:root{
  --primary:#2563eb; --primary-dark:#1d4ed8; --primary-grad:linear-gradient(135deg,#2563eb,#7c3aed);
  --sidebar-bg:linear-gradient(180deg,#0f172a 0%,#1e293b 100%);
  --bg:#f1f5f9; --card:#ffffff; --text:#0f172a; --muted:#64748b; --border:#e2e8f0;
}
*{box-sizing:border-box}
body{margin:0;font-family:'Segoe UI','Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);font-size:14px}
.layout{display:flex;min-height:100vh}

/* Sidebar */
.sidebar{width:240px;background:var(--sidebar-bg);color:#cbd5e1;position:fixed;inset:0 auto 0 0;overflow-y:auto;z-index:1040;box-shadow:2px 0 12px rgba(0,0,0,.1)}
.sidebar .logo{padding:20px 18px;font-size:1.25rem;font-weight:700;color:#fff;display:flex;align-items:center;gap:10px;border-bottom:1px solid rgba(255,255,255,.08)}
.sidebar .logo i{background:var(--primary-grad);width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;box-shadow:0 4px 12px rgba(37,99,235,.4)}
.sidebar .logo small{font-size:.65rem;background:#10b981;padding:2px 6px;border-radius:4px;color:#fff;margin-left:6px;vertical-align:middle}
.sidebar ul{list-style:none;padding:12px 8px;margin:0}
.sidebar li.nav-section{padding:14px 14px 6px;font-size:.7rem;text-transform:uppercase;letter-spacing:1px;color:#64748b;font-weight:700}
.sidebar a{color:#cbd5e1;text-decoration:none;display:flex;align-items:center;gap:12px;padding:10px 14px;border-radius:8px;transition:all .2s;font-size:.92rem}
.sidebar a i{width:18px;text-align:center}
.sidebar a:hover{background:rgba(255,255,255,.06);color:#fff;transform:translateX(2px)}
.sidebar li.active a{background:var(--primary-grad);color:#fff;box-shadow:0 4px 12px rgba(37,99,235,.35)}

/* Layout */
.content{flex:1;margin-left:240px;min-width:0;display:flex;flex-direction:column}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;background:#fff;border-bottom:1px solid var(--border);box-shadow:0 1px 3px rgba(0,0,0,.04);position:sticky;top:0;z-index:100}
.topbar .brand{font-weight:700;font-size:1.05rem;color:var(--primary)}
.topbar .brand i{margin-right:6px}
.topbar .user{display:flex;align-items:center;gap:10px;font-size:.92rem}
.topbar .user .fa-user-circle{font-size:1.5rem;color:var(--primary)}
.sb-toggle{background:none;border:none;font-size:1.3rem;color:var(--primary);cursor:pointer;margin-right:8px}
.sidebar-backdrop{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:1030}
.page{padding:24px}

/* Cards */
.card-box{background:var(--card);border-radius:14px;padding:20px;box-shadow:0 1px 3px rgba(0,0,0,.04),0 1px 2px rgba(0,0,0,.06);border:1px solid var(--border);margin-bottom:18px}
.card-box:hover{box-shadow:0 4px 12px rgba(0,0,0,.08)}

/* Stat cards */
.stat-card{background:#fff;border-radius:14px;padding:18px;display:flex;justify-content:space-between;align-items:center;border:1px solid var(--border);transition:.2s;overflow:hidden;position:relative}
.stat-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--primary-grad)}
.stat-card:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,0,0,.08)}
.stat-card .lbl{font-size:.78rem;color:var(--muted);text-transform:uppercase;letter-spacing:.5px;font-weight:600}
.stat-card .num{font-size:1.8rem;font-weight:700;color:var(--text);margin-top:4px}
.stat-card .ico{width:50px;height:50px;display:flex;align-items:center;justify-content:center;border-radius:12px;background:var(--primary-grad);color:#fff;font-size:1.3rem;box-shadow:0 4px 10px rgba(37,99,235,.3)}
.stat-card.success::before{background:linear-gradient(135deg,#10b981,#059669)} .stat-card.success .ico{background:linear-gradient(135deg,#10b981,#059669);box-shadow:0 4px 10px rgba(16,185,129,.3)}
.stat-card.warning::before{background:linear-gradient(135deg,#f59e0b,#d97706)} .stat-card.warning .ico{background:linear-gradient(135deg,#f59e0b,#d97706);box-shadow:0 4px 10px rgba(245,158,11,.3)}
.stat-card.danger::before{background:linear-gradient(135deg,#ef4444,#dc2626)} .stat-card.danger .ico{background:linear-gradient(135deg,#ef4444,#dc2626);box-shadow:0 4px 10px rgba(239,68,68,.3)}
.stat-card.info::before{background:linear-gradient(135deg,#06b6d4,#0891b2)} .stat-card.info .ico{background:linear-gradient(135deg,#06b6d4,#0891b2);box-shadow:0 4px 10px rgba(6,182,212,.3)}

/* Tables */
.table{margin:0}
.table thead{background:#f8fafc}
.table thead th{font-size:.78rem;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);font-weight:700;border-bottom:2px solid var(--border)}
.table tbody tr{transition:.15s}
.table tbody tr:hover{background:#f8fafc}

/* Page header */
.page-header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;margin-bottom:18px;padding-bottom:14px;border-bottom:2px solid var(--border)}
.page-header h3{margin:0;font-weight:700;color:var(--text)}
.page-header h3 i{color:var(--primary);margin-right:8px}

/* Search bar */
.search-box{position:relative;max-width:320px}
.search-box input{padding-left:36px;border-radius:10px;border:1px solid var(--border);background:#fff}
.search-box .fa-search{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--muted)}
.search-box input:focus{box-shadow:0 0 0 3px rgba(37,99,235,.15);border-color:var(--primary)}

/* Buttons */
.btn-primary{background:var(--primary-grad);border:none;box-shadow:0 4px 10px rgba(37,99,235,.25)}
.btn-primary:hover{background:var(--primary-dark);box-shadow:0 6px 14px rgba(37,99,235,.4)}
.btn{border-radius:8px;font-weight:500}

/* Device card grid */
.dev-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.dev-card{background:#fff;border-radius:12px;padding:14px;border:1px solid var(--border);position:relative;transition:.2s}
.dev-card:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(0,0,0,.08)}
.dev-card .status-dot{width:10px;height:10px;border-radius:50%;display:inline-block;margin-right:6px}
.dev-card .status-dot.up{background:#10b981;box-shadow:0 0 0 4px rgba(16,185,129,.2)}
.dev-card .status-dot.down{background:#ef4444;box-shadow:0 0 0 4px rgba(239,68,68,.2);animation:pulse 1.5s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}

/* Chat list */
#userList li a{border-radius:8px;transition:.2s;color:var(--text)}
#userList li a:hover{background:#eff6ff;color:var(--primary)}

/* Print */
@media print{
  .sidebar,.topbar,.no-print{display:none !important}
  .content{margin-left:0}
  .page{padding:0}
  .card-box{box-shadow:none;border:none}
}

/* Responsive */
@media (max-width:991.98px){
  .sidebar{transform:translateX(-100%);transition:transform .25s}
  body.sb-open .sidebar{transform:translateX(0)}
  body.sb-open .sidebar-backdrop{display:block}
  .content{margin-left:0}
}
@media (max-width:575.98px){
  .page{padding:14px}
  .stat-card .num{font-size:1.4rem}
  .dev-grid{grid-template-columns:1fr}
}

/* Legacy monitor-jaringan classes */
.device-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.device-card{background:#fff;border-radius:12px;padding:14px;border:1px solid var(--border);transition:.2s;border-left:4px solid #94a3b8}
.device-card.up{border-left-color:#10b981}
.device-card.down{border-left-color:#ef4444;background:linear-gradient(135deg,#fef2f2,#fff)}
.device-card.unknown{border-left-color:#94a3b8}
.device-card:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(0,0,0,.08)}
.device-card .dot{width:10px;height:10px;border-radius:50%;display:inline-block;margin-right:6px;background:#94a3b8}
.device-card .dot.up{background:#10b981;box-shadow:0 0 0 4px rgba(16,185,129,.2)}
.device-card .dot.down{background:#ef4444;box-shadow:0 0 0 4px rgba(239,68,68,.2);animation:pulse 1.5s infinite}
.badge-status{font-size:.7rem;padding:3px 8px;border-radius:6px;font-weight:700;text-transform:uppercase}
.bs-up{background:#dcfce7;color:#166534}
.bs-down{background:#fee2e2;color:#991b1b}
.bs-warn{background:#fef3c7;color:#92400e}

/* Login */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1e3a8a 0%,#2563eb 50%,#7c3aed 100%);padding:20px;position:relative;overflow:hidden}
.login-wrap::before{content:"";position:absolute;width:600px;height:600px;background:radial-gradient(circle,rgba(255,255,255,.1),transparent);border-radius:50%;top:-200px;right:-200px}
.login-wrap::after{content:"";position:absolute;width:400px;height:400px;background:radial-gradient(circle,rgba(255,255,255,.08),transparent);border-radius:50%;bottom:-100px;left:-100px}
.login-box{background:#fff;border-radius:18px;padding:36px;width:100%;max-width:420px;box-shadow:0 25px 60px rgba(0,0,0,.3);position:relative;z-index:1}
.login-box .brand-ic{width:72px;height:72px;background:var(--primary-grad);border-radius:18px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.8rem;margin:0 auto 14px;box-shadow:0 10px 24px rgba(37,99,235,.4)}
.login-box h2{font-weight:700;font-size:1.5rem;margin-bottom:4px}
.login-box .sub{color:var(--muted);font-size:.9rem;margin-bottom:24px}
.login-box .form-control{padding:12px 14px;border-radius:10px}
.login-box .form-control:focus{box-shadow:0 0 0 3px rgba(37,99,235,.15);border-color:var(--primary)}
.login-box .btn-primary{padding:12px;border-radius:10px;font-weight:600}