/* Custom styles for Medical Skin Care */

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

/* Floating animation for stat cards */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

@keyframes float-delayed {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

.animate-float {
    animation: float 4s ease-in-out infinite;
}

.animate-float-delayed {
    animation: float-delayed 4s ease-in-out infinite;
    animation-delay: 1s;
}

/* Scroll line animation */
@keyframes scroll-line {
    0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
    50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
    51% { transform-origin: bottom; }
    100% { opacity: 0; transform: scaleY(0); transform-origin: bottom; }
}

.animate-scroll-line {
    animation: scroll-line 2s ease-in-out infinite;
}

/* Navbar scroll effect */
.navbar-scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

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

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #64748b;
}

/* Selection color */
::selection {
    background-color: #ccfbf1;
    color: #0f766e;
}

/* Fade-in animation for scroll reveals */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children */
.stagger-children > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.stagger-children.visible > *:nth-child(1) { transition-delay: 0.1s; }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.2s; }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.3s; }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.4s; }
.stagger-children.visible > *:nth-child(5) { transition-delay: 0.5s; }
.stagger-children.visible > *:nth-child(6) { transition-delay: 0.6s; }

.stagger-children.visible > * {
    opacity: 1;
    transform: translateY(0);
}

/* Mobile menu transition */
#mobile-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

#mobile-menu.open {
    max-height: 400px;
    padding: 0;
}

/* Focus visible for accessibility */
*:focus-visible {
    outline: 2px solid #14b8a6;
    outline-offset: 2px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .font-serif {
        font-size: clamp(2rem, 8vw, 3rem);
    }
}