:root {
    --primary: #054d9b;
    --secondary: #ffffff;
    --text-dark: #1f2937;
  }
  
  /* Page base */
  body {
    font-family: system-ui, -apple-system, sans-serif;
    background: #f8fafc;
    margin: 0;
    padding: 40px 16px;
    align-items: center;
    justify-content: center; 
    min-height: 100vh;
    display: flex;
    align-items: center;     /* vertical center */
    justify-content: center; /* horizontal center */
  
  }
  /* Login Section */
  .login-section {
    max-width: 420px;
    margin: 0 auto;
    background: var(--secondary);
    padding: 40px 30px;
    border-radius: 24px;
    border: 1px solid #e5e7eb;
    box-shadow: 0 6px 16px rgba(5, 77, 155, 0.12);
    animation: fadeIn 0.4s ease;
  }
  
  .login-section h1 {
    font-weight: 700;
    font-size: 28px;
    margin-bottom: 24px;
    color: var(--primary);
    text-align: center;
  }
  
  .login-section label {
    display: block;
    margin: 14px 0 6px;
    font-weight: 600;
    font-size: 14px;
    color: var(--text-dark);
  }
  
  .login-section input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid #cbd5e1;
    border-radius: 12px;
    font-size: 16px;
    transition: border-color 0.2s ease;
  }
  
  .login-section input:focus {
    border-color: var(--primary);
    outline: none;
  }
  
  /* Button */
  .primary-btn {
    width: 100%;
    margin-top: 26px;
    padding: 14px;
    border-radius: 14px;
    border: none;
    background: var(--primary);
    color: #ffffff;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
  }
  
  .primary-btn:hover {
    opacity: 0.95;
  }
  
  /* Error */
  .login-error {
    margin-top: 16px;
    color: #dc2626;
    font-weight: 600;
    text-align: center;
  }
  
  /* Animation */
  @keyframes fadeIn {
    from {
      opacity: 0;
      transform: translateY(6px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }