/* Base styles & custom properties */
:root {
    --gold-500: #d4af37;
    --gold-400: #f0c45b;
    --navy-900: #1a202c;
    --navy-950: #0d1117;
}

html {
    scroll-behavior: smooth;
}

body {
    overflow-x: hidden;
}

/* Scroll reveal animations — progressive enhancement only */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
    }
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Navbar scroll state */
.navbar-scrolled {
    background: rgba(13, 17, 23, 0.95) !important;
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    padding-top: 0.75rem !important;
    padding-bottom: 0.75rem !important;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--navy-900);
}
::-webkit-scrollbar-thumb {
    background: var(--gold-500);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--gold-400);
}

/* Selection color */
::selection {
    background: var(--gold-500);
    color: var(--navy-950);
}

/* Mobile menu transition */
#mobile-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease;
}

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

/* Smooth image loading */
img {
    transition: opacity 0.3s ease;
}
img[data-src] {
    opacity: 0;
}
img.loaded {
    opacity: 1;
}

/* Button focus styles */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 2px solid var(--gold-500);
    outline-offset: 2px;
    border-radius: 4px;
}