/* 
==============================================
   HD Aircotechniek - Modern Design System
==============================================
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Outfit:wght@400;500;600;700&display=swap');

:root {
  /* Color Palette */
  --color-primary: #0f766e; /* Teal */
  --color-primary-hover: #115e59;
  --color-secondary: #e0f2fe; /* Light Blue/Air */
  --color-dark: #0f172a;
  --color-text: #334155;
  --color-text-light: #64748b;
  --color-bg: #f8fafc;
  --color-white: #ffffff;
  --color-border: #e2e8f0;
  
  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  
  /* Utilities */
  --container-width: 1200px;
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 15px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.08);
  --transition: all 0.3s ease;
}

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-dark);
  font-weight: 600;
  line-height: 1.2;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; margin-bottom: var(--space-md); }
h3 { font-size: 1.5rem; margin-bottom: var(--space-sm); }
p { margin-bottom: var(--space-sm); font-size: 1.125rem; color: var(--color-text); }

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

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

/* Layout Utilities */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-sm);
}

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

.section-bg-white { background-color: var(--color-white); }
.section-bg-light { background-color: var(--color-bg); }

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.125rem;
  border-radius: 50px;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 4px 14px rgba(15, 118, 110, 0.3);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(15, 118, 110, 0.4);
}

.btn-secondary {
  background-color: var(--color-white);
  color: var(--color-dark);
  border: 2px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-sm);
  padding: 0.5rem 0;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 80px;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-dark);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-icon {
  color: var(--color-primary);
  font-size: 1.8rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-heading);
  font-weight: 500;
  color: var(--color-text);
  transition: var(--transition);
  position: relative;
}

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

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width 0.3s ease;
}

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-dark);
  cursor: pointer;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-secondary) 100%);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: var(--space-lg);
  align-items: center;
}

.hero-content {
  max-width: 600px;
}

.hero-content p {
  font-size: 1.25rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
}

.hero-actions {
  display: flex;
  gap: var(--space-sm);
}

.hero-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.hero-image:hover img {
  transform: scale(1.03);
}

/* 3. Benefits Cards (Koelen, Verwarmen, Circulatie) */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.benefit-card {
  background-color: var(--color-white);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.benefit-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background-color: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
  z-index: -1;
}

.benefit-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.benefit-card:hover::before {
  transform: scaleX(1);
}

.benefit-icon {
  width: 60px;
  height: 60px;
  background-color: var(--color-secondary);
  color: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: var(--space-sm);
}

/* Split Content Section (Waarom, Hoe werkt) */
.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.split-section.reverse {
  direction: rtl;
}

.split-section.reverse > * {
  direction: ltr;
}

.split-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.split-content p {
  color: var(--color-text-light);
}

/* Calculation Banner / Which Airco */
.calc-card {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  margin-top: var(--space-md);
  position: relative;
  overflow: hidden;
}

.calc-card h3 {
  color: var(--color-white);
}

.calc-card p {
  color: rgba(255,255,255,0.9);
}

.calc-highlight {
  background: rgba(255,255,255,0.1);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  margin-top: var(--space-md);
  border: 1px solid rgba(255,255,255,0.2);
}

.calc-highlight strong {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: #fff;
  display: block;
  margin-top: 0.5rem;
}

/* Brands & Pricing */
.brands-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--space-md);
}

.brand-card {
  background: var(--color-bg);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  text-align: center;
  border: 1px solid var(--color-border);
}

.brand-card h3 {
  color: var(--color-primary);
  font-size: 2rem;
}

.pricing-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.price-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
}

.price-card .price {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-dark);
  margin: var(--space-sm) 0;
}

.price-card .price span {
  font-size: 1rem;
  color: var(--color-text-light);
  font-weight: 400;
}

/* FAQ Accordion */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
  background: var(--color-white);
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 1.25rem;
  background: none;
  border: none;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--color-dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-icon {
  font-size: 1.5rem;
  transition: var(--transition);
  color: var(--color-primary);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.35s ease-out;
}

.faq-answer-inner {
  overflow: hidden;
}

.faq-answer-inner p {
  padding: 0 1.25rem 1.25rem 1.25rem;
  margin: 0;
  color: var(--color-text-light);
  line-height: 1.6;
}

.faq-item.active .faq-answer {
  grid-template-rows: 1fr;
}

/* Portfolio Gallery */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.portfolio-item {
  border-radius: var(--radius-sm);
  overflow: hidden;
  aspect-ratio: 4/3;
  position: relative;
}

.portfolio-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.portfolio-item:hover img {
  transform: scale(1.05);
}

/* Contact Details */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
  margin-top: var(--space-md);
}

.contact-info h2, .contact-info h3 {
  color: var(--color-white);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
  font-size: 1.125rem;
}

.contact-item i {
  font-size: 1.5rem;
  color: var(--color-secondary);
}

/* Footer */
.footer {
  background-color: var(--color-dark);
  color: var(--color-white);
  padding: var(--space-lg) 0 var(--space-sm);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.footer h4 {
  color: var(--color-white);
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.footer p, .footer a {
  color: #94a3b8;
  font-size: 0.95rem;
  transition: var(--transition);
}

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

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--space-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

/* Animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease-out;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

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

@media (max-width: 768px) {
  .nav-links {
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background: var(--color-white);
    flex-direction: column;
    padding: var(--space-md);
    gap: 1rem;
    box-shadow: var(--shadow-md);
    clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
    transition: clip-path 0.3s ease-out;
  }
  
  .nav-links.active {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  }

  .mobile-menu-btn {
    display: block;
  }
  
  .hero {
    padding-top: 100px;
    text-align: center;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .hero-image {
    order: -1;
  }
}

/* Fix for Legal Page */
.legal-content {
  padding: 120px 0 var(--space-xl);
  max-width: 800px;
  margin: 0 auto;
}

.legal-content h1 {
  margin-bottom: var(--space-md);
}

.legal-content h2, .legal-content h3 {
  margin-top: var(--space-md);
  margin-bottom: var(--space-sm);
}

.legal-content p, .legal-content li {
  margin-bottom: 1rem;
  color: var(--color-text);
}