/* ============================================
   CSS Variables - Nordic Eco Sustainability
   ============================================ */
:root {
  --color-primary: #7FAF8F;
  --color-secondary: #A8D3E2;
  --color-background: #F9F9F7;
  --color-text: #2C2C2A;
  --color-text-light: #C9C9C7;
  --color-accent: #F4E8D3;
  --color-white: #FFFFFF;
  
  --font-primary: 'Manrope', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-xxl: 4rem;
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
  
  --transition-fast: 0.3s ease;
  --transition-medium: 0.5s ease;
}

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

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
  overflow-x: hidden;
}

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

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

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

/* ============================================
   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);
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h3 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

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

/* ============================================
   Header
   ============================================ */
.site-header {
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  position: relative;
  z-index: 1000;
}

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

.brand-name {
  font-family: var(--font-primary);
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  font-weight: 700;
  color: var(--color-primary);
  margin: 0;
  display: flex;
  align-items: center;
  line-height: 1.2;
  height: fit-content;
}

.main-nav {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--space-lg);
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.nav-link {
  color: var(--color-text);
  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-primary);
  transition: width var(--transition-fast);
}

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

.burger-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  color: var(--color-text);
  font-size: 1.5rem;
  order: 999;
  align-self: center;
  line-height: 1;
  height: fit-content;
  flex-shrink: 0;
}

.burger-toggle:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ============================================
   Main Content
   ============================================ */
main {
  min-height: calc(100vh - 200px);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-lg);
}

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

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

/* ============================================
   Hero Section
   ============================================ */
.hero-section {
  position: relative;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  margin-bottom: var(--space-xl);
}

.hero-overlay {
  background: rgba(249, 249, 247, 0.85);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  max-width: 90%;
  text-align: center;
}

.hero-title {
  font-size: clamp(1.75rem, 5vw, 3rem);
  margin-bottom: var(--space-md);
  color: var(--color-primary);
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--color-text);
  margin-bottom: var(--space-lg);
}

/* ============================================
   Card Layouts
   ============================================ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

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

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

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

.card-title {
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.card-text {
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

/* ============================================
   Interactive Elements
   ============================================ */
.btn {
  display: inline-block;
  padding: var(--space-md) var(--space-lg);
  background-color: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
  text-align: center;
}

.btn:hover {
    color: white;
  background-color: var(--color-text);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: var(--color-text);
}

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

/* ============================================
   Forms
   ============================================ */
.form-container {
  max-width: 600px;
  margin: 0 auto;
  background-color: var(--color-white);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

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

.form-label {
  display: block;
  margin-bottom: var(--space-sm);
  font-weight: 600;
  color: var(--color-text);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-md);
  border: 2px solid var(--color-text-light);
  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;
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

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

.checkbox-label {
  font-size: 0.9rem;
  cursor: pointer;
}

/* ============================================
   Info Boxes
   ============================================ */
.info-box {
  background-color: var(--color-secondary);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
  border-left: 4px solid var(--color-primary);
}

.tip-box {
  background-color: var(--color-accent);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
}

/* ============================================
   Interactive Bin Layout
   ============================================ */
.bin-layout {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}

.bin-item {
  background-color: var(--color-white);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.bin-item:hover {
  box-shadow: var(--shadow-md);
  transform: scale(1.05);
}

.bin-item::after {
  content: attr(data-tip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-10px);
  background-color: var(--color-text);
  color: var(--color-white);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
  z-index: 10;
}

.bin-item:hover::after {
  opacity: 1;
}

.bin-icon {
  font-size: 3rem;
  margin-bottom: var(--space-sm);
}

.bin-title {
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

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

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

/* ============================================
   Footer
   ============================================ */
.site-footer {
  background-color: var(--color-text);
  color: var(--color-white);
  padding: var(--space-xl) var(--space-lg);
  margin-top: var(--space-xxl);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-xl);
}

.footer-section h3 {
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.footer-menu {
  list-style: none;
  padding: 0;
}

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

.footer-link {
  color: var(--color-white);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  text-align: center;
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--color-text-light);
}

/* ============================================
   Privacy Popup
   ============================================ */
.privacy-popup {
  display: none;
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  max-width: 400px;
  background-color: var(--color-white);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 10000;
}

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

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

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

/* ============================================
   Thank You Page
   ============================================ */
.thank-you-section {
  text-align: center;
  padding: var(--space-xxl) 0;
}

.thank-you-icon {
  font-size: 4rem;
  color: var(--color-primary);
  margin-bottom: var(--space-lg);
}

.thank-you-message {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  color: var(--color-primary);
  margin-bottom: var(--space-lg);
}

/* ============================================
   404 Page
   ============================================ */
.error-section {
  text-align: center;
  padding: var(--space-xxl) 0;
}

.error-code {
  font-size: clamp(4rem, 10vw, 8rem);
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.error-message {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  margin-bottom: var(--space-xl);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
  .header-container {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    position: relative;
    flex-wrap: wrap;
  }
  
  .brand-name {
    order: 1;
    flex: 1;
    min-width: 0;
  }
  
  .burger-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    order: 2;
    flex-shrink: 0;
    align-self: center;
    position: relative;
  }
  
  .main-nav {
    width: 100%;
    display: none;
    order: 3;
    margin-top: var(--space-md);
    flex-basis: 100%;
  }
  
  .main-nav.active {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }
  
  .nav-list {
    flex-direction: column;
    width: 100%;
    gap: var(--space-sm);
  }
  
  .hero-overlay {
    padding: var(--space-lg);
  }
  
  .card-grid {
    grid-template-columns: 1fr;
  }
  
  .bin-layout {
    grid-template-columns: 1fr;
  }
  
  .footer-container {
    grid-template-columns: 1fr;
  }
  
  .privacy-popup {
    max-width: calc(100% - 2rem);
    left: var(--space-md);
    right: var(--space-md);
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }
  
  .container {
    padding: var(--space-md);
  }
  
  .section-spacing {
    padding: var(--space-lg) 0;
  }
  
  .hero-section {
    min-height: 40vh;
  }
  
  .form-container {
    padding: var(--space-lg);
  }
  
  .map-container {
    height: 300px;
  }
}

@media (max-width: 320px) {
  html {
    font-size: 12px;
  }
  
  .header-container {
    padding: var(--space-sm) var(--space-md);
  }
  
  .card-grid {
    gap: var(--space-md);
  }
}

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

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

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

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

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

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