/* ============================================================
   COMPONENTS — Shared across all pages
   ============================================================ */

/* ── SITE HEADER ─────────────────────────────────────────────── */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background-color: rgba(253, 250, 245, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-4);
}

.site-header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text-primary);
}

.site-header__logo-mark {
  font-size: var(--text-xl);
  color: var(--color-yellow);
  line-height: 1;
  transition: transform var(--dur-base) var(--ease-out);
}

.site-header__logo:hover .site-header__logo-mark {
  transform: rotate(30deg);
}

.site-header__logo-text {
  font-family: var(--font-heading);
  font-weight: var(--weight-bold);
  font-size: var(--text-lg);
  letter-spacing: -0.01em;
}

.site-header__tagline {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-style: italic;
}

.site-header__back {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out),
              gap var(--dur-fast) var(--ease-out);
}

.site-header__back:hover {
  color: var(--color-green);
  gap: var(--space-3);
}

.site-header__back svg {
  transition: transform var(--dur-fast) var(--ease-out);
}

.site-header__back:hover svg {
  transform: translateX(-3px);
}

@media (max-width: 480px) {
  .site-header__tagline {
    display: none;
  }
}

/* ── SITE FOOTER ─────────────────────────────────────────────── */

.site-footer {
  background-color: var(--color-bg-section);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-12);
  margin-top: var(--space-24);
}

.site-footer__inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}

.site-footer__brand {
  font-family: var(--font-heading);
  font-weight: var(--weight-bold);
  font-size: var(--text-lg);
  color: var(--color-text-primary);
}

.site-footer__copy {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 440px;
  line-height: var(--leading-relaxed);
  margin-bottom: 0;
}

/* ── TOPIC BADGE ─────────────────────────────────────────────── */

.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background-color: var(--color-green-light);
  color: var(--color-green-dark);
}

.badge--coming-soon {
  background-color: var(--color-coral-light);
  color: var(--color-coral-dark);
}

/* ── CHAPTER CARD ─────────────────────────────────────────────── */

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

/* Published — clickable */
.chapter-card--published {
  cursor: pointer;
}

.chapter-card--published:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.chapter-card--published:hover .chapter-card__image img {
  transform: scale(1.04);
}

/* Coming soon — decorative */
.chapter-card--coming-soon {
  border-style: dashed;
  border-color: var(--color-border-dashed);
  cursor: default;
}

/* Image area */
.chapter-card__image {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background-color: var(--color-bg-section);
}

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

/* Placeholder when no image available */
.chapter-card__image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-bg-section) 0%, var(--color-yellow-light) 100%);
  font-size: 3rem;
  color: var(--color-yellow);
}

/* Coming soon overlay */
.chapter-card__overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(253, 250, 245, 0.65);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Card content */
.chapter-card__content {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}

.chapter-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.chapter-card__number {
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.chapter-card__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-snug);
  color: var(--color-text-primary);
  margin-bottom: 0;
}

.chapter-card--coming-soon .chapter-card__title {
  color: var(--color-text-muted);
}

.chapter-card__subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 0;
}

.chapter-card__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-green-dark);
  text-decoration: none;
  margin-top: auto;
  padding-top: var(--space-2);
  transition: gap var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}

.chapter-card__cta:hover {
  color: var(--color-green);
  gap: var(--space-3);
}

.chapter-card__cta svg {
  transition: transform var(--dur-fast) var(--ease-out);
  flex-shrink: 0;
}

.chapter-card__cta:hover svg {
  transform: translateX(3px);
}

/* Card as full link — wrap entire card */
a.chapter-card {
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}