html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    overflow-x: hidden;
    color: var(--text-primary);
    background: var(--surface-void);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -2;
    background:
        radial-gradient(circle at 70% 10%, rgba(112, 220, 233, 0.11), transparent 32rem),
        radial-gradient(circle at 18% 28%, rgba(120, 168, 255, 0.10), transparent 28rem),
        linear-gradient(180deg, var(--surface-black), var(--surface-void));
}

a {
    color: inherit;
}

img,
canvas {
    max-width: 100%;
}

.skip-link {
    position: fixed;
    left: 16px;
    top: 12px;
    z-index: 100;
    transform: translateY(-140%);
    padding: 10px 14px;
    color: var(--surface-black);
    background: var(--text-primary);
    border-radius: 6px;
    transition: transform var(--duration-fast) var(--ease-out);
}

.skip-link:focus {
    transform: translateY(0);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

:focus-visible {
    outline: 2px solid var(--accent-cyan);
    outline-offset: 4px;
}

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