/* Configuration de base */
html {
    scroll-behavior: smooth;
}

body {
    background-color: #fafaf9; /* stone-50 */
    color: #1c1917; /* stone-900 */
    overflow-x: hidden;
    font-family: 'Inter', sans-serif;
}

h1, h2, h3, h4, .font-serif {
    font-family: 'Playfair Display', serif;
}

/* Texture Noise de fond */
.bg-noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.4;
    background-image: url("data:image/svg+xml,%3Csvg viewBox=%220 0 200 200%22 xmlns=%22http://www.w3.org/2000/svg%22%3E%3Cfilter id=%22noiseFilter%22%3E%3CfeTurbulence type=%22fractalNoise%22 baseFrequency=%220.65%22 numOctaves=%223%22 stitchTiles=%22stitch%22/%3E%3C/filter%3E%3Crect width=%22100%25%22 height=%22100%25%22 filter=%22url(%23noiseFilter)%22 opacity=%220.05%22/%3E%3C/svg%3E");
}

/* Effet Glassmorphism */
.glass-panel {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

/* --- ANIMATIONS SCROLL REVEAL (Cœur du dynamisme) --- */

.reveal-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), transform 1s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
}

.reveal-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-on-scroll[data-delay="0"] { transition-delay: 0ms; }
.reveal-on-scroll[data-delay="100"] { transition-delay: 100ms; }
.reveal-on-scroll[data-delay="150"] { transition-delay: 150ms; }
.reveal-on-scroll[data-delay="200"] { transition-delay: 200ms; }
.reveal-on-scroll[data-delay="300"] { transition-delay: 300ms; }
.reveal-on-scroll[data-delay="400"] { transition-delay: 400ms; }
.reveal-on-scroll[data-delay="500"] { transition-delay: 500ms; }

/* --- ACCORDÉON --- */
.accordion-content {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.5s cubic-bezier(0.16, 1, 0.3, 1), margin-bottom 0.5s ease;
    overflow: hidden;
    opacity: 0; 
}

.accordion-content > div {
    overflow: hidden;
}

.accordion-item.active .accordion-content {
    grid-template-rows: 1fr;
    opacity: 1;
    margin-bottom: 1.5rem;
}

.accordion-icon {
    transition: transform 0.3s ease;
}

.accordion-item.active .accordion-icon {
    transform: rotate(180deg);
}

/* --- MENU MOBILE --- */
#mobile-menu {
    transition: opacity 0.3s ease, transform 0.3s ease;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
}

#mobile-menu.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}