/* 从 trends.html 抽离的页面样式 */
:root{
  --bg:#0f0c29;--bg2:#1a1a3e;--accent:#b794f6;--accent2:#f6ad55;
  --text:#e8e8f0;--text-dim:#a0a0b8;--card:rgba(255,255,255,0.05);--border:rgba(183,148,246,0.2);
  --green:#34d399;--red:#fb7185;--blue:#7cc7ff;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:linear-gradient(135deg,var(--bg),var(--bg2));color:var(--text);line-height:1.7;min-height:100vh;padding:20px}
.container{max-width:1000px;margin:0 auto}
.header{text-align:center;margin-bottom:24px}
.header h1{font-size:26px;background:linear-gradient(90deg,var(--accent),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:4px}
.header p{color:var(--text-dim);font-size:13px}
.back-link{display:inline-block;margin-bottom:16px;color:var(--accent);text-decoration:none;font-size:13px;border:1px solid var(--border);padding:5px 12px;border-radius:20px}
.back-link:hover{color:#fff;border-color:var(--accent)}
.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:20px 24px;margin-bottom:16px}
.card h2{font-size:17px;color:var(--accent);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.chart-container{position:relative;height:400px;background:rgba(0,0,0,0.2);border-radius:10px;padding:16px}
.series-tabs{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap;align-items:center}
.series-tab{padding:6px 14px;border-radius:20px;border:1px solid var(--border);background:transparent;color:var(--text-dim);cursor:pointer;font-size:12px;transition:all .2s;display:flex;align-items:center;gap:6px}
.series-tab.active{background:linear-gradient(135deg,var(--accent),var(--accent2));border-color:transparent;color:#fff}
.series-tab .del{cursor:pointer;opacity:.6;font-size:14px}
.series-tab .del:hover{opacity:1;color:var(--red)}
.add-series-btn{padding:6px 14px;border-radius:20px;border:1px dashed var(--border);background:transparent;color:var(--text-dim);cursor:pointer;font-size:12px;transition:all .2s}
.add-series-btn:hover{border-color:var(--accent);color:var(--accent)}
.form-row{display:flex;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.form-group{display:flex;flex-direction:column;gap:4px;flex:1;min-width:120px}
.form-group label{font-size:12px;color:var(--text-dim)}
.form-group input{background:rgba(0,0,0,0.3);border:1px solid var(--border);border-radius:8px;padding:8px 12px;color:var(--text);font-size:14px;outline:none;transition:border .2s}
.form-group input:focus{border-color:var(--accent)}
.btn-primary{padding:10px 20px;border:none;border-radius:10px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:transform .15s}
.btn-primary:hover{transform:translateY(-1px)}
.btn-secondary{padding:8px 16px;border:1px solid var(--border);border-radius:8px;background:transparent;color:var(--text-dim);font-size:12px;cursor:pointer;transition:all .2s}
.btn-secondary:hover{border-color:var(--accent);color:var(--accent)}
.data-table{width:100%;border-collapse:collapse;font-size:13px;margin-top:12px}
.data-table th,.data-table td{padding:8px 10px;text-align:left;border-bottom:1px solid var(--border)}
.data-table th{color:var(--accent);background:rgba(183,148,246,0.08);font-weight:600}
.data-table .del-btn{color:var(--red);cursor:pointer;background:none;border:none;font-size:14px}
.empty{text-align:center;padding:30px;color:var(--text-dim)}
.empty .icon{font-size:40px;margin-bottom:10px;opacity:.5}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:16px}
.stat{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:12px 14px;text-align:center}
.stat-label{font-size:11px;color:var(--text-dim);margin-bottom:4px}
.stat-value{font-size:18px;font-weight:700}
.stat-value.green{color:var(--green)}
.stat-value.red{color:var(--red)}
.stat-value.accent{color:var(--accent)}
.stat-value.accent2{color:var(--accent2)}
@media(max-width:600px){.stats{grid-template-columns:1fr 1fr}.chart-container{height:300px}}