/* FileDrop — современный динамичный интерфейс */
:root{
  --bg:#0b1020;--fg:#e8ecf8;--mut:#8b95b3;
  --glass:rgba(255,255,255,.06);--glass-b:rgba(255,255,255,.12);--card:#151b30;--line:rgba(255,255,255,.1);
  --a1:#6366f1;--a2:#22d3ee;--grad:linear-gradient(135deg,var(--a1),var(--a2));
  --ok:#34d399;--bad:#fb7185;--shadow:0 10px 30px rgba(0,0,0,.35);--r:18px;
}
@media (prefers-color-scheme:light){:root{
  --bg:#eef1fb;--fg:#12172b;--mut:#5d6785;
  --glass:rgba(255,255,255,.7);--glass-b:rgba(255,255,255,.9);--card:#fff;--line:rgba(18,23,43,.1);
  --ok:#059669;--bad:#e11d48;--shadow:0 10px 30px rgba(60,70,120,.15);
}}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
[hidden]{display:none!important}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.45 -apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,sans-serif;display:flex;flex-direction:column;overflow:hidden;
  padding:env(safe-area-inset-top) env(safe-area-inset-right) 0 env(safe-area-inset-left)}
.bg{position:fixed;inset:-20%;z-index:-1;background:
  radial-gradient(40% 35% at 20% 20%,rgba(99,102,241,.45),transparent 70%),
  radial-gradient(35% 35% at 80% 15%,rgba(34,211,238,.35),transparent 70%),
  radial-gradient(45% 40% at 60% 90%,rgba(168,85,247,.30),transparent 70%);
  filter:blur(30px);animation:drift 22s ease-in-out infinite alternate}
@keyframes drift{to{transform:translate3d(4%,3%,0) scale(1.12) rotate(4deg)}}

header{display:flex;align-items:center;gap:10px;padding:12px 16px;flex-wrap:wrap;
  background:var(--glass);backdrop-filter:blur(18px) saturate(1.4);-webkit-backdrop-filter:blur(18px) saturate(1.4);border-bottom:1px solid var(--line)}
.logo{width:32px;height:32px;filter:drop-shadow(0 4px 10px rgba(99,102,241,.5))}
h1{font-size:20px;margin:0;font-weight:800;letter-spacing:-.02em;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
h2{font-size:15px;margin:0 0 8px}
.spacer{flex:1}
.status{display:inline-flex;align-items:center;gap:7px;font-size:12px;padding:4px 11px;border-radius:99px;background:var(--glass);border:1px solid var(--line)}
.status .dot{width:8px;height:8px;border-radius:50%;background:currentColor}
.status.on{color:var(--ok)}.status.on .dot{animation:pulse 2s infinite}
.status.off{color:var(--bad)}
.status span{color:var(--fg)}
@keyframes pulse{0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--ok) 60%,transparent)}100%{box-shadow:0 0 0 9px transparent}}

button,.btn{font:inherit;font-size:14px;padding:8px 14px;border-radius:12px;border:1px solid var(--line);background:var(--glass);color:var(--fg);cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:6px;
  transition:transform .15s,background .2s,box-shadow .2s,opacity .2s}
button:hover:not(:disabled),.btn:hover{background:var(--glass-b);transform:translateY(-1px)}
button:active:not(:disabled){transform:scale(.96)}
button:disabled{opacity:.55;cursor:default}
button.primary,.btn.primary{background:var(--grad);border:none;color:#fff;font-weight:600;box-shadow:0 6px 18px rgba(99,102,241,.4)}
button.primary:hover:not(:disabled),.btn.primary:hover{background:var(--grad);box-shadow:0 8px 24px rgba(99,102,241,.55)}
button.danger{border-color:color-mix(in srgb,var(--bad) 60%,transparent);color:var(--bad)}
header button{padding:6px 12px}

main{flex:1;min-height:0;width:100%;max-width:820px;margin:0 auto;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:14px;scroll-behavior:smooth}
section{background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:var(--r);padding:14px;box-shadow:var(--shadow);animation:rise .4s both}
#chat{background:none;border:none;box-shadow:none;backdrop-filter:none;padding:0;flex:1;display:flex;flex-direction:column}
#messages{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
#empty{margin:auto;text-align:center;max-width:380px;padding:24px;color:var(--mut)}
#empty::before{content:"💬";display:block;font-size:44px;margin-bottom:8px;animation:float 3s ease-in-out infinite}
@keyframes float{50%{transform:translateY(-6px)}}
.muted,small{color:var(--mut)}

.row-msg{display:flex;gap:8px;align-items:flex-end;animation:rise .35s cubic-bezier(.2,.9,.3,1.2) both}
.row-msg.mine{justify-content:flex-end}
@keyframes rise{from{opacity:0;transform:translateY(14px) scale(.97)}to{opacity:1;transform:none}}
.avatar{flex:none;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:14px;color:#fff;
  background:linear-gradient(135deg,hsl(var(--h) 75% 55%),hsl(calc(var(--h) + 40) 80% 45%));box-shadow:0 4px 10px rgba(0,0,0,.25)}
.msg{max-width:min(82%,540px);padding:10px 14px;border-radius:20px;display:grid;gap:6px;overflow-wrap:anywhere;box-shadow:var(--shadow)}
.theirs .msg{background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--line);border-bottom-left-radius:6px}
.mine .msg{background:var(--grad);color:#fff;border-bottom-right-radius:6px}
.mine .meta{color:rgba(255,255,255,.8)}
.mine a{color:#fff}
.msg .text{white-space:pre-wrap}
.meta{font-size:12px;color:var(--mut)}
a{color:var(--a2);text-underline-offset:2px}

.file{display:grid;grid-template-columns:auto 1fr auto;gap:2px 12px;align-items:center;padding:10px;border-radius:14px;background:rgba(0,0,0,.18);border:1px solid var(--line);transition:background .3s,border-color .3s}
.theirs .file{background:var(--glass)}
.file.done{border-color:color-mix(in srgb,var(--ok) 60%,transparent);background:color-mix(in srgb,var(--ok) 12%,transparent)}
.file.done .meta{color:var(--ok);font-weight:600}
.ficon{font-size:26px;width:44px;height:44px;display:grid;place-items:center;border-radius:12px;background:rgba(255,255,255,.12)}
.finfo{min-width:0}
.fname{font-weight:600;word-break:break-word}
.file button{font-size:13px;padding:7px 12px}
.bar{grid-column:1/-1;height:6px;border-radius:3px;background:rgba(127,127,127,.25);overflow:hidden;margin-top:6px}
.bar i{display:block;height:100%;width:0;border-radius:3px;background:linear-gradient(90deg,var(--a1),var(--a2),var(--a1));background-size:200% 100%;animation:shimmer 1.2s linear infinite;transition:width .2s}
@keyframes shimmer{to{background-position:-200% 0}}

#lan h2{display:flex;align-items:center;justify-content:space-between}
h2 .x{padding:2px 8px;border:none;background:none;color:var(--mut)}
.lanbox{display:flex;gap:16px;align-items:center;flex-wrap:wrap}
#qr{background:#fff;padding:10px;border-radius:14px;line-height:0;box-shadow:var(--shadow)}
#qr svg{width:150px;height:150px}
#lanUrls div{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:15px;word-break:break-all;font-weight:600}
#lanState{margin:6px 0 0}

#composer{flex:none;width:100%;max-width:820px;margin:0 auto;padding:10px 14px calc(12px + env(safe-area-inset-bottom));
  background:var(--glass);backdrop-filter:blur(18px) saturate(1.4);-webkit-backdrop-filter:blur(18px) saturate(1.4);border-top:1px solid var(--line);border-radius:22px 22px 0 0}
.cbar{display:flex;gap:8px;align-items:flex-end}
.cbar button{width:44px;height:44px;padding:0;border-radius:50%;font-size:18px;flex:none}
.cbar textarea{flex:1;font:inherit;padding:11px 16px;border-radius:22px;border:1px solid var(--line);background:var(--glass);color:var(--fg);resize:none;max-height:140px;outline:none;transition:border-color .2s,box-shadow .2s}
.cbar textarea:focus{border-color:var(--a1);box-shadow:0 0 0 3px color-mix(in srgb,var(--a1) 25%,transparent)}
#sendBtn{font-size:18px}
#staged{list-style:none;padding:0;margin:0 0 8px;display:flex;flex-wrap:wrap;gap:6px;max-height:min(96px,18vh);overflow-y:auto;overscroll-behavior:contain}
#staged:empty{margin:0}
#staged li{background:var(--glass);border:1px solid var(--line);border-radius:99px;padding:3px 4px 3px 12px;font-size:13px;animation:rise .25s both}
#staged button{width:auto;height:auto;border:none;background:none;padding:0 8px;color:var(--mut);font-size:13px}

#dropHint{position:fixed;inset:0;display:grid;place-items:center;background:rgba(11,16,32,.75);backdrop-filter:blur(6px);color:#fff;font-size:22px;font-weight:700;z-index:20;pointer-events:none;border:3px dashed var(--a2);margin:10px;border-radius:24px;inset:0}

label{display:grid;gap:4px;font-size:13px;color:var(--mut)}
input{font:inherit;padding:10px 12px;border-radius:12px;border:1px solid var(--line);background:var(--glass);color:var(--fg);width:100%;outline:none}
input:focus{border-color:var(--a1)}
#me{display:grid;gap:12px}
.row{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin:12px 0}
dialog{background:var(--card);color:var(--fg);border:1px solid var(--line);border-radius:22px;max-width:480px;width:calc(100% - 32px);box-shadow:0 30px 80px rgba(0,0,0,.5);padding:20px;animation:rise .25s both}
dialog::backdrop{background:rgba(5,8,20,.6);backdrop-filter:blur(4px)}
dialog h3{margin:0 0 8px}
ol{padding-left:20px}
code{background:var(--glass);padding:1px 6px;border-radius:6px}
#toast{position:fixed;left:0;right:0;margin:0 auto;width:max-content;bottom:92px;background:var(--card);color:var(--fg);border:1px solid var(--line);padding:10px 18px;border-radius:14px;max-width:90vw;z-index:10;box-shadow:var(--shadow);animation:rise .25s both}
#stopped{position:fixed;inset:0;background:var(--bg);display:grid;place-items:center;text-align:center;padding:24px;z-index:30}
@media (max-width:520px){.msg{max-width:88%}header{padding:10px 12px}#localBtn{font-size:13px}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
#lan.compact{padding:10px 14px}
#lan.compact #qr,#lan.compact>p{display:none}
#lan.compact h2{margin-bottom:4px}
#lan.compact #lanUrls div{font-size:13px}
#lanUrls div{cursor:pointer;padding:2px 8px;border-radius:8px;margin-left:-8px}
#lanUrls div.sel{background:var(--glass-b)}
dialog h4{margin:14px 0 6px;font-size:13px;color:var(--mut);text-transform:uppercase;letter-spacing:.05em}
#devices{list-style:none;margin:0;padding:0;display:grid;gap:4px}
#devices li::before{content:"●";color:var(--ok);margin-right:8px;font-size:10px}
.keybig{font:800 38px/1.1 ui-monospace,Menlo,Consolas,monospace;letter-spacing:.12em;text-align:center;padding:12px;border-radius:16px;background:var(--glass);border:1px solid var(--line);background-image:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.joinrow{display:flex;gap:8px}
.joinrow input{text-align:center;letter-spacing:.2em;font-size:18px}
.msg .all{justify-self:start;margin-top:2px}
header button.icon{width:38px;height:38px;padding:0;border-radius:12px;display:inline-grid;place-items:center;flex:none}
header button.icon svg{width:20px;height:20px;transition:transform .4s}
header button.icon[hidden]{display:none}
header button.icon:hover svg{transform:rotate(60deg)}

/* Полоса прокрутки: тонкая, в цвет темы, у ленты чата проявляется при наведении */
*{scrollbar-width:thin;scrollbar-color:rgba(139,149,179,.35) transparent}
main{scrollbar-color:transparent transparent;transition:scrollbar-color .3s}
main:hover,main:focus-within,main:active{scrollbar-color:rgba(139,149,179,.45) transparent}
@supports not (scrollbar-color:auto){
  ::-webkit-scrollbar{width:8px;height:8px}
  ::-webkit-scrollbar-track{background:transparent}
  ::-webkit-scrollbar-thumb{background:rgba(139,149,179,.4);border-radius:8px;border:2px solid transparent;background-clip:content-box}
  ::-webkit-scrollbar-thumb:hover{background:rgba(139,149,179,.7);background-clip:content-box}
}
#update{position:fixed;top:12px;left:0;right:0;margin:0 auto;width:max-content;z-index:25;display:flex;gap:12px;align-items:center;background:var(--card);border:1px solid var(--a1);padding:8px 8px 8px 16px;border-radius:99px;box-shadow:var(--shadow);animation:rise .3s both;max-width:92vw}
.acts{display:flex;gap:6px;align-items:center}

/* Телефоны: карточка файла в две строки — название на всю ширину, кнопки под ним */
.file>*{min-width:0}
@media (max-width:560px){
  .file{grid-template-columns:auto minmax(0,1fr)}
  .file .acts{grid-column:1/-1;justify-content:stretch}
  .file .acts button{flex:1 1 auto;white-space:normal;line-height:1.25}
  .msg{max-width:calc(100% - 46px)}
  .mine .msg{max-width:92%}
  .msg:has(.file){width:calc(100% - 46px)}
  .mine .msg:has(.file){width:92%}
  .msg .all{justify-self:stretch}
  .fname{overflow-wrap:anywhere}
}
button.primary:disabled,.btn.primary:disabled{background:var(--glass-b);color:var(--mut);box-shadow:none;border:1px solid var(--line)}
.pathrow{display:grid;grid-template-columns:60px 1fr;gap:8px;align-items:baseline;margin:6px 0}
.pathrow span{color:var(--mut);font-size:13px}
.pathrow code{word-break:break-all;padding:6px 10px;border-radius:10px;font-size:14px}
#offQr{background:#fff;padding:10px;border-radius:14px;line-height:0;max-width:440px;margin:10px auto}
#offQr svg{width:100%;height:auto}
#offVideo{width:100%;max-height:50vh;border-radius:14px;background:#000;object-fit:cover}
#offManual{margin:10px 0}
#offManual summary{cursor:pointer;color:var(--mut);font-size:14px}
#offManual textarea{width:100%;margin-top:8px;font:12px ui-monospace,Menlo,Consolas,monospace;padding:8px;border-radius:10px;border:1px solid var(--line);background:var(--glass);color:var(--fg)}
.step{font-weight:700;margin:6px 0}
#offStatus{min-height:1.4em}
#offQr{box-sizing:border-box;width:min(100%,46vh,420px);max-width:none}
#offVideo2{width:140px;height:105px;object-fit:cover;border-radius:12px;background:#000;display:block;margin:8px auto}
#offVideo2[hidden]{display:none}
#offDlg{max-width:min(560px,calc(100% - 24px))}
.lanset{margin-top:14px;padding-top:6px;border-top:1px solid var(--line)}
.lanset h4{margin:8px 0 6px}
.lanset .row{justify-content:flex-start;align-items:center}
#lanOffer{position:fixed;top:72px;left:0;right:0;margin:0 auto;z-index:24;display:flex;gap:12px;align-items:center;flex-wrap:wrap;justify-content:flex-end;background:var(--card);border:1px solid var(--a1);padding:12px 14px;border-radius:18px;box-shadow:var(--shadow);animation:rise .3s both;width:min(560px,calc(100vw - 24px));font-size:14px}
#lanOffer span:first-child{flex:1 1 260px}
#lanOffer .offerbtns{display:flex;gap:8px}
.acts .routesw{background:none;border:1px solid var(--line);color:var(--mut);font-size:12px;padding:6px 10px;white-space:nowrap}
.acts .routesw[hidden]{display:none}

.pubnote{margin:0 0 14px;padding:16px 18px;border-radius:16px;background:linear-gradient(135deg,rgba(245,158,11,.22),rgba(99,102,241,.22));border:2px solid rgba(245,158,11,.7);box-shadow:0 0 0 4px rgba(245,158,11,.12)}
.pubnote .pubtitle{font-size:18px;font-weight:700;margin-bottom:6px}
.pubnote p{margin:0 0 12px;font-size:15px;line-height:1.45}
.pubnote button{font-size:16px;padding:12px 20px;width:100%;max-width:360px}
.pubnote[hidden]{display:none}