/* ─── Base & Utilities ─── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 5rem; }
body { overflow-x: hidden; }

/* ─── Header transition ─── */
#header.scrolled {
    background: rgba(254, 253, 251, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 20px rgba(27, 67, 50, 0.08);
}

/* ─── Mobile menu ─── */
#mobileMenu {
    animation: slideDown 0.25s ease-out;
}
@keyframes slideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ─── Float animation ─── */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-8px); }
}
.animate-float {
    animation: float 3.5s ease-in-out infinite;
}

/* ─── Scroll reveal ─── */
.reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
                transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.revealed {
    opacity: 1;
    transform: none;
}

/* Hidden initial state for reduced-motion-free environments */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(28px);
    }
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ─── Service card tilt on hover ─── */
.service-card {
    transform: translateY(0);
}
.service-card:hover {
    transform: translateY(-4px);
}

/* ─── Mobile link ─── */
.mobile-link {
    display: block;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(27, 67, 50, 0.08);
}
.mobile-link:last-child {
    border-bottom: none;
}

/* ─── Custom scrollbar ─── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #f5f0e6; }
::-webkit-scrollbar-thumb { background: #aad0b0; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #7fb888; }

/* ─── Focus visible ─── */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 2px solid #1B4332;
    outline-offset: 2px;
    border-radius: 4px;
}