/**
 * accessibility.css
 *
 * Accessibility features — reduced motion, high contrast, focus management,
 * screen reader utilities, and skip navigation.
 * Extracted from base/variables.css for single-responsibility.
 */

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

    /* Reset duration variables to instant for reduced motion */
    :root {
        --duration-instant: 0ms;
        --duration-fast: 0ms;
        --duration-normal: 0ms;
        --duration-slow: 0ms;
        --duration-slower: 0ms;
        --transition-fast: 0ms linear;
        --transition-normal: 0ms linear;
    }

    /* Disable pressure overlays */
    .pressure-overlay {
        animation: none !important;
        opacity: 0 !important;
    }
}

/* ============ ACCESSIBILITY: HIGH CONTRAST MODE ============ */
@media (prefers-contrast: high) {
    :root {
        --border-subtle: rgba(255, 255, 255, 0.5);
        --border-light: rgba(255, 255, 255, 0.7);
        --border: rgba(255, 255, 255, 0.8);
        --text-muted: #d0d0d0;
    }

    .action-btn,
    .size-btn,
    .bet-size-btn,
    .game-btn {
        border-width: 2px !important;
    }
}

/* ============ ACCESSIBILITY: FOCUS VISIBLE ============ */
/* Global focus-visible styles for keyboard navigation */
:focus-visible {
    outline: 2px solid var(--accent-light, #7fe0b4);
    outline-offset: 2px;
}

/* Remove default focus ring for mouse users */
:focus:not(:focus-visible) {
    outline: none;
}

/* Screen reader only - visually hidden but accessible */
.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;
}

/* Button reset for div→button conversions (semantic HTML) */
button.collapsible-header,
button.hand-history-header {
    all: unset;
    display: flex;
    cursor: pointer;
    width: 100%;
    box-sizing: border-box;
}
/* Player portrait: minimal reset so .player-portrait base styles (border-radius, overflow, bg) are preserved */
button.player-portrait {
    appearance: none;
    border: none;
    padding: 0;
    margin: 0;
}

/* Skip link for keyboard navigation - hidden until focused */
.skip-link {
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%) translateY(-100%);
    padding: var(--space-3) var(--space-4);
    background: var(--bg-panel, #112a1f);
    border: 2px solid var(--accent, #4a9d7a);
    border-radius: var(--radius-md, 8px);
    color: var(--text-light, #e8e8ec);
    font-weight: var(--font-weight-semibold, 600);
    text-decoration: none;
    z-index: var(--z-max, 9999);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.15s ease-out, opacity 0.15s ease-out;
}

.skip-link:focus {
    transform: translateX(-50%) translateY(16px);
    opacity: 1;
    pointer-events: auto;
}