/* =========================================================
   Basis, layout, navigatie, footer, herbruikbare componenten
   ========================================================= */

body {
  background-color: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(156, 59, 59, 0.05), transparent 40%),
    radial-gradient(circle at 88% 78%, rgba(79, 106, 92, 0.06), transparent 45%);
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

.container--narrow {
  max-width: var(--container-narrow);
}

section {
  padding-block: var(--space-xl);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-ink);
  line-height: 1.2;
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }

p {
  color: var(--color-ink-soft);
}

.lead {
  font-size: var(--fs-lead);
  color: var(--color-ink-soft);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--fs-small);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--color-primary);
  display: inline-block;
}

.eyebrow--secondary { color: var(--color-secondary); }
.eyebrow--secondary::before { background: var(--color-secondary); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.9rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: var(--fs-body);
  transition: transform var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base), color var(--transition-base);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--secondary {
  background: var(--color-secondary);
  color: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.btn--secondary:hover {
  background: var(--color-secondary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  background: transparent;
  color: var(--color-ink);
  border: 1.5px solid var(--color-border);
}

.btn--outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn--block {
  width: 100%;
}

.btn[disabled],
.btn--disabled {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

.btn--large {
  padding: 1.1rem 2.4rem;
  font-size: 1.05rem;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(246, 240, 230, 0.86);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border-soft);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1.1rem;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--color-ink);
}

.brand__mark {
  color: var(--color-primary);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav__list a {
  font-weight: 500;
  font-size: 0.98rem;
  color: var(--color-ink-soft);
  position: relative;
  padding-block: 0.3rem;
  transition: color var(--transition-base);
}

.nav__list a:hover,
.nav__list a.is-active {
  color: var(--color-primary);
}

.nav__list a.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--color-primary);
  border-radius: var(--radius-pill);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.4rem;
}

.nav__toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-ink);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-ink);
  color: #ece4d6;
  padding-block: var(--space-lg) var(--space-md);
  margin-top: var(--space-xl);
}

.site-footer a {
  color: #ece4d6;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid rgba(236, 228, 214, 0.14);
}

.site-footer__brand {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.site-footer__desc {
  color: rgba(236, 228, 214, 0.72);
  max-width: 32ch;
}

.site-footer h4 {
  font-family: var(--font-body);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(236, 228, 214, 0.55);
  margin-bottom: var(--space-sm);
}

.site-footer__list {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.site-footer__list a {
  color: rgba(236, 228, 214, 0.85);
  transition: color var(--transition-base);
}

.site-footer__list a:hover {
  color: var(--color-accent-gold);
}

.site-footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-xs);
  padding-top: var(--space-md);
  font-size: var(--fs-small);
  color: rgba(236, 228, 214, 0.55);
}

/* ---------- Placeholder boekomslag (nog geen kaft beschikbaar) ---------- */
.cover-placeholder {
  position: relative;
  background: linear-gradient(155deg, var(--color-secondary) 0%, var(--color-secondary-dark) 100%);
  color: var(--color-surface);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1.6rem;
  overflow: hidden;
}

.cover-placeholder::before {
  content: "G";
  position: absolute;
  font-family: var(--font-display);
  font-size: 16rem;
  font-weight: 700;
  color: rgba(255, 253, 246, 0.08);
  line-height: 1;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -42%);
  pointer-events: none;
}

.cover-placeholder::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(255, 253, 246, 0.25);
  border-radius: calc(var(--radius-md) - 4px);
}

.cover-placeholder__eyebrow {
  position: relative;
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 253, 246, 0.7);
  margin-bottom: 0.6rem;
}

.cover-placeholder__title {
  position: relative;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  line-height: 1.25;
}

.cover-placeholder__author {
  position: relative;
  margin-top: 0.6rem;
  font-size: 0.85rem;
  color: rgba(255, 253, 246, 0.75);
}

.cover-placeholder__tag {
  position: relative;
  margin-top: 1.1rem;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: rgba(255, 253, 246, 0.16);
  border: 1px solid rgba(255, 253, 246, 0.3);
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-pill);
}

.cover-placeholder--small::before { font-size: 8rem; }
.cover-placeholder--small .cover-placeholder__title { font-size: 1.05rem; }
.cover-placeholder--small .cover-placeholder__tag { font-size: 0.6rem; padding: 0.25rem 0.6rem; }

/* ---------- Card ---------- */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-soft);
}

/* ---------- Utility ---------- */
.text-center { text-align: center; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }

.pill-tag {
  display: inline-block;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-pill);
  background: var(--color-surface-soft);
  border: 1px solid var(--color-border);
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--color-ink-soft);
}

.section-heading {
  max-width: 640px;
  margin-bottom: var(--space-lg);
}

.section-heading--center {
  margin-inline: auto;
  text-align: center;
}

.section-heading h2 {
  margin-top: var(--space-xs);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .nav__list {
    position: fixed;
    inset: 72px var(--space-md) auto var(--space-md);
    flex-direction: column;
    align-items: stretch;
    background: var(--color-surface);
    border: 1px solid var(--color-border-soft);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
    box-shadow: var(--shadow-lg);
    gap: 0.2rem;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-base), opacity var(--transition-base);
  }

  .nav__list.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav__list a {
    padding: 0.7rem 0.6rem;
    display: block;
  }

  .nav__toggle {
    display: flex;
  }

  .nav__toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav__toggle.is-open span:nth-child(2) { opacity: 0; }
  .nav__toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
}