:root{--bg:#f6f8fa;--card:#fff;--muted:#666;--accent:#0b5fff;--good:#2e7d32;--warn:#b7791f;--bad:#c62828;--neutral:#69727d;--line:#e7ecf2}
*{box-sizing:border-box;font-family:Segoe UI,Roboto,Arial,sans-serif}
body{margin:0;background:var(--bg);color:#111}
.site-header{background:linear-gradient(90deg,#fff,#f7fbff);padding:18px 24px;border-bottom:1px solid #e6eefb}
.site-header h1{margin:0;font-size:18px}
.container{max-width:1180px;margin:18px auto;padding:0 16px}
.panel{background:var(--card);padding:12px;margin:12px 0;border-radius:6px;box-shadow:0 1px 2px rgba(0,0,0,0.03);overflow-x:auto}
.cards,.option-stack{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-bottom:12px}
.decision-card,.option-card,.leg-card,.route-summary{border:1px solid var(--line);border-radius:6px;background:#fff;padding:12px}
.decision-card h3,.option-card h3,.route-summary h4{margin:0}
.decision-head{display:flex;justify-content:space-between;gap:10px;align-items:flex-start;margin-bottom:10px}
.route-line{font-size:13px;color:#333;margin-top:4px}
.metric-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.metric{border:1px solid #edf1f5;border-radius:6px;padding:8px;background:#fbfcfe}
.metric span{display:block;color:var(--muted);font-size:12px}
.metric strong{font-size:16px}
.status-pill,.change-badge{display:inline-block;border-radius:999px;padding:3px 8px;font-size:12px;font-weight:600;white-space:nowrap}
.brand-badge,.role-badge{display:inline-block;border-radius:999px;padding:3px 8px;font-size:11px;font-weight:700;white-space:nowrap;margin-right:4px;border:1px solid var(--line)}
.brand-afrosiyob{background:#edf8ef;color:var(--good);border-color:#b9dec0}
.brand-sharq{background:#fff4e3;color:#995b00;border-color:#efc991}
.brand-other{background:#f4f6f8;color:var(--neutral);border-color:#d7dde4}
.brand-unknown{background:#f4f6f8;color:var(--muted);border-color:#d7dde4}
.brand-row-other,.brand-row-unknown{color:#555}
.state-strong{border-color:#b9dec0;background:#edf8ef;color:var(--good)}
.state-moderate{border-color:#ead99f;background:#fff8db;color:#826000}
.state-weak{border-color:#efc0bd;background:#fff1f0;color:var(--bad)}
.state-unknown{border-color:#d7dde4;background:#f4f6f8;color:var(--neutral)}
.state-fallback{border-color:#efc991;background:#fff4e3;color:#995b00}
.leg-card{margin:10px 0}
.leg-title{display:flex;justify-content:space-between;gap:10px;border-bottom:1px solid var(--line);padding-bottom:6px;margin-bottom:8px}
.train-block{padding:8px;border-radius:6px;margin-top:8px;background:#fbfcfe;border:1px solid #edf1f5}
.train-block.fallback{background:#fff8ee;border-color:#f2d0a0}
.block-label{font-size:11px;text-transform:uppercase;color:var(--muted);font-weight:700;margin-bottom:3px}
.train-main{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.leg-metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 10px;margin-top:6px;font-size:12px;color:#333}
.route-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-bottom:12px}
.route-summary{font-size:12px;line-height:1.45}
.route-summary h4{font-size:14px;margin-bottom:5px}
.badge{display:inline-block;padding:4px 8px;border-radius:12px;font-size:12px}
.badge.green{background:#e8f5e9;color:var(--good);border:1px solid #c8e6c9}
.badge.amber{background:#fff3e0;color:var(--warn);border:1px solid #ffd7a6}
.badge.gray{background:#f5f5f5;color:var(--neutral)}
.badge.red{background:#ffebee;color:var(--bad);border:1px solid #f2bdbd}
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{padding:6px 8px;text-align:left;border-bottom:1px solid #f0f0f0}
th{background:#fbfdff;position:sticky;top:0}
th.sortable-header{cursor:pointer;user-select:none}
th.sortable-header::after{content:" ↕";color:#9aa4af;font-size:11px}
th.sortable-header.sort-active[data-sort-dir="asc"]::after{content:" ▲";color:#111}
th.sortable-header.sort-active[data-sort-dir="desc"]::after{content:" ▼";color:#111}
.route-card{display:block;overflow-x:auto;border:1px solid var(--line);border-radius:6px;padding:10px;margin:10px 0;background:#fff}
.route-card .trains{flex:1}
.heat-cell{padding:8px;text-align:center;border-radius:4px;min-width:90px}
#heatmap,#changes,#timetable,#monthly,#history-table{overflow-x:auto}
.heat-white{background:#fff}
.heat-gray{background:#e0e0e0}
.heat-orange{background:#ffcc80}
.heat-yellow{background:#fff59d}
.heat-green{background:#a5d6a7}
.heat-dark{background:#2e7d32;color:#fff}
.controls{display:flex;gap:8px;align-items:center;margin-bottom:8px}
.history-filter-bar{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:10px}
.history-filter-bar select,.history-filter-bar button{min-height:34px;border:1px solid #cfd7df;border-radius:6px;background:#fff;padding:5px 8px}
.filter-reset{cursor:pointer}
.history-count{font-weight:700;margin:8px 0;color:#222}
.history-brand-summary{display:flex;gap:10px;flex-wrap:wrap;margin:8px 0;font-size:13px}
.history-brand-summary span{border:1px solid var(--line);border-radius:6px;background:#fbfcfe;padding:6px 8px}
.muted{color:var(--muted);font-size:13px}
.no-data{border:1px dashed #b8c2cc;background:#fff}
.no-data h2{margin:0 0 6px 0;font-size:16px}
.coverage{margin-top:6px;font-size:13px}
.coverage-failed{margin-top:4px;color:#8a4b00;font-size:13px}
.heat-cell{vertical-align:middle}
.heat-cell span{display:block}
.heat-sample{font-size:11px;color:#444;margin-top:2px}
.heat-low-sample{outline:2px solid #111;outline-offset:-2px}
.heat-legend{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 10px 0;font-size:12px}
.heat-legend span{border-radius:999px;padding:4px 8px;border:1px solid #ddd}
.low-conf{background:#fff;color:#111;outline:2px solid #111;outline-offset:-2px}
.change-good{background:#e8f5e9;color:var(--good)}
.change-bad{background:#ffebee;color:var(--bad)}
.change-open{background:#eef6ff;color:#075985}
.change-neutral{background:#f3f4f6;color:#555}
.mini-chart{display:grid;gap:5px;margin:10px 0}
.chart-row{display:grid;grid-template-columns:minmax(180px,1fr) 2fr 48px;gap:8px;align-items:center;font-size:12px}
.bar-track{height:8px;background:#edf1f5;border-radius:999px;overflow:hidden}
.bar-fill{height:100%;background:#2e7d32}
.sortable th{cursor:pointer}
.sim-controls{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.sim-controls select{min-height:34px;border:1px solid #cfd7df;border-radius:6px;background:#fff;padding:5px 8px}
.sim-result{display:flex;gap:12px;align-items:center;justify-content:space-between;border:1px solid var(--line);border-radius:6px;padding:10px;margin-bottom:10px;flex-wrap:wrap}
.sim-result strong{font-size:18px}
.sim-result span{font-size:13px}
.sim-table{min-width:920px}
.sim-all-row td{background:#fbfcfe;padding:4px 8px}
.sim-all-row details{font-size:12px}
.sim-all-row summary{cursor:pointer;color:#0b5fff}
.nested-table{margin-top:6px;font-size:12px}
@media (max-width: 900px){
  .cards,.option-stack,.route-strip{grid-template-columns:1fr}
  .metric-grid,.leg-metrics{grid-template-columns:1fr}
  .site-header{padding:14px 16px}
  .container{padding:0 10px}
}