*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

::selection {
    background-color: #a7f3d0;
    color: #0f172a;
}

/* Scroll reveal base styles - visible by default for progressive enhancement */
.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);
}

/* Navbar scroll state */
.navbar-scrolled {
    background-color: rgba(248, 250, 252, 0.95) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(15, 23, 42, 0.06);
}

/* Mobile menu transitions */
.mobile-menu-open {
    opacity: 1 !important;
    pointer-events: all !important;
}

.menu-open .menu-line:first-child {
    transform: rotate(45deg) translate(3px, 3px);
}

.menu-open .menu-line:last-child {
    transform: rotate(-45deg) translate(3px, -3px);
}

/* Subtle image hover */
img {
    transition: transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* Focus styles for accessibility */
a:focus-visible,
button:focus-visible {
    outline: 2px solid #0f172a;
    outline-offset: 4px;
    border-radius: 4px;
}

/* Smooth section transitions */
section {
    position: relative;
}

/* Thin decorative lines */
.divider-line {
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(15, 23, 42, 0.1), transparent);
}

/* 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;
    }
    
    html {
        scroll-behavior: auto;
    }
    
    .reveal {
        opacity: 1;
        transform: none;
    }
}

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

::-webkit-scrollbar-track {
    background: #f8fafc;
}

::-webkit-scrollbar-thumb {
    background: #0f172a;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #6ee7b7;
}