/* ── Base ── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { margin: 0; overflow-x: hidden; }

/* ── Navigation ── */
#nav {
    background: transparent;
    transition: background 0.4s ease, box-shadow 0.4s ease, padding 0.4s ease;
}
#nav.scrolled {
    background: rgba(10, 31, 63, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(143, 212, 168, 0.08);
}
.nav-link { position: relative; }
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: currentColor;
    transition: width 0.3s ease;
}
.nav-link:hover::after { width: 100%; }

/* ── Mobile Menu ── */
#mobile-menu.open { opacity: 1 !important; pointer-events: all !important; }
#mobile-menu .mobile-link { transform: translateY(20px); opacity: 0; transition: all 0.4s ease; }
#mobile-menu.open .mobile-link { transform: translateY(0); opacity: 1; }
#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; }

/* ── Hamburger ── */
#menu-btn[aria-expanded="true"] .line:nth-child(1) { transform: translateY(5px) rotate(45deg); }
#menu-btn[aria-expanded="true"] .line:nth-child(2) { opacity: 0; width: 0; }
#menu-btn[aria-expanded="true"] .line:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* ── Hero Animations ── */
.hero-eyebrow { animation: slide-up 0.8s ease forwards; }
.hero-title { animation: slide-up 0.8s 0.15s ease forwards; opacity: 0; }
.hero-subtitle { animation: slide-up 0.8s 0.3s ease forwards; opacity: 0; }
.hero-ctas { animation: slide-up 0.8s 0.45s ease forwards; opacity: 0; }
.hero-image { animation: zoom-in 1.2s 0.2s ease forwards; }

@keyframes slide-up {
    from { opacity: 0; transform: translateY(30px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes zoom-in {
    from { opacity: 0; transform: scale(1.1); }
    to   { opacity: 1; transform: scale(1); }
}

/* ── Scroll Reveal (progressive enhancement) ── */
@media (prefers-reduced-motion: no-preference) {
    .reveal-up {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .reveal-up.revealed {
        opacity: 1;
        transform: translateY(0);
    }
    .reveal-left {
        opacity: 0;
        transform: translateX(-30px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .reveal-left.revealed {
        opacity: 1;
        transform: translateX(0);
    }
    .reveal-right {
        opacity: 0;
        transform: translateX(30px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .reveal-right.revealed {
        opacity: 1;
        transform: translateX(0);
    }
    .divider-line {
        animation: line-grow 1s ease forwards;
    }
}

@keyframes line-grow {
    from { width: 0; }
    to   { width: 100%; }
}

/* ── Focus ── */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
    outline: 2px solid #5BBF82;
    outline-offset: 2px;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #F2FBF7; }
::-webkit-scrollbar-thumb { background: #C3EBCF; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #8FD4A8; }