/* Reset et configuration de base */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Variables CSS pour la cohérence et la maintenance */
:root {
    /* Couleurs */
    --color-primary: #e84242;
    --color-bg-main: #0a0a0a;
    --color-bg-secondary: #111;
    --color-bg-tertiary: #1a1a1a;
    --color-bg-quaternary: #2a2a2a;
    --color-text-primary: #ffffff;
    --color-text-secondary: #cccccc;
    --color-text-tertiary: #ccc;
    --color-text-muted: #e9e9e9;
    
    /* Transparences */
    --color-white-10: rgba(255, 255, 255, 0.1);
    --color-white-20: rgba(255, 255, 255, 0.2);
    --color-white-30: rgba(255, 255, 255, 0.3);
    --color-black-60: rgba(0, 0, 0, 0.6);
    --color-black-90: rgba(0, 0, 0, 0.9);
    --color-black-95: rgba(0, 0, 0, 0.95);
    
    /* Dégradés */
    --gradient-text: linear-gradient(0deg, var(--color-text-primary), var(--color-text-secondary));
    --gradient-bg-hero: linear-gradient(135deg, var(--color-bg-main) 0%, #1c243d 50%, var(--color-bg-main) 100%);
    --gradient-bg-section: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-tertiary) 50%, var(--color-bg-secondary) 100%);
    --gradient-card: linear-gradient(145deg, var(--color-bg-tertiary), var(--color-bg-quaternary));
    --gradient-button: linear-gradient(0deg, #333, #555);
    
    /* Espacements */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Tailles de police */
    --font-size-xs: 0.6rem;
    --font-size-sm: 0.7rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.1rem;
    --font-size-xl: 1.4rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 2.2rem;
    --font-size-4xl: 2.5rem;
    
    /* Rayons de bordure */
    --border-radius-sm: 10px;
    --border-radius-md: 15px;
    --border-radius-lg: 20px;
    --border-radius-full: 50px;
    
    /* Transitions */
    --transition-fast: 0.3s ease;
    --transition-medium: 0.5s ease;
    --transition-slow: 0.8s cubic-bezier(0.4, 0.0, 0.2, 1);
    
    /* Ombres */
    --shadow-sm: 0 10px 30px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 20px 40px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 30px 60px rgba(0, 0, 0, 0.7);
    
    /* Flou */
    --blur-sm: blur(10px);
}

/* Configuration du body */
body {
    font-family: 'Roboto', sans-serif;
    background: var(--color-bg-main);
    color: var(--color-text-primary);
    overflow-x: hidden;
    line-height: 1.6;
}

/* Reset des liens */
a {
    text-decoration: none;
    color: inherit;
}

/* Sélection de texte personnalisée */
::selection {
    background-color: var(--color-primary);
    color: #000;
}

::-moz-selection {
    background-color: var(--color-primary);
    color: #000;
}

/* =================================
   HEADER ET NAVIGATION
   ================================= */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(180deg, var(--color-black-90) 0%, rgba(0,0,0,0.7) 70%, transparent 100%);
    backdrop-filter: var(--blur-sm);
    transition: var(--transition-fast);
}

.logo {
    font-size: var(--font-size-3xl);
    font-weight: bold;
    letter-spacing: 2px;
    text-transform: uppercase;
    background: var(--gradient-text);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 30px var(--color-white-30);
}

.logo img {
    max-height: 100px;
    width: auto;
    height: auto;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
}

.nav-menu a {
    color: var(--color-text-tertiary);
    transition: var(--transition-fast);
    font-weight: 500;
}

.nav-menu a:hover,
.nav-menu a:focus {
    color: var(--color-text-primary);
}


#lang{
    top: 1.5rem;
	right: 2rem;
	position: absolute;
}

 #lang img{
    max-height: 25px;
    padding: 3px;
}

.langon{
    opacity: 1;
}

.langoff{
    filter: grayscale();
    opacity: 0.8;
}

.langoff:hover{
    filter: initial;
    opacity: 1;
    transition: ease 0.5s;
}

/* Menu hamburger pour mobile */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 5px;
    background: none;
    border: none;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--color-text-primary);
    margin: 3px 0;
    transition: var(--transition-fast);
    border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--color-black-95);
    backdrop-filter: var(--blur-sm);
    z-index: 999;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
}

.mobile-menu.active {
    display: flex;
}

.mobile-menu a {
    color: var(--color-text-primary);
    font-size: var(--font-size-md);
    font-weight: 500;
    transition: var(--transition-fast);
}

.mobile-menu a:hover,
.mobile-menu a:focus {
    color: var(--color-text-tertiary);
}

/* =================================
   SECTION HERO ET CAROUSEL
   ================================= */

.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-bg-hero);
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(255,255,255,0.05) 0%, transparent 70%);
    pointer-events: none;
}

.title-section {
    position: absolute;
    width: 100%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -300px);
    text-align: center;
    z-index: 10;
}

.main-title {
    font-size: var(--font-size-2xl);
    font-weight: bold;
    background: var(--gradient-text);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.3rem;
    opacity: 0.8;
    color: var(--color-text-muted);
    letter-spacing: 1px;
}

.carousel-container {
    position: relative;
    width: 100%;
    max-width: 1200px;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    perspective: 1200px;
}

.carousel {
    position: relative;
    width: 100%;
    height: 320px;
    transform-style: preserve-3d;
    transition: transform var(--transition-slow);
}

.carousel-item {
    position: absolute;
    width: 280px;
    height: 320px;
    left: 50%;
    top: 50%;
    margin-left: -140px;
    margin-top: -160px;
    border-radius: var(--border-radius-lg);
    /* Dégradé complexe optimisé en CSS custom properties */
    background: 
        radial-gradient(circle at center center, transparent, rgb(0,0,0)),
        linear-gradient(300deg, rgba(198, 198, 198, 0.05) 0%, rgba(198, 198, 198, 0.05) 50%, rgba(11, 11, 11, 0.05) 50%, rgba(11, 11, 11, 0.05) 100%),
        linear-gradient(64deg, rgba(54, 54, 54, 0.05) 0%, rgba(54, 54, 54, 0.05) 50%, rgba(132, 132, 132, 0.05) 50%, rgba(132, 132, 132, 0.05) 100%),
        radial-gradient(circle at center center, hsl(290, 5%, 8%), hsl(290, 5%, 8%));
    border: 2px solid #000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-slow);
    backdrop-filter: var(--blur-sm);
    overflow: hidden;
    transform-style: preserve-3d;
    backface-visibility: hidden;
}

.carousel-item.active {
    transform: translateZ(50px) scale(1.1);
    border-color: var(--color-text-primary);
    z-index: 10;
}

.carousel-item:not(.active) {
    opacity: 0.6;
    filter: blur(1px);
}

.carousel-item:hover:not(.active) {
    opacity: 0.8;
    transform: translateZ(20px) scale(1.05);
}

.carousel-item.active:hover {
    transform: translateZ(70px) scale(1.15);
}

.bike-image {
    width: 250px;
    height: 210px;
    border-radius: var(--border-radius-sm);
    margin-bottom: 15px;
    position: relative;
    transition: filter var(--transition-fast);
    filter: grayscale(100%) brightness(0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-primary);
    font-size: 0.9rem;
    text-align: center;
    overflow: hidden;
}

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

.carousel-item.active .bike-image {
    filter: grayscale(0%) brightness(1);
}

.bike-name {
    font-size: var(--font-size-lg);
    font-weight: bold;
    text-align: center;
    margin-bottom: 8px;
    background: var(--gradient-text);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.bike-description {
    font-size: var(--font-size-sm);
    text-align: center;
    opacity: 0.8;
    color: var(--color-text-tertiary);
    padding: 0 10px;
}

.controls {
    position: absolute;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 20px;
    z-index: 50;
}

.control-btn {
    width: 50px;
    height: 50px;
    border: 2px solid var(--color-white-30);
    background: var(--color-black-60);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast);
    backdrop-filter: var(--blur-sm);
    font-size: 1.2rem;
    color: var(--color-text-primary);
    user-select: none;
}

.control-btn:hover,
.control-btn:focus {
    border-color: rgba(255, 255, 255, 0.6);
    background: var(--color-white-10);
    transform: scale(1.1);
}

.control-btn:active {
    transform: scale(0.95);
}

/* =================================
   SECTIONS DE CONTENU
   ================================= */

.content-section {
    padding: 80px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: var(--font-size-2xl);
    font-weight: bold;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    background: var(--gradient-text);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Section À propos */
.about-section {
    background: var(--gradient-bg-section);
    position: relative;
}

.about-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-white-30), transparent);
}

#intromm p {
    padding: 5px;
    font-style: italic;
    font-size: 14px;
    text-align: justify;
    color: var(--color-text-tertiary);
    margin-bottom: var(--spacing-sm);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.about-card {
    background: var(--gradient-card);
    padding: 30px;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--color-white-10);
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    transition: left var(--transition-medium);
}

.about-card:hover::before {
    left: 100%;
}

.about-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-white-20);
    box-shadow: var(--shadow-md);
}

.card-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: 20px;
    display: block;
    text-align: center;
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: bold;
    margin-bottom: 15px;
    color: var(--color-text-primary);
    text-align: center;
}

.card-text {
    color: var(--color-text-tertiary);
    line-height: 1.6;
    text-align: center;
}

/* Section des sites */
.sites-section {
    background: var(--color-bg-main);
    padding: 40px 20px;
}

#introsites {
    text-align: center;
}

#introsites .section-title {
    margin: initial;
}

#introsites .subtitle {
    margin-bottom: var(--spacing-lg);
}

/* Section des statistiques */
.stats-section {
    background: var(--color-bg-main);
    padding: 20px 20px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    max-width: 800px;
    margin: 0 auto;
}

.stat-item {
    text-align: center;
    padding: 30px 20px;
    background: var(--gradient-card);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--color-white-10);
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

/* Effet hover subtil pour les stats (non-cliquables) */
.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    transition: left var(--transition-medium);
}

.stat-item:hover::before {
    left: 100%;
}

.stat-item:hover {
    transform: translateY(-2px);
    border-color: var(--color-white-20);
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: bold;
    background: var(--gradient-text);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: block;
    margin-bottom: 10px;
}

.stat-label {
    color: var(--color-text-tertiary);
    font-size: var(--font-size-base);
    display: block;
}

.stat-desc {
    font-size: var(--font-size-sm);
    text-align: center;
    opacity: 0.8;
    color: var(--color-text-tertiary);
}

/* Section des marques */
.marques-section {
    background: var(--color-bg-main);
    padding: 40px 20px;
}

.brand-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 20px;
    max-width: 1100px;
    margin: 0 auto;
}

/* Assurer que le lien occupe toute la zone cliquable */
.brand-grid a,
.stats-grid a {
    display: block;
    text-decoration: none;
    color: inherit;
}

.brand-item {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    height: 100px;
    text-align: center;
    padding: 5px;
    background: var(--gradient-card);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--color-white-10);
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

/* Effet hover marqué pour les brands (cliquables) - même que about-card */
.brand-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    transition: left var(--transition-medium);
}

.brand-grid a:hover .brand-item::before,
.brand-item:hover::before {
    left: 100%;
}

.brand-grid a:hover .brand-item,
.brand-item:hover {
    transform: translateY(-5px);
    border-color: var(--color-white-20);
    box-shadow: var(--shadow-md);
}

/* Effet hover marqué pour les sites (cliquables) - même que about-card */
.sites-section .stat-item {
    position: relative;
    overflow: hidden;
}

.sites-section .stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    transition: left var(--transition-medium);
}

.stats-grid a:hover .stat-item::before {
    left: 100%;
}

.stats-grid a:hover .stat-item {
    transform: translateY(-5px);
    border-color: var(--color-white-20);
    box-shadow: var(--shadow-md);
}

.sitefav img {
    height: 24px;
    width: auto;
}

.site-label,
.part-label {
    font-size: var(--font-size-base);
    font-weight: bold;
    background: var(--gradient-text);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: block;
    margin-bottom: 5px;
}

.site-desc {
    font-size: var(--font-size-sm);
    text-align: center;
    opacity: 0.8;
    color: var(--color-text-tertiary);
}

/* Section CTA */
.cta-section {
    background: linear-gradient(135deg, var(--color-bg-tertiary) 0%, var(--color-bg-main) 50%, var(--color-bg-tertiary) 100%);
    padding: 80px 20px;
    text-align: center;
}

.cta-button {
    display: inline-block;
    padding: 15px 40px;
    background: var(--gradient-button);
    color: var(--color-text-primary);
    border-radius: var(--border-radius-full);
    font-weight: bold;
    transition: var(--transition-fast);
    border: 2px solid var(--color-white-20);
    margin-top: 30px;
}

.cta-button:hover,
.cta-button:focus {
    transform: translateY(-3px);
    box-shadow: var(--shadow-sm);
    border-color: rgba(255, 255, 255, 0.4);
}

/* Footer */
.footer {
    height: 5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    font-size: var(--font-size-sm);
}

.footext {
    margin: 2px 0;
}

.footer a {
    color: var(--color-primary);
    transition: var(--transition-fast);
}

.footer a:hover,
.footer a:focus {
    opacity: 0.8;
}

/* Éléments flottants */
.floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

.floating-element {
    position: absolute;
    width: 3px;
    height: 3px;
    background: var(--color-white-20);
    border-radius: 50%;
    animation: float 8s infinite linear;
}

@keyframes float {
    0% {
        transform: translateY(100vh) translateX(0);
        opacity: 0;
    }
    10%, 90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) translateX(50px);
        opacity: 0;
    }
}

/* =================================
   RESPONSIVE DESIGN
   ================================= */

/* Tablettes et écrans moyens */
@media (max-width: 1024px) {
    .header {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .carousel-container {
        max-width: 90%;
        height: 380px;
    }
    
    .main-title {
        font-size: 2.8rem;
    }
    
    .subtitle {
        font-size: 1.2rem;
    }
}

/* Tablettes et mobiles */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
    }
    
    .header {
        padding: var(--spacing-sm);
    }
    
    .logo img {
        max-height: 60px;
    }
    
    .nav-menu {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .title-section {
        transform: translate(-50%, -280px);
        padding: 0 var(--spacing-sm);
    }
    
    .main-title {
        font-size: var(--font-size-3xl);
        margin-bottom: var(--spacing-xs);
    }
    
    .subtitle {
        font-size: var(--font-size-base);
    }
    
    .carousel-container {
        max-width: 95%;
        height: 320px;
        perspective: 800px;
    }
    
    .carousel {
        height: 280px;
    }
    
    .carousel-item {
        width: 220px;
        height: 280px;
        margin-left: -110px;
        margin-top: -140px;
    }
    
    .bike-image {
        width: 190px;
        height: 160px;
        margin-bottom: 10px;
    }
    
    .bike-image img {
        max-width: 100%;
        max-height: 100%;
        object-fit: contain;
    }
    
    .bike-name {
        font-size: var(--font-size-base);
        margin-bottom: 5px;
    }
    
    .bike-description {
        font-size: 0.65rem;
        padding: 0 10px;
    }
    
    .controls {
        bottom: 150px;
        gap: 15px;
    }
    
    .control-btn {
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
        margin-bottom: var(--spacing-lg);
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .about-card {
        padding: 25px 20px;
    }
    
    .card-icon {
        font-size: var(--font-size-2xl);
        margin-bottom: 15px;
    }
    
    .card-title {
        font-size: 1.2rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .stat-item {
        padding: 20px 15px;
    }
    
    .stat-number {
        font-size: var(--font-size-2xl);
    }
    
    .content-section {
        padding: 60px 15px;
    }

    .footer {
        padding: 20px;
        text-align: center;
    }
}

/* Mobiles petits */
@media (max-width: 480px) {
    .header {
        padding: 0.8rem;
    }
    
    .logo img {
        max-height: 50px;
    }
    
    .title-section {
        transform: translate(-50%, -260px);
    }
    
    .main-title {
        font-size: 1.8rem;
    }
    
    .subtitle {
        font-size: 0.9rem;
    }
    
    .carousel-container {
        height: 300px;
    }
    
    .carousel {
        height: 260px;
    }
    
    .carousel-item {
        width: 200px;
        height: 260px;
        margin-left: -100px;
        margin-top: -130px;
    }
    
    .bike-image {
        width: 170px;
        height: 140px;
    }
    
    .bike-name {
        font-size: 0.9rem;
    }
    
    .bike-description {
        font-size: var(--font-size-xs);
    }
    
    .controls {
        bottom: 140px;
    }
    
    .control-btn {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-base);
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .about-card {
        padding: 20px 15px;
    }
    
    .card-title {
        font-size: 1.1rem;
    }
    
    .content-section {
        padding: 50px 10px;
    }
    
    .cta-button {
        padding: 12px 30px;
        font-size: 0.9rem;
    }
}

/* Très petits écrans */
@media (max-width: 360px) {
    .main-title {
        font-size: 1.6rem;
    }
    
    .carousel-item {
        width: 180px;
        height: 240px;
        margin-left: -90px;
        margin-top: -120px;
    }
    
    .bike-image {
        width: 150px;
        height: 120px;
    }
}

/* Amélioration de l'accessibilité pour les animations */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .floating-element {
        display: none;
    }
}