/* Base styles and custom utilities */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    overflow-x: hidden;
}

/* Scroll reveal base state - always visible by default for accessibility */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Progressive enhancement: only animate if user prefers motion */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
    }
    
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile menu transitions */
#mobile-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
    opacity: 0;
}

#mobile-menu.open {
    max-height: 400px;
    opacity: 1;
}

#mobile-menu.open .menu-line:first-child {
    transform: rotate(45deg) translate(5px, 5px);
}

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

#mobile-menu.open .menu-line:last-child {
    width: 24px;
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Navbar scroll state */
.navbar-scrolled {
    background: rgba(13, 13, 13, 0.95) !important;
    backdrop-filter: blur(20px) !important;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

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

::-webkit-scrollbar-track {
    background: #141414;
}

::-webkit-scrollbar-thumb {
    background: #2f2f2f;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #FF6B4A;
}

/* Selection color */
::selection {
    background: rgba(255, 107, 74, 0.3);
    color: #fff;
}

/* Focus visible styles */
:focus-visible {
    outline: 2px solid #FF6B4A;
    outline-offset: 2px;
}

/* Image placeholder fallback */
img {
    max-width: 100%;
    height: auto;
}

/* Prevent layout shift on images */
img[loading="lazy"] {
    contain: layout;
}

/* Smooth image loading */
img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

/* Print styles */
@media print {
    .reveal {
        opacity: 1 !important;
        transform: none !important;
    }
    
    header, footer, .no-print {
        display: none;
    }
}