/* Balance Messenger — mobile-first, light and dark */
:root{--bg:#f4f5fb;--panel:#fff;--ink:#17162b;--muted:#6b6f86;--line:#e6e7f0;--brand:#5b6cff;--brand2:#7b5bff;--mine:#5b6cff;--mine-ink:#fff;--their:#fff;--danger:#d33;--ok:#1a9d55;
  --r:18px;--safe-b:env(safe-area-inset-bottom);--safe-t:env(safe-area-inset-top)}
@media (prefers-color-scheme:dark){:root{--bg:#0f1020;--panel:#181a2e;--ink:#eceefa;--muted:#9a9db8;--line:#2a2d46;--their:#22253d;--mine:#5b6cff}}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;overscroll-behavior:none;background:var(--bg);color:var(--ink);font:16px/1.4 -apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,sans-serif;overflow:hidden}
button,input,textarea{font:inherit;color:inherit}
button{cursor:pointer}
#app{height:100dvh;display:flex;flex-direction:column;max-width:760px;margin:0 auto;background:var(--bg)}
.top{display:flex;align-items:center;gap:10px;padding:calc(10px + var(--safe-t)) 14px 10px;background:var(--panel);border-bottom:1px solid var(--line);min-height:56px}
.top h1{font-size:19px;margin:0;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.top .sub{font-size:12px;color:var(--muted);font-weight:400}
.ibtn{width:40px;height:40px;border-radius:12px;border:0;background:transparent;display:grid;place-items:center;font-size:20px;color:var(--brand)}
.ibtn:active{background:var(--line)}
.logo{width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--brand2));display:grid;place-items:center;color:#fff;font-weight:800}
.scroll{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch}
.auth{flex:1;display:flex;flex-direction:column;justify-content:center;padding:24px 22px calc(24px + var(--safe-b));gap:14px;max-width:420px;width:100%;margin:0 auto}
.auth h2{font-size:28px;margin:8px 0 0}
.auth p{color:var(--muted);margin:0}
.tabs{display:flex;background:var(--line);border-radius:14px;padding:4px}
.tabs button{flex:1;border:0;background:transparent;padding:10px;border-radius:11px;font-weight:600;color:var(--muted)}
.tabs button.on{background:var(--panel);color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.08)}
label.f{display:flex;flex-direction:column;gap:6px;font-size:14px;color:var(--muted)}
.inp{width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:14px;background:var(--panel);outline:none}
.inp:focus{border-color:var(--brand)}
.btn{border:0;border-radius:14px;padding:14px 16px;font-weight:700;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff}
.btn:disabled{opacity:.6}
.btn.ghost{background:var(--panel);color:var(--brand);border:1px solid var(--line)}
.btn.danger{background:var(--panel);color:var(--danger);border:1px solid var(--line)}
.note{font-size:13px;color:var(--muted)}
.err{color:var(--danger);font-size:14px;min-height:1.2em}
.chat-row{display:flex;gap:12px;align-items:center;padding:12px 14px;border-bottom:1px solid var(--line);background:var(--panel);width:100%;border-left:0;border-right:0;border-top:0;text-align:left}
.chat-row:active{background:var(--line)}
.ava{flex:0 0 46px;width:46px;height:46px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:700;font-size:18px}
.chat-meta{flex:1;min-width:0}
.chat-meta b{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chat-meta span{display:block;color:var(--muted);font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chat-side{display:flex;flex-direction:column;align-items:flex-end;gap:4px;font-size:12px;color:var(--muted)}
.badge{background:var(--brand);color:#fff;border-radius:10px;padding:1px 7px;font-size:12px;font-weight:700}
.empty{padding:40px 24px;text-align:center;color:var(--muted)}
.msgs{flex:1;overflow-y:auto;padding:12px 10px;display:flex;flex-direction:column;gap:4px}
.day{align-self:center;font-size:12px;color:var(--muted);background:var(--panel);padding:3px 10px;border-radius:10px;margin:8px 0}
.bub{max-width:80%;padding:8px 12px 6px;border-radius:var(--r);background:var(--their);align-self:flex-start;box-shadow:0 1px 1px rgba(0,0,0,.05);word-wrap:break-word;white-space:pre-wrap}
.bub.me{align-self:flex-end;background:var(--mine);color:var(--mine-ink)}
.bub .who{font-size:12px;font-weight:700;color:var(--brand);margin-bottom:2px}
.bub .t{font-size:11px;opacity:.65;text-align:right;margin-top:2px}
.bub.lock{font-style:italic;opacity:.7}
.bub img{max-width:100%;border-radius:12px;display:block;margin:2px 0}
.bub a.file{color:inherit;text-decoration:underline}
.composer{display:flex;align-items:flex-end;gap:8px;padding:8px 10px calc(8px + var(--safe-b));background:var(--panel);border-top:1px solid var(--line)}
.composer textarea{flex:1;resize:none;max-height:140px;min-height:42px;padding:10px 14px;border:1px solid var(--line);border-radius:21px;background:var(--bg);outline:none}
.send{width:42px;height:42px;border-radius:50%;border:0;background:var(--brand);color:#fff;font-size:18px;display:grid;place-items:center;flex:0 0 42px}
.sheet-bg{position:fixed;inset:0;background:rgba(10,10,30,.45);display:flex;align-items:flex-end;justify-content:center;z-index:10}
.sheet{background:var(--panel);width:100%;max-width:760px;border-radius:22px 22px 0 0;padding:18px 18px calc(18px + var(--safe-b));display:flex;flex-direction:column;gap:12px;max-height:90dvh;overflow:auto}
.sheet h3{margin:0;font-size:19px}
.fp{font-family:ui-monospace,Menlo,monospace;font-size:14px;letter-spacing:.5px;background:var(--bg);padding:10px;border-radius:12px;text-align:center}
.lockline{text-align:center;font-size:12px;color:var(--muted);padding:6px}
.fab{position:absolute;right:18px;bottom:calc(18px + var(--safe-b));width:56px;height:56px;border-radius:50%;border:0;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;font-size:26px;box-shadow:0 6px 18px rgba(91,108,255,.4)}
.list-wrap{position:relative;flex:1;display:flex;flex-direction:column;min-height:0}
/* v2 */
.logo.big{width:56px;height:56px;border-radius:16px;font-size:26px}
.link{border:0;background:none;color:var(--brand);padding:6px;font-weight:600;align-self:center}
.tip{display:block;width:calc(100% - 20px);margin:10px;padding:12px 14px;border:1px dashed var(--brand);border-radius:14px;background:var(--panel);color:var(--ink);text-align:left;font-size:14px}
.group{display:flex;flex-direction:column;gap:10px;padding-top:6px;border-top:1px solid var(--line)}
.group h4{margin:6px 0 0;font-size:15px}
.htitle{flex:1;min-width:0}
.htitle h1{font-size:17px}
.top .sub{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ibtn.back{font-size:30px}
.quote{display:flex;flex-direction:column;border-left:3px solid currentColor;padding:2px 8px;margin:2px 0 4px;border-radius:4px;background:rgba(127,127,160,.12);font-size:13px;cursor:pointer;min-width:0}
.quote b{font-size:12px}
.quote span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;opacity:.85}
.bub.me .quote{background:rgba(255,255,255,.18)}
.replybar{display:flex;align-items:center;gap:8px;padding:6px 10px;background:var(--panel);border-top:1px solid var(--line);color:var(--brand)}
.replybar .quote{flex:1;color:var(--brand)}
.replybar .quote span{color:var(--ink)}
.tick{font-size:11px;letter-spacing:-2px}
.bub audio{max-width:240px;height:40px;display:block}
.bub.flash{outline:2px solid var(--brand2)}
.toast{position:fixed;left:50%;bottom:calc(90px + var(--safe-b));transform:translate(-50%,20px);background:#17162b;color:#fff;padding:10px 16px;border-radius:12px;font-size:14px;opacity:0;transition:.25s;z-index:20;max-width:90vw}
.toast.on{opacity:.95;transform:translate(-50%,0)}
.rec{font-size:28px;text-align:center;font-variant-numeric:tabular-nums;padding:12px}
.bub{-webkit-user-select:text;user-select:text;-webkit-touch-callout:none}

/* keyboard on iPhone: the body never scrolls, the app follows the visible area */
body{position:fixed;inset:0}
#app{position:absolute;left:0;right:0;top:0;will-change:transform}
html.kb .composer{padding-bottom:8px}
html.kb .top{padding-top:10px}
.msgs{overscroll-behavior:contain}
/* v3 */
.ava{overflow:hidden;position:relative}
.ava img{width:100%;height:100%;object-fit:cover;display:block}
.ava.online::after{content:"";position:absolute;right:1px;bottom:1px;width:12px;height:12px;border-radius:50%;background:var(--ok);border:2px solid var(--panel)}
.top .ava{flex:0 0 38px;width:38px;height:38px;font-size:15px}
.phead{display:flex;flex-direction:column;align-items:center;gap:6px}
.pava .ava{width:84px;height:84px;font-size:34px}
.switch{display:flex;gap:10px;align-items:flex-start;font-size:15px;cursor:pointer}
.switch input{width:20px;height:20px;margin-top:1px;accent-color:var(--brand);flex:0 0 20px}
.lock{position:fixed;inset:0;background:var(--bg);z-index:30;display:flex}
.inp.pin{font-size:24px;text-align:center;letter-spacing:8px}
select.inp{appearance:auto}
/* bot */
.bbtns{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.bbtn{border:1px solid var(--brand);background:transparent;color:var(--brand);border-radius:12px;padding:7px 12px;font-size:14px;font-weight:600}
.bbtn:active{background:var(--brand);color:#fff}
a.lnk{color:inherit;text-decoration:underline;word-break:break-all}
/* swipes */
.bub{position:relative}
.bub.swipe-ok::after{content:"↩";position:absolute;right:-30px;top:50%;transform:translateY(-50%);font-size:18px;color:var(--brand)}
.verified{display:inline-grid;place-items:center;width:16px;height:16px;border-radius:50%;background:#2aabee;color:#fff;font-size:10px;font-weight:900;margin-left:5px;vertical-align:1px}
.okline{margin:0;color:var(--ok);font-weight:600}
img.logo{display:block;object-fit:cover;background:none;border-radius:50%;box-shadow:0 0 0 2px rgba(95,180,255,.35)}
img.logo.big{width:72px;height:72px;border-radius:50%}
.verified{display:inline-flex;align-items:center;justify-content:center;vertical-align:middle}
.chat-meta b{display:flex;align-items:center;gap:0;min-width:0}
.chat-meta b .nm{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}
.chat-meta b .nm{color:var(--ink);font-size:16px;display:block}.chat-meta b .verified{color:#fff;font-size:10px;display:inline-flex}
/* sheets & devices */
.grab{width:42px;height:5px;border-radius:3px;background:var(--line);margin:-6px auto 4px;flex:0 0 auto}
.sheet{will-change:transform}
.dev{display:flex;align-items:center;gap:10px;padding:8px 0;border-bottom:1px solid var(--line)}
.dev-info{flex:1;min-width:0;display:flex;flex-direction:column}
.dev-info span{font-size:13px;color:var(--muted)}
.btn.small{padding:8px 12px;font-size:14px}
.bbtns{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.bbtn{text-align:center;padding:9px 8px}