/* 局域网互传 —— 页面样式 */
*{box-sizing:border-box}
[hidden]{display:none!important}
:root{--bg:#f4f6fb;--card:#fff;--text:#1b2230;--sub:#6b7488;--line:#e2e6ef;--accent:#3b6df0;--accent-weak:#e8eefe;--ok:#1fa463;--warn:#d98a00;--err:#d64545}
@media(prefers-color-scheme:dark){:root{--bg:#10131a;--card:#181c26;--text:#e8ecf5;--sub:#8a93a8;--line:#272d3b;--accent:#6b93ff;--accent-weak:#1f2a4a;--ok:#3ccf86;--warn:#f0b03a;--err:#ff6b6b}}
html,body{margin:0}
body{font:15px/1.5 -apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text)}
.wrap{max-width:760px;margin:0 auto;padding:max(20px,env(safe-area-inset-top)) 16px 48px}
header{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
h1{font-size:20px;margin:0}
.me{font:inherit;font-size:13px;color:var(--sub);cursor:pointer;border:1px dashed var(--line);border-radius:999px;padding:4px 12px;background:none}
.tip{color:var(--sub);font-size:13px;margin:8px 0 0}
h2{font-size:13px;color:var(--sub);font-weight:600;letter-spacing:.04em;margin:26px 0 10px}
.sec-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:26px 0 10px}
.sec-head h2{margin:0}
.btn.small{font-size:12px;padding:5px 10px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px;display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center;transition:.15s}
.card.drop{border-color:var(--accent);background:var(--accent-weak)}
.avatar{width:64px;height:64px;border-radius:50%;background:var(--accent-weak);display:grid;place-items:center;font-size:30px;user-select:none}
.card.open .avatar{cursor:pointer}
.card .nm{font-weight:600;word-break:break-all}
.st{font-size:12px;color:var(--sub)}
.st.ok{color:var(--ok)}.st.warn{color:var(--warn)}.st.err{color:var(--err)}
.btns{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;margin-top:6px}
.btn{font:inherit;font-size:13px;padding:6px 12px;border-radius:10px;border:1px solid var(--line);background:var(--card);color:var(--text);cursor:pointer}
.btn:hover{border-color:var(--accent)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn:disabled{opacity:.5;cursor:default}
.add{border-style:dashed;justify-content:center;cursor:pointer;color:var(--sub);min-height:150px;background:transparent}
.add .plus{font-size:34px;line-height:1}
.add:hover{border-color:var(--accent);color:var(--accent)}
.card.near{border-style:dashed;border-color:var(--ok)}
.card.near .st{color:var(--ok)}
.logs{display:flex;flex-direction:column;gap:8px}
.empty{color:var(--sub);font-size:13px;padding:14px 0}
.log{display:flex;align-items:center;gap:12px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:10px 12px}
.log .dir{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;background:var(--accent-weak);color:var(--accent);flex:none;font-size:14px}
.log.in .dir{background:#e3f6ec;color:var(--ok)}
.thumb{width:44px;height:44px;border-radius:8px;object-fit:cover;flex:none}
.info{flex:1;min-width:0}
.info .nm{font-size:14px;word-break:break-all}
.info .nm.txt{white-space:pre-wrap;max-height:120px;overflow:auto}
.meta{font-size:12px;color:var(--sub)}
.bar{height:4px;background:var(--line);border-radius:4px;margin-top:6px;overflow:hidden}
.bar i{display:block;height:100%;width:0;background:var(--accent);transition:width .1s}
.act{flex:none}
.act a.btn{text-decoration:none;display:inline-block}
.mask{position:fixed;inset:0;background:rgba(0,0,0,.45);display:flex;align-items:flex-end;justify-content:center;z-index:10}
#askMask{z-index:15}
.sheet{background:var(--card);width:100%;max-width:520px;border-radius:18px 18px 0 0;padding:16px;max-height:92vh;overflow:auto}
@media(min-width:600px){.mask{align-items:center}.sheet{border-radius:18px}}
.sheet-h{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.x{font:inherit;border:0;background:none;color:var(--sub);font-size:18px;cursor:pointer}
.tabs{display:flex;gap:6px;margin-bottom:12px}
.tabs button{flex:1;font:inherit;padding:8px;border-radius:10px;border:1px solid var(--line);background:none;color:var(--text);cursor:pointer}
.tabs button.on{background:var(--accent-weak);border-color:var(--accent);color:var(--accent)}
.hint{font-size:13px;color:var(--sub);margin:10px 0 6px}
textarea{width:100%;font:12px/1.4 ui-monospace,Consolas,monospace;padding:8px;border-radius:10px;border:1px solid var(--line);background:var(--bg);color:var(--text);resize:vertical;word-break:break-all}
.row{display:flex;gap:8px;margin-top:8px;flex-wrap:wrap}
.ask-actions .btn{flex:1}
.msg{font-size:13px;color:var(--warn);min-height:1.2em;margin:10px 0 0}
details{margin-top:10px;font-size:13px;color:var(--sub)}
details summary{cursor:pointer}
details ol{padding-left:20px;margin:6px 0}
.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);background:#222;color:#fff;padding:8px 16px;border-radius:999px;font-size:13px;z-index:20;opacity:0;pointer-events:none;transition:opacity .2s;max-width:90vw}
.toast.show{opacity:.95}

/* 二维码显示 / 扫描 */
#qrMask{z-index:20}
#scanMask{z-index:25}
.qr-wrap{background:#fff;border-radius:14px;padding:14px;display:grid;place-items:center}
#qrCanvas{width:100%;max-width:380px;height:auto;display:block;image-rendering:pixelated}
.scan-wrap{position:relative;background:#000;border-radius:12px;overflow:hidden;aspect-ratio:1/1}
.scan-wrap video{width:100%;height:100%;object-fit:cover;display:block}
.scan-wrap::after{content:"";position:absolute;inset:12%;border:2px solid rgba(255,255,255,.85);border-radius:12px;pointer-events:none}

/* 发现服务状态条 */
.discbar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:12px;color:var(--sub);margin:10px 0 0}
.dot{width:8px;height:8px;border-radius:50%;background:var(--sub);flex:none}
.dot.connecting{background:var(--warn);animation:discpulse 1.2s ease-in-out infinite}
.dot.online{background:var(--ok)}
.dot.offline{background:var(--err)}
.dot.off{background:var(--sub)}
@keyframes discpulse{50%{opacity:.3}}
.linkbtn{font:inherit;font-size:12px;border:0;background:none;color:var(--accent);cursor:pointer;padding:0;text-decoration:underline;text-underline-offset:2px}
.switch{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--sub);cursor:pointer;user-select:none;margin-left:auto}
.switch input{position:absolute;opacity:0;width:0;height:0}
.switch .track{width:32px;height:18px;border-radius:999px;background:var(--line);position:relative;transition:background .15s;flex:none}
.switch .track::after{content:"";position:absolute;top:2px;left:2px;width:14px;height:14px;border-radius:50%;background:#fff;box-shadow:0 1px 2px rgba(0,0,0,.2);transition:transform .15s}
.switch input:checked + .track{background:var(--accent)}
.switch input:checked + .track::after{transform:translateX(14px)}
.switch input:focus-visible + .track{outline:2px solid var(--accent);outline-offset:2px}