* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
}

.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 1rem 1.25rem;
}

.gradient {
  background: linear-gradient(135deg, rgba(0, 100, 220, 0.92) 0%, rgba(140, 60, 180, 0.92) 100%);
  color: #fff;
}

.header {
  text-align: center;
  margin-bottom: 1.5rem;
}

.logo {
  font-size: 1.75rem;
  font-weight: 800;
  margin: 0 0 0.25rem;
  color: #ffd700;
  text-shadow: 0 2px 6px rgba(0,0,0,0.25);
}

.tagline {
  margin: 0;
  font-size: 0.95rem;
  opacity: 0.95;
}

.home {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-cards {
  display: flex;
  flex-direction: column;
  gap: 14px;
  width: 100%;
  max-width: 420px;
}

.card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 22px;
  border-radius: 14px;
  text-decoration: none;
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
  box-shadow: 0 4px 14px rgba(0,0,0,0.2);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.25);
}

.card-icon {
  font-size: 1.5rem;
}

.card-pdm { background: linear-gradient(90deg, #22c55e, #16a34a); }
.card-etso { background: linear-gradient(90deg, #f97316, #ea580c); }
.card-vision { background: linear-gradient(90deg, #a855f7, #c084fc); }
.card-optique { background: linear-gradient(90deg, #0d9488, #2dd4bf); }
.card-semantix { background: linear-gradient(90deg, #dc2626, #f87171); }

.footer {
  text-align: center;
  font-size: 0.8rem;
  opacity: 0.85;
  margin-top: 1.5rem;
}

.footer p { margin: 0; }

/* Quiz pages */
.quiz-container {
  max-width: 560px;
  margin: 0 auto;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,0.95);
  text-decoration: none;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.back-link:hover { text-decoration: underline; }

.quiz-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: 8px;
}

.quiz-title { font-size: 1.25rem; margin: 0; }

.score {
  font-size: 1rem;
  font-weight: 700;
  color: #ffd700;
}

.question-block {
  background: rgba(0,0,0,0.2);
  border-radius: 14px;
  padding: 1.35rem;
  margin-bottom: 1.25rem;
}

.question-text {
  font-size: 1.05rem;
  line-height: 1.45;
  margin: 0 0 1rem;
}

.answers {
  list-style: none;
  padding: 0;
  margin: 0;
}

.answers li {
  margin-bottom: 10px;
}

.answer-btn {
  display: block;
  width: 100%;
  text-align: left;
  padding: 14px 16px;
  border: 2px solid rgba(255,255,255,0.4);
  border-radius: 10px;
  background: rgba(255,255,255,0.12);
  color: #fff;
  font-size: 0.98rem;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.answer-btn:hover {
  background: rgba(255,255,255,0.22);
  border-color: rgba(255,255,255,0.6);
}

.answer-btn.correct {
  background: rgba(34, 197, 94, 0.5);
  border-color: #22c55e;
}

.answer-btn.wrong {
  background: rgba(239, 68, 68, 0.4);
  border-color: #ef4444;
}

.answer-btn:disabled {
  cursor: default;
  opacity: 0.9;
}

.quiz-explanation {
  margin-top: 1rem;
  padding: 1rem;
  background: rgba(255,255,255,0.15);
  border-radius: 10px;
  border-left: 4px solid #ffd700;
}

.quiz-explanation-title {
  font-size: 0.9rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
  color: #ffd700;
}

.quiz-explanation-correct {
  font-size: 0.9rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
  color: #86efac;
}

.quiz-explanation-text {
  font-size: 0.9rem;
  line-height: 1.45;
  margin: 0;
  color: rgba(255,255,255,0.95);
}

.next-btn {
  padding: 14px 28px;
  border: none;
  border-radius: 10px;
  background: #ffd700;
  color: #1a1a2e;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  margin-top: 0.5rem;
}

.next-btn:hover { background: #facc15; }

.result-screen {
  text-align: center;
  padding: 2rem 1rem;
}

.result-screen h2 { margin: 0 0 0.5rem; font-size: 1.5rem; }
.result-screen .score { font-size: 1.5rem; margin: 0.5rem 0; }
.result-screen .back-link { margin-top: 1rem; }

/* Semantix – comme l'app : légende, barre de degré, °C */
.semantix-box {
  max-width: 480px;
  margin: 0 auto;
}

.semantix-input-row {
  display: flex;
  gap: 10px;
  margin-bottom: 1rem;
}

.semantix-input-row input {
  flex: 1;
  padding: 14px 16px;
  border-radius: 10px;
  border: 2px solid rgba(255,255,255,0.4);
  background: rgba(255,255,255,0.15);
  color: #fff;
  font-size: 1rem;
}

.semantix-input-row input::placeholder { color: rgba(255,255,255,0.6); }

.semantix-input-row button {
  padding: 14px 20px;
  border: none;
  border-radius: 10px;
  background: #22c55e;
  color: #fff;
  font-weight: 700;
  cursor: pointer;
}

.semantix-rules {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 12px;
  padding: 12px 14px;
  margin-bottom: 1rem;
  text-align: left;
}

.semantix-rules-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: #ffd700;
  margin: 0 0 8px;
}

.semantix-rules ul {
  margin: 0;
  padding-left: 1.2rem;
  font-size: 0.8rem;
  line-height: 1.5;
  color: rgba(255,255,255,0.95);
}

.semantix-rules li { margin-bottom: 4px; }

.semantix-msg-error {
  color: #facc15;
  font-weight: 600;
  font-size: 0.9rem;
}

.semantix-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 1rem;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.9);
}

.semantix-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.semantix-legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.guesses-list {
  margin-top: 1rem;
  max-height: 55vh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding-right: 4px;
}

.guess-item {
  padding: 12px 14px;
  margin-bottom: 10px;
  border-radius: 12px;
  background: rgba(255,255,255,0.15);
}

.guess-item-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}

.guess-text {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
}

.guess-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.guess-heat {
  font-size: 0.9rem;
  font-weight: 700;
}

.guess-temp {
  font-size: 0.8rem;
  font-weight: 600;
  color: rgba(255,255,255,0.9);
}

.guess-bar-wrap {
  margin-top: 4px;
}

.guess-bar-bg {
  height: 10px;
  border-radius: 6px;
  background: rgba(255,255,255,0.2);
  overflow: hidden;
}

.guess-bar-fill {
  height: 100%;
  border-radius: 6px;
  min-width: 4px;
  transition: width 0.2s ease;
}

.guess-item-explanation {
  margin: 8px 0 0;
  padding: 8px 0 0;
  border-top: 1px solid rgba(255,255,255,0.2);
  font-size: 0.9rem;
  color: rgba(255,255,255,0.9);
  line-height: 1.35;
}

.guess-item-last {
  border: 2px solid rgba(255, 215, 0, 0.8);
  box-shadow: 0 0 12px rgba(255, 215, 0, 0.3);
}

/* Confettis Semantix (comme l'app) */
.semantix-confetti-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.45);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.semantix-confetti-overlay .confetti-box { pointer-events: none; }

.semantix-win-btn-wrap { margin-top: 1rem; }

.semantix-win-back {
  display: inline-block;
  padding: 12px 24px;
  background: rgba(34, 197, 94, 0.9);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.semantix-win-back:hover { background: rgba(34, 197, 94, 1); color: #fff; }

.semantix-win-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: #fff;
  margin: 0 0 0.5rem;
  text-shadow: 0 2px 8px rgba(0,0,0,0.4);
}

.semantix-win-sub {
  font-size: 1rem;
  color: rgba(255,255,255,0.95);
  margin: 0 0 1rem;
}

.confetti-box {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.confetti-piece {
  position: absolute;
  top: -20px;
  border-radius: 2px;
  animation: confetti-fall 2.2s ease-in forwards;
  pointer-events: none;
}

@keyframes confetti-fall {
  0% {
    transform: translateY(0) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(100vh) rotate(720deg);
    opacity: 0;
  }
}

.win-msg { color: #ffd700; font-size: 1.2rem; font-weight: 700; margin: 1rem 0; }