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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f8f9fa;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header Styles */
header {
  background: linear-gradient(135deg, #2c3e50, #3498db);
  color: white;
  padding: 2rem 0;
  text-align: center;
}

header h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  font-weight: bold;
}

header .tagline {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

nav {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

nav a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 5px;
  transition: background-color 0.3s ease;
}

nav a:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

/* Main Content */
main {
  padding: 2rem 0;
}

.section {
  margin-bottom: 4rem;
}

.section h2 {
  font-size: 2rem;
  color: #2c3e50;
  margin-bottom: 1rem;
  text-align: center;
}

.section p {
  text-align: center;
  color: #666;
  margin-bottom: 2rem;
  font-size: 1.1rem;
}

/* Calendar Styles */
.calendar-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.3s ease;
}

.btn-primary {
  background-color: #3498db;
  color: white;
}

.btn-primary:hover {
  background-color: #2980b9;
}

.btn-secondary {
  background-color: #95a5a6;
  color: white;
}

.btn-secondary:hover {
  background-color: #7f8c8d;
}

.calendar-container {
  background: white;
  border-radius: 10px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  margin-bottom: 1rem;
}

.calendar-container iframe {
  display: block;
  width: 100%;
}

.calendar-note {
  text-align: center;
  padding: 1rem;
  background-color: #fff3cd;
  border-top: 1px solid #ffeaa7;
  color: #856404;
}

/* Training Grid */
.training-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.training-item {
  background: white;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  text-align: center;
}

.training-item h3 {
  color: #2c3e50;
  margin-bottom: 0.1rem;
  font-size: 1.3rem;
}

.training-item h4 {
  text-align: center;
  margin-top: 0px;
  margin-bottom: 0.5em;
  color: #888;
  font-size: 1.05rem;
  font-weight: normal;
}

.training-item p {
  margin-bottom: 0.5rem;
  text-align: left;
}

/* Footer */
footer {
  background-color: #2c3e50;
  color: white;
  text-align: center;
  padding: 2rem 0;
}

footer a {
  color: #3498db;
  text-decoration: none;
}

footer a:hover {
  color: #2980b9;
}

/* Responsive Design */
@media (max-width: 768px) {
  header h1 {
    font-size: 2rem;
  }
  
  header .tagline {
    font-size: 1rem;
  }
  
  nav {
    gap: 1rem;
  }
  
  nav a {
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
  }
  
  .section h2 {
    font-size: 1.5rem;
  }
  
  .calendar-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .training-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-info {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }
  
  header {
    padding: 1.5rem 0;
  }
  
  .training-item,
  .tournament-item,
  .contact-item {
    padding: 1.5rem;
  }
}

/* Chess-themed accents */
.section:nth-child(even) {
  background-color: #f1f3f4;
  padding: 3rem 0;
  margin-bottom: 0;
}

/* Smooth scrolling */
html {
  scroll-behavior: smooth;
}

/* Focus styles for accessibility */
a:focus,
button:focus {
  outline: 2px solid #3498db;
  outline-offset: 2px;
}