:root{
  --bg:#0e0a1a; --bg2:#17102b; --surface:#1d1633; --surface2:#251c40;
  --line:#2e2450; --muted:#9a8fbf; --text:#f2eefb;
  --purple:#8b5cf6; --purple2:#a78bfa; --purple-deep:#6d28d9; --purple-glow:rgba(139,92,246,.35);
  --green:#34d399; --red:#f87171; --amber:#fbbf24;
  --grad:linear-gradient(135deg,#a78bfa,#7c3aed 55%,#5b21b6);
  --safe-b:env(safe-area-inset-bottom,0px);
  --safe-t:env(safe-area-inset-top,0px);
  --nav-h:64px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;overflow:hidden}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  background:radial-gradient(120% 80% at 50% -10%,#241a45 0%,var(--bg) 60%);
  color:var(--text);-webkit-font-smoothing:antialiased;
  user-select:none;
}
svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.hidden{display:none!important}
code{font-family:ui-monospace,Menlo,monospace}
input,textarea{font:inherit;color:var(--text)}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
.muted{color:var(--muted)} .small{font-size:12px}
.err{color:var(--red);font-size:13px;min-height:16px;margin:6px 2px 0}

/* ---------- Desktop block ---------- */
.desktop-block{
  position:fixed;inset:0;z-index:9999;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:14px;text-align:center;padding:30px;
  background:radial-gradient(120% 80% at 50% 0%,#2a1f52,#0e0a1a);
}
.desktop-block img{border-radius:22px;box-shadow:0 12px 40px var(--purple-glow)}
.desktop-block h1{margin:6px 0 0;font-size:30px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.desktop-block p{color:#cfc6ea;max-width:360px;line-height:1.5}
.qrbox{background:#fff;padding:12px;border-radius:16px;line-height:0}
.qrbox img,.qrbox canvas,.qrbox table{width:180px;height:180px}
.qrbox.small img,.qrbox.small table{width:150px;height:150px}

/* ---------- App shell ---------- */
.app{position:fixed;inset:0;display:flex;flex-direction:column}
.view{position:absolute;inset:0;bottom:calc(var(--nav-h) + var(--safe-b));display:none;flex-direction:column;overflow:hidden}
.view.active{display:flex}
.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:calc(var(--safe-t) + 12px) 16px 12px;
  background:linear-gradient(180deg,rgba(29,22,51,.98),rgba(29,22,51,.85));
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line);
}
.tb-title{display:flex;align-items:center;gap:9px;font-size:19px;font-weight:700}
.tb-title img{border-radius:7px}
.icon-btn{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;color:var(--purple2);transition:.15s}
.icon-btn:active{background:var(--surface2);transform:scale(.94)}

/* ---------- Lists ---------- */
.list{flex:1;overflow-y:auto;padding:6px 0 12px}
.row{display:flex;align-items:center;gap:12px;padding:12px 16px;transition:.12s}
.row:active{background:var(--surface)}
.avatar{width:48px;height:48px;border-radius:50%;background:var(--grad);display:grid;place-items:center;
  font-weight:700;font-size:18px;color:#fff;flex:none;box-shadow:0 4px 14px var(--purple-glow)}
.avatar.big{width:96px;height:96px;font-size:36px}
.row-main{flex:1;min-width:0}
.row-main .name{font-weight:600;font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.row-main .sub{color:var(--muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}
.row-meta{display:flex;flex-direction:column;align-items:flex-end;gap:5px}
.badge{background:var(--purple);color:#fff;font-size:12px;font-weight:700;min-width:20px;height:20px;
  border-radius:10px;display:grid;place-items:center;padding:0 6px}
.time{font-size:11px;color:var(--muted)}
.empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:var(--muted);padding:40px}
.empty-ic{width:56px;height:56px;opacity:.4}
.empty p{text-align:center;line-height:1.6}

/* ---------- Bottom nav ---------- */
.bottomnav{
  position:absolute;left:0;right:0;bottom:0;height:calc(var(--nav-h) + var(--safe-b));
  padding-bottom:var(--safe-b);display:flex;background:rgba(23,16,43,.96);
  backdrop-filter:blur(16px);border-top:1px solid var(--line);z-index:20;
}
.nav-btn{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  color:var(--muted);font-size:11px;font-weight:600;transition:.15s}
.nav-btn svg{width:22px;height:22px}
.nav-btn.active{color:var(--purple2)}
.nav-btn.active svg{filter:drop-shadow(0 0 8px var(--purple-glow))}
.nav-btn:active{transform:scale(.92)}

/* ---------- Onboarding ---------- */
.onboard{display:none;position:absolute;inset:0;overflow-y:auto;background:radial-gradient(130% 90% at 50% -10%,#2b2056,#0e0a1a)}
.onboard.active{display:flex}
.onboard-inner{margin:auto;width:100%;max-width:420px;padding:calc(var(--safe-t) + 40px) 24px calc(var(--safe-b) + 30px);display:flex;flex-direction:column;gap:22px}
.brand{text-align:center;display:flex;flex-direction:column;align-items:center;gap:8px}
.brand-logo{border-radius:24px;box-shadow:0 16px 50px var(--purple-glow);animation:float 4s ease-in-out infinite}
@keyframes float{50%{transform:translateY(-8px)}}
.brand h1{margin:6px 0 0;font-size:34px;letter-spacing:-.5px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.tagline{color:#cfc6ea;margin:0;font-size:15px;line-height:1.5;max-width:300px}
.ob-card{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:22px;display:flex;flex-direction:column;gap:12px;box-shadow:0 20px 50px rgba(0,0,0,.4)}
.ob-card label{font-size:13px;color:var(--muted);font-weight:600;margin-bottom:-4px}
.foot-note{text-align:center;color:var(--muted);font-size:12.5px;line-height:1.6;margin:0}
.linkbtn{color:var(--purple2);font-weight:600;font-size:14px;padding:6px}

input[type=text],textarea{
  width:100%;background:var(--bg2);border:1px solid var(--line);border-radius:14px;
  padding:14px 16px;outline:none;font-size:16px;transition:.15s;resize:none
}
input[type=text]:focus,textarea:focus{border-color:var(--purple);box-shadow:0 0 0 3px var(--purple-glow)}
#inpToken{text-transform:uppercase;letter-spacing:1px;font-family:ui-monospace,monospace}

.btn-primary{background:var(--grad);color:#fff;font-weight:700;font-size:16px;padding:15px;border-radius:14px;
  box-shadow:0 10px 26px var(--purple-glow);transition:.15s}
.btn-primary:active{transform:scale(.97)}
.btn-primary:disabled{opacity:.6}
.btn-outline{background:var(--surface2);border:1px solid var(--line);color:var(--purple2);font-weight:600;padding:13px;border-radius:13px;transition:.15s}
.btn-outline:active{background:var(--surface);transform:scale(.98)}
.btn-danger{background:rgba(248,113,113,.12);border:1px solid rgba(248,113,113,.3);color:var(--red);font-weight:600;padding:13px;border-radius:13px}

/* ---------- Me / Wallet ---------- */
.me-scroll{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:14px}
.me-card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:18px;display:flex;flex-direction:column;gap:12px}
.me-card:first-child{align-items:center}
.me-name{text-align:center;font-size:20px;font-weight:700;background:transparent;border:none;border-bottom:1px dashed var(--line);border-radius:0;padding:6px 0;width:100%}
.handle-row{display:flex;align-items:center;gap:8px}
.handle-row code{background:var(--bg2);padding:8px 12px;border-radius:10px;font-size:14px;letter-spacing:.5px}
.mini-btn{color:var(--purple2);font-weight:600;font-size:13px;padding:6px 8px;background:var(--surface2);border-radius:9px}
.me-card-head{display:flex;justify-content:space-between;align-items:center;font-weight:700;font-size:15px}
.me-card-head b{color:var(--purple2);font-size:18px}
.invite-list{display:flex;flex-direction:column;gap:8px}
.invite-chip{display:flex;align-items:center;justify-content:space-between;background:var(--bg2);border:1px solid var(--line);
  border-radius:12px;padding:11px 14px;font-family:ui-monospace,monospace;font-size:14px}
.invite-chip.used{opacity:.45;text-decoration:line-through}
.switch-row{display:flex;align-items:center;justify-content:space-between;gap:12px}
.switch-row span{display:flex;flex-direction:column}
.switch-row small{color:var(--muted);font-size:12px;font-weight:400;margin-top:2px}
.switch-row input{display:none}
.switch{width:48px;height:28px;border-radius:16px;background:var(--line);position:relative;transition:.2s;flex:none}
.switch::after{content:"";position:absolute;top:3px;left:3px;width:22px;height:22px;border-radius:50%;background:#fff;transition:.2s}
.switch-row input:checked + .switch{background:var(--purple)}
.switch-row input:checked + .switch::after{transform:translateX(20px)}
.ver{text-align:center;color:var(--muted);font-size:12px;padding:10px}

/* ---------- Thread ---------- */
.thread{position:absolute;inset:0;z-index:40;display:flex;flex-direction:column;background:radial-gradient(120% 60% at 50% 0%,#1b1436,var(--bg));transform:translateX(0);transition:transform .22s ease}
.thread.hidden{display:none}
.thread.slide{transform:translateX(100%)}
.thread-top{gap:6px}
.th-peer{flex:1;display:flex;align-items:center;gap:10px;min-width:0}
.th-info{min-width:0}
.th-info b{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:16px}
.th-info small{color:var(--green);font-size:12px;display:flex;align-items:center;gap:4px}
.msg-area{flex:1;overflow-y:auto;padding:16px 12px;display:flex;flex-direction:column;gap:8px}
.msg{max-width:82%;padding:9px 13px;border-radius:18px;font-size:15px;line-height:1.4;position:relative;word-wrap:break-word;overflow-wrap:anywhere;animation:pop .18s ease}
@keyframes pop{from{opacity:0;transform:translateY(6px) scale(.98)}}
.msg.out{align-self:flex-end;background:var(--grad);color:#fff;border-bottom-right-radius:6px;box-shadow:0 4px 14px var(--purple-glow)}
.msg.in{align-self:flex-start;background:var(--surface2);border:1px solid var(--line);border-bottom-left-radius:6px}
.msg img{max-width:100%;border-radius:12px;display:block;margin:-2px 0 4px}
.msg .m-meta{display:flex;align-items:center;gap:5px;justify-content:flex-end;margin-top:3px;font-size:10.5px;opacity:.75}
.msg .burn{color:var(--amber)}
.msg.out .burn{color:#fde68a}
.msg .grp-sender{font-size:12px;font-weight:700;color:var(--purple2);margin-bottom:2px}
.msg.expiring{animation:fade .5s ease forwards}
@keyframes fade{to{opacity:0;transform:scale(.9);height:0;padding:0;margin:0}}
.sys-note{align-self:center;background:var(--surface);border:1px solid var(--line);color:var(--muted);
  font-size:12px;padding:6px 12px;border-radius:12px;margin:6px 0;text-align:center;max-width:88%}

.composer{display:flex;align-items:flex-end;gap:6px;padding:8px 8px calc(8px + var(--safe-b));
  background:rgba(23,16,43,.96);backdrop-filter:blur(14px);border-top:1px solid var(--line)}
.composer textarea{flex:1;max-height:120px;border-radius:22px;padding:11px 15px;background:var(--bg2)}
.ttl-btn{display:flex;flex-direction:column;align-items:center;gap:1px;color:var(--purple2);padding:4px 6px;min-width:44px}
.ttl-btn svg{width:22px;height:22px}
.ttl-btn span{font-size:10px;font-weight:700}
.send-btn{width:46px;height:46px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;flex:none;box-shadow:0 6px 18px var(--purple-glow);transition:.15s}
.send-btn:active{transform:scale(.9)}
.send-btn svg{width:22px;height:22px}

/* ---------- Sheet / modal ---------- */
.sheet-wrap{position:fixed;inset:0;z-index:100;background:rgba(0,0,0,.6);display:flex;align-items:flex-end;animation:fadein .2s}
@keyframes fadein{from{opacity:0}}
.sheet{width:100%;background:var(--surface);border-radius:26px 26px 0 0;padding:10px 20px calc(24px + var(--safe-b));
  border-top:1px solid var(--line);max-height:88vh;overflow-y:auto;animation:up .25s cubic-bezier(.2,.8,.2,1)}
@keyframes up{from{transform:translateY(100%)}}
.sheet::before{content:"";display:block;width:42px;height:5px;border-radius:3px;background:var(--line);margin:0 auto 16px}
.sheet h3{margin:0 0 14px;font-size:19px}
.sheet .fld{margin-bottom:12px}
.sheet .fld label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px;font-weight:600}
.ttl-opts{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:8px}
.ttl-opt{padding:14px 8px;border-radius:14px;background:var(--bg2);border:1px solid var(--line);text-align:center;font-weight:600;transition:.15s}
.ttl-opt small{display:block;color:var(--muted);font-size:11px;font-weight:400;margin-top:3px}
.ttl-opt.sel{border-color:var(--purple);background:var(--surface2);box-shadow:0 0 0 2px var(--purple-glow)}
.ttl-opt.once{grid-column:span 3;background:linear-gradient(135deg,rgba(251,191,36,.12),rgba(139,92,246,.12));border-color:rgba(251,191,36,.4)}
.ttl-opt.once.sel{border-color:var(--amber)}
.sheet-list{display:flex;flex-direction:column;gap:2px;margin:0 -8px}
.picker-row{display:flex;align-items:center;gap:12px;padding:12px 8px;border-radius:12px}
.picker-row:active{background:var(--bg2)}
.picker-row input[type=checkbox]{width:22px;height:22px;accent-color:var(--purple)}
.recovery-box{background:var(--bg2);border:1px dashed var(--purple);border-radius:14px;padding:14px;font-family:ui-monospace,monospace;font-size:13px;word-break:break-all;line-height:1.5;margin-bottom:12px}

/* ---------- Toast ---------- */
.toast{position:fixed;left:50%;bottom:calc(var(--nav-h) + 24px + var(--safe-b));transform:translateX(-50%) translateY(20px);
  background:#000c;color:#fff;padding:12px 20px;border-radius:14px;font-size:14px;font-weight:600;
  opacity:0;pointer-events:none;transition:.25s;z-index:200;border:1px solid var(--line);max-width:86vw;text-align:center}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}