/* Base styles and CSS variables */
:root {
    --primary: #4361ee;
    --primary-dark: #3a56d4;
    --secondary: #f8f9fa;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --border: #dee2e6;
    --card-bg: #ffffff;
    --shadow: rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --radius: 8px;
  }
  
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--secondary);
    padding: 0;
    margin: 0;
  }
  
  /* Header styles */
  .main-header {
    background-color: var(--primary);
    color: white;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 4px 6px var(--shadow);
  }
  
  .main-header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
  }
  
  .main-header p {
    font-size: 1.1rem;
    opacity: 0.9;
  }
  
  /* Task container */
  .task-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
  }
  
  /* Task card styles */
  .task-card {
    background-color: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 4px 12px var(--shadow);
    transition: var(--transition);
    height: 100%;
  }
  
  .task-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px var(--shadow);
  }
  
  .task-card-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    height: 100%;
  }
  
  .task-card h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary);
  }
  
  .task-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    flex-grow: 1;
  }
  
  /* Button styles */
  .task-button {
    display: inline-block;
    background-color: var(--primary);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 500;
    text-align: center;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    align-self: flex-start;
  }
  
  .task-button:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
  }
  
  /* Responsive adjustments */
  @media (max-width: 768px) {
    .task-container {
      grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
      padding: 1.5rem;
      gap: 1.5rem;
    }
    
    .main-header {
      padding: 1.5rem;
    }
    
    .main-header h1 {
      font-size: 2rem;
    }
  }
  
  @media (max-width: 480px) {
    .task-container {
      grid-template-columns: 1fr;
      padding: 1rem;
      gap: 1rem;
    }
    
    .main-header h1 {
      font-size: 1.75rem;
    }
    
    .task-card-content {
      padding: 1.25rem;
    }
  }
  
  /* Dark mode support */
  @media (prefers-color-scheme: dark) {
    :root {
      --primary: #4361ee;
      --primary-dark: #3a56d4;
      --secondary: #121212;
      --text-primary: #e9ecef;
      --text-secondary: #adb5bd;
      --border: #343a40;
      --card-bg: #1e1e1e;
      --shadow: rgba(0, 0, 0, 0.3);
    }
  }