/* --- CONFIGURATION DES COULEURS --- */
:root {
    --navbar-blue: #204a5e;      /* Bleu exact de votre menu */
    --cyan-color: #00a8e8;       /* Bleu Cyan pour tous les boutons et accents */
    --dark-orange: #d35400;      /* Orange brique/sombre uniquement pour le survol discret du menu */
    --black-color: #111111;      /* Noir profond */
    --dark-gray: #222222;        /* Variante de noir pour les contrastes */
    --light-bg: #f8f9fa;         /* Fond clair */
    --white: #ffffff;            /* Blanc */
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    scroll-behavior: smooth;
}

body {
    color: var(--black-color);
    background-color: var(--white);
    line-height: 1.6;
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* --- TITRES --- */
.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.subtitle {
    color: var(--cyan-color);
    text-transform: uppercase;
    font-weight: bold;
    letter-spacing: 1px;
    font-size: 14px;
    display: block;
    margin-bottom: 5px;
}

.section-title h2 {
    font-size: 32px;
    color: var(--black-color);
    position: relative;
    padding-bottom: 15px;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--navbar-blue);
}

/* --- TOUS LES BOUTONS EN CYAN --- */
.btn {
    display: inline-block;
    padding: 12px 28px;
    font-weight: 600;
    border-radius: 4px;
    transition: var(--transition);
    cursor: pointer;
}

.btn-primary {
    background-color: var(--cyan-color);
    color: var(--white);
    border: none;
}

.btn-primary:hover {
    background-color: #008cc2;
    transform: translateY(-2px);
}

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

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

/* --- BARRE DE NAVIGATION --- */
header {
    background-color: var(--navbar-blue);
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1140px;
    margin: 0 auto;
    padding: 10px 20px;
}

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

.logo-img {
    height: 50px;
    width: auto;
    object-fit: contain;
}

nav ul {
    display: flex;
    align-items: center;
}

nav ul li {
    margin-left: 24px;
}

/* Liens du menu : Tout blanc par défaut (Accueil et Contactez-nous libres et sans encadré) */
nav ul li a {
    color: var(--white);
    font-weight: 500;
    font-size: 15px;
    transition: var(--transition);
    padding: 5px 0;
}

nav ul li a i {
    margin-right: 5px;
}

/* Devient orange sombre UNIQUEMENT quand le pointeur de la souris est dessus */
nav ul li a:hover {
    color: var(--dark-orange);
}

/* --- HERO SECTION --- */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(17, 17, 17, 0.75), rgba(17, 17, 17, 0.85)), 
                url('https://images.unsplash.com/photo-1541888946425-d81bb19240f5?auto=format&fit=crop&w=1500&q=80') no-repeat center center/cover;
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--white);
    padding-top: 80px;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h2 {
    font-size: 52px;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero p {
    font-size: 19px;
    margin-bottom: 35px;
    color: #e0e0e0;
}

.hero-buttons .btn {
    margin: 0 10px;
}

/* --- SECTION A PROPOS --- */
.about {
    padding: 100px 0;
    background-color: var(--white);
}

.about .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-text h2 {
    font-size: 34px;
    color: var(--black-color);
    margin-bottom: 20px;
}

.about-text p {
    margin-bottom: 30px;
    color: #555;
}

.features .feature-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 25px;
}

.feature-item i {
    font-size: 28px;
    color: var(--navbar-blue);
    margin-right: 20px;
    background: rgba(32, 74, 94, 0.1);
    padding: 12px;
    border-radius: 8px;
}

.feature-item h3 {
    color: var(--black-color);
    margin-bottom: 5px;
}

.about-img img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
    border-bottom: 5px solid var(--cyan-color);
}

/* --- SECTION SERVICES --- */
.services {
    background-color: var(--light-bg);
    padding: 100px 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: var(--white);
    padding: 40px 30px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    transition: var(--transition);
    border-bottom: 4px solid transparent;
}

.service-card:hover {
    transform: translateY(-5px);
    border-bottom: 4px solid var(--cyan-color);
}

.service-card i {
    font-size: 42px;
    color: var(--cyan-color);
    margin-bottom: 20px;
}

.service-card h3 {
    margin-bottom: 15px;
    color: var(--black-color);
}

/* --- SECTION REALISATIONS --- */
.portfolio {
    padding: 100px 0;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.portfolio-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    height: 260px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.portfolio-item .overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(17, 17, 17, 0.85);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: var(--transition);
    border: 3px solid var(--navbar-blue);
}

.portfolio-item:hover .overlay {
    opacity: 1;
}

.portfolio-item:hover img {
    transform: scale(1.08);
}

.overlay h3 {
    color: var(--white);
    font-size: 20px;
}

/* --- SECTION CONTACT --- */
.contact {
    background-color: var(--black-color);
    color: var(--white);
    padding: 100px 0;
}

.contact .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.contact-info h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.contact-info p {
    color: #bbb;
    margin-bottom: 30px;
}

.info-details p {
    margin-bottom: 20px;
    font-size: 18px;
}

.info-details i {
    color: var(--navbar-blue);
    margin-right: 15px;
}

.contact-form {
    background-color: var(--dark-gray);
    padding: 40px;
    border-radius: 8px;
    border: 1px solid #333;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px;
    background-color: #1a1a1a;
    border: 1px solid #444;
    color: var(--white);
    border-radius: 4px;
    font-size: 15px;
    outline: none;
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--navbar-blue);
}

.contact-form .btn {
    width: 100%;
    border: none;
}

/* --- FOOTER --- */
footer {
    background-color: #0a0a0a;
    color: #777;
    text-align: center;
    padding: 25px 20px;
    font-size: 14px;
    border-top: 1px solid #222;
}

/* --- RESPONSIVE DESIGN (MOBILE / TABLETTE) --- */
.menu-checkbox, .menu-toggle {
    display: none;
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
        color: var(--white);
        font-size: 26px;
        cursor: pointer;
        z-index: 1001;
    }

    .menu-toggle .icon-close {
        display: none;
    }

    nav {
        display: block;
        position: fixed;
        top: -100vh;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: var(--navbar-blue);
        padding-top: 120px;
        transition: all 0.4s ease-in-out;
        z-index: 1000;
    }

    nav ul {
        flex-direction: column;
        align-items: center;
    }

    nav ul li {
        margin: 22px 0;
        margin-left: 0;
    }

    nav ul li a {
        font-size: 22px;
    }

    nav ul li a:hover {
        color: var(--dark-orange);
    }

    .menu-checkbox:checked ~ nav {
        top: 0;
    }

    .menu-checkbox:checked ~ .menu-toggle .icon-bars {
        display: none;
    }
    .menu-checkbox:checked ~ .menu-toggle .icon-close {
        display: block;
    }

    .about .container, .contact .container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero h2 {
        font-size: 34px;
    }
    
    .about-img {
        order: -1;
    }
}