/* ==========================================================================
   Primitives — page shell, grid, controls
   Each chapter owns its own vertical space, so the rhythm can vary.
   ========================================================================== */

.page {
  display: flex;
  flex-direction: column;
  width: 100%;
  overflow-x: clip;
}

[id] {
  scroll-margin-top: calc(var(--header-height) + 1rem);
}

#main {
  display: flex;
  flex-direction: column;
  width: 100%;
}

/* —— Horizontal frame —— */
.shell {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--page-pad);
}

/* —— Chapters —— */
.chapter {
  position: relative;
  padding-block: var(--space-l);
}

.chapter--tight {
  padding-block: var(--space-m);
}

.chapter--open {
  padding-block: var(--space-xl) var(--space-l);
}

.chapter--cool {
  background: var(--color-accent-secondary);
}

.chapter--accent {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.chapter--dark {
  background: var(--color-graphite);
  color: var(--color-on-dark);
}

.chapter--rule {
  border-top: 1px solid var(--color-line);
}

/* —— 12 column grid —— */
.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gutter);
}

/* —— Controls — Glamport-like: soft secondary + solid primary, 8px radius —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 3rem;
  padding: 0.75rem 1.5rem;
  border: 1px solid transparent;
  border-radius: 0.5rem;
  font-weight: 400;
  font-size: var(--fs-body);
  line-height: 1;
  white-space: nowrap;
  overflow: hidden;
  position: relative;
  transition:
    background-color 20ms linear,
    color 20ms linear,
    border-color 20ms linear,
    opacity var(--duration-fast) var(--ease-out);
}

.btn__arrow {
  display: block;
  transition: transform var(--duration-base) var(--ease-out);
}

/* Footnote marker on brands that need a legal disclaimer */
.btn__mark {
  margin-left: -0.4rem;
  font-size: 0.7em;
  line-height: 1;
  opacity: 0.75;
  transform: translateY(-0.35em);
}

.btn:hover .btn__arrow {
  transform: translateX(0.25rem);
}

/* Solid — primary CTA */
.btn--fill {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.btn--fill:hover {
  filter: brightness(0.96);
}

.btn--fill:active {
  filter: brightness(0.9);
}

.btn--ink {
  background: var(--color-ink);
  color: var(--color-on-dark);
}

.btn--ink:hover {
  background: var(--color-accent);
  color: var(--color-accent-ink);
  filter: none;
}

/* Soft translucent — secondary CTA (Glamport __secondary) */
.btn--soft {
  color: var(--color-ink);
  background: color-mix(in srgb, var(--color-accent) 22%, transparent);
  -webkit-backdrop-filter: blur(1rem);
  backdrop-filter: blur(1rem);
}

.btn--soft:hover {
  background: color-mix(in srgb, var(--color-accent) 34%, transparent);
}

.btn--soft:active {
  background: color-mix(in srgb, var(--color-accent) 44%, transparent);
}

/* Over dark media — Glamport __secondaryWhite */
.chapter--dark .btn--soft,
.hero .btn--soft {
  color: var(--color-on-dark);
  background: color-mix(in srgb, var(--color-on-dark) 18%, transparent);
}

.chapter--dark .btn--soft:hover,
.hero .btn--soft:hover {
  background: color-mix(in srgb, var(--color-on-dark) 28%, transparent);
}

.chapter--accent .btn--soft {
  color: var(--color-accent-ink);
  background: color-mix(in srgb, var(--color-accent-ink) 14%, transparent);
}

/* Outline — quieter tertiary */
.btn--line {
  background: transparent;
  color: inherit;
  border-color: var(--color-line-strong);
}

.btn--line:hover {
  background: var(--color-ink);
  color: var(--color-on-dark);
  border-color: var(--color-ink);
}

.chapter--dark .btn--line {
  border-color: var(--color-line-on-dark);
}

.chapter--dark .btn--line:hover {
  background: var(--color-on-dark);
  color: var(--color-graphite);
  border-color: var(--color-on-dark);
}

/* Pair of CTAs */
.btn-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

/* —— Quiet secondary action: a line of text, not a second button —— */
.link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding-block: 0.35rem;
  font-size: 1rem;
  font-weight: 500;
  line-height: 1;
  color: inherit;
  border-bottom: 1px solid var(--color-line-strong);
  transition:
    border-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out);
}

.link:hover {
  border-color: currentColor;
}

.link__arrow {
  transition: transform var(--duration-base) var(--ease-out);
}

.link:hover .link__arrow {
  transform: translateX(0.25rem);
}

.chapter--dark .link {
  border-color: var(--color-line-on-dark);
}

/* —— Icon button: square, hairline, no fill —— */
.ctrl {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-ui);
  color: inherit;
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1;
  transition:
    background-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out);
}

.ctrl:hover {
  background: var(--color-ink);
  border-color: var(--color-ink);
  color: var(--color-on-dark);
}

/* —— Utilities —— */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--page-pad);
  z-index: 1000;
  padding: 0.75rem 1.25rem;
  background: var(--color-ink);
  color: var(--color-on-dark);
  font-size: var(--fs-meta);
  font-weight: 500;
  transition: top var(--duration-fast) var(--ease-out);
}

.skip-link:focus {
  top: 1rem;
}

/* —— Reveal disabled: content shows immediately —— */
[data-reveal] {
  opacity: 1;
  transform: none;
}

/* —— Cookie consent —— */
.cookie-consent {
  position: fixed;
  z-index: 1200;
  left: var(--page-pad);
  right: var(--page-pad);
  bottom: max(1rem, env(safe-area-inset-bottom));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 2rem;
  max-width: 44rem;
  padding: 1.25rem;
  background: var(--color-graphite);
  color: var(--color-on-dark);
}

.cookie-consent[hidden] {
  display: none;
}

.cookie-consent__text {
  flex: 1 1 auto;
  min-width: 0;
  font-size: var(--fs-meta);
  line-height: 1.5;
  color: var(--color-muted-on-dark);
}

.cookie-consent__text a {
  color: var(--color-on-dark);
  border-bottom: 1px solid var(--color-line-on-dark);
}

.cookie-consent__actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.cookie-consent .btn {
  min-height: 2.5rem;
  padding: 0.6rem 1.1rem;
  font-size: var(--fs-meta);
}

.cookie-consent .btn--soft {
  color: var(--color-on-dark);
  background: color-mix(in srgb, var(--color-on-dark) 18%, transparent);
}

.cookie-consent .btn--soft:hover {
  background: color-mix(in srgb, var(--color-on-dark) 28%, transparent);
}

@media (max-width: 40rem) {
  .cookie-consent {
    flex-direction: column;
    align-items: stretch;
  }

  .cookie-consent__actions .btn {
    flex: 1 1 0;
    justify-content: center;
  }
}