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var(--border);background:var(--input-bg);color:var(--text);font-family:var(--font-mono);font-size:.9rem;line-height:1.6}.diff-field textarea:focus-visible{outline:none;border-color:var(--gold);box-shadow:0 0 0 4px var(--accent-glow)}.diff-upload-row{display:grid;grid-template-columns:1fr 1fr;gap:1.25rem}.diff-dropzone{display:grid;gap:.4rem;justify-items:center;text-align:center;padding:1.8rem 1rem;border:2px dashed var(--border-strong);border-radius:var(--radius-md);background:var(--input-bg);cursor:pointer;transition:all .25s var(--ease-out-expo)}.diff-dropzone:hover,.diff-dropzone.is-dragover,.diff-dropzone:focus-visible{border-color:var(--gold);background:var(--surface-elevated);outline:none}.diff-dropzone 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1.5rem;border:none;border-radius:var(--radius-md);background:linear-gradient(135deg,var(--gold) 0%,var(--gold-dim) 100%);color:#0c0a05;font-weight:600;font-size:.92rem;cursor:pointer;transition:all .2s var(--ease-out-expo)}.diff-btn:hover{transform:translateY(-1px);box-shadow:0 6px 16px #c9a84c59}.diff-status{font-size:.85rem}.diff-result{display:grid;gap:1rem;border-top:1px dashed var(--border);padding-top:1.5rem}.diff-result-head{display:flex;flex-wrap:wrap;gap:1rem;align-items:center;justify-content:space-between}.diff-result-actions{display:flex;gap:.6rem}.diff-result-actions .button-secondary{padding:.45rem .9rem;font-size:.82rem;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface-elevated);color:var(--text-soft);cursor:pointer}.diff-result-actions .button-secondary:hover{color:var(--text);border-color:var(--gold-dim)}.diff-summary{display:flex;flex-wrap:wrap;gap:.9rem;align-items:center}.diff-summary .sum{font-size:.85rem;color:var(--text-soft)}.diff-summary .sum strong{font-family:var(--font-mono);font-size:.95rem}.diff-summary .sum-chg strong{color:var(--gold)}.diff-summary .sum-add strong{color:var(--success, #3fa66a)}.diff-summary .sum-del strong{color:var(--danger, #d05050)}.diff-summary .sum-meta{color:var(--text-faint);font-family:var(--font-mono);font-size:.8rem}.diff-sheets{display:flex;flex-wrap:wrap;gap:.5rem}.diff-sheet-tab{padding:.3rem .8rem;font-size:.8rem;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface-elevated);color:var(--text-soft);cursor:pointer}.diff-sheet-tab.is-active{background:var(--gold);color:#0c0a05;border-color:var(--gold)}.diff-split{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--border);border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden}.diff-pane{background:var(--surface);display:flex;flex-direction:column;min-width:0}.diff-pane-title{padding:.5rem .8rem;font-size:.78rem;color:var(--text-faint);border-bottom:1px solid var(--border);font-family:var(--font-mono);position:sticky;top:0;background:var(--surface-elevated);z-index:1;word-break:break-all}.diff-lines{overflow:auto;max-height:34rem;font-family:var(--font-mono);font-size:.84rem}.diff-row{display:flex;align-items:stretch;min-height:1.6rem;line-height:1.5}.diff-no{flex:none;width:2.6rem;text-align:right;padding:.2rem .6rem .2rem 0;color:var(--text-faint);user-select:none;border-right:1px solid var(--border);background:#7d7d7d0a}.diff-mark{flex:none;width:1.1rem;text-align:center;font-weight:700;user-select:none}.diff-text{flex:1 1 auto;padding:.2rem .6rem;white-space:pre-wrap;word-break:break-word}.diff-row.is-removed{background:var(--danger-bg, rgba(208,80,80,.12))}.diff-row.is-removed .diff-mark{color:var(--danger, #d05050)}.diff-row.is-added{background:var(--success-bg, rgba(63,166,106,.12))}.diff-row.is-added .diff-mark{color:var(--success, #3fa66a)}.diff-row.is-changed{background:#c9a84c1f}.diff-row.is-changed .diff-mark{color:var(--gold)}.diff-row.is-spacer{background:repeating-linear-gradient(45deg,transparent,transparent 6px,rgba(125,125,125,.05) 6px,rgba(125,125,125,.05) 12px)}.diff-table-wrap{overflow:auto;max-height:34rem;border:1px solid var(--border);border-radius:var(--radius-sm)}.diff-table{border-collapse:collapse;width:100%;font-family:var(--font-mono);font-size:.82rem}.diff-table th,.diff-table td{border:1px solid var(--border);padding:.4rem .6rem;text-align:left;vertical-align:top;max-width:18rem}.diff-table thead th{position:sticky;top:0;background:var(--surface-elevated);color:var(--text-soft);font-weight:600;z-index:1}.diff-rowtag{white-space:nowrap;color:var(--text-faint);background:var(--surface-elevated);text-align:center}.diff-table .cell-add{background:var(--success-bg, rgba(63,166,106,.14));color:var(--success, #3fa66a)}.diff-table .cell-del{background:var(--danger-bg, rgba(208,80,80,.14));color:var(--danger, #d05050)}.diff-table .cell-chg{background:#c9a84c24}.cell-old{color:var(--danger, #d05050);text-decoration:line-through}.cell-arrow{margin:0 .3rem;color:var(--text-faint)}.cell-new{color:var(--gold);font-weight:600}.tag{display:inline-block;padding:.05rem .45rem;border-radius:4px;font-size:.72rem;font-weight:600}.tag-add{background:var(--success-bg, rgba(63,166,106,.18));color:var(--success, #3fa66a)}.tag-del{background:var(--danger-bg, rgba(208,80,80,.18));color:var(--danger, #d05050)}.tag-chg{background:#c9a84c33;color:var(--gold)}.diff-allsame{text-align:center;color:var(--text-faint);padding:1.5rem}.diff-empty{padding:2.5rem 1rem;text-align:center;color:var(--text-faint)}.diff-error{color:var(--danger, #d05050)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(max-width:820px){.diff-tool{padding:1.2rem}.diff-input-grid,.diff-upload-row,.diff-split{grid-template-columns:1fr}.diff-split{gap:1rem;background:transparent;border:none}.diff-pane{border:1px solid var(--border);border-radius:var(--radius-sm)}}