:root {
  color-scheme: light dark;
  --app-bg: linear-gradient(135deg, #f3efe7 0%, #dce8f2 100%);
  --hero-bg: rgba(255, 255, 255, 0.72);
  --hero-border: rgba(26, 40, 56, 0.12);
  --hero-shadow: 0 24px 80px rgba(26, 40, 56, 0.12);
  --eyebrow: #5c6b73;
  --slot-accent: #1f6f78;
}

[data-bs-theme="dark"] {
  --app-bg: radial-gradient(circle at top, #1e2a3a 0%, #11161d 58%, #090c10 100%);
  --hero-bg: rgba(18, 24, 32, 0.8);
  --hero-border: rgba(214, 224, 235, 0.08);
  --hero-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  --eyebrow: #8eb6c8;
  --slot-accent: #7dd3c0;
}

body {
  min-height: 100vh;
  background: var(--app-bg);
  background-attachment: fixed;
}

.app-shell {
  width: 100%;
  max-width: 100%;
}

.master-bar {
  top: 0;
  z-index: 1030;
}

.master-bar-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: 1rem 1.5rem;
  padding: 0.85rem 1rem;
  background: var(--hero-bg);
  border: 1px solid var(--hero-border);
  box-shadow: var(--hero-shadow);
  backdrop-filter: blur(12px);
}

.master-brand {
  flex: 0 0 auto;
}

.master-title {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1;
}

.master-controls {
  display: flex;
  flex: 1 1 30rem;
  flex-wrap: wrap;
  align-items: end;
  justify-content: flex-end;
  gap: 0.85rem 1rem;
}

.master-control-group {
  min-width: 9rem;
}

.eyebrow {
  letter-spacing: 0.18em;
  color: var(--eyebrow);
  font-size: 0.75rem;
  font-weight: 700;
}

.master-switch {
  padding-bottom: 0.18rem;
}

.master-transport-button {
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.master-status {
  min-width: min(100%, 18rem);
  max-width: 28rem;
  line-height: 1.25;
}

loop-slot {
  display: block;
}

.slot-card {
  border: 1px solid var(--hero-border);
  background: color-mix(in srgb, var(--bs-body-bg) 88%, transparent);
  box-shadow: 0 10px 28px rgba(20, 26, 34, 0.08);
  transition: box-shadow 180ms ease, border-color 180ms ease;
}

.slot-card:hover {
  border-color: color-mix(in srgb, var(--slot-accent) 28%, var(--hero-border));
  box-shadow: 0 20px 40px rgba(20, 26, 34, 0.12);
}

.slot-layout {
  display: flex;
  align-items: stretch;
  gap: 1rem;
  min-height: 100%;
}

.slot-main {
  flex: 1 1 auto;
  min-width: 0;
}

.volume-rail {
  display: flex;
  flex: 0 0 3.1rem;
  flex-direction: column;
  align-items: center;
  align-self: stretch;
  gap: 0.75rem;
  padding-right: 0.9rem;
  border-right: 1px solid var(--hero-border);
}

.volume-rail-label {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.72;
}

.volume-range-shell {
  position: relative;
  flex: 1 1 auto;
  width: 100%;
  min-height: 0;
  overflow: visible;
}

.volume-range-vertical {
  -webkit-appearance: none;
  appearance: none;
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 1.5rem;
  min-width: 0;
  margin: 0;
  padding: 0;
  background: transparent;
  transform: translate(-50%, -50%) rotate(-90deg);
  transform-origin: center;
}

.volume-range-vertical::-webkit-slider-runnable-track {
  height: 0.45rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--bs-secondary-color) 22%, transparent);
}

.volume-range-vertical::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 1.2rem;
  height: 1.2rem;
  margin-top: -0.375rem;
  border: 0;
  border-radius: 50%;
  background: var(--bs-primary);
}

.volume-range-vertical::-moz-range-track {
  height: 0.45rem;
  border: 0;
  border-radius: 999px;
  background: color-mix(in srgb, var(--bs-secondary-color) 22%, transparent);
}

.volume-range-vertical::-moz-range-thumb {
  width: 1.2rem;
  height: 1.2rem;
  border: 0;
  border-radius: 50%;
  background: var(--bs-primary);
}

.slot-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
}

.slot-badge {
  color: var(--slot-accent);
}

.slot-meta {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 0.65rem 0.85rem;
}

.slot-meta > div {
  min-width: 0;
}

.slot-meta dt {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.72;
  margin-bottom: 0.15rem;
}

.slot-meta dd {
  margin-bottom: 0;
  font-weight: 600;
}

.slot-meta .input-group {
  width: 100%;
  max-width: 9rem;
  margin-left: auto;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font-size: 0.82rem;
  font-weight: 600;
  background: color-mix(in srgb, var(--slot-accent) 12%, var(--bs-body-bg));
}

.waveform-shell {
  padding: 0.6rem;
  border: 1px solid var(--hero-border);
  border-radius: 1rem;
  background: color-mix(in srgb, var(--bs-body-bg) 92%, transparent);
}

.waveform-button {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  text-align: left;
  color: inherit;
  cursor: pointer;
}

.waveform-button:hover {
  border-color: color-mix(in srgb, var(--slot-accent) 28%, var(--hero-border));
}

.waveform-button:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--slot-accent) 70%, white);
  outline-offset: 2px;
}

.waveform-canvas {
  display: block;
  width: 100%;
  height: 6rem;
}

.waveform-hint {
  display: block;
  margin-top: 0.4rem;
}

.waveform-file-name {
  min-width: 0;
  flex: 1 1 auto;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.waveform-clear-button {
  flex: 0 0 auto;
  padding: 0;
  border: 0;
  line-height: 1.1;
  text-decoration: none;
}

.filter-value {
  min-width: 3.5rem;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

@media (min-width: 1200px) {
  .slot-card .card-body {
    padding: 1rem;
  }

  .slot-card .mb-4 {
    margin-bottom: 0.9rem !important;
  }

  .slot-card .mb-3 {
    margin-bottom: 0.75rem !important;
  }

  .slot-card .h4 {
    font-size: 1rem;
  }

  .slot-card .form-label,
  .slot-card dt {
    font-size: 0.72rem;
  }

  .slot-card .form-control,
  .slot-card .input-group-text,
  .slot-card .btn,
  .slot-card .small,
  .slot-card .form-text {
    font-size: 0.8rem;
  }

  .slot-card .btn {
    padding-top: 0.45rem;
    padding-bottom: 0.45rem;
  }
}

@media (max-width: 767px) {
  .master-bar-inner {
    align-items: start;
  }

  .master-controls {
    justify-content: stretch;
  }

  .master-control-group,
  .master-status {
    width: 100%;
    max-width: none;
  }

  .slot-meta {
    grid-template-columns: 1fr;
  }

  .slot-layout {
    gap: 0.8rem;
  }

  .volume-rail {
    flex-basis: 2.6rem;
    padding-right: 0.75rem;
  }
}