/* GH Pathshala — site styles */
:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-2: #eef2f9;
  --ink: #14203a;
  --ink-2: #44506a;
  --ink-3: #667089;
  --line: #dfe4ee;
  --brand: #1e3a8a;
  --brand-2: #2747a6;
  --brand-soft: #e7edfb;
  --brand-text: #1e3a8a;
  --btn: #1e3a8a;
  --btn-hover: #172f73;
  --btn-ink: #ffffff;
  --accent: #f08a24;
  --accent-soft: #fff1e0;
  --accent-text: #8a4506;
  --logo-accent: #d9690f;
  --ok: #137342;
  --ok-soft: #e4f4ea;
  --bad: #b42318;
  --bad-soft: #fdebe9;
  --yt: #d91c10;
  --hero-1: #1e3a8a;
  --hero-2: #2b4fb8;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgba(20, 32, 58, .05), 0 6px 20px rgba(20, 32, 58, .06);
  --font: "Mukta", system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans Devanagari", sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1422;
    --surface: #151d30;
    --surface-2: #1b2540;
    --ink: #e9edf7;
    --ink-2: #b7c0d6;
    --ink-3: #8e98b1;
    --line: #28334d;
    --brand: #3b5fd0;
    --brand-2: #5476e0;
    --brand-soft: #1c2950;
    --brand-text: #9db8ff;
    --btn: #3b5fd0;
    --btn-hover: #4a6ce0;
    --btn-ink: #ffffff;
    --accent: #f5a04a;
    --accent-soft: #33250f;
    --accent-text: #ffcf9c;
    --logo-accent: #f5a04a;
    --ok: #62d396;
    --ok-soft: #12321f;
    --bad: #ff8b80;
    --bad-soft: #3a1b19;
    --yt: #ff4436;
    --hero-1: #15245a;
    --hero-2: #1f3780;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 6px 20px rgba(0, 0, 0, .25);
    color-scheme: dark;
  }
}

/* Language switching: English by default, Hindi when html[data-lang="hi"] */
[data-lang="en"] .hi,
[data-lang="hi"] .en { display: none !important; }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 80px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 17.5px;
  line-height: 1.6;
  overflow-x: hidden;
}
[lang="hi"] { line-height: 1.7; }
img, svg { max-width: 100%; }
a { color: var(--brand-text); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
h1, h2, h3 { line-height: 1.25; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(1.75rem, 1.2rem + 2.2vw, 2.5rem); font-weight: 800; }
h2 { font-size: clamp(1.35rem, 1.1rem + 1vw, 1.7rem); font-weight: 700; margin-top: 1.6em; }
h3 { font-size: 1.15rem; font-weight: 700; margin-top: 1.3em; }
p { margin: 0 0 1em; }
.container { max-width: 1140px; margin: 0 auto; padding: 0 16px; }
.muted { color: var(--ink-3); }
.small { font-size: .9rem; }
.skip-link { position: absolute; left: -999px; top: 8px; background: var(--btn); color: var(--btn-ink); padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip-link:focus { left: 8px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-row { display: flex; align-items: center; gap: 16px; min-height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); flex-shrink: 0; }
.brand-name { font-weight: 800; font-size: 1.3rem; letter-spacing: -.005em; white-space: nowrap; }
.brand-name .b1 { color: var(--logo-accent); }
.brand-name .b2 { color: var(--brand-text); }
.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a {
  text-decoration: none; color: var(--ink-2); font-weight: 600; font-size: 1rem;
  padding: 8px 12px; border-radius: 8px;
}
.nav a:hover { background: var(--surface-2); color: var(--ink); }
.nav a[aria-current] { color: var(--brand-text); background: var(--brand-soft); }
.nav .nav-yt { color: var(--yt); display: inline-flex; align-items: center; gap: 6px; }
.header-actions { display: flex; align-items: center; gap: 8px; }
.lang-btn {
  font: inherit; font-weight: 700; font-size: .95rem; cursor: pointer;
  border: 1.5px solid var(--brand-text); color: var(--brand-text); background: transparent;
  border-radius: 999px; padding: 5px 14px; line-height: 1.3; min-height: 38px;
}
.lang-btn:hover { background: var(--brand-soft); }
.menu-btn { display: none; background: none; border: 0; color: var(--ink); padding: 6px; cursor: pointer; border-radius: 8px; min-height: 40px; }

@media (max-width: 980px) {
  .header-row { flex-wrap: wrap; }
  .menu-btn { display: inline-flex; }
  .header-actions { margin-left: auto; }
  .nav {
    display: none; order: 3; width: 100%; flex-direction: column; align-items: stretch;
    gap: 2px; padding: 4px 0 12px; margin: 0;
  }
  .nav.open { display: flex; }
  .nav a { padding: 12px; font-size: 1.05rem; }
}

/* ---------- Breadcrumbs ---------- */
.crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; font-size: .92rem; color: var(--ink-3); padding-top: 18px; padding-bottom: 4px; }
.crumbs a { color: var(--ink-3); }
.crumbs .sep { opacity: .6; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: inherit; font-weight: 700; font-size: 1rem; line-height: 1.2;
  padding: 12px 20px; min-height: 46px; border-radius: 10px;
  text-decoration: none; cursor: pointer; border: 1.5px solid transparent;
}
.btn-primary { background: var(--btn); color: var(--btn-ink); }
.btn-primary:hover { background: var(--btn-hover); }
.btn-ghost { background: transparent; color: var(--brand-text); border-color: var(--line); }
.btn-ghost:hover { background: var(--surface-2); }
.btn-yt { background: var(--yt); color: #fff; }
.btn-yt:hover { filter: brightness(1.08); }
.btn-light { background: #fff; color: #1e3a8a; }
.btn-light:hover { background: #eef2ff; }
.btn-outline-light { background: transparent; color: #fff; border-color: rgba(255,255,255,.55); }
.btn-outline-light:hover { background: rgba(255,255,255,.1); }
.btn-sm { padding: 8px 14px; min-height: 38px; font-size: .95rem; }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(135deg, var(--hero-1), var(--hero-2));
  color: #fff; padding: 56px 0 64px; position: relative; overflow: hidden;
}
.hero::after {
  content: ""; position: absolute; right: -80px; top: -60px; width: 360px; height: 360px;
  border-radius: 50%; background: radial-gradient(circle, rgba(240,138,36,.35), transparent 70%);
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 1; max-width: 760px; }
.hero .container { position: relative; z-index: 1; }
.hero .eyebrow { display: inline-block; background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.25); padding: 4px 12px; border-radius: 999px; font-weight: 600; font-size: .92rem; margin-bottom: 14px; }
.hero h1 { color: #fff; font-size: clamp(2rem, 1.3rem + 3vw, 3rem); }
.hero p.lead { font-size: 1.15rem; color: rgba(255,255,255,.9); max-width: 640px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }

/* ---------- Sections & cards ---------- */
.section { padding: 44px 0; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 12px; flex-wrap: wrap; margin-bottom: 18px; }
.section-head h2 { margin: 0; }
.section-head p { margin: 4px 0 0; color: var(--ink-3); }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-3 { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; box-shadow: var(--shadow);
}
a.card { display: block; text-decoration: none; color: inherit; transition: transform .15s ease, border-color .15s ease; }
a.card:hover { transform: translateY(-2px); border-color: var(--brand-text); }
.card h3 { margin: 6px 0 6px; font-size: 1.2rem; }
.card p { color: var(--ink-2); margin: 0; }
.card .more { display: inline-block; margin-top: 12px; font-weight: 700; color: var(--brand-text); }
.tag { display: inline-block; font-size: .8rem; font-weight: 700; letter-spacing: .02em; padding: 2px 10px; border-radius: 999px; background: var(--brand-soft); color: var(--brand-text); }
.tag-live { background: var(--ok-soft); color: var(--ok); }
.tag-new { background: var(--accent-soft); color: var(--accent-text); }
.tag-soon { background: var(--surface-2); color: var(--ink-3); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 999px; background: var(--surface); border: 1px dashed var(--line); color: var(--ink-3); font-weight: 600; font-size: .95rem; }
.update-card { border-left: 4px solid var(--accent); }
.update-card .date { color: var(--ink-3); font-size: .9rem; font-weight: 600; }
.feature { display: flex; gap: 14px; align-items: flex-start; }
.feature .ico { flex-shrink: 0; width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; background: var(--brand-soft); color: var(--brand-text); }
.feature h3 { margin: 0 0 4px; }
.band { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.split { display: grid; grid-template-columns: 1.1fr 1fr; gap: 28px; align-items: center; }
@media (max-width: 820px) { .split { grid-template-columns: 1fr; } }

/* ---------- Article layout ---------- */
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 36px; padding-top: 8px; padding-bottom: 56px; align-items: start; }
@media (max-width: 980px) { .layout { grid-template-columns: minmax(0, 1fr); } }
.prose { max-width: 760px; min-width: 0; }
.prose > * { max-width: 100%; }
.art-head { margin: 10px 0 22px; }
.art-head .lead { font-size: 1.12rem; color: var(--ink-2); }
.meta { color: var(--ink-3); font-size: .92rem; margin: 10px 0 0; }
.prose ul, .prose ol { padding-left: 1.3em; margin: 0 0 1.1em; }
.prose li { margin: .3em 0; }
.sidebar { display: grid; gap: 16px; }
.side-h { font-size: 1.1rem; margin: 0 0 10px; }
.related ul { list-style: none; padding: 0; margin: 0; }
.related li { border-top: 1px solid var(--line); }
.related li:first-child { border-top: 0; }
.related a { display: block; padding: 9px 0; font-weight: 600; text-decoration: none; }
.related a:hover { text-decoration: underline; }

.callout { border-radius: var(--radius-sm); padding: 14px 16px; margin: 0 0 1.2em; border: 1px solid var(--line); background: var(--surface-2); }
.callout p { margin: 0; }
.callout-info { background: var(--brand-soft); border-color: transparent; }
.callout-warn { background: var(--accent-soft); border-color: transparent; }
.callout-ok { background: var(--ok-soft); border-color: transparent; }
.callout strong:first-child { display: block; margin-bottom: 2px; }
.keyfacts { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin: 0 0 1.4em; }
.keyfact { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px 14px; }
.keyfact .k { font-size: .85rem; color: var(--ink-3); font-weight: 600; }
.keyfact .v { font-size: 1.35rem; font-weight: 800; color: var(--ink); line-height: 1.2; }
.keyfact .s { font-size: .85rem; color: var(--ink-3); }

/* Tables */
.table-wrap { overflow-x: auto; margin: 0 0 1.4em; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface); -webkit-overflow-scrolling: touch; }
table { border-collapse: collapse; width: 100%; font-size: .98rem; }
th, td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th { background: var(--surface-2); font-weight: 700; white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
tfoot td { font-weight: 800; background: var(--surface-2); border-bottom: 0; }
caption { caption-side: top; text-align: left; font-weight: 700; padding: 10px 14px 0; }

/* Steps */
.steps { counter-reset: s; list-style: none; padding: 0 !important; }
.steps li { counter-increment: s; position: relative; padding-left: 46px; margin: 0 0 14px !important; }
.steps li::before {
  content: counter(s); position: absolute; left: 0; top: 0; width: 32px; height: 32px; border-radius: 50%;
  background: var(--btn); color: var(--btn-ink); font-weight: 800; display: grid; place-items: center; font-size: .95rem;
}

/* FAQ */
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 700; padding: 14px 16px; list-style: none; position: relative; padding-right: 44px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 16px; top: 10px; font-size: 1.5rem; color: var(--ink-3); font-weight: 400; }
.faq details[open] summary::after { content: "−"; }
.faq details > div { padding: 0 16px 14px; color: var(--ink-2); }
.faq details > div p:last-child { margin-bottom: 0; }

.sources { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 16px 18px; margin: 28px 0 0; }
.sources-h { font-size: 1.05rem; margin: 0 0 8px; }
.sources ul { margin: 0 0 8px; padding-left: 1.2em; }
.sources p { margin: 0; }

/* YouTube card */
.yt-card .yt-top { display: flex; gap: 12px; align-items: center; margin-bottom: 8px; }
.yt-icon { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: var(--yt); color: #fff; flex-shrink: 0; }
.yt-title { font-weight: 800; margin: 0; line-height: 1.3; }
.yt-handle { margin: 0; color: var(--ink-3); font-size: .9rem; }
.yt-card p { color: var(--ink-2); }
.yt-card .btn { width: 100%; margin-top: 4px; }

/* Forms */
.notify-form { display: grid; gap: 12px; grid-template-columns: 1fr 1fr auto; align-items: end; }
.notify-form .form-note { grid-column: 1 / -1; margin: 0; font-size: .88rem; color: var(--ink-3); }
.notify-form.compact { grid-template-columns: 1fr; }
.notify-form.compact .btn { width: 100%; }
@media (max-width: 720px) { .notify-form { grid-template-columns: 1fr; } .notify-form .btn { width: 100%; } }
.field { display: grid; gap: 4px; }
.field-label { font-weight: 600; font-size: .92rem; color: var(--ink-2); }
input[type="email"], input[type="text"], select, textarea {
  font: inherit; font-size: 1rem; width: 100%; padding: 10px 12px; min-height: 46px;
  border: 1.5px solid var(--line); border-radius: 10px; background: var(--surface); color: var(--ink);
}
textarea { min-height: 140px; resize: vertical; }
input:focus, select:focus, textarea:focus { border-color: var(--brand-text); outline: none; box-shadow: 0 0 0 3px var(--brand-soft); }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-card { max-width: 640px; }
.form-card form { display: grid; gap: 14px; }

/* ---------- Questions ---------- */
.formula-box { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; margin: 0 0 1.4em; }
.formula-box h2 { margin-top: 0; font-size: 1.25rem; }
.frac-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(118px, 1fr)); gap: 8px; margin: 0 0 1em; }
.frac-grid div { background: var(--surface-2); border-radius: 8px; padding: 6px 10px; font-weight: 600; font-variant-numeric: tabular-nums; }
.score-bar {
  position: sticky; top: 72px; z-index: 5; display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 10px 14px; margin: 0 0 16px; box-shadow: var(--shadow); font-weight: 600;
}
.score-bar .score-num { font-variant-numeric: tabular-nums; }
.score-bar .ok { color: var(--ok); }
.score-bar .bad { color: var(--bad); }
@media (max-width: 560px) { .score-bar { font-size: .92rem; gap: 4px 14px; padding: 8px 12px; top: 68px; } }
.score-bar button { margin-left: auto; font: inherit; font-size: .9rem; font-weight: 700; background: none; border: 1.5px solid var(--line); color: var(--ink-2); border-radius: 8px; padding: 4px 12px; cursor: pointer; }
.q { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 18px 8px; margin: 0 0 16px; }
.q-head { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; margin-bottom: 6px; }
.q-no { font-weight: 800; color: var(--brand-text); }
.q-src { font-size: .82rem; font-weight: 700; color: var(--ink-3); background: var(--surface-2); padding: 2px 10px; border-radius: 999px; }
.q-text { font-weight: 600; font-size: 1.05rem; }
.opts { list-style: none; padding: 0 !important; margin: 0 0 10px !important; display: grid; gap: 8px; grid-template-columns: 1fr 1fr; }
@media (max-width: 560px) { .opts { grid-template-columns: 1fr; } }
.opts li { margin: 0 !important; }
.opt {
  width: 100%; text-align: left; font: inherit; font-size: 1rem; cursor: pointer;
  display: flex; gap: 10px; align-items: center; min-height: 48px;
  background: var(--bg); color: var(--ink); border: 1.5px solid var(--line); border-radius: 10px; padding: 8px 12px;
}
.opt:hover:not([disabled]) { border-color: var(--brand-text); background: var(--brand-soft); }
.opt-l { flex-shrink: 0; width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; font-weight: 800; font-size: .9rem; background: var(--surface-2); color: var(--ink-2); }
.opt[disabled] { cursor: default; }
.opt.correct { border-color: var(--ok); background: var(--ok-soft); }
.opt.correct .opt-l { background: var(--ok); color: #fff; }
.opt.wrong { border-color: var(--bad); background: var(--bad-soft); }
.opt.wrong .opt-l { background: var(--bad); color: #fff; }
.sol { border-top: 1px dashed var(--line); margin: 0 -18px; padding: 0 18px; }
.sol summary { cursor: pointer; font-weight: 700; color: var(--brand-text); padding: 12px 0; }
.sol p { margin: 0 0 10px; }
.sol-ans { color: var(--ok); }
.sol-trick { background: var(--accent-soft); padding: 8px 12px; border-radius: 8px; }
.result-msg { font-weight: 700; padding: 6px 0 0; margin: 0; }
.result-msg.ok { color: var(--ok); }
.result-msg.bad { color: var(--bad); }

/* Papers list */
.paper-group { margin-bottom: 26px; }
.paper-row { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 12px 16px; border-top: 1px solid var(--line); }
.paper-row:first-of-type { border-top: 0; }
.paper-list { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); }

/* ---------- Footer ---------- */
.site-footer { background: var(--surface); border-top: 1px solid var(--line); margin-top: 20px; padding: 40px 0 20px; font-size: .96rem; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 28px; }
@media (max-width: 820px) { .footer-grid { grid-template-columns: 1fr 1fr; } .footer-brand { grid-column: 1 / -1; } }
.footer-brand p { color: var(--ink-2); margin: 10px 0 14px; max-width: 340px; }
.footer-h { font-size: 1rem; margin: 4px 0 10px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin: 6px 0; }
.site-footer li a { color: var(--ink-2); text-decoration: none; }
.site-footer li a:hover { color: var(--brand-text); text-decoration: underline; }
.footer-note { border-top: 1px solid var(--line); margin-top: 28px; padding-top: 16px; color: var(--ink-3); font-size: .88rem; }
.footer-note p { margin: 0 0 6px; }

/* Page hero for hubs */
.page-hero { padding: 16px 0 8px; }
.page-hero .lead { font-size: 1.12rem; color: var(--ink-2); max-width: 760px; }
.center { text-align: center; }
.stack > * + * { margin-top: 16px; }
.nf { padding: 70px 0; text-align: center; }
.nf .big { font-size: 4rem; font-weight: 800; color: var(--brand-text); line-height: 1; margin: 0 0 10px; }

[hidden] { display: none !important; }
.app-card { display: flex; gap: 20px; align-items: center; max-width: 640px; margin-bottom: 8px; }
.app-icon { border-radius: 22px; flex-shrink: 0; box-shadow: var(--shadow); }
@media (max-width: 480px) { .app-card { flex-direction: column; align-items: flex-start; } }

/* ---------- Game-style quiz ---------- */
@property --p { syntax: '<number>'; inherits: false; initial-value: 0; }
.quiz-start { display: flex; align-items: center; justify-content: space-between; gap: 14px 18px; flex-wrap: wrap; margin: 0 0 14px; background: linear-gradient(135deg, var(--brand-soft), var(--surface) 70%); }
.qs-title { font-weight: 800; font-size: 1.15rem; margin: 0 0 2px; }
[data-timer-btn].running { background: var(--ok); color: #fff; font-variant-numeric: tabular-nums; }
.score-bar { display: block; padding: 10px 14px 0; overflow: hidden; }
.sb-row { display: flex; align-items: center; gap: 6px 16px; flex-wrap: wrap; padding-bottom: 10px; }
.sb-stat { font-weight: 800; font-variant-numeric: tabular-nums; font-size: 1.05rem; }
.sb-att { margin-left: auto; font-weight: 700; color: var(--ink-2); }
.sb-streak { background: var(--accent-soft); color: var(--accent-text); border-radius: 999px; padding: 2px 10px; font-weight: 800; display: inline-block; }
.sb-clock { font-weight: 800; font-variant-numeric: tabular-nums; background: var(--surface-2); border-radius: 999px; padding: 2px 10px; }
.sb-clock.low { color: var(--bad); animation: pulse 1s infinite; }
.sb-clock.over { color: var(--bad); animation: none; }
.sb-progress { height: 6px; margin: 0 -14px; background: var(--surface-2); }
.sb-progress span { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--accent), var(--ok)); transition: width .45s ease; }
.bump { animation: bump .45s ease; }
@keyframes bump { 0% { transform: scale(1); } 40% { transform: scale(1.28); } 100% { transform: scale(1); } }
@keyframes pulse { 50% { opacity: .5; } }
.opt { transition: transform .12s ease, background-color .2s ease, border-color .2s ease; }
.opt:active:not([disabled]) { transform: scale(.98); }
.opt.correct { animation: pop .38s ease; }
.opt.correct.reveal { animation: none; }
.opt.wrong { animation: shake .42s ease; }
@keyframes pop { 0% { transform: scale(1); } 45% { transform: scale(1.045); } 100% { transform: scale(1); } }
@keyframes shake { 0%, 100% { transform: translateX(0); } 20% { transform: translateX(-7px); } 40% { transform: translateX(7px); } 60% { transform: translateX(-4px); } 80% { transform: translateX(4px); } }
.q.done { border-color: color-mix(in srgb, var(--line) 55%, var(--brand-text)); }
.burst { position: fixed; width: 0; height: 0; pointer-events: none; z-index: 60; }
.burst i { position: absolute; left: -4px; top: -6px; width: 8px; height: 12px; border-radius: 2px; opacity: 0; animation: confetti 1.05s cubic-bezier(.2, .7, .3, 1) forwards; }
.burst i.round { width: 9px; height: 9px; border-radius: 50%; }
@keyframes confetti { 0% { opacity: 1; transform: translate(0, 0) rotate(0); } 70% { opacity: 1; } 100% { opacity: 0; transform: translate(var(--dx), calc(var(--dy) + 46px)) rotate(var(--rot)); } }
.finish-row { display: flex; gap: 10px; flex-wrap: wrap; margin: 6px 0 18px; }
.result-card { text-align: center; padding: 28px 20px; margin: 0 0 24px; border: 2px solid var(--brand-text); animation: rise .45s ease; }
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.ring { --p: 0; width: 150px; height: 150px; border-radius: 50%; margin: 0 auto 14px; display: grid; place-items: center; position: relative;
  background: conic-gradient(var(--accent) calc(var(--p) * 1%), var(--surface-2) 0); transition: --p 1.1s ease-out; }
.ring.good { background: conic-gradient(var(--ok) calc(var(--p) * 1%), var(--surface-2) 0); }
.ring.low { background: conic-gradient(var(--bad) calc(var(--p) * 1%), var(--surface-2) 0); }
.ring::before { content: ""; position: absolute; inset: 14px; border-radius: 50%; background: var(--surface); }
.ring span { position: relative; font-size: 2.1rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.result-title { margin: 0 0 4px; font-size: 1.6rem; }
.result-sub { margin: 0 0 18px; }
.result-stats { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; margin: 0 0 20px; }
@media (max-width: 560px) { .result-stats { grid-template-columns: repeat(3, 1fr); } }
.result-stats > div { background: var(--surface-2); border-radius: 10px; padding: 10px 6px; }
.rs-num { display: block; font-size: 1.35rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.rs-num.ok { color: var(--ok); }
.rs-num.bad { color: var(--bad); }
.rs-label { font-size: .82rem; color: var(--ink-3); font-weight: 600; }
.result-actions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.btn-wa { background: #1c9c50; color: #fff; }
.btn-wa:hover { filter: brightness(1.07); }
@media (prefers-reduced-motion: reduce) {
  .opt.correct, .opt.wrong, .bump, .result-card, .sb-clock.low { animation: none !important; }
  .ring, .sb-progress span, .opt { transition: none; }
}

/* ---------- Mock test ---------- */
.opt.picked { border-color: var(--brand-text); background: var(--brand-soft); }
.opt.picked .opt-l { background: var(--brand); color: #fff; }
.mock-mode .q:not(.graded) .sol { display: none; }
.palette-card { margin: 0 0 16px; padding: 14px 16px; }
.palette-card .side-h { margin: 0 0 10px; }
.palette { display: grid; grid-template-columns: repeat(auto-fill, minmax(42px, 1fr)); gap: 6px; }
.palette button {
  font: inherit; font-weight: 700; font-variant-numeric: tabular-nums; min-height: 42px; cursor: pointer;
  border-radius: 8px; border: 1.5px solid var(--line); background: var(--bg); color: var(--ink-2);
}
.palette button:hover { border-color: var(--brand-text); }
.palette button.ans { background: var(--brand-soft); border-color: var(--brand-text); color: var(--brand-text); }
.palette button.ok { background: var(--ok-soft); border-color: var(--ok); color: var(--ok); }
.palette button.bad { background: var(--bad-soft); border-color: var(--bad); color: var(--bad); }
.palette button.skip { border-style: dashed; color: var(--ink-3); }
.palette-legend { display: flex; flex-wrap: wrap; gap: 4px 14px; margin: 10px 0 0; font-size: .85rem; color: var(--ink-3); }
.palette-legend i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 5px; vertical-align: -1px; border: 1.5px solid var(--line); background: var(--bg); }
.palette-legend i.ans { background: var(--brand-soft); border-color: var(--brand-text); }
.palette-legend i.ok { background: var(--ok-soft); border-color: var(--ok); }
.palette-legend i.bad { background: var(--bad-soft); border-color: var(--bad); }
.sec-h { margin: 1.4em 0 .6em; font-size: 1.1rem; color: var(--brand-text); }
.sec-score { max-width: 560px; margin: 0 auto 20px; text-align: left; }
.sec-score table { margin: 0; }
.rules { margin: 0 0 1.2em; padding-left: 1.2em; }
.rules li { margin: 0 0 .35em; }

/* Live exam chips on the home page */
a.chip { text-decoration: none; color: var(--brand-text); background: var(--surface); border-style: solid; border-color: var(--line); transition: border-color .15s ease; }
a.chip:hover { border-color: var(--brand-text); }