/* =========================================================================
   a11y.css
   Accessibility primitives added in Public-Facing mode batch 1.
   Scope: visible focus ring, screen-reader utility, skip link,
   form error/required styling, disclosure menu affordances.

   Safe to include on every page — no token changes, no layout changes.
   ========================================================================= */

/* --- Visible focus for keyboard users (WCAG 2.4.7) --------------------- */
/* Use :focus-visible so mouse users don't see a ring on click.          */
:where(
  a, button, input, select, textarea, summary,
  [role="button"], [role="link"], [role="menuitem"],
  [role="tab"], [role="checkbox"], [role="radio"],
  [tabindex]:not([tabindex="-1"])
):focus { outline: none; } /* remove UA default; we replace it below */

:where(
  a, button, input, select, textarea, summary,
  [role="button"], [role="link"], [role="menuitem"],
  [role="tab"], [role="checkbox"], [role="radio"],
  [tabindex]:not([tabindex="-1"])
):focus-visible {
  outline: 2px solid var(--arc-teal, #00C4A1);
  outline-offset: 2px;
  border-radius: 3px;
}

/* Dark-surface focus uses teal on void — already 10:1, passes. */
/* Light-surface focus: use the -text token so ring has ≥3:1 vs parchment. */
[data-surface="light"] :focus-visible,
.contact-form :focus-visible,
.legal-body :focus-visible,
.pricing-compare :focus-visible,
.sec--parch :focus-visible {
  outline-color: var(--arc-teal-text, #006B56);
}

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

/* --- Skip link (WCAG 2.4.1) ------------------------------------------ */
.skip-link {
  position: absolute;
  top: 8px; left: 8px;
  z-index: 1000;
  padding: 10px 16px;
  background: var(--arc-teal, #00C4A1);
  color: var(--void, #080F1C);
  font-family: var(--font-mono), monospace;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 4px;
  transform: translateY(-140%);
  transition: transform 0.15s ease;
}
.skip-link:focus {
  transform: translateY(0);
  outline: 2px solid var(--parchment, #F0EDE8);
  outline-offset: 2px;
}

/* --- Form error affordances ------------------------------------------ */
.contact-form__input[aria-invalid="true"],
.contact-form__select[aria-invalid="true"],
.contact-form__textarea[aria-invalid="true"] {
  border-color: #B2480A;
  box-shadow: 0 0 0 3px rgba(178, 72, 10, 0.12);
}
.contact-form__error {
  display: flex; align-items: flex-start; gap: 8px;
  margin-top: 6px;
  font-family: var(--font-mono), monospace;
  font-size: 11.5px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: #B2480A;
}
.contact-form__error::before {
  content: '';
  flex-shrink: 0;
  width: 14px; height: 14px;
  margin-top: 1px;
  background: #B2480A;
  mask-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 14'><circle cx='7' cy='7' r='6' fill='none' stroke='black' stroke-width='1.4'/><path d='M7 4v4M7 10v.01' stroke='black' stroke-width='1.4' stroke-linecap='round'/></svg>");
  -webkit-mask-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 14'><circle cx='7' cy='7' r='6' fill='none' stroke='black' stroke-width='1.4'/><path d='M7 4v4M7 10v.01' stroke='black' stroke-width='1.4' stroke-linecap='round'/></svg>");
  mask-size: contain;
  -webkit-mask-size: contain;
  mask-repeat: no-repeat;
  -webkit-mask-repeat: no-repeat;
}

/* Form-level alert when the user tries to submit invalid */
.contact-form__alert {
  display: flex; align-items: flex-start; gap: 12px;
  margin-bottom: 20px;
  padding: 14px 18px;
  border: 1px solid rgba(178, 72, 10, 0.32);
  border-left: 2px solid #B2480A;
  background: rgba(178, 72, 10, 0.06);
  border-radius: 4px;
  color: var(--on-parch, #080F1C);
  font-size: 13.5px;
  line-height: 1.6;
}
.contact-form__alert strong {
  color: #B2480A;
  font-weight: 500;
}

/* Required-field legend above form */
.contact-form__legend {
  font-family: var(--font-mono), monospace;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--muted-parch, #5A6070);
  margin-bottom: 18px;
}
.contact-form__legend .req {
  color: var(--arc-teal-text, #006B56);
  margin-right: 4px;
}

/* Enable submit visually but never grey it out in a way that breaks 4.1.2 */
.contact-form__submit[aria-disabled="true"] {
  opacity: 0.7;
  cursor: not-allowed;
}
.contact-form__submit[aria-disabled="true"]:hover {
  background: var(--arc-teal, #00C4A1);
  transform: none;
  box-shadow: none;
}

/* --- Disclosure affordances for nav dropdowns ------------------------- */
/* Match visual behavior without ARIA menu-pattern overhead. */
.nav__drop-trigger[aria-expanded="true"] .nav__caret {
  transform: rotate(180deg);
}
.nav__caret { transition: transform 0.18s ease; }

/* --- Reduced motion (WCAG 2.3.3) -------------------------------------- */
/* Global safety net. Per-component overrides above this rule still win
   when they are more specific, but anything we forgot is caught here.  */
@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;
  }
}