.login-container {
  max-width: 400px;
  margin: 100px auto;
  padding: 30px;
  background-color: #ffffff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  border-radius: 12px;
  text-align: center;
}

.login-title {
  margin-bottom: 30px;
  color: var(--main-color); /* ← グローバルの色を使う */
  font-size: 24px;
  font-weight: bold;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.form-group label {
  margin-bottom: 5px;
  font-weight: 500;
  color: var(--text-color);
}

.form-group input {
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 8px;
  transition: border-color 0.3s ease;
}

.form-group input:focus {
  outline: none;
  border-color: var(--main-color);
  box-shadow: 0 0 5px rgba(31, 198, 207, 0.5);
}