:root {
            --primary-color: #059669;
            --secondary-color: #0d9488;
            --accent-color: #14b8a6;
            --background-color: #0c4a6e;
            --text-color: #f0fdf4;
            --font-family: Roboto, system-ui, sans-serif;
        }
        
        body {
            font-family: var(--font-family);
            background-color: var(--background-color);
            color: var(--text-color);
            margin: 0;
            padding: 0;
            min-height: 100vh;
        }
        
        .primary-btn {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 12px 24px;
            border-radius: 8px;
            cursor: pointer;
            font-family: var(--font-family);
            transition: all 0.3s ease;
        }
        
        .primary-btn:hover {
            background-color: var(--secondary-color);
            transform: translateY(-2px);
        }
        
        .secondary-btn {
            background-color: transparent;
            color: var(--primary-color);
            border: 2px solid var(--primary-color);
            padding: 12px 24px;
            border-radius: 8px;
            cursor: pointer;
            font-family: var(--font-family);
            transition: all 0.3s ease;
        }
        
        .secondary-btn:hover {
            background-color: var(--primary-color);
            color: white;
        }
        
        .accent {
            color: var(--accent-color);
        }
        
        .card {
            background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255,255,255,0.2);
            border-radius: 16px;
            padding: 24px;
            margin: 16px 0;
        }
        
        .header {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            padding: 20px;
            text-align: center;
            color: white;
        }
        
        .nav {
            display: flex;
            justify-content: center;
            gap: 20px;
            padding: 20px;
            background: rgba(0,0,0,0.2);
        }
        
        .nav-item {
            color: var(--text-color);
            text-decoration: none;
            padding: 8px 16px;
            border-radius: 4px;
            transition: background-color 0.3s ease;
        }
        
        .nav-item:hover {
            background-color: var(--primary-color);
            color: white;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }
        
        .grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
        }
        
        .chat-input {
            width: 100%;
            padding: 12px;
            border: 2px solid var(--primary-color);
            border-radius: 8px;
            background: rgba(255,255,255,0.1);
            color: var(--text-color);
            font-family: var(--font-family);
            font-size: 16px;
        }
        
        .chat-messages {
            height: 400px;
            overflow-y: auto;
            padding: 20px;
            background: rgba(0,0,0,0.2);
            border-radius: 8px;
            margin: 20px 0;
        }
        
        .message {
            margin: 10px 0;
            padding: 12px;
            border-radius: 8px;
            max-width: 80%;
        }
        
        .user-message {
            background: var(--primary-color);
            color: white;
            margin-left: auto;
        }
        
        .ai-message {
            background: rgba(255,255,255,0.1);
            color: var(--text-color);
        }
        
        .avatar-container {
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 20px auto;
            position: relative;
            animation: pulse 3s infinite;
        }
        
        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }
        
        .loading {
            display: inline-block;
            width: 20px;
            height: 20px;
            border: 3px solid rgba(255,255,255,0.3);
            border-radius: 50%;
            border-top-color: var(--primary-color);
            animation: spin 1s ease-in-out infinite;
        }
        
        @keyframes spin {
            to { transform: rotate(360deg); }
        }
        
        .admin-panel {
            background: rgba(0,0,0,0.3);
            border: 1px solid var(--primary-color);
            border-radius: 8px;
            padding: 20px;
            margin: 20px 0;
        }
        
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 15px;
            margin: 20px 0;
        }
        
        .stat-card {
            background: rgba(255,255,255,0.1);
            padding: 15px;
            border-radius: 8px;
            text-align: center;
        }
        
        .stat-value {
            font-size: 2em;
            font-weight: bold;
            color: var(--accent-color);
        }
        
        .login-form {
            max-width: 400px;
            margin: 50px auto;
            padding: 30px;
            background: rgba(255,255,255,0.1);
            border-radius: 16px;
            backdrop-filter: blur(10px);
        }
        
        .form-input {
            width: 100%;
            padding: 12px;
            margin: 10px 0;
            border: 2px solid rgba(255,255,255,0.3);
            border-radius: 8px;
            background: rgba(255,255,255,0.1);
            color: var(--text-color);
            font-family: var(--font-family);
        }
        
        .form-input:focus {
            outline: none;
            border-color: var(--primary-color);
        }