:root{--primary:#2563eb;--dark:#172033;--bg:#f4f7fb;--border:#dce3ed;--danger:#dc2626;--success:#16844b;--sidebar:270px}*{box-sizing:border-box}body{margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;background:var(--bg);color:#1f2937}a{text-decoration:none;color:inherit}.sidebar{position:fixed;z-index:20;left:0;top:0;bottom:0;width:var(--sidebar);display:flex;flex-direction:column;background:linear-gradient(180deg,#172033,#101827);color:#fff;padding:22px 16px;box-shadow:8px 0 28px #1720331f}.brand{display:flex;align-items:center;gap:11px;padding:0 8px 22px;font-weight:800;font-size:20px}.brand-icon{display:grid;place-items:center;width:37px;height:37px;border-radius:10px;background:linear-gradient(135deg,#4f8cff,#2563eb);box-shadow:0 7px 16px #0d49bd66}.user-panel{display:flex;align-items:center;gap:11px;margin-bottom:22px;padding:14px 11px;border:1px solid #ffffff17;border-radius:12px;background:#ffffff0a}.avatar{display:grid;place-items:center;flex:0 0 38px;height:38px;border-radius:50%;background:#315387;font-weight:800}.user-panel strong,.user-panel small{display:block}.user-panel strong{max-width:155px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px}.user-panel small{color:#9fb0ca;margin-top:3px}.nav{display:flex;flex:1;flex-direction:column;gap:5px}.nav a{display:flex;align-items:center;gap:12px;padding:11px 13px;border-radius:9px;color:#c7d1e2;font-weight:600;font-size:14px;transition:.18s}.nav a span{display:inline-grid;width:21px;place-items:center;font-size:18px}.nav a:hover,.nav a.active{background:#2b67d9;color:#fff;transform:translateX(2px)}.nav-label{margin:19px 12px 7px;color:#74859f;font-size:10px;font-weight:800;letter-spacing:1.3px;text-transform:uppercase}.logout-form button{display:flex;width:100%;gap:12px;align-items:center;background:#ffffff0a;color:#c7d1e2;border:1px solid #ffffff12}.logout-form button:hover{background:#dc2626;color:#fff}.container{max-width:1250px;margin:0 auto;padding:32px 28px 32px calc(var(--sidebar) + 32px)}.card{background:#fff;border:1px solid var(--border);border-radius:12px;padding:22px;box-shadow:0 4px 18px #1e293b0d;margin-bottom:20px}.login{max-width:430px;margin:10vh auto}.login h1{margin-top:0}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px}.stat strong{display:block;font-size:30px;color:var(--primary);margin-top:7px}label{display:block;font-weight:650;margin:12px 0 6px}input,select,textarea{width:100%;padding:11px;border:1px solid #cbd5e1;border-radius:7px;background:#fff}button,.btn{display:inline-block;border:0;border-radius:7px;padding:11px 16px;background:var(--primary);color:#fff;font-weight:700;cursor:pointer}.btn-light{background:#e7edf6;color:#26344d}.btn-danger{background:var(--danger)}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:12px;border-bottom:1px solid var(--border)}th{color:#607087;font-size:13px;text-transform:uppercase}.badge{padding:5px 9px;border-radius:99px;background:#e8efff;color:#2457bd;font-size:12px;font-weight:700}.alert{padding:13px 16px;border-radius:8px;margin-bottom:18px}.alert-success{background:#e5f7ed;color:var(--success)}.alert-error{background:#fee9e8;color:#a51d1d}.row{display:grid;grid-template-columns:1fr 1fr;gap:16px}.actions{display:flex;gap:8px;align-items:end;margin-top:16px}.muted{color:#718096;font-size:14px}@media(max-width:850px){.sidebar{position:relative;width:100%;min-height:auto}.nav{display:grid;grid-template-columns:repeat(2,1fr)}.nav-label{grid-column:1/-1}.logout-form{margin-top:12px}.container{padding:24px 16px}.row{grid-template-columns:1fr}.card{overflow-x:auto}}