:root{
  color-scheme:light;
  --bg:#fff; --card:#fff; --text:#050505; --muted:#65676b; --line:#e4e6eb; --soft:#f0f2f5; --sep:#f0f2f5; --cover:#ccd0d5;
  --brand:#0b6b4f; --brand-d:#064a37; --brand-l:#e1f1e8; --gold:#d4af37; --gold-d:#a8840f; --gold-l:#fbf0c4;
  --danger:#a8840f; --me:#0b6b4f; --tabon:#0b6b4f; --h2:#0b6b4f;
}
:root[data-theme="dark"]{
  color-scheme:dark;
  --bg:#18191a; --card:#242526; --text:#e4e6eb; --muted:#b0b3b8; --line:#3a3b3c; --soft:#3a3b3c; --sep:#18191a; --cover:#3a3b3c;
  --brand:#0f7a58; --brand-l:#1a3328; --gold:#e3c25a; --gold-d:#e3c25a; --gold-l:#3a3210; --danger:#e3c25a; --me:#0f7a58; --tabon:#e3c25a; --h2:#e3c25a;
}
[hidden]{display:none!important}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--text);font:16px/1.4 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;-webkit-text-size-adjust:100%}
#app{max-width:640px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column;background:var(--bg)}
.boot{text-align:center;color:var(--muted);margin-top:30vh}
button,input,textarea,select{font:inherit;color:inherit}
button{-webkit-tap-highlight-color:transparent}
.ico{display:inline-flex;vertical-align:middle}.ico svg{display:block}

/* header + tabs */
.top{position:sticky;top:0;z-index:5;background:var(--card);color:var(--text);padding-top:env(safe-area-inset-top);border-bottom:1px solid var(--line)}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:8px 12px 0 16px}
.logo{font-size:27px;font-weight:800;letter-spacing:-.5px;cursor:pointer;color:var(--brand)}
:root[data-theme="dark"] .logo{color:var(--text)}
.logo b{color:var(--gold-d)}
.tools{display:flex;gap:8px}
.tool{width:38px;height:38px;border-radius:50%;border:0;background:var(--soft);color:var(--text);display:flex;align-items:center;justify-content:center;cursor:pointer}
.tabs{display:flex}
.tabs button{flex:1;border:0;background:none;color:var(--muted);padding:8px 0 7px;border-bottom:3px solid transparent;margin-bottom:-1px;cursor:pointer}
.tabs button.on{color:var(--tabon);border-bottom-color:var(--gold)}
.tabs button.on .ico svg{fill:currentColor}
.tabi{position:relative;display:inline-block}
.bdg{position:absolute;top:-5px;left:56%;background:var(--gold);color:#3a2f04;font:800 10px/16px system-ui;font-style:normal;border-radius:8px;min-width:16px;padding:0 4px;text-align:center}
.in-chat .top{display:none}
main{flex:1;padding:0 0 30px}
.pad{padding:0 14px}

/* cards: flat white panels split by a soft band */
.card{background:var(--card);border-bottom:8px solid var(--sep);padding:12px 14px}
.btn{background:var(--brand);color:#fff;border:0;border-radius:8px;padding:9px 16px;font-weight:700;cursor:pointer}
.btn:disabled{opacity:.6}
.btn.ghost{background:var(--soft);color:var(--text)}
.btn.gold{background:var(--gold);color:#3a2f04}
.btn.danger{background:none;color:var(--danger)}
.btn.wide{width:100%;margin:4px 0 10px}
.btn .ico{margin-right:2px}
input,textarea,select{width:100%;padding:10px 12px;border:0;border-radius:8px;background:var(--soft);margin:0 0 8px;outline:none}
input:focus,textarea:focus{box-shadow:0 0 0 2px var(--gold)}
textarea{resize:none}
.pill{border-radius:22px;padding:10px 16px}
label{display:block;font-size:13px;color:var(--muted);margin:2px 0 3px}
.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.row .grow,.grow{flex:1;min-width:0}
.hint{font-size:13px;color:var(--muted)}
.empty{text-align:center;color:var(--muted);padding:24px 8px}
.err{text-align:center;padding:30px 12px;color:var(--muted)}
.tap{cursor:pointer}
h2{font-size:15px;margin:14px 14px 8px;color:var(--h2)}
h2.big{font-size:26px;margin:12px 14px 8px;color:var(--text)}

/* avatars (letter, or the uploaded picture on top of it) */
.av{position:relative;overflow:hidden;width:40px;height:40px;border-radius:50%;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;flex:none;box-shadow:0 0 0 2px var(--gold)}
.av img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.av.big{width:112px;height:112px;font-size:46px;border:4px solid var(--card);box-shadow:0 0 0 3px var(--gold)}
.av.grp{background:var(--gold-l);color:var(--gold-d)}

/* feed */
.compose{display:flex;gap:10px;align-items:flex-start;margin-bottom:6px}
.compose textarea{margin:0;border-radius:20px;padding:10px 14px;min-height:42px;line-height:1.4;overflow-y:auto;display:block}
.thumb{position:relative;margin:6px 0 2px;display:inline-block;max-width:100%}
.thumb img{display:block;max-width:100%;max-height:220px;border-radius:10px}
.thumb .x{position:absolute;top:6px;right:6px;width:28px;height:28px;border-radius:50%;border:0;background:rgba(0,0,0,.6);color:#fff;cursor:pointer}
.who{display:flex;gap:10px;align-items:center;margin-bottom:8px}
.who small{display:block;color:var(--muted);font-size:12px}
.body{white-space:pre-wrap;word-wrap:break-word;margin:4px 0 8px;font-size:16px}
.pimg{display:block;width:calc(100% + 28px);margin:6px -14px;max-height:80vh;object-fit:contain;background:var(--soft);cursor:pointer}
.act{border:0;background:none;color:var(--muted);padding:6px 10px;font-size:20px;cursor:pointer}
.counts{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:14px;min-height:22px}
.lc{display:flex;align-items:center;gap:5px}
.lcb{width:20px;height:20px;border-radius:50%;background:var(--brand);color:#fff;display:inline-flex;align-items:center;justify-content:center}
.lcb svg{fill:currentColor}
.link{cursor:pointer}
.fbacts{display:flex;border-top:1px solid var(--line);margin-top:6px;padding-top:2px}
.fbact{flex:1;border:0;background:none;color:var(--muted);padding:9px 0;font-weight:600;font-size:14px;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:6px}
.fbact.on{color:var(--gold-d)}.fbact.on .ico svg{fill:currentColor}
.comments{border-top:1px solid var(--line);margin-top:4px;padding-top:10px}
.cmrow{display:flex;gap:8px;margin:0 0 10px}
.cmrow .av,.comments .row .av{width:32px;height:32px;font-size:13px;box-shadow:none}
.cmb{background:var(--soft);border-radius:16px;padding:7px 12px;font-size:15px}
.cmb b{display:block;font-size:13px}
.cmt{color:var(--muted);font-size:11px;margin-left:10px}
.comments form input{margin:0}
.seg{display:flex;gap:6px;margin:0 0 8px;padding:0 14px}
.card + .seg,.seg:first-child{margin-top:8px}
.seg button{flex:1;border:0;background:var(--soft);color:var(--text);padding:9px;border-radius:20px;font-weight:600;cursor:pointer}
.seg button.on{background:var(--brand);color:#fff;box-shadow:inset 0 -3px 0 var(--gold)}

/* lists (chats, alerts) */
.list .item{display:flex;gap:12px;align-items:center;padding:10px 14px;background:var(--card);border:0;border-bottom:1px solid var(--line);cursor:pointer;width:100%;text-align:left}
.list .item .av{width:50px;height:50px;font-size:20px}
.item small{display:block;color:var(--muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.item .nm{font-weight:600}
.item.unread .nm{font-weight:800}.item.unread small{color:var(--text);font-weight:600}
.item .meta{text-align:right;flex:none}
.dot{display:block;width:11px;height:11px;border-radius:50%;background:var(--gold);margin:5px 0 0 auto}
#main > .pad{margin-bottom:8px}

/* chat screen */
.chat-head{position:sticky;top:0;background:var(--card);z-index:4;display:flex;gap:10px;align-items:center;padding:calc(8px + env(safe-area-inset-top)) 12px 8px;border-bottom:1px solid var(--line)}
.chat-head .hint{display:block}
.back{border:0;background:var(--soft);color:var(--text);width:36px;height:36px;border-radius:50%;font-size:24px;line-height:1;cursor:pointer;flex:none}
.msgs{min-height:60vh;display:flex;flex-direction:column;gap:4px;padding:12px 12px 76px}
.msg{max-width:78%;padding:8px 13px;border-radius:20px;background:var(--soft);word-wrap:break-word;white-space:pre-wrap;align-self:flex-start}
.msg.me{align-self:flex-end;background:var(--me);color:#fff}
.msg.pic{padding:4px}
.msg.pic small{padding:0 8px 2px}
.msg.emo{background:none;color:inherit;font-size:36px;line-height:1.2;padding:0 4px}
.msg.emo small{font-size:10px;color:var(--muted)}
.mimg{display:block;max-width:100%;max-height:300px;border-radius:16px;cursor:pointer}
.msg small{display:block;color:var(--muted);font-size:10px;margin-top:2px}
.msg.me small{color:rgba(255,255,255,.75)}
.mrow{display:flex;gap:6px;align-items:flex-end;max-width:90%}
.mrow .av{width:28px;height:28px;font-size:12px;box-shadow:none}
.who2{font-weight:700;color:var(--gold-d)!important}
.chat-in{position:fixed;bottom:0;left:0;right:0;max-width:640px;margin:0 auto;display:flex;gap:6px;align-items:center;padding:8px 10px calc(8px + env(safe-area-inset-bottom));background:var(--card);border-top:1px solid var(--line);z-index:6}
.chat-in input{margin:0}
.cbtn{flex:none;width:38px;height:38px;border-radius:50%;border:0;background:none;color:var(--brand);display:flex;align-items:center;justify-content:center;cursor:pointer}
:root[data-theme="dark"] .cbtn{color:var(--gold)}
.btn.send{border-radius:50%;width:42px;height:42px;padding:0;background:var(--gold);color:#3a2f04;flex:none}
.emoji{position:fixed;left:0;right:0;bottom:calc(58px + env(safe-area-inset-bottom));max-width:640px;margin:0 auto;background:var(--card);border-top:1px solid var(--line);padding:8px;display:grid;grid-template-columns:repeat(8,1fr);gap:2px;max-height:210px;overflow-y:auto;z-index:6}
.emoji button{border:0;background:none;font-size:26px;line-height:1.3;padding:4px 0;cursor:pointer}

/* profile (Facebook-style) */
.prof{padding:0}
.cover{height:180px;background:var(--cover);position:relative;overflow:hidden}
.cover img{display:block;width:100%;height:100%;object-fit:cover;cursor:pointer}
.backc{position:absolute;top:10px;left:10px;background:rgba(0,0,0,.4);color:#fff;z-index:3}
.cam{position:absolute;z-index:3;width:36px;height:36px;border-radius:50%;border:0;background:#111;color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer}
.cam.cov{right:12px;bottom:12px}
.pav .cam{right:-2px;bottom:2px;border:3px solid var(--card)}
.pinfo{padding:0 14px;text-align:center}
.pav{position:relative;z-index:2;width:112px;height:112px;margin:-60px auto 0}
.prof h1{margin:8px 0 2px;font-size:26px}
.fcount{margin:0 0 6px;font-size:15px}
.bio{margin:2px 0 10px}
.acts2{padding-bottom:14px;justify-content:center}
.acts2 .grow{min-width:140px}
.det{display:flex;gap:12px;align-items:center;padding:7px 0;color:var(--text)}
.det .ico{color:var(--muted)}
.frow{display:flex;gap:10px;margin-top:10px;justify-content:space-between}
.fi{flex:1;min-width:0;text-align:center}
.fi .av{width:64px;height:64px;font-size:26px;margin:0 auto 4px;box-shadow:none}
.fi small{display:block;font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.link2{color:var(--brand);font-weight:600;cursor:pointer}
:root[data-theme="dark"] .link2{color:var(--gold)}

/* settings switch */
.sw{flex:none;width:48px;height:28px;border-radius:14px;border:0;background:#b8bcc2;position:relative;cursor:pointer;padding:0;transition:background .15s}
.sw i{position:absolute;top:3px;left:3px;width:22px;height:22px;border-radius:50%;background:#fff;transition:transform .15s}
.sw.on{background:var(--brand)}
.sw.on i{transform:translateX(20px)}

/* picture viewer */
.lb{position:fixed;inset:0;background:rgba(0,0,0,.92);z-index:30;display:flex;align-items:center;justify-content:center;padding:10px}
.lb img{max-width:100%;max-height:100%;object-fit:contain}

/* auth + misc */
.auth{padding:28px 16px}
.auth h1{margin:0 0 4px;font-size:32px;color:var(--brand)}
:root[data-theme="dark"] .auth h1{color:var(--text)}
.auth h1 b{color:var(--gold-d)}
.auth .card{border-radius:12px;border:1px solid var(--line)}
.toast{position:fixed;left:50%;bottom:90px;transform:translateX(-50%);background:#222;color:#fff;padding:10px 16px;border-radius:10px;z-index:40;max-width:90%;text-align:center;font-size:14px}

/* settings rows */
.srow{display:flex;gap:12px;align-items:center;padding:10px 0}
.srow + .srow{border-top:1px solid var(--line)}
.srow .av{width:42px;height:42px;font-size:17px}
.card > b{display:block;margin-bottom:4px}
.card .seg{padding:0;margin:8px 0 6px}
.card .btn.wide{margin:8px 0 0}

/* reactions */
.fbacts{position:relative}
.fbact{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;touch-action:manipulation}
.fbact .rem{font-size:19px;line-height:1}
.rst{display:inline-flex;padding-right:6px}
.rst i{width:20px;height:20px;border-radius:50%;background:var(--card);box-shadow:0 0 0 1.5px var(--line);display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-style:normal;margin-right:-6px}
.rpick{position:absolute;left:4px;bottom:100%;margin-bottom:6px;display:flex;gap:2px;background:var(--card);border:1px solid var(--line);border-radius:32px;padding:6px 8px;box-shadow:0 6px 22px rgba(0,0,0,.2);z-index:30;animation:rpop .14s ease-out}
.rpick button{border:0;background:none;font-size:28px;line-height:1;padding:3px 5px;border-radius:50%;cursor:pointer;transition:transform .12s}
.rpick button:hover,.rpick button:active{transform:scale(1.3) translateY(-3px)}
.rpick button.sel{background:var(--soft)}
@keyframes rpop{from{opacity:0;transform:translateY(6px) scale(.94)}to{opacity:1;transform:none}}
/* support chat */
.av.sup{background:var(--gold);color:#fff;display:flex;align-items:center;justify-content:center;border-radius:50%}
.av.sup svg{stroke:#fff}
.msg.hello{align-self:flex-start;background:var(--soft);color:var(--text)}