:root {
  --bg: #f7f9fc;
  --card: #ffffff;
  --text: #1f2937;
  --sub: #6b7280;
  --line: #e5e7eb;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --success: #16a34a;
  --danger: #dc2626;
}

:root[data-theme="dark"] {
  --bg: #0f172a;
  --card: #111827;
  --text: #e5e7eb;
  --sub: #9ca3af;
  --line: #334155;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --success: #22c55e;
  --danger: #ef4444;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
}

a {
  color: var(--primary);
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 16px;
}

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

.brand-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-note {
  font-size: 26px;
  line-height: 1;
}

.title {
  font-size: 22px;
  font-weight: 700;
  margin: 0;
}

.subtitle {
  margin: 4px 0 0;
  color: var(--sub);
  font-size: 14px;
}

.theme-btn {
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 10px;
  cursor: pointer;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
  margin-bottom: 14px;
}

.notice-card {
  border-left: 4px solid var(--primary);
}

.notice-text {
  margin: 0;
  font-size: 14px;
  color: var(--text);
}

.row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.row > * {
  min-width: 0;
}

.input,
.select {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--card);
  color: var(--text);
  padding: 10px 12px;
  font-size: 14px;
}

.input {
  flex: 1;
}

.select {
  width: 120px;
}

.btn {
  border: 0;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  padding: 10px 14px;
  font-size: 14px;
  cursor: pointer;
}

.btn:hover {
  background: var(--primary-hover);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn.secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}

.msg {
  font-size: 13px;
  color: var(--sub);
}

.msg.error {
  color: var(--danger);
}

.list {
  display: grid;
  gap: 10px;
}

.item {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
}

.item-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}

.song-name {
  font-size: 16px;
  font-weight: 600;
  margin: 0;
}

.song-meta {
  margin: 4px 0 0;
  color: var(--sub);
  font-size: 13px;
}

.item-actions {
  display: flex;
  gap: 8px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.quality {
  width: 110px;
}

.audio-wrap {
  margin-top: 10px;
}

audio {
  width: 100%;
}

.block-title {
  font-size: 15px;
  margin: 0 0 10px;
}

.toplist-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.toplist-actions {
  margin-bottom: 10px;
}

.top-item {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  cursor: pointer;
}

.top-item h4 {
  margin: 0;
  font-size: 14px;
}

.top-item p {
  margin: 6px 0 0;
  font-size: 12px;
  color: var(--sub);
}

.hint {
  font-size: 12px;
  color: var(--sub);
  margin-top: 8px;
}

.pager {
  margin-top: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.pager-text {
  font-size: 13px;
  color: var(--sub);
}

.pager-btn {
  min-width: 96px;
}

@media (max-width: 640px) {
  .title {
    font-size: 20px;
  }

  .select,
  .quality {
    width: 100%;
  }

  .btn {
    width: 100%;
  }

  .pager-btn {
    width: auto;
    min-width: 88px;
  }

  .toplist-grid {
    grid-template-columns: 1fr;
  }

}