/* LINA Learn · Student portal */
:root{--onAcc:#0B0D12;--top:rgba(11,13,18,.92);--heroA:#24130C;--heroLine:#4A2516;--okBg:#10261C;--okLine:#2C6B4C;--okInk:#A6F0CB;--warnBg:#2A220E;--warnLine:#6B5520;--warnInk:#FFE19A;--accBg:#24130C;--accLine:#7A3418;--errBg:#2A1414;--errLine:#7A2E2E;--errInk:#FFB4B4;--shadow:rgba(0,0,0,.5);--bg:#0B0D12;--bg2:#10131A;--card:#151821;--card2:#1B1F2A;--line:#2A2F3C;--line2:#3A4050;--ink:#F4F1EA;--muted:#B9BFCA;--dim:#7D8492;--accent:#FF5A1F;--accent2:#FFB18F;--ok:#3DDC97;--warn:#FFC857;--bad:#FF6B6B}
*{box-sizing:border-box}[hidden]{display:none!important}
html,body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,sans-serif;-webkit-text-size-adjust:100%}
body{min-height:100vh}
a{color:var(--accent2)}
button{font-family:inherit}
.boot{min-height:100vh;display:grid;place-items:center;color:var(--muted)}
/* content can't be selected/dragged (forms still work) */
.locked,.locked *{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
.locked input,.locked textarea{-webkit-user-select:text;user-select:text}
img,canvas,video,iframe{-webkit-user-drag:none}
@media print{body *{display:none!important}body::after{content:"Printing is disabled in the LINA Learn student portal.";display:block;padding:40px;font:20px Inter,sans-serif;color:#000}}

/* ── login ── */
.auth{min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:28px 16px 48px}
.brand{display:flex;align-items:center;gap:10px;font-family:Sora;font-weight:700;font-size:18px;color:var(--ink);text-decoration:none}
.brand img{width:34px;height:34px;border-radius:9px}.brand b{color:var(--accent)}
.auth .brand{margin-bottom:26px}
.auth-card{width:100%;max-width:440px;background:var(--card);border:1px solid var(--line);border-radius:22px;padding:26px}
.auth-card h1{font-family:Sora;font-size:24px;margin:0 0 6px}
.auth-card p.lead{color:var(--muted);line-height:1.55;margin:0 0 18px;font-size:15px}
.seg{display:grid;grid-template-columns:1fr 1fr;background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:4px;margin-bottom:20px}
.seg button{min-height:40px;border:0;border-radius:999px;background:none;color:var(--muted);font-weight:700;font-size:14px;cursor:pointer}
.seg button.on{background:var(--card2);color:var(--ink);box-shadow:inset 0 0 0 1px var(--line2)}
label.f{display:block;font-weight:700;font-size:14px;margin:0 0 6px}
label.f small{font-weight:500;color:var(--dim)}
input.i{width:100%;min-height:50px;padding:0 14px;border:1px solid var(--line2);border-radius:12px;background:var(--bg);color:var(--ink);font-size:16px;font-family:inherit;margin-bottom:14px}
input.i:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:transparent}
input.mono{font-family:'JetBrains Mono',monospace;text-transform:uppercase;letter-spacing:.06em}
.pw{position:relative}.pw input{padding-right:64px}
.pw button{position:absolute;right:8px;top:8px;height:34px;padding:0 10px;border:0;border-radius:8px;background:var(--card2);color:var(--muted);font-weight:700;font-size:12px;cursor:pointer}
.go{width:100%;min-height:54px;border:none;border-radius:999px;background:var(--accent);color:var(--onAcc);font:800 16px Inter;cursor:pointer}
.go:disabled{opacity:.6}
.err{padding:12px 14px;border-radius:12px;background:var(--errBg);border:1px solid var(--errLine);color:var(--errInk);font-size:14px;margin-bottom:14px;line-height:1.45}
.okmsg{padding:12px 14px;border-radius:12px;background:var(--okBg);border:1px solid var(--okLine);color:var(--okInk);font-size:14px;margin-bottom:14px}
.fine{font-size:13px;color:var(--dim);line-height:1.5;margin-top:16px;text-align:center}
.fine a{color:var(--muted)}

/* ── shell ── */
.top{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:12px;padding:12px max(16px,env(safe-area-inset-right)) 12px max(16px,env(safe-area-inset-left));background:var(--top);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.top .sp{flex:1}
.who{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted)}
.av{width:34px;height:34px;border-radius:50%;background:var(--card2);border:1px solid var(--line2);display:grid;place-items:center;font-weight:800;font-size:13px;color:var(--ink)}
.tabs{display:flex;gap:4px;padding:10px 16px;overflow-x:auto;scrollbar-width:none;border-bottom:1px solid var(--line);background:var(--bg)}
.tabs::-webkit-scrollbar{display:none}
.tabs a{flex:none;display:flex;align-items:center;gap:7px;padding:9px 14px;border-radius:999px;color:var(--muted);text-decoration:none;font-weight:700;font-size:14px}
.tabs a.on{background:var(--card2);color:var(--ink);box-shadow:inset 0 0 0 1px var(--line2)}
.tabs a .n{background:var(--accent);color:var(--onAcc);border-radius:999px;font-size:11px;padding:1px 7px}
.wrap{max-width:1040px;margin:0 auto;padding:22px 16px 80px}
h2.h{font-family:Sora;font-size:22px;margin:0 0 4px}
p.sub{color:var(--muted);margin:0 0 18px;line-height:1.5}
.grid{display:grid;gap:14px}
.g2{grid-template-columns:1fr 1fr}
@media(max-width:760px){.g2{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:20px}
.card h3{font-family:Sora;font-size:17px;margin:0 0 10px}
.muted{color:var(--muted)}.dim{color:var(--dim)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 18px;border-radius:999px;border:1px solid var(--line2);background:var(--card2);color:var(--ink);font-weight:700;font-size:14.5px;text-decoration:none;cursor:pointer}
.btn.pri{background:var(--accent);border-color:var(--accent);color:var(--onAcc)}
.btn.wa{background:#1F8F55;border-color:#1F8F55;color:#fff}
.btn.sm{min-height:36px;padding:0 14px;font-size:13.5px}
.btn:disabled,.btn.off{opacity:.5;pointer-events:none}
.row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.hero{background:linear-gradient(135deg,var(--heroA) 0%,var(--card) 60%);border-color:var(--heroLine)}
.hero .big{font-family:Sora;font-size:26px;font-weight:800;margin:4px 0 6px}
.pill{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;font-size:12.5px;font-weight:700;background:var(--card2);border:1px solid var(--line2);color:var(--muted)}
.pill.ok{background:var(--okBg);border-color:var(--okLine);color:var(--okInk)}
.pill.warn{background:var(--warnBg);border-color:var(--warnLine);color:var(--warnInk)}
.pill.acc{background:var(--accBg);border-color:var(--accLine);color:var(--accent2)}
.bar{height:8px;border-radius:99px;background:var(--line);overflow:hidden}
.bar i{display:block;height:100%;background:var(--accent);border-radius:99px}
dl.kv{display:grid;grid-template-columns:140px 1fr;gap:10px 14px;margin:0;font-size:14.5px}
dl.kv dt{color:var(--dim)}dl.kv dd{margin:0;word-break:break-word}
.mono{font-family:'JetBrains Mono',monospace}
.empty{text-align:center;color:var(--muted);padding:34px 16px}
.empty b{display:block;color:var(--ink);font-size:16px;margin-bottom:4px}

/* ── classroom ── */
.day-h{display:flex;align-items:center;gap:10px;margin:24px 0 10px;font-family:Sora;font-weight:700;font-size:16px}
.day-h:first-child{margin-top:0}
.day-h span{color:var(--dim);font-family:Inter;font-weight:600;font-size:13px}
.item{display:flex;gap:14px;align-items:center;width:100%;text-align:left;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:14px;color:var(--ink);cursor:pointer;margin-bottom:10px}
.item:hover{border-color:var(--line2);background:var(--card2)}
.item .ic{flex:none;width:46px;height:46px;border-radius:12px;display:grid;place-items:center;background:var(--bg);border:1px solid var(--line2);font-size:20px}
.item .tx{flex:1;min-width:0}
.item .tx b{display:block;font-size:15.5px;margin-bottom:3px}
.item .tx span{display:block;color:var(--muted);font-size:13.5px;line-height:1.4;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.item .st{flex:none;text-align:right;font-size:12.5px;color:var(--dim);min-width:70px}
.item .st .bar{width:70px;margin-top:6px}

/* ── viewer ── */
.viewer{position:fixed;inset:0;z-index:50;background:#06070A;display:flex;flex-direction:column}
.v-top{display:flex;align-items:center;gap:12px;padding:10px 14px;border-bottom:1px solid var(--line);background:var(--bg)}
.v-top b{flex:1;min-width:0;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.v-body{flex:1;overflow:auto;position:relative;display:flex;flex-direction:column;align-items:center;padding:16px}
.v-note{max-width:720px;width:100%;line-height:1.65;font-size:16px;white-space:pre-wrap;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px}
.pages{width:100%;max-width:900px;display:flex;flex-direction:column;gap:14px;align-items:center}
.pages canvas{width:100%;height:auto;background:#fff;border-radius:6px;box-shadow:0 6px 30px rgba(0,0,0,.4)}
.pg-ph{width:100%;aspect-ratio:1/1.414;background:#1a1d25;border-radius:6px;display:grid;place-items:center;color:var(--dim)}

/* player */
.player{position:relative;width:100%;max-width:1100px;aspect-ratio:16/9;background:#000;border-radius:14px;overflow:hidden;margin:auto 0}
.player:fullscreen{max-width:none;border-radius:0;aspect-ratio:auto;width:100vw;height:100vh}
.player .stage{position:absolute;inset:0;overflow:hidden}
/* YouTube frame is made taller than the box: its title bar (top) and logo (bottom) fall outside and are cut off */
.player .stage iframe{position:absolute;left:0;top:-90px;width:100%;height:calc(100% + 180px);border:0;pointer-events:none}
.player video{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;background:#000}
.player .shield{position:absolute;inset:0;z-index:3;cursor:pointer}
.player .cover{position:absolute;inset:0;z-index:4;display:grid;place-items:center;background:#000;transition:opacity .2s}
.player .cover.dim{background:rgba(0,0,0,.82)}
.player .cover .pb{width:84px;height:84px;border-radius:50%;border:0;background:var(--accent);color:var(--onAcc);font-size:34px;cursor:pointer;display:grid;place-items:center;box-shadow:0 10px 40px rgba(255,90,31,.4)}
.player .cover .cap{position:absolute;bottom:22%;left:0;right:0;text-align:center;color:var(--muted);font-size:14px}
.ctrl{position:absolute;left:0;right:0;bottom:0;z-index:6;padding:28px 12px 10px;background:linear-gradient(transparent,rgba(0,0,0,.85));display:flex;flex-direction:column;gap:8px;transition:opacity .25s}
.player.idle .ctrl{opacity:0}
.ctrl .seek{width:100%;accent-color:var(--accent);height:18px;cursor:pointer;margin:0}
.ctrl .cb{display:flex;align-items:center;gap:8px;color:#fff;font-size:13px}
.ctrl .cb button,.ctrl .cb select{height:34px;min-width:34px;border:0;border-radius:8px;background:rgba(255,255,255,.12);color:#fff;font-weight:700;font-size:13px;cursor:pointer;padding:0 10px}
.ctrl .cb select option{color:#000}
.ctrl .cb .t{font-family:'JetBrains Mono',monospace;font-size:12.5px;opacity:.9}
.ctrl .cb .sp{flex:1}
.ctrl input.vol{width:80px;accent-color:#fff}
@media(max-width:560px){.ctrl input.vol{display:none}}

/* watermark (also drawn into document pages) */
.wm{position:absolute;inset:0;z-index:5;pointer-events:none;overflow:hidden}
.wm .tile{position:absolute;inset:-50%;display:flex;flex-wrap:wrap;align-content:flex-start;gap:70px 90px;transform:rotate(-24deg);opacity:.13;color:#fff;text-shadow:0 0 2px #000,0 0 1px #000;font:700 15px Inter,sans-serif;white-space:nowrap;padding:40px}
.wm .float{position:absolute;color:rgba(255,255,255,.34);font:700 13px 'JetBrains Mono',monospace;text-shadow:0 1px 2px rgba(0,0,0,.6);transition:left 1.2s ease,top 1.2s ease;white-space:nowrap}
.v-body > .wm{position:fixed;top:56px}
.v-body > .wm .tile{color:#000;opacity:.07;text-shadow:none}
.v-body > .wm .float{color:rgba(255,90,31,.32);text-shadow:none}
.hidebox{position:fixed;inset:0;z-index:90;background:#000;display:grid;place-items:center;color:var(--muted);font-size:15px;text-align:center;padding:20px}

.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);z-index:100;background:var(--card2);border:1px solid var(--line2);color:var(--ink);padding:12px 18px;border-radius:12px;font-size:14px;box-shadow:0 10px 30px var(--shadow);max-width:calc(100vw - 32px)}
.msg{border-left:3px solid var(--accent)}
.msg .h{display:flex;gap:10px;align-items:baseline;margin-bottom:8px}
.msg .h b{flex:1;font-size:15.5px}
.msg .b{white-space:pre-wrap;color:var(--muted);line-height:1.55;font-size:14.5px}
.msg .b.clip{max-height:120px;overflow:hidden;-webkit-mask-image:linear-gradient(#000 60%,transparent)}
.msg.email{border-left-color:var(--line2)}
.player.pfs{position:fixed;inset:0;z-index:80;max-width:none;border-radius:0;aspect-ratio:auto;width:100vw;height:100vh;height:100dvh}
@media(max-width:520px){.hide-sm{display:none}.top .brand{font-size:16px}}
/* v2: locked items, continue watching, day progress, install card */
.item.locked-item{opacity:.72;cursor:default}
.item.locked-item .ic{background:var(--card2)}
.item.cont{background:linear-gradient(135deg,var(--heroA),var(--card) 70%);border-color:var(--heroLine);margin:0}
.item.cont .ic{background:var(--accent);color:var(--onAcc);border:0;font-size:18px}
.item.cont small{display:block;color:var(--accent2);font-weight:700;font-size:12px;margin-bottom:2px}
.item.cont .tx .bar{margin-top:8px;display:block;-webkit-line-clamp:unset}
.dprog{margin-left:auto;display:flex;align-items:center;gap:8px;font-family:Inter;font-weight:700;font-size:12.5px;color:var(--dim)}
.dprog .bar{width:70px}
.install{display:flex;align-items:center;gap:14px;padding:14px 16px}
.install img{width:44px;height:44px;border-radius:12px;flex:none}
.install div{flex:1;min-width:0}
.install b{display:block;font-size:15px}
.install span{display:block;color:var(--muted);font-size:13.5px;margin-top:2px}
.install .x{background:none;border:0;color:var(--dim);font-size:16px;cursor:pointer;padding:6px}

/* v3: themes — chosen by the student, saved on this device */
[data-theme=daylight]{--bg:#F5F3EE;--bg2:#EEEBE4;--card:#FFFFFF;--card2:#F1EEE8;--line:#E3DED4;--line2:#CFC8BB;--ink:#17181C;--muted:#4E5361;--dim:#6E7380;--accent:#D9440E;--accent2:#B23C0C;--onAcc:#FFFFFF;--ok:#148A5B;--top:rgba(245,243,238,.9);--heroA:#FFE6D8;--heroLine:#F2C2AA;--okBg:#E3F5EC;--okLine:#A9DCC4;--okInk:#0F6B45;--warnBg:#FFF4D6;--warnLine:#EBCB7A;--warnInk:#7A5600;--accBg:#FFEDE4;--accLine:#F2B99E;--errBg:#FDECEC;--errLine:#F0B4B4;--errInk:#9B1C1C;--shadow:rgba(40,30,20,.14)}
[data-theme=ocean]{--bg:#07121C;--bg2:#0B1824;--card:#0F1F2D;--card2:#142838;--line:#1F3547;--line2:#2C4659;--ink:#EAF4FA;--muted:#A9BFCD;--dim:#7891A2;--accent:#38BDF8;--accent2:#8FD8FB;--onAcc:#04121C;--top:rgba(7,18,28,.92);--heroA:#0C2A3D;--heroLine:#1C4A66;--accBg:#0C2A3D;--accLine:#1F5A7C}
[data-theme=plum]{--bg:#120D18;--bg2:#171020;--card:#1B1424;--card2:#231A2F;--line:#33283F;--line2:#45374F;--ink:#F5EFFA;--muted:#C3B6CF;--dim:#8F819C;--accent:#C084FC;--accent2:#DDB8FF;--onAcc:#160C22;--top:rgba(18,13,24,.92);--heroA:#2A1638;--heroLine:#4B2A63;--accBg:#2A1638;--accLine:#5B3478}
html{color-scheme:dark}html[data-theme=daylight]{color-scheme:light}
body,.card,.item,.tabs,.top{transition:background-color .25s ease,border-color .25s ease,color .25s ease}
.ico{width:16px;height:16px;flex:none;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.tabs a.on .ico{color:var(--accent)}

/* theme picker */
.tbtn{display:inline-flex;align-items:center;gap:7px;min-height:38px;padding:0 12px;border-radius:999px;border:1px solid var(--line2);background:var(--card);color:var(--muted);font-weight:700;font-size:13px;cursor:pointer}
.tbtn:hover{color:var(--ink)}
.tpop{position:absolute;right:16px;top:58px;z-index:30;width:250px;background:var(--card);border:1px solid var(--line2);border-radius:16px;padding:10px;box-shadow:0 18px 50px var(--shadow)}
.tpop b{display:block;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--dim);padding:4px 6px 8px}
.topt{display:flex;align-items:center;gap:12px;width:100%;min-height:46px;padding:6px 8px;border:0;border-radius:11px;background:none;color:var(--ink);font:600 14.5px Inter,sans-serif;cursor:pointer;text-align:left}
.topt:hover{background:var(--card2)}
.topt.on{background:var(--card2);box-shadow:inset 0 0 0 1px var(--line2)}
.topt .chk{margin-left:auto;color:var(--accent);font-weight:800}
.sw{width:30px;height:30px;border-radius:50%;flex:none;border:1px solid rgba(128,128,128,.35);position:relative;overflow:hidden}
.sw::after{content:"";position:absolute;right:3px;bottom:3px;width:11px;height:11px;border-radius:50%;background:var(--sa)}
.tgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px}
.tgrid .topt{border:1px solid var(--line)}

/* live countdown + journey track */
.cd{display:flex;gap:8px;margin:2px 0 16px}
.cd span{min-width:58px;padding:8px 6px;border-radius:12px;background:var(--bg);border:1px solid var(--line);text-align:center;font:800 22px 'JetBrains Mono',monospace;font-variant-numeric:tabular-nums;color:var(--ink)}
.cd span small{display:block;font:700 10.5px Inter,sans-serif;letter-spacing:.08em;text-transform:uppercase;color:var(--dim);margin-top:2px}
.journey{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);position:relative}
.journey li{position:relative;text-align:center;padding:0 6px}
.journey li::before{content:"";position:absolute;top:17px;left:-50%;width:100%;height:3px;background:var(--line);z-index:0}
.journey li:first-child::before{display:none}
.journey li.done::before,.journey li.now::before{background:var(--accent)}
.journey .dot{position:relative;z-index:1;width:36px;height:36px;margin:0 auto 10px;border-radius:50%;display:grid;place-items:center;background:var(--card2);border:2px solid var(--line2);color:var(--dim);font-weight:800;font-size:14px}
.journey .done .dot{background:var(--accent);border-color:var(--accent);color:var(--onAcc)}
.journey .now .dot{border-color:var(--accent);color:var(--accent);box-shadow:0 0 0 6px var(--accBg)}
.journey b{display:block;font-size:14px}
.journey small{display:block;color:var(--dim);font-size:12.5px;margin-top:3px;line-height:1.35}
.journey .now small{color:var(--accent2);font-weight:700}
@media(max-width:640px){
  .journey{grid-template-columns:1fr;gap:0}
  .journey li{display:grid;grid-template-columns:36px 1fr;column-gap:14px;text-align:left;padding:0 0 18px}
  .journey li:last-child{padding-bottom:0}
  .journey li::before{top:auto;bottom:-2px;left:16.5px;width:3px;height:calc(100% - 36px);transform:translateY(0)}
  .journey li:first-child::before{display:block}
  .journey li:last-child::before{display:none}
  .journey .dot{grid-row:span 2;margin:0}
  .journey b{align-self:end}
  .cd span{min-width:0;flex:1;font-size:20px}
}
@media (prefers-reduced-motion:reduce){body,.card,.item,.tabs,.top{transition:none}}
/* copyable details */
.copyable dd{-webkit-user-select:text!important;user-select:text!important}
.cpv{display:inline-flex;align-items:center;gap:8px;max-width:100%;word-break:break-word}
.cpb{flex:none;width:30px;height:30px;display:grid;place-items:center;border:1px solid var(--line);border-radius:8px;background:var(--card2);color:var(--muted);cursor:pointer}
.cpb:hover{color:var(--accent);border-color:var(--line2)}
.cpb .ico{width:14px;height:14px}
.btn .ico{width:16px;height:16px}
.btn.checkin{animation:ckp 2s ease-in-out infinite}@keyframes ckp{0%,100%{box-shadow:0 0 0 0 var(--accBg)}50%{box-shadow:0 0 0 8px var(--accBg)}}@media (prefers-reduced-motion:reduce){.btn.checkin{animation:none}}
/* strong password checklist */
.pwmeter{height:6px;border-radius:99px;background:var(--line);overflow:hidden;margin:-6px 0 10px}
.pwmeter i{display:block;height:100%;width:0;border-radius:99px;background:var(--bad);transition:width .2s,background .2s}
.pwmeter i.mid{background:var(--warn)}.pwmeter i.strong{background:var(--ok)}
.pwrules{list-style:none;margin:0 0 16px;padding:0;display:grid;gap:5px;font-size:13.5px;color:var(--dim)}
.pwrules li{display:flex;gap:8px;align-items:center}
.pwrules li::before{content:"○";width:16px;text-align:center;font-weight:800;color:var(--dim)}
.pwrules li.ok{color:var(--okInk)}
.pwrules li.ok::before{content:"✓";color:var(--ok)}
/* delete account */
.card.danger{border-color:var(--errLine)}
.card.danger h3{color:var(--errInk)}
.btn.del{border-color:var(--errLine);color:var(--errInk);background:transparent}
.btn.del:hover{background:var(--errBg)}

/* ═══ App mode: only inside the LINA Learn Android app (html.in-app) ═══ */
.in-app body{background:radial-gradient(120% 60% at 100% 0%,color-mix(in srgb,var(--accent) 16%,transparent),transparent 60%),var(--bg);background-attachment:fixed}
.in-app .top.abar{position:sticky;top:0;background:color-mix(in srgb,var(--bg) 88%,transparent);border-bottom:0;padding:14px 18px 10px;gap:12px}
.in-app .abar .av{width:44px;height:44px;font-size:15px;text-decoration:none;background:var(--accent);color:var(--onAcc);border:0}
.in-app .abar .hello{display:flex;flex-direction:column;line-height:1.15}
.in-app .abar .hello small{font-size:12.5px;color:var(--dim);font-weight:600}
.in-app .abar .hello b{font:800 19px Sora,Inter,sans-serif;color:var(--ink)}
.in-app .abar .tbtn{width:44px;height:44px;padding:0;justify-content:center;border-radius:14px}
.in-app .wrap{padding:6px 16px 110px}
.in-app h2.h.today{font-size:34px;letter-spacing:-.02em;margin-top:6px}
.in-app .card{border-radius:24px;padding:20px}
.in-app .card.hero{background:linear-gradient(150deg,color-mix(in srgb,var(--accent) 26%,var(--card)) 0%,var(--card) 70%)}
.in-app .hero .big{font-size:28px}
.in-app .btn{min-height:48px;border-radius:16px}
.in-app .item{border-radius:20px}
/* quick actions */
.quick{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.quick a{display:flex;flex-direction:column;align-items:center;gap:8px;padding:14px 4px;border-radius:20px;background:var(--card);border:1px solid var(--line);text-decoration:none;color:var(--ink);font:700 12px/1.25 Inter;text-align:center;-webkit-tap-highlight-color:transparent}
.quick a:active{transform:scale(.96)}
.quick i{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:var(--accBg);color:var(--accent)}
.quick i .ico{width:20px;height:20px}
/* bottom navigation */
.in-app .tabs.bnav{position:fixed;left:0;right:0;bottom:0;z-index:30;display:grid;grid-template-columns:repeat(5,1fr);gap:0;padding:8px 6px calc(8px + env(safe-area-inset-bottom));border-top:1px solid var(--line);border-bottom:0;background:color-mix(in srgb,var(--card) 92%,transparent);backdrop-filter:blur(14px);overflow:visible}
.in-app .bnav a{flex-direction:column;gap:4px;padding:4px 0 2px;border-radius:0;background:none!important;box-shadow:none!important;font-size:11.5px;font-weight:700;color:var(--dim);position:relative;justify-content:center}
.in-app .bnav a .ico{width:22px;height:22px;padding:4px 16px;box-sizing:content-box;border-radius:999px;transition:background .2s}
.in-app .bnav a.on{color:var(--ink)}
.in-app .bnav a.on .ico{background:var(--accBg);color:var(--accent)}
.in-app .bnav a .n{position:absolute;top:0;left:calc(50% + 8px);font-size:10px;padding:1px 6px}
.in-app .tpop{top:auto;bottom:auto;top:66px;right:14px}
/* app welcome / login */
.in-app .auth{justify-content:center;padding-top:40px}
.in-app .auth .brand{display:grid;grid-template-columns:auto auto;justify-content:center;column-gap:8px;row-gap:14px;font-size:24px;margin-bottom:22px}
.in-app .auth .brand img{grid-column:1/-1;justify-self:center}
.in-app .auth .brand img{width:76px;height:76px;border-radius:22px;box-shadow:0 14px 40px color-mix(in srgb,var(--accent) 35%,transparent)}
.in-app .auth-card{border-radius:28px;background:color-mix(in srgb,var(--card) 92%,transparent)}
.in-app .auth-card h1::before{content:"Welcome to your classroom";display:block;font:700 13px Inter;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);margin-bottom:6px}
.in-app .go{border-radius:18px}
@media (prefers-reduced-motion:reduce){.quick a:active{transform:none}.in-app .bnav a .ico{transition:none}}
.in-app dl.kv{grid-template-columns:1fr;gap:2px 0}
.in-app dl.kv dt{font-size:12.5px;text-transform:uppercase;letter-spacing:.06em}
.in-app dl.kv dd{margin-bottom:12px;font-size:16px}

/* "Built by LINA Apps" card on Home */
.oapps .oapp{display:grid;grid-template-columns:44px 1fr auto;gap:12px;align-items:center;padding:10px 0;border-top:1px solid var(--line);color:var(--ink);text-decoration:none}
.oapps .oapp img{width:44px;height:44px;border-radius:11px}
.oapps .oapp b{display:block;font-size:15px}.oapps .oapp small{display:block;color:var(--muted);font-size:13px;line-height:1.35}
.oapps .oapp em{font-style:normal;font-weight:800;font-size:13px;padding:8px 14px;border-radius:999px;background:var(--accent);color:var(--onAcc);white-space:nowrap}
.oapps .oapp:hover em{filter:brightness(1.08)}