/* ============================================================
   FrontierIQ
   Mobile-first gamified PWA styling
   ============================================================ */

:root {
  /* Brand — Frontier palette: Electric Aqua → Frontier Violet on space navy.
     Softer than the previous flat Microsoft blue; issue #2 fix. */
  --fq-primary: #8A6BFF;         /* Frontier Violet */
  --fq-primary-dark: #6B4BE6;    /* deeper violet — CTAs pressed, active */
  --fq-primary-soft: #EEE8FF;    /* soft violet tint — quiet backgrounds */

  --fq-aqua: #45E6FF;            /* Electric Aqua — highlights, gradient starts */
  --fq-aqua-dark: #2ECFEA;
  --fq-aqua-soft: #DFF9FF;

  --fq-space: #0B0E1A;           /* Space navy — dark hero surfaces */
  --fq-space-warm: #131B3A;      /* Slightly-warmer space, adds depth to gradients */

  --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;

  /* ---------------------------------------------------------------------
     Accessible text tokens (WCAG 2.2 AA, #157)
     ---------------------------------------------------------------------
     The brand colours above are tuned for vivid *surfaces* and are correct as
     they are. What failed the audit was putting small text on or in them.

     Two families solve that without touching a single brand colour:

     `--fq-*-text`  A darkened version of a brand hue, for coloured TEXT on a
                    light background. Each passes >=4.6:1 on both #FFFFFF and
                    --fq-bg-alt (#F7F7F7); --fq-primary-text also clears
                    --fq-primary-soft, where the level chip sits.

     `--fq-on-color` Dark ink for text ON a vivid surface. White text scored
                    2.09:1 on --fq-accent and 2.18:1 on --fq-orange — far
                    below AA. Space navy scores 9.21:1 and 8.80:1 on those same
                    backgrounds, so the fix keeps every vivid colour and simply
                    stops using white ink on it. Most reach AAA. */
  --fq-accent-text: #377F01;   /* 5.00:1 on white, 4.67:1 on bg-alt */
  --fq-orange-text: #A36000;   /* 4.96:1 / 4.63:1 */
  --fq-teal-text: #0776AB;     /* 5.01:1 / 4.68:1 */
  --fq-purple-text: #A61CFF;   /* 4.96:1 / 4.63:1 */
  --fq-primary-text: #6840FF;  /* 5.58:1 / 5.21:1 / 4.68:1 on primary-soft */
  --fq-on-color: var(--fq-space);

  /* Neutral (light) */
  --fq-bg: #FFFFFF;
  --fq-bg-alt: #F7F7F7;
  --fq-bg-elev: #FFFFFF;
  --fq-text: #3C3C3C;
  /* WCAG 1.4.3 needs 4.5:1 for text below 18.66px bold / 24px. The previous
     #777777 measured 4.48:1 on white and 4.18:1 on --fq-bg-alt, failing on both
     (34 nodes in the axe audit). #6E6E6E is the smallest darkening that passes
     on BOTH surfaces: 5.10:1 and 4.76:1. */
  --fq-text-muted: #6E6E6E;
  --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;

    /* The --fq-*-text tokens are darkened for light surfaces, which inverts the
       problem here: #377F01 scores 2.95:1 on --fq-bg-alt. Against dark surfaces
       the original brand colours are already well clear of AA (6.4-8.1:1), so
       they simply revert. Only the violet needs lifting. */
    --fq-accent-text: var(--fq-accent);
    --fq-orange-text: var(--fq-orange);
    --fq-teal-text: var(--fq-teal);
    --fq-purple-text: var(--fq-purple);
    --fq-primary-text: #9F86FF;  /* 4.69-5.87:1 across the dark surfaces */
  }
}

/* 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;

  /* See the prefers-color-scheme block above for why these revert. */
  --fq-accent-text: var(--fq-accent);
  --fq-orange-text: var(--fq-orange);
  --fq-teal-text: var(--fq-teal);
  --fq-purple-text: var(--fq-purple);
  --fq-primary-text: #9F86FF;
}
[data-theme="light"] {
  --fq-bg: #FFFFFF;
  --fq-bg-alt: #F7F7F7;
  --fq-bg-elev: #FFFFFF;
  --fq-text: #3C3C3C;
  --fq-text-muted: #6E6E6E;
  --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;

  /* Restated, not inherited. On a dark-OS device the prefers-color-scheme block
     above has already rewritten these on :root, and an explicit light choice has
     to undo that or coloured text stays tuned for a dark background. */
  --fq-accent-text: #377F01;
  --fq-orange-text: #A36000;
  --fq-teal-text: #0776AB;
  --fq-purple-text: #A61CFF;
  --fq-primary-text: #6840FF;
}

/* ---------- 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;
  /* Prevent the mobile viewport from doing surprising things when the
     software keyboard opens or the address bar collapses (#91). */
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

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

/* Interactive controls get 44px minimum hit area on touch — WCAG target size
   AAA (#91). Also opt into fast-tap semantics via `touch-action: manipulation`
   so mobile browsers skip the 300ms click delay. */
button, [role="button"], input, select, textarea, .steppill, .filterchip, .coursechip {
  touch-action: manipulation;
}

/* Portrait-only banner: manifest sets orientation:portrait-primary, but
   browsers can still show the page in landscape when not installed. Hide
   content and show a rotate hint on small landscape screens. */
@media (max-width: 900px) and (orientation: landscape) {
  #app { filter: blur(2px); pointer-events: none; }
  body::after {
    content: "Please rotate to portrait 📱";
    position: fixed;
    inset: 0;
    display: grid;
    place-items: center;
    text-align: center;
    padding: 40px 24px;
    background: var(--fq-bg);
    color: var(--fq-text);
    font-size: 18px;
    font-weight: 800;
    z-index: 999999;
  }
}

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:
    radial-gradient(80% 60% at 20% 15%, rgba(69, 230, 255, 0.18), transparent 60%),
    radial-gradient(70% 55% at 90% 85%, rgba(138, 107, 255, 0.28), transparent 65%),
    var(--fq-space);
  color: white;
  gap: 12px;
  animation: fadeIn var(--fq-med) var(--fq-ease);
}
.splash__logo {
  width: 96px;
  height: 96px;
  border-radius: 28px;
  background: linear-gradient(160deg, var(--fq-aqua), var(--fq-primary));
  display: grid;
  place-items: center;
  box-shadow:
    0 0 40px rgba(138, 107, 255, 0.35),
    inset 0 -6px 0 rgba(0, 0, 0, 0.15),
    0 12px 30px rgba(0, 0, 0, 0.35);
}
.splash__mark {
  font-weight: 900;
  font-size: 40px;
  letter-spacing: -0.02em;
  color: white;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}
.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: 6px;
  font-weight: 900;
  font-size: 18px;
  /* The wordmark is 18px, just under the 18.66px bold threshold for WCAG large
     text, so it needs the full 4.5:1. --fq-primary is 3.73:1 on white. */
  color: var(--fq-primary-text);
  letter-spacing: -0.01em;
}
.topbar__mark, .topbar__brandtext {
  background: transparent;
  border: none;
  padding: 4px 6px;
  border-radius: 8px;
  font: inherit;
  color: inherit;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.topbar__mark { padding: 4px; }
.topbar__mark:hover, .topbar__brandtext:hover { background: var(--fq-bg-alt); }
.topbar__mark:active { transform: scale(0.94); }
.topbar__brand svg,
.topbar__brand img {
  width: 26px;
  height: 26px;
}

/* ---------- Rocket easter egg (#77) ---------- */
.rocket-eastr { overflow: hidden; }
.rocket-eastr__rocket {
  position: absolute;
  bottom: 30%;
  left: 50%;
  width: 96px;
  height: 96px;
  transform: translateX(-50%);
  animation: rocket-liftoff 2.4s cubic-bezier(0.5, 0, 0.5, 1) both;
  filter: drop-shadow(0 20px 40px rgba(255, 200, 0, 0.6));
  pointer-events: none;
  z-index: 2;
}
@keyframes rocket-liftoff {
  0%   { transform: translate(-50%, 0) rotate(-4deg) scale(1); opacity: 1; }
  20%  { transform: translate(-50%, -20px) rotate(2deg) scale(1.03); }
  60%  { transform: translate(-50%, -260px) rotate(-8deg) scale(0.9); opacity: 1; }
  100% { transform: translate(-50%, -820px) rotate(-24deg) scale(0.5); opacity: 0; }
}
.rocket-eastr__panel {
  background: var(--fq-bg-elev);
  color: var(--fq-text);
  border-radius: var(--fq-radius-lg, 16px);
  border: 1px solid var(--fq-border);
  max-width: 460px;
  width: 100%;
  padding: 28px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  text-align: center;
  z-index: 1;
  animation: appmodal-pop 380ms 1.6s var(--fq-ease) both;
  opacity: 0;
}
.rocket-eastr__title {
  margin: 0 0 6px;
  font-size: 24px;
  font-weight: 900;
  letter-spacing: -0.02em;
  background: linear-gradient(90deg, #45E6FF, #8A6BFF);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.rocket-eastr__subtitle {
  margin: 0 0 18px;
  color: var(--fq-text-muted);
  font-size: 14.5px;
}
.rocket-eastr__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin: 0 0 16px;
}
.rocket-eastr__stat {
  background: var(--fq-bg-alt);
  border-radius: var(--fq-radius-md);
  padding: 10px 4px;
}
.rocket-eastr__stat-icon { font-size: 20px; }
.rocket-eastr__stat-value {
  font-size: 18px;
  font-weight: 900;
  color: var(--fq-text);
  margin-top: 2px;
}
.rocket-eastr__stat-label {
  font-size: 10.5px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--fq-text-muted);
  font-weight: 800;
}
@media (max-width: 400px) {
  .rocket-eastr__stats { grid-template-columns: repeat(2, 1fr); }
}
.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--battery { color: var(--fq-accent-text); }
.stat--level  { color: var(--fq-primary-text); background: var(--fq-primary-soft); border-color: var(--fq-primary); }
.stat--gem    { color: var(--fq-purple-text); }
.stat--level { border: none; cursor: pointer; }
.stat--action { border: none; cursor: pointer; }
.stat--action:hover { background: var(--fq-bg-elev); }
.stat--action:focus-visible {
  outline: 2px solid var(--fq-primary);
  outline-offset: 2px;
}

/* Mobile header hardening (#105) — hide the "FrontierIQ" text on narrow
   viewports so the compact indicators (course chip + level + streak +
   gems + battery) all fit on one row. Rocket mark stays visible so the
   brand + easter egg surface never disappear. */
@media (max-width: 480px) {
  .topbar__brandtext { display: none; }
  .stats { gap: 4px; }
  .stat { padding: 5px 7px; font-size: 13px; }
}

/* Path chip strip below topbar — retired in favour of the header course chip
   + modal (issue #41). Kept hidden with the class as a no-op safety in case
   any leftover markup still references it. */
.pathstrip { display: none; }
.pathstrip__inner, .pathchip, .pathchip__icon, .pathchip__label, .pathchip__code, .pathchip__soon { display: none; }

/* ---------- Course selector chip + modal (issue #41) ---------- */

.coursechip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px 6px 8px;
  margin-left: 8px;
  border-radius: 999px;
  border: 1px solid var(--fq-border);
  background: var(--fq-bg-alt);
  color: var(--fq-text);
  font-weight: 800;
  font-size: 13px;
  cursor: pointer;
  transition: transform var(--fq-fast) var(--fq-ease), background var(--fq-fast) var(--fq-ease);
}
.coursechip:hover { background: var(--fq-primary-soft); }
.coursechip:active { transform: translateY(1px); }
.coursechip__icon { font-size: 15px; }
.coursechip__code { letter-spacing: 0.02em; }
.coursechip__caret { font-size: 10px; opacity: 0.55; }

/* The dialog is anchored to a stable top offset rather than vertically
   centered. Centering made the modal slide up and down every time its content
   height changed — on each filter toggle, each search keystroke, and each
   filter-group collapse — because the height is content-driven (#258).
   Anchoring the top edge means the search box and filters never move under
   the cursor; the results list grows and scrolls below them instead. */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(11, 14, 26, 0.55);
  backdrop-filter: blur(3px);
  display: grid;
  place-items: end center;
  /* Full-bleed on phones (#452): the padded bottom-sheet left the page
     showing through at the top, which read as unfinished. Desktop keeps the
     centred dialog below. */
  padding: 0;
  animation: fadeIn var(--fq-fast) var(--fq-ease);
}
@media (min-width: 640px) {
  .modal-backdrop {
    place-items: start center;
    padding: 0 24px;
    /* Stable offset: the modal's top edge sits here regardless of content. */
    padding-top: clamp(24px, 8vh, 96px);
  }
}

.modal {
  width: 100%;
  max-width: 560px;
  /* Full height on phones so nothing shows behind it. The desktop override
     below restores the windowed dialog. */
  max-height: 100dvh;
  height: 100dvh;
  padding-top: var(--fq-safe-top);
  padding-bottom: var(--fq-safe-bottom);
  background: var(--fq-bg-elev);
  border-radius: 0;
  box-shadow: 0 24px 60px rgba(0,0,0,0.35);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
@media (min-width: 640px) {
  .modal {
    max-height: min(88vh, 720px);
    height: auto;
    padding-top: 0;
    padding-bottom: 0;
    border-radius: var(--fq-radius-xl);
  }
}

/* Reserve a stable content height so the shell doesn't resize as results
   filter down. Combined with the top anchor above, the dialog is visually
   static: only the inner results list changes. */
@media (min-width: 640px) {
  .modal--course { height: min(72vh, 640px); }
}

.modal__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--fq-border);
}
.modal__head h2 {
  margin: 0;
  font-size: 18px;
  font-weight: 900;
  color: var(--fq-text);
}
.modal__close {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  border: none;
  background: transparent;
  color: var(--fq-text-muted);
  font-size: 18px;
  cursor: pointer;
}
.modal__close:hover { background: var(--fq-bg-alt); color: var(--fq-text); }

/* Body is the flex child that absorbs the modal's fixed height, so the
   results list scrolls internally instead of resizing the dialog (#258). */
.modal__body {
  padding: 14px 18px 18px;
  overflow: auto;
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.modal__search {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--fq-radius-md);
  border: 1px solid var(--fq-border);
  background: var(--fq-bg-alt);
  color: var(--fq-text);
  font-size: 15px;
  font-weight: 600;
  flex: 0 0 auto;
}
.modal__search:focus {
  outline: 2px solid var(--fq-primary);
  outline-offset: 2px;
}

/* ---------- Result sections (#361, #363) ---------- */
.modal__section { display: flex; flex-direction: column; gap: 8px; }
.modal__section + .modal__section { margin-top: 14px; }
.modal__sectionhead {
  margin: 0;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fq-text-muted);
}
/* Recommended is the one section that is a suggestion rather than a fact, so
   it gets an accent rail to set it apart from the rest of the list (#361). */
.modal__section--recommended .modal__sectionhead { color: var(--fq-primary-dark); }
.modal__section--recommended .courseresult {
  border-left: 3px solid var(--fq-primary);
}

.modal__filterzone { flex: 0 0 auto; }

/* ---------- Collapsible filter groups (#257) ---------- */
.modal__filtertoggle {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  background: transparent;
  border: none;
  padding: 4px 0;
  cursor: pointer;
  color: var(--fq-text);
  font: inherit;
  font-weight: 800;
  text-align: left;
}
.modal__filtertoggle:hover { color: var(--fq-primary); }
.modal__filtertoggle:focus-visible {
  outline: 2px solid var(--fq-primary);
  outline-offset: 2px;
  border-radius: var(--fq-radius-sm);
}
.modal__filtercaret {
  font-size: 9px;
  opacity: 0.6;
  width: 8px;
}
/* Active-selection count — carries meaning, so it stays high-contrast. */
.modal__filtercount {
  background: var(--fq-primary);
  color: #fff;
  border-radius: 999px;
  padding: 1px 7px;
  font-size: 11px;
  font-weight: 800;
}

/* ---------- Generic in-app modal (#22, #30) ---------- */
.appmodal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(2px);
  z-index: 10000;
  display: grid;
  place-items: center;
  padding: 24px;
  animation: appmodal-fade 160ms var(--fq-ease);
}
@keyframes appmodal-fade { from { opacity: 0; } to { opacity: 1; } }

.appmodal {
  background: var(--fq-bg-elev);
  color: var(--fq-text);
  border-radius: var(--fq-radius-lg, 16px);
  border: 1px solid var(--fq-border);
  max-width: 420px;
  width: 100%;
  padding: 22px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  animation: appmodal-pop 220ms var(--fq-ease);
}
@keyframes appmodal-pop {
  from { transform: translateY(12px) scale(0.98); opacity: 0; }
  to   { transform: translateY(0)    scale(1);    opacity: 1; }
}

.appmodal__title {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--fq-text);
}
.appmodal__body {
  margin: 0;
  color: var(--fq-text-muted);
  font-size: 14.5px;
  line-height: 1.5;
}
.appmodal__meta {
  margin: 10px 0 0;
  padding: 8px 10px;
  border-radius: var(--fq-radius-md);
  background: var(--fq-bg-alt);
  color: var(--fq-text-muted);
  font-size: 13px;
  line-height: 1.4;
  word-break: break-word;
}
.appmodal__counter {
  margin-top: 6px;
  text-align: right;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--fq-text-muted);
}
.appmodal__counter--short {
  color: var(--fq-red, #d64545);
}
.shotpreview {
  margin-top: 12px;
}
.shotpreview__status {
  color: var(--fq-text-muted);
  font-size: 12.5px;
}
/* Diagnostic detail for a failed capture (#463). Deliberately small and quiet:
   it is for us, not the learner, but hiding it entirely is what left an
   Android-only failure undiagnosable. */
.shotpreview__reason {
  color: var(--fq-text-muted);
  font-size: 11px;
  opacity: 0.75;
  margin-top: 2px;
  word-break: break-word;
}
.shotpreview__toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--fq-text);
  cursor: pointer;
  margin-bottom: 8px;
}
.shotpreview__img {
  display: block;
  width: 100%;
  max-height: 180px;
  object-fit: contain;
  object-position: top;
  border-radius: var(--fq-radius-md);
  border: 1px solid var(--fq-border);
  background: var(--fq-bg);
}

/* Post-lesson sync prompt (#431). */
.syncprompt {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.syncprompt__inner {
  width: 100%;
  max-width: 460px;
  text-align: center;
}
.syncprompt__icon {
  font-size: 44px;
  line-height: 1;
  margin-bottom: 14px;
}
.syncprompt__title {
  margin: 0 0 10px;
  font-size: 24px;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--fq-text);
}
.syncprompt__body {
  margin: 0 0 12px;
  color: var(--fq-text);
  font-size: 15px;
  line-height: 1.5;
}
.syncprompt__note {
  margin: 0 0 22px;
  color: var(--fq-text-muted);
  font-size: 13px;
  line-height: 1.5;
}
.syncprompt__actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* First-run consent gate (#424) and install invite (#425). */
.consent {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  background: rgba(0, 0, 0, 0.45);
  padding: 16px;
}
.consent__card {
  width: 100%;
  max-width: 520px;
  background: var(--fq-bg-elev);
  border-radius: var(--fq-radius-lg, 16px);
  padding: 20px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.28);
}
.consent__title {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 900;
  color: var(--fq-text);
}
.consent__body {
  margin: 0 0 16px;
  color: var(--fq-text-muted);
  font-size: 14px;
  line-height: 1.5;
}
.consent__actions {
  display: flex;
  gap: 10px;
}
/* Both choices get equal width — a reject that is harder to hit than accept
   is not a real choice. The transparent border is load-bearing: .btn--ghost
   carries a 2px border that .btn--accent does not, and with flex-basis 0 the
   border sits OUTSIDE the flex base size regardless of box-sizing, which
   otherwise makes the reject button 4px wider than accept. */
.consent__actions .btn {
  flex: 1 1 0;
  min-width: 0;
  box-sizing: border-box;
  border: 2px solid transparent;
}
.consent__link {
  display: block;
  margin: 14px auto 0;
  background: none;
  border: 0;
  padding: 4px;
  color: var(--fq-primary, #0067C0);
  font-size: 13px;
  font-family: inherit;
  text-decoration: underline;
  cursor: pointer;
}
.install {
  position: fixed;
  inset: auto 0 0 0;
  z-index: 1100;
  display: flex;
  justify-content: center;
  padding: 12px;
  pointer-events: none;
}
.install__card {
  pointer-events: auto;
  width: 100%;
  max-width: 520px;
  background: var(--fq-bg-elev);
  border: 1px solid var(--fq-border);
  border-radius: var(--fq-radius-lg, 16px);
  padding: 14px 16px;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.22);
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.install__text { flex: 1 1 220px; }
.install__title {
  margin: 0 0 3px;
  font-size: 15px;
  font-weight: 800;
  color: var(--fq-text);
}
.install__body {
  margin: 0;
  color: var(--fq-text-muted);
  font-size: 13px;
  line-height: 1.4;
}
.install__actions {
  display: flex;
  gap: 8px;
  flex: 0 0 auto;
}
@media (max-width: 480px) {
  .install__actions { width: 100%; }
  .install__actions .btn { flex: 1 1 0; }
}
.appmodal__textarea {
  width: 100%;
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: var(--fq-radius-md);
  border: 1px solid var(--fq-border);
  background: var(--fq-bg);
  color: var(--fq-text);
  font-family: inherit;
  font-size: 14.5px;
  line-height: 1.45;
  resize: vertical;
  min-height: 96px;
}
.appmodal__textarea:focus {
  outline: 2px solid var(--fq-primary);
  outline-offset: 2px;
}
.appmodal__actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 18px;
}

.streakmodal {
  max-width: 560px;
}
.streakmodal__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin: 8px 0 12px;
}
.streakmodal__chip {
  background: var(--fq-bg);
  border: 1px solid var(--fq-border);
  border-radius: 10px;
  padding: 10px;
  text-align: center;
}
.streakmodal__chip strong {
  display: block;
  font-size: 16px;
}
.streakmodal__chip span {
  color: var(--fq-text-muted);
  font-size: 12px;
}
.streakmodal__weekdays,
.streakmodal__calendar {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 6px;
}
.streakmodal__weekdays {
  margin-bottom: 6px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fq-text-muted);
}
.streakmodal__weekdays span {
  text-align: center;
}
.streakmodal__legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin: 10px 0;
  color: var(--fq-text-muted);
  font-size: 11px;
}
.streakmodal__legend-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.streakmodal__today-key {
  width: 11px;
  height: 11px;
  border: 2px solid var(--fq-primary);
  border-radius: 3px;
}
.streakmodal__day {
  height: 34px;
  border-radius: 8px;
  border: 1px solid var(--fq-border);
  background: var(--fq-bg);
  color: var(--fq-text-muted);
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
  position: relative;
  padding: 2px 3px;
}
.streakmodal__day-number {
  line-height: 1;
}
.streakmodal__markers {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  height: 12px;
}
.streakmodal__marker {
  display: inline-flex;
  width: 11px;
  height: 12px;
  align-items: center;
  justify-content: center;
}
.streakmodal__marker svg {
  width: 100%;
  height: 100%;
  display: block;
}
.streakmodal__marker--flame {
  color: var(--fq-orange);
}
.streakmodal__flame-outer {
  fill: var(--fq-orange);
}
.streakmodal__flame-inner {
  fill: var(--fq-red);
}
.streakmodal__marker--freeze {
  color: #1976d2;
}
.streakmodal__day--done {
  background: color-mix(in srgb, var(--fq-accent) 20%, var(--fq-bg));
  border-color: color-mix(in srgb, var(--fq-accent) 55%, var(--fq-border));
  color: var(--fq-text);
}
.streakmodal__day--frozen {
  background: color-mix(in srgb, #1976d2 14%, var(--fq-bg));
  border-color: color-mix(in srgb, #1976d2 55%, var(--fq-border));
}
.streakmodal__day--today {
  outline: 2px solid var(--fq-primary);
  outline-offset: 1px;
}
.streakmodal__day--blank {
  border: none;
  background: transparent;
}
@media (max-width: 640px) {
  .streakmodal__stats { grid-template-columns: 1fr; }
}
.modal__filterhead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 12px;
  font-size: 12px;
  color: var(--fq-text-muted);
  font-weight: 700;
}
.modal__filterhead-label {
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.modal__clearall, .modal__clearone {
  background: transparent;
  border: 1px solid var(--fq-border);
  color: var(--fq-text);
  font-size: 11px;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 999px;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.modal__clearall:hover, .modal__clearone:hover {
  background: var(--fq-bg-alt);
  border-color: var(--fq-primary);
  color: var(--fq-primary-dark);
}
/* ---------- Filter tabs (#359) ---------- */
/* Topic / Role / Level / Product sit in one row and drive a single shared
   panel, so the filter zone keeps a stable height instead of growing a stack
   of independently expanded groups. */
.modal__filtertabs {
  display: flex;
  gap: 6px;
  margin-top: 14px;
  /* One genuine horizontal row at every width (#359). Narrow screens scroll
     the row rather than wrapping it into a second line. */
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.modal__filtertabs::-webkit-scrollbar { display: none; }
.modal__filtertab {
  flex: 0 0 auto;
  gap: 5px;
  padding: 7px 10px;
  border: 1px solid var(--fq-border);
  border-radius: 999px;
  background: var(--fq-bg);
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
}
.modal__filtertab:hover { border-color: var(--fq-primary); }
/* Open and active are independent: a tab can hold a selection while collapsed,
   which is how an active filter stays visible without being expanded. */
.modal__filtertab--open {
  border-color: var(--fq-primary);
  background: var(--fq-primary-soft);
  color: var(--fq-primary-dark);
}
.modal__filtertab--active { border-color: var(--fq-primary); }
.modal__filterpanel {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 10px;
}
.modal__filterlabel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fq-text-muted);
  font-weight: 800;
}
.modal__filterchips { display: flex; flex-wrap: wrap; gap: 6px; }
/* The shared filter panel collapses via the `hidden` attribute; its own
   display:flex would otherwise win and keep collapsed chips on screen (#359,
   ported from the per-group rule added in #257). */
.modal__filterpanel[hidden] { display: none; }

.filterchip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--fq-border);
  background: var(--fq-bg);
  color: var(--fq-text);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  text-transform: capitalize;
}
.filterchip:hover { background: var(--fq-bg-alt); }
.filterchip:focus-visible {
  outline: 2px solid var(--fq-primary);
  outline-offset: 2px;
}
.filterchip--active {
  background: var(--fq-primary);
  color: white;
  border-color: var(--fq-primary);
  box-shadow: 0 2px 8px rgba(138, 107, 255, 0.35);
}
/* Per-chip result count (#259) — "what do I get if I click this?" */
.filterchip__count {
  font-size: 10px;
  font-weight: 800;
  opacity: 0.6;
  font-variant-numeric: tabular-nums;
}
.filterchip--active .filterchip__count { opacity: 0.85; }
/* Zero-result chips stay visible (so the taxonomy is legible) but are clearly
   inert. Not colour alone — opacity + cursor + aria-disabled. */
.filterchip--empty {
  opacity: 0.4;
  cursor: not-allowed;
}
.filterchip--empty:hover { background: var(--fq-bg); }

/* Results scroll inside the fixed-height dialog rather than growing it. */
.modal__results {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
}
.modal__empty {
  color: var(--fq-text-muted);
  text-align: center;
  padding: 20px 0;
  font-weight: 600;
}

.courseresult {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-radius: var(--fq-radius-md);
  border: 1px solid var(--fq-border);
  background: var(--fq-bg-alt);
  text-align: left;
  cursor: pointer;
  transition: transform var(--fq-fast) var(--fq-ease);
}
.courseresult:hover { background: var(--fq-primary-soft); }
.courseresult:active { transform: translateY(1px); }
.courseresult--active {
  border-color: var(--fq-primary);
  background: var(--fq-primary-soft);
}
/* --fq-text-muted clears white and --fq-bg-alt but lands at 4.27:1 on the
   tinted active row, so the selected course gets a slightly darker muted. */
.courseresult--active .courseresult__sub { color: #5F5F5F; }
.courseresult__icon { font-size: 26px; flex-shrink: 0; }
.courseresult__body { flex: 1; min-width: 0; }
.courseresult__title {
  display: flex;
  gap: 8px;
  align-items: baseline;
  font-weight: 900;
  color: var(--fq-text);
}
.courseresult__code {
  font-size: 12px;
  padding: 2px 6px;
  border-radius: 6px;
  /* White on --fq-primary is 3.73:1 at 12px (#157). The deeper violet keeps the
     badge on-brand at 5.56:1. */
  background: var(--fq-primary-dark);
  color: white;
  letter-spacing: 0.03em;
}
.courseresult__sub {
  font-size: 13px;
  color: var(--fq-text-muted);
  margin-top: 3px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------- 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__duepill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.2);
  color: white;
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: 0.02em;
  backdrop-filter: blur(6px);
  border: none;
  cursor: pointer;
  font-family: inherit;
}
.hero__duepill:hover, .hero__duepill:focus-visible {
  background: rgba(255, 255, 255, 0.32);
  outline: none;
}
button.hero__duepill:active {
  transform: translateY(1px);
}

/* Review surface (#122) */
.page--review .review__state {
  text-align: center;
  padding: 40px 24px;
  color: var(--fq-text);
}

/* Skill mastery chip on hero (#123 v2) */
.hero__mastery {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.15);
  color: white;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  backdrop-filter: blur(6px);
}

/* Skill analytics section on profile (#60) */
.skills { margin-top: 12px; }
.skills__hint { color: var(--fq-text-muted); font-size: 13px; margin: 0 0 12px; }
.skills__block { margin-top: 14px; }
.skills__label {
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--fq-text-muted);
  margin-bottom: 6px;
}
.skills__row {
  display: grid;
  grid-template-columns: 130px 1fr 46px;
  gap: 8px;
  align-items: center;
  padding: 4px 0;
  font-size: 13px;
}
.skills__tag {
  color: var(--fq-text);
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.skills__theta {
  text-align: right;
  color: var(--fq-text-muted);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
}
.skills__bar {
  height: 10px;
  background: var(--fq-bg-alt);
  border-radius: 999px;
  overflow: hidden;
}
.skills__bar-fill { height: 100%; border-radius: 999px; transition: width 0.4s ease; }
.skills__bar-fill--strong { background: linear-gradient(90deg, #4CD08A, #26a341); }
.skills__bar-fill--weak { background: linear-gradient(90deg, #F5B849, #F27C4A); }
.review__badge {
  font-size: 56px;
  line-height: 1;
  margin-bottom: 12px;
}
.review__spinner {
  font-size: 40px;
  animation: review-spin 1.6s linear infinite;
  display: inline-block;
}
@keyframes review-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
.review__state h2 { margin: 8px 0 6px; }
.review__state p { color: var(--fq-text-muted); margin-bottom: 20px; }
.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);
  /* Dark ink on the vivid unit colour. White scored as low as 2.09:1 here
     (#157); this keeps every unit colour and reaches 4.66-12.38:1. */
  color: var(--fq-on-color);
  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;
  /* Was 0.9. Fading dark ink toward a vivid background costs contrast at the
     smallest type on the page, so hierarchy comes from weight and size only. */
  opacity: 1;
  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;
  /* Was rgba(0,0,0,0.15), which darkened the unit colour. That helped white
     ink and now works against the dark ink the header uses, leaving the pill
     at 3.55-3.89:1. Lightening instead pushes it to a near-white chip. */
  background: rgba(255, 255, 255, 0.92);
  border-radius: 999px;
  font-weight: 800;
  font-size: 13px;
  white-space: nowrap;
}

/* Test-out button on each unit header (#103). Starburst star + small pill
   label — subtle enough not to compete with the primary lesson path, but
   clearly discoverable. */
.unit__testout {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px 6px 8px;
  background: linear-gradient(135deg, var(--fq-yellow), var(--fq-orange));
  color: white;
  border: none;
  border-radius: 999px;
  font-weight: 900;
  font-size: 12px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15), 0 0 0 2px rgba(255, 255, 255, 0.2) inset;
  transition: transform var(--fq-fast) var(--fq-ease), box-shadow var(--fq-fast) var(--fq-ease);
  margin-right: 6px;
  touch-action: manipulation;
}
.unit__testout:hover { transform: translateY(-1px); box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2), 0 0 0 2px rgba(255, 255, 255, 0.3) inset; }
.unit__testout:active { transform: translateY(1px); }
.unit__testout-star {
  font-size: 15px;
  line-height: 1;
  filter: drop-shadow(0 0 4px rgba(255, 255, 255, 0.8));
  animation: testout-pulse 2.4s ease-in-out infinite;
}
@keyframes testout-pulse {
  0%, 100% { transform: scale(1) rotate(0deg); }
  50%      { transform: scale(1.2) rotate(15deg); }
}
@media (max-width: 480px) {
  .unit__testout-label { display: none; }
  .unit__testout { padding: 6px 8px; }
}

/* 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));
}
/* The current node hangs a START pill 32px above itself, which lands on the
   previous node's step pills at the default 20px path gap. */
.path__node[data-current="true"] { margin-top: 16px; }
.path-fab {
  position: fixed;
  right: max(18px, env(safe-area-inset-right));
  bottom: calc(86px + var(--fq-safe-bottom));
  z-index: 1200;
  width: 56px;
  height: 56px;
  border: 0;
  border-radius: 18px;
  display: grid;
  place-items: center;
  background: var(--fq-primary);
  color: white;
  font-size: 30px;
  font-weight: 1000;
  line-height: 1;
  box-shadow: 0 6px 0 var(--fq-primary-dark), 0 14px 28px rgba(0, 0, 0, 0.22);
  opacity: 0;
  pointer-events: none;
  transform: translateY(14px) scale(0.94);
  transition: opacity var(--fq-med) var(--fq-ease),
              transform var(--fq-med) var(--fq-ease),
              box-shadow var(--fq-fast) var(--fq-ease);
}
.path-fab--visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}
.path-fab--settling {
  pointer-events: none;
}
.path-fab:hover { transform: translateY(-2px) scale(1.02); }
.path-fab:active {
  transform: translateY(6px) scale(1);
  box-shadow: 0 0 0 var(--fq-primary-dark), 0 8px 18px rgba(0, 0, 0, 0.2);
}
.path-fab:focus-visible {
  outline: 3px solid var(--fq-primary);
  outline-offset: 4px;
}
/* A control that cannot be used should not be visible (#452). The FAB is
   position: fixed at a higher z-index than the modal backdrop, so it floated
   over the course sheet and invited a tap that did nothing. Hidden rather than
   restacked — same reasoning as suppressing the install invite while another
   surface owns the screen (#431). */
body[data-modal-open="true"] .path-fab {
  display: none;
}
@media (max-width: 420px) {
  .path-fab {
    right: 16px;
    bottom: calc(78px + var(--fq-safe-bottom));
  }
}
.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); }

/* Completed nodes carry their star score instead of a tick (#377). Three stars
   have to fit inside the 76px circle, so they run smaller than the 32px
   numeral used by unlocked nodes. */
.node--complete {
  background: var(--fq-accent);
  box-shadow: 0 6px 0 var(--fq-accent-dark), 0 12px 24px rgba(0, 0, 0, 0.08);
  font-size: 20px;
  letter-spacing: 1px;
}
.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;
}

/* Concept step pills — mini badges below each concept node showing the
   pedagogy steps (📖 Study / 🎯 Practice / 🏆 Mastery). One pill per group
   the concept spans. See src/app.js:renderPath (#71). */
.steppills {
  display: flex;
  gap: 6px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 4px;
}
.steppill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 10.5px;
  font-weight: 800;
  letter-spacing: 0.02em;
  border: 1.5px solid var(--fq-border);
  background: var(--fq-bg-alt);
  color: var(--fq-text-muted);
  cursor: pointer;
  transition: background var(--fq-fast) var(--fq-ease), transform var(--fq-fast) var(--fq-ease);
}
.steppill:hover:not(:disabled) {
  background: var(--fq-bg-elev);
  transform: translateY(-1px);
}
.steppill--done {
  background: var(--fq-accent-soft);
  border-color: var(--fq-accent);
  color: var(--fq-accent-dark);
}
.steppill--locked {
  opacity: 0.55;
  cursor: not-allowed;
}
.steppill--current {
  background: var(--fq-primary-soft);
  border-color: var(--fq-primary);
  color: var(--fq-primary-text);
}
.steppill__icon { font-size: 12px; }
.steppill__label { text-transform: uppercase; }

/* ---------- 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); }

/* Accent buttons carry small bold label text. White on --fq-accent is 2.08:1,
   so they use the same dark ink as other vivid surfaces (#157). */
.btn--accent { --btn-bg: var(--fq-accent); --btn-shadow: var(--fq-accent-dark); --btn-text: var(--fq-on-color); }
.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 {
  --lesson-body-pad-y: 20px;
  --lesson-body-pad-x: 16px;
  --lesson-body-gap: 20px;
  --lesson-topbar-pad-y: 12px;
  --lesson-topbar-pad-x: 16px;
  --lesson-topbar-extra-top: 28px;
  --lesson-footer-pad-y: 16px;
  --lesson-meter-headroom: 22px;
  --lesson-prompt-size: 22px;
  --lesson-prompt-line: 1.3;
  --lesson-choice-gap: 12px;
  --lesson-choice-pad-y: 16px;
  --lesson-choice-pad-x: 16px;
  --lesson-choice-font: 15px;
  --lesson-choice-line: 1.4;
  --lesson-tf-pad-y: 24px;
  --lesson-tf-pad-x: 12px;
  --lesson-tf-font: 18px;
  --lesson-fill-pad-y: 14px;
  --lesson-fill-pad-x: 16px;
  --lesson-fill-font: 16px;
  --lesson-match-gap: 10px;
  --lesson-match-pad: 12px;
  --lesson-match-font: 14px;
  --lesson-match-min: 56px;
  --lesson-result-pad-y: 14px;
  --lesson-result-pad-x: 16px;
  --lesson-result-line: 1.45;
  --lesson-hintbox-pad-y: 12px;
  --lesson-hintbox-pad-x: 14px;
  --lesson-order-gap: 8px;
  --lesson-order-pad-y: 12px;
  --lesson-order-pad-x: 14px;
  --lesson-order-text: 14.5px;
  --lesson-cat-gap: 14px;
  --lesson-chip-pad-y: 8px;
  --lesson-chip-pad-x: 12px;
  --lesson-chip-font: 13.5px;
  min-height: 100dvh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--fq-bg);
  overflow: hidden;
}
.lesson[data-fit-tier="1"] {
  --lesson-body-pad-y: 16px;
  --lesson-body-gap: 16px;
  --lesson-topbar-extra-top: 24px;
  --lesson-footer-pad-y: 14px;
  --lesson-meter-headroom: 21px;
  --lesson-choice-gap: 10px;
  --lesson-choice-pad-y: 14px;
  --lesson-choice-pad-x: 14px;
  --lesson-tf-pad-y: 20px;
  --lesson-result-pad-y: 12px;
  --lesson-hintbox-pad-y: 10px;
  --lesson-order-gap: 7px;
  --lesson-order-pad-y: 10px;
  --lesson-cat-gap: 12px;
}
.lesson[data-fit-tier="2"] {
  --lesson-body-pad-y: 14px;
  --lesson-body-gap: 12px;
  --lesson-topbar-extra-top: 20px;
  --lesson-footer-pad-y: 12px;
  --lesson-meter-headroom: 20px;
  --lesson-choice-gap: 8px;
  --lesson-choice-pad-y: 12px;
  --lesson-choice-pad-x: 14px;
  --lesson-tf-pad-y: 16px;
  --lesson-result-pad-y: 12px;
  --lesson-hintbox-pad-y: 9px;
  --lesson-order-gap: 6px;
  --lesson-order-pad-y: 9px;
  --lesson-cat-gap: 10px;
}
.lesson[data-fit-tier="3"] {
  --lesson-body-pad-y: 12px;
  --lesson-body-gap: 10px;
  --lesson-topbar-extra-top: 16px;
  --lesson-footer-pad-y: 10px;
  --lesson-meter-headroom: 19px;
  --lesson-prompt-size: 20px;
  --lesson-prompt-line: 1.25;
  --lesson-choice-gap: 8px;
  --lesson-choice-pad-y: 10px;
  --lesson-choice-pad-x: 12px;
  --lesson-choice-font: 14.5px;
  --lesson-choice-line: 1.32;
  --lesson-tf-pad-y: 12px;
  --lesson-tf-font: 16px;
  --lesson-fill-pad-y: 12px;
  --lesson-fill-font: 15px;
  --lesson-match-gap: 8px;
  --lesson-match-pad: 10px;
  --lesson-match-min: 52px;
  --lesson-result-pad-y: 11px;
  --lesson-result-line: 1.35;
  --lesson-order-pad-y: 8px;
  --lesson-order-text: 14px;
  --lesson-chip-font: 13px;
}
.lesson[data-fit-tier="4"] {
  --lesson-body-pad-y: 10px;
  --lesson-body-gap: 6px;
  --lesson-topbar-extra-top: 12px;
  --lesson-footer-pad-y: 8px;
  --lesson-meter-headroom: 18px;
  --lesson-prompt-size: 17px;
  --lesson-prompt-line: 1.22;
  --lesson-choice-gap: 5px;
  --lesson-choice-pad-y: 6px;
  --lesson-choice-pad-x: 10px;
  --lesson-choice-font: 14px;
  --lesson-choice-line: 1.28;
  --lesson-tf-pad-y: 8px;
  --lesson-tf-font: 15px;
  --lesson-fill-pad-y: 10px;
  --lesson-fill-font: 14px;
  --lesson-match-gap: 7px;
  --lesson-match-pad: 8px;
  --lesson-match-min: var(--fq-tap);
  --lesson-result-pad-y: 10px;
  --lesson-result-pad-x: 14px;
  --lesson-result-line: 1.32;
  --lesson-hintbox-pad-y: 8px;
  --lesson-hintbox-pad-x: 12px;
  --lesson-order-gap: 5px;
  --lesson-order-pad-y: 7px;
  --lesson-order-pad-x: 10px;
  --lesson-order-text: 14px;
  --lesson-cat-gap: 8px;
  --lesson-chip-pad-y: 6px;
  --lesson-chip-pad-x: 10px;
  --lesson-chip-font: 13px;
}
.lesson[data-fitting="true"] .lesson__body {
  visibility: hidden;
}
.lesson__topbar {
  padding: var(--lesson-topbar-pad-y) var(--lesson-topbar-pad-x);
  display: flex;
  align-items: flex-end;
  gap: 12px;
  padding-top: calc(var(--lesson-topbar-extra-top) + 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 {
  height: 16px;
  border-radius: 999px;
  background: var(--fq-bg-alt);
  overflow: hidden;
  border: 1px solid var(--fq-border);
}
.lesson__meter {
  position: relative;
  flex: 1;
  min-width: 0;
  padding-top: var(--lesson-meter-headroom);
}
.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);
}
.combo-indicator {
  position: absolute;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  padding: 3px 9px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--fq-yellow), var(--fq-orange));
  color: var(--fq-on-color);
  border: 1px solid rgba(11, 14, 26, 0.16);
  box-shadow: 0 8px 20px rgba(255, 150, 0, 0.24);
  font-size: 11px;
  line-height: 1;
  font-weight: 1000;
  letter-spacing: 0.12em;
  white-space: nowrap;
  pointer-events: none;
  animation: combo-pop var(--fq-med) var(--fq-ease) both;
  will-change: transform, opacity;
}
.hearts {
  color: var(--fq-red);
  font-weight: 900;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 16px;
}

@keyframes combo-pop {
  0% {
    opacity: 0;
    transform: translateX(-50%) translateY(5px) scale(0.82);
  }
  16% {
    opacity: 1;
    transform: translateX(-50%) translateY(0) scale(1.12);
  }
  28% {
    opacity: 1;
    transform: translateX(-50%) translateY(0) scale(1);
  }
  100% {
    opacity: 1;
    transform: translateX(-50%) translateY(0) scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .combo-indicator {
    animation: none;
    opacity: 1;
  }
}

.combo-lightning {
  position: fixed;
  inset: 0;
  z-index: 320;
  pointer-events: none;
  overflow: hidden;
  background: rgba(255, 255, 255, 0);
  animation: combo-flash 820ms steps(1, end) both;
}
.combo-lightning__label {
  position: absolute;
  right: max(18px, env(safe-area-inset-right));
  top: calc(72px + env(safe-area-inset-top));
  padding: 8px 14px;
  border: 3px solid #0b0e1a;
  border-radius: 999px;
  background: #F5E050;
  color: #0b0e1a;
  font-weight: 1000;
  letter-spacing: 0.08em;
  box-shadow: 8px 8px 0 rgba(11, 14, 26, 0.25);
  animation: combo-label-jolt 780ms var(--fq-ease) both;
}
.combo-lightning__bolt {
  position: absolute;
  left: 50%;
  top: -12vh;
  width: clamp(58px, 12vw, 126px);
  height: 118vh;
  transform: translateX(-50%);
  background: #F5E050;
  clip-path: polygon(44% 0, 77% 0, 59% 31%, 84% 31%, 39% 72%, 56% 44%, 29% 44%);
  filter: drop-shadow(8px 0 0 #0b0e1a);
  animation: combo-bolt-strike 760ms cubic-bezier(0.2, 0.9, 0.2, 1) both;
}
.combo-lightning__spark {
  position: absolute;
  left: var(--x);
  bottom: 5vh;
  width: 20px;
  height: 7px;
  background: #F5E050;
  border: 2px solid #0b0e1a;
  transform: rotate(calc(-28deg + var(--i) * 17deg));
  animation: combo-spark-hop 620ms cubic-bezier(0.2, 0.85, 0.2, 1) both;
  animation-delay: var(--delay);
}
.combo-lightning--tier-2 .combo-lightning__bolt,
.combo-lightning--tier-3 .combo-lightning__bolt,
.combo-lightning--tier-4 .combo-lightning__bolt {
  width: clamp(74px, 15vw, 152px);
}
.combo-lightning--reduced {
  animation: none;
}
.combo-lightning--reduced .combo-lightning__bolt {
  top: 16vh;
  height: 52vh;
  opacity: 0.9;
  animation: combo-static-bolt 900ms var(--fq-ease) both;
}
.combo-lightning--reduced .combo-lightning__label {
  animation: none;
}

/* Battery recharge celebration (#339, re-anchored in #390).
   Anchored to the on-screen battery indicator (.stat--battery in the header,
   .hearts in the lesson topbar) rather than the viewport centre, so it no
   longer collides with the Rocket motivational pop-up (.chr--pop, which owns
   the bottom-right / bottom-centre space) and so the reward clearly names what
   was recharged. Falls back to a top-centred position if no anchor is on
   screen. */
.battery-recharge {
  position: fixed;
  left: var(--anchor-x, 50%);
  top: calc(var(--anchor-bottom, 56px) + 14px);
  z-index: 330;
  pointer-events: none;
  display: grid;
  grid-template-columns: auto auto;
  column-gap: 12px;
  row-gap: 2px;
  align-items: center;
  justify-items: start;
  min-width: 172px;
  padding: 14px 20px 14px 16px;
  border: 3px solid rgba(11, 14, 26, 0.22);
  border-radius: 24px;
  background: linear-gradient(135deg, #E8FFE8, #C6F7FF);
  color: #0b0e1a;
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.28), inset 0 5px 0 rgba(255,255,255,0.68);
  transform: translateX(-50%);
  animation: battery-recharge-pop var(--duration, 900ms) cubic-bezier(0.34, 1.56, 0.64, 1) both;
}
/* Little pointer aimed back at the battery indicator. */
.battery-recharge--anchored::before {
  content: "";
  position: absolute;
  top: -11px;
  left: calc(50% + var(--pointer-shift, 0px));
  width: 16px;
  height: 16px;
  transform: translateX(-50%) rotate(45deg);
  background: #E8FFE8;
  border-left: 3px solid rgba(11, 14, 26, 0.22);
  border-top: 3px solid rgba(11, 14, 26, 0.22);
  border-radius: 4px 0 0 0;
}

/* The battery itself — a real cell that visibly fills, not an emoji. */
.battery-recharge__cell {
  grid-row: 1 / span 2;
  display: flex;
  align-items: center;
  gap: 3px;
}
.battery-recharge__shell {
  position: relative;
  display: block;
  width: 46px;
  height: 66px;
  border: 4px solid #0b0e1a;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.72);
  overflow: hidden;
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, 0.9);
}
.battery-recharge__cap {
  display: block;
  width: 9px;
  height: 24px;
  border: 4px solid #0b0e1a;
  border-left: none;
  border-radius: 0 5px 5px 0;
  background: #0b0e1a;
}
.battery-recharge__fill {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: var(--fill-to, 100%);
  background: linear-gradient(180deg, #7CF77C, var(--fq-accent, #22C55E));
  animation: battery-fill-rise var(--duration, 900ms) cubic-bezier(0.22, 1, 0.36, 1) both;
}
.battery-recharge__bolt {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 26px;
  line-height: 1;
  filter: drop-shadow(0 2px 0 rgba(11, 14, 26, 0.25));
  animation: battery-bolt-zap var(--duration, 900ms) var(--fq-ease) both;
}
.battery-recharge__amount {
  align-self: end;
  font-size: 34px;
  line-height: 1;
  animation: battery-count-pop var(--duration, 900ms) cubic-bezier(0.34, 1.56, 0.64, 1) both;
}
.battery-recharge__label {
  align-self: start;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.battery-recharge__spark {
  position: absolute;
  left: 34px;
  top: 50%;
  width: 9px;
  height: 22px;
  border-radius: 6px;
  background: var(--fq-accent);
  transform-origin: 50% 50%;
  animation: battery-spark-out var(--duration, 900ms) ease-out both;
  animation-delay: calc(var(--i) * 26ms);
}
.battery-recharge--amount-3,
.battery-recharge--amount-4 {
  background: linear-gradient(135deg, #FFF4A8, #BFF7FF 55%, #C4FFD8);
}
.battery-recharge--amount-3 .battery-recharge__fill,
.battery-recharge--amount-4 .battery-recharge__fill {
  background: linear-gradient(180deg, #FFF08A, #7CF77C 60%, var(--fq-accent, #22C55E));
}
.battery-recharge--amount-3::before,
.battery-recharge--amount-4::before { background: #FFF4A8; }
.battery-recharge--reduced {
  animation: battery-recharge-static 900ms var(--fq-ease) both;
}
.battery-recharge--reduced .battery-recharge__spark { display: none; }
.battery-recharge--reduced .battery-recharge__fill,
.battery-recharge--reduced .battery-recharge__bolt,
.battery-recharge--reduced .battery-recharge__amount {
  animation: none;
  height: var(--fill-to, 100%);
}

/* The indicator being rewarded pulses in time with the card. */
.stat--battery.is-recharging,
.hearts.is-recharging {
  animation: battery-anchor-pulse 620ms cubic-bezier(0.34, 1.56, 0.64, 1) 2 both;
}
@media (prefers-reduced-motion: reduce) {
  .stat--battery.is-recharging,
  .hearts.is-recharging { animation: none; }
}

/* Narrow viewports: shrink the cell so the card can never clip off-screen. */
@media (max-width: 480px) {
  .battery-recharge { min-width: 152px; padding: 12px 16px 12px 12px; column-gap: 10px; }
  .battery-recharge__shell { width: 38px; height: 56px; }
  .battery-recharge__cap { height: 20px; }
  .battery-recharge__amount { font-size: 28px; }
  .battery-recharge__bolt { font-size: 22px; }
}

@keyframes combo-flash {
  0% { background: rgba(245, 224, 80, 0); }
  42% { background: rgba(245, 224, 80, 0.16); }
  48% { background: rgba(255, 255, 255, 0.22); }
  56% { background: rgba(245, 224, 80, 0.08); }
  100% { background: rgba(245, 224, 80, 0); }
}
@keyframes combo-bolt-strike {
  0% { opacity: 0; transform: translateX(-50%) translateY(-28vh) scaleX(0.72); }
  38% { opacity: 0; }
  46% { opacity: 1; transform: translateX(-50%) translateY(0) scaleX(1.08); }
  58% { opacity: 1; transform: translateX(-50%) translateY(1vh) scaleX(1); }
  100% { opacity: 0; transform: translateX(-50%) translateY(5vh) scaleX(0.9); }
}
@keyframes combo-spark-hop {
  0% { opacity: 0; transform: translateY(28vh) rotate(-32deg) scale(0.5); }
  18% { opacity: 1; }
  58% { opacity: 1; transform: translateY(-44vh) rotate(26deg) scale(1.16); }
  100% { opacity: 0; transform: translateY(-76vh) rotate(54deg) scale(0.55); }
}
@keyframes combo-label-jolt {
  0% { opacity: 0; transform: translateY(-8px) scale(0.8); }
  42% { opacity: 1; transform: translateY(0) scale(1.12) rotate(-2deg); }
  62% { transform: translateY(0) scale(1) rotate(1deg); }
  100% { opacity: 0; transform: translateY(-8px) scale(0.92); }
}
@keyframes combo-static-bolt {
  0% { opacity: 0; transform: translateX(-50%) scale(0.9); }
  20%, 78% { opacity: 1; transform: translateX(-50%) scale(1); }
  100% { opacity: 0; transform: translateX(-50%) scale(0.95); }
}
@keyframes battery-recharge-pop {
  0% { opacity: 0; transform: translateX(-50%) translateY(-14px) scale(0.82); }
  18% { opacity: 1; transform: translateX(-50%) translateY(0) scale(1.08); }
  74% { opacity: 1; transform: translateX(-50%) translateY(0) scale(1); }
  100% { opacity: 0; transform: translateX(-50%) translateY(-14px) scale(0.96); }
}
@keyframes battery-fill-rise {
  0% { height: var(--fill-from, 0%); }
  16% { height: var(--fill-from, 0%); }
  62% { height: var(--fill-to, 100%); }
  70% { height: calc(var(--fill-to, 100%) + 6%); }
  100% { height: var(--fill-to, 100%); }
}
@keyframes battery-bolt-zap {
  0% { opacity: 0; transform: scale(0.4) rotate(-16deg); }
  22% { opacity: 1; transform: scale(1.28) rotate(6deg); }
  40% { opacity: 0.9; transform: scale(1) rotate(0deg); }
  76% { opacity: 1; transform: scale(1.12) rotate(-4deg); }
  100% { opacity: 0.85; transform: scale(1) rotate(0deg); }
}
@keyframes battery-count-pop {
  0% { opacity: 0; transform: translateY(10px) scale(0.6); }
  26% { opacity: 1; transform: translateY(0) scale(1.24); }
  46% { transform: translateY(0) scale(1); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}
/* Sparks fan out radially from the battery cell. --n is the spark count, so
   the fan stays evenly distributed however many the reward size produced. */
@keyframes battery-spark-out {
  0% {
    opacity: 0;
    transform: rotate(calc(var(--i) * (360deg / max(1, var(--n, 12))))) translateY(0) scale(0.35);
  }
  20% { opacity: 1; }
  100% {
    opacity: 0;
    transform: rotate(calc(var(--i) * (360deg / max(1, var(--n, 12))))) translateY(-88px) scale(1.05);
  }
}
@keyframes battery-recharge-static {
  0% { opacity: 0; transform: translateX(-50%) scale(0.95); }
  18%, 78% { opacity: 1; transform: translateX(-50%) scale(1); }
  100% { opacity: 0; transform: translateX(-50%) scale(0.97); }
}
@keyframes battery-anchor-pulse {
  0% { transform: scale(1); filter: none; }
  40% { transform: scale(1.22); filter: drop-shadow(0 0 10px var(--fq-accent, #22C55E)); }
  100% { transform: scale(1); filter: none; }
}

.lesson__body {
  flex: 1;
  min-height: 0;
  padding: var(--lesson-body-pad-y) var(--lesson-body-pad-x);
  max-width: 720px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--lesson-body-gap);
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
}

.lesson__prompt {
  font-size: var(--lesson-prompt-size);
  font-weight: 900;
  line-height: var(--lesson-prompt-line);
  letter-spacing: -0.01em;
  margin: 0;
}
.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: var(--lesson-choice-gap);
}
.choice {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: var(--lesson-choice-pad-y) var(--lesson-choice-pad-x);
  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: var(--lesson-choice-font);
  font-weight: 700;
  text-align: left;
  line-height: var(--lesson-choice-line);
  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: var(--lesson-choice-gap);
}
.tf .choice {
  justify-content: center;
  font-size: var(--lesson-tf-font);
  padding: var(--lesson-tf-pad-y) var(--lesson-tf-pad-x);
  text-align: center;
}

/* Fill in blank */
.fill {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.fill input {
  flex: 1;
  min-width: 0;
  padding: var(--lesson-fill-pad-y) var(--lesson-fill-pad-x);
  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: var(--lesson-fill-font);
  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: var(--lesson-match-gap);
}
.match .choice {
  padding: var(--lesson-match-pad);
  font-size: var(--lesson-match-font);
  min-height: var(--lesson-match-min);
}
.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[data-wrong="true"] {
  background: var(--fq-red-soft);
  border-color: var(--fq-red);
  color: var(--fq-red-dark);
  cursor: default;
  opacity: 0.9;
}
.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: var(--lesson-footer-pad-y) 16px calc(var(--lesson-footer-pad-y) + var(--fq-safe-bottom));
  background: var(--fq-bg);
  border-top: 1px solid var(--fq-border);
  z-index: 2;
}
.lesson__footer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -18px;
  height: 18px;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--fq-fast) var(--fq-ease);
  background: linear-gradient(to bottom, rgba(11, 14, 26, 0), rgba(11, 14, 26, 0.16));
}
.lesson--scrollable .lesson__footer::before {
  opacity: 1;
}
.lesson__footer .btn { max-width: 720px; margin: 0 auto; display: flex; }

.result {
  padding: var(--lesson-result-pad-y) var(--lesson-result-pad-x);
  border-radius: var(--fq-radius-md);
  font-weight: 700;
  font-size: 14px;
  line-height: var(--lesson-result-line);
  margin: 0 auto;
  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--accent {
  --btn-bg: white;
  --btn-shadow: rgba(0,0,0,0.2);
  --btn-text: var(--fq-accent-dark);
}
.complete .btn--ghost {
  --btn-bg: transparent;
  --btn-text: white;
  border-color: rgba(255,255,255,0.4);
}
.complete .btn--ghost:hover {
  background: rgba(255,255,255,0.1);
}

/* ---------- 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--action {
  cursor: pointer;
  border: 2px solid var(--fq-border);
}
.stat-card--action:hover {
  border-color: var(--fq-primary);
  transform: translateY(-1px);
}
.stat-card--action:focus-visible {
  outline: 2px solid var(--fq-primary);
  outline-offset: 2px;
}
.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;
}

.daily-reward {
  border: 2px solid var(--fq-border);
  border-radius: var(--fq-radius-lg);
  background: var(--fq-bg-elev);
  padding: 14px 16px;
  margin: 14px 0 18px;
}
.daily-reward__title {
  font-size: 16px;
  font-weight: 900;
}
.daily-reward__summary {
  margin-top: 4px;
  font-weight: 700;
}
.daily-reward__meta {
  margin-top: 5px;
  color: var(--fq-text-muted);
  font-size: 13px;
}
.daily-reward__actions {
  margin-top: 10px;
}

/* ---------- Earned daily reward screen (#311/#328/#329) ---------- */
.reward-screen {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: calc(20px + var(--fq-safe-top)) 20px calc(20px + var(--fq-safe-bottom));
  background:
    radial-gradient(circle at 50% 20%, rgba(255, 200, 0, 0.28), transparent 34%),
    linear-gradient(160deg, #7c3aed, #f97316 58%, #facc15);
  color: white;
  text-align: center;
}
.reward-card {
  width: min(460px, 100%);
  border-radius: 28px;
  padding: 24px;
  background: rgba(20, 20, 35, 0.34);
  border: 1px solid rgba(255, 255, 255, 0.28);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
  backdrop-filter: blur(10px);
  animation: pop var(--fq-med) var(--fq-ease);
}
.reward-card__eyebrow {
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.82;
}
.reward-card__title {
  margin: 8px 0 6px;
  font-size: clamp(30px, 8vw, 44px);
  line-height: 0.95;
  font-weight: 1000;
  letter-spacing: -0.04em;
}
.reward-card__copy {
  margin: 0 auto 18px;
  max-width: 32ch;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 700;
}
.reward-mailbox {
  position: relative;
  width: 190px;
  height: 172px;
  margin: 0 auto;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
  isolation: isolate;
  transform-origin: 50% 85%;
}
.reward-mailbox:focus-visible {
  outline: 4px solid white;
  outline-offset: 8px;
  border-radius: 24px;
}
.reward-mailbox__emoji,
.reward-mailbox__letter {
  position: absolute;
  left: 50%;
  top: 50%;
  display: grid;
  place-items: center;
  width: 150px;
  height: 130px;
  font-size: 112px;
  line-height: 1;
  pointer-events: none;
  user-select: none;
  filter: drop-shadow(0 14px 18px rgba(0, 0, 0, 0.26));
  transform: translate(-50%, -50%);
  transition: opacity 180ms var(--fq-ease), transform 320ms cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 2;
}
.reward-mailbox__emoji--open-raised,
.reward-mailbox__emoji--open-lowered,
.reward-mailbox__letter { opacity: 0; }
.reward-card--tap-1 .reward-mailbox__emoji--closed { opacity: 0; transform: translate(-50%, -50%) scale(0.84); }
.reward-card--tap-1 .reward-mailbox__emoji--open-raised { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.reward-card--open .reward-mailbox__emoji--closed,
.reward-card--open .reward-mailbox__emoji--open-raised { opacity: 0; transform: translate(-50%, -50%) scale(0.84); }
.reward-card--open .reward-mailbox__emoji--open-lowered,
.reward-card--open .reward-mailbox__letter { opacity: 1; }
.reward-card--revealed .reward-mailbox__emoji,
.reward-card--revealed .reward-mailbox__letter,
.reward-card--revealed .reward-mailbox__glow {
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.72);
}
/* The opened gift takes the mailbox's place on reveal (#454). Every other
   layer fades to zero, which left an empty hole exactly where the payoff
   should be. */
.reward-mailbox__gift {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 5;
  font-size: 72px;
  line-height: 1;
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.4);
  transition: opacity var(--fq-med) var(--fq-ease), transform var(--fq-med) var(--fq-ease);
  pointer-events: none;
}
.reward-card--revealed .reward-mailbox__gift {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
  animation: rewardGiftPop 620ms var(--fq-ease) 1;
}
@keyframes rewardGiftPop {
  0%   { transform: translate(-50%, -50%) scale(0.4) rotate(-8deg); }
  55%  { transform: translate(-50%, -50%) scale(1.12) rotate(4deg); }
  100% { transform: translate(-50%, -50%) scale(1) rotate(0deg); }
}
@media (prefers-reduced-motion: reduce) {
  .reward-mailbox__gift { transition: none; }
  .reward-card--revealed .reward-mailbox__gift { animation: none; }
}
.reward-mailbox__letter {
  left: 61%;
  top: 27%;
  width: 92px;
  height: 82px;
  font-size: 70px;
  z-index: 4;
  transform: translate(-50%, -50%) rotate(8deg) scale(0.82);
}
.reward-card--open .reward-mailbox__letter {
  animation: reward-letter-pop 520ms var(--fq-ease) both;
}
.reward-mailbox__glow {
  position: absolute;
  inset: 38px 30px 28px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.56);
  filter: blur(18px);
  opacity: 0;
  z-index: 1;
}
.reward-card--tap-1 .reward-mailbox,
.reward-card--tap-2 .reward-mailbox { animation: mailbox-hop 420ms var(--fq-ease); }
.reward-card--open .reward-mailbox__glow { opacity: 1; animation: reward-glow 900ms ease-out both; }
.reward-mailbox__kapow {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 6;
  min-width: 150px;
  padding: 12px 18px;
  color: #431407;
  background: #facc15;
  border: 5px solid #dc2626;
  clip-path: polygon(50% 0%, 61% 15%, 79% 5%, 78% 24%, 100% 29%, 82% 43%, 97% 61%, 77% 65%, 75% 88%, 58% 77%, 45% 100%, 36% 78%, 14% 91%, 18% 68%, 0% 59%, 18% 44%, 2% 27%, 23% 24%, 24% 3%, 41% 14%);
  font-size: 20px;
  font-weight: 1000;
  letter-spacing: 0.04em;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -50%) scale(0.25) rotate(-8deg);
}
.reward-card--tap-1 .reward-mailbox__kapow,
.reward-card--open .reward-mailbox__kapow,
.reward-card--revealed .reward-mailbox__kapow {
  animation: reward-kapow 520ms var(--fq-ease) both;
}
@keyframes mailbox-hop {
  0%, 100% { transform: translate(0, 0) rotate(0); }
  30% { transform: translate(-7px, -10px) rotate(-4deg); }
  68% { transform: translate(8px, 2px) rotate(3deg); }
}
@keyframes reward-letter-pop {
  0% { transform: translate(-50%, -50%) rotate(8deg) scale(0.72); }
  55% { transform: translate(-50%, -50%) rotate(8deg) scale(1.08); }
  100% { transform: translate(-50%, -50%) rotate(8deg) scale(1); }
}
@keyframes reward-kapow {
  0% { opacity: 0; transform: translate(-50%, -50%) scale(0.25) rotate(-8deg); }
  25% { opacity: 1; transform: translate(-50%, -50%) scale(1.08) rotate(4deg); }
  72% { opacity: 1; transform: translate(-50%, -50%) scale(1) rotate(-2deg); }
  100% { opacity: 0; transform: translate(-50%, -50%) scale(1.2) rotate(0); }
}
@keyframes reward-glow {
  0% { transform: scale(0.4); opacity: 0; }
  40% { opacity: 1; }
  100% { transform: scale(1.35); opacity: 0.54; }
}
.reward-card__tapcount {
  margin-top: 8px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.reward-prizes {
  display: grid;
  gap: 8px;
  margin: 14px 0;
}
.reward-prize {
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.92);
  color: #431407;
  padding: 12px 14px;
  font-weight: 1000;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
  animation: pop var(--fq-med) var(--fq-ease);
}
.reward-prize--perfect { color: #4c1d95; }
.reward-streak {
  display: grid;
  gap: 3px;
  margin-top: 14px;
  color: rgba(255, 255, 255, 0.9);
}
.reward-streak strong {
  font-size: 18px;
  color: white;
}
.reward-streak__count {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.78);
}
.reward-week {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 6px;
  margin: 14px 0 18px;
}
.reward-week__day {
  min-height: 54px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  gap: 2px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.22);
}
.reward-week__label {
  font-size: 10px;
  font-weight: 900;
  opacity: 0.78;
  text-transform: uppercase;
}
.reward-week__day strong { font-size: 18px; }
.reward-week__day--done {
  background: rgba(255, 255, 255, 0.94);
  color: #92400e;
}
.reward-week__day--today {
  outline: 3px solid white;
  outline-offset: 2px;
}
.reward-card__actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
.reward-screen .btn--accent {
  --btn-bg: white;
  --btn-shadow: rgba(0, 0, 0, 0.2);
  --btn-text: #9a3412;
}
.reward-screen .btn--ghost {
  --btn-bg: transparent;
  --btn-text: white;
  border-color: rgba(255, 255, 255, 0.42);
}
@media (prefers-reduced-motion: reduce) {
  .reward-card,
  .reward-mailbox,
  .reward-card--tap-1 .reward-mailbox,
  .reward-card--tap-2 .reward-mailbox,
  .reward-card--open .reward-mailbox__letter,
  .reward-card--open .reward-mailbox__glow,
  .reward-mailbox__kapow {
    animation: none !important;
  }
  .reward-mailbox__kapow { opacity: 0; }
  /* The mailbox swap must still happen — it is the state change, not
     decoration — so only the motion is removed, not the transition itself. */
  .reward-mailbox__emoji,
  .reward-mailbox__letter {
    transition: opacity 120ms linear;
    transform: none !important;
  }
}

.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; }

.authrow {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: flex-end;
}
.authrow__name {
  font-weight: 700;
  color: var(--fq-text);
  max-width: 220px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px;
}

/* ---------- 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-text);
  background: var(--fq-primary-soft);
}

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

/* The wrapper .path__node already applies translateX(var(--offset)) to place
   the node on the serpentine path. --offset inherits, so repeating it here
   would apply the offset a SECOND time and throw the bobbing node off the
   path — up to 200px right at slot 2. That was invisible while the current
   node was always the first one (offset 0); it surfaced the moment the marker
   started advancing (#376). Bob is vertical only. */
@keyframes bob {
  0%, 100% { transform: translateY(0); }
  50%      { transform: 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:
    radial-gradient(70% 50% at 15% 10%, rgba(69, 230, 255, 0.20), transparent 65%),
    radial-gradient(65% 55% at 90% 90%, rgba(138, 107, 255, 0.30), transparent 70%),
    linear-gradient(180deg, var(--fq-space-warm), var(--fq-space));
  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: transparent;
  display: grid;
  place-items: center;
  overflow: visible;
}
.onboarding__badge svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 20px 40px rgba(138, 107, 255, 0.35));
}
.onboarding__title {
  font-size: 32px;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
}
.onboarding__subtitle {
  opacity: 0.88;
  margin-bottom: 28px;
  font-size: 16px;
  line-height: 1.55;
}
.onboarding .btn { color: var(--fq-text); }
.onboarding .btn--accent {
  --btn-bg: white;
  --btn-shadow: rgba(0,0,0,0.28);
  --btn-text: var(--fq-primary-dark);
  /* Explicit color to beat the `.onboarding .btn { color: var(--fq-text); }`
     rule above — otherwise the accent CTA label washes out to grey and
     becomes near-invisible against the white pill (issue #23). */
  color: var(--fq-primary-dark);
}
.onboarding .btn--ghost {
  color: white;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.24);
}
.onboarding .btn--ghost:hover {
  background: rgba(255, 255, 255, 0.14);
}

/* ---------- 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;
  flex: 0 0 auto;
}
/* #395: the study topbar puts the progress bar directly in the flex row (the
   question topbar wraps it in .lesson__meter, which already has flex: 1). Now
   that a battery chip sits alongside the STUDY pill, the bar needs to claim
   the remaining space explicitly or it collapses to its content width. */
.lesson__topbar > .progress {
  flex: 1;
  min-width: 0;
}
.lesson__topbar > .hearts { flex: 0 0 auto; }


/* ---------- Glossary terms (#137) ---------- */
/* A <button> rather than a styled <span> so the affordance is keyboard
   reachable and tappable without extra JS — :focus-within drives the popup on
   touch, so mobile is never hover-dependent. */
.gloss {
  position: relative;
  display: inline;
  padding: 0;
  margin: 0;
  border: 0;
  background: none;
  font: inherit;
  color: inherit;
  text-decoration: underline dashed currentColor 1px;
  text-underline-offset: 3px;
  cursor: help;
}
.gloss:hover,
.gloss:focus-visible {
  text-decoration-style: solid;
  color: var(--fq-primary);
}
.gloss:focus-visible {
  outline: 2px solid var(--fq-primary);
  outline-offset: 2px;
  border-radius: 3px;
}

.gloss__pop {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 8px);
  transform: translateX(calc(-50% + var(--gloss-shift, 0px))) translateY(4px);
  z-index: 40;
  width: max-content;
  max-width: min(280px, 78vw);
  padding: 10px 12px;
  border-radius: 10px;
  background: #1e2437;
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.45;
  text-align: left;
  text-decoration: none;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
  opacity: 0;
  visibility: hidden;
  transition: opacity 140ms ease, transform 140ms ease;
  pointer-events: none;
}
/* The arrow counter-shifts so it keeps pointing at the term even when the
   bubble has been nudged away from a viewport edge. */
.gloss__pop::after {
  content: "";
  position: absolute;
  top: 100%;
  left: calc(50% - var(--gloss-shift, 0px));
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: #1e2437;
}
.gloss:hover .gloss__pop,
.gloss:focus .gloss__pop,
.gloss:focus-visible .gloss__pop {
  opacity: 1;
  visibility: visible;
  transform: translateX(calc(-50% + var(--gloss-shift, 0px))) translateY(0);
}

/* Near the viewport edge the centered popup would clip; nudge it inward. */
@media (max-width: 420px) {
  .gloss__pop { max-width: 72vw; }
}

@media (prefers-reduced-motion: reduce) {
  .gloss__pop { transition: none; }
}

/* ---------- 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: var(--lesson-hintbox-pad-y) var(--lesson-hintbox-pad-x);
  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: var(--lesson-order-gap);
}
.orderrow {
  display: grid;
  grid-template-columns: 32px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: var(--lesson-order-pad-y) var(--lesson-order-pad-x);
  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: var(--lesson-order-text); 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: var(--lesson-cat-gap); }
.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: var(--lesson-chip-pad-y) var(--lesson-chip-pad-x);
  border-radius: 12px;
  border: 2px solid var(--fq-primary);
  background: var(--fq-bg-elev);
  color: var(--fq-text);
  font-weight: 700;
  font-size: var(--lesson-chip-font);
  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__hint {
  padding: 6px 10px;
  border-radius: 8px;
  border: 2px dashed var(--fq-border-strong);
  color: var(--fq-text-muted);
  font-weight: 800;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  opacity: 0.7;
}

/* #299: keyboard placement control. Rendered only while a chip is selected,
   so it is present exactly when it is actionable and the tab order stays
   short the rest of the time. This is the only path a keyboard user has to
   place an item — the drop targets are pointer-only <div>s. */
.bucket__place {
  align-self: flex-start;
  padding: 6px 12px;
  border-radius: 999px;
  border: 2px solid var(--fq-primary);
  background: var(--fq-primary-soft);
  color: var(--fq-primary-text);
  font-weight: 800;
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
}
.bucket__place:hover { background: var(--fq-primary); color: white; }
.bucket__place:focus-visible {
  outline: 3px solid var(--fq-primary);
  outline-offset: 2px;
}
.catwrap__help {
  font-size: 13px;
  margin-bottom: 2px;
}

/* Chip states */
.chip {
  touch-action: none;   /* prevent scroll during drag on touch */
  cursor: grab;
  transition: transform 120ms var(--fq-ease), box-shadow 120ms var(--fq-ease);
}
.chip:active { cursor: grabbing; }
.chip:disabled { cursor: default; }
.chip--selected {
  background: var(--fq-primary);
  color: white;
  box-shadow: 0 4px 0 var(--fq-primary-dark);
  transform: translateY(-1px);
}

/* Bank / bucket become obvious drop targets while dragging */
body.dragging .catbank,
body.dragging .bucket {
  transition: border-color 120ms, background 120ms, transform 120ms;
}
body.dragging .catbank { border-style: solid; border-color: var(--fq-teal); }
body.dragging .bucket  { border-color: var(--fq-teal); background: var(--fq-primary-soft); }

.drop-target--hover {
  border-color: var(--fq-accent) !important;
  background: var(--fq-accent-soft) !important;
  transform: scale(1.02);
  box-shadow: 0 6px 20px rgba(88, 204, 2, 0.25);
}

/* Ghost element (clone floating with pointer) */
.drag-ghost {
  cursor: grabbing !important;
  will-change: transform, left, top;
  transform: rotate(-3deg) scale(1.06);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.35);
  opacity: 0.94;
  filter: brightness(1.05);
}
.drag-source {
  opacity: 0.35;
  transform: scale(0.96);
  pointer-events: none;
}

/* Global drag state */
body.dragging {
  cursor: grabbing;
  -webkit-user-select: none;
  user-select: none;
  touch-action: none;
}
body.dragging * { cursor: grabbing !important; }

/* Order-row drag handle */
.orderrow {
  grid-template-columns: 24px 32px 1fr auto !important;
  touch-action: none;
  cursor: grab;
  user-select: none;
}
.orderrow:active { cursor: grabbing; }
.orderrow.drag-source { opacity: 0.35; }
.orderrow__grab {
  display: grid;
  place-items: center;
  height: 32px;
  color: var(--fq-text-muted);
  font-weight: 900;
  font-size: 16px;
  letter-spacing: -2px;
  border-radius: 6px;
  background: var(--fq-bg-alt);
  user-select: none;
  pointer-events: none;
}
.orderrow[data-orderidx] { transition: background 120ms, transform 120ms; }
.orderrow.drop-target--hover {
  background: var(--fq-accent-soft) !important;
  box-shadow: inset 0 3px 0 var(--fq-accent), inset 0 -3px 0 var(--fq-accent);
  transform: scale(1.02);
}
.orderctl {
  touch-action: manipulation;
}
body.dragging .orderrow { transition: transform 180ms cubic-bezier(0.2, 0.8, 0.2, 1); }
.orderwrap { position: relative; }
.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;
}

/* ---------- 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;
}
/* With the award reason now shown (#456) a badge is much taller than an
   icon-and-title chip, so cap the width and stack them on narrow screens
   rather than letting two badges squeeze into one row. */
.newbadges__row .badge { max-width: 280px; }
@media (max-width: 480px) {
  .newbadges__row { flex-direction: column; align-items: center; }
  .newbadges__row .badge { width: 100%; max-width: 340px; }
}

/* ---------- 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;
}


/* =============================================================
   CHARACTER CELEBRATIONS
   ============================================================= */

/* ---------- Pop-up (during a lesson) ---------- */
.chr {
  position: fixed;
  z-index: 200;
  pointer-events: none;
  will-change: transform, opacity;
  --chr-size: 96px;
}
.chr--pop {
  right: max(12px, env(safe-area-inset-right));
  bottom: calc(120px + env(safe-area-inset-bottom));
  display: flex;
  align-items: flex-end;
  gap: 10px;
  opacity: 0;
  transform: translateY(20px) scale(0.8);
  transition: opacity 220ms var(--fq-ease), transform 320ms cubic-bezier(0.34, 1.56, 0.64, 1);
}
.chr--pop.chr--visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}
@media (max-width: 520px) {
  .chr--pop {
    left: 12px;
    right: 12px;
    bottom: calc(96px + env(safe-area-inset-bottom));
    justify-content: center;
    --chr-size: 78px;
  }
}

.chr__portrait {
  width: var(--chr-size);
  height: var(--chr-size);
  border-radius: 50%;
  overflow: hidden;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35),
              inset 0 -6px 0 rgba(0, 0, 0, 0.15);
  border: 3px solid #fff;
  flex-shrink: 0;
  position: relative;
  animation: chrBob 1.4s ease-in-out infinite;
}
.chr__portrait svg { display: block; width: 100%; height: 100%; }

.chr__bubble {
  background: #fff;
  color: #3C3C3C;
  border-radius: 18px 18px 18px 4px;
  padding: 10px 14px;
  max-width: 220px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.25);
  border: 2px solid var(--fq-border);
  position: relative;
  font-weight: 700;
  font-size: 13.5px;
  line-height: 1.35;
  animation: chrBubblePop 320ms cubic-bezier(0.34, 1.56, 0.64, 1) 100ms both;
}
.chr__bubble::after {
  content: "";
  position: absolute;
  left: -8px;
  bottom: 6px;
  border: 8px solid transparent;
  border-right-color: #fff;
  border-left: 0;
  filter: drop-shadow(-2px 0 0 var(--fq-border));
}
.chr__name {
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fq-primary);
  font-weight: 900;
  margin-bottom: 2px;
}

/* Sparkle particles orbiting the character */
.chr__particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  width: var(--chr-size);
  height: var(--chr-size);
}
.chr__particle {
  position: absolute;
  left: 50%;
  top: 50%;
  color: var(--fq-yellow);
  font-size: 18px;
  animation: chrParticle 1.6s ease-out infinite;
  animation-delay: calc(var(--i, 0) * 0.15s);
  transform-origin: 0 0;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}
.chr__particle:nth-child(1) { color: var(--fq-yellow); }
.chr__particle:nth-child(2) { color: var(--fq-orange); font-size: 16px; }
.chr__particle:nth-child(3) { color: #fff; }
.chr__particle:nth-child(4) { color: var(--fq-teal); font-size: 14px; }
.chr__particle:nth-child(5) { color: var(--fq-pink); }
.chr__particle:nth-child(6) { color: var(--fq-accent); font-size: 15px; }

@keyframes chrParticle {
  0%   { transform: rotate(calc(var(--i, 0) * 60deg)) translateX(0) scale(0); opacity: 0; }
  25%  { opacity: 1; }
  100% { transform: rotate(calc(var(--i, 0) * 60deg)) translateX(60px) scale(1); opacity: 0; }
}
@keyframes chrBob {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-4px); }
}
@keyframes chrBubblePop {
  0%   { opacity: 0; transform: scale(0.6) translateY(8px); }
  60%  { opacity: 1; transform: scale(1.05) translateY(0); }
  100% { transform: scale(1); }
}

/* ---------- Hero character on lesson-complete screen ---------- */
.complete__character {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  animation: chrHeroIn 600ms cubic-bezier(0.34, 1.56, 0.64, 1);
}
.complete__portrait {
  width: 152px;
  height: 152px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35),
              inset 0 -12px 0 rgba(0, 0, 0, 0.15);
  animation: chrHeroBob 1.8s ease-in-out infinite;
}
.complete__portrait svg { display: block; width: 100%; height: 100%; }
.complete__speech {
  background: #fff;
  color: #3C3C3C;
  padding: 12px 18px;
  border-radius: 18px;
  max-width: 320px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.28);
  position: relative;
}
.complete__speech::before {
  content: "";
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-bottom: 12px solid #fff;
}
.complete__speech-name {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fq-primary);
  font-weight: 900;
  margin-bottom: 2px;
}
.complete__speech-msg { font-weight: 800; font-size: 15px; line-height: 1.35; }

@keyframes chrHeroIn {
  0%   { opacity: 0; transform: scale(0.5) rotate(-8deg); }
  60%  { opacity: 1; transform: scale(1.08) rotate(2deg); }
  100% { opacity: 1; transform: scale(1) rotate(0); }
}
@keyframes chrHeroBob {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}

/* Reduced motion: kill the bouncing but keep the appearance */
@media (prefers-reduced-motion: reduce) {
  .chr__portrait, .complete__portrait { animation: none !important; }
  .chr__particle { animation-duration: 0.01ms !important; }
}


/* ---------- Feedback surfaces (Strategy §5.1) ---------- */
.feedback {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed var(--fq-border-strong);
  flex-wrap: wrap;
}
.feedback__label {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--fq-text-muted);
  margin-right: 0;
  white-space: nowrap;
}
.feedback__btn {
  padding: 4px 8px;
  min-height: 32px;
  border: 2px solid var(--fq-border-strong);
  border-radius: 10px;
  background: var(--fq-bg-elev);
  color: var(--fq-text);
  font-weight: 800;
  font-size: 14px;
  cursor: pointer;
  transition: transform 100ms var(--fq-ease), border-color 100ms;
}
.feedback__btn:hover:not(:disabled) { border-color: var(--fq-teal); transform: translateY(-1px); }
.feedback__btn:active:not(:disabled) { transform: translateY(1px); }
.feedback__btn:disabled { opacity: 0.55; cursor: default; }
.feedback__btn--on {
  background: var(--fq-accent-soft);
  border-color: var(--fq-accent);
}
.feedback__btn--report {
  font-size: 11px;
  padding: 4px 9px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.feedback__thanks {
  margin-left: 4px;
  font-size: 13px;
  font-weight: 800;
  color: var(--fq-accent-dark);
}
.lesson[data-fit-tier="4"] .feedback {
  flex-wrap: nowrap;
}
.lesson[data-fit-tier="4"] .feedback__label,
.lesson[data-fit-tier="4"] .feedback__thanks {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}