/* CSS Variables for Consistent Design System */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --text-color: #333;
    --light-text: #666;
    --background-color: #fff;
    --light-bg: #f8f9fa;
    --border-color: #e9ecef;
    --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.15);
    --shadow-heavy: 0 10px 40px rgba(0, 0, 0, 0.2);
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
    --border-radius: 8px;
    --max-width: 1200px;
    --font-primary: 'Arial', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

/* Font Optimization for Web Vitals */
@font-face {
    font-family: 'Arial';
    font-display: swap;
    font-style: normal;
    font-weight: 400;
}

/* Critical CSS - Above the Fold Optimization */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Performance-optimized body styles */
body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    font-display: swap;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
    overflow-x: hidden;
}

/* Container with optimal max-width for readability */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
    contain: layout style paint;
}

/* Image Optimization for Core Web Vitals */
img {
    loading: lazy;
    decoding: async;
    max-width: 100%;
    height: auto;
}

/* Typography Optimization for SEO and Readability */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: 1rem;
    line-height: 1.2;
    font-weight: 700;
    color: var(--primary-color);
}

h1 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.2rem);
    margin-bottom: 2rem;
    text-align: center;
    font-weight: 700;
}

h3 {
    font-size: clamp(1.3rem, 2.5vw, 1.5rem);
    font-weight: 600;
}

p {
    margin-bottom: 1rem;
    color: var(--light-text);
    line-height: 1.7;
    font-size: 1.1rem;
}

/* High-Performance Button System */
.btn, .cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 700;
    text-align: center;
    transition: all var(--transition-medium);
    border: none;
    cursor: pointer;
    font-size: 1rem;
    min-height: 44px; /* Accessibility - touch target size */
    white-space: nowrap;
    position: relative;
    overflow: hidden;
    transform: translateZ(0); /* Hardware acceleration */
    will-change: transform, box-shadow;
}

.btn.primary, .cta-button {
    background: linear-gradient(135deg, var(--accent-color), #c0392b);
    color: white;
    box-shadow: var(--shadow-light);
}

.btn.primary:hover, .cta-button:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: var(--shadow-medium);
    background: linear-gradient(135deg, #c0392b, var(--accent-color));
}

.btn.secondary, .cta-button.secondary {
    background: linear-gradient(135deg, var(--secondary-color), #2980b9);
    color: white;
    box-shadow: var(--shadow-light);
}

.btn.secondary:hover, .cta-button.secondary:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: var(--shadow-medium);
    background: linear-gradient(135deg, #2980b9, var(--secondary-color));
}

.btn.large {
    padding: 16px 32px;
    font-size: 1.2rem;
    min-height: 56px;
}

/* Header - Optimized for Core Web Vitals */
.header {
    background: linear-gradient(135deg, var(--light-bg), #ffffff);
    padding: 1rem 0;
    border-bottom: 3px solid var(--accent-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-light);
    contain: layout style paint;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo h1 {
    margin-bottom: 0.5rem;
    font-size: clamp(1.5rem, 3vw, 2rem);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    color: var(--accent-color);
    font-weight: 700;
    font-size: clamp(0.8rem, 1.5vw, 0.9rem);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0;
}

.header-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Navigation - Optimized for Accessibility and SEO */
.main-nav {
    background: linear-gradient(135deg, var(--primary-color), #34495e);
    padding: 1rem 0;
    position: sticky;
    top: 72px;
    z-index: 999;
    contain: layout style paint;
}

.nav-menu {
    display: flex;
    list-style: none;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin: 0;
    padding: 0;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: all var(--transition-medium);
    position: relative;
    min-height: 44px;
    display: flex;
    align-items: center;
    font-size: 1rem;
}

.nav-menu a:hover, .nav-menu a:focus {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-light);
}

.nav-menu a:focus {
    outline: 2px solid white;
    outline-offset: 2px;
}

/* Hero Section - Optimized for Conversion */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 4rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 500px;
    display: flex;
    align-items: center;
}

.hero::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"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></svg>') repeat;
    background-size: 50px 50px;
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    margin: 0 auto;
}

.hero-content h2 {
    color: white;
    font-size: clamp(2rem, 5vw, 2.5rem);
    margin-bottom: 1.5rem;
    font-weight: 800;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    line-height: 1.1;
}

.hero-description {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    max-width: 800px;
    margin: 0 auto 2rem;
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.6;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.2);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

/* Stats Section - Eye-catching Performance Metrics */
.stats {
    background: linear-gradient(135deg, var(--light-bg), #ffffff);
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.stats .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item {
    padding: 2rem;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    transition: transform var(--transition-medium);
    contain: layout style paint;
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.stat-item h3 {
    font-size: clamp(2.5rem, 5vw, 3rem);
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-color), #c0392b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    counter-reset: none;
}

.stat-item p {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.1rem;
    letter-spacing: 0.5px;
    margin-bottom: 0;
}

/* Services Section - SEO Optimized Grid */
.services {
    padding: 4rem 0;
    background: white;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.service-card {
    background: linear-gradient(135deg, var(--light-bg), #ffffff);
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    transition: all var(--transition-medium);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
    contain: layout style paint;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
    transform: scaleX(0);
    transition: transform var(--transition-medium);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-heavy);
    border-color: var(--secondary-color);
}

.service-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.4rem;
    font-weight: 700;
}

.service-card p {
    line-height: 1.7;
    color: var(--text-color);
}

/* Process Section - Visual Step-by-Step Guide */
.process {
    background: linear-gradient(135deg, var(--light-bg), #f1f2f6);
    padding: 4rem 0;
    position: relative;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.step {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    position: relative;
    border: 1px solid var(--border-color);
    transition: all var(--transition-medium);
    contain: layout style paint;
}

.step:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.step-number {
    background: linear-gradient(135deg, var(--accent-color), #c0392b);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.4rem;
    margin: 0 auto 1.5rem;
    box-shadow: var(--shadow-light);
}

.step h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.step p {
    line-height: 1.7;
    color: var(--text-color);
}

/* About Section - Trust-Building Content */
.about {
    padding: 4rem 0;
    background: white;
}

.about-intro {
    text-align: center;
    font-size: clamp(1.1rem, 2.5vw, 1.3rem);
    max-width: 800px;
    margin: 0 auto 3rem;
    color: var(--text-color);
    font-weight: 500;
    line-height: 1.7;
}

.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
    margin-top: 2rem;
}

.about-text ul, .service-areas ul {
    list-style: none;
    padding-left: 0;
}

.about-text li, .service-areas li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    position: relative;
    padding-left: 2rem;
    transition: background-color var(--transition-fast);
}

.about-text li:hover {
    background-color: var(--light-bg);
    border-radius: 5px;
}

.about-text li:before {
    content: "✓";
    color: var(--success-color);
    font-weight: 800;
    position: absolute;
    left: 0;
    font-size: 1.2rem;
}

.cities {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 0.5rem;
}

.cities li {
    background: linear-gradient(135deg, var(--light-bg), #ffffff);
    padding: 0.75rem;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all var(--transition-medium);
    font-weight: 600;
}

.cities li:hover {
    background: linear-gradient(135deg, var(--secondary-color), #3498db);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-light);
}

/* Testimonials Section - Social Proof Optimization */
.testimonials {
    background: linear-gradient(135deg, var(--light-bg), #f8f9fa);
    padding: 4rem 0;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.testimonial {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    position: relative;
    transition: all var(--transition-medium);
    border-left: 4px solid var(--success-color);
    contain: layout style paint;
}

.testimonial:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: var(--shadow-medium);
}

.testimonial::before {
    content: '"';
    font-size: 4rem;
    color: var(--secondary-color);
    position: absolute;
    top: -10px;
    left: 20px;
    opacity: 0.3;
    font-family: Georgia, serif;
}

.stars {
    color: var(--warning-color);
    font-size: 1.4rem;
    margin-bottom: 1rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
}

.testimonial p {
    font-style: italic;
    margin-bottom: 1rem;
    color: var(--text-color);
    line-height: 1.8;
    font-size: 1.05rem;
}

.testimonial cite {
    font-weight: 700;
    color: var(--primary-color);
    font-style: normal;
    font-size: 0.95rem;
}

/* Contact Section - Conversion Optimized */
.contact {
    padding: 4rem 0;
    background: white;
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
    margin-top: 2rem;
}

.contact-details {
    margin-top: 2rem;
}

.contact-item {
    margin-bottom: 1.5rem;
    padding: 1.5rem;
    background: var(--light-bg);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--secondary-color);
    transition: all var(--transition-medium);
}

.contact-item:hover {
    background: white;
    box-shadow: var(--shadow-light);
    transform: translateX(5px);
}

.contact-item strong {
    color: var(--primary-color);
    display: block;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.contact-item a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 700;
    font-size: 1.2rem;
    transition: color var(--transition-fast);
}

.contact-item a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.cta-section {
    text-align: center;
    background: linear-gradient(135deg, var(--light-bg), #ffffff);
    padding: 3rem;
    border-radius: var(--border-radius);
    border: 2px solid var(--secondary-color);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
}

.cta-section h3 {
    color: var(--primary-color);
    font-size: clamp(1.5rem, 3vw, 1.8rem);
    margin-bottom: 1rem;
    font-weight: 800;
}

.guarantee {
    margin-top: 1rem;
    color: var(--success-color);
    font-weight: 700;
    font-size: 1.1rem;
    line-height: 1.6;
}

/* Footer - SEO and Accessibility Optimized */
.footer {
    background: linear-gradient(135deg, var(--primary-color), #2c3e50);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: white;
    margin-bottom: 1rem;
    font-size: 1.3rem;
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 0.5rem;
}

.footer-section p, .footer-section li {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section li {
    padding: 0.5rem 0;
    transition: color var(--transition-fast);
}

.footer-section a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-weight: 500;
}

.footer-section a:hover {
    color: white;
    text-decoration: underline;
    transform: translateX(3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

/* Accessibility Improvements */
.skip-to-content {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-color);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    z-index: 10000;
    transition: top var(--transition-fast);
}

.skip-to-content:focus {
    top: 0;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Performance Optimizations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
    will-change: opacity, transform;
}

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

/* Focus states for accessibility */
.btn:focus, .cta-button:focus, .nav-menu a:focus, a:focus {
    outline: 3px solid var(--secondary-color);
    outline-offset: 2px;
}

/* Print Styles for SEO */
@media print {
    .header, .main-nav, .footer {
        display: none;
    }
    
    .hero {
        background: none;
        color: black;
    }
    
    * {
        background: none !important;
        color: black !important;
        box-shadow: none !important;
    }
    
    .contact-item a[href^="tel:"]:after {
        content: " (" attr(href) ")";
    }
}

/* Responsive Design - Mobile First Approach */
@media (max-width: 768px) {
    .nav-wrapper {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .header-cta {
        justify-content: center;
        width: 100%;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 0.5rem;
        align-items: center;
    }
    
    .hero {
        padding: 3rem 0;
        min-height: 400px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .about-content, .contact-content {
        grid-template-columns: 1fr;
    }
    
    .stats .container, .process-steps, .services-grid, .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .main-nav {
        position: static;
    }
    
    .header {
        position: static;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero, .services, .about, .contact, .process {
        padding: 2rem 0;
    }
    
    .cta-section {
        padding: 2rem;
    }
    
    .service-card, .step, .testimonial {
        padding: 1.5rem;
    }
    
    .btn, .cta-button {
        padding: 14px 20px;
        font-size: 0.95rem;
    }
}

/* Advanced Performance Optimizations */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* High DPI Display Optimization */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .hero::before {
        background-size: 25px 25px;
    }
}

/* Loading Performance - Critical Path CSS */
.hero, .header, .main-nav {
    contain: layout style paint;
}

/* Hover effects only for devices that support hover */
@media (hover: hover) {
    .service-card:hover, .step:hover, .testimonial:hover, .stat-item:hover {
        transform: translateY(-5px);
    }
}

/* Dark mode support (future-proofing) */
@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #1a1a1a;
        --text-color: #e0e0e0;
        --light-text: #b0b0b0;
        --light-bg: #2d2d2d;
        --border-color: #404040;
    }
}