:root {
  color-scheme: dark;
  --bg: #0a0f1d;
  --surface: #121a2c;
  --raised: #1a2540;
  --border: #2a3654;
  --text: #f4f7ff;
  --muted: #9ca8c2;
  --accent: #7b6cff;
  --accent-2: #9c91ff;
  --danger: #f06b77;
  --shadow: 0 22px 50px rgba(0, 0, 0, .24);
}

body.light {
  color-scheme: light;
  --bg: #f3f5fa;
  --surface: #fff;
  --raised: #edf0f7;
  --border: #d9deea;
  --text: #172033;
  --muted: #68738a;
  --accent: #6557e8;
  --accent-2: #4f42cd;
  --danger: #c54250;
  --shadow: 0 20px 45px rgba(37, 45, 70, .10);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 10% 0%, rgba(123, 108, 255, .13), transparent 35rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
button, input, select { font: inherit; }
button { color: inherit; }
.topbar, main { width: min(1240px, calc(100% - 40px)); margin-inline: auto; }
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 34px 0 22px;
}
h1, h2, p { margin: 0; }
h1 { font-size: clamp(1.8rem, 4vw, 2.7rem); letter-spacing: -.04em; }
h2 { font-size: 1.25rem; letter-spacing: -.02em; }
.subtitle, .panel-heading p, .quick-card p, #playerDetail { color: var(--muted); margin-top: 6px; }
.eyebrow { color: var(--accent-2); font-size: .72rem; font-weight: 800; letter-spacing: .14em; margin-bottom: 6px; }
.header-actions, .play-actions, .panel-actions { display: flex; align-items: center; gap: 10px; }
.theme-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-weight: 650;
  white-space: nowrap;
}
.theme-toggle input { accent-color: var(--accent); width: 18px; height: 18px; }
.button {
  min-height: 42px;
  border: 1px solid var(--border);
  border-radius: 11px;
  padding: 9px 15px;
  background: var(--raised);
  color: var(--text);
  font-weight: 750;
  cursor: pointer;
  transition: .18s ease;
}
.button:hover { border-color: var(--accent); transform: translateY(-1px); }
.button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.button.primary:hover { background: var(--accent-2); }
.button.danger { color: var(--danger); }
.button:disabled { opacity: .45; cursor: not-allowed; transform: none; }
.file-button { display: inline-flex; align-items: center; }
.file-button input { display: none; }
.summary-grid { display: grid; grid-template-columns: 160px 160px 1fr; gap: 12px; margin-bottom: 18px; }
.summary-card, .panel {
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.summary-card { border-radius: 14px; padding: 14px 16px; }
.summary-card span { display: block; color: var(--muted); font-size: .78rem; margin-bottom: 5px; }
.summary-card strong { font-size: 1.25rem; }
.summary-card.wide strong { font-size: .95rem; }
.main-tabs, .sub-tabs { display: flex; gap: 6px; margin: 0 0 14px; }
.tab, .sub-tab {
  border: 0;
  border-radius: 10px;
  padding: 11px 22px;
  background: var(--raised);
  color: var(--muted);
  font-weight: 800;
  cursor: pointer;
}
.tab.active, .sub-tab.active { background: var(--accent); color: #fff; }
.screen { display: none; padding-bottom: 40px; }
.screen.active { display: grid; gap: 16px; }
#editorScreen { grid-template-columns: minmax(0, 1.55fr) minmax(330px, .85fr); }
.panel { border-radius: 17px; padding: 18px; }
.panel-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th { color: var(--muted); font-size: .72rem; letter-spacing: .1em; text-align: left; padding: 10px; }
td { border-top: 1px solid var(--border); padding: 9px 10px; }
td:first-child { font-weight: 850; }
input, select {
  width: 100%;
  min-height: 41px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--raised);
  color: var(--text);
  padding: 8px 10px;
  outline: none;
}
input:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent); }
label > span { display: block; color: var(--muted); font-size: .78rem; font-weight: 750; margin-bottom: 6px; }
.small-input { width: 84px; }
.filename-input { min-width: 200px; }
.icon-button { min-height: 36px; padding: 6px 10px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-grid label:first-child { grid-column: 1 / -1; }
.form-grid .button { align-self: end; }
.item-list { display: grid; gap: 8px; margin-top: 16px; }
.list-item, .library-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--raised);
  padding: 12px;
}
.list-item { display: flex; align-items: center; justify-content: space-between; gap: 10px; cursor: pointer; }
.list-item.selected { border-color: var(--accent); }
.item-meta { color: var(--muted); font-size: .82rem; margin-top: 4px; }
.empty-state { color: var(--muted); text-align: center; padding: 44px 18px; border: 1px dashed var(--border); border-radius: 12px; }
.player-toolbar { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 16px; }
.player-toolbar audio { grid-column: 1 / -1; width: 100%; height: 42px; }
.quick-card { display: grid; grid-template-columns: .8fr 1.5fr; gap: 20px; align-items: end; }
.quick-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; align-items: end; }
.library-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }
.library-card { display: flex; flex-direction: column; gap: 10px; }
.library-card h3 { margin: 0; }
.library-card p { color: var(--muted); margin: 0; flex: 1; }
.card-actions { display: flex; gap: 7px; }
.card-actions .button { flex: 1; }
.hidden { display: none !important; }
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  translate: -50% 20px;
  opacity: 0;
  pointer-events: none;
  padding: 11px 17px;
  border-radius: 10px;
  background: var(--text);
  color: var(--bg);
  font-weight: 750;
  transition: .2s ease;
  z-index: 10;
}
.toast.show { translate: -50% 0; opacity: 1; }
@media (max-width: 900px) {
  #editorScreen, .quick-card { grid-template-columns: 1fr; }
  .quick-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 650px) {
  .topbar { align-items: flex-start; flex-direction: column; }
  .header-actions { width: 100%; justify-content: space-between; }
  .summary-grid { grid-template-columns: 1fr 1fr; }
  .summary-card.wide { grid-column: 1 / -1; }
  .player-toolbar { grid-template-columns: 1fr; }
  .play-actions { flex-wrap: wrap; }
  .quick-grid, .form-grid { grid-template-columns: 1fr; }
  .form-grid label:first-child { grid-column: auto; }
}