.text-diff-tool .text-diff-panels,
.text-diff-tool .text-diff-panels * {
  box-sizing: border-box;
}

.text-diff-tool .text-diff-panels {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  row-gap: 16px;
}

.text-diff-tool .text-diff-panels > [class*="col-"] {
  display: flex;
  min-width: 0;
}

.text-diff-input-panel,
.text-diff-result-panel {
  width: 100%;
  min-width: 0;
}

.text-diff-panel-header {
  gap: 12px;
}

.text-diff-panel-header > span:first-child {
  flex: 1;
  min-width: 0;
}

.text-diff-panel-header i {
  margin-right: 6px;
}

.text-diff-panel-status,
.text-diff-result-status {
  flex: 0 1 auto;
  min-width: 0;
  color: var(--text-3);
  font-size: 12.5px;
  font-weight: 500;
  text-align: right;
  min-height: 2.8em;
}

.text-diff-input-body {
  gap: 12px;
  min-width: 0;
}

.text-diff-input-body .td-input {
  width: 100%;
  min-height: 320px;
  max-height: none;
  flex: 1 1 auto;
  resize: vertical;
  font-family: var(--font-mono, ui-monospace, SFMono-Regular, Menlo, Consolas, monospace);
  font-size: 13.5px;
  line-height: 1.55;
  white-space: pre;
  overflow-wrap: normal;
  word-break: normal;
}

.text-diff-input-body .td-input::placeholder {
  color: var(--text-3);
}

.text-diff-input-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.text-diff-options {
  margin-top: 16px;
}

.text-diff-action-row,
.text-diff-option-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  min-width: 0;
}

.text-diff-action-row {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}

.text-diff-option-grid {
  padding: 12px 16px;
}

.text-diff-check {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-width: 0;
  margin: 0;
  color: var(--text);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  user-select: none;
}

.text-diff-check input {
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin: 0;
  accent-color: var(--primary);
  cursor: pointer;
}

.text-diff-action-row .btn {
  justify-content: center;
}

.text-diff-action-row .btn-primary {
  min-width: 150px;
}

.text-diff-message {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 10px 16px;
  border-top: 1px solid var(--border);
  background: var(--danger-soft);
  color: var(--danger);
  font-size: 13.5px;
  line-height: 1.45;
}

.text-diff-message i {
  margin-top: 2px;
}

.text-diff-result-panel {
  margin-top: 16px;
}

.text-diff-result-body {
  gap: 12px;
  min-width: 0;
  min-height: 0;
}

.result-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.result-toolbar-stats,
.text-diff-result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-width: 0;
}

.stat-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--text-2);
  font-size: 12px;
  white-space: nowrap;
}

.stat-chip b {
  color: var(--primary);
  font-family: var(--font-mono, ui-monospace, SFMono-Regular, Menlo, Consolas, monospace);
}

.text-diff-note {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-soft);
  color: var(--text-3);
  font-size: 12.5px;
  line-height: 1.45;
}

.text-diff-note i {
  margin-top: 1px;
  color: var(--primary);
}

.text-diff-diff-view {
  flex: 1 1 auto;
  min-height: 280px;
  max-height: 560px;
  overflow: auto;
  overscroll-behavior: contain;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
}

.td-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 280px;
  padding: 30px 20px;
  text-align: center;
  color: var(--text-3);
}

.td-empty-state i {
  font-size: 34px;
  color: var(--text-3);
}

.td-empty-state p {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
}

.td-empty-state .td-empty-sub {
  font-size: 12.5px;
}

.td-diff-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  font-family: var(--font-mono, ui-monospace, SFMono-Regular, Menlo, Consolas, monospace);
  font-size: 13px;
  line-height: 1.5;
}

.td-col-ln {
  width: 46px;
}

.td-diff-table thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  padding: 8px 10px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
  color: var(--text-2);
  font-family: var(--font-sans, -apple-system, "Segoe UI", Roboto, sans-serif);
  font-size: 12.5px;
  font-weight: 600;
  text-align: left;
}

.td-diff-table thead th:nth-child(2) {
  border-right: 1px solid var(--border);
}

.td-row td {
  padding: 2px 10px;
  vertical-align: top;
  border-bottom: 1px solid rgba(127, 127, 127, .12);
  white-space: pre-wrap;
  overflow-wrap: break-word;
  word-break: break-word;
}

.td-ln {
  color: var(--text-3);
  text-align: right;
  user-select: none;
  background: rgba(127, 127, 127, .05);
}

.td-diff-table .td-ln + .td-text {
  border-right: 1px solid var(--border);
}

.td-text {
  color: var(--text);
}

.td-text-empty {
  background: rgba(127, 127, 127, .04);
}

.td-ln-del {
  background: #fde8e8;
  color: #9b1c1c;
}

.td-text-del {
  background: #fdecec;
}

.td-ln-add {
  background: #e6f6e6;
  color: #166534;
}

.td-text-add {
  background: #ecf9ec;
}

.td-row-ellipsis td {
  padding: 6px 10px;
  color: var(--text-3);
  text-align: center;
  background: var(--bg-soft);
  font-family: var(--font-sans, -apple-system, "Segoe UI", Roboto, sans-serif);
  font-size: 12.5px;
}

:root[data-theme="dark"] .text-diff-diff-view {
  background: #0d1117;
}

:root[data-theme="dark"] .td-ln-del {
  background: rgba(220, 38, 38, .18);
  color: #fca5a5;
}

:root[data-theme="dark"] .td-text-del {
  background: rgba(220, 38, 38, .12);
}

:root[data-theme="dark"] .td-ln-add {
  background: rgba(34, 197, 94, .16);
  color: #86efac;
}

:root[data-theme="dark"] .td-text-add {
  background: rgba(34, 197, 94, .10);
}

:root[data-theme="dark"] .td-text-empty {
  background: rgba(127, 127, 127, .06);
}

:root[data-theme="dark"] .text-diff-message {
  border-color: #7f1d1d;
  background: rgba(127, 29, 29, .18);
}

@media (max-width: 991px) {
  .result-toolbar {
    align-items: flex-start;
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .text-diff-tool .text-diff-panels {
    display: block;
  }

  .text-diff-tool .text-diff-panels > [class*="col-"] {
    display: block;
  }

  .text-diff-tool .text-diff-panels > [class*="col-"] + [class*="col-"] {
    margin-top: 16px;
  }

  .text-diff-panel-header {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    row-gap: 4px;
  }

  .text-diff-panel-status,
  .text-diff-result-status {
    text-align: left;
  }

  .text-diff-action-row,
  .text-diff-option-grid {
    display: grid;
  }

  .text-diff-action-row .btn,
  .text-diff-option-grid .text-diff-check {
    width: 100%;
    min-width: 0;
  }

  .text-diff-input-body,
  .text-diff-result-body {
    padding: 14px;
  }

  .text-diff-input-body .td-input {
    min-height: 220px;
  }

  .text-diff-diff-view {
    min-height: 220px;
  }
}