/* ========================================
   iyouyon 爱游远 - 全局样式
   阶段 2：完整设计落地
   ======================================== */

/* ---------- CSS 变量 ---------- */
:root {
  --color-primary: #2B7B6E;
  --color-primary-hover: #23695E;
  --color-primary-light: #E8F4F1;
  --color-accent: #F4A261;
  --color-accent-hover: #E08F4E;
  --color-bg: #FAFAFA;
  --color-white: #FFFFFF;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-text-lighter: #999999;
  --color-border: #E5E5E5;
  --color-shadow: rgba(0, 0, 0, 0.08);
  --color-shadow-hover: rgba(0, 0, 0, 0.12);
  --color-favorite: #E74C3C;

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
                  "Microsoft YaHei", "Helvetica Neue", sans-serif;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-pill: 999px;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  --nav-height: 64px;
  --nav-height-mobile: 56px;
  --max-width: 1200px;
}

/* ---------- 全局重置 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  font-size: inherit;
}

img { max-width: 100%; display: block; }
ul, ol { list-style: none; }

/* ========================================
   排版体系
   ======================================== */
h1, h2, h3, h4 { line-height: 1.3; }

.page-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-lg);
}

.section-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.text-muted {
  color: var(--color-text-light);
  font-size: 15px;
}

/* ========================================
   导航栏
   ======================================== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  box-shadow: 0 1px 4px var(--color-shadow);
  height: var(--nav-height);
}

.nav__container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.nav__logo-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-primary) 0%, #4DB6AC 100%);
}

.nav__logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  white-space: nowrap;
}

/* 选项卡 */
.nav__tabs {
  display: flex;
  gap: var(--space-xs);
}

.nav__tab {
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-light);
  border-radius: var(--radius-md);
  transition: color 0.2s, background 0.2s;
  white-space: nowrap;
  position: relative;
}

.nav__tab::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: width 0.2s;
}

.nav__tab:hover { color: var(--color-primary); }

.nav__tab--active {
  color: var(--color-primary);
  font-weight: 600;
}

.nav__tab--active::after {
  width: 24px;
}

/* 右侧操作区 */
.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
}

/* 语言切换按钮 */
.nav__lang-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-light);
  font-size: 13px;
  font-weight: 500;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.nav__lang-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.nav__lang-icon { font-size: 14px; }

/* 汉堡菜单按钮 */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: var(--radius-md);
}

.nav__hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

/* 汉堡菜单打开动画 */
.nav__hamburger--open .nav__hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__hamburger--open .nav__hamburger-line:nth-child(2) {
  opacity: 0;
}
.nav__hamburger--open .nav__hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ========================================
   主体内容区
   ======================================== */
.main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
}

/* 页面切换 */
.page { display: none; }
.page--active { display: block; }

/* ========================================
   按钮组件
   ======================================== */

/* 主按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 15px;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
}
.btn:active { transform: scale(0.97); }

.btn--primary {
  background: var(--color-primary);
  color: white;
}
.btn--primary:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 4px 12px rgba(43, 123, 110, 0.3);
}

.btn--accent {
  background: var(--color-accent);
  color: white;
}
.btn--accent:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 4px 12px rgba(244, 162, 97, 0.3);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.btn--outline:hover {
  background: var(--color-primary);
  color: white;
}

.btn--sm {
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 500;
}

/* ========================================
   标签组件
   ======================================== */
.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 500;
  background: var(--color-primary-light);
  color: var(--color-primary);
  white-space: nowrap;
}

.tag--accent {
  background: #FFF3E8;
  color: var(--color-accent);
}

/* ========================================
   卡片组件
   ======================================== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 12px var(--color-shadow);
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
  position: relative;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 20px var(--color-shadow-hover);
}

/* 卡片图片区 */
.card__image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  background: linear-gradient(135deg, #2B7B6E 0%, #4DB6AC 100%);
  transition: transform 0.4s;
  /* 占位：渐变背景，替换为 <img> 时自动覆盖 */
}

/* 图片 hover 微放大 */
.card:hover .card__image {
  transform: scale(1.05);
}

/* 卡片收藏按钮 */
.card__favorite {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: transform 0.2s, background 0.2s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  z-index: 2;
}
.card__favorite:hover { transform: scale(1.15); }
.card__favorite--active {
  background: white;
  /* 爱心填充在 JS 中处理 */
}

/* 卡片内容区 */
.card__body {
  padding: var(--space-md);
}

.card__title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
  line-height: 1.3;
}

.card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.card__meta-item {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  color: var(--color-text-light);
}

.card__meta-icon {
  font-size: 14px;
}

.card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-sm);
}

.card__desc {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ========================================
   Hero 全屏大图 + 搜索框
   ======================================== */
.hero {
  position: relative;
  width: 100vw;
  height: 75vh;
  min-height: 420px;
  max-height: 650px;
  margin-left: calc(-50vw + 50%);
  margin-right: calc(-50vw + 50%);
  margin-bottom: var(--space-2xl);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 全屏背景图 */
.hero__bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 0;
}

/* 暗色遮罩，让文字更清晰 */
.hero::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(
    to bottom,
    rgba(0,0,0,0.25) 0%,
    rgba(0,0,0,0.15) 40%,
    rgba(0,0,0,0.35) 100%
  );
  z-index: 1;
}

/* 内容叠层 */
.hero__overlay {
  position: relative;
  z-index: 2;
  text-align: center;
  color: white;
  padding: var(--space-xl);
  max-width: 650px;
  width: 100%;
}

.hero__title {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.hero__subtitle {
  font-size: 18px;
  opacity: 0.95;
  margin-bottom: var(--space-xl);
  text-shadow: 0 1px 4px rgba(0,0,0,0.3);
}

/* 搜索框 */
.hero__search {
  display: flex;
  align-items: center;
  background: white;
  border-radius: var(--radius-pill);
  padding: 6px 6px 6px 20px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
  position: relative;
  max-width: 520px;
  margin: 0 auto;
}

.hero__search-icon {
  font-size: 18px;
  color: var(--color-text-lighter);
  flex-shrink: 0;
  margin-right: var(--space-sm);
}

.hero__search-input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 16px;
  font-family: inherit;
  color: var(--color-text);
  background: transparent;
  min-width: 0;
}

.hero__search-input::placeholder {
  color: var(--color-text-lighter);
}

.hero__search-btn {
  background: var(--color-accent);
  color: white;
  border: none;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s;
  font-family: inherit;
}

.hero__search-btn:hover {
  background: var(--color-accent-hover);
}

/* 搜索建议下拉 */
.hero__suggestions {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0,0,0,0.15);
  max-height: 320px;
  overflow-y: auto;
  z-index: 10;
  text-align: left;
  padding: var(--space-sm) 0;
}

.hero__suggestions:empty {
  display: none;
}

.suggestion-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: 12px 20px;
  cursor: pointer;
  transition: background 0.15s;
  color: var(--color-text);
}

.suggestion-item:hover {
  background: var(--color-primary-light);
}

.suggestion-item__icon {
  font-size: 24px;
  flex-shrink: 0;
}

.suggestion-item__info {
  flex: 1;
  min-width: 0;
}

.suggestion-item__name {
  font-weight: 600;
  font-size: 15px;
  color: var(--color-text);
}

.suggestion-item__detail {
  font-size: 13px;
  color: var(--color-text-lighter);
  margin-top: 2px;
}

.suggestion-item__arrow {
  font-size: 14px;
  color: var(--color-text-lighter);
  flex-shrink: 0;
}

/* 无搜索结果 */
.suggestion-empty {
  padding: 16px 20px;
  text-align: center;
  color: var(--color-text-lighter);
  font-size: 14px;
}

/* ========================================
   区块通用样式
   ======================================== */
.section {
  margin-bottom: var(--space-2xl);
}

.section__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.section__title {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-text);
}

.section__link {
  font-size: 14px;
  color: var(--color-primary);
  font-weight: 500;
  transition: color 0.2s;
}
.section__link:hover { color: var(--color-primary-hover); }

/* 筛选栏 */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.filter-btn {
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-light);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  transition: all 0.2s;
}

.filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-btn--active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

/* ========================================
   关于我们页面
   ======================================== */
.about {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.about__story .section__title {
  margin-bottom: var(--space-sm);
}

.about__story p {
  margin-bottom: var(--space-md);
  color: var(--color-text-light);
  line-height: 1.7;
}

.about__contact {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: 0 2px 12px var(--color-shadow);
}

.about__contact-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  font-size: 15px;
  color: var(--color-text-light);
}

.contact-item__icon {
  font-size: 18px;
  flex-shrink: 0;
  margin-top: 1px;
}

.contact-item__label {
  font-weight: 500;
  color: var(--color-text);
}

/* ========================================
   我的清单 - 空状态
   ======================================== */
.empty-state {
  display: none; /* 默认隐藏，JS 在无收藏时显示 */
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 12px var(--color-shadow);
}

.empty-state__icon {
  font-size: 64px;
  margin-bottom: var(--space-md);
  opacity: 0.6;
}

.empty-state__title {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.empty-state__desc {
  font-size: 15px;
  color: var(--color-text-lighter);
  margin-bottom: var(--space-lg);
}

/* 清单列表 */
.wishlist-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.wishlist-item {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 12px var(--color-shadow);
  overflow: hidden;
  display: flex;
}

.wishlist-item__image {
  width: 120px;
  min-height: 120px;
  flex-shrink: 0;
  background: linear-gradient(135deg, #2B7B6E 0%, #4DB6AC 100%);
}

.wishlist-item__body {
  padding: var(--space-md);
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.wishlist-item__title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.wishlist-item__type {
  font-size: 12px;
  color: var(--color-text-lighter);
}

.wishlist-item__date {
  font-size: 11px;
  color: var(--color-text-lighter);
}

.wishlist-item__remove {
  align-self: flex-end;
  font-size: 13px;
  color: var(--color-text-lighter);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
}
.wishlist-item__remove:hover {
  color: var(--color-favorite);
  background: #FFF0EF;
}

/* ========================================
   页脚
   ======================================== */
.footer {
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  padding: var(--space-xl) var(--space-lg);
  margin-top: var(--space-3xl);
}

.footer__container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer__name {
  font-weight: 600;
  color: var(--color-primary);
}

.footer__slogan {
  font-size: 13px;
  color: var(--color-text-lighter);
}

.footer__info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-align: center;
}

.footer__copyright {
  font-size: 13px;
  color: var(--color-text-light);
}

.footer__icp {
  font-size: 12px;
  color: var(--color-text-lighter);
  text-decoration: none;
}

.footer__icp:hover {
  text-decoration: underline;
  color: var(--color-text-light);
}

.footer__links {
  display: flex;
  gap: var(--space-md);
}

.footer__links a {
  font-size: 13px;
  color: var(--color-text-light);
  transition: color 0.2s;
}
.footer__links a:hover { color: var(--color-primary); }

/* ========================================
   响应式：手机端 (<768px)
   ======================================== */
@media (max-width: 767px) {
  .nav {
    height: var(--nav-height-mobile);
  }

  .nav__tabs {
    display: none;
    position: absolute;
    top: var(--nav-height-mobile);
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: var(--space-sm);
    box-shadow: 0 4px 12px var(--color-shadow);
    gap: 2px;
  }
  .nav__tabs--open { display: flex; }

  .nav__tab {
    width: 100%;
    text-align: left;
    padding: 12px 16px;
  }

  .nav__hamburger { display: flex; }
  .nav__lang-label { display: none; }
  .nav__lang-btn { padding: 6px 8px; }

  .main { padding: var(--space-md); }

  /* Hero */
  .hero {
    height: 60vh;
    min-height: 360px;
    border-radius: 0;
    margin-left: calc(-1 * var(--space-md));
    margin-right: calc(-1 * var(--space-md));
    width: calc(100% + var(--space-md) * 2);
  }
  .hero__title { font-size: 28px; }
  .hero__subtitle { font-size: 15px; }
  .hero__search {
    padding: 5px 5px 5px 16px;
    margin: 0 var(--space-sm);
  }
  .hero__search-input { font-size: 14px; }
  .hero__search-btn {
    padding: 10px 20px;
    font-size: 14px;
  }

  .page-title { font-size: 22px; }
  .section__title { font-size: 18px; }

  /* 卡片网格 */
  .card-grid { grid-template-columns: 1fr; }

  /* 关于我们 */
  .about { grid-template-columns: 1fr; }

  /* 页脚 */
  .footer__container {
    flex-direction: column;
    text-align: center;
  }
}

/* ========================================
   响应式：平板 (768px-1023px)
   ======================================== */
@media (min-width: 768px) and (max-width: 1023px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .about { grid-template-columns: 1fr 1fr; gap: var(--space-xl); }

  .nav__tab {
    padding: 8px 12px;
    font-size: 14px;
  }
  .nav__logo-text { font-size: 16px; }
}

/* ========================================
   响应式：桌面 (>1024px)
   ======================================== */
@media (min-width: 1024px) {
  .card-grid { grid-template-columns: repeat(3, 1fr); }
}