:root {
  --bg: #0f0f0f;
  --surface: #212121;
  --surface2: #181818;
  --text: #ffffff;
  --text-muted: #aaaaaa;
  --accent: #ff0000;
  --accent-soft: #cc0000;
  --border: #303030;
  --header-h: 56px;
  --nav-h: 56px;
  --mini-h: 64px;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --ease-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.2, 0.64, 1);
  --dur-fast: 0.2s;
  --dur-normal: 0.32s;
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  margin: 0;
  height: 100%;
  background: #000;
  font-family: Roboto, system-ui, sans-serif;
  color: var(--text);
}

body {
  display: flex;
  justify-content: center;
}

.app {
  position: relative;
  width: 100%;
  max-width: 480px;
  min-height: 100dvh;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.hidden {
  display: none !important;
}

.app-header {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.header-auth {
  flex-shrink: 0;
}

.btn-google,
.btn-google-settings {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-google {
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--surface);
  color: var(--text);
  font-size: 12px;
  font-weight: 500;
  padding: 6px 12px;
  cursor: pointer;
}

.btn-google .icon-google,
.btn-google-settings .icon-google {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.header-user {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
  background: transparent;
  color: var(--text);
  font-size: 12px;
  cursor: pointer;
  padding: 4px;
  border-radius: 20px;
  max-width: 140px;
}

.header-avatar {
  border-radius: 50%;
  object-fit: cover;
  background: var(--surface);
}

.header-user-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.app-logo {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
}

.screen {
  position: absolute;
  top: var(--header-h);
  left: 0;
  right: 0;
  bottom: calc(var(--nav-h) + var(--safe-bottom));
  overflow-y: auto;
  padding: 16px;
  padding-bottom: calc(var(--mini-h) + 16px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(10px);
  transition:
    opacity var(--dur-normal) var(--ease-out),
    transform var(--dur-normal) var(--ease-out),
    visibility var(--dur-normal);
  z-index: 1;
}

.screen-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
  z-index: 2;
}

.screen-title {
  margin: 0 0 16px;
  font-size: 20px;
}

.screen-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.screen-toolbar h2 {
  margin: 0;
  font-size: 20px;
}

.mode-segment {
  display: flex;
  background: var(--surface);
  border-radius: 24px;
  padding: 4px;
  margin-bottom: 20px;
  position: relative;
}

.mode-segment-btn {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--text-muted);
  padding: 10px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  position: relative;
  z-index: 1;
  transition: color var(--dur-fast) var(--ease-out);
}

.mode-segment-indicator {
  position: absolute;
  top: 4px;
  bottom: 4px;
  left: 4px;
  width: calc(50% - 4px);
  border-radius: 20px;
  background: var(--text);
  transition: transform var(--dur-normal) var(--ease-spring);
  z-index: 0;
}

.add-segment {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.add-segment-btn {
  flex: 1;
  border: none;
  background: var(--surface);
  color: var(--text-muted);
  padding: 10px 12px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}

.add-segment-btn.active {
  background: var(--text);
  color: var(--bg);
}

.library-segment {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.library-segment-btn {
  flex: 1;
  border: none;
  background: var(--surface);
  color: var(--text-muted);
  padding: 10px 12px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}

.library-segment-btn.active {
  background: var(--text);
  color: var(--bg);
}

.history-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
  flex-shrink: 0;
}

.history-actions .btn-text {
  font-size: 12px;
  padding: 2px 0;
}

.settings-note {
  margin: 8px 0 0;
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.45;
}

.add-panel {
  min-height: 0;
}

.search-hint {
  margin: 0 0 12px;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.45;
}

.search-hint-warn {
  color: #ffb4a2;
}

.search-results {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: calc(100dvh - 360px);
  overflow-y: auto;
}

.search-empty {
  padding: 24px 12px;
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
}

.search-result {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px;
  background: var(--surface);
  border-radius: 12px;
}

.search-thumb {
  width: 72px;
  height: 54px;
  flex-shrink: 0;
  border-radius: 8px;
  background: var(--surface2) center/cover no-repeat;
}

.search-meta {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.search-title {
  font-size: 14px;
  font-weight: 500;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.search-artist {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.search-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  flex-shrink: 0;
}

.search-actions .btn-text {
  font-size: 12px;
  padding: 2px 0;
}

.mode-segment-indicator.mode-video {
  transform: translateX(100%);
}

.mode-segment-btn.active {
  color: var(--bg);
  background: transparent;
}

.home-panels {
  display: grid;
  grid-template: 1fr / 1fr;
  min-height: 0;
}

.home-panels > .home-music.is-active {
  min-height: min(280px, 80vw);
}

.player-chrome {
  margin-top: 8px;
}

.home-panels > .home-music,
.home-panels > .home-video {
  grid-area: 1 / 1;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: scale(0.97);
  transition:
    opacity var(--dur-normal) var(--ease-out),
    transform var(--dur-normal) var(--ease-out),
    visibility var(--dur-normal);
}

.home-panels > .home-music.is-active,
.home-panels > .home-video.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: scale(1);
}

.album-art {
  width: min(280px, 80vw);
  aspect-ratio: 1;
  margin: 0 auto 24px;
  border-radius: 12px;
  background: var(--surface) center/cover no-repeat;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  transition: transform var(--dur-normal) var(--ease-out), box-shadow var(--dur-normal) var(--ease-out);
}

.album-art.has-track {
  transform: scale(1);
}

.track-title {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 700;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.track-artist {
  margin: 0 0 20px;
  font-size: 14px;
  color: var(--text-muted);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.progress-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.progress-bar {
  flex: 1;
  height: 4px;
  background: var(--surface);
  border-radius: 2px;
  overflow: hidden;
  cursor: pointer;
}

.progress-bar span,
#musicFill {
  transition: width 0.15s linear;
}

.progress-bar span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--accent);
}

.controls-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.ctrl-btn {
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  transition: transform var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
}

.ctrl-btn:active {
  transform: scale(0.92);
}

.ctrl-play {
  width: 56px;
  height: 56px;
  background: var(--text);
  color: var(--bg);
  transition: transform var(--dur-fast) var(--ease-spring), background var(--dur-fast) var(--ease-out);
}

.ctrl-play:active {
  transform: scale(0.94);
}

.icon {
  width: 24px;
  height: 24px;
  fill: currentColor;
  flex-shrink: 0;
}

.icon-sm {
  width: 20px;
  height: 20px;
}

.ctrl-play .icon {
  width: 28px;
  height: 28px;
}

.ctrl-play .icon-pause,
.mini-play .icon-pause,
#btnRepeat .icon-repeat-one {
  display: none;
}

.ctrl-play.is-playing .icon-play,
.mini-play.is-playing .icon-play {
  display: none;
}

.ctrl-play.is-playing .icon-pause,
.mini-play.is-playing .icon-pause {
  display: block;
}

#btnRepeat.repeat-one .icon-repeat-all {
  display: none;
}

#btnRepeat.repeat-one .icon-repeat-one {
  display: block;
}

.ctrl-btn.active {
  color: var(--accent);
}

.video-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  background: #000;
  border-radius: 12px;
  overflow: hidden;
  transition: border-radius var(--dur-normal) var(--ease-out);
}

.video-stage iframe,
.video-stage > div {
  width: 100% !important;
  height: 100% !important;
}

.playlist-cards {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.playlist-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  background: var(--surface);
  border-radius: 12px;
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
}

.playlist-card:active {
  transform: scale(0.98);
}

.playlist-card.active {
  outline: 2px solid var(--accent);
}

.playlist-card-name {
  font-weight: 500;
}

.playlist-card-meta {
  font-size: 12px;
  color: var(--text-muted);
}

.playlist-card-actions {
  display: flex;
  gap: 4px;
}

.btn-icon {
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.btn-icon:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
}

.btn-back {
  border: none;
  background: transparent;
  color: var(--text);
  font-size: 14px;
  cursor: pointer;
  margin-bottom: 12px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.library-detail {
  margin-top: 8px;
}

.search-input,
.field-input,
.field-select,
.field-textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface2);
  color: var(--text);
  font-size: 14px;
  margin-bottom: 12px;
}

.field-textarea {
  min-height: 120px;
  resize: vertical;
}

.field-label {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.field-row {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.field-row .field-input {
  margin-bottom: 0;
  flex: 1;
}

.detail-actions {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.track-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.track-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
}

.track-item.cur {
  color: var(--accent);
}

.track-thumb {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  background: var(--surface) center/cover no-repeat;
  flex-shrink: 0;
}

.track-info {
  flex: 1;
  min-width: 0;
}

.track-info-title {
  font-size: 14px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.track-info-artist {
  font-size: 12px;
  color: var(--text-muted);
}

.btn-primary,
.btn-secondary,
.btn-text,
.btn-block {
  border: none;
  border-radius: 20px;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: var(--text);
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
}

.btn-text {
  background: transparent;
  color: var(--accent);
}

.btn-block {
  width: 100%;
}

.settings-card {
  background: var(--surface);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 12px;
}

.settings-label {
  margin: 0 0 4px;
  font-size: 12px;
  color: var(--text-muted);
}

.settings-value {
  margin: 0 0 12px;
  font-size: 14px;
}

.mini-player {
  position: absolute;
  left: 0;
  right: 0;
  bottom: calc(var(--nav-h) + var(--safe-bottom));
  height: var(--mini-h);
  background: var(--surface2);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 8px 0 12px;
  gap: 8px;
  z-index: 10;
  transform: translateY(100%);
  opacity: 0;
  pointer-events: none;
  transition:
    transform var(--dur-normal) var(--ease-out),
    opacity var(--dur-normal) var(--ease-out);
}

.mini-player.is-visible {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.mini-player-main {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  border: none;
  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;
  min-width: 0;
  padding: 0;
}

.mini-art {
  width: 40px;
  height: 40px;
  border-radius: 6px;
  background: var(--surface) center/cover no-repeat;
  flex-shrink: 0;
}

.mini-meta {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.mini-title {
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mini-artist {
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mini-play {
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.bottom-nav {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: calc(var(--nav-h) + var(--safe-bottom));
  padding-bottom: var(--safe-bottom);
  display: flex;
  background: var(--surface2);
  border-top: 1px solid var(--border);
  z-index: 20;
}

.nav-btn {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  font-size: 10px;
  cursor: pointer;
  transition: color var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}

.nav-btn:active {
  transform: scale(0.94);
}

.nav-btn.active {
  color: var(--accent);
}

.nav-btn .icon {
  width: 22px;
  height: 22px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(var(--nav-h) + var(--mini-h) + 24px);
  transform: translateX(-50%) translateY(12px);
  background: rgba(30, 30, 30, 0.95);
  color: var(--text);
  padding: 10px 18px;
  border-radius: 24px;
  font-size: 13px;
  z-index: 100;
  max-width: 90%;
  opacity: 0;
  pointer-events: none;
  transition:
    opacity var(--dur-normal) var(--ease-out),
    transform var(--dur-normal) var(--ease-out);
}

.toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

#ytMount.yt-player-mount {
  width: 100%;
  height: 100%;
}

#ytMount.music-mode {
  position: fixed;
  left: 0;
  top: 0;
  width: var(--player-w, 100%);
  height: var(--player-h, 56.25vw);
  max-width: 100%;
  opacity: 0.001;
  pointer-events: none;
  z-index: -1;
  visibility: visible !important;
  clip-path: inset(50%);
  contain: strict;
}

#ytMount.video-mode {
  position: relative;
  width: 100%;
  height: 100%;
  opacity: 1;
  pointer-events: auto;
  z-index: 1;
  contain: layout style;
}

.video-stage iframe,
.video-stage > div,
#ytMount iframe {
  width: 100% !important;
  height: 100% !important;
  border: 0;
  display: block;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}