/* Base & Utilities */
html {
    scroll-behavior: smooth;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Scroll Reveal (progressive enhancement — content is visible by default) */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }
    
    .reveal.visible {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Gold Button */
.btn-gold {
    background: linear-gradient(135deg, #f7c83a 0%, #d4a017 100%);
    color: #1e3a5f;
    transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.btn-gold:hover {
    background: linear-gradient(135deg, #f9d862 0%, #e6b420 100%);
    transform: translateY(-2px);
    box-shadow: 0 12px 24px -8px rgba(212, 160, 23, 0.45);
}

/* Navbar */
#navbar {
    background: transparent;
}

#navbar.scrolled {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06), 0 8px 24px -8px rgba(30, 58, 95, 0.08);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: #d4a017;
    border-radius: 1px;
    transition: width 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

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

/* Mobile Menu */
#mobile-menu {
    animation: slideDown 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mobile-link {
    display: block;
}

/* Product Cards */
.product-card {
    transform: translateY(0);
}

/* Process Cards */
.process-card {
    transform: translateY(0);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f5f5f4;
}

::-webkit-scrollbar-thumb {
    background: #c5d5eb;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #9bb7df;
}

/* Selection */
::selection {
    background: rgba(212, 160, 23, 0.2);
    color: #1e3a5f;
}

/* Focus visible */
:focus-visible {
    outline: 2px solid #d4a017;
    outline-offset: 2px;
}