/* Custom styles for Internal Medicine website */

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #0f2035;
}

::-webkit-scrollbar-thumb {
    background: #1e4d78;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #2dd4a0;
}

/* Navbar scroll state */
.navbar-scrolled #navbar {
    background: rgba(10, 22, 40, 0.95) !important;
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.navbar-scrolled .navbar-text {
    color: #ffffff !important;
}

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

.service-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #2dd4a0, #0fb884);
    transform: scaleX(0);
    transition: transform 0.4s ease;
    transform-origin: left;
}

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

/* Scroll reveal animations - progressive enhancement */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.revealed {
    opacity: 0;
    transform: translateY(30px);
}

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.6s ease, transform 0.6s ease;
    }

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

/* Staggered reveal delays */
.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; }

/* Pulse animation for hero badge */
@keyframes pulse-subtle {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.animate-pulse {
    animation: pulse-subtle 2s ease-in-out infinite;
}

/* Gradient text utility */
.text-gradient-mint {
    background: linear-gradient(135deg, #5fe8bc, #2dd4a0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Focus styles for accessibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid #2dd4a0;
    outline-offset: 2px;
}

/* Mobile menu transition */
#mobileMenu {
    transition: max-height 0.3s ease, opacity 0.3s ease;
}

#mobileMenu.hidden {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
}

#mobileMenu:not(.hidden) {
    max-height: 400px;
    opacity: 1;
}

/* Hero gradient animation */
@keyframes gradient-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Ensure images don't overflow */
img {
    max-width: 100%;
    height: auto;
}