/* ═══════════════════════════════════════════════════════════════════
   Holdfast — Accessibility (WCAG 2.1 AA)
   ═══════════════════════════════════════════════════════════════════ */

/* Skip-to-content link — hidden until focused */
.skip-to-content {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    padding: 0.75rem 1.5rem;
    background: #22d3ee;
    color: #0a1628;
    font-weight: 700;
    font-size: 0.875rem;
    border-radius: 0 0 0.5rem 0.5rem;
    text-decoration: none;
    transition: top 0.15s ease;
}
.skip-to-content:focus {
    top: 0;
    outline: 3px solid var(--app-input-focus, #fff);
    outline-offset: 2px;
}

/* Focus-visible ring — 3:1 contrast minimum */
:focus-visible {
    outline: 3px solid var(--app-input-focus, #22d3ee);
    outline-offset: 2px;
    border-radius: 4px;
}
/* Remove outline on mouse clicks but keep for keyboard */
:focus:not(:focus-visible) {
    outline: none;
}

/* Ensure buttons and links have visible focus */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
    outline: 3px solid var(--app-input-focus, #22d3ee);
    outline-offset: 2px;
}

/* prefers-reduced-motion — disable animations */
@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;
    }
    .animate-pulse {
        animation: none !important;
    }
    .typing-dot {
        animation: none !important;
        opacity: 0.5;
    }
}

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

/* aria-live region styling — invisible but announced */
[aria-live]:empty {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
}

/* High contrast mode support */
@media (forced-colors: active) {
    .bg-accent,
    .bg-green-600,
    .bg-red-600,
    .bg-amber-500,
    .bg-orange-600 {
        forced-color-adjust: none;
    }
}

/* Ensure minimum touch target size (44x44px) for mobile */
@media (pointer: coarse) {
    button,
    a,
    [role="button"],
    input[type="checkbox"],
    input[type="radio"] {
        min-height: 44px;
        min-width: 44px;
    }
}