:root{--bg:#f4f6fb;--card:#ffffff;--muted:#6b7280;--text:#111827;--accent:#2563eb;--danger:#dc2626;--ok:#16a34a;--warn:#d97706;--border:rgba(17,24,39,.12);--shadow:0 10px 30px rgba(17,24,39,.08);}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif;background:var(--bg);color:var(--text);}
a{color:var(--accent);text-decoration:none}
.container{max-width:1100px;margin:0 auto;padding:20px}
.nav{display:flex;gap:14px;align-items:center;justify-content:space-between;padding:14px 18px;background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;box-shadow:0 6px 18px rgba(17,24,39,.06);}
.nav .links{display:flex;gap:10px;flex-wrap:wrap}
.brand{font-weight:700;letter-spacing:.3px}
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:16px;margin:14px 0;box-shadow:var(--shadow);}
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:12px}
.col-6{grid-column:span 6}
.col-4{grid-column:span 4}
.col-3{grid-column:span 3}
.col-12{grid-column:span 12}
@media (max-width:900px){.col-6,.col-4,.col-3{grid-column:span 12}}
h1{margin:0 0 8px;font-size:22px}
h2{margin:0 0 10px;font-size:16px;color:var(--muted);font-weight:600}
small, .muted{color:var(--muted)}
.table{width:100%;border-collapse:collapse;overflow:hidden;border-radius:14px;border:1px solid var(--border)}
.table th,.table td{padding:10px 10px;border-bottom:1px solid var(--border);vertical-align:top}
.table th{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);text-align:left;background:#f7f8fb;}
.badge{display:inline-flex;align-items:center;gap:8px;padding:4px 10px;border-radius:999px;border:1px solid var(--border);background:#f3f4f6;font-size:12px}
.badge.ok{border-color:rgba(49,196,141,.35);background:rgba(49,196,141,.12)}
.badge.warn{border-color:rgba(251,191,36,.35);background:#ffedd5}
.btn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--border);background:#fff;color:var(--text);padding:8px 12px;border-radius:12px;cursor:pointer}
.btn:hover{background:#f7f8fb}
.btn.primary{border-color:rgba(110,168,254,.45);background:rgba(110,168,254,.14)}
.btn.danger{border-color:rgba(255,107,107,.45);background:#fee2e2}
.input, select{width:100%;padding:10px 12px;border-radius:12px;border:1px solid var(--border);background:#fff;color:var(--text);outline:none}
label{display:block;margin:0 0 6px;font-size:12px;color:var(--muted)}
.row-actions{display:flex;gap:8px;flex-wrap:wrap}
.flash{padding:10px 12px;border-radius:12px;border:1px solid var(--border);background:#fff;margin:10px 0}
.flash.ok{border-color:rgba(49,196,141,.35);background:rgba(49,196,141,.12)}
.flash.err{border-color:rgba(255,107,107,.35);background:#fee2e2}
.footer{padding:20px 0;color:var(--muted);font-size:12px}
/* Bootstrap-like aliases (local, lightweight) */
.btn-primary{border-color:rgba(37,99,235,.35)!important;background:rgba(37,99,235,.10)!important;color:var(--text)!important}
.btn-danger{border-color:rgba(220,38,38,.35)!important;background:rgba(220,38,38,.10)!important}
.btn-success{border-color:rgba(22,163,74,.35)!important;background:rgba(22,163,74,.10)!important}
.btn-warning{border-color:rgba(217,119,6,.35)!important;background:rgba(217,119,6,.10)!important}
.form-control, .input{background:#fff}
.table{background:#fff}
.badge{background:#f3f4f6}