/* =====================================================
   ACCESSIBILITY & FOCUS STATES
   ===================================================== */

/* Skip to main content link for screen readers */
.skip-to-main {
  position: absolute;
  left: -9999px;
  z-index: var(--z-toast);
  padding: var(--md) var(--lg);
  background: var(--green-dark);
  color: var(--white);
  text-decoration: none;
  border-radius: var(--radius);
}

.skip-to-main:focus {
  left: var(--md);
  top: var(--md);
}

/* Visible focus indicator for interactive elements */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible,
[role="button"]:focus-visible,
[role="menuitem"]:focus-visible,
.dropdown-toggle:focus-visible {
  outline: 3px solid var(--border-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-focus);
}

/* Enhanced focus for form inputs */
input[type="text"]:focus-visible,
input[type="email"]:focus-visible,
input[type="tel"]:focus-visible,
input[type="url"]:focus-visible,
input[type="number"]:focus-visible,
input[type="date"]:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: var(--shadow-focus);
}

/* Focus states for navigation links */
.main-nav a:focus-visible {
  outline: 3px solid var(--border-focus);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

/* Focus states for buttons */
.cta:focus-visible,
.btn-primary:focus-visible,
button[type="submit"]:focus-visible,
.btn-submit:focus-visible,
.register-btn:focus-visible {
  outline: 3px solid var(--border-focus);
  outline-offset: 3px;
  box-shadow: var(--shadow-focus), var(--shadow-md);
}

/* Focus states for modal close buttons */
.modal-close:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.8);
  outline-offset: 2px;
  background: rgba(255, 255, 255, 0.4);
}

/* Focus states for carousel controls */
[data-carousel-prev]:focus-visible,
[data-carousel-next]:focus-visible {
  outline: 3px solid var(--border-focus);
  outline-offset: 2px;
  box-shadow: var(--shadow-focus);
}

/* Carousel cards focus states */
.carousel-lightbox-trigger:focus-visible {
  outline: 3px solid var(--border-focus);
  outline-offset: 3px;
  box-shadow: var(--shadow-focus), var(--shadow);
}

/* Focus states for dropdown menus */
.dropdown-menu a:focus-visible {
  background: var(--bg);
  outline: 3px solid var(--border-focus);
  outline-offset: -3px;
}

/* Focus states for package/size selection buttons */
.package-buttons button:focus-visible,
.size-buttons button:focus-visible,
.supporter-category-buttons button:focus-visible {
  outline: 3px solid var(--border-focus);
  outline-offset: 2px;
  box-shadow: var(--shadow-focus), 0 6px 16px rgba(0, 0, 0, .12);
}

/* Focus states for filter buttons */
.filter-btn:focus-visible,
.speaker-filter-btn:focus-visible,
[data-filter]:focus-visible {
  outline: 3px solid var(--border-focus);
  outline-offset: 2px;
  box-shadow: var(--shadow-focus);
}

/* Menu toggle (hamburger) focus state */
.menu-toggle:focus-visible {
  outline: 3px solid var(--border-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Checkbox and radio focus states */
input[type="checkbox"]:focus-visible,
input[type="radio"]:focus-visible {
  outline: 3px solid var(--border-focus);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  a:focus-visible,
  button:focus-visible,
  input:focus-visible,
  textarea:focus-visible,
  select:focus-visible,
  [tabindex]:focus-visible {
    outline-width: 4px;
    outline-offset: 3px;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition-duration: 0.01ms !important;
  }

  *:focus-visible {
    transition: none;
  }

  /* Ensure modals are visible on mobile without transforms */
  .modal-content {
    transform: none !important;
  }
}

/* Ensure keyboard navigation is visible only, not on mouse click */
*:focus:not(:focus-visible) {
  outline: none;
  box-shadow: none;
}