@font-face {
  font-family: 'Glacial Indifference';
  src: url('fonts/glacialindifference-regular-webfont.woff2') format('woff2'),
    url('fonts/glacialindifference-regular-webfont.woff') format('woff');
  font-weight: normal;
  font-style: normal;
}

@font-face {
  font-family: 'Glacial Indifference';
  src: url('fonts/glacialindifference-bold-webfont.woff2') format('woff2'),
    url('fonts/glacialindifference-bold-webfont.woff') format('woff');
  font-weight: bold;
  font-style: normal;
}

/* Palette shared with the rest of the site:
   #84A98C green bg, #2D3A2E dark green, #52489C purple accent. */
:root {
  --bg: #84A98C;
  --dark: #2D3A2E;
  --accent: #52489C;
  --accent-hover: #3d3574;
  --card: #ffffff;
  --correct: #2e7d4f;
  --correct-bg: #e6f4ec;
  --wrong: #b3261e;
  --wrong-bg: #fbeae9;
}

* {
  box-sizing: border-box;
}

body {
  font-family: 'Glacial Indifference', sans-serif;
  margin: 0;
  padding: 0;
  background-color: var(--bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--dark);
}

#site-header {
  width: 100%;
  text-align: center;
  padding: 2rem 1rem 0.5rem;
}

#site-header h1 {
  margin: 0;
  color: var(--dark);
  font-size: clamp(1.4rem, 5vw, 2.4rem);
}

.tagline {
  margin: 0.25rem 0 0;
  color: var(--dark);
  opacity: 0.85;
  font-size: 1rem;
}

.container {
  width: 100%;
  max-width: 760px;
  padding: 1.5rem 1rem;
  flex: 1;
}

.card {
  background: var(--card);
  border: 3px solid var(--dark);
  border-radius: 10px;
  padding: 1.5rem;
}

h2 {
  margin-top: 0;
  color: var(--dark);
}

h3 {
  color: var(--dark);
  border-bottom: 2px solid var(--bg);
  padding-bottom: 0.35rem;
}

/* ---- Start screen ---- */
fieldset {
  border: 2px solid var(--bg);
  border-radius: 8px;
  margin: 1.25rem 0;
  padding: 1rem;
}

legend {
  font-weight: bold;
  padding: 0 0.5rem;
}

.radio {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  padding: 0.5rem 0;
  cursor: pointer;
  line-height: 1.4;
}

.radio input {
  margin-top: 0.2rem;
  flex-shrink: 0;
  width: 1.1rem;
  height: 1.1rem;
  accent-color: var(--accent);
}

.field {
  margin: 1rem 0;
}

.field label {
  display: block;
  font-weight: bold;
  margin-bottom: 0.35rem;
}

select {
  width: 100%;
  padding: 0.6rem;
  font-family: inherit;
  font-size: 1rem;
  border: 2px solid var(--dark);
  border-radius: 6px;
  background: #fff;
}

.disclaimer {
  margin-top: 1.25rem;
  font-size: 0.8rem;
  line-height: 1.4;
  opacity: 0.8;
}

/* ---- Buttons ---- */
.btn {
  font-family: inherit;
  font-size: 1rem;
  font-weight: bold;
  padding: 0.7rem 1.2rem;
  border: 2px solid var(--dark);
  border-radius: 6px;
  background: #fff;
  color: var(--dark);
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.15);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn.primary:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn.ghost {
  background: transparent;
}

.btn.link {
  border: none;
  background: none;
  color: var(--accent);
  text-decoration: underline;
  padding: 0.5rem 0;
  margin-top: 0.75rem;
}

#startBtn {
  width: 100%;
}

/* ---- Quiz screen ---- */
.quiz-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: bold;
  margin-bottom: 0.5rem;
}

.timer {
  color: var(--accent);
}

.progress-track {
  height: 8px;
  background: var(--bg);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 1.25rem;
}

.progress-fill {
  height: 100%;
  width: 0;
  background: var(--accent);
  transition: width 0.3s ease;
}

.q-category {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--bg);
  color: var(--dark);
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  margin: 0 0 0.75rem;
}

.q-text {
  font-size: 1.15rem;
  font-weight: bold;
  line-height: 1.4;
  margin: 0 0 1.25rem;
}

.options {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.option {
  width: 100%;
  text-align: left;
  font-family: inherit;
  font-size: 1rem;
  line-height: 1.4;
  padding: 0.85rem 1rem;
  border: 2px solid var(--dark);
  border-radius: 8px;
  background: #fff;
  color: var(--dark);
  cursor: pointer;
  transition: background 0.12s ease, border-color 0.12s ease;
}

.option:hover:not(:disabled) {
  background: #f2f2f7;
}

.option.selected {
  border-color: var(--accent);
  background: #ecebf5;
}

.option.correct {
  border-color: var(--correct);
  background: var(--correct-bg);
}

.option.correct::after {
  content: " ✓";
  color: var(--correct);
  font-weight: bold;
}

.option.incorrect {
  border-color: var(--wrong);
  background: var(--wrong-bg);
}

.option.incorrect::after {
  content: " ✗";
  color: var(--wrong);
  font-weight: bold;
}

.option:disabled {
  cursor: default;
}

.explanation {
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  border-radius: 8px;
  line-height: 1.45;
  border-left: 5px solid var(--accent);
  background: #f4f3fa;
}

.explanation.right {
  border-left-color: var(--correct);
  background: var(--correct-bg);
}

.explanation.wrong {
  border-left-color: var(--wrong);
  background: var(--wrong-bg);
}

.flash {
  margin-top: 0.9rem;
  padding: 0.6rem 0.9rem;
  background: #fff6d6;
  border: 1px solid #e0c65a;
  border-radius: 6px;
  font-size: 0.95rem;
}

.quiz-nav {
  display: flex;
  gap: 0.6rem;
  margin-top: 1.5rem;
}

.quiz-nav .btn {
  flex: 1;
}

/* ---- Results screen ---- */
.verdict {
  font-size: 1.6rem;
  font-weight: bold;
  margin: 0.5rem 0;
  text-align: center;
}

.verdict.pass {
  color: var(--correct);
}

.verdict.fail {
  color: var(--wrong);
}

.verdict.neutral {
  color: var(--accent);
}

.score-line {
  text-align: center;
  font-size: 1.25rem;
  font-weight: bold;
  margin: 0.25rem 0;
}

.verdict-note {
  text-align: center;
  opacity: 0.85;
  margin: 0 0 1.25rem;
}

.results-actions {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.results-actions .btn {
  flex: 1;
  min-width: 180px;
}

.review {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.review-item {
  border: 2px solid var(--dark);
  border-left-width: 6px;
  border-radius: 8px;
  padding: 0.9rem 1rem;
}

.review-item.right {
  border-left-color: var(--correct);
}

.review-item.wrong {
  border-left-color: var(--wrong);
}

.review-q {
  font-weight: bold;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.review-line {
  font-size: 0.95rem;
  margin: 0.15rem 0;
}

.review-line .tag {
  font-weight: bold;
  color: var(--dark);
}

.review-exp {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  line-height: 1.45;
  opacity: 0.9;
}

/* ---- Footer ---- */
#site-footer {
  width: 100%;
  padding: 1.25rem 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: center;
  text-align: center;
  font-size: 0.875rem;
  color: var(--dark);
}

#site-footer a {
  color: var(--accent);
  text-decoration: none;
  font-weight: bold;
}

#site-footer a:hover {
  text-decoration: underline;
}

@media (max-width: 480px) {
  .card {
    padding: 1.1rem;
  }

  .quiz-nav {
    flex-wrap: wrap;
  }
}