:root {
  --bg: #0f1117;
  --bg-panel: #171a23;
  --bg-input: #10131b;
  --bg-card: #1b1f2a;
  --border: #272c39;
  --text: #e6e8ee;
  --text-dim: #99a0b0;
  --text-faint: #6b7280;
  --accent: #7c5cff;
  --accent-hover: #8f74ff;
  --accent-soft: rgba(124, 92, 255, 0.14);
  --danger: #ff6b6b;
  --ok: #4ade80;
  --radius: 12px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f5f6fa;
    --bg-panel: #ffffff;
    --bg-input: #f7f8fc;
    --bg-card: #fbfbfe;
    --border: #e2e5ee;
    --text: #1a1d26;
    --text-dim: #5b6373;
    --text-faint: #8c93a3;
    --accent-soft: rgba(124, 92, 255, 0.1);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0 0 64px;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.6 system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.topbar {
  padding: 28px 24px 8px;
  max-width: 960px;
  margin: 0 auto;
}

.topbar h1 { margin: 0; font-size: 24px; letter-spacing: 0.3px; }
.topbar .sub { margin: 6px 0 0; color: var(--text-dim); font-size: 14px; }

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.panel > h2 { margin: 0 0 16px; font-size: 17px; }

/* ---------- 表单 ---------- */

.field { display: block; margin-bottom: 14px; }

.label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

.label em {
  font-style: normal;
  font-weight: 400;
  color: var(--text-faint);
  margin-left: 6px;
}

textarea, input[type="text"], input[type="search"] {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-input);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  resize: vertical;
}

textarea#lyrics {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.7;
}

textarea:focus, input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }
}

.actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 4px;
}

button, .btn-download {
  font: inherit;
  border-radius: 8px;
  cursor: pointer;
  border: 1px solid transparent;
  padding: 9px 16px;
  transition: background 0.15s, border-color 0.15s, opacity 0.15s;
}

button.primary {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}

button.primary:hover:not(:disabled) { background: var(--accent-hover); }

button:disabled { opacity: 0.55; cursor: progress; }

button.ghost, .btn-download {
  background: transparent;
  color: var(--text-dim);
  border-color: var(--border);
  text-decoration: none;
}

button.ghost:hover:not(:disabled), .btn-download:hover {
  color: var(--text);
  border-color: var(--accent);
}

button.small, .btn-download {
  padding: 5px 10px;
  font-size: 12px;
}

.status { font-size: 13px; color: var(--text-dim); }
.status.error { color: var(--danger); }
.status.ok { color: var(--ok); }

.stage-two {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px dashed var(--border);
}

.stage-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 12px;
}

.stage-head h3 { margin: 0; font-size: 15px; }
.hint { font-size: 12px; color: var(--text-faint); }

/* ---------- 历史 ---------- */

.history-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.history-head h2 { margin: 0; font-size: 17px; }
.count { color: var(--text-faint); font-size: 13px; font-weight: 400; }

.history-tools { display: flex; gap: 8px; }
.history-tools input { width: 260px; }

@media (max-width: 640px) {
  .history-tools { width: 100%; }
  .history-tools input { width: 100%; }
}

.history { display: flex; flex-direction: column; gap: 12px; }

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.card.fresh { border-color: var(--accent); }

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
}

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

.card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 3px;
  font-size: 12px;
  color: var(--text-faint);
}

.badge {
  padding: 1px 7px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-dim);
}

.card-actions { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }

.tags {
  margin: 10px 0 0;
  font-size: 12px;
  color: var(--accent);
}

.prompt {
  margin: 8px 0 0;
  font-size: 13px;
  color: var(--text-dim);
  white-space: pre-wrap;
  word-break: break-word;
}

.player { width: 100%; margin-top: 12px; height: 36px; }

.lyrics-box { margin-top: 10px; font-size: 13px; }

.lyrics-box summary {
  cursor: pointer;
  color: var(--text-dim);
  font-size: 12px;
}

.lyrics-text {
  margin: 10px 0 0;
  padding: 12px;
  background: var(--bg-input);
  border-radius: 8px;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12.5px;
  line-height: 1.75;
  max-height: 420px;
  overflow: auto;
}

.empty { color: var(--text-faint); text-align: center; padding: 24px 0; }