#diff-tool{--radius:10px;--err:#ff5c6a;--add-clr:#22c55e;--del-clr:#ff5c6a;--chg-clr:#ffb347}[data-theme=light] #diff-tool{--err:#d92f3d}.dc-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:20px;padding:24px}.dc-panel-hd{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin-bottom:8px;display:flex}.dc-panel-actions{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.dc-panel-title{color:var(--txt-strong);margin-bottom:6px;font-size:17px;font-weight:800}.dc-panel-sub{color:var(--txt-dim);margin-bottom:14px;font-size:13px;line-height:1.6}.dc-hint{color:var(--txt-dim);margin-left:8px;font-size:11px}.dc-type-tabs{background:var(--surface2);border:1px solid var(--border);border-radius:10px;gap:6px;width:fit-content;margin-bottom:14px;padding:4px;display:flex}.dc-type-tab{cursor:pointer;color:var(--txt-dim);background:0 0;border:none;border-radius:7px;padding:9px 18px;font-size:13px;font-weight:700;transition:background .2s,color .2s}.dc-type-tab.active{background:var(--accent);color:#fff}.dc-lang-wrap{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.dc-lang-wrap label{color:var(--txt-strong);font-size:12px;font-weight:700}.dc-lang-wrap select{border:1px solid var(--border);background:var(--surface2);color:var(--txt-strong);font-family:var(--sans);border-radius:7px;padding:9px 12px;font-size:13px}.dc-opts-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-bottom:14px;display:grid}.dc-field label{color:var(--txt-dim);text-transform:uppercase;letter-spacing:.4px;margin-bottom:6px;font-size:12px;font-weight:700;display:block}.dc-field select{background:var(--surface2);border:1px solid var(--border);width:100%;color:var(--txt-strong);font-family:var(--sans);border-radius:8px;padding:10px 12px;font-size:13px}.dc-check-row{flex-wrap:wrap;gap:16px;display:flex}.dc-check{color:var(--txt);cursor:pointer;align-items:center;gap:8px;font-size:13px;display:flex}.dc-check input{width:16px;height:16px;accent-color:var(--accent);cursor:pointer}.dc-input-layout{grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px;display:grid}.dc-input-pane{background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius);flex-direction:column;transition:border-color .2s;display:flex;overflow:hidden}.dc-input-pane.dragover{border-color:var(--accent);box-shadow:0 0 0 2px color-mix(in srgb, var(--accent) 25%, transparent)}.dc-input-hd{border-bottom:1px solid var(--border);background:var(--surface);color:var(--txt-dim);text-transform:uppercase;letter-spacing:.5px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;padding:10px 14px;font-size:12px;font-weight:700;display:flex}.dc-input-actions{gap:6px;display:flex}#dc-input-a,#dc-input-b{resize:vertical;min-height:220px;color:var(--txt);font-family:var(--mono);background:0 0;border:none;outline:none;flex:1;padding:14px;font-size:13px;line-height:1.6}.dc-input-ft{border-top:1px solid var(--border);background:var(--surface);font-family:var(--mono);color:var(--txt-dim);padding:7px 14px;font-size:11px}.dc-actions{flex-wrap:wrap;gap:12px;display:flex}.dc-stats-bar{grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px;margin-bottom:20px;display:grid}.dc-stat-card{background:var(--surface);border:1px solid var(--border);text-align:center;border-radius:10px;padding:14px}.dc-stat-num{font-size:20px;font-weight:900;font-family:var(--mono)}.dc-stat-num.add{color:var(--add-clr)}.dc-stat-num.del{color:var(--del-clr)}.dc-stat-num.chg{color:var(--chg-clr)}.dc-stat-label{color:var(--txt-dim);text-transform:uppercase;letter-spacing:.5px;margin-top:4px;font-size:10px;font-weight:700}.dc-search-input{border:1px solid var(--border);background:var(--surface2);color:var(--txt);border-radius:7px;width:160px;padding:7px 12px;font-size:12px}.dc-download-wrap{gap:6px;display:flex}.dc-download-wrap select{border:1px solid var(--border);background:var(--surface2);color:var(--txt);border-radius:7px;padding:7px 10px;font-size:12px}.pane-btn{border:1px solid var(--border);background:var(--surface2);color:var(--txt);cursor:pointer;border-radius:7px;padding:7px 14px;font-size:12px;font-weight:700;transition:background .2s,color .2s,border-color .2s}.pane-btn:hover{background:var(--surface);color:var(--txt-strong);border-color:var(--accent)}.pane-btn.danger{color:var(--err);border-color:color-mix(in srgb, var(--err) 30%, transparent)}.pane-btn.danger:hover{background:color-mix(in srgb, var(--err) 10%, transparent);border-color:var(--err)}#dc-output{border:1px solid var(--border);font-family:var(--mono);border-radius:10px;font-size:12.5px;overflow:hidden}.dc-side-view{grid-template-columns:1fr 1fr;display:grid}.dc-side-col{max-height:640px;overflow:auto}.dc-side-col+.dc-side-col{border-left:1px solid var(--border)}.dc-row{display:flex}.dc-ln{text-align:right;width:42px;color:var(--txt-dim);background:var(--surface2);border-right:1px solid var(--border);-webkit-user-select:none;user-select:none;flex-shrink:0;padding:2px 8px}.dc-code{white-space:pre-wrap;word-break:break-word;flex:1;padding:2px 10px}.dc-row.equal .dc-code{color:var(--txt)}.dc-row.add{background:color-mix(in srgb, var(--add-clr) 12%, transparent)}.dc-row.add .dc-ln{background:color-mix(in srgb, var(--add-clr) 16%, var(--surface2))}.dc-row.del{background:color-mix(in srgb, var(--del-clr) 12%, transparent)}.dc-row.del .dc-ln{background:color-mix(in srgb, var(--del-clr) 16%, var(--surface2))}.dc-row.empty .dc-code{opacity:.3}.dc-row.collapsed-note{color:var(--txt-dim);cursor:pointer;justify-content:center;padding:4px;font-style:italic}mark.dc-hl{background:color-mix(in srgb, var(--chg-clr) 55%, transparent);border-radius:2px;padding:0 1px}mark.dc-search-hit{background:var(--accent);color:#fff;border-radius:2px}.dc-inline-view,.dc-unified-view{max-height:640px;overflow:auto}.dc-unified-view .dc-row.add .dc-code:before{content:"+ ";color:var(--add-clr)}.dc-unified-view .dc-row.del .dc-code:before{content:"- ";color:var(--del-clr)}.dc-unified-view .dc-row.equal .dc-code:before{content:" "}.dc-unified-view .dc-ln{display:none}.dc-history-list{flex-direction:column;gap:8px;max-height:420px;display:flex;overflow-y:auto}.dc-history-empty{text-align:center;color:var(--txt-dim);background:var(--surface2);border:1px dashed var(--border);border-radius:var(--radius);padding:24px;font-size:13px}.dc-history-item{background:var(--surface2);border:1px solid var(--border);cursor:pointer;border-radius:9px;align-items:center;gap:12px;padding:10px 14px;transition:border-color .2s;display:flex}.dc-history-item:hover{border-color:var(--accent)}.dc-history-badge{text-transform:uppercase;letter-spacing:.5px;color:var(--accent);background:color-mix(in srgb, var(--accent) 14%, transparent);border-radius:999px;flex-shrink:0;padding:3px 8px;font-size:10px;font-weight:800}.dc-history-text{min-width:0;font-family:var(--mono);color:var(--txt);white-space:nowrap;text-overflow:ellipsis;flex:1;font-size:12px;overflow:hidden}.dc-history-time{color:var(--txt-dim);font-size:11px;font-family:var(--mono);flex-shrink:0}.dc-history-del{border:1px solid var(--border);width:24px;height:24px;color:var(--txt-dim);cursor:pointer;background:0 0;border-radius:6px;flex-shrink:0;font-size:12px}.dc-history-del:hover{color:var(--err);border-color:var(--err)}.dc-save-history-btn{margin-top:12px}.b64-howto{counter-reset:dc-step;flex-direction:column;gap:14px;max-width:780px;list-style:none;display:flex}.b64-howto li{color:var(--txt);padding-left:40px;font-size:14px;line-height:1.65;position:relative}.b64-howto li:before{counter-increment:dc-step;content:counter(dc-step);background:linear-gradient(135deg, var(--grad1), var(--grad2));color:#fff;border-radius:8px;justify-content:center;align-items:center;width:28px;height:28px;font-size:13px;font-weight:800;display:flex;position:absolute;top:0;left:0}.b64-howto strong{color:var(--txt-strong)}.dc-toast{background:var(--surface2);border:1px solid var(--border);color:var(--txt-strong);font-family:var(--mono);z-index:2000;opacity:0;pointer-events:none;border-radius:999px;padding:10px 20px;font-size:13px;font-weight:600;transition:opacity .25s,transform .25s;position:fixed;bottom:28px;left:50%;transform:translate(-50%)translateY(20px)}.dc-toast.show{opacity:1;transform:translate(-50%)translateY(0)}@media (width<=900px){.dc-input-layout,.dc-side-view{grid-template-columns:1fr}.dc-side-col+.dc-side-col{border-left:none;border-top:1px solid var(--border)}}@media (width<=650px){.dc-panel{padding:18px}.dc-actions{flex-direction:column}.dc-actions button,.dc-search-input{width:100%}}