:root {
            --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            --success-color: #28a745;
            --danger-color: #dc3545;
            --warning-color: #ffc107;
            --info-color: #17a2b8;
        }

        body {
            /*background: linear-gradient(135deg, #edede8 0%, #cacaba 100%);*/
			/*background: #f8f8f2;*/
            min-height: 100vh;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        .tool-container {
            background: white;
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.4);
            overflow: hidden;
            margin: 2rem 0;
        }

        .tool-header {
            background: var(--primary-gradient);
            color: white;
            padding: 2rem;
            text-align: center;
            position: relative;
        }

        .tool-header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
            opacity: 0.3;
        }

        .tool-header h1 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            position: relative;
            z-index: 1;
        }

        .tool-header p {
            font-size: 1.1rem;
            opacity: 0.9;
            position: relative;
            z-index: 1;
        }

        .input-section {
            padding: 2rem;
            background: #f8f9fa;
            border-bottom: 1px solid #e9ecef;
        }

        .url-input-group {
            position: relative;
            margin-bottom: 1rem;
        }

        .url-input {
            border: 2px solid #e9ecef;
            border-radius: 50px;
            padding: 1rem 1.5rem;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
        }

        .url-input:focus {
            border-color: #667eea;
            box-shadow: 0 4px 20px rgba(102,126,234,0.3);
            outline: none;
        }

        .check-btn {
            background: var(--primary-gradient);
            border: none;
            border-radius: 50px;
            padding: 1rem 2rem;
            font-size: 1.1rem;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(102,126,234,0.4);
        }

        .check-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 25px rgba(102,126,234,0.5);
        }

        .progress-section {
            padding: 2rem;
            display: none;
            background: white;
        }

        .progress-info {
            text-align: center;
            margin-bottom: 1.5rem;
        }

        .progress-stats {
            display: flex;
            justify-content: space-around;
            margin-top: 1rem;
            flex-wrap: wrap;
        }

        .stat-item {
            text-align: center;
            padding: 0.5rem;
        }

        .stat-number {
            font-size: 1.8rem;
            font-weight: 700;
            display: block;
        }

        .stat-label {
            font-size: 0.9rem;
            color: #6c757d;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .results-section {
            padding: 2rem;
            display: none;
        }

        .results-header {
            display: flex;
            justify-content: between;
            align-items: center;
            margin-bottom: 1.5rem;
            flex-wrap: wrap;
        }

        .filter-tabs {
            display: flex;
            gap: 0.5rem;
            margin-bottom: 1rem;
            flex-wrap: wrap;
        }

        .filter-tab {
            padding: 0.5rem 1rem;
            border: 2px solid #e9ecef;
            background: white;
            border-radius: 25px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 0.9rem;
            font-weight: 500;
        }

        .filter-tab.active {
            background: var(--primary-gradient);
            color: white;
            border-color: transparent;
        }

        .link-item {
            background: white;
            border-radius: 10px;
            padding: 1.5rem;
            margin-bottom: 1rem;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            border-left: 4px solid #e9ecef;
            transition: all 0.3s ease;
        }

        .link-item:hover {
            transform: translateX(5px);
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
        }

        .link-item.success {
            border-left-color: var(--success-color);
        }

        .link-item.danger {
            border-left-color: var(--danger-color);
        }

        .link-item.warning {
            border-left-color: var(--warning-color);
        }

        .link-status {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 0.5rem;
        }

        .status-icon {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: white;
        }

        .link-url {
            font-family: 'Courier New', monospace;
            background: #f8f9fa;
            padding: 0.5rem;
            border-radius: 5px;
            font-size: 0.9rem;
            word-break: break-all;
            margin: 0.5rem 0;
        }

        .link-details {
            font-size: 0.9rem;
            color: #6c757d;
        }

        .spinner {
            width: 40px;
            height: 40px;
            border: 4px solid #f3f3f3;
            border-top: 4px solid #667eea;
            border-radius: 50%;
            animation: spin 1s linear infinite;
            margin: 0 auto;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .export-section {
            padding: 1rem 2rem;
            background: #f8f9fa;
            border-top: 1px solid #e9ecef;
            text-align: center;
        }

        .export-btn {
            background: #28a745;
            color: white;
            border: none;
            border-radius: 25px;
            padding: 0.7rem 1.5rem;
            margin: 0 0.5rem;
            transition: all 0.3s ease;
        }

        .export-btn:hover {
            background: #218838;
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .tool-header h1 {
                font-size: 2rem;
            }
            
            .progress-stats {
                flex-direction: column;
                gap: 1rem;
            }
            
            .filter-tabs {
                justify-content: center;
            }
        }

        .pulse {
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }