/* ================================
   CSS Reset & Base Styles
   ================================ */

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

:root {
    /* Primary Colors - HVAC Industry Theme */
    --primary-blue: #0066cc;
    --primary-blue-dark: #004a99;
    --primary-blue-light: #3385d6;
    --accent-orange: #ff6b35;
    --accent-orange-dark: #e85a28;
    --accent-orange-light: #ff8555;
    
    /* Neutral Colors */
    --white: #ffffff;
    --black: #000000;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Semantic Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Borders */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    width: 100%;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-base);
}

ul {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* ================================
   Typography
   ================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
}

h4 {
    font-size: clamp(1.1rem, 2.5vw, 1.35rem);
}

p {
    margin-bottom: var(--spacing-sm);
}

strong {
    font-weight: 600;
    color: var(--gray-900);
}

.highlight {
    color: var(--primary-blue);
}

/* ================================
   Buttons
   ================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-primary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    text-align: center;
    cursor: pointer;
    white-space: nowrap;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--primary-blue);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: var(--primary-blue-dark);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary-blue);
    border-color: var(--primary-blue);
}

.btn-secondary:hover {
    background: var(--primary-blue);
    color: var(--white);
}

.btn-call {
    background: var(--accent-orange);
    color: var(--white);
    font-weight: 700;
}

.btn-call:hover {
    background: var(--accent-orange-dark);
}

.btn-large {
    padding: 1.125rem 2rem;
    font-size: 1.125rem;
}

.btn-cta {
    background: var(--accent-orange);
    color: var(--white);
    padding: 1.25rem 2.5rem;
    font-size: 1.25rem;
    box-shadow: var(--shadow-xl);
}

.btn-cta:hover {
    background: var(--accent-orange-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-2xl);
}

/* ================================
   Section Styles
   ================================ */

section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-2xl);
}

.section-label {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: var(--primary-blue-light);
    color: var(--white);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
}

.section-title {
    margin-bottom: var(--spacing-md);
}

.section-description {
    font-size: 1.125rem;
    color: var(--gray-600);
    line-height: 1.8;
}

/* ================================
   Header
   ================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--white);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    transition: all var(--transition-base);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
}

.logo i {
    font-size: 2rem;
    color: var(--primary-blue);
    animation: spin 3s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.logo-highlight {
    color: var(--primary-blue);
}

.nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-list {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--gray-700);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-blue);
    background: var(--gray-100);
}

.header-cta {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 0.375rem;
    padding: 0.5rem;
}

.mobile-toggle span {
    width: 1.5rem;
    height: 2px;
    background: var(--gray-800);
    transition: all var(--transition-base);
    border-radius: 2px;
}

/* ================================
   Hero Section
   ================================ */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    background-image: 
        linear-gradient(135deg, rgba(0, 102, 204, 0.95) 0%, rgba(0, 74, 153, 0.95) 100%),
        url('https://images.unsplash.com/photo-1621905251189-08b45d6a269e?w=1920&h=1080&fit=crop');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    padding-top: 80px;
    color: var(--white);
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.1);
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    text-align: center;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.hero-badge i {
    color: var(--accent-orange);
    font-size: 1.125rem;
}

.hero-title {
    color: var(--white);
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero-title .highlight {
    color: var(--accent-orange);
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
    color: rgba(255, 255, 255, 0.95);
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    font-weight: 500;
}

.hero-feature i {
    color: var(--accent-orange);
    font-size: 1.25rem;
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.hero-trust {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-size: 0.9375rem;
}

.trust-item i {
    color: var(--accent-orange);
    font-size: 1.5rem;
}

/* ================================
   About Section
   ================================ */

.about {
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.about-content {
    padding-right: var(--spacing-lg);
}

.about-text {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--gray-600);
    margin-bottom: var(--spacing-md);
}

.about-highlights {
    display: grid;
    gap: var(--spacing-md);
    margin: var(--spacing-xl) 0;
}

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

.highlight-item i {
    color: var(--success);
    font-size: 1.5rem;
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.highlight-item h4 {
    margin-bottom: 0.25rem;
    font-size: 1.125rem;
    color: var(--gray-900);
}

.highlight-item p {
    font-size: 0.9375rem;
    color: var(--gray-600);
    margin: 0;
}

.about-image {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about-image img {
    width: 100%;
    height: 600px;
    object-fit: cover;
}

.about-badge {
    position: absolute;
    bottom: 2rem;
    left: 2rem;
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.badge-content {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.badge-content i {
    font-size: 2.5rem;
    color: var(--accent-orange);
}

.badge-content strong {
    display: block;
    font-size: 1.5rem;
    color: var(--gray-900);
}

.badge-content span {
    font-size: 0.9375rem;
    color: var(--gray-600);
}

/* ================================
   Services Section
   ================================ */

.services {
    background: var(--gray-50);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-blue);
}

.featured-service {
    border: 2px solid var(--accent-orange);
    background: linear-gradient(135deg, #fff5f2 0%, #ffffff 100%);
}

.service-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
    color: var(--white);
    font-size: 2rem;
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-md);
}

.featured-service .service-icon {
    background: linear-gradient(135deg, var(--accent-orange) 0%, var(--accent-orange-light) 100%);
}

.service-card h3 {
    font-size: 1.375rem;
    margin-bottom: var(--spacing-md);
    color: var(--gray-900);
}

.service-card p {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--gray-600);
    margin-bottom: var(--spacing-md);
}

.service-features {
    margin: var(--spacing-md) 0;
    display: grid;
    gap: 0.625rem;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    color: var(--gray-700);
}

.service-features i {
    color: var(--success);
    font-size: 0.875rem;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-blue);
    font-weight: 600;
    font-size: 0.9375rem;
    margin-top: var(--spacing-md);
    transition: all var(--transition-base);
}

.service-link:hover {
    gap: 0.75rem;
    color: var(--primary-blue-dark);
}

.service-link i {
    font-size: 0.875rem;
}

/* ================================
   Why Choose Us Section
   ================================ */

.why-choose {
    background: var(--white);
}

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

.why-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 2px solid var(--gray-200);
    transition: all var(--transition-base);
}

.why-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-lg);
}

.why-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    color: var(--primary-blue);
    font-size: 1.75rem;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-base);
}

.why-card:hover .why-icon {
    background: var(--primary-blue);
    color: var(--white);
    transform: scale(1.1);
}

.why-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.why-card p {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--gray-600);
    margin: 0;
}

/* ================================
   Testimonials Section
   ================================ */

.testimonials {
    background: var(--gray-50);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.testimonial-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.testimonial-rating {
    display: flex;
    gap: 0.25rem;
    margin-bottom: var(--spacing-md);
}

.testimonial-rating i {
    color: #fbbf24;
    font-size: 1.125rem;
}

.testimonial-text {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--gray-700);
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 2px solid var(--gray-100);
}

.author-avatar {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-blue);
    color: var(--white);
    font-size: 1.25rem;
    border-radius: var(--radius-full);
}

.author-info h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
    font-weight: 600;
}

.author-info p {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin: 0;
}

.testimonials-cta {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.testimonials-cta p {
    font-size: 1.125rem;
    color: var(--gray-700);
    margin-bottom: var(--spacing-md);
}

/* ================================
   Areas We Serve Section
   ================================ */

.areas {
    background: var(--white);
}

.areas-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: start;
}

.areas-content {
    padding-right: var(--spacing-lg);
}

.areas-description {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
}

.cities-list h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    color: var(--gray-900);
}

.cities-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.city-item {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.75rem;
    background: var(--gray-50);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--gray-700);
    transition: all var(--transition-base);
}

.city-item:hover {
    background: var(--primary-blue);
    color: var(--white);
}

.city-item i {
    color: var(--primary-blue);
    font-size: 1rem;
}

.city-item:hover i {
    color: var(--white);
}

.areas-info {
    padding: var(--spacing-lg);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary-blue);
    margin-bottom: var(--spacing-xl);
}

.areas-info p {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--gray-700);
}

.areas-map {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    height: 600px;
}

.map-container {
    width: 100%;
    height: 100%;
}

.map-overlay {
    position: absolute;
    bottom: 2rem;
    left: 2rem;
    right: 2rem;
}

.map-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.map-info i {
    font-size: 2rem;
    color: var(--primary-blue);
}

.map-info strong {
    display: block;
    font-size: 1.125rem;
    color: var(--gray-900);
}

.map-info p {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin: 0;
}

/* ================================
   FAQ Section
   ================================ */

.faq {
    background: var(--gray-50);
}

.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--gray-900);
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-base);
    background: var(--white);
}

.faq-question:hover {
    color: var(--primary-blue);
}

.faq-question i {
    font-size: 1rem;
    color: var(--primary-blue);
    transition: transform var(--transition-base);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 var(--spacing-lg) var(--spacing-lg);
}

.faq-answer p {
    font-size: 0.9375rem;
    line-height: 1.8;
    color: var(--gray-600);
}

.faq-answer a {
    color: var(--primary-blue);
    font-weight: 600;
}

.faq-answer a:hover {
    text-decoration: underline;
}

/* ================================
   CTA Banner
   ================================ */

.cta-banner {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: var(--white);
    padding: var(--spacing-3xl) 0;
}

.cta-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.cta-text h2 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.cta-text p {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    color: rgba(255, 255, 255, 0.95);
}

.cta-features {
    display: grid;
    gap: var(--spacing-sm);
}

.cta-feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1rem;
    font-weight: 500;
}

.cta-feature i {
    color: var(--accent-orange);
    font-size: 1.25rem;
}

.cta-action {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.btn-cta {
    flex-direction: column;
    gap: 0.375rem;
    width: 100%;
    max-width: 350px;
}

.btn-cta i {
    font-size: 1.75rem;
}

.cta-label {
    font-size: 0.875rem;
    font-weight: 500;
    opacity: 0.9;
}

.cta-phone {
    font-size: 1.75rem;
    font-weight: 800;
}

.cta-availability {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.9);
}

.cta-availability i {
    color: var(--accent-orange);
}

/* ================================
   Footer
   ================================ */

.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.footer-logo i {
    font-size: 2rem;
    color: var(--primary-blue);
}

.footer-description {
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.footer-contact {
    display: grid;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9375rem;
}

.contact-item i {
    color: var(--primary-blue);
    font-size: 1.125rem;
    width: 20px;
}

.contact-item a {
    color: var(--gray-300);
    transition: color var(--transition-base);
}

.contact-item a:hover {
    color: var(--primary-blue);
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-800);
    color: var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 1.125rem;
    transition: all var(--transition-base);
}

.footer-social a:hover {
    background: var(--primary-blue);
    color: var(--white);
    transform: translateY(-3px);
}

.footer-col h3 {
    color: var(--white);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
}

.footer-links {
    display: grid;
    gap: 0.625rem;
}

.footer-links a {
    font-size: 0.9375rem;
    color: var(--gray-300);
    transition: all var(--transition-base);
    display: inline-block;
}

.footer-links a:hover {
    color: var(--primary-blue);
    padding-left: 0.5rem;
}

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: var(--spacing-lg);
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.copyright {
    font-size: 0.875rem;
    color: var(--gray-400);
}

.footer-certifications {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.footer-certifications span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--gray-400);
}

.footer-certifications i {
    color: var(--accent-orange);
}

/* ================================
   Back to Top Button
   ================================ */

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--primary-blue);
    color: var(--white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-xl);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-blue-dark);
    transform: translateY(-5px);
}

/* ================================
   Responsive Design
   ================================ */

@media (max-width: 1024px) {
    :root {
        --container-padding: 1.25rem;
        --spacing-3xl: 4rem;
    }
    
    .about-grid,
    .areas-grid,
    .cta-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .about-content,
    .areas-content {
        padding-right: 0;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
        --spacing-2xl: 2.5rem;
        --spacing-3xl: 3rem;
    }
    
    /* Header Mobile */
    .nav {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--white);
        padding: var(--spacing-xl);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
        box-shadow: var(--shadow-xl);
    }
    
    .nav.active {
        transform: translateX(0);
    }
    
    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .nav-link {
        width: 100%;
        padding: 0.875rem;
        font-size: 1.125rem;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .mobile-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    /* Hero Mobile */
    .hero {
        min-height: auto;
        padding: 6rem 0 4rem;
    }
    
    .hero-features {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-trust {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    /* Services Grid */
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    /* Why Choose Grid */
    .why-choose-grid {
        grid-template-columns: 1fr;
    }
    
    /* Testimonials Grid */
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    /* Cities Grid */
    .cities-grid {
        grid-template-columns: 1fr;
    }
    
    /* Areas Map */
    .areas-map {
        height: 400px;
    }
    
    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }
    
    /* Buttons */
    .btn-large,
    .btn-cta {
        width: 100%;
    }
    
    /* About Image */
    .about-image img {
        height: 400px;
    }
    
    .about-badge {
        bottom: 1rem;
        left: 1rem;
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.25rem;
    }
    
    .logo i {
        font-size: 1.5rem;
    }
    
    .btn {
        padding: 0.75rem 1.25rem;
        font-size: 0.9375rem;
    }
    
    .btn-call span {
        display: none;
    }
    
    .service-card,
    .why-card,
    .testimonial-card {
        padding: var(--spacing-lg);
    }
    
    .cta-phone {
        font-size: 1.5rem;
    }
    
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
    }
}

@media (min-width: 1024px) {
    .hero {
        padding-top: 110px; /* Base 80px + 30px extra */
    }
}