/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: 10px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  font-size: 1rem;
}

.btn-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

.btn-disabled {
  background: rgba(150, 150, 150, 0.5);
  color: rgba(255, 255, 255, 0.7);
  cursor: not-allowed;
  border: 2px solid rgba(150, 150, 150, 0.3);
}

.btn-disabled:hover {
  transform: none;
  box-shadow: none;
}

/* Dark mode buttons */
body.dark-mode .btn-secondary {
  background: rgba(0, 0, 0, 0.3);
  border: 2px solid rgba(255, 255, 255, 0.2);
}

body.dark-mode .btn-secondary:hover {
  background: rgba(0, 0, 0, 0.5);
}

/* Section headers */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-title {
  color: white;
  margin-bottom: 15px;
}

.section-subtitle {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.1rem;
}