/* CSS 변수 정의 */
:root {
  --bg-color: #f5f5f5;
  --text-color: #333333;
  --card-bg: #ffffff;
  --btn-bg: #ff6b6b;
  --btn-text: #ffffff;
  --btn-hover: #ee5a5a;
  --btn-secondary-bg: #4ecdc4;
  --btn-secondary-hover: #45b7aa;
  --toggle-bg: #e0e0e0;
  --toggle-circle: #ffffff;
  --shadow: rgba(0, 0, 0, 0.1);
  --border-color: #e0e0e0;
}

/* 다크모드 변수 */
[data-theme="dark"] {
  --bg-color: #1a1a2e;
  --text-color: #eaeaea;
  --card-bg: #16213e;
  --btn-bg: #ff6b6b;
  --btn-text: #ffffff;
  --btn-hover: #ee5a5a;
  --btn-secondary-bg: #4ecdc4;
  --btn-secondary-hover: #45b7aa;
  --toggle-bg: #4a4a6a;
  --toggle-circle: #1a1a2e;
  --shadow: rgba(0, 0, 0, 0.3);
  --border-color: #2a2a4e;
}

/* 기본 스타일 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  transition: background-color 0.3s ease, color 0.3s ease;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  min-height: 100vh;
  padding: 20px;
}

/* 컨테이너 */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 20px;
  text-align: center;
}

/* 테마 토글 컨테이너 */
.theme-toggle-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 100;
}

/* 테마 토글 버튼 */
.theme-toggle {
  width: 60px;
  height: 30px;
  background-color: var(--toggle-bg);
  border-radius: 15px;
  border: none;
  cursor: pointer;
  position: relative;
  outline: none;
  box-shadow: 0 2px 5px var(--shadow);
}

.theme-toggle::before {
  content: '';
  position: absolute;
  width: 24px;
  height: 24px;
  background-color: var(--toggle-circle);
  border-radius: 50%;
  top: 3px;
  left: 3px;
  transition: transform 0.3s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .theme-toggle::before {
  transform: translateX(30px);
  background-color: #ffd700;
}

/* 아이콘 표시 */
.theme-toggle .icon {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
}

.theme-toggle .sun {
  left: 8px;
}

.theme-toggle .moon {
  right: 8px;
}

/* 헤딩 스타일 */
h1 {
  font-size: 2.5rem;
  margin-bottom: 10px;
  color: var(--text-color);
}

.subtitle {
  font-size: 1.1rem;
  opacity: 0.8;
  margin-bottom: 40px;
}

/* 식사 선택 버튼 */
.meal-select {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 30px;
}

.meal-btn {
  padding: 15px 40px;
  font-size: 1.2rem;
  font-weight: 600;
  background-color: var(--card-bg);
  color: var(--text-color);
  border: 2px solid var(--border-color);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.meal-btn:hover {
  border-color: var(--btn-bg);
  transform: translateY(-2px);
}

.meal-btn.active {
  background-color: var(--btn-bg);
  color: var(--btn-text);
  border-color: var(--btn-bg);
}

/* 추천 버튼 */
.recommend-btn {
  padding: 15px 50px;
  font-size: 1.2rem;
  font-weight: 600;
  background-color: var(--btn-secondary-bg);
  color: var(--btn-text);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-bottom: 40px;
}

.recommend-btn:hover:not(:disabled) {
  background-color: var(--btn-secondary-hover);
  transform: translateY(-2px);
}

.recommend-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* 음식 그리드 */
.food-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
  margin-bottom: 30px;
}

/* 음식 카드 */
.food-card {
  background-color: var(--card-bg);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 15px var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  animation: fadeInUp 0.5s ease forwards;
  opacity: 0;
}

.food-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px var(--shadow);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.food-image {
  width: 100%;
  height: 180px;
  overflow: hidden;
}

.food-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.food-card:hover .food-image img {
  transform: scale(1.05);
}

.food-info {
  padding: 20px;
  text-align: left;
}

.food-info h3 {
  font-size: 1.3rem;
  margin-bottom: 8px;
  color: var(--text-color);
}

.food-info p {
  font-size: 0.95rem;
  opacity: 0.8;
  line-height: 1.5;
}

/* 댓글 섹션 */
.comments-section {
  max-width: 800px;
  margin: 60px auto 0;
  padding: 40px 20px;
  text-align: center;
  border-top: 1px solid var(--border-color);
}

.comments-section h2 {
  font-size: 1.8rem;
  margin-bottom: 10px;
  color: var(--text-color);
}

.comments-subtitle {
  font-size: 1rem;
  opacity: 0.8;
  margin-bottom: 30px;
}

#disqus_thread {
  text-align: left;
}

/* 비즈니스 제휴 문의 섹션 */
.contact-section {
  max-width: 600px;
  margin: 60px auto 0;
  padding: 40px 20px;
  text-align: center;
  border-top: 1px solid var(--border-color);
}

.contact-section h2 {
  font-size: 1.8rem;
  margin-bottom: 10px;
  color: var(--text-color);
}

.contact-subtitle {
  font-size: 1rem;
  opacity: 0.8;
  margin-bottom: 30px;
}

.contact-form {
  text-align: left;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-color);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 1rem;
  font-family: inherit;
  background-color: var(--card-bg);
  color: var(--text-color);
  border: 2px solid var(--border-color);
  border-radius: 10px;
  outline: none;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--btn-secondary-bg);
  box-shadow: 0 0 0 3px rgba(78, 205, 196, 0.2);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-color);
  opacity: 0.5;
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.submit-btn {
  width: 100%;
  padding: 15px;
  font-size: 1.1rem;
  font-weight: 600;
  background-color: var(--btn-bg);
  color: var(--btn-text);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.submit-btn:hover {
  background-color: var(--btn-hover);
  transform: translateY(-2px);
}

/* 반응형 디자인 */
@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }

  .meal-select {
    flex-direction: column;
    align-items: center;
  }

  .meal-btn {
    width: 200px;
  }

  .food-grid {
    grid-template-columns: 1fr;
  }

  .contact-section {
    margin-top: 40px;
    padding: 30px 15px;
  }

  .contact-section h2 {
    font-size: 1.5rem;
  }
}