/* --- PALETTE DE COULEURS --- */
:root {
    --primary-color: #1976d2;
    --secondary-color: #0d47a1;
    --accent-color: #d84315;
    --body-bg: #ffffff;
    --body-bg-alt: #f8f9fa;
    --text-color-primary: #212529;
    --text-color-secondary: #6c757d;
    --card-bg: #ffffff;
    --border-color: #dee2e6;
    --box-shadow-color: rgba(0, 0, 0, 0.07);
}

/* --- STYLE GÉNÉRAL --- */
html { scroll-behavior: smooth; }
body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--body-bg);
    color: var(--text-color-primary);
    line-height: 1.7;
    transition: background-color 0.3s;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

/* --- EN-TÊTE ET NAVIGATION --- */
header {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    padding: 0.2rem 0;
    border-bottom: 1px solid var(--border-color);
    position: sticky; top: 0; z-index: 1000;
    box-shadow: 0 2px 5px var(--box-shadow-color);
}
.header-container { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 0; display: flex; align-items: center; }
.site-logo { height: 50px; width: auto; vertical-align: middle; }

/* NAVIGATION PRINCIPALE (ORDINATEUR) */
nav { display: flex; align-items: center; }
nav a { text-decoration: none; color: var(--text-color-primary); font-weight: 500; transition: color 0.3s ease; }
nav > .nav-link, nav > .nav-item { margin-left: 1.5rem; }
.nav-link { padding-bottom: 3px; border-bottom: 3px solid transparent; }
.nav-link:hover, nav a.active { color: var(--primary-color); border-bottom-color: var(--primary-color); }
.nav-item { position: relative; }
.nav-item > .nav-link { margin-left: 0; }
.dropdown-content { display: none; position: absolute; background-color: var(--card-bg); min-width: 220px; box-shadow: 0 8px 16px 0 var(--box-shadow-color); z-index: 1001; border-radius: 8px; padding: 0.5rem 0; border: 1px solid var(--border-color); transform: translateY(2px); }
.dropdown-content a { color: var(--text-color-primary); padding: 12px 16px; display: block; text-align: left; border-bottom: none; font-weight: 400; }
.dropdown-content a:hover { background-color: var(--body-bg-alt); color: var(--primary-color); }
.nav-item:hover .dropdown-content { display: block; }

/* CONTROLES DE L'EN-TÊTE */
.header-controls { display: flex; align-items: center; gap: 1rem; }
.language-selector { position: relative; }
.current-lang-display { background-color: var(--primary-color); color: white; border: none; padding: 0.6rem 0.8rem; border-radius: 5px; cursor: pointer; font-weight: 600; display: flex; align-items: center; justify-content: center; transition: background-color 0.2s ease; height: 40px; width: 50px; }
.current-lang-display:hover { background-color: var(--secondary-color); }
.current-lang-display img { width: 100%; height: auto; border-radius: 2px; }
.lang-options { display: none; position: absolute; top: 100%; right: 0; background-color: var(--card-bg); border: 1px solid var(--border-color); border-radius: 5px; box-shadow: 0 4px 10px var(--box-shadow-color); min-width: 150px; z-index: 100; padding: 5px 0; }
.lang-options.show { display: block; }
.lang-options button { display: flex; align-items: center; width: 100%; text-align: left; padding: 0.8rem 1rem; border: none; background: none; cursor: pointer; font-size: 1rem; color: var(--text-color-primary); transition: background-color 0.2s ease, color 0.2s ease; }
.lang-options button:hover { background-color: var(--body-bg-alt); color: var(--primary-color); }
.lang-options button img { width: 20px; height: auto; margin-right: 10px; border-radius: 2px; }

/* --- MENU HAMBURGER --- */
.hamburger-menu {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 2rem;
    height: 2rem;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}
.hamburger-menu .line {
    width: 2rem;
    height: 3px;
    background-color: var(--text-color-primary);
    border-radius: 10px;
    transition: all 0.3s linear;
    position: relative;
    transform-origin: 1px;
}

/* --- CONTENU GÉNÉRAL --- */
.hero { padding: 6rem 0; text-align: center; }
.hero-with-bg { position: relative; background-image: linear-gradient(rgba(25, 118, 210, 0.6), rgba(13, 71, 161, 0.6)), url('assets/images/en-tete.jpg'); background-size: cover; background-position: center; color: white; padding: 8rem 0; }
.hero-with-bg h1 { color: white; }
.hero-with-bg .subtitle { color: rgba(255, 255, 255, 0.9); }
section { padding: 5rem 0; overflow: hidden; }
#hero { padding: 0; }
section:nth-of-type(even) { background-color: var(--body-bg-alt); }
.section-title { text-align: center; font-size: 2.8rem; font-weight: 700; color: var(--text-color-primary); margin-bottom: 1rem; }
.section-subtitle { text-align: center; font-size: 1.1rem; color: var(--text-color-secondary); max-width: 750px; margin: 0 auto 4rem auto; }
.animated { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease-out, transform 0.6s ease-out; }
.animated.visible { opacity: 1; transform: translateY(0); }
.card { background: var(--card-bg); padding: 2.5rem; border-radius: 12px; box-shadow: 0 5px 25px var(--box-shadow-color); height: 100%; box-sizing: border-box; border-top: 4px solid var(--accent-color); }
.two-column-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
.content-image { width: 100%; border-radius: 12px; box-shadow: 0 5px 25px var(--box-shadow-color); }
h3 { font-size: 1.8rem; margin-bottom: 1.5rem; color: var(--primary-color); }
ul { list-style: none; padding: 0; }
ul li { position: relative; padding-left: 35px; margin-bottom: 1.2rem; }
ul li::before { content: '✓'; font-family: 'Arial'; background: var(--secondary-color); color: white; position: absolute; left: 0; top: 0; font-weight: bold; width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.content-image-centered { display: block; max-width: 500px; width: 100%; margin: 2rem auto; border-radius: 8px; box-shadow: 0 5px 25px var(--box-shadow-color); }
.tabs-nav { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 2rem; border-bottom: 1px solid var(--border-color); }
.tab-button { padding: 0.8rem 1.5rem; border: none; background: transparent; cursor: pointer; font-size: 1rem; font-weight: 600; color: var(--text-color-secondary); border-bottom: 3px solid transparent; transition: all 0.3s ease; }
.tab-button.active, .tab-button:hover { color: var(--primary-color); border-bottom-color: var(--primary-color); }
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeIn 0.5s ease; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.slideshow-container { position: relative; overflow: hidden; width: 100%; border-radius: 12px; box-shadow: 0 5px 25px var(--box-shadow-color); }
.slides-wrapper { display: flex; transition: transform 0.5s ease-in-out; }
.slide { flex: 0 0 100%; }
.slide img { width: 100%; height: 100%; display: block; object-fit: cover; }
.prev-slide, .next-slide { position: absolute; top: 50%; transform: translateY(-50%); background-color: rgba(0, 0, 0, 0.4); color: white; border: none; padding: 0.8rem; cursor: pointer; font-size: 1.5rem; z-index: 10; transition: background-color 0.2s ease; border-radius: 50%; width: 50px; height: 50px; display: flex; align-items: center; justify-content: center; }
.prev-slide { left: 10px; }
.next-slide { right: 10px; }
.prev-slide:hover, .next-slide:hover { background-color: rgba(0, 0, 0, 0.7); }
.slide-dots { position: absolute; bottom: 15px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; }
.dot { width: 12px; height: 12px; border-radius: 50%; background-color: rgba(255, 255, 255, 0.5); cursor: pointer; transition: background-color 0.3s ease; }
.dot.active { background-color: var(--primary-color); }
footer { background-color: var(--text-color-primary); color: white; text-align: center; padding: 3rem 1rem; }
.footer-logo-container { display: flex; align-items: center; justify-content: center; gap: 1rem; margin-bottom: 1rem; }
.footer-site-logo { height: 40px; width: auto; }
.footer-logo-text { font-size: 1.8rem; font-weight: 700; color: white; }
.footer-tagline { font-style: italic; color: var(--border-color); margin-top: -0.5rem; margin-bottom: 1.5rem; }
.contact-form { width: 100%; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-bottom: 1.5rem; }
.form-group { display: flex; flex-direction: column; }
.form-label { margin-bottom: 0.5rem; font-weight: 500; color: var(--text-color-primary); }
.form-input, .form-textarea, .form-select { width: 100%; padding: 0.8rem 1rem; font-family: inherit; font-size: 1rem; border: 1px solid var(--border-color); border-radius: 8px; background-color: var(--body-bg-alt); transition: border-color 0.3s ease, box-shadow 0.3s ease; box-sizing: border-box; }
.form-input:focus, .form-textarea:focus, .form-select:focus { outline: none; border-color: var(--primary-color); box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.2); }
.form-textarea { resize: vertical; }
.form-button { background-color: var(--accent-color); color: white; border: none; padding: 1rem 2.5rem; font-size: 1rem; font-weight: 600; border-radius: 8px; cursor: pointer; transition: background-color 0.3s ease, transform 0.2s ease; margin-top: 1rem; }
.form-button:hover { background-color: #a03110; transform: translateY(-2px); }

/* --- RESPONSIVE DESIGN --- */
@media (max-width: 992px) {
    .two-column-layout { grid-template-columns: 1fr; }
    .content-image, .slideshow-container { margin-top: 2rem; }
    .two-column-layout > div:first-child { order: 2; }
    .two-column-layout > .content-image:first-child, .two-column-layout > .slideshow-container:first-child { order: 1; }
}

@media (max-width: 768px) {
    .hamburger-menu { display: flex; }
    
    #main-nav {
        position: fixed;
        top: 0;
        right: 0;
        height: 100vh;
        width: 80%;
        max-width: 300px;
        background-color: var(--card-bg);
        box-shadow: -5px 0 15px rgba(0,0,0,0.1);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 1.5rem; /* CORRECTION APPLIQUÉE ICI */
        transform: translateX(100%);
        transition: transform 0.4s ease-in-out;
        padding: 2rem;
        box-sizing: border-box;
    }
    #main-nav .nav-link, #main-nav .nav-item { margin: 0; }
    #main-nav .nav-item { text-align: center; }
    #main-nav .dropdown-content { position: static; display: block; background: transparent; box-shadow: none; border: none; padding-top: 1rem; }
    #main-nav .dropdown-content a { padding: 0.5rem; }

    body.nav-active { overflow: hidden; }
    body.nav-active #main-nav { transform: translateX(0); }

    body.nav-active .hamburger-menu .line:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
    body.nav-active .hamburger-menu .line:nth-child(2) { opacity: 0; }
    body.nav-active .hamburger-menu .line:nth-child(3) { transform: rotate(-45deg) translate(7px, -7px); }

    body { line-height: 1.6; }
    .section-title { font-size: 2rem; }
    .hero-with-bg h1 { font-size: 2.2rem; line-height: 1.3; }
    h3 { font-size: 1.6rem; }
    .footer-logo-text { font-size: 1.5rem; }
    .container { padding: 0 1.5rem; }
    section { padding: 3.5rem 0; }
    .card { padding: 2rem; }
    .header-container { flex-wrap: nowrap; }
    .header-controls { margin-left: auto; }
    
    .form-grid { grid-template-columns: 1fr; gap: 1.2rem; margin-bottom: 1.2rem; }
    .form-button { padding: 0.9rem 2rem; width: 100%; }
}