* {
  box-sizing: border-box;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}

body {
  margin: 0;
  background: #edf1f7;
  color: #222;
}

.screen {
  display: none;
  min-height: 100vh;
  padding: 20px;
}

.screen.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

.card {
  background: #fff;
  padding: 25px 30px;
  border-radius: 16px;
  max-width: 700px;
  width: 100%;
  box-shadow: 0 8px 25px rgba(0,0,0,0.1);
  text-align: center;
}

h1, h2, h3 {
  margin-top: 0;
  color: #1f3b63;
}

input[type="text"] {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid #d3d7dd;
  margin-bottom: 15px;
  font-size: 1rem;
}

.primary {
  background: #1f6ec7;
  color: #fff;
  border: none;
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 10px;
}

.secondary {
  background: #fff;
  border: 1px solid #1f6ec7;
  color: #1f6ec7;
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
  margin-top: 12px;
}

.primary:hover,
.secondary:hover {
  opacity: 0.9;
}

.character-row {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin: 15px 0;
  flex-wrap: wrap;
}

.character-btn {
  border: 2px solid transparent;
  background: #f1f5fb;
  border-radius: 12px;
  padding: 12px 15px;
  cursor: pointer;
  width: 150px;
}

.character-btn img {
  width: 70px;
  height: 70px;
  object-fit: contain;
  display: block;
  margin: 0 auto 6px;
}

.character-btn.selected {
  border: 2px solid #1f6ec7;
  background: #e8f1ff;
}

.note {
  font-size: 0.85rem;
  color: #666;
}

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
  z-index: 5;
}

.map-container {
  margin-top: 70px;
  text-align: center;
  width: 100%;
}

.map-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  max-width: 700px;
  margin: 24px auto 0;
}

.area-btn {
  background: #fff;
  border: 2px solid #1f6ec7;
  border-radius: 14px;
  padding: 20px 16px;
  font-weight: 600;
  cursor: pointer;
  transition: 0.2s;
}

.area-btn.completed {
  background: #dff6e0;
  border-color: #3ea15b;
}

.area-btn:hover {
  background: #f3f8ff;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.modal.hidden {
  display: none;
}

.modal-content {
  background: #fff;
  border-radius: 14px;
  padding: 20px 24px;
  max-width: 600px;
  width: 100%;
  text-align: center;
}

.character-side {
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.character-side img {
  width: 120px;
  height: auto;
  border-radius: 12px;
  background: #f3f8ff;
  padding: 8px;
}

.text-side {
  flex: 1;
}

.options {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 15px;
}

.option-btn {
  background: #eef1f6;
  border: 1px solid transparent;
  padding: 10px 8px;
  border-radius: 8px;
  cursor: pointer;
}

.option-btn.correct {
  background: #dff6e0;
  border-color: #3ea15b;
}

.option-btn.wrong {
  background: #ffd2d2;
  border-color: #d63b3b;
}

.diploma-card canvas {
  width: 100%;
  max-width: 600px;
  border: 1px solid #d3d7dd;
  border-radius: 12px;
  margin: 18px auto;
  display: block;
}

@media (max-width: 600px) {
  .character-side {
    flex-direction: column;
    align-items: center;
  }
  .character-side img {
    width: 100px;
  }
  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }
}