*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --cobalt: #1a3a7c;
  --cobalt-deep: #0d2154;
  --cobalt-mid: #2a4fa0;
  --cobalt-light: #d6e0f5;
  --cobalt-pale: #eef2fb;
  --warm: #f7f4ef;
  --gold: #b5843a;
  --ink: #0d1a38;
  --muted: rgba(13,26,56,0.65);
  --serif: 'Cormorant Garamond', Georgia, serif;
  --sans: 'Jost', 'Helvetica Neue', sans-serif;
}
html { scroll-behavior: smooth; }
body {
  background: var(--cobalt-pale);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 300;
  letter-spacing: 0.01em;
  overflow-x: hidden;
}

/* NAV */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.75rem 3rem;
  background: rgba(238,242,251,0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(26,58,124,0.08);
}
.logo-wrap { display: flex; flex-direction: row; align-items: center; gap: 0.75rem; text-decoration: none; }
.logo-main { font-family: var(--serif); font-size: 1rem; font-weight: 300; letter-spacing: 0.18em; text-transform: uppercase; color: var(--cobalt-deep); }
.logo-aer { font-size: 0.48rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--gold); }
.nav-links { display: flex; gap: 2.5rem; list-style: none; }
.nav-links a { color: var(--cobalt); text-decoration: none; font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase; font-weight: 300; opacity: 0.6; transition: opacity 0.3s; }
.nav-links a:hover { opacity: 1; }
.nav-links a.active { opacity: 1; border-bottom: 1px solid var(--gold); padding-bottom: 2px; }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; background: none; border: none; }
.hamburger span { display: block; width: 24px; height: 1.5px; background: var(--cobalt-deep); transition: all 0.3s; }
.nav-mobile { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(238,242,251,0.97); z-index: 99; flex-direction: column; justify-content: center; align-items: center; gap: 2.5rem; }
.nav-mobile.open { display: flex; }
.nav-mobile a { font-family: var(--serif); font-size: 2rem; font-weight: 300; color: var(--cobalt-deep); text-decoration: none; letter-spacing: 0.05em; opacity: 0.8; }
.nav-mobile a:hover { opacity: 1; }
.nav-mobile .close-btn { position: absolute; top: 1.75rem; right: 1.5rem; font-size: 1.5rem; color: var(--cobalt-deep); cursor: pointer; background: none; border: none; font-family: var(--sans); opacity: 0.5; }

/* PAGE HEADER */
.page-header {
  padding: 10rem 3rem 5rem;
  border-bottom: 1px solid rgba(26,58,124,0.1);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: end;
}
.page-eyebrow { font-size: 0.68rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--gold); margin-bottom: 1.5rem; }
.page-title { font-family: var(--serif); font-size: clamp(3rem, 6vw, 5rem); font-weight: 300; line-height: 1.05; color: var(--cobalt-deep); }
.page-title em { font-style: italic; color: var(--cobalt-mid); }
.header-right p { font-family: var(--serif); font-size: 1.2rem; font-weight: 300; line-height: 1.6; color: var(--cobalt-deep); margin-bottom: 1rem; }
.header-right .sub { font-size: 0.88rem; font-family: var(--sans); line-height: 1.8; color: var(--muted); }

/* FEATURED POST */
.featured-post {
  padding: 5rem 3rem;
  background: var(--cobalt-deep);
}
.featured-label { font-size: 0.68rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--gold); margin-bottom: 2rem; }
.featured-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}
.featured-img {
  width: 100%;
  max-height: 420px;
  object-fit: contain;
  display: block;
  background: rgba(13,33,84,0.2);
}
.featured-content {}
.featured-serie {
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  opacity: 0.7;
  margin-bottom: 1rem;
}
.featured-title {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 300;
  color: var(--warm);
  line-height: 1.15;
  margin-bottom: 1.5rem;
}
.featured-body {
  font-size: 0.92rem;
  line-height: 1.9;
  color: rgba(247,244,239,0.6);
  margin-bottom: 2rem;
}
.featured-meta {
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(247,244,239,0.35);
  margin-bottom: 2rem;
}
.read-btn {
  display: inline-block;
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cobalt-deep);
  background: var(--warm);
  padding: 1rem 2rem;
  text-decoration: none;
  transition: background 0.3s;
  font-weight: 400;
}
.read-btn:hover { background: var(--cobalt-light); }

/* POSTS GRID */
.posts-sectie { padding: 6rem 3rem; }
.section-header { display: flex; align-items: center; gap: 2rem; margin-bottom: 4rem; }
.section-eyebrow { font-size: 0.68rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--gold); }
.section-rule { flex: 1; height: 1px; background: rgba(26,58,124,0.12); }
.posts-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.post-card {
  background: #fff;
  border: 1px solid rgba(26,58,124,0.1);
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  text-decoration: none;
  transition: border-color 0.4s, box-shadow 0.4s;
}
.post-card:hover { border-color: rgba(26,58,124,0.3); box-shadow: 0 4px 24px rgba(26,58,124,0.07); }
.post-num { font-family: var(--serif); font-size: 0.68rem; color: var(--gold); opacity: 0.7; }
.post-serie { font-size: 0.6rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--muted); }
.post-title { font-family: var(--serif); font-size: 1.2rem; font-weight: 300; color: var(--cobalt-deep); line-height: 1.25; }
.post-excerpt { font-size: 0.82rem; line-height: 1.75; color: var(--muted); flex: 1; }
.post-link { font-size: 0.62rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--gold); margin-top: auto; }
.post-card.coming-soon { opacity: 0.45; pointer-events: none; }
.coming-badge { font-size: 0.58rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--muted); border: 1px solid rgba(26,58,124,0.15); padding: 0.25rem 0.6rem; display: inline-block; width: fit-content; }

/* FOOTER */
footer { padding: 2.5rem 3rem; border-top: 1px solid rgba(26,58,124,0.1); display: flex; justify-content: space-between; align-items: center; }
footer p { font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(13,26,56,0.3); }
.footer-links { display: flex; gap: 2rem; }
footer a { color: rgba(13,26,56,0.35); text-decoration: none; font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; transition: color 0.3s; }
footer a:hover { color: var(--cobalt); }

@media (max-width: 768px) {
  nav { padding: 1.25rem 1.5rem; }
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .page-header { grid-template-columns: 1fr; padding: 7rem 1.5rem 3rem; gap: 2rem; }
  .featured-post { padding: 4rem 1.5rem; }
  .featured-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .posts-sectie { padding: 4rem 1.5rem; }
  .posts-grid { grid-template-columns: 1fr; }
  footer { flex-direction: column; align-items: flex-start; gap: 1.5rem; padding: 2rem 1.5rem; }
}

/* ===== SERIE-KOPPEN ===== */
.series-head { margin-bottom: 3rem; max-width: 640px; }
.series-kicker { display: block; font-size: 0.62rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--gold); margin-bottom: 0.9rem; }
.series-title { font-family: var(--serif); font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 300; line-height: 1.1; color: var(--cobalt-deep); margin-bottom: 0.85rem; }
.series-desc { font-size: 0.9rem; line-height: 1.7; color: var(--muted); margin-bottom: 1.1rem; }
.series-meta { display: inline-block; font-size: 0.6rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--muted); border-top: 1px solid rgba(26,58,124,0.15); padding-top: 0.75rem; }

/* ===== DONKERE SERIE-BAND (serie 2) ===== */
.posts-sectie--dark { background: var(--cobalt-deep); }
.posts-sectie--dark .series-title { color: var(--warm); }
.posts-sectie--dark .series-desc { color: rgba(247,244,239,0.6); }
.posts-sectie--dark .series-meta { color: rgba(247,244,239,0.45); border-top-color: rgba(247,244,239,0.18); }
.posts-sectie--dark .post-card { background: rgba(247,244,239,0.04); border: 1px solid rgba(181,132,58,0.3); }
.posts-sectie--dark .post-card:hover { border-color: rgba(181,132,58,0.6); box-shadow: 0 6px 28px rgba(0,0,0,0.28); }
.posts-sectie--dark .post-title { color: var(--warm); }
.posts-sectie--dark .post-serie { color: rgba(247,244,239,0.5); }
.posts-sectie--dark .post-excerpt { color: rgba(247,244,239,0.6); }
.posts-sectie--dark .post-num,
.posts-sectie--dark .post-link { opacity: 1; }