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

body {
    overflow-x: hidden;
}

::selection {
    background: #8FB892;
    color: #1A2A23;
}

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

#site-header.scrolled {
    background: rgba(253, 252, 250, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 0 rgba(45, 74, 62, 0.08);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: #6A9B6E;
    transition: width 0.3s ease;
}

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

/* Mobile menu */
#mobile-menu.open {
    opacity: 1;
    pointer-events: all;
}

#mobile-menu.open .mobile-link {
    animation: fadeUp 0.4s ease forwards;
    opacity: 1;
}

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

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Hamburger animation */
.menu-bar {
    transition: transform 0.3s ease, opacity 0.3s ease, width 0.3s ease;
}

#menu-toggle.active .menu-bar:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
}

#menu-toggle.active .menu-bar:nth-child(2) {
    opacity: 0;
}

#menu-toggle.active .menu-bar:nth-child(3) {
    transform: translateY(-4px) rotate(-45deg);
    width: 1.25rem;
}

/* ── Hero Animations ── */
.hero-img {
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.hero-img:hover {
    transform: scale(1.02);
}

.hero-float {
    animation: float 4s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

/* ── Marquee ── */
.marquee-track {
    animation: marquee 30s linear infinite;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ── Scroll Reveal (progressive enhancement) ── */
@media (prefers-reduced-motion: no-preference) {
    .reveal-up {
        opacity: 1;
        transform: translateY(0);
        transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                    transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    .reveal-img {
        transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    .reveal-img:hover {
        transform: scale(1.03);
    }
}

/* ── Form Styles ── */
input:focus, select:focus, textarea:focus {
    outline: none;
}

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

::-webkit-scrollbar-track {
    background: #F5F0E8;
}

::-webkit-scrollbar-thumb {
    background: #BDD4BF;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #8FB892;
}

/* ── Focus visible ── */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 2px solid #4A7A4E;
    outline-offset: 2px;
    border-radius: 4px;
}