* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', sans-serif;
}

body {
  background: #f2f2f2;
}

.container {
  display: flex;
  flex-wrap: wrap;
  min-height: 100vh;
}

.form-box {
  flex: 1 1 400px;
  padding: 40px;
  background: #fff;
}

.right-panel {
  flex: 1 1 400px;
  background: #05b279;
  color: #fff;
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

form input, form button {
  width: 100%;
  padding: 12px;
  margin: 10px 0;
  border: none;
  border-radius: 8px;
}

form input {
  background: #eee;
}

form button {
  background: #05b279;
  color: white;
  font-size: 16px;
  cursor: pointer;
}

.signup-mobile {
  text-align: center;
}

.error {
  background: #ffe6e6;
  color: #cc0000;
  border: 1px solid #cc0000;
  text-align: center;
  padding: 10px;
  margin: 10px 0;
  border-radius: 6px;
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    flex-direction: column;
  }

  .form-box,
  .right-panel {
    flex: 1 1 100%;
    width: 100%;
  }

  .form-box {
    order: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 100vh;
    padding: 30px;
  }

  .form-box form {
    width: 100%;
    max-width: 350px;
    margin: auto;
  }

  .right-panel {
    order: 2;
    display: none;
  }
}