:root {
  --primary-color: #0078d7;
  --secondary-color: #2c3e50;
  --accent-color: #3498db;
  --light-bg: #f5f5f5;
  --dark-bg: #333;
  --text-color: #333;
  --light-text: #ffffff;
  --border-radius: 8px;
  --box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background-color: var(--light-bg);
  color: var(--text-color);
  line-height: 1.6;
  margin: 0;
  padding: 0;
}

/* Header styles */
.main-header {
  background: linear-gradient(to right, #2c3e50, #4a6fdc);
  color: var(--light-text);
  padding: 0 0 2rem 0;
  text-align: center;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background-color: rgba(0, 0, 0, 0.1);
}

.logo {
  display: flex;
  align-items: center;
  font-size: 1.5rem;
  font-weight: bold;
}

.logo i {
  margin-right: 0.5rem;
  color: #3498db;
}

.nav-links {
  display: flex;
  list-style: none;
}

.nav-links li {
  margin-left: 1.5rem;
}

.nav-links a {
  color: var(--light-text);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem;
  border-radius: 4px;
  transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  background-color: rgba(255, 255, 255, 0.1);
}

.hero {
  padding: 2rem;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
}

.subtitle {
  font-size: 1.1rem;
  opacity: 0.9;
}

/* Container and filter styles */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 2rem auto;
}

.filter-bar {
  display: flex;
  justify-content: center;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.filter-button {
  background-color: white;
  border: 1px solid #ddd;
  padding: 0.5rem 1rem;
  margin: 0 0.5rem 0.5rem 0;
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition);
}

.filter-button:hover {
  background-color: #f0f0f0;
}

.filter-button.active {
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* Event grid styles */
.events-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}

.event-card {
  background-color: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.event-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.image-container {
  height: 180px;
  overflow: hidden;
  position: relative;
}

.image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.event-card:hover .image-container img {
  transform: scale(1.05);
}

.card-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-content h3 {
  margin-bottom: 0.5rem;
  color: var(--secondary-color);
  font-size: 1.3rem;
}

.card-content h3 i,
.event-date i {
  margin-right: 0.5rem;
  color: var(--accent-color);
}

.event-date {
  color: #666;
  font-weight: 500;
  margin-bottom: 1rem;
}

.event-button {
  display: inline-block;
  background-color: var(--primary-color);
  color: white;
  padding: 0.5rem 1rem;
  text-decoration: none;
  border-radius: 4px;
  text-align: center;
  margin-top: auto;
  transition: var(--transition);
}

.event-button:hover {
  background-color: #005fa3;
}

/* Footer styles */
.main-footer {
  background-color: var(--dark-bg);
  color: var(--light-text);
  padding: 3rem 0 0 0;
  margin-top: 4rem;
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.footer-section {
  flex: 1;
  min-width: 250px;
  margin-bottom: 2rem;
  padding: 0 1rem;
}

.footer-section h3 {
  margin-bottom: 1rem;
  font-size: 1.2rem;
  position: relative;
  padding-bottom: 0.5rem;
}

.footer-section h3::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 50px;
  height: 2px;
  background-color: var(--accent-color);
}

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

.footer-section li {
  margin-bottom: 0.5rem;
  border-bottom: none;
}

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

.footer-section a:hover {
  color: var(--light-text);
}

.social-icons {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.social-icons a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  transition: var(--transition);
}

.social-icons a:hover {
  background-color: var(--accent-color);
  transform: translateY(-3px);
}

.footer-bottom {
  text-align: center;
  padding: 1.5rem;
  background-color: rgba(0, 0, 0, 0.2);
  margin-top: 1rem;
}

.error-message {
  text-align: center;
  padding: 2rem;
  color: #e74c3c;
  background-color: #fdf7f7;
  border-radius: var(--border-radius);
  font-weight: 500;
}

.error-message i {
  margin-right: 0.5rem;
  font-size: 1.2rem;
}

/* Styles pour la page À propos */
.about-container {
  background-color: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  padding: 2rem;
  margin-top: 2rem;
}

.about-section {
  margin-bottom: 3rem;
}

.about-section h2 {
  color: var(--primary-color);
  border-bottom: 2px solid var(--accent-color);
  padding-bottom: 0.5rem;
  margin-bottom: 1.5rem;
  font-size: 1.8rem;
  display: flex;
  align-items: center;
}

.about-section h2 i {
  margin-right: 0.5rem;
  color: var(--accent-color);
}

.about-section p {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 1rem;
  color: var(--text-color);
}

.testimonials {
  background-color: var(--light-bg);
  padding: 2rem;
  border-radius: var(--border-radius);
  margin-top: 2rem;
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 1.5rem;
}

.testimonial-card {
  background-color: white;
  padding: 1.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  position: relative;
}

.testimonial-card p {
  font-style: italic;
  margin-bottom: 2rem;
}

.testimonial-author {
  display: flex;
  align-items: center;
  border-top: 1px solid #eee;
  padding-top: 1rem;
}

.testimonial-author img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  margin-right: 1rem;
}

.testimonial-author span {
  font-weight: bold;
  color: var(--secondary-color);
}

.testimonial-author small {
  font-weight: normal;
  color: #777;
}

@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
    padding: 1rem;
  }

  .logo {
    margin-bottom: 1rem;
  }

  .nav-links {
    width: 100%;
    justify-content: space-around;
  }

  .nav-links li {
    margin: 0 0.5rem;
  }

  .events-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  }

  .footer-content {
    flex-direction: column;
  }

  .footer-section {
    margin-bottom: 2rem;
  }

  .testimonial-grid {
    grid-template-columns: 1fr;
  }
  
  .about-section h2 {
    font-size: 1.5rem;
  }
}