/*
Theme Name: Aliments Chatel
Description: Thème premium élégant plongeant dans l'univers de 1920 pour la distribution de viande.
Author: Assistant IA
Version: 1.0.0
*/

/* 
   ALIMENTS CHATEL
   Palette:
   - Deep Black: #0a0a0a
   - Matte Gold: #c5a059
   - Charcoal Grey: #1f1f1f
   - Text Light: #d1d1d1
   - Text White: #ffffff
*/

:root {
    --bg-black: #0a0a0a;
    --bg-charcoal: #121212;
    --accent-gold: #c5a059;
    --border-grey: #1f1f1f;
    --text-main: #d1d1d1;
    --text-white: #ffffff;
    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Inter', sans-serif;
    --transition-slow: 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-medium: 0.5s ease-out;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-black);
    color: var(--text-main);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Film Grain */
.film-grain {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    pointer-events: none;
    opacity: 0.04;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    background-repeat: repeat;
}

/* Typography */
h1,
h2,
h3,
h4 {
    font-family: var(--font-serif);
    color: var(--text-white);
    font-weight: 400;
}

.gold-text {
    color: var(--accent-gold);
    font-style: italic;
    font-weight: 500;
}

/* Navigation */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 2rem 4rem;
    z-index: 100;
    background: linear-gradient(to bottom, rgba(10, 10, 10, 0.9) 0%, rgba(10, 10, 10, 0) 100%);
    transition: background 0.4s ease, padding 0.4s ease;
}

.main-nav.scrolled {
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    padding: 1.2rem 4rem;
    border-bottom: 1px solid var(--border-grey);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
}

.logo-link {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.logo-img {
    height: 45px;
    width: auto;
    display: block;
}

.menu {
    display: flex;
    gap: 3rem;
}

.menu-left {
    justify-content: flex-start;
    flex: 1;
}

.menu-right {
    justify-content: flex-end;
    flex: 1;
}

.menu a {
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: color 0.3s ease;
    position: relative;
}

.menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0%;
    height: 1px;
    background-color: var(--accent-gold);
    transition: width 0.3s ease;
}

.menu a:hover {
    color: var(--accent-gold);
}

.menu a:hover::after {
    width: 100%;
}

/* Buttons */
.btn-primary {
    display: inline-block;
    color: var(--accent-gold);
    text-decoration: none;
    border: 1px solid var(--accent-gold);
    padding: 1rem 3rem;
    font-size: 0.9rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    transition: all 0.4s ease;
    background: transparent;
    cursor: pointer;
    font-family: var(--font-sans);
}

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

/* Layout Utilities */
.section-padding {
    padding: 8rem 2rem;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

.container-split {
    display: flex;
    align-items: center;
    gap: 6rem;
}

.container-split.reverse {
    flex-direction: row-reverse;
}

.container-split>* {
    flex: 1;
}

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

/* Hero Section */
.hero {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-video {
    width: 100%;
    height: 110%;
    /* Slightly larger for parallax */
    object-fit: cover;
    filter: grayscale(100%) contrast(1.1) brightness(0.6);
    transform-origin: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, transparent 0%, var(--bg-black) 90%);
    box-shadow: inset 0 0 100px rgba(10, 10, 10, 0.8);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
}

.hero-title {
    font-size: 8rem;
    line-height: 1.1;
    margin-bottom: 3rem;
    letter-spacing: 2px;
}

.hero-subtitle {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    margin-bottom: 1rem;
    letter-spacing: 4px;
    text-transform: uppercase;
}

/* History Section */
.section-title {
    font-size: 3rem;
    margin-bottom: 2rem;
    color: var(--text-white);
}

.section-text {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: #999;
    max-width: 600px;
}

.fw-500 {
    font-weight: 500;
    color: var(--text-main);
}

.collage {
    position: relative;
    padding-bottom: 2rem;
}

.collage .img-1 {
    width: 85%;
    margin-left: auto;
    position: relative;
    z-index: 1;
}

.collage .img-2 {
    width: 75%;
    margin-top: -15%;
    position: relative;
    z-index: 2;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
    border: 1px solid rgba(197, 160, 89, 0.2);
    /* Subtle gold border to separate it */
}

.img-wrapper {
    overflow: hidden;
    position: relative;
    border: 1px solid var(--border-grey);
}

.img-vintage {
    width: 100%;
    height: auto;
    display: block;
    filter: sepia(0.2) grayscale(0.9) contrast(1.2);
    transition: transform var(--transition-slow);
}

.img-wrapper:hover .img-vintage {
    transform: scale(1.05);
}

/* Products Section */
.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 4rem;
}

.product-card {
    position: relative;
    cursor: pointer;
}

.product-img-container {
    position: relative;
    overflow: hidden;
    aspect-ratio: 3/4;
    margin-bottom: 1.5rem;
}

.product-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(80%) brightness(0.6);
    transition: filter var(--transition-medium), transform var(--transition-slow);
}

.product-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(to top, var(--bg-black), transparent);
    z-index: 1;
}

.product-card:hover .product-img {
    filter: grayscale(0%) brightness(1);
    transform: scale(1.03);
}

.product-title {
    font-size: 1.5rem;
    text-align: center;
    color: var(--text-main);
    transition: color 0.3s ease;
}

.product-card:hover .product-title {
    color: var(--accent-gold);
}

.gold-line {
    width: 60px;
    height: 1px;
    background-color: var(--accent-gold);
    margin: 0 auto;
}

.gold-line.left {
    margin: 0 0 2rem 0;
}

/* Infrastructure */
.dark-bg {
    background-color: var(--bg-charcoal);
    border-top: 1px solid var(--border-grey);
    border-bottom: 1px solid var(--border-grey);
}

.img-infra {
    width: 100%;
    height: 600px;
    object-fit: cover;
    filter: grayscale(100%) brightness(0.5);
    transition: filter var(--transition-slow);
}

.infra-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, transparent 0%, rgba(18, 18, 18, 0.8) 100%);
    pointer-events: none;
}

.img-wrapper:hover .img-infra {
    filter: grayscale(80%) brightness(0.8);
}

/* Engagement */
.engagement-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4rem;
    text-align: center;
}

.icon-gold {
    color: var(--accent-gold);
    margin-bottom: 1.5rem;
}

.engagement-title {
    font-size: 1.2rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-family: var(--font-sans);
    font-weight: 300;
}

/* Footer */
.footer {
    padding: 4rem 2rem;
    border-top: 1px solid var(--border-grey);
}

.footer-logo {
    height: 60px;
    margin: 0 auto 1.5rem auto;
    opacity: 0.7;
}

.contact-info {
    margin-bottom: 2rem;
    color: var(--text-main);
}

.contact-info p {
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.footer-text {
    font-size: 0.8rem;
    color: #555;
    letter-spacing: 1px;
}

/* Animations */
.reveal {
    opacity: 0;
}

.fade-up {
    transform: translateY(40px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in {
    transition: opacity var(--transition-slow);
}

.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-down {
    animation: fadeInDown 1s ease forwards;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 992px) {
    .container-split {
        flex-direction: column;
        gap: 3rem;
    }

    .container-split.reverse {
        flex-direction: column;
    }

    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 3rem;
    }

    .main-nav {
        padding: 1.5rem;
    }

    .menu {
        display: none;
        /* Add mobile menu later if needed */
    }

    .engagement-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .section-padding {
        padding: 5rem 1.5rem;
    }
}