/**
 * SoberBase — WCAG 2.1 AA Accessibility Stylesheet
 * Loaded globally on all pages.
 * Addresses: focus visibility, skip links, landmark styles, motion.
 */

/* ============================================================
   1. SKIP-TO-CONTENT LINK
   Visually hidden until focused; must be first focusable item.
   ============================================================ */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  z-index: 99999;
  padding: 0.75rem 1.25rem;
  background: #1c1917;
  color: #4ade80;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid #4ade80;
  border-radius: 0 0 8px 0;
  white-space: nowrap;
  transition: top 0.1s;
}
.skip-link:focus {
  top: 0;
  outline: 3px solid #4ade80;
  outline-offset: 2px;
}

/* ============================================================
   1c. SCREEN READER ONLY UTILITY
   Visually hidden but announced by screen readers.
   Industry-standard .sr-only pattern.
   ============================================================ */
.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;
}
/* Focusable variant — visible when focused (e.g., skip links that aren't .skip-link) */
.sr-only-focusable:not(:focus):not(:focus-within) {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================
   2. GLOBAL FOCUS-VISIBLE STYLES
   Replace all bare `outline: none` resets with accessible focus.
   We use :focus-visible so mouse clicks don't show focus rings.
   ============================================================ */
*:focus {
  outline: none; /* remove browser default; we handle it below */
}

*:focus-visible {
  outline: 3px solid #4ade80 !important;
  outline-offset: 3px !important;
  border-radius: 4px;
}

/* Dark-bg variant: for elements on very dark surfaces */
.focus-dark:focus-visible {
  outline-color: #22c55e !important;
}

/* Inputs — slightly tighter ring so it fits the field */
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid #4ade80 !important;
  outline-offset: 0 !important;
  border-radius: 6px;
}

/* Buttons on light backgrounds (landing pages, marketing) */
button:focus-visible,
a:focus-visible,
[role="button"]:focus-visible,
[role="tab"]:focus-visible,
[role="menuitem"]:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid #22c55e !important;
  outline-offset: 3px !important;
  border-radius: 4px;
}

/* Skip link target — suppress focus ring on the programmatically-focused anchor */
#main-content:focus,
#main-content:focus-visible {
  outline: none !important;
}

/* ============================================================
   3. REDUCE-MOTION PREFERENCE
   Respect users who prefer 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;
  }
}

/* ============================================================
   4. HIGH-CONTRAST SUPPORT
   Basic support for Windows High Contrast mode.
   ============================================================ */
@media (forced-colors: active) {
  .skip-link {
    forced-color-adjust: none;
    background: ButtonFace;
    color: ButtonText;
    border-color: ButtonText;
  }
}