* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100vh;
  overflow-x: hidden;
  font-family: 'Inter', sans-serif;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to bottom right, #9ae7f1, #ccf59c);
}

#app {
  width: 100%;
  max-width: 500px;
  min-height: 100vh;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.fade {
  opacity: 0;
}
.fade.fade-in {
  animation: fadeIn 0.5s forwards;
}
@keyframes fadeIn {
  to {
    opacity: 1;
  }
}

/* HEADER collé en haut avec logos identiques */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  padding: 1px 0;
  background-color: linear-gradient(to bottom right, #9ae7f1, #ccf59c);
  border-bottom: 0px solid #2e7d3200;
  z-index: 999;
}

/* Logos identiques malgré des tailles d'origine différentes */
.header-logo {
  width: 120px;
  height: 80px;
  object-fit: contain;
  object-position: center;
  display: block;
  background-color: transparent;
}

.header-logo1 {
  width: 60px;
  height: 50px;
  object-fit: contain;
  object-position: center;
  display: block;
  background-color: transparent;
}

.home-screen {
  width: 100%;
  max-width: 500px;
  padding: 100px 20px 20px; /* 👈 padding top pour dégager le header */
  text-align: center;
}

.quiz-title {
  text-align: center;
  font-size: 2rem;
}

.start-btn, .next-btn {
  background: #198754;
  color: white;
  padding: 10px 20px;
  border: none;
  margin-top: 20px;
  font-size: 1rem;
  cursor: pointer;
  border-radius: 5px;
}

.start-btn:hover, .next-btn:hover {
  background: #146c43;
}

.theme-screen {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  justify-content: center;
}

.theme-button {
  width: 250px;
  height: 150px;
  background-size: cover;
  background-position: center;
  border: none;
  color: white;
  position: relative;
  font-size: 1.2rem;
  font-weight: bold;
  border-radius: 10px;
  overflow: hidden;
  cursor: pointer;
}


.theme-button:hover {
  transform: scale(1.03);
}

.intro-img, .answer-img {
  max-width: 90%;
  height: auto;
  border-radius: 10px;
  margin: 10px 0;
}

.options-container {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.option {
  background: #e3e3e3;
  padding: 10px;
  border-radius: 5px;
  margin: 8px 0;
  cursor: pointer;
  width: 100%;
}

.option.selected {
  background-color: #198754;
  color: white;
}

.option.correct {
  background-color: #28a745;
  color: white;
}

.option.wrong {
  background-color: #dc3545;
  color: white;
}

.progress-container {
  height: 10px;
  background: #ddd;
  border-radius: 5px;
  margin-bottom: 10px;
}

.progress-bar {
  height: 10px;
  background: #198754;
  border-radius: 5px;
}