#he-tool{--radius:10px;--err:#ff5c6a}[data-theme=light] #he-tool{--err:#d92f3d}.he-topbar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;display:flex}.he-mode-tabs{background:var(--surface);border:1px solid var(--border);border-radius:10px;gap:6px;padding:4px;display:flex}.he-mode-tab{color:var(--txt-dim);cursor:pointer;background:0 0;border:none;border-radius:7px;padding:8px 18px;font-size:13px;font-weight:700;transition:background .2s,color .2s}.he-mode-tab.active{background:var(--accent);color:#fff}.he-mode-tab:hover:not(.active){color:var(--txt-strong)}.he-live-toggle{border:1px solid var(--border);background:var(--surface);color:var(--txt-dim);cursor:pointer;border-radius:999px;align-items:center;gap:8px;padding:8px 16px;font-size:13px;font-weight:700;transition:border-color .2s,color .2s;display:inline-flex}.he-live-dot{background:var(--txt-dim);border-radius:50%;width:9px;height:9px}.he-live-toggle[aria-pressed=true]{border-color:color-mix(in srgb, var(--ok) 45%, transparent);color:var(--ok)}.he-live-toggle[aria-pressed=true] .he-live-dot{background:var(--ok);box-shadow:0 0 6px var(--ok);animation:1.2s infinite he-pulse}@keyframes he-pulse{0%,to{opacity:1}50%{opacity:.4}}.he-options{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px;margin-bottom:18px;padding:18px 20px;display:grid}.he-opt{flex-direction:column;gap:4px;display:flex}.he-opt label{color:var(--txt-strong);font-size:12px;font-weight:700}.he-opt select{border:1px solid var(--border);background:var(--surface2);color:var(--txt);font-family:var(--sans);border-radius:7px;outline:none;padding:9px 12px;font-size:13px}.he-opt select:focus{border-color:var(--accent)}.he-check{color:var(--txt);cursor:pointer;align-items:center;gap:9px;font-size:13px;display:flex}.he-check input{accent-color:var(--accent);flex-shrink:0;width:15px;height:15px}.he-editor-layout{grid-template-columns:1fr auto 1fr;align-items:stretch;gap:12px;margin-bottom:14px;display:grid}.he-pane{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);flex-direction:column;display:flex;overflow:hidden}.he-pane-hd{border-bottom:1px solid var(--border);background:var(--surface2);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;padding:10px 14px;display:flex}.he-pane-title{letter-spacing:.5px;text-transform:uppercase;color:var(--txt-dim);font-size:12px;font-weight:700;font-family:var(--mono)}.he-pane-actions{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.he-search-input{border:1px solid var(--border);background:var(--surface);width:130px;color:var(--txt);border-radius:6px;outline:none;padding:5px 9px;font-size:12px}.he-search-input:focus{border-color:var(--accent)}.pane-btn{border:1px solid var(--border);color:var(--txt-dim);font-size:11px;font-weight:600;font-family:var(--sans);white-space:nowrap;cursor:pointer;background:0 0;border-radius:5px;padding:4px 10px;transition:background .2s,color .2s}.pane-btn:hover{background:var(--surface);color:var(--txt)}.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)}#he-input,#he-output{resize:vertical;min-height:240px;color:var(--txt);font-family:var(--mono);background:0 0;border:none;outline:none;flex:1;padding:16px;font-size:13px;line-height:1.7}#he-output{color:var(--txt-strong)}.he-pane-ft{border-top:1px solid var(--border);background:var(--surface2);font-family:var(--mono);color:var(--txt-dim);justify-content:space-between;padding:8px 14px;font-size:11px;display:flex}.he-swap-col{justify-content:center;align-items:center;display:flex}.he-swap-btn{border:1px solid var(--border);background:var(--surface);width:42px;height:42px;color:var(--accent);cursor:pointer;border-radius:50%;font-size:18px;transition:background .2s,transform .2s}.he-swap-btn:hover{background:var(--surface2);transform:rotate(180deg)}.he-actions-row{flex-wrap:wrap;align-items:center;gap:16px;margin-bottom:40px;display:flex}.he-status{font-family:var(--mono);color:var(--txt-dim);font-size:12px}.he-status.ok{color:var(--ok)}.he-status.err{color:var(--err)}.he-sub-title{color:var(--txt-strong);letter-spacing:-.4px;margin-bottom:6px;font-size:19px;font-weight:800}.he-sub-desc{color:var(--txt-dim);max-width:720px;margin-bottom:18px;font-size:13px;line-height:1.6}.he-sub-desc a{color:var(--accent)}.he-hint{color:var(--txt-dim);margin-top:10px;font-size:12px}.he-file-section{border-top:1px solid var(--border);margin-bottom:48px;padding-top:32px}.he-file-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:8px}#drop-zone.dragover{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb, var(--accent) 15%, transparent)}.he-drop-inner{border:1.5px dashed var(--border);text-align:center;border-radius:8px;flex-direction:column;justify-content:center;align-items:center;gap:8px;padding:32px 12px;display:flex}.he-drop-icon{color:var(--accent);font-size:26px}.he-drop-inner p{color:var(--txt-dim);font-size:13px}.he-file-pick{cursor:pointer;margin-top:4px;padding:8px 18px;font-size:13px;display:inline-block}.he-file-list{margin-top:16px}.he-file-row{background:var(--surface);border:1px solid var(--border);border-radius:9px;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:8px;padding:10px 14px;display:flex}.he-file-name{min-width:160px;font-family:var(--mono);color:var(--txt-strong);white-space:nowrap;text-overflow:ellipsis;flex:1;font-size:12.5px;overflow:hidden}.he-file-meta{color:var(--txt-dim);font-size:11px;font-family:var(--mono);white-space:nowrap}.he-file-actions-row{flex-wrap:wrap;align-items:center;gap:10px;margin-top:8px;display:flex}.he-filename-input{border:1px solid var(--border);background:var(--surface2);min-width:200px;color:var(--txt);font-family:var(--sans);border-radius:7px;outline:none;flex:1;padding:9px 12px;font-size:13px}.he-filename-input:focus{border-color:var(--accent)}.he-lookup-section{border-top:1px solid var(--border);margin-bottom:48px;padding-top:32px}.he-lookup-search{max-width:100%;margin-bottom:16px}.he-table-wrap{border:1px solid var(--border);border-radius:10px;max-height:480px;overflow:auto}table.he-lookup-table{border-collapse:collapse;width:100%;font-family:var(--mono);white-space:nowrap;font-size:12.5px}table.he-lookup-table thead th{background:var(--surface2);color:var(--txt-dim);text-transform:uppercase;letter-spacing:.4px;text-align:left;border-bottom:1px solid var(--border);padding:10px 14px;font-size:10.5px;font-weight:700;position:sticky;top:0}table.he-lookup-table tbody td{text-align:left;color:var(--txt);border-bottom:1px solid var(--border);padding:8px 14px}table.he-lookup-table tbody tr{cursor:pointer;transition:background .15s}table.he-lookup-table tbody tr:hover{background:var(--surface2)}.he-ent-name{color:var(--accent);font-weight:700}.he-ent-desc{font-family:var(--sans);white-space:normal;min-width:200px}.he-history-section{border-top:1px solid var(--border);padding-top:32px}.he-history-hd{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin-bottom:6px;display:flex}.he-history-hd .he-sub-title{margin-bottom:0}.he-history-list{flex-direction:column;gap:8px;max-height:420px;display:flex;overflow-y:auto}.he-history-empty{text-align:center;color:var(--txt-dim);background:var(--surface);border:1px dashed var(--border);border-radius:var(--radius);padding:24px;font-size:13px}.he-history-item{background:var(--surface);border:1px solid var(--border);cursor:pointer;border-radius:9px;align-items:center;gap:12px;padding:10px 14px;transition:border-color .2s,background .2s;display:flex}.he-history-item:hover{border-color:var(--accent);background:var(--surface2)}.he-history-badge{text-transform:uppercase;letter-spacing:.5px;border-radius:999px;flex-shrink:0;padding:3px 8px;font-size:10px;font-weight:800}.he-history-badge.encode{color:var(--ok);background:color-mix(in srgb, var(--ok) 14%, transparent);border:1px solid color-mix(in srgb, var(--ok) 30%, transparent)}.he-history-badge.decode{color:var(--accent);background:color-mix(in srgb, var(--accent) 14%, transparent);border:1px solid color-mix(in srgb, var(--accent) 30%, transparent)}.he-history-snippet{min-width:0;font-family:var(--mono);color:var(--txt);white-space:nowrap;text-overflow:ellipsis;flex:1;font-size:12px;overflow:hidden}.he-history-time{color:var(--txt-dim);font-size:11px;font-family:var(--mono);flex-shrink:0}.he-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}.he-history-del:hover{color:var(--err);border-color:color-mix(in srgb, var(--err) 40%, transparent);background:color-mix(in srgb, var(--err) 8%, transparent)}.b64-howto{counter-reset:he-step;flex-direction:column;gap:14px;max-width:720px;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:he-step;content:counter(he-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)}.he-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)}.he-toast.show{opacity:1;transform:translate(-50%)translateY(0)}@media (width<=900px){.he-editor-layout{grid-template-columns:1fr}.he-swap-col{padding:4px 0;transform:rotate(90deg)}}@media (width<=650px){.he-topbar{flex-direction:column;align-items:stretch}.he-options{grid-template-columns:1fr}#he-input,#he-output{min-height:180px}.he-search-input{width:100%}}