/* Demonstration of Generated Simulations
 *
 * Spacing scale: 8 / 12 / 16 / 24 / 32 px.
 * Type scale:    section title (Bulma is-3) > task title 1.5rem >
 *                body 1rem > meta/labels 0.8rem.
 * Surfaces:      one radius (10px); shadows only on media panels
 *                (video, 3D scene, code), never on controls or thumbnails.
 */

#sim-demos {
  --sim-accent: #297270;
  --sim-text: #363636;
  --sim-text-muted: #6b6b6b;
  --sim-surface: #eef1f1;
  --sim-border: rgba(0, 0, 0, 0.06);
  --sim-radius: 10px;
  --sim-shadow: 0 10px 25px rgba(0, 0, 0, 0.08), 0 4px 10px rgba(0, 0, 0, 0.04);
  --sim-ease: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Header */
.sim-header {
  margin-bottom: 24px;
}

#sim-demos .sim-header .title {
  margin-bottom: 8px;
}

#sim-demos .sim-subtitle {
  margin: 0;
  font-size: 1.125rem;
  color: var(--sim-text-muted);
}

/* Toolbar */
.sim-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.sim-toolbar-label {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sim-text-muted);
}

.sim-toolbar .select select {
  min-width: 240px;
  border-color: #dbdbdb;
  box-shadow: none;
}

/* Rows */
.sim-top {
  margin-bottom: 32px !important;
}

.sim-top > .column,
.sim-bottom > .column {
  padding: 12px;
}

/* Thumbnail grid */
.sim-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  transition: opacity 0.25s var(--sim-ease);
}

.sim-grid.is-leaving {
  opacity: 0;
}

.sim-thumb {
  position: relative;
  aspect-ratio: 1 / 1;
  padding: 0;
  border: 0;
  border-radius: var(--sim-radius);
  overflow: hidden;
  cursor: pointer;
  background: var(--sim-surface);
  box-shadow: 0 0 0 0 transparent;
  transition: box-shadow 0.35s var(--sim-ease);
  animation: sim-thumb-in 0.45s var(--sim-ease) both;
  animation-delay: calc(var(--i, 0) * 40ms);
}

@keyframes sim-thumb-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

.sim-thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--sim-ease);
}

.sim-thumb:hover img {
  transform: scale(1.04);
}

.sim-thumb-label {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  text-align: center;
  color: #fff;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.25;
  background: rgba(0, 0, 0, 0.45);
  opacity: 0;
  transition: opacity 0.45s var(--sim-ease);
}

.sim-thumb:hover .sim-thumb-label,
.sim-thumb:focus-visible .sim-thumb-label {
  opacity: 1;
}

.sim-thumb:focus-visible {
  outline: none;
}

.sim-thumb.active {
  box-shadow: 0 0 0 3px var(--sim-accent);
}

/* Prompt */
.sim-prompt {
  margin-bottom: 16px;
  transition: opacity 0.25s var(--sim-ease);
}

#sim-demos .sim-prompt-category {
  margin: 0 0 4px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sim-accent);
}

#sim-demos .sim-prompt-title {
  margin: 0 0 8px;
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.25;
  color: var(--sim-text);
}

#sim-demos .sim-prompt-text {
  margin: 0;
  font-size: 1rem;
  line-height: 1.55;
  color: #4a4a4a;
  min-height: 4.65em; /* three lines, so the video doesn't jump between prompts */
}

/* Video */
.sim-video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--sim-radius);
  background: var(--sim-surface);
  box-shadow: var(--sim-shadow);
  transition: opacity 0.25s var(--sim-ease);
}

.sim-prompt.is-leaving {
  opacity: 0;
}

.sim-video.is-switching {
  animation: sim-video-switch 0.45s var(--sim-ease);
}

@keyframes sim-video-switch {
  from { opacity: 0.35; }
  to { opacity: 1; }
}

/* Bottom panels */
.sim-panel {
  display: flex;
  flex-direction: column;
  height: 460px;
  border: 1px solid var(--sim-border);
  border-radius: var(--sim-radius);
  overflow: hidden;
  background: #fafafa;
  box-shadow: var(--sim-shadow);
}

.sim-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 40px;
  padding: 0 16px;
  flex: none;
  font-family: "Source Code Pro", monospace;
  font-size: 0.8rem;
  color: var(--sim-text-muted);
  background: #f3f3f3;
  border-bottom: 1px solid var(--sim-border);
}

.sim-panel-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  margin-right: -6px;
  padding: 0;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--sim-text-muted);
  cursor: pointer;
  transition: background-color 0.2s var(--sim-ease), color 0.2s var(--sim-ease);
}

.sim-panel-action:hover {
  background: rgba(0, 0, 0, 0.06);
  color: var(--sim-text);
}

.sim-viewer {
  position: relative;
  flex: 1;
  min-height: 0;
  background: var(--sim-surface);
  cursor: grab;
}

.sim-viewer:active {
  cursor: grabbing;
}

.sim-viewer canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
  touch-action: none;
}

.sim-viewer-status {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--sim-text-muted);
  font-size: 0.9rem;
  pointer-events: none;
}

.sim-viewer-status[hidden] {
  display: none;
}

.sim-viewer-hint {
  position: absolute;
  left: 12px;
  bottom: 12px;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  color: #fff;
  background: rgba(0, 0, 0, 0.45);
  pointer-events: none;
}

.sim-code-body {
  flex: 1;
  min-height: 0;
  margin: 0;
  padding: 16px;
  overflow: auto;
  background: #fafafa;
  font-size: 0.8rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

.sim-code-body code,
.sim-code-body code.hljs {
  padding: 0;
  overflow: visible;
  background: transparent;
  font-family: "Source Code Pro", monospace;
}

.sim-code-body.typing code::after {
  content: "\258B";
  color: var(--sim-accent);
  animation: sim-caret 1s steps(1) infinite;
}

@keyframes sim-caret {
  50% { opacity: 0; }
}

@media (max-width: 768px) {
  .sim-toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }

  .sim-toolbar .select,
  .sim-toolbar .select select {
    width: 100%;
  }

  .sim-top {
    margin-bottom: 16px !important;
  }

  .sim-panel {
    height: 360px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .sim-grid,
  .sim-thumb,
  .sim-thumb img,
  .sim-thumb-label,
  .sim-prompt,
  .sim-video,
  .sim-video.is-switching {
    transition: none;
    animation: none;
  }

  .sim-code-body.typing code::after {
    animation: none;
  }
}