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

    body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background: linear-gradient(135deg, #2994ff 0%, #004792 100%);
      display: flex;
      justify-content: center;
      align-items: center;
      min-height: 100vh;
      padding: 20px;
    }

    .login-container {
      background: white;
      padding: 40px;
      border-radius: 12px;
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
      width: 100%;
      max-width: 400px;
      position: relative;
      overflow: hidden;
    }

    .login-container::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: linear-gradient(90deg, #007bff, #0056b3);
    }

    .login-header {
      text-align: center;
      margin-bottom: 30px;
    }

    .login-header img {
      width: 80px;
    }

    .login-title {
      font-size: 28px;
      font-weight: 600;
      color: #333;
      margin-bottom: 5px;
    }

    .login-subtitle {
      font-size: 14px;
      color: #6c757d;
      font-weight: 400;
    }

    .logo-mpl {
      display: flex;
      justify-content: center;
      margin-top: 20px;
    }

    .logo-mpl img {
      width: 200px;
      margin-top: 10px;
      display: inline-block;
    }

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

    .form-label {
      display: block;
      margin-bottom: 6px;
      font-weight: 500;
      color: #495057;
      font-size: 14px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 2px solid #e9ecef;
      border-radius: 8px;
      font-size: 16px;
      transition: all 0.3s ease;
      background: #f8f9fa;
    }

    .form-control:focus {
      outline: none;
      border-color: #007bff;
      background: white;
      box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
    }

    .form-control::placeholder {
      color: #adb5bd;
    }

    .btn {
      width: 100%;
      padding: 14px 20px;
      border: none;
      border-radius: 8px;
      font-size: 16px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .btn-primary {
      background: linear-gradient(135deg, #007bff 0%, #014c9c 100%);
      color: white;
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, #014c9c 0%, #007bff 100%);
      transform: translateY(-2px);
      box-shadow: 0 5px 15px rgba(0, 123, 255, 0.3);
    }

    .btn-primary:active {
      transform: translateY(0);
    }

    .alert {
      padding: 12px 16px;
      margin-top: 20px;
      border: 1px solid transparent;
      border-radius: 6px;
      font-size: 14px;
      text-align: center;
    }

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

    .login-footer {
      text-align: center;
      margin-top: 30px;
      padding-top: 20px;
      border-top: 1px solid #e9ecef;
    }

    .login-footer p {
      color: #6c757d;
      font-size: 12px;
      margin: 0;
    }

    .input-icon {
      position: relative;
    }

    .input-icon::before {
      content: '';
      position: absolute;
      left: 12px;
      top: 50%;
      transform: translateY(-50%);
      width: 16px;
      height: 16px;
      background-size: contain;
      background-repeat: no-repeat;
      z-index: 1;
    }

    .input-icon.user::before {
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%236c757d' viewBox='0 0 24 24'%3E%3Cpath d='M12 12c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm0 2c-2.67 0-8 1.34-8 4v2h16v-2c0-2.66-5.33-4-8-4z'/%3E%3C/svg%3E");
    }

    .input-icon.password::before {
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%236c757d' viewBox='0 0 24 24'%3E%3Cpath d='M18 8h-1V6c0-2.76-2.24-5-5-5S7 3.24 7 6v2H6c-1.1 0-2 .9-2 2v10c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V10c0-1.1-.9-2-2-2zM9 6c0-1.66 1.34-3 3-3s3 1.34 3 3v2H9V6z'/%3E%3C/svg%3E");
    }

    .input-icon .form-control {
      padding-left: 44px;
    }

    .loading {
      display: none;
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      width: 20px;
      height: 20px;
      border: 2px solid #ffffff;
      border-top: 2px solid transparent;
      border-radius: 50%;
      animation: spin 1s linear infinite;
    }

    @keyframes spin {
      0% { transform: translate(-50%, -50%) rotate(0deg); }
      100% { transform: translate(-50%, -50%) rotate(360deg); }
    }

    .btn-loading {
      position: relative;
      color: transparent;
    }

    .btn-loading .loading {
      display: block;
    }

    @media (max-width: 480px) {
      .login-container {
        padding: 30px 20px;
        margin: 10px;
      }

      .login-title {
        font-size: 24px;
      }

      .form-control {
        font-size: 16px; /* Evita zoom no iOS */
      }
    }

    /* Animação de entrada */
    .login-container {
      animation: slideUp 0.6s ease-out;
    }

    @keyframes slideUp {
      from {
        opacity: 0;
        transform: translateY(30px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    .form-group {
      position: relative;
    }

    .form-control:focus + .form-label,
    .form-control:not(:placeholder-shown) + .form-label {
      transform: translateY(-25px) scale(0.85);
      color: #007bff;
    }

    .floating-label {
      position: absolute;
      top: 12px;
      left: 16px;
      color: #adb5bd;
      font-size: 16px;
      pointer-events: none;
      transition: all 0.3s ease;
      background: white;
      padding: 0 4px;
    }

    .input-icon .floating-label {
      left: 44px;
    }