:root{
  --ink:#0e1a17; --ink-2:#14231f; --ink-3:#1c302b;
  --paper:#eef2f0; --paper-2:#ffffff; --line:#e2e9e5; --line-dark:rgba(255,255,255,.09);
  --text:#16211e; --text-dim:#647069;
  --on-ink:#e2ebe7; --on-ink-dim:#89a39a;
  --accent:#12a594; --accent-strong:#0d8577; --on-accent:#fff;
  --online:#3ad07a; --danger:#d15a52; --warn:#d9a441;
  --font-ui:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --font-mono:ui-monospace,"SF Mono","Cascadia Code","Roboto Mono",Menlo,Consolas,monospace;
  --r:12px; --r-sm:8px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:var(--font-ui);color:var(--text);background:var(--ink);
  -webkit-font-smoothing:antialiased;overflow:hidden}
button{font-family:inherit}
[hidden]{display:none !important}

.brand{display:flex;align-items:center;gap:.5rem}
.brand-mark{color:var(--accent);font-size:1.25rem;line-height:1}
.brand-name{font-weight:700;letter-spacing:.02em;color:var(--on-ink)}
.brand.small .brand-name{font-size:.98rem}

/* ---------- kirish / o'rnatish / ochish ---------- */
.auth{height:100%;display:flex;align-items:center;justify-content:center;padding:1.5rem;overflow-y:auto;
  background:radial-gradient(120% 90% at 50% -10%,#16302a 0%,var(--ink) 60%)}
.auth-card{width:100%;max-width:380px;background:var(--ink-2);border:1px solid var(--line-dark);
  border-radius:16px;padding:1.6rem 1.5rem 1.4rem;box-shadow:0 20px 60px rgba(0,0,0,.45);
  display:flex;flex-direction:column;margin:auto}
.auth-card.wide{max-width:460px}
.auth-card .brand{margin-bottom:1.2rem}
.auth-card h1{font-size:1.25rem;margin:.1rem 0 .6rem;color:var(--on-ink)}
.lead{font-size:.88rem;line-height:1.55;color:var(--on-ink-dim);margin:0 0 1rem}
.lead strong{color:var(--on-ink)}
.auth-card label{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.06em;text-transform:uppercase;
  color:var(--on-ink-dim);margin:.7rem 0 .3rem;display:block}
.auth-card input[type=password],.auth-card input[type=text],.auth-card input:not([type]),.code-input{
  width:100%;background:#0c1815;border:1px solid var(--line-dark);border-radius:var(--r-sm);
  color:var(--on-ink);padding:.6rem .7rem;font-size:.95rem;outline:none;transition:border-color .15s;
  font-family:inherit}
.auth-card input:focus,.code-input:focus{border-color:var(--accent)}
.code-input{font-family:var(--font-mono);letter-spacing:.08em;resize:vertical}
.check{display:flex !important;align-items:center;gap:.5rem;font-family:var(--font-ui) !important;
  text-transform:none !important;letter-spacing:0 !important;font-size:.85rem !important;
  color:var(--on-ink-dim);margin:.9rem 0 .2rem !important;cursor:pointer}
.check input{width:auto}
.btn-primary{margin-top:1.1rem;background:var(--accent);color:var(--on-accent);border:none;
  border-radius:var(--r-sm);padding:.7rem;font-size:.95rem;font-weight:600;cursor:pointer;transition:background .15s}
.btn-primary:hover{background:var(--accent-strong)}
.btn-primary:disabled{opacity:.6;cursor:default}
.btn-ghost{margin-top:.6rem;background:transparent;color:var(--on-ink);border:1px solid var(--line-dark);
  border-radius:var(--r-sm);padding:.55rem .8rem;font-size:.88rem;cursor:pointer}
.btn-ghost:hover{background:var(--ink-3)}
.btn-link{background:none;border:none;color:var(--accent);font-size:.85rem;cursor:pointer;
  margin-top:.8rem;padding:0;text-align:center}
.auth-note{font-size:.82rem;color:var(--on-ink-dim);margin:.9rem 0 0;text-align:center}
.auth-msg{margin-top:.7rem;font-size:.85rem;min-height:1.1em;text-align:center;color:var(--danger)}

.warn-box{background:rgba(217,164,65,.12);border:1px solid rgba(217,164,65,.35);border-radius:var(--r-sm);
  padding:.6rem .75rem;font-size:.83rem;line-height:1.5;color:#f0d9a8;margin:.4rem 0 .2rem}
.warn-box.danger{background:rgba(209,90,82,.12);border-color:rgba(209,90,82,.4);color:#f3c3bf;margin-top:1rem}

.pw-meter{height:5px;background:#0c1815;border-radius:99px;margin-top:.45rem;overflow:hidden}
.pw-bar{height:100%;width:0;border-radius:99px;transition:width .2s,background .2s}
.pw-bar.weak{background:var(--danger)} .pw-bar.mid{background:var(--warn)} .pw-bar.ok{background:var(--online)}
.pw-label{font-family:var(--font-mono);font-size:.7rem;color:var(--on-ink-dim);margin-top:.25rem;min-height:1em}

.recovery-code{font-family:var(--font-mono);font-size:1rem;line-height:1.9;letter-spacing:.06em;
  background:#0c1815;border:1px dashed var(--accent);border-radius:var(--r-sm);color:var(--on-ink);
  padding:.9rem;word-break:break-all;text-align:center;margin:.3rem 0 .2rem;user-select:all}

/* ---------- ilova ---------- */
.app{height:100%;display:flex;background:var(--paper)}
.sidebar{width:320px;flex:0 0 320px;background:var(--ink);color:var(--on-ink);
  display:flex;flex-direction:column;border-right:1px solid var(--line-dark)}
.side-head{display:flex;align-items:center;justify-content:space-between;padding:.85rem 1rem;
  border-bottom:1px solid var(--line-dark)}
.side-actions{display:flex;gap:.35rem}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;
  background:transparent;border:1px solid var(--line-dark);border-radius:var(--r-sm);color:var(--on-ink);
  font-size:1.05rem;cursor:pointer;transition:background .15s,border-color .15s}
.icon-btn:hover{background:var(--ink-3);border-color:transparent}
#btn-mute .ic-muted{display:none}
#btn-mute.muted .ic-sound{display:none}
#btn-mute.muted .ic-muted{display:inline;color:var(--danger)}

.conv-list{flex:1;overflow-y:auto;padding:.4rem}
.empty-hint{color:var(--on-ink-dim);font-size:.85rem;padding:1.2rem 1rem;line-height:1.5}
.messages .empty-hint{color:var(--text-dim);text-align:center}
.conv-item{width:100%;display:flex;align-items:center;gap:.65rem;padding:.5rem .55rem;background:transparent;
  border:none;border-radius:var(--r);cursor:pointer;text-align:left;color:var(--on-ink);transition:background .12s}
.conv-item:hover{background:var(--ink-2)}
.conv-item.active{background:var(--ink-3)}
.avatar-wrap{position:relative;flex:0 0 auto}
.avatar{width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-weight:600;color:#fff;font-size:1rem;background:linear-gradient(135deg,var(--accent),#0a6c60)}
.avatar.group{background:linear-gradient(135deg,#5a86c9,#2f4f8a)}
.online-dot{position:absolute;right:-1px;bottom:-1px;width:12px;height:12px;border-radius:50%;
  background:var(--online);border:2px solid var(--ink)}
.conv-item.active .online-dot{border-color:var(--ink-3)}
.conv-meta{min-width:0;flex:1}
.conv-top{display:flex;align-items:baseline;justify-content:space-between;gap:.5rem}
.conv-title{font-size:.94rem;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.conv-time{font-family:var(--font-mono);font-size:.66rem;color:var(--on-ink-dim);flex:0 0 auto}
.conv-sub{font-size:.8rem;color:var(--on-ink-dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:.12rem}
.conv-sub.waiting{color:var(--warn)}
.badge{flex:0 0 auto;min-width:20px;height:20px;padding:0 6px;border-radius:10px;background:var(--accent);
  color:#fff;font-size:.72rem;font-weight:700;display:flex;align-items:center;justify-content:center;margin-left:.3rem}

.side-foot{display:flex;align-items:center;justify-content:space-between;gap:.5rem;padding:.7rem 1rem;
  border-top:1px solid var(--line-dark)}
.me{display:flex;align-items:center;gap:.6rem;min-width:0}
.me-avatar{width:36px;height:36px;font-size:.9rem}
.me-meta{min-width:0}
.me-name{font-size:.9rem;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.me-handle{font-family:var(--font-mono);font-size:.72rem;color:var(--on-ink-dim)}

.chat{flex:1;display:flex;flex-direction:column;min-width:0;background:var(--paper)}
.chat-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  color:var(--text-dim);gap:.7rem;text-align:center;padding:1rem}
.tiny{font-size:.78rem;color:var(--text-dim);margin:0}
.empty-badge{width:64px;height:64px;border-radius:18px;display:flex;align-items:center;justify-content:center;
  font-size:1.8rem;color:var(--accent);background:#fff;border:1px solid var(--line)}
.chat-main{flex:1;display:flex;flex-direction:column;min-height:0}
.chat-head{display:flex;align-items:center;justify-content:space-between;gap:.75rem;padding:.7rem 1.1rem;
  background:#fff;border-bottom:1px solid var(--line)}
.chat-head-left{display:flex;align-items:center;gap:.2rem;min-width:0}
.btn-back{display:none;background:none;border:none;color:var(--text);font-size:1.6rem;line-height:1;cursor:pointer;padding:0 .3rem 0 0}
.chat-title{font-weight:700;font-size:1rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chat-sub{font-size:.78rem;color:var(--text-dim);margin-top:.1rem;display:flex;align-items:center;gap:.35rem}
.hdr-dot{width:8px;height:8px;border-radius:50%}
.hdr-dot.on{background:var(--online)} .hdr-dot.off{background:#c2ccc7}
.fp-warn{color:var(--danger);font-weight:600}
.lock-badge{font-family:var(--font-mono);font-size:.68rem;color:var(--accent-strong);
  background:color-mix(in srgb,var(--accent) 12%,#fff);border:1px solid color-mix(in srgb,var(--accent) 35%,#fff);
  padding:.2rem .5rem;border-radius:99px;white-space:nowrap}

.messages{flex:1;overflow-y:auto;padding:1rem 1.1rem 1.2rem;display:flex;flex-direction:column;gap:.35rem}
.day-sep{display:flex;justify-content:center;margin:.7rem 0 .5rem}
.day-sep span{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.05em;color:var(--text-dim);
  background:#fff;border:1px solid var(--line);padding:.2rem .6rem;border-radius:99px}
.msg-row{display:flex;max-width:100%}
.msg-row.mine{justify-content:flex-end}
.bubble{max-width:min(74%,560px);padding:.45rem .7rem .3rem;border-radius:14px;background:var(--paper-2);
  border:1px solid var(--line);box-shadow:0 1px 1px rgba(16,33,30,.03);word-wrap:break-word;overflow-wrap:anywhere}
.msg-row.mine .bubble{background:var(--accent);border-color:var(--accent);color:var(--on-accent);border-bottom-right-radius:5px}
.msg-row.theirs .bubble{border-bottom-left-radius:5px}
.msg-sender{font-size:.74rem;font-weight:700;color:var(--accent-strong);margin-bottom:.15rem}
.msg-body{font-size:.94rem;line-height:1.4;white-space:pre-wrap}
.msg-meta{display:flex;align-items:center;justify-content:flex-end;gap:.45rem;margin-top:.1rem}
.msg-time{font-family:var(--font-mono);font-size:.62rem;color:var(--text-dim)}
.msg-row.mine .msg-time{color:color-mix(in srgb,#fff 75%,var(--accent))}
.unverified{font-size:.62rem;color:var(--danger);font-weight:700}
.msg-row.mine .unverified{color:#ffe0dd}

.file-card{display:flex;align-items:center;gap:.6rem;padding:.15rem 0}
.file-icon{width:36px;height:36px;border-radius:9px;display:flex;align-items:center;justify-content:center;
  font-size:1.2rem;background:rgba(255,255,255,.18);flex:0 0 auto}
.msg-row.theirs .file-icon{background:var(--paper);border:1px solid var(--line)}
.file-info{min-width:0}
.file-name{font-size:.9rem;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:210px}
.file-size{font-family:var(--font-mono);font-size:.68rem;opacity:.85}
.file-dl{margin-left:.4rem;background:rgba(255,255,255,.22);border:none;color:inherit;font-size:.78rem;
  padding:.35rem .6rem;border-radius:7px;cursor:pointer;white-space:nowrap}
.msg-row.theirs .file-dl{background:var(--accent);color:#fff}
.file-dl:hover{opacity:.9}

.typing-bar{padding:.25rem 1.2rem;font-size:.78rem;color:var(--accent-strong);font-style:italic;background:var(--paper)}
.composer{display:flex;align-items:flex-end;gap:.5rem;padding:.65rem .9rem;background:#fff;border-top:1px solid var(--line)}
.composer .icon-btn{color:var(--text-dim);border-color:var(--line)}
.composer .icon-btn:hover{background:var(--paper);color:var(--accent-strong)}
#msg-input{flex:1;resize:none;max-height:140px;border:1px solid var(--line);border-radius:12px;padding:.6rem .8rem;
  font-size:.95rem;font-family:inherit;outline:none;line-height:1.4}
#msg-input:focus{border-color:var(--accent)}
.btn-send{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;flex:0 0 auto;
  background:var(--accent);border:none;border-radius:50%;color:#fff;cursor:pointer;transition:background .15s}
.btn-send:hover{background:var(--accent-strong)}

/* ---------- modallar ---------- */
.modal{position:fixed;inset:0;background:rgba(8,16,14,.55);display:flex;align-items:center;justify-content:center;padding:1rem;z-index:50}
.modal-card{width:100%;max-width:440px;background:#fff;border-radius:16px;overflow:hidden;
  box-shadow:0 24px 70px rgba(0,0,0,.4);display:flex;flex-direction:column;max-height:86vh}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.1rem .4rem}
.modal-head h2{font-size:1.1rem;margin:0}
.modal-head .icon-btn{color:var(--text-dim);border-color:var(--line)}
.tabs{display:flex;gap:.4rem;padding:.4rem 1.1rem}
.tab{flex:1;padding:.5rem;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-sm);
  cursor:pointer;font-size:.88rem;color:var(--text-dim);font-weight:600}
.tab.active{background:var(--accent);border-color:var(--accent);color:#fff}
.field{padding:.5rem 1.1rem}
.field label{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.06em;text-transform:uppercase;
  color:var(--text-dim);display:block;margin-bottom:.3rem}
.field input{width:100%;border:1px solid var(--line);border-radius:var(--r-sm);padding:.55rem .7rem;font-size:.94rem;outline:none;font-family:inherit}
.field input:focus{border-color:var(--accent)}
.people{overflow-y:auto;padding:.3rem 1.1rem;flex:1;min-height:140px}
.person{display:flex;align-items:center;gap:.6rem;padding:.45rem .5rem;border-radius:var(--r);cursor:pointer}
.person:hover{background:var(--paper)}
.person.selected{background:color-mix(in srgb,var(--accent) 14%,#fff);outline:1px solid var(--accent)}
.person.nokeys{opacity:.55}
.person .avatar{width:38px;height:38px;font-size:.9rem}
.person .online-dot{border-color:#fff}
.person-name{font-size:.92rem;font-weight:600}
.person-handle{font-family:var(--font-mono);font-size:.72rem;color:var(--text-dim)}
.modal-hint{font-size:.8rem;color:var(--text-dim);padding:.2rem 1.1rem;min-height:1em}
.modal-card .btn-primary{margin:.4rem 1.1rem 1.1rem}

.sec-body{overflow-y:auto;padding:.4rem 1.1rem 1.1rem}
.sec-block{padding:.7rem 0;border-bottom:1px solid var(--line)}
.sec-block:last-child{border-bottom:none}
.sec-label{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.06em;text-transform:uppercase;
  color:var(--text-dim);margin-bottom:.4rem}
.sec-code{font-family:var(--font-mono);font-size:.82rem;letter-spacing:.05em;color:var(--text);
  background:var(--paper);border-radius:var(--r-sm);padding:.5rem .6rem;word-break:break-all}
.sec-code.big{font-size:.95rem;line-height:1.6;text-align:center;border:1px solid var(--line)}
.sec-peers{display:flex;flex-direction:column;gap:.5rem}
.sec-peer{border:1px solid var(--line);border-radius:var(--r-sm);padding:.5rem .6rem}
.sec-peer.changed{border-color:var(--danger);background:rgba(209,90,82,.06)}
.sec-peer-name{font-size:.88rem;font-weight:600;margin-bottom:.25rem}
.sec-peer .sec-code{background:transparent;padding:0;font-size:.76rem}
.sec-accept{margin-top:.45rem;background:var(--danger);color:#fff;border:none;border-radius:7px;
  padding:.35rem .6rem;font-size:.78rem;cursor:pointer}
.sec-body .btn-ghost{color:var(--text);border-color:var(--line);width:100%}
.sec-body .btn-ghost:hover{background:var(--paper)}
.sec-body .recovery-code{background:var(--paper);color:var(--text);border-color:var(--accent);font-size:.85rem}
.sec-body .tiny{margin-top:.45rem;line-height:1.5}

.conv-list::-webkit-scrollbar,.messages::-webkit-scrollbar,.people::-webkit-scrollbar{width:9px}
.messages::-webkit-scrollbar-thumb{background:#d3ddd8;border-radius:9px}
.conv-list::-webkit-scrollbar-thumb{background:var(--ink-3);border-radius:9px}

@media (max-width:720px){
  .sidebar{width:100%;flex:1 1 auto}
  .app.chat-open .sidebar{display:none}
  .app:not(.chat-open) .chat{display:none}
  .btn-back{display:inline-flex;align-items:center}
  .bubble{max-width:84%}
  .lock-badge{display:none}
}
@media (prefers-reduced-motion:reduce){*{transition:none !important}}

/* ==================== MEDIA (rasm / ovoz / video) ==================== */
.img-msg{position:relative;cursor:pointer;border-radius:10px;overflow:hidden;max-width:260px}
.img-thumb{display:block;width:100%;height:auto;border-radius:10px;background:var(--paper)}
.img-open{position:absolute;inset:auto 0 0 0;background:linear-gradient(transparent,rgba(0,0,0,.62));
  color:#fff;font-size:.74rem;padding:1.6rem .55rem .4rem;opacity:0;transition:opacity .15s}
.img-msg:hover .img-open{opacity:1}
.img-caption{font-size:.9rem;line-height:1.4;padding:.35rem .1rem 0;white-space:pre-wrap}

.voice-msg{display:flex;align-items:center;gap:.55rem;min-width:220px;padding:.15rem 0}
.voice-btn{flex:0 0 auto;width:36px;height:36px;border-radius:50%;border:none;cursor:pointer;
  background:rgba(255,255,255,.22);color:inherit;font-size:.8rem;display:flex;align-items:center;justify-content:center}
.msg-row.theirs .voice-btn{background:var(--accent);color:#fff}
.voice-wave{flex:1;display:flex;align-items:center;gap:2px;height:28px}
.wbar{flex:1;min-width:2px;border-radius:2px;background:currentColor;opacity:.32;transition:opacity .1s}
.wbar.played{opacity:.95}
.voice-time{font-family:var(--font-mono);font-size:.68rem;opacity:.85;flex:0 0 auto}

.player-msg{display:flex;flex-direction:column;gap:.25rem;min-width:200px}
.inline-player{width:100%;max-width:320px;margin-top:.35rem;border-radius:8px}
video.inline-player{max-height:260px;background:#000}

.bubble.uploading{opacity:.7;font-style:italic}

/* yozib olish paneli */
.voice-bar{display:flex;align-items:center;gap:.6rem;padding:.45rem 1rem;background:#fff;
  border-top:1px solid var(--line);font-size:.84rem;color:var(--text-dim)}
.rec-dot{width:10px;height:10px;border-radius:50%;background:var(--danger);animation:pulse 1.1s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.25}}
.voice-timer{font-family:var(--font-mono);color:var(--text);font-weight:600}
.voice-cancel{background:none;border:none;color:var(--danger);cursor:pointer;font-size:.84rem;padding:0}
.voice-hint{margin-left:auto;font-size:.75rem;opacity:.75}
#btn-voice.recording{background:var(--danger);border-color:var(--danger);color:#fff}
@media (max-width:720px){.voice-hint{display:none}}

/* sudrab tashlash */
.chat-main.dragging::after{content:"Faylni tashlang";position:absolute;inset:0;display:flex;
  align-items:center;justify-content:center;background:rgba(18,165,148,.12);
  border:2px dashed var(--accent);color:var(--accent-strong);font-weight:600;pointer-events:none;z-index:5}
.chat-main{position:relative}

/* to'liq ekran rasm */
.lightbox{position:fixed;inset:0;z-index:80;background:rgba(6,12,10,.94);display:flex;
  align-items:center;justify-content:center;padding:2.5rem 1rem 1rem}
.lightbox img{max-width:100%;max-height:100%;object-fit:contain;border-radius:6px}
.lightbox-bar{position:absolute;top:.7rem;right:.8rem;display:flex;gap:.5rem;align-items:center}
.lightbox-bar .btn-ghost{margin:0;color:#fff;border-color:rgba(255,255,255,.25)}
.lightbox-bar .icon-btn{color:#fff;border-color:rgba(255,255,255,.25)}