:root {
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-correct: #16a34a;
  --color-incorrect: #dc2626;
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --radius: 0.5rem;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
}

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

body {
  margin: 0;
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  display: flex;
  align-items: center;
  background: var(--color-surface);
  border-bottom: 1px solid #e2e8f0;
  padding: 0.75rem 1.5rem;
}

.site-header__gitlab {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-left: auto;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  transition: color 0.15s;
}

.site-header__gitlab:hover {
  color: var(--color-text);
}

.site-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: -0.01em;
}

.site-logo {
  display: inline-flex;
  align-items: center;
}

.site-main {
  padding: 2rem 1rem;
  max-width: 40rem;
  margin: 0 auto;
}

/* Home page */

.home__title {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

.home__subtitle {
  color: var(--color-text-muted);
  margin: 0 0 2rem;
}

.mode-cards {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.mode-card {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1.25rem 1.5rem;
  background: var(--color-surface);
  border: 2px solid #e2e8f0;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.mode-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 4px 6px rgba(37, 99, 235, 0.1);
}

.mode-card__label {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-accent);
}

.mode-card__desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Quiz shell */

.quiz__title {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 1.5rem;
  letter-spacing: -0.02em;
}

/* Question card */

.question-card {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.map-area {
  width: 100%;
  max-width: 42rem;
}

.map-area svg {
  width: 100%;
  height: auto;
  display: block;
}

.question-text {
  font-size: 1rem;
  font-weight: 600;
  margin: 0;
  color: var(--color-text);
}

.qcm {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.choice-btn {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  min-height: 2.75rem;
  padding: 0.6rem 1rem;
  text-align: left;
  font-size: 1rem;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-surface);
  border: 2px solid #e2e8f0;
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.choice-btn:hover {
  border-color: var(--color-accent);
  background: #eff6ff;
}

/* Scoreboard */

.scoreboard {
  display: flex;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px solid #e2e8f0;
  border-radius: var(--radius);
  padding: 0.5rem 1rem;
  margin-bottom: 1.25rem;
}

/* Feedback states */

.choice-btn.is-correct {
  border-color: var(--color-correct);
  background: #f0fdf4;
  color: var(--color-correct);
}

.choice-btn.is-incorrect {
  border-color: var(--color-incorrect);
  background: #fef2f2;
  color: var(--color-incorrect);
}

.choice-btn[disabled] {
  cursor: not-allowed;
  opacity: 0.6;
}

.choice-btn.is-correct[disabled],
.choice-btn.is-incorrect[disabled] {
  opacity: 1;
}

.feedback-msg {
  text-align: center;
  font-weight: 600;
  margin: 0;
}

.feedback-msg--correct {
  color: var(--color-correct);
}

.feedback-msg--incorrect {
  color: var(--color-incorrect);
}

.btn-next {
  -webkit-appearance: none;
  appearance: none;
  display: block;
  width: 100%;
  min-height: 2.75rem;
  padding: 0.6rem 1rem;
  text-align: center;
  font-size: 1rem;
  font-family: inherit;
  font-weight: 600;
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.15s;
}

.btn-next:hover {
  background: var(--color-accent-hover);
}

/* Mode rapide toggle */

.btn-mode-rapide {
  -webkit-appearance: none;
  appearance: none;
  margin-left: auto;
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  font-family: inherit;
  font-weight: 500;
  color: var(--color-text-muted);
  background: transparent;
  border: 1px solid #e2e8f0;
  border-radius: 99px;
  cursor: pointer;
  transition: color 0.15s, background 0.15s, border-color 0.15s;
  white-space: nowrap;
}

.btn-mode-rapide:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-mode-rapide.is-active {
  background: #eff6ff;
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* Auto-advance progress bar */

.autoadvance-bar {
  height: 3px;
  width: 0;
  background: var(--color-accent);
  border-radius: 99px;
  transition: none;
}

.autoadvance-bar.is-running {
  width: 100%;
  transition: width 0.6s linear;
}