/* Exercise Calendar */
.gpt-exercise-calendar {
  display: flex;
  flex-direction: column;
  gap: 32px;
  margin-top: 24px;
}

.gpt-exercise-date-group {
  background: white;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  border: 1px solid #e5e7eb;
  transition: all 0.3s ease;
}

.gpt-exercise-date-group:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  transform: translateY(-2px);
}

.gpt-exercise-date-header {
  background: linear-gradient(135deg, var(--gpt-primary-color, #667eea) 0%, var(--gpt-secondary-color, #764ba2) 100%);
  color: white;
  padding: 20px 24px;
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.3px;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.gpt-exercise-cards-container {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: #f9fafb;
}

.gpt-exercise-card {
  background: white;
  border-radius: 10px;
  padding: 20px;
  border-left: 4px solid var(--gpt-primary-color, #667eea);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
  transition: all 0.2s ease;
}

.gpt-exercise-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transform: translateX(4px);
}

.gpt-exercise-card.gpt-exercise-completed {
  background: #f0fdf4;
  border-left-color: #10b981;
  opacity: 0.85;
}

.gpt-exercise-card.gpt-exercise-completed .gpt-exercise-name {
  text-decoration: line-through;
  color: #6b7280;
}

.gpt-exercise-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 12px;
}

.gpt-exercise-name {
  font-size: 18px;
  font-weight: 700;
  color: #1f2937;
  margin: 0;
  line-height: 1.4;
  flex: 1;
}

.gpt-exercise-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

.gpt-button-hide {
  background: #ef4444;
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.gpt-button-hide:hover {
  background: #dc2626;
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgba(239, 68, 68, 0.3);
}

.gpt-button-hide:active {
  transform: translateY(0);
}

.gpt-exercise-status-badge {
  background: #10b981;
  color: white;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.gpt-exercise-description {
  font-size: 15px;
  color: #4b5563;
  line-height: 1.6;
  margin: 0 0 12px 0;
}

.gpt-exercise-details {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.gpt-exercise-detail {
  font-size: 14px;
  color: #6b7280;
  padding: 6px 14px;
  background: #f3f4f6;
  border-radius: 6px;
  font-weight: 500;
}

.gpt-exercise-detail strong {
  color: #374151;
  margin-right: 4px;
}