/* ========================================
   HEADER & NAVIGATION
   ======================================== */

.header {
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: var(--z-fixed);
    box-shadow: var(--shadow-sm);
}

.header-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    flex-shrink: 0;
}

.logo-img {
    height: 52px;
    width: auto;
    display: block;
    transition: opacity var(--transition-fast);
}

.logo:hover .logo-img {
    opacity: 0.85;
}

@media (max-width: 768px) {
    .logo-img {
        height: 42px;
    }
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-list {
    list-style: none;
    display: flex;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-link {
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-fast);
}

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

.nav-link.active {
    color: var(--color-primary);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--color-text);
    margin: 4px 0;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav {
        gap: var(--spacing-md);
    }

    .nav-list {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-white);
        padding: var(--spacing-lg);
        border-bottom: 1px solid var(--color-border);
        gap: var(--spacing-md);
        z-index: var(--z-dropdown);
    }

    .nav-list.active {
        display: flex;
    }

    .nav-link {
        display: block;
    }

    .nav-link::after {
        display: none;
    }
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
    background: linear-gradient(135deg, var(--color-secondary) 0%, #2c2e34 100%);
    color: var(--color-white);
    padding-top: var(--spacing-4xl);
    padding-bottom: var(--spacing-3xl);
    margin-top: var(--spacing-4xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-3xl);
}

.footer-section h3 {
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-md);
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

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

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--color-primary);
}

.footer-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    margin: var(--spacing-2xl) 0;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

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

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
    position: relative;
    height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(230, 0, 126, 0.95) 0%, rgba(192, 0, 105, 0.95) 100%);
    z-index: 1;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: cover;
    background-position: center;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--color-white);
}

.hero-title {
    font-size: var(--font-size-5xl);
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-2xl);
    opacity: 0.95;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .hero {
        height: 400px;
    }

    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-base);
    }

    .hero-buttons {
        flex-direction: column;
    }
}

/* ========================================
   ANIMATIONS
   ======================================== */

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

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.animate-fade-in {
    animation: fadeIn 0.8s ease-out;
}

.animate-slide-in-left {
    animation: slideInLeft 0.8s ease-out;
}

.animate-slide-in-right {
    animation: slideInRight 0.8s ease-out;
}

/* ========================================
   SCROLL ANIMATIONS
   ======================================== */

/* Masqué uniquement si JS + IntersectionObserver disponibles (voir header).
   Sans JS, le contenu reste visible — pas de sections vides. */
.js /* Le contenu est visible par défaut ; il n'est masqué pour l'animation
   que si JavaScript est actif (classe .js ajoutée sur <html>). Ainsi, si le
   JS échoue ou est désactivé, rien n'est jamais caché. */
.js .fade-in-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.js .fade-in-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    .js .fade-in-on-scroll {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* ========================================
   DIVERS
   ======================================== */

.badge {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
}

.badge--primary {
    background: rgba(230, 0, 126, 0.1);
    color: var(--color-primary);
}

.badge--success {
    background: rgba(39, 174, 96, 0.1);
    color: var(--color-success);
}

.divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--spacing-3xl) 0;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}