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

body {
    overflow-x: hidden;
}

::selection {
    background-color: rgba(13, 148, 136, 0.2);
    color: #0f172a;
}

/* === Navbar Scroll State === */
#navbar {
    background: transparent;
}

#navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06), 0 4px 20px rgba(0, 0, 0, 0.06);
}

.nav-text {
    color: #0f172a;
}

#navbar:not(.scrolled) .nav-text {
    color: #0f172a;
}

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

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

.menu-line {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#mobile-menu-btn[aria-expanded="true"] .menu-line:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
}

#mobile-menu-btn[aria-expanded="true"] .menu-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

#mobile-menu-btn[aria-expanded="true"] .menu-line:nth-child(3) {
    transform: translateY(-4px) rotate(-45deg);
}

/* === Scroll Reveal Animations === */
.reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

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

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
    }

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

/* === Focus Styles === */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid #0d9488;
    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: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 4px;
}

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

/* === Input Autofill === */
input:-webkit-autofill,
textarea:-webkit-autofill,
select:-webkit-autofill {
    -webkit-box-shadow: 0 0 0 30px white inset !important;
}

/* === Print Styles === */
@media print {
    #navbar,
    #mobile-menu-btn,
    .reveal {
        display: none !important;
    }

    body {
        color: #000;
        background: #fff;
    }
}