*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:#fafafa;color:#111}
header{position:sticky;top:0;background:#fff;border-bottom:1px solid #eee;padding:.5rem}
h1{margin:.2rem 0;font-size:1.3rem}
nav{display:flex;flex-wrap:wrap;gap:.5rem}
nav button, nav .import-label{border:1px solid #ddd;background:#fff;padding:.4rem .6rem;border-radius:.4rem;cursor:pointer}
nav button.active{border-color:#111}
nav input[type=file]{display:none}
main{padding:1rem;max-width:1200px;margin:0 auto}
.view{display:none}
.view.visible{display:block}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1rem}
.card{border:1px solid #eee;background:#fff;border-radius:.5rem;padding:.8rem}
table{width:100%;border-collapse:collapse;background:#fff;border:1px solid #eee;border-radius:.5rem;overflow:hidden}
th,td{padding:.5rem;border-bottom:1px solid #f0f0f0;text-align:left}
tbody tr:nth-child(even){background:#fcfcfc}
label{display:block;margin:.4rem 0}
input,select{width:100%;padding:.45rem;border:1px solid #ddd;border-radius:.4rem;background:#fff}
.btn-row{display:flex;gap:.5rem;margin-top:.5rem;flex-wrap:wrap}
footer{padding:1rem;text-align:center;color:#666}
.badge{display:inline-block;padding:.1rem .4rem;border-radius:.4rem;background:#f2f2f2;font-size:.8rem}
.net-pos{color:green}
.net-neg{color:#b00020}
small.muted{color:#666}
.error{color:#b00020;margin-top:.75rem}
.panel{border:1px solid #eee;background:#fff;border-radius:.5rem;padding:.8rem;margin-top:1rem}
.denom-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(90px,1fr));gap:.4rem}
.denom-chip{display:inline-flex;align-items:center;gap:.35rem;border:1px solid #ddd;border-radius:.4rem;padding:.3rem .45rem;background:#fff}
legend{font-weight:600}
input[type="checkbox"]{width:auto;height:auto}
.mode-badge{margin:.25rem 0;color:#666}

/* Map layout */
.map-layout{display:grid;grid-template-columns:280px 1fr;gap:1rem;min-height:70vh}
.map-sidebar{display:flex;flex-direction:column;gap:1rem}
#leafletMap{width:100%;height:70vh;border:1px solid #eee;border-radius:.5rem;overflow:hidden;min-height:360px}
.route-list{display:grid;grid-template-columns:1fr;gap:.25rem;max-height:30vh;overflow:auto}
.route-item{display:flex;align-items:center;gap:.5rem}
.route-item input{width:auto}
table.mini{width:100%;border-collapse:collapse}
table.mini th,table.mini td{padding:.2rem .3rem;border-bottom:1px solid #eee;font-size:.85rem}

/* Mobile */
@media (max-width: 840px) {
  .map-layout { grid-template-columns: 1fr; }
  #leafletMap { height: 65vh; }
}