:root {
    --primary: #1a3a6b;
    --primary-light: #2563eb;
    --primary-dark: #0f2347;
    --accent: #f59e0b;
    --accent-light: #fbbf24;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    --sidebar-w: 260px;
    --bg: #f0f4f8;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --radius: 12px;
    --transition: 0.3s ease;
}
* { margin:0; padding:0; box-sizing:border-box; }
body { font-family:'Inter',sans-serif; background:var(--bg); color:var(--text); font-size:14px; }
a { text-decoration:none; color:inherit; }

/* APP WRAPPER */
.app-wrapper { display:flex; min-height:100vh; }

/* SIDEBAR */
.sidebar { width:var(--sidebar-w); background:linear-gradient(160deg,var(--primary-dark) 0%,var(--primary) 100%); display:flex; flex-direction:column; position:fixed; top:0; left:0; height:100vh; z-index:1000; overflow-y:auto; overflow-x:hidden; transition:transform var(--transition); }
.sidebar-brand { padding:24px 20px; display:flex; align-items:center; gap:12px; border-bottom:1px solid rgba(255,255,255,0.1); }
.brand-icon { width:44px; height:44px; background:var(--accent); border-radius:10px; display:flex; align-items:center; justify-content:center; color:#fff; font-size:20px; flex-shrink:0; }
.brand-title { display:block; color:#fff; font-size:16px; font-weight:700; letter-spacing:0.5px; }
.brand-subtitle { display:block; color:rgba(255,255,255,0.5); font-size:10px; margin-top:2px; }
.sidebar-user { padding:16px 20px; border-bottom:1px solid rgba(255,255,255,0.1); display:flex; align-items:center; gap:12px; }
.user-avatar { width:40px; height:40px; border-radius:50%; background:rgba(255,255,255,0.15); display:flex; align-items:center; justify-content:center; color:#fff; font-size:16px; overflow:hidden; flex-shrink:0; }
.user-avatar img { width:100%; height:100%; object-fit:cover; }
.user-name { display:block; color:#fff; font-size:13px; font-weight:600; }
.user-role { display:block; color:rgba(255,255,255,0.5); font-size:11px; margin-top:2px; }
.sidebar-nav { padding:12px 0; flex:1; }
.nav-section-title { padding:12px 20px 4px; color:rgba(255,255,255,0.35); font-size:10px; font-weight:600; text-transform:uppercase; letter-spacing:1px; }
.nav-item { display:flex; align-items:center; gap:12px; padding:11px 20px; color:rgba(255,255,255,0.75); transition:all var(--transition); cursor:pointer; border-left:3px solid transparent; }
.nav-item:hover { background:rgba(255,255,255,0.08); color:#fff; border-left-color:var(--accent); }
.nav-item.active { background:rgba(255,255,255,0.12); color:#fff; border-left-color:var(--accent); font-weight:600; }
.nav-item i { width:18px; text-align:center; font-size:15px; }
.nav-logout:hover { background:rgba(239,68,68,0.15); border-left-color:#ef4444; }
.sidebar-overlay { display:none; position:fixed; inset:0; background:rgba(0,0,0,0.5); z-index:999; }

/* MAIN CONTENT */
.main-content { margin-left:var(--sidebar-w); flex:1; min-height:100vh; display:flex; flex-direction:column; }

/* TOPBAR */
.topbar { background:#fff; padding:0 24px; height:64px; display:flex; align-items:center; gap:16px; border-bottom:1px solid var(--border); position:sticky; top:0; z-index:100; box-shadow:0 2px 10px rgba(0,0,0,0.05); }
.sidebar-toggle { display:none; background:none; border:none; font-size:20px; cursor:pointer; color:var(--text-muted); padding:8px; border-radius:8px; }
.sidebar-toggle:hover { background:var(--bg); }
.topbar-title h1 { font-size:18px; font-weight:700; color:var(--text); flex:1; }
.topbar-actions { margin-left:auto; display:flex; align-items:center; gap:16px; }
.topbar-time { color:var(--text-muted); font-size:13px; font-weight:500; }
.topbar-user { display:flex; align-items:center; gap:8px; background:var(--bg); padding:8px 14px; border-radius:20px; color:var(--text); font-size:13px; font-weight:500; }
.topbar-user i { color:var(--primary); font-size:20px; }

/* PAGE CONTENT */
.page-content { padding:24px; flex:1; }

/* CARDS */
.card { background:var(--card-bg); border-radius:var(--radius); box-shadow:var(--shadow); overflow:hidden; margin-bottom:20px; }
.card-header { padding:18px 24px; border-bottom:1px solid var(--border); display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:10px; }
.card-title { font-size:15px; font-weight:700; color:var(--text); display:flex; align-items:center; gap:8px; }
.card-title i { color:var(--primary-light); }
.card-body { padding:24px; }

/* STATS */
.stats-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(200px,1fr)); gap:16px; margin-bottom:24px; }
.stat-card { background:#fff; border-radius:var(--radius); padding:20px 24px; box-shadow:var(--shadow); display:flex; align-items:center; gap:16px; transition:transform var(--transition); }
.stat-card:hover { transform:translateY(-3px); }
.stat-icon { width:52px; height:52px; border-radius:12px; display:flex; align-items:center; justify-content:center; font-size:22px; color:#fff; flex-shrink:0; }
.stat-icon.blue { background:linear-gradient(135deg,#2563eb,#1d4ed8); }
.stat-icon.green { background:linear-gradient(135deg,#10b981,#059669); }
.stat-icon.amber { background:linear-gradient(135deg,#f59e0b,#d97706); }
.stat-icon.red { background:linear-gradient(135deg,#ef4444,#dc2626); }
.stat-info { flex:1; }
.stat-value { font-size:28px; font-weight:800; color:var(--text); line-height:1; }
.stat-label { font-size:12px; color:var(--text-muted); margin-top:4px; }

/* TABLES */
.table-wrapper { overflow-x:auto; }
table { width:100%; border-collapse:collapse; }
thead th { background:var(--primary); color:#fff; padding:12px 16px; text-align:left; font-size:12px; font-weight:600; text-transform:uppercase; letter-spacing:0.5px; white-space:nowrap; }
thead th:first-child { border-radius:0; }
tbody tr { border-bottom:1px solid var(--border); transition:background var(--transition); }
tbody tr:hover { background:#f8fafc; }
tbody td { padding:12px 16px; color:var(--text); vertical-align:middle; }
.td-nowrap { white-space:nowrap; }

/* BADGES */
.badge { padding:4px 10px; border-radius:20px; font-size:11px; font-weight:600; display:inline-flex; align-items:center; gap:4px; }
.badge-success { background:#dcfce7; color:#166534; }
.badge-warning { background:#fef9c3; color:#854d0e; }
.badge-danger { background:#fee2e2; color:#991b1b; }
.badge-info { background:#dbeafe; color:#1e40af; }
.badge-secondary { background:#f1f5f9; color:#475569; }

/* BUTTONS */
.btn { display:inline-flex; align-items:center; gap:6px; padding:9px 18px; border:none; border-radius:8px; font-size:13px; font-weight:600; cursor:pointer; transition:all var(--transition); font-family:'Inter',sans-serif; text-decoration:none; }
.btn-sm { padding:6px 12px; font-size:12px; }
.btn-primary { background:var(--primary-light); color:#fff; }
.btn-primary:hover { background:var(--primary); transform:translateY(-1px); box-shadow:0 4px 12px rgba(37,99,235,0.3); }
.btn-success { background:var(--success); color:#fff; }
.btn-success:hover { background:#059669; transform:translateY(-1px); }
.btn-danger { background:var(--danger); color:#fff; }
.btn-danger:hover { background:#dc2626; transform:translateY(-1px); }
.btn-warning { background:var(--warning); color:#fff; }
.btn-warning:hover { background:#d97706; }
.btn-secondary { background:#e2e8f0; color:var(--text); }
.btn-secondary:hover { background:#cbd5e1; }
.btn-info { background:var(--info); color:#fff; }
.btn-info:hover { background:#2563eb; }
.btn-outline { background:transparent; border:1.5px solid var(--border); color:var(--text); }
.btn-outline:hover { background:var(--bg); }

/* FORMS */
.form-group { margin-bottom:18px; }
.form-label { display:block; margin-bottom:6px; font-size:13px; font-weight:600; color:var(--text); }
.form-label .required { color:var(--danger); }
.form-control { width:100%; padding:10px 14px; border:1.5px solid var(--border); border-radius:8px; font-size:13px; color:var(--text); background:#fff; transition:border-color var(--transition); font-family:'Inter',sans-serif; }
.form-control:focus { outline:none; border-color:var(--primary-light); box-shadow:0 0 0 3px rgba(37,99,235,0.1); }
select.form-control { cursor:pointer; }
textarea.form-control { resize:vertical; min-height:100px; }
.form-grid { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.form-full { grid-column:1/-1; }
.input-group { display:flex; }
.input-group .form-control { border-radius:8px 0 0 8px; }
.input-group-append .btn { border-radius:0 8px 8px 0; }

/* ALERTS */
.alert { padding:14px 18px; border-radius:10px; margin-bottom:16px; display:flex; align-items:flex-start; gap:10px; font-size:13px; font-weight:500; animation:slideDown 0.3s ease; }
.alert button { margin-left:auto; background:none; border:none; cursor:pointer; opacity:0.6; font-size:16px; }
.alert-success { background:#dcfce7; color:#166534; border:1px solid #bbf7d0; }
.alert-danger  { background:#fee2e2; color:#991b1b; border:1px solid #fecaca; }
.alert-info    { background:#dbeafe; color:#1e40af; border:1px solid #bfdbfe; }
@keyframes slideDown { from { opacity:0; transform:translateY(-10px); } to { opacity:1; transform:translateY(0); } }

/* SEARCH BAR */
.search-bar { display:flex; gap:8px; flex-wrap:wrap; align-items:flex-end; }
.search-bar .form-control { min-width:200px; }

/* PAGINATION */
.pagination { display:flex; gap:4px; justify-content:center; margin-top:20px; flex-wrap:wrap; }
.page-link { padding:8px 14px; border-radius:8px; border:1.5px solid var(--border); color:var(--text); font-size:13px; font-weight:500; transition:all var(--transition); cursor:pointer; }
.page-link:hover, .page-link.active { background:var(--primary-light); color:#fff; border-color:var(--primary-light); }

/* LOGIN PAGE */
.login-page { min-height:100vh; display:flex; align-items:center; justify-content:center; background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 50%,var(--primary-light) 100%); padding:20px; }
.login-box { background:#fff; border-radius:20px; padding:40px; width:100%; max-width:420px; box-shadow:0 25px 50px rgba(0,0,0,0.25); animation:fadeUp 0.5s ease; }
@keyframes fadeUp { from { opacity:0; transform:translateY(30px); } to { opacity:1; transform:translateY(0); } }
.login-logo { text-align:center; margin-bottom:28px; }
.login-logo .logo-icon { width:72px; height:72px; background:linear-gradient(135deg,var(--primary),var(--primary-light)); border-radius:18px; display:flex; align-items:center; justify-content:center; margin:0 auto 14px; font-size:32px; color:#fff; box-shadow:0 8px 24px rgba(26,58,107,0.3); }
.login-logo h2 { font-size:22px; font-weight:800; color:var(--text); }
.login-logo p { color:var(--text-muted); font-size:13px; margin-top:4px; }

/* DETAIL SECTIONS */
.detail-row { display:flex; padding:12px 0; border-bottom:1px solid var(--border); gap:16px; }
.detail-row:last-child { border-bottom:none; }
.detail-label { width:180px; flex-shrink:0; font-weight:600; color:var(--text-muted); font-size:13px; }
.detail-value { flex:1; color:var(--text); font-size:13px; }

/* ACTION BUTTONS */
.action-btns { display:flex; gap:4px; align-items:center; }

/* EMPTY STATE */
.empty-state { text-align:center; padding:60px 20px; color:var(--text-muted); }
.empty-state i { font-size:48px; margin-bottom:16px; opacity:0.3; }
.empty-state p { font-size:14px; }

/* RESPONSIVE */
@media (max-width: 768px) {
    .sidebar { transform:translateX(-100%); }
    .sidebar.open { transform:translateX(0); }
    .sidebar-overlay.show { display:block; }
    .main-content { margin-left:0; }
    .sidebar-toggle { display:flex; }
    .topbar-time { display:none; }
    .form-grid { grid-template-columns:1fr; }
    .stats-grid { grid-template-columns:1fr 1fr; }
}
@media (max-width: 480px) {
    .stats-grid { grid-template-columns:1fr; }
    .page-content { padding:16px; }
}