:root{--bg: #0f1115;--bg-elevated: #161923;--bg-inset: #0c0e13;--border: #262b38;--text: #e8eaf0;--text-muted: #9aa1b2;--accent: #7c9eff;--accent-soft: rgba(124, 158, 255, .15);--danger: #ff8080;--success: #7fd99a;--radius: 10px;--sidebar-width: 280px}*{box-sizing:border-box}html,body{height:100%}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}#app{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-width);flex-shrink:0;border-right:1px solid var(--border);display:flex;flex-direction:column;height:100vh;position:sticky;top:0}.sidebar-header{padding:1.25rem 1.25rem 1rem;border-bottom:1px solid var(--border)}.sidebar-header h1{margin:0 0 .15rem;font-size:1.15rem}.brand-link{background:none;border:none;padding:0;margin:0;font:inherit;font-size:1.15rem;font-weight:700;color:var(--text);cursor:pointer}.brand-link:hover{color:var(--accent)}.sidebar-header p{margin:0;color:var(--text-muted);font-size:.78rem}.sidebar-search{padding:.85rem 1rem;border-bottom:1px solid var(--border)}.sidebar-search input{width:100%;padding:.55rem .75rem;background:var(--bg-inset);border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:.88rem}.sidebar-search input:focus{outline:none;border-color:var(--accent)}.sidebar-nav{flex:1;overflow-y:auto;padding:.5rem 0 1.5rem}.sidebar-category{margin:.9rem 0 .3rem;padding:0 1.1rem;font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;color:var(--text-muted)}.sidebar-link{display:block;width:100%;text-align:left;background:none;border:none;color:var(--text-muted);padding:.5rem 1.1rem;font-size:.88rem;cursor:pointer;border-left:2px solid transparent}.sidebar-link:hover{color:var(--text);background:var(--bg-elevated)}.sidebar-link.active{color:var(--accent);background:var(--accent-soft);border-left-color:var(--accent)}.sidebar-empty{padding:1rem 1.1rem;color:var(--text-muted);font-size:.85rem}.content{flex:1;min-width:0;padding:2.25rem 2.5rem 4rem;max-width:980px}.tool-header{margin-bottom:1.5rem}.tool-header h2{margin:0 0 .35rem;font-size:1.5rem}.tool-header p{margin:0;color:var(--text-muted)}.tool-badge{display:inline-block;font-size:.7rem;color:var(--text-muted);border:1px solid var(--border);border-radius:6px;padding:.15rem .45rem;margin-bottom:.5rem}.home-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:1rem;margin-top:1.5rem}.home-card{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius);padding:1rem;cursor:pointer;text-align:left;color:var(--text);font:inherit}.home-card:hover{border-color:var(--accent)}.home-card h3{margin:0 0 .4rem;font-size:1rem;color:var(--text)}.home-card p{margin:0;font-size:.85rem;color:var(--text-muted)}.field{margin-bottom:1.1rem}.field label{display:block;font-size:.82rem;color:var(--text-muted);margin-bottom:.35rem}textarea,input[type=text],input[type=number],input[type=password],select{width:100%;padding:.65rem .8rem;background:var(--bg-inset);border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:.9rem;font-family:inherit}textarea{font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace;resize:vertical;min-height:140px}textarea:focus,input:focus,select:focus{outline:none;border-color:var(--accent)}.row{display:flex;gap:.75rem;flex-wrap:wrap}.row>*{flex:1;min-width:160px}button.btn{background:var(--accent);color:#0f1115;border:none;border-radius:8px;padding:.6rem 1.1rem;font-size:.88rem;font-weight:600;cursor:pointer}button.btn:hover{filter:brightness(1.08)}button.btn.secondary{background:var(--bg-elevated);color:var(--text);border:1px solid var(--border)}button.btn.danger{background:var(--danger);color:#2a0d0d}button.btn:disabled{opacity:.5;cursor:not-allowed}.btn-row{display:flex;gap:.6rem;flex-wrap:wrap;margin:.75rem 0}.dropzone{border:1.5px dashed var(--border);border-radius:var(--radius);padding:1.75rem 1rem;text-align:center;color:var(--text-muted);cursor:pointer;font-size:.88rem}.dropzone.dragover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.file-list{margin:.75rem 0;padding:0;list-style:none}.file-list li{display:flex;justify-content:space-between;align-items:center;gap:.5rem;padding:.45rem .7rem;background:var(--bg-elevated);border:1px solid var(--border);border-radius:8px;margin-bottom:.4rem;font-size:.85rem}.file-list li .file-remove{background:none;border:none;color:var(--danger);cursor:pointer;font-size:1rem}.result-box{background:var(--bg-inset);border:1px solid var(--border);border-radius:var(--radius);padding:1rem;margin-top:1rem;white-space:pre-wrap;word-break:break-all;font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace;font-size:.85rem}.status{font-size:.85rem;margin:.5rem 0}.status.error{color:var(--danger)}.status.success{color:var(--success)}.hint{color:var(--text-muted);font-size:.78rem;margin-top:.4rem}.grid-cols-2{display:grid;grid-template-columns:1fr 1fr;gap:1rem}@media (max-width: 900px){.grid-cols-2{grid-template-columns:1fr}}table.kv-table{width:100%;border-collapse:collapse;font-size:.85rem}table.kv-table th,table.kv-table td{text-align:left;padding:.4rem .6rem;border-bottom:1px solid var(--border)}table.kv-table th{color:var(--text-muted);font-weight:500}.copy-btn{background:var(--bg-elevated);border:1px solid var(--border);color:var(--text-muted);border-radius:6px;padding:.2rem 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720px){#app{flex-direction:column}.sidebar{width:100%;height:auto;position:static}.sidebar-nav{max-height:260px}.content{padding:1.5rem 1.25rem 3rem}}