:root{
  --main:#6B69D6; --accent:#20bf6b; --danger:#e84118;
  --bg:#f2f3f7; --card:#ffffff; --text:#222; --muted:#888;
  --bubble-me:#6B69D6; --bubble-other:#ffffff; --line:#e7e8ee; --inputbg:#fafbff;
  --shadow:rgba(20,20,60,.07); --overlay:rgba(20,20,60,.4);
}
[data-theme="dark"]{
  --bg:#14161d; --card:#1e2230; --text:#e8eaf2; --muted:#98a0b3;
  --bubble-me:#6B69D6; --bubble-other:#2a3040; --line:#2c3142; --inputbg:#232839;
  --shadow:rgba(0,0,0,.4); --overlay:rgba(0,0,0,.6);
}
*{box-sizing:border-box; -webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{margin:0;font-family:"Segoe UI",Hiragino Sans,"Noto Sans JP",sans-serif;background:var(--bg);color:var(--text);transition:background .2s,color .2s}
#app,.screen{height:100dvh}
.screen{display:flex;flex-direction:column}
.hidden{display:none!important}

.card{background:var(--card);border-radius:14px;box-shadow:0 4px 16px var(--shadow)}
.setup-card{max-width:430px;width:92vw;margin:auto;padding:26px}
.setup-head{display:flex;justify-content:space-between;align-items:flex-start;gap:10px}
.brand-row{display:flex;align-items:center;gap:9px}
.brand-dot{width:13px;height:13px;border-radius:4px;background:linear-gradient(135deg,#FF236C,#F13AD8);display:inline-block}
h1{font-size:19px;margin:0}h1 em{font-style:normal;color:var(--muted);font-weight:500;font-size:14px}
.sub{color:var(--muted);font-size:13px;margin:8px 0 18px}
.lbl{display:block;font-size:12px;color:var(--muted);margin:14px 0 6px;font-weight:600}
.row{display:flex;align-items:center;gap:10px}
input[type=text],textarea{border:1.5px solid var(--line);border-radius:10px;padding:11px 12px;font-size:16px;width:100%;outline:none;background:var(--inputbg);color:var(--text)}
input:focus,textarea:focus{border-color:var(--main)}
.pills{display:flex;gap:8px}
.pill{flex:1;padding:9px 0;border-radius:99px;border:1.5px solid var(--line);background:var(--card);font-size:14px;cursor:pointer;color:var(--muted)}
.pill.on{background:var(--main);border-color:var(--main);color:#fff;font-weight:600}
.adv{margin-top:14px}.adv summary{cursor:pointer;color:var(--muted);font-size:13px}
.hint{color:var(--muted);font-size:12px;margin:6px 0 0}
.center{text-align:center}
.check{display:flex;align-items:center;gap:8px;margin:16px 0 12px;font-size:14px}
.check a{color:var(--main)}

.btn{border:0;border-radius:12px;padding:12px 18px;font-size:15px;font-weight:600;cursor:pointer;transition:.15s;min-height:44px;touch-action:manipulation}
.btn.primary{background:var(--accent);color:#fff}
.btn.primary:hover{filter:brightness(1.06)}
.btn.primary:disabled{background:#b9e6cd;cursor:not-allowed;opacity:.7}
.btn.ghost{background:#eef0f6;color:#444}
[data-theme="dark"] .btn.ghost{background:#2c3142;color:#c9cfe0}
.btn.danger{background:#ffece7;color:var(--danger)}
[data-theme="dark"] .btn.danger{background:#3a2222;color:#ff8f7a}
.btn.block{width:100%}
.btn.xl{padding:16px;font-size:17px;border-radius:16px}
.btn.sm{padding:8px 14px;font-size:13px;min-height:38px}
.icon-btn{border:0;background:#eef0f6;width:42px;height:42px;border-radius:50%;font-size:18px;cursor:pointer;color:#333;touch-action:manipulation}
[data-theme="dark"] .icon-btn{background:#2c3142;color:#c9cfe0}
[data-theme="dark"] .icon-btn:not(.warn) img{filter:invert(1) brightness(1.6)}
[data-theme="dark"] .icon-btn.warn img{filter:none}
[data-theme="dark"] .block-btn img{filter:brightness(1.3) saturate(1.2)}
.icon-btn.warn{background:#ffece7;color:var(--danger)}
[data-theme="dark"] .icon-btn.warn{background:#3a2222;color:#ff8f7a}
.theme-btn{display:inline-flex;align-items:center;gap:7px;background:var(--main);color:#fff;border:0;border-radius:99px;padding:8px 16px;min-height:38px;font-size:13.5px;font-weight:600;cursor:pointer;touch-action:manipulation}
.theme-btn:hover{filter:brightness(1.08)}
.theme-btn img{width:17px;height:17px}
.theme-ico-btn{background:var(--main)}
.theme-ico-btn:hover{filter:brightness(1.08)}
.theme-ico-btn img{width:20px;height:20px;display:block}
.block-btn{display:inline-flex;align-items:center;gap:6px;background:#ffece7;color:var(--danger);border:0;border-radius:99px;padding:8px 14px;min-height:38px;font-size:13px;font-weight:700;cursor:pointer;touch-action:manipulation}
.block-btn:hover{filter:brightness(.97)}
.block-btn img{width:16px;height:16px}
[data-theme="dark"] .block-btn{background:#3a2222;color:#ff8f7a}
.icon-btn img{width:20px;height:20px;display:block}
.send-btn{background:var(--accent);width:48px;height:48px;min-height:48px;border-radius:50%;padding:0;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.send-btn img{width:22px;height:22px}
.send-btn:disabled{background:#b9e6cd;cursor:not-allowed;opacity:.7}
.setup-sep{display:flex;align-items:center;gap:10px;margin:16px 0;color:var(--muted);font-size:12px}
.setup-sep::before,.setup-sep::after{content:"";flex:1;height:1px;background:var(--line)}
.btn.primary img{width:18px;height:18px;display:inline-block;vertical-align:-3px}

.topbar{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:var(--card);border-bottom:1px solid var(--line)}
.top-actions{display:flex;gap:8px;align-items:center}
.list-body{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:14px}
.me-card{display:flex;align-items:center;gap:14px;padding:14px}
.me-name{font-weight:700}
.me-sub{color:var(--muted);font-size:13px}

.pulse-wrap{position:relative;height:110px;display:flex;align-items:center;justify-content:center}
.pulse{position:absolute;width:64px;height:64px;border-radius:50%;background:rgba(107,105,214,.35);animation:pulse 1.6s infinite}
.pulse.d2{animation-delay:.55s}.pulse.d3{animation-delay:1.1s}
@keyframes pulse{0%{transform:scale(.45);opacity:1}100%{transform:scale(1.5);opacity:0}}
.searching-text{font-weight:600;margin:4px 0 14px}

.rooms-list{display:flex;flex-direction:column;gap:8px}
.room-item{display:flex;align-items:center;gap:11px;padding:11px 12px;border-radius:12px;background:var(--card);box-shadow:0 2px 8px var(--shadow);cursor:pointer;position:relative;border:1px solid transparent}
.room-item:hover{border-color:var(--main)}
.room-mid{flex:1;min-width:0}
.room-name{font-weight:600;font-size:14.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.room-last{color:var(--muted);font-size:12.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}
.room-right{display:flex;flex-direction:column;align-items:flex-end;gap:5px}
.room-time{color:var(--muted);font-size:11px}
.room-unread{background:var(--danger);color:#fff;font-size:11px;font-weight:700;min-width:20px;height:20px;border-radius:99px;display:flex;align-items:center;justify-content:center;padding:0 6px}

#app-main{height:100dvh;display:flex;overflow:hidden}
#panel-list{width:340px;min-width:300px;display:flex;flex-direction:column;background:var(--bg);border-right:1px solid var(--line)}
#panel-chat{flex:1;display:flex;flex-direction:column;min-width:0;position:relative}
.chat-empty{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:20px}

.chat-head{display:flex;align-items:center;gap:11px;padding:8px 12px;background:var(--card);border-bottom:1px solid var(--line)}
.peer-meta{flex:1;min-width:0}
.peer-name{font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.peer-sub{color:var(--muted);font-size:12px}
#msgs{flex:1;overflow-y:auto;padding:14px 12px;display:flex;flex-direction:column;gap:2px;max-width:760px;width:100%;margin:0 auto}
.mrow{display:flex;gap:8px;margin-top:8px;align-items:flex-end}
.mrow.me{flex-direction:row-reverse}
.mrow .avatar{flex-shrink:0}
.bubble-wrap{max-width:78%;display:flex;flex-direction:column}
.mrow.me .bubble-wrap{align-items:flex-end}
.bubble{padding:9px 13px;border-radius:16px;font-size:15px;line-height:1.45;white-space:pre-wrap;word-break:break-word;box-shadow:0 1px 2px var(--shadow)}
.mrow:not(.me) .bubble{background:var(--bubble-other);border:1px solid var(--line);border-top-left-radius:5px}
.mrow.me .bubble{background:var(--bubble-me);color:#fff;border-top-right-radius:5px}
.time{font-size:10.5px;color:var(--muted);margin:3px 4px}
.sysmsg{text-align:center;color:var(--muted);font-size:12px;margin:10px 0}
.typing{padding:0 18px 4px;color:var(--muted);font-size:12.5px;max-width:760px;margin:0 auto;width:100%}
.tdot{display:inline-block;width:5px;height:5px;border-radius:50%;background:var(--muted);margin-right:3px;animation:blink 1.2s infinite}
.tdot:nth-child(2){animation-delay:.2s}.tdot:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,80%,100%{opacity:.25}40%{opacity:1}}

.chat-foot{display:flex;gap:9px;align-items:flex-end;padding:10px 12px calc(10px + env(safe-area-inset-bottom));background:var(--card);border-top:1px solid var(--line);max-width:784px;margin:0 auto;width:100%}
textarea#inp-msg{resize:none;max-height:120px}
textarea#inp-msg:disabled{opacity:.55}
.btn.primary:disabled{background:#b9e6cd;cursor:not-allowed;opacity:.7}

.modal{position:fixed;inset:0;background:var(--overlay);display:flex;align-items:center;justify-content:center;z-index:90;padding:16px}
.modal-card{background:var(--card);border-radius:16px;padding:22px;width:100%;max-width:460px;display:flex;flex-direction:column;gap:10px;box-shadow:0 10px 40px var(--shadow)}
.modal-card h2{margin:0;font-size:17px}
.modal-btns{display:flex;gap:8px;flex-wrap:wrap}
.modal-btns .btn{flex:1;min-width:120px}

#toast{position:fixed;left:50%;bottom:34px;transform:translateX(-50%);background:#333;color:#fff;padding:11px 20px;border-radius:99px;font-size:14px;z-index:99;box-shadow:0 6px 20px rgba(0,0,0,.25)}
.status{margin-top:14px;font-size:14px;color:var(--main);text-align:center}
.status.err{color:var(--danger)}

@media (max-width: 880px){
  #panel-list{width:100%;min-width:0}
  #app-main.mobile-chat #panel-list{display:none}
  #app-main.mobile-list #panel-chat{display:none}
  .bubble{font-size:15.5px}
  .mrow .avatar{display:none}
  .me-card{padding:12px}
  .topbar{padding:10px 12px}
  .icon-btn{width:40px;height:40px}
}

@media (prefers-reduced-motion: reduce){
  .pulse,.tdot{animation:none}
}