/* Design System & Variables */
:root {
    /* Premium Black & White Palette */
    --color-bg-primary: #0a0a0a;
    --color-bg-secondary: #141414;
    --color-bg-card: #1c1c1c;
    --color-text-primary: #ffffff;
    --color-text-secondary: #a0a0a0;
    --color-accent: #ffffff;
    --color-border: rgba(255, 255, 255, 0.1);
    --color-hover: rgba(255, 255, 255, 0.05);
    
    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Transitions & Shadows */
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --shadow-glow: 0 0 40px rgba(255, 255, 255, 0.1);
    --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.5);
    
    /* Spacing */
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 4rem;
    --space-xxl: 6rem;
}

/* Light Theme Overrides */
body.light-theme {
    --color-bg-primary: #f8fafc;
    --color-bg-secondary: #ffffff;
    --color-bg-card: #ffffff;
    --color-text-primary: #0f172a;
    --color-text-secondary: #64748b;
    --color-accent: #0f172a; /* Boutons noirs sur fond clair */
    --color-border: #e2e8f0;
    --color-hover: #f1f5f9;
    --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.05);
}

body.light-theme .btn-primary {
    color: #ffffff;
}

body.light-theme .navbar {
    background: rgba(255, 255, 255, 0.9);
}

body.light-theme input, 
body.light-theme select, 
body.light-theme textarea {
    background-color: #ffffff;
    border-color: #cbd5e1;
    color: #0f172a;
}

/* Reset & Global */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
}

a {
    color: var(--color-text-primary);
    text-decoration: none;
    transition: var(--transition-smooth);
}

/* Global Form Elements */
input, select, textarea {
    color: var(--color-text-primary);
    font-family: inherit;
}

select option {
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    font-family: var(--font-heading);
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-bg-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(255, 255, 255, 0.2);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background-color: var(--color-hover);
    border-color: var(--color-text-primary);
}

.btn-sm {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
    transition: var(--transition-smooth);
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.logo img {
    height: 40px;
    width: 40px;
    border-radius: 8px;
    object-fit: cover;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0%;
    height: 2px;
    background-color: var(--color-accent);
    transition: var(--transition-smooth);
}

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

.admin-link {
    color: var(--color-text-secondary) !important;
    font-size: 0.85rem !important;
}

.nav-actions {
    display: flex;
    gap: 1rem;
}

.icon-btn, .mobile-menu-btn {
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    background-color: var(--color-hover);
}

.mobile-menu-btn {
    display: none;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 0 var(--space-lg);
    padding-top: 80px;
    max-width: 1400px;
    margin: 0 auto;
    gap: var(--space-xl);
}

.hero-content {
    flex: 1;
    z-index: 2;
}

.hero-title {
    font-size: clamp(3rem, 5vw, 5rem);
    margin-bottom: var(--space-md);
    letter-spacing: -1px;
}

.hero-title span {
    display: block;
    color: var(--color-text-secondary);
    font-weight: 300;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.hero-image-wrapper {
    flex: 1;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-img {
    width: 100%;
    max-width: 600px;
    border-radius: 20px;
    z-index: 2;
    transform: perspective(1000px) rotateY(-5deg);
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-card);
}

.hero-image-wrapper:hover .hero-img {
    transform: perspective(1000px) rotateY(0deg) translateY(-10px);
}

.glow-effect {
    position: absolute;
    width: 80%;
    height: 80%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, rgba(0,0,0,0) 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
    filter: blur(40px);
}

/* Features Section */
.features {
    padding: var(--space-xxl) var(--space-lg);
    background-color: var(--color-bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: var(--space-sm);
}

.section-header p {
    color: var(--color-text-secondary);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--color-bg-card);
    padding: var(--space-xl) var(--space-lg);
    border-radius: 24px;
    text-align: center;
    border: 1px solid var(--color-border);
    transition: var(--transition-smooth);
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: var(--shadow-glow);
}

.icon-wrapper {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
    color: var(--color-text-primary);
}

.feature-card h3 {
    margin-bottom: var(--space-sm);
    font-size: 1.5rem;
}

.feature-card p {
    color: var(--color-text-secondary);
}

/* Products Section */
.products {
    padding: var(--space-xxl) var(--space-lg);
    max-width: 1400px;
    margin: 0 auto;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-xl);
}

.product-card {
    background: var(--color-bg-secondary);
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.6);
    border-color: rgba(255,255,255,0.2);
}

.product-img-container {
    position: relative;
    height: 350px;
    background: var(--color-bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
}

.product-img-container img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: var(--transition-smooth);
}

.product-card:hover .product-img-container img {
    transform: scale(1.05);
}

.badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--color-text-primary);
    color: var(--color-bg-primary);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
}

.product-info {
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    flex: 1;
}

.product-title {
    font-size: 1.4rem;
    margin-bottom: var(--space-sm);
}

.product-desc {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    font-size: 0.95rem;
    flex: 1;
}

.product-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
}

.price {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-heading);
}

/* Footer */
.footer {
    background-color: var(--color-bg-secondary);
    padding: var(--space-xxl) var(--space-lg) var(--space-md);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-brand p {
    color: var(--color-text-secondary);
    margin: var(--space-md) 0;
    max-width: 300px;
}

.socials {
    display: flex;
    gap: 1rem;
}

.socials a {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
}

.socials a:hover {
    color: var(--color-text-primary);
}

.footer-links h4 {
    margin-bottom: var(--space-md);
    font-size: 1.1rem;
}

.footer-links a {
    display: block;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.footer-links a:hover {
    color: var(--color-text-primary);
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
}

/* UI Mobile Injection */
.mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.mobile-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

/* Sidebar */
.mobile-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 80%;
    max-width: 350px;
    height: 100%;
    background: var(--color-bg-secondary);
    z-index: 1001;
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 2px 0 10px rgba(0,0,0,0.2);
    display: flex;
    flex-direction: column;
}
.mobile-sidebar.active {
    transform: translateX(0);
}
.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--color-border);
}
.sidebar-content {
    padding: 20px;
    flex: 1;
    overflow-y: auto;
}
.sidebar-link {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 0;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-text-primary);
    border-bottom: 1px solid var(--color-border);
    text-decoration: none;
}
.sidebar-link i {
    width: 20px;
    text-align: center;
}
.sidebar-link:last-child {
    border-bottom: none;
}

/* Cart Modal */
.cart-modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -40%);
    width: 90%;
    max-width: 400px;
    background: var(--color-bg-secondary);
    z-index: 1002;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}
.cart-modal.active {
    opacity: 1;
    pointer-events: auto;
    transform: translate(-50%, -50%);
}
.cart-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--color-border);
}
.cart-modal-content {
    padding: 20px;
    text-align: center;
    color: var(--color-text-secondary);
}
.cart-modal-footer {
    padding: 20px;
    background: var(--color-bg-primary);
    border-radius: 0 0 12px 12px;
}
.cart-summary-line {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 0.95rem;
}
.cart-summary-total {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    font-size: 1.2rem;
    font-weight: 700;
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 120px;
    }
    
    .hero-subtitle {
        margin: 0 auto var(--space-lg);
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

@media (max-width: 768px) {
    .nav-container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0 15px;
    }

    .nav-links {
        display: none;
    }
    
    .hide-mobile {
        display: none !important;
    }

    .mobile-menu-btn {
        display: flex;
        font-size: 1.5rem;
        background: none;
        border: none;
        color: var(--color-text-primary);
        cursor: pointer;
    }

    .logo span {
        font-size: 1.2rem;
    }

    .nav-right .btn-primary {
        padding: 8px 15px;
        font-size: 0.9rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }

    .product-grid {
        grid-template-columns: 1fr 1fr;
        gap: 15px;
    }

    .product-img-container {
        height: 180px;
        padding: 10px;
    }

    .product-info {
        padding: 15px;
    }

    .product-title {
        font-size: 1rem;
    }

    .product-desc {
        font-size: 0.8rem;
        margin-bottom: 15px;
    }

    .price {
        font-size: 1.1rem;
    }

    .product-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .product-footer > div:last-child {
        width: 100%;
        display: flex;
        flex-direction: column;
    }

    .product-footer .btn {
        width: 100%;
    }
}

/* Text Pages (Legal, About, FAQ) */
.text-page {
    padding: 150px var(--space-lg) var(--space-xxl);
    max-width: 800px;
    margin: 0 auto;
    color: var(--color-text-primary);
}

.text-page h1 {
    font-size: 2.5rem;
    margin-bottom: 30px;
}

.text-page h2 {
    font-size: 1.5rem;
    margin-top: 40px;
    margin-bottom: 15px;
}

.text-page p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
    font-size: 1.05rem;
}

.text-page ul {
    color: var(--color-text-secondary);
    margin-bottom: 20px;
    padding-left: 20px;
    line-height: 1.8;
}

.faq-container .faq-question {
    font-weight: 600;
    font-size: 1.2rem;
    margin-top: 30px;
    margin-bottom: 10px;
}