/* ==========================================================================
   FUNKY DIFF VIEWER
   Visual diff comparison for text, JSON, and audit trails
   ========================================================================== */

/* Container */
.funky-diff {
  font-family: var(--pro-font-family-monospace, 'SF Mono', 'Monaco', 'Consolas', monospace);
  font-size: 0.875rem;
  border: 1px solid var(--pro-border-color);
  border-radius: var(--pro-border-radius);
  background: var(--pro-bg-secondary);
  overflow: hidden;
}

/* ==========================================================================
   HEADERS
   ========================================================================== */

.diff-header {
  display: flex;
  background: var(--pro-bg-tertiary);
  border-bottom: 1px solid var(--pro-border-color);
  padding: 0.5rem 1rem;
  font-weight: 600;
  font-family: var(--pro-font-family-base);
}

.diff-header-left,
.diff-header-right {
  flex: 1;
  padding: 0.25rem 0.5rem;
}

.diff-header-left {
  color: var(--pro-danger);
}

.diff-header-right {
  color: var(--pro-success);
}

/* ==========================================================================
   SIDE-BY-SIDE MODE
   ========================================================================== */

.funky-diff-side-by-side .diff-content {
  display: flex;
}

.diff-panel {
  flex: 1;
  overflow-x: auto;
}

.diff-panel-left {
  border-right: 1px solid var(--pro-border-color);
}

/* ==========================================================================
   LINES
   ========================================================================== */

.diff-line {
  display: flex;
  min-height: 1.5rem;
  line-height: 1.5rem;
}

.diff-line-number {
  width: 3rem;
  text-align: right;
  padding: 0 0.5rem;
  color: var(--pro-muted);
  background: var(--pro-bg-tertiary);
  border-right: 1px solid var(--pro-border-color);
  user-select: none;
  flex-shrink: 0;
}

.diff-line-content {
  flex: 1;
  padding: 0 0.5rem;
  white-space: pre;
  overflow-x: auto;
}

.diff-line-marker {
  width: 1.5rem;
  text-align: center;
  font-weight: bold;
  flex-shrink: 0;
}

/* Inline mode line numbers */
.diff-line-number-left,
.diff-line-number-right {
  width: 2.5rem;
  text-align: right;
  padding: 0 0.25rem;
  color: var(--pro-muted);
  background: var(--pro-bg-tertiary);
  user-select: none;
  flex-shrink: 0;
}

.diff-line-number-left {
  border-right: 1px solid var(--pro-border-color);
}

.diff-line-number-right {
  border-right: 1px solid var(--pro-border-color);
}

/* ==========================================================================
   DIFF STATES
   ========================================================================== */

.diff-equal {
  background: transparent;
}

.diff-add {
  background: rgba(25, 135, 84, 0.15);
}

.diff-add .diff-line-number,
.diff-add .diff-line-number-left,
.diff-add .diff-line-number-right {
  background: rgba(25, 135, 84, 0.2);
  color: var(--pro-success);
}

.diff-add .diff-line-marker {
  color: var(--pro-success);
}

.diff-remove {
  background: rgba(220, 53, 69, 0.15);
}

.diff-remove .diff-line-number,
.diff-remove .diff-line-number-left,
.diff-remove .diff-line-number-right {
  background: rgba(220, 53, 69, 0.2);
  color: var(--pro-danger);
}

.diff-remove .diff-line-marker {
  color: var(--pro-danger);
}

.diff-change {
  background: rgba(255, 193, 7, 0.1);
}

.diff-empty {
  background: var(--pro-bg-tertiary);
}

.diff-empty .diff-line-content {
  color: var(--pro-muted);
}

/* ==========================================================================
   WORD-LEVEL DIFF
   ========================================================================== */

.diff-word-add {
  background: rgba(25, 135, 84, 0.3);
  border-radius: 2px;
  padding: 0 2px;
}

.diff-word-remove {
  background: rgba(220, 53, 69, 0.3);
  text-decoration: line-through;
  border-radius: 2px;
  padding: 0 2px;
}

/* ==========================================================================
   COLLAPSIBLE
   ========================================================================== */

.diff-collapse {
  padding: 0.5rem;
  background: var(--pro-bg-tertiary);
  border-top: 1px dashed var(--pro-border-color);
  border-bottom: 1px dashed var(--pro-border-color);
}

.diff-collapse-btn {
  display: block;
  margin: 0 auto;
  background: none;
  border: none;
  color: var(--pro-primary);
  cursor: pointer;
  font-size: 0.875rem;
}

.diff-collapse-btn:hover {
  text-decoration: underline;
}

.diff-collapse-content {
  display: none;
  text-align: left;
}

/* ==========================================================================
   JSON DIFF
   ========================================================================== */

.funky-diff-json {
  font-family: var(--pro-font-family-base);
}

.funky-diff-json .diff-content {
  padding: 0.5rem;
}

.diff-json-row {
  display: flex;
  align-items: flex-start;
  padding: 0.25rem 0.5rem;
  border-radius: var(--pro-border-radius-sm);
  margin-bottom: 2px;
}

.diff-json-row:hover {
  background: var(--pro-bg-hover);
}

.diff-json-key {
  font-weight: 600;
  color: var(--pro-text);
  min-width: 150px;
  flex-shrink: 0;
}

.diff-json-value {
  flex: 1;
  word-break: break-word;
}

.diff-json-arrow {
  color: var(--pro-muted);
  padding: 0 0.75rem;
  flex-shrink: 0;
}

.diff-json-type {
  color: var(--pro-muted);
  font-size: 0.75rem;
  margin-left: 0.5rem;
}

.diff-json-left.diff-remove {
  color: var(--pro-danger);
  text-decoration: line-through;
}

.diff-json-right.diff-add {
  color: var(--pro-success);
  font-weight: 500;
}

.diff-json-left.diff-empty,
.diff-json-right.diff-empty {
  color: var(--pro-muted);
  font-style: italic;
}

/* JSON Types */
.diff-json-string { color: var(--pro-success); }
.diff-json-number { color: var(--pro-info); }
.diff-json-boolean { color: var(--pro-warning); }
.diff-json-null { color: var(--pro-muted); font-style: italic; }
.diff-json-undefined { color: var(--pro-muted); font-style: italic; }
.diff-json-array { color: var(--pro-text); }
.diff-json-object { color: var(--pro-text); }
.diff-json-date { color: var(--pro-info); }
.diff-json-unknown { color: var(--pro-muted); }

/* Nested Objects */
.diff-json-toggle {
  background: none;
  border: none;
  color: var(--pro-muted);
  cursor: pointer;
  padding: 0;
  width: 1.25rem;
  margin-right: 0.25rem;
  flex-shrink: 0;
}

.diff-json-toggle:hover {
  color: var(--pro-text);
}

.diff-json-nested {
  width: 100%;
  padding-left: 1.5rem;
  border-left: 1px dashed var(--pro-border-color);
  margin-left: 0.5rem;
  margin-top: 0.25rem;
}

.diff-json-changed-badge {
  color: var(--pro-warning);
  font-size: 0.5rem;
  margin-left: 0.5rem;
}

/* Summary */
.diff-json-summary {
  display: flex;
  gap: 1rem;
  padding: 0.5rem 1rem;
  background: var(--pro-bg-tertiary);
  border-bottom: 1px solid var(--pro-border-color);
  font-size: 0.875rem;
}

.diff-json-summary-add { color: var(--pro-success); }
.diff-json-summary-remove { color: var(--pro-danger); }
.diff-json-summary-change { color: var(--pro-warning); }
.diff-json-summary-equal { color: var(--pro-muted); }

/* ==========================================================================
   AUDIT DIFF
   ========================================================================== */

.funky-diff-audit {
  font-family: var(--pro-font-family-base);
}

.diff-audit-header {
  padding: 0.75rem 1rem;
  background: var(--pro-bg-tertiary);
  border-bottom: 1px solid var(--pro-border-color);
}

.diff-audit-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.diff-audit-action {
  font-size: 0.75rem;
  text-transform: uppercase;
}

.diff-audit-user {
  font-weight: 500;
}

.diff-audit-user i,
.diff-audit-time i {
  margin-right: 0.25rem;
  opacity: 0.7;
}

.diff-audit-time {
  color: var(--pro-muted);
  font-size: 0.875rem;
}

.diff-audit-summary {
  display: flex;
  gap: 1rem;
  padding: 0.5rem 1rem;
  background: var(--pro-bg-tertiary);
  border-bottom: 1px solid var(--pro-border-color);
  font-size: 0.875rem;
}

.diff-audit-table {
  width: 100%;
  border-collapse: collapse;
  margin: 0;
}

.diff-audit-table th {
  background: var(--pro-bg-secondary);
  padding: 0.5rem 1rem;
  text-align: left;
  font-weight: 600;
  border-bottom: 1px solid var(--pro-border-color);
}

.diff-audit-table td {
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--pro-border-color);
  vertical-align: top;
}

.diff-audit-field {
  font-weight: 500;
  width: 150px;
}

.diff-audit-before,
.diff-audit-after {
  word-break: break-word;
}

.diff-audit-table tr.diff-change td {
  background: rgba(255, 193, 7, 0.05);
}

.diff-audit-table tr.diff-add td {
  background: rgba(25, 135, 84, 0.05);
}

.diff-audit-table tr.diff-remove td {
  background: rgba(220, 53, 69, 0.05);
}

.diff-audit-table tr.diff-equal.text-muted td {
  opacity: 0.7;
}

.diff-audit-before.diff-remove {
  color: var(--pro-danger);
}

.diff-audit-after.diff-add {
  color: var(--pro-success);
}

/* ==========================================================================
   SYNC SCROLL (SPLIT MODE)
   ========================================================================== */

.funky-diff-split .diff-content {
  display: flex;
  max-height: 500px;
}

.funky-diff-split .diff-panel {
  overflow-y: auto;
  overflow-x: auto;
}

/* ==========================================================================
   DARK THEME
   ========================================================================== */

[data-theme="dark"] .funky-diff {
  background: var(--pro-bg-secondary);
}

[data-theme="dark"] .diff-add {
  background: rgba(25, 135, 84, 0.2);
}

[data-theme="dark"] .diff-remove {
  background: rgba(220, 53, 69, 0.2);
}

[data-theme="dark"] .diff-word-add {
  background: rgba(25, 135, 84, 0.4);
}

[data-theme="dark"] .diff-word-remove {
  background: rgba(220, 53, 69, 0.4);
}

[data-theme="dark"] .diff-audit-table tr.diff-change td {
  background: rgba(255, 193, 7, 0.1);
}

[data-theme="dark"] .diff-audit-table tr.diff-add td {
  background: rgba(25, 135, 84, 0.1);
}

[data-theme="dark"] .diff-audit-table tr.diff-remove td {
  background: rgba(220, 53, 69, 0.1);
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */

@media (max-width: 768px) {
  .funky-diff-side-by-side .diff-content {
    flex-direction: column;
  }
  
  .diff-panel-left {
    border-right: none;
    border-bottom: 1px solid var(--pro-border-color);
  }
  
  .diff-json-row {
    flex-wrap: wrap;
  }
  
  .diff-json-key {
    width: 100%;
    margin-bottom: 0.25rem;
  }
  
  .diff-json-arrow {
    display: none;
  }
  
  .diff-audit-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  
  .diff-audit-table th,
  .diff-audit-table td {
    padding: 0.375rem 0.5rem;
    font-size: 0.875rem;
  }
  
  .diff-audit-field {
    width: 100px;
  }
}

/* ==========================================================================
   HIGH CONTRAST MODE
   ========================================================================== */

@media (prefers-contrast: high) {
  .funky-diff {
    border-width: 2px;
  }

  .diff-header {
    border-bottom-width: 2px;
    font-weight: 700;
  }

  .diff-panel-left {
    border-right-width: 2px;
  }

  .diff-line-number {
    border-right-width: 2px;
    font-weight: 600;
  }

  .diff-line-number-left,
  .diff-line-number-right {
    border-right-width: 2px;
  }

  /* Diff states - use borders instead of background colors */
  .diff-add {
    background: transparent;
    border-left: 4px solid var(--pro-success);
  }

  .diff-add .diff-line-number,
  .diff-add .diff-line-number-left,
  .diff-add .diff-line-number-right {
    background: transparent;
    font-weight: 700;
  }

  .diff-remove {
    background: transparent;
    border-left: 4px solid var(--pro-danger);
  }

  .diff-remove .diff-line-number,
  .diff-remove .diff-line-number-left,
  .diff-remove .diff-line-number-right {
    background: transparent;
    font-weight: 700;
  }

  .diff-change {
    background: transparent;
    border-left: 4px solid var(--pro-warning);
  }

  /* Word-level diff - use text decoration */
  .diff-word-add {
    background: transparent;
    text-decoration: underline;
    text-decoration-style: double;
    font-weight: 700;
  }

  .diff-word-remove {
    background: transparent;
    text-decoration: line-through;
    font-weight: 700;
  }

  /* Collapsible */
  .diff-collapse {
    border-top-width: 2px;
    border-bottom-width: 2px;
  }

  .diff-collapse-btn:focus {
    outline: 3px solid;
    outline-offset: 2px;
  }

  /* JSON Diff */
  .diff-json-row:hover {
    border: 2px solid currentColor;
  }

  .diff-json-key {
    font-weight: 700;
  }

  .diff-json-toggle:focus {
    outline: 3px solid;
    outline-offset: 2px;
  }

  .diff-json-nested {
    border-left-width: 2px;
    border-left-style: solid;
  }

  .diff-json-summary {
    border-bottom-width: 2px;
    font-weight: 600;
  }

  /* Audit Diff */
  .diff-audit-header {
    border-bottom-width: 2px;
  }

  .diff-audit-summary {
    border-bottom-width: 2px;
    font-weight: 600;
  }

  .diff-audit-table th {
    border-bottom-width: 2px;
    font-weight: 700;
  }

  .diff-audit-table td {
    border-bottom-width: 2px;
  }

  .diff-audit-table tr.diff-change td,
  .diff-audit-table tr.diff-add td,
  .diff-audit-table tr.diff-remove td {
    background: transparent;
    border-left: 4px solid;
  }

  .diff-audit-table tr.diff-change td {
    border-left-color: var(--pro-warning);
  }

  .diff-audit-table tr.diff-add td {
    border-left-color: var(--pro-success);
  }

  .diff-audit-table tr.diff-remove td {
    border-left-color: var(--pro-danger);
  }

  .diff-audit-before.diff-remove {
    text-decoration: line-through;
    font-weight: 700;
  }

  .diff-audit-after.diff-add {
    text-decoration: underline;
    font-weight: 700;
  }
}

/* ==========================================================================
   DIFF PLAYGROUND DEMO STYLES
   ========================================================================== */

.diff-demo {
  padding: var(--pro-spacing-lg, 1.5rem);
}

.diff-demo__section {
  margin-bottom: var(--pro-spacing-xl, 2rem);
}

.diff-demo__section h3 {
  margin-bottom: var(--pro-spacing-sm, 0.5rem);
  color: var(--pro-text, #c9d1d9);
  font-size: var(--pro-font-size-lg, 1.125rem);
}

.diff-demo__section h4 {
  margin-bottom: var(--pro-spacing-xs, 0.25rem);
  color: var(--pro-text-muted, #8b949e);
  font-size: var(--pro-font-size-sm, 0.875rem);
  font-weight: var(--pro-font-weight-medium, 500);
}

.diff-demo__area {
  padding: var(--pro-spacing-md, 1rem);
  background-color: var(--pro-bg-secondary, #161b22);
  border: 1px solid var(--pro-border-color, #30363d);
  border-radius: var(--pro-border-radius, 6px);
  margin-bottom: var(--pro-spacing-sm, 0.5rem);
}

/* Constrain diff viewer height for demo */
.diff-demo__area .funky-diff {
  max-height: 350px;
}

.diff-demo__area .funky-diff .diff-content {
  max-height: 300px;
  overflow: auto;
}

/* State Display */
.diff-demo__state {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--pro-spacing-md, 1rem);
  padding: var(--pro-spacing-md, 1rem);
  background-color: var(--pro-bg-secondary, #161b22);
  border: 1px solid var(--pro-border-color, #30363d);
  border-radius: var(--pro-border-radius, 6px);
}

.diff-demo__state-item {
  display: flex;
  flex-direction: column;
  gap: var(--pro-spacing-xs, 0.25rem);
}

.diff-demo__state-label {
  font-size: var(--pro-font-size-xs, 0.75rem);
  color: var(--pro-text-muted, #8b949e);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.diff-demo__state-value {
  font-size: var(--pro-font-size-base, 1rem);
  color: var(--pro-text, #c9d1d9);
  font-weight: var(--pro-font-weight-medium, 500);
}

.diff-demo__state-value--add {
  color: var(--pro-success, #3fb950);
}

.diff-demo__state-value--remove {
  color: var(--pro-danger, #f85149);
}

.diff-demo__state-value--change {
  color: var(--pro-warning, #d29922);
}

/* Controls */
.diff-demo__controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--pro-spacing-lg, 1.5rem);
}

.diff-demo__control-group {
  padding: var(--pro-spacing-md, 1rem);
  background-color: var(--pro-bg-secondary, #161b22);
  border: 1px solid var(--pro-border-color, #30363d);
  border-radius: var(--pro-border-radius, 6px);
}

.diff-demo__buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--pro-spacing-xs, 0.25rem);
  margin-top: var(--pro-spacing-sm, 0.5rem);
}

/* Info Box */
.diff-demo__info {
  padding: var(--pro-spacing-md, 1rem);
  background-color: var(--pro-bg-secondary, #161b22);
  border: 1px solid var(--pro-border-color, #30363d);
  border-radius: var(--pro-border-radius, 6px);
}

.diff-demo__info p {
  margin-bottom: var(--pro-spacing-sm, 0.5rem);
  color: var(--pro-text, #c9d1d9);
}

.diff-demo__info ul {
  margin: 0 0 var(--pro-spacing-sm, 0.5rem) 0;
  padding-left: var(--pro-spacing-lg, 1.5rem);
  color: var(--pro-text-muted, #8b949e);
}

.diff-demo__info li {
  margin-bottom: var(--pro-spacing-xs, 0.25rem);
}

.diff-demo__info strong {
  color: var(--pro-text, #c9d1d9);
}

/* Event Log */
.diff-demo__log-controls {
  margin-bottom: var(--pro-spacing-sm, 0.5rem);
}

.diff-demo__log {
  margin: 0;
  padding: var(--pro-spacing-md, 1rem);
  max-height: 200px;
  overflow: auto;
  font-size: var(--pro-font-size-sm, 0.875rem);
  font-family: var(--pro-font-mono, monospace);
  color: var(--pro-text-muted, #8b949e);
  background-color: var(--pro-bg-secondary, #161b22);
  border: 1px solid var(--pro-border-color, #30363d);
  border-radius: var(--pro-border-radius, 6px);
  white-space: pre-wrap;
  word-break: break-word;
}

/* Responsive */
@media (max-width: 767.98px) {
  .diff-demo {
    padding: var(--pro-spacing-md, 1rem);
  }

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

  .diff-demo__state {
    grid-template-columns: repeat(2, 1fr);
  }
}