/* ===================================
   N-TECH BV - MAIN STYLESHEET
   Industrieel design met metaal-look
   Geïnspireerd op het N-TECH logo
   =================================== */

/* ==================== ROOT VARIABLES ==================== */
:root {
  /* Kleurenpalet gebaseerd op N-TECH logo */
  --primary-blue: #2c5f7d;      /* Donkerblauw uit logo */
  --primary-teal: #5ba4b8;      /* Teal/lichtblauw uit logo */
  --accent-light: #a8d5e2;      /* Licht blauw accent */
  --neutral-light: #e8f4f8;     /* Zeer licht blauw/wit */
  --neutral-white: #ffffff;
  --text-dark: #1a3a4a;
  --text-medium: #4a6a7a;
  --text-light: #7a9aaa;
  
  /* Metaal effecten */
  --metal-gradient: linear-gradient(135deg, #2c5f7d 0%, #5ba4b8 50%, #2c5f7d 100%);
  --metal-shadow: 0 4px 6px rgba(44, 95, 125, 0.1), 0 1px 3px rgba(44, 95, 125, 0.08);
  --metal-shadow-lg: 0 10px 25px rgba(44, 95, 125, 0.15), 0 6px 12px rgba(44, 95, 125, 0.1);
  
  /* Typografie */
  --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-heading: 'Arial Black', 'Arial Bold', sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  
  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ==================== RESET & BASE ==================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

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

/* ==================== TYPOGRAPHY ==================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.3;
  color: var(--primary-blue);
  margin-bottom: var(--spacing-sm);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: var(--spacing-sm);
  color: var(--text-medium);
}

a {
  text-decoration: none;
  color: var(--primary-teal);
  transition: color var(--transition-fast);
}

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

/* ==================== HEADER ==================== */
.header {
  background: var(--metal-gradient);
  box-shadow: var(--metal-shadow-lg);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: var(--spacing-sm) 0;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo {
  height: 60px;
  width: auto;
  border-radius: var(--radius-sm);
  box-shadow: var(--metal-shadow);
  transition: transform var(--transition-normal);
}

.logo:hover {
  transform: scale(1.05);
}

.logo-text {
  color: var(--neutral-white);
  font-size: 1.5rem;
  font-weight: bold;
  letter-spacing: 1px;
}

/* ==================== NAVIGATION ==================== */
.nav {
  display: flex;
  gap: var(--spacing-xs);
}

.nav-link {
  color: var(--neutral-white);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--neutral-white);
  transform: translateX(-100%);
  transition: transform var(--transition-normal);
}

.nav-link:hover::before,
.nav-link.active::before {
  transform: translateX(0);
}

.nav-link:hover,
.nav-link.active {
  color: var(--neutral-white);
  background: rgba(255, 255, 255, 0.1);
}

/* Mobile menu toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1001;
  position: relative;
}

.mobile-menu-toggle:hover {
  opacity: 0.8;
}

/* Hamburger icon */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 21px;
}

.hamburger span {
  display: block;
  height: 3px;
  width: 100%;
  background: var(--neutral-white);
  border-radius: 2px;
  transition: all var(--transition-normal);
}

/* Hamburger animation when active */
.mobile-menu-toggle.active .hamburger span:nth-child(1) {
  transform: rotate(45deg) translate(7px, 7px);
}

.mobile-menu-toggle.active .hamburger span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active .hamburger span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* Menu overlay */
.menu-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.menu-overlay.active {
  display: block;
  opacity: 1;
}

/* ==================== HERO SECTION ==================== */
.hero {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-teal) 100%);
  color: var(--neutral-white);
  padding: var(--spacing-xl) var(--spacing-md);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 10px,
    rgba(255, 255, 255, 0.03) 10px,
    rgba(255, 255, 255, 0.03) 20px
  );
  pointer-events: none;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero h1 {
  color: var(--neutral-white);
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero p {
  color: var(--neutral-light);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* ==================== BUTTONS ==================== */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 2px solid transparent;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.95rem;
}

.btn-primary {
  background: var(--neutral-white);
  color: var(--primary-blue);
  box-shadow: var(--metal-shadow);
}

.btn-primary:hover {
  background: var(--neutral-light);
  transform: translateY(-2px);
  box-shadow: var(--metal-shadow-lg);
}

.btn-secondary {
  background: transparent;
  color: var(--neutral-white);
  border-color: var(--neutral-white);
}

.btn-secondary:hover {
  background: var(--neutral-white);
  color: var(--primary-blue);
}

.btn-group {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* ==================== SECTIONS ==================== */
.section {
  padding: var(--spacing-xl) var(--spacing-md);
}

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

.section-dark {
  background: var(--neutral-light);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-lg);
  position: relative;
  padding-bottom: var(--spacing-sm);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: var(--metal-gradient);
  border-radius: 2px;
}

/* ==================== CARDS ==================== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.card {
  background: var(--neutral-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--metal-shadow);
  transition: all var(--transition-normal);
  border: 1px solid var(--accent-light);
}

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

.card-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
  text-align: center;
  color: var(--primary-teal);
  font-weight: bold;
}

.card h3 {
  color: var(--primary-blue);
  margin-bottom: var(--spacing-sm);
  text-align: center;
}

.card p {
  color: var(--text-medium);
  text-align: center;
}

/* ==================== COMPANY INFO ==================== */
.company-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.info-box {
  background: var(--neutral-white);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  box-shadow: var(--metal-shadow);
  border-left: 4px solid var(--primary-teal);
}

.info-box h3 {
  color: var(--primary-blue);
  margin-bottom: var(--spacing-sm);
}

.info-box p {
  color: var(--text-medium);
  line-height: 1.8;
}

/* ==================== CONTACT FORM ==================== */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.contact-info-box {
  background: var(--neutral-light);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--primary-blue);
}

.contact-item {
  margin-bottom: var(--spacing-md);
}

.contact-item strong {
  color: var(--primary-blue);
  display: block;
  margin-bottom: var(--spacing-xs);
}

.contact-item a {
  color: var(--primary-teal);
  font-weight: 500;
}

.contact-form {
  background: var(--neutral-white);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  box-shadow: var(--metal-shadow);
}

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

.form-group label {
  display: block;
  color: var(--primary-blue);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border: 2px solid var(--accent-light);
  border-radius: var(--radius-sm);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-teal);
}

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

.alert {
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
}

.alert-success {
  background: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

/* ==================== FOOTER ==================== */
.footer {
  background: var(--metal-gradient);
  color: var(--neutral-white);
  padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
  text-align: center;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
}

.footer p {
  color: var(--neutral-light);
  margin-bottom: var(--spacing-xs);
}

.footer-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.2);
  margin: var(--spacing-md) 0;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
  /* Header blijft horizontaal */
  .header-container {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: 0;
  }
  
  /* Logo container blijft aan de linkerkant */
  .logo-container {
    flex: 0 0 auto;
  }
  
  /* Logo text kleiner op mobile */
  .logo-text {
    font-size: 1.2rem;
  }
  
  /* BELANGRIJK: Toon hamburger menu op mobile */
  .mobile-menu-toggle {
    display: block !important;
    order: 3;
  }
  
  /* BELANGRIJK: Verberg navigatie VOLLEDIG op mobile */
  .nav {
    display: none;
    position: fixed;
    top: 0;
    left: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background: var(--primary-blue);
    flex-direction: column;
    padding: 5rem 0 1rem;
    transition: left var(--transition-normal);
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    overflow-y: auto;
    gap: 0;
  }
  
  /* Toon navigatie wanneer active */
  .nav.active {
    display: flex !important;
    left: 0;
  }
  
  /* Nav links fullwidth op mobile */
  .nav-link {
    text-align: left;
    width: 100%;
    padding: 1rem 1.5rem;
    border-radius: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  
  .nav-link:last-child {
    border-bottom: none;
  }
  
  .nav-link::before {
    display: none;
  }
  
  .nav-link:hover,
  .nav-link.active {
    background: rgba(255, 255, 255, 0.15);
  }
  
  /* Rest van responsive styles */
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  .cards-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-content {
    grid-template-columns: 1fr;
  }
  
  .company-info {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  :root {
    font-size: 14px;
  }
  
  .logo-text {
    font-size: 1rem;
  }
  
  .section {
    padding: var(--spacing-md) var(--spacing-sm);
  }
}

/* ==================== UTILITIES ==================== */
.text-center {
  text-align: center;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

/* ==================== ANIMATIONS ==================== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease forwards;
}