/* Base & Typography */
html {
    scroll-behavior: smooth;
}

body {
    overflow-x: hidden;
}

/* Scroll Reveal — progressive enhancement, hidden by default */
.scroll-reveal {
    opacity: 1;
    transform: none;
    transition: none;
}

@media (prefers-reduced-motion: no-preference) {
    .scroll-reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }
    .scroll-reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
    .scroll-reveal.revealed:nth-child(2) { transition-delay: 100ms; }
    .scroll-reveal.revealed:nth-child(3) { transition-delay: 200ms; }
    .scroll-reveal.revealed:nth-child(4) { transition-delay: 300ms; }
    .scroll-reveal.revealed:nth-child(5) { transition-delay: 400ms; }
    .scroll-reveal.revealed:nth-child(6) { transition-delay: 500ms; }
}

/* Navbar transition */
#navbar.scrolled {
    background: rgba(13, 13, 13, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #0d0d0d;
}
::-webkit-scrollbar-thumb {
    background: #2a2a2a;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #ff6b6b;
}

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

/* Mobile menu animation */
#mobile-menu {
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Button focus for accessibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid #ff6b6b;
    outline-offset: 2px;
}

/* Image loading */
img {
    image-rendering: auto;
}