/* ============================================================
   FrontierIQ — Master AB-731
   Duolingo-inspired mobile-first PWA styling
   ============================================================ */

:root {
  /* Brand */
  --fq-primary: #0067C0;
  --fq-primary-dark: #004A88;
  --fq-primary-soft: #E7F1FA;

  --fq-accent: #58CC02;
  --fq-accent-dark: #3F8F00;
  --fq-accent-soft: #E5F8D5;

  --fq-orange: #FF9600;
  --fq-orange-dark: #C67300;

  --fq-red: #FF4B4B;
  --fq-red-dark: #C13B3B;
  --fq-red-soft: #FFE1E1;

  --fq-yellow: #FFC800;
  --fq-yellow-dark: #C9A000;

  --fq-purple: #CE82FF;
  --fq-purple-dark: #A24BD9;

  --fq-teal: #1CB0F6;
  --fq-teal-dark: #1082C7;

  --fq-pink: #FF66B2;
  --fq-pink-dark: #C6478A;

  /* Neutral (light) */
  --fq-bg: #FFFFFF;
  --fq-bg-alt: #F7F7F7;
  --fq-bg-elev: #FFFFFF;
  --fq-text: #3C3C3C;
  --fq-text-muted: #777777;
  --fq-border: #E5E5E5;
  --fq-border-strong: #CCCCCC;
  --fq-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);

  /* Sizing */
  --fq-radius-sm: 8px;
  --fq-radius-md: 14px;
  --fq-radius-lg: 20px;
  --fq-radius-xl: 28px;
  --fq-tap: 48px;

  /* Motion */
  --fq-ease: cubic-bezier(0.2, 0.7, 0.3, 1);
  --fq-fast: 120ms;
  --fq-med: 220ms;

  /* Safe areas */
  --fq-safe-top: env(safe-area-inset-top, 0px);
  --fq-safe-bottom: env(safe-area-inset-bottom, 0px);
  --fq-safe-left: env(safe-area-inset-left, 0px);
  --fq-safe-right: env(safe-area-inset-right, 0px);
}

@media (prefers-color-scheme: dark) {
  :root {
    --fq-bg: #131F24;
    --fq-bg-alt: #1B2A31;
    --fq-bg-elev: #202F36;
    --fq-text: #F1F7FB;
    --fq-text-muted: #9AB1BD;
    --fq-border: #37464F;
    --fq-border-strong: #4A5C66;
    --fq-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
    --fq-primary-soft: #12314A;
    --fq-accent-soft: #1D3712;
    --fq-red-soft: #3A1E1E;
  }
}

/* Manual theme override via body attribute */
[data-theme="dark"] {
  --fq-bg: #131F24;
  --fq-bg-alt: #1B2A31;
  --fq-bg-elev: #202F36;
  --fq-text: #F1F7FB;
  --fq-text-muted: #9AB1BD;
  --fq-border: #37464F;
  --fq-border-strong: #4A5C66;
  --fq-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  --fq-primary-soft: #12314A;
  --fq-accent-soft: #1D3712;
  --fq-red-soft: #3A1E1E;
}
[data-theme="light"] {
  --fq-bg: #FFFFFF;
  --fq-bg-alt: #F7F7F7;
  --fq-bg-elev: #FFFFFF;
  --fq-text: #3C3C3C;
  --fq-text-muted: #777777;
  --fq-border: #E5E5E5;
  --fq-border-strong: #CCCCCC;
  --fq-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  --fq-primary-soft: #E7F1FA;
  --fq-accent-soft: #E5F8D5;
  --fq-red-soft: #FFE1E1;
}

/* ---------- Base ---------- */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  height: 100%;
  -webkit-text-size-adjust: 100%;
  color-scheme: light dark;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI Variable", "Segoe UI",
    Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
}

body {
  margin: 0;
  min-height: 100%;
  min-height: 100dvh;
  background: var(--fq-bg);
  color: var(--fq-text);
  overscroll-behavior-y: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

button {
  font-family: inherit;
}

button:focus-visible,
[role="button"]:focus-visible {
  outline: 3px solid var(--fq-teal);
  outline-offset: 2px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- App shell ---------- */

#app {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding-top: var(--fq-safe-top);
  padding-left: var(--fq-safe-left);
  padding-right: var(--fq-safe-right);
}

/* ---------- Splash ---------- */

.splash {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  background: linear-gradient(160deg, var(--fq-primary), #4E2AA6 90%);
  color: white;
  gap: 12px;
  animation: fadeIn var(--fq-med) var(--fq-ease);
}
.splash__logo {
  width: 96px;
  height: 96px;
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.15);
  display: grid;
  place-items: center;
  box-shadow: inset 0 -6px 0 rgba(0, 0, 0, 0.15), 0 12px 30px rgba(0, 0, 0, 0.25);
}
.splash__mark {
  font-weight: 900;
  font-size: 40px;
  letter-spacing: -0.02em;
}
.splash__title {
  font-weight: 900;
  font-size: 28px;
  letter-spacing: -0.01em;
}
.splash__subtitle {
  opacity: 0.85;
  font-weight: 600;
}

/* ---------- Header ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  background: var(--fq-bg);
  border-bottom: 1px solid var(--fq-border);
}
.topbar__inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.topbar__brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 900;
  font-size: 18px;
  color: var(--fq-primary);
  letter-spacing: -0.01em;
}
.topbar__brand svg {
  width: 26px;
  height: 26px;
}
.stats {
  margin-left: auto;
  display: flex;
  gap: 6px;
}
.stat {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--fq-bg-alt);
  font-weight: 800;
  font-size: 14px;
  color: var(--fq-text);
  min-height: 34px;
  border: 1px solid var(--fq-border);
}
.stat--streak { color: var(--fq-orange); }
.stat--xp     { color: var(--fq-yellow-dark); }
.stat--heart  { color: var(--fq-red); }
.stat--level  { color: var(--fq-primary); background: var(--fq-primary-soft); border-color: var(--fq-primary); }
.stat--gem    { color: var(--fq-purple-dark); }
.stat--level { border: none; cursor: pointer; }

/* Path chip strip below topbar */
.pathstrip {
  overflow-x: auto;
  border-bottom: 1px solid var(--fq-border);
  background: var(--fq-bg);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.pathstrip::-webkit-scrollbar { display: none; }
.pathstrip__inner {
  display: flex;
  gap: 8px;
  padding: 8px 12px;
  max-width: 720px;
  margin: 0 auto;
}
.pathchip {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 2px solid var(--fq-border-strong);
  background: var(--fq-bg-elev);
  color: var(--fq-text);
  font-weight: 800;
  font-size: 13px;
  cursor: pointer;
  min-height: 40px;
  position: relative;
}
.pathchip:hover { border-color: var(--fq-teal); }
.pathchip--active {
  background: var(--fq-primary);
  color: white;
  border-color: var(--fq-primary);
  box-shadow: 0 3px 0 var(--fq-primary-dark);
}
.pathchip__icon { font-size: 16px; }
.pathchip__label { display: flex; flex-direction: column; align-items: flex-start; gap: 0; line-height: 1.1; }
.pathchip__code { font-size: 10px; letter-spacing: 0.1em; opacity: 0.9; }
.pathchip__soon {
  background: var(--fq-yellow);
  color: var(--fq-yellow-dark);
  padding: 1px 6px;
  border-radius: 8px;
  font-size: 9px;
  letter-spacing: 0.1em;
  margin-left: 4px;
}

/* ---------- Page container ---------- */

.page {
  flex: 1;
  padding: 20px 16px calc(24px + var(--fq-safe-bottom));
  max-width: 720px;
  width: 100%;
  margin: 0 auto;
}
.page--flush { padding: 0; }

/* ---------- Home: hero ---------- */

.hero {
  padding: 20px;
  border-radius: var(--fq-radius-xl);
  background: linear-gradient(160deg, var(--fq-primary), var(--fq-primary-dark));
  color: white;
  margin-bottom: 20px;
  box-shadow: var(--fq-shadow);
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  right: -30px;
  top: -30px;
  width: 160px;
  height: 160px;
  background: radial-gradient(circle at center, rgba(255,255,255,0.18), transparent 70%);
  pointer-events: none;
}
.hero__eyebrow {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.85;
  font-weight: 800;
}
.hero__title {
  font-size: 22px;
  font-weight: 900;
  margin: 6px 0 4px;
  letter-spacing: -0.01em;
}
.hero__meta {
  font-size: 14px;
  opacity: 0.9;
}
.hero__progress {
  margin-top: 14px;
  height: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.2);
  overflow: hidden;
}
.hero__progress span {
  display: block;
  height: 100%;
  background: var(--fq-accent);
  border-radius: 999px;
  transition: width var(--fq-med) var(--fq-ease);
}

/* ---------- Unit sections ---------- */

.unit {
  margin: 28px 0;
}
.unit__header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--fq-radius-lg);
  color: white;
  box-shadow: 0 4px 0 var(--unit-shadow, rgba(0,0,0,0.1));
  background: var(--unit-color, var(--fq-primary));
  margin-bottom: 20px;
}
.unit__icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.2);
  display: grid;
  place-items: center;
  font-size: 22px;
  flex-shrink: 0;
}
.unit__titles {
  flex: 1;
  min-width: 0;
}
.unit__eyebrow {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.9;
  font-weight: 800;
}
.unit__title {
  font-size: 17px;
  font-weight: 900;
  letter-spacing: -0.01em;
  margin: 2px 0 0;
}
.unit__progress-pill {
  padding: 6px 10px;
  background: rgba(0, 0, 0, 0.15);
  border-radius: 999px;
  font-weight: 800;
  font-size: 13px;
  white-space: nowrap;
}

/* Unit color themes applied via data-color attribute */
.unit[data-color="blue"]   { --unit-color: var(--fq-primary);  --unit-shadow: var(--fq-primary-dark); }
.unit[data-color="purple"] { --unit-color: #8A5DFF;            --unit-shadow: #5A32C4; }
.unit[data-color="teal"]   { --unit-color: var(--fq-teal);     --unit-shadow: var(--fq-teal-dark); }
.unit[data-color="green"]  { --unit-color: var(--fq-accent);   --unit-shadow: var(--fq-accent-dark); }
.unit[data-color="orange"] { --unit-color: var(--fq-orange);   --unit-shadow: var(--fq-orange-dark); }
.unit[data-color="red"]    { --unit-color: var(--fq-red);      --unit-shadow: var(--fq-red-dark); }
.unit[data-color="pink"]   { --unit-color: var(--fq-pink);     --unit-shadow: var(--fq-pink-dark); }
.unit[data-color="yellow"] { --unit-color: var(--fq-yellow);   --unit-shadow: var(--fq-yellow-dark); }

/* Path of lesson nodes (snake layout) */
.path {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  padding: 8px 0 4px;
}
.path__node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  transform: translateX(var(--offset, 0px));
}
.node {
  --node-size: 76px;
  width: var(--node-size);
  height: var(--node-size);
  border-radius: 50%;
  border: none;
  background: var(--node-color, var(--fq-primary));
  color: white;
  display: grid;
  place-items: center;
  cursor: pointer;
  font-size: 32px;
  font-weight: 900;
  box-shadow:
    0 6px 0 var(--node-shadow, var(--fq-primary-dark)),
    0 12px 24px rgba(0, 0, 0, 0.08);
  transition: transform var(--fq-fast) var(--fq-ease),
              box-shadow var(--fq-fast) var(--fq-ease);
  position: relative;
}
.node:hover { transform: translateY(-2px); }
.node:active {
  transform: translateY(6px);
  box-shadow: 0 0 0 var(--node-shadow, var(--fq-primary-dark));
}
.node--locked {
  background: var(--fq-bg-alt);
  color: var(--fq-text-muted);
  box-shadow: 0 4px 0 var(--fq-border-strong);
  cursor: not-allowed;
}
.node--locked:hover { transform: none; }
.node--locked:active { transform: none; box-shadow: 0 4px 0 var(--fq-border-strong); }

.node--complete { background: var(--fq-accent); box-shadow: 0 6px 0 var(--fq-accent-dark), 0 12px 24px rgba(0, 0, 0, 0.08); }
.node--current {
  animation: bob 1.6s var(--fq-ease) infinite;
}
.node--current::before {
  content: "START";
  position: absolute;
  top: -32px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--fq-bg);
  border: 2px solid var(--fq-border);
  color: var(--fq-text);
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.1em;
  box-shadow: 0 3px 0 var(--fq-border-strong);
}

.path__node[data-slot="0"] { --offset: 0px; }
.path__node[data-slot="1"] { --offset: 60px; }
.path__node[data-slot="2"] { --offset: 100px; }
.path__node[data-slot="3"] { --offset: 60px; }
.path__node[data-slot="4"] { --offset: 0px; }
.path__node[data-slot="5"] { --offset: -60px; }
.path__node[data-slot="6"] { --offset: -100px; }
.path__node[data-slot="7"] { --offset: -60px; }

@media (max-width: 420px) {
  .path__node[data-slot="1"] { --offset: 40px; }
  .path__node[data-slot="2"] { --offset: 70px; }
  .path__node[data-slot="3"] { --offset: 40px; }
  .path__node[data-slot="5"] { --offset: -40px; }
  .path__node[data-slot="6"] { --offset: -70px; }
  .path__node[data-slot="7"] { --offset: -40px; }
}

.node__label {
  font-size: 12px;
  color: var(--fq-text-muted);
  font-weight: 700;
  max-width: 140px;
  text-align: center;
  line-height: 1.2;
}

.node__stars {
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--fq-yellow);
  color: white;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 900;
  box-shadow: 0 2px 0 var(--fq-yellow-dark);
  white-space: nowrap;
}

/* ---------- Buttons ---------- */

.btn {
  --btn-bg: var(--fq-primary);
  --btn-shadow: var(--fq-primary-dark);
  --btn-text: white;
  min-height: var(--fq-tap);
  padding: 14px 20px;
  border: none;
  border-radius: 16px;
  font-size: 15px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
  background: var(--btn-bg);
  color: var(--btn-text);
  box-shadow: 0 4px 0 var(--btn-shadow);
  transition: transform var(--fq-fast) var(--fq-ease),
              box-shadow var(--fq-fast) var(--fq-ease),
              opacity var(--fq-fast) var(--fq-ease);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
}
.btn:hover { transform: translateY(-1px); }
.btn:active {
  transform: translateY(4px);
  box-shadow: 0 0 0 var(--btn-shadow);
}
.btn:disabled {
  --btn-bg: var(--fq-border);
  --btn-shadow: var(--fq-border-strong);
  --btn-text: var(--fq-text-muted);
  cursor: not-allowed;
  opacity: 1;
}
.btn:disabled:hover { transform: none; }
.btn:disabled:active { transform: none; box-shadow: 0 4px 0 var(--btn-shadow); }

.btn--accent { --btn-bg: var(--fq-accent); --btn-shadow: var(--fq-accent-dark); }
.btn--red    { --btn-bg: var(--fq-red);    --btn-shadow: var(--fq-red-dark); }
.btn--ghost {
  --btn-bg: transparent;
  --btn-shadow: transparent;
  --btn-text: var(--fq-text);
  box-shadow: none;
  border: 2px solid var(--fq-border-strong);
}
.btn--ghost:active { transform: none; box-shadow: none; }
.btn--sm { min-height: 40px; padding: 10px 14px; font-size: 13px; }
.btn--auto { width: auto; }

/* ---------- Cards ---------- */

.card {
  background: var(--fq-bg-elev);
  border: 2px solid var(--fq-border);
  border-radius: var(--fq-radius-lg);
  padding: 16px;
}
.card__title {
  font-size: 16px;
  font-weight: 900;
  margin: 0 0 4px;
}
.card__subtitle {
  color: var(--fq-text-muted);
  font-size: 14px;
}

/* ---------- Lesson screen ---------- */

.lesson {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--fq-bg);
}
.lesson__topbar {
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: calc(12px + var(--fq-safe-top));
  border-bottom: 1px solid var(--fq-border);
}
.lesson__close {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: none;
  background: var(--fq-bg-alt);
  font-size: 22px;
  font-weight: 900;
  color: var(--fq-text-muted);
  cursor: pointer;
}
.lesson__close:active { transform: scale(0.96); }

.progress {
  flex: 1;
  height: 16px;
  border-radius: 999px;
  background: var(--fq-bg-alt);
  overflow: hidden;
  border: 1px solid var(--fq-border);
}
.progress__fill {
  height: 100%;
  background: var(--fq-accent);
  transition: width var(--fq-med) var(--fq-ease);
  box-shadow: inset 0 4px 0 rgba(255, 255, 255, 0.3);
}
.hearts {
  color: var(--fq-red);
  font-weight: 900;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 16px;
}

.lesson__body {
  flex: 1;
  padding: 20px 16px;
  max-width: 720px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.lesson__prompt {
  font-size: 22px;
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: -0.01em;
}
.lesson__intro {
  padding: 14px 16px;
  border-radius: var(--fq-radius-md);
  background: var(--fq-primary-soft);
  color: var(--fq-text);
  font-size: 15px;
  line-height: 1.45;
  border-left: 4px solid var(--fq-primary);
}
.lesson__hint {
  font-size: 13px;
  color: var(--fq-text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Multiple choice */
.choices {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
.choice {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  border: 2px solid var(--fq-border-strong);
  border-bottom-width: 4px;
  border-radius: 16px;
  background: var(--fq-bg-elev);
  color: var(--fq-text);
  cursor: pointer;
  font-size: 15px;
  font-weight: 700;
  text-align: left;
  line-height: 1.4;
  transition: border-color var(--fq-fast), transform var(--fq-fast), background var(--fq-fast);
  min-height: var(--fq-tap);
}
.choice__badge {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--fq-bg-alt);
  border: 2px solid var(--fq-border-strong);
  display: grid;
  place-items: center;
  font-size: 13px;
  font-weight: 900;
  flex-shrink: 0;
}
.choice:hover { border-color: var(--fq-teal); }
.choice[aria-pressed="true"] {
  border-color: var(--fq-teal);
  background: var(--fq-primary-soft);
  color: var(--fq-teal-dark);
}
.choice[aria-pressed="true"] .choice__badge {
  border-color: var(--fq-teal);
  color: var(--fq-teal-dark);
  background: white;
}
.choice--correct {
  border-color: var(--fq-accent) !important;
  background: var(--fq-accent-soft) !important;
  color: var(--fq-accent-dark) !important;
}
.choice--wrong {
  border-color: var(--fq-red) !important;
  background: var(--fq-red-soft) !important;
  color: var(--fq-red-dark) !important;
}

/* True/False */
.tf {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.tf .choice { justify-content: center; font-size: 18px; padding: 24px 12px; text-align: center; }

/* Fill in blank */
.fill {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.fill input {
  flex: 1;
  min-width: 0;
  padding: 14px 16px;
  border-radius: 14px;
  border: 2px solid var(--fq-border-strong);
  border-bottom-width: 4px;
  background: var(--fq-bg-elev);
  color: var(--fq-text);
  font-size: 16px;
  font-weight: 700;
  min-height: var(--fq-tap);
  outline: none;
}
.fill input:focus {
  border-color: var(--fq-teal);
}
.fill input.correct {
  border-color: var(--fq-accent);
  background: var(--fq-accent-soft);
  color: var(--fq-accent-dark);
}
.fill input.wrong {
  border-color: var(--fq-red);
  background: var(--fq-red-soft);
  color: var(--fq-red-dark);
}

/* Match */
.match {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.match .choice { padding: 12px; font-size: 14px; min-height: 56px; }
.match .choice[data-side="left"] { border-color: var(--fq-primary); }
.match .choice[data-side="right"] { border-color: var(--fq-purple); }
.match .choice[data-matched="true"] {
  background: var(--fq-accent-soft);
  border-color: var(--fq-accent);
  color: var(--fq-accent-dark);
  cursor: default;
  opacity: 0.85;
}
.match .choice[aria-pressed="true"] {
  background: var(--fq-primary-soft);
  border-color: var(--fq-teal);
}

/* ---------- Footer / Check bar ---------- */

.lesson__footer {
  position: sticky;
  bottom: 0;
  padding: 16px 16px calc(16px + var(--fq-safe-bottom));
  background: var(--fq-bg);
  border-top: 1px solid var(--fq-border);
}
.lesson__footer .btn { max-width: 720px; margin: 0 auto; display: flex; }

.result {
  padding: 14px 16px;
  border-radius: var(--fq-radius-md);
  font-weight: 700;
  font-size: 14px;
  line-height: 1.45;
  margin: 0 auto 12px;
  max-width: 720px;
}
.result--correct {
  background: var(--fq-accent-soft);
  color: var(--fq-accent-dark);
  border: 2px solid var(--fq-accent);
}
.result--wrong {
  background: var(--fq-red-soft);
  color: var(--fq-red-dark);
  border: 2px solid var(--fq-red);
}
.result strong {
  display: block;
  font-weight: 900;
  font-size: 15px;
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ---------- Complete screen ---------- */

.complete {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px;
  padding-top: calc(24px + var(--fq-safe-top));
  padding-bottom: calc(24px + var(--fq-safe-bottom));
  background: linear-gradient(160deg, var(--fq-accent), #2E8B00);
  color: white;
  text-align: center;
}
.complete__inner {
  max-width: 480px;
  width: 100%;
  animation: pop var(--fq-med) var(--fq-ease);
}
.complete__badge {
  width: 132px;
  height: 132px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  display: grid;
  place-items: center;
  margin: 0 auto 20px;
  font-size: 56px;
  box-shadow: inset 0 -10px 0 rgba(0,0,0,0.1), 0 20px 60px rgba(0,0,0,0.25);
}
.complete__title {
  font-size: 30px;
  font-weight: 900;
  margin: 0 0 6px;
  letter-spacing: -0.02em;
}
.complete__subtitle {
  opacity: 0.9;
  font-size: 15px;
  margin-bottom: 22px;
}
.complete__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 22px;
}
.complete__stat {
  background: rgba(255, 255, 255, 0.14);
  padding: 14px 8px;
  border-radius: 16px;
  backdrop-filter: blur(8px);
}
.complete__stat-label {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.85;
  font-weight: 800;
}
.complete__stat-value {
  font-size: 22px;
  font-weight: 900;
  margin-top: 4px;
}
.complete__actions {
  display: grid;
  gap: 10px;
}
.complete .btn { color: var(--fq-text); }
.complete .btn--accent {
  --btn-bg: white;
  --btn-shadow: rgba(0,0,0,0.2);
  --btn-text: var(--fq-accent-dark);
}
.complete .btn--ghost {
  --btn-text: white;
  border-color: rgba(255,255,255,0.4);
}

/* ---------- Profile screen ---------- */

.profile__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 20px 0;
}
.stat-card {
  padding: 16px;
  border-radius: var(--fq-radius-lg);
  background: var(--fq-bg-elev);
  border: 2px solid var(--fq-border);
  text-align: left;
}
.stat-card__label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--fq-text-muted);
  font-weight: 800;
}
.stat-card__value {
  font-size: 28px;
  font-weight: 900;
  margin-top: 6px;
}
.stat-card__hint {
  color: var(--fq-text-muted);
  font-size: 13px;
  margin-top: 2px;
}

.settings {
  display: grid;
  gap: 8px;
  margin-top: 20px;
}
.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  background: var(--fq-bg-elev);
  border: 2px solid var(--fq-border);
  border-radius: var(--fq-radius-md);
  font-weight: 700;
  gap: 12px;
}
.settings-row .btn { width: auto; }

/* ---------- Bottom nav (optional) ---------- */

.bottomnav {
  position: sticky;
  bottom: 0;
  background: var(--fq-bg);
  border-top: 1px solid var(--fq-border);
  padding: 8px 0 calc(8px + var(--fq-safe-bottom));
  z-index: 4;
}
.bottomnav__inner {
  max-width: 720px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
  padding: 0 8px;
}
.nav-btn {
  background: transparent;
  border: none;
  color: var(--fq-text-muted);
  padding: 10px 4px;
  display: grid;
  place-items: center;
  gap: 2px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 800;
  border-radius: 12px;
}
.nav-btn__icon {
  font-size: 22px;
}
.nav-btn[aria-current="page"] {
  color: var(--fq-primary);
  background: var(--fq-primary-soft);
}

/* ---------- Animations ---------- */

@keyframes bob {
  0%, 100% { transform: translateX(var(--offset, 0px)) translateY(0); }
  50%      { transform: translateX(var(--offset, 0px)) translateY(-6px); }
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes pop {
  0%   { transform: scale(0.9); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}
.shake { animation: shake 320ms ease-in-out; }

/* ---------- Utilities ---------- */

.mt-lg { margin-top: 24px; }
.mt-md { margin-top: 16px; }
.mt-sm { margin-top: 8px; }
.mb-md { margin-bottom: 16px; }
.center { text-align: center; }
.mono { font-variant-numeric: tabular-nums; }

/* ---------- Onboarding ---------- */

.onboarding {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px;
  padding-top: calc(24px + var(--fq-safe-top));
  padding-bottom: calc(24px + var(--fq-safe-bottom));
  background: linear-gradient(160deg, var(--fq-primary), #4E2AA6 95%);
  color: white;
  text-align: center;
}
.onboarding__inner {
  max-width: 480px;
  width: 100%;
  animation: fadeIn var(--fq-med) var(--fq-ease);
}
.onboarding__badge {
  width: 132px;
  height: 132px;
  border-radius: 32px;
  margin: 0 auto 24px;
  background: rgba(255, 255, 255, 0.15);
  display: grid;
  place-items: center;
  font-size: 52px;
  font-weight: 900;
  box-shadow: inset 0 -10px 0 rgba(0,0,0,0.1), 0 20px 60px rgba(0,0,0,0.25);
}
.onboarding__title {
  font-size: 32px;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}
.onboarding__subtitle {
  opacity: 0.9;
  margin-bottom: 28px;
  font-size: 16px;
  line-height: 1.5;
}
.onboarding .btn { color: var(--fq-text); }
.onboarding .btn--accent {
  --btn-bg: white;
  --btn-shadow: rgba(0,0,0,0.2);
  --btn-text: var(--fq-primary);
}

/* ---------- Toast ---------- */

.toast {
  position: fixed;
  top: calc(20px + var(--fq-safe-top));
  left: 50%;
  transform: translateX(-50%);
  background: var(--fq-text);
  color: var(--fq-bg);
  padding: 10px 16px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 13px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.3);
  z-index: 100;
  opacity: 0;
  transition: opacity var(--fq-med), transform var(--fq-med);
  pointer-events: none;
}
.toast--visible {
  opacity: 1;
  transform: translateX(-50%) translateY(4px);
}

/* ---------- Reduce motion ---------- */

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* =============================================================
   v2 EXTENSIONS
   ============================================================= */

/* ---------- Path picker ---------- */
.page--picker { padding-top: 24px; }
.pathgrid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
@media (min-width: 720px) {
  .pathgrid { grid-template-columns: 1fr 1fr; }
}
.pathcard {
  position: relative;
  padding: 22px 20px 20px;
  border-radius: var(--fq-radius-xl);
  border: none;
  color: white;
  cursor: pointer;
  text-align: left;
  background: linear-gradient(160deg, var(--pc-color), var(--pc-color2));
  box-shadow: 0 8px 0 rgba(0,0,0,0.15), 0 12px 30px rgba(0,0,0,0.15);
  transition: transform var(--fq-fast) var(--fq-ease);
  overflow: hidden;
}
.pathcard::after {
  content: "";
  position: absolute;
  right: -40px; top: -40px;
  width: 180px; height: 180px;
  background: radial-gradient(circle at center, rgba(255,255,255,0.2), transparent 70%);
  pointer-events: none;
}
.pathcard:hover { transform: translateY(-2px); }
.pathcard:active { transform: translateY(4px); box-shadow: 0 4px 0 rgba(0,0,0,0.15), 0 6px 15px rgba(0,0,0,0.1); }
.pathcard--active { outline: 4px solid var(--fq-accent); outline-offset: 2px; }
.pathcard__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px; height: 56px;
  border-radius: 16px;
  background: rgba(255,255,255,0.18);
  font-size: 28px;
  margin-bottom: 10px;
}
.pathcard__code {
  font-size: 11px;
  letter-spacing: 0.16em;
  opacity: 0.9;
  font-weight: 800;
  text-transform: uppercase;
}
.pathcard__title {
  font-size: 22px;
  font-weight: 900;
  margin: 4px 0 6px;
  letter-spacing: -0.01em;
}
.pathcard__sub { opacity: 0.9; font-weight: 600; font-size: 14px; line-height: 1.4; }
.pathcard__meta {
  margin-top: 12px;
  font-size: 12px;
  letter-spacing: 0.08em;
  opacity: 0.85;
  font-weight: 800;
  text-transform: uppercase;
}
.pathcard__progress {
  margin-top: 10px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  background: rgba(255,255,255,0.18);
  border-radius: 999px;
  font-weight: 900;
  font-size: 13px;
}
.pathcard__progress--new { background: rgba(0,0,0,0.25); }

/* ---------- Study sections ---------- */
.sec-text { line-height: 1.6; font-size: 15.5px; }
.sec-text p { margin: 0 0 12px; }
.sec-text p:last-child { margin: 0; }
.sec-text strong { color: var(--fq-primary); }
.sec-text code {
  background: var(--fq-bg-alt);
  padding: 2px 6px;
  border-radius: 6px;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.9em;
}

.callout {
  padding: 14px 16px;
  border-radius: var(--fq-radius-md);
  border-left: 4px solid var(--fq-primary);
  background: var(--fq-primary-soft);
}
.callout__title {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 900;
  margin-bottom: 4px;
  color: var(--fq-primary);
}
.callout__body { font-size: 14.5px; line-height: 1.5; }
.callout--tip     { border-left-color: var(--fq-accent);    background: var(--fq-accent-soft); }
.callout--tip .callout__title { color: var(--fq-accent-dark); }
.callout--warn    { border-left-color: var(--fq-orange);    background: rgba(255, 150, 0, 0.1); }
.callout--warn .callout__title { color: var(--fq-orange-dark); }
.callout--success { border-left-color: var(--fq-accent);    background: var(--fq-accent-soft); }
.callout--success .callout__title { color: var(--fq-accent-dark); }

.sec-table {
  overflow-x: auto;
  border-radius: var(--fq-radius-md);
  border: 2px solid var(--fq-border);
  background: var(--fq-bg-elev);
}
.sec-table table {
  border-collapse: collapse;
  width: 100%;
  font-size: 14px;
}
.sec-table th, .sec-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--fq-border);
}
.sec-table th {
  background: var(--fq-bg-alt);
  font-weight: 900;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fq-text-muted);
}
.sec-table tr:last-child td { border-bottom: none; }

.compare {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
@media (min-width: 560px) {
  .compare { grid-template-columns: 1fr 1fr; }
}
.compare__card {
  padding: 14px 16px;
  border-radius: var(--fq-radius-md);
  border: 2px solid var(--fq-border);
  background: var(--fq-bg-elev);
}
.compare__title {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 900;
  color: var(--fq-primary);
}
.compare__card ul { margin: 0; padding-left: 20px; font-size: 14.5px; line-height: 1.55; }
.compare__card li { margin-bottom: 4px; }

.keyterms {
  padding: 14px 16px;
  border-radius: var(--fq-radius-md);
  background: var(--fq-bg-alt);
  margin: 0;
}
.keyterms dt {
  font-weight: 900;
  color: var(--fq-primary);
  margin-top: 8px;
  font-size: 15px;
}
.keyterms dt:first-child { margin-top: 0; }
.keyterms dd { margin: 2px 0 6px; font-size: 14.5px; line-height: 1.5; }

.statblock {
  text-align: center;
  padding: 18px 12px;
  border-radius: var(--fq-radius-md);
  background: linear-gradient(160deg, var(--fq-primary), var(--fq-primary-dark));
  color: white;
}
.statblock__value {
  font-size: 44px;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1;
}
.statblock__label { font-weight: 800; margin-top: 4px; font-size: 14px; }
.statblock__desc { opacity: 0.85; margin-top: 6px; font-size: 13px; }

.sec-diagram {
  margin: 0;
  padding: 14px;
  border-radius: var(--fq-radius-md);
  border: 2px solid var(--fq-border);
  background: var(--fq-bg-elev);
}
.sec-diagram__svg { display: block; width: 100%; }
.sec-diagram__svg svg { display: block; max-width: 100%; height: auto; }
.sec-diagram figcaption {
  margin-top: 8px;
  font-size: 13px;
  color: var(--fq-text-muted);
  text-align: center;
  font-weight: 700;
}

/* ---------- Study progress bar variant ---------- */
.progress__fill--study { background: var(--fq-teal); }

.lesson__meta {
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.14em;
  padding: 6px 10px;
  background: var(--fq-bg-alt);
  color: var(--fq-text-muted);
  border-radius: 999px;
}

/* ---------- Combo ---------- */
.combo {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--fq-orange), var(--fq-red));
  color: white;
  font-weight: 900;
  font-size: 13px;
  box-shadow: 0 3px 0 var(--fq-red-dark);
  animation: pop 300ms var(--fq-ease);
}

/* ---------- Hint ---------- */
.hintbtn {
  align-self: flex-start;
  background: var(--fq-purple);
  color: white;
  border: none;
  padding: 10px 14px;
  border-radius: 12px;
  font-weight: 800;
  font-size: 13px;
  cursor: pointer;
  box-shadow: 0 3px 0 var(--fq-purple-dark);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.hintbtn:active { transform: translateY(3px); box-shadow: 0 0 0 var(--fq-purple-dark); }
.hintbox {
  padding: 12px 14px;
  border-radius: var(--fq-radius-md);
  background: rgba(206, 130, 255, 0.15);
  border-left: 4px solid var(--fq-purple);
  font-size: 14.5px;
  line-height: 1.4;
}

/* ---------- Multi-select ---------- */
.choices--multi .choice {
  gap: 12px;
}
.check-badge {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  border: 2px solid var(--fq-border-strong);
  background: var(--fq-bg-alt);
  color: var(--fq-accent-dark);
  font-weight: 900;
  flex-shrink: 0;
}
.choice--picked { border-color: var(--fq-teal); background: var(--fq-primary-soft); }
.choice--picked .check-badge {
  border-color: var(--fq-teal);
  background: var(--fq-teal);
  color: white;
}

/* ---------- Order (reorder) ---------- */
.orderlist {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.orderrow {
  display: grid;
  grid-template-columns: 32px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border: 2px solid var(--fq-border-strong);
  border-bottom-width: 4px;
  border-radius: 14px;
  background: var(--fq-bg-elev);
}
.orderrow__num {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--fq-primary);
  color: white;
  font-weight: 900;
}
.orderrow__text { font-weight: 700; font-size: 14.5px; line-height: 1.4; }
.orderrow__ctrl { display: flex; gap: 4px; }
.orderctl {
  width: 32px;
  height: 32px;
  border: 2px solid var(--fq-border-strong);
  border-radius: 8px;
  background: var(--fq-bg-alt);
  cursor: pointer;
  font-weight: 900;
}
.orderctl:disabled { opacity: 0.35; cursor: not-allowed; }
.orderrow--correct { border-color: var(--fq-accent); background: var(--fq-accent-soft); }
.orderrow--wrong   { border-color: var(--fq-red);    background: var(--fq-red-soft); }

/* ---------- Categorize ---------- */
.catwrap { display: flex; flex-direction: column; gap: 14px; }
.catbank {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px;
  border: 2px dashed var(--fq-border-strong);
  border-radius: var(--fq-radius-md);
  background: var(--fq-bg-alt);
  min-height: 60px;
}
.chip {
  padding: 8px 12px;
  border-radius: 12px;
  border: 2px solid var(--fq-primary);
  background: var(--fq-bg-elev);
  color: var(--fq-text);
  font-weight: 700;
  font-size: 13.5px;
  cursor: pointer;
}
.chip[aria-pressed="true"] {
  background: var(--fq-primary);
  color: white;
  box-shadow: 0 3px 0 var(--fq-primary-dark);
}
.chip--placed { border-color: var(--fq-teal); background: var(--fq-primary-soft); }
.chip--correct { border-color: var(--fq-accent); background: var(--fq-accent-soft); color: var(--fq-accent-dark); }
.chip--wrong   { border-color: var(--fq-red);    background: var(--fq-red-soft);    color: var(--fq-red-dark); }

.catbuckets {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
@media (min-width: 560px) {
  .catbuckets { grid-template-columns: 1fr 1fr; }
}
.bucket {
  padding: 12px;
  border-radius: var(--fq-radius-md);
  border: 2px solid var(--fq-primary);
  background: var(--fq-bg-elev);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.bucket__label {
  font-weight: 900;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fq-primary);
}
.bucket__body {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  min-height: 32px;
}
.bucket__drop {
  align-self: flex-start;
  padding: 6px 10px;
  border-radius: 8px;
  border: 2px dashed var(--fq-border-strong);
  background: transparent;
  color: var(--fq-text-muted);
  font-weight: 800;
  font-size: 12px;
  cursor: pointer;
}
.bucket__drop:disabled { opacity: 0.4; cursor: not-allowed; }
.bucket__drop:not(:disabled):hover { border-color: var(--fq-teal); color: var(--fq-teal); }

/* ---------- Hotspot ---------- */
.hotspot {
  margin: 0;
  padding: 12px;
  border-radius: var(--fq-radius-md);
  background: var(--fq-bg-elev);
  border: 2px solid var(--fq-border);
}
.hotspot__svg svg { width: 100%; height: auto; display: block; }
.hotspot__spot {
  fill: var(--fq-primary);
  fill-opacity: 0.5;
  stroke: white;
  stroke-width: 2;
  cursor: pointer;
  transition: fill-opacity 120ms;
}
.hotspot__spot:hover { fill-opacity: 0.75; }
.hotspot__spot--picked  { fill: var(--fq-teal); fill-opacity: 0.85; }
.hotspot__spot--correct { fill: var(--fq-accent); fill-opacity: 0.85; }
.hotspot__spot--wrong   { fill: var(--fq-red);    fill-opacity: 0.85; }
.hotspot__caption {
  margin-top: 8px;
  text-align: center;
  font-weight: 800;
  color: var(--fq-text-muted);
  font-size: 13px;
}

/* ---------- Scenario ---------- */
.scenario {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.scenario__setup {
  padding: 14px 16px;
  border-radius: var(--fq-radius-md);
  background: var(--fq-bg-alt);
  border-left: 4px solid var(--fq-purple);
  font-size: 14.5px;
  line-height: 1.5;
}
.scenario__stepmeta {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fq-purple-dark);
  font-weight: 800;
}
.scenario__hint { color: var(--fq-purple-dark); }
.scenario__footer { margin-top: 6px; }
.scenario__footer .btn { max-width: none; }

/* ---------- Complete + confetti + levelup ---------- */
.confetti {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 5;
}
.complete__inner { position: relative; z-index: 6; }
.levelup {
  margin: 10px auto 18px;
  display: inline-block;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,0.2);
  color: white;
  font-weight: 900;
  letter-spacing: 0.08em;
  font-size: 13px;
  animation: pop 420ms var(--fq-ease);
}
.newbadges {
  margin: 12px 0 22px;
  padding: 12px;
  background: rgba(255,255,255,0.14);
  border-radius: 16px;
  backdrop-filter: blur(8px);
}
.newbadges__label {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 900;
  margin-bottom: 8px;
}
.newbadges__row {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Badges ---------- */
.badgesec { margin: 22px 0; }
.badgesec__title {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fq-text-muted);
  font-weight: 900;
  margin: 0 0 10px;
}
.badgegrid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
}
.badge {
  padding: 14px 10px;
  border-radius: 16px;
  border: 2px solid var(--fq-border);
  background: var(--fq-bg-elev);
  text-align: center;
  position: relative;
}
.badge__icon {
  font-size: 32px;
  margin-bottom: 4px;
  line-height: 1;
}
.badge__title { font-weight: 900; font-size: 13.5px; }
.badge__desc { font-size: 12px; color: var(--fq-text-muted); margin-top: 4px; line-height: 1.35; }
.badge__xp {
  margin-top: 6px;
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--fq-yellow);
  color: var(--fq-yellow-dark);
  font-size: 11px;
  font-weight: 900;
}
.badge--bronze  { border-color: #C08052; }
.badge--silver  { border-color: #A8B4BE; }
.badge--gold    { border-color: #F1B900; }
.badge--platinum{ border-color: var(--fq-purple); box-shadow: 0 0 0 3px rgba(206,130,255,0.15); }
.badge--locked { filter: grayscale(1) opacity(0.5); }

/* ---------- Level bar ---------- */
.levelbar {
  position: relative;
  height: 24px;
  background: var(--fq-bg-alt);
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid var(--fq-border);
  margin: 4px 0 16px;
}
.levelbar__fill {
  position: absolute;
  inset: 0 auto 0 0;
  background: linear-gradient(90deg, var(--fq-primary), var(--fq-purple));
  transition: width var(--fq-med) var(--fq-ease);
}
.levelbar__label {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-weight: 900;
  font-size: 12px;
  color: var(--fq-text);
  mix-blend-mode: difference;
  color: white;
}

/* ---------- Improve intro on lesson (was inline) ---------- */
.lesson__intro {
  padding: 12px 14px;
  border-radius: var(--fq-radius-md);
  background: var(--fq-primary-soft);
  color: var(--fq-text);
  font-size: 14.5px;
  border-left: 4px solid var(--fq-primary);
  margin: 0;
  line-height: 1.5;
}