/* ==== VARIABLES & GLOBAL STYLES V2.0 ==== */
:root {
    --primary-color: #0B1C39; /* Bleu Nuit */
    --secondary-color: #C9A227; /* Or */
    --light-bg-color: #F5F7FA;
    --white-color: #FFFFFF;
    --text-color: #333333;
    --text-light: #555555;
    --font-primary: 'Montserrat', sans-serif;
    --font-secondary: 'Roboto', sans-serif;
    --box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    --border-radius: 12px;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-secondary);
    background-color: var(--light-bg-color);
    color: var(--text-color);
}

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

.section-title {
    font-family: var(--font-primary);
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 50px;
    text-align: center;
    position: relative;
}

.section-title::after {
    content: "";
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--secondary-color);
    margin: 10px auto 0;
    border-radius: 2px;
}

.btn {
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-primary);
    border-radius: 8px;
    transition: all 0.3s ease;
    text-decoration: none;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--secondary-color);
    color: var(--primary-color);
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(201, 162, 39, 0.4);
}

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

/* ==== HEADER / NAVBAR V2.0 ==== */
.navbar {
    background-color: var(--white-color);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: box-shadow 0.3s ease, padding 0.3s ease;
}

.navbar.scrolled {
    box-shadow: var(--box-shadow);
    padding: 10px 0;
}

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

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    font-family: var(--font-primary);
    color: var(--primary-color);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 35px;
}

.nav-links a {
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 500;
    position: relative;
    transition: color 0.3s ease;
}

.nav-links a::after {
    content: "";
    position: absolute;
    width: 0%;
    height: 2px;
    background-color: var(--secondary-color);
    left: 0;
    bottom: -5px;
    transition: 0.3s;
}

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

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

.burger {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary-color);
}

/* ==== HERO SECTION V2.0 ==== */
.hero-section {
    position: relative;
    background: url('images/hero-bg.jpg') center/cover no-repeat;
    min-height: 90vh;
    color: var(--white-color);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 100px 20px;
}

.hero-section .overlay {
    position: absolute;
    inset: 0;
    background: rgba(11, 28, 57, 0.7);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero-content h1 {
    font-family: var(--font-primary);
    font-size: 3.2rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--secondary-color);
    text-transform: uppercase;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* ==== SECTIONS GENERIC STYLES V2.0 ==== */
.about-section, .services-section, .key-principles-section, .avantages-section, .contact-section {
    padding: 100px 20px;
}

.services-section, .key-principles-section, .avantages-section {
    background-color: var(--white-color);
}

/* ==== ABOUT SECTION V2.0 ==== */
.about-container {
    display: flex;
    gap: 50px;
    align-items: center;
}

.about-image { flex: 1; }
.about-image img {
    max-width: 100%;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.about-text { flex: 1.2; }
.about-text .section-title { text-align: left; }
.about-text .section-title::after { margin-left: 0; }
.about-text p { line-height: 1.7; color: var(--text-light); }
.about-text .intro { font-weight: 600; font-size: 1.1rem; color: var(--text-color); }

/* ==== SERVICES SECTION V2.0 ==== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}
.service-card {
    background-color: var(--light-bg-color);
    padding: 30px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}
.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--box-shadow);
}
.service-card i { font-size: 2.5rem; color: var(--secondary-color); margin-bottom: 20px; }
.service-card h3 { font-family: var(--font-primary); font-size: 1.3rem; margin-bottom: 10px; }
.service-card p { font-size: 0.95rem; line-height: 1.6; color: var(--text-light); }


/* ==== KEY PRINCIPLES SECTION V2.0 ==== */
.principles-container {
    max-width: 900px;
}
.principle {
    display: flex;
    gap: 30px;
    align-items: center;
    background: var(--light-bg-color);
    padding: 30px;
    border-radius: var(--border-radius);
    margin-bottom: 30px;
}
.principle-icon i { font-size: 3rem; color: var(--secondary-color); }
.principle-text h3 { font-family: var(--font-primary); margin-top: 0; }
.principle-text p { color: var(--text-light); line-height: 1.6; }

/* ==== AVANTAGES SECTION V2.0 ==== */
.avantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}
.avantage-card {
    background-color: var(--light-bg-color);
    padding: 30px;
    border-radius: var(--border-radius);
    text-align: center;
    border: 2px solid transparent;
    transition: transform 0.3s, border-color 0.3s;
}
.avantage-card:hover {
    transform: translateY(-5px);
    border-color: var(--secondary-color);
}
.avantage-card i { font-size: 2.5rem; color: var(--secondary-color); margin-bottom: 20px; }
.avantage-card h3 { font-family: var(--font-primary); font-size: 1.3rem; }
.avantage-card p { color: var(--text-light); line-height: 1.6; }

/* ==== CONTACT SECTION V2.0 ==== */
.contact-content {
    display: flex;
    gap: 50px;
    background: var(--white-color);
    padding: 50px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}
.contact-info { flex: 1; }
.contact-info h3, .contact-form h3 { font-family: var(--font-primary); font-size: 1.5rem; color: var(--primary-color); }
.contact-info p { margin: 15px 0; display: flex; align-items: center; gap: 15px; }
.contact-info i { color: var(--secondary-color); font-size: 1.2rem; }
.social-links { margin-top: 25px; display: flex; gap: 15px; }
.social-links a {
    color: var(--primary-color);
    font-size: 1.3rem;
    transition: color 0.3s;
}
.social-links a:hover { color: var(--secondary-color); }

.contact-form { flex: 1.5; }
.form-group { margin-bottom: 20px; }
.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-family: var(--font-secondary);
    font-size: 1rem;
    transition: border-color 0.3s;
}
.contact-form input:focus, .contact-form textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
}
.btn-submit { width: 100%; background-color: var(--primary-color); color: var(--white-color); }
.btn-submit:hover { background-color: var(--secondary-color); }

/* ==== FOOTER V2.0 ==== */
.site-footer {
    background-color: var(--primary-color);
    color: var(--white-color);
    padding: 60px 20px 20px;
}
.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 40px;
    padding-bottom: 40px;
}
.footer-brand, .footer-links, .footer-contact { flex: 1; min-width: 220px; }
.footer-brand h3 { font-family: var(--font-primary); color: var(--secondary-color); font-size: 1.5rem; }
.footer-links h4, .footer-contact h4 { font-family: var(--font-primary); color: var(--secondary-color); }
.footer-links ul { list-style: none; padding: 0; }
.footer-links ul li { margin-bottom: 10px; }
.footer-links a { color: var(--white-color); text-decoration: none; transition: color 0.3s; }
.footer-links a:hover { color: var(--secondary-color); }
.footer-contact p { display: flex; align-items: center; gap: 10px; }
.social-icons a { color: var(--white-color); margin-right: 15px; transition: color 0.3s; }
.social-icons a:hover { color: var(--secondary-color); }
.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 0.9rem;
}

/* ==== RESPONSIVE DESIGN V2.0 ==== */
@media (max-width: 992px) {
    .about-container, .contact-content { flex-direction: column; }
    .about-image { margin-bottom: 30px; order: -1; }
    .about-text .section-title { text-align: center; }
    .about-text .section-title::after { margin: 10px auto 0; }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0; right: 0;
        background-color: var(--white-color);
        flex-direction: column;
        width: 280px;
        height: 100vh;
        padding: 80px 30px;
        gap: 25px;
        box-shadow: -5px 0 20px rgba(0,0,0,0.1);
        transform: translateX(100%);
        transition: transform 0.4s ease-in-out;
    }
    .nav-links.active { transform: translateX(0); }
    .burger { display: block; z-index: 1001; }
    .burger.toggle .fa-bars { display: none; }
    /* You would need to add another icon for close, or toggle the bars icon */

    .hero-content h1 { font-size: 2.5rem; }
    .section-title { font-size: 2.2rem; }
    .contact-content { padding: 30px; }
}