:root{
  --brand:#0f766e;
  --brand2:#22c55e;
  --ink:#0b1220;
  --muted:#5b6475;
  --bg:#f4f8f7;
  --card:#ffffff;
  --border:#e6eaef;
  --danger:#dc2626;
  --warn:#f59e0b;
  --shadow:0 18px 40px rgba(15, 23, 42, 0.08);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color:var(--ink);
  background:
    radial-gradient(900px 260px at 10% -10%, rgba(34,197,94,.18), transparent 60%),
    radial-gradient(900px 260px at 90% -10%, rgba(15,118,110,.18), transparent 60%),
    var(--bg);
}
.container{max-width:1040px;margin:0 auto;padding:18px}

/* Top bar */
.nav{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:14px 18px;
  background:rgba(255,255,255,.85);
  border-bottom:1px solid var(--border);
  backdrop-filter:saturate(180%) blur(10px);
  position:sticky;top:0;z-index:10;
}
.brand{display:flex;gap:10px;align-items:center;text-decoration:none}
.logo{
  width:34px;height:34px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand),var(--brand2));
  box-shadow:0 10px 20px rgba(15,118,110,.25);
}
.brand b{color:var(--ink);font-size:15px;letter-spacing:.2px}
.nav a{color:var(--brand);text-decoration:none;font-weight:700}
.nav .links{display:flex;align-items:center;gap:12px;flex-wrap:wrap}

.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:18px;
  padding:16px;
  margin:14px 0;
  box-shadow:var(--shadow);
}
.h1{font-size:20px;margin:4px 0 10px}
.h2{font-size:16px;margin:4px 0 10px}
.small{color:var(--muted);font-size:13px;line-height:1.4}

.grid{display:grid;grid-template-columns:1fr;gap:14px}
@media(min-width:860px){.grid-2{grid-template-columns:1fr 1fr}.grid-3{grid-template-columns:1fr 1fr 1fr}}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;
  background:linear-gradient(135deg,var(--brand),#0ea5a4);
  color:#fff;
  padding:10px 14px;
  border-radius:12px;
  text-decoration:none;
  font-weight:800;
  cursor:pointer;
  box-shadow:0 12px 26px rgba(15,118,110,.22);
}
.btn:hover{filter:brightness(1.03)}
.btn.secondary{background:#fff;color:var(--brand);border-color:rgba(15,118,110,.25);box-shadow:none}
.btn.danger{background:linear-gradient(135deg,var(--danger),#ef4444)}

.input, select, textarea{
  width:100%;
  padding:11px 12px;
  border:1px solid var(--border);
  border-radius:12px;
  background:#fff;
  outline:none;
}
.input:focus, select:focus, textarea:focus{border-color:rgba(15,118,110,.55);box-shadow:0 0 0 4px rgba(15,118,110,.12)}

.row{display:grid;grid-template-columns:1fr;gap:12px}
@media(min-width:700px){.row-2{grid-template-columns:1fr 1fr}.row-3{grid-template-columns:1fr 1fr 1fr}.row-4{grid-template-columns:1fr 1fr 1fr 1fr}}

.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:800}
.badge.ok{background:rgba(34,197,94,.14);color:#166534}
.badge.booked{background:rgba(220,38,38,.12);color:#991b1b}
.badge.cancelled{background:rgba(148,163,184,.25);color:#334155}

.slot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  border:1px solid var(--border);
  border-radius:16px;
  padding:12px;
  margin-top:10px;
}
.slot.available{border-color:rgba(34,197,94,.55);background:rgba(34,197,94,.05)}
.slot.booked{border-color:rgba(220,38,38,.45);background:rgba(220,38,38,.04)}
.slot.cancelled{border-color:rgba(148,163,184,.6);background:rgba(148,163,184,.12)}

.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:10px;border-bottom:1px solid var(--border);text-align:left;font-size:14px;vertical-align:top}
.table th{font-size:12px;color:#334155;text-transform:uppercase;letter-spacing:.05em}

.alert{padding:10px 12px;border-radius:14px;margin:10px 0}
.alert.ok{background:rgba(34,197,94,.10);border:1px solid rgba(34,197,94,.25)}
.alert.err{background:rgba(220,38,38,.08);border:1px solid rgba(220,38,38,.22)}

.kpi{display:flex;flex-direction:column;gap:4px}
.kpi .v{font-size:22px;font-weight:900}
.kpi .l{font-size:12px;color:var(--muted);font-weight:700}

.footer{padding:22px 0;color:var(--muted);font-size:12px;text-align:center}