:root {
    --bg: #0f1115;
    --surface: #171a21;
    --surface-2: #1f232d;
    --border: #2a2f3a;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --primary: #ef4444;
    --primary-fg: #fff;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
}
* { box-sizing: border-box; }
html, body { margin:0; padding:0; font-family: system-ui, -apple-system, sans-serif; background:var(--bg); color:var(--text); }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.boot { display:flex; align-items:center; justify-content:center; min-height:100vh; }
.boot__spinner { width:32px; height:32px; border:3px solid var(--border); border-top-color:var(--primary); border-radius:50%; animation:spin 1s linear infinite; }
@keyframes spin { to { transform:rotate(360deg); } }

.master-shell { display:grid; grid-template-columns: 240px 1fr; grid-template-rows: 56px 1fr; min-height:100vh; grid-template-areas: "side top" "side main"; }
.master-shell__side { grid-area:side; background:var(--surface); border-right:1px solid var(--border); padding:1rem .75rem; }
.master-shell__top { grid-area:top; background:var(--surface); border-bottom:1px solid var(--border); display:flex; align-items:center; padding:0 1rem; gap:.75rem; }
.master-shell__main { grid-area:main; padding:1.25rem; overflow:auto; }

.master-brand { font-size:1.1rem; font-weight:700; color:var(--primary); margin-bottom:1rem; }
.nav-item { display:block; padding:.5rem .75rem; color:var(--text); border-radius:6px; margin-bottom:.15rem; }
.nav-item:hover { background: var(--surface-2); text-decoration:none; }
.nav-item.is-active { background: var(--primary); color: var(--primary-fg); }

.card { background:var(--surface); border:1px solid var(--border); border-radius:8px; padding:1rem; margin-bottom:1rem; }
.card__title { font-size:1rem; font-weight:600; margin:0 0 .75rem; }
.btn { display:inline-flex; align-items:center; gap:.35rem; padding:.4rem .8rem; border:1px solid var(--border); background:var(--surface-2); color:var(--text); border-radius:6px; cursor:pointer; font-size:.9rem; }
.btn:hover { border-color:var(--primary); }
.btn--primary { background:var(--primary); color:var(--primary-fg); border-color:var(--primary); }
.btn--danger  { background:var(--danger);  color:#fff; border-color:var(--danger); }
.btn--ghost   { background:transparent; }
.btn--sm { padding:.2rem .45rem; font-size:.8rem; }

.form-control { width:100%; padding:.4rem .6rem; background:var(--surface-2); border:1px solid var(--border); color:var(--text); border-radius:6px; font-size:.9rem; }
.form-group { margin-bottom:.75rem; }
.form-label { display:block; font-size:.85rem; color:var(--muted); margin-bottom:.25rem; }
.grid { display:grid; gap:.75rem; }
.grid--2 { grid-template-columns: 1fr 1fr; }
.grid--3 { grid-template-columns: 1fr 1fr 1fr; }

table { width:100%; border-collapse: collapse; }
th, td { text-align:left; padding:.5rem; border-bottom:1px solid var(--border); font-size:.9rem; }
th { color: var(--muted); font-weight:600; }

.flex { display:flex; }
.gap-1 { gap:.35rem; }
.gap-2 { gap:.75rem; }
.mt-1 { margin-top:.5rem; }
.mt-2 { margin-top:1rem; }
.mb-1 { margin-bottom:.5rem; }
.mb-2 { margin-bottom:1rem; }

.badge { display:inline-block; padding:.15rem .5rem; border-radius:999px; background:var(--surface-2); font-size:.75rem; color:var(--muted); }
.badge--success { background:var(--success); color:#fff; }
.badge--warning { background:var(--warning); color:#000; }
.badge--danger  { background:var(--danger);  color:#fff; }

#toasts { position:fixed; top:1rem; right:1rem; z-index:9999; display:flex; flex-direction:column; gap:.5rem; }
.toast { padding:.6rem 1rem; border-radius:6px; background:var(--surface); border:1px solid var(--border); color:var(--text); }
.toast--success { border-color:var(--success); }
.toast--error   { border-color:var(--danger); }

.login-center { min-height:100vh; display:flex; align-items:center; justify-content:center; }
.login-box { width:380px; background:var(--surface); border:1px solid var(--border); border-radius:10px; padding:2rem; }
.login-box h1 { margin:0 0 1rem; font-size:1.2rem; color:var(--primary); }