/* Irdanum - Wissensportal über Sehtraining und Augenerholung */

:root {
  --primary-color: #2c3e50;
  --secondary-accent: #3498db;
  --success-accent: #2ecc71;
  --warning-accent: #f39c12;
  --light-grey: #ecf0f1;
  --medium-grey: #bdc3c7;
  --white: #ffffff;
  --dark-text: #2c3e50;
  --base-spacing: 20px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Lora', serif;
  background-color: var(--white);
  color: var(--dark-text);
  line-height: 1.6;
  font-size: 16px;
}

header {
  background-color: var(--primary-color);
  color: var(--white);
  padding: calc(var(--base-spacing) * 1.5) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--base-spacing);
}

header .logo {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 1px;
}

header nav {
  display: flex;
  gap: 40px;
  list-style: none;
}

header nav a {
  color: var(--white);
  text-decoration: none;
  font-size: 14px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

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

header nav a.active {
  color: var(--secondary-accent);
  border-bottom: 2px solid var(--secondary-accent);
  padding-bottom: 5px;
}

.container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--base-spacing);
}

section {
  padding: calc(var(--base-spacing) * 4) 0;
}

h1 {
  font-family: 'Montserrat', sans-serif;
  font-size: 56px;
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: calc(var(--base-spacing) * 2);
  line-height: 1.2;
}

h2 {
  font-family: 'Montserrat', sans-serif;
  font-size: 42px;
  font-weight: 700;
  margin-bottom: calc(var(--base-spacing) * 1.5);
  color: var(--primary-color);
}

h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 28px;
  font-weight: 600;
  margin-bottom: calc(var(--base-spacing) * 1);
  color: var(--primary-color);
}

p {
  margin-bottom: var(--base-spacing);
  font-size: 16px;
  line-height: 1.8;
}

/* Hero Section */
.hero {
  background-color: var(--primary-color);
  color: var(--white);
  padding: calc(var(--base-spacing) * 6) 0;
  display: flex;
  align-items: center;
  min-height: 600px;
}

.hero h1 {
  color: var(--white);
  margin-bottom: calc(var(--base-spacing) * 2);
}

.hero p {
  font-size: 20px;
  margin-bottom: calc(var(--base-spacing) * 2);
  color: var(--light-grey);
}

/* Full-width Image Sections */
.hero-image {
  width: 100%;
  height: 600px;
  object-fit: cover;
  display: block;
}

.section-image {
  width: 100%;
  max-width: 900px;
  height: auto;
  margin: calc(var(--base-spacing) * 2) 0;
  object-fit: cover;
  border-radius: 4px;
}

.section-image-small {
  width: 100%;
  max-width: 400px;
  height: auto;
  object-fit: cover;
  border-radius: 4px;
  margin: var(--base-spacing) 0;
}

/* Two Column Layout */
.two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: calc(var(--base-spacing) * 3);
  align-items: center;
  margin: calc(var(--base-spacing) * 2) 0;
}

.two-column img {
  width: 100%;
  height: auto;
  border-radius: 4px;
}

/* Cards Grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: calc(var(--base-spacing) * 2);
  margin: calc(var(--base-spacing) * 3) 0;
}

.card {
  background-color: var(--white);
  border: 1px solid var(--light-grey);
  padding: calc(var(--base-spacing) * 2);
  border-radius: 4px;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.card:hover {
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
  transform: translateY(-3px);
}

.card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 4px;
  margin-bottom: var(--base-spacing);
}

.card h3 {
  font-size: 20px;
  margin-bottom: var(--base-spacing);
}

.card p {
  font-size: 14px;
  color: #666;
}

/* Button */
.btn {
  display: inline-block;
  padding: 14px 40px;
  background-color: var(--secondary-accent);
  color: var(--white);
  text-decoration: none;
  border-radius: 4px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 1px;
  transition: all 0.3s ease;
  border: 2px solid var(--secondary-accent);
  cursor: pointer;
}

.btn:hover {
  background-color: transparent;
  color: var(--secondary-accent);
  box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

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

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

/* Footer */
footer {
  background-color: var(--primary-color);
  color: var(--white);
  padding: calc(var(--base-spacing) * 4) 0 var(--base-spacing);
  margin-top: calc(var(--base-spacing) * 6);
}

footer .footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: calc(var(--base-spacing) * 3);
  margin-bottom: calc(var(--base-spacing) * 3);
}

footer h4 {
  font-family: 'Montserrat', sans-serif;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: var(--base-spacing);
}

footer a {
  color: var(--light-grey);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.8;
  transition: color 0.3s ease;
}

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

footer .footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--base-spacing);
  text-align: center;
  font-size: 14px;
  color: var(--light-grey);
}

/* Info Section */
.info-section {
  background-color: var(--light-grey);
  padding: calc(var(--base-spacing) * 3);
  border-left: 4px solid var(--warning-accent);
  margin: calc(var(--base-spacing) * 3) 0;
  border-radius: 4px;
}

.info-section h3 {
  margin-top: 0;
}

/* List Styles */
ul, ol {
  margin-left: calc(var(--base-spacing) * 2);
  margin-bottom: var(--base-spacing);
}

li {
  margin-bottom: calc(var(--base-spacing) * 0.75);
  line-height: 1.8;
}

ul li:before {
  content: "● ";
  color: var(--success-accent);
  font-weight: bold;
  margin-right: 10px;
}

/* Breadcrumb */
.breadcrumb {
  font-size: 14px;
  margin-bottom: calc(var(--base-spacing) * 2);
  color: var(--medium-grey);
}

.breadcrumb a {
  color: var(--secondary-accent);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--primary-color);
  color: var(--white);
  padding: var(--base-spacing);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--base-spacing);
  z-index: 1000;
  font-size: 14px;
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

.cookie-banner button {
  background-color: var(--secondary-accent);
  color: var(--white);
  border: none;
  padding: 10px 20px;
  border-radius: 4px;
  cursor: pointer;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  transition: all 0.3s ease;
}

.cookie-banner button:hover {
  background-color: var(--white);
  color: var(--primary-color);
}

/* Responsive Design */
@media (max-width: 768px) {
  header nav {
    gap: 20px;
    font-size: 12px;
  }

  h1 {
    font-size: 36px;
  }

  h2 {
    font-size: 28px;
  }

  .two-column {
    grid-template-columns: 1fr;
    gap: var(--base-spacing);
  }

  .hero {
    min-height: 400px;
    padding: calc(var(--base-spacing) * 3) 0;
  }

  .hero-image {
    height: 400px;
  }

  section {
    padding: calc(var(--base-spacing) * 2) 0;
  }

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

@media (max-width: 480px) {
  header .container {
    flex-direction: column;
    gap: var(--base-spacing);
  }

  header nav {
    flex-direction: column;
    gap: var(--base-spacing);
  }

  h1 {
    font-size: 28px;
    letter-spacing: 0.5px;
  }

  h2 {
    font-size: 22px;
  }

  .container {
    padding: 0 calc(var(--base-spacing) * 0.75);
  }
}