/* ── Base / Reset ── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

::selection {
    background: #2bb896;
    color: #fff;
}

/* ── Scroll Reveal (progressive enhancement) ── */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(32px);
        transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 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; }
    .reveal-delay-4 { transition-delay: 0.4s; }
}

/* ── Navbar scroll state ── */
.navbar-scrolled {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(10, 22, 40, 0.08);
}

.navbar-scrolled .nav-link {
    color: #0a1628 !important;
}

.navbar-scrolled .logo-text {
    color: #0a1628 !important;
}

/* ── Mobile menu transitions ── */
#mobileMenu {
    pointer-events: none;
}

#mobileMenu.open {
    pointer-events: auto;
}

/* ── Button focus states ── */
button:focus-visible,
a:focus-visible {
    outline: 2px solid #2bb896;
    outline-offset: 2px;
    border-radius: 4px;
}

/* ── Smooth image loading ── */
img {
    display: block;
    max-width: 100%;
}

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

::-webkit-scrollbar-track {
    background: #f0fdf9;
}

::-webkit-scrollbar-thumb {
    background: #2bb896;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #1e9478;
}