/* Reset et Variables CSS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Couleurs principales */
    --primary-color: #1e40af;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --accent-color: #0ea5e9;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --white: #ffffff;
    --gray-light: #f8fafc;
    --gray-medium: #e2e8f0;
    --gray-dark: #475569;
    
    /* Typography */
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
    --font-size-xl: 3.5rem;
    --font-size-lg: 2.5rem;
    --font-size-md: 1.5rem;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    
    /* 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);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* Base styles */
body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

h2 {
    font-size: var(--font-size-lg);
}

h3 {
    font-size: var(--font-size-md);
}

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

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

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

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

.btn-secondary {
    background-color: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

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

.btn-large {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1.125rem;
}

/* Section styling */
section {
    padding: var(--spacing-2xl) 0;
}

.section-title {
    font-size: var(--font-size-lg);
    color: var(--text-dark);
    margin-bottom: var(--spacing-xl);
}

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: var(--white);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

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

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

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-dark);
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.8) 0%, rgba(14, 165, 233, 0.6) 100%);
    z-index: -1;
}

.hero-content {
    color: var(--white);
    max-width: 800px;
    z-index: 1;
}

.hero-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 400;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

/* About Section */
.about {
    background-color: var(--gray-light);
}

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

.about-features {
    margin-top: var(--spacing-lg);
    display: grid;
    gap: var(--spacing-sm);
}

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

.feature-icon {
    font-size: 1.25rem;
}

.about-img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    background-color: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border: 1px solid var(--gray-medium);
}

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

.service-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    display: block;
}

.service-title {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

/* Zone Section */
.zone {
    background-color: var(--gray-light);
}

.zone-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.zone-text {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
}

.zone-cities {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
}

.city {
    background-color: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 500;
}

/* Gallery */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.gallery-item {
    position: relative;
    height: 250px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease;
}

.gallery-item:hover {
    transform: scale(1.05);
}

.gallery-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: var(--white);
    padding: var(--spacing-lg);
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.gallery-item:hover .gallery-overlay {
    transform: translateY(0);
}

/* Avis Section */
.avis {
    background-color: var(--gray-light);
}

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

.avis-card {
    background-color: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
}

.stars {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.avis-text {
    font-style: italic;
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
}

.avis-author {
    color: var(--primary-color);
    font-weight: 600;
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
}

.contact-details {
    margin-top: var(--spacing-xl);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.contact-icon {
    font-size: 1.5rem;
    margin-top: 2px;
}

.contact-item a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.contact-item a:hover {
    text-decoration: underline;
}

/* Form Styles */
.contact-form-container {
    background-color: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid var(--gray-medium);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: var(--font-size-sm);
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
}

/* Footer */
.footer {
    background-color: var(--text-dark);
    color: var(--white);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

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

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

.footer-links a {
    color: var(--white);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--gray-dark);
    color: var(--gray-medium);
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --font-size-xl: 2.5rem;
        --font-size-lg: 2rem;
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    /* Header Mobile */
    .nav {
        position: fixed;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--white);
        box-shadow: var(--shadow-lg);
        transition: top 0.3s ease;
    }

    .nav.active {
        top: 100%;
    }

    .nav-list {
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
    }

    .header-cta {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    /* Hero Mobile */
    .hero-title {
        font-size: var(--font-size-lg);
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    /* About Mobile */
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    /* Services Mobile */
    .services-grid {
        grid-template-columns: 1fr;
    }

    /* Contact Mobile */
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    /* Footer Mobile */
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-cta .btn {
        width: 100%;
        justify-content: center;
    }
    
    .gallery {
        grid-template-columns: 1fr;
    }
    
    .avis-grid {
        grid-template-columns: 1fr;
    }
    
    .zone-cities {
        justify-content: flex-start;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Smooth scroll */
html {
    scroll-behavior: smooth;
}

/* Focus states for accessibility */
.btn:focus,
input:focus,
textarea:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Loading state */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Success message */
.success-message {
    background-color: #10b981;
    color: white;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-sm);
    display: none;
}

.success-message.show {
    display: block;
    animation: fadeInUp 0.3s ease-out;
}

/* Styles spécifiques pour la page de service changement de toiture */

/* Service Introduction */
.service-intro {
    background-color: var(--gray-light);
}

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

.service-description {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
}

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

.highlight {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.highlight-icon {
    font-size: 1.5rem;
    margin-top: 2px;
}

.service-img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

/* Why Change Section */
.why-change {
    background-color: var(--white);
}

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

.why-card {
    background-color: var(--gray-light);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

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

.why-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.why-card ul {
    list-style: none;
    text-align: left;
    margin-top: var(--spacing-md);
}

.why-card li {
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--gray-medium);
}

.why-card li:last-child {
    border-bottom: none;
}

/* Roofing Types Section */
.roofing-types {
    background-color: var(--gray-light);
}

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

.type-card {
    background-color: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary-color);
}

.type-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.type-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    display: block;
}

.type-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
}

.feature-tag {
    background-color: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.expert-advice {
    background-color: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
}

.expert-advice h3 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

/* Process Timeline */
.process {
    background-color: var(--white);
}

.process-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.process-timeline::before {
    content: '';
    position: absolute;
    left: 50px;
    top: 0;
    bottom: 0;
    width: 3px;
    background-color: var(--primary-color);
}

.process-step {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
    box-shadow: var(--shadow-md);
}

.step-content {
    background-color: var(--gray-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    flex: 1;
    margin-top: var(--spacing-sm);
}

.step-content h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

/* Gallery Service */
.gallery-service {
    background-color: var(--gray-light);
}

.gallery-service .gallery {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* Avis Service */
.avis-service {
    background-color: var(--white);
}

.avis-service .avis-grid {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

/* Form select styling */
select {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid var(--gray-medium);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    background-color: var(--white);
    transition: border-color 0.3s ease;
}

select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Responsive pour page de service */
@media (max-width: 768px) {
    .service-intro-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .why-grid {
        grid-template-columns: 1fr;
    }
    
    .types-grid {
        grid-template-columns: 1fr;
    }
    
    .process-timeline::before {
        left: 30px;
    }
    
    .step-number {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
    }
    
    .step-content {
        margin-top: 0;
    }
    
    .process-step {
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .service-highlights {
        gap: var(--spacing-sm);
    }
    
    .highlight {
        flex-direction: column;
        text-align: center;
    }
    
    .type-features {
        justify-content: center;
    }
    
    .expert-advice {
        padding: var(--spacing-lg);
    }
}