:root {
  color-scheme: light dark;

  --primary-color: #007bff;
  --primary-color-hover: #0056b3;
  --secondary-color: #6c757d;
  --secondary-color-light: #d4dde2;
  --secondary-color-hover: #5a6268;
  --light-gray: #f8f9fa;
  --dark-gray: #343a40;
  --border-color: #ced4da;
  --error-color: #dc3545;
  --success-color: #28a745;

  --background-color: #fdfdfd;
  --text-color: #212529;
  --text-color-light: #f8f9fa;
  --label-color: #555;
  --json-key-color: #a52a2a;
  --json-string-color: #008000;
  --json-number-color: #0000ff;
  --json-boolean-color: #ff00ff;
  --json-null-color: #808080;
  --json-comma-color: #333;
  --json-count-color: #808080;
  --json-toggle-color: #808080;
  --json-index-color: #888;
}

@media (prefers-color-scheme: dark) {
  :root {
    --primary-color: #0d6efd;
    --primary-color-hover: #0a58ca;
    --secondary-color: #6c757d;
    --secondary-color-light: #36393b;
    --secondary-color-hover: #5c636a;
    --light-gray: #212529;
    --dark-gray: #f8f9fa;
    --border-color: #495057;
    --error-color: #ff8a80;
    --success-color: #b9f6ca;

    --background-color: #1e1e1e;
    --text-color: #e9ecef;
    --text-color-light: #121212;
    --label-color: #adb5bd;
    --json-key-color: #ffc107;
    --json-string-color: #9ccc65;
    --json-number-color: #64b5f6;
    --json-boolean-color: #ba68c8;
    --json-null-color: #9e9e9e;
    --json-comma-color: #ced4da;
    --json-count-color: #9e9e9e;
    --json-toggle-color: #ced4da;
    --json-index-color: #9e9e9e;
  }
}


body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  background-color: var(--background-color);
  color: var(--text-color);
}

body.collapsed .container {
  padding: 0;
  height: auto;
}

body.collapsed .input-area {
  display: none;
}

body.collapsed .output-area-label {
  display: none;
}

body.collapsed #jsonOutputContainer {
  border: none;
}

body.collapsed h1 {
  display: none;
}


body.collapsed #expandBtn {
  display: block;
}

.container {
  width: 100%;
  max-width: 1400px;
  height: calc(100vh);
  margin: auto;
  background-color: var(--background-color);
  padding: 25px;
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
}


h1 {
  color: var(--secondary-color-light);
  margin-top: 0;
  margin-bottom: 25px;
  flex-shrink: 0;

  a {
    font-size: 12px;
    color: var(--secondary-color-light);
  }
}

.formatter-grid {
  display: flex;
  flex-direction: column;
  gap: 20px;
  flex-grow: 1;
  min-height: 0;
}

.input-area,
.output-area {
  display: flex;
  flex-direction: column;
}

.output-area {
  flex-grow: 1;
  min-height: 0;
}

label {
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--label-color);
}

textarea#jsonInput {
  width: 100%;
  border: 1px solid var(--border-color);
  background-color: var(--background-color);
  border-radius: 6px;
  padding: 12px;
  font-family: "Courier New", Courier, monospace;
  font-size: 14px;
  resize: vertical;
  min-height: 6em;
  flex-shrink: 0;
  box-sizing: border-box;
}

#jsonOutputContainer {
  width: 100%;
  height: 100%;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  overflow: auto;
  padding: 12px;
  background-color: var(--background-color);
  box-sizing: border-box;
}

#jsonOutput {
  white-space: pre;
  font-size: 14px;
  font-family: "Courier New", Courier, monospace;
}

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

.btn {
  padding: 10px 20px;
  font-size: 16px;
  font-weight: 500;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition:
    background-color 0.2s,
    transform 0.1s;
}

.btn:active {
  transform: scale(0.98);
}

#formatBtn {
  background-color: var(--primary-color);
  color: var(--text-color-light);
}

#expandBtn {
  background-color: transparent;
  color: var(--secondary-color-light);
  display: none;
}

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

.btn-secondary {
  background-color: var(--secondary-color);
  color: var(--text-color-light);
}

.btn-secondary:hover {
  background-color: var(--secondary-color-hover);
}

#statusMessage {
  height: 20px;
  font-weight: 500;
  transition: color 0.3s;
}

.status-error {
  color: var(--error-color);
}

.status-success {
  color: var(--success-color);
}

/* --- JSON Viewer Styles --- */
.json-key {
  color: var(--json-key-color);
}

.json-string {
  color: var(--json-string-color);
}

.json-number {
  color: var(--json-number-color);
}

.json-boolean {
  color: var(--json-boolean-color);
}

.json-null {
  color: var(--json-null-color);
}

.json-comma {
  color: var(--json-comma-color);
}


.json-array-header::after {
  content: "(" attr(data-count) ")";
  color: var(--json-count-color);
  font-style: italic;
  margin: 0 4px;
  user-select: none;
}

.json-collapsible {
  list-style-type: none;
  padding-left: 2em;
  margin: 0;
}

.json-toggle {
  cursor: pointer;
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 5px solid var(--json-toggle-color);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  margin-right: 5px;
  transition: transform 0.1s ease;
}

.json-toggle.expanded {
  transform: rotate(90deg);
}

.collapsed>.json-collapsible {
  display: none;
}

ol.json-collapsible {
  counter-reset: item -1;
}

ol.json-collapsible>li::before {
  content: counter(item) ": ";
  counter-increment: item;
  color: var(--json-index-color);
  font-weight: bold;
  user-select: none;
}