/* ==========================================================================
   LLaDA-UI project page — player.css
   Frame-sequence players: the hero denoising showcase (recorded model output
   resolving mask tokens) and the three cross-platform agent-trace players.
   ========================================================================== */

/* Denoising showcase layout: observation | recorded output player */
.denoise-grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 20px;
  align-items: start;
}
@media (max-width: 860px) { .denoise-grid { grid-template-columns: 1fr; justify-items: center; } }

.denoise-obs {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  max-width: 300px;
}
.denoise-obs img { border-radius: 10px; border: 1px solid var(--line); }
.denoise-obs .obs-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: center;
  margin-top: 10px;
}

.denoise-main { min-width: 0; display: flex; flex-direction: column; gap: 14px; width: 100%; }

.denoise-task {
  background: var(--tint);
  border: 1px solid rgba(62, 108, 196, 0.22);
  border-radius: 12px;
  padding: 13px 17px;
  font-size: 14.5px;
  color: var(--ink);
}
.denoise-task .task-tag {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--indigo-bright);
  display: block;
  margin-bottom: 3px;
}
.denoise-task code { font-family: var(--font-mono); font-size: 13px; }

/* --------------------------------------------------------------------------
   Generic frame player
   -------------------------------------------------------------------------- */

.player {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 14px 10px;
  width: 100%;
}

.denoise-more { margin-top: 44px; }
.denoise-more h3 { font-family: var(--font-display); font-weight: 600; font-size: 19px; margin: 0 0 8px; }
.denoise-more .lede { color: var(--muted); font-size: 16.5px; margin: 0 0 16px; max-width: 860px; }
.denoise-more .lede code { color: var(--ink); }
.denoise-more .player { max-width: 980px; margin: 0 auto; }

.player .frame-box { position: relative; }
.player .frame-box img {
  width: 100%;
  border-radius: 10px;
  background: var(--tint);
}

.player .controls {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
  padding: 0 2px;
}

.player button {
  flex: none;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--indigo);
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.player button:hover { border-color: var(--indigo-bright); background: var(--tint); }
.player button svg { width: 15px; height: 15px; }

.player .scrub {
  flex: 1 1 auto;
  min-width: 0;
  appearance: none;
  -webkit-appearance: none;
  height: 5px;
  border-radius: 3px;
  background: linear-gradient(to right, var(--indigo-bright) var(--fill, 0%), var(--line) var(--fill, 0%));
  outline-offset: 4px;
  cursor: pointer;
}
.player .scrub::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--indigo);
  border: 2.5px solid #fff;
  box-shadow: 0 1px 5px rgba(20, 29, 49, 0.35);
}
.player .scrub::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--indigo);
  border: 2.5px solid #fff;
  box-shadow: 0 1px 5px rgba(20, 29, 49, 0.35);
}

.player .counter {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  min-width: 62px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.player .player-foot {
  font-size: 12px;
  color: var(--muted);
  margin: 8px 4px 2px;
}

/* --------------------------------------------------------------------------
   Agent trace players
   -------------------------------------------------------------------------- */

.trace-block { margin-top: 8px; }
.trace-intro {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  margin: 26px 0 12px;
}
.trace-intro h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  margin: 0;
}
.trace-intro .trace-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--indigo-bright);
  background: var(--tint);
  border-radius: 6px;
  padding: 3px 9px;
}
.trace-intro p {
  flex-basis: 100%;
  margin: 0;
  font-size: 14.5px;
  color: var(--muted);
  max-width: 820px;
}