/* ─── Base & Reset ─── */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

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

img {
    display: block;
    max-width: 100%;
}

::selection {
    background: rgba(212, 165, 116, 0.3);
    color: #0D3B3E;
}

/* ─── Scroll Reveal (progressive enhancement) ─── */
@media (prefers-reduced-motion: no-preference) {
    .reveal-up,
    .reveal-left,
    .reveal-right {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .reveal-up {
        animation: revealUp 0.8s ease forwards;
    }

    .reveal-left {
        animation: revealLeft 0.8s ease forwards;
    }

    .reveal-right {
        animation: revealRight 0.8s ease forwards;
    }

    @keyframes revealUp {
        from {
            opacity: 0;
            transform: translateY(30px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    @keyframes revealLeft {
        from {
            opacity: 0;
            transform: translateX(-30px);
        }
        to {
            opacity: 1;
            transform: translateX(0);
        }
    }

    @keyframes revealRight {
        from {
            opacity: 0;
            transform: translateX(30px);
        }
        to {
            opacity: 1;
            transform: translateX(0);
        }
    }

    /* Staggered delays for grid items */
    .reveal-up:nth-child(2) { animation-delay: 0.1s; }
    .reveal-up:nth-child(3) { animation-delay: 0.2s; }
    .reveal-up:nth-child(4) { animation-delay: 0.3s; }
    .reveal-up:nth-child(5) { animation-delay: 0.4s; }
}

/* Fallback: ensure content is visible even without JS */
@media (prefers-reduced-motion: reduce) {
    .reveal-up,
    .reveal-left,
    .reveal-right {
        opacity: 1;
        transform: none;
    }
}

/* JS-driven reveal for scroll-triggered animations */
.js-enabled .reveal-up,
.js-enabled .reveal-left,
.js-enabled .reveal-right {
    opacity: 0;
}

.js-enabled .reveal-up.revealed,
.js-enabled .reveal-left.revealed,
.js-enabled .reveal-right.revealed {
    opacity: 1;
    transform: none;
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.js-enabled .reveal-up.revealed {
    transform: translateY(0);
}

.js-enabled .reveal-left.revealed {
    transform: translateX(0);
}

.js-enabled .reveal-right.revealed {
    transform: translateX(0);
}

/* ─── Navbar Transition ─── */
#navbar.scrolled {
    background: rgba(13, 59, 62, 0.97);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: #D4A574;
    transition: width 0.3s ease;
}

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

/* ─── Menu Item Hover ─── */
#menu li {
    border-bottom: 1px solid rgba(184, 191, 201, 0.3);
    padding-bottom: 5px;
}

#menu li:last-child {
    border-bottom: none;
}

/* ─── Mobile Menu ─── */
.mobile-link {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

#mobile-menu.open .mobile-link {
    opacity: 1;
    transform: translateY(0);
}

#mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 0.05s; }
#mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 0.1s; }
#mobile-menu.open .mobile-link:nth-child(3) { transition-delay: 0.15s; }
#mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 0.2s; }
#mobile-menu.open .mobile-link:nth-child(5) { transition-delay: 0.25s; }

/* ─── Focus Styles ─── */
a:focus-visible,
button:focus-visible {
    outline: 2px solid #D4A574;
    outline-offset: 4px;
    border-radius: 2px;
}

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

::-webkit-scrollbar-track {
    background: #2A3039;
}

::-webkit-scrollbar-thumb {
    background: #3F4856;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #515C6E;
}

/* ─── Responsive Adjustments ─── */
@media (max-width: 767px) {
    html {
        scroll-padding-top: 70px;
    }
}