:root {
  color-scheme: dark;
  --bg: #0a0e13;
  --panel: #10161e;
  --panel-raised: #151d27;
  --panel-soft: #0d131a;
  --line: #26313e;
  --line-strong: #344252;
  --text: #f2f5f7;
  --muted: #8d9aa9;
  --dim: #5e6c7a;
  --accent: #ff8b4d;
  --accent-strong: #ff6b35;
  --cyan: #55d6c2;
  --danger: #ff766e;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.3);
  font-family: "DM Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  background:
    linear-gradient(180deg, rgba(28, 41, 52, 0.28), transparent 34rem),
    var(--bg);
}

button, input { font: inherit; }
button { color: inherit; }

.app-shell { min-height: 100vh; }

.topbar {
  height: 72px;
  padding: 0 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(52, 66, 82, 0.55);
  background: rgba(10, 14, 19, 0.9);
  backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font: 700 17px "Space Grotesk", sans-serif;
  text-decoration: none;
  letter-spacing: 0;
}

.brand-mark { display: inline-flex; align-items: end; gap: 3px; height: 22px; }
.brand-mark span { display: block; width: 4px; border-radius: 2px; background: var(--accent); }
.brand-mark span:nth-child(1) { height: 11px; opacity: 0.6; }
.brand-mark span:nth-child(2) { height: 18px; }
.brand-mark span:nth-child(3) { height: 14px; opacity: 0.8; }

.topbar-actions { display: flex; align-items: center; gap: 16px; }
.library-count, .track-position, .queue-count { font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; }

.icon-button, .control-button {
  border: 1px solid var(--line);
  background: var(--panel-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease, color 160ms ease, transform 160ms ease;
}
.icon-button { width: 36px; height: 36px; border-radius: 8px; }
.icon-button:hover, .control-button:hover, .utility-button:hover { border-color: var(--accent); color: var(--accent); background: var(--panel-raised); }
.icon-button:active, .control-button:active, .utility-button:active { transform: translateY(1px); }
.icon-button svg, .control-button svg, .utility-button svg, .search-box svg, .player-error svg { width: 17px; height: 17px; stroke-width: 1.8; }

.workspace {
  width: min(1440px, calc(100% - 68px));
  margin: 0 auto;
  padding: 32px 0 48px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 350px;
  gap: 28px;
}

.player-column { min-width: 0; }
.player-frame {
  aspect-ratio: 16 / 9;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: #05070a;
  box-shadow: var(--shadow);
}
.player-frame video { display: block; width: 100%; height: 100%; object-fit: contain; background: #05070a; }
.player-state, .player-error {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 11px;
  color: var(--muted);
  background: rgba(5, 7, 10, 0.68);
  pointer-events: none;
}
.player-state[hidden], .player-error[hidden] { display: none; }
.player-error { color: var(--danger); }
.player-error strong { color: var(--text); font-size: 15px; }
.player-error span { color: var(--muted); font-size: 13px; }
.spinner { width: 22px; height: 22px; border: 2px solid rgba(141, 154, 169, 0.28); border-top-color: var(--accent); border-radius: 50%; animation: spin 800ms linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.center-play {
  position: absolute;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%);
  width: 64px;
  height: 64px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  background: rgba(255, 139, 77, 0.92);
  display: grid;
  place-items: center;
  cursor: pointer;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.28);
  transition: transform 160ms ease, background 160ms ease, opacity 160ms ease;
}
.center-play:hover { transform: translate(-50%, -50%) scale(1.05); background: var(--accent-strong); }
.center-play svg { width: 24px; height: 24px; fill: currentColor; stroke-width: 1.5; }
.center-play.is-playing { opacity: 0; pointer-events: none; }
.center-play.is-hidden { opacity: 0; pointer-events: none; }
.source-chip { position: absolute; top: 14px; left: 14px; padding: 5px 8px; border: 1px solid rgba(255, 255, 255, 0.16); border-radius: 5px; color: #dce5ea; background: rgba(5, 7, 10, 0.65); font-size: 10px; letter-spacing: 0.12em; }

.player-meta { padding: 23px 2px 17px; display: flex; align-items: start; justify-content: space-between; gap: 18px; }
.eyebrow { color: var(--accent); font-size: 10px; font-weight: 700; letter-spacing: 0.16em; }
.track-heading h1 { margin: 7px 0 4px; max-width: 720px; font: 600 clamp(20px, 2.1vw, 30px) "Space Grotesk", sans-serif; letter-spacing: 0; line-height: 1.16; }
.track-heading p { margin: 0; color: var(--muted); font-size: 13px; }
.track-position { padding-top: 4px; white-space: nowrap; }

.progress-area { display: grid; grid-template-columns: 42px minmax(0, 1fr) 42px; align-items: center; gap: 12px; }
.timecode { color: var(--dim); font-size: 11px; font-variant-numeric: tabular-nums; }
.timecode:last-child { text-align: right; }
input[type="range"] { appearance: none; width: 100%; height: 4px; border-radius: 999px; background: var(--line); cursor: pointer; accent-color: var(--accent); }
input[type="range"]::-webkit-slider-thumb { appearance: none; width: 13px; height: 13px; border-radius: 50%; background: var(--accent); border: 2px solid var(--bg); box-shadow: 0 0 0 1px var(--accent); }
input[type="range"]::-moz-range-thumb { width: 11px; height: 11px; border-radius: 50%; background: var(--accent); border: 2px solid var(--bg); }

.control-row { display: flex; align-items: center; justify-content: space-between; padding: 18px 0 14px; border-bottom: 1px solid var(--line); }
.control-group { display: flex; align-items: center; gap: 9px; }
.control-button { position: relative; width: 38px; height: 38px; border-radius: 50%; }
.control-button.primary-control { width: 46px; height: 46px; color: #101418; border-color: var(--accent); background: var(--accent); }
.control-button.primary-control:hover { color: #101418; background: #ffa06d; }
.control-button.primary-control svg { fill: currentColor; }
.control-badge { position: absolute; right: -2px; bottom: -5px; color: var(--accent); font-size: 9px; font-weight: 700; }
.secondary-controls { gap: 11px; }
.volume-slider { width: 82px; }

.utility-row { display: flex; align-items: center; gap: 11px; padding-top: 16px; }
.utility-button { display: inline-flex; align-items: center; gap: 8px; padding: 9px 12px; border: 1px solid var(--line); border-radius: 7px; background: transparent; cursor: pointer; font-size: 12px; transition: border-color 160ms ease, background 160ms ease, color 160ms ease, transform 160ms ease; }
.utility-button.quiet { color: var(--muted); }
.source-note { margin-left: auto; color: var(--dim); font-size: 11px; }

.queue-panel { min-width: 0; min-height: 0; padding: 20px; border: 1px solid var(--line); border-radius: 10px; background: rgba(16, 22, 30, 0.82); }
.queue-header { display: flex; justify-content: space-between; align-items: end; padding-bottom: 17px; }
.queue-header h2 { margin: 6px 0 0; font: 600 20px "Space Grotesk", sans-serif; }
.queue-count { padding: 5px 7px; border: 1px solid var(--line); border-radius: 5px; color: var(--cyan); }
.search-box { height: 38px; display: flex; align-items: center; gap: 9px; padding: 0 11px; border: 1px solid var(--line); border-radius: 7px; background: var(--panel-soft); color: var(--dim); }
.search-box input { width: 100%; border: 0; outline: 0; color: var(--text); background: transparent; font-size: 12px; }
.search-box input::placeholder { color: var(--dim); }
.queue-list { max-height: calc(100vh - 210px); min-height: 320px; margin-top: 14px; overflow: auto; padding-right: 3px; }
.queue-list::-webkit-scrollbar { width: 5px; }
.queue-list::-webkit-scrollbar-thumb { border-radius: 4px; background: var(--line-strong); }
.queue-item { width: 100%; display: grid; grid-template-columns: 32px minmax(0, 1fr) auto; gap: 10px; align-items: center; padding: 11px 8px; border: 1px solid transparent; border-radius: 7px; background: transparent; text-align: left; cursor: pointer; }
.queue-item:hover { background: var(--panel-raised); }
.queue-item.is-active { border-color: rgba(255, 139, 77, 0.36); background: rgba(255, 139, 77, 0.08); }
.queue-index { color: var(--dim); font-size: 11px; font-variant-numeric: tabular-nums; text-align: center; }
.queue-item.is-active .queue-index { color: var(--accent); }
.queue-title { min-width: 0; overflow: hidden; color: #d7dfe5; font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.queue-duration { color: var(--dim); font-size: 10px; font-variant-numeric: tabular-nums; }

.toast { position: fixed; left: 50%; bottom: 26px; z-index: 20; max-width: calc(100% - 36px); padding: 11px 15px; border: 1px solid var(--line-strong); border-radius: 7px; color: var(--text); background: #151d27; box-shadow: var(--shadow); font-size: 12px; opacity: 0; pointer-events: none; transform: translate(-50%, 12px); transition: opacity 180ms ease, transform 180ms ease; }
.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 980px) {
  .workspace { grid-template-columns: minmax(0, 1fr) 300px; gap: 20px; }
  .queue-panel { padding: 16px; }
  .source-note { display: none; }
}

@media (max-width: 760px) {
  .topbar { height: 62px; padding: 0 17px; }
  .library-count { display: none; }
  .workspace { width: min(100% - 28px, 640px); display: block; padding: 16px 0 30px; }
  .player-frame { border-radius: 8px; }
  .player-meta { padding-top: 17px; }
  .track-heading h1 { font-size: 21px; }
  .control-row { padding-top: 14px; }
  .secondary-controls { gap: 7px; }
  .volume-slider { width: 64px; }
  .queue-panel { margin-top: 28px; }
  .queue-list { max-height: 420px; min-height: 220px; }
}

@media (max-width: 450px) {
  .brand { font-size: 15px; }
  .control-button { width: 35px; height: 35px; }
  .control-button.primary-control { width: 42px; height: 42px; }
  .control-group { gap: 5px; }
  .secondary-controls .volume-slider { display: none; }
  .utility-button { flex: 1; justify-content: center; padding-inline: 8px; }
  .utility-row { gap: 7px; }
}