.loading{display:flex;justify-content:center;align-items:center;height:100vh;font-size:18px;color:#666}.main-container{display:flex;height:100vh}.sidebar{width:250px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:20px;overflow-y:auto}.sidebar-nav{list-style:none}.sidebar-nav li{margin:10px 0}.sidebar-nav a{color:#fff;text-decoration:none;display:block;padding:10px 15px;border-radius:5px;transition:background .3s}.sidebar-nav a:hover,.sidebar-nav a.active{background:#fff3}.main-content{flex:1;display:flex;flex-direction:column}.header{background:#fff;border-bottom:1px solid #ddd;padding:15px 30px;display:flex;justify-content:space-between;align-items:center}.content{flex:1;overflow-y:auto;padding:30px}.card{background:#fff;border-radius:8px;padding:20px;box-shadow:0 2px 4px #0000001a;margin-bottom:20px}.card-header{font-size:18px;font-weight:700;margin-bottom:20px;color:#333}.form-group{margin-bottom:20px}label{display:block;margin-bottom:5px;font-weight:500;color:#333}input,textarea,select{width:100%;padding:10px;border:1px solid #ddd;border-radius:5px;font-size:14px;font-family:inherit}input:focus,textarea:focus,select:focus{outline:none;border-color:#667eea;box-shadow:0 0 5px #667eea4d}textarea{resize:vertical;min-height:100px}.btn{padding:10px 20px;border:none;border-radius:5px;font-size:14px;cursor:pointer;transition:all .3s}.btn-primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.btn-secondary{background:#e0e0e0;color:#333}.btn-secondary:hover{background:#d0d0d0}.btn-danger{background:#f44336;color:#fff}.btn-danger:hover{background:#d32f2f}.btn-success{background:#4caf50;color:#fff}.btn-success:hover{background:#388e3c}.btn-info{background:#2196f3;color:#fff}.btn-info:hover{background:#1976d2}.btn:disabled{opacity:.6;cursor:not-allowed}.btn:disabled:hover{transform:none;box-shadow:none}.btn-group{display:flex;gap:10px}table{width:100%;border-collapse:collapse;margin-top:20px}th{background:#f5f5f5;padding:12px;text-align:left;font-weight:600;border-bottom:2px solid #ddd}td{padding:12px;border-bottom:1px solid #eee}tr:hover{background:#f9f9f9}.badge{display:inline-block;padding:4px 12px;border-radius:20px;font-size:12px;font-weight:600}.badge-success{background:#e8f5e9;color:#2e7d32}.badge-danger{background:#ffebee;color:#c62828}.badge-warning{background:#fff3e0;color:#e65100}.badge-info{background:#e3f2fd;color:#1565c0}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-bottom:20px}.stat-card{background:#fff;border-radius:8px;padding:20px;box-shadow:0 2px 4px #0000001a;text-align:center}.stat-label{color:#999;font-size:12px;font-weight:600;text-transform:uppercase;margin-bottom:10px}.stat-value{font-size:28px;font-weight:700;color:#667eea}.alert{padding:15px;border-radius:5px;margin-bottom:20px}.alert-success{background:#d4edda;color:#155724;border:1px solid #c3e6cb}.alert-error{background:#f8d7da;color:#721c24;border:1px solid #f5c6cb}.alert-warning{background:#fff3cd;color:#856404;border:1px solid #ffeaa7}.alert-info{background:#d1ecf1;color:#0c5460;border:1px solid #bee5eb}@media (max-width: 768px){.main-container{flex-direction:column}.sidebar{width:100%;display:flex}.sidebar-nav{display:flex;gap:10px}.stats-grid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}.content{padding:15px}}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal-content{background:#fff;border-radius:8px;padding:24px;width:90%;max-width:500px;box-shadow:0 4px 20px #00000026;position:relative;animation:modalFadeIn .3s ease-out}@keyframes modalFadeIn{0%{transform:translateY(-20px);opacity:0}to{transform:translateY(0);opacity:1}}.modal-header{font-size:20px;font-weight:700;margin-bottom:20px;color:#333;display:flex;justify-content:space-between;align-items:center}.modal-close{background:none;border:none;font-size:24px;cursor:pointer;color:#999}.modal-close:hover{color:#333}