:root {
  --primary-color: #FF6B6B;
  --secondary-color: #4ECDC4;
  --text-color: #2D3436;
  --bg-color: #F7F9FC;
  --card-bg: #FFFFFF;
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
  --radius: 12px;
  --naver-color: #03C75A;
  --youtube-color: #FF0000;
}

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

body {
  font-family: 'Noto Sans KR', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  padding: 20px;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

header {
  margin-bottom: 40px;
  margin-top: 20px;
}

header h1 {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 10px;
}

header p {
  color: #636e72;
}

.category-nav {
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.category-btn {
  background-color: var(--card-bg);
  border: 2px solid transparent;
  padding: 15px 30px;
  font-size: 1.1rem;
  font-weight: 700;
  border-radius: var(--radius);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  color: var(--text-color);
  font-family: inherit;
}

.category-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--secondary-color);
  color: var(--secondary-color);
}

.category-btn:active {
  transform: translateY(0);
}

.result-area {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.result-area.active {
  opacity: 1;
  transform: translateY(0);
}

.card {
  background-color: var(--card-bg);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow-lg);
  text-align: left;
}

.card h2 {
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: 20px;
  border-bottom: 2px solid #eee;
  padding-bottom: 10px;
  text-align: center;
}

.recipe-content h3 {
  margin-top: 20px;
  margin-bottom: 10px;
  color: var(--secondary-color);
}

.recipe-content ul, .recipe-content ol {
  padding-left: 20px;
  margin-bottom: 20px;
}

.recipe-content li {
  margin-bottom: 8px;
}

.search-links {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 2px solid #eee;
  text-align: center;
}

.search-links h3 {
  font-size: 1.1rem;
  color: #636e72;
  margin-bottom: 15px;
}

.link-buttons {
  display: flex;
  justify-content: center;
  gap: 15px;
}

.search-btn {
  display: inline-block;
  padding: 10px 20px;
  text-decoration: none;
  border-radius: 25px;
  font-weight: bold;
  color: white;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.search-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.search-btn.naver {
  background-color: var(--naver-color);
}

.search-btn.youtube {
  background-color: var(--youtube-color);
}

.hidden {
  display: none;
}

@media (max-width: 600px) {
  .category-btn {
    width: 45%;
    padding: 12px;
  }
  
  .card {
    padding: 20px;
  }
}