/* ============================================
   UTMB Health Neurology — Clear Lake Campus
   Custom Styles
   ============================================ */

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

body {
    overflow-x: hidden;
}

/* Selection color */
::selection {
    background: #971537;
    color: #fff;
}

/* ============================================
   Navbar
   ============================================ */
#navbar {
    background: transparent;
    transition: background 0.3s ease, box-shadow 0.3s ease, backdrop-filter 0.3s ease;
}

#navbar.scrolled {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 20px rgba(151, 21, 55, 0.08);
}

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

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

.mobile-link {
    transition: background 0.2s ease, color 0.2s ease;
}

/* ============================================
   Hero
   ============================================ */
#hero {
    position: relative;
}

/* ============================================
   Service cards
   ============================================ */
.service-card {
    will-change: transform;
}

/* ============================================
   Scroll reveal (progressive enhancement)
   ============================================ */
@media (prefers-reduced-motion: no-preference) {
    .js-loaded .reveal-hidden {
        opacity: 0;
        transform: translateY(32px);
    }
}

/* Always visible fallback for no-JS or reduced motion */
@media (prefers-reduced-motion: reduce) {
    .reveal-hidden {
        opacity: 1 !important;
        transform: none !important;
    }
}

/* ============================================
   Form
   ============================================ */
input:focus,
select:focus,
textarea:focus {
    box-shadow: 0 0 0 3px rgba(151, 21, 55, 0.1);
}

/* ============================================
   Buttons — subtle bounce on hover
   ============================================ */
button:hover,
a:hover {
    transform: translateY(0);
}

a:hover {
    transform: translateY(-0.5px);
}

/* ============================================
   Utility: focus visible
   ============================================ */
:focus-visible {
    outline: 2px solid #971537;
    outline-offset: 2px;
    border-radius: 4px;
}

/* ============================================
   Responsive tweaks
   ============================================ */
@media (max-width: 640px) {
    .font-serif {
        line-height: 1.15;
    }
}