/* =========================================
   Variables
   ========================================= */

html,
body{
  position: relative;
  width: 100%;
  overflow-x: hidden;
}
:root {
  /* Color palette */
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;

  --color-background: var(--gray-50);
  --color-surface: #ffffff;
  --color-text: var(--gray-900);
  --color-primary: #2563eb; /* trustworthy blue */
  --color-primary-hover: #1d4ed8;
  --color-primary-contrast: #ffffff;
  --color-success: #16a34a;
  --color-warning: #d97706;
  --color-danger: #dc2626;

  /* Typography */
  --font-sans: system-ui, -apple-system, 'Segoe UI', Roboto, Inter, 'Helvetica Neue', Arial, 'Noto Sans', 'Apple Color Emoji', 'Segoe UI Emoji', sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;

  --text-xs: 12px;
  --text-sm: 14px;
  --text-base: 16px;
  --text-lg: 18px;
  --text-xl: 20px;

  --lh-body: 1.65;
  --lh-heading: 1.2;

  /* Heading sizes (fluid) */
  --h1-size: clamp(2rem, 2.2vw + 1.4rem, 3rem);
  --h2-size: clamp(1.75rem, 1.6vw + 1.1rem, 2.25rem);
  --h3-size: clamp(1.5rem, 1.2vw + 0.9rem, 1.75rem);
  --h4-size: 1.25rem;
  --h5-size: 1.125rem;
  --h6-size: 1rem;

  /* Spacing scale (0–96px, step 4px) */
  --space-0: 0;
  --space-4: 4px;
  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-28: 28px;
  --space-32: 32px;
  --space-36: 36px;
  --space-40: 40px;
  --space-44: 44px;
  --space-48: 48px;
  --space-52: 52px;
  --space-56: 56px;
  --space-60: 60px;
  --space-64: 64px;
  --space-68: 68px;
  --space-72: 72px;
  --space-76: 76px;
  --space-80: 80px;
  --space-84: 84px;
  --space-88: 88px;
  --space-92: 92px;
  --space-96: 96px;

  /* Radius */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-round: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06), 0 1px 1px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 10px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.12);

  /* Transitions */
  --duration-fast: 120ms;
  --duration-normal: 200ms;
  --duration-slow: 320ms;
  --easing-standard: cubic-bezier(0.2, 0, 0, 1);

  /* Layout */
  --container-max: 1200px;
  --container-padding: var(--space-12);
}

@media (min-width: 640px) {
  :root { --container-padding: var(--space-16); }
}
@media (min-width: 1024px) {
  :root { --container-max: 1280px; }
}

/* Optional dark scheme variables if user prefers */
@media (prefers-color-scheme: dark) {
  :root {
    --color-background: #0b1220;
    --color-surface: #0f172a;
    --color-text: #e5e7eb;

    --gray-50: #0b1220;
    --gray-100: #0f172a;
    --gray-200: #111827;
    --gray-300: #1f2937;
    --gray-400: #374151;
    --gray-500: #4b5563;
    --gray-600: #6b7280;
    --gray-700: #9ca3af;
    --gray-800: #d1d5db;
    --gray-900: #f3f4f6;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 6px 12px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 14px 28px rgba(0, 0, 0, 0.5);
  }
}

/* =========================================
   Reset / Normalize
   ========================================= */
* {
  box-sizing: border-box;
}
*::before,
*::after {
  box-sizing: inherit;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body,
h1,
h2,
h3,
h4,
h5,
h6,
p,
figure,
blockquote,
dl,
dd {
  margin: 0;
}

ul[role='list'],
ol[role='list'] { list-style: none; margin: 0; padding: 0; }

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input,
button,
textarea,
select {
  font: inherit;
}

/* Improve text rendering */
body {
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* =========================================
   Base
   ========================================= */
body {
  min-height: 100vh;
  background-color: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--lh-body);
}

::selection {
  background: rgba(37, 99, 235, 0.18);
  color: inherit;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
  line-height: var(--lh-heading);
  font-weight: 700;
  letter-spacing: -0.01em;
}

h1 { font-size: var(--h1-size); margin-block: var(--space-24) var(--space-12); }
h2 { font-size: var(--h2-size); margin-block: var(--space-24) var(--space-12); }
h3 { font-size: var(--h3-size); margin-block: var(--space-20) var(--space-12); }
h4 { font-size: var(--h4-size); margin-block: var(--space-16) var(--space-8); }
h5 { font-size: var(--h5-size); margin-block: var(--space-12) var(--space-8); }
h6 { font-size: var(--h6-size); margin-block: var(--space-8) var(--space-8); }

/* Paragraphs */
p {
  max-width: 70ch; /* comfortable line length */
  margin-block: var(--space-12);
}

/* Links */
a {
  color: var(--color-primary);
  text-decoration: none;
  text-underline-offset: 2px;
  text-decoration-skip-ink: auto;
  transition: color var(--duration-normal) var(--easing-standard);
}
a:hover { color: var(--color-primary-hover); text-decoration: underline; }
a:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-xs);
}

/* Smooth, accessible focus for all focusable */
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* =========================================
   Utilities
   ========================================= */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
  width: 100%;
}

.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }

.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }

.gap-0 { gap: var(--space-0); }
.gap-sm { gap: var(--space-12); }
.gap-md { gap: var(--space-16); }
.gap-lg { gap: var(--space-24); }
.gap-xl { gap: var(--space-32); }

.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* =========================================
   Components
   ========================================= */
/* Buttons */
.btn {
  --btn-bg: var(--color-primary);
  --btn-color: var(--color-primary-contrast);
  --btn-border: transparent;

  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  padding: calc(var(--space-12) - 2px) var(--space-20);
  border: 1px solid var(--btn-border);
  border-radius: var(--radius-md);
  background: var(--btn-bg);
  color: var(--btn-color);
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--duration-normal) var(--easing-standard),
              color var(--duration-normal) var(--easing-standard),
              box-shadow var(--duration-fast) var(--easing-standard),
              transform var(--duration-fast) var(--easing-standard);
}
.btn:hover { filter: brightness(0.98); }
.btn:active { transform: translateY(0.5px); }
.btn:disabled,
.btn[aria-disabled='true'] {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}
.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.35);
}

.btn--primary { --btn-bg: var(--color-primary); --btn-color: var(--color-primary-contrast); --btn-border: transparent; }
.btn--primary:hover { background: var(--color-primary-hover); }

.btn--secondary { --btn-bg: var(--gray-100); --btn-color: var(--color-text); --btn-border: var(--gray-300); }
.btn--secondary:hover { --btn-bg: var(--gray-200); }

.btn--danger { --btn-bg: var(--color-danger); --btn-color: #fff; --btn-border: transparent; }
.btn--danger:hover { filter: brightness(0.96); }

/* Inputs */
.input,
select,
textarea,
input[type='text'],
input[type='email'],
input[type='password'],
input[type='search'],
input[type='tel'],
input[type='url'],
input[type='number'] {
  display: block;
  width: 100%;
  padding: var(--space-12) var(--space-12);
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  transition: border-color var(--duration-fast) var(--easing-standard),
              box-shadow var(--duration-fast) var(--easing-standard),
              background-color var(--duration-fast) var(--easing-standard);
}

input::placeholder,
textarea::placeholder { color: var(--gray-500); }

.input:focus,
select:focus,
textarea:focus,
input[type='text']:focus,
input[type='email']:focus,
input[type='password']:focus,
input[type='search']:focus,
input[type='tel']:focus,
input[type='url']:focus,
input[type='number']:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.25);
}

input:disabled,
select:disabled,
textarea:disabled {
  background-color: var(--gray-100);
  cursor: not-allowed;
}

/* Card */
.card {
  background: var(--color-surface);
  color: inherit;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-24);
}

.card--interactive {
  transition: box-shadow var(--duration-normal) var(--easing-standard), transform var(--duration-normal) var(--easing-standard);
}
.card--interactive:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* =========================================
   Header & Footer styles (from home.css)
   ========================================= */

.site-header {
  box-shadow: var(--shadow-sm);
  background: var(--color-surface);
  position: sticky;
  top: 0;
  z-index: 60;
  min-height: 64px;
}

.site-logo .logo-text {
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--color-primary);
}

/* Navigation */
nav#main-nav { position: relative; }
.nav-menu {
  display: flex;
  gap: var(--space-20);
  list-style: none;
  align-items: center;
}
@media (max-width: 900px) {
  .nav-menu {
    gap: var(--space-12);
  }
}
@media (max-width: 720px) {
  .nav-menu {
    position: absolute;
    right: 0;
    top: 60px;
    left: 0;
    background: var(--color-surface);
    border-top: 1px solid var(--gray-200);
    box-shadow: var(--shadow-md);
    flex-direction: column;
    gap: 0;
    padding: var(--space-16) 0;
    display: none;
  }
  nav[aria-label="Hoofdmenu"][data-open="true"] .nav-menu {
    display: flex;
  }
}
/* Hamburger button */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: var(--space-8);
  cursor: pointer;
}
.nav-toggle:focus-visible {
  outline: 3px solid var(--color-primary);
  border-radius: var(--radius-md);
}
.nav-toggle-icon {
  width: 28px;
  height: 3px;
  background: var(--color-primary);
  display: block;
  position: relative;
  border-radius: 2px;
  transition: all .32s var(--easing-standard);
}
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 28px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: all .32s var(--easing-standard);
}
.nav-toggle-icon::before { top: -9px; }
.nav-toggle-icon::after { top: 9px; }
@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .nav-menu { width: 100vw; }
}

/* Collapse hamburger into X on open */
nav[aria-label="Hoofdmenu"][data-open="true"] .nav-toggle-icon {
  background: transparent;
}
nav[aria-label="Hoofdmenu"][data-open="true"] .nav-toggle-icon::before {
  top: 0; transform: rotate(45deg);
}
nav[aria-label="Hoofdmenu"][data-open="true"] .nav-toggle-icon::after {
  top: 0; transform: rotate(-45deg);
}

/* Footer styles */
.site-footer {
  background: var(--gray-100);
  padding-top: var(--space-32);
  padding-bottom: var(--space-12);
  margin-top: var(--space-56);
  border-top: 1px solid var(--gray-200);
}
.footer-content {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-24);
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-16);
}
.footer-brand {
  font-weight: 700;
  font-size: var(--h4-size);
}
.footer-nav ul, .footer-legal ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}
.footer-nav a, .footer-legal a {
  color: var(--color-text);
  font-size: var(--text-base);
}
.footer-nav a:hover, .footer-legal a:hover {
  color: var(--color-primary);
}
.footer-legal-link { font-size: var(--text-sm); }
.copyright {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--gray-500);
}
@media (max-width: 700px) {
  .footer-content {
    flex-direction: column;
    gap: var(--space-20);
    align-items: flex-start;
  }
}

/* Cookie Consent Banner */
.cookie-banner {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  background: var(--color-surface);
  border-top: 1px solid var(--gray-200);
  box-shadow: 0 -4px 20px 0 rgba(16,16,38,.08);
  padding: 0;
  display: none;
}
.cookie-banner[aria-modal="true"] {
  display: block;
}
.cookie-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-16);
  max-width: var(--container-max);
  margin-inline: auto;
  padding: var(--space-16) var(--container-padding);
}
.cookie-text {
  font-size: var(--text-base);
  color: var(--color-text);
}
.cookie-actions {
  display: flex;
  gap: var(--space-8);
}
@media (max-width: 500px) {
  .cookie-container {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-8);
    padding: var(--space-12) var(--container-padding);
  }
  .cookie-actions { width: 100%; }
}

/* Visually distinguish links in content */
.card a:not(.btn), .newsletter-signup a:not(.btn), .cookie-text a {
  color: var(--color-primary);
  text-decoration: underline;
  font-weight: 500;
}
.card a:not(.btn):hover, .newsletter-signup a:not(.btn):hover,
.cookie-text a:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

/* Utility override: container vertical spacing */
.container {
  margin-bottom: var(--space-36);
}

/* =========================================
   Accessibility & Motion
   ========================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}
@media (max-width: 720px) {
  .nav-menu {
    position: fixed;
    top: 60px;
    left: -200%;
    background: var(--color-surface);
    border-top: 1px solid var(--gray-200);
    box-shadow: var(--shadow-md);
    flex-direction: column;
    gap: 0;
    padding: var(--space-16) 0;
    transition: 0.35s;
  }
  nav[data-open="false"] .nav-menu{
    right: inherit;
  }
  nav[data-open="true"] .nav-menu {
    left: 0;
    right: inherit;
  }
  .grid-3 {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }
}