:root {
  color-scheme: light dark;
  --ink: #12243b;
  --ink-soft: #35506d;
  --paper: #f8f3e8;
  --paper-strong: #fffdf8;
  --line: rgba(18, 36, 59, 0.12);
  --blue: #163d7a;
  --blue-bright: #1f5fbf;
  --red: #b12d2b;
  --gold: #d49b2d;
  --green: #2c7a52;
  --shadow: 0 24px 60px rgba(18, 36, 59, 0.12);
  --radius: 24px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", serif;
  background:
    radial-gradient(circle at top left, rgba(212, 155, 45, 0.17), transparent 24rem),
    radial-gradient(circle at top right, rgba(31, 95, 191, 0.14), transparent 28rem),
    linear-gradient(180deg, #f3eee1 0%, #fcfaf4 32%, #f5efe3 100%);
}

a {
  color: var(--blue);
}

.page-shell {
  width: min(1220px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1rem 0 4rem;
}

.hero,
.section,
.panel,
.results {
  backdrop-filter: blur(10px);
}

.hero {
  background: rgba(255, 252, 246, 0.84);
  border: 1px solid rgba(18, 36, 59, 0.08);
  border-radius: 32px;
  padding: 1rem 1.25rem 2rem;
  box-shadow: var(--shadow);
}

.tricolor-bar {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.5rem;
}

.tricolor-bar span {
  display: block;
  height: 0.45rem;
  border-radius: 999px;
}

.tricolor-bar span:nth-child(1) {
  background: var(--blue);
}

.tricolor-bar span:nth-child(2) {
  background: #f5f1ea;
  border: 1px solid rgba(18, 36, 59, 0.08);
}

.tricolor-bar span:nth-child(3) {
  background: var(--red);
}

.top-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: flex-end;
  padding: 1rem 0 1.5rem;
  font-family: "Avenir Next Condensed", "Franklin Gothic Medium", "Arial Narrow", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
}

.top-nav a {
  text-decoration: none;
  color: var(--ink-soft);
}

.hero-grid,
.overview-grid,
.cram-grid,
.memory-grid,
.simulator-grid,
.study-duo,
.timeline-item,
.source-card,
.scenario-list {
  display: grid;
  gap: 1.25rem;
}

.hero-grid {
  grid-template-columns: 1.35fr 0.95fr;
  align-items: start;
}

.hero-copy h1,
.section-heading h2,
.panel h3,
.results h3 {
  font-family: "Avenir Next Condensed", "DIN Alternate", "Franklin Gothic Medium", sans-serif;
  letter-spacing: 0.01em;
  margin: 0;
}

.hero-copy h1 {
  font-size: clamp(2.4rem, 5vw, 4.6rem);
  line-height: 0.95;
  max-width: 12ch;
}

.eyebrow {
  margin: 0 0 0.65rem;
  color: var(--red);
  font-family: "Avenir Next Condensed", "Franklin Gothic Medium", "Arial Narrow", sans-serif;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-text,
.panel p,
.study-col li,
.timeline-copy,
.source-body,
.results p,
.status-hint,
.mini-note p {
  font-size: 1rem;
  line-height: 1.55;
}

.hero-actions,
.sim-buttons,
.exam-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.5rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0.85rem 1.2rem;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  font: inherit;
  text-decoration: none;
  transition: transform 140ms ease, box-shadow 140ms ease, background 140ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  background: linear-gradient(135deg, var(--blue), var(--blue-bright));
  color: white;
  box-shadow: 0 14px 26px rgba(31, 95, 191, 0.25);
}

.button.secondary {
  background: rgba(255, 255, 255, 0.82);
  border-color: rgba(18, 36, 59, 0.12);
  color: var(--ink);
}

.exam-card,
.panel,
.results,
.question-card {
  background: rgba(255, 253, 248, 0.92);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 12px 32px rgba(18, 36, 59, 0.07);
}

.exam-card {
  padding: 1.35rem;
}

.exam-card h2 {
  margin: 0 0 1rem;
  font-size: 1.35rem;
}

.fact-list {
  margin: 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.6rem;
}

.distribution {
  margin-top: 1.3rem;
  padding-top: 1rem;
  border-top: 1px dashed rgba(18, 36, 59, 0.18);
}

.distribution-title {
  margin: 0 0 0.9rem;
  font-weight: 700;
}

.distribution-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid rgba(18, 36, 59, 0.06);
}

.section {
  margin-top: 1.4rem;
  padding: 1.4rem;
  background: rgba(255, 252, 246, 0.76);
  border: 1px solid rgba(18, 36, 59, 0.08);
  border-radius: 30px;
}

.section-heading {
  margin-bottom: 1.1rem;
}

.section-heading h2 {
  font-size: clamp(1.75rem, 3vw, 2.65rem);
}

.overview-grid {
  grid-template-columns: repeat(4, 1fr);
}

.panel {
  padding: 1.2rem;
}

.panel.emphasis {
  background: linear-gradient(145deg, rgba(22, 61, 122, 0.94), rgba(31, 95, 191, 0.9));
  color: white;
}

.panel.emphasis p,
.panel.emphasis h3 {
  color: white;
}

.study-sections {
  display: grid;
  gap: 1rem;
}

.cram-grid {
  grid-template-columns: repeat(3, 1fr);
}

.cram-card {
  padding: 1.1rem;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.82);
}

.cram-card h3 {
  margin: 0 0 0.85rem;
  font-size: 1.15rem;
}

.cram-card ul {
  margin: 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.55rem;
}

.cram-item {
  display: grid;
  gap: 0.28rem;
}

.cram-translation {
  display: block;
  color: var(--ink-soft);
  font-size: 0.96rem;
  line-height: 1.45;
}

.study-block {
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid var(--line);
  border-radius: 26px;
  overflow: hidden;
}

.study-block summary {
  list-style: none;
  cursor: pointer;
  padding: 1.15rem 1.2rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.75), rgba(244, 236, 220, 0.8));
}

.study-block summary::-webkit-details-marker {
  display: none;
}

.study-block summary h3 {
  font-size: 1.3rem;
}

.study-block summary p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.study-duo {
  grid-template-columns: 1fr 1fr;
  padding: 0 1.2rem 1.2rem;
}

.study-col {
  padding: 1rem 1rem 1rem 1.1rem;
  border-radius: 20px;
}

.study-col.fr {
  background: rgba(22, 61, 122, 0.06);
}

.study-col.en {
  background: rgba(177, 45, 43, 0.05);
}

.study-col h4 {
  margin: 0 0 0.8rem;
  font-size: 1rem;
  font-family: "Avenir Next Condensed", "Franklin Gothic Medium", sans-serif;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.study-col ul {
  margin: 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.7rem;
}

.context-sentence {
  display: inline;
  cursor: help;
  text-decoration-line: underline;
  text-decoration-style: dotted;
  text-decoration-color: rgba(22, 61, 122, 0.45);
  text-underline-offset: 0.18em;
  transition: color 140ms ease, text-decoration-color 140ms ease;
}

.context-sentence:hover,
.context-sentence:focus-visible {
  color: var(--blue);
  text-decoration-color: rgba(22, 61, 122, 0.95);
  outline: none;
}

.timeline-list,
.source-list {
  display: grid;
  gap: 0.9rem;
}

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

.scenario-card {
  padding: 1.1rem;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--line);
}

.scenario-card h3 {
  margin: 0.3rem 0 0.5rem;
  font-size: 1.1rem;
}

.scenario-card p {
  margin: 0.4rem 0 0;
}

.scenario-label {
  color: var(--ink-soft);
  font-family: "Avenir Next Condensed", "DIN Alternate", sans-serif;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.74rem;
}

.timeline-item {
  grid-template-columns: 120px 1fr 1fr;
  align-items: start;
  padding: 1rem 1.1rem;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--line);
}

.timeline-date {
  font-family: "Avenir Next Condensed", "DIN Alternate", sans-serif;
  font-size: 1.35rem;
  color: var(--red);
}

.timeline-copy strong {
  display: block;
  margin-bottom: 0.3rem;
}

.memory-grid {
  grid-template-columns: 320px 1fr;
  align-items: start;
}

.memory-card-panel {
  min-height: 21rem;
}

.memory-card {
  min-height: 19rem;
  display: grid;
  gap: 1rem;
  align-content: start;
}

.memory-face {
  padding: 1.2rem;
  border-radius: 20px;
  border: 1px solid rgba(18, 36, 59, 0.08);
  background: rgba(255, 255, 255, 0.76);
}

.memory-face h3,
.memory-answer h3 {
  margin: 0 0 0.65rem;
  font-size: 0.95rem;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: "Avenir Next Condensed", "DIN Alternate", sans-serif;
}

.memory-face p,
.memory-answer p {
  margin: 0.35rem 0 0;
  line-height: 1.55;
}

.memory-answer {
  padding: 1.2rem;
  border-radius: 20px;
  background: rgba(22, 61, 122, 0.07);
}

.memory-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.memory-placeholder {
  margin: 0;
  color: var(--ink-soft);
}

.context-tooltip {
  position: fixed;
  z-index: 50;
  width: min(26rem, calc(100vw - 1.5rem));
  padding: 1rem 1.05rem;
  border-radius: 20px;
  border: 1px solid rgba(18, 36, 59, 0.12);
  background: rgb(255, 253, 248);
  box-shadow: 0 22px 44px rgba(18, 36, 59, 0.2);
  pointer-events: none;
}

.context-tooltip h3,
.context-tooltip h4 {
  margin: 0;
  font-family: "Avenir Next Condensed", "DIN Alternate", sans-serif;
}

.context-tooltip h3 {
  font-size: 1rem;
  color: var(--blue);
}

.context-tooltip h4 {
  margin-top: 0.8rem;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.context-tooltip p {
  margin: 0.35rem 0 0;
  line-height: 1.5;
  font-size: 0.97rem;
}

.simulator-grid {
  grid-template-columns: 320px 1fr;
  align-items: start;
}

.sticky-panel {
  position: sticky;
  top: 1rem;
}

.control {
  display: grid;
  gap: 0.45rem;
  margin-bottom: 1rem;
}

.control span,
.status-label {
  font-family: "Avenir Next Condensed", "Franklin Gothic Medium", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  color: var(--ink-soft);
}

.toggle-control {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 1rem;
  padding: 0.85rem 0.95rem;
  border-radius: 16px;
  border: 1px solid rgba(18, 36, 59, 0.1);
  background: rgba(255, 255, 255, 0.78);
}

.toggle-control span {
  font-family: inherit;
  font-size: 0.98rem;
  letter-spacing: normal;
  text-transform: none;
  color: var(--ink);
}

.toggle-control input {
  width: 1rem;
  height: 1rem;
}

select {
  width: 100%;
  min-height: 2.8rem;
  border-radius: 14px;
  border: 1px solid rgba(18, 36, 59, 0.14);
  background: white;
  color: var(--ink);
  padding: 0.65rem 0.8rem;
  font: inherit;
}

.mini-note {
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  border-radius: 16px;
  background: rgba(22, 61, 122, 0.06);
}

.training-stats {
  display: grid;
  gap: 0.7rem;
  margin-top: 1rem;
}

.training-stat {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 0.9rem;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(18, 36, 59, 0.08);
}

.training-stat span {
  color: var(--ink-soft);
}

.training-stat strong {
  font-family: "Avenir Next Condensed", "DIN Alternate", sans-serif;
  font-size: 1.1rem;
}

.status-panel {
  margin-bottom: 1rem;
}

.status-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.status-value {
  margin: 0.2rem 0 0;
  font-family: "Avenir Next Condensed", "DIN Alternate", sans-serif;
  font-size: 1.8rem;
}

.exam-form {
  display: grid;
  gap: 1rem;
}

.question-card {
  padding: 1.1rem;
}

.question-topline {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.8rem;
}

.question-index {
  font-family: "Avenir Next Condensed", "DIN Alternate", sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--red);
  font-size: 0.8rem;
}

.question-theme {
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.question-text {
  margin: 0 0 1rem;
  display: grid;
  gap: 0.45rem;
}

.question-text .fr-text {
  font-weight: 700;
  font-size: 1.06rem;
}

.question-text .en-text {
  color: var(--ink-soft);
}

.choices {
  display: grid;
  gap: 0.7rem;
}

.choice {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.8rem;
  align-items: start;
  padding: 0.8rem 0.85rem;
  border-radius: 16px;
  border: 1px solid rgba(18, 36, 59, 0.09);
  background: rgba(255, 255, 255, 0.8);
}

.choice input {
  margin-top: 0.35rem;
}

.choice .fr-choice {
  font-weight: 700;
}

.choice .en-choice {
  color: var(--ink-soft);
  margin-top: 0.2rem;
  font-size: 0.95rem;
}

.exam-actions {
  margin-top: 1rem;
}

.compact-buttons {
  margin-top: 0.75rem;
}

.results {
  margin-top: 1.2rem;
  padding: 1.2rem;
}

.results-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.score-pill {
  border-radius: 999px;
  padding: 0.45rem 0.85rem;
  font-family: "Avenir Next Condensed", "DIN Alternate", sans-serif;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.score-pill.pass {
  background: rgba(44, 122, 82, 0.12);
  color: var(--green);
}

.score-pill.fail {
  background: rgba(177, 45, 43, 0.12);
  color: var(--red);
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
  margin-top: 1rem;
}

.result-card {
  padding: 0.9rem;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(18, 36, 59, 0.08);
}

.result-card strong {
  display: block;
  font-family: "Avenir Next Condensed", "DIN Alternate", sans-serif;
  font-size: 1.45rem;
  margin-top: 0.2rem;
}

.review-list {
  display: grid;
  gap: 0.8rem;
  margin-top: 1.2rem;
}

.review-item {
  padding: 0.9rem;
  border-radius: 18px;
  border: 1px solid rgba(18, 36, 59, 0.08);
  background: rgba(252, 248, 239, 0.92);
}

.review-item.correct {
  border-color: rgba(44, 122, 82, 0.22);
}

.review-item.incorrect {
  border-color: rgba(177, 45, 43, 0.2);
}

.review-answer {
  display: grid;
  gap: 0.25rem;
  margin-top: 0.6rem;
}

body.french-only .en-text,
body.french-only .en-choice,
body.french-only .memory-face .en-copy,
body.french-only .memory-answer .en-copy {
  display: none;
}

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

.source-card {
  grid-template-columns: 1fr auto;
  padding: 1rem 1.1rem;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
}

.source-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1.1rem;
}

.source-tag {
  align-self: start;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  background: rgba(22, 61, 122, 0.08);
  color: var(--blue);
  font-family: "Avenir Next Condensed", "DIN Alternate", sans-serif;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.74rem;
}

.hidden {
  display: none !important;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #eef3fb;
    --ink-soft: #b8c7dc;
    --line: rgba(214, 226, 243, 0.14);
    --blue: #8ab4ff;
    --blue-bright: #5d94ff;
    --red: #ff8c86;
    --green: #82d6a5;
    --shadow: 0 24px 60px rgba(0, 0, 0, 0.38);
  }

  body {
    background:
      radial-gradient(circle at top left, rgba(212, 155, 45, 0.12), transparent 24rem),
      radial-gradient(circle at top right, rgba(93, 148, 255, 0.16), transparent 28rem),
      linear-gradient(180deg, #0f1726 0%, #111d31 38%, #0b1220 100%);
  }

  a {
    color: #a6c4ff;
  }

  .hero,
  .section {
    background: rgba(15, 23, 38, 0.8);
    border-color: rgba(214, 226, 243, 0.1);
  }

  .exam-card,
  .panel,
  .results,
  .question-card,
  .cram-card,
  .study-block,
  .scenario-card,
  .timeline-item,
  .memory-face,
  .source-card,
  .result-card,
  .review-item,
  .training-stat,
  .toggle-control,
  .context-tooltip {
    background: rgb(17, 27, 44);
    border-color: rgba(214, 226, 243, 0.1);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.28);
  }

  .study-block summary {
    background: linear-gradient(135deg, rgba(28, 40, 63, 0.92), rgba(18, 29, 47, 0.92));
  }

  .study-col.fr {
    background: rgba(93, 148, 255, 0.12);
  }

  .study-col.en {
    background: rgba(255, 140, 134, 0.08);
  }

  .memory-answer,
  .mini-note {
    background: rgba(93, 148, 255, 0.1);
  }

  .button.secondary,
  .choice,
  .source-tag {
    background: rgba(25, 38, 60, 0.9);
    border-color: rgba(214, 226, 243, 0.1);
    color: var(--ink);
  }

  .source-tag {
    color: #a6c4ff;
  }

  select {
    background: rgba(12, 19, 31, 0.95);
    border-color: rgba(214, 226, 243, 0.14);
    color: var(--ink);
  }

  .distribution {
    border-top-color: rgba(214, 226, 243, 0.2);
  }

  .distribution-row,
  .choice,
  .source-card,
  .training-stat,
  .review-item {
    border-color: rgba(214, 226, 243, 0.08);
  }

  .tricolor-bar span:nth-child(2) {
    background: rgba(240, 244, 252, 0.86);
    border-color: rgba(214, 226, 243, 0.18);
  }

  .context-sentence {
    text-decoration-color: rgba(166, 196, 255, 0.45);
  }

  .context-sentence:hover,
  .context-sentence:focus-visible {
    color: #a6c4ff;
    text-decoration-color: rgba(166, 196, 255, 0.95);
  }

  .question-text .en-text,
  .choice .en-choice,
  .study-block summary p,
  .scenario-label,
  .memory-meta,
  .memory-placeholder,
  .source-body,
  .top-nav a,
  .training-stat span,
  .context-tooltip h4 {
    color: var(--ink-soft);
  }
}

@media (max-width: 1080px) {
  .hero-grid,
  .cram-grid,
  .memory-grid,
  .simulator-grid,
  .overview-grid,
  .source-list,
  .scenario-list {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 760px) {
  .page-shell {
    width: min(100% - 1rem, 100%);
  }

  .hero,
  .section {
    border-radius: 24px;
    padding: 1rem;
  }

  .study-duo,
  .timeline-item,
  .status-meta,
  .results-grid {
    grid-template-columns: 1fr;
  }

  .overview-grid {
    grid-template-columns: 1fr;
  }

  .top-nav {
    justify-content: flex-start;
  }

  .hero-copy h1 {
    max-width: none;
  }
}