:root {
  --bg: #eef8ff;
  --bg-deep: #e4f3ff;
  --surface: rgba(255, 255, 255, 0.86);
  --surface-solid: #ffffff;
  --surface-soft: #f5fbff;
  --surface-muted: #edf7fe;
  --text: #10263a;
  --text-soft: #5d7388;
  --text-faint: #8aa0b3;
  --line: rgba(102, 151, 184, 0.22);
  --line-strong: rgba(87, 144, 181, 0.38);
  --primary: #45a9e9;
  --primary-strong: #258bd0;
  --primary-deep: #1677b8;
  --primary-pale: #dff3ff;
  --cyan: #5ac8e8;
  --success: #28b487;
  --warning: #f4a62a;
  --danger: #e76570;
  --shadow: 0 24px 70px rgba(48, 113, 154, 0.13);
  --shadow-soft: 0 12px 35px rgba(65, 124, 161, 0.1);
  --player-bg: #07131d;
  --radius-xl: 26px;
  --radius-lg: 20px;
  --radius-md: 15px;
  --radius-sm: 11px;
  --transition: 180ms ease;
}

html[data-theme="dark"] {
  --bg: #07141f;
  --bg-deep: #0b1b28;
  --surface: rgba(15, 33, 47, 0.88);
  --surface-solid: #102432;
  --surface-soft: #132b3b;
  --surface-muted: #173346;
  --text: #eaf7ff;
  --text-soft: #a6bdcc;
  --text-faint: #7390a3;
  --line: rgba(132, 185, 216, 0.16);
  --line-strong: rgba(132, 185, 216, 0.3);
  --primary-pale: rgba(69, 169, 233, 0.17);
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.32);
  --shadow-soft: 0 12px 35px rgba(0, 0, 0, 0.24);
}

* { box-sizing: border-box; }

html { min-width: 320px; scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 12% 10%, rgba(92, 195, 239, 0.18), transparent 26rem),
    radial-gradient(circle at 88% 12%, rgba(126, 196, 245, 0.17), transparent 28rem),
    linear-gradient(155deg, var(--bg) 0%, var(--bg-deep) 100%);
  color: var(--text);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  transition: background 240ms ease, color 240ms ease;
}

button, input, select { font: inherit; }
button { color: inherit; }
button, select, input[type="range"], input[type="color"] { cursor: pointer; }
button:focus-visible, input:focus-visible, select:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid rgba(69, 169, 233, 0.35);
  outline-offset: 2px;
}

button:disabled { cursor: not-allowed; opacity: 0.42; }

.ambient {
  position: fixed;
  z-index: -1;
  width: 30rem;
  height: 30rem;
  border-radius: 50%;
  filter: blur(10px);
  opacity: 0.42;
  pointer-events: none;
}
.ambient-one { top: -13rem; left: -10rem; background: rgba(123, 218, 255, 0.36); }
.ambient-two { right: -11rem; bottom: -15rem; background: rgba(89, 164, 231, 0.27); }

.app-shell {
  width: min(1540px, calc(100% - 32px));
  margin: 0 auto;
  padding: 18px 0 24px;
}

.glass-card {
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.55);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}
html[data-theme="dark"] .glass-card { border-color: var(--line); }

.topbar {
  min-height: 74px;
  padding: 12px 18px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}
.brand-mark {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 15px;
  color: #fff;
  background: linear-gradient(145deg, #73cef2, #2b91d5);
  box-shadow: 0 10px 24px rgba(38, 143, 208, 0.28);
}
.brand-mark i { transform: translateX(1px); }
.brand-copy { display: grid; }
.brand-copy strong { font-size: 1.08rem; letter-spacing: -0.02em; }
.brand-copy small { color: var(--text-soft); font-size: 0.76rem; }

.top-actions { display: flex; align-items: center; gap: 9px; }
.network-pill {
  height: 38px;
  padding: 0 12px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border-radius: 999px;
  color: var(--success);
  background: rgba(40, 180, 135, 0.1);
  font-size: 0.8rem;
  font-weight: 700;
}
.network-pill.offline { color: var(--danger); background: rgba(231, 101, 112, 0.1); }

.icon-button, .mini-icon-button {
  border: 1px solid var(--line);
  background: var(--surface-soft);
  display: inline-grid;
  place-items: center;
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
}
.icon-button { width: 40px; height: 40px; border-radius: 13px; }
.mini-icon-button { width: 34px; height: 34px; border-radius: 10px; font-size: 0.85rem; }
.icon-button:hover, .mini-icon-button:hover { transform: translateY(-1px); border-color: var(--line-strong); background: var(--primary-pale); }

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 350px;
  gap: 18px;
  align-items: start;
  margin-top: 18px;
}
.player-column { min-width: 0; display: grid; gap: 18px; }
.player-card { border-radius: var(--radius-xl); overflow: hidden; }

.player-stage {
  position: relative;
  aspect-ratio: 16 / 9;
  min-height: 350px;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(circle at 50% 45%, rgba(59, 151, 201, 0.16), transparent 35%),
    linear-gradient(145deg, #0a1a26 0%, #040b11 100%);
  color: #fff;
  outline: none;
}
.player-stage video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #02070b;
}
.player-stage.fit-cover video { object-fit: cover; }

.stage-placeholder {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: grid;
  place-content: center;
  justify-items: center;
  padding: 30px;
  text-align: center;
  background:
    radial-gradient(circle at 50% 44%, rgba(61, 168, 226, 0.17), transparent 17rem),
    linear-gradient(145deg, rgba(8, 25, 37, 0.94), rgba(3, 11, 17, 0.98));
  transition: opacity 260ms ease, visibility 260ms ease;
}
.stage-placeholder.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.placeholder-orb {
  width: 84px;
  height: 84px;
  margin-bottom: 18px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 50%;
  background: linear-gradient(145deg, rgba(107, 203, 244, 0.28), rgba(34, 128, 187, 0.15));
  box-shadow: inset 0 0 0 12px rgba(255,255,255,0.025), 0 18px 40px rgba(0,0,0,0.28);
  font-size: 1.65rem;
}
.placeholder-orb i { transform: translateX(2px); }
.stage-placeholder h1 { margin: 0; font-size: clamp(1.5rem, 3vw, 2.3rem); letter-spacing: -0.04em; }
.stage-placeholder p { max-width: 570px; margin: 10px 0 22px; color: rgba(226, 243, 252, 0.68); font-size: 0.95rem; }
.placeholder-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }

.drop-overlay {
  position: absolute;
  inset: 0;
  z-index: 30;
  display: grid;
  place-items: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  background: rgba(15, 93, 142, 0.8);
  backdrop-filter: blur(12px);
  transition: opacity var(--transition), visibility var(--transition);
}
.drop-overlay.visible { opacity: 1; visibility: visible; }
.drop-overlay > div {
  min-width: min(420px, 85%);
  padding: 36px;
  border: 2px dashed rgba(255,255,255,0.62);
  border-radius: 24px;
  text-align: center;
}
.drop-overlay i { display: block; margin-bottom: 14px; font-size: 3rem; }
.drop-overlay strong { display: block; font-size: 1.2rem; }
.drop-overlay span { display: block; margin-top: 6px; color: rgba(255,255,255,0.72); }

.loading-indicator {
  position: absolute;
  z-index: 12;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  opacity: 0;
  visibility: hidden;
  color: rgba(255,255,255,0.82);
  font-size: 0.82rem;
}
.loading-indicator.visible { opacity: 1; visibility: visible; }
.spinner {
  width: 42px;
  height: 42px;
  border: 3px solid rgba(255,255,255,0.18);
  border-top-color: #73d2fa;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.center-play {
  position: absolute;
  z-index: 11;
  left: 50%;
  top: 50%;
  width: 72px;
  height: 72px;
  transform: translate(-50%, -50%) scale(0.92);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
  color: #fff;
  background: rgba(27, 138, 203, 0.72);
  box-shadow: 0 16px 50px rgba(0,0,0,0.35);
  backdrop-filter: blur(14px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), transform var(--transition), background var(--transition);
}
.center-play.visible { opacity: 1; visibility: visible; transform: translate(-50%, -50%) scale(1); }
.center-play:hover { background: rgba(37, 151, 215, 0.92); transform: translate(-50%, -50%) scale(1.06); }
.center-play i { transform: translateX(2px); font-size: 1.35rem; }

.subtitle-layer {
  position: absolute;
  z-index: 9;
  left: 7%;
  right: 7%;
  bottom: 112px;
  display: none;
  justify-content: center;
  pointer-events: none;
  text-align: center;
  white-space: pre-line;
  line-height: 1.45;
  text-shadow: 0 2px 5px rgba(0,0,0,0.72);
}
.subtitle-layer.visible { display: flex; }
.subtitle-layer span {
  max-width: 100%;
  padding: 0.22em 0.55em;
  border-radius: 0.35em;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.gesture-hint {
  position: absolute;
  z-index: 20;
  left: 50%;
  top: 42%;
  transform: translate(-50%, -50%) scale(0.92);
  padding: 10px 14px;
  border-radius: 12px;
  color: #fff;
  background: rgba(5, 14, 21, 0.78);
  backdrop-filter: blur(10px);
  opacity: 0;
  visibility: hidden;
  transition: 160ms ease;
}
.gesture-hint.visible { opacity: 1; visibility: visible; transform: translate(-50%, -50%) scale(1); }

.player-chrome {
  position: absolute;
  z-index: 10;
  inset: auto 0 0;
  padding: 74px 18px 14px;
  background: linear-gradient(transparent, rgba(0,0,0,0.78));
  transition: opacity 220ms ease, transform 220ms ease;
}
.player-stage.no-media .player-chrome { display: none; }
.player-stage.chrome-hidden .player-chrome { opacity: 0; transform: translateY(10px); pointer-events: none; }
.player-stage.chrome-hidden { cursor: none; }
.media-summary { display: flex; align-items: end; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.media-text { min-width: 0; display: grid; }
.media-text .eyebrow { color: #82cff3; font-size: 0.72rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; }
.media-text strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 0.96rem; }
.stage-badges { display: flex; gap: 6px; }
.stage-badge { padding: 3px 8px; border: 1px solid rgba(255,255,255,0.2); border-radius: 7px; color: rgba(255,255,255,0.82); background: rgba(0,0,0,0.28); font-size: 0.7rem; font-weight: 700; }

.timeline-wrap { position: relative; height: 18px; display: flex; align-items: center; }
.timeline, .volume-slider, .subtitle-settings input[type="range"] {
  appearance: none;
  -webkit-appearance: none;
  height: 4px;
  border-radius: 999px;
  border: 0;
  outline: none;
}
.timeline { width: 100%; background: linear-gradient(to right, #62c8f2 0 var(--played, 0%), rgba(255,255,255,0.33) var(--played, 0%) var(--buffered, 0%), rgba(255,255,255,0.16) var(--buffered, 0%) 100%); }
.timeline::-webkit-slider-thumb, .volume-slider::-webkit-slider-thumb, .subtitle-settings input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid #fff;
  background: var(--primary);
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
  transition: transform var(--transition);
}
.timeline::-moz-range-thumb, .volume-slider::-moz-range-thumb, .subtitle-settings input[type="range"]::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid #fff;
  background: var(--primary);
}
.timeline:hover::-webkit-slider-thumb, .volume-slider:hover::-webkit-slider-thumb { transform: scale(1.18); }
.timeline-tooltip {
  position: absolute;
  z-index: 2;
  bottom: 20px;
  transform: translateX(-50%);
  padding: 5px 8px;
  border-radius: 7px;
  background: rgba(2, 9, 14, 0.9);
  color: #fff;
  font-size: 0.7rem;
  opacity: 0;
  pointer-events: none;
}
.timeline-wrap:hover .timeline-tooltip { opacity: 1; }

.control-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.control-group { display: flex; align-items: center; gap: 4px; min-width: 0; }
.control-button, .text-control {
  height: 36px;
  border: 0;
  border-radius: 10px;
  color: rgba(255,255,255,0.88);
  background: transparent;
  transition: background var(--transition), color var(--transition), transform var(--transition);
}
.control-button { position: relative; width: 36px; display: grid; place-items: center; }
.control-button small { position: absolute; font-size: 0.48rem; font-weight: 900; }
.control-button:hover, .text-control:hover { color: #fff; background: rgba(255,255,255,0.12); transform: translateY(-1px); }
.control-button.prominent { background: rgba(69, 169, 233, 0.82); }
.control-button.prominent:hover { background: var(--primary); }
.control-button[aria-pressed="true"], .text-control[aria-pressed="true"] { color: #7dd6ff; background: rgba(69,169,233,0.2); }
.text-control { padding: 0 9px; display: inline-flex; align-items: center; gap: 6px; font-size: 0.75rem; }
.volume-control { display: flex; align-items: center; }
.volume-slider { width: 76px; background: linear-gradient(to right, #68cbf2 0 var(--volume, 85%), rgba(255,255,255,0.2) var(--volume, 85%) 100%); }
.time-readout { margin-left: 5px; color: rgba(255,255,255,0.72); font-variant-numeric: tabular-nums; font-size: 0.72rem; white-space: nowrap; }
.time-separator { margin: 0 4px; opacity: 0.48; }
.select-control {
  height: 34px;
  padding: 0 8px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 9px;
  color: rgba(255,255,255,0.8);
  background: transparent;
}
.select-control:hover { background: rgba(255,255,255,0.1); }
.select-control i { font-size: 0.75rem; }
.select-control select {
  max-width: 75px;
  border: 0;
  outline: 0;
  color: inherit;
  background: transparent;
  font-size: 0.74rem;
}
.select-control select option { color: #183044; background: #fff; }
html[data-theme="dark"] .select-control select option { color: #eaf7ff; background: #102432; }

.source-panel { padding: 18px; background: linear-gradient(180deg, var(--surface-solid), var(--surface-soft)); }
.url-entry { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; gap: 10px; }
.input-shell {
  height: 46px;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-soft);
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}
.input-shell:focus-within { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(69,169,233,0.12); background: var(--surface-solid); }
.input-shell > i { color: var(--primary-strong); }
.input-shell input { min-width: 0; flex: 1; border: 0; outline: 0; color: var(--text); background: transparent; }
.input-shell input::placeholder { color: var(--text-faint); }
.input-clear { width: 28px; height: 28px; border: 0; border-radius: 8px; color: var(--text-soft); background: transparent; }
.input-clear:hover { background: var(--primary-pale); color: var(--primary-strong); }

.button {
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid transparent;
  border-radius: 13px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 750;
  font-size: 0.86rem;
  white-space: nowrap;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
}
.button:hover { transform: translateY(-1px); }
.button.primary { color: #fff; background: linear-gradient(135deg, #52b6ed, #288dce); box-shadow: 0 10px 24px rgba(37,139,208,0.22); }
.button.primary:hover { box-shadow: 0 13px 30px rgba(37,139,208,0.32); }
.button.secondary { color: var(--primary-deep); border-color: rgba(69,169,233,0.28); background: var(--primary-pale); }
.button.secondary:hover { border-color: var(--primary); }
.button.ghost-on-dark { color: #fff; border-color: rgba(255,255,255,0.2); background: rgba(255,255,255,0.07); }
.button.ghost-on-dark:hover { background: rgba(255,255,255,0.13); }

.quick-actions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 12px; }
.action-tile {
  min-width: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  text-align: left;
  background: var(--surface-solid);
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
}
.action-tile:hover { transform: translateY(-1px); border-color: var(--line-strong); background: var(--primary-pale); }
.tile-icon { flex: 0 0 auto; width: 38px; height: 38px; display: grid; place-items: center; border-radius: 11px; color: var(--primary-strong); background: var(--primary-pale); }
.action-tile > span:last-child { min-width: 0; display: grid; }
.action-tile strong, .action-tile small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.action-tile strong { font-size: 0.82rem; }
.action-tile small { color: var(--text-soft); font-size: 0.69rem; }

.details-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.info-card { min-width: 0; padding: 18px; border-radius: var(--radius-lg); }
.card-heading, .dialog-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.card-heading > div:first-child, .dialog-heading > div:first-child { min-width: 0; display: flex; align-items: center; gap: 10px; }
.heading-icon { flex: 0 0 auto; width: 37px; height: 37px; display: grid; place-items: center; border-radius: 11px; color: var(--primary-deep); background: var(--primary-pale); }
.card-heading > div:first-child > span:last-child, .dialog-heading > div:first-child > span:last-child { min-width: 0; display: grid; }
.card-heading strong, .dialog-heading strong { font-size: 0.9rem; }
.card-heading small, .dialog-heading small { color: var(--text-soft); font-size: 0.68rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.status-chip { flex: 0 0 auto; padding: 5px 9px; border-radius: 999px; display: inline-flex; align-items: center; gap: 6px; font-size: 0.69rem; font-weight: 800; }
.status-chip i { font-size: 0.45rem; }
.status-chip.idle { color: var(--text-soft); background: var(--surface-muted); }
.status-chip.loading { color: var(--warning); background: rgba(244,166,42,0.12); }
.status-chip.playing { color: var(--success); background: rgba(40,180,135,0.12); }
.status-chip.paused { color: var(--primary-strong); background: var(--primary-pale); }
.status-chip.error { color: var(--danger); background: rgba(231,101,112,0.12); }

.metadata-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 16px; }
.metadata-grid > div { min-width: 0; padding: 10px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface-soft); }
.metadata-grid span, .metadata-grid strong { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.metadata-grid span { color: var(--text-soft); font-size: 0.66rem; }
.metadata-grid strong { margin-top: 3px; font-size: 0.79rem; }
.source-line { margin-top: 12px; padding: 9px 11px; display: flex; align-items: center; gap: 8px; border-radius: 11px; color: var(--text-soft); background: var(--surface-soft); font-size: 0.72rem; }
.source-line i { color: var(--primary); }
.source-line span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.mini-button { min-height: 32px; padding: 0 9px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface-soft); font-size: 0.72rem; font-weight: 700; }
.mini-button i { margin-right: 5px; }
.danger-text { color: var(--danger); }
.subtitle-settings { display: grid; grid-template-columns: minmax(0, 1.8fr) auto auto; gap: 10px; margin-top: 16px; align-items: center; }
.subtitle-settings label { min-width: 0; display: flex; align-items: center; gap: 8px; }
.subtitle-settings label > span { color: var(--text-soft); font-size: 0.7rem; white-space: nowrap; }
.subtitle-settings input[type="range"] { flex: 1; min-width: 60px; background: linear-gradient(to right, var(--primary) 0 var(--value, 29%), var(--surface-muted) var(--value, 29%) 100%); }
.subtitle-settings output { min-width: 34px; color: var(--text-soft); font-size: 0.67rem; }
.subtitle-settings input[type="color"] { width: 31px; height: 31px; padding: 2px; border: 1px solid var(--line); border-radius: 9px; background: var(--surface-soft); }
.opacity-setting { grid-column: 1 / -1; }

.sidebar { display: grid; gap: 18px; position: sticky; top: 18px; }
.side-card { border-radius: var(--radius-lg); overflow: hidden; }
.side-heading { min-height: 64px; padding: 13px 15px; border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.side-heading > div:first-child { min-width: 0; display: grid; }
.side-heading strong { font-size: 0.88rem; }
.side-heading span { color: var(--text-soft); font-size: 0.67rem; }
.heading-actions { display: flex; align-items: center; gap: 7px; }
.switch-label { display: flex; align-items: center; gap: 6px; }
.switch-label span { font-size: 0.65rem; }
.switch-label input { position: absolute; opacity: 0; pointer-events: none; }
.switch-label i { position: relative; width: 32px; height: 18px; border-radius: 999px; background: var(--surface-muted); transition: background var(--transition); }
.switch-label i::after { content: ""; position: absolute; width: 14px; height: 14px; left: 2px; top: 2px; border-radius: 50%; background: #fff; box-shadow: 0 1px 5px rgba(0,0,0,0.18); transition: transform var(--transition); }
.switch-label input:checked + i { background: var(--primary); }
.switch-label input:checked + i::after { transform: translateX(14px); }

.list-body { max-height: 342px; overflow: auto; padding: 7px; scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent; }
.list-body::-webkit-scrollbar { width: 6px; }
.list-body::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 999px; }
.empty-state { min-height: 180px; padding: 20px; display: grid; place-content: center; justify-items: center; text-align: center; color: var(--text-soft); }
.empty-state i { margin-bottom: 12px; color: var(--primary); font-size: 1.8rem; opacity: 0.7; }
.empty-state strong { color: var(--text); font-size: 0.82rem; }
.empty-state span { margin-top: 4px; font-size: 0.68rem; }

.media-list-item {
  width: 100%;
  padding: 9px;
  border: 1px solid transparent;
  border-radius: 13px;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) auto;
  align-items: center;
  gap: 9px;
  text-align: left;
  background: transparent;
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}
.media-list-item:hover { border-color: var(--line); background: var(--surface-soft); }
.media-list-item.active { border-color: rgba(69,169,233,0.3); background: var(--primary-pale); }
.item-thumb { width: 44px; height: 38px; border-radius: 10px; display: grid; place-items: center; color: var(--primary-deep); background: linear-gradient(145deg, var(--primary-pale), var(--surface-muted)); }
.item-copy { min-width: 0; display: grid; }
.item-copy strong, .item-copy small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.item-copy strong { font-size: 0.75rem; }
.item-copy small { margin-top: 2px; color: var(--text-soft); font-size: 0.62rem; }
.item-actions { display: flex; align-items: center; gap: 2px; }
.item-action { width: 28px; height: 28px; border: 0; border-radius: 8px; color: var(--text-soft); background: transparent; }
.item-action:hover { color: var(--primary-strong); background: var(--surface-muted); }
.item-action.danger:hover { color: var(--danger); }

.compatibility-list { padding: 12px 15px 16px; display: grid; gap: 10px; }
.compatibility-list > div { display: grid; grid-template-columns: 18px 1fr; gap: 8px; align-items: start; color: var(--text-soft); font-size: 0.7rem; }
.compatibility-list i { margin-top: 3px; color: var(--primary); }
.compatibility-list strong { color: var(--text); }

.footer-note { padding: 15px 4px 0; display: flex; justify-content: space-between; gap: 12px; color: var(--text-soft); font-size: 0.7rem; }
.footer-note i { margin-right: 5px; color: var(--success); }

.toast-region { position: fixed; z-index: 100; right: 20px; bottom: 20px; display: grid; gap: 9px; pointer-events: none; }
.toast {
  width: min(360px, calc(100vw - 40px));
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 9px;
  align-items: center;
  color: var(--text);
  background: var(--surface-solid);
  box-shadow: var(--shadow);
  animation: toast-in 220ms ease both;
  pointer-events: auto;
}
.toast.removing { animation: toast-out 180ms ease both; }
.toast > i { width: 28px; height: 28px; display: grid; place-items: center; border-radius: 9px; color: var(--primary-deep); background: var(--primary-pale); }
.toast.success > i { color: var(--success); background: rgba(40,180,135,0.12); }
.toast.error > i { color: var(--danger); background: rgba(231,101,112,0.12); }
.toast.warning > i { color: var(--warning); background: rgba(244,166,42,0.12); }
.toast strong { display: block; font-size: 0.78rem; }
.toast span { display: block; margin-top: 2px; color: var(--text-soft); font-size: 0.68rem; }
@keyframes toast-in { from { opacity: 0; transform: translateY(12px) scale(0.97); } }
@keyframes toast-out { to { opacity: 0; transform: translateY(8px) scale(0.97); } }

.shortcut-dialog {
  width: min(620px, calc(100% - 28px));
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 22px;
  color: var(--text);
  background: var(--surface-solid);
  box-shadow: var(--shadow);
}
.shortcut-dialog::backdrop { background: rgba(4, 14, 22, 0.58); backdrop-filter: blur(5px); }
.dialog-heading { padding: 16px 18px; border-bottom: 1px solid var(--line); }
.shortcut-grid { padding: 16px 18px 20px; display: grid; grid-template-columns: 1fr 1fr; gap: 9px 18px; }
.shortcut-grid > div { min-width: 0; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 8px 0; border-bottom: 1px dashed var(--line); }
kbd { min-width: 48px; padding: 4px 7px; border: 1px solid var(--line-strong); border-bottom-width: 2px; border-radius: 7px; color: var(--primary-deep); background: var(--surface-soft); text-align: center; font-family: inherit; font-size: 0.65rem; font-weight: 800; }
.shortcut-grid span { color: var(--text-soft); font-size: 0.72rem; text-align: right; }

[hidden] { display: none !important; }

@media (max-width: 1220px) {
  .workspace { grid-template-columns: minmax(0, 1fr) 318px; }
  .details-grid { grid-template-columns: 1fr; }
  .subtitle-settings { grid-template-columns: minmax(0, 1fr) auto auto; }
  .metadata-grid { grid-template-columns: repeat(4, 1fr); }
  .text-control span { display: none; }
}

@media (max-width: 980px) {
  .workspace { grid-template-columns: 1fr; }
  .sidebar { position: static; grid-template-columns: 1fr 1fr; }
  .tips-card { grid-column: 1 / -1; }
  .list-body { max-height: 280px; }
  .player-stage { min-height: 300px; }
}

@media (max-width: 760px) {
  .app-shell { width: min(100% - 18px, 1540px); padding-top: 9px; }
  .topbar { min-height: 62px; padding: 9px 11px; border-radius: 17px; }
  .brand-mark { width: 40px; height: 40px; border-radius: 13px; }
  .brand-copy small, .network-pill span { display: none; }
  .network-pill { width: 38px; padding: 0; justify-content: center; }
  .workspace { margin-top: 10px; gap: 10px; }
  .player-column, .sidebar { gap: 10px; }
  .player-card, .info-card, .side-card { border-radius: 18px; }
  .player-stage { min-height: 0; aspect-ratio: 16 / 9; }
  .stage-placeholder { padding: 18px; }
  .placeholder-orb { width: 64px; height: 64px; margin-bottom: 12px; }
  .stage-placeholder p { margin-bottom: 15px; font-size: 0.78rem; }
  .stage-placeholder h1 { font-size: 1.35rem; }
  .button { min-height: 40px; padding: 0 13px; font-size: 0.78rem; }
  .player-chrome { padding: 52px 8px 7px; }
  .media-summary { margin-bottom: 6px; }
  .media-text .eyebrow, .stage-badges, .control-right .text-control, #qualityControl { display: none !important; }
  .media-text strong { font-size: 0.78rem; }
  .control-row { gap: 4px; }
  .control-button { width: 32px; height: 32px; }
  .control-left { flex: 1; }
  .control-left #rewindBtn, .control-left #forwardBtn, .volume-slider, .time-separator, #durationDisplay { display: none; }
  .time-readout { margin-left: 2px; font-size: 0.64rem; }
  .select-control { padding: 0 4px; }
  .select-control i { display: none; }
  .select-control select { max-width: 48px; }
  .source-panel { padding: 11px; }
  .url-entry { grid-template-columns: 1fr auto; }
  #queueUrlBtn { grid-column: 1 / -1; min-height: 38px; }
  .quick-actions { grid-template-columns: 1fr; }
  .action-tile { padding: 9px; }
  .details-grid { gap: 10px; }
  .info-card { padding: 13px; }
  .metadata-grid { grid-template-columns: 1fr 1fr; }
  .subtitle-settings { grid-template-columns: 1fr auto auto; }
  .opacity-setting { grid-column: 1 / -1; }
  .sidebar { grid-template-columns: 1fr; }
  .tips-card { grid-column: auto; }
  .footer-note { flex-direction: column; align-items: center; text-align: center; }
  .shortcut-grid { grid-template-columns: 1fr; }
  .toast-region { right: 10px; bottom: 10px; }
  .subtitle-layer { bottom: 76px; left: 4%; right: 4%; }
}

@media (max-width: 460px) {
  .brand-copy strong { font-size: 0.92rem; }
  .top-actions { gap: 5px; }
  .icon-button { width: 36px; height: 36px; }
  .placeholder-actions { width: 100%; }
  .placeholder-actions .button { flex: 1; }
  .url-entry { grid-template-columns: 1fr; }
  .url-entry .button { width: 100%; }
  .control-right #screenshotBtn { display: none; }
  .subtitle-settings { grid-template-columns: 1fr 1fr; }
  .subtitle-settings label:first-child, .opacity-setting { grid-column: 1 / -1; }
  .metadata-grid { gap: 7px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}