:root {
  color-scheme: dark;
  --bg: #0d1013;
  --panel: #151a1f;
  --panel-2: #1b2228;
  --line: #2e3942;
  --line-strong: #53616c;
  --text: #edf3f6;
  --muted: #9aa9b2;
  --accent: #58c4dd;
  --accent-2: #f3a640;
  --good: #7bcf9a;
  --bad: #ff746f;
  --shadow: 0 22px 80px rgba(0, 0, 0, 0.35);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-shell:has(.workspace:not(.hidden)) {
  height: 100dvh;
  overflow: hidden;
}

.topbar {
  min-height: 64px;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 0 22px;
  border-bottom: 1px solid var(--line);
  background: rgba(13, 16, 19, 0.96);
  position: sticky;
  top: 0;
  z-index: 20;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 230px;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
}

.brand-mark {
  width: 18px;
  height: 18px;
  border: 2px solid var(--accent);
  border-radius: 4px;
  box-shadow: inset 0 0 0 3px rgba(88, 196, 221, 0.18);
}

nav {
  display: flex;
  gap: 6px;
  flex: 1;
}

.hidden {
  display: none !important;
}

.account-area {
  display: flex;
  align-items: center;
  gap: 8px;
}

.account-chip {
  min-width: 86px;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  text-align: center;
  font-size: 13px;
}

.account-button {
  white-space: nowrap;
}

.nav-link,
.text-button,
.tool,
.chip,
.primary-button,
.icon-button {
  border: 1px solid var(--line);
  color: var(--text);
  background: var(--panel-2);
  text-decoration: none;
  border-radius: 6px;
}

.nav-link {
  padding: 9px 12px;
  color: var(--muted);
}

.nav-link.active,
.nav-link:hover,
.tool.active,
.chip:hover {
  color: var(--text);
  border-color: var(--accent);
}

.project-status {
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-pill {
  min-width: 96px;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  text-align: center;
  font-size: 13px;
}

.status-pill.online {
  color: var(--good);
  border-color: rgba(123, 207, 154, 0.45);
}

.status-pill.error {
  color: var(--bad);
  border-color: rgba(255, 116, 111, 0.45);
}

.text-button,
.tool,
.chip,
.primary-button,
.icon-button {
  padding: 9px 11px;
}

.primary-button {
  width: 100%;
  background: var(--accent);
  border-color: var(--accent);
  color: #071014;
  font-weight: 700;
}

.icon-button {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  font-size: 24px;
  line-height: 1;
}

.workspace {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(312px, 384px) minmax(420px, 1fr);
  min-height: 0;
  overflow: hidden;
}

.simple-page {
  flex: 1;
  min-height: calc(100vh - 64px);
  padding: 28px 22px;
  background: #0d1013;
}

.route-root {
  flex: 1;
}

.landing-shell,
.auth-shell {
  min-height: calc(100vh - 64px);
  padding: 28px 22px;
  background: #0d1013;
}

.landing-shell {
  display: grid;
  align-items: center;
}

.landing-shell.public-center {
  place-items: center;
  text-align: center;
}

.landing-copy {
  width: min(100%, 760px);
  display: grid;
  gap: 16px;
}

.public-center .landing-copy {
  justify-items: center;
  margin-inline: auto;
}

.landing-copy h1 {
  max-width: 720px;
  font-size: clamp(34px, 5vw, 68px);
  line-height: 0.98;
}

.landing-copy p {
  max-width: 620px;
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.55;
}

.auth-shell {
  display: grid;
  place-items: center;
}

.auth-panel {
  width: min(100%, 440px);
  display: grid;
  gap: 16px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.auth-pending {
  width: min(100%, 560px);
}

.auth-header {
  display: grid;
  gap: 8px;
}

.auth-header p,
.auth-panel p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.auth-form {
  display: grid;
  gap: 8px;
}

.auth-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.inline-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: auto;
}

.auth-switch {
  font-size: 13px;
}

.auth-switch a {
  color: var(--accent);
}

.auth-message {
  min-height: 20px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.4;
}

.auth-message.error {
  color: var(--bad);
}

.auth-message.success {
  color: var(--good);
}

.public-start-button {
  width: min(260px, 100%);
  margin-top: 8px;
}

.public-step-shell {
  min-height: calc(100vh - 64px);
  display: grid;
  place-items: center;
  padding: 28px 22px;
  background: #0d1013;
}

.public-step-panel {
  width: min(100%, 860px);
  display: grid;
  gap: 16px;
}

.public-step-panel h1 {
  max-width: 680px;
}

.public-choice-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
}

.public-choice-card {
  min-height: 88px;
  display: grid;
  align-content: center;
  gap: 6px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(21, 26, 31, 0.92);
  color: var(--text);
  text-align: left;
}

.public-choice-card:hover,
.public-choice-card:focus-visible {
  border-color: var(--accent);
  outline: none;
}

.public-choice-card span {
  color: var(--muted);
  font-size: 13px;
}

.public-viewer-shell {
  position: relative;
  min-height: calc(100vh - 64px);
  background: #07090b;
}

.public-viewer-host {
  position: absolute;
  inset: 0;
}

.public-viewer-host canvas {
  display: block;
}

.public-viewer-loader {
  position: absolute;
  inset: 0;
  z-index: 15;
  display: grid;
  place-items: center;
  background: rgba(7, 9, 11, 0.34);
  color: var(--text);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 140ms ease, visibility 0s linear 140ms;
}

.public-viewer-loader.active {
  opacity: 1;
  visibility: visible;
  transition: opacity 140ms ease, visibility 0s linear 0s;
}

.public-viewer-loader > span:last-child {
  display: block;
  margin-top: 56px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(13, 16, 19, 0.78);
  font-size: 13px;
}

.loading-spinner {
  width: 42px;
  height: 42px;
  border: 3px solid rgba(237, 243, 246, 0.22);
  border-top-color: var(--accent);
  border-radius: 999px;
  animation: spin 820ms linear infinite;
}

.public-slot-layer {
  position: absolute;
  inset: 0;
  z-index: 11;
  pointer-events: none;
}

.public-slot-tile {
  position: absolute;
  width: clamp(180px, 18vw, 250px);
  display: grid;
  gap: 6px;
  padding: 8px;
  border: 1px solid rgba(88, 196, 221, 0.38);
  border-radius: 8px;
  background: rgba(16, 21, 26, 0.92);
  box-shadow: var(--shadow);
  pointer-events: auto;
  transform: translate(-50%, -50%);
}

.public-viewer-toolbar {
  position: absolute;
  top: 14px;
  left: 14px;
  right: 14px;
  z-index: 12;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  pointer-events: none;
}

.public-viewer-toolbar > * {
  pointer-events: auto;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.public-viewer-toolbar span {
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(13, 16, 19, 0.76);
  color: var(--muted);
  font-size: 13px;
}

.blank-page-panel {
  max-width: 960px;
  min-height: 360px;
  display: grid;
  align-content: start;
  gap: 8px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.panel {
  background: var(--panel);
  border-right: 1px solid var(--line);
  padding: 18px;
  min-height: 0;
  overflow: auto;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 16px;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  font-size: 22px;
  line-height: 1.15;
}

.field-label,
.section-title {
  display: block;
  margin: 18px 0 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.text-input,
.select-input,
.file-input {
  width: 100%;
  height: 40px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #0d1115;
  color: var(--text);
  outline: none;
}

.text-input:focus,
.select-input:focus,
.file-input:focus {
  border-color: var(--accent);
}

.file-input {
  height: auto;
  padding: 10px;
  color: var(--muted);
}

.file-input::file-selector-button {
  margin-right: 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
  color: var(--text);
  padding: 8px 10px;
  cursor: pointer;
}

.asset-actions,
.scene-buttons {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.asset-actions {
  grid-template-columns: 1fr;
}

.scene-panel {
  margin-top: 18px;
  padding-top: 2px;
  border-top: 1px solid var(--line);
}

.compact-label {
  margin-top: 8px;
}

.slot-position-panel {
  margin-top: 18px;
  padding-top: 2px;
  border-top: 1px solid var(--line);
}

.slot-list {
  display: none;
}

.slot-tile-layer {
  --slot-safe-top: 76px;
  --slot-tile-width: clamp(126px, 12.5vw, 210px);
  --slot-tile-focused-width: clamp(172px, 21vw, 300px);
  --slot-tile-gap: clamp(4px, 0.5vw, 7px);
  --slot-tile-padding: clamp(6px, 0.55vw, 8px);
  --slot-tile-font-size: clamp(9px, 0.68vw, 11px);
  --slot-tile-button-height: clamp(26px, 2.1vw, 32px);
  --slot-tile-handle-width: clamp(40px, 3.2vw, 48px);
  --slot-depth-scale: 1;
  position: absolute;
  inset: 0;
  z-index: 11;
  pointer-events: none;
}

.slot-empty-note {
  position: absolute;
  top: var(--slot-safe-top);
  left: 14px;
  max-width: 260px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(16, 21, 26, 0.9);
  color: var(--muted);
  font-size: 12px;
}

.slot-tile {
  position: absolute;
  width: var(--slot-tile-width);
  display: grid;
  gap: var(--slot-tile-gap);
  padding: var(--slot-tile-padding);
  border: 1px solid rgba(88, 196, 221, 0.32);
  border-radius: 8px;
  background: rgba(16, 21, 26, 0.9);
  box-shadow: var(--shadow);
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  cursor: grab;
  touch-action: none;
  translate: -50% -50%;
  scale: var(--slot-depth-scale);
  transition: opacity 160ms ease, scale 160ms ease, visibility 0s linear 0s, border-color 120ms ease, background 120ms ease;
}

.slot-tile.dragging {
  border-color: var(--accent);
  background: rgba(21, 26, 31, 0.96);
  cursor: grabbing;
}

.slot-tile.focused {
  width: var(--slot-tile-focused-width);
  border-color: rgba(88, 196, 221, 0.74);
  background: rgba(16, 21, 26, 0.96);
  scale: calc(var(--slot-depth-scale) * 1.04);
}

.slot-tile.faded {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  scale: calc(var(--slot-depth-scale) * 0.94);
  transition: opacity 160ms ease, scale 160ms ease, visibility 0s linear 160ms, border-color 120ms ease, background 120ms ease;
}

.slot-tile-header {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--slot-tile-gap);
  align-items: center;
}

.slot-label {
  color: var(--muted);
  font-size: var(--slot-tile-font-size);
  font-weight: 800;
  text-transform: uppercase;
}

.slot-drag-handle {
  min-width: var(--slot-tile-handle-width);
  height: var(--slot-tile-button-height);
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
  color: var(--text);
  font-size: var(--slot-tile-font-size);
  cursor: grab;
  touch-action: none;
}

.slot-tile :is(select, option, input, button, label) {
  touch-action: auto;
}

.slot-drag-handle:active {
  cursor: grabbing;
}

.slot-tile-controls {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--slot-tile-gap);
}

.slot-add-button,
.slot-relation-button,
.slot-upload-button {
  height: var(--slot-tile-button-height);
  padding-inline: clamp(5px, 0.6vw, 8px);
  font-size: var(--slot-tile-font-size);
}

.slot-select {
  min-width: 0;
  font-size: var(--slot-tile-font-size);
}

.slot-file-input {
  display: none;
}

.asset-details {
  min-height: 74px;
  margin-top: 14px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #10151a;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.selected-panel {
  margin-top: 18px;
  padding-top: 2px;
  border-top: 1px solid var(--line);
}

.asset-list,
.object-list {
  display: grid;
  gap: 8px;
}

.asset-row,
.object-row {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #10151a;
  color: var(--text);
  text-align: left;
}

.asset-row:hover,
.object-row:hover,
.object-row.selected {
  border-color: var(--accent);
}

.asset-meta,
.object-meta,
.panel-note {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.viewport-region {
  position: relative;
  min-height: 0;
  height: 100%;
  background: #07090b;
  overflow: hidden;
}

.sr-status {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.scene-host {
  position: absolute;
  inset: 0;
  outline: none;
}

.scene-host canvas {
  display: block;
}

.scene-toolbar {
  position: absolute;
  top: 14px;
  left: 14px;
  right: 14px;
  z-index: 20;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tool {
  min-width: 72px;
  background: rgba(21, 26, 31, 0.88);
  box-shadow: var(--shadow);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

.tool.danger {
  color: var(--bad);
}

.viewport-hint {
  position: absolute;
  left: 16px;
  bottom: 14px;
  z-index: 10;
  max-width: min(680px, calc(100% - 32px));
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(13, 16, 19, 0.72);
  color: var(--muted);
  font-size: 13px;
}

.transform-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.transform-summary {
  grid-column: 1 / -1;
  display: grid;
  gap: 3px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #10151a;
  color: var(--text);
  font-size: 13px;
  line-height: 1.35;
}

.transform-summary span {
  color: var(--muted);
  font-size: 12px;
}

.relation-controls {
  grid-column: 1 / -1;
  display: grid;
  gap: 8px;
}

.relation-button {
  height: 40px;
}

.object-state-controls {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.toggle-control {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 38px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #10151a;
  color: var(--text);
  font-size: 13px;
}

.toggle-control input {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

.camera-default-controls {
  grid-column: 1 / -1;
  display: grid;
  gap: 8px;
}

.camera-default-button {
  height: 40px;
}

.color-controls {
  grid-column: 1 / -1;
  display: grid;
  gap: 6px;
}

.color-controls label {
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
}

.transform-cell label {
  display: block;
  margin-bottom: 5px;
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
}

.transform-cell input {
  width: 100%;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #0d1115;
  color: var(--text);
  padding: 0 8px;
  outline: none;
}

.transform-cell input:focus {
  border-color: var(--accent);
}

.about-band {
  display: grid;
  grid-template-columns: minmax(220px, 320px) minmax(0, 680px);
  gap: 24px;
  padding: 34px 22px 46px;
  border-top: 1px solid var(--line);
  background: #10151a;
}

.about-band p:last-child {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

@media (max-width: 1080px) {
  .workspace {
    grid-template-columns: 336px 1fr;
  }
}

@media (max-width: 760px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding: 14px;
  }

  .brand {
    min-width: 0;
  }

  nav,
  .account-area,
  .project-status {
    width: 100%;
  }

  .account-area,
  .auth-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .landing-shell,
  .auth-shell,
  .public-step-shell {
    padding: 18px 14px;
  }

  .public-choice-grid {
    grid-template-columns: 1fr;
  }

  .public-viewer-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .public-slot-tile {
    width: min(250px, calc(100vw - 28px));
  }

  .slot-tile-layer {
    --slot-tile-width: clamp(118px, 30vw, 188px);
    --slot-tile-focused-width: min(232px, calc(100vw - 28px));
    --slot-tile-gap: 5px;
    --slot-tile-padding: 7px;
    --slot-tile-font-size: 10px;
    --slot-tile-button-height: 29px;
    --slot-tile-handle-width: 44px;
  }

  .landing-copy h1 {
    font-size: 38px;
  }

  .workspace {
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow: hidden;
  }

  .viewport-region {
    order: -1;
    flex: 0 1 clamp(160px, 32dvh, 280px);
    height: auto;
    min-height: 0;
  }

  .panel {
    flex: 1 1 auto;
    min-height: 0;
    max-height: none;
    border-right: 0;
    border-top: 1px solid var(--line);
  }

  .scene-toolbar {
    position: absolute;
    top: 58px;
  }

  .tool {
    min-width: 0;
  }

  .slot-row {
    grid-template-columns: 1fr 1fr;
    align-items: stretch;
  }

  .slot-label,
  .slot-select {
    grid-column: 1 / -1;
  }

  .about-band {
    grid-template-columns: 1fr;
  }
}

/* Premium responsive UI system
   Mobile is the default; larger layouts are progressively enhanced below. */

:root {
  --bg: #070a0d;
  --bg-elevated: #0d1217;
  --panel: #111820;
  --panel-2: #18222c;
  --panel-glass: rgba(13, 19, 25, 0.9);
  --line: #2b3945;
  --line-strong: #607382;
  --text: #f4f8fa;
  --muted: #aab8c2;
  --accent: #69d6ed;
  --accent-strong: #8be5f5;
  --accent-2: #ffc064;
  --good: #8ee6ae;
  --bad: #ff8b86;
  --focus: #b9f2ff;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.48);
  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.3);
  --app-bar-height: 52px;
  --app-bar-safe-height: calc(var(--app-bar-height) + env(safe-area-inset-top, 0px));
  --control-height: 44px;
  --page-gutter: clamp(14px, 4vw, 24px);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

html {
  min-height: 100%;
  background: var(--bg);
  scroll-behavior: smooth;
}

body {
  min-width: 280px;
  min-height: 100%;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 85% -10%, rgba(105, 214, 237, 0.09), transparent 32rem),
    var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: rgba(105, 214, 237, 0.28);
  color: #fff;
}

button,
input,
select,
a {
  -webkit-tap-highlight-color: transparent;
}

button,
select,
input:not([type="checkbox"]):not([type="radio"]):not([type="color"]) {
  min-height: var(--control-height);
}

button {
  touch-action: manipulation;
}

button,
.nav-link,
.public-choice-card,
.asset-row,
.object-row,
.text-input,
.select-input,
.file-input,
.toggle-control {
  transition:
    color 160ms ease,
    background-color 160ms ease,
    border-color 160ms ease,
    box-shadow 160ms ease,
    opacity 160ms ease,
    transform 160ms ease;
}

:where(
  a,
  button,
  input,
  select,
  [tabindex]:not([tabindex="-1"])
):focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  box-shadow: 0 0 0 5px rgba(105, 214, 237, 0.2);
}

.app-shell,
.app-shell:has(.workspace:not(.hidden)) {
  min-height: 100vh;
  min-height: 100dvh;
}

.app-shell:has(.workspace:not(.hidden)) {
  height: 100vh;
  height: 100dvh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  min-height: var(--app-bar-safe-height);
  height: var(--app-bar-safe-height);
  flex-direction: row;
  align-items: center;
  gap: 8px;
  padding: env(safe-area-inset-top, 0px) max(12px, env(safe-area-inset-right, 0px)) 0 max(12px, env(safe-area-inset-left, 0px));
  border-color: rgba(96, 115, 130, 0.34);
  background: rgba(7, 10, 13, 0.9);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(18px) saturate(135%);
  -webkit-backdrop-filter: blur(18px) saturate(135%);
}

.brand {
  min-width: 0;
  flex: 1 1 auto;
  gap: 9px;
  overflow: hidden;
  font-size: 14px;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.brand > span:last-child {
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand-mark {
  width: 19px;
  height: 19px;
  flex: 0 0 auto;
  border-color: var(--accent-strong);
  border-radius: 5px;
  background: linear-gradient(145deg, rgba(105, 214, 237, 0.12), transparent);
  box-shadow:
    inset 0 0 0 3px rgba(105, 214, 237, 0.13),
    0 0 18px rgba(105, 214, 237, 0.14);
}

nav {
  width: auto;
  flex: 0 1 auto;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}

nav::-webkit-scrollbar {
  display: none;
}

.account-area,
.project-status {
  width: auto;
  flex: 0 0 auto;
  gap: 6px;
}

.account-chip,
.status-pill {
  min-width: 0;
  max-width: 110px;
  overflow: hidden;
  padding: 6px 9px;
  border-color: rgba(96, 115, 130, 0.5);
  color: var(--muted);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav-link,
.text-button,
.tool,
.chip,
.primary-button,
.icon-button {
  min-height: var(--control-height);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 13px;
  border-color: var(--line);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(30, 42, 53, 0.96), rgba(19, 28, 36, 0.96));
}

.nav-link {
  min-height: var(--control-height);
  padding-inline: 10px;
  color: var(--muted);
  font-size: 13px;
}

.nav-link.active,
.tool.active {
  border-color: rgba(105, 214, 237, 0.72);
  background: linear-gradient(180deg, rgba(33, 66, 76, 0.96), rgba(19, 42, 50, 0.96));
  color: var(--accent-strong);
  box-shadow: inset 0 0 0 1px rgba(105, 214, 237, 0.08);
}

.primary-button {
  border-color: var(--accent);
  background: linear-gradient(180deg, var(--accent-strong), var(--accent));
  color: #041014;
  box-shadow: 0 8px 24px rgba(105, 214, 237, 0.14);
}

.primary-button:active,
.text-button:active,
.tool:active,
.public-choice-card:active {
  transform: translateY(1px);
}

.icon-button {
  width: var(--control-height);
  height: var(--control-height);
  padding: 0;
}

.account-button {
  min-height: var(--control-height);
  padding-inline: 10px;
  font-size: 13px;
}

.route-root {
  min-height: calc(100vh - var(--app-bar-safe-height));
  min-height: calc(100dvh - var(--app-bar-safe-height));
}

.simple-page,
.landing-shell,
.auth-shell,
.public-step-shell {
  min-height: calc(100vh - var(--app-bar-safe-height));
  min-height: calc(100dvh - var(--app-bar-safe-height));
  padding: clamp(24px, 6vw, 56px) var(--page-gutter);
  background: transparent;
}

.landing-shell {
  position: relative;
  isolation: isolate;
}

.landing-shell::before {
  position: absolute;
  inset: 8% 7%;
  z-index: -1;
  content: "";
  border: 1px solid rgba(105, 214, 237, 0.1);
  border-radius: clamp(24px, 6vw, 56px);
  background:
    linear-gradient(135deg, rgba(105, 214, 237, 0.06), transparent 38%),
    rgba(17, 24, 32, 0.18);
  pointer-events: none;
}

.landing-copy {
  gap: 18px;
}

.landing-copy h1 {
  font-size: clamp(38px, 12vw, 72px);
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.landing-copy p {
  color: var(--muted);
  font-size: clamp(16px, 4vw, 18px);
}

.eyebrow,
.field-label,
.section-title {
  letter-spacing: 0.11em;
}

.eyebrow {
  color: var(--accent-strong);
}

.auth-panel,
.blank-page-panel {
  border-color: rgba(96, 115, 130, 0.45);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(145deg, rgba(105, 214, 237, 0.045), transparent 38%),
    var(--panel);
  box-shadow: var(--shadow);
}

.auth-panel {
  padding: clamp(20px, 6vw, 30px);
}

.auth-form {
  gap: 10px;
}

.auth-actions,
.account-area {
  display: flex;
}

.text-input,
.select-input,
.file-input,
.transform-cell input {
  min-height: var(--control-height);
  border-color: #344652;
  border-radius: var(--radius-sm);
  background: #090e13;
  color: var(--text);
}

.text-input:focus,
.select-input:focus,
.file-input:focus,
.transform-cell input:focus {
  border-color: var(--accent);
}

.text-input::placeholder {
  color: #7f909b;
}

.public-step-panel {
  gap: 20px;
}

.public-choice-grid {
  grid-template-columns: 1fr;
  gap: 12px;
}

.public-choice-card {
  position: relative;
  min-height: 100px;
  padding: 17px;
  overflow: hidden;
  border-color: rgba(96, 115, 130, 0.45);
  border-radius: var(--radius-md);
  background:
    linear-gradient(135deg, rgba(105, 214, 237, 0.055), transparent 58%),
    rgba(17, 24, 32, 0.94);
  box-shadow: var(--shadow-soft);
}

.public-choice-card::after {
  position: absolute;
  right: 15px;
  bottom: 13px;
  content: "→";
  color: var(--accent);
  font-size: 18px;
}

.public-viewer-shell {
  height: calc(100vh - var(--app-bar-safe-height));
  height: calc(100dvh - var(--app-bar-safe-height));
  min-height: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 42%, #17222b 0, #0a0e12 38%, #050709 72%);
}

.public-viewer-host,
.scene-host {
  touch-action: none;
}

.public-viewer-host canvas,
.scene-host canvas {
  width: 100%;
  height: 100%;
  outline: none;
}

.public-viewer-toolbar {
  top: max(10px, env(safe-area-inset-top, 0px));
  left: max(10px, env(safe-area-inset-left, 0px));
  right: max(10px, env(safe-area-inset-right, 0px));
  align-items: flex-start;
  flex-direction: row;
}

.public-viewer-toolbar span {
  min-width: 0;
  max-width: min(58vw, 360px);
  overflow: hidden;
  padding: 9px 11px;
  border-color: rgba(96, 115, 130, 0.48);
  border-radius: var(--radius-sm);
  background: var(--panel-glass);
  color: #c5d1d8;
  text-overflow: ellipsis;
  white-space: nowrap;
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.public-viewer-toolbar .text-button {
  flex: 0 0 auto;
  background: var(--panel-glass);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.public-viewer-loader {
  background: rgba(4, 7, 9, 0.6);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
}

.public-viewer-loader > span:last-child {
  border-color: rgba(96, 115, 130, 0.5);
  border-radius: var(--radius-sm);
  background: rgba(7, 11, 14, 0.92);
  color: #dbe4e9;
}

.loading-spinner {
  border-color: rgba(244, 248, 250, 0.2);
  border-top-color: var(--accent-strong);
  box-shadow: 0 0 28px rgba(105, 214, 237, 0.18);
}

/* Existing public slot controls become the mobile parts bottom sheet.
   The public-parts-* aliases are ready for future semantic markup. */
.public-slot-layer,
.public-parts-sheet {
  position: absolute;
  inset: auto 0 0;
  z-index: 30;
  height: auto;
  max-height: min(42dvh, 320px);
  display: flex;
  align-items: stretch;
  gap: 10px;
  padding:
    25px max(12px, env(safe-area-inset-right, 0px))
    max(12px, env(safe-area-inset-bottom, 0px))
    max(12px, env(safe-area-inset-left, 0px));
  overflow-x: auto;
  overflow-y: hidden;
  pointer-events: auto;
  overscroll-behavior: contain;
  scroll-padding-inline: 12px;
  scroll-snap-type: x proximity;
  scrollbar-color: rgba(105, 214, 237, 0.5) transparent;
  background:
    linear-gradient(180deg, rgba(17, 24, 32, 0.92), rgba(7, 11, 15, 0.98));
  border-top: 1px solid rgba(105, 214, 237, 0.22);
  border-radius: 18px 18px 0 0;
  box-shadow: 0 -18px 54px rgba(0, 0, 0, 0.42);
  backdrop-filter: blur(20px) saturate(130%);
  -webkit-backdrop-filter: blur(20px) saturate(130%);
}

.public-slot-layer::before,
.public-parts-sheet::before {
  position: absolute;
  top: 8px;
  left: 50%;
  width: 40px;
  height: 4px;
  border-radius: 999px;
  background: #52636f;
  content: "";
  transform: translateX(-50%);
}

.public-slot-tile,
.public-part-card {
  position: relative !important;
  top: auto !important;
  left: auto !important;
  width: min(78vw, 280px);
  min-width: min(78vw, 280px);
  min-height: 96px;
  align-content: center;
  gap: 8px;
  padding: 12px;
  border-color: rgba(105, 214, 237, 0.34);
  border-radius: var(--radius-md);
  background:
    linear-gradient(145deg, rgba(105, 214, 237, 0.07), transparent 58%),
    #111922;
  box-shadow: var(--shadow-soft);
  transform: none;
  scroll-snap-align: start;
}

.public-slot-tile .select-input,
.public-part-card .select-input {
  min-height: var(--control-height);
}

.public-slot-layer:empty,
.public-parts-sheet:empty {
  display: none;
}

.public-viewer-shell > .viewport-hint {
  right: 12px;
  bottom: calc(min(42dvh, 320px) + 10px);
  left: 12px;
  max-width: none;
}

.workspace {
  height: calc(100vh - var(--app-bar-safe-height));
  height: calc(100dvh - var(--app-bar-safe-height));
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.viewport-region {
  order: -1;
  flex: 0 0 clamp(250px, 44dvh, 430px);
  min-height: 0;
  height: auto;
  background:
    radial-gradient(circle at 50% 48%, #17222b 0, #090d11 46%, #050709 78%);
  border-bottom: 1px solid rgba(96, 115, 130, 0.3);
}

.panel {
  flex: 1 1 auto;
  min-height: 0;
  max-height: none;
  padding: 18px var(--page-gutter) max(20px, env(safe-area-inset-bottom, 0px));
  border: 0;
  background:
    linear-gradient(180deg, rgba(105, 214, 237, 0.025), transparent 140px),
    var(--panel);
  scrollbar-color: #405461 transparent;
  scrollbar-width: thin;
}

.panel::-webkit-scrollbar,
.public-slot-layer::-webkit-scrollbar {
  width: 7px;
  height: 7px;
}

.panel::-webkit-scrollbar-thumb,
.public-slot-layer::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: #405461;
}

.panel-header {
  margin-bottom: 12px;
}

.scene-panel,
.slot-position-panel,
.selected-panel {
  margin-top: 20px;
  border-color: rgba(96, 115, 130, 0.34);
}

.asset-actions,
.scene-buttons {
  gap: 10px;
}

.scene-toolbar {
  top: 8px;
  left: 8px;
  right: 8px;
  z-index: 20;
  flex-wrap: nowrap;
  gap: 6px;
  overflow-x: auto;
  padding: 2px 1px 8px;
  scrollbar-width: none;
}

.scene-toolbar::-webkit-scrollbar {
  display: none;
}

.tool {
  min-width: max-content;
  min-height: var(--control-height);
  padding-inline: 14px;
  background: rgba(17, 24, 32, 0.92);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.slot-tile-layer {
  --slot-safe-top: 66px;
  --slot-tile-width: clamp(120px, 34vw, 180px);
  --slot-tile-focused-width: min(256px, calc(100vw - 24px));
  --slot-tile-button-height: var(--control-height);
  --slot-tile-handle-width: 44px;
}

.slot-tile {
  border-color: rgba(105, 214, 237, 0.38);
  border-radius: var(--radius-md);
  background: rgba(12, 18, 24, 0.94);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.slot-drag-handle,
.slot-add-button,
.slot-relation-button,
.slot-upload-button {
  min-height: var(--control-height);
}

.slot-tile.focused {
  border-color: var(--accent);
  background: rgba(11, 18, 24, 0.98);
}

.slot-empty-note,
.viewport-hint {
  border-color: rgba(96, 115, 130, 0.46);
  border-radius: var(--radius-sm);
  background: rgba(7, 11, 15, 0.82);
  color: #b7c4cc;
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.viewport-hint {
  bottom: max(10px, env(safe-area-inset-bottom, 0px));
  left: 10px;
  max-width: calc(100% - 20px);
  padding: 8px 10px;
  font-size: 12px;
}

.asset-details,
.asset-row,
.object-row,
.transform-summary,
.toggle-control {
  border-color: rgba(96, 115, 130, 0.42);
  border-radius: var(--radius-sm);
  background: #0c1218;
}

.transform-grid {
  gap: 10px;
}

.transform-cell input {
  height: var(--control-height);
}

.toggle-control {
  min-height: var(--control-height);
}

.toggle-control input {
  width: 20px;
  height: 20px;
}

.about-band {
  grid-template-columns: 1fr;
  padding: 30px var(--page-gutter) 42px;
  border-color: rgba(96, 115, 130, 0.34);
  background: var(--bg-elevated);
}

/* Phones held sideways: preserve the model canvas and move parts/tools
   into a compact right-hand dock. */
@media (orientation: landscape) and (max-height: 560px) {
  .public-slot-layer,
  .public-parts-sheet {
    inset: 0 0 0 auto;
    width: min(340px, 42vw);
    max-height: none;
    flex-direction: column;
    padding:
      max(66px, env(safe-area-inset-top, 0px))
      max(10px, env(safe-area-inset-right, 0px))
      max(10px, env(safe-area-inset-bottom, 0px))
      10px;
    overflow-x: hidden;
    overflow-y: auto;
    scroll-snap-type: y proximity;
    border-top: 0;
    border-left: 1px solid rgba(105, 214, 237, 0.22);
    border-radius: 18px 0 0 18px;
    box-shadow: -18px 0 54px rgba(0, 0, 0, 0.4);
  }

  .public-slot-layer::before,
  .public-parts-sheet::before {
    top: 50%;
    left: 8px;
    width: 4px;
    height: 40px;
    transform: translateY(-50%);
  }

  .public-slot-tile,
  .public-part-card {
    width: 100%;
    min-width: 0;
    min-height: 90px;
    scroll-snap-align: start;
  }

  .public-viewer-toolbar {
    right: calc(min(340px, 42vw) + 10px);
  }

  .public-viewer-shell > .viewport-hint {
    right: calc(min(340px, 42vw) + 10px);
    bottom: max(8px, env(safe-area-inset-bottom, 0px));
  }

  .workspace {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 40vw);
    grid-template-rows: minmax(0, 1fr);
  }

  .viewport-region {
    order: 0;
    height: 100%;
    border-right: 1px solid rgba(96, 115, 130, 0.34);
    border-bottom: 0;
  }

  .panel {
    height: 100%;
    border-top: 0;
  }
}

@media (min-width: 560px) {
  .public-choice-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .asset-actions,
  .scene-buttons {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .public-slot-tile,
  .public-part-card {
    width: 270px;
    min-width: 270px;
  }
}

/* Tablet: the admin library becomes a persistent side panel. */
@media (min-width: 768px) and (min-height: 561px) {
  .topbar {
    gap: 16px;
    padding-inline: max(18px, env(safe-area-inset-left, 0px)) max(18px, env(safe-area-inset-right, 0px));
  }

  .brand {
    flex: 0 1 230px;
    font-size: 15px;
  }

  nav {
    flex: 1 1 auto;
  }

  .workspace {
    display: grid;
    grid-template-columns: clamp(290px, 34vw, 350px) minmax(0, 1fr);
    grid-template-rows: minmax(0, 1fr);
  }

  .panel {
    height: 100%;
    border-right: 1px solid rgba(96, 115, 130, 0.34);
  }

  .viewport-region {
    order: 0;
    height: 100%;
    border-bottom: 0;
  }

  .scene-toolbar {
    top: 12px;
    left: 12px;
    right: 12px;
    gap: 8px;
  }

  .slot-tile-layer {
    --slot-safe-top: 72px;
    --slot-tile-width: clamp(132px, 16vw, 196px);
    --slot-tile-focused-width: clamp(210px, 27vw, 290px);
  }

  .about-band {
    grid-template-columns: minmax(220px, 320px) minmax(0, 680px);
  }
}

/* Desktop viewer: public parts form a fixed side panel, leaving the model clear. */
@media (min-width: 1024px) and (min-height: 561px) {
  .public-choice-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .public-slot-layer,
  .public-parts-sheet {
    inset: 12px 12px 12px auto;
    width: clamp(280px, 25vw, 350px);
    max-height: none;
    flex-direction: column;
    padding: 18px 12px 12px;
    overflow-x: hidden;
    overflow-y: auto;
    scroll-snap-type: y proximity;
    border: 1px solid rgba(105, 214, 237, 0.22);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
  }

  .public-slot-layer::before,
  .public-parts-sheet::before {
    display: none;
  }

  .public-slot-tile,
  .public-part-card {
    width: 100%;
    min-width: 0;
  }

  .public-viewer-toolbar {
    right: calc(clamp(280px, 25vw, 350px) + 24px);
  }

  .public-viewer-shell > .viewport-hint {
    right: calc(clamp(280px, 25vw, 350px) + 24px);
    bottom: 14px;
  }

  .workspace {
    grid-template-columns: clamp(320px, 29vw, 390px) minmax(0, 1fr);
  }

  .panel {
    padding: 22px;
  }
}

@media (min-width: 1280px) and (min-height: 561px) {
  .workspace {
    grid-template-columns: 380px minmax(0, 1fr);
  }

  .scene-toolbar {
    left: 16px;
    right: 16px;
  }

  .public-choice-grid {
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  }
}

@media (hover: hover) and (pointer: fine) {
  .nav-link:hover,
  .text-button:hover,
  .tool:hover,
  .chip:hover {
    border-color: var(--accent);
    background: linear-gradient(180deg, rgba(37, 52, 64, 0.98), rgba(23, 34, 43, 0.98));
    color: var(--text);
  }

  .primary-button:hover {
    border-color: var(--accent-strong);
    background: linear-gradient(180deg, #a5effb, var(--accent-strong));
    box-shadow: 0 10px 30px rgba(105, 214, 237, 0.22);
  }

  .public-choice-card:hover,
  .asset-row:hover,
  .object-row:hover {
    border-color: var(--accent);
    transform: translateY(-1px);
  }
}

@media (prefers-contrast: more) {
  :root {
    --line: #617582;
    --line-strong: #91a3ad;
    --muted: #ced8de;
    --focus: #fff;
  }

  .topbar,
  .panel,
  .public-slot-layer,
  .public-parts-sheet {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .loading-spinner {
    animation: none;
    border-color: var(--accent);
    opacity: 0.82;
  }
}

/* Mobile builder integration */
.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.route-root h1[tabindex="-1"]:focus {
  outline: none;
}

.public-progress {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin: 0 0 8px;
  padding: 0;
  list-style: none;
}

.public-progress li {
  display: flex;
  align-items: center;
  gap: 7px;
  min-width: 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.public-progress li span {
  width: 28px;
  height: 28px;
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
}

.public-progress li.active,
.public-progress li.complete {
  color: var(--text);
}

.public-progress li.active span,
.public-progress li.complete span {
  border-color: var(--accent);
  color: #061014;
  background: var(--accent);
}

.public-step-copy {
  max-width: 620px;
  margin: -8px 0 2px;
  color: var(--muted);
  line-height: 1.55;
}

.public-back-button {
  width: max-content;
}

.public-asset-search {
  max-width: 480px;
}

.empty-state {
  display: grid;
  gap: 6px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
  color: var(--muted);
}

.empty-state strong {
  color: var(--text);
}

.app-shell:has(.public-viewer-shell) > .topbar {
  display: none;
}

.app-shell:has(.public-viewer-shell) .route-root {
  min-height: 100vh;
  min-height: 100dvh;
}

.public-viewer-shell {
  height: 100vh;
  height: 100dvh;
}

.public-viewer-appbar {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  z-index: 35;
  min-height: calc(56px + env(safe-area-inset-top, 0px));
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) 44px;
  align-items: end;
  gap: 10px;
  padding:
    max(8px, env(safe-area-inset-top, 0px))
    max(12px, env(safe-area-inset-right, 0px))
    8px
    max(12px, env(safe-area-inset-left, 0px));
  pointer-events: none;
  background: linear-gradient(180deg, rgba(5, 8, 11, 0.88), rgba(5, 8, 11, 0));
}

.public-viewer-appbar > * {
  pointer-events: auto;
}

.viewer-icon-button {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid rgba(96, 115, 130, 0.55);
  border-radius: 12px;
  background: rgba(11, 17, 22, 0.88);
  color: var(--text);
  font-size: 20px;
  box-shadow: var(--shadow-soft);
}

.public-viewer-title {
  min-width: 0;
  display: grid;
  align-self: center;
  gap: 1px;
  text-align: center;
}

.public-viewer-title span,
.public-viewer-title strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.public-viewer-title span {
  color: var(--accent-strong);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.public-viewer-title strong {
  font-size: 14px;
}

.public-viewer-actions {
  position: absolute;
  right: max(12px, env(safe-area-inset-right, 0px));
  bottom: calc(122px + env(safe-area-inset-bottom, 0px));
  left: max(12px, env(safe-area-inset-left, 0px));
  z-index: 34;
  display: grid;
  grid-template-columns: auto minmax(120px, 1fr);
  gap: 8px;
  pointer-events: none;
  transition: opacity 160ms ease;
}

.public-viewer-actions button {
  width: auto;
  pointer-events: auto;
  box-shadow: var(--shadow-soft);
}

.public-viewer-actions .parts-trigger {
  justify-self: end;
  min-width: 132px;
}

.public-parts-sheet {
  inset: auto 0 0;
  width: auto;
  height: calc(112px + env(safe-area-inset-bottom, 0px));
  max-height: none;
  display: block;
  padding:
    26px max(14px, env(safe-area-inset-right, 0px))
    max(12px, env(safe-area-inset-bottom, 0px))
    max(14px, env(safe-area-inset-left, 0px));
  overflow: hidden;
  border: 0;
  border-top: 1px solid rgba(105, 214, 237, 0.26);
  border-radius: 20px 20px 0 0;
  transition: height 220ms ease;
  scroll-snap-type: none;
}

.public-parts-sheet::before {
  display: none;
}

.public-parts-sheet[data-snap="expanded"] {
  height: min(55dvh, 560px);
  overflow-x: hidden;
  overflow-y: auto;
}

.public-viewer-shell:has(.public-parts-sheet[data-snap="expanded"]) .public-viewer-actions {
  opacity: 0;
  pointer-events: none;
}

.parts-sheet-handle {
  position: absolute;
  top: 0;
  left: 50%;
  width: 72px;
  height: 28px;
  min-height: 28px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 0;
  background: transparent;
  transform: translateX(-50%);
  touch-action: none;
}

.parts-sheet-handle span {
  width: 42px;
  height: 4px;
  border-radius: 999px;
  background: #657782;
}

.public-parts-content {
  display: grid;
  gap: 12px;
}

.parts-sheet-summary,
.parts-sheet-header {
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.parts-sheet-summary h2,
.parts-sheet-header h2 {
  margin: 0;
  font-size: 20px;
}

.parts-sheet-summary > span {
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
}

.parts-sheet-header {
  justify-content: flex-start;
}

.part-slot-list,
.part-option-list {
  display: grid;
  gap: 9px;
  padding-bottom: 8px;
}

.part-slot-row,
.part-option {
  width: 100%;
  min-height: 64px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 11px;
  padding: 10px 12px;
  border: 1px solid rgba(96, 115, 130, 0.48);
  border-radius: 12px;
  background: #0c1319;
  color: var(--text);
  text-align: left;
}

.part-slot-row strong,
.part-slot-row small,
.part-option strong,
.part-option small {
  display: block;
}

.part-slot-row small,
.part-option small {
  margin-top: 3px;
  overflow: hidden;
  color: var(--muted);
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.part-slot-number {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(105, 214, 237, 0.4);
  border-radius: 10px;
  color: var(--accent-strong);
  background: rgba(105, 214, 237, 0.08);
}

.part-slot-action {
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 800;
}

.part-option.selected {
  border-color: var(--accent);
  background: rgba(105, 214, 237, 0.09);
}

.remove-part-button {
  width: 100%;
  color: var(--bad);
}

.public-viewer-shell > .viewport-hint {
  right: 12px;
  bottom: calc(180px + env(safe-area-inset-bottom, 0px));
  left: 12px;
  max-width: min(520px, calc(100% - 24px));
  pointer-events: none;
}

.admin-tool-tabs {
  position: sticky;
  top: 0;
  z-index: 4;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 5px;
  margin: 0 -4px 12px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(7, 11, 15, 0.94);
}

.admin-tool-tab {
  min-width: 0;
  min-height: 44px;
  padding: 0 6px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  font-size: 12px;
}

.admin-tool-tab.active {
  border-color: rgba(105, 214, 237, 0.48);
  background: rgba(105, 214, 237, 0.1);
  color: var(--accent-strong);
}

@media (max-width: 767px), (orientation: landscape) and (max-height: 560px) {
  .app-shell:has(.workspace:not(.hidden)) .topbar #primaryNav,
  .app-shell:has(.workspace:not(.hidden)) .topbar .account-chip {
    display: none;
  }

  .app-shell:has(.workspace:not(.hidden)) .topbar .brand {
    flex: 1 1 auto;
  }

  .app-shell:has(.workspace:not(.hidden)) .topbar .account-button {
    flex: 0 0 auto;
  }

  [data-tool-panel] {
    display: none;
  }

  [data-tool-panel].tool-panel-active {
    display: block;
  }
}

@media (orientation: landscape) and (max-height: 560px) {
  .public-parts-sheet,
  .public-parts-sheet[data-snap="expanded"] {
    inset: 0 0 0 auto;
    width: min(340px, 44vw);
    height: 100%;
    padding:
      max(72px, env(safe-area-inset-top, 0px))
      max(12px, env(safe-area-inset-right, 0px))
      max(12px, env(safe-area-inset-bottom, 0px))
      14px;
    overflow-y: auto;
    border: 0;
    border-left: 1px solid rgba(105, 214, 237, 0.26);
    border-radius: 18px 0 0 18px;
  }

  .parts-sheet-handle {
    display: none;
  }

  .public-viewer-actions {
    right: calc(min(340px, 44vw) + 12px);
    bottom: max(12px, env(safe-area-inset-bottom, 0px));
  }

  .public-viewer-shell > .viewport-hint {
    right: calc(min(340px, 44vw) + 12px);
    bottom: 68px;
  }
}

@media (min-width: 768px) and (min-height: 561px) {
  .admin-tool-tabs {
    display: none;
  }

  [data-tool-panel] {
    display: block !important;
  }
}

@media (min-width: 1024px) and (min-height: 561px) {
  .public-parts-sheet,
  .public-parts-sheet[data-snap="collapsed"],
  .public-parts-sheet[data-snap="expanded"] {
    inset: 12px 12px 12px auto;
    width: clamp(300px, 27vw, 380px);
    height: auto;
    padding: 18px 14px;
    overflow-y: auto;
    border: 1px solid rgba(105, 214, 237, 0.24);
    border-radius: 18px;
  }

  .parts-sheet-handle,
  .parts-trigger {
    display: none;
  }

  .public-viewer-actions {
    right: calc(clamp(300px, 27vw, 380px) + 26px);
    bottom: 14px;
    left: 14px;
    display: block;
  }

  .public-viewer-shell:has(.public-parts-sheet[data-snap="expanded"]) .public-viewer-actions {
    opacity: 1;
    pointer-events: auto;
  }

  .public-viewer-shell > .viewport-hint {
    right: calc(clamp(300px, 27vw, 380px) + 26px);
    bottom: 72px;
  }
}