:root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --secondary: #1d3557;
            --accent: #457b9d;
            --light: #f1faee;
            --dark: #212529;
            --gray: #6c757d;
            --light-gray: #e9ecef;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Open Sans', sans-serif;
            color: var(--dark);
            line-height: 1.6;
            background-color: #f8f9fa;
        }
        
        h1, h2, h3, h4, h5, h6 {
            font-family: 'Montserrat', sans-serif;
            font-weight: 700;
        }
        
        /* Header Styles */
        .top-header {
            background-color: var(--secondary);
            padding: 10px 0;
            font-size: 14px;
            color: #fff;
        }
        
        .top-header a {
            color: #fff;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .top-header a:hover {
            color: var(--primary);
        }
        
        .query-btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 8px 20px;
            border-radius: 5px;
            font-size: 14px;
            font-weight: 600;
            transition: all 0.3s;
        }
        
        .query-btn:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(230, 57, 70, 0.3);
        }
        
        .main-header {
            background-color: #fff;
            padding: 15px 0;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        
        .logo {
            font-size: 28px;
            font-weight: 800;
            color: var(--secondary);
            text-decoration: none;
            display: flex;
            align-items: center;
        }
        
        .logo i {
            margin-right: 10px;
            font-size: 32px;
            color: var(--primary);
        }
        
        .logo span {
            color: var(--primary);
        }
        
        .nav-link {
            color: var(--dark);
            font-weight: 600;
            margin: 0 12px;
            transition: all 0.3s;
            position: relative;
            font-size: 16px;
        }
        
        .nav-link:after {
            content: '';
            position: absolute;
            width: 0;
            height: 3px;
            bottom: 0;
            left: 0;
            background-color: var(--primary);
            transition: width 0.3s;
        }
        
        .nav-link:hover, .nav-link.active {
            color: var(--primary);
        }
        
        .nav-link:hover:after, .nav-link.active:after {
            width: 100%;
        }
        
        .header-phone {
            font-weight: 700;
            color: var(--dark);
            display: flex;
            align-items: center;
            font-size: 18px;
        }
        
        .header-phone i {
            margin-right: 8px;
            color: var(--primary);
            font-size: 20px;
        }
        
        /* Hero Section */
        .hero-section {
            background: linear-gradient(rgba(29, 53, 87, 0.85), rgba(29, 53, 87, 0.9)), url('https://images.unsplash.com/photo-1492144534655-ae79c964c9d7?ixlib=rb-4.0.3&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=1200&q=80');
            background-size: cover;
            background-position: center;
            padding: 120px 0 100px;
            color: white;
            position: relative;
        }
        
        .hero-content h1 {
            font-size: 3.2rem;
            font-weight: 800;
            margin-bottom: 25px;
            line-height: 1.2;
        }
        
        .hero-content p {
            font-size: 1.2rem;
            margin-bottom: 30px;
            opacity: 0.9;
        }
        
        .benefits-list {
            list-style: none;
            padding: 0;
            margin: 30px 0;
        }
        
        .benefits-list li {
            margin-bottom: 15px;
            padding-left: 40px;
            position: relative;
            font-size: 18px;
        }
        
        .benefits-list li:before {
            content: "✓";
            color: var(--primary);
            position: absolute;
            left: 0;
            font-weight: bold;
            font-size: 24px;
        }
        
        .search-form {
            background-color: rgba(255, 255, 255, 0.95);
            padding: 35px;
            border-radius: 12px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
            margin-bottom: 30px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        
        .form-title {
            color: var(--secondary);
            margin-bottom: 25px;
            font-weight: 700;
            text-align: center;
            font-size: 1.6rem;
            position: relative;
            padding-bottom: 15px;
        }
        
        .form-title:after {
            content: '';
            position: absolute;
            width: 60px;
            height: 3px;
            background-color: var(--primary);
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
        }
        
        .form-control, .form-select {
            border: 2px solid var(--light-gray);
            padding: 14px;
            margin-bottom: 18px;
            transition: all 0.3s;
            border-radius: 6px;
            font-size: 16px;
        }
        
        .form-control:focus, .form-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 0.25rem rgba(230, 57, 70, 0.15);
        }
        
        .submit-btn {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: white;
            padding: 15px;
            width: 100%;
            border: none;
            border-radius: 6px;
            font-weight: 700;
            transition: all 0.3s;
            font-size: 1.1rem;
            letter-spacing: 0.5px;
            box-shadow: 0 4px 15px rgba(230, 57, 70, 0.3);
        }
        
        .submit-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(230, 57, 70, 0.4);
        }
        
        .promo-banner {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: white;
            padding: 25px;
            border-radius: 10px;
            text-align: center;
            margin-top: 40px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
            position: relative;
            overflow: hidden;
        }
        
        .promo-banner:before {
            content: '';
            position: absolute;
            width: 150px;
            height: 150px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            top: -75px;
            right: -75px;
        }
        
        .promo-banner:after {
            content: '';
            position: absolute;
            width: 100px;
            height: 100px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            bottom: -50px;
            left: -50px;
        }
        
        .promo-banner h4 {
            color: white;
            margin-bottom: 15px;
            font-weight: 700;
            position: relative;
            z-index: 1;
        }
        
        .promo-banner .phone {
            font-size: 28px;
            font-weight: bold;
            color: white;
            text-decoration: none;
            display: block;
            margin: 10px 0;
            position: relative;
            z-index: 1;
        }
        
        /* Welcome Section */
        .welcome-section {
            background-color: white;
            padding: 100px 0;
            position: relative;
        }
        
        .section-subtitle {
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 1.5px;
            color: var(--primary);
            text-transform: uppercase;
            margin-bottom: 10px;
        }
        
        .section-title {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 25px;
            position: relative;
            display: inline-block;
        }
        
        .section-title:after {
            content: '';
            position: absolute;
            width: 80px;
            height: 4px;
            background-color: var(--primary);
            bottom: -10px;
            left: 0;
        }
        
        .welcome-text {
            font-size: 1.1rem;
            line-height: 1.8;
            color: var(--gray);
            margin-bottom: 1.5rem;
        }
        
        .btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border: none;
            padding: 14px 35px;
            font-weight: 600;
            transition: all 0.3s;
            border-radius: 6px;
            font-size: 1rem;
            box-shadow: 0 4px 15px rgba(230, 57, 70, 0.3);
        }
        
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(230, 57, 70, 0.4);
        }
        
        .welcome-image {
            position: relative;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
            transition: all 0.5s;
        }
        
        .welcome-image img {
            transition: transform 0.5s;
            width: 100%;
        }
        
        .welcome-image:hover img {
            transform: scale(1.05);
        }
        
        .welcome-image:before {
            content: '';
            position: absolute;
            width: 100%;
            height: 100%;
            border: 3px solid var(--primary);
            border-radius: 12px;
            top: 15px;
            left: 15px;
            z-index: -1;
        }
        
        /* Parts Category Section */
        .parts-category {
            background: linear-gradient(135deg, var(--secondary) 0%, #2a4a7c 100%);
            padding: 100px 0;
            color: white;
        }
        
        .parts-category .section-title {
            color: white;
        }
        
        .parts-category .section-title:after {
            background-color: var(--primary);
            left: 50%;
            transform: translateX(-50%);
        }
        
        .parts-category .section-subtitle {
            color: rgba(255, 255, 255, 0.8);
        }
        
        .category-item {
            background-color: rgba(255, 255, 255, 0.1);
            transition: all 0.3s ease;
            cursor: pointer;
            height: 100%;
            border-radius: 10px;
            overflow: hidden;
            text-align: center;
            padding: 30px 15px;
            margin-bottom: 30px;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .category-item:hover {
            transform: translateY(-10px);
            background-color: rgba(255, 255, 255, 0.15);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
        }
        
        .category-image {
            height: 70px;
            object-fit: contain;
            transition: all 0.3s ease;
            margin-bottom: 20px;
            filter: brightness(0) invert(1);
        }
        
        .category-item:hover .category-image {
            transform: scale(1.1);
        }
        
        .category-name {
            font-weight: 600;
            color: white;
            margin-bottom: 0;
            font-size: 1rem;
        }
        
        /* Why Choose Us Section */
        .why-choose-us {
            background-color: white;
            padding: 100px 0;
        }
        
        .feature-card {
            background: white;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            border-top: 4px solid var(--primary);
            padding: 35px 25px;
            height: 100%;
            margin-bottom: 30px;
            text-align: center;
        }
        
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
        }
        
        .feature-icon {
            color: var(--primary);
            margin-bottom: 20px;
            font-size: 2.5rem;
        }
        
        .feature-title {
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 15px;
            font-size: 1.3rem;
        }
        
        .feature-text {
            color: var(--gray);
            line-height: 1.6;
        }
        
        /* Testimonials Section */
        .testimonials {
            background: linear-gradient(135deg, var(--light) 0%, #e2e8f0 100%);
            padding: 100px 0;
        }
        
        .testimonial-card {
            background: white;
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            margin-bottom: 30px;
            position: relative;
        }
        
        .testimonial-card:before {
            content: '"';
            position: absolute;
            font-size: 80px;
            color: var(--primary);
            opacity: 0.2;
            top: 10px;
            left: 20px;
            font-family: serif;
        }
        
        .testimonial-text {
            font-style: italic;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }
        
        .testimonial-author {
            font-weight: 600;
            color: var(--secondary);
        }
        
        .testimonial-role {
            color: var(--gray);
            font-size: 0.9rem;
        }
        
        /* Footer */
        .footer {
            background-color: var(--secondary);
            color: white;
            padding: 70px 0 0;
        }
        
        .footer h5 {
            color: white;
            margin-bottom: 25px;
            font-weight: 700;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer h5:after {
            content: '';
            position: absolute;
            width: 40px;
            height: 3px;
            background-color: var(--primary);
            bottom: 0;
            left: 0;
        }
        
        .footer ul {
            list-style: none;
            padding: 0;
        }
        
        .footer ul li {
            margin-bottom: 12px;
        }
        
        .footer ul li a {
            color: #bbb;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .footer ul li a:hover {
            color: var(--primary);
        }
        
        .footer-contact li {
            display: flex;
            align-items: flex-start;
            margin-bottom: 15px;
        }
        
        .footer-contact li i {
            margin-right: 10px;
            color: var(--primary);
            margin-top: 5px;
        }
        
        .footer-bottom {
            background-color: #152642;
            padding: 25px 0;
            margin-top: 50px;
        }
        
        .social-icons a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background-color: rgba(255, 255, 255, 0.1);
            color: white;
            border-radius: 50%;
            margin-right: 10px;
            transition: all 0.3s;
        }
        
        .social-icons a:hover {
            background-color: var(--primary);
            transform: translateY(-3px);
        }

        /* Modal Styles */
        .modal-content {
            border-radius: 12px;
            border: none;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
        }
        
        .modal-header {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: white;
            border-bottom: none;
            border-radius: 12px 12px 0 0;
        }
        
        .modal-title {
            font-weight: 700;
        }
        
        .btn-close {
            filter: invert(1);
        }
        
        /* Alert Styles */
        .alert {
            border-radius: 8px;
            border: none;
        }
        
        /* Responsive adjustments */
        @media (max-width: 992px) {
            .hero-content h1 {
                font-size: 2.5rem;
            }
            
            .section-title {
                font-size: 2rem;
            }
        }
        
        @media (max-width: 768px) {
            .top-header {
                display: none;
            }
            
            .hero-section {
                padding: 80px 0 60px;
            }
            
            .hero-content h1 {
                font-size: 2.2rem;
            }
            
            .benefits-list li {
                font-size: 16px;
                padding-left: 30px;
            }
            
            .benefits-list li:before {
                font-size: 20px;
            }
            
            .promo-banner .phone {
                font-size: 22px;
            }
            
            .header-phone {
                display: none;
            }
            
            .welcome-section, .parts-category, .why-choose-us, .testimonials {
                padding: 60px 0;
            }
            
            .section-title {
                font-size: 1.8rem;
            }
            
            .welcome-image:before {
                display: none;
            }
        }
        
        @media (max-width: 576px) {
            .search-form {
                padding: 25px;
            }
            
            .hero-content h1 {
                font-size: 1.8rem;
            }
            
            .promo-banner {
                padding: 20px;
            }
            
            .promo-banner .phone {
                font-size: 20px;
            }
            
            .section-title {
                font-size: 1.6rem;
            }
            
            .category-item {
                padding: 20px 10px;
            }
            
            .category-image {
                height: 60px;
            }
            
            .feature-card {
                padding: 25px 15px;
            }
        }