/* Placement practice styles: copied from the CATwithKiran site, recoloured to Target Campus blue. */
/* Layout: a calm reading column for question papers; wide shell for hubs. Ink navy + marigold (Target Campus orange). */
:root {
  --bg: #f6f7fa;
  --surface: #ffffff;
  --ink: #141b2d;
  --muted: #5b6475;
  --line: #dfe3ea;
  --accent: #2f6db5;
  --accent-soft: #e6effa;
  --navy: #1d2b52;
  --right: #17803d;
  --right-soft: #e2f4e8;
  --wrong: #c0362c;
  --wrong-soft: #fbe5e3;
  --chip: #eef1f6;
  --display: 'Bricolage Grotesque', 'Segoe UI', system-ui, sans-serif;
  --body: 'Source Sans 3', 'Segoe UI', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'Cascadia Mono', Consolas, monospace;
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e1320; --surface: #161d2e; --ink: #e8ebf2; --muted: #9aa3b5; --line: #2a3349;
    --accent: #7eaeea; --accent-soft: #1a2d4a; --navy: #c9d6f2; --right: #4cc27a; --right-soft: #12301f;
    --wrong: #f07a70; --wrong-soft: #3a1a18; --chip: #1f2840; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0e1320; --surface: #161d2e; --ink: #e8ebf2; --muted: #9aa3b5; --line: #2a3349;
  --accent: #7eaeea; --accent-soft: #1a2d4a; --navy: #c9d6f2; --right: #4cc27a; --right-soft: #12301f;
  --wrong: #f07a70; --wrong-soft: #3a1a18; --chip: #1f2840; color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--body); font-size: 17px; line-height: 1.6; }
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 10; background: var(--surface); }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.wrap { max-width: 1120px; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
.read { max-width: 820px; }

/* Header */
.top { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 9; background: var(--surface); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; gap: 18px; min-height: 60px; flex-wrap: wrap; padding-block: 8px; }
.brand { font-family: var(--display); font-weight: 800; font-size: 21px; color: var(--ink); text-decoration: none; letter-spacing: -0.4px; }
.brand b { color: var(--accent); font-weight: 800; }
.nav { display: flex; gap: 4px; flex-wrap: wrap; margin-left: auto; }
.nav a { color: var(--ink); text-decoration: none; font-size: 15px; font-weight: 600; padding: 6px 10px; border-radius: 8px; }
.nav a:hover, .nav a[aria-current="page"] { background: var(--chip); }
.nav a.soon { color: var(--muted); font-weight: 500; }
.nav a.cta { background: var(--navy); color: var(--surface); }
.nav a.cta:hover { background: var(--accent); color: #fff; }
.menu-btn { display: none; margin-left: auto; background: var(--chip); border: 0; color: var(--ink); font: 600 15px var(--body); padding: 8px 12px; border-radius: 8px; cursor: pointer; }
@media (max-width: 1000px) {
  .menu-btn { display: block; order: 2; margin-left: 0; }
  .auth-slot { order: 1; margin-left: auto; }
  .nav { display: none; width: 100%; flex-direction: column; margin-left: 0; padding-bottom: 6px; order: 3; }
  .nav.open { display: flex; }
}

/* Breadcrumb + page head */
.crumbs { font-size: 14px; color: var(--muted); padding-block: 18px 0; }
.crumbs a { color: var(--muted); }
.head { padding-block: 10px 8px; }
.eyebrow { font-family: var(--mono); font-size: 12px; letter-spacing: 1.2px; text-transform: uppercase; color: var(--accent); font-weight: 600; }
h1 { font-family: var(--display); font-size: clamp(30px, 5vw, 46px); line-height: 1.08; margin: 6px 0 10px; letter-spacing: -1px; text-wrap: balance; }
h2 { font-family: var(--display); font-size: 24px; letter-spacing: -0.4px; margin: 34px 0 12px; text-wrap: balance; }
.lede { color: var(--muted); font-size: 18px; max-width: 62ch; margin: 0; }

/* Summary panel */
.summary { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; margin-top: 18px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: 24px; }
@media (max-width: 760px) { .summary { grid-template-columns: minmax(0, 1fr); } }
.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; align-content: start; }
.stat .n { font-family: var(--display); font-size: 34px; font-weight: 800; line-height: 1; font-variant-numeric: tabular-nums; }
.stat .l { font-size: 13px; color: var(--muted); margin-top: 4px; }
.note { font-size: 15px; color: var(--muted); grid-column: 1 / -1; margin: 4px 0 0; }
.tablebox { overflow-x: auto; min-width: 0; }
table.counts { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; font-size: 15px; }
table.counts th, table.counts td { padding: 6px 8px; text-align: center; border-bottom: 1px solid var(--line); }
table.counts th { font-size: 12px; font-family: var(--mono); letter-spacing: .6px; text-transform: uppercase; color: var(--muted); font-weight: 600; }
table.counts td:first-child, table.counts th:first-child { text-align: left; white-space: nowrap; }
table.counts td.z { color: var(--line); }
table.counts tr.total td { font-weight: 700; border-bottom: 0; }
.bar { display: inline-block; height: 8px; border-radius: 4px; background: var(--accent); vertical-align: middle; margin-left: 6px; }

/* Filters + chips */
.filters { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin: 22px 0 6px; }
.filters .lbl { font-size: 14px; color: var(--muted); margin-right: 4px; }
.chip { border: 1px solid var(--line); background: var(--surface); color: var(--ink); font: 600 14px var(--body); padding: 5px 12px; border-radius: 999px; cursor: pointer; text-decoration: none; }
.chip[aria-pressed="true"] { background: var(--navy); color: var(--surface); border-color: var(--navy); }
.progress { font-size: 14px; color: var(--muted); margin-left: auto; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag { font-size: 13px; background: var(--chip); color: var(--ink); padding: 3px 10px; border-radius: 999px; text-decoration: none; }
.tag b { color: var(--accent); }

/* Question card */
.year-h { font-family: var(--display); font-size: 22px; margin: 34px 0 6px; padding-bottom: 6px; border-bottom: 2px solid var(--ink); display: flex; justify-content: space-between; align-items: baseline; }
.year-h span { font-family: var(--mono); font-size: 13px; color: var(--muted); font-weight: 500; }
.q { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; margin: 14px 0; scroll-margin-top: 90px; }
.q-meta { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; font-size: 14px; margin-bottom: 10px; }
.q-no { font-family: var(--display); font-weight: 800; font-size: 18px; color: var(--accent); }
.q-src { font-family: var(--mono); font-size: 13px; color: var(--muted); }
.badge { font-family: var(--mono); font-size: 11px; letter-spacing: .6px; padding: 2px 7px; border-radius: 5px; background: var(--chip); color: var(--muted); font-weight: 600; }
.q-topic { margin-left: auto; font-size: 13px; }
.q-text { min-width: 0; overflow-x: auto; }
.q-text p { margin: 0 0 8px; }
.opts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-top: 14px; }
@media (max-width: 560px) { .opts { grid-template-columns: minmax(0, 1fr); } }
.opt { display: flex; gap: 10px; align-items: flex-start; text-align: left; width: 100%; background: var(--bg); border: 1.5px solid var(--line); border-radius: 8px; padding: 10px 12px; font: inherit; color: var(--ink); cursor: pointer; min-width: 0; overflow-x: auto; }
.opt:hover:not([disabled]) { border-color: var(--accent); }
.opt .k { font-family: var(--mono); font-weight: 700; color: var(--muted); flex: none; }
.opt.is-right { border-color: var(--right); background: var(--right-soft); }
.opt.is-right .k { color: var(--right); }
.opt.is-wrong { border-color: var(--wrong); background: var(--wrong-soft); }
.opt.is-wrong .k { color: var(--wrong); }
.opt[disabled] { cursor: default; }
.tita { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; align-items: center; }
.tita input { font: 600 16px var(--mono); padding: 9px 12px; border: 1.5px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--ink); width: 180px; max-width: 100%; }
.tita input.is-right { border-color: var(--right); background: var(--right-soft); }
.tita input.is-wrong { border-color: var(--wrong); background: var(--wrong-soft); }
.tita .hint { font-size: 13px; color: var(--muted); }
.feedback { font-weight: 600; margin-top: 10px; font-size: 15px; }
.feedback.ok { color: var(--right); }
.feedback.no { color: var(--wrong); }
.actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.btn { font: 600 14px var(--body); border-radius: 8px; padding: 7px 14px; cursor: pointer; border: 1.5px solid var(--line); background: var(--surface); color: var(--ink); text-decoration: none; display: inline-flex; align-items: center; gap: 6px; }
.btn:hover { border-color: var(--ink); }
.btn.primary { background: var(--navy); color: var(--surface); border-color: var(--navy); }
.btn.primary:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.video { border-color: #d33; color: #d33; }
.solution { margin-top: 14px; border-top: 1px dashed var(--line); padding-top: 12px; }
.solution h4 { margin: 0 0 6px; font-family: var(--display); font-size: 16px; }
.solution p { margin: 0 0 6px; overflow-x: auto; }
.solution .ans { font-weight: 700; color: var(--right); margin-top: 8px; }
.video-box { margin-top: 12px; position: relative; width: 100%; max-width: 100%; aspect-ratio: 16 / 9; border-radius: 8px; overflow: hidden; background: #000; }
.video-box iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

/* Hub + home */
.hero { padding-block: 44px 12px; }
.hero h1 { font-size: clamp(36px, 6vw, 60px); max-width: 16ch; }
.paths { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin-top: 26px; }
@media (max-width: 860px) { .paths { grid-template-columns: minmax(0, 1fr); } }
.path { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; text-decoration: none; color: var(--ink); display: flex; flex-direction: column; gap: 6px; }
.path:hover { border-color: var(--accent); }
.path .t { font-family: var(--display); font-size: 21px; font-weight: 700; }
.path .d { color: var(--muted); font-size: 15px; }
.path .go { margin-top: auto; padding-top: 8px; font-weight: 700; color: var(--accent); font-size: 15px; }
.sections { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
.sec { padding: 8px 14px; border-radius: 8px; border: 1px solid var(--line); background: var(--surface); font-weight: 700; text-decoration: none; color: var(--ink); font-size: 15px; }
.sec.live { border-color: var(--navy); }
.sec .s { font-weight: 500; color: var(--muted); font-size: 13px; margin-left: 6px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 10px; }
.tile { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; text-decoration: none; color: var(--ink); display: flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.tile:hover { border-color: var(--accent); }
.tile .nm { font-weight: 600; }
.tile .ct { font-family: var(--mono); font-size: 13px; color: var(--muted); white-space: nowrap; }
.group-h { font-family: var(--mono); font-size: 12px; letter-spacing: 1.2px; text-transform: uppercase; color: var(--muted); margin: 22px 0 8px; }
.papers { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 10px; }
.papers .year { grid-column: 1 / -1; font-family: var(--display); font-weight: 700; font-size: 18px; margin-top: 12px; }
.pager { display: flex; justify-content: space-between; gap: 12px; margin: 30px 0; flex-wrap: wrap; }
.soon-box { background: var(--surface); border: 1px dashed var(--line); border-radius: var(--radius); padding: 28px; margin-top: 22px; }
.promo { background: var(--navy); color: var(--surface); border-radius: var(--radius); padding: 22px; margin: 40px 0 10px; display: flex; gap: 16px; align-items: center; flex-wrap: wrap; justify-content: space-between; }
.promo p { margin: 0; max-width: 60ch; }
.promo .btn { background: var(--accent); border-color: var(--accent); color: #fff; }
footer { border-top: 1px solid var(--line); margin-top: 40px; padding-block: 22px 32px; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; gap: 12px; justify-content: space-between; flex-wrap: wrap; }
.katex { font-size: 1.04em; }
/* DILR sets */
.dset { margin: 22px 0 30px; scroll-margin-top: 80px; }
.dset-head { background: var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: var(--radius); padding: 18px 20px; }
.dset-title { font-family: var(--display); font-size: 20px; margin: 4px 0 10px; }
.directions p { margin: 0 0 10px; }
.directions ul { margin: 0 0 10px; padding-left: 22px; }
table.dtable { border-collapse: collapse; margin: 6px 0 12px; font-size: 15px; font-variant-numeric: tabular-nums; }
table.dtable th, table.dtable td { border: 1px solid var(--line); padding: 6px 10px; text-align: center; }
table.dtable thead th { background: var(--chip); font-weight: 700; }
table.dtable tbody th { background: var(--chip); font-weight: 600; text-align: left; }
table.dtable caption { caption-side: top; text-align: left; font-weight: 600; padding-bottom: 6px; color: var(--muted); }
.dfig { margin: 8px 0 14px; overflow-x: auto; }
.dfig svg { max-width: 100%; height: auto; color: var(--ink); }
.dfig figcaption { font-size: 14px; color: var(--muted); }
.dfig img { display: block; max-width: 100%; height: auto; background: #fff; padding: 8px; border-radius: 8px; border: 1px solid var(--line); }
.setup { margin-top: 12px; border-top: 1px dashed var(--line); padding-top: 10px; }
.setup summary { cursor: pointer; font-weight: 700; color: var(--accent); font-size: 15px; }
.setup-body { margin-top: 10px; }
.setup-body p { margin: 0 0 8px; overflow-x: auto; }
.solution .tablebox, .setup-body .tablebox { margin: 4px 0 10px; }
.set-actions:empty { display: none; }
.dset-qs { margin-left: 18px; border-left: 2px dashed var(--line); padding-left: 14px; }
@media (max-width: 560px) { .dset-qs { margin-left: 4px; padding-left: 8px; } }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }
/* VARC */
.va-asks, .va-topic { margin: 4px 0; }
.va-asks .lbl, .va-topic .lbl { font-family: var(--mono); font-size: 11px; letter-spacing: .8px; text-transform: uppercase; color: var(--muted); margin-right: 8px; font-weight: 600; }
.vpass { background: var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: var(--radius); padding: 14px 18px; }
.vpass .note { margin: 4px 0 0; }
a.badge { text-decoration: none; }
.callout { background: var(--accent-soft); border-radius: var(--radius); padding: 14px 18px; margin: 18px 0; font-size: 15px; }
.tile.stack { flex-direction: column; align-items: flex-start; gap: 2px; }

/* ===== Sign-in, community, promotions, admin ===== */
.wrap.wide { max-width: 1240px; }
.auth-slot:empty { display: none; }
.btn.signin { padding: 6px 12px; }
.umenu { position: relative; }
.ubtn { display: flex; align-items: center; gap: 8px; background: var(--chip); border: 0; border-radius: 999px; padding: 4px 12px 4px 4px; font: 600 14px var(--body); color: var(--ink); cursor: pointer; max-width: 220px; }
.ubtn .un { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.udrop { position: absolute; right: 0; top: calc(100% + 6px); background: var(--surface); border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 12px 30px rgba(0,0,0,.15); min-width: 180px; padding: 6px; z-index: 20; display: flex; flex-direction: column; }
.udrop[hidden] { display: none; }
.udrop a, .udrop button { text-align: left; padding: 8px 10px; border-radius: 6px; color: var(--ink); text-decoration: none; font: 600 14px var(--body); background: none; border: 0; cursor: pointer; }
.udrop a:hover, .udrop button:hover { background: var(--chip); }
.av { display: inline-grid; place-items: center; border-radius: 50%; color: #fff; font: 700 11px var(--body); flex: none; object-fit: cover; vertical-align: middle; }
.ub { font: 700 10.5px var(--mono); letter-spacing: .4px; text-transform: uppercase; padding: 2px 7px; border-radius: 999px; white-space: nowrap; }
.ub-active { background: var(--right-soft); color: var(--right); }
.ub-super { background: var(--accent-soft); color: var(--accent); }
.ub-admin { background: var(--navy); color: var(--surface); }
.st { font: 600 11px var(--mono); padding: 2px 7px; border-radius: 5px; background: var(--chip); color: var(--muted); white-space: nowrap; }
.st-pending { background: #fff3cd; color: #7a5a00; }
.st-published { background: var(--right-soft); color: var(--right); }
.st-removed, .st-rejected, .st-deleted { background: var(--wrong-soft); color: var(--wrong); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .st-pending { background: #3a3110; color: #f2cf6b; } }
:root[data-theme="dark"] .st-pending { background: #3a3110; color: #f2cf6b; }
.lnk { background: none; border: 0; padding: 2px 4px; font: 600 13px var(--body); color: var(--muted); cursor: pointer; border-radius: 4px; }
.lnk:hover { color: var(--ink); background: var(--chip); }
.lnk.lnk-adm { color: var(--accent); }
.btn.sm { padding: 4px 10px; font-size: 13px; }
.btn.danger { color: var(--wrong); border-color: var(--wrong-soft); }
.btn[disabled] { opacity: .55; cursor: default; }
.note.small, .small { font-size: 13px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; margin: 14px 0; }
.soon-box { background: var(--surface); border: 1px dashed var(--line); border-radius: var(--radius); padding: 24px; margin-top: 18px; }
.soon-box h2 { margin-top: 0; }

/* forms */
.form { display: flex; flex-direction: column; gap: 14px; }
.form[hidden] { display: none; }
.form label { display: flex; flex-direction: column; gap: 5px; font-weight: 600; font-size: 14px; }
.form label.chk { flex-direction: row; align-items: center; gap: 8px; }
.form .two { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
@media (max-width: 600px) { .form .two { grid-template-columns: minmax(0, 1fr); } }
input:not([type=checkbox]), select, textarea { font: 16px var(--body); color: var(--ink); background: var(--bg); border: 1.5px solid var(--line); border-radius: 8px; padding: 9px 11px; width: 100%; max-width: 100%; min-width: 0; }
input:focus, select:focus, textarea:focus { border-color: var(--accent); outline: none; }
textarea { resize: vertical; line-height: 1.5; }
.hp { position: absolute !important; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.login { max-width: 460px; }
.btn.google { width: 100%; justify-content: center; padding: 11px; font-size: 16px; gap: 10px; }
.or { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 13px; margin: 18px 0; }
.or::before, .or::after { content: ""; flex: 1; border-top: 1px solid var(--line); }
.acct-h { display: flex; gap: 14px; align-items: center; margin-bottom: 14px; }
.acct-h h2 { margin: 0; }
.mylist { padding-left: 18px; }
.mylist li { margin: 6px 0; }
.thanks h2 { margin-top: 0; }

/* toasts + dialogs */
.toasts { position: fixed; left: 50%; bottom: max(18px, env(safe-area-inset-bottom)); transform: translateX(-50%); z-index: 60; display: flex; flex-direction: column; gap: 8px; width: min(92vw, 440px); }
.toast { background: var(--navy); color: var(--surface); padding: 10px 14px; border-radius: 10px; font-weight: 600; font-size: 15px; box-shadow: 0 10px 30px rgba(0,0,0,.2); transition: opacity .4s, transform .4s; }
.toast.ok { background: var(--right); color: #fff; }
.toast.err { background: var(--wrong); color: #fff; }
.toast.out { opacity: 0; transform: translateY(8px); }
.modal-back { position: fixed; inset: 0; background: rgba(10,14,25,.55); z-index: 50; display: grid; place-items: center; padding: 16px; }
.modal { background: var(--surface); color: var(--ink); border-radius: 14px; padding: 22px; width: min(100%, 440px); max-height: 90vh; overflow: auto; position: relative; box-shadow: 0 20px 60px rgba(0,0,0,.3); }
.modal h3 { font-family: var(--display); margin: 0 0 8px; font-size: 21px; padding-right: 26px; }
.modal textarea { margin: 8px 0; }
.modal-act { display: flex; justify-content: flex-end; gap: 8px; margin-top: 10px; }
.x { position: absolute; top: 8px; right: 10px; background: none; border: 0; font-size: 24px; line-height: 1; color: var(--muted); cursor: pointer; padding: 4px 6px; }

/* promotions */
.promo-strip { background: var(--accent); color: #fff; }
.promo-strip .wrap { display: flex; align-items: center; gap: 14px; padding-block: 8px; position: relative; padding-right: 44px; flex-wrap: wrap; }
.promo-strip .btn { background: #fff; color: var(--ink); border-color: #fff; padding: 4px 12px; }
.promo-strip .x { color: #fff; top: 50%; transform: translateY(-50%); }
.promo-corner { position: fixed; right: 18px; bottom: max(18px, env(safe-area-inset-bottom)); width: min(340px, calc(100vw - 32px)); background: var(--surface); border: 1px solid var(--line); border-top: 4px solid var(--accent); border-radius: 12px; box-shadow: 0 16px 40px rgba(0,0,0,.2); z-index: 40; overflow: hidden; animation: pop .35s ease-out; }
.promo-corner img, .promo-pop img { width: 100%; display: block; aspect-ratio: 2 / 1; object-fit: cover; }
.pc-in { padding: 14px 16px; position: relative; }
.pc-in b { display: block; font-family: var(--display); font-size: 18px; padding-right: 24px; }
.pc-in p { margin: 6px 0 10px; color: var(--muted); font-size: 15px; }
.promo-pop .modal { padding: 0 0 20px; text-align: center; width: min(100%, 460px); }
.promo-pop h3 { margin: 18px 20px 6px; padding: 0; }
.promo-pop p { margin: 0 22px 14px; color: var(--muted); }
.promo-pop .x { background: rgba(255,255,255,.85); border-radius: 50%; color: #222; z-index: 2; }
.promo-cta { background: var(--accent) !important; border-color: var(--accent) !important; color: #fff !important; }
@keyframes pop { from { transform: translateY(20px); opacity: 0; } to { transform: none; opacity: 1; } }
@media (prefers-reduced-motion: reduce) { .promo-corner { animation: none; } }

/* discussions */
.disc-btn[aria-expanded="true"] { border-color: var(--accent); color: var(--accent); }
.disc { margin-top: 14px; border-top: 1px dashed var(--line); padding-top: 12px; }
.th-head { font-size: 15px; margin-bottom: 8px; }
.composer { display: flex; flex-direction: column; gap: 8px; margin: 8px 0 14px; }
.composer.editing { margin: 4px 0; }
.cp-row { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }
.cm { margin: 10px 0 0; }
.cm-head { display: flex; align-items: center; gap: 7px; flex-wrap: wrap; font-size: 14px; }
.cm-head .nm { font-weight: 700; }
.when { color: var(--muted); font-size: 13px; }
.cm-body { margin: 4px 0 2px 31px; font-size: 16px; overflow-wrap: anywhere; }
.cm-body p { margin: 0 0 6px; }
.cm-ph { color: var(--muted); font-style: italic; font-size: 14px; margin: 4px 0; }
.cm-acts { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; margin-left: 27px; }
.cm-replies { margin-left: 14px; padding-left: 14px; border-left: 2px solid var(--line); }
.cm > .composer { margin-left: 31px; }
@media (max-width: 560px) { .cm-replies { margin-left: 4px; padding-left: 10px; } .cm-body, .cm > .composer { margin-left: 0; } .cm-acts { margin-left: -4px; } }
.votes { display: inline-flex; align-items: center; gap: 2px; }
.votes button { background: none; border: 0; color: var(--muted); cursor: pointer; font-size: 13px; padding: 3px 5px; border-radius: 5px; line-height: 1; }
.votes button:hover:not([disabled]) { background: var(--chip); color: var(--ink); }
.votes button.on.vup { color: var(--accent); }
.votes button.on.vdn { color: #4a6fd1; }
.votes .vs { font: 700 13px var(--mono); min-width: 18px; text-align: center; }
.imenu { display: inline-flex; flex-wrap: wrap; gap: 2px; }

/* community list + thread */
.cm-bar { display: flex; flex-direction: column; gap: 12px; margin-top: 18px; }
.cm-bar .chips { display: flex; gap: 8px; flex-wrap: wrap; }
.cm-tools { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.cm-tools input { flex: 1 1 200px; width: auto; }
.cm-tools select { width: auto; }
.cat-desc { margin: 10px 0 4px; }
.prow { display: flex; gap: 12px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px; margin: 10px 0; }
.prow .pv .votes, .pfull .pv .votes { flex-direction: column; }
.pm { min-width: 0; flex: 1; }
.pt { font-family: var(--display); font-weight: 700; font-size: 18px; line-height: 1.3; }
.pt a { color: var(--ink); text-decoration: none; }
.pt a:hover { color: var(--accent); }
.pin { margin-right: 6px; }
.pmeta { display: flex; align-items: center; gap: 7px; flex-wrap: wrap; font-size: 13px; color: var(--muted); margin: 5px 0; }
.pmeta .cc { color: var(--muted); text-decoration: none; }
.psnip { margin: 4px 0 0; color: var(--muted); font-size: 15px; overflow-wrap: anywhere; }
.pmore { text-align: center; margin: 14px 0; }
.pfull { display: flex; gap: 12px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; margin: 14px 0; }
.ptitle { font-size: clamp(24px, 4vw, 34px); margin: 6px 0 10px; }
.pbody { font-size: 17px; overflow-wrap: anywhere; }
.pacts { margin-left: 0; margin-top: 8px; }
.pcomments { margin-top: 8px; }

/* admin */
.adm { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 20px; align-items: start; margin-top: 10px; }
.adm-tabs { display: flex; flex-direction: column; gap: 4px; position: sticky; top: 80px; }
.adm-tabs button { text-align: left; background: none; border: 0; padding: 9px 12px; border-radius: 8px; font: 600 15px var(--body); color: var(--ink); cursor: pointer; display: flex; justify-content: space-between; }
.adm-tabs button:hover { background: var(--chip); }
.adm-tabs button[aria-selected="true"] { background: var(--navy); color: var(--surface); }
.adm-tabs .cnt { background: var(--accent); color: #fff; border-radius: 999px; font: 700 12px var(--mono); padding: 1px 7px; }
.adm-tabs .cnt:empty { display: none; }
.adm-body h2 { margin-top: 0; }
@media (max-width: 860px) { .adm { grid-template-columns: minmax(0, 1fr); } .adm-tabs { flex-direction: row; overflow-x: auto; position: static; } .adm-tabs button { white-space: nowrap; } }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 10px; }
.stat-card { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 14px; text-align: left; cursor: pointer; display: flex; flex-direction: column; gap: 4px; font: inherit; color: var(--ink); }
.stat-card:hover { border-color: var(--accent); }
.stat-card .n { font: 800 30px var(--display); }
.stat-card .l { color: var(--muted); font-size: 14px; }
.filters-row { display: flex; gap: 8px; flex-wrap: wrap; margin: 10px 0 14px; }
.filters-row input { flex: 1 1 220px; width: auto; }
.filters-row select { width: auto; }
.qitem, .citem { padding: 14px 16px; margin: 10px 0; }
.qi-h { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; font-size: 14px; }
.qi-b { margin: 8px 0; overflow-wrap: anywhere; }
.qi-b p { margin: 0 0 6px; }
.qi-a { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.qi-a select, .qi-a input { width: auto; flex: 0 1 auto; padding: 5px 8px; font-size: 14px; }
.qi-a .enote { flex: 1 1 200px; }
table.atable { border-collapse: collapse; width: 100%; font-size: 14px; }
table.atable th, table.atable td { border-bottom: 1px solid var(--line); padding: 8px; text-align: left; vertical-align: top; }
table.atable th { font: 600 12px var(--mono); text-transform: uppercase; letter-spacing: .5px; color: var(--muted); }
table.atable td.acts { display: flex; gap: 4px; flex-wrap: wrap; }
table.atable input { padding: 5px 8px; font-size: 14px; }
.wchip { display: inline-flex; align-items: center; gap: 6px; }
.wchip button { background: none; border: 0; cursor: pointer; color: var(--muted); font-size: 16px; padding: 0 2px; }
.ppreview { border: 1px dashed var(--line); border-radius: 8px; padding: 12px; }
.ppreview img { width: 100%; max-width: 340px; aspect-ratio: 2 / 1; object-fit: cover; display: block; margin-bottom: 6px; border-radius: 6px; }
.imgrow { display: flex; flex-direction: column; gap: 8px; }
.imgrow .upl { align-self: flex-start; cursor: pointer; }
.imgrow > .btn, .imgrow > .note { display: inline-flex; }
.pv-strip { background: var(--accent); color: #fff; padding: 8px 12px; border-radius: 6px; }
.pv-corner, .pv-popup { border: 1px solid var(--line); border-top: 4px solid var(--accent); border-radius: 10px; padding: 12px; max-width: 340px; background: var(--surface); }
.pv-popup { max-width: 420px; text-align: center; }
.promo-strip .promo-cta { background: #fff !important; color: #1b1b1b !important; border-color: #fff !important; }

/* embedded CAT Planner */
.planner-wrap { display: flex; flex-direction: column; min-height: calc(100vh - 61px); }
.planner-bar { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; padding-block: 8px; font-size: 14px; color: var(--muted); }
.planner-bar b { color: var(--ink); }
.lnk-out { font-size: 13px; }
.planner-frame { flex: 1; width: 100%; min-height: calc(100vh - 110px); border: 0; border-top: 1px solid var(--line); background: #fff; display: block; }
body:has(.planner-frame) footer { display: none; }

/* home: spotlight / question of the day */
.hero-top { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 36px; align-items: center; }
@media (max-width: 900px) { .hero-top { grid-template-columns: minmax(0, 1fr); gap: 22px; } }
.hero-side:empty { display: none; }
.hs-skel { min-height: 260px; border-radius: 14px; background: var(--chip); }
.hs-card { background: var(--surface); border: 1px solid var(--line); border-top: 4px solid var(--accent); border-radius: 14px; overflow: hidden; box-shadow: 0 14px 40px rgba(16, 32, 63, .08); }
.hs-media { display: block; position: relative; width: 100%; aspect-ratio: 16 / 9; background: #000; border: 0; padding: 0; cursor: pointer; }
.hs-media img, .hs-media video, .hs-media iframe { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; border: 0; display: block; }
div.hs-media { cursor: default; }
.hs-play { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); width: 64px; height: 64px; border-radius: 50%; background: rgba(217, 112, 28, .92); color: #fff; display: grid; place-items: center; font-size: 24px; padding-left: 4px; box-shadow: 0 6px 20px rgba(0,0,0,.35); }
.hs-yt:hover .hs-play { background: var(--accent); transform: translate(-50%, -50%) scale(1.06); }
.hs-in { padding: 18px 20px 20px; }
.hs-in h3 { font-family: var(--display); font-size: 22px; line-height: 1.2; margin: 6px 0 8px; }
.hs-in p { margin: 0 0 14px; color: var(--muted); }
.qd-meta { font-size: 13px; margin: 6px 0 10px !important; }
.qd-q { color: var(--ink) !important; font-size: 17px; line-height: 1.55; display: -webkit-box; -webkit-line-clamp: 7; -webkit-box-orient: vertical; overflow: hidden; }
.qd-act { display: flex; gap: 8px; flex-wrap: wrap; }

/* formatting toolbar + formatted text */
.fmtbar { display: flex; gap: 4px; flex-wrap: wrap; border: 1.5px solid var(--line); border-bottom: 0; border-radius: 8px 8px 0 0; padding: 5px; background: var(--chip); }
.fmtbar button { background: var(--surface); border: 1px solid var(--line); border-radius: 6px; padding: 4px 10px; font: 600 14px var(--body); color: var(--ink); cursor: pointer; min-width: 34px; }
.fmtbar button:hover { border-color: var(--accent); }
.fmtbar .pvb { margin-left: auto; }
.fmtbar + textarea { border-radius: 0 0 8px 8px; }
.fmtpv { border: 1.5px solid var(--line); border-radius: 0 0 8px 8px; padding: 10px 14px; min-height: 120px; background: var(--surface); }
.pbody ul, .pbody ol, .cm-body ul, .cm-body ol, .fmtpv ul, .fmtpv ol, .qi-b ul, .qi-b ol { margin: 4px 0 10px; padding-left: 24px; }
.pbody li, .cm-body li, .fmtpv li { margin: 3px 0; }

/* ================= Phone layout (app-like) ================= */
.tabbar { display: none; }
.mb-ic { display: inline-flex; flex-direction: column; gap: 4px; width: 20px; }
.mb-ic i { display: block; height: 2px; border-radius: 2px; background: currentColor; transition: transform .2s, opacity .2s; }
.menu-btn[aria-expanded="true"] .mb-ic i:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-btn[aria-expanded="true"] .mb-ic i:nth-child(2) { opacity: 0; }
.menu-btn[aria-expanded="true"] .mb-ic i:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.mb-tx { display: none; }
@media (min-width: 1001px) { .mb-ic { display: none; } }
@media (max-width: 1000px) {
  .menu-btn { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 42px; padding: 0; border-radius: 10px; }
  .auth-slot { margin-left: auto; }
  .top .wrap:has(.auth-slot:empty) .menu-btn { margin-left: auto; }
}
@media (max-width: 760px) {
  html { -webkit-text-size-adjust: 100%; }
  body { font-size: 16.5px; padding-bottom: calc(66px + env(safe-area-inset-bottom, 0px)); -webkit-tap-highlight-color: rgba(217, 112, 28, .15); }
  .top .wrap { min-height: 56px; gap: 10px; padding-block: 6px; }
  .brand { font-size: 20px; }
  .ubtn { padding: 3px; } .ubtn .un { display: none; }
  .btn.signin { padding: 6px 12px; font-size: 14px; }
  /* menu sheet */
  .nav.open { position: absolute; left: 0; right: 0; top: 100%; background: var(--surface); border-bottom: 1px solid var(--line); box-shadow: 0 18px 40px rgba(16, 32, 63, .14); padding: 6px 16px 16px; gap: 0; }
  .nav.open a { padding: 14px 4px; font-size: 17px; border-radius: 0; border-bottom: 1px solid var(--line); background: none; }
  .nav.open a[aria-current="page"] { color: var(--accent); }
  .nav.open a.cta { margin-top: 12px; border-radius: 10px; text-align: center; border-bottom: 0; background: var(--navy); color: var(--surface); }
  .top { position: sticky; }
  /* bottom tab bar */
  .tabbar { display: grid; grid-template-columns: repeat(5, 1fr); position: fixed; left: 0; right: 0; bottom: 0; z-index: 30; background: color-mix(in srgb, var(--surface) 94%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-top: 1px solid var(--line); padding: 6px 4px calc(6px + env(safe-area-inset-bottom, 0px)); }
  .tabbar a { display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 4px 0; color: var(--muted); text-decoration: none; font: 600 11.5px var(--body); border-radius: 10px; }
  .tabbar a[aria-current="page"] { color: var(--accent); }
  .tabbar a[aria-current="page"] svg { stroke-width: 2.3; }
  /* type + spacing */
  h1 { font-size: clamp(27px, 7.6vw, 34px); letter-spacing: -.6px; margin-bottom: 8px; }
  .hero h1 { font-size: clamp(32px, 9vw, 40px); }
  h2 { font-size: 21px; margin: 26px 0 10px; }
  .lede { font-size: 16px; }
  .hero { padding-block: 22px 4px; }
  .hero .lede { font-size: 16px; }
  .crumbs { padding-top: 12px; font-size: 13px; white-space: nowrap; overflow-x: auto; scrollbar-width: none; }
  .crumbs::-webkit-scrollbar { display: none; }
  /* horizontal scrolling chip rows instead of wrapping */
  .sections, .filters, .cm-bar .chips { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; margin-inline: -16px; padding-inline: 16px; scroll-padding-inline: 16px; }
  .sections::-webkit-scrollbar, .filters::-webkit-scrollbar, .cm-bar .chips::-webkit-scrollbar { display: none; }
  .sections > *, .filters > *, .cm-bar .chips > * { flex: none; }
  .filters .progress { margin-left: 8px; white-space: nowrap; }
  .sec { padding: 8px 12px; }
  /* home: compact 2-column shortcuts */
  .paths { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-top: 18px; }
  .path { padding: 14px; gap: 4px; border-radius: 12px; }
  .path .t { font-size: 16px; line-height: 1.25; }
  .path .d { display: none; }
  .path .go { padding-top: 6px; font-size: 14px; }
  .hs-in { padding: 16px; }
  .hs-in h3 { font-size: 20px; }
  .qd-q { font-size: 16px; -webkit-line-clamp: 6; }
  /* edge-to-edge cards: more width for questions and maths */
  .q, .summary, .dset-head, .vpass, .pfull, .prow, .card, .soon-box, .promo { margin-inline: -16px; border-radius: 0; border-left: 0; border-right: 0; }
  .dset-head { border-left: 0; border-top: 4px solid var(--accent); }
  .q { padding: 16px; margin-block: 10px; }
  .summary { padding: 16px; gap: 16px; }
  .card { padding: 16px; }
  .promo { padding: 18px 16px; }
  .dset-qs { margin-left: 0; padding-left: 0; border-left: 0; }
  .year-h { font-size: 19px; margin-top: 26px; }
  .q-meta { gap: 6px 10px; }
  .q-topic { margin-left: 0; }
  .q-text { font-size: 16.5px; }
  .opts { gap: 8px; }
  .opt { min-height: 48px; align-items: center; padding: 10px 12px; }
  .actions { gap: 8px; }
  .actions .btn { flex: 1 1 auto; justify-content: center; min-height: 40px; }
  .tita input { flex: 1 1 140px; width: auto; }
  .solution p { font-size: 16px; }
  .stat .n { font-size: 30px; }
  table.counts th, table.counts td { padding: 6px 4px; }
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .tile { padding: 12px; flex-direction: column; align-items: flex-start; justify-content: space-between; gap: 4px; }
  .tile .nm { font-size: 15px; line-height: 1.3; }
  .tile .ct { font-size: 12px; }
  /* community */
  .prow { padding: 12px 16px; margin-block: 0; border-top: 0; }
  .plist .prow:first-child { border-top: 1px solid var(--line); }
  .pt { font-size: 17px; }
  .pfull { padding: 14px 16px; }
  .cm-tools input { flex-basis: 100%; }
  .cm-tools select { flex: 1; }
  /* promotions + toasts sit above the tab bar */
  .promo-corner { left: 10px; right: 10px; width: auto; bottom: calc(74px + env(safe-area-inset-bottom, 0px)); }
  .promo-corner img { aspect-ratio: 3 / 1; }
  .toasts { bottom: calc(78px + env(safe-area-inset-bottom, 0px)); }
  footer { margin-top: 24px; padding-block: 18px 22px; }
  footer .wrap { flex-direction: column; gap: 6px; }
  /* embedded planner fills the phone screen above the tab bar */
  .planner-frame { height: calc(100vh - 56px - 66px - 40px) !important; min-height: 480px !important; }
  body:has(.planner-frame) { padding-bottom: 66px; }
}
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .tabbar { background: color-mix(in srgb, var(--surface) 92%, transparent); } }

/* ---- placement practice additions ---- */
.brand { display: inline-flex; align-items: center; gap: 8px; }
.brand-mark { width: 28px; height: 28px; border-radius: 7px; background: #fff; }
.q-text code, .opt code, .solution code { font-family: var(--mono); font-size: 0.92em; background: var(--chip); padding: 1px 5px; border-radius: 4px; }
pre.code { font-family: var(--mono); font-size: 14px; line-height: 1.5; background: var(--chip); border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; overflow-x: auto; margin: 6px 0 10px; white-space: pre; }
.q-text sup, .opt sup, .solution sup { font-size: 0.72em; }
.opt > span:last-child { white-space: pre-line; }
.top .menu-btn { margin-left: auto; }
.passage { background: var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: var(--radius); padding: 18px 20px; margin: 22px 0 10px; }
.passage h3 { margin: 0 0 8px; font-family: var(--display); font-size: 18px; }
.passage p { margin: 0 0 10px; }
.passage .note { color: var(--muted); font-size: 14px; margin: 0; }
@media (max-width: 600px) { pre.code { font-size: 12.5px; padding: 10px 12px; } }