:root{--primary: #1a365d;--primary-light: #2b6cb0;--sidebar-width: 260px;--header-height: 60px;--gray-50: #f7fafc;--gray-100: #edf2f7;--gray-200: #e2e8f0;--gray-300: #cbd5e0;--gray-400: #a0aec0;--gray-500: #718096;--gray-600: #4a5568;--gray-700: #2d3748;--gray-800: #1a202c;--white: #ffffff;--accent: #38a169;--danger: #e53e3e;--warning: #d69e2e;--radius: 8px;--shadow: 0 1px 3px rgba(0, 0, 0, .1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Arial,sans-serif;color:var(--gray-800);background:var(--gray-50)}.login-layout{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary) 0%,var(--primary-light) 100%)}.login-card{background:var(--white);border-radius:12px;padding:48px;width:100%;max-width:420px;text-align:center;box-shadow:0 10px 25px #00000026}.login-card h1{font-size:22px;color:var(--primary);margin-bottom:8px}.login-card .subtitle{color:var(--gray-500);font-size:14px;margin-bottom:32px}.login-card .badge{display:inline-block;background:var(--gray-100);color:var(--gray-600);font-size:12px;padding:4px 12px;border-radius:20px;margin-bottom:24px}.btn-microsoft{display:inline-flex;align-items:center;justify-content:center;gap:12px;width:100%;padding:14px 24px;background:var(--white);border:2px solid var(--gray-200);border-radius:var(--radius);font-size:15px;font-weight:600;color:var(--gray-700);cursor:pointer;transition:all .2s}.btn-microsoft:hover{border-color:var(--primary-light);background:#2b6cb008}.btn-microsoft svg{width:21px;height:21px}.admin-layout{display:flex;min-height:100vh}.admin-sidebar{width:var(--sidebar-width);background:var(--primary);color:var(--white);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:10}.sidebar-logo{padding:20px 24px;border-bottom:1px solid rgba(255,255,255,.1)}.sidebar-logo h1{font-size:18px;font-weight:700}.sidebar-logo p{font-size:11px;opacity:.6;margin-top:2px}.sidebar-nav{flex:1;padding:16px 12px;display:flex;flex-direction:column;gap:4px}.sidebar-nav a{display:flex;align-items:center;gap:12px;padding:10px 16px;border-radius:6px;color:#ffffffb3;text-decoration:none;font-size:14px;font-weight:500;transition:all .15s}.sidebar-nav a:hover{background:#ffffff1a;color:var(--white)}.sidebar-nav a.active{background:#ffffff26;color:var(--white);font-weight:600}.sidebar-nav .nav-icon{font-size:18px;width:24px;text-align:center}.sidebar-section{font-size:11px;text-transform:uppercase;letter-spacing:1px;opacity:.4;padding:16px 16px 8px}.sidebar-user{padding:16px 20px;border-top:1px solid rgba(255,255,255,.1);display:flex;align-items:center;gap:12px}.sidebar-user-avatar{width:36px;height:36px;border-radius:50%;background:#fff3;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:14px}.sidebar-user-info{flex:1}.sidebar-user-name{font-size:13px;font-weight:600}.sidebar-user-email{font-size:11px;opacity:.6}.admin-main{flex:1;margin-left:var(--sidebar-width);padding:32px}.admin-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:32px}.admin-header h2{font-size:24px;font-weight:700;color:var(--primary)}.btn-logout{background:none;border:1px solid var(--gray-300);border-radius:6px;padding:8px 16px;font-size:13px;color:var(--gray-600);cursor:pointer}.btn-logout:hover{border-color:var(--danger);color:var(--danger)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px;margin-bottom:32px}.stat-card{background:var(--white);border-radius:12px;padding:24px;box-shadow:var(--shadow);border:1px solid var(--gray-100)}.stat-card .stat-icon{font-size:28px;margin-bottom:12px}.stat-card .stat-value{font-size:28px;font-weight:700;color:var(--primary)}.stat-card .stat-label{font-size:13px;color:var(--gray-500);margin-top:4px}.admin-table-wrapper{background:var(--white);border-radius:12px;box-shadow:var(--shadow);border:1px solid var(--gray-100);overflow:hidden}.admin-table-header{padding:20px 24px;border-bottom:1px solid var(--gray-100);display:flex;justify-content:space-between;align-items:center}.admin-table-header h3{font-size:16px;font-weight:600}table.admin-table{width:100%;border-collapse:collapse}table.admin-table th{text-align:left;padding:12px 24px;font-size:12px;text-transform:uppercase;letter-spacing:.5px;color:var(--gray-500);background:var(--gray-50);border-bottom:1px solid var(--gray-200)}table.admin-table td{padding:14px 24px;font-size:14px;border-bottom:1px solid var(--gray-100)}table.admin-table tr:hover td{background:var(--gray-50)}.badge{display:inline-block;padding:3px 10px;border-radius:12px;font-size:12px;font-weight:600}.badge-green{background:#f0fff4;color:#38a169}.badge-yellow{background:#fefcbf;color:#d69e2e}.badge-red{background:#fff5f5;color:#e53e3e}.badge-blue{background:#ebf8ff;color:#2b6cb0}.spinner{display:inline-block;width:24px;height:24px;border:3px solid var(--gray-200);border-radius:50%;border-top-color:var(--primary-light);animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-center{display:flex;justify-content:center;align-items:center;min-height:60vh}