:root{
  --fire:#c62828;
  --fire2:#b71c1c;
  --bg:#f4f6f8;
  --card:#ffffff;
  --text:#1a1a1a;
  --muted:#6b7280;
  --line:#e5e7eb;
  --shadow: 0 10px 20px rgba(0,0,0,.06);
  --radius: 16px;
  --max: 1100px;
  font-synthesis-weight: none;
}

*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}
a{color:var(--fire);text-decoration:none}
a:hover{color:var(--fire2)}
.container{max-width:var(--max);margin:0 auto;padding:18px}

.nav{
  position:sticky;top:0;z-index:10;
  background:#fff;border-bottom:1px solid var(--line);
}
.nav-inner{max-width:var(--max);margin:0 auto;display:flex;gap:14px;align-items:center;padding:12px 18px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800}
.badge{background:rgba(198,40,40,.1);color:var(--fire);padding:4px 10px;border-radius:999px;font-size:12px;font-weight:700}
.menu{margin-left:auto;display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.menu a{padding:8px 10px;border-radius:10px}
.menu a.active{background:rgba(198,40,40,.08);color:var(--fire);font-weight:700}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.card .head{padding:14px 16px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:12px;align-items:center}
.card .body{padding:16px}
.grid{display:grid;gap:14px}
.grid.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media(max-width:900px){.grid.cols-4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.grid.cols-4{grid-template-columns:repeat(1,minmax(0,1fr))}}

.kpi .label{color:var(--muted);font-size:13px}
.kpi .value{font-size:26px;font-weight:800;margin-top:4px}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid var(--line);background:#fff;color:var(--text);
  padding:10px 12px;border-radius:12px;font-weight:700;cursor:pointer
}
.btn.primary{background:var(--fire);border-color:var(--fire);color:#fff}
.btn.primary:hover{background:var(--fire2)}
.btn.danger{background:#fff;border-color:#fecaca;color:#b91c1c}
.btn.small{padding:8px 10px;border-radius:10px;font-size:13px}
.input, select, textarea{
  width:100%;padding:10px 12px;border-radius:12px;border:1px solid var(--line);
  background:#fff;font:inherit
}
.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:700px){.row{grid-template-columns:1fr}}
.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:10px 8px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.table th{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.06em}
.pill{display:inline-block;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:800}
.pill.open{background:rgba(198,40,40,.12);color:var(--fire)}
.pill.paid{background:rgba(46,125,50,.12);color:#2e7d32}
.pill.reminder{background:rgba(237,108,2,.12);color:#ed6c02}
.pill.cancelled{background:rgba(107,114,128,.12);color:#374151}
.notice{padding:10px 12px;border-radius:12px;background:#fff;border:1px solid var(--line);color:var(--muted)}