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

:root {
    --primary-blue: #004080;
    --primary-light-blue: #0066cc;
    --primary-yellow: #ffd633;
    --primary-light-yellow: #ffe066;
    --orange: #e67e22;
    --green: #27ae60;
    --red: #e74c3c;
    --dark-gray: #1a2a3a;
    --medium-gray: #4a5b6e;
    --light-gray: #f0f4f8;
    --white: #ffffff;
    --shadow: 0 12px 48px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 24px 64px rgba(0, 0, 0, 0.10);
    --radius: 16px;
    --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1140px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Open Sans', sans-serif;
    background: var(--light-gray);
    color: var(--dark-gray);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 30px;
}

/* ============================================
   LANGUAGE TOGGLE
   ============================================ */
.lang-toggle {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    padding: 6px 30px;
    background: var(--white);
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.lang-btn {
    background: transparent;
    border: 1.5px solid #e0e6ed;
    padding: 5px 18px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.78rem;
    color: #5a6b7e;
    cursor: pointer;
    transition: var(--transition);
}

.lang-btn.active {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
    color: var(--white);
}

.lang-btn i {
    margin-right: 5px;
}

.lang-btn:hover:not(.active) {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

/* ============================================
   HEADER
   ============================================ */
.main-header {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-light-blue) 100%);
    color: var(--white);
    padding: 24px 0;
    position: relative;
    overflow: hidden;
}

.main-header::after {
    content: '';
    position: absolute;
    top: -40%;
    right: -10%;
    width: 55%;
    height: 180%;
    background: rgba(255, 255, 255, 0.03);
    transform: rotate(18deg);
    pointer-events: none;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    position: relative;
    z-index: 1;
}

.header-logo {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    border: 3px solid rgba(255, 255, 255, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    color: var(--white);
}

.header-text h1 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
    font-size: 2rem;
    letter-spacing: -0.5px;
}

.header-text p {
    font-weight: 300;
    font-size: 0.95rem;
    opacity: 0.85;
    margin-top: 2px;
}

/* ============================================
   NAVIGATION
   ============================================ */
.main-nav {
    background: var(--white);
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
    position: sticky;
    top: 44px;
    z-index: 999;
    padding: 0 30px;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 60px;
}

.nav-brand {
    font-weight: 700;
    color: var(--primary-blue);
    font-size: 1.05rem;
    text-decoration: none;
}

.nav-brand:hover {
    color: var(--primary-light-blue);
}

.nav-brand i {
    margin-right: 8px;
}

.nav-links {
    display: flex;
    gap: 28px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--medium-gray);
    font-weight: 500;
    font-size: 0.88rem;
    padding: 6px 0;
    border-bottom: 2.5px solid transparent;
    transition: var(--transition);
}

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

.nav-links a i {
    margin-right: 6px;
}

/* ============================================
   HERO
   ============================================ */
.hero {
    padding: 60px 0 50px;
    background: linear-gradient(135deg, #f0f4fa 0%, var(--light-gray) 100%);
    text-align: center;
}

.hero h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 2.6rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.hero h2 .highlight {
    color: var(--primary-blue);
    position: relative;
}

.hero h2 .highlight::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 0;
    right: 0;
    height: 8px;
    background: rgba(0, 64, 128, 0.10);
    border-radius: 4px;
}

.hero p {
    color: var(--medium-gray);
    font-size: 1.05rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   FEATURES
   ============================================ */
.features-section {
    padding: 50px 0 60px;
    background: var(--white);
}

.features-header {
    text-align: center;
    margin-bottom: 44px;
}

.features-tag {
    display: inline-block;
    background: var(--primary-blue);
    color: var(--white);
    padding: 4px 20px;
    border-radius: 30px;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.features-header h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--dark-gray);
    margin-bottom: 10px;
}

.features-header p {
    color: var(--medium-gray);
    font-size: 1.02rem;
    max-width: 720px;
    margin: 0 auto;
    line-height: 1.8;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin: 30px 0 40px;
}

.feature-card {
    background: var(--light-gray);
    border-radius: var(--radius);
    padding: 28px 24px;
    text-align: center;
    transition: var(--transition);
    border-bottom: 4px solid transparent;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-bottom-color: var(--primary-yellow);
}

.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: rgba(0, 64, 128, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px;
    font-size: 1.6rem;
    color: var(--primary-blue);
}

.feature-card h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.05rem;
    margin-bottom: 6px;
    color: var(--dark-gray);
}

.feature-card p {
    color: var(--medium-gray);
    font-size: 0.9rem;
    line-height: 1.6;
}

.features-cta {
    background: var(--primary-blue);
    border-radius: var(--radius);
    padding: 40px 45px;
    color: var(--white);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.features-audience h4 {
    color: var(--white);
    font-family: 'Montserrat', sans-serif;
    font-size: 1.1rem;
    margin-bottom: 12px;
}

.features-audience ul {
    list-style: none;
}

.features-audience li {
    padding: 4px 0;
    font-size: 0.92rem;
    opacity: 0.9;
}

.features-cta-text {
    text-align: center;
}

.features-cta-text p {
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 18px;
}

.btn-features {
    display: inline-block;
    background: var(--primary-yellow);
    color: var(--primary-blue);
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
    transition: var(--transition);
}

.btn-features:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(255, 214, 51, 0.30);
}

/* ============================================
   COURS SECTION
   ============================================ */
.cours-section {
    padding: 60px 0;
}

.cours-section.alt {
    background: var(--white);
}

.cours-header {
    margin-bottom: 30px;
    position: relative;
}

.cours-badge {
    display: inline-block;
    padding: 3px 16px;
    border-radius: 30px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--white);
    margin-right: 8px;
}

.cours-badge.debutant {
    background: #3498db;
}

.cours-badge.intermediaire {
    background: var(--orange);
}

.cours-badge.avance {
    background: var(--red);
}

.cours-badge.populaire {
    background: var(--primary-yellow);
    color: var(--primary-blue);
}

.cours-header h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.8rem;
    color: var(--dark-gray);
    margin-top: 10px;
}

.cours-price {
    font-family: 'Montserrat', sans-serif;
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--primary-blue);
    margin-top: 4px;
}

.cours-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 40px;
}

.cours-info h3,
.cours-programme h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.1rem;
    color: var(--primary-blue);
    margin-bottom: 12px;
}

.cours-info p {
    color: var(--medium-gray);
    font-size: 0.95rem;
    margin-bottom: 14px;
}

.audience-list {
    list-style: none;
    margin-bottom: 18px;
}

.audience-list li {
    padding: 5px 0;
    font-size: 0.92rem;
    color: var(--dark-gray);
    display: flex;
    align-items: center;
    gap: 10px;
}

.audience-list li i {
    color: var(--green);
}

.cours-details {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    padding-top: 14px;
    border-top: 1px solid #e0e6ed;
}

.cours-details span {
    font-size: 0.9rem;
    color: var(--medium-gray);
}

.cours-details i {
    color: var(--primary-blue);
    width: 18px;
}

.programme-list {
    list-style: none;
}

.programme-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
    border-bottom: 1px solid #f0f4f8;
}

.programme-list li:last-child {
    border-bottom: none;
}

.module-number {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 0.7rem;
    color: var(--primary-blue);
    background: rgba(0, 64, 128, 0.08);
    padding: 2px 10px;
    border-radius: 20px;
    min-width: 28px;
    text-align: center;
}

.programme-list li span:last-child {
    font-size: 0.92rem;
    color: var(--dark-gray);
}

.cours-actions {
    display: flex;
    gap: 16px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.92rem;
    text-decoration: none;
    transition: var(--transition);
}

.btn-primary {
    background: var(--primary-blue);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--primary-light-blue);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 64, 128, 0.20);
}

.btn-outline {
    background: transparent;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

.btn-outline:hover {
    background: var(--primary-blue);
    color: var(--white);
    transform: translateY(-3px);
}

.btn-small {
    padding: 8px 20px;
    font-size: 0.82rem;
    background: var(--primary-blue);
    color: var(--white);
}

.btn-small:hover {
    background: var(--primary-light-blue);
}

/* ============================================
   COMPARAISON
   ============================================ */
.comparaison-section {
    padding: 60px 0;
    background: var(--white);
}

.comparaison-section h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 2rem;
    text-align: center;
    margin-bottom: 40px;
}

.comparaison-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.comparaison-card {
    background: var(--light-gray);
    border-radius: var(--radius);
    padding: 30px 24px;
    text-align: center;
    transition: var(--transition);
}

.comparaison-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

.comparaison-card.featured {
    border: 2px solid var(--primary-yellow);
}

.comparaison-card h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.2rem;
    margin-bottom: 4px;
}

.comp-price {
    font-family: 'Montserrat', sans-serif;
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-blue);
    margin-bottom: 12px;
}

.comparaison-card ul {
    list-style: none;
    margin-bottom: 16px;
}

.comparaison-card li {
    padding: 4px 0;
    font-size: 0.9rem;
    color: var(--medium-gray);
}

/* ============================================
   FOOTER
   ============================================ */
.main-footer {
    background: #0a1628;
    color: #c8d6e5;
    padding: 44px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 44px;
}

.footer-col h4 {
    color: var(--white);
    font-family: 'Montserrat', sans-serif;
    font-size: 0.98rem;
    margin-bottom: 14px;
}

.footer-col p,
.footer-col a {
    color: #9aadc8;
    font-size: 0.9rem;
    text-decoration: none;
    display: block;
    margin-bottom: 6px;
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--white);
}

.footer-col i {
    width: 22px;
    color: var(--primary-yellow);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 6px;
}

.contact-item i {
    width: 22px;
    color: var(--primary-yellow);
}

.contact-item a {
    display: inline;
    color: #9aadc8;
}

.contact-item a:hover {
    color: var(--white);
}

.footer-bottom {
    border-top: 1px solid #1a2a40;
    margin-top: 28px;
    padding-top: 18px;
    text-align: center;
    font-size: 0.82rem;
    color: #6a7f9a;
}

.footer-bottom .sep {
    margin: 0 12px;
    color: #2a3a50;
}

/* ============================================
   MODAL
   ============================================ */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(6px);
    z-index: 9999;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--white);
    border-radius: var(--radius);
    max-width: 460px;
    width: 92%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from { opacity: 0; transform: translateY(30px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 28px;
    border-bottom: 1px solid #e8edf5;
}

.modal-header h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.2rem;
    color: var(--dark-gray);
}

.close-modal {
    background: none;
    border: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--medium-gray);
    transition: var(--transition);
    line-height: 1;
}

.close-modal:hover {
    color: var(--dark-gray);
}

.modal-body {
    padding: 28px;
    text-align: center;
}

.modal-body p {
    color: var(--medium-gray);
    margin-bottom: 20px;
}

.modal-contact {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.modal-contact-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 0.95rem;
}

.modal-contact-item i {
    color: var(--primary-blue);
    width: 24px;
}

.modal-contact-item a {
    color: var(--primary-blue);
    text-decoration: none;
}

.modal-actions {
    display: flex;
    justify-content: center;
}

.btn-secondary {
    background: var(--light-gray);
    color: var(--dark-gray);
    padding: 10px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-secondary:hover {
    background: #e0e6ed;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .features-cta {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .comparaison-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .cours-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .hero h2 {
        font-size: 2rem;
    }
    .nav-links {
        gap: 16px;
    }
    .nav-links a {
        font-size: 0.8rem;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    .lang-toggle {
        padding: 6px 20px;
    }
    .main-nav {
        top: 38px;
        padding: 0 20px;
    }
    .nav-container {
        flex-direction: column;
        gap: 6px;
    }
    .nav-links {
        gap: 12px;
        flex-wrap: wrap;
        justify-content: center;
    }
    .header-content {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    .header-text h1 {
        font-size: 1.5rem;
    }
    .features-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
    .features-header h2 {
        font-size: 1.6rem;
    }
    .features-cta {
        padding: 28px 20px;
    }
    .cours-header h2 {
        font-size: 1.4rem;
    }
    .cours-price {
        font-size: 1.8rem;
    }
    .comparaison-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .footer-bottom .sep {
        display: none;
    }
    .hero h2 {
        font-size: 1.6rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    .lang-btn {
        font-size: 0.68rem;
        padding: 4px 12px;
    }
    .header-text h1 {
        font-size: 1.2rem;
    }
    .hero h2 {
        font-size: 1.3rem;
    }
    .hero p {
        font-size: 0.9rem;
    }
    .features-header h2 {
        font-size: 1.4rem;
    }
    .feature-card {
        padding: 20px 16px;
    }
    .cours-header h2 {
        font-size: 1.2rem;
    }
    .cours-price {
        font-size: 1.5rem;
    }
    .cours-details {
        gap: 12px;
    }
    .btn {
        padding: 10px 20px;
        font-size: 0.85rem;
    }
    .modal-content {
        padding: 20px 16px;
    }
}