/* ─── Base & Typography ─── */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

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

::selection {
    background-color: #134e4a;
    color: #f0fdfa;
}

/* ─── Navigation ─── */
#navbar {
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

#navbar.scrolled {
    border-bottom-color: #e2e8f0;
    box-shadow: 0 1px 12px rgba(0, 0, 0, 0.06);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: #134e4a;
    transition: width 0.25s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* ─── Scroll Reveal ─── */
.reveal-up,
.reveal-left,
.reveal-right {
    opacity: 1;
    transform: none;
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-up {
    transform: translateY(24px);
}

.reveal-left {
    transform: translateX(-24px);
}

.reveal-right {
    transform: translateX(24px);
}

.reveal-up.visible,
.reveal-left.visible,
.reveal-right.visible {
    opacity: 1;
    transform: none;
}

/* ─── Reduced Motion ─── */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    html {
        scroll-behavior: auto;
    }
    .reveal-up,
    .reveal-left,
    .reveal-right {
        opacity: 1;
        transform: none;
    }
}

/* ─── Mobile Menu ─── */
#mobile-menu {
    animation: slideDown 0.25s ease-out;
}

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

.mobile-link {
    display: block;
    padding: 0.5rem 0;
    border-bottom: 1px solid #f1f5f9;
}

.mobile-link:last-child {
    border-bottom: none;
}

/* ─── Service Card Hover ─── */
.service-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.service-card:hover {
    transform: translateY(-4px);
}

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

/* ─── Image Aspect Ratios ─── */
img {
    max-width: 100%;
    height: auto;
}