/* ── Base & Typography ── */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 5rem;
}

body {
    font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
    font-family: 'DM Serif Display', Georgia, serif;
}

/* ── Scroll Reveal (progressive enhancement) ── */
@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);
    }

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

/* ── Header scroll state ── */
#site-header.scrolled {
    box-shadow: 0 1px 12px rgba(0, 0, 0, 0.06);
}

/* ── Mobile menu transitions ── */
#mobile-menu {
    animation: slideDown 0.25s ease-out;
}

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

/* ── Custom scrollbar ── */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #f0fdfa;
}
::-webkit-scrollbar-thumb {
    background: #99f6e4;
    border-radius: 999px;
}
::-webkit-scrollbar-thumb:hover {
    background: #5eead4;
}

/* ── Selection ── */
::selection {
    background: #99f6e4;
    color: #134e4a;
}

/* ── Focus visible ── */
:focus-visible {
    outline: 2px solid #14b8a6;
    outline-offset: 2px;
}

/* ── Image loading placeholder ── */
img {
    background-color: #f0fdfa;
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}