:root {
  --color-deep-graphite: #33363A;
  --color-warm-sandstone: #D9C2A6;
  --color-muted-teal: #5F9EA0;
  --color-soft-ash: #E8ECEF;
  --color-white: #FFFFFF;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Roboto', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 18.5px;
  line-height: 1.68;
  color: var(--color-deep-graphite);
  background-color: var(--color-white);
}

h1 {
  font-family: 'Montserrat', 'DIN Next Pro', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 900;
  font-size: 62px;
  letter-spacing: -0.035em;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  color: var(--color-deep-graphite);
}

h2 {
  font-family: 'Montserrat', 'DIN Next Pro', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 800;
  font-size: 48px;
  letter-spacing: -0.035em;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  color: var(--color-deep-graphite);
}

h3 {
  font-family: 'Montserrat', 'DIN Next Pro', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 700;
  font-size: 32px;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 1rem;
  color: var(--color-deep-graphite);
}

p {
  margin-bottom: 1rem;
}

a {
  color: var(--color-muted-teal);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--color-warm-sandstone);
}

header {
  position: sticky;
  top: 0;
  background-color: var(--color-deep-graphite);
  padding: 1rem 0;
  box-shadow: 0 2px 8px rgba(51, 54, 58, 0.15);
  z-index: 1000;
}

header .navbar {
  padding: 0.5rem 0;
}

header .navbar-brand {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: 24px;
  color: var(--color-warm-sandstone) !important;
  letter-spacing: -0.02em;
}

header .navbar-brand:hover {
  color: var(--color-muted-teal) !important;
}

header .nav-link {
  color: var(--color-soft-ash) !important;
  margin: 0 0.5rem;
  font-weight: 500;
  transition: color 0.3s ease;
}

header .nav-link:hover {
  color: var(--color-warm-sandstone) !important;
}

footer {
  background-color: var(--color-deep-graphite);
  color: var(--color-soft-ash);
  padding: 3rem 2rem;
  margin-top: 4rem;
}

footer a {
  color: var(--color-warm-sandstone);
}

footer a:hover {
  color: var(--color-muted-teal);
}

.container-wide {
  max-width: 1500px;
  margin: 0 auto;
  padding: 0 20px;
}

.hero-section {
  background-color: var(--color-deep-graphite);
  color: var(--color-white);
  padding: 4rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.hero-section .hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
}

.hero-section h1 {
  color: var(--color-white);
  font-size: 78px;
  margin-bottom: 1.5rem;
}

.hero-section p {
  font-size: 20px;
  color: var(--color-soft-ash);
  margin-bottom: 2rem;
}

.hero-image {
  width: 100%;
  height: auto;
  object-fit: cover;
  margin: 2rem 0;
}

.content-block {
  padding: 3rem 2rem;
  background-color: var(--color-white);
}

.content-block.alternate {
  background-color: var(--color-soft-ash);
  background: linear-gradient(135deg, var(--color-soft-ash) 0%, rgba(232, 236, 239, 0.5) 100%);
}

.mechanism-card {
  background: var(--color-white);
  border: 2px solid var(--color-soft-ash);
  padding: 2.5rem;
  margin: 2rem 0;
  border-radius: 4px;
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  cursor: pointer;
}

.mechanism-card:hover {
  border-color: var(--color-muted-teal);
  box-shadow: 0 8px 24px rgba(95, 158, 160, 0.15);
  transform: translateY(-4px);
}

.mechanism-card h3 {
  color: var(--color-muted-teal);
  margin-bottom: 1.5rem;
}

.mechanism-card .teal-accent {
  color: var(--color-muted-teal);
  font-weight: 600;
}

.cycle-timeline {
  width: 100%;
  margin: 3rem 0;
  overflow-x: auto;
}

.timeline-table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--color-white);
  border: 1px solid var(--color-soft-ash);
}

.timeline-table thead {
  background-color: var(--color-deep-graphite);
  color: var(--color-white);
}

.timeline-table th {
  padding: 1.5rem;
  text-align: left;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.timeline-table td {
  padding: 1.5rem;
  border-top: 1px solid var(--color-soft-ash);
}

.timeline-table tbody tr:nth-child(even) {
  background-color: rgba(232, 236, 239, 0.4);
}

.timeline-table tbody tr:hover {
  background-color: rgba(95, 158, 160, 0.08);
}

.faq-section {
  padding: 3rem 2rem;
  background-color: var(--color-white);
}

.accordion-button {
  background-color: var(--color-white);
  color: var(--color-deep-graphite);
  border: 2px solid var(--color-soft-ash);
  border-radius: 4px;
  padding: 1.5rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-bottom: 1rem;
}

.accordion-button:hover {
  background-color: var(--color-soft-ash);
  border-color: var(--color-muted-teal);
}

.accordion-button.active {
  background-color: var(--color-muted-teal);
  color: var(--color-white);
  border-color: var(--color-muted-teal);
}

.accordion-content {
  display: none;
  background-color: var(--color-soft-ash);
  padding: 2rem;
  border-left: 4px solid var(--color-muted-teal);
  margin-bottom: 1rem;
  animation: fadeIn 0.3s ease-in;
}

.accordion-content.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.card {
  background-color: var(--color-white);
  border: 2px solid var(--color-soft-ash);
  padding: 2rem;
  border-radius: 4px;
  transition: all 0.35s ease;
  display: flex;
  flex-direction: column;
}

.card:hover {
  border-color: var(--color-muted-teal);
  box-shadow: 0 8px 24px rgba(95, 158, 160, 0.15);
  transform: translateY(-4px);
}

.card h3 {
  color: var(--color-muted-teal);
  margin-bottom: 1rem;
}

.card p {
  flex: 1;
  margin-bottom: 1.5rem;
}

.card a {
  color: var(--color-warm-sandstone);
  font-weight: 600;
  display: inline-block;
  transition: all 0.3s ease;
}

.card a:hover {
  color: var(--color-muted-teal);
  transform: translateX(4px);
}

.cta-section {
  background-color: var(--color-deep-graphite);
  color: var(--color-white);
  padding: 4rem 2rem;
  text-align: center;
  border-radius: 4px;
  margin: 3rem 0;
}

.cta-section h2 {
  color: var(--color-white);
  margin-bottom: 1.5rem;
}

.cta-section p {
  font-size: 18px;
  color: var(--color-soft-ash);
  margin-bottom: 2rem;
}

.btn-primary {
  background-color: var(--color-warm-sandstone);
  color: var(--color-deep-graphite);
  border: 2px solid var(--color-warm-sandstone);
  padding: 1rem 2rem;
  font-weight: 700;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.35s ease;
  font-size: 16px;
  display: inline-block;
  text-decoration: none;
}

.btn-primary:hover {
  background-color: transparent;
  color: var(--color-warm-sandstone);
  transform: scale(1.05);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-warm-sandstone);
  padding: 1rem 2rem;
  font-weight: 700;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.35s ease;
  font-size: 16px;
  display: inline-block;
  text-decoration: none;
}

.btn-secondary:hover {
  background-color: var(--color-warm-sandstone);
  color: var(--color-deep-graphite);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--color-deep-graphite);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid var(--color-soft-ash);
  border-radius: 4px;
  font-family: inherit;
  font-size: 16px;
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-muted-teal);
  box-shadow: 0 0 0 3px rgba(95, 158, 160, 0.1);
}

.disclaimer {
  background-color: var(--color-soft-ash);
  border-left: 4px solid var(--color-muted-teal);
  padding: 1.5rem;
  margin: 2rem 0;
  border-radius: 4px;
  font-size: 16px;
  line-height: 1.6;
}

.disclaimer strong {
  color: var(--color-deep-graphite);
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-deep-graphite);
  color: var(--color-white);
  padding: 1.5rem 2rem;
  z-index: 999;
  display: none;
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.2);
}

.cookie-banner.active {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}

.cookie-banner-content p {
  margin: 0;
  font-size: 14px;
  flex: 1;
}

.cookie-banner-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.cookie-banner-buttons button {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.3s ease;
  font-size: 14px;
}

.cookie-banner-buttons .btn-accept {
  background-color: var(--color-warm-sandstone);
  color: var(--color-deep-graphite);
}

.cookie-banner-buttons .btn-accept:hover {
  opacity: 0.9;
}

.cookie-banner-buttons .btn-reject {
  background-color: transparent;
  color: var(--color-soft-ash);
  border: 2px solid var(--color-soft-ash);
}

.cookie-banner-buttons .btn-reject:hover {
  background-color: var(--color-soft-ash);
  color: var(--color-deep-graphite);
}

.cookie-banner-buttons .btn-learn {
  background-color: transparent;
  color: var(--color-muted-teal);
  border: 2px solid var(--color-muted-teal);
}

.cookie-banner-buttons .btn-learn:hover {
  background-color: var(--color-muted-teal);
  color: var(--color-white);
}

@media (max-width: 768px) {
  h1 {
    font-size: 42px;
  }

  h2 {
    font-size: 32px;
  }

  h3 {
    font-size: 24px;
  }

  body {
    font-size: 16px;
    line-height: 1.6;
  }

  .hero-section h1 {
    font-size: 48px;
  }

  .hero-section p {
    font-size: 16px;
  }

  .container-wide {
    padding: 0 20px;
  }

  .content-block {
    padding: 2rem 1.5rem;
  }

  .mechanism-card {
    padding: 1.5rem;
    margin: 1.5rem 0;
  }

  .card-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .timeline-table {
    font-size: 14px;
  }

  .timeline-table th,
  .timeline-table td {
    padding: 1rem;
  }

  .cookie-banner {
    flex-direction: column;
    align-items: flex-start;
  }

  .cookie-banner-buttons {
    width: 100%;
    justify-content: flex-start;
  }
}

@media (max-width: 576px) {
  h1 {
    font-size: 32px;
    margin-bottom: 1rem;
  }

  h2 {
    font-size: 24px;
  }

  h3 {
    font-size: 18px;
  }

  body {
    font-size: 15px;
    line-height: 1.5;
  }

  header .navbar-toggler {
    border-color: var(--color-soft-ash);
  }

  header .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23E8ECEF' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
  }

  .hero-section h1 {
    font-size: 36px;
  }

  .hero-section p {
    font-size: 14px;
  }

  .content-block {
    padding: 1.5rem 1rem;
  }

  .mechanism-card {
    padding: 1.5rem 1rem;
  }

  .timeline-table {
    font-size: 13px;
  }

  .timeline-table th,
  .timeline-table td {
    padding: 0.75rem;
  }

  .card {
    padding: 1.5rem;
  }

  footer {
    padding: 2rem 1rem;
    font-size: 14px;
  }
}