/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --blanc: #ffffff;
    --noir-graphite: #1c1c1c;
    --gris-aube: #dde3e9;
    --bleu-outremer: #003366;
    --bleu-outremer-light: #004488;
    --text-primary: #1c1c1c;
    --text-secondary: #333333;
    --font-primary: 'Cascadia Code', 'Consolas', 'Monaco', monospace;
    --font-size-base: 16px;
    --font-size-large: 18px;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --border-radius: 8px;
    --border-light: 1px solid var(--gris-aube);
    --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.05);
    --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.1);
    --navbar-height: 70px;
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--blanc);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* NAVBAR */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--bleu-outremer);
    box-shadow: var(--shadow-light);
    z-index: 1000;
    padding: 0 var(--spacing-lg);
    height: var(--navbar-height);
}
.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}
.logo {
    display: flex;
    align-items: center;
    height: 100%;
}
.logo-img {
    height: 50px;
    width: auto;
    filter: brightness(0) invert(1);
}

/* HAMBURGER MENU (Desktop + Mobile) */
.nav-links {
    display: none;
}

.hamburger {
    display: block;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.hamburger-line {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--blanc);
    margin: 5px 0;
    transition: all 0.3s;
    border-radius: 2px;
}

.hamburger.active .hamburger-line:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger.active .hamburger-line:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

.mobile-nav {
    display: none;
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    right: 0;
    background: var(--bleu-outremer);
    z-index: 1000;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-medium);
}

.mobile-nav.active {
    display: block;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.mobile-nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
}

.mobile-nav-links a {
    color: var(--blanc);
    text-decoration: none;
    font-size: 1.1rem;
    padding: var(--spacing-sm) 0;
    transition: color 0.3s;
}

.mobile-nav-links a:hover {
    color: var(--gris-aube);
}

/* Sélecteur de langue */
.lang-selector {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: 1rem;
}

.lang-link {
    color: var(--blanc);
    text-decoration: none;
    font-weight: 500;
    padding: 0.3rem 0.6rem;
    border-radius: var(--border-radius);
    transition: all 0.3s;
    font-size: 0.9rem;
}

.lang-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.lang-link.active {
    background-color: var(--gris-aube);
    color: var(--bleu-outremer);
}

.lang-selector span {
    color: var(--blanc);
    opacity: 0.7;
}

/* Responsive pour le sélecteur */
@media (max-width: 768px) {
    .lang-selector {
        margin-left: 0.5rem;
    }
    .lang-link {
        font-size: 0.8rem;
        padding: 0.2rem 0.4rem;
    }
}

/* HERO */
.hero {
    position: relative;
    min-height: 100vh;
    padding: calc(var(--navbar-height) + 2rem) 0 var(--spacing-2xl);
    display: flex;
    align-items: center;
}
.hero-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1;
}
.hero .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    text-align: center;
    color: var(--blanc);
    max-width: 100%;
}
.hero-content {
    max-width: 600px;
    margin: 0 auto;
}
.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--blanc);
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.8);
}
.hero-content .subtitle {
    font-size: var(--font-size-large);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
}

/* SECTIONS */
.section {
    padding: var(--spacing-2xl) 0;
    background-color: var(--blanc);
}
.section.bg-light {
    background-color: var(--gris-aube);
}
.section h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--bleu-outremer);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

/* CONTENT GRID */
.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: start;
}
.text-content p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}
.text-content .lead {
    font-size: var(--font-size-large);
    font-weight: 600;
    color: var(--noir-graphite);
}

/* CARD */
.card {
    background-color: var(--blanc);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    border: var(--border-light);
}
.card h3 {
    color: var(--bleu-outremer);
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
}
.checklist {
    list-style: none;
}
.checklist li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    color: var(--text-secondary);
}
.checklist li::before {
    content: "x";
    position: absolute;
    left: 0;
    color: var(--bleu-outremer);
    font-weight: bold;
}

/* PRESTATIONS */
.prestations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}
.prestation-card {
    background-color: var(--blanc);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    border: var(--border-light);
    text-align: center;
    transition: all 0.3s;
}
.prestation-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}
.prestation-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}
.prestation-card h3 {
    color: var(--bleu-outremer);
    margin-bottom: var(--spacing-sm);
    font-size: 1.3rem;
}
.prestation-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* EXPERTISE */
.expertise-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}
.expertise-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    padding: var(--spacing-md);
    background-color: var(--blanc);
    border-radius: var(--border-radius);
    border: var(--border-light);
}
.expertise-icon {
    font-size: 2rem;
    flex-shrink: 0;
}
.expertise-item h4 {
    color: var(--bleu-outremer);
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}
.expertise-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

/* REFERENCES */
.references-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}
.reference-card {
    background-color: var(--blanc);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    border: var(--border-light);
}
.reference-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}
.reference-tag {
    background-color: var(--bleu-outremer);
    color: var(--blanc);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}
.reference-year {
    color: var(--gris-aube);
    font-size: 0.85rem;
    font-weight: 600;
}
.reference-card h3 {
    color: var(--noir-graphite);
    margin-bottom: var(--spacing-sm);
    font-size: 1.3rem;
}
.reference-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-md);
}
.reference-result {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.85rem;
    color: var(--bleu-outremer);
}
.reference-result span::before {
    content: "x";
    margin-right: 0.25rem;
}

/* TOOLS */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}
.tool-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background-color: var(--blanc);
    border-radius: var(--border-radius);
    border: var(--border-light);
}
.tool-name {
    font-weight: 600;
    color: var(--noir-graphite);
}
.tool-category {
    color: var(--bleu-outremer);
    font-size: 0.85rem;
}
.link-external {
    color: var(--bleu-outremer);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    transition: opacity 0.3s;
}
.link-external:hover {
    opacity: 0.7;
}

/* BIBLIOGRAPHIE - VERSION COMPACTE */
.bibliographie-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}
.bibliographie-item {
    background-color: var(--blanc);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    border: var(--border-light);
}
.bibliographie-meta {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: 0.5rem;
    align-items: center;
}
.bibliographie-type {
    background-color: var(--bleu-outremer);
    color: var(--blanc);
    padding: 0.15rem 0.5rem;
    border-radius: 15px;
    font-size: 0.7rem;
    font-weight: 500;
    line-height: 1;
}
.bibliographie-date {
    color: var(--gris-aube);
    font-size: 0.8rem;
    font-weight: 500;
}
.bibliographie-item h3 {
    color: var(--noir-graphite);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    line-height: 1.3;
}
.bibliographie-authors,
.bibliographie-revue,
.bibliographie-description {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}
.bibliographie-links {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}
.bibliographie-item .btn-secondary {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
    margin-right: 0.5rem;
    margin-bottom: 0.25rem;
}

/* CONTACT */
.contact-section {
    background-color: var(--gris-aube);
}
.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}
.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--noir-graphite);
    font-size: 1.1rem;
}
.contact-icon {
    font-size: 1.5rem;
}
.contact-form {
    background-color: var(--blanc);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    border: var(--border-light);
}
.form-group {
    margin-bottom: var(--spacing-lg);
}
.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    color: var(--noir-graphite);
    font-weight: 500;
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--spacing-md);
    border: var(--border-light);
    border-radius: var(--border-radius);
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--noir-graphite);
    background-color: var(--blanc);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #999;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--bleu-outremer);
}
.form-group textarea {
    resize: vertical;
    min-height: 120px;
}
.contact-form .btn-primary {
    width: 100%;
    padding: var(--spacing-md);
}

/* BUTTONS */
.btn-primary {
    display: inline-block;
    background-color: var(--bleu-outremer);
    color: var(--blanc);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}
.btn-primary:hover {
    background-color: var(--bleu-outremer-light);
    transform: translateY(-2px);
}
.btn-secondary {
    display: inline-block;
    background-color: transparent;
    color: var(--bleu-outremer);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    border: 2px solid var(--bleu-outremer);
    transition: all 0.3s;
}
.btn-secondary:hover {
    background-color: var(--bleu-outremer);
    color: var(--blanc);
}

/* FOOTER */
.footer {
    background-color: var(--noir-graphite);
    color: var(--blanc);
    padding: var(--spacing-md) 0 var(--spacing-md);
}
.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-logo img {
    height: 50px;
    width: auto;
}
.footer-links {
    display: flex;
    gap: var(--spacing-xl);
}
.footer-links a {
    color: var(--blanc);
    text-decoration: none;
    transition: opacity 0.3s;
}
.footer-links a:hover {
    opacity: 0.7;
}
.footer-bottom {
    text-align: center;
}
.footer-bottom p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}
.footer-bottom a {
    color: var(--blanc);
    text-decoration: none;
}
.footer-bottom a:hover {
    opacity: 0.7;
}

/* IMAGES DANS LES RÉFÉRENCES */
.reference-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
    transition: transform 0.3s ease;
}

.reference-image:hover {
    transform: scale(1.10);
}

/* DESCRIPTION ET ACTEURS */
.reference-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
    line-height: 1.5;
}

.reference-acteurs {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: var(--spacing-sm);
    font-style: italic;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
    .hero-content {
        max-width: 90%;
    }
    .hero-content h1 {
        font-size: 2.5rem;
    }
    .content-grid {
        grid-template-columns: 1fr;
    }
}
@media (max-width: 768px) {
    .section h2 {
        font-size: 2rem;
    }
    .prestations-grid,
    .references-grid,
    .expertise-grid,
    .tools-grid {
        grid-template-columns: 1fr;
    }
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    .footer-links {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    .contact-form {
        padding: var(--spacing-lg);
    }
    .hero-content h1 {
        font-size: 2rem;
    }
}
@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.8rem;
    }
    .section {
        padding: var(--spacing-xl) 0;
    }
    .container {
        padding: 0 var(--spacing-md);
    }
    .btn-primary {
        padding: var(--spacing-md);
        width: 100%;
    }
    .form-group input,
    .form-group textarea,
    .form-group select {
        font-size: 0.9rem;
    }
    .logo-img {
        height: 40px;
    }
}
.mt-1 {
    margin-top: var(--spacing-md);
}