:root {
  --bg-start: #f0f4ff;
  --bg-end: #dbe7d5;
  --panel-bg: rgba(13, 28, 45, 0.88);
  --panel-border: rgba(255, 255, 255, 0.12);
  --panel-soft: rgba(255, 255, 255, 0.06);
  --accent: #ffb703;
  --accent-strong: #fb8500;
  --text-main: #f7fbff;
  --text-soft: rgba(247, 251, 255, 0.74);
  --dark-text: #132238;
  --shadow: 0 24px 80px rgba(8, 24, 48, 0.18);
  --radius-xl: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  width: 100%;
  overflow-x: hidden;
}

body {
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--dark-text);
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.85), transparent 34%),
    linear-gradient(135deg, var(--bg-start), var(--bg-end));
}

code,
kbd {
  font-family: "Cascadia Code", "Consolas", monospace;
}

.app-shell {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  min-height: 100vh;
  width: 100%;
  max-width: 100%;
  gap: 18px;
  padding: 18px;
  overflow-x: clip;
}

.app-shell.app-mode-library {
  grid-template-columns: 1fr;
  max-width: 1120px;
  margin: 0 auto;
}

.app-shell.app-mode-library .viewer-panel {
  display: none;
}

.app-shell.app-mode-viewer {
  grid-template-columns: 1fr;
}

.app-shell.app-mode-viewer .control-panel {
  display: none;
}

.control-panel,
.viewer-panel {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.control-panel {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 24px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), transparent),
    var(--panel-bg);
  color: var(--text-main);
}

.app-mode-library .control-panel {
  max-width: none;
}

.brand-block h1 {
  margin: 8px 0 12px;
  font-size: clamp(1.8rem, 3vw, 2.3rem);
  line-height: 1.05;
}

.project-caption {
  margin: -4px 0 10px;
  font-size: 0.84rem;
  color: var(--text-soft);
  letter-spacing: 0.03em;
}

.project-updated {
  margin: -4px 0 12px;
  font-size: 0.8rem;
  color: var(--text-soft);
}

.eyebrow,
.section-title {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.76rem;
  color: var(--accent);
}

.panel-text,
.hint-list,
.stats-list {
  color: var(--text-soft);
}

.compact-text {
  margin: 8px 0 0;
  font-size: 0.9rem;
  line-height: 1.4;
}

.panel-section {
  padding: 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--panel-border);
  background: var(--panel-soft);
  backdrop-filter: blur(16px);
}

#modelInput {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.upload-button,
.secondary-button {
  width: 100%;
  border: none;
  border-radius: 999px;
  padding: 14px 18px;
  font-size: 0.98rem;
  font-weight: 700;
  cursor: pointer;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    opacity 160ms ease;
}

.upload-button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #08131f;
  box-shadow: 0 16px 30px rgba(251, 133, 0, 0.28);
}

.secondary-button {
  margin-top: 12px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  border: 1px solid var(--panel-border);
}

#resetViewButton {
  display: none;
}

.upload-button:hover,
.secondary-button:hover {
  transform: translateY(-1px);
}

.toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
  color: var(--text-main);
}

.toggle input {
  accent-color: var(--accent);
}

.library-block + .library-block {
  margin-top: 14px;
}

.library-title {
  margin: 0 0 10px;
  color: var(--text-main);
  font-size: 0.9rem;
  font-weight: 700;
}

.asset-list {
  display: grid;
  gap: 10px;
}

.app-mode-library .asset-list {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.asset-card {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  text-align: left;
  cursor: pointer;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease;
}

.asset-card-preview {
  margin: -4px -6px 10px;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.18), transparent 38%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(19, 34, 56, 0.22));
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.asset-card-image,
.asset-card-placeholder {
  width: 100%;
  height: 100%;
  display: block;
}

.asset-card-image {
  object-fit: cover;
}

.asset-card-placeholder {
  display: grid;
  place-items: center;
  color: rgba(247, 251, 255, 0.7);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.asset-card:hover {
  transform: translateY(-1px);
  border-color: rgba(255, 183, 3, 0.45);
}

.asset-card.active {
  border-color: rgba(255, 183, 3, 0.88);
  background: rgba(255, 183, 3, 0.14);
}

.asset-card-title {
  display: block;
  font-size: 0.95rem;
  font-weight: 700;
}

.asset-card-meta {
  display: block;
  margin-top: 6px;
  color: var(--text-soft);
  font-size: 0.82rem;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.asset-card-empty {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px dashed rgba(255, 255, 255, 0.16);
  color: var(--text-soft);
  font-size: 0.88rem;
}

.stats-list {
  margin: 14px 0 0;
  display: grid;
  gap: 12px;
}

.stats-list div {
  display: grid;
  grid-template-columns: 86px 1fr;
  gap: 12px;
}

.stats-list dt {
  color: var(--text-main);
  font-weight: 700;
}

.stats-list dd {
  margin: 0;
}

.viewer-panel {
  display: grid;
  grid-template-rows: auto auto 1fr;
  width: 100%;
  min-width: 0;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.68);
  border: 1px solid rgba(255, 255, 255, 0.6);
}

.viewer-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  padding: 18px 22px;
  background: rgba(255, 255, 255, 0.72);
  border-bottom: 1px solid rgba(19, 34, 56, 0.08);
}

.viewer-toolbar p {
  margin: 0;
}

.viewer-toolbar-main {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.viewer-toolbar-text {
  display: grid;
  gap: 4px;
}

.viewer-toolbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

#viewerTitle {
  font-size: 1rem;
  font-weight: 700;
  color: var(--dark-text);
}

#statusText {
  color: rgba(19, 34, 56, 0.72);
  font-size: 0.9rem;
}

.toolbar-button {
  border: none;
  border-radius: 999px;
  padding: 11px 16px;
  background: rgba(19, 34, 56, 0.1);
  color: var(--dark-text);
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
}

.toolbar-button:disabled {
  opacity: 0.45;
  cursor: default;
}

.toolbar-button.accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #08131f;
}

.scene-quick-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 12px 18px 14px;
  background: rgba(255, 255, 255, 0.78);
  border-bottom: 1px solid rgba(19, 34, 56, 0.08);
  overscroll-behavior-x: contain;
}

.quick-action-button {
  border: none;
  border-radius: 999px;
  padding: 10px 14px;
  background: rgba(19, 34, 56, 0.12);
  color: var(--dark-text);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
}

.quick-action-button:disabled {
  opacity: 0.48;
  cursor: default;
}

.quick-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 999px;
  background: rgba(19, 34, 56, 0.08);
  color: var(--dark-text);
  font-size: 0.92rem;
  font-weight: 700;
}

.quick-toggle-wide {
  min-width: max-content;
}

.quick-toggle input {
  margin: 0;
  accent-color: var(--accent-strong);
}

.quick-range {
  display: inline-grid;
  grid-template-columns: auto minmax(140px, 180px) auto;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 999px;
  background: rgba(19, 34, 56, 0.08);
  color: var(--dark-text);
  font-size: 0.82rem;
  font-weight: 700;
}

.quick-range input {
  width: 100%;
  accent-color: var(--accent-strong);
}

.quick-range:has(input:disabled) {
  opacity: 0.48;
}

.viewer-canvas-wrapper {
  position: relative;
  min-height: 520px;
  min-width: 0;
  width: 100%;
  height: calc(100vh - 140px);
  overflow: hidden;
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.38), transparent 24%),
    linear-gradient(180deg, rgba(112, 153, 211, 0.22), rgba(19, 34, 56, 0.08));
}

.viewer-canvas-wrapper.drag-active {
  outline: 3px dashed rgba(251, 133, 0, 0.8);
  outline-offset: -14px;
}

.view-gizmo {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 124px;
  height: 124px;
  border-radius: 26px;
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.92), transparent 56%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(233, 239, 247, 0.74));
  border: 1px solid rgba(136, 153, 176, 0.52);
  box-shadow:
    0 18px 34px rgba(9, 16, 27, 0.14),
    inset 0 1px 0 rgba(255, 255, 255, 0.88);
  pointer-events: none;
}

#sceneCanvas {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
}

.canvas-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  padding: 24px;
}

.overlay-card {
  position: relative;
  max-width: 340px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(10px);
  color: rgba(19, 34, 56, 0.9);
  pointer-events: auto;
}

.overlay-card.is-hidden {
  display: none;
}

.overlay-close-button {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 999px;
  background: rgba(19, 34, 56, 0.08);
  color: rgba(19, 34, 56, 0.76);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  pointer-events: auto;
}

.overlay-title {
  margin: 0 0 8px;
  font-size: 0.92rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #b45309;
}

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

  .viewer-panel {
    order: 1;
  }

  .control-panel {
    order: 2;
  }

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

@media (max-width: 720px) {
  .app-shell {
    padding: 12px;
    gap: 12px;
  }

  .control-panel,
  .viewer-panel {
    border-radius: 22px;
  }

  .app-shell.app-mode-viewer {
    min-height: 100dvh;
    align-items: stretch;
    padding: 0;
    gap: 0;
  }

  .control-panel {
    padding: 18px;
    gap: 12px;
  }

  .brand-block h1 {
    font-size: 1.85rem;
  }

  .brand-block .panel-text {
    margin: 8px 0 0;
    font-size: 0.95rem;
  }

  .panel-section {
    padding: 14px;
  }

  .upload-button,
  .secondary-button {
    padding: 12px 16px;
  }

  .viewer-panel {
    width: 100%;
    max-width: 100%;
    min-height: calc(100dvh - 24px);
    grid-template-rows: auto auto minmax(0, 1fr);
    border-radius: 0;
    border-left: none;
    border-right: none;
  }

  .viewer-canvas-wrapper {
    min-height: 0;
    width: 100%;
    height: auto;
  }

  .view-gizmo {
    top: 10px;
    right: 10px;
    width: 100px;
    height: 100px;
    border-radius: 20px;
  }

  .viewer-toolbar {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    align-items: stretch;
    gap: 10px;
    padding: 12px;
  }

  .viewer-toolbar-main {
    width: 100%;
    align-items: flex-start;
  }

  .viewer-toolbar-text {
    min-width: 0;
  }

  .viewer-toolbar-actions {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }

  .toolbar-button {
    width: auto;
    text-align: center;
    padding: 10px 12px;
  }

  #viewerTitle {
    font-size: 0.98rem;
  }

  #statusText {
    font-size: 0.82rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .scene-quick-controls {
    position: sticky;
    top: 0;
    z-index: 5;
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 8px;
    padding: 10px 12px;
  }

  .scene-quick-controls::-webkit-scrollbar {
    display: none;
  }

  .scene-quick-controls > * {
    flex: 0 0 auto;
  }

  .quick-toggle {
    padding: 8px 10px;
    font-size: 0.84rem;
  }

  .quick-range {
    grid-template-columns: auto minmax(120px, 140px) auto;
    padding: 8px 10px;
    font-size: 0.78rem;
  }

  .quick-action-button {
    padding: 8px 12px;
    font-size: 0.84rem;
  }

  .app-mode-library .asset-list {
    grid-template-columns: 1fr;
  }

  .canvas-overlay {
    padding: 14px;
  }

  .overlay-card {
    max-width: 250px;
    padding: 12px 14px;
  }

  .overlay-title {
    font-size: 0.82rem;
  }

  .overlay-card p:last-child {
    margin: 0;
    font-size: 0.88rem;
    line-height: 1.35;
  }
}