/**
 * ═══════════════════════════════════════════════════════════════
 *  SILVON INTERNATIONAL — MASTER ANIMATION SYSTEM & COLOR THEME
 * ═══════════════════════════════════════════════════════════════
 *  Palette: DARK NAVY/BLACK (#080B10) + #A6A6A6 + WHITE + GOLD
 *  Performance-first, hardware-accelerated (transform & opacity)
 *  Reduced-motion accessible via media query
 */

:root {
    --silvon-light: #A6A6A6;
    --silvon-dark: #080B10;
    --silvon-deep: #0B0E14;
    --silvon-white: #FFFFFF;
    --silvon-text: #111318;
    --silvon-gold: #c8a96e;
    --silvon-gold-hover: #dab060;
    --silvon-border-dark: rgba(255, 255, 255, 0.12);
    --silvon-ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ═══ 1. SCROLL REVEAL SYSTEM ═══ */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s var(--silvon-ease), transform 0.7s var(--silvon-ease);
    will-change: opacity, transform;
}

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

/* Optional staggered delays for child cards */
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ═══ 2. NAVIGATION UNDERLINE ANIMATION ═══ */
.nav-link {
    position: relative;
    transition: color 0.25s var(--silvon-ease) !important;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--silvon-gold, #c8a96e);
    transform: scaleX(0);
    transform-origin: right center;
    transition: transform 0.3s var(--silvon-ease);
}

.nav-link:hover::after,
.nav-link.active::after {
    transform: scaleX(1);
    transform-origin: left center;
}

/* ═══ 3. BUTTON MICRO-ANIMATIONS ═══ */
.btn-main,
.nav-cta,
.btn-pill,
.card-cta {
    position: relative;
    transition: transform 0.25s var(--silvon-ease), background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, color 0.25s ease !important;
}

.btn-main:hover,
.nav-cta:hover {
    transform: translateY(-1px);
}

.btn-main svg,
.btn-main .btn-arrow,
.card-cta svg,
.card-cta .cta-arrow {
    transition: transform 0.25s var(--silvon-ease);
}

.btn-main:hover svg,
.btn-main:hover .btn-arrow,
.card-cta:hover svg,
.card-cta:hover .cta-arrow,
a:hover .cta-arrow {
    transform: translateX(4px);
}

/* ═══ 4. PRODUCT & PREVIEW CARD HOVER ANIMATIONS ═══ */
.preview-card,
.product-card,
.product-showcase-card {
    transition: transform 0.4s var(--silvon-ease), box-shadow 0.4s var(--silvon-ease), border-color 0.4s ease !important;
    overflow: hidden;
}

.preview-card:hover,
.product-card:hover,
.product-showcase-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.12);
}

.preview-card-img,
.product-card img,
.product-card-media img,
.card-bg-img {
    transition: transform 0.5s var(--silvon-ease);
}

.preview-card:hover .preview-card-img,
.product-card:hover img,
.product-card:hover .product-card-media img,
.division-card:hover .card-bg-img {
    transform: scale(1.04);
}

/* ═══ 5. GOLD ACCENT SECTION DIVIDER ═══ */
.accent-line-gold {
    display: block;
    height: 2px;
    width: 0;
    background: var(--silvon-gold, #c8a96e);
    transition: width 0.8s var(--silvon-ease);
}

.accent-line-gold.is-revealed {
    width: 80px;
}

/* ═══ 6. FORM INPUT TRANSITIONS ═══ */
input, textarea, select {
    transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease !important;
}

input:focus, textarea:focus, select:focus {
    border-color: var(--silvon-gold, #c8a96e) !important;
    box-shadow: 0 0 0 3px rgba(200, 169, 110, 0.15) !important;
}

/* ═══ 7. MOBILE MENU ANIMATIONS ═══ */
.mobile-drawer {
    transition: visibility 0.3s ease;
}

.drawer-backdrop {
    transition: opacity 0.3s var(--silvon-ease);
}

.drawer-content {
    transition: transform 0.35s var(--silvon-ease);
}

/* ═══ 8. REDUCED MOTION ACCESSIBILITY ═══ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }

    .reveal-on-scroll {
        opacity: 1 !important;
        transform: none !important;
    }

    .accent-line-gold {
        width: 80px !important;
    }
}