height: auto !important;
  background: transparent !important;
  border-radius: 0 !important;
  font-size: 13px !important;
  line-height: 1.08 !important;
  letter-spacing: -0.02em !important;
}

.present-shell .deck-strip {
  padding: 2px 0 10px !important;
  margin: 0 0 10px !important;
  border-top: 0 !important;
}

/* Final presentation header lock */
.present-shell .workspace-summary-copy {
  display: flex !important;
  flex-direction: column !important;
  gap: 2px !important;
}

.present-shell .workspace-summary-copy .sidebar-label {
  margin: 0 0 2px !important;
  line-height: 1 !important;
}

.present-shell .workspace-summary-copy h2 {
  font-size: clamp(30px, 2.55vw, 38px) !important;
  line-height: 0.98 !important;
  letter-spacing: -0.06em !important;
  margin: 0 0 2px !important;
}

.present-shell #workspace-meta {
  margin: 0 !important;
  padding: 0 !important;
  font-size: 13px !important;
  line-height: 1.1 !important;
  letter-spacing: -0.02em !important;
}

/* Final Studio spacing lock */
.present-shell .studio-main {
  padding: 24px 32px 32px !important;
}

.present-shell .workspace-head {
  margin-bottom: 10px !important;
  padding-top: 0 !important;
  padding-bottom: 10px !important;
}

.present-shell .workspace-summary-copy h2 {
  margin: 6px 0 6px !important;
}

.present-shell .deck-strip {
  padding: 8px 0 10px !important;
  margin-bottom: 10px !important;
}

.present-shell .workspace-panel.active-scene-card {
  margin-top: 0 !important;
  padding-top: 0 !important;
}

.present-shell .active-scene-layout.workspace {
  gap: 20px !important;
}

.present-shell .scene-preview-panel.preview-area,
.present-shell .scene-editor-panel.editor {
  padding-top: 0 !important;
}

.present-shell .scene-preview-head.preview-head {
  margin-bottom: 8px !important;
}

.present-shell .editor-head {
  margin-top: 0 !important;
  padding-top: 0 !important;
}

.present-shell .editor-head p,
.present-shell #active-scene-meta {
  margin-top: 2px !important;
}

/* Header stack tighten */
.present-shell .workspace-summary-copy {
  display: flex !important;
  flex-direction: column !important;
  gap: 2px !important;
}

.present-shell .workspace-summary-copy .sidebar-label {
  margin: 0 0 2px !important;
  line-height: 1 !important;
}

.present-shell .workspace-summary-copy h2 {
  font-size: clamp(30px, 2.55vw, 38px) !important;
  line-height: 0.98 !important;
  letter-spacing: -0.06em !important;
  margin: 0 0 2px !important;
}

.present-shell #workspace-meta {
  margin: 0 !important;
  padding: 0 !important;
  font-size: 13px !important;
  line-height: 1.1 !important;
  letter-spacing: -0.02em !important;
}

/* Final spacing trim */
.present-shell .workspace-head {
  margin-bottom: 10px !important;
}

.present-shell .deck-strip {
  padding: 8px 0 10px !important;
  margin-bottom: 10px !important;
}

.present-shell .workspace-panel.active-scene-card {
  margin-top: 0 !important;
  padding-top: 0 !important;
}

.present-shell .active-scene-layout.workspace {
  gap: 20px !important;
}

.present-shell .scene-preview-head.preview-head {
  margin-bottom: 8px !important;
}

.present-shell .scene-editor-panel.editor,
.present-shell .scene-preview-panel.preview-area {
  padding-top: 0 !important;
}

.present-shell .editor-head {
  margin-top: 0 !important;
}

.present-shell .editor-head p,
.present-shell #active-scene-meta {
  margin-top: 4px !important;
}

/* Final lock: uploaded mock exact alignment */
.present-shell .present-layout {
  grid-template-columns: 272px minmax(0, 1fr);
}

.present-shell .studio-main {
  padding: 28px 32px 34px;
  min-width: 0;
}

.present-shell .workspace-head {
  display: block;
  margin-bottom: 18px;
  padding: 0;
  border: 0 !important;
}

.present-shell .workspace-summary {
  display: block;
}

.present-shell .workspace-summary-copy {
  display: block;
  max-width: none;
}

.present-shell .workspace-summary-copy h2 {
  font-size: 34px !important;
  line-height: 1 !important;
  letter-spacing: -0.055em !important;
  margin: 8px 0 8px !important;
}

.present-shell #workspace-meta {
  display: block;
  margin: 0;
  padding: 0;
  height: auto;
  color: #696864;
  font-size: 16px;
  background: transparent !important;
  border-radius: 0;
}

.present-shell .deck-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 12px 0 16px;
  margin-bottom: 18px;
  border-top: 0;
  border-bottom: 1px solid rgba(20, 20, 30, 0.08);
}

.present-shell .deck-strip-copy b {
  font-size: 15px;
}

.present-shell .deck-strip-copy p {
  margin: 3px 0 0;
  color: #777;
  font-size: 13px;
}

.present-shell .workspace-panel.active-scene-card {
  padding: 0;
  border: 0 !important;
}

.present-shell .active-scene-layout.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 430px;
  gap: 28px;
  align-items: start;
}

.present-shell .scene-preview-panel.preview-area {
  min-width: 0;
}

.present-shell .scene-preview-head.preview-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 14px;
}

.present-shell .scene-preview-head.preview-head h2,
.present-shell .editor-head h2 {
  margin: 0;
  font-size: 24px;
  letter-spacing: -0.04em;
}

.present-shell .scene-nav-actions.preview-actions {
  display: flex;
  gap: 8px;
}

.present-shell .scene-preview.slide-preview {
  width: 100%;
  aspect-ratio: 16 / 9;
  max-width: none;
  padding: 0;
  overflow: hidden;
  border-radius: 24px;
  border: 1px solid rgba(20, 20, 30, 0.08);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: none;
}

.present-shell .scene-preview.slide-preview img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.present-shell .scene-details.collapsed {
  margin-top: 14px;
  border: 1px solid rgba(20, 20, 30, 0.08);
  border-radius: 16px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.48);
  color: #5f6472;
  font-weight: 750;
}

.present-shell .scene-editor-panel.editor {
  max-width: 430px;
  border-left: 1px solid rgba(20, 20, 30, 0.08);
  padding-left: 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.present-shell .editor-head p {
  margin: 6px 0 0;
  color: #6d7180;
  line-height: 1.45;
}

.present-shell .section-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
}

.present-shell .section-title h3 {
  font-size: 16px;
  margin: 0;
}

.present-shell .tag.scene-status {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 9px;
  border-radius: 999px;
  background: rgba(20, 20, 30, 0.06);
  color: #5e6472;
  font-size: 12px;
  font-weight: 850;
}

.present-shell .scene-editor-tools.tool-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.present-shell .scene-editor-tools.tool-row .button-primary,
.present-shell .scene-editor-tools.tool-row .button-secondary {
  height: 36px;
  min-height: 36px;
  font-size: 13px;
}

.present-shell .narration-field textarea,
.present-shell #active-scene-script {
  width: 100%;
  min-height: 280px;
  resize: vertical;
  border: 1px solid rgba(20, 20, 30, 0.10);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.62);
  padding: 18px;
  color: #1b1d26;
  line-height: 1.5;
  font-size: 15px;
  outline: none;
}

.present-shell .cohost-editor {
  display: block;
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.present-shell .cohost-editor-status {
  display: block;
  margin: 8px 0 0;
  color: #5e6472;
  font-size: 12px;
  font-weight: 850;
}

.present-shell .cohost-editor-hint {
  margin: 8px 0 0;
  color: #6d7180;
  line-height: 1.45;
}

.present-shell .cohost-message-list {
  display: grid;
  gap: 0;
  margin-top: 8px;
}

.present-shell .cohost-message-card {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 10px;
  padding: 10px 0;
  border-top: 1px solid rgba(20, 20, 30, 0.07);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.present-shell .cohost-message-card:first-child {
  border-top: 0;
}

.present-shell .cohost-message-card-head {
  display: contents;
}

.present-shell .cohost-emoji-field {
  width: 32px;
}

.present-shell .cohost-emoji-field span {
  display: none;
}

.present-shell .cohost-emoji-field input {
  width: 32px;
  height: 32px;
  padding: 0;
  text-align: center;
  border-radius: 50%;
  background: rgba(49, 87, 255, 0.09);
  border: 0;
}

.present-shell .cohost-message-badges,
.present-shell .cohost-delete-button,
.present-shell .cohost-message-card .field {
  grid-column: 2;
}

.present-shell .cohost-message-badges {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.present-shell .cohost-purpose-badge,
.present-shell .cohost-timing-badge {
  height: auto;
  padding: 0;
  border-radius: 0;
  background: transparent;
  color: #888;
  font-size: 12px;
  font-weight: 700;
}

.present-shell .cohost-message-card textarea {
  min-height: 76px;
  padding: 12px 14px;
  border: 1px solid rgba(20, 20, 30, 0.10);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.62);
  font-size: 14px;
}

@media (max-width: 1200px) {
  .present-shell .active-scene-layout.workspace {
    grid-template-columns: 1fr;
  }

  .present-shell .scene-editor-panel.editor {
    max-width: none;
    border-left: 0;
    padding-left: 0;
    border-top: 1px solid rgba(20, 20, 30, 0.08);
    padding-top: 20px;
  }
}

/* Final Studio override: closer to the supplied mock layout */
.present-shell {
  --blue: #3157ff;
  --purple: #705cff;
  --ink: #111217;
  --muted: #6e6b74;
  --line: rgba(20, 20, 30, 0.1);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 9% 12%, rgba(255, 226, 204, 0.58), transparent 28%),
    radial-gradient(circle at 82% 12%, rgba(216, 224, 255, 0.72), transparent 32%),
    linear-gradient(120deg, #fbf7f1, #f7f6fb 62%, #f3f6ff);
}

.present-shell .present-topbar {
  height: 68px;
  min-height: 68px;
  padding: 0 34px;
  background: rgba(255, 255, 255, 0.64);
  border-bottom: 1px solid rgba(20, 20, 30, 0.07);
  backdrop-filter: blur(18px);
}

.present-shell .brand {
  gap: 10px;
  font-weight: 850;
  letter-spacing: -0.02em;
}

.present-shell .brand img {
  width: 138px;
  height: 34px;
  object-fit: contain;
}

.present-shell .topbar-actions {
  gap: 26px;
  color: #5f5b55;
}

.present-shell .topbar-actions a {
  font-weight: 750;
}

.present-shell .present-layout {
  grid-template-columns: 272px minmax(0, 1fr);
  min-height: calc(100vh - 68px);
}

.present-shell .studio-sidebar {
  top: 68px;
  min-height: calc(100vh - 68px);
  padding: 24px 18px;
  background: rgba(255, 255, 255, 0.3);
  border-right: 1px solid rgba(20, 20, 30, 0.08);
}

.present-shell .studio-sidebar h1,
.present-shell .workspace-summary-copy h2,
.present-shell .studio-empty h2,
.present-shell .studio-main h2 {
  letter-spacing: -0.055em;
}

.present-shell .sidebar-label {
  color: var(--blue);
  font-size: 11px;
  font-weight: 950;
  letter-spacing: 0.24em;
}

.present-shell .studio-sidebar h1 {
  font-size: clamp(2rem, 2.8vw, 2.55rem);
  line-height: 0.98;
}

.present-shell .sidebar-copy,
.present-shell .create-panel-copy,
.present-shell .studio-empty p,
.present-shell .workspace-section-head p {
  color: #6a665f;
  line-height: 1.45;
}

.present-shell .studio-main {
  padding: 38px 32px 34px;
  background: rgba(255, 255, 255, 0.2);
}

.present-shell .workspace-head {
  padding-top: 4px;
  padding-bottom: 16px;
  margin-bottom: 18px;
  border-bottom: 1px solid rgba(20, 20, 30, 0.08);
}

.present-shell .workspace-summary {
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: end;
}

.present-shell .workspace-summary-copy {
  gap: 6px;
}

.present-shell .workspace-title-row {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}

.present-shell .workspace-summary-copy h2 {
  font-size: clamp(1.5rem, 2.15vw, 2.05rem);
  line-height: 1.04;
  margin: 0;
}

.present-shell #workspace-meta {
  color: #73727b;
}

.present-shell .workspace-toolbar {
  justify-items: end;
  gap: 10px;
}

.present-shell .workspace-actions {
  gap: 10px;
}

.present-shell .workspace-actions-primary .button-primary {
  min-width: 164px;
}

.present-shell .workspace-more-actions-panel {
  min-width: 220px;
  padding: 12px;
  border: 1px solid rgba(20, 20, 30, 0.08);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 18px 44px rgba(20, 20, 30, 0.08);
}

.present-shell .workspace-more-actions-panel a,
.present-shell .workspace-more-actions-panel button {
  justify-content: flex-start;
  width: 100%;
  border-radius: 14px;
}

.present-shell .active-scene-layout {
  grid-template-columns: minmax(0, 1fr) 430px;
  gap: 28px;
  align-items: start;
}

.present-shell .scene-preview {
  border: 1px solid rgba(20, 20, 30, 0.08);
  border-radius: 24px;
  background:
    radial-gradient(circle at 76% 45%, rgba(115, 99, 255, 0.12), transparent 23%),
    radial-gradient(circle at 88% 62%, rgba(74, 201, 255, 0.1), transparent 18%),
    linear-gradient(135deg, #fff, #eef2ff);
  box-shadow: 0 24px 70px rgba(47, 39, 26, 0.055);
}

.present-shell .scene-preview img {
  display: block;
  width: 100%;
  height: auto;
}

.present-shell .scene-editor-panel {
  gap: 12px;
  padding-left: 6px;
}

.present-shell .field textarea {
  min-height: 280px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.72);
  border-radius: 18px;
}

.present-shell .cohost-editor {
  margin-top: 8px;
  padding-top: 14px;
  border-top: 1px solid rgba(20, 20, 30, 0.08);
}

.present-shell .cohost-message-card {
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.72);
}

.present-shell .cohost-message-card textarea {
  min-height: 94px;
}

.present-shell .project-list,
.present-shell .scene-list {
  gap: 8px;
}

.present-shell .project-item,
.present-shell .scene-button,
.present-shell .navigator-tab,
.present-shell .workspace-tab {
  border: 1px solid rgba(20, 20, 30, 0.12);
  background: rgba(255, 255, 255, 0.72);
}

.present-shell .workspace-tab {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 10px;
  align-items: center;
  padding: 11px 12px;
  border-radius: 16px;
}

.present-shell .workspace-tab-kicker {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: grid;
  place-items: center;
}

.present-shell .workspace-tab strong {
  font-size: 14px;
  letter-spacing: -0.02em;
}

.present-shell .workspace-tab.active {
  border-color: rgba(49, 87, 255, 0.16);
}

.present-shell .navigator-tabs {
  gap: 8px;
}

.present-shell .navigator-tab {
  height: 36px;
  border-radius: 999px;
}

.present-shell .project-item-row {
  gap: 8px;
}

.present-shell .project-item,
.present-shell .scene-button {
  justify-content: flex-start;
  height: auto;
  min-height: 42px;
  padding: 10px 12px;
  border-radius: 14px;
}

.present-shell .project-item.active,
.present-shell .scene-button.active,
.present-shell .navigator-tab.active {
  background: rgba(255, 255, 255, 0.82);
  border-color: rgba(49, 87, 255, 0.16);
}

.present-shell .scene-index-badge {
  border-radius: 999px;
  background: rgba(49, 87, 255, 0.1);
}

.present-shell .upload-row {
  grid-template-columns: minmax(240px, 338px) minmax(300px, 1fr);
  gap: 18px;
}

.present-shell .file-drop {
  min-height: 208px;
  padding: 24px;
  background:
    radial-gradient(circle at top, rgba(135, 213, 255, 0.28), transparent 46%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(253, 244, 255, 0.92));
  border: 1px solid rgba(20, 20, 30, 0.12);
  border-radius: 22px;
}

.present-shell .file-drop-icon {
  width: 58px;
  height: 58px;
  border-width: 2px;
  border-color: rgba(23, 23, 23, 0.85);
  font-size: 2.3rem;
}

.present-shell .viewer-setup-card,
.present-shell .project-settings-card,
.present-shell .avatar-settings-card,
.present-shell .preview-card,
.present-shell .create-panel {
  background: transparent;
  border: 0;
}

.present-shell .viewer-setup-grid,
.present-shell .create-panel-advanced-grid,
.present-shell .workspace-settings,
.present-shell .workspace-narrative-settings,
.present-shell .workspace-voice-grid {
  gap: 14px;
}

.present-shell .field input,
.present-shell .field select,
.present-shell .field textarea {
  padding: 13px 14px;
  border: 1px solid rgba(20, 20, 30, 0.12);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.72);
}

.present-shell .viewer-setup-advanced,
.present-shell .create-panel-advanced,
.present-shell .scene-details {
  border: 1px solid rgba(20, 20, 30, 0.1);
  background: rgba(255, 255, 255, 0.58);
}

.present-shell .toggle-field,
.present-shell .field-readonly,
.present-shell .voice-summary-card,
.present-shell .preview-launch-card {
  border: 1px solid rgba(20, 20, 30, 0.1);
  background: rgba(255, 255, 255, 0.72);
}

.present-shell .preview-grid {
  gap: 14px;
}

.present-shell .preview-launch-card {
  border-radius: 24px;
  box-shadow: 0 12px 30px rgba(82, 68, 38, 0.08);
}

.present-shell .workspace-panel[hidden],
.present-shell .navigator-panel[hidden],
.present-shell #navigator-card[hidden],
.present-shell #create-panel[hidden] {
  display: none !important;
}

@media (max-width: 1180px) {
  .present-shell .present-layout,
  .present-shell .active-scene-layout,
  .present-shell .viewer-setup-grid,
  .present-shell .create-panel-advanced-grid,
  .present-shell .workspace-settings,
  .present-shell .workspace-narrative-settings,
  .present-shell .workspace-voice-grid,
  .present-shell .preview-grid {
    grid-template-columns: 1fr;
  }

  .present-shell .studio-sidebar {
    position: static;
    min-height: auto;
  }

  .present-shell .workspace-toolbar {
    justify-items: start;
  }
}

@media (max-width: 900px) {
  .present-shell .present-layout {
    grid-template-columns: 1fr;
  }

  .present-shell .studio-sidebar {
    border-right: 0;
    border-bottom: 1px solid rgba(20, 20, 30, 0.08);
  }

  .present-shell .studio-main {
    padding: 22px 20px 28px;
  }

  .present-shell .present-topbar {
    padding: 0 20px;
  }

  .present-shell .workspace-summary {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .present-shell .workspace-toolbar {
    justify-items: start;
  }
}

@media (max-width: 640px) {
  .present-shell .present-topbar {
    height: auto;
    min-height: 68px;
    padding: 14px 16px;
    align-items: flex-start;
  }

  .present-shell .topbar-actions,
  .present-shell .workspace-actions {
    gap: 8px;
  }

  .present-shell .workspace-actions .button-primary,
  .present-shell .workspace-actions .button-secondary,
  .present-shell .workspace-actions .button-ghost {
    width: 100%;
    justify-content: center;
  }

  .present-shell .upload-row {
    grid-template-columns: 1fr;
  }
}

/* Viewer V3: light AvaSeminar skin */
.viewer-shell {
  --viewer-v3-bg: #fbfbf7;
  --viewer-v3-surface: rgba(255, 255, 255, 0.78);
  --viewer-v3-surface-strong: rgba(255, 255, 255, 0.92);
  --viewer-v3-text: #121212;
  --viewer-v3-muted: #68645d;
  --viewer-v3-line: rgba(18, 18, 18, 0.1);
  --viewer-v3-line-strong: rgba(18, 18, 18, 0.16);
  --viewer-v3-accent: #2f5cff;
  --viewer-v3-accent-soft: rgba(47, 92, 255, 0.08);
  color: var(--viewer-v3-text);
  background:
    radial-gradient(circle at top left, rgba(255, 147, 92, 0.18), transparent 28%),
    radial-gradient(circle at top right, rgba(36, 87, 245, 0.12), transparent 32%),
    linear-gradient(180deg, #fcf8f1 0%, #f7f3eb 46%, #fffdf8 100%);
}

.viewer-shell .present-topbar {
  background: rgba(255, 255, 255, 0.86);
  border-bottom: 1px solid var(--viewer-v3-line);
}

.viewer-shell .brand strong,
.viewer-shell .viewer-head h1,
.viewer-shell .viewer-qa-popup-head h2,
.viewer-shell .section-copy h2 {
  color: var(--viewer-v3-text);
}

.viewer-shell .brand small,
.viewer-shell .topbar-actions a,
.viewer-shell .hint,
.viewer-shell .section-copy p,
.viewer-shell .project-meta,
.viewer-shell .scene-source,
.viewer-shell #viewer-meta {
  color: var(--viewer-v3-muted);
}

.viewer-shell .card,
.viewer-shell .viewer-stage,
.viewer-shell .viewer-assistant-card,
.viewer-shell .scene-button {
  color: var(--viewer-v3-text);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--viewer-v3-line);
  box-shadow: 0 14px 34px rgba(82, 68, 38, 0.08);
}

.viewer-shell .slide-stage {
  border-color: var(--viewer-v3-line);
  background:
    radial-gradient(circle at top left, rgba(47, 92, 255, 0.08), transparent 32%),
    rgba(255, 255, 255, 0.76);
}

.viewer-shell .button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--viewer-v3-accent), #5b87ff);
  box-shadow: 0 18px 34px rgba(36, 87, 245, 0.24);
}

.viewer-shell .button-secondary,
.viewer-shell .button-ghost,
.viewer-shell .scene-button,
.viewer-shell .panel-close {
  color: var(--viewer-v3-text);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--viewer-v3-line);
}

.viewer-shell .scene-button.active {
  color: #fff;
  background: linear-gradient(135deg, var(--viewer-v3-accent), #7d8eff);
  border-color: transparent;
}

.viewer-shell .viewer-intro {
  background:
    radial-gradient(circle at top right, rgba(47, 92, 255, 0.06), transparent 28%),
    rgba(255, 255, 255, 0.94);
  border-color: var(--viewer-v3-line-strong);
}

.viewer-shell .viewer-assistant-card {
  background: transparent;
  border: 0;
  border-left: 1px solid var(--viewer-v3-line);
  border-radius: 0;
  box-shadow: none;
}

.viewer-shell .eyebrow {
  background: rgba(36, 87, 245, 0.08);
  color: var(--viewer-v3-accent);
  border: 1px solid rgba(36, 87, 245, 0.08);
}

.viewer-shell .viewer-head h1 {
  font-family: "Space Grotesk", "Instrument Sans", sans-serif;
  letter-spacing: -0.04em;
}

@media (max-width: 1120px) {
  .viewer-shell .viewer-layout {
    grid-template-columns: 1fr;
  }

  .viewer-assistant-card {
    min-height: auto;
    padding: 18px 0 0 0;
    border-left: 0;
  }
}

@media (max-width: 760px) {
  .viewer-shell .present-topbar,
  .viewer-shell .viewer-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .viewer-shell .present-layout,
  .viewer-shell .viewer-layout {
    padding: 20px 16px 28px;
  }

  .viewer-shell .viewer-qa-popup {
    padding: 12px;
  }

  .viewer-shell .viewer-qa-popup-panel {
    width: 100%;
    height: 88vh;
    padding: 14px;
    border-radius: 22px;
  }

  .viewer-shell .viewer-qa-popup-head {
    flex-direction: column;
  }

  .viewer-shell .brand img {
    width: 156px;
    height: 40px;
  }
}

/* Studio polish v4: slimmer, cleaner builder shell */
.present-shell {
  --studio-v4-bg: #fbf8f2;
  --studio-v4-sidebar: #f4f1ea;
  --studio-v4-surface: rgba(255, 255, 255, 0.82);
  --studio-v4-surface-strong: rgba(255, 255, 255, 0.94);
  --studio-v4-text: #111217;
  --studio-v4-muted: #6c6871;
  --studio-v4-line: rgba(18, 18, 18, 0.09);
  --studio-v4-line-strong: rgba(18, 18, 18, 0.14);
  --studio-v4-accent: #3157ff;
}

.present-shell {
  background:
    radial-gradient(circle at 10% 10%, rgba(255, 224, 200, 0.58), transparent 28%),
    radial-gradient(circle at 85% 12%, rgba(216, 224, 255, 0.74), transparent 30%),
    linear-gradient(120deg, #fcf8f1 0%, #f7f5fb 64%, #f3f7ff 100%);
  color: var(--studio-v4-text);
  font-family: Inter, "Noto Sans TC", "PingFang TC", "Microsoft JhengHei",
    system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.present-shell button,
.present-shell input,
.present-shell select,
.present-shell textarea {
  font-family: inherit;
}

.present-shell .present-topbar {
  min-height: 68px;
  padding: 12px 32px;
  background: rgba(255, 255, 255, 0.62);
  border-bottom: 1px solid var(--studio-v4-line);
  backdrop-filter: blur(16px);
}

.present-shell .brand {
  width: auto;
  gap: 12px;
}

.present-shell .brand img {
  width: 164px;
  height: 42px;
}

.present-shell .topbar-actions {
  gap: 14px;
}

.present-shell .topbar-actions a {
  padding: 8px 12px;
  color: var(--studio-v4-muted);
  background: rgba(255, 255, 255, 0.56);
  border: 1px solid var(--studio-v4-line);
  border-radius: 999px;
}

.present-shell .topbar-actions a:hover {
  color: var(--studio-v4-text);
  background: rgba(255, 255, 255, 0.84);
}

.present-shell .present-layout {
  grid-template-columns: 286px minmax(0, 1fr);
  max-width: 1480px;
  gap: 0;
  padding: 0;
  min-height: calc(100vh - 68px);
}

.present-shell .studio-sidebar {
  position: sticky;
  top: 68px;
  gap: 20px;
  min-height: calc(100vh - 68px);
  padding: 22px 18px 28px;
  background: var(--studio-v4-sidebar);
  border-right: 1px solid var(--studio-v4-line);
}

.present-shell .studio-sidebar-section {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--studio-v4-line);
}

.present-shell .studio-sidebar-section:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.present-shell .studio-sidebar-intro {
  gap: 10px;
}

.present-shell .studio-sidebar-divider {
  height: 1px;
  margin: 6px 0 0;
  background: var(--studio-v4-line);
}

.present-shell .studio-intro-title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}

.present-shell .sidebar-label {
  margin: 0;
  color: var(--studio-v4-accent);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.present-shell .studio-sidebar h1,
.present-shell .studio-sidebar h2,
.present-shell .workspace-summary-copy h2,
.present-shell .studio-empty h2,
.present-shell .viewer-head h1,
.present-shell .viewer-qa-popup-head h2 {
  font-family: Inter, "Noto Sans TC", system-ui, sans-serif;
  letter-spacing: -0.04em;
}

.present-shell .studio-sidebar h1 {
  margin: 0;
  font-size: 1rem;
  font-weight: 750;
  line-height: 1.1;
}

.present-shell .studio-sidebar h2 {
  margin: 0;
  font-size: 0.98rem;
  font-weight: 700;
}

.present-shell .sidebar-section-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
}

.present-shell .sidebar-copy,
.present-shell .hint,
.present-shell .navigator-empty,
.present-shell .project-meta,
.present-shell .scene-button-copy span,
.present-shell .scene-source,
.present-shell .create-panel-copy,
.present-shell .workspace-section-head p,
.present-shell .studio-empty p,
.present-shell .viewer-setup-status,
.present-shell #workspace-meta,
.present-shell #viewer-meta {
  color: var(--studio-v4-muted);
}

.present-shell .sidebar-copy,
.present-shell .create-panel-copy,
.present-shell .workspace-section-head p,
.present-shell .studio-empty p {
  line-height: 1.58;
}

.present-shell .sidebar-create-button {
  width: 100%;
  justify-self: stretch;
}

.present-shell #navigator-card {
  background: transparent;
  border: 0;
  padding: 0;
}

.present-shell .navigator-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.present-shell .navigator-tab {
  min-height: 38px;
  padding: 0 12px;
  color: var(--studio-v4-muted);
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid var(--studio-v4-line);
  border-radius: 12px;
}

.present-shell .navigator-tab.active {
  color: var(--studio-v4-text);
  background: var(--studio-v4-surface-strong);
  border-color: var(--studio-v4-line-strong);
}

.present-shell .project-list,
.present-shell .scene-list {
  gap: 8px;
  max-height: 212px;
  padding-right: 2px;
}

.present-shell .project-item,
.present-shell .scene-button {
  display: grid;
  gap: 3px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.56);
  border: 1px solid transparent;
  border-radius: 14px;
}

.present-shell .project-item {
  display: flex;
  align-items: center;
  gap: 10px;
}

.present-shell .project-item.active,
.present-shell .scene-button.active {
  background: rgba(255, 255, 255, 0.88);
  border-color: var(--studio-v4-line);
  box-shadow: 0 12px 24px rgba(18, 18, 18, 0.05);
}

.present-shell .project-item strong,
.present-shell .scene-button strong {
  color: var(--studio-v4-text);
  font-size: 0.92rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.present-shell .project-delete-button {
  background: rgba(255, 255, 255, 0.68);
  border-color: var(--studio-v4-line);
}

.present-shell .studio-main {
  padding: 26px 42px 56px;
  background: transparent;
}

.present-shell .create-panel,
.present-shell .studio-empty,
.present-shell .workspace-head,
.present-shell .workspace-panel {
  margin: 0;
  padding: 0 0 28px;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--studio-v4-line);
  border-radius: 0;
  box-shadow: none;
}

.present-shell .studio-empty,
.present-shell .workspace-head,
.present-shell .workspace-panel {
  margin-top: 26px;
}

.present-shell .workspace-head {
  margin-top: 0;
}

.present-shell .workspace-summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: end;
}

.present-shell .workspace-summary-copy {
  display: grid;
  gap: 8px;
  max-width: 920px;
}

.present-shell .workspace-title-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.present-shell .workspace-summary-copy h2 {
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 0.98;
}

.present-shell #workspace-meta {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(18, 18, 18, 0.06);
}

.present-shell .workspace-toolbar {
  display: grid;
  gap: 8px;
  justify-items: end;
}

.present-shell .workspace-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.present-shell .workspace-actions-secondary {
  justify-content: flex-end;
}

.present-shell .workspace-more-actions {
  display: grid;
  justify-items: end;
}

.present-shell .workspace-more-actions > summary {
  list-style: none;
}

.present-shell .workspace-more-actions > summary::-webkit-details-marker {
  display: none;
}

.present-shell .workspace-more-actions-panel {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 8px;
  padding: 12px;
  border: 1px solid var(--studio-v4-line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.66);
  box-shadow: 0 12px 28px rgba(18, 18, 18, 0.05);
}

.present-shell .button-primary,
.present-shell .button-secondary,
.present-shell .button-ghost,
.present-shell .panel-close {
  min-height: 38px;
  padding: 0 14px;
  font-family: inherit;
  border-radius: 12px;
  box-shadow: none;
}

.present-shell .button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--studio-v4-accent), #6f7eff);
}

.present-shell .button-secondary,
.present-shell .button-ghost,
.present-shell .panel-close {
  color: var(--studio-v4-text);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--studio-v4-line);
}

.present-shell .button-ghost {
  color: var(--studio-v4-accent);
}

.present-shell .button-danger {
  color: #b74343;
  border-color: rgba(183, 67, 67, 0.24);
}

.present-shell .upload-row {
  grid-template-columns: minmax(220px, 320px) minmax(340px, 1fr);
  gap: 18px;
}

.present-shell .file-drop {
  min-height: 184px;
  justify-items: center;
  text-align: center;
  border: 1px solid var(--studio-v4-line);
  border-radius: 20px;
  background:
    radial-gradient(circle at top, rgba(140, 203, 255, 0.28), transparent 44%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(250, 246, 255, 0.96));
}

.present-shell .file-drop-name {
  color: var(--studio-v4-text);
}

.present-shell .file-drop-icon {
  width: 56px;
  height: 56px;
  font-size: 2.15rem;
}

.present-shell .field input,
.present-shell .field select,
.present-shell .field textarea {
  padding: 12px 14px;
  color: var(--studio-v4-text);
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid var(--studio-v4-line);
  border-radius: 16px;
}

.present-shell .field textarea {
  min-height: 300px;
  line-height: 1.6;
}

.present-shell .create-panel-advanced,
.present-shell .viewer-setup-advanced,
.present-shell .scene-details {
  border-color: var(--studio-v4-line);
  background: rgba(255, 255, 255, 0.66);
}

.present-shell .active-scene-layout {
  display: grid;
  grid-template-columns: minmax(420px, 0.92fr) minmax(0, 1.08fr);
  gap: 24px;
  align-items: start;
}

.present-shell .scene-preview {
  overflow: hidden;
  border: 1px solid var(--studio-v4-line);
  border-radius: 20px;
  background: linear-gradient(180deg, #ffffff, #f8f7fb);
  box-shadow: 0 18px 40px rgba(18, 18, 18, 0.05);
}

.present-shell .scene-editor-panel,
.present-shell .scene-preview-panel {
  gap: 12px;
}

.present-shell .scene-editor-head strong {
  font-size: 1.35rem;
}

.present-shell .scene-status {
  color: var(--studio-v4-accent);
  font-size: 0.9rem;
}

.present-shell .cohost-editor {
  display: grid;
  gap: 12px;
  margin-top: 14px;
  padding-top: 16px;
  border-top: 1px solid var(--studio-v4-line);
}

.present-shell .cohost-editor-hint {
  margin: 0;
  max-width: 78ch;
}

.present-shell .cohost-message-list {
  display: grid;
  gap: 10px;
}

.present-shell .cohost-message-card {
  display: grid;
  gap: 12px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--studio-v4-line);
  border-radius: 16px;
  box-shadow: 0 12px 26px rgba(18, 18, 18, 0.04);
}

.present-shell .cohost-message-card-head {
  display: grid;
  grid-template-columns: minmax(110px, 140px) minmax(0, 1fr) auto;
  gap: 10px;
  align-items: start;
}

.present-shell .cohost-message-badges {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.present-shell .cohost-purpose-badge,
.present-shell .cohost-timing-badge {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 9px;
  border-radius: 999px;
  background: rgba(18, 18, 18, 0.06);
  color: var(--studio-v4-muted);
  font-size: 12px;
  font-weight: 700;
}

.present-shell .cohost-emoji-field {
  gap: 6px;
}

.present-shell .cohost-emoji-field input,
.present-shell .cohost-message-card textarea {
  background: rgba(255, 255, 255, 0.9);
}

.present-shell .cohost-message-card textarea {
  min-height: 92px;
}

.present-shell .cohost-empty-state {
  margin: 0;
  color: var(--studio-v4-muted);
}

.present-shell .workspace-panel.viewer-setup-card,
.present-shell .workspace-panel.project-settings-card,
.present-shell .workspace-panel.avatar-settings-card {
  padding-top: 0;
}

.present-shell .viewer-setup-grid,
.present-shell .create-panel-advanced-grid,
.present-shell .workspace-settings,
.present-shell .workspace-narrative-settings {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.present-shell .workspace-settings {
  gap: 14px;
}

.present-shell .workspace-avatar-settings {
  grid-template-columns: minmax(0, 1fr);
}

.present-shell .field-readonly {
  padding: 14px;
  background: rgba(255, 255, 255, 0.66);
  border: 1px solid var(--studio-v4-line);
}

.present-shell .field-readonly strong {
  color: var(--studio-v4-text);
}

.present-shell .workspace-voice-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.present-shell .preview-grid {
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.9fr) minmax(0, 0.9fr);
  gap: 14px;
}

.present-shell .preview-launch-card {
  display: grid;
  gap: 12px;
  min-height: 100%;
  padding: 20px;
  border: 1px solid var(--studio-v4-line);
  border-radius: 22px;
  background:
    radial-gradient(circle at top left, rgba(71, 93, 255, 0.12), transparent 34%),
    radial-gradient(circle at bottom right, rgba(245, 130, 88, 0.12), transparent 28%),
    rgba(255, 255, 255, 0.76);
  box-shadow: 0 12px 30px rgba(82, 68, 38, 0.06);
}

.present-shell .preview-launch-card-primary {
  border-color: rgba(71, 93, 255, 0.18);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(248, 244, 236, 0.96)),
    radial-gradient(circle at top right, rgba(71, 93, 255, 0.16), transparent 34%);
}

.present-shell .preview-launch-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--studio-v4-accent);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.present-shell .preview-launch-meta {
  display: grid;
  gap: 6px;
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.76);
}

.present-shell .preview-launch-meta span {
  color: var(--studio-v4-muted);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.present-shell .preview-launch-meta strong {
  font-size: 1rem;
  line-height: 1.2;
}

.present-shell .workspace-panel[hidden],
.present-shell .navigator-panel[hidden],
.present-shell #navigator-card[hidden],
.present-shell #create-panel[hidden] {
  display: none !important;
}

@media (max-width: 1180px) {
  .present-shell .present-layout {
    grid-template-columns: 248px minmax(0, 1fr);
  }

  .present-shell .upload-row,
  .present-shell .active-scene-layout,
  .present-shell .viewer-setup-grid,
  .present-shell .create-panel-advanced-grid,
  .present-shell .workspace-settings,
  .present-shell .workspace-narrative-settings,
  .present-shell .workspace-voice-grid,
  .present-shell .preview-grid {
    grid-template-columns: 1fr;
  }

  .present-shell .workspace-summary {
    grid-template-columns: 1fr;
  }

  .present-shell .workspace-toolbar {
    justify-items: start;
  }

  .present-shell .workspace-actions {
    justify-content: flex-start;
  }

  .present-shell .viewer-setup-span-2 {
    grid-column: auto;
  }
}

@media (max-width: 900px) {
  .present-shell .present-layout {
    grid-template-columns: 1fr;
  }

  .present-shell .present-topbar {
    padding: 12px 18px;
  }

  .present-shell .studio-sidebar {
    position: static;
    min-height: 0;
    border-right: 0;
    border-bottom: 1px solid var(--studio-v4-line);
  }

  .present-shell .studio-main {
    padding: 22px 18px 42px;
  }
}

@media (max-width: 640px) {
  .present-shell .present-topbar,
  .present-shell .workspace-section-head,
  .present-shell .create-panel-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .present-shell .topbar-actions,
  .present-shell .workspace-actions,
  .present-shell .upload-actions {
    width: 100%;
  }

  .present-shell .workspace-actions .button-primary,
  .present-shell .workspace-actions .button-secondary,
  .present-shell .workspace-actions .button-ghost,
  .present-shell .upload-actions .button-primary,
  .present-shell .upload-actions .button-ghost {
    width: 100%;
  }

  .present-shell .brand img {
    width: 156px;
    height: 40px;
  }
}