:root {
  --bg: #0b1020;
  --card: #141a2e;
  --card-2: #1b2340;
  --text: #e7ecff;
  --muted: #9aa7d6;
  --primary: #5b8cff;
  --primary-2: #84a8ff;
  --danger: #ff5f7a;
  --success: #34d399;
  --warning: #fbbf24;
  --line: #2a345c;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: linear-gradient(180deg, #080c1a 0%, #0e1530 100%);
  color: var(--text);
  font-family: 'Segoe UI', 'PingFang TC', 'Microsoft JhengHei', sans-serif;
  min-height: 100%;
}

a {
  color: var(--primary-2);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: min(1180px, 100% - 24px);
  margin: 0 auto;
}

.page-title {
  margin: 0;
  font-size: 1.35rem;
}

.muted {
  color: var(--muted);
}

.card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
}

.grid {
  display: grid;
  gap: 12px;
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

label {
  display: block;
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 4px;
}

input,
textarea,
select {
  width: 100%;
  background: #0f1730;
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 10px;
  padding: 10px;
  outline: none;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(91, 140, 255, 0.2);
}

button {
  border: 1px solid transparent;
  background: var(--primary);
  color: white;
  border-radius: 10px;
  padding: 9px 12px;
  cursor: pointer;
  font-weight: 600;
}

button:hover {
  filter: brightness(1.08);
}

button.ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--text);
}

button.warn {
  background: var(--warning);
  color: #111827;
}

button.danger {
  background: var(--danger);
}

button.success {
  background: var(--success);
  color: #062a1a;
}

button.small {
  padding: 6px 9px;
  border-radius: 8px;
  font-size: 0.86rem;
}

.status {
  margin-top: 10px;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(20, 26, 46, 0.75);
  font-size: 0.92rem;
}

.status.info {
  border-color: #395190;
}

.status.success {
  border-color: #196f51;
  color: #b3f8dc;
}

.status.warn {
  border-color: #8b6b1d;
  color: #ffe7a8;
}

.status.error {
  border-color: #8c2940;
  color: #ffd3db;
}

.hidden {
  display: none !important;
}

.row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

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

.mono {
  font-family: 'Consolas', 'Menlo', monospace;
}

.badge {
  display: inline-block;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 2px 8px;
  font-size: 0.78rem;
  color: var(--muted);
}

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

.list > li {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  margin-bottom: 8px;
  background: rgba(255, 255, 255, 0.01);
}

.song-cover {
  width: 84px;
  height: 52px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--line);
}

.song-title {
  font-size: 1rem;
  font-weight: 700;
}

.song-sub {
  color: var(--muted);
  font-size: 0.88rem;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 10px 8px;
  text-align: left;
  font-size: 0.92rem;
  vertical-align: top;
}

th {
  color: var(--muted);
}

.tab-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tab-btn {
  background: #111a36;
  border: 1px solid var(--line);
}

.tab-btn.active {
  background: var(--primary);
  border-color: var(--primary);
}

/* TV */
.tv-body {
  overflow: hidden;
}

.tv-root {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 12px;
  padding: 12px;
}

.tv-top {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
}

.tv-room {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
}

.tv-room-code {
  font-size: 1.6rem;
  font-weight: 800;
  color: #c6d7ff;
}

.tv-qr {
  width: 110px;
  height: 110px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
}

.tv-main {
  display: grid;
  grid-template-columns: minmax(0, 1.8fr) minmax(280px, 1fr);
  gap: 12px;
  min-height: 0;
}

.tv-player-card {
  position: relative;
  min-height: 60vh;
  overflow: hidden;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: #050812;
}

.tv-player-host,
.tv-player-host iframe,
.tv-player-host video {
  width: 100%;
  height: 100%;
  display: block;
}

.tv-overlay {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 14px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0));
}

.tv-song-title {
  font-size: 1.4rem;
  font-weight: 800;
}

.tv-song-sub {
  color: #d4deff;
  margin-top: 4px;
}

.tv-side {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.tv-queue {
  flex: 1;
  overflow-y: auto;
}

.tv-controls {
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

/* Mobile */
.mobile-root {
  padding: 12px 0 20px;
}

.mobile-header {
  position: sticky;
  top: 0;
  z-index: 3;
  backdrop-filter: blur(8px);
  background: rgba(9, 13, 28, 0.78);
  border-bottom: 1px solid var(--line);
  margin-bottom: 12px;
}

.mobile-header-inner {
  padding: 10px 0;
}

.mobile-title {
  margin: 0;
  font-size: 1.1rem;
}

.mobile-controls {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.mobile-song-item {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 10px;
  align-items: center;
}

.mobile-song-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 8px;
}

/* Admin */
.admin-root {
  padding: 16px 0 24px;
}

.admin-header {
  margin-bottom: 12px;
}

.section-stack {
  display: grid;
  gap: 12px;
}

@media (max-width: 920px) {
  .grid-2,
  .grid-3,
  .tv-main {
    grid-template-columns: 1fr;
  }

  .tv-player-card {
    min-height: 46vh;
  }
}

@media (max-width: 560px) {
  .mobile-controls {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .tv-room-code {
    font-size: 1.25rem;
  }

  .tv-song-title {
    font-size: 1.12rem;
  }
}