/* ========================================
   萌小院攻略站 - 主样式表
   设计基准：375px手机竖版，max-width 480px
   配色：嫩绿(#66BB6A) + 暖黄(#FFD54F)
   ======================================== */

/* ===== CSS变量 ===== */
:root {
  /* 主色调 */
  --primary-green: #66BB6A;
  --primary-green-dark: #43A047;
  --primary-yellow: #FFD54F;
  --primary-yellow-dark: #FFC107;
  
  /* 辅助色 */
  --bg-color: #F5F8F0;
  --card-bg: #FFFFFF;
  --text-primary: #333333;
  --text-secondary: #666666;
  --text-light: #999999;
  --border-color: #E8E8E8;
  
  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.1);
  
  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  
  /* 间距 */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-lg: 16px;
  --spacing-xl: 20px;
  --spacing-xxl: 24px;
  
  /* 导航高度 */
  --header-height: 56px;
  --nav-height: 60px;
}

/* ===== 基础重置 ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  padding-top: var(--header-height);
  padding-bottom: var(--nav-height);
}

/* ===== 容器 ===== */
.container {
  max-width: 480px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* ===== 头部导航 ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-green-dark) 100%);
  box-shadow: var(--shadow-md);
  z-index: 1000;
}

.header__content {
  max-width: 480px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  padding: 0 var(--spacing-lg);
}

.header__back {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.2s;
}

.header__back:hover {
  background: rgba(255, 255, 255, 0.3);
}

.header__back-icon {
  width: 20px;
  height: 20px;
  stroke: white;
  stroke-width: 2.5;
  fill: none;
}

.header__title {
  flex: 1;
  text-align: center;
  font-size: 1.125rem;
  font-weight: 600;
  color: white;
  margin-right: 32px;
}

/* ===== 底部导航 ===== */
.nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--card-bg);
  box-shadow: 0 -2px 16px rgba(0, 0, 0, 0.06);
  z-index: 1000;
}

.nav__content {
  max-width: 480px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-around;
}

.nav__item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xs) 0;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  color: var(--text-light);
}

.nav__item--active {
  color: var(--primary-green);
}

.nav__item-icon {
  width: 24px;
  height: 24px;
  margin-bottom: 2px;
}

.nav__item-label {
  font-size: 0.6875rem;
  font-weight: 500;
}

/* ===== 搜索框 ===== */
.search {
  margin: var(--spacing-lg) 0;
}

.search__input {
  width: 100%;
  height: 48px;
  padding: 0 var(--spacing-lg) 0 44px;
  border: none;
  border-radius: var(--radius-lg);
  background: var(--card-bg);
  box-shadow: var(--shadow-sm);
  font-size: 0.9375rem;
  color: var(--text-primary);
  outline: none;
  transition: box-shadow 0.2s;
}

.search__input:focus {
  box-shadow: var(--shadow-md);
}

.search__input::placeholder {
  color: var(--text-light);
}

.search__wrapper {
  position: relative;
}

.search__icon {
  position: absolute;
  left: var(--spacing-lg);
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  stroke: var(--text-light);
  stroke-width: 2;
  fill: none;
}

/* ===== 卡片组件 ===== */
.card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow 0.2s, transform 0.2s;
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card--clickable {
  cursor: pointer;
}

.card--clickable:active {
  transform: scale(0.98);
}

.card__body {
  padding: var(--spacing-lg);
}

.card__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.card__desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ===== 分类入口网格 ===== */
.category-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  margin: var(--spacing-lg) 0;
}

.category-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-lg);
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  display: block;
}

.category-card:active {
  transform: scale(0.96);
}

.category-card__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--spacing-sm);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.category-card__icon--green {
  background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
}

.category-card__icon--yellow {
  background: linear-gradient(135deg, #FFF8E1 0%, #FFECB3 100%);
}

.category-card__icon--orange {
  background: linear-gradient(135deg, #FFF3E0 0%, #FFE0B2 100%);
}

.category-card__icon--pink {
  background: linear-gradient(135deg, #FCE4EC 0%, #F8BBD9 100%);
}

.category-card__icon svg {
  width: 24px;
  height: 24px;
}

.category-card__title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.category-card__subtitle {
  font-size: 0.75rem;
  color: var(--text-light);
}

/* ===== 热门精灵 ===== */
.section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: var(--spacing-xl) 0 var(--spacing-lg);
}

.section-title__text {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-primary);
}

.section-title__more {
  font-size: 0.8125rem;
  color: var(--primary-green);
  text-decoration: none;
}

.sprite-scroll {
  display: flex;
  gap: var(--spacing-md);
  overflow-x: auto;
  padding-bottom: var(--spacing-sm);
  margin: 0 -16px;
  padding-left: 16px;
  padding-right: 16px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.sprite-scroll::-webkit-scrollbar {
  display: none;
}

.sprite-card {
  flex-shrink: 0;
  width: 140px;
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  cursor: pointer;
  transition: all 0.2s;
}

.sprite-card:active {
  transform: scale(0.96);
}

.sprite-card__header {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
}

.sprite-card__emoji {
  font-size: 2.5rem;
}

.sprite-card__body {
  padding: var(--spacing-md);
}

.sprite-card__name {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.sprite-card__tag {
  display: inline-block;
  padding: 2px 6px;
  background: var(--primary-yellow);
  color: #8B4513;
  font-size: 0.6875rem;
  border-radius: 4px;
  font-weight: 500;
}

/* ===== 免责声明 ===== */
.disclaimer {
  margin: var(--spacing-xxl) 0;
  padding: var(--spacing-lg);
  background: linear-gradient(135deg, #FFF8E1 0%, #FFECB3 100%);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--primary-yellow-dark);
}

.disclaimer__title {
  font-size: 0.875rem;
  font-weight: 600;
  color: #8B4513;
  margin-bottom: var(--spacing-sm);
}

.disclaimer__text {
  font-size: 0.75rem;
  color: #A0522D;
  line-height: 1.6;
}

/* ===== 手风琴折叠 ===== */
.accordion {
  margin: var(--spacing-lg) 0;
}

.accordion__item {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
}

.accordion__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  cursor: pointer;
  transition: background 0.2s;
}

.accordion__header:active {
  background: #F9F9F9;
}

.accordion__title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.accordion__icon {
  width: 24px;
  height: 24px;
  transition: transform 0.3s;
}

.accordion__item--open .accordion__icon {
  transform: rotate(180deg);
}

.accordion__content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}

.accordion__item--open .accordion__content {
  max-height: 2000px;
}

.accordion__body {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
}

/* ===== 内容样式 ===== */
.content-text {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
}

.content-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: var(--spacing-md) 0 var(--spacing-sm);
}

.content-list {
  padding-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.content-list li {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
  line-height: 1.6;
}

/* ===== 表格样式 ===== */
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-md) 0;
  font-size: 0.8125rem;
}

.data-table th,
.data-table td {
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.data-table th {
  background: #F8FAF5;
  font-weight: 600;
  color: var(--text-primary);
}

.data-table td {
  color: var(--text-secondary);
}

.data-table tr:last-child td {
  border-bottom: none;
}

/* ===== 精灵筛选Tab ===== */
.filter-tabs {
  display: flex;
  gap: var(--spacing-sm);
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-sm);
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.filter-tab {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: center;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s;
}

.filter-tab--active {
  background: var(--primary-green);
  color: white;
}

/* ===== 精灵网格 ===== */
.sprite-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  margin: var(--spacing-lg) 0;
}

.sprite-grid-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  cursor: pointer;
  transition: all 0.2s;
}

.sprite-grid-card:active {
  transform: scale(0.96);
}

.sprite-grid-card__header {
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
}

.sprite-grid-card__emoji {
  font-size: 3rem;
}

.sprite-grid-card__body {
  padding: var(--spacing-md);
}

.sprite-grid-card__name {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.sprite-grid-card__info {
  font-size: 0.75rem;
  color: var(--text-light);
}

.sprite-grid-card__stars {
  color: var(--primary-yellow-dark);
  font-size: 0.75rem;
  margin-top: 2px;
}

.sprite-grid-card__img {
  width: 60px;
  height: 60px;
  object-fit: contain;
  border-radius: 8px;
}

.sprite-detail__img {
  width: 80px;
  height: 80px;
  object-fit: contain;
  border-radius: 12px;
}

/* ===== 精灵详情页 ===== */
.sprite-detail {
  padding: var(--spacing-lg) 0;
}

.sprite-detail__header {
  text-align: center;
  padding: var(--spacing-xxl) 0;
  background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
  border-radius: var(--radius-xl);
  margin-bottom: var(--spacing-lg);
}

.sprite-detail__emoji {
  font-size: 5rem;
  margin-bottom: var(--spacing-md);
}

.sprite-detail__name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.sprite-detail__tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--primary-yellow);
  color: #8B4513;
  font-size: 0.8125rem;
  border-radius: 20px;
  font-weight: 500;
}

.sprite-detail__section {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.sprite-detail__section-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.sprite-detail__section-title::before {
  content: '';
  width: 4px;
  height: 16px;
  background: var(--primary-green);
  border-radius: 2px;
}

.sprite-detail__info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.sprite-detail__info-item {
  text-align: center;
  padding: var(--spacing-md);
  background: #F8FAF5;
  border-radius: var(--radius-md);
}

.sprite-detail__info-label {
  font-size: 0.75rem;
  color: var(--text-light);
  margin-bottom: 4px;
}

.sprite-detail__info-value {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* ===== 回到顶部按钮 ===== */
.back-to-top {
  position: fixed;
  right: 20px;
  bottom: calc(var(--nav-height) + 20px);
  width: 44px;
  height: 44px;
  background: var(--card-bg);
  border-radius: 50%;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
  z-index: 999;
}

.back-to-top--visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:active {
  transform: scale(0.9);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
  stroke: var(--primary-green);
  stroke-width: 2.5;
  fill: none;
}

/* ===== 轮播图 ===== */
.carousel {
  position: relative;
  margin: var(--spacing-lg) 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.carousel__track {
  display: flex;
  transition: transform 0.5s ease;
}

.carousel__slide {
  flex-shrink: 0;
  width: 100%;
}

.carousel__slide img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}

.carousel__indicators {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
}

.carousel__indicator {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: all 0.2s;
}

.carousel__indicator--active {
  background: white;
  width: 18px;
  border-radius: 3px;
}

/* ===== 提示框 ===== */
.tip-box {
  padding: var(--spacing-md) var(--spacing-lg);
  background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
  border-radius: var(--radius-md);
  border-left: 4px solid #2196F3;
  margin: var(--spacing-md) 0;
}

.tip-box--warning {
  background: linear-gradient(135deg, #FFF8E1 0%, #FFECB3 100%);
  border-left-color: var(--primary-yellow-dark);
}

.tip-box--success {
  background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
  border-left-color: var(--primary-green);
}

.tip-box__text {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== 代码块 ===== */
.code-block {
  background: #2D3748;
  color: #E2E8F0;
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 0.8125rem;
  line-height: 1.6;
  overflow-x: auto;
  margin: var(--spacing-md) 0;
}

/* ===== 页面间距 ===== */
.page-content {
  padding: var(--spacing-lg) 0;
}

/* ===== 高亮文本 ===== */
.highlight {
  color: var(--primary-green);
  font-weight: 600;
}

.highlight--yellow {
  color: var(--primary-yellow-dark);
  font-weight: 600;
}

/* ===== 关于页 ===== */
.about-section {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.about-section__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.about-section__content {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.about-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.about-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  background: #F8FAF5;
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-primary);
  transition: background 0.2s;
}

.about-link:active {
  background: #F0F4E8;
}

.about-link__text {
  font-size: 0.875rem;
}

.about-link__arrow {
  color: var(--text-light);
}

/* ===== 冷知识卡片 ===== */
.tip-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.tip-card__header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.tip-card__icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary-yellow) 0%, var(--primary-yellow-dark) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.tip-card__title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
}

.tip-card__content {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ===== 响应式调整 ===== */
@media (max-width: 375px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .sprite-grid {
    gap: var(--spacing-sm);
  }
  
  .category-grid {
    gap: var(--spacing-sm);
  }
}