/* ─── Base & Typography ─── */
html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

::selection {
    background: rgba(212, 168, 83, 0.3);
    color: #f1f5f9;
}

/* ─── Scroll Reveal ─── */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal[data-reveal] {
    opacity: 0;
    transform: translateY(30px);
}

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

/* Stagger children */
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ─── Navbar ─── */
#navbar {
    background: transparent;
    transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}

#navbar.scrolled {
    background: rgba(7, 13, 26, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(212, 168, 83, 0.08), 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* ─── Mobile Menu ─── */
.mobile-link {
    display: block;
    padding: 0.5rem 0;
    font-size: 1.125rem;
    font-weight: 400;
    color: rgb(203 213 225);
    text-decoration: none;
    transition: color 0.3s ease;
}

.mobile-link:hover {
    color: rgb(212 168 83);
}

#mobileMenu {
    animation: slideDown 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ─── Gold accent line on section dividers ─── */
section::before {
    content: '';
    display: block;
}

/* ─── Image hover zoom wrapper ─── */
.group img {
    will-change: transform;
}

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

::-webkit-scrollbar-track {
    background: rgb(7 13 26);
}

::-webkit-scrollbar-thumb {
    background: rgb(30 41 59);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgb(51 65 85);
}

/* ─── Focus visible for accessibility ─── */
*:focus-visible {
    outline: 2px solid rgb(212 168 83);
    outline-offset: 2px;
}

/* ─── Button ripple effect (subtle) ─── */
button, a {
    -webkit-tap-highlight-color: transparent;
}

/* ─── Reduce motion ─── */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .reveal[data-reveal] {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .group img {
        transition: none;
    }

    .group:hover img {
        transform: none;
    }
}