:root{
  --paper:#fbf6ec; --paper2:#f3ead8; --ink:#1f2a2e; --muted:#6b6f68; --line:#e4d8bf;
  --teal:#0f5e5a; --teal2:#14807a; --saffron:#f29d38; --saffron-soft:#fde7c8;
  --rose:#d9534f; --green:#2f8f4e; --card:#fffdf8; --shadow:0 1px 0 #e9dcc3, 0 6px 18px -10px rgba(60,40,10,.25);
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{overflow-x:hidden;font-family:Inter,"Noto Sans Telugu",system-ui,sans-serif;color:var(--ink);background:var(--paper);
  background-image:radial-gradient(circle at 1px 1px,rgba(120,90,40,.07) 1px,transparent 0);background-size:18px 18px;font-size:14.5px}
button{font:inherit;cursor:pointer}
.app{display:grid;grid-template-columns:250px minmax(0,1fr) 270px;grid-template-rows:auto 1fr;height:100vh}
header{grid-column:1/-1;display:flex;align-items:center;gap:14px;padding:10px 18px;background:var(--teal);color:#fff;border-bottom:4px solid var(--saffron)}
.logo{width:38px;height:38px;border-radius:10px;background:var(--saffron);display:grid;place-items:center;font-family:"Baloo Tammudu 2";font-weight:700;font-size:22px;color:var(--teal)}
.brand h1{margin:0;font-family:"Baloo Tammudu 2";font-size:21px;line-height:1}
.brand small{opacity:.8;font-size:12px}
header .sp{flex:1}
.me-btn{display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);color:#fff;border-radius:999px;padding:5px 12px 5px 5px}
.av{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:var(--saffron-soft);font-size:16px;flex:none;position:relative}
.av.sm{width:26px;height:26px;font-size:14px}
.dot{position:absolute;right:-1px;bottom:-1px;width:10px;height:10px;border-radius:50%;background:var(--green);border:2px solid var(--card)}
select.status{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.25);border-radius:8px;padding:6px 8px;font:inherit}
select.status option{color:#000}
.burger{display:none;background:none;border:0;color:#fff;font-size:22px}

aside{overflow:auto;padding:14px 12px;border-right:1px solid var(--line);background:rgba(251,246,236,.85)}
aside.right{border-right:0;border-left:1px solid var(--line)}
.sec{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:14px 8px 6px;font-weight:600}
.ch{display:flex;align-items:center;gap:8px;width:100%;text-align:left;border:0;background:none;padding:7px 10px;border-radius:8px;color:var(--ink)}
.ch:hover{background:var(--paper2)}
.ch.on{background:var(--teal);color:#fff}
.ch .e{width:20px;text-align:center}
.ch .n{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.badge{background:var(--saffron);color:#3a2400;border-radius:999px;font-size:11px;padding:1px 7px;font-weight:600}
.ch.on .badge{background:#fff}

.focus{margin:16px 4px 4px;padding:14px;border-radius:14px;background:var(--card);box-shadow:var(--shadow);border:1px solid var(--line);text-align:center}
.focus h3{margin:0 0 4px;font-family:"Baloo Tammudu 2";font-size:17px;color:var(--teal)}
.ring{font-family:"Baloo Tammudu 2";font-size:34px;color:var(--teal);margin:4px 0}
.focus p{margin:4px 0 10px;color:var(--muted);font-size:12.5px}
.btn{border:0;border-radius:9px;padding:8px 14px;background:var(--teal);color:#fff;font-weight:600}
.btn.alt{background:var(--saffron-soft);color:#6a3f00}
.btn.ghost{background:none;color:var(--teal);border:1px solid var(--line)}
.btn:disabled{opacity:.5;cursor:not-allowed}

main{display:flex;flex-direction:column;min-width:0;min-height:0}
.chhead{padding:12px 20px;border-bottom:1px solid var(--line);background:rgba(255,253,248,.9)}
.chhead h2{margin:0;font-family:"Baloo Tammudu 2";font-size:20px}
.chhead p{margin:2px 0 0;color:var(--muted);font-size:13px}
.filters{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}
.chip{border:1px solid var(--line);background:var(--card);border-radius:999px;padding:3px 10px;font-size:12.5px;color:var(--ink)}
.chip.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.pinned{margin-top:8px;padding:8px 12px;border-radius:10px;background:var(--saffron-soft);font-size:13px}
.feed{flex:1;overflow:auto;padding:16px 20px}
.notice{margin:0 20px;padding:9px 12px;border-radius:10px;background:#fff3f0;color:#8a2b20;font-size:13px;display:none}
.notice.show{display:block;margin-top:10px}
.day{text-align:center;color:var(--muted);font-size:12px;margin:14px 0 8px}
.msg{display:flex;gap:10px;padding:8px 10px;border-radius:12px;position:relative}
.msg:hover{background:rgba(242,157,56,.07)}
.msg .body{flex:1;min-width:0}
.msg .who{font-weight:600;font-size:13.5px}
.msg .who .meta{font-weight:400;color:var(--muted);font-size:12px;margin-left:6px}
.msg .txt{white-space:pre-wrap;word-wrap:break-word;line-height:1.5;margin-top:2px}
.tag{display:inline-block;font-size:11px;font-weight:600;padding:1px 8px;border-radius:999px;margin-right:6px;vertical-align:1px}
.tag.doubt{background:#fde2e1;color:#9b2c27}
.tag.solved{background:#dff3e5;color:#1f6b38}
.tag.tip{background:#e3f1ef;color:var(--teal)}
.tag.quiz{background:#ece6fb;color:#4b2fa0}
.card{margin-top:6px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:10px 12px;box-shadow:var(--shadow)}
.card.doubt{border-left:4px solid var(--rose)}
.card.doubt.solved{border-left-color:var(--green)}
.card.tip{border-left:4px solid var(--teal2);background:#f6fbfa}
.card.quiz{border-left:4px solid #6c4ad1}
.opt{display:block;width:100%;text-align:left;margin-top:6px;border:1px solid var(--line);background:#fff;border-radius:9px;padding:7px 10px;position:relative;overflow:hidden;color:var(--ink)}
.opt .bar{position:absolute;inset:0 auto 0 0;background:rgba(108,74,209,.12);z-index:0}
.opt span{position:relative;z-index:1}
.opt.correct{border-color:var(--green);background:#f1faf3}
.opt.correct .bar{background:rgba(47,143,78,.18)}
.opt.wrong{border-color:var(--rose)}
.opt:disabled{cursor:default}
.quote{border-left:3px solid var(--saffron);padding:2px 8px;margin:4px 0;color:var(--muted);font-size:12.5px;background:rgba(242,157,56,.06);border-radius:0 6px 6px 0}
.reacts{display:flex;gap:5px;margin-top:6px;flex-wrap:wrap}
.rx{border:1px solid var(--line);background:var(--card);border-radius:999px;padding:1px 8px;font-size:12.5px}
.rx.mine{border-color:var(--teal2);background:#e3f1ef}
.tools{position:absolute;right:8px;top:-12px;display:none;background:var(--card);border:1px solid var(--line);border-radius:9px;box-shadow:var(--shadow);padding:2px}
.msg:hover .tools{display:flex}
.tools button{border:0;background:none;padding:4px 6px;border-radius:6px;font-size:14px}
.tools button:hover{background:var(--paper2)}
.empty{text-align:center;color:var(--muted);margin-top:12vh}
.empty .big{font-size:46px}
.empty h3{font-family:"Baloo Tammudu 2";color:var(--ink);margin:6px 0}
.typing{height:20px;padding:0 22px;color:var(--muted);font-size:12.5px;font-style:italic}

.composer{border-top:1px solid var(--line);padding:10px 16px 14px;background:rgba(255,253,248,.95)}
.modes{display:flex;gap:6px;margin-bottom:8px;flex-wrap:wrap}
.mode{border:1px solid var(--line);background:#fff;border-radius:999px;padding:4px 12px;font-size:13px;color:var(--ink)}
.mode.on{background:var(--teal);color:#fff;border-color:var(--teal)}
.replying{display:none;font-size:12.5px;color:var(--muted);margin-bottom:6px}
.replying.show{display:flex;gap:8px;align-items:center}
.replying button{border:0;background:none;color:var(--rose)}
.row{display:flex;gap:8px;align-items:flex-end}
textarea{flex:1;resize:none;border:1px solid var(--line);border-radius:12px;padding:10px 12px;font:inherit;min-height:44px;max-height:140px;background:#fff;outline:none}
textarea:focus,input:focus,select:focus{border-color:var(--teal2);box-shadow:0 0 0 3px rgba(20,128,122,.12)}
.quizbox{display:none;margin-bottom:8px;gap:6px;grid-template-columns:1fr 1fr}
.quizbox.show{display:grid}
.quizbox label{display:flex;gap:6px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:9px;padding:4px 8px}
.quizbox input[type=text]{border:0;outline:none;flex:1;font:inherit;min-width:0;background:none;box-shadow:none}
.hint{font-size:12px;color:var(--muted);margin-top:6px}

.peer{display:flex;gap:9px;align-items:center;padding:6px 8px;border-radius:9px}
.peer:hover{background:var(--paper2)}
.peer .nm{font-weight:500;font-size:13.5px}
.peer .st{font-size:12px;color:var(--muted)}
.buddy{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:10px;margin:6px 2px;box-shadow:var(--shadow)}
.buddy .top{display:flex;gap:8px;align-items:center}
.buddy .nm{font-weight:600}
.buddy .sub{font-size:12px;color:var(--muted)}
.buddy .bio{font-size:12.5px;margin-top:6px}
.match{font-size:11px;background:var(--saffron-soft);color:#6a3f00;border-radius:999px;padding:1px 7px;margin-left:auto}
.buddy button{margin-top:8px;font-size:12.5px;padding:5px 10px}
.small{font-size:12.5px;color:var(--muted);padding:0 8px}

.modal{position:fixed;inset:0;background:rgba(20,30,30,.45);display:none;place-items:center;z-index:20;padding:16px}
.modal.show{display:grid}
.sheet{background:var(--card);border-radius:18px;max-width:440px;width:100%;padding:20px 22px;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.sheet h3{margin:0 0 4px;font-family:"Baloo Tammudu 2";font-size:22px;color:var(--teal)}
.sheet .f{margin-top:12px}
.sheet label{font-size:12.5px;font-weight:600;color:var(--muted);display:block;margin-bottom:4px}
.sheet input,.sheet select,.sheet textarea{width:100%;border:1px solid var(--line);border-radius:10px;padding:8px 10px;font:inherit;background:#fff;outline:none}
.avs{display:flex;flex-wrap:wrap;gap:6px}
.avs button{width:38px;height:38px;border-radius:50%;border:2px solid transparent;background:var(--saffron-soft);font-size:19px}
.avs button.on{border-color:var(--teal)}
.sheet .acts{display:flex;justify-content:flex-end;gap:8px;margin-top:16px}
.rules{font-size:13px;line-height:1.6;padding-left:18px;margin:8px 0}
.toast{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);background:var(--ink);color:#fff;padding:8px 16px;border-radius:999px;font-size:13px;opacity:0;transition:.25s;pointer-events:none;z-index:30}
.toast.show{opacity:1}

@media (max-width:1050px){.app{grid-template-columns:230px minmax(0,1fr)}aside.right{display:none}aside.right.open{display:block;position:fixed;right:0;top:62px;bottom:0;width:280px;z-index:10;background:var(--paper);box-shadow:-10px 0 30px rgba(0,0,0,.15)}.peoplebtn{display:inline-block!important}}
@media (max-width:720px){.app{grid-template-columns:minmax(0,1fr)}header{gap:8px;padding:8px 10px}.brand{flex:1;min-width:0}.brand h1{font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}header .sp{display:none}.logo{width:32px;height:32px;font-size:18px}.me-btn{padding:3px}.chhead{padding:10px 14px}.feed{padding:12px 10px}.composer{padding:8px 10px 12px}.mode{padding:3px 9px;font-size:12.5px}.quizbox{grid-template-columns:1fr}aside.left.open,aside.right.open{top:56px}aside.left{display:none}aside.left.open{display:block;position:fixed;left:0;top:62px;bottom:0;width:260px;z-index:10;background:var(--paper);box-shadow:10px 0 30px rgba(0,0,0,.15)}.burger{display:block}.brand small{display:none}select.status{max-width:110px}.me-btn .lbl{display:none}}
.peoplebtn{display:none;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);color:#fff;border-radius:8px;padding:6px 10px}

.older{display:block;margin:4px auto 12px;font-size:12.5px}
.loginwall{display:grid;place-items:center;height:100vh;padding:20px;text-align:center}
.loginwall .sheet h3{font-size:26px}
.backlink{color:#fff;opacity:.85;font-size:12.5px;text-decoration:none;border:1px solid rgba(255,255,255,.25);border-radius:8px;padding:6px 10px}
.backlink:hover{opacity:1}
.repflag{font-size:11px;color:#9b2c27;background:#fde2e1;border-radius:999px;padding:0 6px;margin-left:6px}
.conn{position:fixed;top:0;left:50%;transform:translateX(-50%);z-index:40;border-radius:0 0 8px 8px;font-size:12px;color:#fff;background:var(--rose);padding:4px 14px;display:none}
.conn.show{display:block}
@media (max-width:720px){.backlink{display:none}}