:root {
  --primary-color: #4caf50;
  --secondary-color: #388e3c;
  --light-color: #f5f5f5;
  --dark-color: #333;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 0;
  background-color: var(--light-color);
  color: var(--dark-color);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Sticky header */
.sticky-header {
  position: sticky;
  top: 0;
  background: var(--primary-color);
  color: white;
  padding: 1rem 0;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  z-index: 1000;
}

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

.logo {
  font-size: 1.8rem;
  font-weight: bold;
  text-decoration: none;
  color: white;
  cursor: pointer;
}

.logo span {
  color: #e0e0e0;
}

.top-cities {
  flex-grow: 1;
}

.top-cities ul {
  list-style: none;
  display: flex;
  margin: 0;
  padding: 0;
  gap: 1.5rem;
  justify-content: flex-end; /* Align city links to the right */
}

.top-cities li {
  margin: 0;
  padding: 0;
}

.top-cities a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  font-size: 1.1rem;
  transition: all 0.2s ease;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}

.top-cities a:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

@media (max-width: 768px) {
  .sticky-header .container {
    flex-direction: column;
    align-items: flex-start;
    padding-bottom: 0.5rem;
  }

  .top-cities {
    margin-top: 0.5rem;
    width: 100%;
    overflow-x: auto;
  }

  .top-cities ul {
    width: max-content;
  }
}

main {
  padding: 2rem 0;
  margin-top: 1rem; /* Add a small margin after the sticky header */
}

/* Startseite */
.intro-section {
  background-color: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  margin-bottom: 2rem;
  text-align: center;
}

.intro-section h1 {
  color: var(--primary-color);
  margin-top: 0;
  font-size: 2.2rem;
}

.intro-text {
  font-size: 1.1rem;
  max-width: 800px;
  margin: 0 auto 2rem auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.feature-card {
  background-color: #f9f9f9;
  border-radius: 8px;
  padding: 1.5rem;
  text-align: center;
  transition: transform 0.3s;
}

.feature-card:hover {
  transform: translateY(-5px);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.feature-card h3 {
  color: var(--secondary-color);
  margin-top: 0;
}

/* Info-Bereich */
.info-section {
  background-color: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  margin-bottom: 2rem;
}

.info-section h2 {
  color: var(--primary-color);
  border-bottom: 2px solid var(--primary-color);
  padding-bottom: 10px;
  margin-top: 0;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 1.5rem;
}

@media (max-width: 992px) {
  .info-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .info-grid {
    grid-template-columns: 1fr;
  }
}

.info-card {
  background-color: #f9f9f9;
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.info-card h3 {
  color: var(--secondary-color);
  margin-top: 0;
  border-bottom: 1px solid #ddd;
  padding-bottom: 8px;
}

.threshold-info {
  background-color: rgba(76, 175, 80, 0.1);
  padding: 10px;
  border-radius: 4px;
  margin-top: 10px;
}

.threshold-info ul {
  margin: 5px 0;
  padding-left: 20px;
}

.info-box {
  background-color: #edf7ed;
  border-left: 4px solid var(--primary-color);
  padding: 1.5rem;
  border-radius: 0 8px 8px 0;
  margin-top: 2rem;
}

.info-box h3 {
  color: var(--secondary-color);
  margin-top: 0;
}

.info-box ul {
  padding-left: 20px;
}

/* Suchbereich */
.search-section {
  background-color: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  margin-bottom: 2rem;
}

.search-form {
  display: flex;
  gap: 10px;
}

.search-form input {
  flex: 1;
  padding: 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 1rem;
}

.search-form button {
  padding: 12px 24px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
  transition: background-color 0.3s;
}

.search-form button:hover {
  background-color: var(--secondary-color);
}

/* Ergebnisbereich */
.results-section {
  display: none;
  background-color: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  margin-bottom: 3rem; /* Erhöhter Abstand zum nächsten Block */
}

.results-section h2 {
  margin-top: 0;
  color: var(--primary-color);
  border-bottom: 2px solid var(--primary-color);
  padding-bottom: 10px;
}

.air-quality-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 1.5rem;
}

@media (max-width: 992px) {
  .air-quality-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .air-quality-grid {
    grid-template-columns: 1fr;
  }
}

.air-quality-card {
  background-color: #f9f9f9;
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s;
}

.air-quality-card:hover {
  transform: translateY(-5px);
}

.air-quality-card h3 {
  margin-top: 0;
  color: var(--secondary-color);
}

.air-quality-value {
  font-size: 2rem;
  font-weight: bold;
  margin: 1rem 0;
}

.air-quality-description {
  font-size: 1.1rem;
  color: #555;
}

/* Farbkodierung für Luftqualitätswerte */
.aqi-good {
  color: #4caf50;
}

.aqi-moderate {
  color: #ffc107;
}

.aqi-poor {
  color: #ff5722;
}

.aqi-very-poor {
  color: #f44336;
}

.aqi-extreme {
  color: #9c27b0;
}

/* Kartendarstellung */
.map-container {
  height: 400px;
  margin-top: 2rem;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

#map {
  height: 100%;
  width: 100%;
}

.map-legend {
  background-color: white;
  padding: 10px;
  border-radius: 4px;
  box-shadow: 0 1px 5px rgba(0, 0, 0, 0.2);
}

.map-legend h4 {
  margin-top: 0;
  margin-bottom: 10px;
}

.legend-item {
  display: flex;
  align-items: center;
  margin-bottom: 5px;
}

.legend-color {
  width: 20px;
  height: 20px;
  margin-right: 8px;
  border-radius: 3px;
}

/* Meldungen */
.error-message {
  background-color: #ffebee;
  color: #c62828;
  padding: 1rem;
  border-radius: 4px;
  margin-top: 1rem;
  display: none;
}

.loading {
  display: none;
  text-align: center;
  padding: 2rem;
}

.loading::after {
  content: "...";
  animation: dots 1.5s steps(5, end) infinite;
}

@keyframes dots {
  0%,
  20% {
    content: ".";
  }
  40% {
    content: "..";
  }
  60%,
  100% {
    content: "...";
  }
}

/* Footer */
footer {
  background-color: var(--dark-color);
  color: white;
  padding: 2rem 0 1rem;
  margin-top: 2rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  color: var(--primary-color);
  margin-top: 0;
  border-bottom: 1px solid #555;
  padding-bottom: 8px;
}

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

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  color: #ddd;
  text-decoration: none;
  transition: color 0.3s;
}

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

.footer-section a {
  color: var(--primary-color);
  text-decoration: none;
}

.footer-section a:hover {
  text-decoration: underline;
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid #555;
  padding-top: 1rem;
}

/* Clean up unused sidebar styles */
.sidebar,
.sidebar-header,
.sidebar .logo,
.sidebar .logo span,
.sidebar .top-cities ul,
.sidebar .top-cities li,
.sidebar .top-cities a,
.sidebar .top-cities a:hover,
.main-content {
  display: none; /* Not using these anymore */
}

/* Advertisement Containers */
.ad-container {
  margin: 2rem auto;
  text-align: center;
}

.ad-placeholder {
  background: linear-gradient(135deg, #f5f5f5, #e0e0e0);
  border: 2px dashed #ccc;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: #888;
  font-size: 0.9rem;
  padding: 1rem;
  margin: 0 auto;
}

.ad-placeholder span {
  text-transform: uppercase;
  font-weight: bold;
  letter-spacing: 1px;
  margin-bottom: 0.5rem;
}

.ad-placeholder p {
  margin: 0;
}

/* Ad size variations */
.ad-banner .ad-placeholder {
  width: 970px;
  height: 250px;
  max-width: 100%;
}

.ad-leaderboard .ad-placeholder {
  width: 728px;
  height: 90px;
  max-width: 100%;
}

.ad-rectangle .ad-placeholder {
  width: 336px;
  height: 280px;
}

.ad-square .ad-placeholder {
  width: 300px;
  height: 250px;
}

.ad-footer .ad-placeholder {
  width: 970px;
  height: 90px;
  max-width: 100%;
}

/* Ad container within info-grid */
.info-grid .ad-container {
  margin: 0;
}

/* Responsive ad adjustments */
@media (max-width: 992px) {
  .ad-banner .ad-placeholder,
  .ad-leaderboard .ad-placeholder,
  .ad-footer .ad-placeholder {
    width: 100%;
    height: auto;
    min-height: 90px;
    padding: 1.5rem;
  }

  .ad-rectangle .ad-placeholder,
  .ad-square .ad-placeholder {
    width: 100%;
    height: auto;
    min-height: 200px;
    padding: 1.5rem;
  }
}

/* Page wrapper for main content with relative positioning */
.page-wrapper {
  max-width: 1100px; /* Match the container width */
  margin: 0 auto;
  position: relative; /* Important for absolute positioning of the ads */
}

/* Skyscraper ad styles */
.ad-skyscraper {
  position: absolute; /* Absolute positioning relative to page-wrapper */
  top: 120px; /* Space for the header */
  width: 200px;
  height: 800px;
  margin: 0;
  z-index: 90;
}

.ad-skyscraper .ad-placeholder {
  width: 200px;
  height: 800px;
  border: 2px dashed #d81b60; /* Pink outline like in the image */
}

/* Position ads relative to the page wrapper with equal spacing */
.ad-left {
  left: -240px; /* Position left of the content area */
}

.ad-right {
  right: -240px; /* Position right of the content area */
}

/* Responsive adjustments for skyscraper ads */
@media (max-width: 1600px) {
  .ad-left {
    left: -225px;
  }

  .ad-right {
    right: -225px;
  }
}

@media (max-width: 1400px) {
  .ad-left {
    left: -210px;
  }

  .ad-right {
    right: -210px;
  }
}

@media (max-width: 1300px) {
  .ad-skyscraper {
    display: none; /* Hide on smaller screens */
  }
}