:root {
    --color-primary: #8B7355; /* Marron élégant */
    --color-secondary: #F5F5DC; /* Beige clair */
    --color-accent: #FFE5B4; /* Jaune pastel */
    --color-text: #4A4A4A;
    --color-background: #FFFFFF;
    --transition-speed: 0.3s;
}

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

body {
    font-family: 'Poppins', sans-serif;
    color: var(--color-text);
    line-height: 1.6;
    overflow-y: scroll; /* Force la barre de défilement pour éviter les sauts */
    opacity: 1;
    transition: opacity 0.3s ease-in-out;
}

/* Header & Navigation */

.main-header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
    height: 80px; /* Hauteur fixe pour éviter les sauts */
    contain: layout; /* Optimisation des performances */
    transform: translateZ(0); /* Force l'accélération matérielle */
    will-change: transform; /* Optimisation des animations */
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.5rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%; /* Utilise toute la hauteur du header */
}

.logo {
    padding: 0.25rem;
    flex: 0 0 auto;
}

.logo img {
    height: 60px;
    width: auto;
    display: block;
}

.nav-container {
    display: flex;
    align-items: center;
    flex: 1;
    justify-content: center;
}

.nav-links {
    display: flex;
    gap: 1.25rem;
    justify-content: center;
}

.nav-links a {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    padding: 0.35rem 0.75rem;
    border-radius: 18px;
    transition: all 0.3s ease;
    white-space: nowrap;
}

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

.ketis-text {
    font-size: 1.15em;
    font-weight: 600;
}

@media (max-width: 768px) {
    .logo img {
        height: 50px;
    }
    
    .nav-links {
        gap: 0.5rem;
    }
    
    .nav-links a {
        padding: 0.25rem 0.6rem;
        font-size: 0.9rem;
    }
    
    .ketis-text {
        font-size: 1.1em;
    }
}

/* Hero Section */
.hero {
    min-height: 60vh;
    background: url('../images/Image ketis/deco ketis.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    padding: 4rem 2rem;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 2;
}

/* Overlay léger pour la lisibilité */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.13); /* Overlay à 13% d'opacité */
    z-index: 1;
}

.hero h1 {
    font-size: 3rem;
    color: white;
    margin-bottom: -0.5rem; /* Marge négative pour remonter le sous-titre */
    animation: fadeInUp 1s ease-out;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    color: white;
    animation: fadeInUp 1s ease-out 0.2s backwards;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.2);
}

.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: var(--color-primary);
    color: white;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    animation: fadeInUp 1s ease-out 0.4s backwards;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* Features Section */
.features {
    padding: 4rem 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--color-background);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: transform var(--transition-speed);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card img {
    width: 60px;
    height: 60px;
    margin-bottom: 1rem;
}

.feature-card h3 {
    color: var(--color-primary);
    margin-bottom: 1rem;
}

/* Section Actualités */
.news-section {
    padding: 8rem 2rem 4rem;
    background-color: var(--color-background);
}

.news-section h1 {
    text-align: center;
    color: var(--color-primary);
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.news-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: transform var(--transition-speed);
}

.news-card:hover {
    transform: translateY(-5px);
}

.news-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-speed);
}

.news-card:hover .news-image img {
    transform: scale(1.05);
}

.news-content {
    padding: 1.5rem;
}

.news-date {
    color: var(--color-text-light);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.news-content h2 {
    color: var(--color-primary);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.news-content p {
    margin-bottom: 1.5rem;
}

.news-link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-speed);
}

.news-link:hover {
    color: var(--color-accent);
}

.newsletter-signup {
    text-align: center;
    padding: 3rem;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
    border-radius: 15px;
    margin-top: 4rem;
}

.newsletter-signup h2 {
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.newsletter-signup p {
    margin-bottom: 2rem;
}

.newsletter-form {
    display: flex;
    gap: 1rem;
    align-items: center;  /* Pour aligner verticalement les éléments */
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-form input[type="email"] {
    flex: 1;
    padding: 0.5rem 1.2rem;
    border: 1px solid var(--color-primary);  /* Utilisation de la couleur primaire pour la cohérence */
    border-radius: 25px;
    font-size: 1rem;
    background: white;
    color: var(--color-text);
    height: 2.5rem;  /* Hauteur fixe qui correspond au bouton */
}

.newsletter-form input:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--color-primary);
}

.learn-more {
    padding: 0.5rem 1.2rem;  /* Même padding que l'input */
    background-color: var(--color-primary);
    color: white;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    height: 2.5rem;         /* Même hauteur que l'input */
    margin: 0;             /* Suppression de la marge */
}

.learn-more:hover {
    background-color: #6d5842;
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .news-grid {
        grid-template-columns: 1fr;
    }

    .newsletter-form {
        flex-direction: column;
    }

    .newsletter-form input,
    .newsletter-form button {
        width: 100%;
    }
}

[data-theme="dark"] .news-card {
    background: var(--color-secondary);
}

[data-theme="dark"] .news-content h2 {
    color: var(--color-text);
}

/* Page À propos */
.about-hero {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: white;
    text-align: center;
    padding: 8rem 2rem 4rem;
}

.about-hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.about-subtitle {
    font-size: 1.5rem;
    opacity: 0.9;
}

.about-intro {
    padding: 4rem 2rem;
    background-color: var(--color-background);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h2 {
    color: var(--color-primary);
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.values-section {
    padding: 4rem 2rem;
    background-color: white;
}

.values-section h2 {
    text-align: center;
    color: var(--color-primary);
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.value-card {
    text-align: center;
    padding: 2rem;
    background: var(--color-background);
    border-radius: 15px;
    transition: transform var(--transition-speed);
}

.value-card:hover {
    transform: translateY(-5px);
}

.value-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.value-card h3 {
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.team-section {
    padding: 4rem 2rem;
    background-color: var(--color-background);
}

.team-section h2 {
    text-align: center;
    color: var(--color-primary);
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.team-member {
    text-align: center;
}

.member-image {
    width: 200px;
    height: 200px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    overflow: hidden;
}

.member-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team-member h3 {
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.team-member p {
    color: var(--color-text-light);
}

.contact-section {
    padding: 6rem 2rem;
    min-height: 500px;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
}

.contact-section h2 {
    text-align: center;
    color: var(--color-primary);
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    background-color: var(--color-accent);
    padding: 1rem;
    border-radius: 15px;
    margin-bottom: 1rem;
}

.contact-item {
    margin-bottom: 1rem;
}

.contact-item h3 {
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 15px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
}

.form-group textarea {
    height: 150px;
    resize: vertical;
}

@media (max-width: 768px) {
    .about-grid,
    .contact-content {
        grid-template-columns: 1fr;
    }

    .about-hero h1 {
        font-size: 2.5rem;
    }

    .member-image {
        width: 150px;
        height: 150px;
    }
}

[data-theme="dark"] .about-text h2,
[data-theme="dark"] .value-card h3,
[data-theme="dark"] .team-member h3 {
    color: var(--color-text);
}

[data-theme="dark"] .value-card,
[data-theme="dark"] .contact-form,
[data-theme="dark"] .contact-info {
    background: var(--color-secondary);
}

/* Navigation links - Dark theme */
[data-theme="dark"] .nav-links a {
    color: var(--color-text);
}

[data-theme="dark"] .nav-links a:hover,
[data-theme="dark"] .nav-links a.active {
    background-color: var(--color-accent);
    color: var(--color-text);
}

/* Footer */
footer {
    background-color: var(--color-primary);
    color: white;
    padding: 4rem 2rem 1rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
}

.footer-section a {
    color: white;
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
    transition: opacity var(--transition-speed);
}

.footer-section a:hover {
    opacity: 0.8;
}

.footer-bottom {
    text-align: center;
    margin-top: 3rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Transitions de page */
body.page-transition {
    opacity: 0;
}

/* Éviter le tremblement pendant le chargement */
body:not(.content-loaded) {
    visibility: hidden;
}

body.content-loaded {
    visibility: visible;
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Mobile Menu Button */
.mobile-menu-btn {
    margin-left: auto; 
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--color-primary);
    margin: 5px 0;
    transition: all 0.3s ease;
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }

    .nav-links {
        display: none;
    }

    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: white;
        padding: 1rem;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    }
}

/* Bouton de changement de thème */
.theme-toggle {
    background: var(--color-accent);
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    gap: 0.5rem;
    border-radius: 20px;
    transition: background-color 0.3s;
}

.theme-toggle span {
    padding: 0.25rem;
    border-radius: 50%;
    transition: background-color 0.3s;
}

/* Light theme */
:root[data-theme="light"] .theme-toggle-light {
    background-color: var(--color-primary);
    color: white;
}

/* Dark theme */
:root[data-theme="dark"] .theme-toggle-dark {
    background-color: var(--color-primary);
    color: white;
}

/* Thème sombre */
[data-theme="dark"] {
    --color-primary: #8B7355;
    --color-secondary: #2C2C2C;
    --color-accent: #3A3A3A;
    --color-text: #E8E8E8;
    --color-background: #252525;
}

[data-theme="dark"] body {
    background: linear-gradient(135deg, #2A2A2A, #323232);
    color: #E8E8E8;
}

[data-theme="dark"] .main-header {
    background: #252525;
}

[data-theme="dark"] .nav-links a {
    color: #8B7355;
}

[data-theme="dark"] .nav-links a:hover {
    color: var(--color-primary);
}

[data-theme="dark"] .feature-card {
    background: #2C2C2C;
    color: #E8E8E8;
}

[data-theme="dark"] .cta-button {
    color: #E8E8E8;
}

[data-theme="dark"] footer {
    background: #252525;
    color: #E8E8E8;
}

/* Language Selector */
.language-selector {
    margin-left: 1rem;
    position: relative;
}

.language-select {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.language-select-display {
    background-color: var(--color-accent);
    border: none;
    cursor: pointer;
    padding: 0.5rem 2rem 0.5rem 2.5rem;
    border-radius: 20px;
    font-weight: 500;
    transition: all 0.3s ease;
    background-repeat: no-repeat;
    background-position: 0.7rem center, right 0.7rem center;
    background-size: 1.2em, 0.8em;
    font-size: 1rem;
    background-image: url('../images/flags/france.png'), url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
}

.custom-select-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-accent);
    border-radius: 10px;
    margin-top: 0.5rem;
    overflow: hidden;
    display: none;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.custom-select-dropdown.show {
    display: block;
}

.custom-select-option {
    padding: 0.5rem 0.5rem 0.5rem 2.5rem;
    cursor: pointer;
    background-repeat: no-repeat;
    background-position: 0.7rem center;
    background-size: 1.2em;
    transition: background-color 0.2s;
}

.custom-select-option:hover {
    background-color: var(--color-primary);
}

.custom-select-option[data-value="fr"] {
    background-image: url('../images/flags/france.png');
}

.custom-select-option[data-value="en"] {
    background-image: url('../images/flags/Royaule_unies.png');
}

.custom-select-option[data-value="de"] {
    background-image: url('../images/flags/Allemagne.png');
}

.custom-select-option[data-value="es"] {
    background-image: url('../images/flags/espagne.png');
}

.custom-select-option[data-value="it"] {
    background-image: url('../images/flags/italie.png');
}

.custom-select-option[data-value="pt"] {
    background-image: url('../images/flags/portugal.png');
}

.custom-select-option[data-value="el"] {
    background-image: url('../images/flags/grece.png');
}

.custom-select-option[data-value="ru"] {
    background-image: url('../images/flags/Russie.png');
}

.custom-select-option[data-value="zh"] {
    background-image: url('../images/flags/chine.png');
}

.custom-select-option[data-value="ja"] {
    background-image: url('../images/flags/Japon.png');
}

.custom-select-option[data-value="hi"] {
    background-image: url('../images/flags/Inde.png');
}

.custom-select-option[data-value="ar"] {
    background-image: url('../images/flags/Arabie_Saoudite.png');
}

.language-select-display:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--color-primary);
}

[data-theme="dark"] .language-select-display {
    color: var(--color-text);
}