/* Reset & Base */
body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* Custom scrollbar */
::-webkit-scrollbar { 
    width: 10px; 
}
::-webkit-scrollbar-track { 
    background: #f8fafc; 
}
::-webkit-scrollbar-thumb { 
    background: #cbd5e1; 
    border-radius: 5px;
    border: 2px solid #f8fafc;
}
::-webkit-scrollbar-thumb:hover { 
    background: #94a3b8; 
}

/* Header Glassmorphism States */
#main-header.scrolled, 
#main-header.mobile-open {
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
    box-shadow: 0 4px 20px -5px rgba(0, 0, 0, 0.05);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
}

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

/* Reveal on Scroll Core */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1), transform 0.8s cubic-bezier(0.25, 1, 0.5, 1);
    will-change: transform, opacity;
}

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

/* Infinite Scroll Masking */
.animate-scroll {
    display: flex;
    width: max-content;
}

/* Helper for smooth transitions on all interactive elements */
a, button, input, textarea {
    transition: all 0.2s ease-in-out;
}