html,
body {
  margin: 0;
  min-height: 100%;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  font-family: sans-serif;
  color: #111;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 16px;
}

h1 {
  margin: 0;
  font-size: 24px;
}

p {
  margin: 8px 0 0;
}

form {
  margin-top: 16px;
}

.field-grid {
  display: grid;
  gap: 10px;
}

.field-row {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
}

.field-row-top {
  align-items: start;
}

.field-control {
  display: grid;
  gap: 6px;
}

.field-select-with-clear {
  position: relative;
  width: 100%;
}

.address-mode-blocks {
  margin-top: 12px;
}

.address-block {
  padding: 10px;
  border: 1px solid #ececec;
  border-radius: 6px;
  background: #fafafa;
}

.address-block + .address-block {
  margin-top: 10px;
}

.address-block[hidden] {
  display: none !important;
}

.field-grid-common {
  margin-top: 12px;
}

.request-preview-block {
  padding: 12px;
  border: 1px solid #d2ddff;
  border-left: 4px solid #4f7cff;
  border-radius: 8px;
  background: #f5f8ff;
}

.request-preview-block label {
  font-weight: 600;
  color: #1f3f8f;
}

.request-preview-row {
  grid-template-columns: 1fr;
  gap: 6px;
}

.request-action-row {
  grid-template-columns: 1fr;
}

label {
  font-size: 14px;
}

input[type="text"],
input[type="number"],
select {
  font: inherit;
  padding: 8px;
  border: 1px solid #cfcfcf;
  border-radius: 4px;
  background: #fff;
}

.clear-button {
  position: absolute;
  top: 50%;
  right: 6px;
  transform: translateY(-50%);
  width: 22px;
  height: 22px;
  border: 0;
  border-radius: 50%;
  background: #f3f4f6;
  cursor: pointer;
  line-height: 1;
  padding: 0;
}

.clear-button[hidden] {
  display: none;
}

.send-request-button {
  width: fit-content;
  min-width: 140px;
  padding: 8px 14px;
  border: 1px solid #1f3f8f;
  border-radius: 6px;
  background: #1f3f8f;
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}

.send-request-button:disabled {
  opacity: 0.6;
  cursor: default;
}

.select-no-arrow {
  width: 100%;
  padding-right: 34px;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image: none;
}

.input-with-clear {
  width: 100%;
  padding-right: 34px;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: textfield;
  background-image: none;
}

.input-with-clear::-webkit-calendar-picker-indicator {
  opacity: 0;
  display: none;
}

.field-select-with-clear > .select-no-arrow,
.field-select-with-clear > .input-with-clear {
  width: 100%;
}

.field-help {
  font-size: 12px;
  color: #666;
}

pre {
  margin: 0;
  padding: 8px;
  border: 1px solid #cfcfcf;
  border-radius: 4px;
  background: #fff;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 12px;
  line-height: 1.4;
}

#request-url-output {
  border-color: #b7c8ff;
  background: #eef4ff;
  color: #132a66;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.response-preview-block {
  padding: 12px;
  border: 1px solid #b7e4c7;
  border-left: 4px solid #2f9e44;
  border-radius: 8px;
  background: #f1fdf4;
}

.response-preview-block label {
  font-weight: 600;
  color: #1f6b31;
}

.response-preview-row {
  grid-template-columns: 1fr;
  gap: 6px;
}

.response-preview-block[hidden] {
  display: none !important;
}

#response-output {
  border-color: #8fd3a5;
  background: #e8f9ee;
  color: #13451f;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  max-height: 360px;
  overflow: auto;
}

.mode-options {
  display: flex;
  gap: 14px;
}

.mode-option {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-right: 12px;
}

@media (max-width: 720px) {
  .field-row {
    grid-template-columns: 1fr;
  }
}