/* ============================================
   CANVAS DEMO — Interactive tabbed workspace
   ============================================ */

.demo {
  position: relative;
  margin-top: var(--sp-2xl);
}

.demo__header {
  text-align: center;
  margin-bottom: var(--sp-2xl);
}

.demo__header .act__label {
  display: block;
  margin-bottom: var(--sp-sm);
}

.demo__header .act__title {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
}

.demo__subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-top: var(--sp-sm);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

/* ---- Tab Bar ---- */
.demo__tabs {
  display: flex;
  justify-content: center;
  gap: var(--sp-xs);
  margin-bottom: var(--sp-lg);
}

.demo__tab {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  padding: var(--sp-sm) var(--sp-lg);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.3s var(--ease-out);
  outline: none;
}

.demo__tab:hover {
  color: var(--text-secondary);
  border-color: var(--border);
}

.demo__tab.is-active {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(200, 160, 100, 0.08);
}

html[data-theme="light"] .demo__tab.is-active {
  background: rgba(160, 120, 48, 0.08);
}

/* ---- Viewport ---- */
.demo__viewport {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  background: var(--surface);
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
}

.demo__viewport:active {
  cursor: grabbing;
}

.demo__viewport.is-dragging-asset {
  cursor: default;
}

/* ---- Canvas Surface ---- */
.demo__surface {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transform-origin: 0 0;
  transition: opacity 0.35s var(--ease-out);
}

.demo__surface.is-fading {
  opacity: 0;
}

/* ---- Dot Grid Background ---- */
.demo__grid {
  position: absolute;
  inset: -200%;
  width: 500%;
  height: 500%;
  --grid-color: rgba(255, 255, 255, 0.035);
  background-image:
    radial-gradient(circle, var(--grid-color) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

html[data-theme="light"] .demo__grid {
  --grid-color: rgba(0, 0, 0, 0.04);
}

/* ---- Connection Lines ---- */
.demo__connections {
  position: absolute;
  inset: -5000px;
  width: 10000px;
  height: 10000px;
  pointer-events: none;
  z-index: 1;
}

.demo__connection-line {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.5;
  stroke-dasharray: 6 4;
  opacity: 0;
  transition: opacity 0.3s var(--ease-out);
}

.demo__connection-line.is-visible {
  opacity: 0.5;
}

/* ---- Asset Cards ---- */
.demo__asset {
  position: absolute;
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0;
  overflow: hidden;
  cursor: grab;
  transition: transform 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out), border-color 0.2s var(--ease-out);
  z-index: 2;
  display: flex;
  flex-direction: column;
}

.demo__asset:hover {
  transform: scale(1.02);
  border-color: var(--border);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.demo__asset:active,
.demo__asset.is-dragging {
  transform: scale(1.04);
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
  cursor: grabbing;
  z-index: 10;
}

.demo__asset.is-selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent), 0 4px 20px rgba(200, 160, 100, 0.2);
}

html[data-theme="light"] .demo__asset.is-selected {
  box-shadow: 0 0 0 2px var(--accent), 0 4px 20px rgba(160, 120, 48, 0.15);
}

.demo__asset.is-connected {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(200, 160, 100, 0.3);
  opacity: 1;
}

.demo__asset.is-dimmed {
  opacity: 0.3;
  transition: opacity 0.3s var(--ease-out), transform 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out), border-color 0.2s var(--ease-out);
}

/* Accent stripe at top */
.demo__asset-stripe {
  height: 3px;
  flex-shrink: 0;
}

/* Visual area — procedural shapes */
.demo__asset-visual {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px 8px 2px;
  min-height: 0;
  overflow: hidden;
}

/* Label */
.demo__asset-label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  padding: 2px 8px 5px;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---- Procedural Visual Styles ---- */

/* 3 thumbnail frames in a row (Storyboard) */
.visual--frames {
  display: flex;
  gap: 3px;
  width: 100%;
}
.visual--frames span {
  flex: 1;
  aspect-ratio: 16/9;
  background: var(--border-subtle);
  border-radius: 2px;
  border: 1px solid var(--border-subtle);
}

/* Text block (Script, Campaign Brief, World Lore) */
.visual--text-block {
  display: flex;
  flex-direction: column;
  gap: 3px;
  width: 100%;
  padding: 0 2px;
}
.visual--text-block span {
  height: 3px;
  background: var(--text-muted);
  border-radius: 1px;
  opacity: 0.3;
}
.visual--text-block span:nth-child(odd) { width: 90%; }
.visual--text-block span:nth-child(even) { width: 65%; }
.visual--text-block span:last-child { width: 40%; }

/* Silhouette (Character Sheet, Character Sprite) */
.visual--silhouette {
  width: 24px;
  height: 36px;
  background: var(--text-muted);
  opacity: 0.25;
  border-radius: 12px 12px 6px 6px;
}

/* Color swatches row */
.visual--swatches {
  display: flex;
  gap: 3px;
}
.visual--swatches span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

/* Waveform bars */
.visual--waveform {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 28px;
}
.visual--waveform span {
  width: 4px;
  border-radius: 1px;
  background: currentColor;
  opacity: 0.5;
}

/* Table rows (Shot List, Playtest Notes) */
.visual--table {
  display: flex;
  flex-direction: column;
  gap: 2px;
  width: 100%;
}
.visual--table span {
  height: 4px;
  background: var(--border-subtle);
  border-radius: 1px;
}

/* Sticky note */
.visual--sticky {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 2px;
}
.visual--sticky span {
  height: 2px;
  border-radius: 1px;
  opacity: 0.4;
}

/* 2x2 collage grid */
.visual--collage {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  width: 100%;
  aspect-ratio: 1;
}
.visual--collage span {
  border-radius: 2px;
}

/* Horizontal segmented bar (Timeline) */
.visual--timeline {
  display: flex;
  gap: 2px;
  width: 100%;
  height: 10px;
}
.visual--timeline span {
  flex: 1;
  border-radius: 2px;
}

/* Lens / camera icon */
.visual--lens {
  width: 28px;
  height: 28px;
  border: 2px solid var(--text-muted);
  border-radius: 50%;
  opacity: 0.3;
  position: relative;
}
.visual--lens::after {
  content: '';
  position: absolute;
  inset: 4px;
  border: 1px solid var(--text-muted);
  border-radius: 50%;
}

/* Grid cells (Level Map) */
.visual--grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  width: 100%;
}
.visual--grid span {
  aspect-ratio: 1;
  border-radius: 2px;
}

/* Pixel art figure */
.visual--pixel {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  width: 30px;
}
.visual--pixel span {
  aspect-ratio: 1;
  border-radius: 1px;
}

/* Wireframe (UI Mockup, Ad Layout) */
.visual--wireframe {
  width: 100%;
  height: 100%;
  border: 1px solid var(--border-subtle);
  border-radius: 2px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 3px;
}
.visual--wireframe span {
  background: var(--border-subtle);
  border-radius: 1px;
}
.visual--wireframe span:first-child {
  height: 4px;
}
.visual--wireframe span:nth-child(2) {
  flex: 1;
}
.visual--wireframe span:last-child {
  height: 6px;
}

/* Flowchart nodes */
.visual--flowchart {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
}
.visual--flowchart span {
  width: 32px;
  height: 8px;
  border-radius: 4px;
  opacity: 0.6;
}
.visual--flowchart .flow-line {
  width: 1px;
  height: 4px;
  background: var(--text-muted);
  opacity: 0.3;
}

/* Item grid (Inventory) */
.visual--items {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  width: 100%;
}
.visual--items span {
  aspect-ratio: 1;
  border-radius: 3px;
  border: 1px solid var(--border-subtle);
}

/* Dialogue tree (branching) */
.visual--branches {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  width: 100%;
}
.visual--branches .branch-row {
  display: flex;
  gap: 3px;
  justify-content: center;
}
.visual--branches span {
  height: 5px;
  border-radius: 2px;
}

/* Gradient swatch */
.visual--gradient {
  width: 100%;
  height: 100%;
  border-radius: 3px;
}

/* Font scale */
.visual--font-scale {
  display: flex;
  flex-direction: column;
  gap: 1px;
  align-items: flex-start;
  width: 100%;
}
.visual--font-scale span {
  background: var(--text-muted);
  border-radius: 1px;
  opacity: 0.35;
}

/* Logo variations */
.visual--logos {
  display: flex;
  gap: 6px;
  align-items: center;
}
.visual--logos span {
  opacity: 0.4;
}

/* Mini month grid (Calendar) */
.visual--calendar {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1px;
  width: 100%;
}
.visual--calendar span {
  aspect-ratio: 1;
  border-radius: 1px;
  background: var(--border-subtle);
}
.visual--calendar span.cal-highlight {
  background: currentColor;
  opacity: 0.4;
}

/* Mini bar chart */
.visual--bars {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 28px;
  width: 100%;
}
.visual--bars span {
  flex: 1;
  border-radius: 1px 1px 0 0;
}

/* Phone frame cards (Social Posts) */
.visual--phones {
  display: flex;
  gap: 4px;
}
.visual--phones span {
  width: 22px;
  height: 36px;
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
}

/* ---- Hint ---- */
.demo__hint {
  text-align: center;
  margin-top: var(--sp-md);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  opacity: 0.6;
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .demo__viewport {
    aspect-ratio: 4 / 3;
  }

  .demo__asset {
    transform: scale(0.85);
  }

  .demo__tab {
    padding: var(--sp-sm) var(--sp-md);
    font-size: 0.6875rem;
  }
}

@media (max-width: 600px) {
  .demo__viewport {
    aspect-ratio: 3 / 3;
    border-radius: var(--radius-md);
  }

  .demo__asset {
    transform: scale(0.7);
  }
}