@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #070b18;
  --panel: rgba(8, 13, 29, .78);
  --line: rgba(177, 194, 233, .13);
  --text: #eef2ff;
  --muted: rgba(238, 242, 255, .58);
  --dim: rgba(238, 242, 255, .28);
  --accent: #6fa9e8;
  --accent-strong: #9fc8f5;
  --warm: #e5cf9f;
  --shadow: 0 30px 90px rgba(0, 0, 0, .42);
  --app-nav-bg: rgba(238, 242, 255, .045);
  --app-nav-border: rgba(177, 194, 233, .14);
  --app-nav-text: rgba(238, 242, 255, .68);
  --app-nav-hover-border: rgba(111, 169, 232, .42);
  --app-nav-hover-text: var(--text);
  --app-nav-active-bg: linear-gradient(135deg, rgba(111, 169, 232, .24), rgba(229, 207, 159, .16));
  --app-nav-active-text: var(--text);
  --app-nav-active-shadow: 0 12px 30px rgba(0, 0, 0, .22);
}

html { min-height: 100%; }

body {
  min-height: 100%;
  background:
    radial-gradient(circle at 18% 10%, rgba(65, 104, 164, .18), transparent 25%),
    radial-gradient(circle at 86% 18%, rgba(123, 97, 74, .12), transparent 22%),
    linear-gradient(180deg, #0b1022 0%, #080d1d 54%, var(--bg) 100%);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.55;
}

button,
a {
  font: inherit;
}

button {
  cursor: pointer;
}

.lullaby-page {
  width: min(960px, 100%);
  min-height: 100vh;
  margin: 0 auto;
  padding: 22px clamp(16px, 4vw, 28px) 36px;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
}

#app-title {
  min-width: 0;
  overflow: hidden;
  font-size: 22px;
  font-weight: 900;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.header-tools {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex: 0 0 auto;
  gap: 10px;
  min-width: 0;
}

.language-select {
  min-height: 34px;
  border: 1px solid var(--app-nav-border);
  border-radius: 999px;
  background: rgba(12, 19, 42, .92);
  color: var(--text);
  font-size: 13px;
  font-weight: 900;
  padding: 7px 12px;
}

.language-select option {
  background: #101936;
  color: var(--text);
}

.language-select:focus {
  border-color: var(--app-nav-hover-border);
  outline: none;
}

.player-panel {
  display: grid;
  grid-template-columns: 156px minmax(0, 1fr);
  gap: clamp(20px, 5vw, 42px);
  align-items: center;
  margin-top: 28px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: linear-gradient(135deg, rgba(16, 25, 52, .92), rgba(8, 13, 29, .9));
  box-shadow: var(--shadow);
  padding: clamp(22px, 5vw, 42px);
}

.ring-wrap {
  position: relative;
  width: 144px;
  height: 144px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--text);
}

.ring-svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.ring-bg,
.ring-progress {
  fill: none;
  stroke-width: 6;
}

.ring-bg {
  stroke: rgba(177, 194, 233, .12);
}

.ring-progress {
  stroke: var(--accent);
  stroke-linecap: round;
  transform: rotate(-90deg);
  transform-origin: center;
  transition: stroke-dashoffset 1s linear;
}

.ring-wrap.is-playing .ring-progress {
  animation: ringPulse 3.2s ease-in-out infinite;
  filter: drop-shadow(0 0 8px rgba(111, 169, 232, .38));
}

.ring-center {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 4px;
  pointer-events: none;
}

.ring-icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(238, 242, 255, .07);
  color: var(--warm);
  font-size: 18px;
  font-weight: 900;
}

.ring-wrap.is-playing .ring-icon {
  animation: iconFloat 3.4s ease-in-out infinite;
}

.ring-time {
  color: rgba(238, 242, 255, .78);
  font-size: 14px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

@keyframes ringPulse {
  0%, 100% {
    opacity: .58;
    filter: drop-shadow(0 0 5px rgba(111, 169, 232, .22));
  }

  50% {
    opacity: 1;
    filter: drop-shadow(0 0 14px rgba(111, 169, 232, .5));
  }
}

@keyframes iconFloat {
  0%, 100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-7px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .ring-wrap.is-playing .ring-progress,
  .ring-wrap.is-playing .ring-icon {
    animation: none;
  }
}

.now-info {
  min-width: 0;
}

.eyebrow {
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 900;
  margin-bottom: 10px;
}

h1 {
  color: var(--text);
  font-size: clamp(28px, 5vw, 52px);
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1.04;
}

.now-info p:not(.eyebrow) {
  max-width: 620px;
  color: var(--muted);
  margin-top: 14px;
  font-size: 15px;
}

.player-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.primary-action,
.secondary-action {
  min-height: 42px;
  border-radius: 999px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 900;
}

.primary-action {
  border: 1px solid rgba(111, 169, 232, .42);
  background: rgba(111, 169, 232, .13);
  color: var(--text);
}

.secondary-action {
  border: 1px solid var(--line);
  background: rgba(238,242,255,.035);
  color: var(--muted);
}

.timer-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  padding: 14px 16px;
}

.timer-panel > span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
}

.timer-options {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.timer-btn,
.filter-tab {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
  padding: 8px 12px;
}

.timer-btn.active,
.filter-tab.active {
  border-color: rgba(111, 169, 232, .46);
  background: rgba(111, 169, 232, .1);
  color: var(--text);
}

.library-panel {
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--panel);
  overflow: hidden;
}

.filter-tabs {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--line);
  padding: 14px 16px;
}

.track-list {
  padding: 8px 0 0;
}

.category-title {
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0;
  padding: 18px 18px 8px;
}

.track-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 42px;
  align-items: stretch;
  border-top: 1px solid rgba(177, 194, 233, .09);
}

.track-main {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  min-width: 0;
  border: 0;
  background: transparent;
  color: inherit;
  padding: 13px 16px;
  text-align: left;
}

.track-main:hover,
.favorite-btn:hover {
  background: rgba(238,242,255,.045);
}

.track-item.selected {
  background: rgba(111, 169, 232, .075);
}

.track-icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 12px;
  background: rgba(238,242,255,.055);
  color: var(--warm);
  font-size: 13px;
  font-weight: 900;
}

.track-info {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.track-name {
  overflow: hidden;
  color: var(--text);
  font-size: 15px;
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.track-meta {
  overflow: hidden;
  color: var(--dim);
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.track-state {
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 900;
}

.favorite-btn {
  border: 0;
  border-left: 1px solid rgba(177, 194, 233, .09);
  background: transparent;
  color: rgba(238, 242, 255, .2);
  font-size: 18px;
}

.favorite-btn.active {
  color: var(--warm);
}

.empty-state {
  color: var(--dim);
  padding: 42px 20px;
  text-align: center;
}

.license-notice {
  border-top: 1px solid var(--line);
  color: var(--dim);
  font-size: 11px;
  line-height: 1.6;
  padding: 16px;
  text-align: center;
}

@media (max-width: 720px) {
  .app-header {
    align-items: center;
    flex-direction: row;
    gap: 10px;
  }

  .header-tools {
    align-items: center;
    flex-direction: row;
    flex-wrap: nowrap;
    overflow-x: auto;
    width: auto;
  }

  .header-tools .app-nav {
    flex: 0 0 auto;
    width: auto;
  }

  .language-select {
    flex: 0 0 auto;
  }

  .player-panel {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }

  .now-info p:not(.eyebrow) {
    margin-left: auto;
    margin-right: auto;
  }

  .player-actions {
    justify-content: center;
  }

  .timer-panel {
    align-items: flex-start;
    flex-direction: column;
  }

  .timer-options {
    justify-content: flex-start;
  }

  .track-main {
    grid-template-columns: 36px minmax(0, 1fr);
  }

  .track-state {
    display: none;
  }
}

@media (max-width: 460px) {
  .lullaby-page {
    padding-left: 12px;
    padding-right: 12px;
  }

  .player-panel {
    border-radius: 22px;
    padding: 20px 14px;
  }

  .ring-wrap {
    width: 128px;
    height: 128px;
  }

  .track-name,
  .track-meta {
    white-space: normal;
  }
}