/* 智能每日配餐 - 总站样式 */
/* Smart Meal Planner - Main Site Styles */

:root {
  --primary: #e67722;
  --primary-light: #fef5eb;
  --primary-dark: #d35400;
  --secondary: #27ae60;
  --accent: #f39c12;
  --text: #333333;
  --text-light: #666666;
  --text-muted: #999999;
  --bg: #f8f9fa;
  --bg-white: #ffffff;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-hover: 0 4px 20px rgba(0,0,0,0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: all 0.3s ease;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

/* 全局导航 */
.global-nav {
  background: var(--bg-white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 8px;
}

.nav-links a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  color: var(--text);
  text-decoration: none;
  font-size: 0.875rem;
  transition: var(--transition);
  white-space: nowrap;
}

.nav-links a:hover {
  background: var(--primary-light);
  color: var(--primary);
}

.nav-links a.active {
  background: var(--primary);
  color: white;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text);
}

/* 主容器 */
.main-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 20px;
}

/* Hero区 */
.hero-section {
  text-align: center;
  margin-bottom: 40px;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-light);
  margin-bottom: 4px;
}

.hero-subtitle-en {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* 输入区 */
.input-section {
  margin-bottom: 40px;
}

.input-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
}

.section-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 24px;
  color: var(--text);
}

.input-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 24px;
}

.input-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.input-item label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
}

.label-icon {
  font-size: 1.25rem;
}

.label-text {
  font-size: 1rem;
}

.label-en {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 400;
}

.styled-select {
  padding: 12px 16px;
  border: 2px solid #e0e0e0;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  background: var(--bg-white);
  cursor: pointer;
  transition: var(--transition);
}

.styled-select:focus {
  outline: none;
  border-color: var(--primary);
}

/* 选项组 */
.options-group {
  margin-bottom: 24px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 0.9375rem;
}

.checkbox-label input {
  display: none;
}

.checkmark {
  width: 20px;
  height: 20px;
  border: 2px solid #ddd;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.checkbox-label input:checked + .checkmark {
  background: var(--primary);
  border-color: var(--primary);
}

.checkbox-label input:checked + .checkmark::after {
  content: '✓';
  color: white;
  font-size: 12px;
}

/* 按钮 */
.btn-primary, .btn-success, .btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  width: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(230, 119, 34, 0.4);
}

.btn-success {
  background: var(--secondary);
  color: white;
}

.btn-success:hover {
  background: #229954;
  transform: translateY(-2px);
}

.btn-secondary {
  background: #ecf0f1;
  color: var(--text);
}

.btn-secondary:hover {
  background: #d5dbdb;
}

.btn-icon {
  font-size: 1.125rem;
}

.btn-en {
  font-size: 0.75rem;
  opacity: 0.8;
}

/* 结果区 */
.result-section {
  margin-bottom: 40px;
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.meal-stats {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.stat-item {
  background: var(--primary-light);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.875rem;
  color: var(--primary-dark);
}

.meal-container {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.meal-category {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.category-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary-light);
}

.category-icon {
  font-size: 1.5rem;
}

.category-en {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 400;
  margin-left: auto;
}

/* 菜谱卡片网格 */
.recipe-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.recipe-card {
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 20px;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  position: relative;
}

.recipe-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
}

.recipe-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.recipe-name {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.recipe-name-en {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.recipe-meta {
  display: flex;
  gap: 12px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.recipe-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.recipe-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.tag {
  font-size: 0.6875rem;
  padding: 4px 8px;
  background: var(--primary-light);
  color: var(--primary-dark);
  border-radius: 12px;
}

.tag.spicy {
  background: #ffebee;
  color: #c62828;
}

.tag.healthy {
  background: #e8f5e9;
  color: #2e7d32;
}

.tag.quick {
  background: #e3f2fd;
  color: #1565c0;
}

/* 换菜按钮 */
.change-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: none;
  background: var(--bg-white);
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  opacity: 0;
  transition: var(--transition);
}

.recipe-card:hover .change-btn {
  opacity: 1;
}

.change-btn:hover {
  background: var(--primary);
  color: white;
}

/* 操作按钮 */
.action-buttons {
  display: flex;
  gap: 16px;
  margin-top: 32px;
}

.action-buttons button {
  flex: 1;
}

/* 特色站点区 */
.features-section {
  margin-bottom: 40px;
}

.features-section .section-title {
  text-align: center;
  margin-bottom: 32px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 24px 16px;
  text-align: center;
  text-decoration: none;
  color: var(--text);
  box-shadow: var(--shadow);
  transition: var(--transition);
  border-top: 4px solid transparent;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.feature-card.chinese { border-top-color: #c41e3a; }
.feature-card.american { border-top-color: #2c3e50; }
.feature-card.kids { border-top-color: #ff9a9e; }
.feature-card.fitness { border-top-color: #4ecca3; }
.feature-card.quick { border-top-color: #3498db; }
.feature-card.party { border-top-color: #c9a227; }

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* 页脚 */
.site-footer {
  background: var(--text);
  color: #aaa;
  padding: 40px 20px;
  text-align: center;
}

.footer-content {
  max-width: 900px;
  margin: 0 auto;
}

.footer-content p {
  margin-bottom: 12px;
}

.footer-links a {
  color: #ddd;
  text-decoration: none;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--primary);
}

.divider {
  margin: 0 12px;
  color: #666;
}

.copyright {
  font-size: 0.8125rem;
  color: #666;
  margin-top: 20px;
}

/* 弹窗 */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.6);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: var(--bg-white);
  border-radius: var(--radius);
  max-width: 600px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  position: relative;
  animation: modalSlideIn 0.3s ease;
}

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

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: var(--bg);
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  z-index: 10;
}

.modal-close:hover {
  background: #e0e0e0;
}

.modal-body {
  padding: 32px;
}

.modal-header {
  margin-bottom: 24px;
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.modal-title-en {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.modal-meta {
  display: flex;
  gap: 16px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  color: var(--text-light);
}

.modal-section {
  margin-bottom: 24px;
}

.modal-section-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.ingredients-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.ingredient-item {
  background: var(--primary-light);
  padding: 8px 14px;
  border-radius: 20px;
  font-size: 0.875rem;
}

.steps-list {
  counter-reset: step;
}

.step-item {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid #eee;
}

.step-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.875rem;
  flex-shrink: 0;
}

.step-content {
  flex: 1;
  padding-top: 4px;
}

/* 响应式 */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg-white);
    flex-direction: column;
    padding: 16px;
    box-shadow: var(--shadow);
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .nav-toggle {
    display: block;
  }
  
  .hero-title {
    font-size: 1.875rem;
  }
  
  .input-group {
    grid-template-columns: 1fr;
  }
  
  .recipe-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .action-buttons {
    flex-direction: column;
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .result-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .recipe-grid {
    grid-template-columns: 1fr;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .input-card {
    padding: 20px;
  }
}

/* 动画 */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.4s ease forwards;
}

/* 加载动画 */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}