/* CSS Variables - Design System */
:root {
    /* Colors (HSL format) */
    --background: hsl(0, 0%, 100%);
    --foreground: hsl(217, 32%, 17%);
    --card: hsl(0, 0%, 100%);
    --card-foreground: hsl(217, 32%, 17%);
    --popover: hsl(0, 0%, 100%);
    --popover-foreground: hsl(217, 32%, 17%);
    
    /* Automotive Professional Blue */
    --primary: hsl(217, 91%, 60%);
    --primary-foreground: hsl(0, 0%, 100%);
    
    /* Eco-friendly Green */
    --secondary: hsl(158, 64%, 52%);
    --secondary-foreground: hsl(0, 0%, 100%);
    
    --muted: hsl(210, 40%, 96%);
    --muted-foreground: hsl(215, 16%, 47%);
    
    /* Trust Blue Accent */
    --accent: hsl(217, 91%, 60%);
    --accent-foreground: hsl(0, 0%, 100%);
    
    --destructive: hsl(0, 84%, 60%);
    --destructive-foreground: hsl(0, 0%, 98%);
    
    --border: hsl(214, 32%, 91%);
    --input: hsl(214, 32%, 91%);
    --ring: hsl(217, 91%, 60%);
    
    /* Custom Automotive Design Tokens */
    --automotive-blue: hsl(217, 91%, 60%);
    --automotive-green: hsl(158, 64%, 52%);
    --automotive-orange: hsl(25, 95%, 53%);
    --automotive-gray: hsl(215, 16%, 47%);
    --automotive-light-gray: hsl(210, 40%, 96%);
    
    /* CTA Orange for important actions */
    --cta: hsl(25, 95%, 53%);
    --cta-foreground: hsl(0, 0%, 100%);
    
    --radius: 0.5rem;
    
    /* Shadows */
    --shadow-card: 0 4px 20px -4px hsla(217, 32%, 17%, 0.1);
    --shadow-automotive: 0 10px 40px -10px hsla(217, 91%, 60%, 0.2);
    
    /* Typography */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-6xl: 3.75rem;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-32: 8rem;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --background: hsl(217, 32%, 8%);
        --foreground: hsl(0, 0%, 98%);
        --card: hsl(217, 32%, 10%);
        --card-foreground: hsl(0, 0%, 98%);
        --popover: hsl(217, 32%, 10%);
        --popover-foreground: hsl(0, 0%, 98%);
        --primary: hsl(217, 91%, 65%);
        --primary-foreground: hsl(0, 0%, 100%);
        --secondary: hsl(158, 64%, 52%);
        --secondary-foreground: hsl(0, 0%, 100%);
        --muted: hsl(217, 32%, 15%);
        --muted-foreground: hsl(215, 20%, 65%);
        --accent: hsl(217, 91%, 65%);
        --accent-foreground: hsl(0, 0%, 100%);
        --destructive: hsl(0, 63%, 31%);
        --destructive-foreground: hsl(0, 0%, 98%);
        --border: hsl(217, 32%, 18%);
        --input: hsl(217, 32%, 18%);
        --ring: hsl(217, 91%, 65%);
        --automotive-blue: hsl(217, 91%, 65%);
        --automotive-green: hsl(158, 64%, 52%);
        --automotive-orange: hsl(25, 95%, 58%);
        --automotive-gray: hsl(215, 20%, 65%);
        --automotive-light-gray: hsl(217, 32%, 15%);
        --cta: hsl(25, 95%, 58%);
        --cta-foreground: hsl(0, 0%, 100%);
        --shadow-card: 0 4px 20px -4px hsla(0, 0%, 0%, 0.3);
        --shadow-automotive: 0 10px 40px -10px hsla(217, 91%, 65%, 0.3);
    }
}

/* Reset and Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--foreground);
    background-color: var(--background);
    font-size: var(--font-size-base);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) 0;
}

.logo {
    height: 3rem;
    width: auto;
    object-fit: contain;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-8);
}

.nav-link {
    color: hsl(217, 32%, 17%);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--primary);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    cursor: pointer;
    color: var(--foreground);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    white-space: nowrap;
}

.btn-lg {
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-base);
}

.btn-full {
    width: 100%;
}

.btn-cta {
    background: linear-gradient(135deg, var(--cta), var(--cta));
    color: var(--cta-foreground);
    box-shadow: var(--shadow-card);
}

.btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-automotive);
}

.btn-outline {
    border: 1px solid var(--primary);
    color: var(--primary);
    background: transparent;
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--primary-foreground);
}

.btn .icon {
    margin-right: var(--spacing-2);
}

/* Hero Section */
.hero {
    padding: var(--spacing-20) 0 var(--spacing-32) 0;
    margin-top: 80px;
    background: linear-gradient(135deg, 
        hsla(217, 91%, 60%, 0.05), 
        hsla(158, 64%, 52%, 0.05), 
        var(--background));
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-12);
    align-items: center;
}

.hero-text {
    max-width: 100%;
}

.badge {
    display: inline-block;
    padding: var(--spacing-1) var(--spacing-3);
    background: var(--secondary);
    color: var(--secondary-foreground);
    border-radius: var(--radius);
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-4);
}

.badge-secondary {
    background: var(--secondary);
    color: var(--secondary-foreground);
}

.badge-outline {
    border: 1px solid var(--border);
    background: transparent;
    color: var(--foreground);
}

.hero-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-6);
    color: var(--foreground);
}

.text-primary {
    color: var(--primary);
}

.hero-description {
    font-size: var(--font-size-xl);
    color: var(--muted-foreground);
    margin-bottom: var(--spacing-8);
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-8);
}

.hero-features {
    display: flex;
    gap: var(--spacing-6);
    font-size: var(--font-size-sm);
    color: var(--muted-foreground);
}

.feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.feature-icon {
    color: var(--secondary);
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius);
    box-shadow: var(--shadow-automotive);
}

.rounded-shadow {
    border-radius: var(--radius);
    box-shadow: var(--shadow-automotive);
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-16);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-6);
    color: var(--foreground);
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--muted-foreground);
    max-width: 2xl;
    margin: 0 auto;
    line-height: 1.6;
}

.section-content {
    max-width: 4xl;
    margin: 0 auto;
    text-align: center;
}

/* About Section */
.about-section {
    padding: var(--spacing-20) 0;
    background: var(--muted);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-8);
    margin-top: var(--spacing-12);
}

.feature-card {
    text-align: center;
}

.feature-icon-circle {
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-4) auto;
    font-size: var(--font-size-2xl);
    color: white;
}

.bg-primary {
    background: var(--primary);
}

.bg-secondary {
    background: var(--secondary);
}

.bg-cta {
    background: var(--cta);
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-2);
}

.feature-desc {
    color: var(--muted-foreground);
}

/* Why Choose Us Section */
.why-choose-section {
    padding: var(--spacing-20) 0;
    background: linear-gradient(135deg, 
        hsla(217, 91%, 60%, 0.05), 
        hsla(158, 64%, 52%, 0.05));
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-16);
}

.stat-card {
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-2);
}

.stat-label {
    color: var(--muted-foreground);
}

.safety-section {
    margin-bottom: var(--spacing-16);
}

.safety-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-12);
    color: var(--foreground);
}

.safety-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-6);
}

/* Cards */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
    transition: box-shadow 0.3s ease;
}

.card:hover {
    box-shadow: var(--shadow-automotive);
}

.card-content {
    padding: var(--spacing-6);
    text-align: center;
}

.card-icon {
    width: 3rem;
    height: 3rem;
    background: hsla(217, 91%, 60%, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-4) auto;
    font-size: var(--font-size-xl);
    color: var(--primary);
}

.card-title {
    font-weight: 600;
    margin-bottom: var(--spacing-2);
}

.card-desc {
    font-size: var(--font-size-sm);
    color: var(--muted-foreground);
}

.trust-card {
    background: var(--card);
    border-radius: var(--radius);
    padding: var(--spacing-8);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-card);
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-8);
    text-align: center;
}

.trust-icon {
    font-size: var(--font-size-3xl);
    margin: 0 auto var(--spacing-4) auto;
    color: var(--secondary);
}

.trust-title {
    font-weight: 600;
    margin-bottom: var(--spacing-2);
}

.trust-desc {
    color: var(--muted-foreground);
}

/* Services Section */
.services-section {
    padding: var(--spacing-20) 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-6);
}

.service-card {
    padding: var(--spacing-6);
}

.service-header {
    text-align: center;
    margin-bottom: var(--spacing-4);
}

.service-icon {
    width: 4rem;
    height: 4rem;
    background: hsla(217, 91%, 60%, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-4) auto;
    font-size: var(--font-size-2xl);
    color: var(--primary);
}

.service-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.service-content {
    text-align: center;
}

.service-description {
    color: var(--muted-foreground);
    margin-bottom: var(--spacing-4);
}

.service-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    justify-content: center;
}

/* Testimonials Section */
.testimonials-section {
    padding: var(--spacing-20) 0;
    background: var(--muted);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-8);
}

.testimonial-card {
    padding: var(--spacing-6);
}

.testimonial-content {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.testimonial-rating {
    display: flex;
    margin-bottom: var(--spacing-4);
}

.star {
    color: var(--secondary);
    margin-right: var(--spacing-1);
}

.testimonial-text {
    color: var(--muted-foreground);
    font-style: italic;
    margin-bottom: var(--spacing-4);
    flex-grow: 1;
}

.testimonial-author {
    border-top: 1px solid var(--border);
    padding-top: var(--spacing-4);
}

.author-name {
    font-weight: 600;
}

.author-location {
    font-size: var(--font-size-sm);
    color: var(--muted-foreground);
    margin-bottom: var(--spacing-2);
}

/* Blog Section */
.blog-section {
    padding: var(--spacing-20) 0;
    background: var(--muted);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-8);
}

.blog-card {
    padding: var(--spacing-6);
    cursor: pointer;
    transition: transform 0.3s ease;
}

.blog-card:hover {
    transform: translateY(-4px);
}

.blog-header {
    margin-bottom: var(--spacing-4);
}

.blog-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-2);
    transition: color 0.3s ease;
}

.blog-card:hover .blog-title {
    color: var(--primary);
}

.blog-excerpt {
    color: var(--muted-foreground);
}

.blog-cta {
    text-align: center;
    margin-top: var(--spacing-12);
}

/* Certifications Section */
.certifications-section {
    padding: var(--spacing-20) 0;
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-8);
}

.certification-card {
    padding: var(--spacing-6);
}

.cert-content {
    text-align: center;
}

.cert-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-4);
}

.cert-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-2);
}

.cert-desc {
    color: var(--muted-foreground);
}

/* Contact Section */
.contact-section {
    padding: var(--spacing-20) 0;
}

.contact-content {
    max-width: 4xl;
    margin: 0 auto;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-12);
    margin-top: var(--spacing-16);
}

.contact-info-title {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    margin-bottom: var(--spacing-6);
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-4);
}

.contact-icon {
    font-size: var(--font-size-xl);
    color: var(--primary);
    margin-top: var(--spacing-1);
}

.contact-label {
    font-weight: 600;
    margin-bottom: var(--spacing-1);
}

.contact-desc {
    color: var(--muted-foreground);
    margin-bottom: var(--spacing-1);
}

.contact-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.contact-link:hover {
    text-decoration: underline;
}

.contact-cta {
    background: linear-gradient(135deg, 
        hsla(217, 91%, 60%, 0.05), 
        hsla(158, 64%, 52%, 0.05));
    padding: var(--spacing-8);
    border-radius: var(--radius);
}

.cta-title {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    margin-bottom: var(--spacing-6);
}

.cta-desc {
    color: var(--muted-foreground);
    margin-bottom: var(--spacing-6);
}

.cta-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

/* Footer */
.footer {
    background: var(--primary);
    color: var(--primary-foreground);
    padding: var(--spacing-12) 0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-8);
}

.footer-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-4);
}

.footer-desc {
    opacity: 0.8;
    margin-bottom: var(--spacing-4);
}

.footer-info p {
    opacity: 0.8;
}

.footer-heading {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-4);
}

.footer-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.footer-list li {
    opacity: 0.8;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    margin-top: var(--spacing-8);
    padding-top: var(--spacing-8);
    text-align: center;
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-8);
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-features {
        flex-direction: column;
        gap: var(--spacing-4);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-8);
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .services-grid,
    .testimonials-grid,
    .blog-grid,
    .certifications-grid {
        grid-template-columns: 1fr;
    }
    
    .trust-grid {
        grid-template-columns: 1fr;
    }
    
    .safety-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-2);
    }
    
    .hero {
        padding: var(--spacing-16) 0 var(--spacing-20) 0;
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .safety-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-4 { margin-top: var(--spacing-4); }
.mb-4 { margin-bottom: var(--spacing-4); }
.ml-4 { margin-left: var(--spacing-4); }
.mr-4 { margin-right: var(--spacing-4); }

.p-4 { padding: var(--spacing-4); }
.pt-4 { padding-top: var(--spacing-4); }
.pb-4 { padding-bottom: var(--spacing-4); }
.pl-4 { padding-left: var(--spacing-4); }
.pr-4 { padding-right: var(--spacing-4); }

/* Animation utilities */
.fade-in {
    animation: fadeIn 0.6s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-up {
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}