/* ============================================
   Internal Medicine of Southeast Georgia
   Custom Styles
   ============================================ */

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

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

/* --- Navbar transitions --- */
#navbar.scrolled {
    background: rgba(10, 20, 25, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

/* --- Mobile menu --- */
#mobileMenu.open {
    opacity: 1;
    pointer-events: auto;
}

.mobile-link {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease, color 0.3s ease;
}

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

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

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

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #059669, #10b981, #34d399);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.service-card:hover::before {
    transform: scaleX(1);
}

/* --- Scroll reveal (progressive enhancement) --- */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                    transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    .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; }
}

/* --- Back to top --- */
#backToTop.visible {
    opacity: 1;
    pointer-events: auto;
}

#backToTop:hover {
    transform: translateY(-2px);
}

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

/* --- Selection color --- */
::selection {
    background: rgba(16, 185, 129, 0.2);
    color: #0f1f2e;
}

/* --- Smooth image loading --- */
img {
    display: block;
    max-width: 100%;
}

/* --- Print styles --- */
@media print {
    #navbar, #backToTop, iframe {
        display: none;
    }
    body {
        color: #000;
        background: #fff;
    }
}