:root {
  --mv-bg: #020713;
  --mv-border: rgba(136, 198, 255, 0.3);
  --mv-text: #eaf7ff;
  --mv-muted: rgba(201, 227, 255, 0.72);
}

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

body {
  margin: 0;
  min-height: 100dvh;
  font-family: "Poppins", "Segoe UI", sans-serif;
  color: var(--mv-text);
  background:
    radial-gradient(1100px 680px at 72% 120%, rgba(132, 85, 255, 0.18), transparent),
    radial-gradient(780px 480px at 20% -10%, rgba(76, 188, 255, 0.14), transparent),
    var(--mv-bg);
}

.music-night-page {
  max-width: 1320px;
  margin: 0 auto;
  padding: 1rem;
}

.back-link {
  display: inline-flex;
  text-decoration: none;
  color: var(--mv-text);
  border-radius: 999px;
  border: 1px solid var(--mv-border);
  background: rgba(8, 22, 45, 0.68);
  padding: 0.45rem 0.85rem;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.back-link:hover {
  transform: translateY(-1px);
  border-color: rgba(136, 198, 255, 0.56);
}

.night-stage {
  position: relative;
  margin-top: 0.9rem;
  min-height: calc(100dvh - 5.8rem);
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid var(--mv-border);
  background:
    linear-gradient(180deg, rgba(8, 21, 48, 0.96) 0%, rgba(5, 13, 31, 0.98) 58%, rgba(3, 9, 20, 1) 100%);
}

.photo-background {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(180deg, rgba(5, 10, 22, 0.12), rgba(3, 8, 18, 0.58)),
    url('../assets/moon_rooftop_kids.png');
  background-size: cover;
  background-position: center;
  filter: saturate(1.03) contrast(1.04);
}

.calm-particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

.player-dock {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: min(900px, calc(100% - 2rem));
  bottom: 1rem;
  border-radius: 16px;
  border: 1px solid rgba(136, 198, 255, 0.38);
  background: rgba(4, 13, 30, 0.7);
  backdrop-filter: blur(10px);
  z-index: 2;
  padding: 0.62rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.player-top-row,
.player-controls {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.player-controls {
  flex-wrap: wrap;
}

.track-name {
  min-width: 0;
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 0.84rem;
}

.player-btn {
  border: 1px solid rgba(136, 198, 255, 0.46);
  border-radius: 10px;
  background: rgba(10, 26, 50, 0.84);
  color: var(--mv-text);
  font-size: 0.78rem;
  padding: 0.34rem 0.62rem;
  cursor: pointer;
}

.player-btn.ghost {
  background: rgba(8, 21, 44, 0.35);
}

#timeLabel {
  margin-left: auto;
  color: var(--mv-muted);
  font-size: 0.72rem;
}

#progressRange,
#audioPlayer {
  width: 100%;
}

.form-status {
  margin: 0;
  min-height: 1rem;
  font-size: 0.72rem;
  color: var(--mv-muted);
}

.form-status.is-error {
  color: #ff9dad;
}

.track-panel {
  border-radius: 12px;
  border: 1px solid rgba(136, 198, 255, 0.25);
  background: rgba(6, 17, 38, 0.78);
  max-height: 220px;
  overflow: auto;
}

.track-list {
  margin: 0;
  padding: 0.4rem;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.track-item {
  display: flex;
}

.track-main-btn {
  width: 100%;
  border: 1px solid rgba(136, 198, 255, 0.2);
  border-radius: 10px;
  padding: 0.48rem 0.58rem;
  text-align: left;
  background: rgba(8, 21, 44, 0.78);
  color: inherit;
  cursor: pointer;
}

.track-item.is-active .track-main-btn {
  border-color: rgba(148, 240, 255, 0.72);
}

.track-title {
  display: block;
  font-size: 0.86rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.track-meta {
  display: block;
  margin-top: 0.12rem;
  color: var(--mv-muted);
  font-size: 0.72rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.track-empty {
  border-radius: 10px;
  border: 1px dashed rgba(136, 198, 255, 0.3);
  padding: 0.7rem;
  color: var(--mv-muted);
  font-size: 0.8rem;
}

@media (max-width: 680px) {
  .music-night-page {
    padding: 0.65rem;
  }

  .night-stage {
    min-height: calc(100dvh - 4.7rem);
  }

  .player-dock {
    left: 50%;
    width: calc(100% - 1.1rem);
    bottom: 0.55rem;
    padding: 0.52rem;
    border-radius: 14px;
  }

  .track-name {
    font-size: 0.78rem;
  }

  .player-btn {
    font-size: 0.74rem;
    padding: 0.3rem 0.54rem;
  }

  #timeLabel {
    margin-left: auto;
    width: auto;
    font-size: 0.68rem;
  }

  .track-panel {
    max-height: 160px;
  }
}

@media (max-width: 420px) {
  .player-top-row {
    gap: 0.3rem;
  }

  .player-controls {
    gap: 0.3rem;
  }

  .player-dock {
    padding: 0.48rem;
  }
}