/* ================================
   Basis: kleuren, spacing, typografie
   ================================ */
:root {
  --bg-page: #EBE8E6;
  --text-main: #1D1F25;
  --accent-bg: #ff6900;
  --accent-text-on: #ffffff;
  --max-width-content: 1200px;
  --nav-bg: #001F3F; /* donkerblauw navbar */

  --font-stack: "Readex Pro", -apple-system, BlinkMacSystemFont,
                "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --space-xs: 0.5rem;
  --space-s: 1rem;
  --space-m: 1.5rem;
  --space-l: 2rem;
  --space-xl: 3rem;
  --radius-s: 4px;
}

* {
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-page);
  color: var(--text-main);
  font-family: var(--font-stack);
  font-size: 18px;
  line-height: 1.6;
  font-weight: 400;
  padding-top: 80px; /* ruimte voor vaste header */
}

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

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

a:hover,
a:focus {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ================================
   Typografie
   ================================ */
h1, h2, h3 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-main);
}

h1 {
  font-size: clamp(2rem, 1rem + 2vw, 3.5rem);
}

h2 {
  font-size: clamp(1.5rem, 1rem + 1vw, 2rem);
  margin-bottom: var(--space-s);
}

h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-s);
}

p {
  font-size: 1rem;
  margin-bottom: var(--space-m);
}

/* ================================
   Layout helpers
   ================================ */
.container {
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: 0 var(--space-m);
}

.container.narrow { max-width: 900px; }
.center { text-align: center; }

.section { padding: var(--space-l) 0; }
.section-intro { padding-top: 0; }

.three-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-l);
}
.col { min-width: 0; }

/* ================================
   Navigatie / Header
   ================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--nav-bg);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  z-index: 1000;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.logo a {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.header-logo {
  max-height: 60px;
  width: auto;
  margin: 4px 0;
  filter: drop-shadow(0 0 2px rgba(0,0,0,0.3));
  transition: opacity 0.2s ease;
}
.header-logo:hover { opacity: 0.85; }

.menu-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  user-select: none;
}

.menu-label {
  font-size: 0.95rem;
  font-weight: 500;
  color: #fff;
}

.hamburger {
  width: 22px;
  height: 16px;
  position: relative;
}
.hamburger span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all 0.3s ease;
}
.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 7px; }
.hamburger span:nth-child(3) { top: 14px; }

.menu-toggle.active .hamburger span:nth-child(1) {
  transform: rotate(45deg);
  top: 7px;
}
.menu-toggle.active .hamburger span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.active .hamburger span:nth-child(3) {
  transform: rotate(-45deg);
  top: 7px;
}

/* ================================
   Overlay menu (fullscreen nav) met animatie
   ================================ */
.overlay-menu {
  position: fixed;
  inset: 0;
  background: rgba(0, 31, 63, 0.96);
  color: #fff;

  display: flex;               /* altijd in flow */
  justify-content: center;
  align-items: center;

  z-index: 999;

  opacity: 0;                  /* start onzichtbaar */
  transform: scale(0.98);
  pointer-events: none;        /* niet klikbaar als 'dicht' */
  transition: opacity 0.25s ease, transform 0.25s ease;
}

/* zichtbaar / open state */
.overlay-menu.active {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;        /* weer klikbaar */
}

.overlay-menu ul {
  list-style: none;
  padding: 0;
  text-align: center;
}

.overlay-menu li {
  margin: 1rem 0;
}

.overlay-menu a {
  color: #fff;
  font-size: 1.3rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s ease;
}

.overlay-menu a:hover {
  color: var(--accent-bg);
}


/* ================================
   Hero
   ================================ */
.hero {
  padding: var(--space-xl) var(--space-m) var(--space-l);
  text-align: center;
}

.logo-wrap {
  margin-bottom: var(--space-l);
}

.site-logo {
  max-width: 320px;
  margin: 0 auto;
}

.hero-title {
  font-size: clamp(2rem, 1rem + 2vw, 3.5rem);
  line-height: 1.25;
  max-width: 900px;
  margin: 0 auto;
}

/* ================================
   Highlight blok (oranje)
   ================================ */
.highlight {
  background-color: var(--accent-bg);
  color: var(--accent-text-on);
  padding: var(--space-l) var(--space-m);
  text-align: center;
}

.highlight-text {
  font-size: 1.05rem;
  line-height: 1.6;
  margin: var(--space-m) auto 0;
  max-width: 800px;
}

/* ================================
   CTA / Groenland Studio blok
   ================================ */
.cta-bottom {
  background-color: var(--accent-bg);
  color: var(--accent-text-on);
  padding: var(--space-xl) var(--space-m);
  margin-top: var(--space-xl);
  text-align: center;
}

.cta-bottom .partner-grid {
  display: grid;
  grid-template-columns: 1fr 3fr 1fr;
  align-items: center;
  gap: var(--space-l);
  max-width: var(--max-width-content);
  margin: 0 auto;
  position: relative;
}

/* zorg dat content boven de lijnen ligt */
.cta-bottom .partner-grid > * {
  position: relative;
  z-index: 1;
}

.partner-logo img {
  max-width: 200px;
  width: 100%;
  filter: brightness(0) invert(1);
}

.partner-text h2 {
  font-size: clamp(1.5rem, 1rem + 1.5vw, 2.5rem);
  margin-bottom: var(--space-m);
  line-height: 1.3;
  color: var(--accent-text-on);
}

.partner-text p {
  margin-bottom: var(--space-m);
  color: var(--accent-text-on);
}

.partner-text a {
  color: var(--accent-text-on);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(255,255,255,0.6);
}

.partner-text a:hover {
  text-decoration-color: rgba(255,255,255,1);
}

.partner-cta .btn-light {
  background-color: #fff;
  color: var(--accent-bg);
  font-weight: 600;
  padding: 1rem 1.5rem;
  border-radius: var(--radius-s);
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease;
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}

.partner-cta .btn-light:hover {
  background-color: var(--accent-text-on);
  color: var(--accent-bg);
  opacity: 0.9;
}

/* ================================
   Resource-blok (donkerblauw)
   ================================ */
.resource-block {
  background-color: var(--nav-bg);
  color: #fff;
  text-align: center;
  padding: var(--space-xl) var(--space-m);
}

.resource-block h2 {
  font-size: clamp(1.5rem, 1rem + 1.5vw, 2rem);
  font-weight: 600;
  margin-bottom: var(--space-m);
  color: #fff;
  line-height: 1.3;
}

.resource-block p {
  font-size: 1.1rem;
  line-height: 1.6;
  color: #fff;
  max-width: 700px;
  margin: 0 auto var(--space-l);
}

.btn-resource {
  display: inline-block;
  background-color: #fff;
  color: var(--accent-bg);
  font-weight: 600;
  padding: 1rem 1.5rem;
  border-radius: var(--radius-s);
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}

.btn-resource:hover {
  background-color: var(--accent-bg);
  color: #fff;
  text-decoration: none;
}

/* ================================
   Buttons algemeen
   ================================ */
.btn-more {
  display: inline-block;
  margin-top: var(--space-s);
  margin-bottom: var(--space-m);
  font-size: 0.95rem;
  color: var(--accent-bg);
  border: 1px solid var(--accent-bg);
  border-radius: var(--radius-s);
  padding: 0.4rem 0.8rem;
  transition: all 0.2s ease;
  background-color: transparent;
}

.btn-more:hover,
.btn-more:focus {
  background-color: var(--accent-bg);
  color: #fff;
  text-decoration: none;
}

/* ================================
   Footer
   ================================ */
.footer {
  padding: var(--space-l);
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-main);
}

.footer a {
  color: var(--accent-bg);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ================================
   Responsive
   ================================ */
@media (max-width: 900px) {
  .three-col {
    grid-template-columns: 1fr 1fr;
  }

  .cta-bottom .partner-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  /* verticale lijnen weghalen */
  .cta-bottom .partner-grid::before,
  .cta-bottom .partner-grid::after {
    display: none;
  }

  /* volgorde onder elkaar */
  .partner-logo {
    order: 1;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  .partner-text {
    order: 2;
  }

  .partner-cta {
    order: 3;
  }
}

@media (max-width: 600px) {
  .three-col { grid-template-columns: 1fr; }
  .header-logo { max-height: 50px; }
}