/* 从 gacha-simulator.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);
  --ssr:#f6ad55;--sr:#b794f6;--r:#7cc7ff;--green:#34d399;--red:#fb7185;
}
*{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:900px;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)}
.login-status{display:inline-block;margin-left:10px;font-size:13px;padding:5px 12px;border-radius:20px;border:1px solid var(--border)}
.login-status.logged-in{color:#4ade80;border-color:#4ade80;background:rgba(74,222,128,.1)}
.login-status.not-logged{color:#f87171;border-color:#f87171;background:rgba(248,113,113,.1)}
.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}
.preset-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.preset-btn{padding:6px 14px;border:1px solid var(--border);border-radius:20px;background:transparent;color:var(--text);cursor:pointer;font-size:12px;transition:all .2s}
.preset-btn:hover,.preset-btn.active{background:linear-gradient(135deg,var(--accent),var(--accent2));border-color:transparent;color:#fff}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-group{display:flex;flex-direction:column;gap:4px}
.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)}
.form-group.full{grid-column:1/-1}
.btn-primary{width:100%;padding:12px;border:none;border-radius:10px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;font-size:15px;font-weight:600;cursor:pointer;transition:transform .15s,box-shadow .2s;margin-top:14px}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 20px rgba(183,148,246,0.3)}
.btn-primary:active{transform:translateY(0)}
.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:16px}
.metric{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:12px 14px;text-align:center}
.metric-label{font-size:11px;color:var(--text-dim);margin-bottom:4px}
.metric-value{font-size:18px;font-weight:700}
.metric-value.ssr{color:var(--ssr)}
.metric-value.sr{color:var(--sr)}
.metric-value.green{color:var(--green)}
.metric-value.red{color:var(--red)}
.result-section{margin-top:16px}
.result-section h3{font-size:14px;color:var(--accent2);margin-bottom:10px}
.chart-container{background:rgba(0,0,0,0.2);border-radius:10px;padding:16px;margin-bottom:14px;overflow-x:auto}
canvas{max-width:100%;height:auto}
.distribution-table{width:100%;border-collapse:collapse;font-size:13px}
.distribution-table th,.distribution-table td{padding:8px 10px;text-align:left;border-bottom:1px solid var(--border)}
.distribution-table th{color:var(--accent);background:rgba(183,148,246,0.08);font-weight:600}
.bar-cell{width:50%}
.bar-bg{background:rgba(255,255,255,0.05);border-radius:4px;height:18px;position:relative;overflow:hidden}
.bar-fill{height:100%;border-radius:4px;transition:width .5s ease}
.bar-fill.ssr{background:linear-gradient(90deg,var(--ssr),#fbd38d)}
.bar-fill.sr{background:linear-gradient(90deg,var(--sr),#d6bcfa)}
.bar-label{position:absolute;right:6px;top:50%;transform:translateY(-50%);font-size:11px;color:#fff;font-weight:600}
.tip{font-size:12px;color:var(--text-dim);margin-top:10px;padding:10px 14px;background:rgba(183,148,246,0.05);border-radius:8px;border-left:3px solid var(--accent)}
.loading{text-align:center;padding:30px;color:var(--text-dim)}
.spinner{display:inline-block;width:30px;height:30px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;margin-bottom:10px}
@keyframes spin{to{transform:rotate(360deg)}}
@media(max-width:600px){
  .form-grid{grid-template-columns:1fr}
  .metrics{grid-template-columns:1fr 1fr}
  .card{padding:16px}
}