/**
 * Chess Academy — CSS Reset
 *
 * Modern reset with box-sizing, margins, font inheritance.
 */

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

html {
    font-size: 100%;
    -webkit-text-size-adjust: 100%;
    -moz-text-size-adjust: 100%;
    text-size-adjust: 100%;
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

body {
    font-family: var(--font-family);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
}

img,
picture,
video,
canvas,
svg {
    display: block;
    max-width: 100%;
    height: auto;
}

input,
button,
textarea,
select {
    font: inherit;
    color: inherit;
}

button {
    cursor: pointer;
    border: none;
    background: none;
}

a {
    color: var(--color-primary-500);
    text-decoration: none;
    transition: color var(--duration-fast) var(--ease-out);
}

a:hover {
    color: var(--color-primary-600);
}

a:focus-visible {
    outline: 2px solid var(--color-focus);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

ul, ol {
    list-style: none;
}

table {
    border-collapse: collapse;
    width: 100%;
}

/* Skip link for accessibility */
.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-4);
    z-index: var(--z-tooltip);
    padding: var(--space-2) var(--space-4);
    background: var(--color-primary-500);
    color: var(--color-text-inverse);
    border-radius: var(--radius-md);
    font-weight: var(--weight-semibold);
}

.skip-link:focus {
    top: var(--space-2);
}

/* Selection */
::selection {
    background: var(--color-selection);
    color: var(--color-text);
}