/* Custom styles for Dr. Huang D.D.S. website */

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

/* Animation keyframes */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translate3d(0, 40px, 0);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.8s ease-out forwards;
    opacity: 0;
}

.animation-delay-200 {
    animation-delay: 0.2s;
}

.animation-delay-400 {
    animation-delay: 0.4s;
}

.animation-delay-600 {
    animation-delay: 0.6s;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #F4EBE0;
}

::-webkit-scrollbar-thumb {
    background: #A0522D;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #8B4513;
}

/* Navigation active state */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: #A0522D;
    transition: width 0.3s ease;
}

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

/* Image hover effects */
img {
    max-width: 100%;
    height: auto;
}

/* Form focus styles */
input:focus,
textarea:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(160, 82, 45, 0.2);
}

/* Button hover effects */
button,
a {
    transition: all 0.3s ease;
}

/* Print styles */
@media print {
    nav,
    footer,
    button {
        display: none;
    }
    
    body {
        color: #000;
        background: #fff;
    }
}