/* --- Variables & Reset --- */
:root {
    --primary: #2563eb;    /* Bleu Professionnel */
    --secondary: #1e3a8a;  /* Bleu Foncé */
    --white: #ffffff;
    --black: #0f172a;
    --light-grey: #f1f5f9;
    --text-grey: #64748b;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    color: var(--black);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

img {
    max-width: 100%;
    border-radius: 12px;
}

/* --- Navigation --- */
.navbar {
    background: var(--white);
    height: 80px;
    display: flex;
    align-items: center;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 15px rgba(0,0,0,0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--black);
}

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

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--black);
    font-weight: 500;
    transition: var(--transition);
}

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

.menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* --- Buttons --- */
.btn {
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    display: inline-block;
    transition: var(--transition);
    cursor: pointer;
}

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

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

.btn-outline {
    border: 2px solid var(--white);
    color: var(--white);
    margin-left: 15px;
}

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

/* --- Hero Section --- */
.hero {
    height: 100vh;
    background: linear-gradient(135deg, var(--black) 0%, var(--secondary) 100%);
    display: flex;
    align-items: center;
    color: var(--white);
    padding-top: 80px;
}

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

.hero h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 30px;
}

/* --- Services --- */
.services {
    padding: 100px 0;
    background: var(--light-grey);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--primary);
    margin: 10px auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--white);
    padding: 40px;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition);
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
}

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

.service-card i {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 20px;
}

/* --- About Section --- */
.about {
    padding: 100px 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-list {
    list-style: none;
    margin-top: 20px;
}

.about-list li {
    margin-bottom: 10px;
}

.about-list i {
    color: var(--primary);
    margin-right: 10px;
}

/* --- Contact Section --- */
.contact {
    padding: 100px 0;
    background: var(--black);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
}

.white { color: var(--white); }

.contact-info {
    color: var(--white);
}

.info-item {
    display: flex;
    align-items: center;
    margin-bottom: 25px;
}

.info-item i {
    width: 50px;
    height: 50px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
}

.contact-form input, 
.contact-form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 8px;
    border: none;
    background: #1e293b;
    color: white;
    font-family: inherit;
}

/* --- Footer --- */
.footer {
    padding: 50px 0;
    text-align: center;
    border-top: 1px solid #1e293b;
    background: var(--black);
    color: var(--white);
}

.socials {
    margin-top: 20px;
}

.socials a {
    color: var(--white);
    font-size: 1.5rem;
    margin: 0 15px;
    transition: var(--transition);
}

.socials a:hover {
    color: var(--primary);
}

/* --- Responsive --- */
@media (max-width: 992px) {
    .hero .container, .about-content, .contact-wrapper {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero {
        height: auto;
        padding: 150px 0 80px;
    }
    .hero-img {
        order: -1;
    }
    .hero h1 { font-size: 2.5rem; }
    .about-list { text-align: left; display: inline-block; }
    .nav-links { display: none; } /* Pour un menu burger réel, il faudrait un peu de JS */
    .menu-btn { display: block; }
}