/* Base Styles */
:root {
    --primary-color: #4CAF50;
    --primary-dark: #3e8e41;
    --secondary-color: #2c3e50;
    --light-color: #f5f5f5;
    --dark-color: #333;
    --error-color: #f8d7da;
    --success-color: #d4edda;
    --border-color: #ddd;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
  }
  
  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--light-color);
  }
  
  a {
    color: var(--primary-color);
    text-decoration: none;
  }
  
  a:hover {
    text-decoration: underline;
  }
  
  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
  }
  
  /* Typography */
  h1, h2, h3, h4, h5, h6 {
    margin-bottom: 1rem;
    line-height: 1.3;
  }
  
  p {
    margin-bottom: 1rem;
  }
  
  /* Forms */
  .form-group {
    margin-bottom: 1rem;
  }
  
  label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
  }
  
  input[type="text"],
  input[type="email"],
  input[type="password"],
  textarea,
  select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
  }
  
  .btn {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    text-align: center;
  }
  
  .btn:hover {
    background: var(--primary-dark);
  }
  
  .btn-block {
    display: block;
    width: 100%;
  }
  
  /* Messages */
  .message {
    margin: 1rem 0;
    padding: 0.75rem;
    border-radius: 4px;
  }
  
  .success {
    background: var(--success-color);
    color: #155724;
  }
  
  .error {
    background: var(--error-color);
    color: #721c24;
  }
  
  /* Cards */
  .card {
    background: white;
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: 2rem;
    margin-bottom: 2rem;
  }
  
  /* Utilities */
  .text-center {
    text-align: center;
  }
  
  .mt-1 { margin-top: 0.5rem; }
  .mt-2 { margin-top: 1rem; }
  .mt-3 { margin-top: 1.5rem; }
  .mt-4 { margin-top: 2rem; }
  .mb-1 { margin-bottom: 0.5rem; }
  .mb-2 { margin-bottom: 1rem; }
  .mb-3 { margin-bottom: 1.5rem; }
  .mb-4 { margin-bottom: 2rem; }