/* ============================================
   JSONFormat - CSS Styles
   ============================================ */

/* --- CSS Custom Properties (Theme) --- */
:root,
[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #e9ecef;
  --bg-editor: #fafafa;
  --bg-hover: #f0f0f0;
  --bg-modal: rgba(0, 0, 0, 0.4);

  --text-primary: #1a1a2e;
  --text-secondary: #495057;
  --text-muted: #868e96;
  --text-inverse: #ffffff;

  --border-color: #dee2e6;
  --border-focus: #4a90d9;

  --accent: #4a90d9;
  --accent-hover: #357abd;
  --accent-light: #e8f0fe;

  --success: #28a745;
  --error: #dc3545;
  --warning: #ffc107;
  --info: #17a2b8;

  --syntax-string: #d63384;
  --syntax-number: #0d6efd;
  --syntax-boolean: #e67700;
  --syntax-null: #868e96;
  --syntax-key: #2b6cb0;
  --syntax-brace: #495057;

  --tree-line: #dee2e6;
  --tree-hover: #f0f4ff;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;

  --font-mono: 'SF Mono', 'Cascadia Code', 'Fira Code', 'JetBrains Mono', 'Consolas', 'Monaco', monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
}

[data-theme="dark"] {
  --bg-primary: #1a1b26;
  --bg-secondary: #24253a;
  --bg-tertiary: #2f3047;
  --bg-editor: #1e1f32;
  --bg-hover: #33344d;
  --bg-modal: rgba(0, 0, 0, 0.6);

  --text-primary: #c8d1db;
  --text-secondary: #9aa5b4;
  --text-muted: #6c7893;
  --text-inverse: #1a1b26;

  --border-color: #3a3b55;
  --border-focus: #7aa2f7;

  --accent: #7aa2f7;
  --accent-hover: #89b4fa;
  --accent-light: #2a2f4a;

  --success: #9ece6a;
  --error: #f7768e;
  --warning: #e0af68;
  --info: #7dcfff;

  --syntax-string: #9ece6a;
  --syntax-number: #ff9e64;
  --syntax-boolean: #e0af68;
  --syntax-null: #6c7893;
  --syntax-key: #7aa2f7;
  --syntax-brace: #9aa5b4;

  --tree-line: #3a3b55;
  --tree-hover: #2a2f4a;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 14px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.hidden {
  display: none !important;
}

/* --- Header --- */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1.25rem;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
  z-index: 10;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.logo-brace {
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 400;
}

.tagline {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Theme toggle icons */
[data-theme="light"] .icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.btn:hover {
  background: var(--bg-hover);
  border-color: var(--text-muted);
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--accent);
  color: var(--text-inverse);
  border-color: var(--accent);
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn-icon {
  padding: 0.4rem;
  border: none;
  background: transparent;
}

.btn-icon:hover {
  background: var(--bg-hover);
  border-radius: var(--radius-sm);
}

.btn-sm {
  padding: 0.2rem 0.5rem;
  font-size: 0.75rem;
}

.btn-view {
  border-radius: 0;
  border: 1px solid var(--border-color);
  padding: 0.3rem 0.7rem;
  font-size: 0.8rem;
}

.btn-view:first-child {
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  border-right: none;
}

.btn-view:last-child {
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.btn-view.active {
  background: var(--accent);
  color: var(--text-inverse);
  border-color: var(--accent);
}

/* --- Toolbar --- */
.toolbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.5rem 1.25rem;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
  flex-wrap: wrap;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.toolbar-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.select {
  padding: 0.35rem 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-family: var(--font-sans);
  cursor: pointer;
}

.select:focus {
  outline: none;
  border-color: var(--border-focus);
}

/* --- Main Editor Area --- */
.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.editor-container {
  flex: 1;
  display: flex;
  gap: 0;
  overflow: hidden;
}

.panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

.panel-input {
  border-right: 2px solid var(--border-color);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.35rem 0.75rem;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}

.panel-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}

.panel-info {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.editor-wrapper {
  flex: 1;
  display: flex;
  overflow: auto;
  background: var(--bg-editor);
  position: relative;
}

/* --- Line Numbers --- */
.line-numbers {
  flex-shrink: 0;
  padding: 0.75rem 0;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--text-muted);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  user-select: none;
  min-width: 3rem;
  overflow: hidden;
}

.line-numbers .line-num {
  display: block;
  padding: 0 0.5rem;
}

.line-numbers .line-num.error-line {
  background: rgba(220, 53, 69, 0.15);
  color: var(--error);
}

/* --- Editor textarea & output --- */
.editor {
  flex: 1;
  padding: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.5;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text-primary);
  resize: none;
  tab-size: 2;
  white-space: pre;
  overflow-wrap: normal;
  overflow: auto;
  min-width: 0;
}

textarea.editor {
  width: 100%;
}

.output-display {
  margin: 0;
  cursor: default;
  overflow: auto;
  min-height: 100%;
}

/* --- Syntax Highlighting (in output) --- */
.json-string { color: var(--syntax-string); }
.json-number { color: var(--syntax-number); }
.json-boolean { color: var(--syntax-boolean); }
.json-null { color: var(--syntax-null); }
.json-key { color: var(--syntax-key); }
.json-brace { color: var(--syntax-brace); }

.json-line.collapsible {
  cursor: pointer;
}

.json-line.collapsible:hover {
  background: var(--bg-hover);
}

.collapse-indicator {
  display: inline-block;
  width: 1em;
  text-align: center;
  cursor: pointer;
  user-select: none;
  color: var(--text-muted);
  font-size: 0.7rem;
  transition: transform 0.15s ease;
}

.collapse-indicator.collapsed {
  transform: rotate(-90deg);
}

.collapsed-content {
  display: none;
}

.collapsed-placeholder {
  color: var(--text-muted);
  font-style: italic;
}

/* --- Tree View --- */
.tree-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.tree-toolbar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.tree-search {
  flex: 1;
  padding: 0.3rem 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-family: var(--font-sans);
}

.tree-search:focus {
  outline: none;
  border-color: var(--border-focus);
}

.tree {
  flex: 1;
  overflow: auto;
  padding: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.6;
}

.tree-node {
  padding-left: 1.25rem;
  position: relative;
}

.tree-node::before {
  content: '';
  position: absolute;
  left: 0.4rem;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--tree-line);
}

.tree-item {
  display: flex;
  align-items: flex-start;
  gap: 0.3rem;
  padding: 0.05rem 0.3rem;
  border-radius: var(--radius-sm);
  cursor: default;
}

.tree-item:hover {
  background: var(--tree-hover);
}

.tree-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1rem;
  height: 1rem;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.7rem;
  flex-shrink: 0;
  margin-top: 0.2rem;
  transition: transform 0.15s ease;
  user-select: none;
}

.tree-toggle.collapsed {
  transform: rotate(-90deg);
}

.tree-key {
  color: var(--syntax-key);
  font-weight: 500;
}

.tree-colon {
  color: var(--text-muted);
}

.tree-value {
  word-break: break-all;
}

.tree-value.type-string { color: var(--syntax-string); }
.tree-value.type-number { color: var(--syntax-number); }
.tree-value.type-boolean { color: var(--syntax-boolean); }
.tree-value.type-null { color: var(--syntax-null); }

.tree-type-badge {
  font-size: 0.6rem;
  padding: 0 0.3rem;
  border-radius: 3px;
  background: var(--bg-tertiary);
  color: var(--text-muted);
  margin-left: 0.3rem;
  vertical-align: middle;
}

.tree-count {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.tree-path-copy {
  visibility: hidden;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.7rem;
  margin-left: 0.3rem;
  padding: 0 0.2rem;
}

.tree-item:hover .tree-path-copy {
  visibility: visible;
}

.tree-path-copy:hover {
  color: var(--accent);
}

.tree-node.search-hidden {
  display: none;
}

.tree-node.search-match > .tree-item {
  background: var(--accent-light);
}

/* --- Status Bar --- */
.status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.25rem 1.25rem;
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  font-size: 0.7rem;
  flex-shrink: 0;
}

.status-message {
  color: var(--text-secondary);
}

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

.status-stats {
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* --- Modal --- */
.modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-modal);
  z-index: 100;
  animation: fadeIn 0.15s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-content {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 90%;
  max-width: 480px;
  animation: slideUp 0.2s ease;
}

@keyframes slideUp {
  from { transform: translateY(10px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
  font-size: 1rem;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0;
  line-height: 1;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 1.25rem;
}

.modal-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--border-color);
}

.input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-editor);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-family: var(--font-sans);
}

.input:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px var(--accent-light);
}

/* --- Shortcuts Table --- */
.shortcuts-table {
  width: 100%;
  border-collapse: collapse;
}

.shortcuts-table td {
  padding: 0.4rem 0;
  font-size: 0.85rem;
}

.shortcuts-table td:first-child {
  white-space: nowrap;
  padding-right: 1.5rem;
}

kbd {
  display: inline-block;
  padding: 0.15rem 0.4rem;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-primary);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 3px;
  box-shadow: 0 1px 0 var(--border-color);
}

/* --- Toast --- */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.6rem 1.2rem;
  background: var(--text-primary);
  color: var(--bg-primary);
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  box-shadow: var(--shadow-md);
  z-index: 200;
  animation: toastIn 0.25s ease;
  white-space: nowrap;
}

@keyframes toastIn {
  from { transform: translateX(-50%) translateY(10px); opacity: 0; }
  to { transform: translateX(-50%) translateY(0); opacity: 1; }
}

/* --- Error Highlighting --- */
.error-highlight {
  background: rgba(220, 53, 69, 0.1);
  border-bottom: 2px wavy var(--error);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .header {
    padding: 0.4rem 0.75rem;
  }

  .tagline {
    display: none;
  }

  .toolbar {
    padding: 0.4rem 0.75rem;
    gap: 0.5rem;
  }

  .editor-container {
    flex-direction: column;
  }

  .panel-input {
    border-right: none;
    border-bottom: 2px solid var(--border-color);
    max-height: 40vh;
  }

  .status-bar {
    padding: 0.25rem 0.75rem;
  }
}

@media (max-width: 480px) {
  .toolbar-group:not(:first-child):not(:last-child) {
    display: none;
  }
}

/* --- Scrollbar Styling --- */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* --- Synchronized scrolling helper --- */
.editor-wrapper.synced-scroll .line-numbers,
.editor-wrapper.synced-scroll .editor {
  overflow-y: hidden;
}