:root{
  --blue:#1e63ff; --blue-d:#1a55d6; --blue-l:#e8efff;
  --green:#10b981; --red:#ef4444; --amber:#f59e0b;
  --bg:#f4f7fb; --card:#fff; --text:#0f172a; --muted:#64748b; --border:#e5edf7;
  --shadow:0 6px 24px -10px rgba(30,99,255,.18);
  --radius:14px;
}
*{box-sizing:border-box}
html,body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:var(--bg)}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
code{background:#eef3fb;padding:2px 6px;border-radius:6px;font-size:.9em}

.container{max-width:1100px;margin:0 auto;padding:24px 18px}
.row{display:flex;align-items:center}
.row.gap{gap:10px}
.row.between{justify-content:space-between}
.row.wrap{flex-wrap:wrap}
.center{text-align:center}
.muted{color:var(--muted)}
.small{font-size:.85rem}

.topbar{background:#fff;border-bottom:1px solid var(--border);box-shadow:0 1px 0 rgba(0,0,0,.02)}
.topbar .brand{font-weight:700;color:var(--blue);font-size:1.05rem}
.topbar nav a{color:var(--text);padding:8px 10px;border-radius:8px}
.topbar nav a:hover{background:var(--blue-l);text-decoration:none}

.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);margin:14px 0}
.card.narrow{max-width:560px;margin:24px auto}

.btn{display:inline-block;background:#fff;color:var(--text);border:1px solid var(--border);padding:9px 14px;border-radius:10px;cursor:pointer;font-weight:500;transition:all .15s}
.btn:hover{border-color:var(--blue);color:var(--blue)}
.btn.small{padding:6px 10px;font-size:.85rem}
.btn.block{width:100%}
.btn-primary{background:var(--blue);color:#fff;border-color:var(--blue)}
.btn-primary:hover{background:var(--blue-d);color:#fff}
.btn.ghost{background:transparent}
.btn.green{background:var(--green);border-color:var(--green);color:#fff}
.btn.red{background:var(--red);border-color:var(--red);color:#fff}
.btn.amber{background:var(--amber);border-color:var(--amber);color:#fff}

.form label{display:block;margin:10px 0;font-weight:500}
.form input,.form select,.form textarea,.filters input,.filters select{
  width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:#fff;font:inherit;margin-top:6px;outline:none;transition:border-color .15s
}
.form input:focus,.form select:focus,.form textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-l)}
.filters{margin:14px 0}
.filters input,.filters select{margin-top:0;flex:1;min-width:140px}

.table-wrap{overflow-x:auto}
.table{width:100%;border-collapse:collapse;margin-top:8px;font-size:.92rem}
.table th,.table td{padding:10px 12px;border-bottom:1px solid var(--border);text-align:left;vertical-align:middle}
.table th{background:#f8fbff;color:var(--blue);font-weight:600}
.table tr:hover td{background:#fafcff}

.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:.78rem;font-weight:600;text-transform:uppercase;letter-spacing:.4px}
.badge.active{background:#d1fae5;color:#065f46}
.badge.blocked,.badge.red{background:#fee2e2;color:#991b1b}
.badge.expired{background:#fef3c7;color:#92400e}

.alert{padding:10px 14px;border-radius:10px;margin:10px 0;background:var(--blue-l);color:var(--blue-d)}
.alert.error{background:#fee2e2;color:#991b1b}
.alert.ok{background:#d1fae5;color:#065f46}

.grid.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.stat{display:flex;flex-direction:column;padding:14px}
.stat span{color:var(--muted);font-size:.85rem}
.stat b{font-size:1.6rem;color:var(--blue);margin-top:4px}
.stat.green b{color:var(--green)}
.stat.red b{color:var(--red)}
.stat.amber b{color:var(--amber)}

.pagination{margin-top:14px;display:flex;gap:6px;flex-wrap:wrap;justify-content:center}

.auth-body{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#e8efff 0%,#f4f7fb 100%)}
.auth-card{width:100%;max-width:380px}
.auth-card .brand{color:var(--blue);margin:0 0 4px}

@media (max-width:720px){
  .grid.stats{grid-template-columns:repeat(2,1fr)}
  .topbar nav .muted{display:none}
}