/* ============================================================
   CRUCIBLE — competitive programming coach
   styles.css — full visual system
   ============================================================ */

/* -------- Reset + tokens -------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }

/* The browser default [hidden] { display: none } can be overridden by later
   display rules with higher specificity. Re-assert it for our floating layers. */
[hidden] { display: none !important; }
body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-feature-settings: "ss01", "cv02", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  overflow-x: hidden;
}

:root, [data-theme="dark"] {
  --bg: #07090f;
  --bg-grad-1: rgba(99, 102, 241, 0.10);
  --bg-grad-2: rgba(139, 92, 246, 0.06);
  --surface: #0d1220;
  --surface-2: #121a2e;
  --surface-3: #1a2340;
  --surface-hover: #1e2747;
  --border: #1e2741;
  --border-strong: #2a3458;
  --border-soft: #161d33;

  --text: #e8ecf6;
  --text-2: #a7b2cf;
  --text-3: #6e7a99;
  --text-4: #4d5777;

  --accent: #6366f1;
  --accent-2: #8b5cf6;
  --accent-3: #a78bfa;
  --accent-glow: rgba(99, 102, 241, 0.35);

  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.12);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.12);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.12);
  --info: #06b6d4;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.30);
  --shadow-md: 0 6px 20px -4px rgba(0,0,0,0.45);
  --shadow-lg: 0 20px 40px -10px rgba(0,0,0,0.55);
  --shadow-glow: 0 0 0 1px rgba(99,102,241,0.35), 0 12px 36px -8px rgba(99,102,241,0.30);

  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;

  --mono: 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;
  --serif: 'Instrument Serif', Georgia, serif;

  /* Codeforces-style rating colors */
  --r-newbie:   #9aa1b3;
  --r-pupil:    #4ade80;
  --r-spec:     #22d3ee;
  --r-expert:   #60a5fa;
  --r-cm:       #c084fc;
  --r-master:   #fbbf24;
  --r-im:       #fb923c;
  --r-gm:       #f87171;
  --r-lgm:      #ef4444;
}

[data-theme="light"] {
  --bg: #f7f8fc;
  --surface: #ffffff;
  --surface-2: #f1f3fa;
  --surface-3: #e6eaf4;
  --surface-hover: #eef1f8;
  --border: #e2e6f0;
  --border-strong: #c9d0e0;
  --border-soft: #eef0f7;
  --text: #0e1426;
  --text-2: #475078;
  --text-3: #6b7493;
  --text-4: #8a93b1;
  --bg-grad-1: rgba(99, 102, 241, 0.08);
  --bg-grad-2: rgba(139, 92, 246, 0.04);
}

/* -------- Scrollbars -------- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 10px;
  border: 2px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover { background: var(--text-4); }

/* -------- Selection -------- */
::selection { background: var(--accent); color: white; }

/* -------- Layout shell -------- */
.app {
  display: grid;
  grid-template-columns: 264px 1fr;
  min-height: 100vh;
}
.app[data-collapsed="true"] { grid-template-columns: 72px 1fr; }

@media (max-width: 900px) {
  .app, .app[data-collapsed="true"] { grid-template-columns: 1fr; }
  .sidebar { position: fixed; top: 0; left: 0; bottom: 0; z-index: 50; transform: translateX(-100%); transition: transform .25s ease; box-shadow: var(--shadow-lg); }
  .app[data-mobile-open="true"] .sidebar { transform: translateX(0); }
}

/* -------- Sidebar -------- */
.sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 18px 14px 14px;
  gap: 16px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
}
.sidebar__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 8px 14px;
  border-bottom: 1px solid var(--border-soft);
}
.brand-mark { display: grid; place-items: center; flex-shrink: 0; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; overflow: hidden; }
.brand-name {
  font-weight: 700; font-size: 16px; letter-spacing: -0.02em;
  background: linear-gradient(135deg, #c7d2fe 0%, #e9d5ff 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.brand-tag { font-size: 11px; color: var(--text-3); font-weight: 500; margin-top: 2px; }

.app[data-collapsed="true"] .brand-text,
.app[data-collapsed="true"] .nav__label,
.app[data-collapsed="true"] .nav__item span:not(.nav__count),
.app[data-collapsed="true"] .nav__count,
.app[data-collapsed="true"] .rating-card { display: none; }
.app[data-collapsed="true"] .nav__item { justify-content: center; padding: 10px 0; }
.app[data-collapsed="true"] .sidebar__bottom { display: none; }

.nav { display: flex; flex-direction: column; gap: 18px; flex: 1; overflow-y: auto; padding-bottom: 12px; }
.nav__group { display: flex; flex-direction: column; gap: 2px; }
.nav__label {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--text-4); padding: 4px 10px 6px; font-weight: 600;
}
.nav__item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; border-radius: var(--radius);
  color: var(--text-2); text-decoration: none; font-size: 14px; font-weight: 500;
  transition: background .15s ease, color .15s ease;
  position: relative;
}
.nav__item:hover { background: var(--surface-2); color: var(--text); }
.nav__item.is-active {
  background: linear-gradient(135deg, rgba(99,102,241,0.16), rgba(139,92,246,0.10));
  color: white;
  box-shadow: inset 0 0 0 1px rgba(99,102,241,0.25);
}
.nav__item.is-active::before {
  content: ""; position: absolute; left: -14px; top: 50%; transform: translateY(-50%);
  width: 3px; height: 18px; background: linear-gradient(180deg, var(--accent), var(--accent-2));
  border-radius: 0 3px 3px 0;
}
.nav__item .i { width: 18px; height: 18px; flex-shrink: 0; }
.nav__count {
  margin-left: auto; font-size: 11px; padding: 2px 7px; border-radius: 99px;
  background: var(--surface-3); color: var(--text-3); font-weight: 600;
}

.sidebar__bottom { padding-top: 8px; border-top: 1px solid var(--border-soft); }
.rating-card {
  padding: 12px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(99,102,241,0.10), rgba(139,92,246,0.05));
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.rating-card::after {
  content: ""; position: absolute; top: -40px; right: -40px;
  width: 100px; height: 100px; border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow), transparent 70%);
  pointer-events: none;
}
.rating-card__head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 4px; }
.rating-card__label { font-size: 11px; color: var(--text-3); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; }
.rating-card__delta { font-size: 11px; font-weight: 600; color: var(--success); }
.rating-card__delta.neg { color: var(--danger); }
.rating-card__value {
  font-family: var(--mono); font-size: 26px; font-weight: 700;
  letter-spacing: -0.02em; line-height: 1; margin: 4px 0;
}
.rating-card__bar {
  height: 4px; border-radius: 2px;
  background: var(--surface-3); overflow: hidden; margin: 8px 0 6px;
}
.rating-card__fill {
  height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 2px; transition: width .5s cubic-bezier(.4,.0,.2,1);
}
.rating-card__band { font-size: 12px; color: var(--text-2); font-weight: 500; }

/* -------- Main + topbar -------- */
.main { min-width: 0; display: flex; flex-direction: column; }
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 14px;
  padding: 12px 24px;
  background: rgba(13, 18, 32, 0.72);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--border-soft);
}
[data-theme="light"] .topbar { background: rgba(255,255,255,0.78); }
.topbar__crumb { font-size: 14px; font-weight: 600; color: var(--text); }
.topbar__spacer { flex: 1; }
.topbar__search {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px; border-radius: var(--radius);
  background: var(--surface-2); border: 1px solid var(--border);
  width: clamp(220px, 32vw, 420px); transition: border-color .15s ease, box-shadow .15s ease;
}
.topbar__search:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(99,102,241,0.15); }
.topbar__search input {
  background: transparent; border: 0; outline: 0; flex: 1;
  color: var(--text); font: inherit; font-size: 13px;
}
.topbar__search input::placeholder { color: var(--text-4); }
.topbar__search .i { width: 16px; height: 16px; color: var(--text-3); }
.topbar__search kbd {
  font-family: var(--mono); font-size: 10px; padding: 2px 6px;
  background: var(--surface-3); border: 1px solid var(--border-strong);
  border-radius: 4px; color: var(--text-3);
}
.topbar__actions { display: flex; gap: 6px; }

.iconbtn {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 8px; border-radius: var(--radius);
  background: var(--surface-2); border: 1px solid var(--border);
  color: var(--text-2); cursor: pointer; font: inherit;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.iconbtn:hover { background: var(--surface-hover); color: var(--text); border-color: var(--border-strong); }
.iconbtn .i { width: 16px; height: 16px; }
.iconbtn span { font-size: 12px; font-weight: 600; padding: 0 4px; }
.topbar__toggle { display: none; }
@media (max-width: 900px) { .topbar__toggle { display: inline-flex; } }

/* -------- Views -------- */
.views { padding: 24px 24px 80px; max-width: 1400px; width: 100%; margin: 0 auto; }
.view { display: flex; flex-direction: column; gap: 24px; animation: viewIn .25s ease; }
@keyframes viewIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.viewhead { display: flex; flex-direction: column; gap: 6px; }
.viewhead__title { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; margin: 0; }
.viewhead__sub { color: var(--text-2); font-size: 15px; max-width: 720px; line-height: 1.55; margin: 0; }

/* -------- Buttons -------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 16px; border-radius: var(--radius);
  border: 1px solid transparent;
  font: inherit; font-size: 14px; font-weight: 600;
  cursor: pointer; user-select: none;
  transition: transform .12s ease, background .15s ease, border-color .15s ease, box-shadow .15s ease, color .15s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn .i { width: 16px; height: 16px; }
.btn--primary {
  color: white;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 1px 0 rgba(255,255,255,0.20) inset, 0 8px 22px -8px rgba(99,102,241,0.55);
}
.btn--primary:hover { box-shadow: 0 1px 0 rgba(255,255,255,0.20) inset, 0 12px 28px -8px rgba(99,102,241,0.7); }
.btn--ghost {
  background: var(--surface-2); border-color: var(--border-strong); color: var(--text);
}
.btn--ghost:hover { background: var(--surface-hover); border-color: var(--accent); }
.btn--danger {
  background: var(--danger-bg); color: var(--danger); border-color: rgba(239, 68, 68, 0.30);
}
.btn--danger:hover { background: rgba(239, 68, 68, 0.20); }
.btn--sm { padding: 7px 12px; font-size: 13px; }
.btn--success { background: var(--success-bg); color: var(--success); border-color: rgba(16, 185, 129, 0.30); }
.btn--success:hover { background: rgba(16, 185, 129, 0.22); }

/* -------- Cards -------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex; flex-direction: column; gap: 14px;
  position: relative;
  overflow: hidden;
}
.card--padless { padding: 0; }
.card--padless .card__head { padding: 16px 18px; border-bottom: 1px solid var(--border-soft); }
.card__head { display: flex; flex-direction: column; gap: 2px; }
.card__head--row { flex-direction: row; align-items: center; justify-content: space-between; gap: 12px; }
.card__head--live::after {
  content: "LIVE"; margin-left: auto; padding: 3px 8px; font-size: 10px; font-weight: 700;
  letter-spacing: 0.08em; background: var(--danger-bg); color: var(--danger);
  border-radius: 4px; border: 1px solid rgba(239,68,68,0.30);
}
.card__title { font-size: 16px; font-weight: 600; margin: 0; }
.card__sub { font-size: 13px; color: var(--text-3); }
.card__foot { display: flex; gap: 8px; padding-top: 4px; }

.grid { display: grid; gap: 20px; }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 1100px) { .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 800px) { .grid--2, .grid--3 { grid-template-columns: 1fr; } }

/* -------- Hero -------- */
.hero {
  position: relative;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--surface) 0%, var(--surface-2) 100%);
  border: 1px solid var(--border);
  padding: 36px 36px 28px;
  overflow: hidden;
  isolation: isolate;
}
.hero__bg { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.hero__glow {
  position: absolute; top: -120px; right: -100px; width: 480px; height: 480px;
  background: radial-gradient(closest-side, rgba(99,102,241,0.30), transparent);
  filter: blur(20px);
}
.hero__grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--border-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-soft) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 30%, #000 0%, transparent 70%);
  opacity: 0.3;
}
.kicker {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 12px; border-radius: 99px;
  background: var(--surface-3); border: 1px solid var(--border);
  font-size: 12px; color: var(--text-2); font-weight: 500;
}
.kicker .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--success); box-shadow: 0 0 12px var(--success);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}
.hero__title {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(36px, 5vw, 56px);
  letter-spacing: -0.02em; line-height: 1.05;
  margin: 16px 0 12px;
}
.hero__title .grad {
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 60%, #fb923c 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  font-style: italic;
}
.hero__sub { color: var(--text-2); font-size: 16px; max-width: 620px; line-height: 1.55; margin: 0 0 22px; }
.hero__cta { display: flex; gap: 10px; flex-wrap: wrap; }
.hero__stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin: 28px -36px -28px;
  padding: 18px 36px;
  border-top: 1px solid var(--border-soft);
  background: linear-gradient(180deg, transparent, rgba(0,0,0,0.10));
}
@media (max-width: 700px) { .hero__stats { grid-template-columns: repeat(2, 1fr); } }
.stat { display: flex; flex-direction: column; gap: 2px; padding: 4px 0; border-left: 1px solid var(--border-soft); padding-left: 18px; }
.stat:first-child { border-left: 0; padding-left: 0; }
.stat__label { font-size: 11px; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.06em; font-weight: 600; }
.stat__value { font-family: var(--mono); font-size: 28px; font-weight: 700; letter-spacing: -0.02em; line-height: 1.1; }
.stat__hint { font-size: 12px; color: var(--text-3); }

/* -------- Mastery map -------- */
.masterymap { display: flex; flex-direction: column; gap: 8px; }
.masterymap__row { display: grid; grid-template-columns: 140px 1fr 56px; gap: 12px; align-items: center; padding: 4px 0; }
.masterymap__topic { font-size: 13px; color: var(--text-2); font-weight: 500; }
.masterymap__bar { height: 8px; border-radius: 4px; background: var(--surface-2); overflow: hidden; position: relative; }
.masterymap__fill { height: 100%; border-radius: 4px; transition: width .6s cubic-bezier(.4,0,.2,1); }
.masterymap__pct { font-family: var(--mono); font-size: 12px; color: var(--text-3); text-align: right; font-weight: 600; }
.fill-low { background: linear-gradient(90deg, #ef4444, #f97316); }
.fill-mid { background: linear-gradient(90deg, #f59e0b, #fbbf24); }
.fill-good { background: linear-gradient(90deg, #10b981, #22c55e); }
.fill-great { background: linear-gradient(90deg, #6366f1, #8b5cf6); }

/* -------- Plan -------- */
.plan { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; counter-reset: planc; }
.plan__item {
  display: grid; grid-template-columns: 32px 1fr auto; gap: 12px; align-items: center;
  padding: 12px; border-radius: var(--radius);
  background: var(--surface-2); border: 1px solid var(--border-soft);
  transition: background .15s ease, border-color .15s ease;
}
.plan__item:hover { background: var(--surface-hover); border-color: var(--border-strong); }
.plan__num {
  display: grid; place-items: center;
  width: 28px; height: 28px; border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  font-family: var(--mono); font-weight: 700; font-size: 13px; color: white;
}
.plan__body { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.plan__title { font-size: 14px; font-weight: 600; color: var(--text); }
.plan__desc { font-size: 12px; color: var(--text-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.plan__time { font-family: var(--mono); font-size: 12px; color: var(--text-3); font-weight: 600; }

/* -------- Problem list (sidebar mini) -------- */
.problemlist { display: flex; flex-direction: column; gap: 6px; }
.problemlist__row {
  display: grid; grid-template-columns: 1fr auto auto; gap: 10px; align-items: center;
  padding: 10px 12px; border-radius: var(--radius);
  background: var(--surface-2); border: 1px solid var(--border-soft);
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease;
}
.problemlist__row:hover { background: var(--surface-hover); border-color: var(--border-strong); }
.problemlist__name { font-size: 13px; font-weight: 600; color: var(--text); display: flex; align-items: center; gap: 6px; min-width: 0; }
.problemlist__name span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.problemlist__src { font-size: 11px; color: var(--text-3); font-weight: 500; padding: 2px 6px; background: var(--surface-3); border-radius: 4px; }

/* -------- Heatmap -------- */
.heatmap {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 4px;
}
.heatmap__col { display: grid; grid-template-rows: repeat(7, 1fr); gap: 4px; }
.heatmap__cell {
  aspect-ratio: 1;
  border-radius: 3px;
  background: var(--surface-2);
  border: 1px solid var(--border-soft);
  transition: transform .15s ease;
  cursor: default;
}
.heatmap__cell:hover { transform: scale(1.25); z-index: 1; }
.heatmap__cell[data-l="1"] { background: rgba(99,102,241,0.20); border-color: rgba(99,102,241,0.30); }
.heatmap__cell[data-l="2"] { background: rgba(99,102,241,0.40); border-color: rgba(99,102,241,0.50); }
.heatmap__cell[data-l="3"] { background: rgba(99,102,241,0.65); border-color: rgba(99,102,241,0.70); }
.heatmap__cell[data-l="4"] { background: rgba(99,102,241,0.90); border-color: rgba(139,92,246,0.90); }
.heatmap__legend {
  display: flex; align-items: center; gap: 8px;
  font-size: 11px; color: var(--text-3); margin-top: 12px; justify-content: flex-end;
}
.heatmap__legendcells { display: flex; gap: 3px; }
.heatmap__legendcells i { width: 12px; height: 12px; border-radius: 3px; display: block; background: var(--surface-2); border: 1px solid var(--border-soft); }
.heatmap__legendcells i[data-l="1"] { background: rgba(99,102,241,0.20); }
.heatmap__legendcells i[data-l="2"] { background: rgba(99,102,241,0.40); }
.heatmap__legendcells i[data-l="3"] { background: rgba(99,102,241,0.65); }
.heatmap__legendcells i[data-l="4"] { background: rgba(99,102,241,0.90); }

/* -------- Roadmap -------- */
.roadmap {
  display: flex; flex-direction: column; gap: 28px;
}
.roadmap__division {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 24px;
  position: relative;
}
@media (max-width: 800px) { .roadmap__division { grid-template-columns: 1fr; } }
.roadmap__divhead {
  display: flex; flex-direction: column; gap: 4px;
  position: sticky; top: 96px; align-self: start;
}
.roadmap__divtag {
  font-family: var(--mono); font-size: 11px; font-weight: 700; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--text-3);
}
.roadmap__divname { font-size: 22px; font-weight: 700; letter-spacing: -0.01em; }
.roadmap__divrating { font-family: var(--mono); font-size: 13px; color: var(--text-2); margin-top: 2px; }
.roadmap__divdesc { font-size: 13px; color: var(--text-3); line-height: 1.55; margin-top: 8px; }

.roadmap__nodes {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px;
}
.rmnode {
  padding: 14px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 8px;
  cursor: pointer; transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease;
  position: relative; overflow: hidden;
}
.rmnode:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
}
.rmnode__top { display: flex; align-items: center; gap: 8px; }
.rmnode__title { font-size: 14px; font-weight: 600; color: var(--text); margin: 0; }
.rmnode__ico {
  width: 32px; height: 32px; border-radius: 8px; display: grid; place-items: center;
  background: var(--surface-2); color: var(--accent-3);
}
.rmnode__ico .i { width: 16px; height: 16px; }
.rmnode__desc { font-size: 12px; color: var(--text-3); line-height: 1.5; }
.rmnode__tags { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 4px; }
.rmnode__progbar { height: 4px; border-radius: 2px; background: var(--surface-3); margin-top: auto; overflow: hidden; }
.rmnode__progfill { height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); border-radius: 2px; }

.tag {
  font-size: 10px; padding: 2px 7px; border-radius: 4px;
  background: var(--surface-3); color: var(--text-2);
  border: 1px solid var(--border); font-weight: 500;
}
.tag--accent { background: rgba(99,102,241,0.15); color: var(--accent-3); border-color: rgba(99,102,241,0.30); }
.tag--good { background: var(--success-bg); color: var(--success); border-color: rgba(16,185,129,0.30); }
.tag--warn { background: var(--warning-bg); color: var(--warning); border-color: rgba(245,158,11,0.30); }
.tag--danger { background: var(--danger-bg); color: var(--danger); border-color: rgba(239,68,68,0.30); }

.prose { color: var(--text-2); font-size: 14px; line-height: 1.65; max-width: 720px; margin: 0; }
.prose strong { color: var(--text); }
.prose code { font-family: var(--mono); font-size: 0.9em; padding: 1px 6px; border-radius: 4px; background: var(--surface-3); border: 1px solid var(--border); color: var(--text); }

/* -------- Filters & chips -------- */
.filters {
  display: flex; gap: 8px; flex-wrap: wrap;
  padding: 10px 0;
}
.chip {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 5px 12px; border-radius: 99px;
  background: var(--surface-2); border: 1px solid var(--border);
  color: var(--text-2); font-size: 12px; font-weight: 500;
  cursor: pointer; font-family: inherit;
  transition: all .15s ease;
}
.chip:hover { background: var(--surface-hover); color: var(--text); border-color: var(--border-strong); }
.chip.is-active {
  background: linear-gradient(135deg, rgba(99,102,241,0.18), rgba(139,92,246,0.10));
  color: white;
  border-color: rgba(99,102,241,0.40);
}
.chipset { display: flex; gap: 6px; flex-wrap: wrap; }
.chipset--scroll { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 4px; max-width: 100%; }

/* -------- Lessons -------- */
.lessongrid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px;
}
.lessoncard {
  padding: 20px; border-radius: var(--radius-lg);
  background: var(--surface); border: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 12px;
  cursor: pointer;
  position: relative; overflow: hidden;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.lessoncard:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
}
.lessoncard::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(0); transform-origin: left; transition: transform .25s ease;
}
.lessoncard:hover::before { transform: scaleX(1); }
.lessoncard__div { font-family: var(--mono); font-size: 11px; color: var(--text-3); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; }
.lessoncard__title { font-size: 18px; font-weight: 600; letter-spacing: -0.01em; margin: 0; }
.lessoncard__desc { font-size: 13px; color: var(--text-2); line-height: 1.55; flex: 1; }
.lessoncard__foot { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }

.lessonview {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 32px;
  display: flex; flex-direction: column; gap: 20px;
}
.lessonview__head { display: flex; flex-direction: column; gap: 6px; padding-bottom: 16px; border-bottom: 1px solid var(--border-soft); }
.lessonview__back {
  align-self: flex-start; display: inline-flex; align-items: center; gap: 6px;
  background: transparent; border: 0; color: var(--text-3); font: inherit; font-size: 13px; cursor: pointer; padding: 0; margin-bottom: 8px;
}
.lessonview__back:hover { color: var(--accent-3); }
.lessonview__title { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; margin: 0; }
.lessonview__meta { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.lessonview h3 { font-size: 18px; font-weight: 600; margin: 4px 0 0; letter-spacing: -0.01em; }
.lessonview p { color: var(--text-2); font-size: 15px; line-height: 1.7; margin: 0; }
.lessonview ul { color: var(--text-2); font-size: 15px; line-height: 1.7; margin: 0; padding-left: 20px; }
.lessonview ul li { margin-bottom: 4px; }

/* -------- Code blocks -------- */
.codeblock {
  position: relative;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  background: #0c0e16;
}
.codeblock__head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 14px;
  border-bottom: 1px solid var(--border-soft);
  background: var(--surface-2);
}
.codeblock__lang {
  font-family: var(--mono); font-size: 11px; font-weight: 600;
  color: var(--text-3); letter-spacing: 0.04em; text-transform: uppercase;
  display: flex; align-items: center; gap: 6px;
}
.codeblock__lang::before {
  content: ""; display: block; width: 8px; height: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 50%;
}
.codeblock__copy {
  background: transparent; border: 0; color: var(--text-3); cursor: pointer;
  font: inherit; font-size: 12px; padding: 4px 8px; border-radius: 4px;
  transition: color .15s ease, background .15s ease;
}
.codeblock__copy:hover { background: var(--surface-3); color: var(--text); }
.codeblock pre { margin: 0; padding: 16px 18px; font-family: var(--mono); font-size: 13px; line-height: 1.6; overflow-x: auto; background: transparent; }
.codeblock code { font-family: var(--mono); }

.callout {
  padding: 14px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface-2);
  display: grid; grid-template-columns: 24px 1fr; gap: 12px; align-items: start;
}
.callout__ico { width: 24px; height: 24px; display: grid; place-items: center; }
.callout__ico .i { width: 16px; height: 16px; }
.callout p { font-size: 14px; line-height: 1.55; color: var(--text-2); margin: 0; }
.callout--warn { background: var(--warning-bg); border-color: rgba(245,158,11,0.30); }
.callout--warn .callout__ico { color: var(--warning); }
.callout--info { background: rgba(6,182,212,0.10); border-color: rgba(6,182,212,0.30); }
.callout--info .callout__ico { color: var(--info); }
.callout--tip { background: var(--success-bg); border-color: rgba(16,185,129,0.30); }
.callout--tip .callout__ico { color: var(--success); }
.callout--danger { background: var(--danger-bg); border-color: rgba(239,68,68,0.30); }
.callout--danger .callout__ico { color: var(--danger); }

/* -------- Syntax tutor -------- */
.syntaxlayout {
  display: grid; grid-template-columns: 280px 1fr; gap: 20px;
}
@media (max-width: 900px) { .syntaxlayout { grid-template-columns: 1fr; } }
.syntaxlist { display: flex; flex-direction: column; max-height: 600px; overflow-y: auto; }
.syntaxlist__group { padding: 10px 0; }
.syntaxlist__grouphead {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--text-4); font-weight: 600; padding: 4px 18px; margin-top: 4px;
}
.syntaxlist__item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 18px;
  cursor: pointer;
  border-left: 3px solid transparent;
  transition: background .15s ease, border-color .15s ease, color .15s ease;
  color: var(--text-2);
  font-size: 13px;
}
.syntaxlist__item:hover { background: var(--surface-2); color: var(--text); }
.syntaxlist__item.is-active {
  background: linear-gradient(90deg, rgba(99,102,241,0.10), transparent);
  border-left-color: var(--accent);
  color: var(--text);
  font-weight: 600;
}
.syntaxlist__dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--surface-3); border: 1px solid var(--border-strong);
  flex-shrink: 0;
}
.syntaxlist__dot.is-learned { background: var(--success); border-color: var(--success); box-shadow: 0 0 8px rgba(16,185,129,0.50); }
.syntaxlist__dot.is-shaky { background: var(--warning); border-color: var(--warning); }

.syntaxlayout__main {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 28px;
  display: flex; flex-direction: column; gap: 18px;
  min-height: 600px;
}
.syntaxhead { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; padding-bottom: 14px; border-bottom: 1px solid var(--border-soft); }
.syntaxhead__title { font-size: 22px; font-weight: 700; letter-spacing: -0.01em; margin: 0; flex: 1; min-width: 0; }
.syntax-actions { display: flex; gap: 6px; }

.drillpane {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  display: flex; flex-direction: column; gap: 12px;
}
.drillpane__head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.drillpane__title { font-size: 14px; font-weight: 600; }
.drillpane textarea {
  width: 100%;
  min-height: 160px;
  background: #0c0e16;
  color: #e8ecf6;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.6;
  resize: vertical;
  outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.drillpane textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(99,102,241,0.15); }
.drillpane__actions { display: flex; gap: 8px; align-items: center; }
.drillpane__feedback {
  font-size: 13px; padding: 10px 14px; border-radius: var(--radius);
  display: none;
}
.drillpane__feedback.show { display: block; }
.drillpane__feedback.ok { background: var(--success-bg); color: var(--success); border: 1px solid rgba(16,185,129,0.30); }
.drillpane__feedback.bad { background: var(--danger-bg); color: var(--danger); border: 1px solid rgba(239,68,68,0.30); }

/* -------- Typing target (Monkeytype-style) -------- */
.typer {
  position: relative;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: #0c0e16;
  outline: none;
  cursor: text;
  display: flex; flex-direction: column;
  overflow: hidden;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.typer:hover { border-color: var(--border-strong); }
.typer.is-focused { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(99,102,241,0.18); }
.typer__bar {
  display: flex; align-items: center; gap: 12px;
  padding: 8px 14px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border-soft);
  font-size: 12px;
}
.typer__lang {
  font-family: var(--mono); font-size: 11px; font-weight: 600;
  color: var(--text-3); letter-spacing: 0.04em; text-transform: uppercase;
  display: flex; align-items: center; gap: 6px;
}
.typer__lang::before {
  content: ""; display: block; width: 8px; height: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 50%;
}
.typer__prompt { color: var(--text-3); font-style: italic; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.typer.is-focused .typer__prompt { color: var(--accent-3); }
.typer__stats { display: flex; gap: 10px; font-family: var(--mono); }
.typer__stat {
  font-size: 11px; padding: 3px 8px; border-radius: 4px;
  background: var(--surface-3); color: var(--text-2);
  font-weight: 600;
}
.typer__stat.is-bad { color: var(--danger); }
.typer__actions { display: flex; gap: 4px; }
.typer__actions .btn { padding: 4px 8px; }
.typer__actions .btn .i { width: 14px; height: 14px; }

.typer__code {
  margin: 0;
  padding: 18px 22px;
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-4);
  white-space: pre-wrap;
  overflow-x: auto;
  max-height: 460px;
  overflow-y: auto;
  user-select: none;
}
.tch { transition: color .05s ease, background .05s ease; position: relative; }
.tch.is-correct { color: var(--text); }
.tch.is-wrong { color: var(--danger); background: rgba(239,68,68,0.18); border-radius: 2px; }
.tch.is-caret::before {
  content: ""; position: absolute; left: -1px; top: 0; bottom: 0;
  width: 2px; background: var(--accent-3);
  animation: typerBlink .9s ease-in-out infinite;
  border-radius: 1px;
}
.tch--nl { color: var(--text-4); opacity: 0.5; }
.tch--nl.is-correct { color: var(--text-3); opacity: 1; }
.tch--space { color: transparent; }
@keyframes typerBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.2; }
}
.typer.is-done .typer__code { opacity: 0.4; pointer-events: none; }
.typer__done {
  display: grid; grid-template-columns: repeat(3, 1fr) auto;
  gap: 14px; align-items: center;
  padding: 18px 22px;
  border-top: 1px solid var(--border-soft);
  background: linear-gradient(180deg, transparent, rgba(99,102,241,0.06));
}
.typer__done-stat {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  font-family: var(--mono);
}
.typer__done-stat span { font-size: 26px; font-weight: 700; letter-spacing: -0.02em; color: var(--accent-3); }
.typer__done-stat small { font-size: 10px; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.06em; font-weight: 600; }
.typer__done-actions { display: flex; gap: 8px; }

/* -------- Claude original problems & judge -------- */
.claude-pill {
  font-size: 10px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
  padding: 2px 8px; border-radius: 4px; margin-left: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
}
.claude-pill--alt {
  background: var(--surface-3); color: var(--text-3);
  font-weight: 600;
}
.claude-statement { gap: 12px; }
.claude-card {
  background: linear-gradient(180deg, rgba(99,102,241,0.06), transparent);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  padding: 16px 20px;
  border-radius: var(--radius);
  display: flex; flex-direction: column; gap: 10px;
}
.claude-card .prose { font-size: 14px; line-height: 1.65; }
.claude-card h4 {
  font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--text-3); margin: 4px 0 0;
}
.claude-pre {
  font-family: var(--mono); font-size: 13px; line-height: 1.55;
  background: #0c0e16; color: var(--text);
  padding: 10px 12px; border-radius: 6px;
  border: 1px solid var(--border-soft);
  white-space: pre-wrap; word-break: break-word;
  margin: 0;
}
.claude-codebox {
  width: 100%;
  min-height: 160px;
  background: #0c0e16;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.6;
  resize: vertical;
  outline: none;
}
.claude-codebox:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(99,102,241,0.15); }

.claude-tests { display: flex; flex-direction: column; gap: 10px; }
.claude-test {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-2);
  overflow: hidden;
}
.claude-test__head {
  display: flex; align-items: center; gap: 12px;
  padding: 8px 14px;
  background: var(--surface-3);
  border-bottom: 1px solid var(--border-soft);
  font-size: 12px;
}
.claude-test__num { font-family: var(--mono); font-weight: 700; color: var(--text); }
.claude-test__visibility {
  font-size: 10px; padding: 2px 7px; border-radius: 4px;
  background: var(--surface); color: var(--text-3);
  font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em;
}
.claude-test__verdict {
  margin-left: auto;
  font-family: var(--mono); font-size: 11px; font-weight: 700;
  padding: 3px 8px; border-radius: 4px;
  background: var(--surface); color: var(--text-3);
  text-transform: uppercase; letter-spacing: 0.04em;
}
.claude-test__verdict.is-pass { background: var(--success-bg); color: var(--success); }
.claude-test__verdict.is-fail { background: var(--danger-bg); color: var(--danger); }
.claude-test__verdict.is-skipped { background: var(--warning-bg); color: var(--warning); }
.claude-test__grid {
  display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0;
}
@media (max-width: 900px) { .claude-test__grid { grid-template-columns: 1fr; } }
.claude-test__col {
  display: flex; flex-direction: column; gap: 6px;
  padding: 12px 14px;
  border-right: 1px solid var(--border-soft);
}
.claude-test__col:last-child { border-right: 0; }
@media (max-width: 900px) {
  .claude-test__col { border-right: 0; border-bottom: 1px solid var(--border-soft); }
  .claude-test__col:last-child { border-bottom: 0; }
}
.claude-test__col label {
  font-size: 10px; color: var(--text-4); font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.06em;
}
.claude-test__locked { color: var(--text-4); font-weight: 500; text-transform: none; letter-spacing: 0; font-size: 11px; margin-left: 4px; }
.claude-test__output {
  width: 100%;
  min-height: 80px;
  background: #0c0e16; color: var(--text);
  border: 1px solid var(--border-soft); border-radius: 6px;
  padding: 10px 12px;
  font-family: var(--mono); font-size: 13px; line-height: 1.55;
  resize: vertical; outline: none;
}
.claude-test__output:focus { border-color: var(--accent); }
.claude-judge-actions {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  padding-top: 6px;
}
.claude-judge-summary {
  font-family: var(--mono); font-size: 13px; font-weight: 700;
  padding: 6px 12px; border-radius: 6px;
  background: var(--surface-3); color: var(--text-2);
  margin-left: auto;
}
.claude-judge-summary.is-pass { background: var(--success-bg); color: var(--success); }
.claude-judge-summary.is-fail { background: var(--danger-bg); color: var(--danger); }
.claude-judge-summary.is-partial { background: var(--warning-bg); color: var(--warning); }

/* Claude source pill in problem table */
.problemtable__src-claude,
.problemlist__src-claude { background: linear-gradient(135deg, rgba(99,102,241,0.30), rgba(139,92,246,0.30)); color: white; }

/* -------- "Where you'll use this" panel -------- */
.syntax-where {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-2);
  overflow: hidden;
}
.syntax-where__head {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px;
  background: linear-gradient(90deg, rgba(99,102,241,0.10), transparent);
  border-bottom: 1px solid var(--border-soft);
  font-size: 12px; font-weight: 700; color: var(--text-2);
  text-transform: uppercase; letter-spacing: 0.06em;
}
.syntax-where__head .i { width: 14px; height: 14px; color: var(--accent-3); }
.syntax-where__list { display: flex; flex-direction: column; }
.syntax-where__row {
  display: grid; grid-template-columns: 1fr auto; gap: 6px 14px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-soft);
}
.syntax-where__row:last-child { border-bottom: 0; }
.syntax-where__when { font-size: 13px; }
.syntax-where__when strong { color: var(--text); }
.syntax-where__why { grid-column: 1 / -1; font-size: 12px; color: var(--text-3); line-height: 1.55; }
.syntax-where__link {
  background: transparent; border: 0; color: var(--accent-3); cursor: pointer;
  font: inherit; font-size: 12px; font-weight: 600; padding: 0;
  white-space: nowrap;
}
.syntax-where__link:hover { color: var(--text); }

/* -------- Problems table -------- */
.problembar { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.5fr 1fr; gap: 16px; align-items: start; }
@media (max-width: 1100px) { .problembar { grid-template-columns: 1fr 1fr; } }
@media (max-width: 700px) { .problembar { grid-template-columns: 1fr; } }
.problembar__group { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.problembar__search {
  display: flex; align-items: center; gap: 8px;
  padding: 9px 12px; border-radius: var(--radius);
  background: var(--surface-2); border: 1px solid var(--border);
  transition: border-color .15s ease, box-shadow .15s ease;
}
.problembar__search:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(99,102,241,0.15); }
.problembar__search input {
  background: transparent; border: 0; outline: 0; flex: 1; color: var(--text); font: inherit; font-size: 13px;
}
.problembar__search .i { width: 16px; height: 16px; color: var(--text-3); }
.rangelabel { font-size: 11px; color: var(--text-3); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; }
.rangewrap { display: flex; flex-direction: column; gap: 0; padding: 4px 6px; background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius); }
.rangewrap input[type="range"] { width: 100%; }
.rangevalues { font-family: var(--mono); font-size: 12px; color: var(--text-2); text-align: center; padding-top: 2px; }

/* Sleek range slider */
input[type="range"] {
  -webkit-appearance: none; appearance: none;
  height: 4px;
  background: var(--surface-3);
  border-radius: 2px;
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px; height: 14px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 50%; cursor: pointer;
  box-shadow: 0 0 0 2px var(--surface), 0 2px 8px rgba(99,102,241,0.45);
  transition: transform .15s ease;
}
input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.18); }
input[type="range"]::-moz-range-thumb {
  width: 14px; height: 14px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 50%; cursor: pointer; border: 2px solid var(--surface);
  box-shadow: 0 2px 8px rgba(99,102,241,0.45);
}

.problemtable {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden;
}
.problemtable__head {
  display: grid;
  grid-template-columns: 60px 1fr 100px 1fr 100px 80px 60px;
  gap: 16px;
  padding: 12px 18px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border-soft);
  font-size: 11px; font-weight: 700; color: var(--text-4); text-transform: uppercase; letter-spacing: 0.06em;
}
.problemtable__row {
  display: grid;
  grid-template-columns: 60px 1fr 100px 1fr 100px 80px 60px;
  gap: 16px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-soft);
  cursor: pointer;
  transition: background .15s ease;
  align-items: center;
}
.problemtable__row:last-child { border-bottom: 0; }
.problemtable__row:hover { background: var(--surface-2); }
.problemtable__row.is-solved { background: rgba(16,185,129,0.04); }
.problemtable__row.is-solved:hover { background: rgba(16,185,129,0.08); }
.problemtable__id { font-family: var(--mono); font-size: 12px; color: var(--text-3); }
.problemtable__name { font-size: 14px; font-weight: 600; color: var(--text); display: flex; align-items: center; gap: 8px; min-width: 0; }
.problemtable__name span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.problemtable__src { font-size: 11px; color: var(--text-3); font-weight: 600; padding: 3px 8px; background: var(--surface-3); border-radius: 4px; text-transform: uppercase; letter-spacing: 0.04em; display: inline-block; width: fit-content; }
.problemtable__topics { display: flex; gap: 4px; flex-wrap: wrap; min-width: 0; }
.diff {
  font-family: var(--mono); font-weight: 700; font-size: 13px;
  padding: 3px 8px; border-radius: 4px;
  background: var(--surface-3); display: inline-block; min-width: 50px; text-align: center;
}
.diff[data-r="newbie"] { color: var(--r-newbie); background: rgba(154,161,179,0.12); }
.diff[data-r="pupil"] { color: var(--r-pupil); background: rgba(74,222,128,0.12); }
.diff[data-r="spec"] { color: var(--r-spec); background: rgba(34,211,238,0.12); }
.diff[data-r="expert"] { color: var(--r-expert); background: rgba(96,165,250,0.12); }
.diff[data-r="cm"] { color: var(--r-cm); background: rgba(192,132,252,0.12); }
.diff[data-r="master"] { color: var(--r-master); background: rgba(251,191,36,0.12); }
.diff[data-r="im"] { color: var(--r-im); background: rgba(251,146,60,0.12); }
.diff[data-r="gm"] { color: var(--r-gm); background: rgba(248,113,113,0.12); }
.diff[data-r="lgm"] { color: white; background: linear-gradient(135deg, #ef4444, #b91c1c); }

.solvedmark {
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--success); display: grid; place-items: center;
  flex-shrink: 0;
}
.solvedmark svg { width: 11px; height: 11px; color: white; }
.bookmarkmark {
  width: 18px; height: 18px;
  display: grid; place-items: center; color: var(--warning);
}
.bookmarkmark svg { width: 14px; height: 14px; }

.problemtable__actions { display: flex; gap: 4px; justify-content: flex-end; }
.problemtable__actions button {
  background: transparent; border: 0; cursor: pointer;
  padding: 4px; color: var(--text-3); border-radius: 4px;
  transition: color .15s ease, background .15s ease;
}
.problemtable__actions button:hover { color: var(--text); background: var(--surface-3); }
.problemtable__actions svg { width: 16px; height: 16px; }
.problemtable__actions button.is-on { color: var(--warning); }

/* Problem detail view */
.problemview {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 32px;
  display: flex; flex-direction: column; gap: 20px;
}
.problemview__head { display: flex; flex-direction: column; gap: 8px; padding-bottom: 16px; border-bottom: 1px solid var(--border-soft); }
.problemview__back { align-self: flex-start; display: inline-flex; align-items: center; gap: 6px; background: transparent; border: 0; color: var(--text-3); font: inherit; font-size: 13px; cursor: pointer; padding: 0; margin-bottom: 8px; }
.problemview__back:hover { color: var(--accent-3); }
.problemview__top { display: flex; align-items: flex-start; gap: 16px; flex-wrap: wrap; }
.problemview__topinfo { flex: 1; min-width: 0; }
.problemview__title { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; margin: 0; }
.problemview__topmeta { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-top: 8px; }
.problemview__topactions { display: flex; gap: 8px; flex-wrap: wrap; }
.problemview__section { display: flex; flex-direction: column; gap: 10px; }
.problemview__sectionhead { font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-4); font-weight: 700; }

.hintbox {
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 16px;
  display: flex; flex-direction: column; gap: 8px;
}
.hintbox__head { display: flex; align-items: center; gap: 8px; cursor: pointer; user-select: none; }
.hintbox__num {
  font-family: var(--mono); font-size: 11px; font-weight: 700;
  width: 20px; height: 20px; border-radius: 5px;
  display: grid; place-items: center;
  background: var(--surface-3); color: var(--text-3);
}
.hintbox__title { font-size: 14px; font-weight: 600; flex: 1; }
.hintbox__chevron { color: var(--text-3); transition: transform .15s ease; }
.hintbox.is-open .hintbox__chevron { transform: rotate(90deg); }
.hintbox__body { display: none; font-size: 14px; color: var(--text-2); line-height: 1.7; }
.hintbox.is-open .hintbox__body { display: block; }

/* -------- Attempt outcome bar / buttons -------- */
.attemptbar {
  margin-top: 14px;
  display: grid; grid-template-columns: 28px 1fr auto; gap: 12px; align-items: center;
  padding: 10px 14px; border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface-2);
}
.attemptbar--solved { background: var(--success-bg); border-color: rgba(16,185,129,0.30); }
.attemptbar--partial { background: var(--warning-bg); border-color: rgba(245,158,11,0.30); }
.attemptbar--wrong { background: var(--danger-bg); border-color: rgba(239,68,68,0.30); }
.attemptbar__ico {
  width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center;
  font-weight: 700; font-size: 16px;
}
.attemptbar--solved .attemptbar__ico { background: var(--success); color: white; }
.attemptbar--partial .attemptbar__ico { background: var(--warning); color: white; }
.attemptbar--wrong .attemptbar__ico { background: var(--danger); color: white; }
.attemptbar__text { display: flex; flex-direction: column; gap: 2px; font-size: 13px; }
.attemptbar__text strong { color: var(--text); font-size: 14px; }
.attemptbar__delta { font-family: var(--mono); font-size: 12px; }
.attemptbar__delta.pos { color: var(--success); }
.attemptbar__delta.neg { color: var(--danger); }

.attempt-section { gap: 10px; }
.attempt-section__hint { font-size: 12px; color: var(--text-3); margin: 0; }
.attemptbtns {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px;
}
@media (max-width: 700px) { .attemptbtns { grid-template-columns: 1fr; } }
.attemptbtns .btn {
  justify-content: flex-start;
  padding: 14px 16px;
  font-size: 14px;
  position: relative;
  overflow: hidden;
}
.attemptbtns__delta {
  margin-left: auto;
  font-family: var(--mono); font-size: 12px; font-weight: 700;
  padding: 3px 8px; border-radius: 4px;
  background: rgba(0,0,0,0.20);
}

.partial-slider {
  display: grid; grid-template-columns: 1fr; gap: 14px;
  padding: 16px; border-radius: var(--radius);
  background: var(--surface-2); border: 1px solid var(--border);
}
.partial-slider input[type="range"] { height: 6px; }
.partial-slider__readout {
  display: flex; align-items: center; justify-content: space-between;
  font-family: var(--mono);
}
.partial-slider__pct {
  font-size: 28px; font-weight: 700; letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.partial-slider__delta {
  font-size: 16px; font-weight: 700;
}
.partial-slider__quick {
  margin-top: 6px;
  display: flex; gap: 6px; flex-wrap: wrap;
}

/* Problem row status colors */
.problemtable__row.is-partial { background: rgba(245,158,11,0.04); }
.problemtable__row.is-partial:hover { background: rgba(245,158,11,0.08); }
.problemtable__row.is-wrong { background: rgba(239,68,68,0.04); }
.problemtable__row.is-wrong:hover { background: rgba(239,68,68,0.08); }
.solvedmark.partialmark { background: var(--warning); }
.solvedmark.wrongmark { background: var(--danger); }

/* -------- Math grid -------- */
.mathgrid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px;
}
.mathcard {
  padding: 24px; border-radius: var(--radius-lg);
  background: var(--surface); border: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 12px;
  cursor: pointer;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
  position: relative; overflow: hidden;
}
.mathcard:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
}
.mathcard__symbol {
  font-family: var(--serif); font-size: 38px; font-style: italic;
  line-height: 1; letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--accent-3), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.mathcard__title { font-size: 18px; font-weight: 600; letter-spacing: -0.01em; margin: 0; }
.mathcard__desc { font-size: 13px; color: var(--text-2); line-height: 1.55; }
.mathcard__usecase { font-size: 12px; color: var(--text-3); padding-top: 8px; border-top: 1px dashed var(--border); margin-top: 4px; }
.mathcard__usecase strong { color: var(--accent-3); font-weight: 600; }

.mathview {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 32px;
  display: flex; flex-direction: column; gap: 20px;
}

.formula {
  background: linear-gradient(180deg, rgba(99,102,241,0.06), transparent);
  padding: 18px 24px;
  border-radius: var(--radius);
  border-left: 3px solid var(--accent);
  font-family: var(--mono);
  font-size: 16px;
  letter-spacing: 0.02em;
  display: flex; flex-direction: column; gap: 6px;
}
.formula__main { font-size: 18px; color: var(--text); font-weight: 500; }
.formula__note { font-size: 12px; color: var(--text-3); }

/* -------- Math overhaul: groups, hero, sections, quiz -------- */
.mathgroup { display: flex; flex-direction: column; gap: 14px; margin-bottom: 28px; }
.mathgroup__head { display: flex; flex-direction: column; gap: 4px; }
.mathgroup__title { font-size: 18px; font-weight: 700; letter-spacing: -0.01em; margin: 0;
  background: linear-gradient(135deg, #c7d2fe 0%, #e9d5ff 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.mathgroup__desc { font-size: 13px; color: var(--text-3); margin: 0; }

.mathcard__meta {
  display: flex; gap: 6px; flex-wrap: wrap;
  margin-top: 8px; padding-top: 12px;
  border-top: 1px dashed var(--border-soft);
}

.mathview__hero {
  display: flex; align-items: center; gap: 18px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-soft);
}
.mathview__symbol {
  font-family: var(--serif); font-size: 60px; font-style: italic;
  line-height: 1; letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--accent-3), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  min-width: 80px; text-align: center;
}
.mathview__short { font-size: 16px; line-height: 1.55; margin-top: 6px; }

.mathview__nav {
  display: flex; gap: 6px; flex-wrap: wrap; padding-top: 14px;
}
.mathview__navlink {
  font-size: 12px; padding: 5px 12px; border-radius: 99px;
  background: var(--surface-2); border: 1px solid var(--border);
  color: var(--text-2); text-decoration: none; font-weight: 500;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.mathview__navlink:hover {
  background: var(--surface-hover); color: var(--text);
  border-color: var(--accent);
}

.mathview__section {
  display: flex; flex-direction: column; gap: 14px;
  padding-top: 20px;
  scroll-margin-top: 80px;
}
.mathview__sectionhead {
  font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--text-3);
  margin: 0;
  padding-bottom: 6px; border-bottom: 1px solid var(--border-soft);
}
.mathview__intro { font-size: 15px; line-height: 1.7; color: var(--text-2); }
.mathview__sub { font-size: 13px; color: var(--text-3); margin: -8px 0 0; }

.mathusaco { display: flex; flex-direction: column; gap: 8px; }
.mathusaco__row {
  padding: 12px 14px;
  background: var(--surface-2);
  border: 1px solid var(--border-soft);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
}
.mathusaco__row strong { display: block; font-size: 14px; color: var(--text); margin-bottom: 4px; }
.mathusaco__row p { font-size: 13px; color: var(--text-2); line-height: 1.55; margin: 0; }

/* Quiz */
.quiz { display: flex; flex-direction: column; gap: 12px; }
.quiz__q {
  padding: 16px 18px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex; flex-direction: column; gap: 10px;
}
.quiz__qhead {
  display: flex; align-items: flex-start; gap: 10px;
}
.quiz__num {
  font-family: var(--mono); font-weight: 700; font-size: 13px;
  width: 26px; height: 26px; flex-shrink: 0;
  display: grid; place-items: center;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
}
.quiz__qtext { font-size: 14px; line-height: 1.55; color: var(--text); padding-top: 3px; }
.quiz__choices {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 8px;
}
.quiz__choice {
  padding: 10px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font: inherit; font-size: 13px; color: var(--text);
  cursor: pointer; text-align: left;
  transition: background .15s ease, border-color .15s ease, transform .12s ease;
}
.quiz__choice:hover:not(:disabled) {
  background: var(--surface-hover);
  border-color: var(--accent);
}
.quiz__choice:disabled { cursor: default; opacity: 0.85; }
.quiz__choice.is-correct {
  background: var(--success-bg);
  border-color: rgba(16,185,129,0.40);
  color: var(--success);
  font-weight: 600;
}
.quiz__choice.is-wrong {
  background: var(--danger-bg);
  border-color: rgba(239,68,68,0.40);
  color: var(--danger);
}
.quiz__explain {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-2);
  padding: 10px 14px;
  background: var(--surface-3);
  border-left: 3px solid var(--accent-3);
  border-radius: 0 6px 6px 0;
}
.quiz__summary {
  display: none;
  padding: 14px 18px; border-radius: var(--radius);
  background: var(--surface-2); border: 1px solid var(--border);
  font-family: var(--mono); font-weight: 700; font-size: 14px;
  margin-top: 8px;
}
.quiz__summary.is-shown { display: block; }
.quiz__summary.is-perfect {
  background: var(--success-bg); border-color: rgba(16,185,129,0.30);
  color: var(--success);
}

/* -------- Mock contests -------- */
.contestform { display: flex; flex-direction: column; gap: 12px; }
.contestform label { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--text-3); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; }
.contestform input, .contestform select {
  padding: 10px 12px;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text);
  font: inherit; font-size: 14px;
  outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.contestform input:focus, .contestform select:focus {
  border-color: var(--accent); box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

.mockclock {
  font-family: var(--mono); font-size: 24px; font-weight: 700; color: var(--text);
  letter-spacing: 0.04em;
  padding: 4px 12px; background: var(--surface-2);
  border: 1px solid var(--border); border-radius: var(--radius);
}
.mockproblems { display: flex; flex-direction: column; gap: 12px; }
.mockproblem {
  display: grid; grid-template-columns: 32px 1fr 100px auto; gap: 14px; align-items: center;
  padding: 14px 16px;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--radius);
}
.mockproblem__letter {
  font-family: var(--mono); font-weight: 700; font-size: 18px;
  color: var(--accent-3); text-align: center;
}
.mockproblem__name { font-size: 14px; font-weight: 600; }
.mockproblem__src { font-size: 12px; color: var(--text-3); margin-top: 2px; }

.mockhistory { display: flex; flex-direction: column; gap: 8px; }
.mockhistory__row {
  display: grid; grid-template-columns: 1fr auto auto auto; gap: 12px; align-items: center;
  padding: 10px 12px;
  background: var(--surface-2); border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  font-size: 13px;
}
.mockhistory__row:hover { background: var(--surface-hover); }
.mockhistory__date { color: var(--text-3); font-family: var(--mono); font-size: 12px; }
.mockhistory__score { font-family: var(--mono); font-weight: 600; color: var(--text); }
.mockhistory__delta { font-family: var(--mono); font-weight: 600; }
.mockhistory__delta.up { color: var(--success); }
.mockhistory__delta.dn { color: var(--danger); }

.empty {
  padding: 40px; text-align: center; color: var(--text-3); font-size: 14px;
  border: 1px dashed var(--border); border-radius: var(--radius); background: var(--surface-2);
}
.empty strong { display: block; color: var(--text); margin-bottom: 4px; font-size: 15px; }

/* -------- Profile -------- */
.profileform { display: flex; flex-direction: column; gap: 14px; }
.profileform label { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--text-3); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; }
.profileform input, .profileform select {
  padding: 10px 12px;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text);
  font: inherit; font-size: 14px; outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.profileform input:focus, .profileform select:focus {
  border-color: var(--accent); box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}
.profilestats { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.profilestats__cell {
  padding: 14px; background: var(--surface-2); border: 1px solid var(--border-soft);
  border-radius: var(--radius); display: flex; flex-direction: column; gap: 4px;
}
.profilestats__label { font-size: 11px; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.06em; font-weight: 600; }
.profilestats__value { font-family: var(--mono); font-size: 22px; font-weight: 700; letter-spacing: -0.01em; }

.datarow { display: flex; gap: 8px; flex-wrap: wrap; }

/* -------- Modal -------- */
.modal { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 24px; }
.modal__backdrop { position: absolute; inset: 0; background: rgba(0,0,0,0.55); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); animation: fadeIn .15s ease; }
.modal__panel {
  position: relative; z-index: 1;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 28px; min-width: 320px; max-width: 580px; max-height: calc(100vh - 60px); overflow: auto;
  box-shadow: var(--shadow-lg);
  animation: panelIn .2s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes panelIn { from { opacity: 0; transform: translateY(8px) scale(.98); } to { opacity: 1; transform: none; } }

/* -------- Toaster -------- */
.toaster { position: fixed; bottom: 24px; right: 24px; z-index: 200; display: flex; flex-direction: column; gap: 8px; }
.toast {
  padding: 12px 16px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  display: flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 500;
  animation: toastIn .25s ease;
  min-width: 220px; max-width: 360px;
}
.toast.ok { border-color: rgba(16,185,129,0.40); background: linear-gradient(135deg, var(--surface), rgba(16,185,129,0.08)); }
.toast.bad { border-color: rgba(239,68,68,0.40); background: linear-gradient(135deg, var(--surface), rgba(239,68,68,0.08)); }
.toast.info { border-color: rgba(99,102,241,0.40); background: linear-gradient(135deg, var(--surface), rgba(99,102,241,0.08)); }
@keyframes toastIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: none; } }
.toast.out { animation: toastOut .2s ease forwards; }
@keyframes toastOut { to { opacity: 0; transform: translateY(20px); } }
.toast .i { width: 18px; height: 18px; flex-shrink: 0; }
.toast.ok .i { color: var(--success); }
.toast.bad .i { color: var(--danger); }
.toast.info .i { color: var(--accent-3); }

/* -------- Command palette -------- */
.palette { position: fixed; inset: 0; z-index: 150; padding: 80px 20px 20px; }
.palette__backdrop { position: absolute; inset: 0; background: rgba(0,0,0,0.55); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); animation: fadeIn .15s ease; }
.palette__panel {
  position: relative; max-width: 600px; margin: 0 auto;
  background: var(--surface); border: 1px solid var(--border-strong); border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: var(--shadow-lg);
  animation: panelIn .2s ease;
}
.palette__input { display: flex; align-items: center; gap: 10px; padding: 14px 18px; border-bottom: 1px solid var(--border-soft); }
.palette__input .i { width: 18px; height: 18px; color: var(--text-3); }
.palette__input input { flex: 1; background: transparent; border: 0; outline: 0; color: var(--text); font: inherit; font-size: 16px; }
.palette__input input::placeholder { color: var(--text-4); }
.palette__results { max-height: 60vh; overflow-y: auto; padding: 6px 0; }
.palette__result {
  display: grid; grid-template-columns: 32px 1fr auto; gap: 10px;
  padding: 10px 18px; cursor: pointer;
  transition: background .12s ease;
  align-items: center;
}
.palette__result:hover, .palette__result.is-active { background: var(--surface-2); }
.palette__resultico {
  width: 28px; height: 28px; border-radius: 6px;
  background: var(--surface-3); color: var(--text-3);
  display: grid; place-items: center;
}
.palette__resultico .i { width: 14px; height: 14px; }
.palette__resulttitle { font-size: 13px; font-weight: 600; color: var(--text); }
.palette__resultsub { font-size: 11px; color: var(--text-3); margin-top: 1px; }
.palette__resulttype { font-size: 11px; color: var(--text-4); font-family: var(--mono); }

/* -------- Misc -------- */
.kbd {
  font-family: var(--mono); font-size: 11px;
  padding: 2px 6px; background: var(--surface-3); border: 1px solid var(--border);
  border-radius: 4px; color: var(--text-3);
}

/* -------- Light theme prism override -------- */
[data-theme="light"] .codeblock { background: #f8fafc; }
[data-theme="light"] .codeblock pre { color: #0f172a; }
[data-theme="light"] code[class*="language-"], [data-theme="light"] pre[class*="language-"] { color: #0f172a; }
[data-theme="light"] .drillpane textarea { background: #f8fafc; color: #0f172a; }

/* prism color tweaks for dark */
.token.comment, .token.prolog, .token.doctype, .token.cdata { color: #6e7a99; }
.token.punctuation { color: #a7b2cf; }
.token.property, .token.tag, .token.boolean, .token.number, .token.constant, .token.symbol, .token.deleted { color: #f87171; }
.token.selector, .token.attr-name, .token.string, .token.char, .token.builtin, .token.inserted { color: #4ade80; }
.token.operator, .token.entity, .token.url, .language-css .token.string, .style .token.string { color: #fbbf24; }
.token.atrule, .token.attr-value, .token.keyword { color: #c084fc; }
.token.function, .token.class-name { color: #60a5fa; }
.token.regex, .token.important, .token.variable { color: #f59e0b; }