/* ─── Base & Typography ─── */
html {
    scroll-behavior: smooth;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ─── Navbar ─── */
#navbar {
    background: rgba(255, 255, 255, 0.0);
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

#navbar.scrolled {
    background: rgba(255, 255, 255, 0.97);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.08);
}

.nav-text {
    color: #1e293b;
}

#navbar.scrolled .nav-text {
    color: #1e293b;
}

/* ─── Mobile Menu ─── */
#mobile-menu {
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mobile-link {
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease, color 0.2s ease;
}

.mobile-link:hover {
    border-bottom-color: #0d9488;
    color: #0d9488;
}

/* ─── Scroll Reveal ─── */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s cubic-bezier(0.22, 0.61, 0.36, 1), transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
    html {
        scroll-behavior: auto;
    }
}

/* ─── Buttons ─── */
button, a[role="button"] {
    cursor: pointer;
}

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

/* ─── Custom scrollbar ─── */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #64748b;
}

/* ─── Selection ─── */
::selection {
    background: #99f6e4;
    color: #134e4a;
}