/* GEO Rank · 深色专业主题 */
:root {
  --bg: #0a0f1e;
  --panel: #101830;
  --panel-2: #0d1428;
  --border: #1f2b4d;
  --text: #e8ecf8;
  --muted: #8a94b8;
  --accent: #5b8cff;
  --accent-2: #22d3ee;
  --good: #34d399;
  --warn: #fbbf24;
  --bad: #f87171;
  --radius: 14px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(91, 140, 255, 0.12), transparent),
    radial-gradient(900px 400px at 10% 0%, rgba(34, 211, 238, 0.08), transparent),
    var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}
.container { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }
.hidden { display: none !important; }

/* 顶栏 */
.topbar { border-bottom: 1px solid var(--border); background: rgba(10, 15, 30, 0.8); backdrop-filter: blur(8px); position: sticky; top: 0; z-index: 10; }
.topbar-inner { display: flex; align-items: center; gap: 22px; height: 60px; }
.brand { display: flex; align-items: baseline; gap: 8px; font-size: 17px; }
.logo { color: var(--accent-2); }
.brand-sub { color: var(--muted); font-size: 12px; }
.nav { display: flex; gap: 18px; margin-left: auto; }
.nav a { color: var(--muted); font-size: 14px; }
.nav a:hover { color: var(--text); }
.lang-switch { display: flex; gap: 6px; }
.lang-btn { background: transparent; border: 1px solid var(--border); color: var(--muted); border-radius: 8px; padding: 4px 10px; cursor: pointer; font-size: 12px; }
.lang-btn.active { color: var(--text); border-color: var(--accent); }

/* Hero */
.hero { padding: 56px 0 34px; text-align: center; }
.hero h1 { font-size: clamp(26px, 4vw, 40px); margin: 0 0 12px; letter-spacing: 0.5px; }
.hero-sub { color: var(--muted); max-width: 640px; margin: 0 auto; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 18px; }
.chip { border: 1px solid var(--border); background: var(--panel-2); color: var(--muted); border-radius: 999px; padding: 4px 12px; font-size: 12px; }
.chip.on { color: var(--good); border-color: rgba(52, 211, 153, 0.4); }
.chip.off { color: var(--muted); opacity: 0.7; }

/* 卡片与表单 */
.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; margin: 20px 0; }
.card h2 { margin: 0 0 18px; font-size: 19px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
@media (max-width: 720px) { .grid { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: 6px; font-size: 13px; }
.field.full { margin-top: 14px; }
.field > span { color: var(--muted); }
.field-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; color: var(--muted); font-size: 13px; }
input, textarea, select {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
  width: 100%;
}
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--accent); }
textarea { resize: vertical; }
.hint { color: var(--muted); font-size: 12px; }

.engines { display: flex; flex-wrap: wrap; gap: 10px; }
.engine-check { display: flex; align-items: center; gap: 8px; border: 1px solid var(--border); background: var(--panel-2); padding: 8px 12px; border-radius: 10px; font-size: 13px; cursor: pointer; }
.engine-check input { width: auto; }
.engine-check.disabled { opacity: 0.45; cursor: not-allowed; }
.engine-check .key-tag { font-size: 11px; color: var(--warn); }

.actions { display: flex; align-items: center; gap: 14px; margin-top: 18px; }
.btn { border: none; border-radius: 10px; padding: 11px 22px; font-size: 14px; cursor: pointer; font-family: inherit; }
.btn.primary { background: linear-gradient(135deg, var(--accent), #7c5bff); color: #fff; font-weight: 600; }
.btn.primary:disabled { opacity: 0.5; cursor: wait; }
.btn.ghost { background: transparent; border: 1px solid var(--border); color: var(--muted); }
.btn.ghost:hover { color: var(--text); border-color: var(--accent); }
.btn.sm { padding: 6px 12px; font-size: 12px; }

/* 结果 */
.results-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.results-head h2 { margin: 0; }
.results-grid { display: flex; gap: 26px; align-items: center; flex-wrap: wrap; }
.gauge-box { position: relative; width: 150px; text-align: center; flex: none; }
.gauge { width: 140px; height: 140px; transform: rotate(-90deg); }
.gauge-bg, .gauge-arc { fill: none; stroke-width: 10; }
.gauge-bg { stroke: var(--panel-2); }
.gauge-arc { stroke-linecap: round; transition: stroke-dashoffset 0.8s ease; }
.gauge-arc.good { stroke: var(--good); }
.gauge-arc.warn { stroke: var(--warn); }
.gauge-arc.bad { stroke: var(--bad); }
.gauge-num { position: absolute; top: 52px; left: 0; right: 0; font-size: 32px; font-weight: 700; }
.gauge-label { color: var(--muted); font-size: 12px; margin-top: 6px; }
.summary { display: flex; flex-direction: column; gap: 8px; flex: 1; min-width: 220px; }
.sum-chip { display: flex; gap: 8px; align-items: baseline; font-size: 13px; color: var(--muted); }
.sum-chip b { color: var(--text); font-size: 15px; }

.engine-grid { display: grid; grid-template-columns: 1fr; gap: 14px; margin-top: 22px; }
@media (min-width: 860px) { .engine-grid { grid-template-columns: 1fr 1fr; } }
.engine-card { background: var(--panel-2); border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
.engine-head { display: flex; align-items: baseline; gap: 10px; }
.engine-head .model { color: var(--muted); font-size: 12px; }
.engine-head .score-num { margin-left: auto; font-size: 22px; font-weight: 700; }
.score-num.good { color: var(--good); }
.score-num.warn { color: var(--warn); }
.score-num.bad { color: var(--bad); }
.bar { height: 6px; background: var(--panel); border-radius: 4px; margin: 10px 0; overflow: hidden; }
.bar-fill { height: 100%; border-radius: 4px; background: linear-gradient(90deg, var(--accent), var(--accent-2)); transition: width 0.6s ease; }
.factor-line { color: var(--muted); font-size: 12px; margin-bottom: 10px; }

.prompt-list { display: flex; flex-direction: column; gap: 8px; }
.prompt-item { border-top: 1px dashed var(--border); padding-top: 8px; }
.prompt-head { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; font-size: 13px; }
.prompt-text { flex: 1 1 100%; color: var(--text); }
.badge { border-radius: 6px; padding: 2px 8px; font-size: 11px; white-space: nowrap; }
.badge.ok { background: rgba(52, 211, 153, 0.15); color: var(--good); }
.badge.off { background: rgba(138, 148, 184, 0.15); color: var(--muted); }
.badge.pos { background: rgba(52, 211, 153, 0.15); color: var(--good); }
.badge.neu { background: rgba(138, 148, 184, 0.15); color: var(--muted); }
.badge.neg { background: rgba(248, 113, 113, 0.15); color: var(--bad); }
.badge.err { background: rgba(251, 191, 36, 0.15); color: var(--warn); }
.prompt-item details { margin-top: 6px; font-size: 12px; }
.prompt-item summary { color: var(--muted); cursor: pointer; }
.prompt-item pre { white-space: pre-wrap; word-break: break-word; background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 10px; color: var(--muted); margin: 8px 0; max-height: 220px; overflow: auto; }
.cite-list { display: flex; flex-direction: column; gap: 4px; }
.cite-list a { font-size: 12px; word-break: break-all; }
.err-text { color: var(--warn); font-size: 12px; margin-top: 6px; }

/* 历史 */
.history { display: flex; flex-direction: column; gap: 8px; }
.history-item { display: flex; align-items: center; gap: 12px; background: var(--panel-2); border: 1px solid var(--border); border-radius: 10px; padding: 10px 14px; font-size: 13px; cursor: pointer; }
.history-item:hover { border-color: var(--accent); }
.history-item .h-time { color: var(--muted); font-size: 12px; }
.history-item .h-brand { font-weight: 600; }
.history-item .h-score { margin-left: auto; font-weight: 700; }
.history-item .h-engines { color: var(--muted); font-size: 12px; }

/* 页脚 */
.footer { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; color: var(--muted); font-size: 12px; padding: 26px 20px 40px; }