/*
 * vista-vr.css
 * VISTA College — VR landingspagina
 * Basisstructuur: thema, header, sectietabs, hero, contentsecties, kaarten en footer.
 * Niet opgenomen: Ai.VA, vorige/volgende navigatie, promptkaarten, tool-specifieke blokken.
 */

:root {
  --petrol: #00555c;
  --petrol-80: #336e74;
  --petrol-60: #668d91;
  --petrol-40: #99b5b8;
  --petrol-20: #ccdadb;
  --petrol-10: #e6ecec;
  --petrol-glow: rgba(0, 85, 92, .16);

  --koraal: #ec644a;
  --koraal-80: #f0836e;
  --koraal-dark: #d4593f;
  --koraal-glow: rgba(236, 100, 74, .14);

  --geel: #fff265;
  --geel-glow: rgba(255, 242, 101, .22);

  --bg: #f5f5f3;
  --surface: #ffffff;
  --surface-2: #eeeeed;
  --surface-3: #e2e2df;
  --border: #d4d4d0;
  --border-up: #c0c0bc;
  --text: #1a1a1a;
  --text-soft: #3a3a3a;
  --text-muted: #777777;
  --white: #ffffff;

  --shadow: 0 4px 20px rgba(0, 0, 0, .10);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, .18);
  --ease: .2s ease;
  --radius: 8px;
  --radius-lg: 14px;

  --header-h: 72px;
  --tabs-h: 40px;
  --topbar-h: calc(var(--header-h) + var(--tabs-h));
  --content-max: 1080px;
  --col-max: 680px;
}

[data-theme="dark"] {
  --bg: #0a0a0a;
  --surface: #111111;
  --surface-2: #1a1a1a;
  --surface-3: #222222;
  --border: #2c2c2c;
  --border-up: #3c3c3c;
  --text: #f0f0f0;
  --text-soft: #b8b8b8;
  --text-muted: #686868;
  --shadow: 0 4px 20px rgba(0, 0, 0, .45);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, .65);
  --petrol-glow: rgba(0, 85, 92, .22);
  --koraal-glow: rgba(236, 100, 74, .20);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Raleway', sans-serif;
  font-weight: 400;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  transition: background var(--ease), color var(--ease);
}

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

a {
  color: inherit;
}

/* Header */
.top-bar {
  position: sticky;
  top: 0;
  z-index: 300;
  display: flex;
  align-items: stretch;
  height: var(--topbar-h);
  box-shadow: 0 2px 20px rgba(0, 0, 0, .4);
}

.header-brand {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 8px;
  height: 100%;
  padding: 0 48px 0 24px;
  background: var(--petrol);
  flex-shrink: 0;
}

.header-brand::after {
  content: '';
  position: absolute;
  top: 0;
  right: -24px;
  width: 0;
  height: 0;
  border-top: var(--topbar-h) solid var(--petrol);
  border-right: 24px solid transparent;
  pointer-events: none;
}

.header-brand img {
  height: 88px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, .4));
  flex-shrink: 0;
}

.brand-logo-link {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.brand-logo-link:focus-visible {
  outline: 2px solid var(--geel);
  outline-offset: 4px;
}

.brand-sep {
  width: 1px;
  height: 52px;
  margin: 0 4px;
  background: rgba(255, 255, 255, .25);
  flex-shrink: 0;
}

.top-bar-right {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-width: 0;
}

.header-nav-zone {
  position: relative;
  display: flex;
  align-items: stretch;
  height: var(--header-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  transition: background var(--ease), border-color var(--ease);
}

.header-nav-zone::after {
  content: '';
  position: absolute;
  right: 40px;
  top: 0;
  bottom: 0;
  z-index: 5;
  width: 48px;
  pointer-events: none;
  background: linear-gradient(to right, transparent, var(--surface));
  transition: opacity .25s ease;
}

.header-nav-zone.at-end::after {
  opacity: 0;
}

.main-nav {
  display: flex;
  align-items: stretch;
  flex: 1;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.main-nav::-webkit-scrollbar {
  display: none;
}

.main-nav a {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  padding: 0 16px;
  color: var(--text-muted);
  border-bottom: 3px solid transparent;
  font-size: .75rem;
  font-weight: 900;
  letter-spacing: .06em;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}

.main-nav a:first-child {
  padding-left: 32px;
}

.main-nav a:hover {
  color: var(--text-soft);
  background: var(--surface-2);
}

.main-nav a.active {
  color: var(--petrol-80);
  border-bottom-color: var(--petrol);
  background: var(--petrol-glow);
}

.main-nav .home-nav-link {
  width: 72px;
  justify-content: center;
  flex-direction: column;
  gap: 2px;
  padding: 0 14px;
  color: var(--petrol-80);
  line-height: 1;
}

.main-nav .home-nav-link:hover {
  color: var(--text-soft);
  background: var(--surface-2);
}

.main-nav .home-nav-link svg {
  width: 22px;
  height: 20px;
}

.main-nav .home-nav-link span {
  font-size: .58rem;
  line-height: 1;
  letter-spacing: .08em;
}

.main-nav .home-nav-mobile-label {
  display: none;
}

.theme-toggle,
.menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  flex-shrink: 0;
  color: var(--text-muted);
  background: transparent;
  border: 0;
  border-left: 1px solid var(--border-up);
  cursor: pointer;
  transition: color var(--ease), background var(--ease);
}

.theme-toggle:hover,
.menu-toggle:hover {
  color: var(--text);
  background: var(--surface-2);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
}

.menu-toggle {
  display: none;
}

.menu-toggle-lines {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 18px;
}

.menu-toggle-lines span {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 999px;
  transition: transform var(--ease), opacity var(--ease);
}

.header-nav-zone.nav-open .menu-toggle-lines span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.header-nav-zone.nav-open .menu-toggle-lines span:nth-child(2) {
  opacity: 0;
}

.header-nav-zone.nav-open .menu-toggle-lines span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Sectietabs */
.section-tabs-wrapper {
  position: relative;
  display: flex;
  align-items: stretch;
  min-height: var(--tabs-h);
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
  transition: background var(--ease), border-color var(--ease);
}

.section-tabs-wrapper::after {
  content: '';
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  z-index: 5;
  width: 40px;
  pointer-events: none;
  background: linear-gradient(to right, transparent, var(--surface-2));
  transition: opacity .25s ease;
}

.section-tabs-wrapper.at-end::after {
  opacity: 0;
}

.tabs-inner {
  display: flex;
  align-items: stretch;
  flex: 1;
  min-height: var(--tabs-h);
  overflow-x: auto;
  scrollbar-width: none;
}

.tabs-inner::-webkit-scrollbar {
  display: none;
}

.tabs-label {
  display: flex;
  align-items: center;
  gap: 5px;
  flex-shrink: 0;
  padding: 0 14px 0 32px;
  color: var(--text-muted);
  border-right: 1px solid var(--border-up);
  font-size: .6rem;
  font-weight: 900;
  letter-spacing: .14em;
  text-transform: uppercase;
  white-space: nowrap;
  user-select: none;
}

.tabs-label svg {
  width: 10px;
  height: 10px;
}

.section-tabs {
  display: flex;
  align-items: stretch;
  flex: 1;
}

.section-tabs a {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
  padding: 0 16px;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  font-size: .7rem;
  font-weight: 800;
  letter-spacing: .05em;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
  transition: color var(--ease), border-color var(--ease);
}

.section-tabs a svg {
  width: 12px;
  height: 12px;
  opacity: .5;
  transition: opacity var(--ease);
}

.section-tabs a:hover {
  color: var(--text);
}

.section-tabs a.active {
  color: var(--koraal);
  border-bottom-color: var(--koraal);
  font-weight: 900;
}

.section-tabs a.active svg {
  opacity: 1;
  stroke: var(--koraal);
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding: 80px 24px 72px;
  background:
    radial-gradient(circle at 20% 15%, var(--petrol-glow), transparent 30%),
    radial-gradient(circle at 85% 20%, var(--koraal-glow), transparent 28%),
    var(--bg);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: 56px;
  align-items: center;
  max-width: var(--content-max);
  margin: 0 auto;
}

.hero h1 {
  max-width: 720px;
  font-size: clamp(2.35rem, 6vw, 5rem);
  line-height: .95;
  font-weight: 900;
  letter-spacing: -.055em;
}

.hero h1 em {
  color: var(--koraal);
  font-style: normal;
}

.hero p {
  max-width: 660px;
  margin-top: 28px;
  color: var(--text-soft);
  font-size: clamp(1rem, 2vw, 1.25rem);
  line-height: 1.7;
}

.hero-img {
  position: relative;
  padding: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.hero-img img {
  width: 100%;
  border-radius: calc(var(--radius-lg) - 4px);
}

/* Content */
.page-wrap {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.section {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 48px;
  padding: 56px 0;
  border-bottom: 1px solid var(--border);
  scroll-margin-top: calc(var(--topbar-h) + 28px);
}

.section:last-child {
  border-bottom: 0;
}

.section-meta {
  position: sticky;
  top: calc(var(--topbar-h) + 24px);
  align-self: start;
  color: var(--text-muted);
  font-size: .9rem;
  line-height: 1.6;
}

.section-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.section-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  color: var(--white);
  background: var(--petrol);
  border-radius: 999px;
  box-shadow: 0 8px 20px var(--petrol-glow);
}

.section-icon svg {
  width: 18px;
  height: 18px;
}

.section-label {
  color: var(--text);
  font-size: .76rem;
  font-weight: 900;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.section-body {
  max-width: var(--col-max);
}

.section-body.full {
  max-width: none;
}

.section-body h2 {
  margin-bottom: 22px;
  font-size: clamp(1.75rem, 3vw, 2.55rem);
  line-height: 1.1;
  font-weight: 900;
  letter-spacing: -.035em;
}

.section-body h3 {
  margin: 34px 0 14px;
  font-size: 1.18rem;
  line-height: 1.25;
  font-weight: 900;
}

.section-body p + p {
  margin-top: 18px;
}

.section-body p,
.section-body li {
  color: var(--text-soft);
}

.section-body strong {
  color: var(--text);
  font-weight: 900;
}

.section-body ul,
.section-body ol {
  margin: 18px 0 0 1.2rem;
}

.section-body li + li {
  margin-top: 8px;
}

.info-box,
.speech-bubble,
.email-block {
  margin-top: 28px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.info-box {
  border-left: 5px solid var(--koraal);
}

.speech-bubble {
  border-left: 5px solid var(--petrol);
}

.email-block a {
  color: var(--koraal);
  font-weight: 900;
  text-decoration: none;
}

.email-block a:hover {
  text-decoration: underline;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 22px;
}

.card {
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.card strong {
  display: block;
  margin-bottom: 8px;
  color: var(--text);
  font-size: 1rem;
  font-weight: 900;
  line-height: 1.3;
}

.card span {
  display: block;
  color: var(--text-soft);
  font-size: .94rem;
  line-height: 1.55;
}

.workshop-block {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 24px;
  align-items: start;
  margin-top: 22px;
}

.workshop-img {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 24px;
  padding: 12px 18px;
  border-radius: 999px;
  border: 1px solid var(--border-up);
  font-size: .78rem;
  font-weight: 900;
  letter-spacing: .06em;
  text-decoration: none;
  text-transform: uppercase;
  transition: transform var(--ease), background var(--ease), border-color var(--ease), color var(--ease);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  color: var(--white);
  background: var(--petrol);
  border-color: var(--petrol);
}

.btn-primary:hover {
  background: var(--petrol-80);
}

/* Footer */
.footer {
  margin-top: 80px;
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: 42px 24px;
}

.footer-container {
  max-width: 940px;
  margin: 0 auto;
  min-height: 90px;

  display: grid;
  grid-template-columns: minmax(320px, 380px) minmax(320px, 420px);
  grid-template-areas: "text logo";
  align-items: center;
  justify-content: center;
  column-gap: 48px;
}

.footer-logo {
  grid-area: logo;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.footer-logo img {
  width: auto;
  max-width: min(420px, 100%);
  max-height: 86px;
  display: block;
  object-fit: contain;
}

.footer-text {
  grid-area: text;
  position: static;
  max-width: 380px;
  text-align: left;

  color: var(--text-muted);
  font-size: .78rem;
  line-height: 1.45;
}

.footer-credit {
  margin-bottom: 7px;
  color: var(--text-muted);
  font-size: .86rem;
  font-style: italic;
}

.footer-credit strong {
  color: var(--text-soft);
  font-weight: 800;
}

.footer-text p {
  margin: 0 0 5px;
}

@media (max-width: 780px) {
  .footer {
    padding: 34px 22px;
  }

  .footer-container {
    min-height: 0;
    grid-template-columns: 1fr;
    grid-template-areas:
      "text"
      "logo";
    row-gap: 20px;
    justify-content: start;
  }

  .footer-logo {
    justify-content: flex-start;
  }

  .footer-logo img {
    max-width: min(360px, 100%);
    max-height: 68px;
  }

  .footer-text {
    max-width: 100%;
    font-size: .76rem;
  }
}


/* CTA e-mailblok — brede, rustige knop */
.email-block {
  padding: 28px;
}

.email-block p {
  margin-bottom: 18px;
}

.email-block .btn,
.email-block .btn-primary {
  width: 100%;
  min-height: 64px;
  margin-top: 0;
  padding: 18px 22px;

  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 14px;

  border-radius: 12px;
  border: 1px solid var(--border);

  background: var(--surface-2);
  color: var(--text-soft);

  font-size: .86rem;
  font-weight: 800;
  letter-spacing: .02em;
  text-transform: none;
  text-decoration: none;
}

.email-block .btn:hover,
.email-block .btn-primary:hover {
  transform: none;
  background: var(--surface-3);
  border-color: var(--border-up);
  color: var(--text);
  text-decoration: none;
}

.email-block .btn svg,
.email-block .btn-primary svg {
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  color: var(--text-muted);
}

@media (max-width: 560px) {
  .email-block {
    padding: 22px;
  }

  .email-block .btn,
  .email-block .btn-primary {
    min-height: 58px;
    padding: 16px 18px;
    font-size: .82rem;
  }

  .email-block .btn svg,
  .email-block .btn-primary svg {
    width: 26px;
    height: 26px;
  }
}

/* Responsive */
@media (max-width: 900px) {
  .hero-inner,
  .section,
  .workshop-block {
    grid-template-columns: 1fr;
  }

  .section-meta {
    position: static;
  }

  .section-body,
  .section-body.full {
    max-width: none;
  }
}

@media (max-width: 780px) {
  :root {
    --header-h: 56px;
    --tabs-h: 36px;
  }

  .header-brand {
    padding: 0 36px 0 14px;
    gap: 6px;
  }

  .header-brand::after {
    right: -18px;
    border-top-width: var(--topbar-h);
    border-right-width: 18px;
  }

  .header-brand img {
    height: 44px;
  }

  .brand-sep {
    height: 32px;
  }

  .menu-toggle {
    display: flex;
    width: 46px;
    margin-left: auto;
    order: 1;
  }

  .theme-toggle {
    width: 46px;
    order: 2;
  }

  .header-nav-zone {
    position: relative;
    justify-content: flex-end;
  }

  .header-nav-zone::after {
    display: none;
  }

  .header-nav-zone .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 12;
    display: none;
    flex-direction: column;
    align-items: stretch;
    overflow: visible;
    background: var(--surface);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border-up);
    box-shadow: var(--shadow-lg);
  }

  .header-nav-zone.nav-open .main-nav {
    display: flex;
  }

  .main-nav a,
  .main-nav a:first-child {
    min-height: 48px;
    padding: 0 18px;
    font-size: .74rem;
    border-bottom: 1px solid var(--border);
  }

  .main-nav a:last-child {
    border-bottom: none;
  }

  .main-nav a.active {
    border-bottom-color: var(--border);
  }

  .main-nav .home-nav-link {
    width: auto;
    flex-direction: row;
    justify-content: flex-start;
    gap: 10px;
    line-height: 1.2;
  }

  .main-nav .home-nav-link svg {
    width: 18px;
    height: 18px;
  }

  .main-nav .home-nav-link .home-nav-short {
    font-size: .74rem;
    letter-spacing: .06em;
  }

  .main-nav .home-nav-link .home-nav-mobile-label {
    display: inline;
    font-size: .74rem;
    letter-spacing: .06em;
  }

  .tabs-label {
    padding: 0 10px 0 20px;
    font-size: .58rem;
  }

  .section-tabs a {
    padding: 0 12px;
    font-size: .66rem;
  }

  .hero {
    padding: 56px 20px 48px;
  }

  .page-wrap {
    padding: 28px 20px 64px;
  }

  .section {
    gap: 22px;
    padding: 42px 0;
  }
}

@media (max-width: 560px) {
  .cards-grid,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .footer-left,
  .footer-center {
    justify-self: start;
  }
}

@media (max-width: 480px) {
  :root {
    --header-h: 52px;
    --tabs-h: 34px;
  }

  .header-brand {
    padding: 0 30px 0 12px;
    gap: 4px;
  }

  .header-brand::after {
    right: -16px;
    border-top-width: var(--topbar-h);
    border-right-width: 16px;
  }

  .header-brand .brand-sep,
  .brand-logo-secondary {
    display: none;
  }

  .header-brand img {
    height: 38px;
  }

  .theme-toggle,
  .menu-toggle {
    width: 40px;
  }

  .tabs-label {
    display: none;
  }

  .section-tabs a {
    padding: 0 10px;
    font-size: .64rem;
  }

  .section-tabs a svg {
    display: none;
  }

  .hero h1 {
    letter-spacing: -.04em;
  }
}



/* =========================================================
   HERO / TITELSECTIE — afgestemd op AI-pagina
   Deze override trekt de VR-hero gelijk met de hero-opbouw
   van de AI-site: compactere titel, vaste contentbreedte,
   rustig gradientvlak en afbeelding in 4:3-verhouding.
========================================================= */

.hero {
  background: linear-gradient(140deg, #012e32 0%, #011a1d 55%, var(--bg) 100%);
  border-bottom: 1px solid var(--border);
  padding: 72px 0 64px;
}

[data-theme="light"] .hero {
  background: linear-gradient(140deg, var(--petrol-20) 0%, var(--petrol-10) 55%, var(--bg) 100%);
}

.hero-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 48px;

  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 56px;
  align-items: center;
}

.hero h1 {
  max-width: 620px;
  margin-bottom: 20px;

  color: var(--white);

  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.02em;
}

[data-theme="light"] .hero h1 {
  color: var(--petrol);
}

.hero h1 em {
  color: var(--koraal);
  font-style: normal;
}

.hero p {
  max-width: 480px;
  margin-top: 0;

  color: var(--text-soft);

  font-size: 1.05rem;
  line-height: 1.75;
}

.hero-img {
  overflow: hidden;

  padding: 0;
  aspect-ratio: 3 / 2;

  display: flex;
  align-items: center;
  justify-content: center;

  background: var(--surface-3);
  border: 0;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);

  color: var(--text-muted);
  font-size: .85rem;
}

.hero-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;

  image-rendering: auto;

  border-radius: 0;
}

@media (max-width: 860px) {
  .hero-inner {
    grid-template-columns: 1fr;
    padding: 0 24px;
  }

  .hero-img {
    display: none;
  }
}

@media (max-width: 640px) {
  .hero {
    padding: 56px 0 48px;
  }

  .hero h1 {
    font-size: clamp(2rem, 11vw, 2.8rem);
  }
}