@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;700;900&display=swap');

        :root {
            --bmw-blue: #1c69d4;
            --bmw-dark-blue: #0d4a9c;
            --bg-dark: #0a0a0a;
            --card-dark: #1a1a1a;
            --text-light: #f0f0f0;
            --text-medium: #a0a0a0;
            --text-dark: #111;
            --border-light: #333;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Roboto', sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-light);
            overflow-x: hidden;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        section {
            padding: 6rem 0;
            text-align: center;
        }
        
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s ease-out, transform 0.8s ease-out;
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* Header */
        header {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            padding: 1.5rem 0;
        }

        .main-nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            text-decoration: none;
            color: var(--text-light);
            font-weight: 700;
            font-size: 1.5rem;
        }

        .logo svg {
            width: 40px;
            height: 40px;
        }

        .nav-links {
            display: flex;
            gap: 2.5rem;
        }

        .nav-links a {
            color: var(--text-light);
            text-decoration: none;
            font-weight: 400;
            position: relative;
            transition: color 0.3s;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--bmw-blue);
            transition: width 0.3s ease;
        }

        .nav-links a:hover {
            color: var(--bmw-blue);
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .btn {
            padding: 0.75rem 1.5rem;
            text-decoration: none;
            border-radius: 5px;
            font-weight: 700;
            transition: all 0.3s ease;
            cursor: pointer;
            border: 2px solid transparent;
        }

        .btn-primary {
            background-color: var(--bmw-blue);
            color: var(--text-light);
        }

        .btn-primary:hover {
            background-color: var(--bmw-dark-blue);
        }

        .btn-secondary {
            background-color: rgba(30, 30, 30, 0.7);
            color: var(--text-light);
            border: 2px solid var(--border-light);
        }

        .btn-secondary:hover {
            background-color: rgba(50, 50, 50, 0.9);
            border-color: var(--text-medium);
        }

        /* Hero Section */
        .hero {
            height: 100vh;
            min-height: 700px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
            color: var(--text-light);
            position: relative;
            background: url('https://images.unsplash.com/photo-1552519507-da3b142c6e3d?q=80&w=2070&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1pYWdlfHx8fGVufDB8fHx8fA%3D%3D') no-repeat center center/cover;
            padding: 0 1rem;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(0deg, rgba(10, 10, 10, 1) 5%, rgba(10, 10, 10, 0.6) 40%, rgba(10, 10, 10, 0.6) 60%, rgba(10, 10, 10, 0.9) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .hero-title {
            font-size: 6rem;
            font-weight: 900;
            line-height: 1.1;
            margin-bottom: 1.5rem;
            text-transform: uppercase;
        }

        .hero-title .blue-text {
            color: var(--bmw-blue);
        }

        .hero-subtitle {
            font-size: 1.25rem;
            font-weight: 300;
            max-width: 600px;
            margin-bottom: 2.5rem;
            color: var(--text-medium);
        }

        .hero-actions {
            display: flex;
            gap: 1rem;
        }
        
        .scroll-indicator {
            position: absolute;
            bottom: 30px;
            left: 30px;
            z-index: 2;
            opacity: 0.7;
            animation: bounce 2s infinite;
        }
        
        .scroll-indicator svg {
            width: 24px;
            height: 40px;
        }

        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% {
                transform: translateY(0);
            }
            40% {
                transform: translateY(-10px);
            }
            60% {
                transform: translateY(-5px);
            }
        }

        /* Section Titles */
        .section-title {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }

        .section-title .blue-text {
            color: var(--bmw-blue);
        }

        .section-subtitle {
            font-size: 1.1rem;
            font-weight: 300;
            color: var(--text-medium);
            max-width: 700px;
            margin: 0 auto 4rem;
        }

        /* Premium Collection Section */
        .collection-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-bottom: 3rem;
        }

        .car-card {
            background: var(--card-dark);
            border-radius: 10px;
            overflow: hidden;
            text-align: left;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .car-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        }

        .car-card-image {
            width: 100%;
            height: 220px;
            object-fit: cover;
            position: relative;
        }
        
        .car-card-image-container {
            position: relative;
        }
        
        .car-card-category {
            position: absolute;
            top: 1rem;
            right: 1rem;
            background-color: var(--bmw-blue);
            color: var(--text-light);
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
        }

        .car-card-content {
            padding: 1.5rem;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .car-card h3 {
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .car-card p {
            font-size: 1rem;
            color: var(--text-medium);
            line-height: 1.6;
            margin-bottom: 1.5rem;
            flex-grow: 1;
        }

        .car-features {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-bottom: 1.5rem;
        }

        .feature-tag {
            background-color: #2c2c2c;
            color: var(--text-medium);
            padding: 0.4rem 0.8rem;
            border-radius: 5px;
            font-size: 0.8rem;
        }

        .car-card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid var(--border-light);
            padding-top: 1.5rem;
            margin-top: auto;
        }
        
        .car-price {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--bmw-blue);
        }
        
        .car-card .btn-learn-more {
             padding: 0.6rem 1.2rem;
             background: transparent;
             border: 1px solid var(--text-medium);
             color: var(--text-light);
             border-radius: 5px;
             text-decoration: none;
             transition: all 0.3s ease;
        }
        
        .car-card .btn-learn-more:hover {
            background-color: var(--bmw-blue);
            border-color: var(--bmw-blue);
        }

        /* Innovative Technology Section */
        #innovation {
            background-color: #000;
        }
        .tech-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 2rem;
        }

        .tech-card {
            background-color: var(--card-dark);
            padding: 2.5rem;
            border-radius: 10px;
            border: 1px solid var(--border-light);
            transition: all 0.3s ease;
        }
        
        .tech-card:hover {
            border-color: var(--bmw-blue);
            transform: translateY(-5px);
        }
        
        .tech-icon {
            margin-bottom: 1.5rem;
        }
        
        .tech-icon svg {
            width: 50px;
            height: 50px;
            fill: var(--bmw-blue);
        }
        
        .tech-card h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }
        
        .tech-card p {
            color: var(--text-medium);
            line-height: 1.6;
            margin-bottom: 1.5rem;
            max-width: 400px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .tech-tag {
            display: inline-block;
            background-color: #2c2c2c;
            border: 1px solid var(--border-light);
            color: var(--text-light);
            padding: 0.5rem 1.5rem;
            border-radius: 20px;
            font-weight: 700;
            transition: all 0.3s ease;
        }
        
        .tech-tag:hover {
            background-color: var(--bmw-blue);
            border-color: var(--bmw-blue);
        }
        
        /* Experience Section */
        #experience {
            padding: 8rem 0;
        }

        .experience-content .logo {
            justify-content: center;
            margin-bottom: 2rem;
        }
        
        .experience-content .logo svg {
            width: 80px;
            height: 80px;
        }

        /* Footer */
        footer {
            background-color: #000;
            padding: 5rem 0 2rem;
            font-size: 0.9rem;
        }

        .footer-content {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 3rem;
            padding-bottom: 3rem;
            border-bottom: 1px solid var(--border-light);
        }
        
        .footer-about .logo {
            margin-bottom: 1rem;
        }
        
        .footer-about p {
            color: var(--text-medium);
            line-height: 1.7;
            max-width: 300px;
            margin-bottom: 1.5rem;
        }
        
        .social-links {
            display: flex;
            gap: 1rem;
        }

        .social-links a {
            display: flex;
            justify-content: center;
            align-items: center;
            width: 40px;
            height: 40px;
            background: var(--card-dark);
            border-radius: 50%;
            transition: background-color 0.3s;
        }
        
        .social-links a:hover {
            background-color: var(--bmw-blue);
        }
        
        .social-links svg {
            width: 20px;
            height: 20px;
            fill: var(--text-medium);
            transition: fill 0.3s;
        }
        
        .social-links a:hover svg {
            fill: var(--text-light);
        }
        
        .footer-links h4 {
            font-size: 1.1rem;
            margin-bottom: 1.5rem;
        }
        
        .footer-links ul {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 0.75rem;
        }
        
        .footer-links a {
            color: var(--text-medium);
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .footer-links a:hover {
            color: var(--bmw-blue);
        }
        
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 2rem;
            color: var(--text-medium);
        }
        
        .footer-legal a {
            color: var(--text-medium);
            text-decoration: none;
            margin-left: 1.5rem;
            transition: color 0.3s;
        }
        
        .footer-legal a:hover {
            color: var(--bmw-blue);
        }
        
        /* Hamburger Menu for Mobile */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
        }

        .hamburger .bar {
            width: 25px;
            height: 3px;
            background-color: var(--text-light);
            border-radius: 5px;
            transition: all 0.3s ease;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-links, .nav-actions .btn-secondary {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            
            .hero-title {
                font-size: 4rem;
            }
            
            .collection-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .tech-grid {
                grid-template-columns: 1fr;
            }
            
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        
        @media (max-width: 768px) {
            .container {
                padding: 0 1rem;
            }
            .hero-title {
                font-size: 3rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 80%;
            }
            .hero-actions .btn {
                width: 100%;
            }

            .section-title {
                font-size: 2.5rem;
            }

            .collection-grid {
                grid-template-columns: 1fr;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
                text-align: center;
            }
            
            .footer-about .logo, .social-links, .footer-links h4 {
                justify-content: center;
                text-align: center;
                margin-left: auto;
                margin-right: auto;
            }
            
            .footer-bottom {
                flex-direction: column;
                gap: 1rem;
            }
        }