/* =========================================
   KELLER PREMIUM - DESIGN SYSTEM
   Modern Industrial Premium
   ========================================= */



/* =========================================
   VARIABLES DESIGN
   ========================================= */
:root { 
    /* Couleurs principales */
    --keller-red: #E31E24;
    --keller-dark: #1A1A1A;
    --keller-black: #000000;
    --keller-white: #FFFFFF;
    --keller-grey-light: #F5F5F5;
    --keller-grey-medium: #E0E0E0;
    --keller-grey-dark: #666666;
    --keller-gold: #D4AF37;
    
    /* Typographie */
    --font-display: 'Archivo Black', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Espacements */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 32px;
    --spacing-lg: 64px;
    --spacing-xl: 120px;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Ombres */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --shadow-xl: 0 16px 64px rgba(0, 0, 0, 0.24);
}

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

html { 
    scroll-behavior: smooth;
    font-size: 16px;
}

body { 
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
    color: var(--keller-dark);
    background-color: var(--keller-white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Sélection de texte */
::selection {
    background-color: var(--keller-red);
    color: var(--keller-white);
}

/* =========================================
   NAVIGATION - Premium Fixed
   ========================================= */
nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 90px;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--keller-grey-medium);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--spacing-lg);
    z-index: 1000;
    transition: all var(--transition-smooth);
}

nav.scrolled {
    height: 70px;
    box-shadow: var(--shadow-md);
}

/* Logo */
.logo-container {
    display: flex;
    align-items: center;
    height: 100%;
}

.logo-container a {
    display: block;
    height: 85px;
    transition: transform var(--transition-fast);
}

.logo-container a:hover {
    transform: scale(1.05);
}

.logo-container img {
    height: 100%;
    width: auto;
}

/* Navigation Links */
.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-links li {
    position: relative;
}

.nav-links a {
    color: var(--keller-dark);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    padding: 10px 0;
    position: relative;
    transition: color var(--transition-fast);
    display: block;
}

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

.nav-links a:hover {
    color: var(--keller-red);
}

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

/* Dropdown Menu */
.nav-item {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--keller-white);
    min-width: 280px;
    padding: var(--spacing-sm) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-smooth);
    box-shadow: var(--shadow-lg);
    border-radius: 4px;
    margin-top: 0;
    pointer-events: none;
}

/* Espace invisible entre le menu parent et le dropdown pour éviter la fermeture */
.nav-item::before {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    height: 20px;
    background: transparent;
    display: none;
}

.nav-item:hover::before {
    display: block;
}

.nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.dropdown-menu a {
    display: block;
    padding: 14px 24px;
    font-size: 0.85rem;
    font-weight: 500;
    border-left: 3px solid transparent;
    text-transform: none;
    transition: all var(--transition-fast);
}

.dropdown-menu a::after {
    display: none;
}

.dropdown-menu a:hover {
    background-color: var(--keller-grey-light);
    border-left-color: var(--keller-red);
    padding-left: 28px;
}

.dropdown-icon {
    font-size: 0.7rem;
    margin-left: 5px;
    transition: transform var(--transition-fast);
}

.nav-item:hover .dropdown-icon {
    transform: rotate(180deg);
}

/* Button Devis */
.btn-devis {
    background: var(--keller-red);
    color: var(--keller-white);
    padding: 14px 32px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    transition: all var(--transition-smooth);
    box-shadow: var(--shadow-sm);
}

.btn-devis:hover {
    background: var(--keller-black);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Menu Burger (Mobile) */
.burger-menu {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 25px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 2000;
}

.burger-menu span {
    width: 100%;
    height: 3px;
    background: var(--keller-dark);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.burger-menu.toggle span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.burger-menu.toggle span:nth-child(2) {
    opacity: 0;
}

.burger-menu.toggle span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* =========================================
   HERO SECTION - Premium
   ========================================= */
#hero {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--keller-black) 0%, var(--keller-dark) 100%);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.4;
    filter: grayscale(20%);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--keller-white);
    max-width: 1200px;
    padding: 0 var(--spacing-md);
}

.hero-subtitle {
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--keller-red);
    margin-bottom: var(--spacing-sm);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

.hero-logo {
    width: clamp(400px, 50vw, 700px);
    height: auto;
    margin-bottom: var(--spacing-md);
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.2s forwards;
    filter: drop-shadow(0 4px 20px rgba(0, 0, 0, 0.5));
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 6vw, 4rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: -2px;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.2s forwards;
}

.hero-description {
    font-size: clamp(2rem, 2.7vw, 1.8rem);
    font-weight: 300;
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
    opacity: 0.9;
    line-height: 1.8;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.4s forwards;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.6s forwards;
}

.btn-primary {
    background: var(--keller-red);
    color: var(--keller-white);
    padding: 18px 48px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: all var(--transition-smooth);
    border: 2px solid var(--keller-red);
    display: inline-block;
}

.btn-primary:hover {
    background: transparent;
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(227, 30, 36, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--keller-white);
    padding: 18px 48px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: all var(--transition-smooth);
    border: 2px solid var(--keller-white);
    display: inline-block;
}

.btn-secondary:hover {
    background: var(--keller-white);
    color: var(--keller-dark);
    transform: translateY(-3px);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 50px;
    border: 2px solid rgba(255,255,255,0.5);
    border-radius: 20px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
    cursor: pointer;
    animation: bounce 2s infinite;
}

.scroll-indicator::before {
    content: '';
    width: 6px;
    height: 10px;
    background: var(--keller-white);
    border-radius: 3px;
    animation: scroll 2s infinite;
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

@keyframes scroll {
    0% {
        transform: translateY(0);
        opacity: 1;
    }
    100% {
        transform: translateY(15px);
        opacity: 0;
    }
}

/* =========================================
   SECTIONS STANDARD
   ========================================= */
section {
    padding: var(--spacing-xl) var(--spacing-lg);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-subtitle {
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--keller-red);
    margin-bottom: var(--spacing-xs);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    color: var(--keller-dark);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

.section-description {
    font-size: 1.1rem;
    color: var(--keller-grey-dark);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

/* Background variations */
.bg-light {
    background-color: var(--keller-grey-light);
}

.bg-dark {
    background-color: var(--keller-dark);
    color: var(--keller-white);
}

.bg-dark .section-title,
.bg-dark .section-description {
    color: var(--keller-white);
}

/* =========================================
   CATEGORY NAVIGATION
   ========================================= */
.category-nav {
    position: sticky;
    top: 90px;
    z-index: 999;
    background: var(--keller-white);
    border-bottom: 1px solid var(--keller-grey-medium);
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.filter-btn {
    padding: 12px 28px;
    border: 2px solid var(--keller-grey-medium);
    background: var(--keller-white);
    color: var(--keller-grey-dark);
    cursor: pointer;
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all var(--transition-smooth);
    text-decoration: none;
    border-radius: 4px;
    font-family: var(--font-body);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--keller-red);
    color: var(--keller-white);
    border-color: var(--keller-red);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

/* =========================================
   CATALOG GRID - Premium Cards
   ========================================= */
.catalog-container {
    padding: var(--spacing-lg);
    max-width: 1400px;
    margin: 0 auto;
}

.category-section {
    scroll-margin-top: 200px;
    margin-bottom: var(--spacing-xl);
}

.category-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: var(--spacing-lg);
    color: var(--keller-dark);
    border-left: 6px solid var(--keller-red);
    padding-left: var(--spacing-md);
    text-transform: uppercase;
}

.machine-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: var(--spacing-md);
}

/* Machine Card Premium */
.machine-card {
    background: var(--keller-white);
    border-radius: 8px;
    overflow: hidden;
    transition: all var(--transition-smooth);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--keller-grey-medium);
}

.machine-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--keller-red);
}

.machine-img-box {
    height: 300px;
    background: var(--keller-grey-light);
    overflow: hidden;
    position: relative;
}

.machine-img-box::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, transparent 0%, rgba(0,0,0,0.3) 100%);
    opacity: 0;
    transition: opacity var(--transition-smooth);
}

.machine-card:hover .machine-img-box::after {
    opacity: 1;
}

.machine-img-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.machine-card:hover .machine-img-box img {
    transform: scale(1.08);
}

.machine-info {
    padding: var(--spacing-md);
}

.machine-info h3 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 900;
    margin-bottom: var(--spacing-sm);
    color: var(--keller-dark);
}

.specs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--keller-grey-medium);
}

.spec-item {
    display: flex;
    flex-direction: column;
}

.spec-label {
    font-size: 0.7rem;
    color: var(--keller-grey-dark);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.spec-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--keller-dark);
}

.btn-fiche {
    display: block;
    width: 100%;
    padding: 16px;
    background: var(--keller-dark);
    color: var(--keller-white);
    text-align: center;
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-smooth);
    text-decoration: none;
    border-radius: 4px;
}

.btn-fiche:hover {
    background: var(--keller-red);
}

/* =========================================
   MODAL PREMIUM
   ========================================= */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(15,15,15,0.55);
    backdrop-filter: blur(10px);
    overflow-y: auto;
}

.modal-content {
    background: var(--keller-white);
    width: 95%;
    max-width: 1400px;
    margin: 2vh auto;
    position: relative;
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    min-height: 90vh;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.close-modal {
    position: absolute;
    right: 30px;
    top: 20px;
    font-size: 36px;
    cursor: pointer;
    color: var(--keller-dark);
    font-weight: bold;
    z-index: 100;
    transition: all var(--transition-fast);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--keller-white);
    box-shadow: var(--shadow-sm);
}

.close-modal:hover {
    color: var(--keller-red);
    transform: rotate(90deg);
    box-shadow: var(--shadow-md);
}

.modal-left {
    background: var(--keller-black);
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.main-img-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    background: var(--keller-black);
    overflow: hidden;
}

.main-img-container img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.thumb-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
    padding: 8px;
    background: var(--keller-dark);
}

.thumb-gallery img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    cursor: pointer;
    opacity: 0.6;
    transition: all var(--transition-fast);
    border-radius: 4px;
}

.thumb-gallery img:hover {
    opacity: 1;
    transform: scale(1.05);
}

.modal-right {
    padding: var(--spacing-lg);
    color: var(--keller-dark);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.modal-right h2 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: var(--spacing-sm);
    color: var(--keller-dark);
}

.modal-right p {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--keller-grey-dark);
    margin-bottom: var(--spacing-md);
}

.price-notice-modal {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md) 0;
    border-top: 2px solid var(--keller-grey-light);
    border-bottom: 2px solid var(--keller-grey-light);
    font-weight: 700;
    font-size: 1.3rem;
    color: var(--keller-red);
}

/* =========================================
   FOOTER PREMIUM
   ========================================= */
footer {
    background: var(--keller-dark);
    padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-md);
    color: var(--keller-white);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

.footer-col h4 {
    font-family: var(--font-display);
    color: var(--keller-red);
    margin-bottom: var(--spacing-sm);
    font-size: 1.2rem;
    font-weight: 900;
}

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

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: var(--keller-white);
    text-decoration: none;
    transition: color var(--transition-fast);
    font-size: 0.95rem;
}

.footer-col ul li a:hover {
    color: var(--keller-red);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    max-width: 1400px;
    margin: 0 auto;
}

/* =========================================
   RESPONSIVE
   ========================================= */
@media (max-width: 1200px) {
    :root {
        --spacing-xl: 80px;
        --spacing-lg: 40px;
    }
    
    .machine-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    }
}

@media (max-width: 900px) {
    nav {
        padding: 0 var(--spacing-md);
        height: 70px;
    }
    
    .logo-container a {
        height: 50px;
    }
    
    .burger-menu {
        display: flex;
    }
    
    .btn-devis {
        display: none;
    }
    
    .nav-links {
        position: fixed;
        right: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--keller-white);
        width: 100%;
        max-width: 400px;
        height: calc(100vh - 70px);
        padding: var(--spacing-md) 0;
        gap: 0;
        transition: right var(--transition-smooth);
        overflow-y: auto;
        box-shadow: var(--shadow-xl);
        border-left: 1px solid var(--keller-grey-medium);
    }
    
    .nav-links.nav-active {
        right: 0;
    }
    
    .nav-links li {
        width: 100%;
    }
    
    .nav-links > li > a {
        padding: 20px var(--spacing-md);
        font-size: 1rem;
        border-bottom: 1px solid var(--keller-grey-light);
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: var(--keller-grey-light);
        margin: 0;
        padding: 0;
        display: none;
    }
    
    .nav-item.submenu-active .dropdown-menu {
        display: block;
    }
    
    .dropdown-menu a {
        padding: 15px var(--spacing-lg);
        font-size: 0.9rem;
        border-left: 3px solid var(--keller-red);
    }
    
    .category-nav {
        flex-wrap: wrap;
        top: 70px;
        padding: var(--spacing-sm);
        gap: 8px;
    }
    
    .filter-btn {
        flex: 1 1 calc(50% - 8px);
        padding: 10px 16px;
        font-size: 0.7rem;
    }
    
    .modal-content {
        grid-template-columns: 1fr;
        height: 100vh;
        margin: 0;
        width: 100%;
        border-radius: 0;
    }
    
    .modal-left,
    .modal-right {
        padding: var(--spacing-md);
    }
    
    .machine-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 3rem;
    }
}

@media (max-width: 600px) {
    :root {
        --spacing-xl: 60px;
        --spacing-lg: 30px;
        --spacing-md: 20px;
    }
    
    nav {
        height: 60px;
    }
    
    .logo-container a {
        height: 40px;
    }
    
    .nav-links {
        top: 60px;
        height: calc(100vh - 60px);
        max-width: 100%;
    }
    
    .category-nav {
        top: 60px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    section {
        padding: var(--spacing-lg) var(--spacing-md);
    }
}

/* =========================================
   UTILITY CLASSES
   ========================================= */
.text-center { text-align: center; }
.text-red { color: var(--keller-red); }
.font-display { font-family: var(--font-display); }
.font-bold { font-weight: 700; }
.uppercase { text-transform: uppercase; }

/* Modal open state */
body.modal-open {
    overflow: hidden;
}
.machine-card {
  background: var(--color-surface);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease;
  /* autres propriétés */
}
/* =========================================
   MODALES DEVIS & CONTACT
   ========================================= */

/* Overlay Modal */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    z-index: 3000;
    justify-content: center;
    align-items: center;
    padding: 20px;
    overflow-y: auto;
}

.modal-overlay.active {
    display: flex;
}

/* Container Modal */
.modal-container {
    background: var(--keller-white);
    width: 100%;
    max-width: 600px;
    border-radius: 8px;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.4s ease;
    max-height: 90vh;
    overflow-y: auto;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Header Modal */
.modal-header {
    background: var(--keller-dark);
    color: var(--keller-white);
    padding: 30px 40px;
    border-radius: 8px 8px 0 0;
    position: relative;
}

.modal-header h2 {
    margin: 0;
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.modal-header p {
    margin: 10px 0 0 0;
    opacity: 0.9;
    font-size: 0.95rem;
}

/* Close Button */
.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: transparent;
    border: none;
    color: var(--keller-white);
    font-size: 28px;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s;
}

.modal-close:hover {
    background: var(--keller-red);
    transform: rotate(90deg);
}

/* Body Modal */
.modal-body {
    padding: 40px;
}

/* Form Styles */
.modal-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--keller-dark);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group label .required {
    color: var(--keller-red);
    margin-left: 3px;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 14px 16px;
    border: 2px solid var(--keller-grey-medium);
    border-radius: 4px;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: all 0.3s;
    background: var(--keller-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--keller-red);
    box-shadow: 0 0 0 3px rgba(227, 30, 36, 0.1);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

/* Form Row (2 colonnes) */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

/* Checkbox / Radio */
.form-checkbox {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 10px;
}

.form-checkbox input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.form-checkbox label {
    margin: 0;
    font-weight: 400;
    text-transform: none;
    cursor: pointer;
    font-size: 0.9rem;
}

/* Submit Button */
.btn-submit-modal {
    background: var(--keller-red);
    color: var(--keller-white);
    padding: 18px 32px;
    border: none;
    border-radius: 4px;
    font-weight: 700;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 10px;
    font-family: var(--font-body);
}

.btn-submit-modal:hover {
    background: var(--keller-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(227, 30, 36, 0.3);
}

.btn-submit-modal:active {
    transform: translateY(0);
}

/* Info Box */
.info-box {
    background: var(--keller-grey-light);
    border-left: 4px solid var(--keller-red);
    padding: 16px 20px;
    margin-bottom: 20px;
    border-radius: 4px;
}

.info-box p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--keller-grey-dark);
    line-height: 1.6;
}

/* Success Message */
.success-message {
    display: none;
    background: #10b981;
    color: white;
    padding: 20px;
    border-radius: 4px;
    text-align: center;
    margin-bottom: 20px;
}

.success-message.show {
    display: block;
    animation: slideInDown 0.4s ease;
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Error Message */
.error-message {
    display: none;
    background: #ef4444;
    color: white;
    padding: 15px;
    border-radius: 4px;
    text-align: center;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.error-message.show {
    display: block;
}

/* Responsive */
@media (max-width: 768px) {
    .modal-container {
        max-width: 100%;
        border-radius: 0;
        max-height: 100vh;
    }
    
    .modal-header {
        padding: 25px 20px;
    }
    
    .modal-header h2 {
        font-size: 1.5rem;
    }
    
    .modal-body {
        padding: 25px 20px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .modal-close {
        top: 15px;
        right: 15px;
    }
}

/* Prevent body scroll when modal open */
body.modal-open {
    overflow: hidden;
}
/* Caché sur desktop */
.nav-mobile-only { display: none; }

/* Visible dans le menu mobile */
@media (max-width: 900px) {
  .nav-mobile-only { display: block; }

  .nav-mobile-only a {
    color: #fff;
    font-weight: 900;
    text-transform: uppercase;
  }
}
/* CTA large (section rouge bas de page) */
.btn-cta-large{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;

  padding: 14px 22px;
  min-height: 48px;

  background: var(--keller-white);
  color: #111;
  border: 2px solid var(--keller-white);
  border-radius: 999px;

  font-weight: 900;
  letter-spacing: 1px;
  text-transform: uppercase;
  text-decoration: none;

  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
}

.btn-cta-large:hover{
  transform: translateY(-2px);
  box-shadow: 0 16px 40px rgba(0,0,0,.25);
  background: transparent;
  color: var(--keller-white);
}
@media (max-width: 900px){
  .nav-links.nav-active .nav-mobile-only a{
    display: flex;
    justify-content: center;

    margin: 12px 16px;
    padding: 12px 16px;

    background: var(--keller-red);
    color: var(--keller-white) !important;

    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.6px;

    border-radius: 12px;
    border-bottom: none;
  }
}
.dark-section .section-title {
  color: var(--keller-white);
}
.dark-section .section-subtitle {
  color: rgba(255, 255, 255, 0.7);
}
/* INTRO PAGE MACHINES */
.machines-intro {
    max-width: 1000px;
    margin: 70px auto 100px;
    padding: 0 40px;
    text-align: left;
}

.machines-intro-label {
    color: var(--keller-red);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 18px;
}

.machines-intro h2 {
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 4vw, 3.5rem);
    line-height: 1.05;
    text-transform: uppercase;
    color: var(--keller-dark);
    margin-bottom: 30px;
    letter-spacing: -1px;
    max-width: 850px;
}

.machines-intro p {
    font-size: 1.08rem;
    line-height: 1.9;
    color: var(--keller-grey-dark);
    max-width: 820px;
}

.machines-intro p + p {
    margin-top: 18px;
}

@media (max-width: 768px) {
    .machines-intro {
        padding: 0 24px;
        margin: 50px auto 70px;
    }

    .machines-intro h2 {
        font-size: 2rem;
    }

    .machines-intro p {
        font-size: 1rem;
        line-height: 1.7;
    }
}
/* DESCRIPTIONS CATÉGORIES MACHINES */
.category-description {
    max-width: 900px;
    margin: -10px 0 50px;
    font-size: 1.02rem;
    line-height: 1.9;
    color: var(--keller-grey-dark);
}

.category-description p {
    margin: 0;
}

.category-description p + p {
    margin-top: 14px;
}

@media (max-width: 768px) {
    .category-description {
        margin: -5px 0 35px;
        font-size: 0.98rem;
        line-height: 1.75;
    }
}
/* WHY KELLER */
.why-keller-section {
    background: var(--keller-grey-light);
}

.why-keller-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 50px;
    margin-top: 70px;
}

.why-keller-item h3 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    text-transform: uppercase;
    margin-bottom: 20px;
    color: var(--keller-dark);
}

.why-keller-item p {
    color: var(--keller-grey-dark);
    line-height: 1.9;
    font-size: 1rem;
}

@media (max-width: 900px) {
    .why-keller-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}