:root{
  --green:#008069;--green-d:#006b58;--accent:#00a884;--bg:#f0f2f5;--card:#fff;--text:#111b21;--muted:#667781;
  --line:#e2e6ea;--out:#d9fdd3;--in:#fff;--danger:#d93025;--chatbg:#efeae2;--tick:#53bdeb;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font:16px/1.4 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;overscroll-behavior:none}
#app{height:100vh;height:100dvh;display:flex;flex-direction:column;max-width:900px;margin:0 auto;background:var(--bg);position:relative}
.splash{margin:auto;color:var(--muted)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
.hdr{background:var(--green);color:#fff;display:flex;align-items:center;gap:6px;padding:calc(env(safe-area-inset-top) + 8px) 8px 8px;min-height:56px;flex:none}
.hdr h1{font-size:18px;margin:0;flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:600}
.hdr .sub{font-size:12px;opacity:.85;font-weight:400;display:block;overflow:hidden;text-overflow:ellipsis}
.ib{background:none;border:0;color:#fff;width:42px;height:42px;border-radius:50%;font-size:22px;display:flex;align-items:center;justify-content:center;flex:none}
.ib:active{background:#ffffff33}
.body{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;padding-bottom:env(safe-area-inset-bottom)}
.pad{padding:14px}
.card{background:var(--card);border-radius:12px;box-shadow:0 1px 2px #0001}
.row{display:flex;align-items:center;gap:12px;padding:12px 14px;background:var(--card);border-bottom:1px solid var(--line);cursor:pointer;width:100%;text-align:left;border-top:0;border-left:0;border-right:0}
.row:active{background:#f5f6f6}
.avatar{width:46px;height:46px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:19px;flex:none}
.avatar.c2{background:#5b6abf}.avatar.c3{background:#c2185b}.avatar.c4{background:#ef6c00}.avatar.c5{background:#00838f}
.grow{flex:1;min-width:0}
.t1{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.t2{color:var(--muted);font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.meta{display:flex;flex-direction:column;align-items:flex-end;gap:4px;flex:none;font-size:12px;color:var(--muted)}
.badge{background:var(--accent);color:#fff;border-radius:999px;min-width:22px;height:22px;padding:0 6px;font-size:13px;font-weight:700;display:inline-flex;align-items:center;justify-content:center}
.off{opacity:.55}
.empty{text-align:center;color:var(--muted);padding:40px 24px}
.fab{position:absolute;right:18px;bottom:calc(env(safe-area-inset-bottom) + 18px);width:56px;height:56px;border-radius:50%;background:var(--accent);color:#fff;border:0;font-size:30px;box-shadow:0 3px 8px #0004;display:flex;align-items:center;justify-content:center}
.search{padding:8px 10px;background:var(--bg);flex:none}
.search input{width:100%;padding:10px 14px;border-radius:999px;border:1px solid var(--line);background:#fff}
label.f{display:block;font-size:13px;font-weight:600;color:var(--muted);margin:14px 0 4px}
.in{width:100%;padding:12px;border:1px solid #cfd6db;border-radius:10px;background:#fff}
.in:focus{outline:2px solid var(--accent);border-color:transparent}
.help{font-size:13px;color:var(--muted);margin:4px 0 0}
.btn{display:block;width:100%;padding:13px;border:0;border-radius:10px;background:var(--accent);color:#fff;font-weight:600;margin-top:16px}
.btn:active{background:var(--green-d)}
.btn.sec{background:#e9edef;color:var(--text)}
.btn.danger{background:var(--danger)}
.btn[disabled]{opacity:.55}
.sw{display:flex;align-items:center;gap:10px;margin-top:14px}
.err{background:#fdecea;color:#8a1c14;padding:10px 12px;border-radius:10px;margin-top:12px;font-size:14px}
.ok{background:#e6f4ea;color:#14602a;padding:10px 12px;border-radius:10px;margin-top:12px;font-size:14px}
.login{margin:auto;width:100%;max-width:380px;padding:24px}
.login h2{text-align:center;margin:0 0 4px}
.login p.s{text-align:center;color:var(--muted);margin:0 0 12px}
.menu{position:absolute;right:8px;top:calc(env(safe-area-inset-top) + 52px);background:#fff;color:var(--text);border-radius:10px;box-shadow:0 4px 18px #0004;z-index:20;min-width:200px;overflow:hidden}
.menu button{display:block;width:100%;text-align:left;padding:13px 16px;background:none;border:0;border-bottom:1px solid var(--line)}
.menu button:last-child{border:0}
.menu button:active{background:#f0f2f5}
.scrim{position:absolute;inset:0;z-index:10}
/* chat */
.chat{flex:1;overflow-y:auto;background:var(--chatbg);padding:10px 10px 6px;display:flex;flex-direction:column;gap:3px;-webkit-overflow-scrolling:touch}
.day{align-self:center;background:#fff;color:var(--muted);font-size:12px;padding:3px 10px;border-radius:8px;margin:8px 0;box-shadow:0 1px 1px #0001}
.b{max-width:82%;padding:6px 9px 4px;border-radius:9px;box-shadow:0 1px 1px #0002;word-wrap:break-word;overflow-wrap:anywhere;position:relative}
.b.in{align-self:flex-start;background:var(--in);border-top-left-radius:2px}
.b.out{align-self:flex-end;background:var(--out);border-top-right-radius:2px}
.b .tx{white-space:pre-wrap}
.b .ft{display:flex;justify-content:flex-end;align-items:center;gap:4px;font-size:11px;color:var(--muted);margin-top:2px}
.b .who{font-size:11px;color:var(--green);font-weight:600}
.b img,.b video{max-width:100%;border-radius:6px;display:block;max-height:340px}
.b audio{width:230px;max-width:100%;height:40px}
.b .cap{margin-top:4px}
.tick{letter-spacing:-3px}.tick.read{color:var(--tick)}
.b.failed{background:#ffe3e0}
.ferr{color:var(--danger);font-size:12px;margin-top:2px}
.more{align-self:center;background:#fff;border:0;border-radius:999px;padding:6px 14px;font-size:13px;color:var(--green);box-shadow:0 1px 1px #0002;margin-bottom:6px}
.closed{background:#fff3cd;color:#664d03;padding:9px 12px;font-size:13px;flex:none}
.comp{display:flex;align-items:flex-end;gap:8px;padding:8px 8px calc(env(safe-area-inset-bottom) + 8px);background:var(--bg);flex:none}
.comp textarea{flex:1;resize:none;border:0;border-radius:22px;padding:11px 14px;max-height:120px;background:#fff;line-height:1.3;min-height:44px}
.comp textarea:focus{outline:none}
.rbtn{width:46px;height:46px;border-radius:50%;border:0;background:var(--accent);color:#fff;font-size:20px;flex:none;display:flex;align-items:center;justify-content:center}
.rbtn.rec{background:var(--danger)}
.recbar{flex:1;display:flex;align-items:center;gap:10px;background:#fff;border-radius:22px;padding:0 14px;min-height:46px}
.dot{width:10px;height:10px;border-radius:50%;background:var(--danger);animation:bl 1s infinite}
@keyframes bl{50%{opacity:.2}}
.xbtn{background:none;border:0;font-size:20px;color:var(--muted)}
#toast{position:fixed;left:50%;bottom:90px;transform:translateX(-50%);background:#222;color:#fff;padding:10px 16px;border-radius:10px;font-size:14px;opacity:0;pointer-events:none;transition:opacity .2s;z-index:99;max-width:90%;text-align:center}
#toast.show{opacity:.95}
.kv{display:flex;gap:8px;align-items:center}
.kv input{flex:1}
.mini{padding:10px 12px;border:0;border-radius:8px;background:#e9edef}
.sec-title{font-size:13px;font-weight:700;color:var(--green);text-transform:uppercase;margin:20px 0 6px;letter-spacing:.04em}

.b a{color:#027eb5}