/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { min-height: 100vh; }
img, svg { display: block; max-width: 100%; }
button { background: none; border: none; cursor: pointer; font: inherit; color: inherit; }
a { text-decoration: none; color: inherit; }

/* ── Utility ── */
.transition-grayscale { transition: filter 0.7s ease; }

/* ── Typography ── */
.section-label {
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}
.section-title {
    font-family: 'Cormorant Garamond', Georgia, serif;
    font-weight: 300;
    font-size: clamp(2rem, 4vw, 3.25rem);
    line-height: 1.1;
    color: #1B4332;
}

/* ── Header ── */
#site-header {
    background: rgba(250, 250, 247, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(27, 67, 50, 0.08);
}
#site-header.scrolled {
    box-shadow: 0 1px 20px rgba(27, 67, 50, 0.06);
}
.opacity-nav { opacity: 0.85; }
.opacity-nav:hover { opacity: 1; }

/* ── Mobile Menu ── */
#mobile-menu.open {
    pointer-events: all;
    opacity: 1;
}
#mobile-menu.open .mobile-nav-link {
    transform: translateY(0);
    opacity: 1;
}
#mobile-menu.open .mobile-nav-link:nth-child(1) { transition-delay: 0.05s; }
#mobile-menu.open .mobile-nav-link:nth-child(2) { transition-delay: 0.1s; }
#mobile-menu.open .mobile-nav-link:nth-child(3) { transition-delay: 0.15s; }
#mobile-menu.open .mobile-nav-link:nth-child(4) { transition-delay: 0.2s; }
#mobile-menu.open .mobile-nav-link:nth-child(5) { transition-delay: 0.25s; }

/* ── Hero Animations ── */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
.animate-fade-up { animation-name: fadeUp; animation-duration: 0.9s; animation-timing-function: cubic-bezier(0.16, 1, 0.3, 1); }
.animate-fade-in { animation-name: fadeIn; animation-duration: 1s; animation-timing-function: cubic-bezier(0.16, 1, 0.3, 1); }

/* ── Scroll Line ── */
.scroll-line {
    animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
    0%, 100% { opacity: 0.4; transform: scaleY(1); }
    50% { opacity: 1; transform: scaleY(1.2); }
}

/* ── Scroll Reveal ── */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .animate-fade-up, .animate-fade-in {
        animation: none;
        opacity: 1;
    }
    .scroll-line { animation: none; }
    html { scroll-behavior: auto; }
    img { transition: none; }
}

/* ── Nav Link Hover Underline ── */
.nav-link {
    position: relative;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: currentColor;
    transition: width 0.3s ease;
}
.nav-link:hover::after {
    width: 100%;
}

/* ── Image Hover ── */
.group:hover img {
    transform: scale(1.03);
}