/* vocabulary-test.com — clean academic stylesheet */

:root {
  --paper: #faf7f2;
  --paper-2: #f3ede2;
  --ink: #1a1714;
  --ink-2: #3a342c;
  --muted: #6b645a;
  --muted-2: #a39a8c;
  --rule: #d6cdbe;
  --rule-strong: #b8ad9a;
  --accent: oklch(0.48 0.14 258);
  --accent-soft: oklch(0.48 0.14 258 / 0.08);
  --correct: oklch(0.52 0.12 155);
  --correct-soft: oklch(0.52 0.12 155 / 0.1);
  --wrong: oklch(0.52 0.17 25);
  --wrong-soft: oklch(0.52 0.17 25 / 0.1);
  --shadow: 0 1px 0 rgba(26, 23, 20, 0.04), 0 12px 40px -20px rgba(26, 23, 20, 0.12);
  --font-serif: "Source Serif 4", "Source Serif Pro", Georgia, serif;
  --font-sans: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "IBM Plex Mono", "SF Mono", Menlo, monospace;
}

[data-theme="dark"] {
  --paper: #14120f;
  --paper-2: #1d1a16;
  --ink: #f3ede2;
  --ink-2: #d6cdbe;
  --muted: #a39a8c;
  --muted-2: #6b645a;
  --rule: #2c2823;
  --rule-strong: #3a342c;
  --accent: oklch(0.72 0.14 258);
  --accent-soft: oklch(0.72 0.14 258 / 0.14);
  --correct: oklch(0.72 0.12 155);
  --correct-soft: oklch(0.72 0.12 155 / 0.14);
  --wrong: oklch(0.7 0.17 25);
  --wrong-soft: oklch(0.7 0.17 25 / 0.14);
}

* {
  box-sizing: border-box;
}

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

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  transition: background 0.25s ease, color 0.25s ease;
  position: relative;
}


.app {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 40px 120px;
  min-height: 100vh;
}

.mast {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 48px;
}

.mast-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  user-select: none;
}

.mast-mark {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-serif);
  font-size: 28px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.mast-mark .ms {
  font-weight: 300;
  font-style: normal;
  color: var(--muted);
}

.mast-mark .mv {
  font-weight: 500;
  font-style: italic;
}

.mast-title {
  white-space: nowrap;
}

.mast-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.mast-title em {
  font-style: italic;
  color: var(--muted);
  font-weight: 400;
}

.mast-right {
  display: flex;
  align-items: center;
  gap: 18px;
}

.mast-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

@media (max-width: 720px) {
  .mast {
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding-bottom: 24px;
    margin-bottom: 32px;
    text-align: center;
  }
  
  .mast-brand {
    justify-content: center;
  }

  .mast-right {
    width: 100%;
    justify-content: center;
  }

  .mast-meta {
    display: none;
  }
}

/* ——— Section labels ——— */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ——— Landing ——— */
.hero {
  padding: 20px 0 56px;
}

.hero h1 {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: clamp(48px, 7vw, 84px);
  line-height: 1.02;
  letter-spacing: -0.025em;
  margin: 24px 0 20px;
  color: var(--ink);
}

.hero h1 em {
  font-style: italic;
  color: var(--accent);
  font-weight: 400;
}

.hero-tagline {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 32px;
}

.section-heading {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0;
  padding: 48px 0 20px;
}

.how-wrapper {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.how-wrapper .how {
  border: none;
  padding-top: 0;
  padding-bottom: 48px;
}

.hero-sub {
  font-family: var(--font-serif);
  font-size: 20px;
  line-height: 1.5;
  color: var(--ink-2);
  max-width: 620px;
  margin: 0 0 40px;
}

.hero-pron {
  font-family: var(--font-mono);
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.04em;
  margin-top: 8px;
}

/* Buttons */
.btn {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.01em;
  padding: 13px 24px;
  border: none;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.btn-primary {
  background: var(--ink);
  color: var(--paper);
}

.btn-primary:hover {
  background: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px oklch(from var(--accent) l c h / 0.2);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--ink);
}

.btn-secondary:hover {
  background: var(--ink);
  color: var(--paper);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--rule-strong);
}

.btn-ghost:hover {
  border-color: var(--ink);
}

.btn[disabled] {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-arrow {
  font-family: var(--font-serif);
}

/* ——— Three-column explainer ——— */
.how {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  padding: 48px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.how-step .step-num {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 42px;
  color: var(--accent);
  font-weight: 300;
  line-height: 1;
}

.how-step h3 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 400;
  margin: 16px 0 10px;
}

.how-step p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.55;
  margin: 0;
}

/* ——— Stats strip ——— */
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  padding: 36px 0;
  gap: 24px;
}

.stat-num {
  font-family: var(--font-serif);
  font-size: 44px;
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.02em;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 10px;
}

/* ——— Test shell ——— */
.testbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 40px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.progress-track {
  flex: 1;
  height: 2px;
  background: var(--rule);
  margin: 0 20px;
  position: relative;
  overflow: hidden;
}

.progress-fill {
  position: absolute;
  inset: 0 auto 0 0;
  background: var(--ink);
  transition: width 0.4s cubic-bezier(.2, .8, .2, 1);
}

/* ——— Phase 1: checklist ——— */
.check-intro {
  font-family: var(--font-serif);
  font-size: 28px;
  line-height: 1.35;
  font-weight: 400;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.check-intro em {
  font-style: italic;
  color: var(--accent);
}

.check-sub {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 32px;
  max-width: 540px;
}

.check-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 2px;
  border: 1px solid var(--rule);
  background: var(--rule);
  margin-bottom: 40px;
}

.check-cell {
  background: var(--paper);
  padding: 18px 16px;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(.2, .8, .2, 1);
  position: relative;
  user-select: none;
  min-height: 68px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.check-cell:hover {
  background: var(--paper-2);
  transform: translateY(-2px);
  z-index: 2;
  box-shadow: var(--shadow);
}

.check-cell:active {
  transform: translateY(0);
}

.check-cell.on {
  background: var(--ink);
  color: var(--paper);
}

.check-cell.on .check-word {
  color: var(--paper);
}

.check-word {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--ink);
  letter-spacing: -0.005em;
}

.check-mark {
  position: absolute;
  top: 10px;
  right: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted-2);
  letter-spacing: 0.08em;
}

.check-cell.on .check-mark {
  color: var(--paper);
}

.check-count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.06em;
}

/* ——— Phase 2: MCQ ——— */
.mcq {
  padding: 24px 0;
  min-height: 480px;
  display: flex;
  flex-direction: column;
}

.mcq-header {
  margin-bottom: 40px;
}

.mcq-pos {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 8px;
}

.mcq-pron {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 6px;
}

.mcq-word {
  font-family: var(--font-serif);
  font-size: clamp(52px, 7vw, 88px);
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin: 0;
}

.mcq-prompt {
  font-family: var(--font-serif);
  font-size: 17px;
  font-style: italic;
  color: var(--muted);
  margin-top: 18px;
}

.mcq-choices {
  display: grid;
  gap: 2px;
  background: var(--rule);
  border: 1px solid var(--rule);
  margin-bottom: 24px;
}

.mcq-choice {
  background: var(--paper);
  padding: 22px 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 24px;
  text-align: left;
  border: none;
  font-family: var(--font-serif);
  font-size: 19px;
  color: var(--ink);
  transition: background 0.12s ease;
  line-height: 1.35;
}

.mcq-choice:hover:not(:disabled) {
  background: var(--paper-2);
}

.mcq-choice[disabled] {
  cursor: default;
}

.mcq-letter {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.1em;
  border: 1px solid var(--rule-strong);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.15s ease;
}

.mcq-choice:hover:not(:disabled) .mcq-letter {
  border-color: var(--ink);
  color: var(--ink);
}

.mcq-choice.correct {
  background: var(--correct-soft);
  color: var(--ink);
}

.mcq-choice.correct .mcq-letter {
  background: var(--correct);
  border-color: var(--correct);
  color: var(--paper);
}

.mcq-choice.wrong {
  background: var(--wrong-soft);
  color: var(--ink);
}

.mcq-choice.wrong .mcq-letter {
  background: var(--wrong);
  border-color: var(--wrong);
  color: var(--paper);
}

.mcq-choice.dim {
  opacity: 0.4;
}

.mcq-feedback {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 20px;
  margin-top: auto;
}

.mcq-feedback-text {
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--muted);
  font-style: italic;
}

.mcq-feedback-text strong {
  font-style: normal;
  color: var(--ink);
  font-weight: 500;
}

/* ——— Results ——— */
.results {
  padding: 24px 0;
}

.results-kicker {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--rule);
}

.results-kicker .date {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.08em;
}

.results-hero {
  padding: 56px 0;
  text-align: center;
  border-bottom: 1px solid var(--rule);
}

.results-vocab-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.results-vocab-number {
  font-family: var(--font-serif);
  font-size: clamp(88px, 14vw, 168px);
  font-weight: 300;
  line-height: 0.95;
  letter-spacing: -0.045em;
  color: var(--ink);
  font-feature-settings: "tnum" 1;
}

.results-vocab-unit {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 22px;
  color: var(--muted);
  margin-top: 12px;
}

.results-level {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 32px;
  padding: 10px 20px;
  border: 1px solid var(--ink);
  border-radius: 999px;
}

.results-level-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

.results-level-name {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.results-level-note {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--muted);
  font-size: 18px;
  margin-top: 20px;
  max-width: 460px;
  margin-left: auto;
  margin-right: auto;
}

/* Scorecard */
.scorecard {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 36px 0;
  border-bottom: 1px solid var(--rule);
}

.scorecard-cell {
  padding: 0 24px;
  border-right: 1px solid var(--rule);
  transition: all 0.2s ease;
}

.scorecard-cell:hover {
  background: var(--paper-2);
  transform: translateY(-2px);
}

.scorecard-cell:last-child {
  border-right: none;
}

.scorecard-cell:first-child {
  padding-left: 0;
}

.scorecard-num {
  font-family: var(--font-serif);
  font-size: 38px;
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.02em;
}

.scorecard-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 10px;
}

/* Level bar */
.level-bar-wrap {
  padding: 40px 0;
  border-bottom: 1px solid var(--rule);
}

.level-bar-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 20px;
}

.level-bar-head h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 22px;
  margin: 0;
}

.level-bar {
  position: relative;
  height: 40px;
  display: grid;
  grid-template-columns: 8fr 7fr 10fr 15fr 10fr;
  gap: 2px;
  margin-bottom: 12px;
}

.level-seg {
  background: var(--paper-2);
  border-top: 1px solid var(--rule-strong);
  position: relative;
}

.level-seg.active {
  background: var(--accent-soft);
  border-top-color: var(--accent);
}

.level-seg.active::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--accent);
  opacity: 0.22;
}

.level-ticks {
  display: grid;
  grid-template-columns: 8fr 7fr 10fr 15fr 10fr;
  gap: 2px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.level-tick {
  padding-top: 4px;
  text-align: left;
}

.level-tick .tick-range {
  display: block;
  color: var(--muted-2);
  font-size: 9px;
  margin-top: 2px;
}

.level-pin {
  position: absolute;
  top: -14px;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink);
  letter-spacing: 0.06em;
  white-space: nowrap;
  transition: left 1s cubic-bezier(.2, .8, .2, 1);
}

.level-pin::after {
  content: "▾";
  display: block;
  text-align: center;
  margin-top: -2px;
}

/* Missed words list */
.missed {
  padding: 40px 0;
}

.missed h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 26px;
  margin: 0 0 6px;
}

.missed-sub {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 28px;
}

.missed-list {
  border-top: 1px solid var(--rule);
}

.missed-entry {
  display: grid;
  grid-template-columns: 180px 1fr auto;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--rule);
  align-items: baseline;
  transition: padding 0.2s ease;
}

.missed-entry:hover {
  padding-left: 12px;
  background: var(--paper-2);
}

.missed-word {
  font-family: var(--font-serif);
  font-size: 24px;
  letter-spacing: -0.01em;
  font-weight: 400;
}

.missed-word-pron {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  margin-top: 4px;
}

.missed-def {
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.45;
  color: var(--ink-2);
}

.missed-def-pos {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-right: 8px;
}

.missed-status {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--wrong);
}

.missed-status.skipped {
  color: var(--muted);
}

/* CTA footer on results */
.results-cta {
  margin-top: 40px;
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Track picker */
.track-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: var(--rule);
  border: 1px solid var(--rule);
  margin: 40px 0 24px;
}

.track-card {
  background: var(--paper);
  border: none;
  padding: 36px 32px 28px;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-sans);
  color: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: all 0.3s cubic-bezier(.2, .8, .2, 1);
  position: relative;
}

.track-card:hover {
  background: var(--paper);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.track-card:hover .track-cta {
  color: var(--accent);
}

.track-kicker {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.track-title {
  font-family: var(--font-serif);
  font-size: 34px;
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-top: 4px;
}

.track-tagline {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 16px;
  color: var(--muted);
  margin-bottom: 10px;
}

.track-desc {
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-2);
  margin: 0 0 18px;
}

.track-meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 10px 0;
  border-top: 1px solid var(--rule);
  font-size: 12px;
}

.track-meta span {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  font-size: 10px;
}

.track-meta strong {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 14px;
  color: var(--ink);
}

.track-cta {
  margin-top: 18px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  transition: color 0.15s ease;
}

.track-footnote {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--muted);
  font-size: 15px;
  text-align: center;
  margin: 8px 0 0;
}

.track-footnote strong {
  font-style: normal;
  color: var(--ink);
  font-weight: 500;
}

/* CEFR result hero */
.cefr-big {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 28px;
  margin-top: 8px;
}

.cefr-code {
  font-family: var(--font-serif);
  font-size: clamp(96px, 14vw, 176px);
  font-weight: 300;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--accent);
}

.cefr-divider {
  width: 1px;
  align-self: stretch;
  background: var(--rule-strong);
  margin: 16px 0;
}

.cefr-name {
  font-family: var(--font-serif);
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 300;
  letter-spacing: -0.015em;
  line-height: 1.1;
  color: var(--ink);
}

@media (max-width: 720px) {
  .track-grid {
    grid-template-columns: 1fr;
  }

  .cefr-big {
    flex-direction: column;
    gap: 8px;
  }

  .cefr-divider {
    display: none;
  }
}

/* Tweaks panel */
.tweaks-panel {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 260px;
  background: var(--paper);
  border: 1px solid var(--rule-strong);
  padding: 18px 20px 20px;
  z-index: 100;
  box-shadow: var(--shadow);
  border-radius: 3px;
  font-family: var(--font-sans);
  font-size: 13px;
}

.tweaks-panel h4 {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 16px;
  font-weight: 500;
}

.tweak-row {
  margin-bottom: 16px;
}

.tweak-row label {
  display: block;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 8px;
  font-family: var(--font-mono);
}

.tweak-pills {
  display: flex;
  gap: 0;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  overflow: hidden;
}

.tweak-pill {
  flex: 1;
  padding: 8px;
  background: transparent;
  border: none;
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--ink);
  cursor: pointer;
  border-right: 1px solid var(--rule-strong);
}

.tweak-pill:last-child {
  border-right: none;
}

.tweak-pill.on {
  background: var(--ink);
  color: var(--paper);
}

/* Footer */
.footer {
  margin-top: 80px;
  padding-top: 24px;
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* Fade animation */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade {
  animation: fadeUp 0.5s cubic-bezier(.2, .8, .2, 1) both;
}

/* Staggered entrance for hero elements */
.hero .eyebrow {
  animation-delay: 0.1s;
}

.hero h1 {
  animation-delay: 0.2s;
}

.hero .hero-tagline {
  animation-delay: 0.25s;
}

.hero .hero-sub {
  animation-delay: 0.35s;
}

.hero .btn {
  animation-delay: 0.45s;
}

.hero>* {
  animation: fadeUp 0.6s cubic-bezier(.2, .8, .2, 1) both;
}

/* Font-variant tweak: serif-everywhere */
body[data-type="serif"] .btn,
body[data-type="serif"] .eyebrow,
body[data-type="serif"] .mast-meta,
body[data-type="serif"] .testbar,
body[data-type="serif"] .check-count,
body[data-type="serif"] .mcq-pos,
body[data-type="serif"] .mcq-pron,
body[data-type="serif"] .mcq-letter {
  font-family: var(--font-serif);
}

@media (max-width: 720px) {
  .app {
    padding: 24px 20px 80px;
  }

  .how {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .scorecard {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px 0;
  }

  .scorecard-cell {
    border-right: none;
    padding-left: 0 !important;
  }

  .missed-entry {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}

.auth-links {
  display: flex;
  align-items: center;
  gap: 14px;
  justify-content: center;
  flex-shrink: 0;
  white-space: nowrap;
}

.link-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--ink);
  padding: 0;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--rule-strong);
}

.link-btn:hover {
  text-decoration-color: var(--ink);
  color: var(--accent);
}

.btn-small {
  padding: 8px 14px;
  font-size: 12px;
  white-space: nowrap;
}

.user-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: transparent;
  border: 1px solid var(--rule-strong);
  padding: 6px 14px 6px 6px;
  border-radius: 999px;
  cursor: pointer;
  font-family: var(--font-sans);
  color: var(--ink);
  transition: border-color 0.15s ease;
}

.user-chip:hover {
  border-color: var(--ink);
}

.user-avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 13px;
}

.user-name {
  font-size: 13px;
  font-weight: 500;
}

/* ——— Login modal ——— */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(26, 23, 20, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  animation: fadeUp 0.2s ease;
  padding: 24px;
}

.modal {
  background: var(--paper);
  border: 1px solid var(--rule-strong);
  width: 100%;
  max-width: 440px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 32px 36px 28px;
  border-radius: 3px;
  box-shadow: var(--shadow);
  font-family: var(--font-sans);
}

.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.modal-close {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 24px;
  color: var(--muted);
  line-height: 1;
  padding: 0;
  width: 24px;
  height: 24px;
}

.modal-close:hover {
  color: var(--ink);
}

.modal-title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 32px;
  letter-spacing: -0.015em;
  margin: 6px 0 8px;
  line-height: 1.1;
}

.modal-sub {
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 22px;
  line-height: 1.5;
}

.modal-form .field {
  display: block;
  margin-bottom: 14px;
}

.modal-form .field span {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}

.modal-form .field input {
  width: 100%;
  padding: 11px 14px;
  background: var(--paper-2);
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--ink);
  transition: border-color 0.15s ease;
}

.modal-form .field input:focus {
  outline: none;
  border-color: var(--ink);
}

.modal-form>button {
  margin-top: 8px;
}

.modal-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 20px 0 14px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.modal-divider::before,
.modal-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--rule);
}

.modal-switch {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--rule);
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}

.modal-switch button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--accent);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 3px;
  padding: 0;
}

/* ——— Dashboard ——— */
.dash-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 32px;
}

.dash-hello {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: clamp(40px, 5vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 14px 0 14px;
}

.dash-hello em {
  font-style: italic;
  color: var(--accent);
  font-weight: 400;
}

.dash-sub {
  font-family: var(--font-serif);
  font-size: 17px;
  color: var(--muted);
  margin: 0;
  max-width: 520px;
  line-height: 1.5;
}

.dash-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--rule);
  margin-bottom: 40px;
}

.dash-stat {
  padding: 24px 22px;
  border-right: 1px solid var(--rule);
}

.dash-stat:last-child {
  border-right: none;
}

.dash-stat-num {
  font-family: var(--font-serif);
  font-size: 38px;
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1;
}

.dash-stat-small {
  font-size: 22px;
  color: var(--muted);
}

.dash-stat-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-top: 10px;
}

.dash-section {
  padding: 32px 0;
  border-bottom: 1px solid var(--rule);
}

.dash-section:last-of-type {
  border-bottom: none;
}

.dash-section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 20px;
}

.dash-section-head h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 24px;
  margin: 0;
  letter-spacing: -0.01em;
}

.dash-empty {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--muted);
  font-size: 16px;
  margin: 8px 0;
}

.dash-chart-scroll {
  overflow-x: auto;
  overflow-y: hidden;
  border-top: 1px solid var(--rule);
  padding-top: 8px;
  scrollbar-width: thin;
}

.dash-chart-scroll::-webkit-scrollbar {
  height: 6px;
}

.dash-chart-scroll::-webkit-scrollbar-thumb {
  background: var(--rule-strong);
  border-radius: 3px;
}

.dash-chart {
  display: block;
  min-width: 100%;
}

.dash-chart-ticks {
  position: relative;
  height: 18px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.04em;
  margin-top: 6px;
}

.dash-history {
  font-size: 14px;
}

.dash-history-head,
.dash-history-row {
  display: grid;
  grid-template-columns: 1.3fr 1fr 2fr 1fr 1fr;
  gap: 18px;
  padding: 12px 0;
  align-items: baseline;
}

.dash-history-head {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-bottom: 1px solid var(--rule-strong);
}

.dash-history-row {
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-serif);
  font-size: 16px;
}

.dash-history-row .mono {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--muted);
}

.dash-words {
  display: grid;
  gap: 0;
}

.dash-word {
  display: grid;
  grid-template-columns: 200px 1fr auto;
  gap: 20px;
  align-items: baseline;
  padding: 18px 0;
  border-bottom: 1px solid var(--rule);
}

.dash-word-name {
  font-family: var(--font-serif);
  font-size: 22px;
}

.dash-word-pron {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  margin-top: 3px;
}

.dash-word-pos {
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.dash-word-def {
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--ink-2);
  line-height: 1.45;
}

.dash-word-x {
  background: none;
  border: 1px solid var(--rule);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  cursor: pointer;
  color: var(--muted);
  font-size: 18px;
  line-height: 1;
}

.dash-word-x:hover {
  border-color: var(--wrong);
  color: var(--wrong);
}

.dash-footer {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

@media (max-width: 720px) {
  .dash-head {
    flex-direction: column;
    align-items: stretch;
  }

  .dash-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .dash-stat:nth-child(2) {
    border-right: none;
  }

  .dash-stat {
    border-bottom: 1px solid var(--rule);
  }

  .dash-stat:nth-last-child(-n+2) {
    border-bottom: none;
  }

  .dash-history-head,
  .dash-history-row {
    grid-template-columns: 1fr 1fr;
    font-size: 13px;
  }

  .dash-history-head span:nth-child(n+3),
  .dash-history-row span:nth-child(n+3) {
    display: none;
  }

  .dash-word {
    grid-template-columns: 1fr auto;
  }

  .dash-word-def {
    grid-column: 1 / -1;
  }
}

/* SSO buttons */
.sso-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 4px 0 0;
}

.sso-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 11px 14px;
  background: var(--paper);
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  transition: border-color 0.15s ease, background 0.15s ease;
}

.sso-btn:hover {
  border-color: var(--ink);
  background: var(--paper-2);
}

.sso-btn svg {
  flex-shrink: 0;
}

.sso-apple {
  color: var(--ink);
}

@media (max-width: 480px) {
  .sso-row {
    grid-template-columns: 1fr;
  }
}
/* Admin Dashboard Styles */
.admin-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.admin-card {
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(214, 205, 190, 0.5);
  padding: 20px;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.admin-card-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #8c8477;
}

.admin-card-val {
  font-size: 28px;
  font-weight: 500;
  color: #2c2925;
}

.admin-table-container {
  margin-top: 16px;
  border: 1px solid #d6cdbe;
  border-radius: 8px;
  overflow-y: auto;
  max-height: 400px;
  background: white;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.admin-table th {
  text-align: left;
  padding: 12px 16px;
  background: #f9f8f6;
  border-bottom: 1px solid #d6cdbe;
  font-weight: 600;
  color: #6b645a;
}

.admin-table td {
  padding: 12px 16px;
  border-bottom: 1px solid #f0ede8;
}

.admin-table tr:last-child td {
  border-bottom: none;
}

.user-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ——— Bayesian IRT Radar Chart Breakdown ——— */
.radar-section {
  margin: 64px 0;
  animation: fadeUp 0.6s cubic-bezier(.2, .8, .2, 1) both;
}

.radar-section h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 26px;
  margin: 0 0 6px;
  color: var(--ink);
}

.radar-section-subtitle {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 32px;
}

.radar-container {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 40px;
  align-items: center;
  margin-top: 24px;
}

.radar-chart-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 20px;
  aspect-ratio: 1;
}

.radar-chart {
  width: 100%;
  max-width: 320px;
  height: auto;
  overflow: visible;
}

.radar-grid {
  fill: none;
  stroke: var(--rule-strong);
  stroke-width: 0.75px;
  stroke-dasharray: 2 3;
  opacity: 0.5;
}

.radar-axis-line {
  stroke: var(--rule-strong);
  stroke-width: 1px;
  opacity: 0.4;
}

.radar-polygon {
  fill: var(--accent-soft);
  stroke: var(--accent);
  stroke-width: 2.5px;
  stroke-linejoin: round;
  transition: all 0.4s cubic-bezier(.2, .8, .2, 1);
  transform-origin: 180px 180px;
  animation: radarReveal 1s cubic-bezier(.16, 1, 0.3, 1) both;
}

.radar-vertex-group {
  cursor: pointer;
}

.radar-dot {
  fill: var(--paper);
  stroke: var(--accent);
  stroke-width: 2px;
  transition: r 0.25s cubic-bezier(.16, 1, 0.3, 1), stroke-width 0.25s, fill 0.25s;
}

.radar-vertex-group:hover .radar-dot,
.radar-dot.active {
  fill: var(--accent);
  stroke-dasharray: none;
  stroke-width: 3px;
}

.radar-label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  fill: var(--muted);
  transition: fill 0.2s ease, font-weight 0.2s ease;
  cursor: pointer;
  user-select: none;
}

.radar-label.active,
.radar-label:hover {
  fill: var(--accent);
  font-weight: 700;
}

.radar-details-card {
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 28px;
  min-height: 240px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  transition: all 0.3s cubic-bezier(.2, .8, .2, 1);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.radar-details-card.glass {
  background: color-mix(in oklab, var(--paper-2) 85%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.radar-details-card:hover {
  border-color: var(--rule-strong);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .radar-details-card:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.radar-details-card .card-content {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px 20px;
}

.radar-details-card .card-icon {
  font-size: 36px;
  line-height: 1.1;
  grid-row: span 2;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 8px;
  width: 56px;
  height: 56px;
}

.radar-details-card .card-meta {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.radar-details-card .card-meta h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 400;
  margin: 0;
  color: var(--ink);
  letter-spacing: -0.015em;
  text-transform: capitalize;
}

.radar-details-card .card-score {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.radar-details-card .card-score strong {
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--accent);
  font-weight: 500;
  text-transform: none;
  letter-spacing: -0.01em;
  margin-left: 4px;
}

.radar-details-card .card-desc {
  grid-column: span 2;
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink-2);
  margin: 0;
}

.radar-details-card .card-tip {
  grid-column: span 2;
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
  padding-top: 16px;
  border-top: 1px solid var(--rule);
}

.radar-details-card .card-tip strong {
  color: var(--ink);
  font-weight: 500;
}

.radar-details-card .card-content-placeholder {
  text-align: center;
  color: var(--muted);
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 15px;
  line-height: 1.6;
  padding: 0 16px;
}

@keyframes radarReveal {
  from {
    transform: scale(0.4);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

@media (max-width: 900px) {
  .radar-container {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .radar-chart-wrapper {
    max-width: 320px;
    margin: 0 auto;
  }
  .radar-details-card {
    min-height: auto;
    padding: 24px;
  }
}

/* ——— New Structured Footer ——— */
.structured-footer {
  margin-top: 100px;
  padding: 60px 0 40px;
  border-top: 1px solid var(--rule-strong);
  font-family: var(--font-sans);
  color: var(--ink-2);
}

.structured-footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 48px;
}

.structured-footer-col h4 {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 20px;
  font-weight: 600;
}

.structured-footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.structured-footer-col li {
  margin-bottom: 12px;
  font-size: 14px;
}

.structured-footer-col a {
  color: var(--ink-2);
  text-decoration: none;
  transition: color 0.15s ease;
}

.structured-footer-col a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.structured-footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--rule);
  padding-top: 24px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
}

@media (max-width: 720px) {
  .structured-footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .structured-footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}

/* ——— Share Badge Modal ——— */
.share-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(26, 23, 20, 0.65);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 300;
  animation: fadeIn 0.2s ease;
  padding: 20px;
}

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

.share-modal {
  background: var(--paper);
  border: 1px solid var(--rule-strong);
  width: 100%;
  max-width: 580px;
  max-height: 95vh;
  overflow-y: auto;
  padding: 28px 32px;
  border-radius: 4px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  font-family: var(--font-sans);
  animation: fadeUp 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.badge-preview-wrap {
  width: 100%;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--paper-2);
  padding: 12px;
  margin: 16px 0 20px;
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.03);
  display: flex;
  justify-content: center;
}

.badge-preview-img {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 2px;
  border: 1px solid var(--rule-strong);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.share-actions-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 24px 0 12px;
}

.btn-share {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 12px 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--ink-2);
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 500;
}

.btn-share:hover {
  background: var(--paper);
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-share svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.share-desc {
  font-size: 12px;
  color: var(--muted);
  text-align: center;
  margin: 12px 0 0;
  line-height: 1.5;
}

.badge-btn-highlight {
  position: relative;
  background: var(--accent) !important;
  color: var(--paper) !important;
  border-color: var(--accent) !important;
}

.badge-btn-highlight:hover {
  background: var(--ink) !important;
  border-color: var(--ink) !important;
}