:root {
  --teal-700: #0f766e;
  --teal-600: #0d9488;
  --teal-500: #14b8a6;
  --teal-50: #f0fdfa;
  --slate-900: #0f172a;
  --slate-700: #334155;
  --slate-500: #64748b;
  --slate-300: #cbd5e1;
  --slate-100: #f1f5f9;
  --slate-50: #f8fafc;
  --bg: #f8fafc;
  --card: #ffffff;
  --border: #e2e8f0;
  --danger: #b91c1c;
  --warn: #b45309;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--slate-900);
  line-height: 1.6;
  font-size: 15px;
}
.container { max-width: 1100px; margin: 0 auto; padding: 0 16px; }
a { color: var(--teal-700); text-decoration: none; }
a:hover { color: var(--teal-600); }
.hidden { display: none !important; }

.topbar {
  background: var(--slate-900);
  color: #fff;
  position: sticky; top: 0; z-index: 20;
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.brand { color: #fff; font-weight: 700; font-size: 17px; }
.nav { display: flex; gap: 16px; align-items: center; }
.nav a { color: #e2e8f0; font-size: 14px; }
.nav a:hover { color: #fff; }

.footer { padding: 24px 0; color: var(--slate-500); font-size: 12px; text-align: center; }

main { padding: 24px 16px 64px; min-height: 70vh; }

.btn {
  display: inline-block; padding: 8px 14px; border-radius: 6px; border: 1px solid transparent;
  background: var(--teal-600); color: #fff; cursor: pointer; font-size: 14px;
}
.btn:hover { background: var(--teal-700); }
.btn-ghost { background: transparent; border-color: var(--slate-300); color: var(--slate-700); }
.btn-ghost:hover { background: var(--slate-100); color: var(--slate-900); }
.btn-danger { background: var(--danger); }
.btn-warn { background: var(--warn); }
.btn-sm { padding: 4px 10px; font-size: 12px; }

.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  padding: 16px; margin-bottom: 16px;
}
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }

.filters { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 16px; }
.filters input, .filters select, textarea, input[type=text], input[type=password] {
  padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px;
  background: #fff;
}
.filters input[type=search] { flex: 1; min-width: 200px; }

.tag {
  display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px;
  background: var(--teal-50); color: var(--teal-700); margin-right: 6px;
}
.tag.cat-fs { background: #fef3c7; color: #92400e; }

.scenario-card h3 { margin: 0 0 6px; font-size: 17px; }
.scenario-card .zh { color: var(--slate-700); margin: 0 0 8px; }
.scenario-card .summary { color: var(--slate-500); font-size: 13px; margin: 0; }

.tabs { display: flex; gap: 4px; border-bottom: 2px solid var(--border); margin-bottom: 16px; flex-wrap: wrap; }
.tab {
  padding: 8px 14px; cursor: pointer; border: none; background: transparent;
  font-size: 14px; color: var(--slate-500); border-bottom: 2px solid transparent; margin-bottom: -2px;
}
.tab.active { color: var(--teal-700); border-bottom-color: var(--teal-600); font-weight: 600; }

.section-title {
  font-size: 14px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--slate-500);
  margin: 20px 0 8px;
}

.expr { padding: 10px 0; border-bottom: 1px dashed var(--border); }
.expr .en { font-weight: 600; color: var(--slate-900); }
.expr .zh { color: var(--slate-700); }
.expr .meta { font-size: 12px; color: var(--slate-500); margin-top: 2px; }

.dialogue-line { padding: 8px 0; border-bottom: 1px dashed var(--border); }
.dialogue-line .speaker { font-weight: 600; color: var(--teal-700); }
.dialogue-line .en { color: var(--slate-900); }
.dialogue-line .zh { color: var(--slate-700); font-size: 13px; }

.play-btn {
  border: none; background: var(--teal-50); color: var(--teal-700);
  border-radius: 999px; padding: 2px 10px; cursor: pointer; font-size: 12px; margin-left: 6px;
}
.play-btn:hover { background: var(--teal-100, #ccfbf1); }
.rate-select { font-size: 12px; padding: 2px 6px; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px; border-bottom: 1px solid var(--border); }
th { background: var(--slate-50); font-weight: 600; }

.modal-mask {
  position: fixed; inset: 0; background: rgba(15, 23, 42, 0.5); z-index: 50;
  display: flex; align-items: center; justify-content: center; padding: 16px;
}
.modal {
  background: #fff; border-radius: 10px; max-width: 640px; width: 100%;
  padding: 20px; max-height: 90vh; overflow: auto;
}
.modal h2 { margin-top: 0; }

.field { margin-bottom: 12px; }
.field label { display: block; font-size: 13px; color: var(--slate-700); margin-bottom: 4px; }
.field input, .field textarea, .field select { width: 100%; }
.field textarea { min-height: 80px; font-family: ui-monospace, Menlo, monospace; }

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

.banner { padding: 10px 14px; border-radius: 6px; margin-bottom: 12px; }
.banner-error { background: #fee2e2; color: var(--danger); }
.banner-ok { background: #d1fae5; color: #065f46; }
.banner-warn { background: #fef3c7; color: var(--warn); }

.editor-block { border: 1px solid var(--border); border-radius: 8px; padding: 12px; margin-bottom: 12px; }
.editor-block h4 { margin: 0 0 8px; }

@media (max-width: 640px) {
  .topbar-inner { height: 52px; }
  main { padding: 16px 12px 48px; }
  .grid { grid-template-columns: 1fr; }
}