/* Motion diagrams for the Four Drawers essay. Scoped to .drawer-fig.
   Colors come from the site theme so light and dark stay in sync. */

.drawer-fig {
  margin: 1.75rem 0 2rem;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-elevated);
  overflow: hidden;
}

.drawer-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--border);
}

.drawer-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-light);
}

.drawer-heading {
  margin: 0.2rem 0 0;
  font-size: 1.05rem;
  font-weight: 650;
  line-height: 1.35;
  color: var(--text);
}

.drawer-stage {
  padding: 1rem;
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 22px 22px;
}

.drawer-fig p {
  margin: 0;
}

.drawer-note {
  min-height: 3.2rem;
  margin-bottom: 0.85rem;
  color: var(--text);
  font-size: 1rem;
  line-height: 1.55;
}

.drawer-caption {
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.55;
}

button.drawer-node {
  width: 100%;
  font: inherit;
  text-align: left;
  cursor: pointer;
  color: var(--text-secondary);
}

.drawer-card .drawer-status {
  opacity: 0;
}

.drawer-card.is-on .drawer-status {
  opacity: 1;
  color: var(--accent-light);
}

.drawer-card p,
.drawer-col p,
.drawer-node p,
.drawer-return p {
  margin-top: 0.35rem;
  line-height: 1.45;
}

.drawer-controls,
.drawer-asks,
.drawer-steps {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.85rem;
}

.drawer-btn {
  min-height: 44px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-card);
  color: var(--text-secondary);
  padding: 0.45rem 0.8rem;
  font: 500 0.9rem/1.3 var(--font-sans);
  text-align: left;
  cursor: pointer;
  transition: border-color 180ms ease, background-color 180ms ease, color 180ms ease, transform 150ms ease;
}

.drawer-btn:active {
  transform: scale(0.98);
}

.drawer-btn.is-on,
.drawer-card.is-on,
.drawer-node.is-on,
.drawer-return.is-on {
  border-color: var(--accent);
  background: var(--accent-dim);
  color: var(--text);
  box-shadow: 0 0 0 1px var(--accent-glow);
}

.drawer-btn-icon {
  font: 600 0.85rem/1 var(--font-mono);
}

.drawer-grid {
  display: grid;
  gap: 0.65rem;
}

@media (min-width: 720px) {
  .drawer-grid.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .drawer-grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.drawer-card,
.drawer-node,
.drawer-return,
.drawer-col {
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-card);
  padding: 0.75rem 0.8rem;
  color: var(--text-secondary);
  transition: border-color 200ms ease, background-color 200ms ease, box-shadow 200ms ease;
}

.drawer-card strong,
.drawer-node strong,
.drawer-col strong,
.drawer-return strong {
  display: block;
  color: var(--text);
  font-weight: 650;
}

.drawer-path {
  display: block;
  margin-top: 0.2rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.45;
  color: var(--accent-light);
  overflow-wrap: anywhere;
}

.drawer-status {
  margin: 0.45rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.drawer-split {
  display: grid;
  gap: 0.65rem;
}

@media (min-width: 720px) {
  .drawer-split { grid-template-columns: 1fr 1fr; }
}

.drawer-col.is-choice {
  border-color: var(--accent);
  background: var(--accent-dim);
}

.drawer-k {
  margin: 0 0 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.drawer-col.is-choice .drawer-k { color: var(--accent-light); }

.drawer-panel.is-on .drawer-copy {
  animation: drawer-in 280ms ease-out;
}

.drawer-flowrow {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

@media (min-width: 980px) {
  .drawer-flowrow {
    flex-direction: row;
    align-items: stretch;
  }
  .drawer-flowrow .drawer-node { flex: 1; }
}

.drawer-line {
  align-self: center;
  width: 2px;
  height: 18px;
  border-radius: 99px;
  background: var(--border);
  position: relative;
  overflow: hidden;
}

@media (min-width: 980px) {
  .drawer-line { width: 22px; height: 2px; }
}

.drawer-line.is-on {
  background: var(--accent-glow);
}

.drawer-line.is-on::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, var(--accent-light), transparent);
  animation: drawer-flow 1.3s linear infinite;
}

.drawer-return { margin-top: 0.75rem; }

.drawer-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.85rem;
}

.drawer-actions .drawer-btn.is-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #041016;
  font-weight: 700;
}

[data-theme="light"] .drawer-actions .drawer-btn.is-primary {
  color: #f8fafc;
}

@keyframes drawer-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

@keyframes drawer-flow {
  from { transform: translateX(-100%); }
  to { transform: translateX(100%); }
}

@media (prefers-reduced-motion: reduce) {
  .drawer-panel.is-on .drawer-copy,
  .drawer-line.is-on::after {
    animation: none;
  }
}