/* ===================================
   MEESTERSCHAP — Stijlen
   =================================== */

/* --- Kleurvariabelen --- */
:root {
  --bg: #ffffff;
  --text: #1a1a1a;
  --muted: #737373;
  --border: #e5e5e5;
  --accent: #ff5900;
  --card: #f5f5f4;
}

/* Donker thema via knop */
[data-theme="dark"] {
  --bg: #111110;
  --text: #eeeeec;
  --muted: #737373;
  --border: #2c2c29;
  --accent: #fb923c;
  --card: #1a1917;
}

/* Donker thema via systeemvoorkeur */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111110;
    --text: #eeeeec;
    --muted: #737373;
    --border: #2c2c29;
    --accent: #fb923c;
    --card: #1a1917;
  }
}

/* --- Reset & basis --- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background-color: var(--bg);
  transition:
    background-color 0.3s,
    color 0.3s;
  -webkit-font-smoothing: antialiased;
}

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

ul,
ol {
  list-style: none;
}

img {
  display: block;
  max-width: 100%;
}

/* --- Navigatie --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 10;
  gap: 16px;
  transition:
    background-color 0.3s,
    border-color 0.3s;
}

.nav-logo {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.nav-links {
  display: flex;
  gap: 4px;
}

.nav-links a {
  font-size: 14px;
  color: var(--muted);
  padding: 6px 10px;
  border-radius: 8px;
  transition:
    color 0.15s,
    background-color 0.15s;
}

.nav-links a:hover,
.nav-links a.actief {
  color: var(--accent);
  background-color: var(--card);
}

.thema-knop {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  background: none;
  border-radius: 8px;
  color: var(--muted);
  cursor: pointer;
  transition:
    color 0.15s,
    background-color 0.15s;
}

.thema-knop:hover {
  color: var(--text);
  background-color: var(--card);
}

/* Zon zichtbaar in donker thema, maan in licht thema */
.icon-sun {
  display: none;
}
.icon-moon {
  display: block;
}

[data-theme="dark"] .icon-sun {
  display: block;
}
[data-theme="dark"] .icon-moon {
  display: none;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .icon-sun {
    display: block;
  }
  :root:not([data-theme="light"]) .icon-moon {
    display: none;
  }
}

/* --- Layout --- */
.pagina {
  padding-top: 120px;
  padding-bottom: 96px;
  max-width: 680px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.pagina-kop {
  margin-bottom: 64px;
}

.pagina-kop h1 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.pagina-kop p {
  color: var(--muted);
  font-size: 18px;
}

/* --- Hero --- */
.hero {
  min-height: 100dvh;
  padding-top: 60px;
  display: grid;
  grid-template-rows: 1fr auto;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 64px;
  max-width: 1080px;
  margin: 0 auto;
  padding: 64px 24px;
}

.hero h1 {
  font-size: clamp(36px, 5vw, 52px);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 24px;
}

.hero h1 .oranje {
  color: var(--accent);
}

.hero-subtitel {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 20px;
}

.hero-bio {
  color: var(--muted);
  font-size: 18px;
  max-width: 44ch;
  margin-bottom: 32px;
}

.hero-knoppen {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* Illustratie-placeholder */
.hero-illustratie {
  aspect-ratio: 3 / 4;
  max-height: 520px;
  border-radius: 20px;
  overflow: hidden;
}

.hero-illustratie img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 20px;
  display: block;
}

/* Meta-balk onderaan hero */
.hero-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--border);
  max-width: 1080px;
  margin: 0 auto;
  width: 100%;
  padding: 24px;
  transition: border-color 0.3s;
}

.hero-meta dt {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 4px;
}

.hero-meta dd {
  font-size: 13px;
  font-weight: 500;
}

/* --- Knoppen --- */
.knop {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: "Inter", sans-serif;
  font-size: 14px;
  font-weight: 500;
  padding: 10px 18px;
  border-radius: 8px;
  cursor: pointer;
  transition:
    opacity 0.15s,
    transform 0.15s;
}

.knop:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

.knop-vol {
  background-color: var(--accent);
  color: var(--bg);
}

.knop-leeg {
  border: 1px solid var(--border);
  color: var(--muted);
  background: none;
}

.knop-leeg:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* --- Kaarten (homepage) --- */
.kaarten-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.kaart-link {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 32px;
  background-color: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  transition:
    transform 0.2s,
    box-shadow 0.2s,
    border-color 0.2s;
}

.kaart-link:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
}

.kaart-link h2 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.kaart-link p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.5;
}

.kaart-pijl {
  align-self: flex-end;
  color: var(--muted);
  font-size: 18px;
  transition:
    color 0.15s,
    transform 0.15s;
}

.kaart-link:hover .kaart-pijl {
  color: var(--accent);
  transform: translate(2px, -2px);
}

/* --- Cards (weekly nerds / doelen) --- */
.card {
  background-color: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px;
  transition:
    transform 0.2s,
    box-shadow 0.2s,
    border-color 0.2s;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
  border-color: color-mix(in srgb, var(--accent) 30%, var(--border));
}

/* --- Weekly Nerds --- */
.week-lijst {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.week-label {
  font-size: 11px;
  font-family: monospace;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  display: block;
  margin-bottom: 8px;
}

.card h2 {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.card .onderwerp {
  font-size: 14px;
  color: var(--muted);
  font-style: italic;
  margin-bottom: 20px;
}

.takeaways {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.takeaways li {
  display: flex;
  gap: 12px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.55;
}

.takeaways li::before {
  content: "—";
  flex-shrink: 0;
  color: var(--border);
}

/* --- Doelen --- */
.doelen-lijst {
  display: flex;
  flex-direction: column;
  gap: 20px;
  counter-reset: doel;
}

.doel-nummer {
  font-family: monospace;
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 12px;
  display: block;
}

.card h2.doel-titel {
  font-size: 20px;
  margin-bottom: 12px;
}

.card p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
  margin-bottom: 12px;
}

/* Voortgangsbalk */
.voortgang-balk {
  height: 4px;
  background-color: var(--border);
  border-radius: 99px;
  overflow: hidden;
  margin-top: 20px;
}

.voortgang-fill {
  height: 100%;
  background-color: var(--accent);
  border-radius: 99px;
}

.voortgang-label {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--muted);
  margin-top: 6px;
}

/* --- Reflectie --- */
@keyframes highlight-section {
  0%   { background-color: transparent; }
  20%  { background-color: color-mix(in srgb, var(--accent) 15%, transparent); }
  100% { background-color: transparent; }
}

.reflectie-blok {
  margin-bottom: 48px;
  scroll-margin-top: 80px;
  border-radius: 10px;
  padding: 4px 12px;
}

.reflectie-doelen {
  margin-top: 32px;
  padding: 24px 28px;
  background-color: var(--card);
  border-left: 4px solid var(--accent);
  border-radius: 10px;
}

.reflectie-blok:target {
  animation: highlight-section 2s ease-out forwards;
}

.reflectie-blok h2 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.reflectie-blok h2::before {
  content: "";
  display: block;
  width: 4px;
  height: 1.2em;
  background-color: var(--accent);
  border-radius: 2px;
  flex-shrink: 0;
}

.reflectie-blok p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 16px;
}

.citaat {
  padding: 20px 24px;
  border-left: 3px solid var(--accent);
  background-color: var(--card);
  border-radius: 0 10px 10px 0;
  margin: 24px 0;
  font-style: italic;
  color: var(--text);
  font-size: 17px;
}

/* --- Vakken --- */
.vakken-sectie {
  max-width: 1400px;
  margin: 0 auto;
  padding: 64px 24px 96px;
}

.sectie-titel {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 32px;
}

.vakken-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.vak-kaart {
  display: block;
  border-radius: 14px;
  overflow: hidden;
  border: none;
  background-color: transparent;
  position: relative;
  box-shadow:
    0 2px 8px rgba(0, 0, 0, 0.08),
    0 8px 24px rgba(0, 0, 0, 0.06);
  transition:
    transform 0.2s,
    box-shadow 0.2s;
}

.vak-kaart:hover {
  box-shadow:
    0 4px 16px rgba(0, 0, 0, 0.1),
    0 16px 40px rgba(0, 0, 0, 0.1);
}

.vak-kaart img,
.vak-kaart .vak-video {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.vak-kaart:hover img,
.vak-kaart:hover .vak-video {
  transform: scale(1.05);
}

.vak-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 28px 14px 12px;
  background: linear-gradient(to top, rgba(0,0,0,0.55) 0%, transparent 100%);
  display: flex;
  align-items: flex-end;
}

.vak-naam {
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  text-shadow: 0 1px 4px rgba(0,0,0,0.4);
}

.vak-popup {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 20px;
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-radius: 14px;
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

.vak-kaart:hover .vak-popup,
.vak-kaart.popup-open .vak-popup {
  opacity: 1;
  pointer-events: auto;
}

.popup-knop {
  display: block;
  width: 100%;
  max-width: 200px;
  text-align: center;
  padding: 10px 20px;
  border-radius: 980px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.92);
  color: #111;
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
  transition: background 0.2s, transform 0.15s;
}

.popup-knop:hover {
  background: rgba(255, 255, 255, 1);
  transform: scale(1.03);
}

.popup-knop-leeg {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.popup-knop-leeg:hover {
  background: rgba(255, 255, 255, 0.25);
}

.vak-naam {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.3;
}

.vak-cijfer {
  font-size: 13px;
  font-family: monospace;
  color: var(--accent);
  font-weight: 700;
  white-space: nowrap;
}

@media (max-width: 560px) {
  .vakken-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Footer --- */
footer {
  border-top: 1px solid var(--border);
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  transition: border-color 0.3s;
}

footer p {
  font-size: 13px;
  color: var(--muted);
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  font-size: 13px;
  color: var(--muted);
  transition: color 0.15s;
}

.footer-links a:hover {
  color: var(--text);
}

/* --- Scheidingslijn --- */
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 48px 0;
}

/* --- Hamburger --- */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  border-radius: 8px;
}

.hamburger span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition:
    transform 0.2s,
    opacity 0.2s;
}

.hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Mobiel --- */
@media (max-width: 768px) {
  .nav {
    display: grid;
    grid-template-columns: 36px 1fr 36px;
    align-items: center;
  }

  .hamburger {
    display: flex;
    grid-column: 1;
  }

  .nav-logo {
    grid-column: 2;
    text-align: center;
  }

  .thema-knop {
    grid-column: 3;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 12px 16px;
    gap: 4px;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 10px 12px;
    font-size: 15px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 32px 20px 40px;
  }

  .hero-illustratie {
    aspect-ratio: 3 / 4;
    max-height: 420px;
    width: 100%;
  }

  .hero-illustratie img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 16px;
  }

  .hero-meta {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding: 20px;
  }
}

.card strong {
  color: #000;
}

@media (max-width: 480px) {
  .nav-links a span {
    display: none;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero-meta {
    grid-template-columns: 1fr 1fr;
  }

  .card {
    padding: 24px;
  }
}