:root {
            --primary: #00ff9d;
            --secondary: #00b8ff;
            --dark: #121212;
            --darker: #0a0a0a;
            --light: #f0f0f0;
            --danger: #ff3860;
            --success: #00d1b2;
            --warning: #ffdd57;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background-color: var(--dark);
            color: var(--light);
            display: flex;
            min-height: 100vh;
        }
        
        .sidebar {
            width: 250px;
            background-color: rgba(10, 10, 10, 0.8);
            border-right: 1px solid rgba(0, 255, 157, 0.1);
            padding: 1.5rem;
            position: fixed;
            height: 100vh;
            z-index: 100;
        }
        
        .logo {
            text-align: center;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid rgba(0, 255, 157, 0.1);
        }
        
        .logo h2 {
            font-size: 1.5rem;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-transform: uppercase;
            letter-spacing: 2px;
        }
        
        .nav-menu {
            list-style: none;
        }
        
        .nav-item {
            margin-bottom: 0.5rem;
        }
        
        .nav-link {
            display: flex;
            align-items: center;
            padding: 0.8rem 1rem;
            color: var(--light);
            text-decoration: none;
            border-radius: 5px;
            transition: all 0.3s ease;
        }
        
        .nav-link:hover, .nav-link.active {
            background-color: rgba(0, 255, 157, 0.1);
            color: var(--primary);
        }
        
        .nav-link i {
            margin-right: 0.8rem;
            font-size: 1.2rem;
        }
        
        .main-content {
            flex: 1;
            margin-left: 250px;
            padding: 2rem;
        }
        
        .header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid rgba(0, 255, 157, 0.1);
        }
        
        .user-info {
            display: flex;
            align-items: center;
        }
        
        .user-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: rgba(0, 255, 157, 0.1);
            margin-right: 1rem;
            overflow: hidden;
        }
        
        .user-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        
        .user-name {
            font-size: 1.2rem;
            font-weight: bold;
        }
        
        .logout-btn {
            background-color: rgba(255, 56, 96, 0.1);
            color: var(--danger);
            border: none;
            padding: 0.5rem 1rem;
            border-radius: 5px;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .logout-btn:hover {
            background-color: rgba(255, 56, 96, 0.2);
        }
        
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin-bottom: 2rem;
        }
        
        .stat-card {
            background-color: rgba(10, 10, 10, 0.8);
            border: 1px solid rgba(0, 255, 157, 0.1);
            border-radius: 10px;
            padding: 1.5rem;
            transition: all 0.3s ease;
        }
        
        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 255, 157, 0.1);
            border-color: rgba(0, 255, 157, 0.3);
        }
        
        .stat-title {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 0.5rem;
        }
        
        .stat-value {
            font-size: 1.8rem;
            font-weight: bold;
            margin-bottom: 0.5rem;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        
        .stat-desc {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.5);
        }
        
        .card-primary {
            border-top: 3px solid var(--primary);
        }
        
        .card-secondary {
            border-top: 3px solid var(--secondary);
        }
        
        .card-success {
            border-top: 3px solid var(--success);
        }
        
        .card-warning {
            border-top: 3px solid var(--warning);
        }
        
        .recent-activity {
            background-color: rgba(10, 10, 10, 0.8);
            border: 1px solid rgba(0, 255, 157, 0.1);
            border-radius: 10px;
            padding: 1.5rem;
            margin-top: 2rem;
        }
        
        .section-title {
            font-size: 1.2rem;
            margin-bottom: 1rem;
            color: var(--primary);
            display: flex;
            align-items: center;
        }
        
        .section-title i {
            margin-right: 0.5rem;
        }
        
        .activity-list {
            list-style: none;
        }
        
        .activity-item {
            padding: 1rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            align-items: center;
        }
        
        .activity-item:last-child {
            border-bottom: none;
        }
        
        .activity-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: rgba(0, 255, 157, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 1rem;
            color: var(--primary);
        }
        
        .activity-content {
            flex: 1;
        }
        
        .activity-title {
            font-size: 0.9rem;
            margin-bottom: 0.2rem;
        }
        
        .activity-desc {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.6);
        }
        
        .activity-time {
            font-size: 0.7rem;
            color: rgba(255, 255, 255, 0.4);
        }
        
        /* Efectos futuristas */
        .glow-effect {
            position: relative;
            overflow: hidden;
        }
        
        .glow-effect::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: linear-gradient(
                to bottom right,
                rgba(0, 255, 157, 0),
                rgba(0, 255, 157, 0),
                rgba(0, 255, 157, 0.3)
            );
            transform: rotate(30deg);
            animation: glow 6s linear infinite;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        
        .glow-effect:hover::before {
            opacity: 0.3;
        }
        
        @keyframes glow {
            0% {
                transform: rotate(30deg) translate(-10%, -10%);
            }
            100% {
                transform: rotate(30deg) translate(10%, 10%);
            }
        }
        
        .no-activity {
            text-align: center;
            padding: 1rem;
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
        }