:root {
  --info-foreground: #2471ed;
  --info-background: #c3daff;
  --info-text: white;
  --warning-foreground: #e9a21a;
  --warning-background: #efdfc1;
  --warning-text: black;
  --valid-foreground: #2c7f27;
  --valid-background: #d9f0d9;
  --valid-text: white;
  --invalid-foreground: #b52f2f;
  --invalid-background: #f9d6d6;
  --invalid-text: white;
  --bg-body: #e7e7e7;
  --bg-container: #ffffff;
  --border-color: #999;
  --border-neutral: #aaa;
  --shadow-color: rgba(0, 0, 0, 0.1);
  --primary-color: #004FCD;
  --primary-hover: #0056b3;
  --primary-link: #003ae5;
}

.form-container {
  /*max-width: 600px;*/
  margin: auto;
  background-color: var(--bg-container);
  padding: 10px;
  border-radius: 10px;
  box-shadow: 0 0 10px var(--shadow-color);
  border-left: 6px solid var(--primary-color);
}

h1 {
  /*text-align: center;*/
}

.message {
  padding: 1rem;
  margin-bottom: 1rem;
  border-radius: 6px;
  font-size: 1rem;
}

  .message.success {
    background-color: var(--valid-foreground);
    color: var(--valid-text);
  }

  .message.error {
    background-color: var(--invalid-foreground);
    color: var(--invalid-text);
  }

.info {
  margin-bottom: 20px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 3px var(--shadow-color);
  font-weight: normal;
  text-align: left;
  border: 1px solid var(--info-foreground);
}

.info-header {
  padding: 10px;
  margin: 0;
  color: var(--info-text);
  background-color: var(--info-foreground);
}

.info-body {
  padding: 10px;
  margin: 0;
  background-color: var(--info-background);
}

  .info-body p {
    margin: 0;
    margin-top: 10px;
  }

    .info-body p:first-child {
      margin: 0;
    }

.info.warning {
  border-color: var(--warning-foreground);
}

.warning .info-header {
  background-color: var(--warning-foreground);
  color: var(--warning-text);
}

.warning .info-body {
  background-color: var(--warning-background);
}

.info.error {
  border-color: var(--invalid-foreground);
}

.error .info-header {
  background-color: var(--invalid-foreground);
  color: var(--invalid-text);
}

.error .info-body {
  background-color: var(--invalid-background);
}

.info.success {
  border-color: var(--valid-foreground);
}

.success .info-header {
  background-color: var(--valid-foreground);
  color: var(--valid-text);
}

.success .info-body {
  background-color: var(--valid-background);
}

.new-form-group {
  display: flex;
  gap: 10px;
  flex-wrap: nowrap;
}

  .new-form-group .strasse {
    flex: 1;
  }

  .new-form-group .hausnummer {
    max-width: 140px;
  }

.form-container label {
  font-weight: bold;
  display: block;
  margin-top: 20px;
}

.required::after {
  content: " *";
  color: red;
  cursor: help;
}

input, select, textarea {
  width: 100%;
  box-sizing: border-box;
  /*padding: 10px;*/
  padding-left: 10px;
  height: 45px;
  border: 1px solid var(--border-color);
  border-bottom-width: 5px;
  border-radius: 5px;
  font-size: 16px;
  margin-top: 5px;
  transition: border-bottom-color 0.3s;
  background-color: #e5e5e5;
}

  input:required:invalid,
  select:required:invalid,
  textarea:required:invalid {
    border-bottom-color: var(--invalid-foreground);
  }

  input:required:valid,
  select:required:valid,
  textarea:required:valid {
    border-bottom-color: var(--valid-foreground);
  }

  textarea:not(:required),
  input:not(:required) {
    border-bottom-color: var(--border-neutral);
  }

  textarea:not(:placeholder-shown) {
    border-bottom-color: var(--valid-foreground);
  }

.checkbox-group {
  margin-top: 20px;
  margin-bottom: 20px;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 15px;
}

  .checkbox-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    accent-color: var(--valid-foreground);
    flex-shrink: 0;
  }

  .checkbox-item label {
    font-weight: normal;
    margin: 0;
  }

  .checkbox-item a {
    color: var(--primary-link);
    text-decoration: none;
  }

    .checkbox-item a:hover {
      text-decoration: underline;
    }

input[type="checkbox"]:required:invalid {
  outline: 2px solid var(--invalid-foreground);
  outline-offset: 2px;
}

input[type="checkbox"]:required:valid {
  accent-color: var(--valid-foreground);
}

button {
  display: block;
  width: 100%;
  padding: 15px;
  background-color: var(--primary-color);
  color: white;
  border-radius: 5px;
  border: 0;
  font-size: 18px;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.3s;
  margin-top: 30px;
}

  button:hover {
    background-color: var(--primary-hover);
  }

fieldset {
  border: none;
  margin: 0;
  padding: 0;
}

legend {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

form:valid button[type="submit"] {
  background-color: var(--valid-foreground);
  color: var(--valid-text);
}

form:invalid button[type="submit"] {
  background-color: var(--invalid-foreground);
  color: var(--invalid-text);
}