/*
 * Component-level styles. Patterns reusable across templates.
 * Each component is BEM-ish (.block, .block__elem, .block--modifier).
 * No hex values — only token references.
 */

/* ============ Button ============ */

.btn {
  --btn-bg: var(--brand);
  --btn-fg: var(--brand-on);
  --btn-border: var(--brand);

  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  letter-spacing: 0;
  line-height: 1;
  text-decoration: none;
  transition: background-color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out);
  cursor: pointer;
  white-space: nowrap;
}

.btn:hover {
  --btn-bg: var(--brand-hover);
  --btn-border: var(--brand-hover);
  color: var(--btn-fg);
}

.btn:active { transform: translateY(1px); }

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  --btn-border: var(--border-strong);
}

.btn--ghost:hover {
  --btn-bg: var(--bg-muted);
  --btn-border: var(--ink);
  --btn-fg: var(--ink);
}

.btn--accent {
  --btn-bg: var(--accent);
  --btn-fg: var(--accent-on);
  --btn-border: var(--accent);
}

.btn--accent:hover {
  --btn-bg: var(--accent-hover);
  --btn-border: var(--accent-hover);
}

.btn .icon { width: 1em; height: 1em; }

/* ============ Link with arrow ============ */

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--link);
  text-decoration: none;
  font-weight: var(--weight-medium);
}

.link-arrow::after {
  content: "→";
  display: inline-block;
  transition: transform var(--duration-base) var(--ease-out);
}

.link-arrow:hover::after { transform: translateX(0.25em); }

/* ============ Header ============ */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(12px) saturate(160%);
  -webkit-backdrop-filter: blur(12px) saturate(160%);
  border-bottom: 1px solid transparent;
  transition: background-color var(--duration-base) var(--ease-out),
              border-color var(--duration-base) var(--ease-out);
}

.site-header[data-scrolled="true"] {
  border-bottom-color: var(--border);
}

.site-header__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-6);
  padding-block: var(--space-4);
}

.site-header__logo {
  grid-column: 1;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: var(--weight-semibold);
  color: var(--ink);
  text-decoration: none;
  font-size: var(--text-base);
  letter-spacing: -0.01em;
}

.site-header__logo-mark {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-sm);
  background: var(--brand);
  display: grid;
  place-items: center;
  color: var(--brand-on);
  font-weight: var(--weight-bold);
  font-size: var(--text-sm);
  letter-spacing: 0;
}

.site-header__logo-img {
  display: block;
  height: 2.5rem;
  width: auto;
  max-width: 11rem;
  object-fit: contain;
  /* Source PNG carries an opaque white background. Multiply collapses white
     pixels against the cream surface so the mark sits flush, not in a card. */
  mix-blend-mode: multiply;
}

.site-header__nav {
  grid-column: 2;
  display: none;
  justify-self: center;
}

@media (min-width: 64rem) {
  .site-header__nav { display: flex; gap: var(--space-1); }
}

.site-header__nav-link {
  padding: var(--space-2) var(--space-4);
  color: var(--ink-soft);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  border-radius: var(--radius-full);
  transition: background-color var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
}

.site-header__nav-link:hover {
  background: var(--bg-muted);
  color: var(--ink);
}

.site-header__nav-link[aria-current="page"] {
  background: var(--bg-muted);
  color: var(--ink);
}

/* ---- Dropdown (desktop) ---- */
.site-header__nav-item.has-submenu {
  position: relative;
}

.site-header__nav-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: transparent;
  border: 0;
  cursor: pointer;
  font: inherit;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--ink-soft);
}

.site-header__nav-caret {
  transition: transform var(--duration-fast) var(--ease-out);
}

.site-header__nav-trigger[aria-expanded="true"] .site-header__nav-caret {
  transform: rotate(180deg);
}

.site-header__nav-trigger[aria-expanded="true"] {
  background: var(--bg-muted);
  color: var(--ink);
}

.site-header__submenu {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 50%;
  transform: translateX(-50%) translateY(-4px);
  min-width: 22rem;
  padding: var(--space-3);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 16px 40px -12px rgb(0 0 0 / 0.18), 0 4px 12px -4px rgb(0 0 0 / 0.08);
  display: grid;
  gap: 0.125rem;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out),
              visibility 0s linear var(--duration-fast);
  z-index: var(--z-dropdown, 50);
}

/* Invisible bridge so cursor can cross the gap between trigger and panel
   without breaking :hover. Sits inside the panel, covers the 0.5rem gap. */
.site-header__submenu::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: -0.75rem;
  height: 0.75rem;
}

.site-header__nav-item.has-submenu[data-open="true"] .site-header__submenu,
.site-header__nav-item.has-submenu:hover .site-header__submenu,
.site-header__nav-item.has-submenu:focus-within .site-header__submenu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
  transition-delay: 0s;
}

.site-header__submenu-link {
  display: grid;
  gap: 0.125rem;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--ink);
  transition: background-color var(--duration-fast) var(--ease-out);
}

.site-header__submenu-link:hover,
.site-header__submenu-link:focus-visible {
  background: var(--bg-muted);
}

.site-header__submenu-title {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--ink);
}

.site-header__submenu-desc {
  font-size: var(--text-xs);
  color: var(--ink-soft);
  line-height: 1.4;
}

.site-header__actions {
  grid-column: 3;
  justify-self: end;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.site-header__action-btn {
  display: inline-grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-full);
  color: var(--ink-soft);
  background: transparent;
  border: 1px solid transparent;
  transition: background-color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
}

.site-header__action-btn:hover {
  background: var(--bg-muted);
  color: var(--ink);
}

.site-header__cta {
  display: none;
}

@media (min-width: 48rem) {
  .site-header__cta { display: inline-flex; }
}

/* ============ Mobile menu ============ */

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  padding: var(--space-6);
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-out);
}

.mobile-menu[data-open="true"] {
  transform: translateX(0);
}

@media (min-width: 64rem) {
  .mobile-menu { display: none; }
}

.mobile-menu__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block-end: var(--space-6);
  border-bottom: 1px solid var(--border);
}

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
  margin-block: var(--space-6);
  flex: 1;
}

.mobile-menu__nav-link {
  display: block;
  padding: var(--space-4) 0;
  font-size: var(--text-2xl);
  font-weight: var(--weight-medium);
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  letter-spacing: -0.01em;
}

.mobile-menu__nav-link:hover {
  color: var(--brand);
}

.mobile-menu__group { border-bottom: 1px solid var(--border); }

.mobile-menu__group-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  cursor: pointer;
  border-bottom: 0;
}

.mobile-menu__group-summary::-webkit-details-marker { display: none; }

.mobile-menu__group-caret {
  transition: transform var(--duration-fast) var(--ease-out);
  color: var(--ink-soft);
}

.mobile-menu__group[open] .mobile-menu__group-caret {
  transform: rotate(180deg);
}

.mobile-menu__sublist {
  display: flex;
  flex-direction: column;
  padding-block-end: var(--space-3);
  padding-inline-start: var(--space-4);
}

.mobile-menu__sublink {
  display: block;
  padding: var(--space-3) 0;
  font-size: var(--text-lg);
  font-weight: var(--weight-medium);
  color: var(--ink-soft);
  text-decoration: none;
}

.mobile-menu__sublink:hover {
  color: var(--brand);
}

.mobile-menu__footer {
  padding-block-start: var(--space-6);
  border-top: 1px solid var(--border);
}

body[data-menu-open="true"] { overflow: hidden; }

/* ============ Footer ============ */

.site-footer {
  background: var(--bg-inverse);
  color: var(--ink-inverse);
  margin-top: var(--space-24);
}

.site-footer__top {
  padding-block: var(--space-16);
  display: grid;
  gap: var(--space-12);
  grid-template-columns: 1fr;
}

@media (min-width: 48rem) {
  .site-footer__top {
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: var(--space-10);
  }
}

.site-footer__brand h2 {
  color: var(--ink-inverse);
  font-size: var(--text-2xl);
  font-weight: var(--weight-medium);
  line-height: var(--leading-snug);
  letter-spacing: -0.02em;
  margin-block-end: var(--space-4);
  max-width: 26ch;
}

.site-footer__brand p {
  color: var(--ink-inverse-muted);
  font-size: var(--text-sm);
}

.site-footer__col-title {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--ink-inverse-muted);
  margin-block-end: var(--space-4);
}

.site-footer__col ul { display: flex; flex-direction: column; gap: var(--space-2); }

.site-footer__link {
  color: var(--ink-inverse);
  text-decoration: none;
  font-size: var(--text-sm);
  opacity: 0.85;
  transition: opacity var(--duration-fast) var(--ease-out);
}

.site-footer__link:hover {
  opacity: 1;
  color: var(--ink-inverse);
}

.site-footer__bottom {
  padding-block: var(--space-6);
  border-top: 1px solid color-mix(in srgb, var(--ink-inverse) 12%, transparent);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: var(--ink-inverse-muted);
}

@media (min-width: 48rem) {
  .site-footer__bottom { flex-direction: row; justify-content: space-between; align-items: center; }
}

/* ============ Newsletter ============ */

.newsletter__heading {
  font-size: var(--text-lg);
  color: var(--ink-inverse);
  margin-block-end: var(--space-2);
  font-weight: var(--weight-medium);
}

.newsletter__sub {
  font-size: var(--text-sm);
  color: var(--ink-inverse-muted);
  margin-block-end: var(--space-4);
}

.newsletter__form {
  display: flex;
  gap: var(--space-2);
  align-items: stretch;
  background: color-mix(in srgb, var(--ink-inverse) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--ink-inverse) 20%, transparent);
  border-radius: var(--radius-full);
  padding: var(--space-1);
  transition: border-color var(--duration-fast) var(--ease-out);
}

.newsletter__form:focus-within {
  border-color: var(--brand);
}

.newsletter__input {
  flex: 1;
  background: transparent;
  border: 0;
  padding: var(--space-3) var(--space-4);
  color: var(--ink-inverse);
  font-size: var(--text-sm);
}

.newsletter__input::placeholder { color: var(--ink-inverse-muted); }
.newsletter__input:focus { outline: 0; }

.newsletter__submit {
  background: var(--brand);
  color: var(--brand-on);
  border: 0;
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  cursor: pointer;
  transition: background-color var(--duration-fast) var(--ease-out);
}

.newsletter__submit:hover { background: var(--brand-hover); }

.newsletter__note {
  font-size: var(--text-xs);
  color: var(--ink-inverse-muted);
  margin-block-start: var(--space-3);
}

/* ============ Breadcrumbs ============ */

.breadcrumbs {
  font-size: var(--text-sm);
  color: var(--ink-muted);
  padding-block: var(--space-4);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
}

.breadcrumbs li { display: flex; align-items: center; gap: var(--space-2); }

.breadcrumbs li + li::before {
  content: "/";
  color: var(--ink-faint);
}

.breadcrumbs a {
  color: var(--ink-muted);
  text-decoration: none;
}

.breadcrumbs a:hover { color: var(--ink); }

.breadcrumbs [aria-current="page"] { color: var(--ink); font-weight: var(--weight-medium); }

/* ============ Back to top ============ */

.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 3rem;
  height: 3rem;
  display: none;
  place-items: center;
  background: var(--bg-elevated);
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-md);
  z-index: var(--z-sticky);
  cursor: pointer;
  transition: opacity var(--duration-base) var(--ease-out),
              transform var(--duration-base) var(--ease-out);
}

@media (min-width: 48rem) {
  .back-to-top { display: grid; }
}

.back-to-top[data-visible="false"] {
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
}

.back-to-top:hover {
  background: var(--bg-muted);
}

/* ============ Card ============ */

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out);
}

.card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}

.card__media {
  aspect-ratio: 16 / 9;
  background: var(--bg-muted);
  overflow: hidden;
}

.card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.card:hover .card__media img { transform: scale(1.02); }

.card__body {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}

.card__chip {
  align-self: flex-start;
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: var(--brand-soft);
  color: var(--brand);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.card__title {
  font-size: var(--text-xl);
  line-height: var(--leading-tight);
  text-wrap: balance;
}

.card__title a {
  color: inherit;
  text-decoration: none;
}

.card__title a:hover { color: var(--brand); }

.card__excerpt {
  color: var(--ink-soft);
  font-size: var(--text-base);
  line-height: var(--leading-snug);
}

.card__meta {
  margin-top: auto;
  font-size: var(--text-xs);
  color: var(--ink-muted);
  display: flex;
  gap: var(--space-2);
}