/* ─── Base ─── */
*, *::before, *::after {
    box-sizing: border-box;
}

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

body {
    margin: 0;
    overflow-x: hidden;
}

::selection {
    background: #99f6e4;
    color: #134e4a;
}

/* ─── Scroll Reveal ─── */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
    }

    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ─── Navbar Scroll State ─── */
.navbar-scrolled {
    background: rgba(15, 118, 110, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.navbar-scrolled .menu-line {
    background: white;
}

/* ─── Mobile Menu Animation ─── */
#mobile-menu.open {
    animation: menuSlideIn 0.3s ease forwards;
}

@keyframes menuSlideIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ─── Image Hover ─── */
img {
    display: block;
    max-width: 100%;
}

/* ─── Focus Styles ─── */
a:focus-visible,
button:focus-visible {
    outline: 2px solid #14b8a6;
    outline-offset: 4px;
    border-radius: 2px;
}

/* ─── Smooth Scroll Offset ─── */
section[id] {
    scroll-margin-top: 80px;
}

/* ─── Thin scrollbar ─── */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #64748b;
}