:root {
  --color-bg: #f7f3e9;
  --color-surface: #fffdf8;
  --color-ink: #2b2320;
  --color-ink-muted: #5c5049;
  --color-primary: #2f5233;
  --color-primary-dark: #21391f;
  --color-accent: #b08d57;
  --color-accent-bg: #f1e6d2;
  --color-correct-bg: #e6f4ea;
  --color-correct-text: #2e7d32;
  --color-incorrect-bg: #fdecea;
  --color-incorrect-text: #b3261e;
  --font-serif: Georgia, "Times New Roman", serif;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --radius: 10px;
  --max-content-width: 960px;
}

* {
  box-sizing: border-box;
}

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

body {
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  line-height: 1.5;
}

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

/* Header */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-accent-bg);
}

.site-header__inner {
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--color-primary);
  text-decoration: none;
}

.site-nav a {
  margin-left: 1.25rem;
  text-decoration: none;
  font-weight: 600;
  color: var(--color-ink);
}

.site-nav a:hover {
  color: var(--color-primary);
}

/* Main content */
.site-main {
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

/* Ad slot (Google AdSense responsive unit, under header) */
.ad-slot {
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: 0.75rem 1.25rem 0;
  display: flex;
  justify-content: center;
  /* Soft mitigation for layout shift while the ad loads. The responsive ad format
     decides its own final size at runtime, so this is an approximation, not a
     guarantee - roughly a mobile rectangle's height on small screens. */
  min-height: 100px;
}

@media (min-width: 640px) {
  .ad-slot {
    /* Roughly a leaderboard's height once the ad picks a wider desktop layout. */
    min-height: 90px;
  }
}


.site-footer {
  text-align: center;
  color: var(--color-ink-muted);
  font-size: 0.85rem;
  padding: 2rem 1.25rem;
}

/* Question card */
.question-card {
  background: var(--color-surface);
  border: 1px solid var(--color-accent-bg);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: 0 2px 6px rgba(43, 35, 32, 0.06);
}

@media (min-width: 640px) {
  .question-card {
    padding: 2.5rem;
  }
}

.question-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border: 1px solid var(--color-accent);
  border-radius: 999px;
  color: var(--color-primary-dark);
  background: var(--color-accent-bg);
  font-size: 0.8rem;
  text-decoration: none;
  font-weight: 600;
}

.tag:hover {
  background: var(--color-accent);
  color: #fff;
}

.question-card__kicker {
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.8rem;
  color: var(--color-ink-muted);
  margin: 0 0 0.25rem;
}

.question-card__question {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  line-height: 1.35;
  margin: 0 0 1.25rem;
}

@media (min-width: 640px) {
  .question-card__question {
    font-size: 1.9rem;
  }
}

.question-card__figure {
  margin: 0 0 1.5rem;
  text-align: center;
}

.question-card__figure img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
}

.question-card__figure figcaption {
  font-size: 0.8rem;
  color: var(--color-ink-muted);
  font-style: italic;
  margin-top: 0.5rem;
}

/* Answer choices */
.answer-form__choices {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.choice-button {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border: 1px solid var(--color-accent-bg);
  border-radius: var(--radius);
  padding: 0.9rem 1.1rem;
  min-height: 48px;
  cursor: pointer;
  background: #fff;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.choice-button:hover {
  border-color: var(--color-accent);
}

.choice-button input[type="radio"] {
  accent-color: var(--color-primary);
  width: 1.15rem;
  height: 1.15rem;
  flex-shrink: 0;
}

.choice-button__letter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: var(--color-accent-bg);
  color: var(--color-primary-dark);
  font-weight: bold;
  font-size: 0.85rem;
  text-transform: uppercase;
  flex-shrink: 0;
}

.choice-button__text {
  flex: 1;
}

.choice-button.is-correct {
  border-color: var(--color-correct-text);
  background: var(--color-correct-bg);
}

.choice-button.is-incorrect {
  border-color: var(--color-incorrect-text);
  background: var(--color-incorrect-bg);
}

/* Buttons */
.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-weight: 600;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  padding: 0.85rem 1.75rem;
}

.btn--primary:hover {
  background: var(--color-primary-dark);
}

.btn--link {
  background: none;
  color: var(--color-primary);
  text-decoration: underline;
  padding: 0;
  font-size: 0.9rem;
}

/* Result panel */
.result-panel {
  margin-top: 1.5rem;
  padding: 1.25rem;
  border-radius: var(--radius);
  background: var(--color-accent-bg);
  border-left: 4px solid var(--color-accent);
}

.result-panel__banner {
  font-weight: bold;
  font-size: 1.1rem;
  margin: 0 0 0.5rem;
}

.result-panel.is-correct .result-panel__banner {
  color: var(--color-correct-text);
}

.result-panel.is-incorrect .result-panel__banner {
  color: var(--color-incorrect-text);
}

.result-panel__explanation {
  font-family: var(--font-serif);
  line-height: 1.6;
}

/* Question card actions + nav */
.question-card__actions {
  margin-top: 1rem;
}

.question-nav {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-accent-bg);
  font-weight: 600;
}

.question-nav a {
  text-decoration: none;
}

.question-nav a:hover {
  text-decoration: underline;
}

/* Categories */
.category-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}

@media (min-width: 640px) {
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .category-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.category-card {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  background: var(--color-surface);
  border: 1px solid var(--color-accent-bg);
  border-radius: var(--radius);
  padding: 1.25rem;
  text-decoration: none;
  color: var(--color-ink);
}

.category-card:hover {
  border-color: var(--color-accent);
}

.category-card__name {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--color-primary-dark);
}

.category-card__count {
  color: var(--color-ink-muted);
  font-size: 0.9rem;
}

/* Category landing list */
.question-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.question-list__item {
  background: var(--color-surface);
  border: 1px solid var(--color-accent-bg);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
}

.question-list__item a {
  text-decoration: none;
  font-weight: 600;
}

.question-list__item a:hover {
  text-decoration: underline;
}