html,body,#app{height:100%;overflow:hidden}
body{
  background:
    radial-gradient(900px 500px at 0% 0%, var(--glow1), transparent 50%),
    radial-gradient(700px 480px at 100% 0%, var(--glow2), transparent 45%),
    var(--bg);
}
.shell{
  display:grid;grid-template-columns:380px 1fr;height:100vh;height:100dvh;
  background:transparent;
}
.sidebar{
  border-right:1px solid var(--line);
  background:linear-gradient(180deg,color-mix(in srgb, var(--bg2) 96%, transparent),color-mix(in srgb, var(--bg) 98%, transparent));
  display:flex;flex-direction:column;min-height:0;
  backdrop-filter:blur(20px);
}
.side-head{
  display:flex;justify-content:space-between;align-items:center;
  padding:1rem 1.05rem .85rem;
  border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:.55rem;font-family:var(--display);font-size:1.05rem}
.mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(145deg,var(--accent-hi),var(--accent-lo));color:var(--on-accent);font-weight:800;
  box-shadow:0 8px 18px var(--btn-shadow);
}
.mark.lg{
  width:84px;height:84px;border-radius:26px;font-size:2.2rem;margin:0 auto 1.1rem;
  box-shadow:0 20px 50px var(--btn-shadow);
}
.tabs{
  display:grid;grid-template-columns:repeat(4,1fr);gap:.3rem;
  padding:.65rem .7rem;
  margin:.55rem .7rem 0;
  border-radius:16px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);
}
.tabs button{
  border:0;background:transparent;color:var(--muted);
  padding:.62rem .15rem;border-radius:12px;cursor:pointer;
  font-size:.72rem;font-weight:800;letter-spacing:.02em;
  transition:background .15s, color .15s, transform .15s;
}
.tabs button:hover{color:var(--text)}
.tabs button.active{
  background:linear-gradient(135deg,var(--green-soft),transparent);
  color:var(--green);box-shadow:inset 0 0 0 1px var(--green-soft);
}
.search-wrap{padding:.75rem .85rem .55rem}
.search-wrap .input{
  border-radius:999px;padding:.78rem 1.05rem;
  background:rgba(255,255,255,.04);
}
.list{flex:1;overflow:auto;min-height:0;scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.12) transparent}
.list::-webkit-scrollbar{width:6px}
.list::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:99px}
.item{
  display:flex;gap:.8rem;padding:.85rem .95rem;cursor:pointer;margin:0 .45rem;
  border-radius:16px;border:1px solid transparent;
  transition:background .15s, border-color .15s, transform .15s;
}
.item:hover{background:rgba(255,255,255,.035)}
.item.active{
  background:linear-gradient(135deg,var(--green-soft),rgba(255,255,255,.03));
  border-color:var(--green-soft);
}
.avatar{
  width:48px;height:48px;border-radius:16px;
  background:linear-gradient(145deg,#24343c,#1a272e);
  display:grid;place-items:center;font-weight:800;flex-shrink:0;
  border:1px solid rgba(255,255,255,.06);
  box-shadow:0 8px 18px rgba(0,0,0,.25);
}
.item-body{min-width:0;flex:1}
.item-top{display:flex;justify-content:space-between;gap:.5rem;align-items:center}
.item-name{font-weight:750;font-size:.95rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.item-time{font-size:.68rem;color:var(--muted);font-weight:600}
.item-preview{font-size:.8rem;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:.15rem}
.badge{
  background:linear-gradient(135deg,var(--accent-hi),var(--accent-mid));color:var(--on-accent);
  border-radius:999px;min-width:20px;height:20px;padding:0 6px;
  font-size:.68rem;font-weight:800;display:inline-grid;place-items:center;
  box-shadow:0 6px 14px var(--btn-shadow);
}
.main{
  position:relative;min-width:0;
  background:
    linear-gradient(180deg, rgba(13,21,25,.35), rgba(7,11,14,.15)),
    radial-gradient(800px 400px at 70% 0%, var(--glow1), transparent 50%),
    var(--bg);
}
.empty-main{
  height:100%;display:grid;place-content:center;text-align:center;padding:2rem;
  animation:fadeUp .45s ease;
}
.empty-main h2{font-family:var(--display);font-size:1.8rem;margin:.2rem 0 .4rem;letter-spacing:-.02em}
.empty-main .muted{max-width:280px;margin:0 auto;line-height:1.5}
.chat-view{height:100%;display:flex;flex-direction:column;animation:fadeUp .25s ease}
.chat-head{
  display:flex;justify-content:space-between;align-items:center;
  padding:.95rem 1.1rem;border-bottom:1px solid var(--line);
  background:color-mix(in srgb, var(--panel) 72%, transparent);backdrop-filter:blur(16px);
}
.chat-title{font-weight:800;font-family:var(--display);letter-spacing:-.01em}
.chat-sub{font-size:.74rem;margin-top:.12rem}
.chat-actions{display:flex;gap:.4rem}
.messages{
  flex:1;overflow:auto;padding:1.15rem 1.1rem 1.3rem;
  display:flex;flex-direction:column;gap:.55rem;
  background:
    radial-gradient(circle at 15% 0%, var(--glow1), transparent 35%),
    radial-gradient(circle at 90% 20%, rgba(255,255,255,.02), transparent 30%),
    transparent;
}
.msg{
  max-width:min(74%,540px);padding:.78rem .95rem .55rem;
  border-radius:18px;line-height:1.4;font-size:.93rem;position:relative;
  animation:msgIn .22s ease;
  box-shadow:0 8px 20px rgba(0,0,0,.18);
}
.msg.mine{
  align-self:flex-end;
  background:linear-gradient(145deg,var(--msg-mine-a) 0%,var(--msg-mine-b) 100%);
  border-bottom-right-radius:5px;
  color:#f4fff8;
}
.msg.theirs{
  align-self:flex-start;
  background:rgba(255,255,255,.055);
  border:1px solid rgba(255,255,255,.06);
  border-bottom-left-radius:5px;
}
.msg .meta{display:block;text-align:right;font-size:.64rem;opacity:.72;margin-top:.28rem;font-weight:600}
.composer{
  display:flex;gap:.55rem;padding:.85rem .95rem calc(.85rem + env(safe-area-inset-bottom));
  border-top:1px solid var(--line);
  background:color-mix(in srgb, var(--panel) 85%, transparent);backdrop-filter:blur(16px);
  align-items:center;
}
.composer .input{
  border-radius:999px;padding:.8rem 1.1rem;
  background:rgba(255,255,255,.045);
}
.icon-btn{
  width:42px;height:42px;border-radius:14px;border:0;
  background:rgba(255,255,255,.05);color:var(--text);cursor:pointer;
  border:1px solid rgba(255,255,255,.05);
  transition:background .15s, transform .15s;
}
.icon-btn:hover{background:var(--green-soft)}
.icon-btn:active{transform:scale(.94)}
.empty{padding:2.4rem 1.2rem;text-align:center;color:var(--muted);line-height:1.5}
.toast{
  position:fixed;bottom:1.35rem;left:50%;transform:translateX(-50%);
  background:color-mix(in srgb, var(--panel) 95%, transparent);border:1px solid var(--green-soft);
  padding:.75rem 1.1rem;border-radius:14px;z-index:50;
  box-shadow:0 16px 40px rgba(0,0,0,.4);backdrop-filter:blur(12px);
  animation:fadeUp .25s ease;
}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@keyframes msgIn{from{opacity:0;transform:translateY(6px) scale(.98)}to{opacity:1;transform:none}}

@media(max-width:800px){
  .shell{grid-template-columns:1fr}
  .shell.chat-open .sidebar{display:none}
  .shell:not(.chat-open) .main{display:none}
}

/* Premium settings */
.settings-scroll{flex:1;overflow:auto;min-height:0;padding:0 0 1.5rem}
.settings-hero{
  margin:.85rem .85rem 1rem;padding:1.15rem 1.05rem;border-radius:20px;
  background:linear-gradient(135deg,var(--green-soft),rgba(255,255,255,.02));
  border:1px solid var(--green-soft);
  display:flex;gap:.95rem;align-items:center;
  box-shadow:0 14px 36px rgba(0,0,0,.25);
}
.settings-hero .avatar{
  width:60px;height:60px;font-size:1.3rem;border-radius:18px;
  background:linear-gradient(145deg,var(--accent-hi),var(--accent-lo));color:var(--on-accent);border:0;
}
.settings-hero .name{font-weight:800;font-size:1.08rem;font-family:var(--display)}
.settings-hero .sub{font-size:.78rem;color:var(--muted);margin-top:.18rem}
.settings-section{margin:0 .8rem 1.05rem}
.settings-section h4{
  margin:0 0 .5rem .4rem;font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:800
}
.settings-menu{
  border:1px solid var(--line);border-radius:18px;overflow:hidden;
  background:rgba(255,255,255,.025);
}
.settings-row{
  display:flex;align-items:center;gap:.85rem;width:100%;text-align:left;
  padding:.95rem 1rem;border:0;border-bottom:1px solid rgba(255,255,255,.045);
  background:transparent;color:var(--text);cursor:pointer;transition:background .15s;
}
.settings-row:last-child{border-bottom:0}
.settings-row:hover{background:rgba(255,255,255,.03)}
.settings-ico{
  width:40px;height:40px;border-radius:13px;display:grid;place-items:center;flex-shrink:0;
  background:var(--green-soft);color:var(--green);font-size:1.05rem
}
.settings-ico.warn{background:rgba(255,200,87,.12);color:#ffd27a}
.settings-ico.danger{background:rgba(255,107,107,.12);color:#ff9b9b}
.settings-ico.blue{background:rgba(100,160,255,.12);color:#9ec1ff}
.settings-row .txt{flex:1;min-width:0}
.settings-row .txt b{display:block;font-size:.93rem;font-weight:750}
.settings-row .txt small{display:block;color:var(--muted);font-size:.74rem;margin-top:.14rem}
.settings-row .chev{color:var(--muted);font-size:1.15rem;opacity:.7}
.settings-panel-view{padding:.8rem .9rem 1.6rem}
.settings-back{
  display:inline-flex;align-items:center;gap:.35rem;border:0;background:transparent;
  color:var(--green2);font-weight:800;cursor:pointer;padding:.25rem 0 .9rem;font-size:.9rem
}
.settings-panel-view h3{margin:0 0 1rem;font-size:1.2rem;font-weight:800;font-family:var(--display)}
.settings-field{margin-bottom:.9rem}
.settings-field label{display:block;font-size:.7rem;color:var(--muted);font-weight:800;margin-bottom:.38rem;letter-spacing:.06em}
.toggle-row{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.8rem 0;border-bottom:1px solid rgba(255,255,255,.05)}
.toggle-row:last-child{border-bottom:0}
.toggle{width:48px;height:28px;border-radius:999px;border:0;cursor:pointer;position:relative;background:#33424a;transition:.2s}
.toggle.on{background:linear-gradient(135deg,var(--accent-hi),var(--accent-mid))}
.toggle span{position:absolute;top:3px;left:3px;width:22px;height:22px;border-radius:50%;background:#fff;transition:.2s;box-shadow:0 2px 6px rgba(0,0,0,.25)}
.toggle.on span{left:23px}

.lock-screen{
  position:fixed;inset:0;z-index:100;
  background:
    radial-gradient(800px 500px at 50% -10%,var(--glow1),transparent 50%),
    #050809;
  display:grid;place-items:center;padding:1.5rem;
}
.lock-card{width:min(360px,100%);text-align:center}
.lock-card .mark{width:78px;height:78px;margin:0 auto 1rem;border-radius:24px;font-size:2.1rem}
.lock-card h2{margin:0 0 .35rem;font-weight:800;font-family:var(--display)}
.lock-pin{display:flex;gap:.5rem;justify-content:center;margin:1.3rem 0}
.lock-dot{width:12px;height:12px;border-radius:50%;border:2px solid rgba(255,255,255,.22)}
.lock-dot.filled{background:var(--green);border-color:var(--green);box-shadow:0 0 12px var(--green-soft)}
.lock-pad{display:grid;grid-template-columns:repeat(3,1fr);gap:.55rem;max-width:270px;margin:0 auto}
.lock-pad button{
  height:60px;border-radius:18px;border:1px solid var(--line);
  background:rgba(255,255,255,.04);color:var(--text);font-size:1.3rem;font-weight:700;cursor:pointer;
  transition:background .15s, transform .1s;
}
.lock-pad button:active{background:var(--green-soft);transform:scale(.96)}
.lock-err{color:#ff9b9b;min-height:1.2em;font-size:.85rem;margin-top:.8rem}
.bio-unlock-btn{width:100%;max-width:270px;margin:1rem auto .3rem;display:flex}
.bio-unlock-btn.hidden{display:none!important}