/* Mustaqil sahifa uchun asosiy sozlamalar (artifact muhitida bu kerak emas) */
html{color-scheme:light;-webkit-text-size-adjust:100%}
body{margin:0}
img{max-width:100%}
[hidden]{display:none!important}
/* Layout: ikki ustunli o‘quv maydoni — chapda darslar yo‘li, o‘ngda dars, kod muharriri va natija. Telefonda darslar ro‘yxati yig‘iladi. */
:root{
  --bg:#F2F4FA; --surface:#FFFFFF; --surface-2:#EBEFFA; --ink:#101528; --muted:#59628A; --line:#DBE0F1;
  --accent:#2747D8; --accent-ink:#FFFFFF; --accent-soft:#E2E8FF; --gold:#E39B00;
  --ok:#17804A; --ok-soft:#DDF3E6; --bad:#C8372D; --bad-soft:#FBE3E0;
  --code-bg:#10162B; --code-ink:#DDE5FF; --code-dim:#7482B8;
  --shadow:0 1px 2px rgba(16,21,40,.05),0 8px 24px -12px rgba(16,21,40,.18);
  --f-display:'Unbounded','Segoe UI',system-ui,sans-serif;
  --f-body:'Manrope','Segoe UI',system-ui,-apple-system,sans-serif;
  --f-mono:'JetBrains Mono',ui-monospace,Menlo,Consolas,monospace;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0A0E1D; --surface:#121833; --surface-2:#1A2145; --ink:#E8ECFF; --muted:#98A2CC; --line:#252D55;
    --accent:#8097FF; --accent-ink:#0A0E1D; --accent-soft:#1F2858; --gold:#F5C242;
    --ok:#4CCB84; --ok-soft:#12301F; --bad:#FF7A70; --bad-soft:#3A1B19;
    --code-bg:#070B17; --code-ink:#DDE5FF; --code-dim:#6E7BB0; --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 30px -14px rgba(0,0,0,.6); color-scheme:dark;
  }
}
:root[data-theme="dark"]{
    --bg:#0A0E1D; --surface:#121833; --surface-2:#1A2145; --ink:#E8ECFF; --muted:#98A2CC; --line:#252D55;
    --accent:#8097FF; --accent-ink:#0A0E1D; --accent-soft:#1F2858; --gold:#F5C242;
    --ok:#4CCB84; --ok-soft:#12301F; --bad:#FF7A70; --bad-soft:#3A1B19;
    --code-bg:#070B17; --code-ink:#DDE5FF; --code-dim:#6E7BB0; --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 30px -14px rgba(0,0,0,.6); color-scheme:dark;
}
*{box-sizing:border-box}
body{
  background:var(--bg); color:var(--ink); font-family:var(--f-body); font-size:16px; line-height:1.55;
  padding-block:16px 40px;
  padding-left:max(16px, env(safe-area-inset-left, 0px));
  padding-right:max(16px, env(safe-area-inset-right, 0px));
}
button{font:inherit;color:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.wrap{max-width:1180px;margin:0 auto}
h1,h2{margin:0}
pre{margin:0;font-family:var(--f-mono)}

/* Yuqori panel */
.top{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 16px;margin-bottom:16px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--f-display);font-weight:700;font-size:19px;letter-spacing:-.01em}
.brand svg{width:30px;height:30px;flex:none}
.top-right{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.chip{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border:1px solid var(--line);background:var(--surface);border-radius:999px;font-size:13px;font-weight:500;font-variant-numeric:tabular-nums}
.chip i{width:8px;height:8px;border-radius:50%;background:var(--gold);display:inline-block}
.chip.streak i{background:var(--accent)}
.lang{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--surface)}
.lang button{border:0;background:transparent;padding:5px 11px;font-size:13px;font-weight:600;letter-spacing:.04em;color:var(--muted)}
.lang button[aria-pressed="true"]{background:var(--accent);color:var(--accent-ink)}

/* Joylashuv */
.layout{display:grid;grid-template-columns:1fr;gap:16px;align-items:start}
.menu-btn{display:flex;justify-content:space-between;align-items:center;gap:10px;width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:10px;background:var(--surface);text-align:left;font-weight:500}
.menu-btn span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.menu-btn small{color:var(--muted);font-weight:400;font-size:13px;flex:none}
.side{display:none;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px}
.side.open{display:block}
@media (min-width:900px){
  .layout{grid-template-columns:300px minmax(0,1fr)}
  .menu-btn{display:none}
  .side{display:block;position:sticky;top:16px;max-height:calc(100vh - 32px);overflow:auto}
}

/* Yon panel */
.prog{margin-bottom:14px}
.prog-row{display:flex;justify-content:space-between;font-size:13px;color:var(--muted);margin-bottom:6px;font-variant-numeric:tabular-nums}
.bar{height:6px;border-radius:99px;background:var(--surface-2);border:1px solid var(--line);overflow:hidden}
.bar b{display:block;height:100%;background:var(--accent);border-radius:99px;transition:width .3s}
.lvl{display:flex;justify-content:space-between;align-items:baseline;margin:16px 0 6px;font-family:var(--f-display);font-size:12px;font-weight:500;letter-spacing:.02em;text-transform:uppercase}
.lvl small{font-family:var(--f-body);font-size:12px;color:var(--muted);text-transform:none;letter-spacing:0;font-variant-numeric:tabular-nums}
.les{display:flex;align-items:center;gap:10px;width:100%;border:0;background:transparent;padding:7px 8px;border-radius:8px;text-align:left;font-size:14px;line-height:1.3}
.les:hover{background:var(--surface-2)}
.les[aria-current="true"]{background:var(--accent-soft);font-weight:600}
.les .n{flex:none;width:24px;height:24px;border-radius:50%;border:1.5px solid var(--line);display:grid;place-items:center;font-size:11px;font-weight:600;color:var(--muted);font-variant-numeric:tabular-nums}
.les.done .n{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.les .n svg{width:12px;height:12px}
.road{margin-top:18px;padding-top:14px;border-top:1px solid var(--line)}
.road h3{margin:0 0 8px;font-family:var(--f-display);font-size:12px;font-weight:500;text-transform:uppercase}
.road li{list-style:none;display:flex;gap:8px;align-items:baseline;font-size:13px;color:var(--muted);padding:3px 0}
.road ul{margin:0;padding:0}
.road em{font-style:normal;font-size:11px;border:1px solid var(--line);border-radius:99px;padding:0 7px;flex:none}

/* Dars maydoni */
.main{display:grid;gap:14px;min-width:0}
.crumb{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.main h1{font-family:var(--f-display);font-weight:700;font-size:clamp(22px,4.6vw,30px);line-height:1.2;letter-spacing:-.015em;text-wrap:balance}
.card{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px;min-width:0}
.card h2{font-family:var(--f-display);font-size:12px;font-weight:500;text-transform:uppercase;letter-spacing:.03em;color:var(--muted);margin-bottom:8px}
.card p{margin:0 0 10px;max-width:68ch}
.card p:last-child{margin-bottom:0}
.cb{margin-top:12px;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--code-bg)}
.cb-h{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:6px 8px 6px 12px;border-bottom:1px solid var(--line);font-size:12px;color:var(--muted)}
.cb pre{padding:12px;overflow-x:auto;font-size:14px;line-height:1.55;color:var(--code-ink)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:8px 14px;font-weight:600;font-size:14px}
.btn:hover{border-color:var(--accent)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.primary:hover{filter:brightness(1.06)}
.btn.sm{padding:3px 9px;font-size:12px;font-weight:500}
.btn[disabled]{opacity:.55;cursor:wait}
.sample{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin-top:12px}
.sample div{min-width:0}
.sample b{display:block;font-size:12px;font-weight:500;color:var(--muted);margin-bottom:4px}
.sample pre{background:var(--surface-2);border:1px solid var(--line);border-radius:6px;padding:8px 10px;font-size:13px;min-height:36px;overflow-x:auto;white-space:pre}

/* Muharrir */
.ed{display:grid;grid-template-columns:auto minmax(0,1fr);border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--code-bg)}
.gut{padding:12px 8px 12px 12px;text-align:right;color:var(--muted);font:15px/22px var(--f-mono);white-space:pre;overflow:hidden;user-select:none;border-right:1px solid var(--line);opacity:.8}
#code{display:block;width:100%;border:0;outline:0;resize:vertical;background:transparent;color:var(--code-ink);font:15px/22px var(--f-mono);padding:12px;white-space:pre;overflow:auto;tab-size:4;min-height:220px}
.ed:focus-within{border-color:var(--accent)}
.stdin{margin-top:12px}
.stdin label{display:block;font-size:12px;color:var(--muted);margin-bottom:4px}
#stdin{width:100%;border:1px solid var(--line);border-radius:8px;background:var(--code-bg);color:var(--code-ink);font:14px/20px var(--f-mono);padding:8px 10px;resize:vertical;min-height:40px}
.actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}

/* Natija */
.res{margin-top:14px;display:grid;gap:10px}
.out{border:1px solid var(--line);border-radius:8px;background:var(--code-bg)}
.out .cb-h{border-bottom:1px solid var(--line)}
.out pre{padding:10px 12px;font-size:14px;color:var(--code-ink);white-space:pre-wrap;overflow-wrap:anywhere;min-height:20px}
.err{color:var(--bad)}
.banner{border-radius:10px;padding:12px 14px;font-weight:500;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px}
.banner.ok{background:var(--ok-soft);color:var(--ok)}
.banner.bad{background:var(--bad-soft);color:var(--bad)}
.banner .btn{color:var(--ink)}
.trow{border:1px solid var(--line);border-radius:8px;padding:8px 10px;display:grid;gap:8px;min-width:0}
.trow-h{display:flex;align-items:center;gap:10px;font-size:14px}
.pill{font-size:12px;font-weight:600;border-radius:99px;padding:1px 9px}
.trow.ok .pill{background:var(--ok-soft);color:var(--ok)}
.trow.bad .pill{background:var(--bad-soft);color:var(--bad)}
.trow .sample{margin-top:0}
.pager{display:flex;justify-content:space-between;gap:10px}
.muted{color:var(--muted)}
.small{font-size:13px}
.sub{margin:14px 0 6px;font-size:13px;font-weight:600;color:var(--muted)}
.reqs{margin:0;padding-left:20px;display:grid;gap:4px}
.prev{display:block;width:100%;height:240px;border:1px solid var(--line);border-radius:8px;background:#fff;color-scheme:light}
.tabs{display:grid;grid-template-columns:repeat(2,1fr);gap:6px;margin-bottom:14px}
.tabs button{border:1px solid var(--line);background:var(--surface-2);border-radius:8px;padding:8px 10px;font-weight:600;font-size:13px;display:flex;flex-direction:column;align-items:flex-start;gap:0;line-height:1.3;min-width:0}
.tabs button small{font-weight:400;font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.tabs button[aria-selected="true"]{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.tabs button[aria-selected="true"] small{color:var(--accent-ink);opacity:.85}
.links{margin:0 0 8px;padding:0;list-style:none;display:grid;gap:6px}
.links a{color:var(--accent);font-weight:500;text-decoration:underline;text-underline-offset:3px;overflow-wrap:anywhere}
@media (prefers-reduced-motion: reduce){.bar b{transition:none}}

.tip{margin:0;padding:8px 12px;font-size:14px;background:var(--surface-2);border-left:3px solid var(--accent);border-radius:0 6px 6px 0}
.out .tip{margin:0 10px 10px}
.trow .tip{margin:0}
.hintp{margin:0;padding:10px 12px;font-size:15px}
.rq{margin-top:14px}
.ra{width:100%;border:1px solid var(--line);border-radius:8px;background:var(--code-bg);color:var(--code-ink);font:14px/20px var(--f-mono);padding:8px 10px;resize:vertical}
.btn-chip{cursor:pointer;color:var(--ink);font-family:inherit}
.btn-chip:hover{border-color:var(--accent)}
.btn-chip.pending{border-color:var(--accent);background:var(--accent-soft)}
.btn-chip.pending::after{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent)}

.keys{display:flex;gap:6px;overflow-x:auto;padding:8px 0 2px;-webkit-overflow-scrolling:touch}
.key{flex:0 0 auto;min-width:40px;height:38px;padding:0 10px;border:1px solid var(--line);background:var(--surface-2);border-radius:8px;font-family:"JetBrains Mono",monospace;font-size:15px}
.key:active{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.badges{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:8px}
.badge{border:1px dashed var(--line);border-radius:10px;padding:10px;font-size:13px;color:var(--muted);display:flex;flex-direction:column;gap:2px}
.badge.on{border:1px solid var(--accent);color:var(--ink);background:var(--surface-2)}
.badge .bi{font-size:18px}
.cert{margin:10px 0}
.cname{border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:8px;padding:6px 10px;font-size:14px;min-width:0;flex:1 1 140px}
.banner.adv{background:var(--surface-2);color:var(--ink);margin-top:10px;border:1px solid var(--line)}

/* ===== Zamonaviy ko'rinish ===== */
body{font-size:16px;line-height:1.6;letter-spacing:-.003em}
.top{background:color-mix(in srgb,var(--surface) 78%,transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:16px;padding:10px 14px;box-shadow:var(--shadow);z-index:30}
@media (min-width:900px){
  .top{position:sticky;top:12px}
  .side{top:88px;max-height:calc(100vh - 104px)}
}
.brand{font-size:18px}
.chip{background:var(--surface-2);border-color:transparent;padding:5px 11px;font-weight:600}
.btn-chip{cursor:pointer;transition:background .15s,border-color .15s}
.btn-chip:hover{border-color:var(--accent);background:var(--surface)}
.lang{background:var(--surface-2);border-color:transparent;border-radius:999px;padding:2px}
.lang button{border-radius:999px;padding:4px 11px}
.side,.card,.menu-btn{border-radius:18px;box-shadow:var(--shadow)}
.side{padding:16px}
.card{padding:20px 22px}
.card h2{font-size:15px;font-weight:600;text-transform:none;letter-spacing:-.005em;color:var(--ink);margin-bottom:10px}
.main h1{font-size:clamp(24px,5vw,34px);line-height:1.15}
.crumb{font-weight:500}
.btn{border-radius:12px;padding:9px 16px;transition:transform .12s,box-shadow .15s,border-color .15s,filter .15s}
.btn:active{transform:translateY(1px)}
.btn.primary{box-shadow:0 6px 16px -8px var(--accent)}
.btn.sm{padding:4px 11px;border-radius:9px}
.cb,.ed,.out{border-radius:12px;border-color:transparent;background:var(--code-bg)}
.cb-h{border-bottom-color:rgba(255,255,255,.08);color:var(--code-dim)}
.cb-h .btn{background:rgba(255,255,255,.08);border-color:transparent;color:var(--code-ink)}
.cb pre,.out pre{color:var(--code-ink)}
.gut{color:var(--code-dim);border-right-color:rgba(255,255,255,.08)}
#code{color:var(--code-ink);caret-color:var(--accent)}
.ed{border:1px solid transparent}
.ed:focus-within{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
#stdin{border-color:transparent;border-radius:12px}
.sample pre{border-radius:10px;border-color:transparent}
.banner{border-radius:14px}
.trow{border-radius:12px}
.tabs{background:var(--surface-2);padding:4px;border-radius:14px;gap:4px}
.tabs button{border:0;background:transparent;border-radius:10px;padding:8px 10px;transition:background .15s}
.tabs button:hover{background:var(--surface)}
.tabs button[aria-selected="true"]{background:var(--accent);box-shadow:0 6px 14px -8px var(--accent)}
.bar{height:8px;border:0;background:var(--surface-2)}
.bar b{transition:width .5s cubic-bezier(.2,.8,.2,1)}
.lvl{font-size:13px;text-transform:none;letter-spacing:-.005em;margin:20px 0 8px;font-weight:600}
.keys{padding:10px 0 4px}
.key{background:var(--surface);border-radius:10px;box-shadow:var(--shadow);font-size:15px}
.badge{border-radius:14px}
.badge.on{background:var(--accent-soft);border-color:transparent;color:var(--ink)}
.badge.on .bi{color:var(--gold)}
/* Yo'l: darslar ro'yxati ulangan nuqtalar ko'rinishida */
.les{position:relative;padding:9px 10px;border-radius:12px;gap:12px;transition:background .15s}
.les .n{position:relative;z-index:1;width:26px;height:26px;background:var(--surface);border-width:2px}
.les::after{content:"";position:absolute;left:22px;top:50%;width:2px;height:100%;background:var(--line);z-index:0}
.les.done::after{background:var(--accent)}
.les:last-child::after,.les:has(+ .lvl)::after{display:none}
.les.done .n{background:var(--accent);border-color:var(--accent)}
.les[aria-current="true"]{background:var(--accent-soft)}
.les[aria-current="true"] .n{border-color:var(--accent);color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.les[aria-current="true"].done .n{color:var(--accent-ink)}
.road li em{border-radius:99px}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
.tabs button:last-child:nth-child(odd){grid-column:1/-1}
@media (hover:hover) and (pointer:fine){.keys{display:none}}
@media (max-width:600px){
  .card{padding:16px}
  .top{padding:10px 12px;gap:8px}
  .top-right{gap:6px}
  .chip{padding:4px 9px;font-size:12.5px}
}

.sqlt{overflow-x:auto;border:1px solid var(--line);border-radius:12px;margin:4px 0 8px}
.sqlt table{border-collapse:collapse;font:13px var(--f-mono);min-width:100%}
.sqlt th,.sqlt td{padding:5px 10px;text-align:left;white-space:nowrap;border-bottom:1px solid var(--line)}
.sqlt th{background:var(--surface-2);font-weight:600}
.sqlt tr:last-child td{border-bottom:0}
.mq{border:1px solid var(--line);border-radius:14px;padding:12px 14px;margin:0 0 12px;min-width:0}
.mq legend{font-weight:600;padding:0 6px}
.mo{display:flex;gap:10px;align-items:flex-start;padding:7px 4px;cursor:pointer;border-radius:8px}
.mo:hover{background:var(--surface-2)}
.mo input{margin-top:5px;accent-color:var(--accent)}
.mq.okq{border-color:var(--ok);background:var(--ok-soft)}
.mq.badq{border-color:var(--bad);background:var(--bad-soft)}
.mx{margin-top:6px;font-size:14px}
.gl{padding:10px 0;border-bottom:1px solid var(--line,#e5e7eb)}.gl p{margin:4px 0 0}.gl .muted{opacity:.65;font-size:.85em}
#glossQ{width:100%;margin-bottom:8px;padding:10px;border-radius:10px;border:1px solid var(--line,#ccd);font:inherit}
.grow{flex:1}.cb-h{display:flex;align-items:center;gap:8px}
.trace .tbar{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.tcode{background:#14181f;color:#e6edf3;border-radius:10px;padding:8px 0;font:13px/1.5 ui-monospace,Menlo,Consolas,monospace;overflow:auto}
.tl{display:flex;gap:10px;padding:1px 12px;white-space:pre}.tl i{opacity:.45;min-width:1.5em;text-align:right;font-style:normal}.tl.cur{background:#2b4a7a}
.tctl{display:flex;align-items:center;gap:8px;margin:10px 0}.tctl input{flex:1}
.tf{margin:6px 0}.tf table{border-collapse:collapse;margin-top:4px}.tf td{border:1px solid var(--line,#ccd);padding:2px 10px;font:13px ui-monospace,Menlo,Consolas,monospace}
.tout{background:#14181f;color:#e6edf3;border-radius:10px;padding:8px 12px;min-height:1.5em;white-space:pre-wrap}

.srch{padding:6px 2px}.srch .inp{width:100%;box-sizing:border-box}
.les .tk{margin-left:auto;font-size:.72em;opacity:.65;white-space:nowrap}
.les.fav-row .n{color:#e0a800}
body.dys{font-family:Verdana,Tahoma,"Trebuchet MS",sans-serif;letter-spacing:.04em;word-spacing:.14em;line-height:1.85}
body.dys pre,body.dys textarea{letter-spacing:0;word-spacing:0}
.setrow{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin:10px 0}
.rep table{width:100%;border-collapse:collapse}.rep td,.rep th{border-bottom:1px solid var(--line,#8884);padding:6px 4px;text-align:left}
@media print{.top,.side,.menu-btn,.actions,#favBtn{display:none!important}.main{margin:0!important;max-width:none!important}body{background:#fff!important;color:#000!important}.card{box-shadow:none!important;border:1px solid #999!important}}

#ksso{text-decoration:none;color:inherit;font-weight:600}#ksso:hover{background:rgba(37,71,214,.08)}