/* Custom styles for Dr. Boris Itskovich dermatology practice */

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

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: #fdf9f0;
}

::-webkit-scrollbar-thumb {
    background: #166534;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #15803d;
}

/* Selection color */
::selection {
    background: #166534;
    color: #fefdf8;
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Navbar scroll state */
nav.scrolled {
    background: rgba(254, 253, 248, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(22, 101, 52, 0.08);
}

nav.scrolled .menu-line {
    background: #166534;
}

/* Mobile menu animations */
.mobile-link {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
}

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

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

/* Service card hover lift */
.service-card {
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.service-card:hover {
    transform: translateY(-4px);
}

/* Procedure item hover */
.procedure-item {
    border-left: 2px solid transparent;
    padding-left: 0;
    margin-left: 0;
}

.procedure-item:hover {
    border-left-color: #166534;
}

/* Input focus animations */
input:focus,
textarea:focus {
    border-bottom-color: #166534 !important;
}

/* Button ripple effect */
button[type="submit"]:active {
    transform: scale(0.98);
}

/* Image hover zoom */
.procedure-item img,
#about img {
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

#about img:hover {
    transform: scale(1.02);
}

/* Gradient text (for hero italic words) */
.gradient-text {
    background: linear-gradient(135deg, #86efac 0%, #4ade80 50%, #22c55e 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

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

/* Fade in animation for scroll reveals */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll reveal classes - applied via JS */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
    }
    
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Stagger delays for grid items */
.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; }

/* Mobile menu button animation */
.menu-line {
    transition: transform 0.3s ease, opacity 0.3s ease;
}

body.menu-open .menu-line:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
}

body.menu-open .menu-line:nth-child(2) {
    opacity: 0;
}

body.menu-open .menu-line:nth-child(3) {
    transform: translateY(-4px) rotate(-45deg);
    width: 1.25rem;
}

/* Loading state for form */
button.loading {
    pointer-events: none;
    opacity: 0.7;
}

/* Focus visible for accessibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid #166534;
    outline-offset: 2px;
    border-radius: 4px;
}

/* Print styles */
@media print {
    nav,
    #contactForm,
    iframe {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
}