:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --surface2: #243044;
  --text: #e8edf4;
  --muted: #8b9cb3;
  --accent: #3d8bfd;
  --accent-hover: #5ca0ff;
  --success: #3dd68c;
  --danger: #f07178;
  --warn: #e6b450;
  --radius: 10px;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

.container { max-width: 1100px; margin: 0 auto; padding: 1rem; }

/* 登录页 */
.page-login {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(145deg, #0f1419 0%, #1a2a42 100%);
}

.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 2rem;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 8px 32px rgba(0,0,0,.4);
}

.card h1 { font-size: 1.35rem; margin-bottom: .25rem; }
.card .subtitle { color: var(--muted); font-size: .9rem; margin-bottom: 1.5rem; }

.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-size: .85rem; color: var(--muted); margin-bottom: .35rem; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: .65rem .85rem;
  border: 1px solid var(--surface2);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
}
.form-group input:focus,
.form-group select:focus { outline: none; border-color: var(--accent); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .65rem 1.25rem;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  transition: background .15s, transform .1s;
}
.btn:active { transform: scale(.98); }
.btn-primary { background: var(--accent); color: #fff; width: 100%; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { background: var(--surface2); color: var(--text); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: .4rem .75rem; font-size: .85rem; }
.btn-success { background: var(--success); color: #0f1419; }

.alert {
  padding: .75rem 1rem;
  border-radius: 8px;
  margin-bottom: 1rem;
  font-size: .9rem;
}
.alert-error { background: rgba(240,113,120,.15); color: var(--danger); }
.alert-success { background: rgba(61,214,140,.15); color: var(--success); }
.alert-info { background: rgba(61,139,253,.15); color: var(--accent); }

/* 管理后台 */
.admin-layout { display: flex; min-height: 100vh; }
.admin-nav {
  width: 220px;
  background: var(--surface);
  padding: 1.25rem 0;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
}
.admin-nav .brand {
  padding: 0 1.25rem 1rem;
  font-weight: 700;
  font-size: 1rem;
  border-bottom: 1px solid var(--surface2);
  margin-bottom: .5rem;
}
.admin-nav ul { list-style: none; flex: 1; }
.admin-nav li a {
  display: block;
  padding: .65rem 1.25rem;
  color: var(--muted);
}
.admin-nav li a:hover,
.admin-nav li a.active { background: var(--surface2); color: var(--text); }
.admin-nav .nav-user {
  padding: 1rem 1.25rem;
  font-size: .8rem;
  color: var(--muted);
  border-top: 1px solid var(--surface2);
}
.admin-nav .nav-user a { display: inline-block; margin-right: .5rem; font-size: .8rem; }

.admin-main { flex: 1; padding: 1.5rem; overflow: auto; }
.admin-main h2 { margin-bottom: 1rem; font-size: 1.25rem; }

.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9rem;
}
th, td {
  padding: .65rem .75rem;
  text-align: left;
  border-bottom: 1px solid var(--surface2);
}
th { color: var(--muted); font-weight: 600; }
.badge {
  display: inline-block;
  padding: .15rem .5rem;
  border-radius: 4px;
  font-size: .75rem;
}
.badge-on { background: rgba(61,214,140,.2); color: var(--success); }
.badge-off { background: rgba(139,156,179,.2); color: var(--muted); }

.toolbar { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1rem; align-items: center; }
.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  z-index: 100;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.modal-backdrop.show { display: flex; }
.modal {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.5rem;
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
}
.modal h3 { margin-bottom: 1rem; }
.modal-actions { display: flex; gap: .5rem; justify-content: flex-end; margin-top: 1rem; }

/* 用户遥控 */
.page-control { padding-bottom: 2rem; }
.control-header {
  background: var(--surface);
  padding: 1rem;
  margin-bottom: 1rem;
  border-radius: var(--radius);
}
.control-header .now-playing-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin: .5rem 0 .35rem;
  color: var(--accent);
  min-height: 1.4em;
}
.control-header .player-status {
  font-size: .9rem;
  color: var(--muted);
  margin-bottom: .75rem;
}
.control-header .progress-time {
  display: flex;
  justify-content: space-between;
  font-size: .75rem;
  color: var(--muted);
  margin-top: .35rem;
}
.control-header .status-dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  margin-right: .35rem;
}
.status-dot.online { background: var(--success); }
.status-dot.offline { background: var(--muted); }

.track-list { margin-bottom: 1rem; }
.track-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .75rem 1rem;
  background: var(--surface);
  border-radius: 8px;
  margin-bottom: .5rem;
  cursor: pointer;
  border: 2px solid transparent;
}
.track-item:hover { border-color: var(--surface2); }
.track-item.active { border-color: var(--accent); }
.track-item .type-tag {
  font-size: .7rem;
  padding: .1rem .4rem;
  border-radius: 4px;
  background: var(--surface2);
  color: var(--muted);
  margin-left: .5rem;
}

.control-pad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .75rem;
  max-width: 400px;
  margin: 0 auto;
}
.control-pad .btn { min-height: 52px; font-size: .95rem; }
.control-pad .btn-play { grid-column: 2; font-size: 1.1rem; }

.bind-box {
  text-align: center;
  padding: 2rem 1rem;
}
.bind-box input { max-width: 280px; margin: 0 auto 1rem; }

/* 播放端（旧版占位，主要样式见下方 v2） */
.player-screen {
  text-align: center;
  max-width: 600px;
  width: 100%;
}
.player-screen h1 { font-size: 1.5rem; margin-bottom: .5rem; }
.player-screen .now-playing {
  font-size: 1.1rem;
  color: var(--accent);
  margin: 1rem 0;
  min-height: 1.5em;
}
.player-screen .state-label { color: var(--muted); font-size: .9rem; }
.player-screen .device-code-input {
  max-width: 200px;
  margin: 1rem auto;
  text-align: center;
  letter-spacing: .15em;
  text-transform: uppercase;
}
.progress-bar {
  height: 6px;
  background: var(--surface2);
  border-radius: 3px;
  margin: 1.5rem 0;
  overflow: hidden;
}
.progress-bar .fill {
  height: 100%;
  background: var(--accent);
  width: 0%;
  transition: width .3s linear;
}

/* 首页入口 */
.page-home { padding: 2rem 1rem; text-align: center; }
.page-home h1 { margin-bottom: .5rem; }
.page-home .links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-top: 2rem;
}
.page-home .link-card {
  background: var(--surface);
  padding: 1.5rem 2rem;
  border-radius: var(--radius);
  min-width: 160px;
  transition: transform .15s;
}
.page-home .link-card:hover { transform: translateY(-2px); color: var(--text); }
.page-home .link-card strong { display: block; margin-bottom: .25rem; }
.page-home .link-card span { font-size: .85rem; color: var(--muted); }

/* 用户端 - 区域方格 */
.page-control-simple { background: linear-gradient(160deg, #0c1018 0%, #152238 100%); min-height: 100vh; }
.control-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  padding: .85rem 1rem;
  background: rgba(12, 16, 24, .92);
  border-bottom: 1px solid var(--surface2);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
}
.control-topbar-brand { font-size: .95rem; font-weight: 600; color: var(--text); }
.control-topbar-user { display: flex; align-items: center; gap: .65rem; flex-shrink: 0; }
.control-user-badge {
  display: inline-flex;
  align-items: center;
  max-width: 140px;
  padding: .25rem .65rem;
  border-radius: 20px;
  font-size: .8rem;
  font-weight: 500;
  color: var(--accent);
  background: rgba(61, 139, 253, .15);
  border: 1px solid rgba(61, 139, 253, .35);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.control-logout-link { font-size: .8rem; color: var(--muted); text-decoration: none; white-space: nowrap; }
.control-logout-link:hover { color: var(--text); }
.control-simple-wrap { max-width: 480px; padding: 1.25rem 1rem 2rem; }
.areas-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .75rem;
  margin-bottom: 1.5rem;
}
.area-tile {
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .35rem;
  padding: .5rem;
  border: 2px solid var(--surface2);
  border-radius: 12px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  position: relative;
  transition: border-color .15s, transform .1s, box-shadow .15s;
}
.area-tile:hover { border-color: var(--accent); transform: translateY(-2px); }
.area-tile.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(61,139,253,.35);
  background: linear-gradient(145deg, #1e2d4a, #1a2332);
}
.area-tile .dot {
  position: absolute; top: 8px; right: 8px;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--muted);
}
.area-tile .dot.online { background: var(--success); }
.area-tile-name { font-size: .85rem; font-weight: 600; text-align: center; line-height: 1.2; }
.area-tile-code { font-size: .65rem; color: var(--muted); letter-spacing: .05em; }
.areas-empty { text-align: center; color: var(--muted); padding: 2rem 0; }
.control-bar {
  background: var(--surface);
  border-radius: 14px;
  padding: 1.25rem 1rem;
  margin-bottom: 1rem;
}
.control-selected-label { text-align: center; margin-bottom: 1rem; font-size: .95rem; }
.area-status-tag {
  display: inline-block;
  font-size: .7rem;
  padding: .15rem .45rem;
  border-radius: 4px;
  margin-left: .35rem;
  vertical-align: middle;
}
.area-status-tag.online { background: rgba(61,214,140,.2); color: var(--success); }
.area-status-tag.offline { background: rgba(139,156,179,.2); color: var(--muted); }
.control-bar-buttons {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: .65rem;
}
.control-bar-buttons .btn { min-height: 48px; font-size: 1rem; }
.control-bar-buttons .btn-primary { grid-column: span 2; }
.control-logout { text-align: center; font-size: .85rem; }
.checkbox-grid {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1rem;
  max-height: 160px;
  overflow-y: auto;
}
.checkbox-item {
  display: flex;
  align-items: center;
  gap: .35rem;
  font-size: .9rem;
  cursor: pointer;
}
.checkbox-item input { width: auto; }
.form-hint { line-height: 1.4; }

/* 播放端 v2 */
body.page-player {
  overflow-x: hidden;
  width: 100%;
  max-width: 100%;
}

.page-player {
  min-height: 100vh;
  min-height: 100dvh;
  width: 100%;
  max-width: 100vw;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: max(1rem, env(safe-area-inset-top)) max(.75rem, env(safe-area-inset-right)) max(1rem, env(safe-area-inset-bottom)) max(.75rem, env(safe-area-inset-left));
  background: #060a10;
  overflow-x: hidden;
  overflow-y: auto;
  box-sizing: border-box;
}

.player-app {
  position: relative;
  width: 100%;
  max-width: min(440px, 100%);
  min-width: 0;
  overflow: hidden;
}

.player-glow {
  position: absolute;
  inset: -15% -8%;
  background: radial-gradient(circle at 50% 30%, rgba(61,139,253,.25), transparent 55%),
              radial-gradient(circle at 80% 80%, rgba(61,214,140,.12), transparent 40%);
  pointer-events: none;
  animation: glowShift 8s ease-in-out infinite alternate;
  overflow: hidden;
}
@keyframes glowShift {
  from { transform: translateY(0); opacity: .8; }
  to { transform: translateY(-8%); opacity: 1; }
}
.player-card {
  position: relative;
  width: 100%;
  background: linear-gradient(165deg, rgba(26,35,50,.95), rgba(15,20,28,.98));
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 20px;
  padding: 1.5rem 1.15rem;
  box-shadow: 0 24px 64px rgba(0,0,0,.5);
  overflow: hidden;
  box-sizing: border-box;
}
.player-header { display: flex; gap: 1rem; align-items: center; margin-bottom: 1.75rem; }
.player-logo {
  width: 52px; height: 52px; border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), #2a5fad);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; font-weight: 800; color: #fff;
}
.player-header-text { flex: 1; min-width: 0; }
.player-title-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .5rem .65rem;
  font-size: 1.2rem;
  margin-bottom: .2rem;
  line-height: 1.3;
}
.player-sub { font-size: .8rem; color: var(--muted); margin: 0; }
.live-badge-inline {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  font-size: .7rem;
  font-weight: 600;
  color: var(--success);
  background: rgba(61,214,140,.15);
  padding: .2rem .55rem;
  border-radius: 20px;
  vertical-align: middle;
}
.live-badge-inline .pulse {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--success);
  animation: pulse 1.5s infinite;
}
.audio-waveform {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 4px;
  height: 48px;
  margin: 1rem 0 .75rem;
  opacity: .35;
  transition: opacity .3s;
}
.audio-waveform.is-playing {
  opacity: 1;
}
.audio-waveform span {
  display: block;
  width: 4px;
  height: 8px;
  background: linear-gradient(180deg, var(--accent), #5ca0ff);
  border-radius: 3px;
  animation: waveBar 1.2s ease-in-out infinite;
}
.audio-waveform.is-playing span {
  animation-play-state: running;
}
.audio-waveform:not(.is-playing) span {
  animation-play-state: paused;
  height: 6px;
}
.audio-waveform span:nth-child(1) { animation-delay: 0s; }
.audio-waveform span:nth-child(2) { animation-delay: .05s; }
.audio-waveform span:nth-child(3) { animation-delay: .1s; }
.audio-waveform span:nth-child(4) { animation-delay: .15s; }
.audio-waveform span:nth-child(5) { animation-delay: .2s; }
.audio-waveform span:nth-child(6) { animation-delay: .25s; }
.audio-waveform span:nth-child(7) { animation-delay: .3s; }
.audio-waveform span:nth-child(8) { animation-delay: .35s; }
.audio-waveform span:nth-child(9) { animation-delay: .4s; }
.audio-waveform span:nth-child(10) { animation-delay: .45s; }
.audio-waveform span:nth-child(11) { animation-delay: .5s; }
.audio-waveform span:nth-child(12) { animation-delay: .55s; }
.audio-waveform span:nth-child(13) { animation-delay: .6s; }
.audio-waveform span:nth-child(14) { animation-delay: .65s; }
.audio-waveform span:nth-child(15) { animation-delay: .7s; }
@keyframes waveBar {
  0%, 100% { height: 8px; opacity: .5; }
  50% { height: 36px; opacity: 1; }
}
.player-header h1 { font-size: 1.2rem; margin-bottom: .2rem; }
.player-header p { font-size: .8rem; color: var(--muted); }
.field-label { display: block; font-size: .8rem; color: var(--muted); margin-bottom: .4rem; }
.player-input {
  width: 100%;
  padding: .85rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--surface2);
  background: var(--bg);
  color: var(--text);
  font-size: 1.1rem;
  text-align: center;
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.btn-player-start {
  width: 100%;
  padding: .9rem;
  border: none;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #2563c7);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
}
.btn-player-start:hover { filter: brightness(1.08); }
.live-badge {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: .75rem;
  color: var(--success);
  background: rgba(61,214,140,.12);
  padding: .25rem .65rem;
  border-radius: 20px;
  margin-bottom: 1rem;
}
.live-badge .pulse {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--success);
  animation: pulse 1.5s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .5; transform: scale(.85); }
}
.live-code { font-size: .85rem; color: var(--muted); margin-bottom: .75rem; }
.live-code strong { color: var(--accent); letter-spacing: .1em; }
.live-title {
  font-size: clamp(1rem, 4.5vw, 1.35rem);
  font-weight: 600;
  margin-bottom: .5rem;
  min-height: 1.6em;
  color: var(--text);
  word-break: break-word;
  overflow-wrap: anywhere;
}
.live-state { font-size: .9rem; color: var(--muted); margin-bottom: 1rem; }
.live-state span { color: var(--accent); }
.player-progress { margin: 0 0 .75rem; }
.live-sync { font-size: .75rem; color: var(--muted); text-align: center; }

.audio-unlock-banner {
  display: none;
  margin: 0 0 1rem;
  padding: .85rem 1rem;
  border-radius: 10px;
  background: rgba(255, 180, 60, .12);
  border: 1px solid rgba(255, 180, 60, .45);
  text-align: center;
  box-sizing: border-box;
}

body.is-wechat .audio-unlock-banner.show,
body.is-wechat .audio-unlock-banner[style*="block"] {
  display: block !important;
}
.audio-unlock-banner p {
  margin: 0 0 .65rem;
  font-size: .8rem;
  color: #ffc870;
  line-height: 1.45;
}
.btn-audio-unlock {
  width: 100%;
  min-height: 44px;
  border: none;
  border-radius: 8px;
  font-size: .95rem;
  font-weight: 600;
  color: #1a1208;
  background: linear-gradient(135deg, #ffc870, #ff9f43);
  cursor: pointer;
}
.btn-audio-unlock:active { transform: scale(.98); }
.btn-audio-unlock.is-loading { opacity: .75; cursor: wait; }
.btn-audio-unlock.is-ok {
  background: linear-gradient(135deg, #3dd68c, #2eb872);
  color: #0a1a12;
}
.btn-audio-unlock.is-fail {
  box-shadow: 0 0 0 2px rgba(240, 113, 120, .45);
}
.player-error-hint {
  display: none;
  margin: 0 0 .75rem;
  font-size: .75rem;
  color: var(--danger, #f07178);
  text-align: center;
  line-height: 1.4;
  word-break: break-word;
  overflow-wrap: anywhere;
}
.player-error-hint.show { display: block; }

@media (max-width: 480px) {
  .page-player { padding: .75rem; }
  .player-card { padding: 1.25rem 1rem; border-radius: 16px; }
  .player-header { gap: .75rem; margin-bottom: 1.25rem; }
  .player-logo { width: 44px; height: 44px; font-size: 1.2rem; }
  .player-title-row { font-size: 1.05rem; }
  .audio-waveform { gap: 3px; height: 40px; }
  .audio-waveform span { width: 3px; }
  .player-input { font-size: 1rem; padding: .75rem; }
}

@media (max-width: 360px) {
  .areas-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .admin-layout { flex-direction: column; }
  .admin-nav { width: 100%; }
  .admin-nav ul { display: flex; overflow-x: auto; }
  .admin-nav li a { white-space: nowrap; }
}