/* School Radio Widget — Apple Design
   Floating music player, self-contained namespace.
   Sits on every School Apps page. */

.school-radio {
  --radio-ink: #1d1d1f;
  --radio-soft: #86868b;
  --radio-surface: #ffffff;
  --radio-line: rgba(0, 0, 0, 0.08);
  --radio-accent: #1a7a8e;
  --radio-accent-bright: #2ba3b8;
  --radio-warn: #e8a838;
  --radio-warn-ink: #7a4d0a;
  --radio-warn-surface: rgba(232, 168, 56, 0.1);
  --radio-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
  position: fixed;
  z-index: 1000;
  width: min(340px, calc(100vw - 24px));
  color: var(--radio-ink);
  font-family: 'Inter', 'Noto Sans Thai', system-ui, sans-serif;
  transition: width 0.2s ease, transform 0.15s ease, opacity 0.15s ease;
}

html[data-theme="dark"] .school-radio {
  --radio-ink: #f5f5f7;
  --radio-soft: #a1a1a6;
  --radio-surface: #2c2c2e;
  --radio-line: rgba(255, 255, 255, 0.08);
  --radio-accent: #64d8e9;
  --radio-accent-bright: #8eeafa;
  --radio-warn: #f2c766;
  --radio-warn-ink: #f2c766;
  --radio-warn-surface: rgba(242, 199, 102, 0.12);
  --radio-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}
@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) .school-radio {
    --radio-ink: #f5f5f7;
    --radio-soft: #a1a1a6;
    --radio-surface: #2c2c2e;
    --radio-line: rgba(255, 255, 255, 0.08);
    --radio-accent: #64d8e9;
    --radio-accent-bright: #8eeafa;
    --radio-warn: #f2c766;
    --radio-warn-ink: #f2c766;
    --radio-warn-surface: rgba(242, 199, 102, 0.12);
    --radio-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  }
}

html[data-theme="light"] .school-radio { color-scheme: light; }
html[data-theme="dark"] .school-radio { color-scheme: dark; }

/* ── Surface ── */
.school-radio__surface {
  overflow: hidden;
  border: 1px solid var(--radio-line);
  border-radius: 16px;
  background: var(--radio-surface);
  box-shadow: var(--radio-shadow);
}

/* ── Drag Bar ── */
.school-radio__dragbar {
  display: flex;
  align-items: center;
  min-height: 32px;
  padding: 8px 12px 0;
  cursor: grab;
  user-select: none;
  touch-action: none;
}
.school-radio__dragbar:active { cursor: grabbing; }
.school-radio__eyebrow {
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--radio-soft);
  text-transform: uppercase;
}
.school-radio__lock-badge {
  display: none;
  margin-left: 8px;
  padding: 1px 6px;
  border-radius: 99px;
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--radio-warn-ink);
  background: var(--radio-warn-surface);
}
.school-radio.is-locked .school-radio__lock-badge { display: inline-block; }
.school-radio__drag-hint {
  width: 24px;
  height: 3px;
  margin-left: auto;
  border-radius: 99px;
  background: var(--radio-line);
}

/* ── Body ── */
.school-radio__body { padding: 6px 14px 14px; }

/* ── Now Playing ── */
.school-radio__now { display: flex; gap: 10px; align-items: center; min-width: 0; }
.school-radio__cover {
  flex: 0 0 56px;
  width: 56px;
  height: 56px;
  border-radius: 12px;
  object-fit: cover;
  background: var(--radio-accent);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}
.school-radio__track { min-width: 0; flex: 1; }
.school-radio__title, .school-radio__artist {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.school-radio__title { font-size: 14px; font-weight: 700; line-height: 1.25; }
.school-radio__artist { margin-top: 2px; color: var(--radio-soft); font-size: 11px; font-weight: 600; }
.school-radio__live {
  display: flex;
  gap: 2px;
  align-items: end;
  height: 14px;
  margin-top: 5px;
  color: var(--radio-accent);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.06em;
}
.school-radio__bars { display: inline-flex; gap: 2px; align-items: end; height: 11px; }
.school-radio__bars i {
  display: block;
  width: 2px;
  height: 3px;
  border-radius: 3px;
  background: currentColor;
}
.school-radio.is-playing .school-radio__bars i { animation: school-radio-eq 0.8s ease-in-out infinite alternate; }
.school-radio.is-playing .school-radio__bars i:nth-child(2) { animation-delay: -0.38s; }
.school-radio.is-playing .school-radio__bars i:nth-child(3) { animation-delay: -0.15s; }
.school-radio.is-reactive .school-radio__bars i { height: var(--radio-level, 3px); animation: none; transition: height 0.06s linear; }
@keyframes school-radio-eq { to { height: 11px; } }

/* ── Progress ── */
.school-radio__progress-row {
  display: grid;
  grid-template-columns: 30px 1fr 30px;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  font-size: 9px;
  font-variant-numeric: tabular-nums;
  color: var(--radio-soft);
  font-weight: 700;
}
.school-radio input[type="range"] { width: 100%; margin: 0; accent-color: var(--radio-accent); cursor: pointer; }

/* ── Controls ── */
.school-radio__controls { display: flex; align-items: center; justify-content: center; gap: 6px; margin-top: 10px; }
.school-radio__button {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  color: var(--radio-ink);
  background: transparent;
  cursor: pointer;
  font: inherit;
  transition: background 0.12s ease, color 0.12s ease;
}
.school-radio__button:hover { background: rgba(0, 0, 0, 0.06); }
html[data-theme="dark"] .school-radio__button:hover { background: rgba(255, 255, 255, 0.08); }
.school-radio__button:active { transform: scale(0.9); }
.school-radio__button.is-active { color: var(--radio-accent); }
.school-radio__button--primary {
  width: 40px;
  height: 40px;
  color: #fff;
  background: var(--radio-accent);
  box-shadow: 0 2px 8px rgba(26, 122, 142, 0.25);
}
.school-radio__button--primary:hover { filter: brightness(1.05); }
.school-radio__button--small { width: 26px; height: 26px; margin-left: 2px; }
.school-radio__button svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.school-radio__button--primary svg { width: 18px; height: 18px; fill: currentColor; stroke: none; }

/* ── Bottom (volume + collapse) ── */
.school-radio__bottom { display: flex; align-items: center; gap: 6px; margin-top: 10px; }
.school-radio__volume { display: flex; flex: 1; align-items: center; gap: 4px; min-width: 0; }
.school-radio__volume input { min-width: 24px; }

/* ── Empty / Banner ── */
.school-radio__empty {
  margin-top: 10px;
  padding: 8px;
  border-radius: 10px;
  background: var(--radio-accent);
  background: rgba(26, 122, 142, 0.08);
  color: var(--radio-soft);
  font-size: 10px;
  line-height: 1.4;
  font-weight: 600;
}
.school-radio__banner {
  margin-bottom: 8px;
  padding: 8px;
  border-radius: 10px;
  background: var(--radio-warn-surface);
  color: var(--radio-warn-ink);
  font-size: 10px;
  line-height: 1.4;
  font-weight: 700;
}
.school-radio__banner[hidden] { display: none; }

/* ── Disabled state ── */
.school-radio button:disabled, .school-radio input:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  filter: saturate(0.5);
}
.school-radio button:disabled:hover { background: transparent; }
.school-radio__button--primary:disabled, .school-radio__button--primary:disabled:hover {
  background: var(--radio-accent);
  filter: saturate(0.4) brightness(0.9);
}

/* ── Collapsed ── */
.school-radio.is-collapsed { width: min(240px, calc(100vw - 24px)); }
.school-radio.is-collapsed .school-radio__dragbar { min-height: 6px; padding: 4px 8px 0; }
.school-radio.is-collapsed .school-radio__eyebrow { display: none; }
.school-radio.is-collapsed .school-radio__drag-hint { margin: 0 auto; }
.school-radio.is-collapsed .school-radio__body { display: flex; align-items: center; gap: 8px; padding: 6px 8px 8px; cursor: pointer; }
.school-radio.is-collapsed .school-radio__now { flex: 1; gap: 8px; min-width: 0; }
.school-radio.is-collapsed .school-radio__cover { flex-basis: 34px; width: 34px; height: 34px; border-radius: 10px; }
.school-radio.is-collapsed .school-radio__live { display: flex; height: 8px; margin-top: 2px; }
.school-radio.is-collapsed .school-radio__live > span:last-child { display: none; }
.school-radio.is-collapsed .school-radio__bars { height: 8px; }
.school-radio.is-collapsed .school-radio__title { font-size: 11px; }
.school-radio.is-collapsed .school-radio__artist { margin-top: 1px; font-size: 9px; }
.school-radio.is-collapsed .school-radio__progress-row,
.school-radio.is-collapsed .school-radio__bottom,
.school-radio.is-collapsed .school-radio__controls > :not(.school-radio__button--primary) { display: none; }
.school-radio.is-collapsed .school-radio__controls { margin: 0; gap: 0; }
.school-radio.is-collapsed .school-radio__button--primary { width: 34px; height: 34px; }
.school-radio.is-collapsed .school-radio__empty,
.school-radio.is-collapsed .school-radio__banner,
.school-radio.is-collapsed .school-radio__lock-badge { display: none; }

/* ── Focus ── */
.school-radio button:focus-visible, .school-radio input:focus-visible {
  outline: 2px solid var(--radio-accent);
  outline-offset: 2px;
}

/* ── Responsive ── */
@media (max-width: 480px) {
  .school-radio__surface { border-radius: 14px; }
  .school-radio__body { padding: 5px 11px 11px; }
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  .school-radio, .school-radio * { transition: none !important; animation: none !important; }
}