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

:root {
  --bg-primary: #0c0c18;
  --bg-secondary: #12122a;
  --bg-card: rgba(22, 22, 50, 0.8);
  --bg-editor: rgba(10, 10, 24, 0.9);
  --bg-hover: rgba(40, 40, 80, 0.6);
  --border: rgba(108, 92, 231, 0.12);
  --border-focus: rgba(108, 92, 231, 0.5);
  --text-primary: #e4e4f0;
  --text-secondary: #8888aa;
  --text-muted: #555577;
  --accent: #6c5ce7;
  --accent-light: #a29bfe;
  --accent-glow: rgba(108, 92, 231, 0.25);
  --success: #00cec9;
  --success-bg: rgba(0, 206, 201, 0.08);
  --danger: #ff6b6b;
  --danger-bg: rgba(255, 107, 107, 0.08);
  --warning: #feca57;
  --radius: 14px;
  --radius-sm: 8px;
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  background-image:
    radial-gradient(ellipse at 20% 50%, rgba(108, 92, 231, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(162, 155, 254, 0.04) 0%, transparent 50%);
}

::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 3px;
}

/* ===== Container ===== */
.container {
  width: 100%;
  max-width: 1200px;
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ===== Header ===== */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-icon {
  font-size: 32px;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 12px var(--accent-glow));
}

.logo-text {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
}

.logo-sub {
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.header-actions {
  display: flex;
  gap: 8px;
}

/* ===== Center Actions ===== */
.center-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 0;
}

.center-actions .btn {
  width: 120px;
  justify-content: center;
  font-size: 13px;
}

.center-divider {
  width: 40px;
  height: 1px;
  background: var(--border);
  margin: 4px 0;
}

.indent-selector-vertical {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.indent-selector-vertical select {
  padding: 6px 10px;
  background: var(--bg-editor);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  outline: none;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.indent-selector-vertical select:focus {
  border-color: var(--border-focus);
}

/* ===== Buttons ===== */
.btn {
  padding: 10px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-hover);
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #7c6cf0);
  border-color: var(--accent);
  color: white;
  font-weight: 600;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #7c6cf0, var(--accent-light));
  box-shadow: 0 4px 24px var(--accent-glow);
}

.btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--text-secondary);
}

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

.btn-sm {
  padding: 5px 12px;
  font-size: 12px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-secondary);
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  transition: var(--transition);
}

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

.btn-icon {
  font-size: 14px;
}

/* ===== Message ===== */
.message {
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all 0.3s ease;
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  padding: 0 16px;
}

.message.show {
  max-height: 60px;
  opacity: 1;
  padding: 12px 16px;
}

.message.success {
  background: var(--success-bg);
  border: 1px solid rgba(0, 206, 201, 0.25);
  color: var(--success);
}

.message.error {
  background: var(--danger-bg);
  border: 1px solid rgba(255, 107, 107, 0.25);
  color: var(--danger);
}

/* ===== Editor Area ===== */
.editor-area {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 12px;
  min-height: 420px;
  align-items: stretch;
}

.editor-panel {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}

.editor-panel:focus-within {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: rgba(0, 0, 0, 0.2);
  border-bottom: 1px solid var(--border);
}

.panel-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.panel-actions {
  display: flex;
  gap: 6px;
}

.editor-wrap {
  display: flex;
  flex: 1;
  overflow: hidden;
  position: relative;
}

/* ===== Drop Overlay ===== */
.drop-overlay {
  display: none;
  position: absolute;
  inset: 0;
  background: rgba(108, 92, 231, 0.12);
  border: 2px dashed var(--accent);
  border-radius: 8px;
  z-index: 10;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}

.drop-overlay.visible {
  display: flex;
}

.drop-overlay-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--accent-light);
  font-size: 14px;
  font-weight: 500;
}

.drop-icon {
  font-size: 36px;
  animation: dropBounce 1s ease infinite;
}

@keyframes dropBounce {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-6px);
  }
}

.editor-panel.drag-over {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow), 0 0 30px var(--accent-glow);
}

.line-numbers {
  width: 44px;
  padding: 14px 8px;
  background: rgba(0, 0, 0, 0.15);
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  line-height: 1.65;
  text-align: right;
  user-select: none;
  overflow: hidden;
  white-space: pre-line;
  border-right: 1px solid var(--border);
}

textarea {
  flex: 1;
  padding: 14px 16px;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  line-height: 1.65;
  resize: none;
  outline: none;
  white-space: pre;
  overflow-wrap: normal;
  overflow-x: auto;
}

textarea::placeholder {
  color: var(--text-muted);
  font-family: 'Inter', sans-serif;
  font-style: italic;
}

textarea[readonly] {
  color: var(--accent-light);
}

/* ===== Stats Bar ===== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.stat {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.stat:hover {
  border-color: rgba(108, 92, 231, 0.25);
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
}

.stat-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-light);
  font-family: 'JetBrains Mono', monospace;
}

/* ===== Panel Tabs ===== */
.panel-tabs {
  display: flex;
  gap: 2px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 6px;
  padding: 2px;
}

.tab-btn {
  padding: 5px 14px;
  font-size: 12px;
  font-weight: 500;
  font-family: 'Inter', sans-serif;
  background: transparent;
  border: none;
  border-radius: 4px;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}

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

.tab-btn.active {
  background: var(--accent);
  color: white;
}

/* ===== Tree View ===== */
.tree-view {
  flex: 1;
  overflow: auto;
  padding: 14px 16px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  line-height: 1.7;
}

.tree-placeholder {
  color: var(--text-muted);
  font-family: 'Inter', sans-serif;
  font-style: italic;
  text-align: center;
  padding: 40px 0;
}

.tree-item {
  padding-left: 20px;
  position: relative;
}

.tree-item::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--border);
}

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

.tree-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  font-size: 10px;
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--text-secondary);
  cursor: pointer;
  margin-right: 4px;
  transition: var(--transition);
  vertical-align: middle;
  line-height: 1;
}

.tree-toggle:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.tree-row {
  padding: 1px 0;
  border-radius: 4px;
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.tree-row:hover {
  background: rgba(108, 92, 231, 0.06);
}

/* Data Type Colors */
.type-string {
  color: #00b894;
}

.type-number {
  color: #fdcb6e;
}

.type-boolean {
  color: #e17055;
}

.type-null {
  color: #636e72;
  font-style: italic;
}

.type-bracket {
  color: var(--text-muted);
}

.type-badge {
  display: inline-block;
  padding: 0 5px;
  font-size: 9px;
  font-weight: 600;
  border-radius: 3px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  vertical-align: middle;
  line-height: 16px;
}

.badge-string {
  background: rgba(0, 184, 148, 0.12);
  color: #00b894;
}

.badge-number {
  background: rgba(253, 203, 110, 0.12);
  color: #fdcb6e;
}

.badge-boolean {
  background: rgba(225, 112, 85, 0.12);
  color: #e17055;
}

.badge-null {
  background: rgba(99, 110, 114, 0.15);
  color: #636e72;
}

.badge-object {
  background: rgba(108, 92, 231, 0.12);
  color: var(--accent-light);
}

.badge-array {
  background: rgba(0, 206, 201, 0.12);
  color: var(--success);
}

.tree-count {
  font-size: 11px;
  color: var(--text-muted);
}

.tree-children.collapsed {
  display: none;
}

/* ===== Ad Slots ===== */
.ad-slot {
  width: 100%;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.ad-slot ins {
  width: 100%;
}

/* ===== Extra Tools Section ===== */
.tools-section {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.tools-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-secondary);
}

.tools-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: visible;
  transition: var(--transition);
}

.tool-card:hover {
  border-color: rgba(108, 92, 231, 0.25);
}

.tool-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  cursor: pointer;
  user-select: none;
  background: rgba(0, 0, 0, 0.15);
  transition: var(--transition);
}

.tool-card-header:hover {
  background: rgba(0, 0, 0, 0.25);
}

.tool-card-title {
  font-size: 14px;
  font-weight: 600;
}

.tool-card-toggle {
  font-size: 12px;
  color: var(--text-muted);
  transition: transform 0.2s ease;
}

.tool-card-body {
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: visible;
}

.tool-card-body.collapsed {
  max-height: 0;
  padding-top: 0;
  padding-bottom: 0;
  opacity: 0;
  overflow: hidden;
  pointer-events: none;
}

.tool-desc {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

.tool-textarea {
  width: 100%;
  flex: 1 1 auto;
  min-height: 80px;
  padding: 12px;
  background: var(--bg-editor);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  line-height: 1.6;
  resize: vertical !important;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.tool-textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.tool-textarea[readonly] {
  color: var(--accent-light);
}

.tool-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tool-actions .btn {
  font-size: 12px;
  padding: 8px 14px;
}

/* Diff specific */
.diff-inputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.diff-panel {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.diff-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.diff-result {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  line-height: 1.7;
  background: var(--bg-editor);
  border-radius: var(--radius-sm);
  overflow: auto;
  max-height: 300px;
}

.diff-result:empty {
  display: none;
}

.diff-line {
  padding: 2px 12px;
  white-space: pre;
}

.diff-added {
  background: rgba(0, 206, 201, 0.08);
  color: var(--success);
}

.diff-removed {
  background: rgba(255, 107, 107, 0.08);
  color: var(--danger);
}

.diff-unchanged {
  color: var(--text-muted);
}

.diff-summary {
  padding: 10px 12px;
  font-size: 12px;
  color: var(--text-secondary);
  border-top: 1px solid var(--border);
}

/* ===== Footer ===== */
.footer {
  text-align: center;
  padding: 20px;
  font-size: 12px;
  color: var(--text-muted);
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--accent);
  color: white;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 500;
  box-shadow: 0 8px 30px var(--accent-glow);
  opacity: 0;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1000;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .container {
    padding: 16px 12px;
  }

  .header {
    flex-direction: column;
    align-items: flex-start;
  }

  .editor-area {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .center-actions {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    padding: 8px 0;
  }

  .center-actions .btn {
    width: auto;
  }

  .center-divider {
    display: none;
  }

  .editor-panel {
    min-height: 250px;
  }

  .stats-bar {
    grid-template-columns: 1fr 1fr;
  }

  .tools-grid {
    grid-template-columns: 1fr;
  }

  .diff-inputs {
    grid-template-columns: 1fr;
  }
}