/* ============================================== */
/* VARIABLES GLOBALES & FONDATIONS */
/* ============================================== */
:root {
    /* Couleurs Principales */
    --color-gold: #d4af37;
    --color-gold-hover: #b8941f;
    --color-navy: #0f172a;
    --color-navy-light: #1e293b;
    --color-navy-lighter: #334155;
    
    /* Couleurs Neutres */
    --color-white: #ffffff;
    --color-slate-50: #f8fafc;
    --color-slate-100: #f1f5f9;
    --color-slate-200: #e2e8f0;
    --color-slate-300: #cbd5e1;
    --color-slate-500: #64748b;
    --color-slate-600: #475569;
    --color-slate-700: #334155;
    --color-slate-800: #1e293b;
    --color-slate-900: #0f172a;
    
    /* Échelle de Typographie */
    --font-montserrat: 'Montserrat', sans-serif;
    --font-inter: 'Inter', sans-serif;
    
    /* Espacements */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Transitions */
    --transition-fast: 0.3s ease-in-out;
    --transition-normal: 0.5s ease-in-out;
    --transition-slow: 0.8s cubic-bezier(0.5, 0, 0, 1);
    
    /* Ombres */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
}

/* ============================================== */
/* ARRIERE-PLANS OPTIMISEES */
/* ============================================== */

.hero-background {
    background-image: url('../assets/images/Fond acceuil.jpg');
    background-image: 
        image-set(
            url('../assets/images/webp/Fond acceuil.webp') type('image/webp'),
            url('../assets/images/Fond acceuil.jpg') type('image/jpeg')
        );
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

/* ============================================== */
/* STYLES DE BASE */
/* ============================================== */
body {
    font-family: var(--font-inter);
    background-color: var(--color-white);
    color: var(--color-slate-800);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ============================================== */
/* HEADER & NAVIGATION */
/* ============================================== */
#main-header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(203, 213, 225, 0.8);
}

#main-header.shadow-lg {
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
}

.logo img {
    height: 100%;
    width: 100%;
    object-fit: cover;
    filter: brightness(1.1) contrast(1.25) saturate(1.1);
}

/* Logo Container */
.logo > a > div:first-child {
    background-color: var(--color-slate-100);
    border: 2px solid var(--color-slate-300);
    border-radius: 0.5rem;
    padding: 0.125rem;
    transition: border-color 250ms var(--transition-fast);
}

.logo > a:hover > div:first-child {
    border-color: var(--color-gold);
}

/* ============================================== */
/* SECTIONS GÉNÉRALES */
/* ============================================== */
section {
    position: relative;
}

.section-title {
    font-family: var(--font-montserrat);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-gold);
    font-size: 0.75rem;
    line-height: 1;
}

.section-heading {
    font-family: var(--font-montserrat);
    font-weight: 700;
    font-size: 3rem;
    color: var(--color-slate-800);
}

/* ============================================== */
/* CARTES & CONTAINERS RÉUTILISABLES */
/* ============================================== */
.glass-card {
    background-color: var(--color-white);
    border: 1px solid rgba(203, 213, 225, 0.5);
    border-radius: 1rem;
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
}

.glass-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.card-with-top-border {
    padding: 2rem;
    border-radius: 0.75rem;
    background-color: var(--color-slate-50);
    border-top: 2px solid var(--color-gold);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.card-with-top-border:hover {
    border-top-color: var(--color-gold);
    transform: translateY(-8px);
}

.card-contact {
    padding: 2rem;
    border-radius: 0.75rem;
    background-color: var(--color-white);
    border: 1px solid var(--color-slate-200);
    box-shadow: var(--shadow-lg);
}

/* ============================================== */
/* ICÔNES & ICÔNES CIRCULAIRES */
/* ============================================== */
.icon-circle {
    width: 3.5rem;
    height: 3.5rem;
    background-color: var(--color-slate-100);
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-slate-300);
    transition: background-color var(--transition-fast);
}

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

.icon-circle svg {
    width: 1.75rem;
    height: 1.75rem;
    color: var(--color-gold);
    transition: color var(--transition-fast);
}

.icon-circle:hover svg {
    color: var(--color-white);
}

.icon-circle-gold {
    width: 3rem;
    height: 3rem;
    background-color: var(--color-gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.icon-circle-gold svg {
    width: 1.5rem;
    height: 1.5rem;
    color: var(--color-slate-800);
}

/* ============================================== */
/* BOUTONS */
/* ============================================== */
.btn-primary {
    background-color: var(--color-gold);
    color: var(--color-white);
    padding: 1rem 2rem;
    border-radius: 0.375rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.125em;
    font-size: 0.75rem;
    transition: all var(--transition-fast);
    box-shadow: 0 0 15px rgba(212, 175, 55, 0.2);
    cursor: pointer;
    border: none;
    display: inline-block;
}

.btn-primary:hover {
    background-color: var(--color-gold-hover);
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.4);
    transform: translateY(-2px);
}

.btn-secondary {
    border: 1px solid var(--color-slate-300);
    color: var(--color-slate-700);
    padding: 1rem 2rem;
    border-radius: 0.375rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.125em;
    font-size: 0.75rem;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.btn-secondary:hover {
    border-color: var(--color-gold);
    color: var(--color-gold);
    transform: translateY(-2px);
}

.btn-submit {
    width: 100%;
    background-color: var(--color-gold);
    color: var(--color-slate-800);
    font-weight: 700;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    border: none;
    transition: background-color var(--transition-fast);
    box-shadow: var(--shadow-lg);
    cursor: pointer;
}

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

/* ============================================== */
/* ANIMATIONS */
/* ============================================== */
/* Scroll Reveal */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all var(--transition-slow);
}

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

.delay-100 {
    transition-delay: 100ms;
}

.delay-200 {
    transition-delay: 200ms;
}

.delay-300 {
    transition-delay: 300ms;
}

/* Marquee Animation */
@keyframes marquee {
    0% {
        transform: translateX(0%);
    }
    100% {
        transform: translateX(-50%);
    }
}

.animate-marquee {
    display: inline-flex;
    white-space: nowrap;
    animation: marquee 40s linear infinite;
}

/* ============================================== */
/* HERO SECTION */
/* ============================================== */
.hero-bg {
    background: linear-gradient(135deg, rgba(241, 245, 249, 0.4), rgba(229, 231, 235, 0.3)), url('../assets/images/Fond acceuil.jpg');
    background: linear-gradient(135deg, rgba(241, 245, 249, 0.4), rgba(229, 231, 235, 0.3)), 
                image-set(
                    url('../assets/images/webp/Fond acceuil.webp') type('image/webp'),
                    url('../assets/images/Fond acceuil.jpg') type('image/jpeg')
                );
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.hero-quote {
    border-left: 2px solid var(--color-gold);
    padding-left: 1.5rem;
}

/* Grid Pattern Background */
.bg-grid-pattern {
    background-image:
        linear-gradient(90deg, rgba(203, 213, 225, 0.1) 1px, transparent 1px),
        linear-gradient(rgba(203, 213, 225, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
}

/* ============================================== */
/* FORMULAIRE DE CONTACT */
/* ============================================== */
.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-slate-300);
    border-radius: 0.5rem;
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    ring: 2px;
    ring-color: var(--color-gold);
    border-color: transparent;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-slate-600);
    margin-bottom: 0.5rem;
}

/* ============================================== */
/* MENU MOBILE */
/* ============================================== */
#mobile-menu {
    transition: max-height 0.4s ease-in-out, opacity 0.3s ease-in-out;
    max-height: 0;
    opacity: 0;
    overflow: hidden;
}

#mobile-menu.open {
    max-height: 400px;
    opacity: 1;
}

/* ============================================== */
/* FOOTER */
/* ============================================== */
footer {
    background-color: var(--color-slate-100);
    border-top: 1px solid var(--color-slate-300);
}

footer img {
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

footer img:hover {
    opacity: 1;
}

/* ============================================== */
/* UTILITAIRES */
/* ============================================== */
.text-gold {
    color: var(--color-gold);
}

.text-slate-gray {
    color: var(--color-slate-600);
}

.border-gold-top {
    border-top: 2px solid var(--color-gold);
}

.border-gold-left {
    border-left: 4px solid var(--color-gold);
    padding-left: 1.5rem;
}

.group-hover\:text-gold {
    transition: color var(--transition-fast);
}

.group:hover .group-hover\:text-gold {
    color: var(--color-gold);
}

/* ============================================== */
/* RESPONSIVE ADJUSTMENTS */
/* ============================================== */
@media (max-width: 768px) {
    .section-heading {
        font-size: 2rem;
    }
    
    .hidden-mobile {
        display: none;
    }
}