/* ===================================
   搭子旅行 官网 - 组件样式
   =================================== */

/* ===== 导航栏 ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: all var(--duration-normal) var(--ease-smooth);
}

.navbar--transparent {
  background: transparent;
}

.navbar--transparent .logo {
  color: #FFFFFF;
}

.navbar--solid {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid var(--border-light);
  box-shadow: var(--shadow-xs);
}

.navbar--solid .nav-link {
  color: var(--text-secondary);
}

.navbar--solid .nav-link:hover {
  color: var(--primary);
  background: var(--primary-bg);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 21px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.3px;
  flex-shrink: 0;
}

.logo__img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
}

.logo-text {
  font-size: inherit;
  font-weight: inherit;
  color: inherit;
  letter-spacing: inherit;
}

.logo__icon {
  font-size: 26px;
  line-height: 1;
}

.logo__ver {
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-bg);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  vertical-align: middle;
  margin-left: 2px;
}

/* 导航链接 */
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  padding: 8px 18px;
  font-size: 14.5px;
  font-weight: 600;
  color: rgba(255,255,255,0.85);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-smooth);
  position: relative;
}

.nav-link:hover {
  color: #fff;
  background: rgba(255,255,255,0.12);
}

.nav-link--active {
  color: var(--primary) !important;
  background: var(--primary-bg) !important;
}

.navbar--solid .nav-link--active {
  color: var(--primary) !important;
}

/* 导航按钮 */
.nav-cta {
  padding: 9px 24px;
  font-size: 14px;
  font-weight: 700;
  color: #fff !important;
  background: var(--primary) !important;
  border-radius: var(--radius-full) !important;
  box-shadow: var(--shadow-primary);
  transition: all var(--duration-fast) var(--ease-smooth);
}

.nav-cta:hover {
  background: var(--primary-dark) !important;
  transform: translateY(-1px);
  box-shadow: 0 10px 36px rgba(124, 179, 66, 0.35);
}

/* 汉堡菜单 */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: background var(--duration-fast);
  cursor: pointer;
}

.nav-hamburger:hover {
  background: rgba(255,255,255,0.1);
}

.navbar--solid .nav-hamburger:hover {
  background: var(--bg-muted);
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2.2px;
  background: #fff;
  border-radius: 2px;
  transition: all var(--duration-normal) var(--ease-smooth);
  transform-origin: center;
}

.navbar--solid .nav-hamburger span {
  background: var(--text);
}

.nav-hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5.5px, 5.5px);
}

.nav-hamburger.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav-hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5.5px, -5.5px);
}

/* 移动端导航 */
@media (max-width: 768px) {
  .nav-hamburger {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 16px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-normal) var(--ease-smooth);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-links.open .nav-link {
    color: var(--text-secondary);
  }

  .nav-links.open .nav-link:hover {
    color: var(--primary);
    background: var(--primary-bg);
  }

  .nav-links.open .nav-link--active {
    color: var(--primary) !important;
    background: var(--primary-bg) !important;
  }

  .nav-links.open .nav-cta {
    margin-top: 8px;
    text-align: center;
  }

  .nav-link {
    width: 100%;
    padding: 14px 16px;
    font-size: 15px;
    border-radius: var(--radius-sm);
  }
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  font-size: 15px;
  font-weight: 700;
  border-radius: var(--radius-full);
  transition: all var(--duration-normal) var(--ease-smooth);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.btn--primary {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-primary);
}

.btn--primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(124, 179, 66, 0.4);
}

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

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

.btn--outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-bg);
}

.btn--outline-white {
  border: 2px solid rgba(255,255,255,0.3);
  color: #fff;
  background: transparent;
}

.btn--outline-white:hover {
  border-color: #fff;
  background: rgba(255,255,255,0.1);
}

.btn--ghost {
  color: var(--primary);
  background: transparent;
  padding: 10px 20px;
}

.btn--ghost:hover {
  background: var(--primary-bg);
}

.btn--lg {
  padding: 16px 36px;
  font-size: 16px;
}

.btn--sm {
  padding: 8px 18px;
  font-size: 13px;
}

.btn--icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-sm);
}

/* ===== 卡片 ===== */
.card {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-smooth);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.card__img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: var(--bg-muted);
}

.card__img--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 52px;
}

.card__body {
  padding: 24px;
}

.card__tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 700;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
  letter-spacing: 0.2px;
}

.card__tag--travel { color: var(--accent); background: var(--accent-bg); }
.card__tag--sport { color: var(--purple); background: #EDE7F6; }
.card__tag--food { color: var(--danger); background: #FFEBEE; }
.card__tag--study { color: var(--info); background: #E3F2FD; }
.card__tag--photo { color: var(--warning); background: #FFF8E1; }
.card__tag--movie { color: #EC407A; background: #FCE4EC; }
.card__tag--game { color: #26C6DA; background: #E0F7FA; }
.card__tag--music { color: #AB47BC; background: #F3E5F5; }

.card__title {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 10px;
  color: var(--text);
}

.card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.card__meta-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.card__desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 18px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  border-top: 1px solid var(--border-light);
}

.card__user {
  display: flex;
  align-items: center;
  gap: 10px;
}

.card__avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.card__username {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.card__action {
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  background: var(--primary);
  cursor: pointer;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  transition: all var(--duration-fast) var(--ease-smooth);
  box-shadow: 0 2px 8px rgba(124, 179, 66, 0.25);
}

.card__action:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(124, 179, 66, 0.35);
}

/* 卡片网格 */
.cards-grid--3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.cards-grid--4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

@media (max-width: 1024px) {
  .cards-grid--3,
  .cards-grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .cards-grid--3,
  .cards-grid--4 {
    grid-template-columns: 1fr;
  }
}

/* ===== 筛选栏 ===== */
.filter-bar {
  margin-bottom: 36px;
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.filter-row:last-child {
  margin-bottom: 0;
}

.filter-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-muted);
  margin-right: 4px;
  flex-shrink: 0;
}

.filter-label svg {
  color: var(--primary);
}

.filter-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 20px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--border);
  color: var(--text-secondary);
  background: #fff;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-smooth);
}

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

.filter-tag.active {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-bg);
  box-shadow: 0 2px 8px rgba(124, 179, 66, 0.1);
}

/* 活动类型标签容器 */
.filter-tags-wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  flex: 1;
  min-width: 0;
}

/* 更多/收起按钮 */
.filter-tag--more {
  border-style: dashed;
  color: var(--primary);
  background: var(--primary-bg);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.filter-tag--more:hover {
  border-color: var(--primary);
  border-style: solid;
  background: var(--primary);
  color: #fff;
}

.filter-tag--more svg {
  width: 12px;
  height: 12px;
  transition: transform var(--duration-fast) var(--ease-smooth);
}

.filter-row--expanded .filter-tag--more svg {
  transform: rotate(180deg);
}

/* 活动类型筛选行（带更多/收起的标签容器） */
.filter-row--tags {
  align-items: flex-start;
}

.filter-row--tags .filter-label {
  margin-top: 9px;
}

/* ===== 模态框 ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 15, 35, 0.5);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal) var(--ease-smooth);
  padding: 24px;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: #fff;
  border-radius: var(--radius-xl);
  padding: 36px;
  max-width: 520px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  transform: translateY(24px) scale(0.96);
  transition: all var(--duration-normal) var(--ease-spring);
  box-shadow: var(--shadow-xl);
}

.modal-overlay.active .modal {
  transform: translateY(0) scale(1);
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}

.modal__title {
  font-size: 22px;
  font-weight: 800;
}

.modal__close {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text-muted);
  transition: all var(--duration-fast);
  cursor: pointer;
}

.modal__close:hover {
  background: var(--bg-muted);
  color: var(--text);
}

/* 表单 */
.form-group {
  margin-bottom: 22px;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 13px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text);
  background: #fff;
  transition: all var(--duration-fast) var(--ease-smooth);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-glow);
}

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

.form-textarea {
  resize: vertical;
  min-height: 110px;
  line-height: 1.6;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%239CA3AF' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 44px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 768px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  top: 96px;
  left: 50%;
  transform: translateX(-50%) translateY(-16px);
  background: var(--bg-dark);
  color: #fff;
  padding: 14px 32px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 600;
  z-index: 3000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal) var(--ease-spring);
  box-shadow: var(--shadow-lg);
  white-space: nowrap;
}

.toast.show {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-dark);
  color: #fff;
  padding: 72px 0 36px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 56px;
}

.footer__brand .logo {
  color: #fff;
  margin-bottom: 18px;
}

.footer__brand-text {
  color: rgba(255,255,255,0.5);
  font-size: 14px;
  line-height: 1.8;
  max-width: 300px;
}

.footer__col-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 22px;
  color: rgba(255,255,255,0.9);
}

.footer__col a {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,0.45);
  margin-bottom: 14px;
  transition: all var(--duration-fast) var(--ease-smooth);
}

.footer__col a:hover {
  color: var(--primary-light);
  transform: translateX(3px);
}

.footer__bottom {
  padding-top: 36px;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: rgba(255,255,255,0.3);
}

@media (max-width: 1024px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  .footer__grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer__bottom {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }
}

/* ===== 回到顶部 ===== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: var(--shadow-primary);
  z-index: 900;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: all var(--duration-normal) var(--ease-smooth);
  cursor: pointer;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(124, 179, 66, 0.4);
}

/* 卡片封面图 */
.card--cover .card__cover {
  position: relative;
  width: 100%;
  height: 200px;
  overflow: hidden;
}

.card--cover .card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-smooth);
}

.card--cover:hover .card__cover img {
  transform: scale(1.08);
}

.card__cover-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(transparent, rgba(0,0,0,0.45));
  pointer-events: none;
}

.card__cover-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 700;
  border-radius: var(--radius-full);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 2;
}

.card--cover:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

/* 带SVG图标的头像 */
.card__avatar--icon {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}

.card__avatar--icon svg {
  color: #fff;
}

/* 头像加载失败兜底 */
.card__avatar--fallback {
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
}

/* ===== 空状态 ===== */
.empty-state {
  text-align: center;
  padding: 80px 24px;
  color: var(--text-muted);
}

.empty-state__icon {
  margin-bottom: 16px;
  opacity: 0.3;
  color: var(--primary);
}

.empty-state__text {
  font-size: 16px;
  font-weight: 500;
}

/* ===== 目的地筛选（两行模式：国内/国际） ===== */
.dest-categories {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
  min-width: 0;
}

.dest-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.dest-row__label {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-secondary);
  flex-shrink: 0;
  min-width: 32px;
  padding: 5px 0;
  line-height: 1.4;
}

.dest-row__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.dest-chip {
  padding: 5px 14px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--border);
  color: var(--text-secondary);
  background: #fff;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-smooth);
}

.dest-chip:hover {
  border-color: var(--primary-light);
  color: var(--primary);
}

.dest-chip.active {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-bg);
  box-shadow: 0 2px 8px rgba(124, 179, 66, 0.1);
}

/* 更多/收起按钮 */
.dest-chip--more {
  border-style: dashed;
  color: var(--primary);
  background: var(--primary-bg);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.dest-chip--more:hover {
  border-color: var(--primary);
  border-style: solid;
  background: var(--primary);
  color: #fff;
}

.dest-chip--more svg {
  width: 12px;
  height: 12px;
  transition: transform var(--duration-fast) var(--ease-smooth);
}

.dest-row--expanded .dest-chip--more svg {
  transform: rotate(180deg);
}

/* 目的地筛选行特殊布局 */
.filter-row--dest {
  align-items: flex-start;
}

.filter-row--dest .filter-label {
  margin-top: 9px;
}

@media (max-width: 768px) {
  .filter-row--dest {
    flex-direction: column;
    align-items: flex-start;
  }

  .filter-row--dest .filter-label {
    margin-top: 0;
    margin-bottom: 6px;
  }

  .dest-row {
    gap: 6px;
  }

  .dest-row__chips {
    gap: 5px;
  }
}