/* ============ EDUMIXA – Design System ============ */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  /* Exact colours supplied in SUPPLIED_REFERENCE_BOARD.png. */
  --bg:#f8f7ff; --card:#ffffff; --ink:#10152f; --mut:#62677d; --line:#e8e5f5;
  --brand:#7c3aed; --brand-d:#6366f1; --brand2:#06b6d4; --brand-blue:#3882f6; --brand-l:#ede9fe;
  --ok:#16a34a; --ok-l:#ecfdf3; --bad:#dc2626; --bad-l:#fef2f2; --warn:#f59e0b; --warn-l:#fffbeb;
  --grad:linear-gradient(135deg,#7c3aed 0%,#6366f1 100%);
  --grad2:linear-gradient(135deg,#06b6d4 0%,#3882f6 100%);
  --gold:linear-gradient(135deg,#f59e0b,#f97316);
  --r:16px; --rs:10px; --sh:0 4px 24px rgba(23,26,40,.06); --sh2:0 10px 40px rgba(79,70,229,.16);
  --font:'Hind Siliguri','Noto Sans Bengali','SolaimanLipi','Kalpurush','Segoe UI',system-ui,-apple-system,sans-serif;
}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--ink);line-height:1.65;font-size:16px;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;font-size:inherit;color:inherit}
input,select,textarea{font-family:inherit;font-size:1rem}
::selection{background:#c7d2fe}
h1,h2,h3,h4{line-height:1.3;font-weight:700}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
.muted{color:var(--mut)} .small{font-size:.85rem} .xs{font-size:.75rem}
.center{text-align:center}
.mt1{margin-top:8px}.mt2{margin-top:16px}.mt3{margin-top:24px}.mt4{margin-top:40px}
.row{display:flex;align-items:center;gap:10px}
.spread{display:flex;align-items:center;justify-content:space-between;gap:10px}
.wrapf{flex-wrap:wrap}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hide{display:none!important}

/* ---------- Buttons / chips / badges ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;border-radius:12px;font-weight:600;font-size:.98rem;transition:.2s;border:2px solid transparent;cursor:pointer}
.btn-p{background:var(--grad);color:#fff;box-shadow:0 6px 18px rgba(79,70,229,.3)}
.btn-p:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(79,70,229,.4)}
.btn-o{border-color:var(--brand);color:var(--brand);background:#fff}
.btn-o:hover{background:var(--brand-l)}
.btn-g{background:#eef0f8;color:var(--ink)}
.btn-g:hover{background:#e2e5f3}
.btn-lg{padding:15px 32px;font-size:1.08rem;border-radius:14px}
.btn-sm{padding:7px 14px;font-size:.85rem;border-radius:9px}
.btn-blk{width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}
.chip{display:inline-flex;align-items:center;gap:6px;background:#eef0f8;border-radius:999px;padding:5px 14px;font-size:.85rem;font-weight:600;color:#3f4559}
.chip-a{background:var(--brand-l);color:var(--brand-d)}
.tag{display:inline-block;padding:2px 10px;border-radius:999px;font-size:.72rem;font-weight:700}
.tag-ok{background:var(--ok-l);color:var(--ok)} .tag-bad{background:var(--bad-l);color:var(--bad)}
.tag-w{background:var(--warn-l);color:#b45309} .tag-i{background:var(--brand-l);color:var(--brand-d)}
.pro-b{background:var(--gold);color:#fff;padding:3px 10px;border-radius:999px;font-size:.7rem;font-weight:800;letter-spacing:.5px}

/* ---------- Cards ---------- */
.card{background:var(--card);border-radius:var(--r);box-shadow:var(--sh);padding:22px;border:1px solid var(--line)}
.card-h{font-size:1.05rem;font-weight:700}
.g2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.g3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.g4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media(max-width:980px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.g2,.g3,.g4{grid-template-columns:1fr}}

/* ---------- Inputs ---------- */
.field{margin-bottom:16px}
.field label{display:block;font-weight:600;font-size:.9rem;margin-bottom:6px}
.inp{width:100%;padding:13px 16px;border:2px solid var(--line);border-radius:12px;background:#fff;transition:.2s;font-size:1rem}
.inp:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(79,70,229,.1)}
.inp-err{border-color:var(--bad)}
.phone-wrap{display:flex;align-items:center;border:2px solid var(--line);border-radius:12px;overflow:hidden;background:#fff}
.phone-wrap:focus-within{border-color:var(--brand)}
.phone-wrap .cc{display:flex;align-items:center;gap:6px;padding:12px 14px;background:#f6f7fc;font-weight:700;border-right:2px solid var(--line);white-space:nowrap}
.phone-wrap input{flex:1;border:none;padding:13px 14px;font-size:1.05rem;letter-spacing:1px}
.phone-wrap input:focus{outline:none}

/* ---------- Progress / rings / bars ---------- */
.bar{height:9px;background:#edeff7;border-radius:99px;overflow:hidden}
.bar>i{display:block;height:100%;background:var(--grad);border-radius:99px;transition:width .6s ease}
.ring{border-radius:50%;display:grid;place-items:center;position:relative}
.ring::after{content:'';position:absolute;inset:9px;background:#fff;border-radius:50%}
.ring>span{position:relative;z-index:1;font-weight:800}

/* ---------- Toast / Modal ---------- */
#toasts{position:fixed;top:18px;left:50%;transform:translateX(-50%);z-index:9999;display:flex;flex-direction:column;gap:8px;width:min(92vw,420px)}
.toast{background:#1f2337;color:#fff;padding:13px 18px;border-radius:12px;box-shadow:0 10px 30px rgba(0,0,0,.25);font-size:.92rem;display:flex;gap:10px;align-items:center;animation:tin .3s ease}
.toast-ok{background:#0e9f5b}.toast-bad{background:#d9480f}
@keyframes tin{from{opacity:0;transform:translateY(-12px)}to{opacity:1;transform:none}}
.m-ov{position:fixed;inset:0;background:rgba(15,17,32,.55);backdrop-filter:blur(4px);z-index:900;display:grid;place-items:center;padding:18px;animation:fin .2s ease}
@keyframes fin{from{opacity:0}to{opacity:1}}
.m-box{background:#fff;border-radius:20px;max-width:520px;width:100%;padding:26px;box-shadow:0 30px 80px rgba(0,0,0,.3);animation:mup .25s ease;max-height:88vh;overflow:auto}
@keyframes mup{from{transform:translateY(20px);opacity:0}to{transform:none;opacity:1}}

/* =============================================================
   LANDING PAGE
============================================================= */
.lnav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.lnav .wrap{display:flex;align-items:center;justify-content:space-between;height:66px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.25rem;color:var(--ink)}
.logo .lg-m{width:38px;height:38px;border-radius:11px;background-image:url('/img/edumixa-app-icon-dark.png')!important;background-color:transparent!important;background-size:cover!important;background-position:center!important;display:grid;place-items:center;color:transparent!important;font-size:0!important;font-weight:800;box-shadow:0 4px 12px rgba(124,58,237,.35)}
.lnav-links{display:flex;gap:26px;font-weight:600;color:#3c4257}
.lnav-links a{color:#3c4257}.lnav-links a:hover{color:var(--brand)}
@media(max-width:760px){.lnav-links{display:none}}

.hero{overflow:hidden;position:relative;background:
 radial-gradient(900px 500px at 85% -10%,#ede9fe 0%,transparent 60%),
 radial-gradient(700px 420px at -5% 110%,#e0f2fe 0%,transparent 55%),#fbfbff}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;padding-top:70px;padding-bottom:80px}
@media(max-width:900px){.hero .wrap{grid-template-columns:1fr;padding-top:40px;padding-bottom:50px}}
.hero h1{font-size:clamp(1.8rem,4.2vw,3.1rem);font-weight:800}
.hero p.sub{font-size:1.05rem;color:var(--mut);margin-top:16px;max-width:520px}
.hero .trust{margin-top:22px;display:flex;gap:18px;flex-wrap:wrap;color:#3c4257;font-size:.9rem;font-weight:600}
.hero-art{display:flex;justify-content:center}
.bubble{position:absolute;border-radius:50%;filter:blur(2px);opacity:.5;animation:fl 6s ease-in-out infinite}
@keyframes fl{0%,100%{transform:translateY(0)}50%{transform:translateY(-18px)}}

.stats-band{background:var(--grad);color:#fff}
.stats-band .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;padding-top:26px;padding-bottom:26px;text-align:center}
@media(max-width:720px){.stats-band .wrap{grid-template-columns:repeat(2,1fr)}}
.stat-n{font-size:2rem;font-weight:800}
.stats-band .lbl{opacity:.85;font-size:.92rem}

.sec{padding:66px 0}
.sec-h{text-align:center;max-width:680px;margin:0 auto 40px}
.sec-h h2{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:800}
.sec-h p{color:var(--mut);margin-top:10px}

.fgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media(max-width:980px){.fgrid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.fgrid{grid-template-columns:1fr 1fr;gap:12px}}
.fcell{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px 16px;text-align:center;box-shadow:var(--sh);transition:.25s}
.fcell:hover{transform:translateY(-6px);box-shadow:var(--sh2);border-color:#dfe3ff}
.fcell .em{width:62px;height:62px;margin:0 auto 12px;border-radius:18px;display:grid;place-items:center;font-size:1.7rem;background:var(--brand-l)}
.fcell b{display:block;font-size:.98rem}

.feat-row{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;padding:38px 0;border-bottom:1px dashed var(--line)}
.feat-row:last-child{border-bottom:none}
.feat-row.rev .f-art{order:-1}
@media(max-width:900px){.feat-row{grid-template-columns:1fr;gap:20px}.feat-row.rev .f-art{order:0}}
.f-art{background:linear-gradient(135deg,#ede9fe,#faf5ff);border-radius:24px;padding:28px;min-height:240px;display:grid;place-items:center;border:1px solid #e3e6ff}
.f-num{font-size:.8rem;font-weight:800;color:var(--brand);letter-spacing:2px}

.why-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
@media(max-width:800px){.why-grid{grid-template-columns:1fr}}
.why-c{background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px;display:flex;gap:16px;box-shadow:var(--sh)}
.why-c .em{flex:0 0 52px;height:52px;border-radius:15px;background:var(--brand-l);display:grid;place-items:center;font-size:1.5rem}

.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
@media(max-width:980px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.steps{grid-template-columns:1fr}}
.step-c{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px 16px;text-align:center;position:relative;box-shadow:var(--sh)}
.step-c .n{width:42px;height:42px;margin:0 auto 10px;border-radius:50%;background:var(--grad);color:#fff;font-weight:800;display:grid;place-items:center;font-size:1.05rem}

.faq-list{max-width:760px;margin:0 auto}
details.faq{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;box-shadow:var(--sh);overflow:hidden}
details.faq summary{padding:17px 20px;font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:10px}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:'+';font-size:1.4rem;color:var(--brand);font-weight:400;transition:.25s}
details.faq[open] summary::after{transform:rotate(45deg)}
details.faq .fa-body{padding:0 20px 18px;color:var(--mut)}

.cta-band{background:var(--grad);border-radius:26px;color:#fff;padding:54px 30px;text-align:center;box-shadow:var(--sh2)}
.cta-band .btn-w{background:#fff;color:var(--brand-d)}

.footer{background:#14162a;color:#aab;margin-top:70px}
.footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px;padding:52px 0 34px}
@media(max-width:860px){.footer .cols{grid-template-columns:1fr 1fr}}
@media(max-width:540px){.footer .cols{grid-template-columns:1fr}}
.footer h4{color:#fff;margin-bottom:14px;font-size:1rem}
.footer a{color:#aab;display:block;padding:4px 0}
.footer a:hover{color:#fff}
.footer .bot{border-top:1px solid #262a45;padding:18px 0;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;font-size:.85rem}

/* =============================================================
   AUTH PAGE
============================================================= */
.auth-wrap{display:grid;grid-template-columns:1.1fr 1fr;min-height:100vh}
@media(max-width:900px){.auth-wrap{grid-template-columns:1fr}.auth-left{display:none}}
.auth-left{background:var(--grad);color:#fff;display:flex;flex-direction:column;justify-content:center;padding:40px;position:relative;overflow:hidden}
.auth-left h2{font-size:clamp(1.5rem,2.6vw,2.3rem);font-weight:800;line-height:1.4}
.auth-left .pill-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.auth-left .pill{background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);padding:6px 16px;border-radius:99px;font-size:.88rem;font-weight:600}
.auth-slide{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);border-radius:22px;padding:18px;margin-top:36px;max-width:420px;box-shadow:0 20px 50px rgba(0,0,0,.2)}
.auth-right{display:flex;align-items:center;justify-content:center;padding:34px 22px;background:var(--bg)}
.auth-card{background:#fff;border-radius:22px;box-shadow:var(--sh2);padding:34px;width:100%;max-width:430px;border:1px solid var(--line)}
/* Homepage login uses a real same-page modal; the full /auth URL remains for direct visits. */
.auth-popup{position:relative;display:grid;grid-template-columns:minmax(230px,.82fr) minmax(300px,1fr);gap:20px;align-items:stretch}
.auth-popup-copy{border-radius:18px;padding:30px 25px;color:#fff;background:radial-gradient(circle at 12% 10%,rgba(255,255,255,.24),transparent 30%),linear-gradient(145deg,#5130bb,#7c3aed 58%,#176bc7);box-shadow:inset 0 1px 0 rgba(255,255,255,.24)}
.auth-popup-copy h2{margin:24px 0 8px;font-size:clamp(1.35rem,2.7vw,1.9rem);line-height:1.38}.auth-popup-copy p{opacity:.91;line-height:1.7;font-size:.92rem}
.auth-popup-chip{display:inline-flex;margin-top:25px;padding:6px 11px;border-radius:99px;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.26);font-size:.78rem;font-weight:700}
.auth-popup-points{display:grid;gap:9px;margin-top:24px;font-size:.82rem;font-weight:600;color:#f1f5ff}.auth-popup-form{display:flex;align-items:center;padding:6px}.auth-popup-form .auth-card{max-width:none;width:100%;box-shadow:none;padding:18px 10px;border:0}.auth-popup-close{position:absolute;z-index:2;right:4px;top:4px;width:32px;height:32px;border:0;border-radius:10px;background:rgba(15,17,32,.08);color:#4b5563;font-size:1.4rem;line-height:1;cursor:pointer}.auth-popup-close:hover{background:rgba(15,17,32,.15)}
@media(max-width:700px){.m-box:has(.auth-popup){padding:14px;max-height:92vh}.auth-popup{grid-template-columns:1fr;gap:0}.auth-popup-copy{padding:22px 20px;border-radius:16px 16px 12px 12px}.auth-popup-copy h2{margin-top:15px}.auth-popup-chip{margin-top:14px}.auth-popup-points{display:none}.auth-popup-form{padding:5px 4px}.auth-popup-form .auth-card{padding:18px 9px}.auth-popup-close{right:10px;top:10px;background:rgba(255,255,255,.2);color:#fff}}
.otp-boxes{display:flex;gap:9px;justify-content:center;margin:18px 0}
.otp-boxes input{width:46px;height:54px;text-align:center;font-size:1.4rem;font-weight:800;border:2px solid var(--line);border-radius:12px}
.otp-boxes input:focus{outline:none;border-color:var(--brand)}
.demo-note{background:var(--warn-l);border:1px dashed #f59e0b;color:#92600a;border-radius:12px;padding:12px 14px;font-size:.88rem;font-weight:600;text-align:center}

/* =============================================================
   APP SHELL
============================================================= */
.app{display:grid;grid-template-columns:242px 1fr;min-height:100vh}
.side{background:#14162a;color:#cfd3e8;position:sticky;top:0;height:100vh;display:flex;flex-direction:column;padding:18px 14px;overflow:auto}
.side .logo{color:#fff;margin:4px 8px 22px}
.snav{display:flex;flex-direction:column;gap:3px;flex:1}
.snav a{display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:12px;color:#cfd3e8;font-weight:600;font-size:.94rem;transition:.15s}
.snav a:hover{background:#1f2340;color:#fff}
.snav a.on{background:var(--grad);color:#fff;box-shadow:0 6px 16px rgba(79,70,229,.35)}
.snav a .em{width:24px;text-align:center;font-size:1.1rem}
.side-up{margin-top:14px;background:#1c1f3a;border-radius:16px;padding:16px;color:#cfd3e8}
.main{min-width:0;padding:22px 26px 90px}
@media(max-width:960px){
  .app{grid-template-columns:1fr}
  .side{display:none}
  .main{padding:16px 14px 86px}
}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px;flex-wrap:wrap}
.topbar h1{font-size:1.35rem}
.tb-right{display:flex;align-items:center;gap:10px}
.tb-chip{background:#fff;border:1px solid var(--line);border-radius:99px;padding:6px 14px;font-weight:700;font-size:.9rem;box-shadow:var(--sh);display:inline-flex;align-items:center;gap:6px}
.tb-icon{width:42px;height:42px;border-radius:50%;background:#fff;border:1px solid var(--line);box-shadow:var(--sh);display:grid;place-items:center;font-size:1.15rem;line-height:1;transition:.15s;cursor:pointer}
.tb-icon:hover{transform:translateY(-2px);box-shadow:var(--sh2)}
.avatar{width:42px;height:42px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:800;cursor:pointer;box-shadow:0 4px 12px rgba(79,70,229,.3)}
.notif-wrap{position:relative}
.notif-dot{position:absolute;top:6px;right:8px;width:9px;height:9px;background:#ef4444;border-radius:50%;border:2px solid #fff}
.notif-panel{position:absolute;right:0;top:52px;width:min(88vw,340px);background:#fff;border-radius:16px;box-shadow:0 20px 60px rgba(0,0,0,.18);border:1px solid var(--line);z-index:200;padding:8px}
.notif-item{display:flex;gap:12px;padding:12px;border-radius:12px}
.notif-item:hover{background:#f6f7fb}

.bnav{position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--line);display:none;z-index:150;padding:6px 4px calc(6px + env(safe-area-inset-bottom));box-shadow:0 -6px 24px rgba(0,0,0,.06)}
.bnav .grid{display:grid;grid-template-columns:repeat(6,1fr)}
.bnav a{display:flex;flex-direction:column;align-items:center;gap:2px;font-size:.66rem;font-weight:700;color:#8a90a5;padding:6px 2px;border-radius:10px}
.bnav a .em{font-size:1.25rem}
.bnav a.on{color:var(--brand);background:var(--brand-l)}
@media(max-width:960px){.bnav{display:block}}

/* ---------- Dashboard ---------- */
.dash-hero{background:var(--grad);color:#fff;border-radius:22px;padding:26px;display:flex;justify-content:space-between;gap:20px;align-items:center;flex-wrap:wrap;box-shadow:var(--sh2);position:relative;overflow:hidden}
.dash-hero::after{content:'';position:absolute;width:280px;height:280px;border-radius:50%;background:rgba(255,255,255,.08);top:-120px;right:-60px}
.dash-hero h2{font-size:1.4rem}
.mini-cards .card{padding:16px;display:flex;gap:12px;align-items:center}
.mini-cards .em{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;font-size:1.3rem;background:var(--brand-l)}
.mini-cards b{font-size:1.3rem;display:block;line-height:1.2}
.qa-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
@media(max-width:960px){.qa-grid{grid-template-columns:repeat(2,1fr)}}
.qa-c{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px 12px;text-align:center;box-shadow:var(--sh);transition:.2s;cursor:pointer}
.qa-c:hover{transform:translateY(-4px);border-color:#d9defc;box-shadow:var(--sh2)}
.qa-c .em{font-size:1.6rem}
.qa-c b{display:block;margin-top:8px;font-size:.92rem}

/* ---------- Subject / chapter lists ---------- */
.subj-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media(max-width:1060px){.subj-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:760px){.subj-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.subj-grid{grid-template-columns:1fr 1fr;gap:10px}}
.subj-c{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:var(--sh);cursor:pointer;transition:.2s;position:relative}
.subj-c:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:#d9defc}
.subj-c .em{width:52px;height:52px;border-radius:15px;display:grid;place-items:center;font-size:1.5rem;margin-bottom:10px}
.ch-row{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px 18px;box-shadow:var(--sh);cursor:pointer;transition:.2s;margin-bottom:12px}
.ch-row:hover{border-color:#d9defc;box-shadow:var(--sh2)}

/* ---------- Practice / exam runner ---------- */
.runner-top{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);padding:12px 0;margin-bottom:18px}
.q-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px;box-shadow:var(--sh);max-width:760px;margin:0 auto}
.q-meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.q-text{font-size:1.15rem;font-weight:600;line-height:1.7}
.opts{display:flex;flex-direction:column;gap:12px;margin-top:22px}
.opt{display:flex;align-items:center;gap:14px;border:2px solid var(--line);border-radius:14px;padding:14px 16px;cursor:pointer;transition:.15s;background:#fff;font-weight:600}
.opt:hover{border-color:#c7cdfe;background:#fafaff}
.opt .k{width:34px;height:34px;flex:0 0 34px;border-radius:10px;background:#eef0f8;display:grid;place-items:center;font-weight:800;color:#4a5068}
.opt.ok{border-color:var(--ok);background:var(--ok-l)}
.opt.ok .k{background:var(--ok);color:#fff}
.opt.bad{border-color:var(--bad);background:var(--bad-l)}
.opt.bad .k{background:var(--bad);color:#fff}
.opt.dis{pointer-events:none;opacity:.85}
.explain{margin-top:18px;border-radius:14px;padding:16px 18px;background:var(--brand-l);border:1px solid #dfe4ff}
/* ---- স্মার্ট অনুশীলন: কৌশল, ভুল-রিভিউ, কিবোর্ড হিন্ট ---- */
.tipbox{margin-top:10px;padding:10px 12px;border-radius:12px;background:#fff8e6;border:1px solid #f5d98b;line-height:1.7}
/* ---- বিভাগভিত্তিক বিষয় বাছাই ---- */
.grp-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  padding:12px 16px;margin-bottom:14px;border-radius:14px;
  background:linear-gradient(135deg,#ede9fe,#f5f3ff);border:1px solid #dfe4ff}
.grp-bar b{font-size:.98rem}
.grp-pick{display:grid;grid-template-columns:1fr;gap:10px}
.cls-pick{display:flex;gap:8px;flex-wrap:wrap}
.cls-opt{flex:1;min-width:62px;text-align:center;padding:12px 8px;border-radius:12px;
  border:2px solid #e6e8f0;background:#fff;cursor:pointer;font-weight:700;transition:.15s}
.cls-opt:hover{border-color:#a5b4fc}
.cls-opt.on{border-color:#7c3aed;background:#ede9fe;color:#7c3aed}
.grp-opt{padding:14px 16px;border-radius:14px;border:2px solid #e6e8f0;background:#fff;cursor:pointer;transition:.15s}
.grp-opt:hover{border-color:#a5b4fc;transform:translateY(-1px)}
.grp-opt.on{border-color:#7c3aed;background:#ede9fe}
.grp-opt b{font-size:1.02rem}

.kbd-hint{margin-top:10px;opacity:.75}
.kbd-hint b{display:inline-block;padding:1px 7px;border-radius:6px;background:#ede9fe;border:1px solid #dfe4ff;font-weight:700}
.wrongwrap{border-radius:16px;padding:16px 18px;background:#fff5f5;border:1px solid #f6c9c9}
.wrongttl{font-weight:800;margin-bottom:12px;color:#b42318}
.wrongitem{padding:12px 0;border-top:1px dashed #f0b9b9}
.wrongitem:first-of-type{border-top:0}
.wrongitem .wq{font-weight:700;line-height:1.7;margin-bottom:6px}
.wrongitem .tag{margin-right:6px}
.allright{border-radius:16px;padding:16px 18px;background:#ecfdf5;border:1px solid #9fe3c0;font-weight:700;color:#0f7a4d;text-align:center}

.explain .ttl{font-weight:800;color:var(--brand-d);margin-bottom:6px;display:flex;align-items:center;gap:6px}
.timer-chip{background:#1f2337;color:#fff;border-radius:99px;padding:8px 18px;font-weight:800;font-variant-numeric:tabular-nums;display:inline-flex;gap:8px;align-items:center}
.timer-chip.danger{background:var(--bad);animation:pulse 1s infinite}
@keyframes pulse{50%{opacity:.75}}
.palette{display:grid;grid-template-columns:repeat(auto-fill,minmax(42px,1fr));gap:8px}
.pal{height:42px;border-radius:10px;border:2px solid var(--line);background:#fff;font-weight:700;display:grid;place-items:center;cursor:pointer;font-size:.9rem}
.pal.ans{background:var(--ok-l);border-color:var(--ok);color:var(--ok)}
.pal.mk{background:var(--warn-l);border-color:var(--warn);color:#b45309}
.pal.cur{outline:3px solid var(--brand);outline-offset:1px}
.sum-ring{display:flex;flex-direction:column;align-items:center;gap:6px}

/* ---------- Leaderboard ---------- */
.podium{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;align-items:end;margin-bottom:24px}
.pod-c{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px 12px;text-align:center;box-shadow:var(--sh)}
.pod-c .med{font-size:1.8rem}
.pod-c .av{width:56px;height:56px;border-radius:50%;margin:8px auto;display:grid;place-items:center;color:#fff;font-weight:800;font-size:1.2rem}
.pod-c.p1{padding-bottom:34px;border-color:#fcd34d;background:linear-gradient(180deg,#fffbeb, #fff)}
.lb-row{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 16px;margin-bottom:10px;box-shadow:var(--sh)}
.lb-row .rk{width:34px;font-weight:800;color:var(--mut);text-align:center}
.lb-row.me{border:2px solid var(--brand);background:var(--brand-l)}

/* ---------- Chat (AI) ---------- */
.chat-box{max-width:820px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--sh);display:flex;flex-direction:column;height:calc(100vh - 210px);min-height:440px;overflow:hidden}
.chat-scroll{flex:1;overflow-y:auto;padding:22px;display:flex;flex-direction:column;gap:14px}
.msg{max-width:78%;padding:12px 16px;border-radius:18px;font-size:.95rem;line-height:1.7;white-space:pre-wrap;word-break:break-word}
.msg.me{align-self:flex-end;background:var(--grad);color:#fff;border-bottom-right-radius:6px}
.msg.ai{align-self:flex-start;background:#f3f4fb;border-bottom-left-radius:6px}
.msg.ai b{color:var(--brand-d)}
.typing{align-self:flex-start;background:#f3f4fb;padding:14px 20px;border-radius:18px;display:flex;gap:5px}
.typing i{width:8px;height:8px;background:#9aa0b5;border-radius:50%;animation:tp 1s infinite}
.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}
@keyframes tp{30%{transform:translateY(-6px)}}
.chat-inp{display:flex;gap:10px;padding:14px;border-top:1px solid var(--line);background:#fbfbff}
.qchips{display:flex;gap:8px;flex-wrap:wrap;padding:0 14px 12px;background:#fbfbff}
.qchip{background:#fff;border:1.5px solid var(--line);border-radius:99px;padding:6px 14px;font-size:.83rem;font-weight:600;color:#4a5068;cursor:pointer;transition:.15s}
.qchip:hover{border-color:var(--brand);color:var(--brand)}

/* ---------- Library ---------- */
.book-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media(max-width:1000px){.book-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:720px){.book-grid{grid-template-columns:repeat(2,1fr)}}
.book-c{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:var(--sh);cursor:pointer;transition:.2s;position:relative}
.book-c:hover{transform:translateY(-5px);box-shadow:var(--sh2)}
.book-c .cover{height:150px;display:grid;place-items:center;font-size:3rem;color:#fff;position:relative}
.book-c .cov-t{position:absolute;bottom:10px;left:12px;right:12px;color:#fff;font-weight:800;text-shadow:0 2px 8px rgba(0,0,0,.35)}
.reader{max-width:780px;margin:0 auto}
.reader-page{background:#fff;border:1px solid var(--line);border-radius:20px;padding:34px 32px;box-shadow:var(--sh);min-height:420px}
.reader-page h3{color:var(--brand-d);margin-bottom:14px;font-size:1.25rem}
.reader-page ul{padding-left:22px}
.reader-page li{margin:7px 0}
.reader-page table{border-collapse:collapse;width:100%;margin:12px 0}
.reader-page td,.reader-page th{border:1px solid var(--line);padding:8px 12px;font-size:.93rem}
.reader-page th{background:var(--brand-l)}
.lock-ov{position:absolute;inset:0;background:rgba(255,255,255,.6);backdrop-filter:blur(2px);display:grid;place-items:center;border-radius:18px}

/* ---------- Tables ---------- */
.tbl{width:100%;border-collapse:collapse;background:#fff;border-radius:14px;overflow:hidden;box-shadow:var(--sh)}
.tbl th{background:#1f2337;color:#fff;padding:11px 14px;font-size:.85rem;text-align:left}
.tbl td{padding:11px 14px;border-bottom:1px solid var(--line);font-size:.92rem}
.tbl tr:last-child td{border-bottom:none}

/* ---------- Tabs ---------- */
.tabs{display:flex;gap:8px;background:#eef0f8;padding:6px;border-radius:14px;flex-wrap:wrap}
.tabs button{flex:1;padding:9px 16px;border-radius:10px;font-weight:700;color:#4a5068;font-size:.9rem;min-width:100px}
.tabs button.on{background:#fff;color:var(--brand);box-shadow:var(--sh)}

/* ---------- Landing phone mockup (SVG art) ---------- */
.phone-mock{width:min(340px,86vw);filter:drop-shadow(0 30px 50px rgba(79,70,229,.28));animation:fl 7s ease-in-out infinite}
.hero-float{position:absolute;background:#fff;border-radius:14px;box-shadow:var(--sh2);padding:10px 16px;font-weight:800;font-size:.9rem;display:flex;gap:8px;align-items:center;animation:fl 5s ease-in-out infinite}
@media(max-width:900px){.hero-float{display:none}}

.accordion-item{border:1px solid var(--line);border-radius:14px;margin-bottom:10px;background:#fff;overflow:hidden}
.acc-h{padding:15px 18px;font-weight:700;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:10px}
.acc-h::after{content:'▾';color:var(--brand);transition:.2s}
.acc-item.open .acc-h::after{transform:rotate(180deg)}
.acc-body{display:none;padding:0 18px 16px;color:var(--mut)}
.acc-item.open .acc-body{display:block}

.exam-card{display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px 20px;box-shadow:var(--sh);margin-bottom:14px;flex-wrap:wrap}
.exam-card .em{width:56px;height:56px;border-radius:16px;display:grid;place-items:center;font-size:1.6rem;background:var(--brand-l)}

.live-dot{width:10px;height:10px;background:#ef4444;border-radius:50%;display:inline-block;animation:pulse 1.2s infinite}
.up-band{background:linear-gradient(135deg,#111827,#312e81);color:#fff;border-radius:20px;padding:24px;position:relative;overflow:hidden}
.up-band::after{content:'';position:absolute;width:220px;height:220px;border-radius:50%;background:rgba(124,58,237,.35);top:-80px;right:-40px}

.plan-c{background:#fff;border:2px solid var(--line);border-radius:22px;padding:26px;box-shadow:var(--sh);position:relative;display:flex;flex-direction:column}
.plan-c.hot{border-color:var(--brand);box-shadow:var(--sh2)}
.plan-c .price{font-size:2rem;font-weight:800;margin:8px 0}
.plan-c ul{list-style:none;margin:14px 0;flex:1}
.plan-c li{padding:7px 0;border-bottom:1px dashed var(--line);font-size:.93rem}
.plan-c li::before{content:'✓ ';color:var(--ok);font-weight:800}

.kbd{background:#eef0f8;border-radius:6px;padding:1px 8px;font-weight:700}
.spin{width:44px;height:44px;border:4px solid #e0e2f0;border-top-color:var(--brand);border-radius:50%;animation:spin 1s linear infinite;margin:0 auto}
@keyframes spin{to{transform:rotate(360deg)}}
.confetti{position:fixed;font-size:1.4rem;z-index:9998;animation:cf 2.4s ease-in forwards;pointer-events:none}
@keyframes cf{to{transform:translateY(110vh) rotate(540deg);opacity:0}}

/* =============================================================
   GLASSMORPHISM LAYER — frosted glass over a gradient mesh
============================================================= */
body{
  background:
    radial-gradient(1100px 720px at 85% -12%, rgba(124,58,237,.17), transparent 55%),
    radial-gradient(900px 620px at -8% 10%, rgba(6,182,212,.15), transparent 52%),
    radial-gradient(1000px 760px at 55% 118%, rgba(79,70,229,.14), transparent 55%),
    linear-gradient(180deg,#f8f8ff 0%,#eef0fa 55%,#f4f0ff 100%);
  background-attachment:fixed;
}
body::before,body::after{content:'';position:fixed;z-index:-1;border-radius:50%;filter:blur(80px);opacity:.55;pointer-events:none}
body::before{width:540px;height:540px;background:#c4b5fd;top:-160px;left:-130px;animation:blob1 26s ease-in-out infinite}
body::after{width:480px;height:480px;background:#a5f3fc;bottom:-180px;right:-110px;animation:blob2 32s ease-in-out infinite}
@keyframes blob1{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(130px,90px) scale(1.18)}}
@keyframes blob2{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(-110px,-80px) scale(1.12)}}
@media(prefers-reduced-motion:reduce){body::before,body::after{animation:none}}

/* frosted surfaces */
.card,.fcell,.why-c,.step-c,details.faq,.auth-card,.plan-c,.q-card,.qa-c,.subj-c,.ch-row,.lb-row,.pod-c,.book-c,.reader-page,.exam-card,.m-box,.notif-panel,.accordion-item,.chat-box,.tb-chip{
  background:rgba(255,255,255,.58);
  -webkit-backdrop-filter:blur(18px) saturate(170%);
  backdrop-filter:blur(18px) saturate(170%);
  border:1px solid rgba(255,255,255,.78);
  box-shadow:0 8px 32px rgba(31,38,135,.10), inset 0 1px 0 rgba(255,255,255,.95);
}
.m-box{background:rgba(255,255,255,.8)}
.tbl{background:rgba(255,255,255,.55);-webkit-backdrop-filter:blur(16px) saturate(160%);backdrop-filter:blur(16px) saturate(160%);border:1px solid rgba(255,255,255,.7)}
.tbl th{background:rgba(31,35,55,.92)}

/* quiz + practice */
.opt{background:rgba(255,255,255,.5);border-color:rgba(255,255,255,.85);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}
.opt:hover{background:rgba(255,255,255,.75);border-color:#c7cdfe}
.opt.ok{background:rgba(22,163,74,.15);border-color:rgba(22,163,74,.55)}
.opt.bad{background:rgba(220,38,38,.13);border-color:rgba(220,38,38,.5)}
.pal{background:rgba(255,255,255,.55);border-color:rgba(31,35,66,.15)}
.explain{background:rgba(79,70,229,.08);border-color:rgba(79,70,229,.22)}
/* ডার্ক মোড — স্মার্ট অনুশীলন */
.tipbox{background:rgba(245,158,11,.10);border-color:rgba(245,158,11,.30)}
/* ডার্ক মোড — বিভাগ বাছাই */
.grp-bar{background:linear-gradient(135deg,rgba(79,70,229,.12),rgba(124,58,237,.10));border-color:rgba(79,70,229,.26)}
.grp-opt{background:rgba(255,255,255,.03);border-color:rgba(255,255,255,.10)}
.grp-opt:hover{border-color:rgba(129,140,248,.55)}
.grp-opt.on{border-color:#818cf8;background:rgba(79,70,229,.16)}
.cls-opt{background:rgba(255,255,255,.03);border-color:rgba(255,255,255,.10)}
.cls-opt:hover{border-color:rgba(129,140,248,.55)}
.cls-opt.on{border-color:#818cf8;background:rgba(79,70,229,.16);color:#c7d2fe}

.kbd-hint b{background:rgba(79,70,229,.16);border-color:rgba(79,70,229,.30)}
.wrongwrap{background:rgba(220,38,38,.08);border-color:rgba(220,38,38,.24)}
.wrongttl{color:#ff9b91}
.wrongitem{border-top-color:rgba(220,38,38,.22)}
.allright{background:rgba(22,163,74,.10);border-color:rgba(22,163,74,.28);color:#6ee7b7}


/* chat */
.msg.ai,.typing{background:rgba(255,255,255,.62);border:1px solid rgba(255,255,255,.7)}
.chat-inp,.qchips{background:rgba(255,255,255,.42);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}
.qchip{background:rgba(255,255,255,.6);border-color:rgba(255,255,255,.85);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.msg-img{max-width:230px;border-radius:14px;display:block;margin-bottom:8px;border:1px solid rgba(255,255,255,.7)}
.cam-btn{font-size:1.2rem;padding:11px 15px;line-height:1}

/* inputs */
.inp,.phone-wrap,.otp-boxes input{background:rgba(255,255,255,.6);border-color:rgba(31,35,66,.14);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.phone-wrap .cc{background:rgba(255,255,255,.45);border-right-color:rgba(31,35,66,.14)}
.demo-note{background:rgba(255,251,235,.75);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}

/* chips + icons */
.chip{background:rgba(255,255,255,.55);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.7)}
.chip-a{background:rgba(79,70,229,.13);border-color:rgba(79,70,229,.2)}
.fcell .em,.why-c .em,.mini-cards .em,.exam-card .em,.ap-c .em{background:rgba(79,70,229,.12)}

/* navs */
.lnav{background:rgba(255,255,255,.55);-webkit-backdrop-filter:blur(20px) saturate(180%);backdrop-filter:blur(20px) saturate(180%);border-bottom:1px solid rgba(255,255,255,.65)}
.runner-top{background:rgba(255,255,255,.62);-webkit-backdrop-filter:blur(16px) saturate(160%);backdrop-filter:blur(16px) saturate(160%);border-bottom:1px solid rgba(255,255,255,.65)}
.bnav{background:rgba(255,255,255,.74);-webkit-backdrop-filter:blur(20px) saturate(170%);backdrop-filter:blur(20px) saturate(170%);border-top:1px solid rgba(255,255,255,.7)}
.side{background:rgba(17,19,38,.82);-webkit-backdrop-filter:blur(22px) saturate(150%);backdrop-filter:blur(22px) saturate(150%)}
.snav a:hover{background:rgba(255,255,255,.08);color:#fff}
.side-up{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14)}
.notif-item:hover{background:rgba(255,255,255,.45)}

/* buttons */
.btn-o{background:rgba(255,255,255,.5);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-color:rgba(79,70,229,.5)}
.btn-o:hover{background:rgba(255,255,255,.72)}
.btn-g{background:rgba(255,255,255,.35);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.btn-g:hover{background:rgba(255,255,255,.55)}

/* toasts + footer */
.toast{background:rgba(31,35,54,.85);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,.15)}
.footer{background:rgba(15,17,34,.93);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}

/* hero + auth */
.hero{background:transparent}
.hero-float{background:rgba(255,255,255,.68);-webkit-backdrop-filter:blur(14px) saturate(160%);backdrop-filter:blur(14px) saturate(160%);border:1px solid rgba(255,255,255,.85)}
.f-art{background:linear-gradient(135deg,rgba(238,242,255,.5),rgba(250,245,255,.42));border-color:rgba(255,255,255,.72);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}
.auth-right{background:transparent}
.auth-left::before{content:'';position:absolute;width:320px;height:320px;border-radius:50%;background:rgba(255,255,255,.09);top:-90px;right:-70px}
.auth-left::after{content:'';position:absolute;width:260px;height:260px;border-radius:50%;background:rgba(6,182,212,.18);bottom:-90px;left:-70px}
.cta-band{border:1px solid rgba(255,255,255,.35)}
.pod-c.p1{background:linear-gradient(180deg,rgba(255,251,235,.85),rgba(255,255,255,.5))}

/* tabs */
.tabs{background:rgba(255,255,255,.42);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.6)}
.tabs button.on{background:rgba(255,255,255,.92)}

/* app strip (why section) */
.app-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media(max-width:860px){.app-strip{grid-template-columns:repeat(2,1fr)}}
.ap-c{background:rgba(255,255,255,.55);-webkit-backdrop-filter:blur(16px) saturate(170%);backdrop-filter:blur(16px) saturate(170%);border:1px solid rgba(255,255,255,.78);border-radius:20px;padding:22px 14px;text-align:center;box-shadow:0 8px 32px rgba(31,38,135,.10)}
.ap-c .em{width:54px;height:54px;margin:0 auto 10px;border-radius:16px;display:grid;place-items:center;font-size:1.5rem}
.ap-c b{display:block}
.ap-c span{display:block;margin-top:4px}

/* scrollbar */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(79,70,229,.3);border-radius:99px;border:2px solid transparent;background-clip:content-box}
::-webkit-scrollbar-thumb:hover{background:rgba(79,70,229,.5);border:2px solid transparent;background-clip:content-box}

/* ---------- community ---------- */
.composer textarea{resize:vertical;min-height:86px}
.ch-bar{display:flex;gap:8px;flex-wrap:wrap;flex:1;min-width:220px}
.qchip.on{background:var(--grad);color:#fff;border-color:transparent}
.post .p-av{width:40px;height:40px;flex:0 0 40px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:800}
.p-av.sm{width:30px;height:30px;flex-basis:30px;font-size:.8rem}
.post-acts{gap:8px;flex-wrap:wrap}
.pa-btn{background:rgba(255,255,255,.55);border:1px solid rgba(255,255,255,.8);border-radius:99px;padding:6px 14px;font-weight:700;font-size:.85rem;transition:.15s;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.pa-btn:hover{background:rgba(255,255,255,.85)}
.pa-btn.on{background:rgba(79,70,229,.15);border-color:rgba(79,70,229,.45);color:var(--brand-d)}
.replies{margin-top:14px;padding-top:14px;border-top:1px dashed var(--line)}
.r-item{display:flex;gap:10px;margin-bottom:12px}
@media(max-width:560px){.otp-boxes input{width:40px;height:48px;font-size:1.2rem}}

/* ---------- profile view + friends + notif ---------- */
.pf-av{width:76px;height:76px;flex:0 0 76px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;font-size:2rem;font-weight:800;box-shadow:0 10px 26px rgba(79,70,229,.35)}
.pf-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
@media(max-width:560px){.pf-stats{grid-template-columns:repeat(2,1fr)}}
.pf-stats>div{background:rgba(255,255,255,.5);border:1px solid rgba(255,255,255,.75);border-radius:14px;padding:12px;text-align:center;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.pf-stats b{font-size:1.3rem;display:block;line-height:1.3}
.pf-stats span{font-size:.78rem;color:var(--mut)}
.fr-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
a.notif-item{display:flex;gap:12px;padding:12px;border-radius:12px;color:inherit}
a.notif-item:hover{background:rgba(255,255,255,.5)}

/* ---------- direct messages ---------- */
.dm-row{display:flex;align-items:center;gap:14px;color:inherit;flex-wrap:wrap}
.ubadge{background:var(--bad);color:#fff;border-radius:99px;font-size:.7rem;font-weight:800;padding:2px 8px;display:inline-block;margin-top:4px}
.dm-box{padding:0;overflow:hidden;display:flex;flex-direction:column;height:calc(100vh - 225px);min-height:430px}
.dm-head{padding:13px 18px;border-bottom:1px solid rgba(255,255,255,.65);background:rgba(255,255,255,.45);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}
.dm-scroll{flex:1;overflow-y:auto;padding:18px;display:flex;flex-direction:column;gap:10px}
.dm{max-width:78%;padding:10px 14px;border-radius:16px;font-size:.95rem;line-height:1.65;white-space:pre-wrap;word-break:break-word}
.dm.me{align-self:flex-end;background:var(--grad);color:#fff;border-bottom-right-radius:5px;box-shadow:0 4px 14px rgba(79,70,229,.28)}
.dm.them{align-self:flex-start;background:rgba(255,255,255,.66);border:1px solid rgba(255,255,255,.75);border-bottom-left-radius:5px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.dm-meta{display:block;font-size:.64rem;opacity:.78;margin-top:3px;text-align:right}
.dm-inp{display:flex;gap:10px;padding:14px;border-top:1px solid rgba(255,255,255,.65);background:rgba(255,255,255,.45)}
.snav a,.bnav a{position:relative}
.nav-dot{position:absolute;top:4px;right:10px;background:#ef4444;color:#fff;font-size:.62rem;font-weight:800;border-radius:99px;padding:1px 6px;box-shadow:0 2px 6px rgba(239,68,68,.45);z-index:2}

/* ============ PHASE 3: facebook-style profile + activity + progress ============ */
.avx{position:relative;display:inline-grid;place-items:center;width:40px;height:40px;border-radius:50%;overflow:hidden;background:var(--grad);color:#fff;font-weight:800;flex:0 0 auto}
.avx i{font-style:normal;line-height:1}
.avx img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:1}
.avx.p-av.sm{width:30px;height:30px;font-size:.8rem}

/* cover + big avatar */
.pf-new{position:relative}
.pf-cover{height:170px;position:relative}
.pf-body{display:flex;gap:18px;padding:0 20px;flex-wrap:wrap;align-items:flex-end}
.pf-avwrap{position:relative;margin-top:-52px;padding-left:4px}
.avx.pf-bigav{width:118px;height:118px;font-size:2.6rem;border:4px solid #fff;box-shadow:0 10px 26px rgba(79,70,229,.35)}
.pf-title{flex:1;min-width:240px;padding:14px 0}
.photo-btn{position:absolute;right:12px;bottom:12px;background:rgba(255,255,255,.92);color:#1f2937;border:none;border-radius:999px;padding:7px 14px;font-weight:700;font-size:.78rem;cursor:pointer;box-shadow:0 4px 14px rgba(0,0,0,.2);z-index:2}
.photo-btn.av{right:-4px;bottom:-4px;width:38px;height:38px;border-radius:50%;padding:0;display:grid;place-items:center;font-size:1rem}
.photo-btn:hover{background:#fff}

/* stats strip under cover */
.pf-stats2{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;padding:14px 20px 18px;border-top:1px solid var(--line);margin-top:12px}
.pf-stats2>div{text-align:center}
.pf-stats2 b{font-size:1.15rem;display:block;line-height:1.4}
.pf-stats2 span{font-size:.72rem;color:var(--mut)}
@media(max-width:640px){.pf-stats2{grid-template-columns:repeat(3,1fr)}}

/* activity timeline */
.act-row{display:flex;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line);align-items:flex-start}
.act-row:last-child{border-bottom:none}
.act-em{width:36px;height:36px;flex:0 0 36px;border-radius:12px;background:var(--brand-l);display:grid;place-items:center;font-size:1rem}

/* subject progress rows */
.pr-row{padding:10px 0;border-bottom:1px dashed var(--line)}
.pr-row:last-child{border-bottom:none}
.bdg{padding:14px 8px}

/* ============ PHASE 4: community extras (img/poll/save/report/correct) ============ */
.post-img{width:100%;max-height:420px;object-fit:cover;border-radius:14px;cursor:zoom-in;border:1px solid var(--line);display:block}
.poll-box{border:1px solid var(--line);border-radius:14px;padding:12px;background:rgba(255,255,255,.5)}
.poll-opt{display:block;width:100%;text-align:left;background:rgba(255,255,255,.75);border:1.5px solid var(--line);border-radius:10px;padding:9px 12px;margin:6px 0;cursor:pointer;font-weight:600;font-size:.9rem;font-family:inherit;color:inherit}
.poll-opt:hover{border-color:var(--brand);background:#fff}
.poll-opt .k{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--brand-l);color:var(--brand-d);font-size:.78rem;margin-right:8px;font-weight:800}
.poll-res{padding:8px 10px;border-radius:10px}
.poll-res.mine{background:var(--brand-l)}
.poll-res.win .bar i{background:var(--ok)}
.poll-edit input{margin:4px 0}
.r-correct{background:#f0fdf4;border-left:3px solid var(--ok);border-radius:0 10px 10px 0}
.mark-c{border:none;background:var(--brand-l);color:var(--brand-d);border-radius:6px;font-size:.68rem;font-weight:700;padding:3px 9px;cursor:pointer;margin-left:6px;font-family:inherit}
.mark-c:hover{background:var(--brand);color:#fff}
.mark-c.on{background:var(--ok);color:#fff}
#comSearch{border-radius:999px;padding:10px 18px}

/* ============ PHASE 5: true Facebook-style profile layout ============ */
.pf-cover{height:210px}
.pf-headrow{display:flex;gap:18px;padding:0 24px;flex-wrap:wrap;align-items:flex-end}
.pf-avwrap{position:relative;margin-top:-75px}
.avx.pf-bigav{width:150px;height:150px;font-size:3.2rem;border:5px solid #fff;box-shadow:0 12px 30px rgba(79,70,229,.35)}
.pf-title{flex:1;min-width:230px;padding:14px 0 10px}
.pf-title h2{font-size:1.75rem;line-height:1.2}
.pf-actions{padding:14px 0 10px;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.pf-nav{display:flex;flex-wrap:wrap;gap:2px;border-top:1px solid var(--line);margin-top:8px;padding:0 8px}
.pf-nav button{background:none;border:none;border-bottom:3px solid transparent;padding:12px 12px;font-family:inherit;font-weight:700;font-size:.84rem;color:var(--mut);cursor:pointer;white-space:nowrap;flex:1 0 auto;text-align:center}
.pf-nav button.on{color:var(--brand-d);border-bottom-color:var(--brand)}
.pf-cols{display:grid;grid-template-columns:340px minmax(0,1fr);gap:16px;align-items:start}
@media(max-width:880px){.pf-cols{grid-template-columns:1fr}}
@media(max-width:640px){
  .pf-cover{height:140px}
  .pf-avwrap{margin-top:-55px}
  .avx.pf-bigav{width:110px;height:110px;font-size:2.4rem;border-width:4px}
  .pf-title h2{font-size:1.35rem}
  .pf-headrow{padding:0 14px}
}
.ab-row{font-size:.88rem;padding:6px 0;color:#3a3f52;line-height:1.5}
.ph-grid-sm{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.ph-grid-sm img,.photo-grid img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:10px;cursor:zoom-in;display:block}
.photo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.fr-grid-sm{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.fr-mini{display:flex;flex-direction:column;align-items:center;gap:5px;text-align:center;color:inherit;padding:6px 2px;border-radius:10px}
.fr-mini:hover{background:var(--brand-l)}
.avx.fr-mini-av{width:64px;height:64px;font-size:1.4rem}
.fr-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:12px}
.fr-card{display:flex;flex-direction:column;align-items:center;text-align:center;padding:16px 10px;color:inherit}
.avx.fr-card-av{width:84px;height:84px;font-size:1.9rem}
.pf-composer{align-items:flex-start;gap:10px}
.pf-composer textarea{flex:1;min-width:0}

/* perf + activity sidebar cards, tab wrap */
.perf-mini{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.perf-mini>div{text-align:center;background:var(--brand-l);border-radius:10px;padding:8px 4px}
.perf-mini b{display:block;font-size:.95rem;line-height:1.3}
.perf-mini span{font-size:.66rem;color:var(--mut)}
.pf-more{background:none;border:none;color:var(--brand);cursor:pointer;font-family:inherit;font-weight:700;font-size:.78rem;padding:0}
.pf-more:hover{text-decoration:underline}

/* friend suggestions */
.sug-c{display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center;background:var(--brand-l);border-radius:14px;padding:14px 12px;min-width:132px;flex:0 1 152px}
.avx.sug-av{width:60px;height:60px;font-size:1.3rem}
.sug-name{max-width:132px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:inherit}
/* ============================================================
   EDUMIXA ADMIN PANEL — Glassmorphism (Dark Navy + Deep Purple)
   Single authoritative admin stylesheet. Reference-matched.
   ============================================================ */

.adm{
  --a-line:rgba(130,160,255,.22);
  --a-line2:rgba(170,150,255,.42);
  --a-txt:#eef1ff; --a-mut:#a3aad4;
  --a-r:18px;
  position:relative; min-height:100vh; width:100%;
  color:var(--a-txt);
  background-color:#080b22;           /* solid base: never lets white show through */
  font-feature-settings:"ss01";
}
/* fixed gradient wash — stays put while the page scrolls */
.adm:before{
  content:''; position:fixed; inset:0; z-index:0; pointer-events:none;
  background:
    radial-gradient(1150px 640px at 80% -14%, rgba(139,70,255,.40) 0%, transparent 62%),
    radial-gradient(980px 600px at 4% 2%, rgba(58,96,255,.26) 0%, transparent 58%),
    radial-gradient(820px 720px at 98% 90%, rgba(168,85,247,.18) 0%, transparent 60%),
    linear-gradient(168deg,#140c34 0%,#0c0f2c 46%,#080b22 100%);
}
.adm>*{position:relative}
.adm *{box-sizing:border-box}
.adm ::-webkit-scrollbar{width:9px;height:9px}
.adm ::-webkit-scrollbar-thumb{background:rgba(139,92,246,.42);border-radius:99px}
.adm ::-webkit-scrollbar-track{background:transparent}

/* ---------- merged shell: sidebar + header = one continuous glass panel ---------- */
.adm-root{display:block;min-height:100vh}
.adm-sidebar{
  position:fixed; left:0; top:0; bottom:0; width:252px; z-index:60;
  display:flex; flex-direction:column;
  background:linear-gradient(170deg,rgba(64,84,180,.26) 0%,rgba(28,32,88,.34) 100%);
  border-right:1px solid var(--a-line);
  backdrop-filter:blur(22px); -webkit-backdrop-filter:blur(22px);
  box-shadow:14px 0 44px rgba(4,6,26,.34);
  overflow:hidden;
}
.adm-main{margin-left:252px;min-height:100vh;display:flex;flex-direction:column}
.adm-top{
  position:sticky; top:0; z-index:40; flex:0 0 auto;
  display:flex; align-items:center; gap:14px;
  height:74px; padding:0 22px;
  background:linear-gradient(170deg,rgba(64,84,180,.26) 0%,rgba(30,34,92,.32) 100%);
  border-bottom:1px solid var(--a-line);
  backdrop-filter:blur(22px); -webkit-backdrop-filter:blur(22px);
}
/* brand sits at the top of the sidebar, aligned to the header's baseline */
.adm-brand{
  display:flex; align-items:center; gap:11px; flex:0 0 auto;
  height:74px; padding:0 16px; text-decoration:none; color:#fff;
  border-bottom:1px solid var(--a-line);
}
.adm-brand-mark{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;flex:0 0 auto;
  font-weight:800;font-size:.95rem;letter-spacing:.5px;color:#fff;
  background:linear-gradient(140deg,#a855f7,#6d28d9 60%,#4338ca);
  box-shadow:0 6px 20px rgba(139,92,246,.45), inset 0 1px 0 rgba(255,255,255,.28);
}
.adm-brand-name{font-size:1.24rem;font-weight:800;letter-spacing:.4px;color:#fff;white-space:nowrap}
.adm-brand-name b{font-weight:800;color:#fff}
/* compact brand inside the header — only when the sidebar is off-canvas */
.adm-brand-sm{display:none;height:auto;padding:0;border:0}
.adm-brand-sm .adm-brand-mark{width:36px;height:36px;border-radius:11px;font-size:.82rem}
.adm-brand-sm .adm-brand-name{font-size:1.06rem}
.adm-burger{
  display:none; width:40px;height:40px;border-radius:11px;flex:0 0 auto;
  place-items:center;font-size:1.1rem;cursor:pointer;
  background:rgba(255,255,255,.07);border:1px solid var(--a-line);color:#cfd2f5;
  transition:.18s;
}
.adm-burger:hover{background:rgba(139,92,246,.20);border-color:var(--a-line2);color:#fff}
.adm-top-sp{flex:1}
.adm-update{
  display:inline-flex;align-items:center;gap:8px;white-space:nowrap;cursor:pointer;
  padding:10px 20px;border-radius:999px;font-weight:700;font-size:.88rem;color:#fff;
  border:1px solid rgba(190,160,255,.45);
  background:linear-gradient(120deg,#7c3aed,#6d28d9 55%,#5b21b6);
  box-shadow:0 8px 24px rgba(124,58,237,.40), inset 0 1px 0 rgba(255,255,255,.22);
  transition:.18s;
}
.adm-update:hover{transform:translateY(-1px);box-shadow:0 12px 30px rgba(124,58,237,.55)}
.adm-update:disabled{opacity:.6;cursor:default;transform:none}
.adm-body{flex:1;width:100%;max-width:1480px;padding:20px 22px 60px}
.adm-workarea{min-width:0}

/* ---------- sidebar nav ---------- */
/* logo + MANAGEMENT = one locked block, never scrolls */
.adm-side-head{flex:0 0 auto}
.adm-side-title{
  font-size:.66rem;font-weight:800;letter-spacing:.20em;color:#8f93bf;
  padding:14px 18px 10px;
  background:linear-gradient(180deg,rgba(139,92,246,.10),transparent);
}
.adm-side-scroll{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:2px 12px 6px}
.adm-side-scroll::-webkit-scrollbar{width:6px}
/* soft fade so items slide under the locked label instead of cutting hard */
.adm-side-scroll{-webkit-mask-image:linear-gradient(180deg,transparent 0,#000 10px,#000 calc(100% - 14px),transparent 100%);
  mask-image:linear-gradient(180deg,transparent 0,#000 10px,#000 calc(100% - 14px),transparent 100%)}
.adm-sidebar .atab{
  width:100%;display:flex;align-items:center;gap:11px;
  text-align:left;padding:11px 13px;margin:3px 0;
  border:1px solid transparent;border-radius:13px;
  background:transparent;color:#c3c8ee;font-weight:600;font-size:.9rem;
  cursor:pointer;transition:.18s;line-height:1.35;
}
.adm-sidebar .atab em{font-style:normal;font-size:1.05rem;flex:0 0 auto;width:20px;text-align:center}
.adm-sidebar .atab:hover{background:rgba(139,92,246,.14);border-color:var(--a-line);color:#fff}
.adm-sidebar .atab.on{
  color:#fff;
  background:linear-gradient(110deg,rgba(139,92,246,.95),rgba(109,40,217,.85));
  border-color:rgba(196,166,255,.45);
  box-shadow:0 8px 22px rgba(124,58,237,.42), inset 0 1px 0 rgba(255,255,255,.22);
}
.adm-side-foot{flex:0 0 auto;padding:12px;border-top:1px solid var(--a-line);display:grid;gap:6px}
.adm-side-foot a,.adm-side-foot button{
  display:block;width:100%;text-align:left;padding:9px 13px;border-radius:11px;
  background:transparent;border:1px solid transparent;color:#8f93bf;
  font-size:.82rem;font-weight:600;text-decoration:none;cursor:pointer;transition:.18s;
}
.adm-side-foot a:hover,.adm-side-foot button:hover{background:rgba(255,255,255,.06);color:#fff}

/* ---------- generic glass surfaces ---------- */
.adm-card,.adm-panel,.adm-stat,.adm-pcard{
  background:linear-gradient(158deg,rgba(74,96,196,.26) 0%,rgba(38,44,110,.30) 55%,rgba(24,26,72,.34) 100%);
  border:1px solid var(--a-line);
  border-radius:var(--a-r);
  backdrop-filter:blur(16px); -webkit-backdrop-filter:blur(16px);
  box-shadow:0 14px 34px rgba(4,6,26,.42), inset 0 1px 0 rgba(255,255,255,.10);
  color:var(--a-txt);
}
.adm-card{padding:20px}
.adm-panel{padding:20px}
.adm-pcard{padding:14px 16px;margin-bottom:10px}
.adm-card h3,.adm-panel h3{margin:0 0 4px;color:#fff;font-size:1.02rem;letter-spacing:-.01em}
.adm .muted{color:var(--a-mut)}
.adm-card:hover,.adm-panel:hover{border-color:var(--a-line2)}

/* ---------- dashboard: stat cards ---------- */
.adm-dash{display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,.44fr);gap:16px;align-items:start}
.adm-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin:0}
.adm-stat{
  padding:16px 12px; text-align:center; min-height:132px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  transition:.2s;
}
.adm-stat:hover{transform:translateY(-3px);border-color:var(--a-line2);box-shadow:0 18px 40px rgba(88,40,190,.34)}
.adm-stat i{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;
  font-style:normal;font-size:1.18rem;
  background:rgba(255,255,255,.08);border:1px solid var(--a-line);
}
.adm-stat b{display:block;font-size:1.72rem;font-weight:800;color:#fff;line-height:1.1}
.adm-stat span{font-size:.78rem;color:var(--a-mut);font-weight:600}

/* ---------- dashboard: MANAGEMENT hero ---------- */
.adm-hero{
  position:relative; overflow:hidden; min-height:296px;
  border-radius:20px; padding:26px 22px;
  display:flex;flex-direction:column;align-items:center;justify-content:flex-end;text-align:center;
  background:
    radial-gradient(520px 320px at 26% 22%, rgba(168,85,247,.34) 0%, transparent 66%),
    radial-gradient(480px 340px at 86% 74%, rgba(59,130,246,.28) 0%, transparent 62%),
    linear-gradient(150deg,rgba(70,90,190,.24),rgba(26,30,80,.34));
  border:1px solid var(--a-line);
  backdrop-filter:blur(16px); -webkit-backdrop-filter:blur(16px);
  box-shadow:0 18px 44px rgba(5,3,20,.4), inset 0 1px 0 rgba(255,255,255,.08);
}
.adm-hero-art{position:absolute;inset:0;pointer-events:none;opacity:.95}
.adm-hero-badge{
  width:54px;height:54px;border-radius:16px;display:grid;place-items:center;font-size:1.4rem;
  background:rgba(255,255,255,.10);border:1px solid rgba(190,160,255,.34);
  box-shadow:0 8px 24px rgba(124,58,237,.34);margin-bottom:12px;position:relative;
}
.adm-hero h2{
  margin:0;font-size:1.72rem;font-weight:800;letter-spacing:.09em;color:#fff;position:relative;
  text-shadow:0 4px 26px rgba(168,85,247,.55);
}
.adm-hero p{margin:7px 0 0;font-size:.84rem;color:#c3c8ee;position:relative}

/* ---------- dashboard: lower grid ---------- */
.adm-dash-lower{display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,.44fr);gap:16px;align-items:start;margin-top:16px}
.adm-stack{display:grid;gap:16px;align-content:start}
.adm-ttl{display:flex;align-items:center;gap:10px;margin-bottom:4px}
.adm-ttl i{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;font-style:normal;font-size:1rem;
  background:rgba(255,255,255,.08);border:1px solid var(--a-line);flex:0 0 auto;
}
.adm-ttl b{font-size:1.02rem;color:#fff;font-weight:700}
.adm-sub{margin:0 0 14px 46px;font-size:.79rem;color:var(--a-mut);line-height:1.6}

/* quick actions */
.adm-quick{display:grid;grid-template-columns:repeat(2,1fr);gap:11px;margin-top:14px}
.adm-quick button{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:9px;
  padding:18px 10px;border-radius:15px;cursor:pointer;transition:.2s;
  border:1px solid var(--a-line);
  background:linear-gradient(155deg,rgba(74,96,196,.24),rgba(26,30,80,.32));
  color:#e7e9ff;font-weight:600;font-size:.79rem;text-align:center;line-height:1.4;
}
.adm-quick button i{font-style:normal;font-size:1.35rem}
.adm-quick button:hover{transform:translateY(-3px);border-color:var(--a-line2);box-shadow:0 14px 30px rgba(88,40,190,.36)}
.adm-quick button.q1{background:linear-gradient(155deg,rgba(139,92,246,.34),rgba(48,32,110,.34))}
.adm-quick button.q2{background:linear-gradient(155deg,rgba(56,130,246,.34),rgba(22,44,110,.34))}
.adm-quick button.q3{background:linear-gradient(155deg,rgba(16,185,129,.28),rgba(18,52,74,.34))}
.adm-quick button.q4{background:linear-gradient(155deg,rgba(245,158,11,.26),rgba(70,48,20,.34))}

/* management tips */
.adm-tips{list-style:none;margin:14px 0 0;padding:0;display:grid;gap:13px}
.adm-tips li{display:flex;align-items:center;gap:11px;font-size:.83rem;color:#cdd1f0;line-height:1.5}
.adm-tips li s{width:11px;height:11px;border-radius:50%;flex:0 0 auto;text-decoration:none}
.adm-tips li:nth-child(1) s{background:#34d399;box-shadow:0 0 12px rgba(52,211,153,.75)}
.adm-tips li:nth-child(2) s{background:#a78bfa;box-shadow:0 0 12px rgba(167,139,250,.75)}
.adm-tips li:nth-child(3) s{background:#60a5fa;box-shadow:0 0 12px rgba(96,165,250,.75)}
.adm-tips li:nth-child(4) s{background:#f472b6;box-shadow:0 0 12px rgba(244,114,182,.75)}

/* announcement toggle pill */
.adm-state{display:inline-flex;align-items:center;gap:8px;font-size:.79rem;color:var(--a-mut);font-weight:600}
.adm-state s{width:15px;height:15px;border-radius:50%;text-decoration:none;border:2px solid #6f74a5;display:inline-block}
.adm-state.on{color:#6ee7b7}
.adm-state.on s{border-color:#34d399;background:#34d399;box-shadow:0 0 12px rgba(52,211,153,.8)}

/* ---------- forms & controls ---------- */
.adm-inp{
  width:100%;padding:12px 15px;border-radius:13px;font-size:.9rem;font-family:inherit;outline:none;
  background:rgba(10,14,44,.55);border:1px solid var(--a-line);color:#fff;transition:.18s;
}
.adm-inp:focus{border-color:rgba(167,139,250,.85);box-shadow:0 0 0 3px rgba(139,92,246,.22);background:rgba(16,20,56,.72)}
.adm-inp::placeholder{color:#7d82ad}
.adm textarea.adm-inp{resize:vertical;line-height:1.7;min-height:86px}
.adm select.adm-inp option{background:#191537;color:#fff}
.adm .btn{border-radius:12px;font-family:inherit;cursor:pointer;transition:.18s;font-weight:700}
.adm .btn-p{
  color:#fff;border:1px solid rgba(190,160,255,.45);
  background:linear-gradient(120deg,#8b5cf6,#6d28d9);
  box-shadow:0 8px 22px rgba(124,58,237,.42), inset 0 1px 0 rgba(255,255,255,.2);
}
.adm .btn-p:hover{transform:translateY(-1px);box-shadow:0 12px 28px rgba(124,58,237,.55)}
.adm .btn-o{background:rgba(26,32,84,.60);color:#e7e9ff;border:1px solid var(--a-line)}
.adm .btn-o:hover{background:rgba(139,92,246,.20);border-color:var(--a-line2);color:#fff}
.adm .btn:disabled{opacity:.55;cursor:default;transform:none}

/* ---------- tables ---------- */
.adm-tbl-wrap{overflow-x:auto;margin-top:14px;border:1px solid var(--a-line);border-radius:15px;background:rgba(14,18,52,.45)}
.adm-tbl{width:100%;border-collapse:collapse;font-size:.86rem;min-width:680px}
.adm-tbl thead{background:rgba(139,92,246,.16)}
.adm-tbl th{color:#c4b5fd;text-align:left;font-weight:700;font-size:.72rem;text-transform:uppercase;letter-spacing:.06em}
.adm-tbl th,.adm-tbl td{padding:12px 13px;border-bottom:1px solid var(--a-line);vertical-align:middle;color:var(--a-txt)}
.adm-tbl tr:last-child td{border-bottom:0}
.adm-tbl tbody tr:hover{background:rgba(139,92,246,.10)}

/* ---------- misc admin bits ---------- */
.adm-banner{background:rgba(244,63,94,.13);border:1px solid rgba(244,63,94,.40);color:#ffd7e0;padding:11px 14px;border-radius:14px;margin:0 0 14px;font-size:.82rem}
.adm-banner .adm-inp{padding:8px 12px;font-size:.82rem;border-radius:10px}
.adm-banner .btn{padding:8px 14px;font-size:.8rem}
.adm-err{background:rgba(244,63,94,.14);border:1px solid rgba(244,63,94,.42);color:#ffd7e0;padding:10px 13px;border-radius:11px;margin:8px 0;font-size:.86rem}
.adm-tag{padding:3px 11px;border-radius:999px;font-size:.71rem;font-weight:700;white-space:nowrap;display:inline-block}
.adm-tag.ok{background:rgba(16,185,129,.20);color:#6ee7b7}
.adm-tag.bad{background:rgba(244,63,94,.20);color:#fda4af}
.adm-tag.warn{background:rgba(245,158,11,.20);color:#fcd34d}
.adm-reps{margin-top:10px;padding:11px 13px;background:rgba(0,0,0,.24);border-radius:13px;border:1px solid var(--a-line)}
.adm-friend{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;background:rgba(139,92,246,.18);border:1px solid var(--a-line2);font-size:.74rem;margin:3px 4px 0 0}
.adm-friend .adm-fx{cursor:pointer;color:#fda4af;font-weight:700}
.adm-ov{position:fixed;inset:0;background:rgba(6,4,20,.74);backdrop-filter:blur(6px);z-index:80;display:flex;align-items:center;justify-content:center;padding:16px}
.adm-modal{
  background:linear-gradient(160deg,#1b1440,#140f33);border:1px solid var(--a-line2);border-radius:20px;
  padding:22px;width:100%;max-width:460px;max-height:88vh;overflow-y:auto;color:var(--a-txt);
  box-shadow:0 30px 80px rgba(0,0,0,.6);
}
.adm-x{background:rgba(255,255,255,.1);border:none;color:#fff;width:30px;height:30px;border-radius:9px;cursor:pointer}
.an-row{display:flex;align-items:center;gap:8px;margin:6px 0}
.an-d{width:46px;flex:0 0 46px}
.an-track{flex:1;height:14px;background:rgba(255,255,255,.07);border-radius:99px;overflow:hidden}
.an-bar{height:100%;border-radius:99px;min-width:2px;transition:width .4s}

/* ---------- login ---------- */
.adm-login{display:flex;justify-content:center;padding:9vh 14px}
.adm-login .adm-card{width:100%;max-width:400px;padding:30px}

/* ---------- page header (wayfinding) ---------- */
.adm-page-head{margin:2px 0 18px}
.adm-crumb{font-size:.68rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:#8f93bf}
.adm-crumb em{font-style:normal;color:#6f74a5;margin:0 4px}
.adm-page-head h1{margin:6px 0 3px;font-size:1.5rem;font-weight:800;color:#fff;letter-spacing:-.01em}
.adm-page-head p{margin:0;font-size:.84rem;color:var(--a-mut)}

/* ---------- KPI row: 4 primary metrics, headline + context ---------- */
.adm-kpis{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:16px}
.adm-kpi{
  padding:16px 18px;border-radius:var(--a-r);
  background:linear-gradient(158deg,rgba(74,96,196,.26) 0%,rgba(38,44,110,.30) 55%,rgba(24,26,72,.34) 100%);
  border:1px solid var(--a-line);
  backdrop-filter:blur(16px); -webkit-backdrop-filter:blur(16px);
  box-shadow:0 14px 34px rgba(4,6,26,.42), inset 0 1px 0 rgba(255,255,255,.10);
  transition:.2s;
}
.adm-kpi:hover{transform:translateY(-3px);border-color:var(--a-line2);box-shadow:0 18px 40px rgba(88,40,190,.34)}
.adm-kpi-top{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:14px}
.adm-kpi-top i{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  font-style:normal;font-size:1.12rem;border:1px solid var(--a-line);flex:0 0 auto;
}
.adm-kpi b{display:block;font-size:2rem;font-weight:800;color:#fff;line-height:1.05;letter-spacing:-.02em}
.adm-kpi>span{display:block;margin-top:3px;font-size:.8rem;color:var(--a-mut);font-weight:600}
/* semantic colour: only meaningful change is coloured */
.adm-delta{font-size:.7rem;font-weight:700;padding:4px 9px;border-radius:999px;white-space:nowrap;
  background:rgba(255,255,255,.07);color:#9aa0c9;border:1px solid var(--a-line)}
.adm-delta.up{background:rgba(16,185,129,.16);color:#6ee7b7;border-color:rgba(16,185,129,.34)}
.adm-delta.down{background:rgba(244,63,94,.16);color:#fda4af;border-color:rgba(244,63,94,.34)}

/* ---------- secondary metrics: compact strip ---------- */
.adm-minis{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:16px 0}
.adm-mini{
  display:flex;align-items:center;gap:10px;padding:12px 14px;border-radius:14px;
  background:linear-gradient(158deg,rgba(74,96,196,.18),rgba(24,26,72,.26));
  border:1px solid var(--a-line);
}
.adm-mini i{font-style:normal;font-size:1.35rem;flex:0 0 auto}
.adm-mini b{font-size:1.5rem;font-weight:800;color:#fff;line-height:1.1}
.adm-mini span{font-size:.82rem;color:#b9bedf;display:block;margin-top:3px;line-height:1.4}
.adm-mini>div{min-width:0}

/* ---------- one chart: 14-day activity ---------- */
.adm-legend{margin-left:auto;display:flex;align-items:center;gap:12px;font-size:.72rem;color:var(--a-mut);font-weight:600}
.adm-legend s{width:9px;height:9px;border-radius:3px;text-decoration:none;display:inline-block;margin-right:4px}
.adm-legend .l1{background:#a855f7}
.adm-legend .l2{background:#38bdf8}
.adm-chart{display:flex;align-items:flex-end;gap:6px;height:190px;margin-top:18px;padding-top:6px}
.adm-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:7px;height:100%;min-width:0}
.adm-col-bars{flex:1;width:100%;display:flex;align-items:flex-end;justify-content:center;gap:3px}
.adm-col-bars i{width:46%;max-width:16px;min-height:3px;border-radius:5px 5px 2px 2px;transition:.25s;display:block}
.adm-col-bars .b1{background:linear-gradient(180deg,#c084fc,#7c3aed)}
.adm-col-bars .b2{background:linear-gradient(180deg,#7dd3fc,#2563eb)}
.adm-col:hover .adm-col-bars i{filter:brightness(1.25)}
.adm-col>span{font-size:.65rem;color:#7d82ad;font-weight:600}

/* ---------- list panels (recent / top) ---------- */
.adm-more{margin-left:auto;background:transparent;border:0;color:#a78bfa;font-size:.76rem;font-weight:700;cursor:pointer;padding:4px 6px;border-radius:8px;font-family:inherit}
.adm-more:hover{background:rgba(139,92,246,.16);color:#fff}
.adm-list{display:grid;gap:6px;margin-top:14px}
.adm-list-row{display:flex;align-items:center;gap:11px;padding:9px 11px;border-radius:12px;transition:.16s}
.adm-list-row:hover{background:rgba(139,92,246,.12)}
.adm-ava{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;flex:0 0 auto;
  font-weight:800;font-size:.86rem;color:#fff;background:linear-gradient(140deg,#a855f7,#4338ca)}
.adm-rank{width:28px;height:28px;border-radius:9px;display:grid;place-items:center;flex:0 0 auto;
  font-weight:800;font-size:.78rem;color:#cdd1f0;background:rgba(255,255,255,.07);border:1px solid var(--a-line)}
.adm-rank.r1{background:rgba(245,158,11,.22);color:#fcd34d;border-color:rgba(245,158,11,.4)}
.adm-rank.r2{background:rgba(148,163,184,.20);color:#e2e8f0}
.adm-rank.r3{background:rgba(180,83,9,.22);color:#fdba74}
.adm-list-main{flex:1;min-width:0}
.adm-list-main b{display:block;font-size:.86rem;color:#fff;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.adm-list-main small{display:block;font-size:.72rem;color:var(--a-mut);margin-top:1px}
.adm-list-side{font-size:.76rem;color:var(--a-mut);font-weight:600;flex:0 0 auto}

/* ---------- empty state (designed, not blank) ---------- */
.adm-empty{text-align:center;padding:34px 18px;color:var(--a-mut)}
.adm-empty span{font-size:2rem;display:block;opacity:.7;margin-bottom:8px}
.adm-empty b{display:block;color:#dfe2fa;font-size:.92rem;margin-bottom:4px}
.adm-empty p{margin:0;font-size:.79rem;line-height:1.6}

/* ---------- loading skeleton ---------- */
.adm-skel-wrap{display:grid;gap:14px}
.adm-skel-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.adm-skel-row:nth-child(2){grid-template-columns:1.6fr 1fr}
.adm-skel{border-radius:var(--a-r);border:1px solid var(--a-line);
  background:linear-gradient(100deg,rgba(74,96,196,.16) 30%,rgba(139,92,246,.26) 50%,rgba(74,96,196,.16) 70%);
  background-size:220% 100%;animation:admShim 1.25s linear infinite}
.adm-skel.k{height:122px}
.adm-skel.c{height:290px}
@keyframes admShim{from{background-position:180% 0}to{background-position:-40% 0}}

/* ---------- responsive ---------- */
@media(max-width:1380px){
  .adm-dash,.adm-dash-lower{grid-template-columns:minmax(0,1fr) minmax(280px,.42fr)}
}
@media(max-width:1320px){
  .adm-minis{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media(max-width:1220px){
  .adm-dash,.adm-dash-lower{grid-template-columns:1fr}
  .adm-kpis{grid-template-columns:repeat(2,minmax(0,1fr))}
  .adm-hero{min-height:200px}
  .adm-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
}
@media(max-width:1080px){
  .adm-sidebar{transform:translateX(-102%);transition:transform .24s ease;box-shadow:18px 0 60px rgba(4,6,26,.6)}
  .adm.adm-mobile-open .adm-sidebar{transform:translateX(0)}
  .adm.adm-mobile-open:after{content:'';position:fixed;inset:0;background:rgba(6,4,20,.62);z-index:50}
  .adm-main{margin-left:0}
  .adm-burger{display:grid}
  .adm-brand-sm{display:flex}
  .adm-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media(max-width:860px){
  .adm-top{height:66px;padding:0 14px;gap:10px}
  .adm-brand{height:66px}
  .adm-brand-sm .adm-brand-name{font-size:.98rem}
  .adm-update span{display:none}
  .adm-update{padding:10px 14px}
  .adm-body{padding:14px 14px 50px}
  .adm-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}
  .adm-kpis{grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}
  .adm-kpi{padding:14px}
  .adm-kpi b{font-size:1.6rem}
  .adm-minis{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .adm-chart{height:150px}
  .adm-col>span{font-size:.58rem}
  .adm-page-head h1{font-size:1.2rem}
  .adm-skel-row,.adm-skel-row:nth-child(2){grid-template-columns:repeat(2,1fr)}
  .adm-legend{width:100%;margin:6px 0 0}
  .adm-stat{min-height:112px;padding:14px 8px}
  .adm-stat b{font-size:1.44rem}
  .adm-card,.adm-panel{padding:16px}
  .adm-hero h2{font-size:1.4rem}
  .adm-sidebar{width:246px}
}
@media(max-width:480px){
  .adm-kpis{grid-template-columns:1fr}
  .adm-minis{grid-template-columns:1fr}
  .adm-quick{grid-template-columns:1fr}
  .adm-sub{margin-left:0}
  .adm-brand-sm .adm-brand-name{display:none}
}

/* ==================== NCTB পাঠ্যবই ==================== */
.nctb-promo{display:flex;align-items:center;gap:14px;padding:16px 18px;border-radius:16px;
  background:linear-gradient(120deg,rgba(124,58,237,.16),rgba(37,99,235,.13));
  border:1px solid rgba(139,92,246,.30);text-decoration:none;color:inherit;transition:.18s}
.nctb-promo:hover{transform:translateY(-2px);border-color:rgba(139,92,246,.55);
  box-shadow:0 10px 28px rgba(76,29,149,.22)}
.nctb-promo-em{font-size:1.9rem;line-height:1}
.nctb-promo span span{display:block}
.nctb-promo-go{margin-left:auto;font-size:1.3rem;opacity:.65}
.nctb-crumb{font-size:.82rem;opacity:.72;margin-bottom:14px}
.nctb-crumb a{color:inherit;text-decoration:none;border-bottom:1px dotted currentColor}
.nctb-lv-grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(180px,1fr))}
.nctb-lv{display:flex;flex-direction:column;gap:5px;padding:20px 16px;border-radius:16px;text-decoration:none;
  color:inherit;background:rgba(255,255,255,.045);border:1px solid rgba(148,163,184,.20);transition:.18s}
.nctb-lv:hover{transform:translateY(-3px);background:rgba(139,92,246,.13);border-color:rgba(139,92,246,.45)}
.nctb-lv-em{font-size:1.8rem}
.nctb-cls-grid{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}
.nctb-cls{display:flex;align-items:center;gap:12px;padding:16px;border-radius:14px;text-decoration:none;color:inherit;
  background:rgba(255,255,255,.045);border:1px solid rgba(148,163,184,.20);transition:.18s}
.nctb-cls:hover{background:rgba(139,92,246,.13);border-color:rgba(139,92,246,.45)}
.nctb-cls-em{font-size:1.5rem}
.nctb-grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
.nctb-card{text-decoration:none;color:inherit;display:block;border-radius:14px;overflow:hidden;
  background:rgba(255,255,255,.05);border:1px solid rgba(148,163,184,.20);transition:.18s}
.nctb-card:hover{transform:translateY(-4px);border-color:rgba(139,92,246,.5);
  box-shadow:0 14px 30px rgba(12,10,30,.38)}
.nctb-cov{position:relative;aspect-ratio:3/4;background:rgba(15,23,42,.55);display:flex;
  align-items:center;justify-content:center;overflow:hidden}
.nctb-cov img{width:100%;height:100%;object-fit:cover;display:block}
.nctb-fb{display:none;font-size:2.4rem;opacity:.5}
.nctb-nocov .nctb-fb,.nctb-cov.nctb-nocov .nctb-fb{display:block}
.nctb-meta{padding:10px 11px}
.nctb-meta b{display:block;line-height:1.35;margin-bottom:3px}
.nctb-detail{display:grid;gap:18px;grid-template-columns:minmax(0,1.6fr) minmax(280px,1fr);align-items:start}
.nctb-read{padding:0;overflow:hidden}
.nctb-read iframe{width:100%;height:76vh;min-height:460px;border:0;display:block;background:#0b1020}
.nctb-ch{margin:0;padding-left:0;list-style:none;counter-reset:none}
.nctb-ch li{display:flex;gap:10px;align-items:baseline;padding:7px 0;
  border-bottom:1px solid rgba(148,163,184,.14)}
.nctb-ch li:last-child{border-bottom:0}
.nctb-chn{min-width:26px;font-weight:700;opacity:.75}
.nctb-ch li span:nth-child(2){flex:1}
.nctb-spin{width:34px;height:34px;margin:0 auto;border-radius:50%;
  border:3px solid rgba(148,163,184,.25);border-top-color:rgba(139,92,246,.9);animation:nctbspin .8s linear infinite}
@keyframes nctbspin{to{transform:rotate(360deg)}}
@media(max-width:900px){
  .nctb-detail{grid-template-columns:1fr}
  .nctb-read iframe{height:60vh;min-height:360px}
  .nctb-grid{grid-template-columns:repeat(auto-fill,minmax(130px,1fr))}
}

/* ============ অ্যাডমিন: বিষয় ও অধ্যায় ব্যবস্থাপনা ============ */
.pc-guide{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:8px;margin:14px 0 4px}
.pc-g{display:flex;gap:9px;align-items:flex-start;padding:10px 12px;border-radius:11px;
  background:rgba(139,92,246,.08);border:1px solid rgba(139,92,246,.20);font-size:.83rem;line-height:1.6}
.pc-g b{flex:0 0 22px;height:22px;border-radius:50%;background:rgba(139,92,246,.45);color:#fff;
  display:grid;place-items:center;font-size:.76rem}
.pc-g em{font-style:normal;color:#c4b5fd;font-weight:700}
.pc-sum{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.pc-chip{padding:5px 12px;border-radius:999px;font-size:.82rem;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12)}
.pc-chip b{color:#c4b5fd}

.pc-sub{margin:10px 0;border-radius:15px;overflow:hidden;
  background:rgba(255,255,255,.035);border:1px solid rgba(255,255,255,.10)}
.pc-sub.off{opacity:.55}
.pc-head{display:flex;align-items:center;gap:12px;padding:14px 16px;cursor:pointer;transition:.15s}
.pc-head:hover{background:rgba(139,92,246,.10)}
.pc-caret{color:#a78bfa;font-size:.9rem;width:12px}
.pc-emo{font-size:1.5rem;line-height:1}
.pc-titles{flex:1;min-width:0}
.pc-titles b{font-size:1.02rem;display:block}
.pc-meta{font-size:.8rem;color:#9aa0c8;margin-top:3px;display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.pc-open{font-size:.8rem;color:#a78bfa;white-space:nowrap}
.pc-badge{padding:2px 9px;border-radius:999px;font-size:.72rem;
  background:rgba(96,165,250,.16);border:1px solid rgba(96,165,250,.34);color:#bfdbfe}
.pc-badge.all{background:rgba(34,197,94,.14);border-color:rgba(34,197,94,.34);color:#bbf7d0}
.pc-badge.off{background:rgba(239,68,68,.14);border-color:rgba(239,68,68,.34);color:#fecaca}

.pc-body{padding:4px 16px 16px;border-top:1px solid rgba(255,255,255,.08)}
.pc-fields{display:flex;gap:12px;flex-wrap:wrap;margin-top:12px}
.pc-f{display:block;flex:1;min-width:190px}
.pc-f>span{display:block;font-size:.78rem;color:#9aa0c8;margin-bottom:5px;font-weight:600}
.pc-f-sm{flex:0 0 130px;min-width:110px}
.pc-sw{display:inline-flex;align-items:center;gap:7px;padding:11px 13px;border-radius:12px;font-size:.85rem;
  background:rgba(10,14,44,.5);border:1px solid var(--a-line)}
.pc-grps{display:flex;gap:8px;flex-wrap:wrap}
.pc-gchk{display:inline-flex;align-items:center;gap:7px;padding:9px 14px;border-radius:11px;cursor:pointer;
  font-size:.85rem;background:rgba(10,14,44,.5);border:1.5px solid var(--a-line);transition:.15s}
.pc-gchk:hover{border-color:rgba(167,139,250,.55)}
.pc-gchk.on{background:rgba(139,92,246,.18);border-color:rgba(167,139,250,.75);color:#ddd6fe}

.pc-chsec{margin-top:16px;padding-top:14px;border-top:1px dashed rgba(255,255,255,.12)}
.pc-chhead{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:10px}
.pc-chrows{display:flex;flex-direction:column;gap:7px}
.pc-chrow{display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.pc-chrow .adm-inp{flex:1;min-width:180px;padding:9px 13px;font-size:.86rem}
.pc-chrow .pc-sw{padding:7px 11px;font-size:.8rem}
.pc-cnum{flex:0 0 26px;text-align:center;font-size:.78rem;color:#9aa0c8;
  background:rgba(255,255,255,.06);border-radius:7px;padding:5px 0}
.pc-cq{flex:0 0 auto;font-size:.76rem;color:#a5b4fc;background:rgba(99,102,241,.12);
  border:1px solid rgba(99,102,241,.26);border-radius:999px;padding:3px 9px;white-space:nowrap}
.pc-empty{padding:14px;text-align:center;font-size:.85rem;color:#9aa0c8;
  border:1px dashed rgba(255,255,255,.14);border-radius:11px}
.pc-danger{margin-top:14px;padding-top:12px;border-top:1px solid rgba(239,68,68,.18)}
.pc-danger .btn{color:#fca5a5;border-color:rgba(239,68,68,.34)}
.pc-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap;position:sticky;bottom:12px;z-index:5}
.pc-ok{color:#86efac}.pc-bad{color:#fca5a5}

/* সাইডবার মেনুতে এক লাইনের ব্যাখ্যা */
.atab span{display:block;line-height:1.35}
.atab-h{display:block;font-style:normal;font-size:.7rem;color:#8b90bb;font-weight:400;margin-top:1px}
.atab.on .atab-h{color:#ddd6fe}

/* ============ অধ্যায়ের ভিতরের প্রশ্ন দেখা ============ */
.m-wide{max-width:860px;width:94vw}
.qv-top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.qv-tools{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:14px 0 6px}
.qv-list{max-height:62vh;overflow-y:auto;padding-right:6px;margin-top:6px}
.qv-item{padding:14px 16px;margin-bottom:10px;border-radius:14px;
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.10)}
.qv-q{display:flex;gap:10px;align-items:flex-start;font-weight:700;line-height:1.7}
.qv-n{flex:0 0 26px;height:26px;display:grid;place-items:center;border-radius:8px;font-size:.78rem;
  background:rgba(139,92,246,.30);color:#e9d5ff}
.qv-opts{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:7px;margin:11px 0 0 36px}
.qv-o{display:flex;align-items:center;gap:8px;padding:8px 11px;border-radius:10px;font-size:.87rem;
  background:rgba(10,14,44,.42);border:1px solid rgba(255,255,255,.08)}
.qv-o.right{background:rgba(34,197,94,.13);border-color:rgba(34,197,94,.40)}
.qv-k{flex:0 0 20px;height:20px;display:grid;place-items:center;border-radius:6px;font-size:.74rem;
  background:rgba(255,255,255,.10)}
.qv-o.right .qv-k{background:rgba(34,197,94,.34);color:#dcfce7}
.qv-tick{margin-left:auto;font-size:.72rem;color:#86efac;white-space:nowrap}
.qv-x{margin:11px 0 0 36px;padding:10px 13px;border-radius:11px;font-size:.86rem;line-height:1.75;
  background:rgba(79,70,229,.10);border:1px solid rgba(79,70,229,.24)}
.qv-t{margin:8px 0 0 36px;padding:10px 13px;border-radius:11px;font-size:.86rem;line-height:1.75;
  background:rgba(245,158,11,.10);border:1px solid rgba(245,158,11,.28)}
.qv-foot{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;
  margin:10px 0 0 36px;font-size:.76rem;color:#9aa0c8}
.qv-src{padding:2px 9px;border-radius:999px;border:1px solid rgba(255,255,255,.14)}
.qv-src.custom{background:rgba(245,158,11,.14);border-color:rgba(245,158,11,.32);color:#fde68a}
.qv-note{margin-top:12px;padding-top:10px;border-top:1px solid rgba(255,255,255,.10)}
.pc-cview{white-space:nowrap}

/* ============ অধ্যায়ের পাঠ — শিক্ষার্থীর দিক ============ */
.ls-card{border-radius:18px;padding:0;margin-bottom:16px;overflow:hidden;
  background:linear-gradient(150deg,#fffaf0,#fff7ed);border:1px solid #f3d9a4}
.ls-head{display:flex;align-items:center;gap:12px;padding:16px 18px;cursor:pointer}
.ls-head:hover{background:rgba(245,158,11,.07)}
.ls-em{font-size:1.5rem}
.ls-arrow{font-size:.82rem;color:#b45309;white-space:nowrap;font-weight:700}
.ls-body{padding:0 20px 20px}
.ls-body h4{font-size:1.02rem;margin:18px 0 8px;color:#92400e;font-weight:800}
.ls-body h4:first-child{margin-top:4px}
.ls-body p{margin:8px 0;line-height:1.85}
.ls-body ul{margin:8px 0 8px 4px;padding-left:20px}
.ls-body li{margin:5px 0;line-height:1.8}
.ls-tbl{width:100%;border-collapse:collapse;margin:10px 0;font-size:.9rem}
.ls-tbl th,.ls-tbl td{border:1px solid #edd6a8;padding:8px 11px;text-align:left}
.ls-tbl th{background:rgba(245,158,11,.14);font-weight:700}
.ls-card.mini .ls-head{padding:13px 18px}

/* ডার্ক মোড */
.dark .ls-card,body.dark .ls-card{background:linear-gradient(150deg,rgba(245,158,11,.09),rgba(30,20,10,.28));border-color:rgba(245,158,11,.26)}
.dark .ls-body h4,body.dark .ls-body h4{color:#fcd34d}
.dark .ls-arrow,body.dark .ls-arrow{color:#fcd34d}
.dark .ls-tbl th,body.dark .ls-tbl th{background:rgba(245,158,11,.16)}
.dark .ls-tbl th,.dark .ls-tbl td,body.dark .ls-tbl th,body.dark .ls-tbl td{border-color:rgba(245,158,11,.24)}

/* ============ অ্যাডমিন: পাঠ সম্পাদক ============ */
.ls-help{margin:14px 0 10px;padding:12px 14px;border-radius:12px;font-size:.82rem;line-height:1.9;
  background:rgba(139,92,246,.09);border:1px solid rgba(139,92,246,.22)}
.ls-help code{padding:1px 7px;border-radius:6px;background:rgba(255,255,255,.10);font-size:.8rem}
.ls-edit{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:10px}
.ls-col{display:flex;flex-direction:column;gap:5px;min-width:0}
.ls-col textarea{font-family:var(--font);line-height:1.8;resize:vertical}
.ls-prev{max-height:420px;overflow-y:auto;padding:14px 16px;border-radius:13px;
  background:rgba(10,14,44,.42);border:1px solid var(--a-line);font-size:.88rem}
.ls-prev h4{font-size:.98rem;margin:14px 0 6px;color:#fcd34d;font-weight:800}
.ls-prev h4:first-child{margin-top:0}
.ls-prev p{margin:7px 0;line-height:1.8}
.ls-prev ul{margin:7px 0;padding-left:20px}
.ls-prev li{margin:4px 0;line-height:1.75}
.ls-prev .ls-tbl th{background:rgba(245,158,11,.16)}
.ls-prev .ls-tbl th,.ls-prev .ls-tbl td{border-color:rgba(255,255,255,.14)}
.pc-cles{white-space:nowrap}
.pc-cles.has{color:#fcd34d;border-color:rgba(245,158,11,.40)}
@media(max-width:820px){.ls-edit{grid-template-columns:1fr}}

/* ============ অ্যাডমিন: কন্ট্রোল প্যানেল ম্যাপ ============ */
.ctl-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(215px,1fr));gap:11px}
.ctl{display:flex;flex-direction:column;align-items:flex-start;gap:3px;text-align:left;cursor:pointer;
  padding:15px 16px;border-radius:14px;font-family:inherit;color:#fff;transition:.16s;
  background:linear-gradient(158deg,rgba(74,96,196,.17),rgba(24,26,72,.24));
  border:1px solid var(--a-line)}
.ctl:hover{transform:translateY(-2px);border-color:rgba(167,139,250,.60);
  background:linear-gradient(158deg,rgba(139,92,246,.22),rgba(24,26,72,.30))}
.ctl-em{font-size:1.5rem;line-height:1.2}
.ctl b{font-size:.98rem}
.ctl i{font-style:normal;font-size:.76rem;color:#9aa0c8;line-height:1.5}

/* ============ AI সহায়ক মডাল ============ */
.ai-box{padding:15px 17px;border-radius:14px;line-height:1.9;font-size:.9rem;
  background:rgba(79,70,229,.10);border:1px solid rgba(79,70,229,.24)}
.ai-box b{color:#c4b5fd}
.ai-more{padding-top:12px;border-top:1px solid rgba(255,255,255,.10)}

/* ============ NCTB অধ্যায় পাঠক ============ */
.nctb-ch li.readable{cursor:pointer;transition:.15s}
.nctb-ch li.readable:hover{background:rgba(79,70,229,.08);border-radius:9px}
.nctb-read{margin-left:auto;font-size:.74rem;padding:2px 9px;border-radius:999px;white-space:nowrap;
  background:rgba(34,197,94,.14);border:1px solid rgba(34,197,94,.34);color:#0f7a4d}
.rd-body{max-height:64vh;overflow-y:auto;padding:16px 20px;margin-top:14px;border-radius:14px;
  background:#fffdf7;border:1px solid #f0e2c4;font-size:1.02rem;line-height:2}
.rd-body h4{font-size:1.06rem;margin:20px 0 9px;color:#92400e;font-weight:800}
.rd-body h4:first-child{margin-top:0}
.rd-body p{margin:11px 0;text-align:justify}
.rd-body ul{margin:10px 0;padding-left:22px}
.rd-body li{margin:6px 0}
.rd-nav{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:14px;
  padding-top:12px;border-top:1px solid rgba(255,255,255,.12)}
.dark .rd-body,body.dark .rd-body{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.12)}
.dark .rd-body h4,body.dark .rd-body h4{color:#fcd34d}
.dark .nctb-read,body.dark .nctb-read{color:#bbf7d0}

/* ================= ডেভেলপার প্যানেল ================= */
.dev-tabs{display:flex;gap:8px;flex-wrap:wrap}
.dev-t{padding:9px 15px;border-radius:11px;cursor:pointer;font-family:inherit;font-size:.86rem;color:#c5cae8;
  background:rgba(10,14,44,.5);border:1.5px solid var(--a-line);transition:.15s}
.dev-t:hover{border-color:rgba(167,139,250,.55)}
.dev-t.on{background:rgba(139,92,246,.20);border-color:rgba(167,139,250,.78);color:#fff;font-weight:700}
.dev-mono{font-family:ui-monospace,'SF Mono',Menlo,Consolas,monospace;font-size:.84rem}

.dev-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:9px}
.dev-kv{display:flex;justify-content:space-between;gap:10px;align-items:baseline;padding:11px 14px;
  border-radius:11px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.09)}
.dev-kv span{font-size:.8rem;color:#9aa0c8}
.dev-kv b{font-size:.92rem;text-align:right;word-break:break-all}

.dev-tbl{width:100%;border-collapse:collapse;font-size:.86rem}
.dev-tbl th{text-align:left;padding:9px 11px;font-size:.78rem;color:#9aa0c8;
  border-bottom:1px solid rgba(255,255,255,.14)}
.dev-tbl td{padding:9px 11px;border-bottom:1px solid rgba(255,255,255,.07)}
.dev-row{cursor:pointer;transition:.13s}
.dev-row:hover{background:rgba(139,92,246,.10)}
.dev-row.on{background:rgba(139,92,246,.18)}

.dev-score{display:flex;gap:9px;flex-wrap:wrap}
.dev-chk{display:flex;gap:11px;align-items:flex-start;padding:12px 14px;margin-bottom:8px;border-radius:12px}
.dev-chk.ok{background:rgba(34,197,94,.08);border:1px solid rgba(34,197,94,.20)}
.dev-chk.bad{background:rgba(245,158,11,.10);border:1px solid rgba(245,158,11,.30)}
.dev-chk-i{font-size:1.1rem;line-height:1.4}
.dev-chk b{font-size:.92rem}
.dev-chk .xs{margin-top:2px;line-height:1.6;word-break:break-word}

.dev-api{display:flex;gap:9px;flex-wrap:wrap;align-items:center}
.dev-api #dvP{flex:1;min-width:180px}
.dev-out{border-radius:13px;padding:13px 15px;background:rgba(10,14,44,.5);border:1px solid var(--a-line)}
.dev-pre{margin:8px 0 0;max-height:400px;overflow:auto;white-space:pre-wrap;word-break:break-word;
  font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.8rem;line-height:1.65;color:#d5d9f2}
.dev-routes{max-height:340px;overflow-y:auto;display:flex;flex-direction:column;gap:5px}
.dev-route{display:flex;gap:10px;align-items:center;text-align:left;cursor:pointer;padding:7px 11px;
  border-radius:9px;font-family:inherit;color:#c5cae8;background:transparent;border:1px solid transparent}
.dev-route:hover{background:rgba(139,92,246,.12);border-color:rgba(139,92,246,.26)}
.dev-m{flex:0 0 46px;text-align:center;font-size:.68rem;font-weight:800;padding:2px 0;border-radius:6px}
.dev-m.GET{background:rgba(34,197,94,.20);color:#86efac}
.dev-m.POST{background:rgba(245,158,11,.20);color:#fcd34d}

.dev-logs{display:flex;flex-direction:column;gap:6px;max-height:460px;overflow-y:auto}
.dev-log{display:flex;gap:10px;align-items:flex-start;padding:9px 12px;border-radius:10px;
  background:rgba(239,68,68,.07);border:1px solid rgba(239,68,68,.18)}
.dev-log-k{flex:0 0 auto;font-size:.68rem;padding:2px 8px;border-radius:999px;
  background:rgba(239,68,68,.20);color:#fca5a5}

.dev-tools{display:grid;grid-template-columns:repeat(auto-fit,minmax(235px,1fr));gap:11px}
.dev-tool{display:flex;flex-direction:column;align-items:flex-start;padding:15px 16px;border-radius:14px;
  background:linear-gradient(158deg,rgba(74,96,196,.15),rgba(24,26,72,.22));border:1px solid var(--a-line)}
.dev-tool b{font-size:.94rem;margin-bottom:4px}
.dev-tool .xs{line-height:1.6}

/* ============ গ্লোবাল ডার্ক মোড (শিক্ষার্থী সাইট) ============ */
body.dark{
  --bg:#0b1020; --card:#151a2e; --ink:#e7e9f5; --mut:#9aa2c0; --line:#2a3150;
  --brand-l:rgba(99,102,241,.20); --ok-l:rgba(22,163,74,.16); --bad-l:rgba(220,38,38,.16); --warn-l:rgba(245,158,11,.16);
  --sh:0 4px 24px rgba(0,0,0,.4); --sh2:0 10px 40px rgba(0,0,0,.55);
  color:var(--ink);
  background:
    radial-gradient(1100px 720px at 85% -12%, rgba(124,58,237,.22), transparent 55%),
    radial-gradient(900px 620px at -8% 10%, rgba(6,182,212,.14), transparent 52%),
    radial-gradient(1000px 760px at 55% 118%, rgba(79,70,229,.20), transparent 55%),
    linear-gradient(180deg,#0a0e1c 0%,#0d1224 55%,#120e26 100%);
  background-attachment:fixed;
}
body.dark::before{background:#4c3b9a;opacity:.30}
body.dark::after{background:#0e4a5a;opacity:.30}
body.dark ::selection{background:#3730a3;color:#fff}

/* frosted surfaces -> ডার্ক গ্লাস */
body.dark .card,body.dark .fcell,body.dark .why-c,body.dark .step-c,body.dark details.faq,body.dark .auth-card,body.dark .plan-c,body.dark .q-card,body.dark .qa-c,body.dark .subj-c,body.dark .ch-row,body.dark .lb-row,body.dark .pod-c,body.dark .book-c,body.dark .reader-page,body.dark .exam-card,body.dark .m-box,body.dark .notif-panel,body.dark .accordion-item,body.dark .chat-box,body.dark .tb-chip{
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.10);
  box-shadow:0 8px 32px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.05);
}
body.dark .m-box{background:#151a2e}
body.dark .tbl{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.1)}

/* ইনপুট */
body.dark .inp,body.dark .phone-wrap,body.dark .otp-boxes input,body.dark input,body.dark select,body.dark textarea{
  background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.14);color:var(--ink)}
body.dark .inp::placeholder,body.dark textarea::placeholder,body.dark input::placeholder{color:#8891b5}
body.dark .phone-wrap .cc{background:rgba(255,255,255,.05);border-right-color:rgba(255,255,255,.14)}

/* চিপ / বাটন / আইকন */
body.dark .chip,body.dark .btn-g{background:rgba(255,255,255,.08);color:var(--ink)}
body.dark .btn-g:hover{background:rgba(255,255,255,.14)}
body.dark .btn-o{background:rgba(255,255,255,.04);color:#c7d2fe;border-color:rgba(129,140,248,.5)}
body.dark .btn-o:hover{background:rgba(255,255,255,.1)}
body.dark .tb-icon{background:rgba(255,255,255,.07);color:var(--ink);border-color:rgba(255,255,255,.12)}
body.dark .chip-a{background:rgba(99,102,241,.2);color:#c7d2fe}

/* অপশন / ব্যাখ্যা */
body.dark .opt{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.12);color:var(--ink)}
body.dark .opt:hover{background:rgba(255,255,255,.09);border-color:#818cf8}
body.dark .opt .k{background:rgba(255,255,255,.12);color:#c7d2fe}
body.dark .opt.ok{background:rgba(22,163,74,.18);border-color:rgba(22,163,74,.55)}
body.dark .opt.bad{background:rgba(220,38,38,.16);border-color:rgba(220,38,38,.5)}
body.dark .explain{background:rgba(99,102,241,.16);border-color:rgba(99,102,241,.32)}
body.dark .pal{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.12)}

/* নেভ / চ্যাট */
body.dark .bnav{background:rgba(11,16,32,.88);border-top-color:rgba(255,255,255,.1)}
body.dark .lnav,body.dark .runner-top{background:rgba(11,16,32,.82);border-bottom-color:rgba(255,255,255,.1)}
body.dark .msg.ai,body.dark .typing{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.1)}
body.dark .qchip{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.12)}
body.dark .chat-inp,body.dark .qchips{background:rgba(255,255,255,.04)}
body.dark .demo-note{background:rgba(245,158,11,.14);border-color:rgba(245,158,11,.3)}
body.dark .notif-item:hover{background:rgba(255,255,255,.06)}

/* ---------- সৃজনশীল প্রশ্ন (CQ) ---------- */
.cq-testbar{background:var(--warn-l);border:1px solid rgba(245,158,11,.35);color:#92400e;border-radius:12px;padding:12px 16px;margin-bottom:14px;font-size:.92rem;line-height:1.7}
.cq-stem{background:var(--brand-l);border:1px dashed rgba(79,70,229,.35);border-radius:12px;padding:14px 16px;margin:6px 0 14px;line-height:1.85}
.cq-stem-lbl{display:inline-block;background:var(--grad);color:#fff;font-size:.72rem;font-weight:800;padding:2px 10px;border-radius:999px;margin-right:8px;vertical-align:middle}
.cq-parts{display:flex;flex-direction:column;gap:12px}
.cq-part{border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.cq-phead{display:flex;align-items:flex-start;gap:10px}
.cq-plbl{flex:0 0 30px;width:30px;height:30px;border-radius:9px;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:800;font-size:1rem}
.cq-pq{flex:1;font-weight:600;line-height:1.6}
.cq-pm{flex:0 0 auto;background:#eef0f8;color:#3f4559;border-radius:8px;padding:2px 10px;font-weight:800;font-size:.85rem;height:fit-content}
.cq-pmeta{margin:6px 0 0 40px}
.cq-part .btn{margin-left:40px}
.cq-part .explain{margin-left:40px}
.cq-assess{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:14px;padding-top:12px;border-top:1px dashed var(--line)}
.ok-txt{color:var(--ok);font-weight:700}
/* CQ ডার্ক মোড */
body.dark .cq-part{border-color:rgba(255,255,255,.12)}
body.dark .cq-pm{background:rgba(255,255,255,.1);color:var(--ink)}
body.dark .cq-stem{background:rgba(99,102,241,.14);border-color:rgba(99,102,241,.4)}
body.dark .cq-testbar{background:rgba(245,158,11,.14);border-color:rgba(245,158,11,.3);color:#fcd34d}
@media(max-width:560px){.cq-part .btn,.cq-part .explain,.cq-pmeta{margin-left:0}}

/* ---------- AI লাইভ স্ট্যাটাস ব্যাজ ---------- */
.ai-status{padding:0 2px 8px}
.ai-badge{display:inline-flex;align-items:center;gap:6px;font-size:.78rem;font-weight:700;padding:4px 12px;border-radius:999px}
.ai-badge.live{background:var(--ok-l);color:var(--ok)}
.ai-badge.off{background:#eef0f8;color:#6a7085}
body.dark .ai-badge.off{background:rgba(255,255,255,.08);color:var(--mut)}

/* ---------------- ব্যক্তিগত নোট ---------------- */
.note-area{ width:100%; box-sizing:border-box; resize:vertical; font-family:inherit; font-size:15px; padding:12px 14px; border:1.5px solid #e5e7eb; border-radius:12px; background:#fff; color:#111827; line-height:1.6; }
.note-area:focus{ outline:none; border-color:#7c3aed; box-shadow:0 0 0 3px rgba(124,58,237,.15); }
.note-box{ background:#fffbeb; border:1px solid #fde68a; border-left:4px solid #f59e0b; border-radius:10px; padding:10px 12px; margin-top:10px; font-size:14px; color:#713f12; line-height:1.65; white-space:pre-wrap; word-break:break-word; }
body.dark .note-area{ background:#1e293b; color:#e2e8f0; border-color:#334155; }
body.dark .note-area:focus{ border-color:#a78bfa; box-shadow:0 0 0 3px rgba(167,139,250,.2); }
body.dark .note-box{ background:#3b2c07; border-color:#78530f; border-left-color:#f59e0b; color:#fde68a; }

/* ---------------- বিজ্ঞাপন কার্ড ---------------- */
.ad-card{display:flex;align-items:center;gap:14px;padding:12px 14px;border:1px solid var(--line);border-radius:16px;background:linear-gradient(135deg,#fafafe,#f4f4ff);text-decoration:none;color:inherit;position:relative;overflow:hidden}
.ad-card:hover{border-color:#c7d2fe;box-shadow:0 4px 18px rgba(79,70,229,.08)}
.ad-card .ad-img{width:72px;height:72px;object-fit:cover;border-radius:12px;flex:0 0 auto}
.ad-card .ad-body{flex:1;min-width:0}
.ad-card .ad-body b{display:block;font-size:1rem}
.ad-tag{display:inline-block;font-size:.62rem;font-weight:800;letter-spacing:.5px;text-transform:uppercase;color:#9ca3af;border:1px solid #e5e7eb;border-radius:6px;padding:1px 6px;margin-bottom:4px}
.ad-x{position:absolute;top:8px;right:10px;font-size:.7rem;color:#6366f1;text-decoration:none;background:rgba(99,102,241,.08);padding:2px 8px;border-radius:20px}
.ad-x:hover{background:rgba(99,102,241,.16)}
body.dark .ad-card{background:linear-gradient(135deg,rgba(255,255,255,.03),rgba(129,140,248,.05));border-color:rgba(255,255,255,.08)}
body.dark .ad-tag{color:#6b7280;border-color:rgba(255,255,255,.12)}

/* ==================== 👨‍🏫 টিউটর সেকশন ==================== */
.tu-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.tu-card{background:#fff;border:1px solid #e6e8ef;border-radius:16px;padding:15px;display:flex;flex-direction:column;box-shadow:0 2px 10px rgba(20,20,60,.04)}
.tu-card-head{display:flex;gap:11px;align-items:center}
.tu-ava{width:42px;height:42px;border-radius:50%;flex:none;display:grid;place-items:center;font-weight:700;color:#fff;background:linear-gradient(135deg,#6366f1,#a855f7)}
.tu-meta{display:flex;flex-wrap:wrap;gap:6px}
.tu-chip{font-size:.72rem;background:#ede9fe;color:#4338ca;border-radius:999px;padding:3px 10px;border:1px solid #e0e7ff}
.tu-chip.sub{background:#f0fdf4;color:#15803d;border-color:#dcfce7}
.tu-fee{color:#7c3aed;font-size:1rem}
.tu-filters{padding:14px}
.tu-info{width:100%;border-collapse:collapse;font-size:.9rem}
.tu-info td{padding:6px 4px;border-bottom:1px solid #f1f5f9;vertical-align:top}
.tu-info td:first-child{color:#64748b;white-space:nowrap;width:42%}
.tu-req{padding:13px}
.tu-modesw{display:inline-flex;gap:4px;background:#eef0f8;padding:4px;border-radius:12px}
.tu-modesw button{padding:8px 16px;border-radius:9px;font-weight:700;font-size:.86rem;color:#4a5068;white-space:nowrap}
.tu-modesw button.on{background:#fff;color:var(--brand);box-shadow:var(--sh)}
body.dark .tu-modesw{background:rgba(255,255,255,.08)}
body.dark .tu-modesw button.on{background:rgba(255,255,255,.92)}
.bad-t{color:#dc2626}
body.dark .tu-card,body.dark .tu-req{background:#161a2e;border-color:#2a3050}
body.dark .tu-info td{border-color:#252b45}
body.dark .tu-chip{background:#1e2340;color:#c7d2fe;border-color:#2a3050}
body.dark .tu-chip.sub{background:#14251b;color:#86efac;border-color:#1e3a29}