/* public/style.css */
:root{
  --bg:#f6f7fb;
  --card:#ffffff;
  --ink:#1a1f36;
  --muted:#6b7280;
  --brand:#2563eb;
  --border:#e5e7eb;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.6 system-ui,-apple-system,Segoe UI,Roboto,Ubuntu;}
.container{max-width:1100px;margin:24px auto;padding:0 16px}
.container.narrow{max-width:520px}
.nav{display:flex;justify-content:space-between;align-items:center;background:#fff;border-bottom:1px solid var(--border);padding:10px 16px;position:sticky;top:0}
.nav a{margin-left:12px;text-decoration:none;color:var(--ink);padding:6px 10px;border-radius:8px}
.nav a:hover{background:#eef2ff}
.nav-left{font-weight:700;color:var(--brand)}
.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px;margin:16px 0;box-shadow:0 1px 2px rgba(0,0,0,.04)}
h1,h2,h3{margin:8px 0 12px}
label{display:block;margin:8px 0 4px}
input,select,textarea{width:100%;padding:10px;border:1px solid var(--border);border-radius:10px;background:#fff}
input[type="checkbox"]{width:auto}
.btn{background:var(--brand);color:#fff;border:none;padding:10px 14px;border-radius:10px;cursor:pointer;margin-top:10px}
.btn:hover{opacity:.95}
.alert{padding:10px;border-radius:10px;margin-bottom:12px}
.alert-danger{background:#fee2e2;color:#991b1b}
.muted{color:var(--muted);font-size:12px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.hstack{display:flex;gap:8px;align-items:center}
table{width:100%;border-collapse:collapse}
th,td{border-bottom:1px solid var(--border);padding:8px;vertical-align:top}
thead th{position:sticky;top:48px;background:var(--bg)}
.big{font-size:28px;font-weight:800}