/* Blue Four — stylesheet voor de statische HTML-site
   Kleuren en maten komen overeen met het originele ontwerp. */

:root {
  --bg: oklch(94.4% 0.01 253.017);
  --fg: oklch(23.3% 0.067 266.595);
  --card: #ffffff;
  --primary: oklch(34.6% 0.074 256.058);
  --primary-fg: oklch(94.4% 0.01 253.017);
  --secondary: oklch(52.8% 0.096 248.829);
  --muted-fg: oklch(34.6% 0.074 256.058 / 0.7);
  --border: oklch(23.3% 0.067 266.595 / 0.1);
  --radius: 0.75rem;
  --font-sans: "DM Sans", ui-sans-serif, system-ui, sans-serif;
  --font-heading: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

main {
  flex: 1;
}

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

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

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
}

/* ---------- Layout ---------- */

.container-tight {
  width: 100%;
  max-width: 64rem;
  margin-inline: auto;
}

.section {
  padding: 4rem 1rem;
}

@media (min-width: 640px) {
  .section { padding: 5rem 1.5rem; }
}

@media (min-width: 1024px) {
  .section { padding: 6rem 2rem; }
}

.section-alt {
  background: var(--card);
}

.text-center { text-align: center; }
.muted { color: var(--muted-fg); }

.narrow {
  max-width: 42rem;
  margin-inline: auto;
}

.narrow-lg {
  max-width: 48rem;
  margin-inline: auto;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  width: 100%;
  border-bottom: 1px solid var(--border);
  background: #fff;
}

.site-header .inner {
  display: flex;
  height: 4rem;
  align-items: center;
  justify-content: space-between;
  padding-inline: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
}

.brand img { height: 2.25rem; width: auto; }

.brand span {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}

.main-nav {
  display: none;
  align-items: center;
  gap: 1.5rem;
}

.main-nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: oklch(23.3% 0.067 266.595 / 0.8);
  transition: color 0.15s;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--primary);
}

.header-cta { display: none; }

@media (min-width: 640px) {
  .main-nav { display: flex; }
  .header-cta { display: block; }
  .mobile-menu { display: none; }
}

/* Mobiel menu (werkt zonder JavaScript via <details>) */
.mobile-menu {
  position: relative;
}

.mobile-menu summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) - 2px);
}

.mobile-menu summary::-webkit-details-marker { display: none; }

.mobile-menu .menu-panel {
  position: absolute;
  right: 0;
  top: 100%;
  margin-top: 0.5rem;
  width: 12rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  padding: 0.5rem;
  box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

.mobile-menu .menu-panel a {
  display: block;
  border-radius: calc(var(--radius) - 2px);
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
}

.mobile-menu .menu-panel a:hover {
  background: var(--secondary);
  color: var(--primary-fg);
}

/* ---------- Knoppen ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  white-space: nowrap;
  border-radius: calc(var(--radius) - 2px);
  font-size: 0.875rem;
  font-weight: 500;
  font-family: var(--font-sans);
  height: 2.25rem;
  padding-inline: 1rem;
  border: 0;
  cursor: pointer;
  transition: background-color 0.15s, color 0.15s;
}

.btn svg { width: 1rem; height: 1rem; flex-shrink: 0; }

.btn-lg { height: 2.5rem; padding-inline: 2rem; }

.btn-primary {
  background: var(--primary);
  color: var(--primary-fg);
  box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
}

.btn-primary:hover { background: oklch(34.6% 0.074 256.058 / 0.9); }

.btn-outline {
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--border);
  box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
}

.btn-outline:hover {
  background: var(--secondary);
  color: var(--primary-fg);
}

/* Varianten voor donkerblauwe CTA-secties */
.btn-inverted {
  background: var(--primary-fg);
  color: var(--primary);
  box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
}

.btn-inverted:hover { background: oklch(94.4% 0.01 253.017 / 0.9); }

.btn-inverted-outline {
  background: transparent;
  color: var(--primary-fg);
  border: 1px solid oklch(94.4% 0.01 253.017 / 0.3);
}

.btn-inverted-outline:hover { background: oklch(94.4% 0.01 253.017 / 0.1); }

/* ---------- Hero ---------- */

.hero h1 {
  max-width: 48rem;
  margin-inline: auto;
  font-size: 2.25rem;
}

.hero p {
  margin-top: 1.5rem;
  font-size: 1.125rem;
}

@media (min-width: 640px) {
  .hero h1 { font-size: 3rem; }
  .hero p { font-size: 1.25rem; }
}

@media (min-width: 1024px) {
  .hero h1 { font-size: 3.75rem; }
}

.page-title h1 { font-size: 2.25rem; }

@media (min-width: 640px) {
  .page-title h1 { font-size: 3rem; }
}

h2 { font-size: 1.875rem; }

@media (min-width: 640px) {
  h2 { font-size: 2.25rem; }
}

.button-row {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

/* ---------- Kaarten en grids ---------- */

.grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

.card {
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 4px);
  background: var(--bg);
  padding: 1.5rem;
  box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
  transition: box-shadow 0.15s;
}

.card:hover { box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1); }

.card-white { background: var(--card); }

.card h3 {
  font-size: 1.125rem;
  font-weight: 600;
}

.card .card-tagline {
  margin-top: 0.75rem;
  font-weight: 500;
}

.card p.muted {
  margin-top: 0.75rem;
  font-size: 0.875rem;
}

.card-lg h3 { font-size: 1.25rem; }

.icon-badge {
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  margin-bottom: 0.75rem;
  border-radius: calc(var(--radius) - 2px);
  background: oklch(34.6% 0.074 256.058 / 0.1);
  color: var(--primary);
}

.icon-badge svg { width: 1.25rem; height: 1.25rem; }

/* ---------- Checklists en stappen ---------- */

.check-list {
  margin-top: 2rem;
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
  text-align: left;
  list-style: none;
}

.check-list li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.check-list svg {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
  color: var(--secondary);
}

.step-number {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  margin-inline: auto;
  border-radius: 50%;
  background: var(--primary);
  color: var(--primary-fg);
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
}

.step h3 {
  margin-top: 1rem;
  font-size: 1.125rem;
  font-weight: 600;
}

.step p {
  margin-top: 0.25rem;
  font-size: 0.875rem;
}

/* ---------- CTA-sectie ---------- */

.cta {
  background: var(--primary);
  color: var(--primary-fg);
}

.cta p { color: oklch(94.4% 0.01 253.017 / 0.8); }

/* ---------- Formulier ---------- */

.form-panel {
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 8px);
  background: var(--bg);
  padding: 1.5rem;
}

@media (min-width: 640px) {
  .form-panel { padding: 2rem; }
}

form .field { margin-top: 1.25rem; }

form .field-row {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 640px) {
  form .field-row { grid-template-columns: 1fr 1fr; }
}

form label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

form input,
form textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) - 2px);
  background: transparent;
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
  font-family: var(--font-sans);
  color: var(--fg);
  box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
}

form input { height: 2.25rem; }

form textarea { min-height: 7.5rem; resize: vertical; }

form input:focus-visible,
form textarea:focus-visible {
  outline: none;
  box-shadow: 0 0 0 1px var(--secondary);
}

form input::placeholder,
form textarea::placeholder { color: var(--muted-fg); }

form .form-hint {
  margin-top: 1rem;
  font-size: 0.75rem;
  color: var(--muted-fg);
}

form .form-hint a { text-decoration: underline; }

form .form-hint a:hover { color: var(--primary); }

/* ---------- Contactgegevens ---------- */

.contact-grid {
  display: grid;
  gap: 2.5rem;
}

@media (min-width: 1024px) {
  .contact-grid { grid-template-columns: 1fr 1fr; }
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 4px);
  background: var(--bg);
  padding: 1rem;
  box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
}

.contact-item + .contact-item { margin-top: 1rem; }

.contact-item .label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.025em;
  color: var(--muted-fg);
}

.contact-item .value {
  display: block;
  margin-top: 0.25rem;
  font-weight: 500;
}

a.value:hover { color: var(--primary); }

.map-frame {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 8px);
  background: var(--bg);
}

.map-frame iframe {
  display: block;
  width: 100%;
  height: 400px;
  border: 0;
  filter: grayscale(20%);
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--card);
}

.footer-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 640px) {
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .footer-grid { grid-template-columns: repeat(3, 1fr); }
}

.site-footer .brand img { height: 2rem; }

.site-footer .brand span { font-size: 1.125rem; }

.site-footer .tagline {
  margin-top: 0.75rem;
  max-width: 20rem;
  font-size: 0.875rem;
  color: var(--muted-fg);
}

.site-footer h3 {
  font-size: 0.875rem;
  font-weight: 600;
}

.site-footer ul {
  margin-top: 0.75rem;
  list-style: none;
}

.site-footer ul li + li { margin-top: 0.5rem; }

.site-footer ul a,
.site-footer address p {
  font-size: 0.875rem;
  color: var(--muted-fg);
}

.site-footer ul a:hover,
.site-footer address a:hover { color: var(--primary); }

.site-footer address {
  margin-top: 0.75rem;
  font-style: normal;
}

.site-footer address .spaced { margin-top: 0.5rem; }

.copyright {
  margin-top: 2.5rem;
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--muted-fg);
}

/* ---------- Overig ---------- */

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }
.mt-10 { margin-top: 2.5rem; }
.mt-12 { margin-top: 3rem; }

.prose p + p { margin-top: 1rem; }