/*
 * CFH Accessibility — header trigger button + skip-link pair + modal dialog.
 * Replaces the old side-tab pattern (which read as accessibility-overlay-spam).
 * Three entry points:
 *   1. Header button (.cfh-a11y-trigger)
 *   2. Skip-links pair (.cfh-skiplinks)
 *   3. Footer link to /accessibility (in markup)
 */

/* ─── 1. HEADER TRIGGER BUTTON ─── */
.cfh-a11y-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--cfh-ink);
  border: 2px solid var(--cfh-ink);
  padding: 8px 14px;
  margin-left: var(--cfh-space-4);
  font-family: var(--cfh-font-mono);
  font-size: var(--cfh-fs-mono-s);
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background var(--cfh-dur-fast) var(--cfh-ease), color var(--cfh-dur-fast) var(--cfh-ease);
  white-space: nowrap;
}
.cfh-a11y-trigger:hover,
.cfh-a11y-trigger:focus-visible {
  background: var(--cfh-ink);
  color: var(--cfh-cream);
  outline: none;
}
.cfh-a11y-trigger svg { display: block; flex-shrink: 0; }
.cfh-a11y-trigger-label { display: inline-block; }

@media (max-width: 720px) {
  .cfh-a11y-trigger { padding: 8px 10px; }
  .cfh-a11y-trigger-label { display: none; } /* Icon-only on narrow screens */
}

/* ─── 2. SKIP-LINK PAIR — visible on tab focus, hidden otherwise ─── */
.cfh-skiplinks {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  display: flex;
  gap: 0;
}
.cfh-skiplink {
  position: absolute;
  left: -9999px;
  top: 8px;
  background: var(--cfh-ink);
  color: var(--cfh-cream);
  padding: 12px 18px;
  font-family: var(--cfh-font-mono);
  font-size: var(--cfh-fs-mono-m);
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
  text-decoration: none;
  border: 2px solid var(--cfh-magenta);
  cursor: pointer;
}
.cfh-skiplink:focus {
  left: 8px;
  outline: 3px solid var(--cfh-magenta);
  outline-offset: 2px;
}
.cfh-skiplink-a11y:focus { left: 200px; } /* Sit beside the first skip link */

/* ─── 3. MODAL DIALOG ─── */
.cfh-a11y-overlay {
  position: fixed;
  inset: 0;
  background: rgba(14, 14, 12, 0.55);
  z-index: 1000;
  backdrop-filter: blur(2px);
}
.cfh-a11y-overlay[hidden] { display: none; }

.cfh-a11y-dialog {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1001;
  background: var(--cfh-cream);
  color: var(--cfh-ink);
  width: min(560px, calc(100vw - 32px));
  max-height: calc(100vh - 64px);
  overflow-y: auto;
  padding: var(--cfh-space-6);
  border: 3px solid var(--cfh-ink);
  font-family: var(--cfh-font-body);
}
.cfh-a11y-dialog[hidden] { display: none; }

.cfh-a11y-dialog-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--cfh-space-4);
}
.cfh-a11y-dialog h2 {
  font-family: var(--cfh-font-display);
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 900;
  letter-spacing: -.015em;
  margin: 0;
  line-height: 1.05;
}
.cfh-a11y-close {
  background: transparent;
  border: 2px solid var(--cfh-ink);
  color: var(--cfh-ink);
  font-size: 24px;
  line-height: 1;
  padding: 4px 12px;
  cursor: pointer;
  font-weight: 700;
  font-family: var(--cfh-font-mono);
  transition: background var(--cfh-dur-fast) var(--cfh-ease), color var(--cfh-dur-fast) var(--cfh-ease);
}
.cfh-a11y-close:hover, .cfh-a11y-close:focus-visible {
  background: var(--cfh-ink);
  color: var(--cfh-cream);
  outline: none;
}

.cfh-a11y-intro {
  font-size: 14px;
  line-height: 1.55;
  color: var(--cfh-ink);
  opacity: .8;
  margin: 0 0 var(--cfh-space-5);
  padding: var(--cfh-space-3);
  background: var(--cfh-paper);
  border-left: 3px solid var(--cfh-magenta);
}
.cfh-a11y-intro a { color: var(--cfh-magenta); font-weight: 700; }

.cfh-a11y-row {
  padding: var(--cfh-space-4) 0;
  border-bottom: 1px solid var(--cfh-ink-25);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: var(--cfh-space-3);
}
.cfh-a11y-row:last-of-type { border-bottom: 0; }

.cfh-a11y-label {
  font-family: var(--cfh-font-mono);
  font-size: var(--cfh-fs-mono-m);
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--cfh-ink);
}

.cfh-a11y-buttons { display: flex; gap: 4px; }
.cfh-a11y-buttons button {
  background: transparent;
  color: var(--cfh-ink);
  border: 1.5px solid var(--cfh-ink-25);
  padding: 8px 14px;
  font-family: var(--cfh-font-mono);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
  transition: all var(--cfh-dur-fast) var(--cfh-ease);
}
.cfh-a11y-buttons button:hover { border-color: var(--cfh-magenta); color: var(--cfh-magenta); }
.cfh-a11y-buttons button[aria-pressed="true"] {
  background: var(--cfh-magenta);
  border-color: var(--cfh-magenta);
  color: var(--cfh-cream);
}

.cfh-a11y-actions {
  display: flex;
  flex-direction: column;
  gap: var(--cfh-space-3);
  margin-top: var(--cfh-space-5);
  padding-top: var(--cfh-space-5);
  border-top: 2px solid var(--cfh-ink);
}
.cfh-a11y-reset {
  background: transparent;
  color: var(--cfh-ink);
  border: 2px solid var(--cfh-ink);
  padding: 12px 18px;
  font-family: var(--cfh-font-mono);
  font-size: var(--cfh-fs-mono-m);
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  cursor: pointer;
}
.cfh-a11y-reset:hover, .cfh-a11y-reset:focus-visible {
  background: var(--cfh-ink);
  color: var(--cfh-cream);
  outline: none;
}
.cfh-a11y-statement-link {
  font-family: var(--cfh-font-mono);
  font-size: var(--cfh-fs-mono-s);
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--cfh-magenta);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-align: center;
}

body.cfh-a11y-locked { overflow: hidden; }