/* greg — ultra-refined dark UI */

:root {
  --bg-deep: #050508;
  --bg-elevated: #0c0c10;
  --text: #f4f2ed;
  --text-muted: rgba(244, 242, 237, 0.45);
  --text-dim: rgba(244, 242, 237, 0.28);
  --accent: #a89cf0;
  --accent-dim: rgba(168, 156, 240, 0.35);
  --line: rgba(255, 255, 255, 0.06);
  --glass: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.09);
  --radius-lg: 1.25rem;
  --radius-pill: 100px;
  --font: 'Outfit', system-ui, sans-serif;
  --font-mono: 'DM Mono', ui-monospace, monospace;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --shadow-glow: 0 0 80px rgba(168, 156, 240, 0.12);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  height: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100%;
  min-height: 100dvh;
  background: var(--bg-deep);
  color: var(--text);
  font-family: var(--font);
  font-weight: 400;
  letter-spacing: -0.01em;
  -webkit-tap-highlight-color: transparent;
}

/* Ambient layers */
.ambient {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 120% 80% at 50% -20%, rgba(88, 76, 160, 0.35), transparent 55%),
    radial-gradient(ellipse 80% 50% at 100% 50%, rgba(60, 90, 140, 0.12), transparent 45%),
    radial-gradient(ellipse 60% 40% at 0% 80%, rgba(120, 80, 120, 0.08), transparent 50%),
    var(--bg-deep);
}

.grain {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.028;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Fullscreen audio visualizer (behind UI) */
.viz-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  pointer-events: none;
  display: block;
  image-rendering: auto;
  -webkit-font-smoothing: antialiased;
  transform: translateZ(0);
  backface-visibility: hidden;
}

.shell {
  position: relative;
  z-index: 3;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding: max(1.25rem, env(safe-area-inset-top)) max(1.25rem, env(safe-area-inset-right))
    max(1rem, env(safe-area-inset-bottom)) max(1.25rem, env(safe-area-inset-left));
}

/* Brand */
.top {
  flex-shrink: 0;
  padding-bottom: 0.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.brand__name {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.brand__line {
  display: block;
  width: 2rem;
  height: 1px;
  background: linear-gradient(90deg, var(--line), transparent);
}

/* Toast / errors */
.toast {
  position: fixed;
  top: max(1rem, env(safe-area-inset-top));
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  max-width: min(22rem, calc(100% - 2rem));
  margin: 0;
  padding: 0.65rem 1rem;
  font-size: 0.75rem;
  line-height: 1.45;
  font-weight: 400;
  color: #fecaca;
  text-align: center;
  background: rgba(80, 20, 20, 0.55);
  border: 1px solid rgba(248, 113, 113, 0.25);
  border-radius: 0.75rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* Stage */
.stage {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  padding: 1rem 0 7rem;
}

/* Primary CTA */
.btn-primary {
  position: relative;
  appearance: none;
  border: none;
  background: transparent;
  padding: 0;
  cursor: pointer;
  border-radius: var(--radius-pill);
  transition: transform 0.5s var(--ease-out);
}

.btn-primary:hover {
  transform: scale(1.02);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-primary__ring {
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  background: conic-gradient(from 180deg, var(--accent-dim), transparent 40%, rgba(255, 255, 255, 0.08), transparent 75%, var(--accent-dim));
  opacity: 0.85;
  animation: ring-spin 8s linear infinite;
}

@keyframes ring-spin {
  to {
    transform: rotate(360deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .btn-primary__ring {
    animation: none;
    opacity: 0.5;
  }
}

.btn-primary__inner {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  padding: 1.35rem 2.75rem;
  border-radius: inherit;
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.09) 0%, rgba(255, 255, 255, 0.02) 100%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-glow), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.btn-primary__label {
  font-size: 1.0625rem;
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--text);
}

.btn-primary__hint {
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* Progress (over visualizer, above dock) */
.player-ui {
  position: fixed;
  left: 50%;
  bottom: calc(5.75rem + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  width: calc(100% - 2rem);
  max-width: 22rem;
  z-index: 5;
  animation: fade-up 0.55s var(--ease-out) both;
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .player-ui {
    animation: none;
  }
}

/* Progress */
.progress-block {
  width: 100%;
}

.progress-bar {
  height: 3px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: linear-gradient(90deg, rgba(168, 156, 240, 0.25), var(--accent));
  transition: width 0.12s linear;
}

.progress-times {
  display: flex;
  justify-content: space-between;
  margin-top: 0.5rem;
}

.time {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-variant-numeric: tabular-nums;
  color: var(--text-dim);
}

/* Dock */
.dock {
  position: fixed;
  left: 50%;
  bottom: max(1.25rem, env(safe-area-inset-bottom));
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  align-items: stretch;
  gap: 0.35rem;
  padding: 0.4rem;
  max-width: calc(100% - 2rem);
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  box-shadow: 0 4px 40px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.dock__btn {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.75rem 0.9rem;
  border: none;
  border-radius: calc(var(--radius-lg) - 4px);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font);
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition:
    color 0.25s var(--ease-out),
    background 0.25s var(--ease-out);
}

.dock__btn:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.dock__btn:active {
  background: rgba(255, 255, 255, 0.08);
}

.dock__btn--stop {
  color: rgba(244, 242, 237, 0.55);
}

.dock__btn--stop:hover {
  color: #fca5a5;
}

.dock__icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  opacity: 0.9;
}

.dock__text {
  white-space: nowrap;
}

[hidden] {
  display: none !important;
}