/* General Styles */
    :root {
      --primary: #3498db;
      --danger: #e74c3c;
      --warning: #f39c12;
      --success: #2ecc71;
      --dark: #2c3e50;
      --light: #ecf0f1;
      --white: #ffffff;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background-color: #f5f7fa;
      color: var(--dark);
      line-height: 1.6;
    }

    /* Login Page Styles */
    .login-page {
      display: flex;
      justify-content: center;
      align-items: center;
      min-height: 100vh;
      background: linear-gradient(135deg, #6b73ff 0%, #000dff 100%);
      padding: 2rem;
    }

    .login-container {
      background: var(--white);
      padding: 2.5rem;
      border-radius: 15px;
      box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
      width: 100%;
      max-width: 450px;
      text-align: center;
      animation: fadeInUp 0.5s ease-out;
    }

    .logo {
      width: 100px;
      height: 100px;
      margin: 0 auto 1.5rem;
      display: block;
      filter: drop-shadow(0 5px 10px rgba(0, 0, 0, 0.1));
    }

    .login-container h1 {
      color: var(--dark);
      margin-bottom: 2rem;
      font-size: 2rem;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
    }

    .form-group {
      margin-bottom: 1.5rem;
      text-align: left;
    }

    .form-group label {
      display: block;
      margin-bottom: 0.5rem;
      font-weight: 600;
      color: var(--dark);
      font-size: 0.95rem;
    }

    .form-group .input-wrapper {
      position: relative;
    }

    .form-group input {
      width: 100%;
      padding: 14px 15px 14px 45px;
      border: 2px solid #e0e0e0;
      border-radius: 8px;
      font-size: 1rem;
      transition: all 0.3s;
      background-color: #f9f9f9;
    }

    .form-group input:focus {
      border-color: var(--primary);
      outline: none;
      background-color: var(--white);
      box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
    }

    .form-group .input-icon {
      position: absolute;
      left: 15px;
      top: 50%;
      transform: translateY(-50%);
      color: #95a5a6;
      font-size: 1.1rem;
    }

    button[type="submit"] {
      width: 100%;
      padding: 14px;
      background-color: var(--primary);
      color: var(--white);
      border: none;
      border-radius: 8px;
      font-size: 1rem;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s;
      margin-top: 0.5rem;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
    }

    button[type="submit"]:hover {
      background-color: #2980b9;
      transform: translateY(-2px);
      box-shadow: 0 5px 15px rgba(41, 128, 185, 0.3);
    }

    .error-message {
      color: var(--danger);
      margin-top: 1rem;
      font-size: 0.9rem;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      animation: shake 0.5s;
    }

    .login-footer {
      margin-top: 2rem;
      font-size: 0.9rem;
      color: #7f8c8d;
    }

    .login-footer a {
      color: var(--primary);
      text-decoration: none;
      font-weight: 600;
    }

    .login-footer a:hover {
      text-decoration: underline;
    }

    /* Animations */
    @keyframes fadeInUp {
      from {
        opacity: 0;
        transform: translateY(20px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    @keyframes shake {
      0%, 100% { transform: translateX(0); }
      20%, 60% { transform: translateX(-5px); }
      40%, 80% { transform: translateX(5px); }
    }

    /* Responsive Design */
    @media (max-width: 576px) {
      .login-container {
        padding: 1.5rem;
        margin: 1rem;
      }

      .login-container h1 {
        font-size: 1.5rem;
      }

      .logo {
        width: 80px;
        height: 80px;
      }
    }