/* learning features: sub-navigation, tests, flashcards, planner, tables, badges */
header.top{flex-wrap:wrap}
.subnav{flex:1 0 100%;order:3;display:flex;gap:8px;overflow-x:auto;padding:8px 0 2px;margin-top:6px;border-top:1px solid var(--line);-webkit-overflow-scrolling:touch}
.subnav button{flex:none;white-space:nowrap;padding:6px 12px;font-size:.88rem;border-radius:999px}
.subnav button.active{background:var(--brand);color:var(--on-brand);border-color:var(--brand);font-weight:600}
.subnav button#srchBtn{margin-left:auto}

.card label{display:block;font-size:.85rem;color:var(--muted);margin:10px 0 4px}
.card select,.card input[type="number"],.card input[type="date"]{width:100%;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:var(--bg);color:var(--text);font:inherit}
.card label.inl{display:flex;align-items:center;gap:8px;color:var(--text);font-size:.95rem;margin:6px 0}
.card input[type="checkbox"]{width:auto}
fieldset.chk{border:1px solid var(--line);border-radius:12px;margin:12px 0 0;padding:6px 12px 10px}
fieldset.chk legend{font-size:.85rem;color:var(--muted);padding:0 6px}

.mock .meta{display:flex;justify-content:space-between;gap:10px;align-items:center}
.clock{font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums}
.clock.low{color:var(--bad)}
.chip{display:inline-block;padding:2px 8px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:.78rem}
.pal{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0}
.pb{min-width:36px;padding:5px 0;text-align:center;border-radius:8px;font-size:.85rem;font-variant-numeric:tabular-nums}
.pb.done{background:var(--brand-soft);border-color:var(--brand)}
.pb.flag{border-color:var(--gold);box-shadow:inset 0 -3px 0 var(--gold)}
.pb.cur{background:var(--brand);color:var(--on-brand);border-color:var(--brand)}
.opt.picked{border-color:var(--brand);background:var(--brand-soft)}
.wrong-item.okrev{border-left-color:var(--ok)}

.tbl-wrap{overflow-x:auto;margin:8px 0}
table.sbtbl{width:100%;border-collapse:collapse;font-size:.9rem}
table.sbtbl th,table.sbtbl td{padding:8px 10px;border-bottom:1px solid var(--line);text-align:left}
table.sbtbl th{background:var(--brand-soft);font-weight:600;white-space:nowrap}
table.sbtbl tr.tot td{font-weight:800;background:var(--brand-soft)}

.badges{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;margin-top:8px}
.badge{padding:10px 12px;border:1px dashed var(--line);border-radius:12px;opacity:.55}
.badge b{display:block;font-size:.92rem}
.badge small{color:var(--muted);font-size:.76rem}
.badge.on{opacity:1;border:2px solid var(--gold);background:var(--brand-soft)}

ul.hist,ul.plan,ul.srch{list-style:none;margin:6px 0;padding:0}
ul.hist li,ul.plan li,ul.srch li{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px;padding:8px 0;border-bottom:1px solid var(--line)}
ul.hist li span{font-weight:700}
ul.plan li span{flex:1 1 220px}
ul.srch button{text-align:left;text-decoration:none;color:var(--text)}
ul.srch small{display:block;color:var(--muted)}
#srchQ{width:100%;padding:11px 12px;border-radius:10px;border:1px solid var(--line);background:var(--bg);color:var(--text);font:inherit;margin:8px 0}
dialog.wide ul.srch{max-height:52vh;overflow:auto}

.fcard .face{min-height:200px;padding:22px 16px;text-align:center;border:2px solid var(--line);border-radius:18px;background:var(--bg);margin:12px 0;display:flex;flex-direction:column;justify-content:center}
.fcard .face h2{margin:6px 0}
.fcard .face p{margin:6px 0 0;line-height:1.5}
.fcard .face small{color:var(--muted);text-transform:uppercase;letter-spacing:.06em;font-size:.7rem}
.fcard .face hr{border:0;border-top:1px dashed var(--line);margin:14px 0}

/* AI teacher in the chat */
.sbq-mode{display:flex;align-items:center;gap:6px;padding:6px 12px;font-size:.8rem;color:var(--muted);border-top:1px solid var(--line);cursor:pointer}
.sbq-mode input{width:auto;margin:0}
.sbq-think{opacity:.75;font-style:italic}
.sbq-aitext{margin:0 0 8px;line-height:1.5}
/* teacher dashboard */
.subnav button.adm-btn{border-color:var(--gold);font-weight:700}
.adm-filters{display:flex;flex-wrap:wrap;gap:12px}
.adm-filters>div{flex:1 1 220px}
details{margin:8px 0;border:1px solid var(--line);border-radius:12px;padding:8px 12px}
details summary{cursor:pointer}
tr.ans-row td{background:var(--bg)}
.ans{padding:8px 10px;margin:6px 0;border-left:4px solid var(--line);border-radius:6px;font-size:.88rem}
.ans.ok{border-left-color:var(--ok)}
.ans.bad{border-left-color:var(--bad)}
.ans small{color:var(--muted)}
/* tool pages (mock tests, practice, flashcards, planner, dashboards) open at the top, without the banner and chapter list */
body.tool-view .hero{display:none}
body.tool-view .side{display:none}
body.tool-view .layout{grid-template-columns:1fr;max-width:860px;margin-top:14px}
/* compound GST entry grid */
.bkg-tbl td{vertical-align:middle}
.bkg-tbl input{width:100%;min-width:84px;padding:6px 8px}
.bkg-tbl tr.ok td{background:var(--ok-bg)}
.bkg-tbl tr.bad td{background:var(--bad-bg)}
.sbtbl td.n{text-align:right;font-variant-numeric:tabular-nums}
.bkgx.cx{border-color:var(--gold);font-weight:600}
/* admin: tabs, teacher mappings, subject picker */
.adm-tabs{display:inline-flex;gap:4px;padding:4px;margin:4px 0 12px;border-radius:12px;background:var(--bg)}
.adm-tabs button{border:0;background:transparent;font-weight:600;color:var(--muted);padding:7px 16px}
.adm-tabs button.on{background:var(--card);color:var(--text);box-shadow:var(--shadow-sm,0 1px 3px rgba(0,0,0,.1))}
.adm-chip{display:inline-block;margin:2px 4px 2px 0;padding:2px 10px;border-radius:999px;font-size:.82rem;background:var(--brand-soft);border:1px solid color-mix(in srgb,var(--brand) 30%,var(--line))}
.adm-chip small{color:var(--muted)}
.adm-subj{display:flex;flex-wrap:wrap;gap:8px 14px;margin:12px 0 4px;padding:12px 14px;border:1px solid var(--line);border-radius:12px}
.adm-subj legend{padding:0 6px;font-weight:600;font-size:.9rem}
.adm-subj label{display:inline-flex;align-items:center;gap:6px;margin:0;font-weight:500}
.adm-subj input{width:auto;margin:0}
.adm-map{display:flex;flex-wrap:wrap;gap:12px;margin-top:10px}
.adm-map>div{flex:1 1 220px}
.adm-map input{margin-top:6px}
/* forgot PIN and "My account" */
.fp-link{display:block;margin-top:4px}
.fp-link[hidden]{display:none}
#fpDlg{width:min(440px,calc(100% - 24px))}
.acct-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px 28px}
.acct-grid h4{margin:6px 0 2px;font-size:1rem}
@media (max-width:640px){.acct-grid{grid-template-columns:1fr}}
/* password fields: Show / Hide */
.pw-wrap{position:relative;display:block}
.pw-wrap>input{padding-right:68px}
.pw-tog{position:absolute;right:6px;top:50%;transform:translateY(-50%);margin:0;padding:4px 10px;font-size:.78rem;font-weight:700;border:0;background:transparent;color:var(--brand);box-shadow:none}
.pw-tog:hover:not(:disabled){background:var(--brand-soft);box-shadow:none}
.pw-tog:active:not(:disabled){transform:translateY(-50%) scale(.97)}
/* account notices, plan status and standard request */
.ac-notice{max-width:1100px;margin:10px auto 0;padding:0 16px;display:grid;gap:8px}
.ac-notice[hidden]{display:none}
.ac-note{display:flex;gap:12px;align-items:center;justify-content:space-between;padding:10px 14px;border-radius:14px;border:1px solid var(--line);background:var(--card);box-shadow:var(--shadow-sm,0 1px 3px rgba(0,0,0,.08));font-size:.92rem}
.ac-note button{flex:none;padding:5px 14px;font-size:.84rem;font-weight:700}
.ac-info{border-color:color-mix(in srgb,var(--brand) 45%,var(--line));background:var(--brand-soft)}
.ac-warn{border-color:color-mix(in srgb,var(--gold) 60%,var(--line));background:color-mix(in srgb,var(--gold) 14%,var(--card))}
.ac-bad{border-color:color-mix(in srgb,var(--bad) 45%,var(--line));background:var(--bad-bg)}
.ac-state{margin:10px 0;padding:10px 12px;border-radius:12px;border:1px solid var(--line)}
.ac-wait{background:color-mix(in srgb,var(--gold) 14%,var(--card));border-color:color-mix(in srgb,var(--gold) 50%,var(--line))}
.ac-no{background:var(--bad-bg);border-color:color-mix(in srgb,var(--bad) 40%,var(--line))}
.ac-std h4{margin:14px 0 4px;font-size:1rem}
/* admin: requests and plans */
.rq-card{padding:14px 16px;margin:0 0 12px;border:1px solid var(--line);border-radius:16px;background:var(--card)}
.rq-card h4{margin:0 0 4px;font-size:1.05rem}
.rq-meta{margin:2px 0;color:var(--muted);font-size:.9rem}
.rq-done{margin:8px 0 12px;padding:12px 14px;border-radius:14px;background:var(--ok-bg);border:1px solid color-mix(in srgb,var(--ok) 40%,var(--line))}
.rq-done pre{white-space:pre-wrap;font:inherit;margin:8px 0;padding:8px 10px;border-radius:10px;background:var(--card);border:1px solid var(--line)}
.pl-active{color:var(--ok);font-weight:700}.pl-grace{color:#b77900;font-weight:700}.pl-expired{color:var(--bad);font-weight:700}
/* text boxes inside dashboard and account cards match the sign-in boxes */
.card input[type=text],.card input[type=email],.card input[type=tel],.card input[type=password],.rq-card input[type=text]{display:block;width:100%;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:var(--bg);color:var(--text);font:inherit}
.card input[type=text]:focus,.card input[type=email]:focus,.card input[type=tel]:focus,.card input[type=password]:focus,.rq-card input[type=text]:focus{outline:none;border-color:var(--brand);box-shadow:var(--glow,0 0 0 3px rgba(11,122,114,.2))}
.card label{display:block;font-size:.85rem;color:var(--muted);margin:10px 0 4px}
.card .adm-subj label,.card .row label{display:inline-flex}
.rq-card label:not([style]){display:block;font-size:.85rem;color:var(--muted);margin:10px 0 4px}
.card input[type=password]{padding-right:68px}

#cExplain .c-explain{margin:6px 0 10px;padding-left:20px}
#cExplain .c-explain li{margin:5px 0;line-height:1.55}
#cExplainLead{margin:4px 0 6px;line-height:1.6}
#cBook .c-page{margin:10px 0 0}