@font-face {
  font-family: 'KoreanKPNBR';
  src: url('../font/KoreanKPNBR.otf') format('opentype');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'KoreanKPNBR', sans-serif;
}

body, html {
  height: 100%;
  width: 100%;
  background: #D1E1EB;
  position: relative;
  overflow-x: hidden;
  overflow-y: auto;
  margin: 0;
  padding: 0;
}

/* Navigation Links */
.nav-links {
  position: absolute;
  top: 20px;
  right: 30px;
  display: flex;
  gap: 20px;
  z-index: 10;
}

.nav-link {
  color: #FFFFFF;
  text-decoration: none;
  font-size: 18px;
  font-weight: 400;
  transition: opacity 0.3s;
}

.nav-link:hover {
  opacity: 0.7;
}

/* Main Container */
.container {
  width: 100%;
  min-height: 100vh;
  padding: 100px 50px 50px;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

/* Page Title */
.page-title {
  font-size: 64px;
  font-weight: bold;
  color: #FFD700;
  text-align: center;
  margin-bottom: 60px;
  text-transform: uppercase;
  letter-spacing: 2px;
}

/* Story Section */
.story-section {
  width: 100%;
  max-width: 800px;
  margin-bottom: 80px;
  text-align: center;
}

.section-title {
  font-size: 36px;
  color: #FF69B4;
  margin-bottom: 30px;
  text-transform: uppercase;
}

.story-text {
  font-size: 20px;
  color: #2A0000;
  line-height: 1.8;
  margin-bottom: 20px;
  text-align: left;
}

/* Characters Section */
.characters-section {
  width: 100%;
  margin-bottom: 60px;
}

.characters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  margin-top: 30px;
}

.level-1 {
  grid-template-columns: repeat(4, 1fr);
}

.level-2 {
  grid-template-columns: repeat(4, 1fr);
}

.level-3 {
  grid-template-columns: repeat(4, 1fr);
}

.level-4 {
  grid-template-columns: repeat(4, 1fr);
}

.level-4 .character-card {
  padding: 20px;
}

.level-4 .character-name {
  font-size: 20px;
  margin-bottom: 0;
}

.character-card {
  background: #FFF7CC;
  border-radius: 20px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s, box-shadow 0.3s;
}

.character-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.level-section {
  margin-bottom: 60px;
}

.level-title {
  font-size: 28px;
  color: #FF69B4;
  margin-bottom: 30px;
  text-align: center;
  text-transform: uppercase;
}

.character-image {
  width: 150px;
  height: 150px;
  margin: 0 auto 20px;
  object-fit: contain;
  display: block;
}

.character-name {
  font-size: 28px;
  color: #2A0000;
  margin-bottom: 15px;
  font-weight: bold;
}

.character-desc {
  font-size: 16px;
  color: #2A0000;
  line-height: 1.6;
}

.level-2 .character-card,
.level-3 .character-card {
  padding: 20px;
}

.level-2 .character-name,
.level-3 .character-name {
  font-size: 20px;
  margin-bottom: 0;
}

/* Play Button */
.play-button {
  background-color: #FFB6C1;
  color: #FF1493;
  padding: 15px 40px;
  border-radius: 15px;
  text-decoration: none;
  font-size: 24px;
  font-weight: 500;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  transition: transform 0.2s, box-shadow 0.2s;
  margin-top: 20px;
}

.play-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
}

/* Responsive Design */
@media screen and (max-width: 768px) {
  .page-title {
    font-size: 48px;
  }
  
  .section-title {
    font-size: 28px;
  }
  
  .story-text {
    font-size: 18px;
  }
  
  .characters-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
  }
  
  .character-image {
    width: 120px;
    height: 120px;
  }
}

@media screen and (max-width: 480px) {
  .container {
    padding: 80px 20px 30px;
  }
  
  .page-title {
    font-size: 36px;
  }
  
  .characters-grid {
    grid-template-columns: 1fr;
  }
}

/* Fade animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.fade-in {
  animation: fadeIn 0.5s ease-in;
}