/* Trello-inspired card design */
body {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  padding: 20px 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

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

.page-header {
  color: white;
  text-align: center;
  margin-bottom: 40px;
}

.page-header h1 {
  font-size: 3rem;
  font-weight: 700;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
  margin-bottom: 10px;
}

.page-header p {
  font-size: 1.2rem;
  opacity: 0.9;
}

.task-card {
  background: white;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
  transition: all 0.3s cubic-bezier(.25, .8, .25, 1);
  margin-bottom: 20px;
  padding: 20px;
  position: relative;
  cursor: pointer;
  border-left: 4px solid #667eea;
}

.task-card:hover {
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.25), 0 10px 10px rgba(0, 0, 0, 0.22);
  transform: translateY(-2px);
}

.task-card.completed {
  opacity: 0.7;
  border-left-color: #28a745;
}

.task-card.completed .task-title {
  text-decoration: line-through;
  color: #6c757d;
}

  .task-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 10px;
    word-wrap: break-word;
  }

  .task-description {
    color: #6c757d;
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 15px;
    word-wrap: break-word;
  }

  .task-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
    flex-wrap: wrap;
  }

.btn {
  border-radius: 6px;
  padding: 8px 16px;
  font-weight: 500;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.btn-primary {
  background: #667eea;
  color: white;
}

.btn-primary:hover {
  background: #5568d3;
  color: white;
}

.btn-success {
  background: #28a745;
  color: white;
}

.btn-success:hover {
  background: #218838;
  color: white;
}

.btn-danger {
  background: #dc3545;
  color: white;
}

.btn-danger:hover {
  background: #c82333;
  color: white;
}

.btn-secondary {
  background: #6c757d;
  color: white;
}

.btn-secondary:hover {
  background: #5a6268;
  color: white;
}

.btn-warning {
  background: #ffc107;
  color: #212529;
}

.btn-warning:hover {
  background: #e0a800;
  color: #212529;
}

  .btn-sm {
    padding: 6px 12px;
    font-size: 0.875rem;
  }

.new-task-btn {
  background: white;
  color: #667eea;
  border: 2px solid #667eea;
  padding: 12px 24px;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: 8px;
  margin-bottom: 30px;
  display: inline-block;
  transition: all 0.3s;
  text-decoration: none;
}

.new-task-btn:hover {
  background: #667eea;
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

  .tasks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
  }

  .form-container {
    background: white;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    margin: 0 auto;
  }

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: #2c3e50;
}

.form-group input[type="text"],
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: 2px solid #e0e0e0;
  border-radius: 6px;
  font-size: 1rem;
  transition: border-color 0.3s;
  box-sizing: border-box;
}

.form-group input[type="text"]:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #667eea;
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-group input[type="checkbox"] {
  width: 20px;
  height: 20px;
  cursor: pointer;
}

.empty-state {
  text-align: center;
  color: white;
  padding: 60px 20px;
}

.empty-state h2 {
  font-size: 2rem;
  margin-bottom: 15px;
}

.empty-state p {
  font-size: 1.1rem;
  opacity: 0.9;
}

.alert {
  padding: 15px 20px;
  border-radius: 6px;
  margin-bottom: 20px;
}

.alert-success {
  background: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.alert-danger {
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

.text-center {
  text-align: center;
}

  @media (max-width: 768px) {
    .tasks-grid {
      grid-template-columns: 1fr;
    }

    .page-header h1 {
      font-size: 2rem;
    }
  }