/* Variables */
:root {
    /* Nouvelle palette de couleurs */
    --primary-color: #0F3460; /* Bleu profond */
    --secondary-color: #16A085; /* Vert-turquoise */
    --accent-color: #FF6B6B; /* Corail */
    --text-color: #1E293B; /* Gris foncé pour le texte */
    --text-secondary: #64748B; /* Gris moyen pour texte secondaire */
    --light-text: #ffffff; /* Texte clair */
    --light-bg: #F8FAFC; /* Fond très clair */
    --alt-bg: #E9F7F2; /* Fond alternatif */
    --dark-bg: #0F3460; /* Fond sombre */
    --success-color: #10B981; /* Vert pour succès */
    --error-color: #EF4444; /* Rouge pour erreurs */
    
    /* Espacement et dimensions - système basé sur 8px */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 64px;
    --spacing-xxl: 120px;
    --section-padding: 120px;
    --container-width: 1200px;
    
    /* Effets et transitions */
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
    --hover-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    
    /* Typographie */
    --heading-font: 'Montserrat', sans-serif;
    --body-font: 'Roboto', sans-serif;
    --mono-font: 'Roboto Mono', monospace;
}

/* Reset & Base Styles */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--body-font);
    line-height: 1.7;
    color: var(--text-color);
    overflow-x: hidden;
    background-color: var(--light-bg);
}

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

h1 {
    font-size: 3.5rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2.5rem;
    letter-spacing: -0.01em;
    text-align: center;
    position: relative;
    margin-bottom: var(--spacing-lg);
}

h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--secondary-color);
    margin: var(--spacing-sm) auto 0;
    border-radius: 2px;
}

h3 {
    font-size: 1.75rem;
    font-weight: 600;
}

h4 {
    font-size: 1.25rem;
    font-weight: 600;
}

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

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

.container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Navbar modernisée */
.navbar {
    background: rgba(15, 52, 96, 0.95); /* Nouvelle couleur primaire avec transparence */
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    transition: var(--transition);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
}

.logo {
    height: 50px;
    width: auto;
    transition: var(--transition);
}

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

.nav-links a {
    color: var(--light-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: var(--transition);
}

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

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

.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    z-index: 1001;
}

.hamburger .bar {
    display: block;
    width: 25px;
    height: 2px;
    background: white;
    margin: 6px 0;
    transition: var(--transition);
    border-radius: 1px;
}

/* Hero Section modernisée */
.hero {
    background: linear-gradient(135deg, rgba(15, 52, 96, 0.9), rgba(15, 52, 96, 0.8)), url('https://elbettal.com/images/elbettal-banner-desktop.webp');
    background-size: cover;
    background-position: center;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--light-text);
    padding: var(--spacing-xl);
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(to top, var(--light-bg), transparent);
    z-index: 1;
}

.hero-content {
    max-width: 800px;
    z-index: 2;
    animation: fadeIn 1s ease-out;
}

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

.hero-content h1 {
    font-size: 4rem;
    color: var(--light-text);
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    letter-spacing: -0.02em;
}

.hero-content p {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
    font-weight: 300;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Bouton CTA modernisé */
.cta-btn {
    display: inline-block;
    background: var(--secondary-color);
    color: var(--light-text);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-sm);
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: 2px solid var(--secondary-color);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.cta-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transition: var(--transition);
    z-index: -1;
}

.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--hover-shadow);
}

.cta-btn:hover::before {
    width: 100%;
}

/* Sections */
.section {
    padding: var(--section-padding) 0;
    position: relative;
    overflow: hidden;
}

.section:nth-child(even) {
    background-color: var(--alt-bg);
}

.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--primary-color), transparent);
    opacity: 0.1;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.2rem;
    max-width: 800px;
    margin: -1rem auto var(--spacing-xl);
    line-height: 1.6;
    position: relative;
}

/* Services Grid modernisée */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    padding: var(--spacing-md) 0;
}

.service-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
    text-align: center;
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--hover-shadow);
}

.service-card img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: var(--transition);
}

.service-card:hover img {
    transform: scale(1.05);
}

.service-card-content {
    padding: var(--spacing-lg) var(--spacing-md);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.service-card h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin: 0 0 var(--spacing-sm);
    padding: 0 var(--spacing-sm);
    text-align: center;
    position: relative;
}

.service-card p {
    padding: 0 var(--spacing-sm);
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

.service-card .card-link {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 500;
    display: inline-block;
    position: relative;
    padding-bottom: 2px;
    align-self: center;
    margin-top: auto;
}

.service-card .card-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--secondary-color);
    transition: var(--transition);
}

.service-card .card-link:hover::after {
    height: 2px;
}

/* Contact Section modernisée */
#contact {
    background: var(--light-bg);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    align-items: stretch;
    max-width: 900px;
    margin: 0 auto;
    width: 90%;
}

.contact-info,
.contact-direct {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.contact-info:hover,
.contact-direct:hover {
    transform: translateY(-5px);
    box-shadow: var(--hover-shadow);
}

/* Première section : Informations de contact */
.contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
    text-align: center;
}

.contact-info p {
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
    color: var(--text-secondary);
    text-align: center;
}

.contact-methods {
    list-style: none;
    padding: 0;
    margin: var(--spacing-lg) 0;
}

.contact-methods li {
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.contact-methods li i {
    color: var(--secondary-color);
    font-size: 1.2rem;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-methods li strong {
    font-weight: 600;
    color: var(--primary-color);
    margin-right: var(--spacing-xs);
}

.contact-methods li a {
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.contact-methods li a:hover {
    color: var(--secondary-color);
}

/* Deuxième section : Contact direct */
.contact-direct h3 {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-lg);
    color: var(--primary-color);
    text-align: center;
}

.contact-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.contact-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    text-decoration: none;
    transition: var(--transition);
    color: white;
    gap: var(--spacing-sm);
}

.contact-btn i {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
}

.contact-btn span {
    font-weight: 600;
    font-size: 1.1rem;
}

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

.phone-btn {
    background: var(--secondary-color);
}

.whatsapp-btn-large {
    background: #25D366;
}

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

.contact-note {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--alt-bg);
    border-radius: var(--border-radius-sm);
    text-align: center;
}

.contact-note p {
    margin-bottom: 0;
    color: var(--text-secondary);
    font-style: italic;
}

/* Footer modernisé */
.footer {
    background: var(--primary-color);
    color: var(--light-text);
    padding: var(--spacing-xl) 0;
    text-align: center;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: var(--secondary-color);
}

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

.footer a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

.footer p {
    margin-bottom: var(--spacing-sm);
    opacity: 0.9;
}

.legal-link {
    margin-top: var(--spacing-md);
    font-size: 0.9rem;
    opacity: 0.8;
}

/* WhatsApp Button modernisé */
.whatsapp-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: #25D366;
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    z-index: 100;
}

.whatsapp-btn:hover {
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--hover-shadow);
}

.whatsapp-btn::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: #25D366;
    opacity: 0.4;
    z-index: -1;
    transform: scale(0);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(0.95);
        opacity: 0.7;
    }
    70% {
        transform: scale(1.3);
        opacity: 0;
    }
    100% {
        transform: scale(0.95);
        opacity: 0;
    }
}

/* About Section modernisée */
#about {
    position: relative;
    overflow: hidden;
}

#about .container {
    max-width: 900px;
    text-align: center;
}

#about p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 1200px) {
    :root {
        --section-padding: 100px;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    h1 {
        font-size: 3rem;
    }
    
    h2 {
        font-size: 2.2rem;
    }
}

@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }
    
    .hero {
        background-image: url('https://elbettal.com/images/elbettal-banner-tablet.jpg'); 
    }
    
    .hero-content h1 {
        font-size: 3rem;
    }
    
    .hero-content p {
        font-size: 1.3rem;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }
    
    /* Navigation mobile */
    .navbar .container {
        flex-direction: row;
        justify-content: space-between;
    }
    
    .logo {
        height: 40px;
    }
    
    .hamburger {
        display: block;
    }
    
    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background: var(--primary-color);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        padding: var(--spacing-xl) 0;
        transition: var(--transition-slow);
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .nav-links a {
        font-size: 1.2rem;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .nav-links a::after {
        bottom: -2px;
    }

    /* Hero mobile */
    .hero {
        background-image: url('https://elbettal.com/images/elbettal-banner-mobile.jpg'); 
        min-height: 80vh;
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .hero-content h1 {
        font-size: 2.5rem;
        color: var(--primary-color);
    }

    .hero-content p {
        font-size: 1.2rem;
        color: var(--primary-color);
    }
    
    /* Centrage des titres et sous-titres en mobile */
    h1, h2, h3, h4, h5, h6, .section-subtitle {
        text-align: center;
    }
    
    h2::after {
        margin: var(--spacing-sm) auto 0;
    }
    
    #about p, 
    #contact .section-subtitle {
        text-align: center;
    }
    
    .contact-info h3 {
        text-align: center;
    }
    
    .contact-info p {
        text-align: center;
    }

    /* Services mobile */
    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

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

    .contact-info,
    .contact-direct {
        padding: var(--spacing-lg);
    }
    
    .contact-buttons {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --section-padding: 50px;
    }
    
    html {
        font-size: 15px;
    }
    
    /* Hero mobile petit écran */
    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 1.1rem;
    }
    
    h2 {
        font-size: 1.8rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }

    /* Contact mobile petit écran */
    .contact-info h3,
    .contact-direct h3 {
        font-size: 1.6rem;
    }

    .contact-info,
    .contact-direct {
        padding: var(--spacing-md);
    }
    
    .whatsapp-btn {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
        bottom: 20px;
        right: 20px;
    }
}

/* Animations au défilement */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* Accessibilité */
:focus {
    outline: 3px solid var(--secondary-color);
    outline-offset: 3px;
}

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

/* Ajout d'un bouton retour en haut */
.back-to-top {
    position: fixed;
    bottom: 30px;
    left: 30px;
    background: var(--primary-color);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    z-index: 100;
    opacity: 0;
    visibility: hidden;
}

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

.back-to-top:hover {
    background: var(--secondary-color);
    transform: translateY(-5px);
}