:root {
  --cyan: #57f7ff;
  --purple: #9f5bff;
  --black: #010008;
  --navy: #080115;
  --text-main: #e6ecff;
  --text-secondary: #a6b1cc;
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glow: 0 0 22px rgba(87, 247, 255, 0.6), 0 0 38px rgba(159, 91, 255, 0.5);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Montserrat", "Orbitron", system-ui, -apple-system, sans-serif;
  background: radial-gradient(circle at 20% 20%, rgba(159, 91, 255, 0.18), transparent 30%),
    radial-gradient(circle at 80% 10%, rgba(87, 247, 255, 0.14), transparent 26%),
    radial-gradient(circle at 50% 80%, rgba(159, 91, 255, 0.22), transparent 32%),
    var(--black);
  color: var(--text-main);
  overflow: hidden;
}

.app-shell {
  position: relative;
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 16px;
  padding: 18px 24px 20px;
  z-index: 2;
}

.background {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.fx-grid {
  background-image: linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 120px 120px, 120px 120px;
  opacity: 0.25;
}

.fx-glow {
  background: radial-gradient(circle at 50% 50%, rgba(159, 91, 255, 0.12), transparent 45%),
    radial-gradient(circle at 20% 30%, rgba(87, 247, 255, 0.12), transparent 40%);
  filter: blur(40px);
  opacity: 0.8;
}

.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(18px);
  border-radius: 16px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  box-shadow: var(--glow);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand__logo {
  width: 64px;
  height: auto;
  border-radius: 12px;
  box-shadow: var(--glow);
}

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand__title {
  font-family: "Orbitron", "Montserrat", sans-serif;
  letter-spacing: 0.08em;
  font-size: 1.05rem;
}

.brand__tag {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: linear-gradient(90deg, rgba(87, 247, 255, 0.2), rgba(159, 91, 255, 0.18));
  color: var(--text-main);
  cursor: pointer;
  font-weight: 600;
  transition: transform 160ms ease, box-shadow 160ms ease, background 220ms ease;
  box-shadow: var(--glow);
}

.button .icon {
  display: grid;
  place-items: center;
}

.button.primary {
  background: linear-gradient(90deg, var(--cyan), var(--purple));
  color: #0a0418;
}

.button.ghost {
  background: var(--glass-bg);
  color: var(--text-main);
}

.button:hover {
  transform: translateY(-1px) scale(1.01);
  box-shadow: 0 0 22px rgba(87, 247, 255, 0.45), 0 0 30px rgba(159, 91, 255, 0.35);
}

.button:active {
  transform: translateY(0);
}

.select-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  color: var(--text-secondary);
}

.select-wrap label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.select-wrap select {
  background: transparent;
  border: none;
  color: var(--text-main);
  font-weight: 600;
  padding: 8px 10px;
  border-radius: 10px;
  appearance: none;
  background-image: linear-gradient(90deg, rgba(87, 247, 255, 0.35), rgba(159, 91, 255, 0.35));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.stage {
  position: relative;
  overflow: hidden;
  min-height: 60vh;
  display: grid;
}

#visualizerCanvas {
  width: 100%;
  height: 100%;
  display: block;
}

.loader {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 12px;
  background: linear-gradient(120deg, rgba(87, 247, 255, 0.08), rgba(159, 91, 255, 0.12));
  backdrop-filter: blur(10px);
  text-align: center;
  z-index: 4;
  transition: opacity 280ms ease, visibility 280ms ease;
}

.loader img {
  width: 160px;
  height: auto;
  animation: pulse 1.8s ease-in-out infinite;
  filter: drop-shadow(0 0 28px rgba(87, 247, 255, 0.6));
}

.loader p {
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}

.loader.hidden {
  opacity: 0;
  visibility: hidden;
}

@keyframes pulse {
  0% {
    transform: scale(0.96);
  }
  50% {
    transform: scale(1.04);
  }
  100% {
    transform: scale(0.96);
  }
}

.player {
  display: grid;
  grid-template-columns: 1.5fr 4fr 1fr;
  align-items: center;
  gap: 16px;
  padding: 12px 16px;
  box-shadow: var(--glow);
}

.track-meta .label {
  display: block;
  color: var(--text-secondary);
  font-size: 0.78rem;
}

.track-meta .value {
  font-weight: 600;
  color: var(--text-main);
}

.progress {
  width: 100%;
}

.progress__bar {
  width: 100%;
  height: 12px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  cursor: pointer;
}

.progress__fill {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--purple));
  box-shadow: var(--glow);
  transition: width 120ms linear;
}

.time {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
}

.divider {
  color: rgba(255, 255, 255, 0.4);
}

/* Floating ambient dots */
.ambient {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.ambient span {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--cyan), rgba(159, 91, 255, 0.8));
  box-shadow: var(--glow);
  opacity: 0.6;
  animation: drift 16s linear infinite;
}

.ambient span:nth-child(2) {
  width: 8px;
  height: 8px;
  animation-duration: 22s;
}

.ambient span:nth-child(3) {
  width: 10px;
  height: 10px;
  animation-duration: 18s;
}

@keyframes drift {
  0% {
    transform: translate(-10%, 10%) scale(0.8);
    opacity: 0.5;
  }
  50% {
    opacity: 0.9;
  }
  100% {
    transform: translate(110vw, -20vh) scale(1.2);
    opacity: 0.3;
  }
}

/* Responsive layout */
@media (max-width: 980px) {
  .topbar {
    flex-wrap: wrap;
    gap: 10px;
  }

  .actions {
    width: 100%;
    justify-content: flex-end;
    flex-wrap: wrap;
  }

  .player {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .time {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  body {
    padding: 0;
  }

  .app-shell {
    padding: 12px;
    gap: 12px;
  }

  .brand__logo {
    width: 48px;
  }

  .button {
    padding: 10px 12px;
  }

  .actions {
    justify-content: space-between;
  }

  .player {
    padding: 10px 12px;
  }

  .stage {
    min-height: 55vh;
  }
}