:root{--bg: #0f1218;--panel: #181c25;--panel-2: #1f2530;--sidebar: #11151c;--border: #2a3140;--text: #e6e8ee;--muted: #8a93a6;--accent: #5aa9ff;--accent-2: #3a86e0;--danger: #ff6b6b;--ok: #6ee7a0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color-scheme:dark}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);min-height:100vh}.app-shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{background:var(--sidebar);border-right:1px solid var(--border);padding:1.2rem .9rem;position:sticky;top:0;align-self:start;height:100vh;overflow-y:auto}.brand{margin:.2rem .4rem 1.2rem}.brand-title{font-size:1.05rem;font-weight:700;letter-spacing:.2px}.brand-sub{color:var(--muted);font-size:.78rem;margin-top:2px}.cat{margin-bottom:1rem}.cat-label{color:var(--muted);font-size:.7rem;text-transform:uppercase;letter-spacing:1px;padding:0 .4rem;margin-bottom:.4rem}.cat ul{list-style:none;padding:0;margin:0}.cat li{margin:1px 0}.nav-item{width:100%;text-align:left;background:transparent;border:none;color:var(--text);font:inherit;font-size:.92rem;padding:.55rem .7rem;border-radius:6px;cursor:pointer}.nav-item:hover{background:#ffffff0a}.nav-item.active{background:#5aa9ff21;color:var(--accent);font-weight:500}.main{padding:1.8rem 1.5rem 4rem;max-width:980px;width:100%}@media (max-width: 760px){.app-shell{grid-template-columns:1fr}.sidebar{position:static;height:auto;border-right:none;border-bottom:1px solid var(--border)}.main{padding:1.2rem 1rem 3rem}}.card{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:1.25rem;margin-bottom:1rem}.util-title{margin:0 0 .25rem;font-size:1.2rem;font-weight:600}.util-sub{color:var(--muted);margin:0 0 1rem;font-size:.9rem}.drop{border:1.5px dashed var(--border);border-radius:10px;padding:1.5rem;text-align:center;cursor:pointer;transition:border-color .12s,background .12s}.drop.drag{border-color:var(--accent);background:#5aa9ff0f}.drop.has{border-style:solid}.drop .name{color:var(--text);font-weight:500}.drop .meta{color:var(--muted);font-size:.85rem;margin-top:4px}.file-list{list-style:none;padding:0;margin:.6rem 0 0;border:1px solid var(--border);border-radius:8px;background:var(--panel-2);overflow:hidden}.file-list li{display:flex;align-items:center;gap:.5rem;padding:.45rem .7rem;border-bottom:1px solid var(--border);font-size:.9rem}.file-list li:last-child{border-bottom:none}.file-list .idx{color:var(--muted);min-width:1.5rem}.file-list .fn{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-list .sz{color:var(--muted);font-size:.8rem;min-width:4rem;text-align:right}button.link{background:transparent;border:1px solid var(--border);color:var(--text);border-radius:5px;padding:.15rem .45rem;font:inherit;font-size:.85rem;cursor:pointer}button.link:hover:not(:disabled){background:#ffffff0a}button.link:disabled{opacity:.4;cursor:not-allowed}button.link.danger{color:var(--danger);border-color:var(--danger)}details{background:var(--panel-2);border:1px solid var(--border);border-radius:8px;padding:.6rem .9rem;margin-top:.6rem}details>summary{cursor:pointer;font-weight:500;padding:.2rem 0;list-style:none}details>summary::-webkit-details-marker{display:none}details[open]>summary{margin-bottom:.6rem}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem 1rem}@media (max-width: 640px){.grid{grid-template-columns:1fr}}label.field{display:flex;flex-direction:column;font-size:.85rem;color:var(--muted);gap:4px}label.field input[type=text],label.field input[type=number],label.field input[type=password],label.field select{background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:6px;padding:.45rem .6rem;font:inherit}label.field input[type=range]{accent-color:var(--accent)}label.field strong{color:var(--text);font-weight:600}label.check{display:flex;align-items:center;gap:.5rem;color:var(--text);font-size:.9rem;-webkit-user-select:none;user-select:none}button.primary{background:var(--accent-2);color:#fff;border:none;border-radius:8px;padding:.7rem 1.1rem;font:inherit;font-weight:600;cursor:pointer}button.primary:disabled{opacity:.55;cursor:not-allowed}button.primary:hover:not(:disabled){background:var(--accent)}.row{display:flex;gap:.75rem;align-items:center;justify-content:space-between;margin-top:1rem}.status{font-size:.9rem;color:var(--muted)}.status.err{color:var(--danger)}.status.ok{color:var(--ok)}.spinner{width:14px;height:14px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;display:inline-block;animation:spin .7s linear infinite;vertical-align:-2px;margin-right:6px}@keyframes spin{to{transform:rotate(360deg)}}code{background:var(--bg);border:1px solid var(--border);border-radius:4px;padding:1px 5px;font-size:.85em}