* {
  box-sizing: border-box;
}

:root {
  --navy: #081a33;
  --navy-2: #102a4d;
  --panel: rgba(255,255,255,0.08);
  --line: rgba(255,255,255,0.16);
  --white: #f8fbff;
  --muted: #b8c6d8;
  --gold: #e6c78b;
  --danger: #b53a48;
}

html {
  min-height: 100%;
  background: var(--navy);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--white);
  background:
    radial-gradient(circle at top right, rgba(230,199,139,0.16), transparent 30rem),
    linear-gradient(160deg, #061425, #0d2748 65%, #081a33);
}

button,
input {
  font: inherit;
}

button {
  touch-action: manipulation;
}

.app {
  width: min(760px, 100%);
  margin: 0 auto;
  padding: max(24px, env(safe-area-inset-top)) 18px calc(190px + env(safe-area-inset-bottom));
}

.hero {
  padding: 18px 4px 24px;
}

.eyebrow,
.label {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  color: var(--gold);
}

h1 {
  margin: 4px 0 2px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.7rem, 10vw, 4.7rem);
  font-weight: 500;
}

.subtitle {
  margin: 0;
  color: var(--muted);
}

.unlock-card,
.now-playing,
.track-card {
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(10px);
  border-radius: 22px;
  box-shadow: 0 18px 50px rgba(0,0,0,0.22);
}

.unlock-card {
  padding: 22px;
  margin-bottom: 18px;
}

.unlock-card h2 {
  margin: 0 0 6px;
}

.unlock-card p {
  color: var(--muted);
  line-height: 1.45;
}

.track-grid {
  display: grid;
  gap: 14px;
}

.track-card {
  padding: 20px;
  display: grid;
  gap: 18px;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.track-card.active {
  border-color: var(--gold);
  background: rgba(230,199,139,0.13);
  transform: translateY(-1px);
}

.track-card h2 {
  margin: 2px 0 4px;
  font-size: 1.45rem;
}

.track-card p {
  margin: 0;
  color: var(--muted);
}

.track-number {
  color: var(--gold);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
}

.btn {
  border: 0;
  border-radius: 16px;
  min-height: 58px;
  padding: 14px 18px;
  font-weight: 800;
  cursor: pointer;
  transition: transform 100ms ease, opacity 100ms ease;
}

.btn:active {
  transform: scale(0.985);
}

.btn:disabled {
  opacity: 0.42;
  cursor: not-allowed;
}

.btn-primary {
  width: 100%;
  background: var(--gold);
  color: #1b2230;
}

.btn-light {
  background: var(--white);
  color: var(--navy);
  font-size: 1rem;
}

.btn-secondary {
  background: #dce8f5;
  color: var(--navy);
}

.btn-accent {
  background: var(--gold);
  color: #1d2530;
}

.btn-danger {
  background: var(--danger);
  color: white;
}

.now-playing {
  margin-top: 18px;
  padding: 20px;
}

.status-row,
.time-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.status-row {
  justify-content: space-between;
}

#currentTitle {
  display: block;
  margin-top: 5px;
  font-size: 1.05rem;
}

.badge {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
  color: var(--muted);
  white-space: nowrap;
}

.time-row {
  margin: 22px 0;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
}

#progress {
  width: 100%;
  accent-color: var(--gold);
}

.inline-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.sticky-controls {
  position: fixed;
  z-index: 1000;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
  background: rgba(4, 15, 29, 0.96);
  border-top: 1px solid rgba(230,199,139,0.35);
  box-shadow: 0 -12px 40px rgba(0,0,0,0.42);
  backdrop-filter: blur(14px);
}

.sticky-inner {
  width: min(760px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(170px, 0.8fr);
  gap: 8px 12px;
  align-items: center;
}

.sticky-track {
  min-width: 0;
}

.sticky-track span {
  display: block;
  color: var(--gold);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.sticky-track strong {
  display: block;
  margin-top: 3px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.btn-fade {
  min-height: 66px;
  background: var(--gold);
  color: #171e29;
  border: 2px solid #fff1c9;
  font-size: 1.18rem;
  letter-spacing: 0.06em;
  box-shadow: 0 8px 24px rgba(230,199,139,0.25);
}

.sticky-inner small {
  grid-column: 1 / -1;
  color: var(--muted);
  text-align: center;
  font-size: 0.72rem;
}

.message {
  min-height: 1.5em;
  text-align: center;
  color: var(--gold);
}

footer {
  margin-top: 24px;
  text-align: center;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.5;
}

@media (min-width: 640px) {
  .track-card {
    grid-template-columns: 1fr 230px;
    align-items: center;
  }

  .inline-controls {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .sticky-inner {
    grid-template-columns: 1fr;
  }

  .sticky-track {
    display: none;
  }

  .btn-fade {
    width: 100%;
    min-height: 72px;
  }
}