/* ============================================================
   shared/animations.css — keyframes + animation widget styles
   Used by shared/anim.js
   ============================================================ */

/* ---------- keyframes ---------- */
@keyframes anim-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}
@keyframes anim-glow {
  0%, 100% { filter: drop-shadow(0 0 2px currentColor); }
  50% { filter: drop-shadow(0 0 8px currentColor); }
}
@keyframes anim-flow-dash {
  to { stroke-dashoffset: -20; }
}
@keyframes anim-fade-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes anim-draw {
  to { stroke-dashoffset: 0; }
}

/* helper classes (applied by anim.js or directly in markup) */
.anim-pulse { animation: anim-pulse 1.2s ease-in-out infinite; }
.anim-glow { animation: anim-glow 1.2s ease-in-out infinite; }
.anim-flow { stroke-dasharray: 6 6; animation: anim-flow-dash 0.6s linear infinite; }
.anim-fade-in { animation: anim-fade-in 0.35s ease both; }

/* dim/highlight pattern for step players: elements tagged with
   data-step get dimmed until their step activates them */
.anim-stage [data-step] { opacity: 0.22; transition: opacity 0.35s ease; }
.anim-stage [data-step].anim-active { opacity: 1; }
.anim-stage [data-step].anim-spotlight { opacity: 1; }
.anim-stage [data-step].anim-spotlight .anim-glow-target,
.anim-stage [data-step].anim-spotlight { filter: drop-shadow(0 0 6px rgba(var(--accent-rgb), 0.8)); }

/* ---------- step player widget ---------- */
.anim-player {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin: 20px 0;
  overflow: hidden;
}
.anim-player .anim-title {
  color: var(--text2);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: 600;
  padding: 14px 20px 0;
}
.anim-player .anim-stage { padding: 16px 20px; overflow-x: auto; }
.anim-player .anim-caption {
  min-height: 52px;
  padding: 10px 20px;
  font-size: 0.92em;
  color: var(--text);
  border-top: 1px solid var(--border);
  background: var(--bg3);
}
.anim-player .anim-caption strong { color: var(--accent); }
.anim-player .anim-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-top: 1px solid var(--border);
}
.anim-player button {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  cursor: pointer;
  font-size: 12px;
  font-family: inherit;
  padding: 6px 14px;
  transition: all 0.15s;
}
.anim-player button:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.anim-player button:disabled { opacity: 0.35; cursor: default; }
.anim-player button.anim-play {
  background: rgba(var(--accent-rgb), 0.12);
  border-color: rgba(var(--accent-rgb), 0.4);
  color: var(--accent);
}
.anim-player .anim-progress {
  margin-left: auto;
  font-size: 11px;
  color: var(--text2);
  letter-spacing: 1px;
}
.anim-player .anim-dots { display: flex; gap: 5px; margin-left: 8px; }
.anim-player .anim-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--border);
  transition: background 0.2s;
  cursor: pointer;
}
.anim-player .anim-dot.active { background: var(--accent); }

/* ---------- compare strip ---------- */
.anim-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 20px 0;
}
@media (max-width: 640px) { .anim-compare { grid-template-columns: 1fr; } }
.anim-compare .anim-pane {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
}
.anim-compare .anim-pane h5 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
  font-weight: 600;
}
.anim-compare .anim-pane.good h5 { color: var(--green); }
.anim-compare .anim-pane.bad h5 { color: var(--red); }