/* ============================================================
   CAE Ace — "Examiner's Ink" design system.
   Warm paper, fountain-pen cobalt, marker ticks.
   Tokens first, primitives, then components.
   Every class/custom-property name from the previous system is
   preserved (JS depends on them); many new ones are added.
   ============================================================ */

:root {
  /* -- paper & ink (light: warm paper, cool blue-black ink) -- */
  --bg: #f7f3ea;
  --surface: #fffdf7;
  --surface2: #efe9db;
  --ink: #191d2b;
  --muted: #565e72;
  --faint: #8e94a6;
  --line: #e2dbc8;

  /* -- fountain-pen cobalt: buttons, links, active ink-line,
        selected states, focus rings, chart line. Nothing else. -- */
  --accent: #2b46d4;
  --accent-strong: #1d33a6;
  --accent-soft: #e7eafb;

  --good: #22693f;
  --good-soft: #e1efdf;
  --bad: #b02f27;
  --bad-soft: #f9e4de;
  --warn: #9a5a0a;
  --warn-soft: #f7ecd6;

  /* -- new tokens -- */
  --highlight: #f6d64a;          /* marker yellow: streaks, "new", highlighted phrases only */
  --highlight-soft: #fbf3d2;
  --ink-wash: #f0eee6;           /* booklet-page panel behind exam passages */
  --seal-red: #c2402a;           /* streak stamp + live exam mode only */
  --on-accent: #fffdf7;          /* text on accent fills */
  --btn-edge: #1d33a6;           /* hard under-edge of primary buttons */

  /* -- elevation: cards are FLAT; shadows mean layering/interaction -- */
  --shadow: 0 24px 64px -16px rgba(25, 29, 43, .30);           /* modals / popovers */
  --shadow-hover: 0 1px 0 rgba(25, 29, 43, .04), 0 14px 32px -16px rgba(25, 29, 43, .22);
  --card-glint: none;            /* dark theme: inset top-edge highlight */

  --radius: 14px;                /* cards, modals */
  --radius-sm: 10px;             /* buttons, inputs, selects */
  --radius-xs: 8px;              /* small controls */

  /* -- type -- */
  --display: 'Fraunces', 'Iowan Old Style', Georgia, serif;                 /* titles, hero numerals, band letters */
  --serif: 'Literata', 'Iowan Old Style', Georgia, 'Times New Roman', serif; /* exam passages, long-form reading */
  --sans: 'Schibsted Grotesk', 'Segoe UI', system-ui, sans-serif;            /* everything interactive */
  --mono: 'Spline Sans Mono', 'Cascadia Mono', Consolas, monospace;          /* timers, Q-numbers, counts */

  /* -- signature assets: the examiner's tick (animated draw + static) -- */
  --tick-draw: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 22 18'%3E%3Cstyle%3E@keyframes d%7Bfrom%7Bstroke-dashoffset:23%7D%7Dpath%7Banimation:d .38s ease-out .12s backwards%7D%3C/style%3E%3Cpath d='M3 9l5 5L19 4' fill='none' stroke='%23fffdf7' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round' stroke-dasharray='23' stroke-dashoffset='0'/%3E%3C/svg%3E");
  --tick-static: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 22 18'%3E%3Cpath d='M3 9l5 5L19 4' fill='none' stroke='%23fffdf7' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  --tick-good: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 22 18'%3E%3Cpath d='M3 9l5 5L19 4' fill='none' stroke='%2322693f' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");

  --grain-opacity: .04;

  /* -- per-paper chapter hues (promoted from the dashboard chart SERIES;
        identity colour for each exam paper — NEVER for interaction) -- */
  --paper-reading: #2a78d6;
  --paper-uoe: #1baf7a;
  --paper-listening: #eda100;
  --paper-writing: #4a3aa7;
  --paper-speaking: var(--bad);

  /* -- shared paper grain for rank-1 sheets -- */
  --grain-img: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='128' height='128'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3CfeComponentTransfer%3E%3CfeFuncA type='linear' slope='0.03'/%3E%3C/feComponentTransfer%3E%3C/filter%3E%3Crect width='128' height='128' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Midnight desk: surfaces step lighter instead of casting shadows,
   ink under lamplight — never inverted paper. */
[data-theme="dark"] {
  --bg: #10131d;
  --surface: #181c29;
  --surface2: #212636;
  --ink: #eaebf3;
  --muted: #a4aabf;
  --faint: #6d7387;
  --line: #2b3044;

  --accent: #93a5ff;             /* periwinkle: ink under lamplight */
  --accent-strong: #b3c0ff;
  --accent-soft: #232a44;        /* pre-mixed opaque — tints never stack */

  --good: #72c491;
  --good-soft: #1f332b;
  --bad: #ee837a;
  --bad-soft: #3a2530;
  --warn: #e5b268;
  --warn-soft: #3d3527;

  --highlight: #e8c94f;
  --highlight-soft: #3d392f;
  --ink-wash: #141826;
  --seal-red: #e06a52;
  --on-accent: #0d1230;
  --btn-edge: #5464c4;

  --shadow: 0 24px 64px rgba(0, 0, 0, .5);
  --shadow-hover: 0 0 0 1px rgba(255, 255, 255, .02);
  --card-glint: inset 0 1px 0 rgba(255, 255, 255, .045);

  --tick-draw: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 22 18'%3E%3Cstyle%3E@keyframes d%7Bfrom%7Bstroke-dashoffset:23%7D%7Dpath%7Banimation:d .38s ease-out .12s backwards%7D%3C/style%3E%3Cpath d='M3 9l5 5L19 4' fill='none' stroke='%2310131d' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round' stroke-dasharray='23' stroke-dashoffset='0'/%3E%3C/svg%3E");
  --tick-static: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 22 18'%3E%3Cpath d='M3 9l5 5L19 4' fill='none' stroke='%2310131d' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  --tick-good: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 22 18'%3E%3Cpath d='M3 9l5 5L19 4' fill='none' stroke='%2372c491' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");

  --grain-opacity: .028;

  --paper-reading: #3987e5;
  --paper-uoe: #199e70;
  --paper-listening: #c98500;
  --paper-writing: #9085e9;
  --paper-speaking: var(--bad);
}

/* ---------- base ---------- */

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15.5px;
  line-height: 1.6;
  letter-spacing: -0.005em;
  min-height: 100vh;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  isolation: isolate; /* lets the grain pseudo sit above body's bg, below content */
  transition: background .25s ease, color .25s ease;
}

/* PAPER GRAIN + DESK VIGNETTE — fixed pseudo layers, exempt from
   the theme transition so switching never smears. */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background: none;
}
[data-theme="dark"] body::before {
  background: radial-gradient(120% 80% at 50% -10%, #1a2033 0%, #10131d 60%);
}
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: var(--grain-opacity);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='128' height='128'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='128' height='128' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 128px 128px;
}

h1, h2, h3, h4 { line-height: 1.22; margin: 0 0 .4em; }
h1 {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(2.2rem, 5vw, 2.75rem);   /* the page title outranks every tile numeral */
  letter-spacing: -.015em;
  font-optical-sizing: auto;
}
h2 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.5rem;         /* 24px */
  letter-spacing: -.01em;
  font-optical-sizing: auto;
}
h3 { font-family: var(--sans); font-weight: 700; font-size: 1.19rem; }  /* 19px */
h4 { font-family: var(--sans); font-weight: 700; font-size: 1rem; }

p { margin: 0 0 .8em; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img, canvas { max-width: 100%; }
button { font: inherit; color: inherit; }

mark {
  background: var(--highlight-soft);
  color: var(--ink);            /* the yellow wash never carries text colour */
  padding: 0 .15em;
  border-radius: 3px;
  box-shadow: 0 2px 0 var(--highlight-soft);
}

::selection { background: var(--accent-soft); }

/* Focus contract: pointer focus never leaves a stuck ring; keyboard
   focus gets a box-shadow ring that follows each control's radius. */
:focus:not(:focus-visible) { outline: none; }
:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent);
}

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- type utilities (new) ---------- */

.overline {
  font-family: var(--sans);
  font-size: .6875rem;         /* 11px */
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--muted);
}

/* A confident pen stroke under a title: 36×3 accent bar, slight rise. */
.ink-stroke { position: relative; padding-bottom: 12px; }
.ink-stroke::after {
  content: '';
  position: absolute;
  left: 1px;
  bottom: 4px;
  width: 36px;
  height: 3px;
  border-radius: 2px;
  background: var(--accent);
  transform: rotate(-1.4deg);
  transform-origin: left center;
}

/* Inline examiner's tick (static, good-coloured) for JS-built markup. */
.tick-inline {
  display: inline-block;
  width: .95em;
  height: .8em;
  background: var(--tick-good) center / contain no-repeat;
  vertical-align: -0.05em;
}

/* ---------- header & nav ---------- */

.app-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
@supports not (background: color-mix(in srgb, red 50%, blue)) {
  .app-header { background: var(--bg); }
}

.app-header .container {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 58px;
}

.brand {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.125rem;         /* 18px */
  letter-spacing: -.01em;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
}
.brand .brand-mark {
  color: var(--accent);
  font-size: .82em;
  transform: translateY(-1px);
}

.nav {
  display: flex;
  gap: 2px;
  overflow-x: auto;
  scrollbar-width: none;
  flex: 1;
  -webkit-overflow-scrolling: touch;
}
.nav::-webkit-scrollbar { display: none; }

/* INK-LINE NAV — flat text tabs; a 2.5px accent underline draws in
   under the active tab (scaleX 0→1, from the left, slight spring). */
.nav-btn {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 10px 13px 12px;
  border-radius: var(--radius-xs);
  cursor: pointer;
  white-space: nowrap;
  font-weight: 500;
  font-size: .93rem;
  letter-spacing: .005em;
  position: relative;
  transition: color .18s ease;
  min-height: 42px;
}
.nav-btn::after {
  content: '';
  position: absolute;
  left: 13px;
  right: 13px;
  bottom: 5px;
  height: 2.5px;
  border-radius: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .32s cubic-bezier(.34, 1.3, .64, 1);
}
@media (hover: hover) {
  .nav-btn:hover { color: var(--ink); }
}
.nav-btn.active { color: var(--ink); font-weight: 700; }
.nav-btn.active::after { transform: scaleX(1); }
/* Exam conditions: the mock tab's ink-line switches to seal red. */
.nav-btn[data-nav="mock"].active::after { background: var(--seal-red); }

.header-actions { display: flex; gap: 6px; }

.icon-btn {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background .14s ease, color .14s ease, transform .12s ease;
  flex: none;
}
@media (hover: hover) {
  .icon-btn:hover { color: var(--ink); background: var(--surface2); }
}
.icon-btn:active { transform: scale(.94); }

/* ---------- views ---------- */

main.container { padding-top: 28px; padding-bottom: 96px; }

.view { display: none; }
.view.active { display: block; animation: fadeUp .26s cubic-bezier(.22, 1, .36, 1) both; }

/* Incoming view children cascade — capped stagger. */
.view.active > * { animation: fadeUp .26s cubic-bezier(.22, 1, .36, 1) backwards; }
.view.active > :nth-child(2) { animation-delay: 35ms; }
.view.active > :nth-child(3) { animation-delay: 70ms; }
.view.active > :nth-child(4) { animation-delay: 105ms; }
.view.active > :nth-child(5) { animation-delay: 140ms; }
.view.active > :nth-child(6) { animation-delay: 175ms; }
.view.active > :nth-child(n+7) { animation-delay: 200ms; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes popIn {
  0% { transform: scale(.94); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes shakeX {
  0%, 100% { transform: none; }
  20%, 60% { transform: translateX(-4px); }
  40%, 80% { transform: translateX(4px); }
}

/* ---------- cards & layout ---------- */

/* Border-first elevation: cards are flat sheets of paper on the desk.
   Shadow appears only on interactive hover and true overlays. */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--card-glint);
  padding: 24px;
  margin-bottom: 20px;
}

/* Letterspaced caps survive only as exam metadata; in-card titles go faint. */
.card-title {
  font-family: var(--sans);
  font-size: .625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--faint);
  margin: 0 0 14px;
}

/* Two-tier heading system, tier 1: a numbered section head in Fraunces
   italic with a hairline running to the container edge. */
.section-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-family: var(--display);
  font-style: italic;
  font-weight: 480;
  font-size: 1.35rem;
  font-optical-sizing: auto;
  letter-spacing: normal;
  color: var(--ink);
  margin: 0 0 16px;
}
.section-head::after {
  content: '';
  flex: 1;
  border-top: 1px solid var(--line);
  transform: translateY(-.32em);
}
.section-head .sh-no {
  font-family: var(--mono);
  font-style: normal;
  font-size: .72rem;
  color: var(--faint);
  font-variant-numeric: tabular-nums;
}
.section-head .sh-note {
  font-family: var(--serif);
  font-style: italic;
  font-size: .9rem;
  color: var(--muted);
  white-space: nowrap;
}

.row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.stack { display: flex; flex-direction: column; gap: 12px; }
.grid2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }

.muted { color: var(--muted); }
.small { font-size: .84rem; }
.hidden { display: none !important; }
.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;
}

/* ---------- buttons ---------- */

.btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 500;
  font-size: .95rem;
  padding: 10px 18px;
  min-height: 44px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background .14s ease, border-color .14s ease, color .14s ease,
    transform .14s ease, box-shadow .14s ease;
  text-decoration: none;
}
@media (hover: hover) {
  .btn:hover { background: var(--surface2); text-decoration: none; }
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }

/* Tactile primary: inset top highlight + hard under-edge, like a key. */
.btn-primary {
  background: var(--accent);
  border-color: transparent;
  color: var(--on-accent);
  font-weight: 700;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .22),
    0 2px 0 var(--btn-edge),
    0 10px 20px -10px color-mix(in srgb, var(--accent) 45%, transparent);
}
@media (hover: hover) {
  .btn-primary:hover {
    background: var(--accent);
    border-color: transparent;
    transform: translateY(-1px);
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, .22),
      0 3px 0 var(--btn-edge),
      0 14px 24px -10px color-mix(in srgb, var(--accent) 45%, transparent);
  }
}
.btn-primary:active {
  transform: translateY(1px);
  transition-duration: .09s;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .12), 0 0 0 var(--btn-edge);
}
.btn-primary:disabled {
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .15), 0 2px 0 var(--btn-edge);
}

.btn-ghost { background: transparent; border-color: transparent; color: var(--muted); box-shadow: none; }
.btn-danger { color: var(--bad); border-color: color-mix(in srgb, var(--bad) 35%, var(--line)); }
@media (hover: hover) {
  .btn-ghost:hover { background: var(--surface2); color: var(--ink); }
  .btn-danger:hover { background: var(--bad-soft); }
}

.btn-sm { padding: 6px 12px; min-height: 34px; font-size: .85rem; border-radius: var(--radius-xs); }

/* ---------- chips & badges ---------- */

.chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 11px;
  font-size: .75rem;
  font-weight: 500;
  letter-spacing: .01em;
  white-space: nowrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border: 1px solid color-mix(in srgb, currentColor 25%, transparent);
  border-radius: 999px;
  padding: 2px 10px;
  font-size: .78rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.badge.good { background: var(--good-soft); color: var(--good); }
.badge.bad { background: var(--bad-soft); color: var(--bad); }
.badge.neutral { background: var(--surface2); color: var(--muted); }

/* ---------- forms ---------- */

.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }

.label { font-size: .84rem; font-weight: 500; color: var(--muted); }

.input, .select, .textarea {
  appearance: none;
  width: 100%;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  border-radius: var(--radius-sm);
  padding: 11px 13px;
  font: inherit;
  min-height: 44px;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.input:focus, .select:focus, .textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.select {
  background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%),
    linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%;
  background-size: 5px 5px;
  background-repeat: no-repeat;
  padding-right: 34px;
}

.textarea {
  font-family: var(--serif);
  font-size: 1.06rem;          /* 17px Literata — the writing desk */
  line-height: 1.7;
  letter-spacing: normal;
  resize: vertical;
  min-height: 40vh;
}

input[type="checkbox"] { width: 19px; height: 19px; accent-color: var(--accent); }
input[type="range"] { accent-color: var(--accent); width: 100%; }
input[type="file"] { display: none; }

/* ---------- exercise content ---------- */

/* The booklet page: exam passages sit on an ink-wash panel.
   Left rule is line-coloured on purpose — cobalt stays scarce
   inside long reading sessions. */
.exercise-text {
  font-family: var(--serif);
  font-size: 1.06rem;          /* 17px */
  line-height: 1.7;
  letter-spacing: normal;
  max-width: 68ch;
  color: var(--ink);
  background: var(--ink-wash);
  border-left: 3px solid var(--line);
  border-radius: 12px;
  padding: 20px 24px;
  margin-bottom: 16px;
}
.exercise-text p { margin: 0 0 1em; }
.exercise-text p:last-child { margin-bottom: 0; }
.exercise-text h3 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.25rem;
}

/* Inside extract blocks the panel would double-frame — flatten it. */
.extract-block .exercise-text {
  background: transparent;
  border-left: 0;
  border-radius: 0;
  padding: 0;
  font-size: 1rem;
}

/* Examiner's rubric: quiet, italic, ruled — no tinted box. */
.instructions-box {
  font-family: var(--serif);
  font-style: italic;
  font-size: .97rem;           /* 15.5px */
  letter-spacing: normal;
  color: var(--ink);
  background: transparent;
  border-left: 3px solid var(--accent);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  padding: 12px 16px;
  margin-bottom: 20px;
}

/* RULED GAP BLANKS — handwriting on the exam paper. */
.gap-input {
  font-family: var(--serif);
  font-size: 1.02rem;
  font-style: italic;
  font-weight: 500;
  letter-spacing: normal;
  color: var(--accent);
  background: transparent;
  border: 0;
  border-bottom: 2px dotted var(--faint);
  border-radius: 0;
  padding: 2px 6px 3px;
  width: 8.5em;
  max-width: 100%;
  text-align: center;
  margin: 0 3px;
  min-height: 32px;
  transition: border-color .18s ease, box-shadow .18s ease;
}
.gap-input:focus {
  outline: none;
  border-bottom-style: solid;
  border-bottom-color: var(--accent);
  box-shadow: 0 6px 12px -8px color-mix(in srgb, var(--accent) 40%, transparent);
}
.gap-input.wide { width: 15em; }
.gap-input.correct {
  color: var(--good);
  border-bottom: 2px solid var(--good);
}
.gap-input.incorrect {
  color: var(--bad);
  border-bottom: 2px solid var(--bad);
}

.gap-select {
  font: inherit;
  font-family: var(--sans);
  font-weight: 700;
  color: var(--accent);
  background: transparent;
  border: 0;
  border-bottom: 2px dotted var(--faint);
  border-radius: 0;
  padding: 3px 24px 4px 10px;
  margin: 0 3px;
  min-height: 32px;
  appearance: none;
  transition: border-color .18s ease;
  background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%),
    linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 12px) 55%, calc(100% - 8px) 55%;
  background-size: 4px 4px;
  background-repeat: no-repeat;
}
.gap-select:focus {
  outline: none;
  border-bottom-style: solid;
  border-bottom-color: var(--accent);
}

/* Tiny paper chip holding the question number, set in mono. */
.gap-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 5px;
  border-radius: 6px;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--mono);
  font-style: normal;
  font-size: .72rem;
  font-weight: 400;
  vertical-align: .12em;
  margin: 0 3px 0 1px;
}

/* ---------- questions & options ---------- */

.question-block { padding: 16px 0; border-top: 1px solid var(--line); }
.question-block:first-child { border-top: 0; }

.q-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 27px;
  height: 24px;
  padding: 0 7px;
  border-radius: 6px;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--mono);
  font-weight: 400;
  font-size: .78rem;
  font-variant-numeric: tabular-nums;
  margin-right: 9px;
  flex: none;
}

/* ANSWER-SHEET OPTIONS — OMR bubbles on borderless rows with
   hairline dividers. Selecting pencils the bubble in. */
.option-group { display: flex; flex-direction: column; gap: 0; margin-top: 10px; }

.option {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  text-align: left;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  border-radius: var(--radius-xs) var(--radius-xs) 0 0;
  padding: 11px 10px;
  min-height: 48px;
  cursor: pointer;
  transition: background .15s ease;
  appearance: none;
  font-size: .95rem;
}
.option-group .option:last-child { border-bottom-color: transparent; }
.option:active { transform: none; }
@media (hover: hover) {
  .option:hover { background: var(--surface2); }
}

.option-letter {
  position: relative;
  z-index: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: 1.5px solid color-mix(in srgb, var(--ink) 70%, transparent);
  border-radius: 50%;
  background: transparent;
  color: var(--ink);
  font-family: var(--mono);
  font-weight: 400;
  font-size: .8rem;
  flex: none;
  transition: border-color .15s ease, color .15s ease .05s;
}
/* the pencil-in disc, scaling up from the centre under the letter */
.option-letter::before {
  content: '';
  position: absolute;
  inset: -1.5px;
  z-index: -1;
  border-radius: 50%;
  background: var(--accent);
  transform: scale(0);
  transition: transform .2s cubic-bezier(.34, 1.56, .64, 1);
}

.option.selected { background: var(--accent-soft); }
.option.selected .option-letter {
  border-color: var(--accent);
  color: var(--on-accent);
}
.option.selected .option-letter::before { transform: scale(1); }

/* Marked states: tick draws itself; cross is immediate; missed = dashed ring. */
.option.correct { background: var(--good-soft); border-bottom-color: transparent; }
.option.correct .option-letter {
  border-color: var(--good);
  color: transparent;
  background-image: var(--tick-draw);
  background-size: 14px 12px;
  background-position: center;
  background-repeat: no-repeat;
}
.option.correct .option-letter::before { background: var(--good); transform: scale(1); }

.option.incorrect {
  background: var(--bad-soft);
  border-bottom-color: transparent;
  animation: shakeX .26s ease both;
}
.option.incorrect .option-letter { border-color: var(--bad); color: transparent; }
.option.incorrect .option-letter::before { background: var(--bad); transform: scale(1); }
.option.incorrect .option-letter::after {
  content: '✕';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--surface);
  font-size: .78rem;
}

.option.missed .option-letter {
  border-style: dashed;
  border-color: var(--good);
  color: var(--good);
}

.option:disabled { cursor: default; transform: none; }

/* ---------- results ---------- */

.results-panel { animation: fadeUp .3s cubic-bezier(.22, 1, .36, 1) both; }

.score-header {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

/* The marker's numeral: Fraunces at high optical size, tabular. */
.score-big {
  font-family: var(--display);
  font-weight: 480;
  font-size: 2.9rem;
  font-optical-sizing: auto;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.02em;
  line-height: 1;
  color: var(--ink);
}
/* Masthead numeral: the one figure on the dashboard allowed to shout. */
#view-dashboard .score-big { font-size: clamp(4.5rem, 11vw, 6.75rem); }

.result-item {
  border-left: 3px solid var(--line);
  padding: 12px 0 12px 15px;
  margin: 10px 0;
  animation: fadeUp .3s cubic-bezier(.22, 1, .36, 1) both;
}
.result-item.correct { border-left-color: var(--good); }
.result-item.incorrect { border-left-color: var(--bad); }

.result-item .answers-line { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin: 6px 0; }

.explanation {
  color: var(--muted);
  font-size: .88rem;
  margin-top: 5px;
  max-width: 68ch;
}

/* ---------- progress bars: the grade ladder ---------- */

/* An exam ruler: 8px track; the fill ends in a pen-nib marker.
   Cambridge semantics: 160 = B2 boundary, 180 = C1 pass (grade C),
   200 = grade A / C2 level. Fill goes good at 180+ (.over-pass). */
.progress-track {
  position: relative;
  height: 8px;
  border-radius: 999px;
  background: var(--surface2);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--line) 60%, transparent);
  overflow: visible;
  flex: 1;
  min-width: 120px;
}

.progress-fill {
  position: absolute;
  inset: 0 auto 0 0;
  border-radius: 999px;
  background: var(--accent);
  width: 0;
  min-width: 0;
  transition: width .8s cubic-bezier(.22, 1, .36, 1), background .3s ease;
}
/* pen-nib marker: rotated rounded square riding the end of the fill */
.progress-fill::after {
  content: '';
  position: absolute;
  right: -4px;
  top: 50%;
  width: 11px;
  height: 11px;
  border-radius: 3px;
  background: inherit;
  border: 2px solid var(--surface);
  transform: translateY(-50%) rotate(45deg);
  box-sizing: border-box;
}
.progress-fill.over-pass { background: var(--good); }
.progress-fill.over-c2 { background: linear-gradient(90deg, var(--good), var(--accent)); }
.progress-fill.over-c2::after { background: var(--accent); }

.progress-marker {
  position: absolute;
  top: -4px;
  bottom: -4px;
  width: 1.5px;
  background: var(--faint);
  border-radius: 2px;
}
.progress-marker .marker-label {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--mono);
  font-size: .69rem;
  font-weight: 400;
  color: var(--faint);
  white-space: nowrap;
}

/* Skill mini-bars reuse the ruler at 6px, no labels. */
.progress-track.mini { height: 6px; min-width: 80px; }
.progress-track.mini .progress-fill::after { display: none; }

/* ---------- timer ---------- */

.timer-widget {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 8px 5px 14px;
}
.timer-widget .timer-time {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-weight: 400;
  font-size: 1rem;
  letter-spacing: .02em;
}
.timer-widget.warning .timer-time { color: var(--warn); animation: pulse 1s ease infinite; }
.timer-widget.expired .timer-time { color: var(--bad); }

/* Exam conditions: inside the mock the timer turns seal red. */
#view-mock .timer-widget { border-color: color-mix(in srgb, var(--seal-red) 45%, var(--line)); }
#view-mock .timer-widget .timer-time { color: var(--seal-red); }
#view-mock .timer-widget.expired .timer-time { color: var(--bad); }

@keyframes pulse {
  50% { opacity: .55; }
}

/* ---------- word counter ---------- */

.word-counter {
  font-family: var(--mono);
  font-size: .78rem;
  font-weight: 400;
  font-variant-numeric: tabular-nums;
  padding: 3px 11px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: color .2s ease, background .2s ease;
}
.word-counter.under { background: var(--surface2); color: var(--muted); }
.word-counter.ok { background: var(--good-soft); color: var(--good); border-color: color-mix(in srgb, var(--good) 25%, transparent); }
.word-counter.over { background: var(--warn-soft); color: var(--warn); border-color: color-mix(in srgb, var(--warn) 25%, transparent); }

/* ---------- loading ---------- */

.loading-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 56px 20px;
  text-align: center;
}

.spinner {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2.5px solid var(--surface2);
  border-top-color: var(--accent);
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.loading-tip {
  font-family: var(--serif);
  font-style: italic;
  letter-spacing: normal;
  color: var(--muted);
  font-size: .95rem;
  max-width: 46ch;
  min-height: 2.6em;
  animation: fadeIn .4s ease both;
}

/* ---------- toast ---------- */

#toast-host {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  width: max-content;
  max-width: calc(100vw - 32px);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 9px;
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 12px 32px -12px rgba(25, 29, 43, .35);
  padding: 11px 17px;
  font-size: .92rem;
  font-weight: 500;
  animation: toastIn .24s cubic-bezier(.22, 1, .36, 1) both;
  max-width: 100%;
}
.toast::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex: none;
}
.toast.success::before { background: var(--good); }
.toast.error::before { background: var(--bad); }
.toast.leaving { animation: toastOut .18s ease both; }

@keyframes toastIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}
@keyframes toastOut {
  from { opacity: 1; }
  to { opacity: 0; transform: translateY(6px); }
}

/* ---------- modal ---------- */

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: rgba(16, 19, 29, .45);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  animation: fadeIn .18s ease both;
}
[data-theme="dark"] .modal-backdrop { background: rgba(0, 0, 0, .6); }

.modal {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 520px;
  max-height: min(86vh, 86dvh);
  display: flex;
  flex-direction: column;
  animation: popIn .22s cubic-bezier(.22, 1, .36, 1) both;
}
.modal .modal-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  padding: 20px 22px 0;
}
.modal .modal-head h3 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.38rem;          /* 22px */
  letter-spacing: -.01em;
  margin: 0;
  position: relative;
  padding-bottom: 12px;
}
.modal .modal-head h3::after {
  content: '';
  position: absolute;
  left: 1px;
  bottom: 4px;
  width: 36px;
  height: 3px;
  border-radius: 2px;
  background: var(--accent);
  transform: rotate(-1.4deg);
  transform-origin: left center;
}
.modal .modal-body { padding: 12px 22px; overflow-y: auto; }
.modal .modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 0 22px 20px;
  flex-wrap: wrap;
}

/* ---------- sticky actions ---------- */

/* Docked to the desk: a full-width rule with a ◆ notch, not a floating fog. */
.sticky-actions {
  position: sticky;
  bottom: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  padding: 12px 2px calc(12px + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  margin-top: 8px;
}
@supports not (background: color-mix(in srgb, red 50%, blue)) {
  .sticky-actions { background: var(--bg); }
}
.sticky-actions::before {
  content: '◆';
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  font-size: .6rem;
  line-height: 1;
  color: var(--accent);
  background: var(--bg);
  padding: 2px 9px;
  pointer-events: none;
}
/* Runner progress readout (rendered by JS as .sa-progress). */
.sa-progress {
  font-family: var(--mono);
  font-size: .72rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}
.sticky-actions:has(.sa-progress) { justify-content: space-between; }

/* ---------- transcript / listening ---------- */

.transcript {
  font-family: var(--serif);
  font-size: 1.02rem;
  line-height: 1.7;
  letter-spacing: normal;
  max-width: 68ch;
  background: var(--ink-wash);
  border-left: 3px solid var(--line);
  border-radius: 12px;
  padding: 18px 22px;
}

.speaker-line { margin: 0 0 .7em; }
.speaker-line .speaker {
  font-family: var(--sans);
  font-weight: 700;
  font-size: .72rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .09em;
  display: block;
  margin-bottom: 1px;
}

.player {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  background: var(--surface2);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 10px 13px;
  margin: 10px 0;
}
.player .player-status { font-size: .85rem; color: var(--muted); font-weight: 500; }

/* ---------- part-specific blocks ---------- */

.extract-block {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  margin-bottom: 12px;
  background: var(--ink-wash);
}

.kwt-item { padding: 18px 0; border-top: 1px solid var(--line); }
.kwt-item:first-child { border-top: 0; }

.para-option {
  border: 1px dashed var(--line);
  border-radius: var(--radius-sm);
  padding: 13px 15px;
  margin-bottom: 10px;
  background: var(--ink-wash);
}

.text-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.bands-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 14px 0; }

/* Bookplate band rows for the writing assessment. */
.band-row {
  background: var(--surface2);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  box-shadow: var(--card-glint);
}
.band-row .band-score {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.38rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.01em;
}

/* 5-segment notch meter (new) — fill with .on */
.notch-meter { display: flex; gap: 3px; margin-top: 6px; }
.notch-meter i {
  height: 6px;
  flex: 1;
  max-width: 20px;
  border-radius: 3px;
  background: color-mix(in srgb, var(--faint) 30%, var(--surface2));
}
.notch-meter i.on { background: var(--accent); }

.correction-row {
  border-left: 3px solid var(--warn);
  padding: 9px 0 9px 13px;
  margin: 9px 0;
  font-size: .93rem;
}

.tips-card { margin-bottom: 20px; }
.tips-card ul { padding-left: 20px; margin: 8px 0; }
.tips-card li { margin-bottom: 7px; }

.phrase-list { display: flex; flex-wrap: wrap; gap: 7px; padding: 8px 0; }
.phrase-list .chip { font-weight: 400; font-size: .85rem; white-space: normal; }

/* Exam conditions banner: seal-red top rule while a mock is live. */
.mock-progress {
  position: sticky;
  top: 58px;
  z-index: 35;
  background: var(--bg);
  padding: 10px 0;
  border-top: 2px solid var(--seal-red);
  border-bottom: 1px solid var(--line);
  margin-bottom: 20px;
}

/* ---------- stats & empty states ---------- */

.stat {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--card-glint);
  padding: 16px 18px;
}
.stat-value {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.5rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.015em;
  line-height: 1.15;
}
.stat-label { font-size: .78rem; font-weight: 500; color: var(--muted); margin-top: 3px; }

/* MARGINALIA EMPTY STATES — a colophon, never a grey box. */
.empty-state {
  position: relative;
  border: 0;
  border-radius: var(--radius);
  padding: 44px 20px 36px;
  text-align: center;
  color: var(--muted);
  overflow: hidden;
}
.empty-state::before {
  content: '❧';
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -54%);
  font-family: var(--display);
  font-style: italic;
  font-size: 96px;
  line-height: 1;
  color: var(--faint);
  opacity: .14;
  pointer-events: none;
}
.empty-state.es-reading::before { content: '¶'; }
.empty-state.es-writing::before { content: '✎'; }
.empty-state.es-listening::before { content: '♪'; }
.empty-state.es-speaking::before { content: '❝'; }
.empty-state > p:first-child {
  font-family: var(--display);
  font-style: italic;
  font-weight: 480;
  font-size: 1.22rem;
  letter-spacing: normal;
  color: var(--ink);
  margin-bottom: .45em;
}

/* ---------- streak seal (new) — a library stamp ---------- */

.streak-seal {
  position: relative;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 1.5px solid color-mix(in srgb, var(--seal-red) 85%, transparent);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1px;
  transform: rotate(-4deg);
  color: var(--seal-red);
  flex: none;
}
.streak-seal::before {
  content: '';
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  border: 1px dashed color-mix(in srgb, var(--seal-red) 60%, transparent);
}
.streak-seal .seal-count {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.38rem;
  line-height: 1;
  color: var(--seal-red);      /* numeral at full opacity — contrast first */
}
.streak-seal .seal-label {
  font-size: 8.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .12em;
  opacity: .85;
}
.streak-seal.stamp { animation: stampIn .4s cubic-bezier(.34, 1.3, .64, 1) both; }
@keyframes stampIn {
  0% { transform: rotate(-4deg) scale(1.25); opacity: .3; }
  55% { transform: rotate(-4deg) scale(.97); opacity: 1; }
  100% { transform: rotate(-4deg) scale(1); }
}

/* ---------- details / accordions ---------- */

details {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0 14px;
  margin: 10px 0;
  background: var(--surface);
}
details summary {
  cursor: pointer;
  font-weight: 500;
  padding: 12px 0;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
}
details summary::-webkit-details-marker { display: none; }
details summary::before {
  content: '▸';
  color: var(--faint);
  transition: transform .18s ease;
  flex: none;
}
details[open] summary::before { transform: rotate(90deg); }
details > *:not(summary) { margin-bottom: 12px; }

/* ---------- part browser cards ---------- */

/* CATALOGUE ROWS — a 3px paper-colour binding edge + bottom hairline,
   no full card box. --paper is set per chapter on the practice browser. */
.part-card {
  display: flex;
  align-items: flex-start;
  gap: 13px;
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-left: 3px solid color-mix(in srgb, var(--paper, var(--line)) 55%, var(--line));
  border-radius: 0;
  box-shadow: none;
  padding: 14px 4px 14px 14px;
  cursor: pointer;
  transition: background .16s ease, border-color .16s ease;
  appearance: none;
}
.part-card:active { background: var(--surface2); }
@media (hover: hover) {
  .part-card:hover {
    background: color-mix(in srgb, var(--surface2) 62%, transparent);
    border-left-color: var(--paper, var(--accent));
  }
}
.part-card .part-icon {
  font-size: 1rem;
  line-height: 1;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--paper, var(--accent)) 10%, var(--surface));
  border-radius: var(--radius-xs);
  color: var(--paper, var(--accent));
  flex: none;
  margin-top: 2px;
}
.part-card .part-name { font-weight: 700; }

/* ---------- misc ---------- */

.divider { border: 0; border-top: 1px solid var(--line); margin: 18px 0; }

.key-input-row { display: flex; gap: 8px; align-items: stretch; }
.key-input-row .input { flex: 1; min-width: 0; }

.welcome-hero { text-align: center; padding: 30px 10px 10px; }
.welcome-hero .welcome-icon { font-size: 2.7rem; }
.welcome-hero h2, .welcome-hero h3 { font-family: var(--display); font-weight: 600; }

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}
.settings-row:last-child { border-bottom: 0; }

/* ---------- responsive ---------- */

@media (max-width: 720px) {
  .container { padding: 0 14px; }
  .grid2, .grid3, .text-columns, .bands-grid { grid-template-columns: 1fr; }
  .app-header .container { flex-wrap: nowrap; gap: 8px; }
  .brand .brand-text { display: none; }
  body { font-size: 15px; }
  .card { padding: 18px; }
  .exercise-text { padding: 16px 16px; }
  .transcript { padding: 14px 16px; }
  .score-big { font-size: 2.4rem; }
  .mock-progress { top: 57px; }
  main.container { padding-top: 20px; }
  /* 16px floor on text entry: iOS must never zoom the exam paper. */
  .input, .select, .textarea, .gap-input { font-size: 16px; }
}

@media (min-width: 721px) and (max-width: 900px) {
  .grid3 { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  /* correctness must never hide behind a skipped animation:
     render the examiner's tick fully drawn */
  .option.correct .option-letter { background-image: var(--tick-static); }
  .tick-inline { background-image: var(--tick-good); }
}


/* ================================================================
   VIEW COMPONENTS — appended by the redesign merge
   ================================================================ */

/* ---- from app.js, storage.js ---- */
/* ===== app.js polish: parts browser (pb-), welcome (wm-), settings (set-), score inputs ===== */

/* --- parts browser: paper group headers --- */
.pb-group { margin: 34px 0 14px; }
.pb-group .overline { display: block; margin-bottom: 3px; }
.pb-group h2 { margin-bottom: .12em; }
.pb-group .pb-sub { margin: 0; }

/* --- part cards: eyebrow, body column, meta row, sliding chevron --- */
.pb-body { display: flex; flex-direction: column; flex: 1; min-width: 0; }
.pb-no {
  font-family: var(--mono);
  font-size: .7rem;
  font-weight: 400;
  letter-spacing: .05em;
  color: var(--faint);
  margin-bottom: 1px;
}
.pb-name { display: block; font-size: 1.02rem; line-height: 1.35; }
.pb-desc { display: block; margin: 3px 0 10px; }
.pb-meta { gap: 7px; margin-top: auto; }
.pb-go {
  align-self: center;
  flex: none;
  font-size: 1.2rem;
  line-height: 1;
  color: var(--faint);
  transition: transform .2s cubic-bezier(.34, 1.3, .64, 1), color .16s ease;
}
@media (hover: hover) {
  .part-card:hover .pb-go { transform: translateX(4px); color: var(--accent); }
}

/* --- welcome modal: accent-tilted mark, overline, lede, optional section --- */
.wm-mark { color: var(--accent); display: inline-block; transform: rotate(-6deg); }
.wm-overline { display: block; margin: 8px 0 4px; }
.welcome-hero .wm-lede { max-width: 36ch; margin: 0 auto; }
.wm-section { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line); }
.wm-section > .overline { display: block; margin-bottom: 4px; }

/* decorative 142–210 grade ladder (reuses .progress-track markers) */
.wm-ladder { padding: 26px 6px 0; }
.wm-ladder-ends {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: .69rem;
  color: var(--faint);
  margin: 6px 0 14px;
}

/* --- optional score inputs, shared by welcome + settings --- */
.score-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.score-pair .field { margin-bottom: 8px; }
@media (max-width: 480px) { .score-pair { grid-template-columns: 1fr; } }

/* --- settings modal: overline section rhythm --- */
.set-section { margin: 26px 0 12px; padding-top: 18px; border-top: 1px solid var(--line); }
.set-section:first-child { margin-top: 0; padding-top: 0; border-top: 0; }
.set-section .overline { display: block; }

/* ---- from ui.js ---- */
/* ============================================================
   ui.js polish — shared components (namespaced ui-*)
   ============================================================ */

/* -- Loading: a pen circling an ink pool -- */
.loading-ink {
  position: relative;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
}
.loading-ink .spinner {
  position: absolute;
  inset: 0;
  width: 46px;
  height: 46px;
  border-width: 2px;
}
.loading-ink::after {
  content: '';
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  animation: uiInkPool 1.7s ease-in-out infinite;
}
@keyframes uiInkPool {
  0%, 100% { transform: scale(.65); opacity: .5; }
  50% { transform: scale(1); opacity: 1; }
}
.loading-box .ui-tip-head { color: var(--faint); margin-top: 8px; }
.loading-box .ui-tip-head + .loading-tip { margin-top: -8px; }

/* -- Practice-runner part header -- */
.ui-part-icon {
  width: 46px;
  height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  line-height: 1;
  background: var(--surface2);
  border-radius: var(--radius-sm);
  box-shadow: var(--card-glint);
  flex: none;
}
.ui-parthead h2 { margin: 1px 0 0; }

/* -- Results: the marker's stamp + staggered reveal -- */
.ui-stamp {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--sans);
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .11em;
  border: 1.5px solid currentColor;
  outline: 1px dashed currentColor;
  outline-offset: -5px;
  border-radius: 999px;
  padding: 8px 16px;
  transform: rotate(-3deg);
  flex: none;
  animation: uiStampIn .45s cubic-bezier(.34, 1.3, .64, 1) .3s backwards;
}
.ui-stamp.good { color: var(--good); background: var(--good-soft); }
.ui-stamp.neutral { color: var(--muted); background: var(--surface2); }
.ui-stamp.bad { color: var(--bad); background: var(--bad-soft); }
@keyframes uiStampIn {
  0% { transform: rotate(-3deg) scale(1.35); opacity: 0; }
  60% { transform: rotate(-3deg) scale(.96); opacity: 1; }
  100% { transform: rotate(-3deg) scale(1); }
}
.results-panel .ui-reveal { animation: fadeUp .3s cubic-bezier(.22, 1, .36, 1) both; }
.ui-review-add { min-height: 44px; margin-top: 6px; }

/* -- Option re-tap pulse (first select is the pencil-in disc) -- */
.option.ui-repulse .option-letter { animation: uiRepulse .26s cubic-bezier(.34, 1.56, .64, 1); }
@keyframes uiRepulse { 50% { transform: scale(1.14); } }

/* -- Modal close: quiet ghost in the corner -- */
.modal .ui-modal-close {
  border-color: transparent;
  background: transparent;
  color: var(--faint);
  margin: -6px -8px 0 0;
}
@media (hover: hover) {
  .modal .ui-modal-close:hover { color: var(--ink); background: var(--surface2); }
}

/* -- Sticky action bar entrance -- */
.sticky-actions.ui-actionbar { animation: fadeUp .32s cubic-bezier(.22, 1, .36, 1) both; }

/* -- Error state: an apology in the margin, never a warning box -- */
.ui-error {
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: 40px 22px 32px;
}
.ui-error::before {
  content: '※';
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -56%);
  font-family: var(--display);
  font-style: italic;
  font-size: 92px;
  line-height: 1;
  color: var(--faint);
  opacity: .13;
  pointer-events: none;
}
.ui-error > * { position: relative; }
.ui-error .ui-error-head {
  font-family: var(--display);
  font-style: italic;
  font-weight: 480;
  font-size: 1.22rem;
  letter-spacing: normal;
  color: var(--ink);
  margin-bottom: .35em;
}

/* ---- from mocktest.js, writing.js ---- */
/* ===== mock test polish (js/mocktest.js) ===== */
.mock-paper-list { margin: 18px 0 4px; border-top: 1px solid var(--line); }
.mock-paper-row { display: flex; align-items: center; gap: 14px; padding: 12px 2px; border-bottom: 1px solid var(--line); }
.mock-paper-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: 8px; flex: none;
  border: 1px solid var(--line); color: var(--muted);
  font-family: var(--mono); font-size: .82rem; font-variant-numeric: tabular-nums;
}
.mock-paper-name { flex: 1; min-width: 0; line-height: 1.35; }
.mock-paper-name strong { display: block; font-size: .95rem; }
.mock-paper-name .muted { display: block; }
.mock-paper-min { font-family: var(--mono); font-size: .78rem; color: var(--muted); white-space: nowrap; font-variant-numeric: tabular-nums; }
.mock-start-btn { width: 100%; max-width: 420px; min-height: 52px; font-size: 1.02rem; margin-top: 18px; }
.mock-interstitial { text-align: center; padding: 44px 24px 40px; }
.mock-interstitial h2 { font-size: 1.8rem; margin-bottom: .25em; }
.mock-interstitial .mock-start-btn { max-width: 320px; margin-top: 20px; }
.mock-live { color: var(--seal-red); }
.mock-step { font-family: var(--mono); font-size: .72rem; color: var(--muted); font-variant-numeric: tabular-nums; margin-top: 2px; }
.mock-progress .progress-track { margin-top: 10px; }
.mock-part-icon {
  width: 42px; height: 42px; display: inline-flex; align-items: center; justify-content: center;
  background: var(--surface2); border-radius: var(--radius-sm); font-size: 1.25rem; flex: none;
}
.mock-tick {
  width: 58px; height: 58px; margin: 0 auto 16px; border-radius: 50%;
  background: var(--good) var(--tick-draw) center / 30px 25px no-repeat;
  box-shadow: 0 0 0 6px var(--good-soft);
  animation: popIn .3s cubic-bezier(.34, 1.3, .64, 1) both;
}
.mock-review-sum .mock-review-name { flex: 1; min-width: 0; line-height: 1.3; }
.mock-review-sum .mock-review-name strong { display: block; }
.mock-review-sum .mock-review-name .muted { display: block; font-weight: 400; }
.mock-review-sum .badge { flex: none; }
.stat .progress-track.mini { margin-top: 10px; }

/* ===== writing polish (js/parts/writing.js) ===== */
.wri-task-body { font-family: var(--serif); letter-spacing: normal; font-size: 1.02rem; line-height: 1.7; max-width: 68ch; margin-top: 10px; }
.wri-task-body p { margin: 0 0 .6em; }
.wri-task-body p:last-child { margin-bottom: 0; }
.wri-task-body ul { padding-left: 22px; margin: 6px 0 0; }
.wri-task-body li { margin-bottom: 5px; }
.wri-editor-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; padding-bottom: 12px; margin-bottom: 12px; border-bottom: 1px dashed var(--line); }
.wri-band-of { font-family: var(--sans); font-size: .68em; font-weight: 500; color: var(--muted); margin-left: 1px; }
.wri-strengths { list-style: none; padding-left: 2px; margin: 8px 0; }
.wri-strengths li { margin-bottom: 7px; }
.wri-strengths .tick-inline { margin-right: 7px; }
.wri-corr-orig {
  font-family: var(--serif); letter-spacing: normal; color: var(--muted);
  text-decoration: line-through;
  text-decoration-color: color-mix(in srgb, var(--bad) 55%, transparent);
}
.wri-corr-fix { font-family: var(--serif); letter-spacing: normal; font-weight: 500; color: var(--ink); }
.wri-corr-fix::before { content: '→ '; font-family: var(--sans); font-weight: 700; color: var(--warn); }
.wri-draft-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; padding: 10px 0; border-top: 1px solid var(--line); }
.wri-draft-info { flex: 1; min-width: 150px; display: flex; flex-direction: column; gap: 1px; }
.wri-draft-type { font-weight: 700; font-size: .9rem; }
.wri-draft-meta { font-family: var(--mono); font-size: .72rem; color: var(--muted); font-variant-numeric: tabular-nums; }

@media (prefers-reduced-motion: reduce) {
  .mock-tick { background-image: var(--tick-static); }
}

/* ---- from dashboard.js ---- */
/* ---- dashboard view (js/dashboard.js) — namespaced dash-* ---- */
.dash-head { margin-bottom: 18px; }
.dash-head .overline { display: block; margin-bottom: 4px; }
.dash-head h2 { margin: 0; }

.dash-score-row { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.dash-hero-chips { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.dash-add-score { font-size: .85rem; padding: 6px 14px; }

/* Hero grade ladder: room above for the 180/200 ruler labels and
   below for the personal goal label. */
.dash-hero-track { margin: 34px 2px 26px; }
.dash-goal-marker { width: 2px; background: var(--accent); }
.dash-goal-marker .marker-label { top: auto; bottom: -21px; color: var(--accent); }

.dash-grid { margin-bottom: 16px; }

.dash-trend { font-family: var(--sans); font-size: .5em; font-weight: 700; margin-left: 7px; vertical-align: .18em; letter-spacing: 0; }
.dash-mini { margin-top: 10px; }

a.dash-speak { display: block; text-decoration: none; color: inherit; transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease; }
@media (hover: hover) {
  a.dash-speak:hover { text-decoration: none; border-color: color-mix(in srgb, var(--accent) 30%, var(--line)); box-shadow: var(--shadow-hover); transform: translateY(-2px); }
}

.dash-streak { display: flex; align-items: center; gap: 16px; }
.dash-streak .stat-label { margin-top: 0; }

.dash-list-row { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; padding: 9px 0; border-bottom: 1px solid var(--line); }
.dash-list-row:first-child { padding-top: 0; }
.dash-list-row:last-child { border-bottom: 0; padding-bottom: 0; }
.dash-mock-overall { font-family: var(--display); font-weight: 600; font-size: 1.35rem; font-variant-numeric: tabular-nums; letter-spacing: -.01em; }
.dash-mini-scores { font-family: var(--mono); font-size: .74rem; letter-spacing: .01em; }

/* ---- from listening.js, speaking.js ---- */
/* ============================================================
   Listening player deck (js/parts/listening.js)
   ============================================================ */
.player.player-deck {
  align-items: center;
  gap: 14px;
  flex-wrap: nowrap;
  background: var(--surface);
  box-shadow: var(--card-glint);
  padding: 12px 14px;
}
.player-deck .player-controls { display: flex; gap: 8px; flex: none; }
.player-deck .player-btn {
  appearance: none;
  width: 46px;
  height: 46px;
  padding: 0;
  border-radius: 50%;
  border: 1.5px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  font-size: .92rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background .14s ease, color .14s ease, border-color .14s ease,
    transform .14s ease, box-shadow .14s ease;
}
.player-deck .player-btn:disabled { opacity: .45; cursor: not-allowed; transform: none; }
.player-deck .player-btn-play {
  background: var(--accent);
  border-color: transparent;
  color: var(--on-accent);
  padding-left: 3px; /* optical centring of the play glyph */
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .22), 0 2px 0 var(--btn-edge);
}
.player-deck .player-btn-play:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .22), 0 3px 0 var(--btn-edge);
}
.player-deck .player-btn-play:active:not(:disabled) {
  transform: translateY(1px);
  transition-duration: .09s;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .12);
}
.player-deck .player-btn-stop:hover:not(:disabled) {
  background: var(--bad-soft);
  border-color: color-mix(in srgb, var(--bad) 35%, var(--line));
  color: var(--bad);
}
.player-deck .player-meta {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.player-deck .player-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.player-deck .player-tracklabel {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: .6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--faint);
  white-space: nowrap;
}
.player-deck .player-eq {
  display: inline-flex;
  align-items: flex-end;
  gap: 2px;
  width: 13px;
  height: 11px;
  flex: none;
}
.player-deck .player-eq i {
  flex: 1;
  border-radius: 1px;
  background: var(--faint);
  height: 30%;
}
.player-deck.is-playing .player-eq i { background: var(--accent); animation: caeEq .9s ease-in-out infinite; }
.player-deck.is-playing .player-eq i:nth-child(2) { animation-delay: .25s; }
.player-deck.is-playing .player-eq i:nth-child(3) { animation-delay: .5s; }
@keyframes caeEq {
  0%, 100% { height: 30%; }
  50% { height: 100%; }
}
.player-deck .player-plays {
  font-family: var(--mono);
  font-size: .72rem;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 2px 9px;
  white-space: nowrap;
  flex: none;
}
.player-deck .player-status { margin: 2px 0 0; }
@media (max-width: 480px) {
  .player.player-deck { gap: 12px; }
  .player-deck .player-btn { width: 44px; height: 44px; }
}

/* ---- listening: rubric-style situation lines & transcript labels ---- */
.extract-situation {
  font-family: var(--serif);
  font-style: italic;
  letter-spacing: normal;
  font-size: .97rem;
  color: var(--muted);
  max-width: 60ch;
  margin: 0 0 12px;
}
.transcript .ts-extract {
  display: block;
  border-bottom: 1px solid var(--line);
  padding-bottom: 5px;
  margin: 20px 0 10px;
  color: var(--faint);
}
.transcript .ts-extract:first-child { margin-top: 0; }
.transcript .extract-situation { margin-bottom: 10px; }

/* ---- listening part 4: answer bank + speaker matching ---- */
.lis4-heading { font-weight: 700; margin: -4px 0 12px; max-width: 62ch; }
.lis4-bank { display: flex; flex-direction: column; margin: 2px 0 12px; }
.lis4-bank .row {
  flex-wrap: nowrap;
  align-items: flex-start;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 60%, transparent);
}
.lis4-bank .row:last-child { border-bottom: 0; }
.lis4-bank .option-letter { margin-top: 1px; }
.lis4-match { gap: 8px; }
.lis4-match .lis4-speaker { min-width: 92px; font-weight: 500; }

/* ============================================================
   Speaking view (js/parts/speaking.js)
   ============================================================ */
.spk-intro .overline { margin: 0 0 8px; }
.spk-intro p { max-width: 68ch; }
.spk-part-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 4px;
}
.spk-part-head .overline { margin: 0 0 3px; }
.spk-part-head .spk-title {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.38rem;
  letter-spacing: -.01em;
  font-optical-sizing: auto;
  margin: 0;
}
.spk-part-num {
  font-family: var(--display);
  font-style: italic;
  font-weight: 480;
  font-size: 2.7rem;
  line-height: .9;
  color: var(--faint);
  opacity: .38;
  flex: none;
  user-select: none;
}
.tips-card .spk-chips { margin: 0 0 4px; }
.tips-card .spk-format {
  font-family: var(--serif);
  letter-spacing: normal;
  font-size: 1.02rem;
  line-height: 1.65;
  max-width: 64ch;
  margin: 12px 0 0;
}
.tips-card .spk-h {
  font-family: var(--sans);
  font-size: .6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--muted);
  margin: 24px 0 4px;
}
.spk-crit { list-style: none; padding: 0; margin: 0; }
.spk-crit li {
  padding: 9px 0;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 60%, transparent);
  font-size: .93rem;
  max-width: 68ch;
}
.spk-crit li:last-child { border-bottom: 0; }
.spk-crit .spk-crit-name { display: block; font-size: .85rem; letter-spacing: .01em; }
.spk-tips { list-style: none; padding: 0; margin: 0; }
.spk-tips li { position: relative; padding: 6px 0 6px 22px; max-width: 66ch; }
.spk-tips li::before {
  content: '—';
  position: absolute;
  left: 0;
  top: 6px;
  color: var(--faint);
}
.spk-phrases { margin-top: 18px; }
.spk-phrase-group { padding: 2px 0 6px; }
.spk-phrase-group .overline { margin: 6px 0 2px; font-size: .65rem; color: var(--faint); }
.spk-phrases .phrase-list { padding: 4px 0 2px; }
.spk-phrases .phrase-list .chip {
  font-family: var(--serif);
  font-style: italic;
  letter-spacing: normal;
  font-size: .9rem;
  line-height: 1.45;
  color: var(--ink);
  background: var(--ink-wash);
  border-color: color-mix(in srgb, var(--line) 85%, transparent);
  border-radius: 12px;
  padding: 5px 13px;
}
.tips-card .spk-practice {
  border-top: 1px solid var(--line);
  margin-top: 22px;
  padding-top: 18px;
}
.spk-practice .spk-h { margin-top: 0; }
.spk-practice .spk-practice-intro {
  font-family: var(--serif);
  font-style: italic;
  letter-spacing: normal;
  color: var(--muted);
  font-size: .95rem;
  max-width: 58ch;
  margin: 4px 0 14px;
}
.spk-prompt-list {
  font-family: var(--serif);
  font-size: 1.02rem;
  line-height: 1.65;
  letter-spacing: normal;
  background: var(--ink-wash);
  border-left: 3px solid var(--line);
  border-radius: 12px;
  margin: 16px 0 0;
  padding: 16px 20px 16px 42px;
  max-width: 68ch;
  animation: fadeUp .3s cubic-bezier(.22, 1, .36, 1) both;
}
.spk-prompt-list li { margin-bottom: 10px; padding-left: 6px; }
.spk-prompt-list li:last-child { margin-bottom: 0; }
.spk-prompt-list li::marker {
  font-family: var(--mono);
  font-size: .82rem;
  color: var(--faint);
}

/* ---- minimalist line icons ---- */
.part-icon svg, .ui-part-icon svg, .mock-part-icon svg { display: block; }
.part-icon, .ui-part-icon, .mock-part-icon { color: var(--accent); }
.stat-label svg { vertical-align: -3px; margin-right: 4px; }

/* ================================================================
   MOTION POLISH — springs, staggers, sheens, theme cross-fade
   ================================================================ */

/* Native view transitions: quick, quiet cross-fade. */
::view-transition-old(root), ::view-transition-new(root) { animation-duration: .18s; }

/* Theme switch: every surface cross-fades together for ~.4s. */
html.theme-fade, html.theme-fade *, html.theme-fade *::before, html.theme-fade *::after {
  transition: background-color .35s ease, border-color .35s ease, color .35s ease,
    box-shadow .35s ease, fill .35s ease, stroke .35s ease !important;
}

/* Staggered entrance for a view's top-level blocks… */
.view.active > * { animation: fadeUp .32s cubic-bezier(.22, 1, .36, 1) both; }
.view.active > *:nth-child(2) { animation-delay: .05s; }
.view.active > *:nth-child(3) { animation-delay: .09s; }
.view.active > *:nth-child(4) { animation-delay: .13s; }
.view.active > *:nth-child(5) { animation-delay: .17s; }
.view.active > *:nth-child(6) { animation-delay: .20s; }
.view.active > *:nth-child(n+7) { animation-delay: .23s; }

/* …and for cards inside grids (part browser, dashboard stats). */
.view.active .grid2 > *, .view.active .grid3 > * {
  animation: fadeUp .36s cubic-bezier(.22, 1, .36, 1) both;
}
.view.active .grid2 > *:nth-child(2), .view.active .grid3 > *:nth-child(2) { animation-delay: .04s; }
.view.active .grid2 > *:nth-child(3), .view.active .grid3 > *:nth-child(3) { animation-delay: .08s; }
.view.active .grid2 > *:nth-child(4), .view.active .grid3 > *:nth-child(4) { animation-delay: .12s; }
.view.active .grid2 > *:nth-child(5), .view.active .grid3 > *:nth-child(5) { animation-delay: .16s; }
.view.active .grid2 > *:nth-child(6), .view.active .grid3 > *:nth-child(6) { animation-delay: .20s; }
.view.active .grid2 > *:nth-child(n+7), .view.active .grid3 > *:nth-child(n+7) { animation-delay: .24s; }

/* Springier modal + toast entrances. */
.modal { animation: modalSpring .34s cubic-bezier(.34, 1.3, .64, 1) both; }
@keyframes modalSpring {
  from { transform: scale(.94) translateY(12px); opacity: 0; }
  to { transform: none; opacity: 1; }
}
.toast { animation: toastSpring .4s cubic-bezier(.34, 1.4, .64, 1) both; }
@keyframes toastSpring {
  from { opacity: 0; transform: translateY(16px) scale(.95); }
  to { opacity: 1; transform: none; }
}

/* Answer options: springy select + letter-badge pulse. */
.option.selected { animation: optionSpring .24s cubic-bezier(.34, 1.5, .64, 1); }
@keyframes optionSpring {
  0% { transform: scale(.985); }
  60% { transform: scale(1.012); }
  100% { transform: scale(1); }
}
.option.selected .option-letter { animation: uiRepulse .3s cubic-bezier(.34, 1.56, .64, 1); }

/* Primary buttons: a quiet sheen sweep on hover. */
.btn-primary { position: relative; overflow: hidden; }
.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 42%, rgba(255, 255, 255, .22) 50%, transparent 58%);
  transform: translateX(-130%);
  pointer-events: none;
}
@media (hover: hover) {
  .btn-primary:hover::after { transform: translateX(130%); transition: transform .55s ease; }
}

/* Icon tiles: playful tilt on card hover. */
.part-icon svg, .ui-part-icon svg, .mock-part-icon svg {
  transition: transform .28s cubic-bezier(.34, 1.4, .64, 1);
}
@media (hover: hover) {
  .part-card:hover .part-icon svg { transform: scale(1.12) rotate(-5deg); }
  .part-card:hover .part-icon { background: color-mix(in srgb, var(--paper, var(--accent)) 16%, var(--surface)); }
}
.part-card .part-icon { transition: background .2s ease; }

/* Score bar: one shimmer sweep when results land. */
.results-panel .progress-fill {
  background-image: linear-gradient(90deg, transparent, rgba(255, 255, 255, .3), transparent);
  background-size: 220% 100%;
  animation: barShimmer 1.5s ease .5s 1 both;
}
@keyframes barShimmer {
  from { background-position: 160% 0; }
  to { background-position: -60% 0; }
}

/* ================================================================
   PRACTICALITY — answer-in-place popover + desktop split reading
   ================================================================ */

/* Gap chips in the cloze read as tappable. */
.gap-num { cursor: pointer; transition: transform .16s ease, box-shadow .16s ease; }
@media (hover: hover) {
  .gap-num:hover { transform: translateY(-1px) scale(1.06); box-shadow: 0 2px 8px color-mix(in srgb, var(--accent) 35%, transparent); }
}

/* The floating option picker anchored to a gap number. */
.gap-pop {
  position: fixed;
  z-index: 90;
  min-width: 220px;
  max-width: 300px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  padding: 8px;
  animation: popIn .16s cubic-bezier(.34, 1.3, .64, 1) both;
}
.gap-pop-head {
  font-size: .6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--muted);
  padding: 4px 8px 8px;
}
.gap-pop-opt {
  appearance: none;
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  text-align: left;
  border: 1.5px solid transparent;
  background: transparent;
  color: var(--ink);
  border-radius: 9px;
  padding: 9px 10px;
  min-height: 42px;
  cursor: pointer;
  font: inherit;
  font-size: .95rem;
  transition: background .13s ease, border-color .13s ease;
}
.gap-pop-opt:focus-visible { background: var(--surface2); }
@media (hover: hover) {
  .gap-pop-opt:hover { background: var(--surface2); }
}
.gap-pop-opt.selected { border-color: var(--accent); background: var(--accent-soft); }
.gap-pop-opt.selected .option-letter { background: var(--accent); color: var(--on-accent); }

/* Reading parts: text sticky on the left, questions scroll on the right. */
.split-view { display: block; }
@media (min-width: 1020px) {
  .split-view {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 28px;
    align-items: start;
  }
  .split-view > .split-text {
    position: sticky;
    top: 74px;
    max-height: calc(100vh - 96px);
    overflow-y: auto;
    overscroll-behavior: contain;
    padding-right: 12px;
    scrollbar-width: thin;
  }
  .split-view > .split-text::after {
    content: '';
    display: block;
    height: 12px;
  }
}

/* ================================================================
   VOCABULARY BUILDER — deck rows + 3D flashcards
   ================================================================ */

.vocab-row { padding: 16px 0; border-top: 1px solid var(--line); }
.vocab-row:first-child { border-top: 0; }

/* Head row: word | part-of-speech pill (always dead-centre) | tools.
   Equal 1fr flanks keep the pill centred on the row, not on leftover space. */
.vocab-row-head {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 10px;
}
.vocab-row-pos { text-align: center; }
.vocab-row-tools { justify-content: flex-end; flex-wrap: nowrap; }
/* The head row never wraps its controls under a long word: the word
   flexes and wraps internally, the meter + delete stay pinned right. */
.vocab-row > .row:first-child { flex-wrap: nowrap; align-items: baseline; }
.vocab-row > .row:first-child .vb-word { flex: 1 1 auto; min-width: 0; overflow-wrap: break-word; }
.vocab-row > .row:first-child > .btn { flex: none; align-self: flex-start; }
.vb-word { font-family: var(--display); font-size: 1.12rem; letter-spacing: -.01em; }
.vb-def { margin: 4px 0 2px; max-width: 68ch; }
.vb-example {
  font-family: var(--serif);
  font-style: italic;
  letter-spacing: normal;
  color: var(--muted);
  margin: 2px 0 6px;
  max-width: 66ch;
}
.vb-chips { gap: 6px; margin-top: 6px; }
.vb-chips .overline { font-size: .62rem; margin-right: 2px; }
.vb-boxes { display: inline-flex; gap: 3px; align-items: center; }
.vb-boxes i {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--surface2); border: 1px solid var(--line);
}
.vb-boxes i.on { background: var(--accent); border-color: var(--accent); }

/* --- flashcards --- */
.flashcard-scene {
  perspective: 1400px;
  max-width: 560px;
  margin: 18px auto 0;
  min-height: min(52vh, 440px);
  display: grid;
  align-content: center;
}
.flashcard {
  position: relative;
  min-height: min(48vh, 400px);
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  transform-style: preserve-3d;
  transition: transform .55s cubic-bezier(.32, .9, .35, 1);
}
.flashcard.flipped { transform: rotateY(180deg); }
.fc-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-align: center;
  padding: 28px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow:
    0 1px 0 var(--line),
    0 3px 0 var(--surface),
    0 4px 0 var(--line);
  overflow-y: auto;
}
.fc-face::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: .5;
  background: var(--grain-img) 0 0 / 128px 128px;
}
.fc-back { transform: rotateY(180deg); }
.fc-back .vb-chips { justify-content: center; }
.fc-word {
  font-family: var(--display);
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -.015em;
  line-height: 1.15;
}
.fc-word-sm { font-size: 1.3rem; }
@media (prefers-reduced-motion: reduce) {
  .flashcard { transition: none; }
}

/* ---- practice-screen paper dividers — retired in favour of the
       chapter part-titles on .pb-group (class kept for JS compat) ---- */
.pb-divider { display: none; }
.pb-divider-mark { font-size: .6rem; color: var(--accent); opacity: .6; }

/* ---- word of the day ---- */
.wotd-card { border-left: 3px solid var(--accent); }

/* ---- vocab folder chips ---- */
.vb-folders { gap: 7px; margin-bottom: 4px; }
.vb-folder { cursor: pointer; border: 1px solid var(--line); background: var(--surface); transition: background .15s ease, border-color .15s ease, color .15s ease; }
.vb-folder.active { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-strong); }

/* ================================================================
   ATELIER PRESS — foundation pass (ranks of paper, chapters,
   button constitution, chip species, colophon, answer-sheet margin)
   ================================================================ */

/* ---------- engineering sweep ---------- */

/* Controls never select their labels. */
.btn, .chip, .badge, .nav-btn, .icon-btn, .option, .part-card, .gap-num,
.q-number, .pb-go, .gap-pop-opt, .vb-folder, .player-btn, .text-link,
details summary { user-select: none; -webkit-user-select: none; }

/* Ledger numerals are always tabular. */
.gap-num, .pb-no, .chip, .pb-meta, .sa-progress, .colophon-line,
.mock-paper-min, .dash-mini-scores { font-variant-numeric: tabular-nums; }

/* ---------- rank 1: the sheet (stacked paper edge + grain) ---------- */

.card--sheet {
  position: relative;
  background-color: var(--surface);
  background-image: var(--grain-img);
  background-size: 128px 128px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow:
    0 1px 0 var(--line),
    0 3px 0 var(--surface),
    0 4px 0 var(--line);
}
[data-theme="dark"] .card--sheet {
  box-shadow:
    var(--card-glint),
    0 1px 0 var(--line),
    0 3px 0 var(--surface),
    0 4px 0 var(--line);
}

/* Word of the day is a rank-1 sheet already in the markup. */
.wotd-card {
  background-image: var(--grain-img);
  background-size: 128px 128px;
  box-shadow:
    0 1px 0 var(--line),
    0 3px 0 var(--surface),
    0 4px 0 var(--line);
}
[data-theme="dark"] .wotd-card {
  box-shadow:
    var(--card-glint),
    0 1px 0 var(--line),
    0 3px 0 var(--surface),
    0 4px 0 var(--line);
}

/* ---------- rank 2: the open panel (ruled section, no box) ---------- */

.card--open {
  background: transparent;
  background-image: none;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  padding: 28px 0;
  margin-bottom: 0;
}

/* ---------- dashboard masthead ---------- */

/* The hero sheds its card chrome and closes with a double rule. */
.card.dash-hero {
  background: transparent;
  border: 0;
  border-radius: 0;
  padding: 12px 0 40px;
  border-bottom: 1px solid var(--line);
  box-shadow: 0 4px 0 -3px var(--line);
}

/* Fraunces italic side caption on the numeral's baseline. */
.dash-caption {
  font-family: var(--display);
  font-style: italic;
  font-weight: 480;
  font-size: 1.02rem;
  letter-spacing: normal;
  color: var(--muted);
  max-width: 18ch;
  line-height: 1.35;
}

/* Letterpress-inset grade tab (C1 / C2 / B2). */
.grade-tab {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--sans);
  font-weight: 700;
  font-size: .8rem;
  letter-spacing: .02em;
  color: var(--ink);
  background: var(--surface2);
  border: 0;
  border-radius: var(--radius-xs);
  padding: 5px 13px;
  box-shadow:
    inset 0 1.5px 2px rgba(25, 29, 43, .14),
    inset 0 -1px 0 rgba(255, 255, 255, .5);
}
[data-theme="dark"] .grade-tab {
  box-shadow:
    inset 0 1.5px 2px rgba(0, 0, 0, .5),
    inset 0 0 0 1px var(--line);
}

/* One hairline-bounded streak ledger line under the hero. */
.dash-streakline {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 14px 2px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 6px;
}
.dash-streakline .streak-seal { width: 56px; height: 56px; }
.dash-streakline .sl-text {
  font-family: var(--serif);
  font-style: italic;
  letter-spacing: normal;
  font-size: 1.02rem;
  color: var(--ink);
  margin: 0;
}
.dash-streakline .sl-text .num {
  font-family: var(--mono);
  font-style: normal;
  font-size: .92em;
  font-variant-numeric: tabular-nums;
}

/* ---------- marks ledger (per-skill rows replace stat tiles) ---------- */

.ledger { border-top: 1px solid var(--line); }
.ledger-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) minmax(80px, 180px) auto;
  align-items: center;
  column-gap: 14px;
  min-height: 48px;
  padding: 4px 2px;
  border-bottom: 1px solid var(--line);
}
.ledger-row .lr-idx {
  font-family: var(--mono);
  font-size: .72rem;
  font-variant-numeric: tabular-nums;
  color: var(--paper, var(--faint));
}
.ledger-row .lr-name { font-weight: 600; font-size: .95rem; }
.ledger-row .lr-name .small { font-weight: 400; }
.ledger-row .lr-score {
  font-family: var(--display);
  font-weight: 480;
  font-size: 1.5rem;
  font-variant-numeric: tabular-nums;
  font-optical-sizing: auto;
  letter-spacing: -.01em;
  text-align: right;
  min-width: 2.4ch;
}
.ledger-row .lr-score .lr-of { font-family: var(--sans); font-size: .6em; font-weight: 500; color: var(--muted); }
.ledger-row.is-empty {
  grid-template-columns: auto minmax(0, 1fr) auto;
  min-height: 40px;
}
.ledger-row .lr-begin {
  font-family: var(--serif);
  font-style: italic;
  letter-spacing: normal;
  font-size: .92rem;
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
@media (max-width: 480px) {
  .ledger-row { grid-template-columns: auto minmax(0, 1fr) minmax(64px, 110px) auto; column-gap: 10px; }
}

/* Figure caption under the chart canvas. */
.fig-caption {
  font-family: var(--display);
  font-style: italic;
  font-weight: 480;
  font-size: .92rem;
  letter-spacing: normal;
  color: var(--muted);
  margin: 10px 0 0;
}

/* ---------- practice browser: chapters ---------- */

#view-parts { counter-reset: pbchap; }
#view-parts .pb-group { counter-increment: pbchap; margin: 44px 0 8px; }
#view-parts .pb-group:first-of-type { margin-top: 28px; }
#view-parts .pb-group h2 {
  display: flex;
  align-items: baseline;
  gap: 14px;
}
#view-parts .pb-group h2::before {
  content: counter(pbchap, upper-roman);
  font-family: var(--display);
  font-style: italic;
  font-weight: 480;
  font-size: 2.4rem;
  line-height: .8;
  color: var(--paper, var(--faint));
  opacity: .38;
  transform: translateY(.08em);
}
#view-parts .pb-group h2::after {
  content: '';
  flex: 1;
  border-top: 1px solid var(--line);
  transform: translateY(-.32em);
}

/* Per-paper hue: three touchpoints only (numeral, icon tint, binding edge).
   data-paper is authoritative; nth-child mapping covers current JS markup. */
[data-paper="reading"] { --paper: var(--paper-reading); }
[data-paper="uoe"] { --paper: var(--paper-uoe); }
[data-paper="listening"] { --paper: var(--paper-listening); }
[data-paper="writing"] { --paper: var(--paper-writing); }
[data-paper="speaking"] { --paper: var(--paper-speaking); }
#view-parts > :nth-child(3), #view-parts > :nth-child(4) { --paper: var(--paper-uoe); }
#view-parts > :nth-child(6), #view-parts > :nth-child(7) { --paper: var(--paper-reading); }
#view-parts > :nth-child(9), #view-parts > :nth-child(10) { --paper: var(--paper-writing); }
#view-parts > :nth-child(12), #view-parts > :nth-child(13) { --paper: var(--paper-listening); }
#view-parts > :nth-child(15), #view-parts > :nth-child(16) { --paper: var(--paper-speaking); }

/* Catalogue: one column of rows, no grid gaps. */
#view-parts .grid2 { grid-template-columns: 1fr; gap: 0; margin-bottom: 4px; }
#view-parts .part-card .pb-desc { margin: 2px 0 8px; }
#view-parts .part-card .pb-name { font-size: .98rem; }

/* The two pill chips read as one borderless mono meta line. */
.pb-meta .chip {
  border: 0;
  background: transparent;
  padding: 0;
  border-radius: 0;
  font-family: var(--mono);
  font-size: .7rem;
  font-weight: 400;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--faint);
}
.pb-meta .chip + .chip::before { content: '·'; margin-right: 7px; color: var(--faint); }
/* The recent-score pill becomes a right-aligned mono annotation. */
.pb-meta .badge {
  margin-left: auto;
  background: transparent;
  border: 0;
  padding: 0;
  border-radius: 0;
  font-family: var(--mono);
  font-weight: 400;
  font-size: .72rem;
  letter-spacing: .04em;
}
.pb-meta .badge.neutral { color: var(--muted); }

/* The one recommended part per visit: rank-1 sheet + START HERE stamp. */
.part-card.is-recommended {
  position: relative;
  overflow: visible;
  background-color: var(--surface);
  background-image: var(--grain-img);
  background-size: 128px 128px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--paper, var(--accent));
  border-radius: var(--radius);
  box-shadow:
    0 1px 0 var(--line),
    0 3px 0 var(--surface),
    0 4px 0 var(--line);
  padding: 16px 14px;
  margin: 6px 0 14px;
}
.part-card .pb-stamp {
  position: absolute;
  top: -12px;
  right: 14px;
  font-size: .62rem;
  padding: 5px 11px;
  color: var(--paper, var(--seal-red));
  background: var(--surface);
}

/* ---------- exercise: running head ---------- */

.run-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 9px;
  margin-bottom: 16px;
}
.run-head .rh-meta {
  font-family: var(--mono);
  font-size: .7rem;
  font-weight: 400;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.run-head .btn { flex: none; }
.run-title {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.6rem;
  letter-spacing: -.01em;
  margin: 0 0 12px;
}
.run-about { max-width: 68ch; }
.run-about summary { color: var(--muted); font-size: .9rem; }

/* ---------- exercise: shared measure + answer-sheet margin ---------- */

.question-block, .option-group, .kwt-item, .results-panel { max-width: 68ch; }
.split-view .question-block, .split-view .option-group,
.split-view .kwt-item, .split-view .results-panel { max-width: none; }

/* OMR column: bubbles live in a fixed 40px margin behind a vertical rule. */
.option-group { position: relative; }
.option-group::before {
  content: '';
  position: absolute;
  left: 39px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: var(--line);
  pointer-events: none;
}
.option { padding-left: 0; gap: 15px; }
.option .option-letter { margin-left: 6px; }
/* Modals (engine picker etc.) are settings rows, not an answer sheet. */
.modal .option-group::before { display: none; }
.modal .option { padding-left: 10px; }
.modal .option .option-letter { margin-left: 0; }

/* ---------- button constitution ---------- */

/* Rank 2: re-rolls press INTO the paper (letterpress well). */
.btn-inset {
  background: var(--surface2);
  border-color: var(--line);
  box-shadow: inset 0 1.5px 3px rgba(25, 29, 43, .10);
  font-weight: 500;
}
[data-theme="dark"] .btn-inset { box-shadow: inset 0 1.5px 3px rgba(0, 0, 0, .45); }
@media (hover: hover) {
  .btn-inset:hover {
    background: color-mix(in srgb, var(--surface2) 80%, var(--line));
    box-shadow: inset 0 1.5px 3px rgba(25, 29, 43, .14);
  }
  [data-theme="dark"] .btn-inset:hover { box-shadow: inset 0 1.5px 3px rgba(0, 0, 0, .5); }
}
.btn-inset:active { transform: none; box-shadow: inset 0 2px 4px rgba(25, 29, 43, .18); }

/* Rank 3: quiet underlined text links with a mono arrow. */
.text-link {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: none;
  border: 0;
  padding: 4px 2px;
  min-height: 34px;
  font: inherit;
  font-size: .92rem;
  font-weight: 500;
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  text-decoration-color: color-mix(in srgb, var(--accent) 45%, transparent);
  cursor: pointer;
}
.text-link::after { content: '\2192'; font-family: var(--mono); text-decoration: none; }
.text-link.no-arrow::after { content: none; }
@media (hover: hover) {
  .text-link:hover { text-decoration-color: var(--accent); }
}
.text-link.danger { color: var(--bad); text-decoration-color: color-mix(in srgb, var(--bad) 45%, transparent); }

/* ---------- chip species ---------- */

/* Counts, timers, formats: borderless mono metadata with middots. */
.chip.chip-meta, .chip-meta {
  border: 0;
  background: transparent;
  padding: 0;
  border-radius: 0;
  font-family: var(--mono);
  font-size: .72rem;
  font-weight: 400;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.chip-meta + .chip-meta::before { content: '·'; margin-right: 6px; color: var(--faint); }

/* Language objects (POS, synonyms, collocations): italic ink-wash pill. */
.chip.chip-term, .chip-term {
  font-family: var(--serif);
  font-style: italic;
  letter-spacing: normal;
  font-size: .88rem;
  line-height: 1.45;
  color: var(--ink);
  background: var(--ink-wash);
  border: 1px solid color-mix(in srgb, var(--line) 85%, transparent);
  border-radius: 12px;
  padding: 4px 12px;
  white-space: normal;
}

/* Filters: underline tabs, filled when active. */
.chip.chip-tag, .chip-tag {
  border: 0;
  background: transparent;
  border-radius: var(--radius-xs);
  padding: 5px 10px 7px;
  font-weight: 500;
  font-size: .84rem;
  color: var(--muted);
  cursor: pointer;
  position: relative;
}
.chip-tag::after {
  content: '';
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .22s cubic-bezier(.34, 1.3, .64, 1);
}
.chip-tag.active { color: var(--ink); font-weight: 700; }
.chip-tag.active::after { transform: scaleX(1); }
@media (hover: hover) {
  .chip-tag:hover { color: var(--ink); }
}

/* ---------- results: the marked script ---------- */

.score-fraction {
  font-family: var(--display);
  font-weight: 480;
  font-optical-sizing: auto;
  font-variant-numeric: tabular-nums;
  font-size: clamp(3rem, 8vw, 4.2rem);
  letter-spacing: -.02em;
  line-height: 1;
  color: var(--ink);
}
.score-fraction .sf-of {
  font-size: .45em;
  color: var(--muted);
  font-weight: 480;
}
.verdict-rule {
  height: 3px;
  width: 100%;
  background: var(--ink);
  border-radius: 2px;
  margin: 14px 0 10px;
}
.verdict-rule.good { background: var(--good); }
.verdict-rule.bad { background: var(--bad); }
.ui-stamp.ink { color: var(--ink); background: var(--surface2); }

/* Correct answers collapse to one-line rows; borderless details variant. */
details.result-line {
  border: 0;
  border-radius: 0;
  background: transparent;
  border-bottom: 1px solid var(--line);
  padding: 0 2px;
  margin: 0;
  max-width: 68ch;
}
details.result-line summary { min-height: 40px; padding: 8px 0; font-weight: 400; font-size: .93rem; }
details.result-line summary .rl-num {
  font-family: var(--mono);
  font-size: .74rem;
  color: var(--faint);
  font-variant-numeric: tabular-nums;
}

/* ---------- flashcards: stitched thread progress ---------- */

.fc-thread { position: relative; height: 16px; max-width: 560px; margin: 6px auto 2px; }
.fc-thread::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  border-top: 1px dotted var(--faint);
}
.fc-thread .fc-bead {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  font-size: .58rem;
  line-height: 1;
  color: var(--accent);
  background: var(--bg);
  padding: 2px 5px;
  transition: left .35s cubic-bezier(.22, 1, .36, 1);
}
.fc-folio {
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: center;
  font-variant-numeric: tabular-nums;
  margin: 2px 0 0;
}

/* Deck head count line (replaces the three stat tiles). */
.vb-countline {
  font-family: var(--serif);
  font-style: italic;
  letter-spacing: normal;
  font-size: .98rem;
  color: var(--muted);
  margin: -6px 0 14px;
}
.vb-countline .num { font-family: var(--mono); font-style: normal; font-size: .9em; font-variant-numeric: tabular-nums; }

/* ---------- welcome modal as frontispiece ---------- */

.modal { position: relative; }
.modal:has(.welcome-hero)::before {
  content: '';
  position: absolute;
  inset: 9px;
  border: 1px solid color-mix(in srgb, var(--line) 55%, var(--faint));
  border-radius: calc(var(--radius) - 6px);
  pointer-events: none;
  z-index: 1;
}
.modal:has(.welcome-hero) .modal-actions .btn-primary { width: 100%; }
/* (modal-heading focus suppression lives in the view-agent requests section) */
/* 18px OMR radio dot for picker rows (reuses the option-letter recipe;
   JS renders <span class="option-letter om-18"></span> as the row's first child). */
.option-letter.om-18 { width: 18px; height: 18px; font-size: 0; }
.option-letter.om-18::before { inset: -1.5px; }

/* ---------- colophon footer ---------- */

.colophon {
  margin-top: 56px;
  border-top: 1px solid var(--line);
  padding-bottom: calc(26px + env(safe-area-inset-bottom, 0px));
}
.colophon-rule {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 30px 0 20px;
}
.colophon-rule::before, .colophon-rule::after {
  content: '';
  flex: 1;
  border-top: 1px solid var(--line);
}
.colophon-mark { color: var(--accent); font-size: .68rem; line-height: 1; pointer-events: none; }
.colophon-line {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: .12em;
  color: var(--faint);
  text-align: center;
  text-wrap: balance;
  margin: 0 0 4px;
}
@media (max-width: 480px) {
  .colophon-line { letter-spacing: .07em; font-size: 10px; }
}
.colophon-sign {
  font-family: var(--serif);
  font-style: italic;
  letter-spacing: normal;
  font-size: .92rem;
  color: var(--muted);
  text-align: center;
  margin: 0;
}
.colophon-actions {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 10px;
}
.colophon-actions:empty { display: none; }
.colophon-actions .text-link { color: var(--muted); text-decoration-color: color-mix(in srgb, var(--muted) 45%, transparent); font-size: .85rem; }

/* Footer sits at the desk's foot even on short views. */
body { display: flex; flex-direction: column; }
main.container { flex: 1 0 auto; width: 100%; }
.colophon { flex: none; }

/* ---------- nav overflow: short labels + scroll affordance ---------- */

@media (max-width: 430px) {
  .nav {
    -webkit-mask-image: linear-gradient(90deg, #000 calc(100% - 24px), transparent);
    mask-image: linear-gradient(90deg, #000 calc(100% - 24px), transparent);
  }
  .nav-btn[data-short] { font-size: 0; letter-spacing: 0; }
  .nav-btn[data-short]::before { content: attr(data-short); font-size: .93rem; letter-spacing: .005em; }
}

/* ================================================================
   VIEW-AGENT CSS REQUESTS — refinement pass (merged & deduped)
   Cascade-order note: this section stays LAST in the file. Several
   rules below win by position over equal-specificity legacy rules
   (nth-child paper mapping, .vb-folder.active, .badge tints).
   ================================================================ */

/* ---------- dashboard / vocab slice ---------- */

/* The delete link demoted into the colophon loses its danger colour to
   the `.colophon-actions .text-link` muted override; restore it.
   (45% mix aligned to the canonical .text-link.danger recipe.) */
.colophon-actions .text-link.danger {
  color: var(--bad);
  text-decoration-color: color-mix(in srgb, var(--bad) 45%, transparent);
}

/* Vocab folder filters now carry `chip-tag vb-folder`; the legacy
   `.vb-folder.active` accent-soft pill bleeds through the underline-tab
   look — flatten it so the ink-line alone marks active (both themes). */
.chip-tag.vb-folder.active {
  background: transparent;
  border-color: transparent;
  color: var(--ink);
}

/* ---------- app.js + ui.js refinement ---------- */

/* Practice browser: data-paper (set by app.js on .pb-group + .grid2) is
   authoritative over the legacy nth-child chapter mapping — same
   specificity (1,1,0), later position wins. */
#view-parts [data-paper="reading"] { --paper: var(--paper-reading); }
#view-parts [data-paper="uoe"] { --paper: var(--paper-uoe); }
#view-parts [data-paper="listening"] { --paper: var(--paper-listening); }
#view-parts [data-paper="writing"] { --paper: var(--paper-writing); }
#view-parts [data-paper="speaking"] { --paper: var(--paper-speaking); }

/* Review list: rank-2 groups under numbered section heads. */
.rev-group .section-head { flex-wrap: wrap; }
.rev-group .result-item { max-width: 68ch; }
.rev-group .rev-actions { margin-top: 12px; }
.rev-group .rev-remove {
  color: var(--muted);
  text-decoration-color: color-mix(in srgb, var(--muted) 45%, transparent);
  font-size: .85rem;
}

/* Runner head: timer + re-roll cluster right of the mono running head. */
.run-head { flex-wrap: wrap; row-gap: 8px; }
.run-head .rh-tools {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: none;
  margin-left: auto;
}

/* Results: raw fraction over the verdict rule, stamp overlapping the rule. */
.ui-scorehead { max-width: 68ch; margin: 2px 0 20px; }
.ui-scorehead .ui-score-pct { margin: 4px 0 0; }
.ui-scorehead .verdict-rule { margin-bottom: 0; }
.ui-scorehead .ui-stamp-row {
  display: flex;
  justify-content: flex-end;
  margin: -18px 8px 0 0;
  pointer-events: none;
}

/* Text-links that disable after use (Add to review list). */
.text-link:disabled { color: var(--muted); text-decoration-color: transparent; cursor: default; }

/* Modal headings take programmatic focus on open; they are not
   interactive, so they never wear a ring. */
.modal .modal-head h3:focus,
.modal .modal-head h3:focus-visible { outline: none; box-shadow: none; }

/* ---------- mock test refinement (js/mocktest.js) — namespaced mock- ---------- */

/* Intro: open panel; the three papers ride their identity hues. */
.mock-intro .mock-paper-list { border-top: 0; margin-top: 4px; }
.mock-paper-row[data-paper] .mock-paper-num {
  font-size: .74rem;
  letter-spacing: .04em;
  color: var(--paper);
  border-color: color-mix(in srgb, var(--paper) 35%, var(--line));
}
.mock-lede {
  font-family: var(--serif);
  letter-spacing: normal;
  font-size: 1.05rem;
  line-height: 1.7;
  max-width: 62ch;
  margin: 0 0 26px;
}
.mock-note {
  font-family: var(--serif);
  font-style: italic;
  letter-spacing: normal;
  font-size: .95rem;
  color: var(--muted);
  max-width: 60ch;
  margin: 12px 0 0;
}

/* Interstitials: exam-paper frontispiece on a rank-1 sheet. */
.mock-folio {
  font-family: var(--display);
  font-style: italic;
  font-weight: 480;
  font-size: 3.2rem;
  line-height: 1;
  color: var(--seal-red);
  opacity: .3;
  margin: 12px 0 2px;
  user-select: none;
  -webkit-user-select: none;
}
.mock-inter-meta { display: block; margin: 2px 0 0; }
.mock-interstitial .mock-inter-meta + .muted { max-width: 44ch; margin: 10px auto 0; }

/* In-exam running head (mirrors the practice run-head). */
.mock-part-head { margin-top: 4px; }
.mock-part-desc { max-width: 62ch; margin: -4px 0 18px; }

/* Final report: the payoff sheet. */
.mock-report-hero { padding-top: 10px; }
.mock-hero-row { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.mock-hero-row .score-big { font-size: clamp(3.6rem, 9vw, 5.4rem); line-height: .95; }
.mock-caption {
  font-family: var(--display);
  font-style: italic;
  font-weight: 480;
  font-size: 1.02rem;
  letter-spacing: normal;
  color: var(--muted);
  max-width: 16ch;
  line-height: 1.35;
}
.mock-hero-row .ui-stamp { margin-left: auto; }
@media (max-width: 600px) { .mock-hero-row .ui-stamp { margin-left: 2px; } }
.mock-report-track { padding: 30px 6px 6px; }
.mock-verdict-note {
  font-family: var(--serif);
  font-style: italic;
  letter-spacing: normal;
  font-size: 1.05rem;
  color: var(--ink);
  max-width: 58ch;
  margin: 18px 0 0;
}
.mock-ledger { margin: 2px 0 12px; }
.ledger-row .mock-lr-skip {
  font-family: var(--serif);
  font-style: italic;
  letter-spacing: normal;
  font-size: .92rem;
  color: var(--faint);
}
.mock-review { margin-top: 40px; }
/* Review accordion: score pills become mono marginal annotations
   (transparent bg wins by position over .badge.good/.bad/.neutral tints;
   their good/bad text colours remain, correct in both themes). */
.mock-review-sum .badge {
  background: transparent;
  border: 0;
  padding: 0;
  border-radius: 0;
  font-family: var(--mono);
  font-weight: 400;
  font-size: .74rem;
  letter-spacing: .04em;
}
.mock-review-sum .badge.neutral { color: var(--muted); }
.mock-transcript-wrap { margin: 6px 0 12px; }
/* Review accordion: catalogue rows, not sixteen boxes. */
.mock-review > details {
  border: 0;
  border-radius: 0;
  background: transparent;
  border-bottom: 1px solid var(--line);
  margin: 0;
  padding: 0 2px;
}
.mock-review > details summary { min-height: 52px; }
.mock-review > details[open] { padding-bottom: 14px; }
.mock-report-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  border-top: 1px solid var(--line);
  margin-top: 30px;
  padding-top: 18px;
}

/* ---------- speaking tips refinement (js/parts/speaking.js) — namespaced spk- ---------- */

.card--open.spk-intro { padding-top: 8px; }
.spk-part-head {
  border-bottom: 1px solid var(--line);
  padding-bottom: 12px;
  margin-bottom: 16px;
}
[data-paper] .spk-part-num { color: var(--paper); opacity: .32; }
.tips-card .spk-chips { row-gap: 2px; }

/* colophon credit */
.colophon-by { margin-top: 2px; font-style: italic; color: var(--muted); }