/* Base & Reset */
*, *::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;
}

img {
    display: block;
    max-width: 100%;
}

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

/* Hero Animations - Above the fold, always visible */
.hero-anim {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.hero-img {
    opacity: 1;
    transform: scale(1);
    transition: transform 1.2s ease;
}

/* Scroll Reveal - Below the fold only, progressive enhancement */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
    
    .hero-anim {
        opacity: 0;
        transform: translateY(20px);
    }
    
    .hero-anim.animated {
        opacity: 1;
        transform: translateY(0);
    }
    
    .hero-img {
        opacity: 0;
        transform: scale(0.97);
    }
    
    .hero-img.animated {
        opacity: 1;
        transform: scale(1);
    }
}

/* Mobile Menu */
#mobileMenu.open {
    opacity: 1;
    pointer-events: all;
}

#mobileMenu.closed {
    opacity: 0;
    pointer-events: none;
}

/* Navbar scroll state */
.navbar-scrolled {
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
}

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

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

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Focus styles */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid #0f766e;
    outline-offset: 2px;
}

/* Image aspect ratios */
img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}