/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 246, 240, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: 16px 0;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-img {
  width: 96px;
  height: 76px;
  object-fit: contain;
  display: block;
}

.main-nav {
  display: flex;
  gap: 32px;
  font-weight: 500;
  font-size: 0.95rem;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #EFECE4;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
}

.lang-btn {
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--color-text-muted);
  font-weight: 600;
  padding: 2px 4px;
}

.lang-btn.active {
  color: var(--color-accent);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: var(--transition-normal);
}

.btn-primary {
  background-color: var(--color-accent);
  color: #FFFFFF;
}

.btn-primary:hover {
  background-color: var(--color-accent-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

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

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

.btn-block {
  width: 100%;
}

/* Hero Section */
.hero-section {
  padding: 90px 0 70px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.eco-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-eco-bg);
  color: #065F46;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero-text h1 {
  font-size: 2.85rem;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero-text p {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 40px;
}

.trust-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.trust-icon {
  color: var(--color-eco);
  font-weight: 800;
}

/* Hero Card Visual */
.hero-card-stack {
  position: relative;
}

.hero-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 32px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
}

.hero-card.card-top {
  position: relative;
  z-index: 2;
  border-left: 4px solid var(--color-accent);
}

.hero-card.card-mid {
  position: absolute;
  top: 40px;
  left: 24px;
  right: -24px;
  z-index: 1;
  opacity: 0.85;
  border-left: 4px solid var(--color-eco);
}

.card-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  margin-bottom: 12px;
}

/* Impact Section */
.impact-section {
  background: var(--color-primary);
  color: #FFFFFF;
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.impact-number-wrap {
  display: flex;
  align-items: baseline;
  justify-content: center;
}

.impact-number {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 800;
  color: #FFFFFF;
}

.impact-unit {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-eco);
  margin-left: 2px;
}

.impact-label {
  font-size: 0.95rem;
  color: #C2D1C9;
}

/* Case Studies */
.case-filters {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 18px;
  border-radius: 20px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.filter-btn.active,
.filter-btn:hover {
  background: var(--color-primary);
  color: #FFFFFF;
  border-color: var(--color-primary);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 32px;
}

.case-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
  cursor: pointer;
}

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

.case-card-body {
  padding: 24px;
}

.case-tag {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.case-meta {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

/* Products Section */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 24px;
}

.product-card {
  background: var(--color-surface);
  padding: 32px 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  text-align: center;
  transition: var(--transition-normal);
}

.product-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.product-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

/* Eco Section */
.eco-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.eco-features {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 32px;
}

.eco-feature-item {
  display: flex;
  gap: 16px;
}

.feature-icon {
  font-size: 1.75rem;
}

.eco-card-box {
  background: var(--color-primary);
  color: #FFFFFF;
  padding: 48px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.eco-box-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.eco-box-content h3 {
  color: #FFFFFF;
  margin-bottom: 12px;
  font-size: 1.75rem;
}

.eco-box-content p {
  color: #C2D1C9;
}

/* Footer */
.site-footer {
  background: var(--color-primary);
  color: #FFFFFF;
  padding: 60px 0 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-logo {
  height: 44px;
  filter: brightness(0) invert(1);
  margin-bottom: 16px;
}

.footer-col h4 {
  color: #FFFFFF;
  margin-bottom: 20px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 10px;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  font-size: 0.85rem;
  color: #A0B2A7;
  text-align: center;
}

/* Modal Windows */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-normal);
}

.modal.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 28, 21, 0.7);
  backdrop-filter: blur(4px);
}

.modal-container {
  position: relative;
  z-index: 2;
  background: var(--color-surface);
  width: 90%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  border: none;
  background: transparent;
  font-size: 2rem;
  cursor: pointer;
  color: var(--color-text-muted);
}

.quote-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 24px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
}

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