/* ============================================
   CSS Variables - Eco-Tech Minimalism Theme
   ============================================ */

:root {
  /* Colors - Eco-Tech + Modern Lab Palette */
  --color-primary: #253037;
  --color-secondary: #B9CABF;
  --color-accent: #D9A45B;
  --color-bg-primary: #F8FAF8;
  --color-bg-secondary: #ECE3D3;
  --color-text-primary: #253037;
  --color-text-secondary: #8A8F94;
  --color-white: #FFFFFF;
  
  /* Typography */
  --font-primary: 'Satoshi', 'Graphik', 'Neue Haas Grotesk', sans-serif;
  --font-body: 'IBM Plex Sans', 'Source Sans 3', 'Avenir Next', sans-serif;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-xxl: 4rem;
  
  /* Border & Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --border-width: 1px;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(37, 48, 55, 0.08);
  --shadow-md: 0 4px 12px rgba(37, 48, 55, 0.12);
  --shadow-lg: 0 8px 24px rgba(37, 48, 55, 0.16);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Layout */
  --max-width: 1200px;
  --header-height: 80px;
}

/* ============================================
   Reset & Base Styles
   ============================================ */

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

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
}

p {
  margin-bottom: var(--space-md);
  color: var(--color-text-secondary);
}

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

a:hover {
  color: var(--color-accent);
}

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

/* ============================================
   Header & Navigation
   ============================================ */

.site-header {
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  position: relative;
  z-index: 1000;
  transition: transform var(--transition-base);
}

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

.brand-text {
  font-family: var(--font-primary);
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-lg);
  align-items: center;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  padding: var(--space-sm) 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-base);
}

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

.burger-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  font-size: 1.5rem;
  color: var(--color-primary);
}

/* ============================================
   Main Content
   ============================================ */

main {
  min-height: calc(100vh - 200px);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

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

.section-title {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-subtitle {
  text-align: center;
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 700px;
  margin: 0 auto var(--space-xl);
}

/* ============================================
   Hero Section
   ============================================ */

.hero-section {
  position: relative;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
  padding: var(--space-xxl) var(--space-lg);
  text-align: center;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(248, 250, 248, 0.75);
  z-index: 0;
}

.hero-content {
  max-width: 800px;
  z-index: 1;
  position: relative;
}

.hero-title {
  margin-bottom: var(--space-lg);
  color: var(--color-primary);
  text-shadow: 0 2px 4px rgba(255, 255, 255, 0.8);
}

.hero-description {
  font-size: 1.125rem;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xl);
  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
}

.hero-image {
  width: 100%;
  max-width: 1000px;
  margin: var(--space-xl) auto 0;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* ============================================
   Grid Layouts
   ============================================ */

.grid-two {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
  margin: var(--space-xl) 0;
}

.grid-three {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}

.grid-four {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}

/* ============================================
   Cards & Components
   ============================================ */

.card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-md);
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.card-description {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.card-price {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-top: var(--space-md);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-block;
  padding: var(--space-md) var(--space-xl);
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
    color: white;
  background-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

/* ============================================
   Forms
   ============================================ */

.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--space-sm);
  font-weight: 500;
  color: var(--color-text-primary);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-md);
  border: 1px solid var(--color-secondary);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

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

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

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.form-checkbox input {
  margin-top: 4px;
  cursor: pointer;
}

.form-checkbox label {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* ============================================
   Footer
   ============================================ */

.site-footer {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-xl) 0 var(--space-lg);
  margin-top: var(--space-xxl);
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

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

.footer-section h3 {
  color: var(--color-white);
  margin-bottom: var(--space-md);
  font-size: 1.125rem;
}

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

.footer-menu li {
  margin-bottom: var(--space-sm);
}

.footer-menu a {
  color: var(--color-bg-secondary);
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  text-align: center;
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.875rem;
  color: var(--color-bg-secondary);
}

/* ============================================
   Privacy Popup
   ============================================ */

.privacy-popup {
  display: none;
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  max-width: 400px;
  background: var(--color-white);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 10000;
  animation: slideUp 0.3s ease;
}

.privacy-popup.active {
  display: block;
}

@keyframes slideUp {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.privacy-popup-content {
  margin-bottom: var(--space-md);
}

.privacy-popup-actions {
  display: flex;
  gap: var(--space-md);
}

/* ============================================
   Map Container
   ============================================ */

.map-container {
  width: 100%;
  height: 400px;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: var(--space-xl) 0;
  box-shadow: var(--shadow-md);
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* ============================================
   Special Sections
   ============================================ */

.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
  margin: var(--space-xl) 0;
}

.image-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-md);
  margin: var(--space-xl) 0;
}

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

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.info-card {
  background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-white) 100%);
  border-radius: var(--radius-lg);
  margin: var(--space-lg) 0;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-xl) 0;
  background: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.comparison-table th,
.comparison-table td {
  padding: var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--color-secondary);
}

.comparison-table th {
  background-color: var(--color-primary);
  color: var(--color-white);
  font-weight: 600;
}

.comparison-table tr:hover {
  background-color: var(--color-bg-secondary);
}

.badge {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  background-color: var(--color-secondary);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  margin: var(--space-xs);
}

.date {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  font-style: italic;
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
  :root {
    --space-xl: 2rem;
    --space-xxl: 3rem;
  }
  
  .burger-toggle {
    display: block;
  }
  
  .nav-menu {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    z-index: 999;
  }
  
  .nav-menu.active {
    transform: translateX(0);
  }
  
  .split-section {
    grid-template-columns: 1fr;
  }
  
  .grid-two,
  .grid-three,
  .grid-four {
    grid-template-columns: 1fr;
  }
  
  .hero-section {
    min-height: 50vh;
    padding: var(--space-xl) var(--space-md);
  }
  
  .privacy-popup {
    bottom: var(--space-md);
    right: var(--space-md);
    left: var(--space-md);
    max-width: none;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  :root {
    --space-lg: 1.5rem;
    --space-xl: 1.5rem;
    --space-xxl: 2rem;
  }
  
  .header-container {
    padding: var(--space-md);
  }
  
  .container {
    padding: 0 var(--space-md);
  }
  
  .section {
    padding: var(--space-xl) 0;
  }
  
  .btn {
    width: 100%;
    padding: var(--space-md);
  }
}

@media (max-width: 320px) {
  html {
    font-size: 14px;
  }
  
  .card {
    padding: var(--space-md);
  }
  
  .hero-section {
    min-height: 40vh;
  }
}

/* ============================================
   Utility Classes
   ============================================ */

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

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

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

.mt-sm {
  margin-top: var(--space-sm);
}

.mt-md {
  margin-top: var(--space-md);
}

.mt-lg {
  margin-top: var(--space-lg);
}

.mb-sm {
  margin-bottom: var(--space-sm);
}

.mb-md {
  margin-bottom: var(--space-md);
}

.mb-lg {
  margin-bottom: var(--space-lg);
}

.hidden {
  display: none;
}

.visible {
  display: block;
}