/* GATEverse — dark "console" aesthetic: navy/charcoal panels, gold for primary
   actions, teal for links & informational accents, purple reserved for the
   "marked for review" exam-palette state. */

:root {
  --ink: #e7ecf3;
  --ink-2: #aab8cc;
  --ink-3: #8695b0;
  --paper: #111a2e;
  --wash: #0a0f1c;
  --wash-2: #16233d;
  --rule: #243050;
  --signal: #4fd1c5;
  --signal-dark: #7ee4da;
  --accent: #e8a93b;
  --accent-dim: #7a5f24;
  --accent-ink: #1a1206;
  --right: #3fbf7f;
  --right-wash: #123424;
  --wrong: #f0555a;
  --wrong-wash: #3a1616;
  --mark: #e8a93b;
  --mark-wash: #3a2c0d;
  --purple: #a78bfa;
  --purple-wash: #241b42;
  --bronze: #c97f1f;
  --tag-easy-border: #1f6b46;
  --tag-medium-border: #2c4f66;
  --tag-medium-bg: #17283a;
  --tag-hard-border: #6b5220;
  --danger-border: #6b2a2c;
  --focus-ring: rgba(79, 209, 197, .25);
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(0, 0, 0, .45), 0 12px 30px -16px rgba(0, 0, 0, .7);
  --display: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  --body: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* per-subject accent, in subject order_idx — landing page subject grid */
  --s1: #e8a93b; --s1-wash: #3a2c0d;
  --s2: #4fd1c5; --s2-wash: #0f2b29;
  --s3: #a78bfa; --s3-wash: #241b42;
  --s4: #3fbf7f; --s4-wash: #123424;
  --s5: #e08a68; --s5-wash: #3a2117;
  --s6: #6fa8dc; --s6-wash: #16283d;
  --s7: #d4b358; --s7-wash: #332a10;
  --s8: #8b95e8; --s8-wash: #221e40;
  --s9: #4fc9c9; --s9-wash: #0e2d2d;
  --s10: #dd8ab8; --s10-wash: #341f2c;
  --s11: #a3b876; --s11-wash: #252c14;
}

:root[data-theme="light"] {
  --ink: #16202f;
  --ink-2: #4b5872;
  --ink-3: #66728a;
  --paper: #ffffff;
  --wash: #f3f5fa;
  --wash-2: #eaeef6;
  --rule: #dbe1ee;
  --signal: #0c8078;
  --signal-dark: #0b7b73;
  --accent: #9c6608;
  --accent-dim: #f3ddac;
  --accent-ink: #1a1206;
  --right: #158250;
  --right-wash: #e6f6ee;
  --wrong: #c93f44;
  --wrong-wash: #fbe9ea;
  --mark: #9c6608;
  --mark-wash: #fbedd3;
  --purple: #7c5cd6;
  --purple-wash: #ece6fa;
  --bronze: #9c5a1f;
  --tag-easy-border: #b9dfc9;
  --tag-medium-border: #bfe3e0;
  --tag-medium-bg: #e6f7f6;
  --tag-hard-border: #f0dcab;
  --danger-border: #f0c3c4;
  --focus-ring: rgba(12, 128, 120, .16);
  --shadow: 0 1px 2px rgba(20, 30, 50, .06), 0 12px 30px -18px rgba(20, 30, 50, .25);

  --s1: #9c6608; --s1-wash: #fbedd3;
  --s2: #0c8078; --s2-wash: #e3f4f2;
  --s3: #7c5cd6; --s3-wash: #ece6fa;
  --s4: #158250; --s4-wash: #e6f6ee;
  --s5: #b5502e; --s5-wash: #f9e6df;
  --s6: #2f6fb0; --s6-wash: #e4eef8;
  --s7: #a3852a; --s7-wash: #f6efd9;
  --s8: #5c6bc0; --s8-wash: #e8eaf9;
  --s9: #1f8a8a; --s9-wash: #dff2f2;
  --s10: #a1467a; --s10-wash: #f7e3ee;
  --s11: #6b7d3d; --s11-wash: #eef2e0;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--wash);
  color: var(--ink);
  font: 400 16px/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent-dim); color: #fff; }

body,
.topbar, .card, .qcard, .stat, .exam-bar, .palette, .table-wrap,
.input, .select, .textarea, .tag, .notice, .hero, .specimen, .opt, .btn, .navlink, .pbtn {
  transition: background-color .15s ease, border-color .15s ease, color .15s ease;
}

a { color: var(--signal); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { font-family: var(--display); line-height: 1.15; margin: 0; letter-spacing: -.015em; }
h1 { font-size: clamp(1.9rem, 4vw, 2.6rem); font-weight: 700; }
h2 { font-size: 1.4rem; font-weight: 600; }
h3 { font-size: 1.08rem; font-weight: 600; }

p { margin: 0 0 .9em; }

:focus-visible { outline: 2px solid var(--signal); outline-offset: 2px; }

/* ---------------------------------------------------------------- shell */
.topbar {
  background: var(--paper);
  background-image: linear-gradient(180deg, color-mix(in srgb, var(--paper) 92%, #000), var(--paper));
  border-bottom: 1px solid var(--rule);
  position: sticky; top: 0; z-index: 40;
}
.topbar-row-top {
  max-width: 1080px; margin: 0 auto; padding: 12px 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 44px;
}
.topbar-row-nav {
  max-width: 1080px; margin: 0 auto; padding: 0 20px 12px;
  border-top: 1px solid var(--rule);
}
.topbar-row-nav .navlinks { padding-top: 10px; }
.quote-strip {
  background: var(--wash-2); border-bottom: 1px solid var(--rule);
  padding: 9px 20px; text-align: center;
  font-family: var(--display); font-style: italic; font-size: .86rem;
  color: var(--ink-2); letter-spacing: -.005em;
}
/* one lands each day alongside the day's quote -- reuses the app's existing
   accent tokens (the --wrong red is skipped here, it reads as an error
   state everywhere else in the app, not a fit for motivational text) */
.quote-color-0 { color: var(--right); }
.quote-color-1 { color: var(--bronze); }
.quote-color-2 { color: #4f8ff0; }
.quote-color-3 { color: var(--purple); }
.quote-color-4 { color: var(--mark); }
.quote-color-5 { color: var(--signal); }
.wordmark {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--ink); white-space: nowrap;
}
.wordmark::before {
  content: "G"; width: 34px; height: 34px; border-radius: 9px; flex: none;
  background: conic-gradient(from 220deg, var(--accent), #c97f1f, var(--accent));
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--display); font-weight: 700; font-size: 15px; color: var(--accent-ink);
}
.wordmark:hover { text-decoration: none; }
.wordmark-text { display: flex; flex-direction: column; line-height: 1.25; }
.wordmark-title {
  font-family: var(--display); font-weight: 700; font-size: 1.12rem; letter-spacing: -.02em;
}
.wordmark-title span { color: var(--accent); }
.wordmark-tagline { font-family: var(--body); font-weight: 400; font-size: .72rem; color: var(--ink-3); }
.navlinks { display: flex; gap: 8px; overflow-x: auto; flex: 1; scrollbar-width: none; }
.navlinks::-webkit-scrollbar { display: none; }
.navlink {
  padding: 8px 16px; border-radius: 100px; color: var(--ink-2);
  font-size: .89rem; font-weight: 500; white-space: nowrap; border: 1px solid var(--rule);
  background: var(--wash-2);
}
.navlink:hover { background: var(--wash-2); text-decoration: none; color: var(--ink); border-color: var(--signal); }
.navlink.is-active { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
.navlink-icon { display: inline-flex; margin-right: 6px; vertical-align: -3px; }
.navlink-icon svg { width: 15px; height: 15px; }
.navlink.is-active .navlink-icon { color: inherit !important; }
.navuser {
  display: flex; align-items: center; justify-content: flex-end; gap: 10px;
  font-size: .88rem; color: var(--ink-3);
  flex: 1 1 auto; min-width: 0; overflow-x: auto; scrollbar-width: none;
}
.navuser::-webkit-scrollbar { display: none; }
.navuser-name { white-space: nowrap; }

/* Mobile navigation is deliberately separate from the desktop nav. It is
   only enabled on phone widths, where a second permanent header row wastes
   too much of the question viewport. */
.mobile-menu-toggle, .mobile-nav-drawer, .mobile-nav-scrim, .mock-palette-toggle, .mobile-palette-head { display: none; }

.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center; flex: none;
  width: 32px; height: 32px; border-radius: 50%;
  border: 1px solid var(--rule); background: var(--wash-2); color: var(--ink-2);
  cursor: pointer;
}
.theme-toggle:hover { color: var(--ink); border-color: var(--signal); }
.theme-toggle svg { width: 17px; height: 17px; }
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

.fullscreen-toggle {
  display: inline-flex; align-items: center; justify-content: center; flex: none;
  width: 32px; height: 32px; border-radius: 50%;
  border: 1px solid var(--rule); background: var(--wash-2); color: var(--ink-2);
  cursor: pointer;
}
.fullscreen-toggle:hover { color: var(--ink); border-color: var(--signal); }
.fullscreen-toggle svg { width: 16px; height: 16px; }

.page { max-width: 1080px; margin: 0 auto; padding: 30px 20px 72px; }
.page-head { margin-bottom: 22px; }
.page-head .eyebrow { margin-bottom: 6px; }
.lede { color: var(--ink-2); max-width: 62ch; }

.eyebrow {
  font-family: var(--mono); font-size: .7rem; letter-spacing: .14em;
  text-transform: uppercase; color: var(--accent); font-weight: 600;
}

/* ---------------------------------------------------------------- blocks */
.card {
  background: var(--paper); border: 1px solid var(--rule);
  border-radius: var(--radius); padding: 18px 20px;
}
.card + .card { margin-top: 14px; }
.card.is-active { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.card-link { display: block; color: inherit; }
.card-link:hover { text-decoration: none; border-color: var(--accent-dim); box-shadow: var(--shadow); transform: translateY(-1px); }
button.card-link {
  appearance: none; -webkit-appearance: none; -moz-appearance: none;
  font: inherit; text-align: left; cursor: pointer; width: 100%; margin: 0;
}
.grid { display: grid; gap: 14px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.row-between { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; }
.stack { display: grid; gap: 14px; }
/* Grid/flex items default to min-width:auto, which sizes them to fit their
   widest unbreakable descendant (a wide table, a long code line) even past
   the container's own width -- the classic cause of a page that's fine on
   desktop but forces horizontal scroll on a phone. Zeroing it out here lets
   .table-wrap's own overflow-x:auto actually do its job instead of the
   overflow leaking out to the whole page. */
.grid > *, .stack > * { min-width: 0; }

.stat { background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius); padding: 14px 16px; }
.stat-value { font-family: var(--display); font-size: 1.7rem; font-weight: 700; letter-spacing: -.02em; }
.stat-label { font-size: .8rem; color: var(--ink-3); margin-top: 4px; text-transform: uppercase; letter-spacing: .05em; }

.stat-icon {
  width: 32px; height: 32px; border-radius: 9px; margin-bottom: 10px;
  display: flex; align-items: center; justify-content: center; flex: none;
}
.stat-icon svg { width: 17px; height: 17px; }
.stat-icon-right   { background: var(--right-wash); color: var(--right); }
.stat-icon-signal  { background: var(--tag-medium-bg); color: var(--signal); }
.stat-icon-gold    { background: var(--mark-wash); color: var(--mark); }
.stat-icon-purple  { background: var(--purple-wash); color: var(--purple); }
.stat-icon-blue    { background: color-mix(in srgb, #4f8ff0 18%, var(--wash-2)); color: #4f8ff0; }
.stat-icon-pink    { background: color-mix(in srgb, #e85d9c 18%, var(--wash-2)); color: #e85d9c; }
.stat-icon-wrong   { background: var(--wrong-wash); color: var(--wrong); }

.badge-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.badge {
  border: 1px solid var(--rule); border-radius: var(--radius); padding: 16px 12px 14px;
  text-align: center; background: var(--paper); transition: transform .15s ease, box-shadow .15s ease;
}
.badge.is-earned:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.badge-icon-wrap {
  width: 52px; height: 52px; margin: 0 auto 10px; border-radius: 15px; position: relative;
  display: flex; align-items: center; justify-content: center; font-size: 1.5rem;
}
/* Earned: same conic-gradient chip language as .subject-icon-N (the wordmark
   logo's own treatment) -- a badge should feel like a little trophy, not a
   flat glyph. Locked: an outlined, desaturated slot showing what's missing,
   not a mystery -- the requirement text underneath already says exactly
   what to do, so hiding the icon behind a padlock would just be coy. */
.badge.is-earned .badge-icon-wrap { box-shadow: 0 6px 16px -6px var(--badge-shadow, transparent); }
.badge.is-locked .badge-icon-wrap { background: var(--wash-2); border: 1.5px dashed var(--rule); filter: grayscale(1); opacity: .5; }
.badge-color-0 { --badge-shadow: var(--right); background: conic-gradient(from 220deg, var(--right), #1f6b46, var(--right)); }
.badge-color-1 { --badge-shadow: var(--wrong); background: conic-gradient(from 220deg, var(--wrong), var(--mark), var(--wrong)); }
.badge-color-2 { --badge-shadow: #4f8ff0; background: conic-gradient(from 220deg, #4f8ff0, #2f5fb0, #4f8ff0); }
.badge-color-3 { --badge-shadow: var(--purple); background: conic-gradient(from 220deg, var(--purple), #7c5cd6, var(--purple)); }
.badge-color-4 { --badge-shadow: var(--mark); background: conic-gradient(from 220deg, var(--mark), #c97f1f, var(--mark)); }
.badge-color-5 { --badge-shadow: var(--signal); background: conic-gradient(from 220deg, var(--signal), #2f8f86, var(--signal)); }
.badge-check {
  position: absolute; bottom: -3px; right: -3px; width: 18px; height: 18px; border-radius: 50%;
  background: var(--right); color: #06210f; border: 2px solid var(--paper);
  display: flex; align-items: center; justify-content: center; font-size: .62rem; font-weight: 700;
}
.badge-name { font-weight: 700; font-size: .85rem; }
.badge-desc { font-size: .72rem; color: var(--ink-3); margin-top: 2px; }
.badge.is-locked .badge-name { color: var(--ink-3); }

/* ------------------------------------------------------- exam readiness */
.readiness-card {
  display: flex; align-items: center; gap: 20px; background: var(--paper);
  border: 1px solid var(--rule); border-radius: var(--radius); padding: 18px 20px; margin-bottom: 18px;
}
.readiness-ring {
  --pct: 0; width: 84px; height: 84px; border-radius: 50%; flex: none; position: relative;
  background: conic-gradient(var(--signal) calc(var(--pct) * 1%), var(--wash-2) 0);
  display: flex; align-items: center; justify-content: center;
}
.readiness-ring::before { content: ""; position: absolute; inset: 8px; border-radius: 50%; background: var(--paper); }
.readiness-pct { position: relative; font-family: var(--display); font-weight: 700; font-size: 1.15rem; }

/* ------------------------------------------------------------ daily goal */
.goal-row { margin-top: 16px; gap: 16px; flex-wrap: wrap; }
.goal-line { display: flex; align-items: center; gap: 10px; flex: 1; min-width: 220px; }
.goal-label { font-size: .8rem; color: var(--ink-3); white-space: nowrap; }
.goal-bar { flex: 1; }
.goal-edit { align-items: center; gap: 8px; }
.input-small { width: 68px; padding: 6px 8px; }

/* ------------------------------------------------------- activity heatmap */
.heatmap-wrap { background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius); padding: 16px 18px; overflow-x: auto; }
.heatmap { display: inline-flex; gap: 3px; }
.heatmap-col { display: flex; flex-direction: column; gap: 3px; }
.heatmap-day { width: 11px; height: 11px; border-radius: 3px; background: var(--wash-2); }
.heatmap-day[data-level="1"] { background: color-mix(in srgb, var(--right) 30%, var(--wash-2)); }
.heatmap-day[data-level="2"] { background: color-mix(in srgb, var(--right) 55%, var(--wash-2)); }
.heatmap-day[data-level="3"] { background: color-mix(in srgb, var(--right) 78%, var(--wash-2)); }
.heatmap-day[data-level="4"] { background: var(--right); }
.heatmap-day[data-future="true"] { background: transparent; }
.heatmap-legend { display: flex; align-items: center; gap: 4px; margin-top: 10px; }
.heatmap-legend .heatmap-day { width: 10px; height: 10px; }

/* -------------------------------------------------- avatar-color unlocks */
.avatar-picker { display: flex; align-items: center; gap: 12px; margin-top: 14px; }
.avatar-swatch {
  width: 30px; height: 30px; border-radius: 50%; border: 2px solid transparent;
  cursor: pointer; padding: 0; transition: transform .12s ease;
}
.avatar-swatch:hover { transform: scale(1.08); }
.avatar-swatch.is-selected { border-color: var(--ink); box-shadow: 0 0 0 2px var(--paper), 0 0 0 4px var(--ink); }
span.avatar-swatch.is-locked {
  display: flex; align-items: center; justify-content: center; cursor: default;
  background: var(--wash-2); border: 1.5px dashed var(--rule); font-size: .8rem; opacity: .6;
}

/* colorful per-subject badges, same conic-gradient treatment as the wordmark logo */
.subject-icon {
  width: 44px; height: 44px; border-radius: 12px; flex: none;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--display); font-weight: 700; font-size: .8rem;
  color: #fff; letter-spacing: -.01em;
}
.subject-icon-0 { background: conic-gradient(from 220deg, var(--accent), #c97f1f, var(--accent)); }
.subject-icon-1 { background: conic-gradient(from 220deg, var(--signal), #2f8f86, var(--signal)); }
.subject-icon-2 { background: conic-gradient(from 220deg, var(--purple), #7c5cd6, var(--purple)); }
.subject-icon-3 { background: conic-gradient(from 220deg, var(--right), #1f6b46, var(--right)); }
.subject-icon-4 { background: conic-gradient(from 220deg, #4f8ff0, #2f5fb0, #4f8ff0); }
.subject-icon-5 { background: conic-gradient(from 220deg, #f0955a, #c96a2f, #f0955a); }
.subject-icon-6 { background: conic-gradient(from 220deg, #e85d9c, #b83c78, #e85d9c); }
.subject-icon-7 { background: conic-gradient(from 220deg, var(--wrong), #a83a3e, var(--wrong)); }

/* Practice and dashboard subject cards */
.subject-practice-card {
  --subject-color: var(--accent);
  position: relative; display: flex; flex-direction: column; min-height: 310px;
  margin-top: 0 !important; padding: 20px; overflow: hidden;
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease, background .18s ease;
}
.subject-practice-card::before {
  content: ""; position: absolute; inset: 0 0 auto; height: 3px;
  background: var(--subject-color); opacity: 0; transition: opacity .18s ease;
}
.subject-practice-card:hover {
  border-color: color-mix(in srgb, var(--subject-color) 48%, var(--rule));
  background: color-mix(in srgb, var(--paper) 96%, var(--subject-color));
  box-shadow: 0 16px 36px -25px color-mix(in srgb, var(--subject-color) 70%, transparent);
  transform: translateY(-3px);
}
.subject-practice-card:hover::before { opacity: 1; }
.subject-practice-card:focus-visible { outline: 2px solid var(--subject-color); outline-offset: 3px; }
.subject-practice-card-0 { --subject-color: var(--accent); }
.subject-practice-card-1 { --subject-color: var(--signal); }
.subject-practice-card-2 { --subject-color: var(--purple); }
.subject-practice-card-3 { --subject-color: var(--right); }
.subject-practice-card-4 { --subject-color: #4f8ff0; }
.subject-practice-card-5 { --subject-color: #f0955a; }
.subject-practice-card-6 { --subject-color: #e85d9c; }
.subject-practice-card-7 { --subject-color: var(--wrong); }
.subject-practice-head { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.subject-question-count {
  padding: 6px 9px; border-radius: 999px; color: var(--ink-3); background: var(--wash-2);
  font: 650 .66rem/1 var(--mono); white-space: nowrap;
}
.subject-practice-copy { min-height: 100px; padding-top: 15px; }
.subject-practice-copy h3 { margin: 0; font-size: 1.02rem; line-height: 1.22; }
.subject-practice-copy p {
  display: -webkit-box; margin: 7px 0 0; overflow: hidden; color: var(--ink-2);
  font-size: .86rem; line-height: 1.55; -webkit-box-orient: vertical; -webkit-line-clamp: 2;
}
.subject-progress-block { margin-top: auto; padding-top: 14px; }
.subject-progress-label {
  display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px;
  color: var(--ink-3); font: 650 .66rem/1 var(--mono); text-transform: uppercase; letter-spacing: .06em;
}
.subject-progress-label strong { color: var(--ink); font-size: .72rem; }
.subject-progress-track { position: relative; height: 7px; overflow: hidden; border-radius: 99px; background: var(--wash-2); }
.subject-progress-track i {
  display: block; min-width: 0; height: 100%; border-radius: inherit; background: var(--subject-color);
  box-shadow: 0 0 12px color-mix(in srgb, var(--subject-color) 36%, transparent); transition: width .35s ease;
}
.subject-progress-track.is-empty::before {
  content: ""; position: absolute; left: 0; top: 0; width: 7px; height: 7px;
  border-radius: 50%; background: var(--subject-color); opacity: .65;
}
.subject-progress-stats {
  display: flex; flex-wrap: wrap; gap: 5px 12px; margin-top: 10px;
  color: var(--ink-3); font: 600 .66rem/1.35 var(--mono);
}
.subject-progress-stats span { white-space: nowrap; }
.subject-progress-stats strong { color: var(--ink-2); }
.subject-practice-action {
  display: flex; align-items: center; justify-content: space-between; margin-top: 15px; padding-top: 13px;
  border-top: 1px solid var(--rule); color: var(--subject-color); font-size: .78rem; font-weight: 700;
}
.subject-practice-action b { font-size: 1rem; transition: transform .18s ease; }
.subject-practice-card:hover .subject-practice-action b { transform: translateX(3px); }
.topic-practice-row {
  margin-top: 0 !important; color: inherit;
  transition: transform .16s ease, border-color .16s ease, background .16s ease, box-shadow .16s ease;
}
.topic-practice-row:not(.is-disabled) { cursor: pointer; }
.topic-practice-row:not(.is-disabled):hover {
  border-color: color-mix(in srgb, var(--accent) 42%, var(--rule));
  background: color-mix(in srgb, var(--paper) 96%, var(--accent));
  box-shadow: 0 12px 30px -24px color-mix(in srgb, var(--accent) 70%, transparent);
  transform: translateY(-2px);
}
.topic-practice-row:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.topic-practice-action { pointer-events: none; }
.topic-practice-action b { margin-left: 3px; transition: transform .16s ease; }
.topic-practice-row:hover .topic-practice-action {
  color: var(--paper); border-color: var(--accent); background: var(--accent);
}
.topic-practice-row:hover .topic-practice-action b { display: inline-block; transform: translateX(3px); }
@media (max-width: 560px) {
  .subject-practice-card { min-height: 280px; }
  .subject-practice-copy { min-height: auto; }
}

/* gradient CTA card -- uses the app's own accent/signal colors, not an imported palette */
.hero-cta {
  border-radius: var(--radius); padding: 26px 28px; color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--signal-dark));
  position: relative; overflow: hidden;
}
.hero-cta .eyebrow { color: rgba(255,255,255,.85); }
.hero-cta h2 { font-family: var(--display); font-size: 1.4rem; margin: 8px 0 10px; color: #fff; }
.hero-cta p { opacity: .92; max-width: 48ch; margin-bottom: 18px; }
/* text left, action right -- the CTA no longer sits below the paragraph */
.hero-cta .row-between > div > p:last-child { margin-bottom: 0; }
.hero-cta .row-between .btn-primary { flex: none; }
.hero-cta .btn-primary { background: #fff; color: var(--accent-ink); }
.hero-cta .btn-primary:hover { background: #fff; opacity: .92; }
/* same shell, different gradient -- keeps Review Queue visually distinct from Question of the Day */
.hero-cta-purple { background: linear-gradient(135deg, var(--purple), var(--wrong)); }
.hero-cta-purple .btn-primary { color: var(--purple); }
/* the weak-area/get-started nudge -- a third gradient in the same family, warm red-to-gold to read as "needs attention" */
.hero-cta-warn { background: linear-gradient(135deg, var(--wrong), var(--mark)); }
.hero-cta-warn .btn-primary { color: var(--wrong); }
/* a shorter shell for a one-line nudge -- text left, action right, instead
   of the taller eyebrow/heading/paragraph stack QOTD and Review Queue use */
.hero-cta-compact { padding: 16px 20px; }
.hero-cta-compact .eyebrow { margin-bottom: 4px; }
.hero-cta-compact .hero-cta-line { margin: 0; opacity: .92; max-width: 56ch; }
.hero-cta-compact .btn-primary { flex: none; }

/* leaderboard -- a dark "trophy shelf" panel using the app's own navy/gold
   tokens (--wash/--mark already read this way in the dark theme) rather
   than an imported look */
.lb-hero {
  background: linear-gradient(165deg, var(--wash-2), var(--paper));
  border: 1px solid var(--rule); border-radius: var(--radius);
  padding: 22px 20px; margin-bottom: 20px;
}
.lb-hero .page-head { margin-bottom: 0; }
.seg-tabs { display: inline-flex; background: var(--wash-2); border: 1px solid var(--rule); border-radius: 100px; padding: 4px; gap: 2px; margin-top: 18px; }
.seg-tab { padding: 8px 18px; border-radius: 100px; font-size: .89rem; font-weight: 500; color: var(--ink-2); }
.seg-tab:hover { color: var(--ink); text-decoration: none; }
.seg-tab.is-active { font-weight: 600; box-shadow: 0 1px 4px rgba(0,0,0,.18); }
.group-strip {
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  margin: 14px 0 22px; padding: 12px 16px; background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius);
}
/* each period gets its own accent so the active pill's color tells you at a
   glance which board you're on -- reusing tokens already used elsewhere
   (teal=recent activity, gold=the default/monthly view, purple=all-time) */
.seg-tab.is-active[data-view="week"]    { background: var(--tag-medium-bg); color: var(--signal); }
.seg-tab.is-active[data-view="month"]   { background: var(--mark-wash); color: var(--mark); }
.seg-tab.is-active[data-view="overall"] { background: var(--purple-wash); color: var(--purple); }

.lb-avatar {
  width: 40px; height: 40px; border-radius: 50%; flex: none;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--display); font-weight: 700; font-size: .92rem; color: #06210f;
}
.lb-list { display: flex; flex-direction: column; gap: 8px; }
.lb-row { display: flex; align-items: center; gap: 12px; background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius); padding: 10px 14px; }
.lb-row.is-me { border-color: var(--signal); background: var(--wash-2); }
/* top 3 get a subtle medal-colored wash + left bar -- gold/silver/bronze,
   same podium colors the medal emoji already implies, just extended to the
   whole row instead of a single character. */
.lb-row.is-top1 { border-left: 3px solid #e8a93b; background: color-mix(in srgb, #e8a93b 8%, var(--paper)); }
.lb-row.is-top2 { border-left: 3px solid #b7c1d1; background: color-mix(in srgb, #b7c1d1 8%, var(--paper)); }
.lb-row.is-top3 { border-left: 3px solid #c97f1f; background: color-mix(in srgb, #c97f1f 8%, var(--paper)); }
.card.is-me { border-color: var(--signal); }

/* ------------------------------------------------------------- live duel */
.live-panel { max-width: 640px; margin: 0 auto; text-align: center; }
.live-players { display: flex; align-items: center; justify-content: center; gap: 24px; margin: 24px 0; }
.live-player {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius);
  padding: 16px 24px; min-width: 140px;
}
.live-player-name { font-family: var(--display); font-weight: 700; }
.live-player-status { font-family: var(--mono); font-size: .78rem; color: var(--ink-3); }
.live-vs { font-family: var(--display); font-weight: 700; color: var(--ink-3); }
.live-scorebar {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius); padding: 12px 20px;
}
.live-score-block { text-align: center; }
.live-score { font-family: var(--display); font-weight: 700; font-size: 1.3rem; }
.live-clock {
  font-family: var(--mono); font-size: 1.4rem; font-weight: 600; color: var(--signal);
  background: var(--wash-2); border: 1px solid var(--rule); border-radius: var(--radius-sm); padding: 4px 16px;
}
.live-clock.is-low { color: var(--wrong); }
#live-qcard { text-align: left; margin-top: 12px; }
.live-opp-flag { margin-top: 10px; color: var(--signal); }

.qm-spinner {
  width: 48px; height: 48px; margin: 20px auto; border-radius: 50%;
  border: 4px solid var(--rule); border-top-color: var(--signal);
  animation: qm-spin 0.8s linear infinite;
}
@media (prefers-reduced-motion: reduce) { .qm-spinner { animation: none; } }
@keyframes qm-spin { to { transform: rotate(360deg); } }
.lb-row-rank { width: 46px; flex: none; text-align: center; font-family: var(--mono); font-weight: 600; color: var(--ink-3); font-size: .88rem; }
.lb-row:nth-child(1) .lb-row-rank { color: var(--mark); }
.lb-row:nth-child(2) .lb-row-rank { color: var(--ink-2); }
.lb-row:nth-child(3) .lb-row-rank { color: var(--bronze); }
.lb-row-name { flex: 1; min-width: 0; font-weight: 500; display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.lb-row-solved, .lb-row-points {
  flex: none; display: inline-flex; align-items: center; gap: 5px;
  font-family: var(--mono); font-weight: 600; font-size: .84rem;
  padding: 5px 13px; border-radius: 100px; white-space: nowrap;
}
.lb-row-solved { background: var(--tag-medium-bg); color: var(--signal); }
.lb-row-solved svg { width: 13px; height: 13px; flex: none; }
.lb-row-points { background: var(--right-wash); color: var(--right); }

.tag {
  display: inline-block; font-family: var(--mono); font-size: .68rem;
  letter-spacing: .06em; text-transform: uppercase; white-space: nowrap;
  border: 1px solid var(--rule); border-radius: 100px; padding: 2px 9px; color: var(--ink-3);
  background: var(--wash-2);
}
.tag-easy { border-color: var(--tag-easy-border); background: var(--right-wash); color: var(--right); }
.tag-medium { border-color: var(--tag-medium-border); background: var(--tag-medium-bg); color: var(--signal); }
.tag-hard { border-color: var(--tag-hard-border); background: var(--mark-wash); color: var(--mark); }
.tag-year { border-color: var(--accent-dim); color: var(--accent); }
.tag-solved { border-color: var(--right); background: var(--right); color: #fff; font-weight: 600; }
.tag-lost { border-color: var(--danger-border); background: var(--wrong-wash); color: var(--wrong); }
.tag-waiting { border-color: var(--tag-medium-border); background: var(--tag-medium-bg); color: var(--signal); }
.bookmark-btn.is-bookmarked { border-color: var(--tag-medium-border); background: var(--tag-medium-bg); color: var(--signal); }
.note-btn.has-note { border-color: var(--accent-dim); background: var(--mark-wash); color: var(--mark); }
.note-panel { background: var(--wash-2); border: 1px solid var(--rule); border-radius: var(--radius-sm); padding: 12px; margin: 12px 0; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  font: 600 .93rem/1 var(--body); padding: 11px 18px; border-radius: var(--radius-sm);
  border: none; background: var(--accent); color: var(--accent-ink);
  cursor: pointer; text-decoration: none;
}
.btn:hover { text-decoration: none; background: color-mix(in srgb, var(--accent) 85%, #fff); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: color-mix(in srgb, var(--accent) 85%, #fff); }
.btn-quiet { background: var(--wash-2); color: var(--ink); border: 1px solid var(--rule); }
.btn-quiet:hover { border-color: var(--signal); background: var(--wash-2); }
.btn-small { padding: 7px 12px; font-size: .84rem; }
.btn-danger { background: transparent; color: var(--wrong); border: 1px solid var(--danger-border); }
.btn-danger:hover { background: var(--wrong-wash); }
.btn:disabled { opacity: .45; cursor: not-allowed; }

.notice { border-left: 3px solid var(--signal); background: var(--tag-medium-bg); padding: 12px 14px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; font-size: .92rem; }
.notice-warn { border-left-color: var(--mark); background: var(--mark-wash); }
.notice-bad { border-left-color: var(--wrong); background: var(--wrong-wash); }
.empty { text-align: center; padding: 44px 20px; color: var(--ink-2); background: var(--paper); border: 1px dashed var(--rule); border-radius: var(--radius); }

/* ---------------------------------------------------------------- forms */
.field { display: block; margin-bottom: 14px; }
.field-label { display: block; font-size: .78rem; font-weight: 600; margin-bottom: 6px; color: var(--ink-3); text-transform: uppercase; letter-spacing: .05em; }
.input, .select, .textarea {
  width: 100%; font: 400 .96rem/1.5 var(--body); color: var(--ink);
  background: var(--wash-2); border: 1px solid var(--rule);
  border-radius: var(--radius-sm); padding: 10px 12px;
}
.input:focus, .select:focus, .textarea:focus { border-color: var(--signal); outline: none; box-shadow: 0 0 0 3px var(--focus-ring); }
.textarea { min-height: 110px; resize: vertical; }
.hint { font-size: .8rem; color: var(--ink-3); margin-top: 4px; }
.mono { font-family: var(--mono); }
.form-narrow { max-width: 420px; }

/* ---------------------------------------------------------------- onboarding */
.onboarding-shell { max-width: 850px; margin: 18px auto 42px; }
.onboarding-intro {
  position: relative; overflow: hidden; padding: 34px 38px 28px; border: 1px solid var(--rule);
  border-radius: 20px 20px 4px 4px; background:
    radial-gradient(circle at 88% 0%, color-mix(in srgb, var(--signal) 25%, transparent), transparent 34%),
    linear-gradient(125deg, color-mix(in srgb, var(--paper) 88%, #08182a), var(--paper));
}
.onboarding-intro::after { content:""; position:absolute; right:-46px; bottom:-70px; width:220px; height:220px; border:1px solid color-mix(in srgb, var(--signal) 30%, transparent); border-radius:50%; box-shadow:0 0 0 30px color-mix(in srgb, var(--accent) 9%, transparent), 0 0 0 60px color-mix(in srgb, var(--signal) 6%, transparent); pointer-events:none; }
.onboarding-kicker { display:flex; align-items:center; gap:8px; color:var(--signal); font:600 .75rem var(--mono); text-transform:uppercase; letter-spacing:.12em; }
.onboarding-kicker span { width:8px; height:8px; border-radius:50%; background:var(--signal); box-shadow:0 0 0 5px color-mix(in srgb, var(--signal) 18%, transparent); }
.onboarding-intro h1 { margin:10px 0 7px; font-size:clamp(2.2rem, 5vw, 3.35rem); letter-spacing:-.045em; }
.onboarding-intro h1 em { color:var(--accent); font-style:normal; }
.onboarding-intro > p { max-width:590px; color:var(--ink-2); margin:0; font-size:1.02rem; }
.onboarding-progress { display:flex; gap:17px; flex-wrap:wrap; margin-top:24px; position:relative; z-index:1; }
.onboarding-progress span { display:flex; align-items:center; gap:7px; color:var(--ink-3); font-size:.79rem; font-weight:600; }
.onboarding-progress b { display:grid; place-items:center; width:21px; height:21px; border:1px solid var(--rule); border-radius:50%; font:500 .7rem var(--mono); }
.onboarding-progress .is-active { color:var(--ink); }.onboarding-progress .is-active b { color:var(--accent-ink); background:var(--accent); border-color:var(--accent); }
.onboarding-card { margin-top:0; padding:30px 38px 28px; border-radius:4px 4px 20px 20px; border-top:0; box-shadow:var(--shadow); }
.onboarding-field-head { display:grid; grid-template-columns:38px 1fr; gap:12px; margin:0 0 13px; align-items:start; }
.onboarding-field-head .field-label { display:block; font-size:1.03rem; }.onboarding-field-head .hint { display:block; margin-top:2px; line-height:1.45; }
.onboarding-step { display:grid; place-items:center; width:29px; height:29px; border-radius:8px; background:var(--wash-2); color:var(--signal); font:600 .68rem var(--mono); }
.onboarding-track-grid { display:grid; grid-template-columns:repeat(2, minmax(0, 1fr)); gap:10px; margin:0 0 27px; }
.onboarding-track-choice { min-height:90px; padding:14px; align-items:center; gap:11px; }.onboarding-track-choice .opt-key { width:38px; height:38px; display:grid; place-items:center; flex:none; }
.onboarding-track-choice strong, .onboarding-track-choice small { display:block; }.onboarding-track-choice small { color:var(--ink-3); font-size:.77rem; line-height:1.35; margin-top:2px; }
.onboarding-year-field { margin-bottom:27px; }.onboarding-select-wrap { grid-column:2; position:relative; display:block; max-width:240px; }.onboarding-select-wrap > span { position:absolute; left:13px; top:8px; color:var(--accent); font-size:1.15rem; pointer-events:none; }.onboarding-select-wrap .select { padding-left:38px; }
.onboarding-subject-grid { display:grid; grid-template-columns:repeat(3, minmax(0, 1fr)); gap:8px; }.onboarding-subject-choice { min-height:63px; padding:9px 10px; gap:8px; align-items:center; }.onboarding-subject-choice .opt-key { font-size:.67rem; padding:4px 6px; flex:none; }.onboarding-subject-choice > span:last-child { font-size:.8rem; line-height:1.25; padding-top:0; }
.onboarding-actions { margin-top:30px; padding-top:20px; border-top:1px solid var(--rule); display:flex; align-items:center; justify-content:space-between; gap:16px; }.onboarding-skip { color:var(--ink-3); font-size:.88rem; font-weight:600; }.onboarding-skip:hover { color:var(--signal); text-decoration:none; }.onboarding-continue { padding:12px 19px; box-shadow:0 11px 22px -15px var(--accent); }
@media (max-width: 640px) { .onboarding-shell { margin-top:4px; }.onboarding-intro { padding:26px 21px 23px; border-radius:15px 15px 3px 3px; }.onboarding-card { padding:24px 18px; border-radius:3px 3px 15px 15px; }.onboarding-progress { gap:10px; }.onboarding-progress span { font-size:.71rem; }.onboarding-track-grid, .onboarding-subject-grid { grid-template-columns:1fr; }.onboarding-actions { align-items:stretch; flex-direction:column-reverse; }.onboarding-continue { width:100%; }.onboarding-skip { text-align:center; padding:8px; } }
.feedback-page { max-width: 720px; margin: 0 auto; }
.feedback-callout {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  max-width: 520px; margin: 0 auto 16px; padding: 10px 22px;
  border-radius: 999px; border: 1px solid var(--rule);
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--purple) 14%, var(--paper)),
    color-mix(in srgb, var(--signal) 14%, var(--paper)));
  font-weight: 600; font-size: .9rem; color: var(--ink); text-align: center;
}
.feedback-callout .navlink-icon { color: var(--purple); margin-right: 0; }
.divider {
  display: flex; align-items: center; gap: 10px; font: 500 .72rem var(--mono);
  letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3);
}
.divider::before, .divider::after { content: ""; flex: 1; height: 1px; background: var(--rule); }

/* -------------------------------------------------------------- question */
.qcard { background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius); overflow: hidden; }
.qcard + .qcard { margin-top: 14px; }
.qcard-head {
  padding: 15px 20px; border-bottom: 1px solid var(--rule);
  background: linear-gradient(135deg, color-mix(in srgb, var(--paper) 90%, var(--accent)), var(--paper));
}
.qcard-head-main { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.qcard-meta { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 10px; }
.qcard-actions { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 3px; }
.qcard-action {
  padding: 6px 8px; border: 1px solid transparent; border-radius: 7px; background: transparent;
  color: var(--ink-3); font: 600 .76rem/1 var(--body); cursor: pointer;
}
.qcard-action:hover { color: var(--ink); background: var(--wash-2); }
.qcard-action.bookmark-btn.is-bookmarked { border-color: var(--tag-medium-border); background: var(--tag-medium-bg); color: var(--signal); }
.qcard-action.note-btn.has-note { border-color: var(--accent-dim); background: var(--mark-wash); color: var(--mark); }
.qcard-body { padding: 25px 24px 22px; }
.qnum { font-family: var(--mono); font-size: .76rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--signal); }
.qtext {
  max-width: 68ch; font-size: 1.13rem; line-height: 1.76; letter-spacing: .002em;
  margin-bottom: 24px; white-space: pre-wrap; color: var(--ink);
}
.qtext .katex-display, .opt .katex-display, .solution .katex-display { overflow-x: auto; overflow-y: hidden; padding: 6px 2px; }
.qmeta { font-family: var(--mono); font-size: .72rem; color: var(--ink-3); }
.tag-context { color: var(--ink-2); background: var(--wash-2); }

.q-diagram {
  display: flex; justify-content: center; align-items: center;
  background: var(--wash-2); border: 1px solid var(--rule); border-radius: var(--radius-sm);
  padding: 14px; margin-bottom: 14px; overflow-x: auto;
}
.q-diagram svg { max-width: 100%; height: auto; color: var(--ink); }
.q-diagram svg .qd-state { fill: var(--paper); stroke: var(--ink-2); stroke-width: 2; }
.q-diagram svg .qd-state-accept { fill: var(--paper); stroke: var(--signal); stroke-width: 2; }
.q-diagram svg .qd-edge { fill: none; stroke: var(--ink-2); stroke-width: 1.6; }
.q-diagram svg .qd-label { fill: var(--ink); font-family: var(--mono); font-size: 13px; }
.q-diagram svg .qd-statelabel { fill: var(--ink); font-family: var(--display); font-size: 14px; font-weight: 600; text-anchor: middle; dominant-baseline: central; }
.q-diagram svg .qd-innerring { fill: none; stroke: var(--signal); stroke-width: 2; }
.q-diagram svg .qd-start { fill: none; stroke: var(--ink-2); stroke-width: 1.6; }
.q-diagram-image img {
  display: block; max-width: 100%; max-height: 460px; width: auto; height: auto;
  object-fit: contain; background: #fff; border-radius: 6px; border: 1px solid var(--rule);
}
.q-diagram-expand {
  position: relative; width: fit-content; max-width: 100%; appearance: none; cursor: zoom-in;
  color: inherit; font: inherit; text-align: inherit;
}
.q-diagram-expand:hover { border-color: var(--accent-dim); }
.q-diagram-expand:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.q-diagram-expand-label {
  position: absolute; right: 22px; bottom: 22px; padding: 6px 8px; border-radius: 6px;
  color: #fff; background: color-mix(in srgb, #000 72%, transparent); opacity: 0;
  font: 650 .65rem/1 var(--mono); letter-spacing: .03em; transition: opacity .16s ease;
}
.q-diagram-expand:hover .q-diagram-expand-label,
.q-diagram-expand:focus-visible .q-diagram-expand-label { opacity: 1; }
.q-diagram-solution { margin-top: 10px; }
.image-lightbox {
  width: min(1120px, calc(100vw - 28px)); max-width: none; max-height: calc(100vh - 28px);
  padding: 16px; overflow: hidden; border: 1px solid var(--rule); border-radius: var(--radius);
  background: var(--paper); box-shadow: 0 24px 80px color-mix(in srgb, #000 60%, transparent);
}
.image-lightbox::backdrop { background: color-mix(in srgb, #000 70%, transparent); backdrop-filter: blur(3px); }
.image-lightbox-close {
  position: absolute; z-index: 1; top: 26px; right: 26px; width: 34px; height: 34px;
  border: 1px solid var(--rule); border-radius: 50%; background: var(--paper); color: var(--ink);
  font-size: 1.2rem; line-height: 1; cursor: pointer;
}
.image-lightbox img { display: block; max-width: 100%; max-height: calc(100vh - 60px); margin: 0 auto; object-fit: contain; }
@media (max-width: 560px) {
  .q-diagram { padding: 10px; }
  .q-diagram-image img { max-height: 320px; }
  .q-diagram-expand-label { opacity: 1; right: 17px; bottom: 17px; }
  .image-lightbox { width: calc(100vw - 16px); padding: 10px; }
  .image-lightbox-close { top: 18px; right: 18px; }
  .image-lightbox img { max-height: calc(100vh - 36px); }
}

.opts { display: grid; gap: 12px; max-width: 68ch; margin-bottom: 18px; }
.opt {
  display: flex; gap: 14px; align-items: flex-start; min-height: 56px;
  border: 1px solid var(--rule); border-radius: var(--radius-sm); font-size: 1rem;
  padding: 14px 16px; cursor: pointer; background: var(--wash-2);
  transition: border-color .15s ease, background-color .15s ease, transform .15s ease, box-shadow .15s ease;
}
.opt:hover { border-color: var(--signal); transform: translateY(-1px); }
.opt input { position: absolute; opacity: 0; pointer-events: none; }
.opt-key {
  display: grid; place-items: center; width: 30px; height: 30px; border: 1px solid var(--rule);
  border-radius: 50%; font-family: var(--mono); font-size: .76rem; font-weight: 600;
  flex: none; color: var(--ink-3); transition: background-color .15s ease, color .15s ease;
}
.opt > span:last-child { padding-top: 3px; line-height: 1.6; }
.opt:has(input:focus-visible) { outline: 2px solid var(--signal); outline-offset: 2px; }
.opt:has(input:checked) { border-color: var(--accent); background: var(--mark-wash); box-shadow: 0 0 0 2px var(--focus-ring); }
.opt:has(input:checked) .opt-key { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.opt-image { display: block; max-width: 220px; max-height: 150px; margin-top: 8px; border-radius: 6px; border: 1px solid var(--rule); background: #fff; }
.opt.is-right, .opt.is-right:has(input:checked) { border-color: var(--right); background: var(--right-wash); box-shadow: none; }
.opt.is-wrong, .opt.is-wrong:has(input:checked) { border-color: var(--wrong); background: var(--wrong-wash); box-shadow: none; }
.opt.is-right .opt-key { background: var(--right); border-color: var(--right); color: #06210f; }
.opt.is-wrong .opt-key { background: var(--wrong); border-color: var(--wrong); color: #fff; }
.opt.is-locked { cursor: default; }
.opt.is-locked:hover { transform: none; }

.natinput { max-width: 220px; font-family: var(--mono); }

.verdict { max-width: 820px; border-radius: var(--radius-sm); padding: 15px 16px; margin-top: 16px; font-size: .94rem; }
.verdict-correct { background: var(--right-wash); border: 1px solid var(--tag-easy-border); }
.verdict-wrong { background: var(--wrong-wash); border: 1px solid var(--danger-border); }
.verdict-head { font-weight: 700; font-family: var(--display); margin-bottom: 6px; display: flex; gap: 8px; align-items: baseline; }
.ledger { font-family: var(--mono); font-size: .78rem; color: var(--ink-2); }
.answer-comparison { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 10px; }
.answer-comparison > span { min-width: 120px; padding: 8px 10px; border-radius: 7px; background: color-mix(in srgb, var(--paper) 55%, transparent); }
.answer-comparison small { display: block; margin-bottom: 3px; color: var(--ink-3); font: 600 .62rem/1 var(--mono); text-transform: uppercase; }
.answer-comparison strong { font-family: var(--mono); }
.catch-points {
  background: var(--mark-wash); border-left: 3px solid var(--mark);
  padding: 12px 14px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: .88rem; color: var(--ink-2);
}
.solution { margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--rule); white-space: pre-wrap; }
.solution::before { content: "Solution"; display: block; margin-bottom: 6px; color: var(--ink-3); font: 700 .67rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.ai-out { margin-top: 10px; padding: 11px 13px; background: var(--wash-2); border-left: 2px solid var(--signal); border-radius: var(--radius-sm); font-size: .93rem; white-space: pre-wrap; }
.combo-flair { margin: 10px 2px 0; font-family: var(--display); font-weight: 700; font-size: .86rem; color: var(--mark); }

details.reveal { border: 1px solid var(--rule); border-radius: var(--radius); background: var(--paper); padding: 0; }
details.reveal > summary { cursor: pointer; padding: 14px 18px; font-weight: 600; list-style: none; }
details.reveal > summary::-webkit-details-marker { display: none; }
details.reveal > summary::before { content: "+ "; font-family: var(--mono); color: var(--signal); }
details.reveal[open] > summary::before { content: "\2212 "; }
details.reveal .reveal-body { padding: 0 18px 16px; }

/* ------------------------------------------------------------ exam shell */
.exam-bar { position: sticky; top: 0; z-index: 50; background: var(--paper); border-bottom: 1px solid var(--rule); }
.exam-bar-inner { max-width: 1080px; margin: 0 auto; padding: 12px 20px; display: flex; gap: 16px; align-items: center; justify-content: space-between; }
.exam-title { font-family: var(--display); font-weight: 600; font-size: 1rem; }
.clock { font-family: var(--mono); font-size: 1.5rem; font-weight: 600; letter-spacing: -.02em; background: var(--wash-2); border: 1px solid var(--rule); border-radius: var(--radius-sm); padding: 4px 12px; }
.clock.is-low { color: var(--wrong); border-color: var(--danger-border); }
.fuse { height: 3px; background: var(--wash-2); }
.fuse-fill { height: 100%; background: var(--signal); width: 100%; transition: width 1s linear; }
.fuse-fill.is-low { background: var(--wrong); }

.exam-layout { display: grid; grid-template-columns: minmax(0, 1fr) 244px; gap: 18px; align-items: start; }
/* .exam-bar/.exam-layout each set their own `display` (or, for the bar,
   `position: sticky`), which is an author-level rule at the same
   specificity as the browser's built-in `[hidden] { display: none }` --
   author styles win that tie, so the plain `hidden` attribute used to get
   silently ignored on these two and the (empty) exam UI rendered right
   alongside the instructions screen instead of being hidden by it. */
.exam-bar[hidden], .exam-layout[hidden] { display: none; }

/* Focus mode (review.html): the palette aside is one of the elements
   .focus-hide hides via style.display, but that only removes it as a grid
   item -- the grid's own second column track stays reserved and empty
   unless the container itself collapses to one column too. */
.is-focus-mode .exam-layout { grid-template-columns: minmax(0, 1fr); }
.palette { background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius); padding: 16px; position: sticky; top: 90px; }
.palette-grid { display: flex; flex-wrap: wrap; gap: 7px; margin: 10px 0 14px; }

/* In fullscreen (the exam-bar's own toggle, only present on the mock-test
   page) there's a whole monitor to use instead of the site's normal
   1080px-capped .page -- widen both the page and the palette column so a
   long PYQ palette (65 questions) packs into far fewer rows and the whole
   layout fits one screen without scrolling. Duplicated selector covers
   older Safari's prefixed pseudo-class; harmless no-op elsewhere. */
@media (min-width: 900px) {
  :fullscreen .page, :-webkit-full-screen .page { max-width: 1440px; }
  :fullscreen .exam-layout, :-webkit-full-screen .exam-layout { grid-template-columns: minmax(0, 1fr) 400px; }
}
.pbtn {
  width: 34px; height: 34px; border: 1px solid var(--rule); background: var(--wash-2);
  font: 600 .82rem/1 var(--mono); color: var(--ink); cursor: pointer;
  border-radius: 6px; /* not visited */
}
.pbtn[data-state="answered"] { background: var(--right); border-color: var(--right); color: #06210f; }
.pbtn[data-state="seen"] { background: var(--wrong); border-color: var(--wrong); color: #fff; }
.pbtn[data-state="marked"] { background: var(--purple); border-color: var(--purple); color: #1c1035; }
.pbtn[data-state="marked-answered"] { background: var(--purple); border-color: var(--right); color: #1c1035; box-shadow: inset 0 0 0 2px var(--right); }
.pbtn.is-current { outline: 2px solid var(--signal); outline-offset: 1px; }
.legend { display: grid; gap: 6px; font-size: .74rem; color: var(--ink-2); }
.legend-row { display: flex; gap: 7px; align-items: center; }
.swatch { width: 12px; height: 12px; border-radius: 3px; border: 1px solid var(--rule); flex: none; background: var(--wash-2); }
.swatch-nv { border-radius: 50%; }
.swatch-ans { background: var(--right); border-color: var(--right); }
.swatch-seen { background: var(--wrong); border-color: var(--wrong); }
.swatch-mark { background: var(--purple); border-color: var(--purple); border-radius: 50%; }

.exam-nav { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 16px; }

.instructions-screen { display: flex; justify-content: center; }
.instructions-screen[hidden] { display: none; } /* see the .exam-bar[hidden] comment above -- same specificity tie */
.instructions-card {
  max-width: 680px; width: 100%; padding: 30px 32px 26px;
  background: var(--paper);
  background-image: radial-gradient(720px 220px at 100% -10%, color-mix(in srgb, var(--accent) 10%, transparent), transparent);
}
.instr-head h1 { margin: 8px 0 14px; }
.instr-meta { display: flex; flex-wrap: wrap; gap: 8px; }

.instr-section {
  display: flex; gap: 16px; padding: 20px 0;
  border-top: 1px solid var(--rule);
}
.instr-head + .instr-section { margin-top: 22px; }
.instr-section .stat-icon { margin-bottom: 0; }
.instr-section-body { flex: 1; min-width: 0; }
.instr-section-body h2 { margin-bottom: 9px; }
.instructions-list { margin: 0; padding-left: 20px; color: var(--ink-2); display: grid; gap: 6px; }
.instr-legend {
  margin-top: 12px; padding: 12px 14px; background: var(--wash-2); border-radius: var(--radius-sm);
  display: grid; grid-template-columns: repeat(2, auto); gap: 6px 22px;
}

.instr-footer { border-top: 1px solid var(--rule); margin-top: 2px; padding-top: 20px; display: grid; gap: 13px; }
.instr-check { display: flex; gap: 10px; align-items: flex-start; font-size: .92rem; cursor: pointer; }
.instr-check input { margin-top: 3px; flex: none; width: 16px; height: 16px; accent-color: var(--accent); }
#begin-test { width: 100%; margin-top: 5px; padding: 13px; font-size: .98rem; }
#begin-test:disabled { opacity: .45; cursor: not-allowed; }

@media (max-width: 480px) {
  .instructions-card { padding: 22px 18px; }
  .instr-section { flex-direction: column; gap: 10px; }
  .instr-legend { grid-template-columns: 1fr; }
}

/* ------------------------------------------------------------ landing */
.hero {
  background: radial-gradient(1200px 300px at 10% -20%, rgba(232, 169, 59, .10), transparent), var(--paper);
  border: 1px solid var(--rule); border-radius: 14px; padding: 34px;
}
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 34px; align-items: center; }
.hero h1 { margin-bottom: 14px; }
.hero-sub { font-size: 1.06rem; color: var(--ink-2); margin-bottom: 22px; }

/* Guest mode is the actual path most first-time visitors should take --
   no signup friction to try the product -- so it gets the primary slot;
   Create account/Sign in drop to small, quiet links right under it rather
   than competing for attention at the same size. */
.hero-actions form { margin: 0; }
.btn-large { padding: 15px 24px; font-size: 1.02rem; }
.hero-actions-hint { margin: 10px 0 12px; }
.hero-actions-alt { gap: 8px; }

/* Only rendered at all once a second track goes live (see landing_tracks
   in landing()) -- an early, plain-text visual cue that this is a
   multi-exam platform before the visitor even reaches the stat badges. */
.landing-track-toggle { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 14px; }
.landing-track-toggle-label { font-size: .82rem; color: var(--ink-3); margin-right: 2px; }
.landing-track-pill {
  display: inline-block; padding: 5px 14px; border-radius: 100px;
  border: 1px solid var(--rule); background: var(--wash-2); color: var(--ink-2);
  font-size: .84rem; font-weight: 600; text-decoration: none;
}
.landing-track-pill:hover { text-decoration: none; border-color: var(--signal); color: var(--ink); }
.landing-track-pill.is-active { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.specimen { border: 1px solid var(--rule); border-radius: var(--radius); overflow: hidden; }
.specimen-head { background: var(--wash-2); border-bottom: 1px solid var(--rule); padding: 8px 13px; display: flex; justify-content: space-between; font-family: var(--mono); font-size: .72rem; color: var(--ink-2); }
.specimen-body { padding: 15px; background: var(--paper); }
.specimen-q { font-size: .95rem; margin-bottom: 11px; }
.specimen-opt { border: 1px solid var(--rule); border-radius: var(--radius-sm); padding: 8px 12px; font-size: .9rem; margin-bottom: 6px; display: flex; gap: 9px; background: var(--wash-2); }
.specimen-opt .opt-key { color: var(--ink-3); }
.specimen-opt.is-right { border-color: var(--right); background: var(--right-wash); }
.specimen-note { font-family: var(--mono); font-size: .74rem; color: var(--ink-2); margin-top: 10px; }

.marks-strip { display: flex; flex-wrap: wrap; gap: 0; border: 1px solid var(--rule); border-radius: var(--radius); overflow: hidden; background: var(--paper); }
.marks-cell { flex: 1 1 130px; padding: 13px 15px; border-right: 1px solid var(--rule); }
.marks-cell:last-child { border-right: 0; }
.marks-cell .k { font-family: var(--display); font-size: 1.15rem; font-weight: 700; }
.marks-cell .v { font-size: .78rem; color: var(--ink-3); }
.marks-cell .k.neg { color: var(--wrong); }
.marks-cell .k.gold { color: var(--mark); }
.marks-cell .k.purple { color: var(--purple); }

/* ------------------------------------------------- strategy playbook accents
   The /syllabus Strategy tab reuses a four-color system distinct from the
   difficulty tags above (where "hard" is gold, not red) -- green/gold/
   crimson/purple standing in for "solid", "highlight", "urgent" and
   "secondary tier" respectively, so a pass or priority tier can be crimson
   for urgency even though it isn't a difficulty label. */
.strategy-pill {
  display: inline-block; font-family: var(--mono); font-size: .68rem;
  letter-spacing: .06em; text-transform: uppercase; white-space: nowrap;
  border: 1px solid; border-radius: 100px; padding: 3px 10px;
}
.strategy-pill-green   { border-color: var(--tag-easy-border); background: var(--right-wash); color: var(--right); }
.strategy-pill-gold    { border-color: var(--tag-hard-border); background: var(--mark-wash); color: var(--mark); }
.strategy-pill-crimson { border-color: var(--wrong); background: var(--wrong-wash); color: var(--wrong); }
.strategy-pill-purple  { border-color: var(--purple); background: var(--purple-wash); color: var(--purple); }

.strategy-callout {
  border-left: 3px solid var(--mark); background: var(--mark-wash);
  padding: 12px 16px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; font-size: .92rem;
}
.strategy-stamp {
  border: 2px dashed var(--wrong); background: var(--wrong-wash);
  border-radius: var(--radius); padding: 18px 22px; text-align: center;
}
.strategy-nb { border-top: 3px solid var(--nb-color, var(--rule)); }

.pdf-frame { display: block; width: 100%; margin-top: 16px; }
.pdf-page { display: block; width: 100%; border: 1px solid var(--rule); border-radius: var(--radius-sm); margin-bottom: 10px; }
.pdf-page:last-child { margin-bottom: 0; }

/* -------------------------------------------------------- numbered cards */
.mode-card {
  position: relative;
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.mode-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--accent-dim); }
.mode-num {
  font-family: var(--mono); font-size: .8rem; font-weight: 500; color: var(--signal);
  width: 34px; height: 34px; border-radius: 9px; background: var(--tag-medium-bg);
  display: flex; align-items: center; justify-content: center; margin-bottom: 13px;
}
.mode-card:nth-child(2) .mode-num { background: var(--mark-wash); color: var(--mark); }
.mode-card:nth-child(3) .mode-num { background: var(--purple-wash); color: var(--purple); }
.mode-card:nth-child(4) .mode-num { background: var(--right-wash); color: var(--right); }
/* .mode-icon variant: an actual glyph on a solid color chip (set inline per
   card) instead of a plain number -- always white so the icon reads clearly
   against whichever accent that card is given. */
.mode-icon { color: #fff; }
.mode-icon svg { width: 17px; height: 17px; }

/* Full previous-year papers need a clearer hierarchy than the compact cards
   used for choosing a mock mode.  The action stays at the bottom even when
   a session label or a past score adds a line of content. */
.paper-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(245px, 1fr));
  gap: 18px;
}
.paper-card {
  display: flex;
  min-height: 244px;
  flex-direction: column;
  padding: 20px;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background:
    radial-gradient(230px 140px at 100% 0%, color-mix(in srgb, var(--paper-accent) 16%, transparent), transparent 72%),
    var(--paper);
  box-shadow: 0 14px 32px -30px rgba(0,0,0,.9);
  transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease;
}
.paper-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--paper-accent) 64%, var(--rule));
  box-shadow: 0 20px 36px -28px color-mix(in srgb, var(--paper-accent) 50%, #000);
}
.paper-card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.paper-card-icon {
  display: grid; width: 42px; height: 42px; place-items: center;
  border-radius: 12px; background: var(--paper-accent); color: #fff;
  box-shadow: 0 8px 16px -10px var(--paper-accent);
}
.paper-card-icon svg { width: 20px; height: 20px; }
.paper-card-kind {
  color: var(--ink-3); font: 700 .62rem/1 var(--mono);
  letter-spacing: .1em; text-transform: uppercase;
}
.paper-card-title { margin-top: 18px; }
.paper-card-title h3 { margin: 0; color: var(--ink); font-size: 1.3rem; }
.paper-card-title p { margin: 4px 0 0; color: var(--ink-3); font: .72rem/1.35 var(--mono); }
.paper-card-stats {
  display: flex; gap: 8px; margin-top: 18px; color: var(--ink-2); font-size: .84rem;
}
.paper-card-stats span {
  padding: 6px 9px; border: 1px solid color-mix(in srgb, var(--paper-accent) 22%, var(--rule));
  border-radius: 99px; background: color-mix(in srgb, var(--paper-accent) 8%, transparent);
}
.paper-card-stats strong { color: var(--ink); }
.paper-card-best { margin: 15px 0 0; color: var(--ink-2); font-size: .78rem; }
.paper-card-best strong { color: var(--ink); }
.paper-card-actions, form.paper-card-start {
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: auto; padding-top: 18px;
}
.paper-card-start .btn { min-width: 104px; }
a.paper-card-start {
  align-self: flex-start;
  min-width: 104px;
  margin-top: auto;
  padding-top: 9px;
  padding-bottom: 9px;
}
a.paper-card-start.is-resumable {
  border: 1px solid color-mix(in srgb, var(--paper-accent) 65%, var(--rule));
  background: color-mix(in srgb, var(--paper-accent) 15%, var(--wash-2));
  color: var(--ink);
}
a.paper-card-start.is-resumable:hover {
  background: color-mix(in srgb, var(--paper-accent) 24%, var(--wash-2));
}
a.paper-card-start.is-resumable::before { content: "↻"; font-size: 1rem; line-height: .7; }
.paper-card-limit { color: var(--ink-3); font: .68rem/1 var(--mono); }

/* Normal mocks share the visual language of the paper cards while preserving
   their denser subject/topic lists. */
.mock-mode-switcher {
  display: inline-flex; flex-wrap: wrap; gap: 4px; margin: 2px 0 24px;
  padding: 4px; border: 1px solid var(--rule); border-radius: 12px; background: var(--paper);
}
.mock-mode-tab {
  display: inline-flex; align-items: center; gap: 7px; padding: 8px 11px;
  border-radius: 8px; color: var(--ink-2); font-size: .82rem; font-weight: 650;
}
.mock-mode-tab svg { width: 15px; height: 15px; }
.mock-mode-tab:hover { color: var(--ink); background: var(--wash-2); text-decoration: none; }
.mock-mode-tab.is-active { color: var(--accent-ink); background: var(--accent); box-shadow: 0 5px 14px -10px var(--accent); }
.mock-mode-section { margin-bottom: 38px; }
.mock-mode-hero {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px;
  margin-bottom: 28px; padding: 19px 20px;
  border: 1px solid color-mix(in srgb, var(--mock-mode-color) 36%, var(--rule)); border-radius: var(--radius);
  background: linear-gradient(115deg, color-mix(in srgb, var(--mock-mode-color) 13%, var(--paper)), var(--paper) 62%);
}
.mock-mode-intro { display: flex; align-items: center; gap: 14px; min-width: 0; }
.mock-mode-icon {
  display: grid; flex: none; place-items: center; width: 43px; height: 43px;
  border-radius: 12px; background: var(--mock-mode-color); color: #fff;
}
.mock-mode-icon svg { width: 21px; height: 21px; }
.mock-mode-kicker { margin: 0 0 4px; color: var(--ink-3); font: 700 .62rem/1 var(--mono); letter-spacing: .09em; text-transform: uppercase; }
.mock-mode-hero h2 { margin: 0 0 4px; font-size: 1.15rem; }
.mock-mode-hero p:not(.mock-mode-kicker) { max-width: 680px; margin: 0; color: var(--ink-2); font-size: .86rem; }
.mock-section-heading { display: flex; align-items: end; justify-content: space-between; margin: 25px 0 10px; }
.mock-section-heading p { margin: 0 0 3px; color: var(--ink-3); font: 700 .62rem/1 var(--mono); letter-spacing: .09em; text-transform: uppercase; }
.mock-section-heading h3 { margin: 0; font-size: 1rem; }
.mock-section-heading-mine { margin-top: 32px; }
.mock-list { display: grid; gap: 10px; }
.mock-list-card {
  padding: 15px 17px; border: 1px solid var(--rule); border-radius: var(--radius); background: var(--paper);
  transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.mock-list-card:hover { transform: translateY(-1px); border-color: var(--accent-dim); box-shadow: 0 14px 28px -28px rgba(0,0,0,.9); }
.mock-list-card-layout { min-height: 46px; }
.mock-list-copy { min-width: 0; }
.mock-list-copy h3 { margin: 0; font-size: 1rem; }
.mock-list-copy .qmeta { margin: 5px 0 0 !important; }
.mock-list-copy .qmeta strong { color: var(--ink); }
.mock-list-actions { justify-content: flex-end; }
.mock-row { transition: background .15s ease; }
.mock-row:hover { background: color-mix(in srgb, var(--accent) 5%, var(--paper)); }
.mock-group-head { transition: background .15s ease; }
.mock-group-head:hover { background: var(--wash-2); }

/* Give the mock hub a stronger identity: the selected mode determines the
   visual accent carried through its header, cards, and group summaries. */
.mock-mode-switcher {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); width: min(100%, 560px);
  gap: 5px; padding: 5px; border-radius: 15px;
  background: color-mix(in srgb, var(--paper) 82%, var(--wash-2));
  box-shadow: inset 0 1px 0 color-mix(in srgb, #fff 7%, transparent);
}
.mock-mode-tab { justify-content: center; min-height: 40px; border: 1px solid transparent; }
.mock-mode-tab.is-active {
  border-color: color-mix(in srgb, var(--accent) 68%, transparent);
  box-shadow: 0 9px 19px -14px var(--accent), inset 0 1px 0 rgba(255,255,255,.18);
}
.mock-mode-hero {
  position: relative; isolation: isolate; overflow: hidden; min-height: 110px;
  border-left: 4px solid var(--mock-mode-color);
  box-shadow: 0 19px 42px -36px color-mix(in srgb, var(--mock-mode-color) 80%, #000);
}
.mock-mode-hero::before,
.mock-mode-hero::after {
  position: absolute; z-index: -1; border-radius: 50%; content: ""; pointer-events: none;
  background: color-mix(in srgb, var(--mock-mode-color) 16%, transparent);
}
.mock-mode-hero::before { width: 190px; height: 190px; right: 14%; top: -128px; }
.mock-mode-hero::after { width: 92px; height: 92px; right: -28px; bottom: -38px; }
.mock-mode-icon {
  width: 52px; height: 52px; border-radius: 15px;
  box-shadow: 0 13px 24px -15px var(--mock-mode-color), inset 0 1px 0 rgba(255,255,255,.24);
}
.mock-mode-icon svg { width: 24px; height: 24px; }
.mock-mode-hero h2 { font-size: 1.32rem; letter-spacing: -.015em; }
.mock-mode-hero > .btn { box-shadow: 0 12px 22px -14px var(--accent); }
.mock-route-grid { display:grid; grid-template-columns:repeat(2, minmax(0, 1fr)); gap:12px; margin:-8px 0 29px; }
.mock-route-card { position:relative; display:flex; align-items:center; gap:13px; min-height:108px; padding:16px; overflow:hidden; border:1px solid var(--rule); border-radius:14px; color:var(--ink); background:var(--paper); transition:transform .16s ease, border-color .16s ease, box-shadow .16s ease; }
.mock-route-card::before { position:absolute; content:""; inset:0; opacity:.78; pointer-events:none; }
.mock-route-card > * { position:relative; z-index:1; }.mock-route-card:hover { transform:translateY(-2px); text-decoration:none; }
.mock-route-official { border-color:color-mix(in srgb, var(--mock-mode-color) 34%, var(--rule)); }.mock-route-official::before { background:linear-gradient(120deg, color-mix(in srgb, var(--mock-mode-color) 12%, transparent), transparent 68%); }.mock-route-official:hover { border-color:var(--mock-mode-color); box-shadow:0 19px 32px -28px color-mix(in srgb, var(--mock-mode-color) 90%, #000); }
.mock-route-builder { border-color:color-mix(in srgb, var(--accent) 38%, var(--rule)); }.mock-route-builder::before { background:linear-gradient(120deg, color-mix(in srgb, var(--accent) 14%, transparent), transparent 68%); }.mock-route-builder:hover { border-color:var(--accent); box-shadow:0 19px 32px -28px var(--accent); }
.mock-route-icon { display:grid; flex:none; place-items:center; width:41px; height:41px; border-radius:12px; color:var(--mock-mode-color); background:color-mix(in srgb, var(--mock-mode-color) 14%, var(--wash-2)); }.mock-route-builder .mock-route-icon { color:var(--accent-ink); background:var(--accent); }.mock-route-icon svg { width:20px; height:20px; }
.mock-route-eyebrow { display:block; margin-bottom:2px; color:var(--ink-3); font:700 .61rem/1.25 var(--mono); letter-spacing:.08em; text-transform:uppercase; }.mock-route-card strong { display:block; font:650 1rem/1.25 var(--display); }.mock-route-card small { display:block; max-width:280px; margin-top:4px; color:var(--ink-2); font-size:.78rem; line-height:1.4; }.mock-route-arrow { margin-left:auto; color:var(--ink-3); font:600 1.15rem/1 var(--display); }
.mock-new-inline { align-self:center; white-space:nowrap; }
.mock-section-heading {
  position: relative; padding: 0 0 10px; border-bottom: 1px solid var(--rule);
}
.mock-section-heading::after {
  position: absolute; left: 0; bottom: -1px; width: 48px; height: 2px; content: "";
  border-radius: 2px; background: var(--mock-mode-color);
}
.mock-section-heading h3 { font-size: 1.08rem; }
.mock-list-card {
  position: relative; overflow: hidden; padding: 0;
  border-color: color-mix(in srgb, var(--mock-mode-color) 19%, var(--rule));
  background: linear-gradient(105deg, color-mix(in srgb, var(--mock-mode-color) 7%, var(--paper)), var(--paper) 48%);
}
.mock-list-card::before {
  position: absolute; top: 0; bottom: 0; left: 0; width: 3px; content: ""; background: var(--mock-mode-color);
}
.mock-list-card-layout { padding: 16px 17px 16px 19px; gap: 14px; }
.mock-list-mark {
  display: grid; flex: none; place-items: center; width: 37px; height: 37px;
  border-radius: 11px; background: color-mix(in srgb, var(--mock-mode-color) 16%, var(--wash-2));
  color: var(--mock-mode-color);
}
.mock-list-mark svg { width: 18px; height: 18px; }
.mock-list-copy { flex: 1; }
.mock-list-copy h3 { font-family: var(--display); font-size: 1.03rem; letter-spacing: -.01em; }
.mock-list-card:hover {
  border-color: color-mix(in srgb, var(--mock-mode-color) 58%, var(--rule));
  box-shadow: 0 20px 35px -31px color-mix(in srgb, var(--mock-mode-color) 76%, #000);
}
.mock-list-actions .btn-primary, .mock-list-actions.btn-primary { box-shadow: 0 8px 17px -13px var(--accent); }
.mock-group {
  border-color: color-mix(in srgb, var(--mock-mode-color) 17%, var(--rule));
  box-shadow: 0 12px 28px -32px rgba(0,0,0,.9);
}
.mock-group[open] { border-color: color-mix(in srgb, var(--mock-mode-color) 42%, var(--rule)); }
.mock-group-head { padding: 15px 16px; }
.mock-group-head .qmeta {
  padding: 5px 8px; border-radius: 99px; background: color-mix(in srgb, var(--mock-mode-color) 10%, transparent);
}

/* One feature gets to stand out from the six -- 1v1 duels is the one people
   don't expect from a question bank, so it earns a tinted card, an accent
   border and a corner badge instead of blending into an identical grid. */
.mode-card-spotlight {
  border-color: var(--accent-dim);
  background: linear-gradient(155deg, color-mix(in srgb, var(--accent) 13%, var(--paper)), var(--paper) 65%);
}
.mode-card-spotlight:hover { border-color: var(--accent); }
.mode-card-badge {
  position: absolute; top: 16px; right: 16px;
  font-family: var(--mono); font-size: .64rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  padding: 3px 10px; border-radius: 100px;
  background: var(--mark-wash); color: var(--mark); border: 1px solid var(--tag-hard-border);
}

/* ------------------------------------------------------- mock accordion */
.mock-accordion { display: flex; flex-direction: column; gap: 10px; }
.mock-group {
  border: 1px solid var(--rule); border-radius: var(--radius); background: var(--paper);
  overflow: hidden;
}
.mock-group-head {
  display: flex; align-items: center; gap: 12px; padding: 14px 16px; cursor: pointer;
  list-style: none; user-select: none;
}
.mock-group-head::-webkit-details-marker { display: none; }
.mock-group-head .chevron {
  flex: none; width: 18px; height: 18px; color: var(--ink-3); transition: transform .15s ease;
}
.mock-group[open] > .mock-group-head .chevron { transform: rotate(90deg); }
.mock-group-icon {
  flex: none; width: 32px; height: 32px; border-radius: 9px; display: flex; align-items: center;
  justify-content: center; font-family: var(--mono); font-size: .72rem; font-weight: 600; color: #fff;
}
.mock-group-head h3 { flex: 1; font-size: 1rem; margin: 0; }
.mock-group-head .qmeta { flex: none; }
.mock-group-body { border-top: 1px solid var(--rule); }
.mock-row {
  display: flex; align-items: center; gap: 12px; padding: 12px 16px 12px 44px;
  border-bottom: 1px solid var(--rule);
}
.mock-row:last-child { border-bottom: none; }
.mock-row-icon { flex: none; color: var(--mark); }
.mock-row-main { flex: 1; min-width: 0; }
.mock-row-main h4 { margin: 0; font-size: .92rem; font-weight: 600; }
.mock-row-main p { margin: 2px 0 0; }
.mock-row-actions { flex: none; display: flex; gap: 8px; align-items: center; }

/* ------------------------------------------------------- landing: hero */
.stat-badges { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.stat-badge {
  display: flex; align-items: center; gap: 7px;
  border: 1px solid var(--rule); background: var(--wash-2);
  border-radius: 999px; padding: 5px 12px 5px 9px;
  font-size: .82rem;
}
.stat-badge .dot { width: 7px; height: 7px; border-radius: 50%; flex: none; }
.stat-badge .num { font-family: var(--mono); font-weight: 600; color: var(--ink); }
.stat-badge .lbl { color: var(--ink-3); }

.headline mark {
  background: none; color: inherit; position: relative; display: inline-block; padding: 0 1px;
}
.headline mark::after {
  content: ""; position: absolute; left: -1px; right: -1px; bottom: .06em; height: .3em;
  background: color-mix(in srgb, var(--accent) 35%, transparent); border-radius: 2px; z-index: -1;
}
.hero .btn-primary {
  box-shadow: 0 8px 20px -9px color-mix(in srgb, var(--accent) 70%, transparent);
}

/* ---------------------------------------------------- landing: subjects */
.subject-card { position: relative; padding-left: 22px; overflow: hidden; }
.subject-card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: var(--sub-color);
}
.subject-chip {
  display: inline-flex; font-family: var(--mono); font-size: .72rem; font-weight: 500;
  padding: 3px 9px; border-radius: 6px; margin-bottom: 6px;
  background: var(--sub-wash); color: var(--sub-color);
}
.grid-3 .subject-card:nth-child(1)  { --sub-color: var(--s1);  --sub-wash: var(--s1-wash); }
.grid-3 .subject-card:nth-child(2)  { --sub-color: var(--s2);  --sub-wash: var(--s2-wash); }
.grid-3 .subject-card:nth-child(3)  { --sub-color: var(--s3);  --sub-wash: var(--s3-wash); }
.grid-3 .subject-card:nth-child(4)  { --sub-color: var(--s4);  --sub-wash: var(--s4-wash); }
.grid-3 .subject-card:nth-child(5)  { --sub-color: var(--s5);  --sub-wash: var(--s5-wash); }
.grid-3 .subject-card:nth-child(6)  { --sub-color: var(--s6);  --sub-wash: var(--s6-wash); }
.grid-3 .subject-card:nth-child(7)  { --sub-color: var(--s7);  --sub-wash: var(--s7-wash); }
.grid-3 .subject-card:nth-child(8)  { --sub-color: var(--s8);  --sub-wash: var(--s8-wash); }
.grid-3 .subject-card:nth-child(9)  { --sub-color: var(--s9);  --sub-wash: var(--s9-wash); }
.grid-3 .subject-card:nth-child(10) { --sub-color: var(--s10); --sub-wash: var(--s10-wash); }
.grid-3 .subject-card:nth-child(11) { --sub-color: var(--s11); --sub-wash: var(--s11-wash); }

/* ------------------------------------------------------------- results */
.table-wrap { overflow-x: auto; background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius); }
.table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.table th, .table td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--rule); white-space: nowrap; }
.table th { font-family: var(--mono); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); background: var(--wash-2); }
.table tr:last-child td { border-bottom: 0; }
.num { font-family: var(--mono); }
.bar { height: 6px; background: var(--wash-2); border-radius: 3px; overflow: hidden; min-width: 90px; }
.bar-fill { height: 100%; background: var(--signal); transition: width .4s ease; }
.bar-fill.strong { background: var(--right); }
.bar-fill.moderate { background: var(--mark); }
.bar-fill.weak { background: var(--wrong); }

.donut {
  width: 150px; height: 150px; border-radius: 50%; margin: 0 auto;
  display: flex; align-items: center; justify-content: center;
}
.donut-hole {
  width: 104px; height: 104px; border-radius: 50%; background: var(--paper);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.donut-value { font-family: var(--display); font-size: 1.5rem; font-weight: 700; letter-spacing: -.02em; }
.donut-label { font-size: .7rem; color: var(--ink-3); text-transform: uppercase; letter-spacing: .05em; margin-top: 2px; }

/* -------------------------------------------------------- formula vault */
/* Sticky so search/toggle/saved stay reachable on a long sheet (OS's Module
   2 runs 8 formula cards + 5 traps) without scrolling back to the top. */
.formula-toolbar-bar {
  position: sticky; top: 0; z-index: 5; background: var(--wash);
  padding: 12px 0; margin-bottom: 10px;
}
.formula-toolbar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.formula-search { width: 240px; max-width: 100%; }

.seg-toggle { display: flex; border: 1px solid var(--rule); border-radius: 100px; padding: 2px; background: var(--wash-2); }
.seg-btn {
  border: 0; background: transparent; color: var(--ink-2); font-size: .85rem;
  padding: 6px 14px; border-radius: 100px; cursor: pointer; white-space: nowrap;
}
.seg-btn:hover { color: var(--ink); }
.seg-btn.is-active { background: var(--accent); color: var(--paper); font-weight: 600; }

.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 50%; border: 1px solid var(--rule);
  background: var(--wash-2); color: var(--ink-2); font-size: 1rem; flex: none;
}
.icon-btn:hover { color: var(--ink); border-color: var(--signal); text-decoration: none; }

.rail-saved-link {
  display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: var(--radius-sm);
  color: var(--ink-2); font-size: .88rem; margin-top: 8px; border-top: 1px solid var(--rule); padding-top: 14px;
}
.rail-saved-link:hover { background: var(--wash-2); color: var(--ink); text-decoration: none; }

.formula-sheet-head {
  display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; margin-bottom: 2px;
}
.formula-sheet-num {
  font-family: var(--mono); font-size: .68rem; font-weight: 700;
  letter-spacing: .05em; text-transform: uppercase; white-space: nowrap;
  color: var(--sub-color, var(--accent)); background: var(--sub-wash, var(--wash-2));
  border-radius: 100px; padding: 3px 10px;
}
.formula-sheet-title { margin: 0; font-size: 1.12rem; }

.formula-section-label {
  font-family: var(--mono); font-size: .72rem; font-weight: 700;
  letter-spacing: .07em; text-transform: uppercase; color: var(--ink-3);
  margin: 20px 0 10px; display: flex; align-items: center; gap: 8px;
}
.formula-sheet > .formula-section-label:first-of-type { margin-top: 16px; }

.concept-list { margin: 0; padding-left: 20px; display: grid; gap: 8px; color: var(--ink-2); font-size: .93rem; line-height: 1.5; }
.concept-list li::marker { color: var(--sub-color, var(--accent)); }

.eq-list { display: grid; gap: 8px; }
.eq-box {
  background: var(--wash-2); border-left: 3px solid var(--sub-color, var(--accent));
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 12px 16px; font-size: 1rem; color: var(--ink); overflow-x: auto; overflow-y: hidden;
}
.eq-box .katex-display { margin: 0; }
.eq-box .katex { font-size: 1.04em; }

/* Per-formula cards (Key Formulas, once a sheet has items_json) -- a named,
   individually-bookmarkable equation, as opposed to the anonymous eq-box
   list above (still used as a fallback for un-migrated sheets). */
.formula-card-grid {
  /* Capped at 340px so a row of 1-2 short cards doesn't stretch edge-to-edge
     into an awkwardly sparse-looking card on a wide screen. */
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 340px)); gap: 10px;
}
.formula-card {
  background: var(--wash-2); border: 1px solid var(--rule); border-radius: var(--radius-sm);
  padding: 14px 16px; display: flex; flex-direction: column; gap: 8px;
}
.formula-card.is-wide { grid-column: 1 / -1; }
.formula-card.is-search-hidden { display: none; }
/* Bookmarked cards get the subject's accent so a saved formula reads at a
   glance while scanning a sheet, not just from its (small) filled star. */
.formula-card:has(.bookmark-icon-btn.is-bookmarked) {
  border-color: var(--sub-color, var(--accent));
  background: var(--sub-wash, var(--wash-2));
}
.formula-card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; }
.formula-card-label { font-weight: 600; font-size: .88rem; color: var(--ink); }
.formula-card-eq { font-size: 1.05rem; color: var(--ink); overflow-x: auto; overflow-y: hidden; text-align: center; padding: 4px 0; }
.formula-card-eq .katex-display { margin: 0; }
.formula-card-caption { font-size: .78rem; color: var(--ink-3); text-align: center; }
.formula-card-source { font-size: .76rem; color: var(--ink-3); margin: 2px 0 0; }

.bookmark-icon-btn {
  flex: none; width: 26px; height: 26px; display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%; border: 0; background: transparent; color: var(--ink-3); font-size: 1.05rem; cursor: pointer;
}
.bookmark-icon-btn:hover { background: var(--sub-wash, var(--tag-medium-bg)); color: var(--sub-color, var(--accent)); text-decoration: none; }
.bookmark-icon-btn.is-bookmarked { color: var(--sub-color, var(--accent)); }

/* "Test your recall" flip card -- one flashcard per sheet, first formula. */
.recall-card {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  background: var(--sub-wash, var(--wash-2)); border: 1px solid var(--rule); border-radius: var(--radius-sm);
  padding: 14px 16px; margin-top: 18px;
}
.recall-question { margin: 0; font-weight: 600; color: var(--ink); }
.recall-reveal { flex: none; }
.recall-reveal > summary {
  list-style: none; cursor: pointer; padding: 8px 16px; border-radius: 100px;
  background: var(--sub-color, var(--accent)); color: var(--paper); font-weight: 600; font-size: .85rem;
  white-space: nowrap;
}
.recall-reveal > summary::-webkit-details-marker { display: none; }
.recall-reveal[open] > summary { border-radius: var(--radius-sm) var(--radius-sm) 0 0; }
.recall-reveal .reveal-body { background: var(--paper); border: 1px solid var(--rule); border-top: 0; border-radius: 0 0 var(--radius-sm) var(--radius-sm); padding: 12px 16px; }

/* Titled, collapsible GATE traps (once a sheet has items_json) -- a lighter
   alternative to the flat numbered .trap-list fallback below. */
.trap-accordion { display: grid; gap: 8px; }
.trap-reveal.reveal { border-left: 3px solid var(--wrong); }
.trap-reveal > summary::before { color: var(--wrong); }
.trap-reveal.is-search-hidden { display: none; }

.trap-list {
  background: var(--paper); border: 1px solid var(--rule);
  border-radius: var(--radius-sm); overflow: hidden;
}
.trap-card {
  display: flex; gap: 12px; align-items: baseline;
  padding: 11px 15px; font-size: .89rem; color: var(--ink-2); line-height: 1.55;
}
.trap-card + .trap-card { border-top: 1px solid var(--rule); }
.trap-text { flex: 1; min-width: 0; }
.trap-badge {
  flex: none; display: inline-flex; align-items: center; justify-content: center;
  width: 20px; height: 20px; margin-top: 1px;
  font-family: var(--mono); font-size: .7rem; font-weight: 700;
  background: var(--wrong-wash); color: var(--wrong); border-radius: 50%;
}

.formula-ref-table th, .formula-ref-table td { text-align: center; white-space: nowrap; padding: 8px 12px; font-size: .88rem; }
.formula-ref-table thead th { background: var(--wash-2); font-family: var(--mono); font-size: .72rem; text-transform: uppercase; letter-spacing: .04em; color: var(--ink-3); border-bottom: 2px solid var(--sub-color, var(--rule)); }
.formula-ref-table .formula-ref-rowhead { text-align: left; font-weight: 600; }
.formula-ref-table tbody tr:hover { background: var(--wash-2); }
.formula-ref-yes { color: var(--right); font-weight: 700; font-size: 1.05rem; }
.formula-ref-no { color: var(--wrong); font-weight: 700; font-size: 1.05rem; }

/* "Only formulas" view (see #formulaViewToggle) -- hides everything but the
   Key Formulas cards and the reference table for a bare last-minute skim. */
.formula-vault-layout.view-formulas-only .formula-block-concepts,
.formula-vault-layout.view-formulas-only .formula-block-traps,
.formula-vault-layout.view-formulas-only .recall-card { display: none; }

.formula-search-empty {
  color: var(--ink-3); font-size: .9rem; padding: 14px 0;
}
.concept-list li.is-search-hidden { display: none; }

.tabs { display: flex; flex-wrap: wrap; gap: 4px; border-bottom: 1px solid var(--rule); margin-bottom: 20px; }
.tab { padding: 9px 14px; color: var(--ink-2); font-size: .93rem; border-bottom: 2px solid transparent; }
.tab:hover { text-decoration: none; color: var(--ink); }
.tab.is-active { color: var(--ink); border-bottom-color: var(--accent); font-weight: 600; }

.status-filter { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 20px; }

/* practice session filter bar -- status/difficulty as seg-tab pill groups
   (same idiom as the leaderboard period switcher) plus a standalone PYQ
   toggle chip, each group color-coded so the active choice reads at a
   glance instead of blending into a row of identical buttons. */
.filterbar { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 26px; margin-bottom: 22px; }
.filter-group { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.filter-group-label {
  font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .07em;
  color: var(--ink-3); white-space: nowrap;
}
.filterbar .seg-tabs { margin-top: 0; }
.seg-tab.is-active[data-status="new"]        { background: var(--purple-wash); color: var(--purple); }
.seg-tab.is-active[data-status="review"]     { background: var(--wrong-wash); color: var(--wrong); }
.seg-tab.is-active[data-status="solved"]     { background: var(--right-wash); color: var(--right); }
.seg-tab.is-active[data-status="bookmarked"] { background: var(--mark-wash); color: var(--mark); }
.seg-tab.is-active[data-diff="all"]          { background: var(--wash); color: var(--ink); }
.seg-tab.is-active[data-diff="easy"]         { background: var(--right-wash); color: var(--right); }
.seg-tab.is-active[data-diff="medium"]       { background: var(--tag-medium-bg); color: var(--signal); }
.seg-tab.is-active[data-diff="hard"]         { background: var(--mark-wash); color: var(--mark); }

.pyq-toggle {
  display: inline-flex; align-items: center; gap: 7px; padding: 9px 16px 9px 13px;
  border-radius: 100px; border: 1px solid var(--rule); background: var(--wash-2);
  color: var(--ink-2); font-size: .89rem; font-weight: 500;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.pyq-toggle svg { width: 14px; height: 14px; }
.pyq-toggle:hover { text-decoration: none; color: var(--ink); border-color: var(--accent-dim); }
.pyq-toggle.is-active {
  background: var(--mark-wash); border-color: var(--tag-hard-border); color: var(--accent); font-weight: 600;
}
.pyq-toggle.is-active svg { fill: var(--accent); }

/* ------------------------------------------------------- PYQ mastery */
.performance-grid {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: start; gap: 22px; margin-top: 28px;
}
.performance-panel {
  overflow: hidden; border: 1px solid var(--rule); border-radius: calc(var(--radius) + 2px);
  background: var(--paper); box-shadow: 0 12px 30px -28px rgba(0,0,0,.7);
}
.performance-head {
  display: flex; align-items: center; justify-content: space-between; gap: 18px;
  min-height: 75px; padding: 17px 19px; border-bottom: 1px solid var(--rule);
  background: linear-gradient(135deg, color-mix(in srgb, var(--paper) 90%, var(--accent)), var(--paper));
}
.performance-head .eyebrow { margin: 0 0 4px; }
.performance-head h2 { margin: 0; font-size: 1.25rem; }
.performance-head > span, .performance-head > a {
  flex: none; padding: 6px 9px; border-radius: 99px; background: var(--wash-2);
  color: var(--ink-3); font: 650 .68rem/1 var(--mono);
}
.performance-head > a:hover { color: var(--accent); text-decoration: none; }
.subject-performance-list, .recent-mock-list { display: grid; }
.subject-performance-row {
  display: block; padding: 15px 18px; color: var(--ink);
  border-bottom: 1px solid var(--rule); transition: background .15s ease;
}
.subject-performance-row:last-child, .recent-mock-card:last-child { border-bottom: 0; }
.subject-performance-row:hover { background: var(--wash-2); text-decoration: none; }
.subject-performance-top, .subject-performance-meta, .recent-mock-title {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.subject-performance-top strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: .93rem; }
.performance-label { flex: none; padding: 4px 7px; border-radius: 99px; font: 700 .61rem/1 var(--mono); text-transform: uppercase; }
.performance-label.strong { color: var(--right); background: var(--right-wash); }
.performance-label.steady { color: var(--signal); background: var(--tag-medium-bg); }
.performance-label.weak { color: var(--wrong); background: var(--wrong-wash); }
.performance-label.limited { color: var(--ink-3); background: var(--wash-2); }
.subject-performance-meta { margin: 8px 0 6px; color: var(--ink-3); font: 600 .68rem/1 var(--mono); }
.subject-performance-meta b { color: var(--ink); font-size: .76rem; }
.performance-bar { height: 6px; overflow: hidden; border-radius: 99px; background: var(--wash-2); }
.performance-bar i { display: block; height: 100%; border-radius: inherit; background: var(--ink-3); }
.performance-bar i.strong { background: var(--right); }
.performance-bar i.steady { background: var(--signal); }
.performance-bar i.weak { background: var(--wrong); }
.recent-mock-card {
  display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 18px;
  min-height: 108px; padding: 15px 18px; color: var(--ink); border-bottom: 1px solid var(--rule);
  transition: background .15s ease;
}
.recent-mock-card:hover { background: var(--wash-2); text-decoration: none; }
.recent-mock-main { min-width: 0; }
.recent-mock-title h3 { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: .96rem; }
.recent-mock-title > span { flex: none; color: var(--ink-3); font: 600 .64rem/1 var(--mono); }
.mock-result-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.mock-result-chips span { padding: 5px 7px; border-radius: 6px; font: 650 .62rem/1 var(--mono); }
.mock-result-chips .correct { color: var(--right); background: var(--right-wash); }
.mock-result-chips .wrong { color: var(--wrong); background: var(--wrong-wash); }
.mock-result-chips .skipped { color: var(--ink-3); background: var(--wash-2); }
.recent-mock-score { min-width: 92px; text-align: right; }
.recent-mock-score strong { display: block; color: var(--ink); font: 750 1.5rem/1 var(--display); font-variant-numeric: tabular-nums; }
.recent-mock-score > span { display: block; margin-top: 5px; color: var(--ink-3); font: 600 .64rem/1 var(--mono); }
.recent-mock-score i { display: block; margin-top: 10px; color: var(--accent); font: 650 .68rem/1 var(--body); font-style: normal; }
@media (max-width: 860px) { .performance-grid { grid-template-columns: 1fr; } }
@media (max-width: 480px) {
  .recent-mock-card { grid-template-columns: 1fr; }
  .recent-mock-score { display: flex; align-items: baseline; gap: 8px; text-align: left; }
  .recent-mock-score i { margin: 0 0 0 auto; }
  .recent-mock-title { align-items: flex-start; }
}

.daily-challenge {
  position: relative; overflow: hidden; display: grid;
  grid-template-columns: minmax(0, 1fr) auto; gap: 20px 28px;
  margin: 18px 0 22px; padding: 25px;
  border: 1px solid color-mix(in srgb, var(--signal) 48%, var(--rule));
  border-radius: calc(var(--radius) + 6px);
  background:
    radial-gradient(circle at 92% 5%, color-mix(in srgb, var(--signal) 24%, transparent), transparent 34%),
    linear-gradient(135deg, color-mix(in srgb, var(--paper) 86%, var(--signal)), var(--paper) 62%);
  box-shadow: var(--shadow);
}
.daily-challenge::after {
  content: "10"; position: absolute; right: -8px; bottom: -45px;
  color: color-mix(in srgb, var(--signal) 8%, transparent);
  font: 800 10rem/1 var(--display); pointer-events: none;
}
.daily-challenge > * { position: relative; z-index: 1; }
.daily-challenge-main h2 { margin: 7px 0 5px; font-size: 1.45rem; }
.daily-challenge-main > p { margin: 0 0 15px; color: var(--ink-2); }
.daily-challenge-kicker { display: flex; align-items: center; gap: 8px; font: 700 .68rem/1 var(--mono); text-transform: uppercase; letter-spacing: .09em; }
.daily-challenge-kicker span { color: var(--signal); }
.daily-challenge-kicker b { padding: 5px 8px; border-radius: 99px; background: var(--tag-medium-bg); color: var(--ink-2); letter-spacing: 0; }
.daily-challenge-progress { height: 10px; overflow: hidden; border-radius: 99px; background: color-mix(in srgb, var(--signal) 14%, var(--wash-2)); }
.daily-challenge-progress i { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--signal), var(--accent)); transition: width .35s ease; }
.daily-challenge-actions { display: flex; align-items: center; gap: 14px; margin-top: 16px; color: var(--ink-3); font-size: .8rem; }
.daily-challenge-score {
  align-self: center; width: 132px; aspect-ratio: 1; border-radius: 50%;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: var(--paper); border: 9px solid color-mix(in srgb, var(--signal) 34%, var(--wash));
  box-shadow: 0 10px 28px -22px #000;
}
.daily-challenge-score strong { font: 800 2rem/1 var(--display); color: var(--ink); }
.daily-challenge-score small { color: var(--ink-3); font-size: .9rem; }
.daily-challenge-score > span { margin-top: 6px; color: var(--ink-3); font: 600 .61rem/1 var(--mono); text-transform: uppercase; }
.daily-challenge-stats { grid-column: 1; display: flex; gap: 8px; flex-wrap: wrap; }
.daily-challenge-stats span { padding: 7px 10px; border-radius: 8px; background: color-mix(in srgb, var(--paper) 76%, var(--wash-2)); color: var(--ink-3); font-size: .78rem; }
.daily-challenge-stats b { color: var(--ink); }
.challenge-week { grid-column: 2; display: flex; gap: 6px; justify-content: flex-end; }
.challenge-day { display: flex; flex-direction: column; align-items: center; gap: 5px; color: var(--ink-3); font: 600 .62rem/1 var(--mono); }
.challenge-day i { width: 27px; height: 27px; border-radius: 8px; display: grid; place-items: center; background: var(--wash-2); border: 1px solid var(--rule); font-style: normal; }
.challenge-day.is-complete i { background: var(--right); border-color: var(--right); color: #06210f; }
.challenge-day.is-today i { outline: 2px solid var(--signal); outline-offset: 2px; }
.daily-challenge.is-complete { border-color: color-mix(in srgb, var(--right) 65%, var(--rule)); }
.daily-challenge.is-complete .daily-challenge-score { border-color: var(--right); }
.daily-challenge-compact { align-items: center; padding: 20px 22px; }
.daily-challenge-compact .daily-challenge-actions { margin: 0; flex-direction: column; align-items: flex-end; }
.challenge-mode-pill { padding: 7px 10px; border-radius: 99px; background: var(--right-wash); color: var(--right); font: 700 .68rem/1 var(--mono); text-transform: uppercase; }

.pyq-progress-card {
  position: relative; isolation: isolate; overflow: hidden;
  display: grid; grid-template-columns: minmax(0, 1fr) auto;
  align-items: center; gap: 24px; padding: 24px;
  border: 1px solid color-mix(in srgb, var(--accent) 48%, var(--rule));
  border-radius: calc(var(--radius) + 5px);
  background:
    radial-gradient(circle at 90% 12%, color-mix(in srgb, var(--signal) 18%, transparent), transparent 32%),
    linear-gradient(135deg, color-mix(in srgb, var(--paper) 90%, var(--accent)), var(--paper) 64%);
  box-shadow: var(--shadow); color: var(--ink);
}
.pyq-progress-card::before {
  content: ""; position: absolute; z-index: -1; width: 170px; height: 170px;
  right: -72px; bottom: -92px; border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
}
.pyq-progress-dashboard { margin: 18px 0 22px; transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease; }
.pyq-progress-dashboard:hover {
  color: var(--ink); text-decoration: none; transform: translateY(-2px);
  border-color: var(--accent); box-shadow: 0 14px 32px -20px color-mix(in srgb, var(--accent) 80%, #000);
}
.pyq-progress-copy { min-width: 0; }
.pyq-progress-kicker {
  display: flex; align-items: center; gap: 8px; margin-bottom: 8px;
  color: var(--accent); font: 700 .7rem/1.2 var(--mono); letter-spacing: .1em; text-transform: uppercase;
}
.pyq-progress-kicker-icon {
  display: inline-flex; align-items: center; justify-content: center; width: 27px; height: 27px;
  border-radius: 8px; background: var(--accent); color: var(--accent-ink);
}
.pyq-progress-kicker-icon svg { width: 15px; height: 15px; }
.pyq-progress-heading { display: flex; align-items: baseline; gap: 8px; margin-bottom: 5px; }
.pyq-progress-heading strong, .pyq-progress-detail h2 strong { color: var(--ink); font: 750 2rem/1 var(--display); }
.pyq-progress-heading span { color: var(--ink-2); font-weight: 600; }
.pyq-progress-detail h2 { margin: 0 0 6px; font-size: 1.2rem; }
.pyq-progress-copy > p { margin: 0 0 16px; color: var(--ink-2); }
.pyq-progress-track {
  height: 9px; overflow: hidden; border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 13%, var(--wash-2)); box-shadow: inset 0 1px 2px rgba(0,0,0,.08);
}
.pyq-progress-track span { display: block; height: 100%; min-width: 3px; border-radius: inherit; background: linear-gradient(90deg, var(--accent), var(--signal)); }
.pyq-progress-meta {
  display: flex; justify-content: space-between; gap: 12px; margin-top: 8px;
  color: var(--ink-3); font: 600 .75rem/1.3 var(--mono);
}
.pyq-progress-ring {
  flex: none; width: 126px; aspect-ratio: 1; padding: 9px; border-radius: 50%;
  background: conic-gradient(var(--accent) calc(var(--pct) * 1%), color-mix(in srgb, var(--accent) 14%, var(--wash-2)) 0);
  box-shadow: 0 10px 30px -20px color-mix(in srgb, var(--accent) 90%, #000);
}
.pyq-progress-ring > div {
  height: 100%; border-radius: 50%; background: var(--paper); display: flex; flex-direction: column;
  align-items: center; justify-content: center; border: 1px solid color-mix(in srgb, var(--accent) 18%, var(--rule));
}
.pyq-progress-ring strong { font: 750 1.55rem/1 var(--display); color: var(--ink); }
.pyq-progress-ring span { margin-top: 5px; color: var(--ink-3); font: 600 .62rem/1 var(--mono); text-transform: uppercase; }
.pyq-progress-detail { margin: 18px 0 24px; }
.pyq-subject-progress {
  grid-column: 1 / -1; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px; padding-top: 18px; border-top: 1px solid color-mix(in srgb, var(--accent) 18%, var(--rule));
}
.pyq-subject-row {
  display: grid; grid-template-columns: 45px minmax(90px, 1fr) minmax(70px, 1.5fr) auto;
  align-items: center; gap: 10px; padding: 9px 11px; border-radius: var(--radius-sm);
  color: var(--ink-2); background: color-mix(in srgb, var(--paper) 82%, var(--wash-2)); border: 1px solid transparent;
}
.pyq-subject-row:hover { color: var(--ink); text-decoration: none; border-color: var(--rule); background: var(--paper); }
.pyq-subject-code { color: var(--accent); font: 700 .68rem/1 var(--mono); }
.pyq-subject-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: .84rem; font-weight: 600; }
.pyq-subject-bar { height: 5px; overflow: hidden; border-radius: 99px; background: var(--wash); }
.pyq-subject-bar i { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--accent), var(--signal)); }
.pyq-subject-row > strong { min-width: 40px; text-align: right; color: var(--ink); font: 650 .73rem/1 var(--mono); }
@media (max-width: 700px) {
  .daily-challenge { grid-template-columns: minmax(0, 1fr) auto; padding: 19px; gap: 16px; }
  .daily-challenge-score { width: 102px; border-width: 7px; }
  .daily-challenge-stats, .challenge-week { grid-column: 1 / -1; }
  .challenge-week { justify-content: flex-start; }
  .pyq-progress-card { gap: 16px; padding: 19px; }
  .pyq-progress-ring { width: 102px; padding: 7px; }
  .pyq-progress-ring strong { font-size: 1.25rem; }
  .pyq-subject-progress { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .daily-challenge { grid-template-columns: 1fr; }
  .daily-challenge-score { grid-row: 1; width: 92px; }
  .daily-challenge-compact .daily-challenge-actions { align-items: flex-start; }
  .daily-challenge-actions { flex-wrap: wrap; }
  .pyq-progress-card { grid-template-columns: 1fr; }
  .pyq-progress-ring { grid-row: 1; width: 92px; }
  .pyq-progress-heading strong, .pyq-progress-detail h2 strong { font-size: 1.65rem; }
  .pyq-subject-row { grid-template-columns: 42px minmax(0, 1fr) auto; }
  .pyq-subject-bar { grid-column: 2 / -1; }
}

/* --------------------------------------------------------- focus mode
   One-question-at-a-time layer on top of practice_session.html's existing
   filtered list -- toggled entirely client-side (wireFocusMode() in
   app.js) over the same cards/data the list view already rendered, no
   separate route or re-fetch involved. */
.focus-bar { background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius); padding: 12px 16px; margin-bottom: 14px; }
.focus-bar-top { display: flex; align-items: center; gap: 12px; }
.focus-label {
  font-family: var(--mono); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--signal); font-weight: 600; white-space: nowrap;
}
.focus-count { font-family: var(--mono); font-size: .85rem; color: var(--ink-2); white-space: nowrap; }
.focus-spacer { flex: 1; }
.exit-btn {
  display: inline-flex; align-items: center; gap: 6px; font: 600 .82rem/1 var(--body);
  padding: 7px 12px; border-radius: var(--radius-sm); border: 1px solid var(--rule);
  background: var(--wash-2); color: var(--ink); cursor: pointer;
}
.exit-btn:hover { border-color: var(--signal); }
.focus-progress { height: 3px; background: var(--wash-2); border-radius: 2px; margin-top: 10px; overflow: hidden; }
.focus-progress-fill { height: 100%; background: var(--signal); border-radius: 2px; transition: width .2s ease; }
.dot-strip { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--rule); }
.dot {
  width: 22px; height: 22px; border-radius: 6px; border: 1px solid var(--rule);
  background: var(--wash-2); color: var(--ink-3);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-size: .64rem; font-weight: 600; cursor: pointer; flex: none;
}
.dot:hover { border-color: var(--signal); }
.dot.is-answered { background: var(--right); border-color: var(--right); color: #06210f; }
.dot.is-bookmarked { background: var(--purple); border-color: var(--purple); color: #1c1035; }
.dot.is-current { outline: 2px solid var(--signal); outline-offset: 1px; }
.stepper { display: flex; justify-content: space-between; align-items: center; }
.stepper[hidden] { display: none; }
/* On laptop and desktop, Focus Mode becomes a self-contained reading
   surface. The browser page itself cannot scroll; only a long question
   body can. This keeps the progress bar and Previous/Next controls visible
   without changing the current mobile behaviour. */
@media (min-width: 641px) {
  body.is-focus-mode { overflow: hidden; }
  .is-focus-mode .topbar, .is-focus-mode .quote-strip, .is-focus-mode .foot { display: none !important; }
  .is-focus-mode .page {
    height: 100vh; height: 100dvh; max-width: 1120px; padding: 20px;
    display: flex; flex-direction: column; overflow: hidden;
  }
  .is-focus-mode .focus-bar, .is-focus-mode .stepper { flex: none; }
  .is-focus-mode .qcard:not([hidden]) {
    flex: 1 1 auto; min-height: 0; display: flex; flex-direction: column; overflow: hidden;
  }
  .is-focus-mode .qcard:not([hidden]) .qcard-body { min-height: 0; overflow-y: auto; overscroll-behavior: contain; }
}
@media (max-width: 480px) {
  .focus-bar-top { flex-wrap: wrap; }
  .focus-spacer { display: none; }
}

/* ------------------------------------------------------------- syllabus */
.syllabus-layout { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 24px; align-items: start; }
.syllabus-panels { min-width: 0; }
.syllabus-rail {
  display: flex; flex-direction: column; gap: 2px;
  position: sticky; top: 16px;
  background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius);
  padding: 8px; max-height: calc(100vh - 32px); overflow-y: auto;
}
.rail-item {
  display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: var(--radius-sm);
  color: var(--ink-2); font-size: .88rem; border-left: 3px solid transparent;
}
.rail-item:hover { background: var(--wash-2); color: var(--ink); text-decoration: none; }
.rail-item.is-active { background: var(--wash-2); color: var(--ink); font-weight: 600; border-left-color: var(--rail-color, var(--accent)); }
.rail-icon {
  flex: none; width: 26px; height: 26px; border-radius: 7px; display: flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-size: .68rem; font-weight: 600; color: #fff;
}
.rail-icon-plain { background: var(--wash-2); color: var(--ink-2); }

.syllabus-panel { display: none; }
.syllabus-panel.is-active { display: block; }
.syllabus-table { table-layout: fixed; min-width: 640px; }
.syllabus-table td, .syllabus-table th { white-space: normal; }
.syllabus-table th { letter-spacing: normal; font-size: .66rem; }

.exam-fact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 22px; }
.qtype-card { border-left: 3px solid var(--signal); }
.qtype-card + .qtype-card { margin-top: 10px; }
.qtype-code {
  display: inline-flex; font-family: var(--mono); font-size: .72rem; font-weight: 600;
  padding: 3px 9px; border-radius: 6px; background: var(--tag-medium-bg); color: var(--signal); margin-bottom: 6px;
}

.psu-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }
.psu-card { display: flex; align-items: center; gap: 13px; padding: 13px 16px; transition: transform .15s ease, box-shadow .15s ease; }
.psu-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
/* same conic-gradient badge as .subject-icon, just circular and sized for a
   5-letter PSU code instead of a 2-3 letter subject code */
.psu-symbol { width: 50px; height: 50px; border-radius: 50%; font-size: .64rem; }

@media (max-width: 860px) {
  .syllabus-layout { grid-template-columns: 1fr; }
  .syllabus-rail {
    position: static; flex-direction: row; overflow-x: auto; overflow-y: hidden;
    max-height: none; max-width: 100%;
  }
  .rail-item { flex: none; border-left: none; border-bottom: 3px solid transparent; white-space: nowrap; }
  .rail-item.is-active { border-bottom-color: var(--rail-color, var(--accent)); }
}

.foot { max-width: 1080px; margin: 0 auto; padding: 26px 20px 40px; color: var(--ink-3); font-size: .84rem; border-top: 1px solid var(--rule); }

/* Fixed, always-on-screen -- feedback shouldn't require scrolling to the
   footer to notice. Bottom-right, out of the way of the mock-test exam bar
   (sticky top) and everything else that's fixed on this page. */
.feedback-fab {
  position: fixed; right: 20px; bottom: 20px; z-index: 40;
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--accent); color: var(--accent-ink);
  font: 600 .86rem/1 var(--body); padding: 12px 18px; border-radius: 999px;
  box-shadow: 0 8px 20px -6px rgba(0,0,0,.4);
  text-decoration: none; transition: transform .15s ease;
}
.feedback-fab:hover { transform: translateY(-2px); text-decoration: none; color: var(--accent-ink); }
.feedback-fab .navlink-icon { margin-right: 0; }
@media (max-width: 640px) {
  .feedback-fab span:last-child { display: none; }
  .feedback-fab { padding: 12px; }
  .feedback-fab .navlink-icon { margin: 0; }
}

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; gap: 26px; }
  .hero { padding: 24px; }
  .exam-layout { grid-template-columns: 1fr; }
  .palette { position: static; order: -1; }
  .topbar-row-top { padding: 10px 14px; gap: 8px; }
  .navuser { gap: 6px; font-size: .8rem; }
  .topbar-row-nav { padding: 0 14px 10px; }
  .wordmark-tagline { display: none; }
  .page { padding: 20px 14px 60px; }
}

/* On a true phone (not just a narrow tablet), reordering the palette above
   the question means scrolling past a 36-button grid before reading Q1 --
   worse than the tablet-width tradeoff the 860px rule above was written
   for. Natural document order (question, then palette) wins here. */
@media (max-width: 640px) {
  body.mobile-menu-open, body.mock-palette-open { overflow: hidden; }
  .topbar { min-height: 54px; }
  .topbar-row-top { min-height: 54px; padding: 8px 14px; justify-content: flex-start; }
  .topbar-row-nav { display: none; }
  .mobile-menu-toggle {
    display: inline-flex; flex-direction: column; justify-content: center; gap: 4px;
    width: 38px; height: 38px; padding: 9px; flex: none; border: 1px solid var(--rule);
    border-radius: 9px; background: var(--wash-2); color: var(--ink); cursor: pointer;
  }
  .mobile-menu-toggle span { display: block; width: 18px; height: 2px; border-radius: 2px; background: currentColor; }
  .wordmark::before { display: none; }
  .wordmark { margin-right: auto; }
  .wordmark-title { font-size: 1.06rem; }
  .navuser { flex: 0 0 auto; overflow: visible; }
  .navuser .tag, .navuser form, .navuser-name { display: none; }
  .navuser .theme-toggle { width: 34px; height: 34px; }
  .mobile-nav-scrim, .mock-palette-scrim {
    display: block; position: fixed; inset: 0; z-index: 79; opacity: 0;
    background: rgba(2, 8, 20, .64); transition: opacity .2s ease;
  }
  .mobile-nav-scrim[hidden], .mock-palette-scrim[hidden] { display: none; }
  .mobile-nav-scrim.is-open, .mock-palette-scrim.is-open { opacity: 1; }
  .mobile-nav-drawer {
    display: flex; flex-direction: column; position: fixed; z-index: 80; inset: 0 auto 0 0;
    width: min(82vw, 340px); padding: 18px 16px 16px; background: var(--paper);
    border-right: 1px solid var(--rule); box-shadow: 16px 0 36px rgba(0,0,0,.28);
    transform: translateX(-102%); transition: transform .22s ease;
  }
  .mobile-nav-drawer.is-open { transform: translateX(0); }
  .mobile-drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
  .mobile-drawer-brand { font-family: var(--display); font-size: 1.25rem; font-weight: 700; color: var(--ink); }
  .mobile-drawer-brand span { color: var(--accent); }
  .mobile-drawer-close, .mobile-palette-head button {
    width: 36px; height: 36px; border: 1px solid var(--rule); border-radius: 9px;
    color: var(--ink-2); background: var(--wash-2); font-size: 1.35rem; cursor: pointer;
  }
  .mobile-track-chip { width: fit-content; margin: 16px 0 14px; padding: 5px 10px; border-radius: 999px;
    background: var(--accent-dim); color: var(--accent); font: 600 .7rem/1 var(--mono); letter-spacing: .06em; }
  .mobile-drawer-links { display: grid; gap: 4px; }
  .mobile-drawer-links a { padding: 12px 13px; border-radius: 9px; color: var(--ink-2); font-weight: 500; }
  .mobile-drawer-links a:hover, .mobile-drawer-links a.is-active { background: var(--signal-dim); color: var(--signal); text-decoration: none; }
  .mobile-drawer-signout { margin-top: auto; padding-top: 14px; border-top: 1px solid var(--rule); }
  .mobile-drawer-signout button { width: 100%; padding: 11px 13px; border: 0; border-radius: 9px; background: transparent; color: var(--wrong); font: 500 .92rem var(--body); text-align: left; cursor: pointer; }

  /* Practice sessions are about the question, so the subject intro and its
     controls collapse into a short, horizontally scrollable control strip. */
  #practice-page-head .page-head { margin-bottom: 10px; }
  #practice-page-head .page-head .eyebrow, #practice-page-head .page-head .lede { display: none; }
  #practice-page-head h1 { margin: 0; font-size: 1.38rem; line-height: 1.22; }
  #practice-page-head .tabs { flex-wrap: nowrap; overflow-x: auto; margin: 12px 0 12px; scrollbar-width: none; }
  #practice-page-head .tabs::-webkit-scrollbar, .filterbar .seg-tabs::-webkit-scrollbar { display: none; }
  #practice-page-head .tab { flex: none; padding: 8px 10px; font-size: .82rem; white-space: nowrap; }
  .filterbar { display: grid; grid-template-columns: 1fr auto; gap: 8px; margin-bottom: 14px; }
  .filter-group { min-width: 0; display: block; }
  .filter-group:first-child { grid-column: 1 / -1; }
  .filter-group-label { display: none; }
  .filterbar .seg-tabs { display: flex; width: 100%; max-width: 100%; overflow-x: auto; padding: 3px; gap: 1px; scrollbar-width: none; }
  .filterbar .seg-tab { flex: none; padding: 7px 11px; font-size: .78rem; white-space: nowrap; }
  .pyq-toggle { align-self: end; min-height: 34px; padding: 7px 10px; font-size: .78rem; }
  .pyq-toggle svg { width: 13px; height: 13px; }

  .mock-mode-switcher { display: flex; width: 100%; }
  .mock-mode-tab { flex: 1; justify-content: center; padding-inline: 7px; font-size: .74rem; }
  .mock-mode-hero { align-items: stretch; padding: 16px; }
  .mock-mode-hero > .btn { width: 100%; }
  .mock-route-grid { grid-template-columns:1fr; margin-bottom:23px; }
  .mock-route-card { min-height:92px; }
  .mock-new-inline { padding-inline:9px; }
  .mock-list-card-layout { align-items: flex-start; }
  .mock-list-actions { width: 100%; justify-content: flex-start; margin-top: 4px; }
  .qcard-head { padding: 10px 14px; }
  .qcard-head-main { align-items: center; flex-direction: row; gap: 6px; }
  .qcard-actions { width: auto; margin-left: auto; justify-content: flex-end; gap: 0; }
  .qcard-action { min-height: 28px; padding: 5px 6px; font-size: .72rem; }
  .qcard-meta { gap: 5px; margin-top: 7px; }
  .qcard-meta.has-topic .subject-tag { display: none; }
  .qcard-meta .tag { padding: 4px 8px; font-size: .66rem; }
  .qcard-body { padding: 21px 16px 19px; }
  .qtext { font-size: 1.09rem; line-height: 1.72; margin-bottom: 22px; }
  .opts { gap: 11px; }
  .opt { min-height: 56px; padding: 13px 14px; font-size: 1rem; }
  .qcard-body > .row:has([data-check]) { align-items: stretch; flex-direction: column; }
  .qcard-body [data-check] { width: 100%; }
  .palette { order: 0; }
  .exam-bar-inner { min-height: 54px; padding: 8px 14px; gap: 8px; }
  .exam-title { font-size: .92rem; }
  .exam-bar .qmeta { display: none; }
  .exam-bar .clock { padding: 0; border: 0; background: transparent; font-size: .95rem; color: var(--signal); }
  .mock-palette-toggle { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; padding: 0; border: 1px solid var(--rule); border-radius: 9px; background: var(--wash-2); color: var(--signal); font-size: 1.25rem; }
  .exam-bar .fullscreen-toggle { display: none; }
  .exam-layout { display: block; padding-bottom: 82px; }
  .exam-layout > .palette {
    display: flex; flex-direction: column; position: fixed; z-index: 80; inset: 0 auto 0 0;
    width: min(82vw, 340px); margin: 0; padding: 18px 16px; border: 0; border-right: 1px solid var(--rule);
    border-radius: 0; box-shadow: 16px 0 36px rgba(0,0,0,.28); transform: translateX(-102%);
    transition: transform .22s ease; overflow-y: auto;
  }
  .exam-layout > .palette.is-open { transform: translateX(0); }
  .mobile-palette-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
  .mobile-palette-head .eyebrow { margin: 0; }
  .palette-grid { gap: 8px; }
  .pbtn { width: 38px; height: 38px; }
  .exam-nav {
    position: fixed; z-index: 35; inset: auto 0 0; margin: 0; padding: 10px 14px calc(10px + env(safe-area-inset-bottom));
    display: grid; grid-template-columns: auto auto minmax(0,1fr); gap: 8px; background: var(--paper); border-top: 1px solid var(--rule);
  }
  .exam-nav #clear { display: none; }
  .exam-nav .btn { min-height: 44px; padding-inline: 10px; font-size: .8rem; white-space: nowrap; }
  .exam-nav #next { min-width: 0; }
  .exam-layout .qcard-head .tag, .exam-layout .qcard-head [data-bookmark], .exam-layout .qcard-head [data-report] { display: none; }
  .exam-layout .qcard-head { min-height: 48px; }

  .is-focus-mode .topbar, .is-focus-mode .quote-strip, .is-focus-mode .foot { display: none !important; }
  .is-focus-mode .page { padding: 0 14px 88px; }
  .is-focus-mode .focus-bar { position: sticky; top: 0; z-index: 34; margin: 0 -14px 14px; padding: 10px 14px; border-width: 0 0 1px; border-radius: 0; }
  .is-focus-mode .focus-bar-top { gap: 8px; }
  .is-focus-mode .focus-label { font-size: .66rem; }
  .is-focus-mode .focus-count { font-size: .82rem; }
  .is-focus-mode .fullscreen-toggle { display: none; }
  .is-focus-mode .exit-btn { padding: 7px 9px; font-size: .76rem; }
  .is-focus-mode .dot-strip { display: none; }
  .is-focus-mode .qcard { border-radius: 10px; }
  .is-focus-mode .qcard-head .tag, .is-focus-mode .qcard-head .bookmark-btn, .is-focus-mode .qcard-head [data-report] { display: none; }
  .is-focus-mode .stepper {
    position: fixed; z-index: 35; inset: auto 0 0; margin: 0; padding: 10px 14px calc(10px + env(safe-area-inset-bottom)) !important;
    background: var(--paper); border-top: 1px solid var(--rule); display: grid !important; grid-template-columns: 1fr 1fr; gap: 8px;
  }
  .is-focus-mode .stepper .btn { min-height: 44px; padding-inline: 10px; }
  .mock-row { flex-wrap: wrap; align-items: flex-start; padding-left: 16px; }
  .mock-row-icon { display: none; }
  .mock-row-main { flex-basis: 100%; }
  .mock-row-actions { flex-basis: 100%; justify-content: flex-start; margin-top: 4px; }
}

@media (max-width: 480px) {
  .navuser .tag-year { display: none; }
  .navuser-name { display: none; }
  .wordmark-title { font-size: 1rem; }
  .stat-value { font-size: 1.4rem; }
  h1 { font-size: 1.6rem; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}