*{box-sizing:border-box}
body{margin:0;background:#f4f6fb;color:#111827;font-family:Inter,Arial,sans-serif}
.app{display:flex;min-height:100vh}
.sidebar{width:260px;background:#0f172a;color:#fff;padding:24px;position:fixed;inset:0 auto 0 0}
.brand{display:flex;gap:12px;align-items:center;margin-bottom:28px}
.brand-mark{width:42px;height:42px;border-radius:14px;background:#fff;color:#0f172a;display:grid;place-items:center;font-weight:800}
.brand span{display:block;color:#94a3b8;font-size:12px;margin-top:3px}
.sidebar nav a{display:block;color:#cbd5e1;text-decoration:none;padding:12px 14px;border-radius:12px;margin-bottom:5px;font-size:14px}
.sidebar nav a:hover{background:#1e293b;color:#fff}
.main{margin-left:260px;width:calc(100% - 260px);padding:28px}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}
.topbar h1{margin:0;font-size:24px}
.topbar p{margin:5px 0 0;color:#64748b}
.user-pill{background:#fff;padding:10px 14px;border-radius:99px;box-shadow:0 8px 25px rgba(15,23,42,.06)}
.card{background:#fff;border-radius:22px;padding:22px;box-shadow:0 10px 30px rgba(15,23,42,.07);margin-bottom:20px}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat h3{margin:0;color:#64748b;font-size:13px}
.stat strong{display:block;margin-top:10px;font-size:26px}
.btn{display:inline-block;border:none;border-radius:12px;padding:10px 14px;text-decoration:none;cursor:pointer;font-weight:600}
.btn-primary{background:#111827;color:#fff}
.btn-light{background:#e5e7eb;color:#111827}
.btn-danger{background:#dc2626;color:#fff}
.table{width:100%;border-collapse:collapse;background:#fff;border-radius:18px;overflow:hidden}
.table th,.table td{padding:13px;border-bottom:1px solid #e5e7eb;text-align:left;font-size:14px}
.table th{background:#f8fafc;color:#475569}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.form-group label{display:block;margin-bottom:6px;font-size:13px;color:#475569;font-weight:700}
input,select,textarea{width:100%;border:1px solid #d1d5db;border-radius:12px;padding:11px;background:#fff}
.actions{display:flex;gap:8px;align-items:center}
.alert{padding:12px 14px;border-radius:12px;margin-bottom:15px}
.alert-success{background:#dcfce7;color:#166534}
.alert-danger{background:#fee2e2;color:#991b1b}
.login-wrap{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#0f172a,#334155)}
.login-box{width:380px;background:#fff;border-radius:24px;padding:30px;box-shadow:0 25px 70px rgba(0,0,0,.25)}
.login-box h2{margin-top:0}
@media(max-width:900px){.sidebar{position:static;width:100%}.app{display:block}.main{margin-left:0;width:100%}.grid,.form-grid{grid-template-columns:1fr}}