/* ===== Custom Styles for Richard Merritt Medical & Health ===== */

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

/* ===== Scroll Reveal (Progressive Enhancement) ===== */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }
    .reveal-delay-4 { transition-delay: 0.4s; }
    .reveal-delay-5 { transition-delay: 0.5s; }
    .reveal-delay-6 { transition-delay: 0.6s; }
}

/* Fallback: content always visible if JS disabled or reduced-motion */
@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
    }
}

/* ===== Navigation ===== */
.nav-text {
    transition: color 0.3s ease;
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: #5EEAD4;
    transition: width 0.3s ease;
}

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

/* Navbar scroll state */
.navbar-scrolled {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(10, 22, 40, 0.06);
}

.navbar-scrolled .nav-text {
    color: #0A1628;
}

.navbar-scrolled .nav-link {
    color: #2f457f;
}

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

/* ===== Service Cards ===== */
.service-card {
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, #5EEAD4, #36c9a8);
    opacity: 0;
    transition: opacity 0.5s ease;
}

.service-card:hover::before {
    opacity: 1;
}

/* ===== Mobile Menu ===== */
#mobile-menu {
    left: 0;
    right: 0;
}

.mobile-link {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
}

#mobile-menu.open .mobile-link {
    opacity: 1;
    transform: translateY(0);
}

#mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 0.1s; }
#mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 0.15s; }
#mobile-menu.open .mobile-link:nth-child(3) { transition-delay: 0.2s; }
#mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 0.25s; }
#mobile-menu.open .mobile-link:nth-child(5) { transition-delay: 0.3s; }
#mobile-menu.open .mobile-link:nth-child(6) { transition-delay: 0.35s; }

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

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

/* ===== Responsive ===== */
@media (max-width: 767px) {
    html {
        font-size: 15px;
    }

    #hero h1 {
        font-size: 3rem;
    }

    .service-card {
        padding: 1.5rem !important;
    }

    section[id] {
        scroll-margin-top: 70px;
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    #hero h1 {
        font-size: 3.5rem;
    }
}

@media (min-width: 1024px) {
    #hero h1 {
        font-size: clamp(3rem, 5vw, 5.5rem);
    }
}

/* ===== Selection ===== */
::selection {
    background: rgba(94, 234, 212, 0.25);
    color: #0A1628;
}

/* ===== Focus Visible ===== */
:focus-visible {
    outline: 2px solid #5EEAD4;
    outline-offset: 2px;
}

/* ===== Subtle Image Hover ===== */
img {
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}