        :root {
            --primary: #4a6fa5;
            --secondary: #166088;
            --accent: #4fc3f7;
            --light: #f8f9fa;
            --dark: #212529;
            --success: #28a745;
            --danger: #dc3545;
            --warning: #ffc107;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--dark);
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
            margin: 0;
            padding: 0;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }
        
        header {
            text-align: center;
            padding: 40px 0;
            background: rgba(255, 255, 255, 0.9);
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            margin-bottom: 30px;
            background: linear-gradient(to right, rgba(255,255,255,0.9), rgba(255,255,255,0.7));
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        
        h1 {
            color: var(--secondary);
            font-size: 2.5rem;
            margin-bottom: 10px;
        }
        
        .subtitle {
            color: var(--primary);
            font-size: 1.2rem;
            margin-bottom: 30px;
        }
        
        .search-container {
            display: flex;
            justify-content: center;
            margin-bottom: 30px;
        }
        
        .search-box {
            display: flex;
            width: 100%;
            max-width: 600px;
        }
        
        #domain-input {
            flex: 1;
            padding: 15px 20px;
            border: 2px solid var(--primary);
            border-radius: 50px 0 0 50px;
            font-size: 1.1rem;
            outline: none;
            transition: all 0.3s;
        }
        
        #domain-input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(79, 195, 247, 0.3);
        }
        
        #check-button {
            padding: 0 30px;
            background: var(--primary);
            color: white;
            border: none;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: all 0.3s;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        #check-button:hover {
            background: var(--secondary);
        }
        
        #check-button i {
            margin-left: 8px;
        }
        
        .result-container {
            background: white;
            border-radius: 15px;
            padding: 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            margin-bottom: 30px;
            display: none;
            animation: fadeIn 0.5s ease-in-out;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .result-header {
            display: flex;
            align-items: center;
            margin-bottom: 20px;
            padding-bottom: 15px;
            border-bottom: 1px solid #eee;
        }
        
        .domain-name {
            font-size: 1.5rem;
            font-weight: bold;
            margin-right: 15px;
        }
        
        .status-badge {
            padding: 5px 15px;
            border-radius: 50px;
            font-weight: bold;
            font-size: 0.9rem;
        }
        
        .status-blocked {
            background-color: var(--danger);
            color: white;
        }
        
        .status-ok {
            background-color: var(--success);
            color: white;
        }
        
        .status-warning {
            background-color: var(--warning);
            color: var(--dark);
        }
        
        .result-details {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
        }
        
        .detail-card {
            background: #f8f9fa;
            border-radius: 10px;
            padding: 15px;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
        }
        
        .detail-title {
            font-size: 0.9rem;
            color: #6c757d;
            margin-bottom: 5px;
        }
        
        .detail-value {
            font-size: 1.1rem;
            font-weight: bold;
            color: var(--dark);
        }
        
        .stats-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            margin-bottom: 30px;
        }
        
        .stat-card {
            background: white;
            border-radius: 15px;
            padding: 20px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            text-align: center;
            transition: transform 0.3s;
        }
        
        .stat-card:hover {
            transform: translateY(-5px);
        }
        
        .stat-value {
            font-size: 2.5rem;
            font-weight: bold;
            color: var(--primary);
            margin: 10px 0;
        }
        
        .stat-title {
            color: #6c757d;
            font-size: 1rem;
        }
        
        .loading {
            display: none;
            text-align: center;
            padding: 30px;
        }
        
        .spinner {
            border: 5px solid #f3f3f3;
            border-top: 5px solid var(--primary);
            border-radius: 50%;
            width: 50px;
            height: 50px;
            animation: spin 1s linear infinite;
            margin: 0 auto 20px;
        }
        
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        
        footer {
            text-align: center;
            padding: 20px;
            color: #6c757d;
            font-size: 0.9rem;
        }
        
        .error-message {
            color: var(--danger);
            background: rgba(220, 53, 69, 0.1);
            padding: 15px;
            border-radius: 10px;
            margin-bottom: 20px;
            display: none;
        }
        
        .tabs {
            display: flex;
            margin-bottom: 20px;
            border-bottom: 1px solid #ddd;
        }
        
        .tab {
            padding: 10px 20px;
            cursor: pointer;
            border-bottom: 3px solid transparent;
            transition: all 0.3s;
        }
        
        .tab.active {
            border-bottom: 3px solid var(--primary);
            color: var(--primary);
            font-weight: bold;
        }
        
        .tab-content {
            display: none;
        }
        
        .tab-content.active {
            display: block;
        }
        
        @media (max-width: 768px) {
            .search-box {
                flex-direction: column;
            }
            
            #domain-input {
                border-radius: 50px;
                margin-bottom: 10px;
            }
            
            #check-button {
                border-radius: 50px;
                padding: 15px;
            }
            
            .result-details {
                grid-template-columns: 1fr;
            }
            
            .stats-container {
                grid-template-columns: 1fr;
            }
        }