/*
  EnergieAnalyse Nederland - Stijlblad
  Stijl: Institutioneel, minimalistisch, professioneel
*/

:root {
  --primary-color: #003366; /* Diep Marineblauw */
  --accent-color: #5A9BD5; /* Zacht Institutioneel Blauw */
  --secondary-color: #6B8EAD; /* Gedempt Blauw */
  --bg-color: #F5F5F5; /* Licht Neutraal Grijs */
  --text-color: #333333; /* Donker Neutraal Grijs */
  --text-light: #FFFFFF;
  --text-muted: #6c757d;
  --border-color: #dee2e6;
  --header-height: 80px;

  --font-family: 'Open Sans', 'Lato', 'Roboto', sans-serif;
  --spacing-xs: 4px;
  --spacing-s: 8px;
  --spacing-m: 16px;
  --spacing-l: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  --spacing-xxxl: 64px;
  --section-padding: clamp(60px, 10vw, 100px);
}

/* --- Basis Reset en Setup --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Typografie --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  color: var(--primary-color);
}

h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); margin-bottom: var(--spacing-xl); }
h3 { font-size: clamp(1.3rem, 3vw, 1.8rem); margin-bottom: var(--spacing-m); }
p { margin-bottom: var(--spacing-m); max-width: 75ch; }
a { color: var(--accent-color); text-decoration: none; transition: color 0.3s ease; }
a:hover { color: var(--primary-color); }
ul { list-style: none; }
strong { font-weight: 600; color: var(--primary-color); }

/* --- Globale Klassen --- */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

.section {
  padding: var(--section-padding) 0;
}

.section-bg {
  background-color: #FFFFFF;
}

.text-center {
  text-align: center;
}

.desaturated-img {
  filter: grayscale(80%) sepia(10%);
  transition: filter 0.3s ease;
}

.desaturated-img:hover {
  filter: grayscale(0%) sepia(0%);
}

/* --- Header & Navigatie --- */
.main-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: #ffffffe6;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

.nav-links {
  display: flex;
  gap: var(--spacing-xl);
}

.nav-links a {
  font-weight: 600;
  color: var(--text-color);
  position: relative;
  padding: var(--spacing-s) 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-color);
  transition: width 0.3s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-links a.active {
  color: var(--primary-color);
}

.mobile-toggle {
  display: none;
  font-size: 2rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--primary-color);
}

/* --- Hero Sectie (Uniform) --- */
.hero {
  position: relative;
  height: 450px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--text-light);
  background: url('https://images.pexels.com/photos/32399132/pexels-photo-32399132.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=650&w=940') no-repeat center center/cover;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--primary-color);
  opacity: 0.8;
  filter: grayscale(1);
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-content h1 {
  color: var(--text-light);
  max-width: 900px;
}

/* --- Breadcrumbs --- */
.breadcrumbs {
  padding: var(--spacing-m) 0;
  background-color: #e9ecef;
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  font-size: 0.9rem;
}

.breadcrumbs li + li::before {
  content: '/';
  margin: 0 var(--spacing-s);
  color: var(--text-muted);
}

.breadcrumbs .active {
  color: var(--text-muted);
  font-weight: normal;
}

/* --- Footer --- */
.main-footer {
  background-color: var(--primary-color);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--spacing-xxxl) 0;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xxl);
}

.footer-col h4 {
  color: var(--text-light);
  font-size: 1.1rem;
  margin-bottom: var(--spacing-l);
  font-weight: 600;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.8);
  display: block;
  margin-bottom: var(--spacing-s);
}

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

.footer-bottom {
  margin-top: var(--spacing-xxxl);
  padding-top: var(--spacing-l);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  text-align: center;
}

/* --- Specifieke Sectie Stijlen --- */
.text-link-section ul {
  list-style: none;
  padding-left: 0;
}

.text-link-section li {
  margin-bottom: var(--spacing-m);
}

.text-link-section a {
  font-size: 1.2rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  transition: transform 0.3s ease;
}

.text-link-section a:hover {
  transform: translateX(10px);
}

.text-link-section a::before {
  content: '→';
  margin-right: var(--spacing-m);
  color: var(--accent-color);
}

.highlight-points li {
  padding-left: var(--spacing-l);
  position: relative;
  margin-bottom: var(--spacing-m);
}

.highlight-points li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent-color);
  font-weight: bold;
}

.long-form-content p {
  margin-bottom: var(--spacing-l);
}
.long-form-content h3 {
  margin-top: var(--spacing-xxl);
}

/* Structuurdiagram */
.structure-diagram {
  border: 1px solid var(--border-color);
  padding: var(--spacing-xl);
  background: #fff;
  filter: grayscale(80%) sepia(10%);
  text-align: center;
}
.diagram-title {
  font-weight: bold;
  margin-bottom: var(--spacing-l);
}
.diagram-level {
  border: 1px solid var(--secondary-color);
  border-radius: 4px;
  padding: var(--spacing-m);
  margin: var(--spacing-l) auto;
  max-width: 80%;
}
.diagram-arrow {
  font-size: 2rem;
  color: var(--secondary-color);
}


/* --- Contact Pagina & Formulier --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--spacing-xxxl);
  align-items: flex-start;
}

.contact-info-item {
  display: flex;
  gap: var(--spacing-m);
  margin-bottom: var(--spacing-l);
}

.contact-info-item i {
  font-size: 1.5rem;
  color: var(--accent-color);
  margin-top: 5px;
}

.contact-form .form-group {
  margin-bottom: var(--spacing-l);
}

.contact-form input, .contact-form textarea {
  width: 100%;
  padding: var(--spacing-m);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-family: var(--font-family);
  font-size: 1rem;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.contact-form input:focus, .contact-form textarea:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(90, 155, 213, 0.25);
}

.contact-form textarea {
  min-height: 150px;
  resize: vertical;
}

.btn-submit {
  background-color: var(--primary-color);
  color: var(--text-light);
  padding: var(--spacing-m) var(--spacing-xl);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  transition: background-color 0.3s ease;
}

.btn-submit:hover {
  background-color: var(--accent-color);
}

.form-disclaimer {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: var(--spacing-m);
  font-style: italic;
}

.map-container {
  width: 100%;
  height: 450px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  margin-top: var(--spacing-xxl);
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: none;
  filter: grayscale(1);
}

/* --- Bedankpagina & 404 --- */
.utility-page-section {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 20px;
}

.utility-icon {
  width: 80px;
  height: 80px;
  background: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 30px;
}

.utility-icon svg {
  width: 40px;
  height: 40px;
  color: white;
}

.btn-home {
  background-color: var(--primary-color);
  color: var(--text-light);
  padding: var(--spacing-m) var(--spacing-xl);
  border-radius: 4px;
  font-weight: 600;
  display: inline-block;
}

.btn-home:hover {
  background-color: var(--accent-color);
  color: var(--text-light);
}

/* --- Cookie Banner --- */
#cookie-banner {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: rgba(0, 26, 51, 0.95);
  color: white;
  padding: var(--spacing-l);
  z-index: 9999;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-l);
  font-size: 0.9rem;
  flex-wrap: wrap;
}

#cookie-banner p {
  margin: 0;
  flex-grow: 1;
}

.cookie-buttons {
  display: flex;
  gap: var(--spacing-m);
  flex-shrink: 0;
}

.cookie-btn {
  padding: var(--spacing-s) var(--spacing-m);
  cursor: pointer;
  border-radius: 4px;
  border: none;
  font-weight: 600;
}

.cookie-accept {
  background-color: var(--accent-color);
  color: white;
}

.cookie-decline {
  background-color: transparent;
  color: white;
  border: 1px solid white;
}

/* --- Scroll-to-Top Knop --- */
.scroll-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s, background-color 0.3s;
}

.scroll-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-to-top:hover {
  background-color: var(--accent-color);
}


/* --- Responsive Ontwerp --- */
@media (max-width: 992px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: var(--header-height);
    right: -100%;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background-color: #ffffff;
    flex-direction: column;
    align-items: center;
    padding-top: var(--spacing-xxxl);
    gap: var(--spacing-xxl);
    transition: right 0.4s ease-in-out;
  }
  
  .nav-links.open {
    right: 0;
  }
  
  .nav-links a {
    font-size: 1.5rem;
  }

  .mobile-toggle {
    display: block;
  }

  .hero {
      height: 350px;
  }

  .hero-content h1 {
      font-size: 1.8rem;
  }

  #cookie-banner {
    flex-direction: column;
    text-align: center;
  }
}