/* =============================================================================
   Cookie consent — first-visit banner, per-category settings modal, the toggle
   switch and the "Cookie settings" button injected into the footer.

   Every element here is built in JavaScript by js/consent.js (`el()` helper),
   so these class names are that file's contract. Consent *behaviour* — cookie
   name and format, CONSENT_VERSION, the 12-month max-age, the category model
   and the tracker ids — is frozen (contracts.md §6); only presentation lives
   in this file.

   docs/components/cookie-consent-banner.md, elevation.md, motion.md.
   ============================================================================= */

/* ===================================
   Banner — a bottom sheet over a scrim.
   Before W3.4 the open/close transition referenced --transition-normal, which
   the app never defined: the banner appeared instantly. It now animates.
   =================================== */
.cookie-banner {
  position: fixed;
  inset: 0;
  z-index: var(--z-dialog);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  background-color: var(--color-scrim);
  backdrop-filter: blur(var(--space-1));
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-moderate) var(--ease-standard),
              visibility var(--duration-moderate) var(--ease-standard);
}

.cookie-banner--visible {
  opacity: 1;
  visibility: visible;
}

.cookie-banner__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  margin: var(--space-5);
  padding: var(--card-padding);
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(100%);
  transition: transform var(--duration-moderate) var(--ease-standard);
}

.cookie-banner--visible .cookie-banner__content {
  transform: translateY(0);
}

.cookie-banner__title {
  margin: 0;
  font-size: 1.125rem;
  line-height: 140%;
  font-weight: 700;
  color: var(--color-primary);
}

.cookie-banner p {
  margin: 0;
  font-size: 1rem;
  line-height: 160%;
  color: var(--color-text-gray);
}

.cookie-banner a {
  color: var(--color-division-brand);
  text-decoration: underline;
  transition: color var(--duration-fast) var(--ease-standard);
}

.cookie-banner a:hover {
  color: var(--color-division-brand-hover);
}

.cookie-banner__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  justify-content: flex-end;
}

.cookie-banner__actions .btn {
  min-width: 120px;
}

/* Tertiary "Customise" action — a text button, not a .btn (see js/consent.js).
   Pushed to the far end of the row so accept/reject stay paired. */
.cookie-banner__customise {
  margin-right: auto;
  padding: var(--space-2) 0;
  background-color: transparent;
  border: none;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: underline;
  cursor: pointer;
  transition: color var(--duration-fast) var(--ease-standard);
}

.cookie-banner__customise:hover {
  color: var(--color-division-brand);
}

@media (max-width: 600px) {
  .cookie-banner__content {
    margin: 0;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
  }

  .cookie-banner__actions {
    flex-direction: column-reverse;
    align-items: stretch;
  }

  .cookie-banner__actions .btn {
    width: 100%;
  }

  .cookie-banner__customise {
    margin-right: 0;
  }
}

/* ==========================================
   Settings modal — the same dialog language as css/components/dialog.css
   ========================================== */
.cookie-settings {
  position: fixed;
  inset: 0;
  z-index: var(--z-dialog);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  background-color: var(--color-scrim);
  backdrop-filter: blur(var(--space-1));
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-moderate) var(--ease-standard),
              visibility var(--duration-moderate) var(--ease-standard);
}

.cookie-settings--visible {
  opacity: 1;
  visibility: visible;
}

.cookie-settings__content {
  width: 100%;
  max-width: 560px;
  max-height: 85vh;
  overflow-y: auto;
  padding: var(--card-padding);
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-card-hover);
  transform: scale(0.9);
  transition: transform var(--duration-moderate) var(--ease-standard);
}

.cookie-settings--visible .cookie-settings__content {
  transform: scale(1);
}

.cookie-settings__title {
  margin: 0 0 var(--space-3);
  font-size: 1.125rem;
  line-height: 140%;
  font-weight: 700;
  color: var(--color-primary);
}

.cookie-settings__intro {
  margin: 0 0 var(--space-5);
  font-size: 1rem;
  line-height: 160%;
  color: var(--color-text-gray);
}

.cookie-settings__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.cookie-settings__category {
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: var(--space-4);
}

.cookie-settings__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.cookie-settings__label {
  font-size: 1rem;
  line-height: 140%;
  font-weight: 600;
  color: var(--color-primary);
}

.cookie-settings__desc {
  margin: var(--space-2) 0 0;
  font-size: 0.875rem;
  line-height: 160%;
  color: var(--color-text-gray);
}

.cookie-settings__actions {
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
  margin-top: var(--space-6);
}

/* ------------------------------------------
   Toggle switch — a custom control, so it owns its focus ring: the native
   input is transparent and the visible surface is the slider.
   ------------------------------------------ */
.cookie-switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}

.cookie-switch input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.cookie-switch__slider {
  position: absolute;
  inset: 0;
  background-color: var(--color-border);
  border-radius: var(--border-radius-pill);
  cursor: pointer;
  transition: background-color var(--duration-fast) var(--ease-standard);
}

.cookie-switch__slider::before {
  content: '';
  position: absolute;
  height: 18px;
  width: 18px;
  left: 3px;
  top: 3px;
  background-color: var(--color-white);
  border-radius: 50%;
  transition: transform var(--duration-base) var(--ease-standard);
}

.cookie-switch input:checked + .cookie-switch__slider {
  background-color: var(--color-accent-cyan-dark);
}

.cookie-switch input:checked + .cookie-switch__slider::before {
  transform: translateX(20px);
}

.cookie-switch input:focus-visible + .cookie-switch__slider {
  outline: 2px solid var(--focus-ring, var(--color-primary));
  outline-offset: 2px;
}

/* The Necessary category is locked, so its input is disabled. */
.cookie-switch input:disabled,
.cookie-switch input:disabled + .cookie-switch__slider {
  cursor: not-allowed;
}

.cookie-switch input:disabled + .cookie-switch__slider {
  opacity: 0.6;
}

/* ------------------------------------------
   Footer "Cookie settings" button, injected into .footer__bottom.
   Matches footer.css's link treatment (white → accent on hover) without
   depending on it.
   ------------------------------------------ */
/* consent.js appends this button into .footer .footer__bottom, which rides on
   the footer's legal-links column — so it is styled as one more legal link
   (footer.css § Aside, typographyFooterLink). */
.footer__cookie-settings {
  display: inline-block;
  margin: 0;
  padding: var(--space-1) var(--space-4);
  background-color: transparent;
  border: none;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 140%;
  letter-spacing: 0.01em;
  color: var(--color-white);
  text-align: right;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: color var(--duration-fast) var(--ease-standard);
}

.footer__cookie-settings:hover,
.footer__cookie-settings:focus-visible {
  color: var(--color-accent);
}

@media (max-width: 900px) {
  .footer__cookie-settings {
    padding-inline: 0;
    text-align: left;
  }
}

@media (max-width: 600px) {
  .cookie-settings__actions {
    flex-direction: column-reverse;
  }

  .cookie-settings__actions .btn {
    width: 100%;
  }
}