/* 双版本对比 — 切换栏与浮动按钮 */

.version-bar {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1100;
  width: min(860px, calc(100vw - 32px));
  animation: versionBarIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.5s both;
  transition: left 0.35s ease, right 0.35s ease, transform 0.35s ease, width 0.35s ease;
}

.version-bar--collapsed {
  left: auto;
  right: 20px;
  transform: none;
  width: auto;
  animation: none;
}

@keyframes versionBarIn {
  from { opacity: 0; transform: translateX(-50%) translateY(20px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

.version-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 12px 12px 12px;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(0, 120, 193, 0.15);
  border-radius: 100px;
  box-shadow: 0 8px 40px rgba(0, 60, 120, 0.18);
  transition: padding 0.35s ease, background 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease, border-radius 0.35s ease;
}

.version-bar__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(0, 120, 193, 0.2);
  background: rgba(0, 120, 193, 0.06);
  color: #0078C1;
  cursor: pointer;
  transition: 0.3s ease;
}

.version-bar__toggle:hover {
  background: rgba(0, 120, 193, 0.12);
  border-color: rgba(0, 120, 193, 0.35);
  transform: translateY(-1px);
}

.version-bar__toggle svg {
  width: 18px;
  height: 18px;
}

.version-bar--collapsed .version-bar__inner {
  padding: 0;
  gap: 0;
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-color: transparent;
  box-shadow: none;
  border-radius: 0;
}

.version-bar--collapsed .version-bar__info,
.version-bar--collapsed .version-bar__actions {
  display: none;
}

.version-bar--collapsed .version-bar__toggle {
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(0, 120, 193, 0.2);
  box-shadow: 0 6px 28px rgba(0, 60, 120, 0.22);
}

.version-bar--collapsed .version-bar__toggle svg {
  width: 20px;
  height: 20px;
}

.version-bar--future.version-bar--collapsed .version-bar__toggle {
  background: rgba(10, 18, 36, 0.92);
  border-color: rgba(0, 229, 255, 0.3);
  color: #00e5ff;
  box-shadow: 0 6px 28px rgba(0, 0, 0, 0.45), 0 0 20px rgba(0, 229, 255, 0.12);
}

.version-bar__info {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: #5C6B7A;
  white-space: nowrap;
}

.version-bar__info strong {
  color: #0078C1;
  font-weight: 700;
}

.version-bar__tag {
  padding: 4px 10px;
  background: rgba(0, 120, 193, 0.08);
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #0078C1;
}

.version-bar__actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

.version-bar__btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 100px;
  transition: 0.3s ease;
  white-space: nowrap;
}

.version-bar__btn--future {
  background: linear-gradient(135deg, #0a1628 0%, #0d2847 100%);
  color: #00e5ff;
  border: 1px solid rgba(0, 229, 255, 0.35);
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.15);
}

.version-bar__btn--future:hover {
  background: linear-gradient(135deg, #0d2847 0%, #123d6e 100%);
  box-shadow: 0 0 28px rgba(0, 229, 255, 0.3);
  transform: translateY(-1px);
}

.version-bar__btn--classic {
  background: linear-gradient(180deg, #00A0E9 0%, #005BAC 100%);
  color: #fff;
  box-shadow: 0 4px 16px rgba(0, 91, 172, 0.25);
}

.version-bar__btn--classic:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(0, 120, 193, 0.35);
}

.version-bar__btn--classic2 {
  background: #fff;
  color: #0078C1;
  border: 1px solid rgba(0, 120, 193, 0.35);
  box-shadow: 0 2px 10px rgba(0, 91, 172, 0.1);
}

.version-bar__btn--classic2:hover {
  background: rgba(0, 120, 193, 0.06);
  transform: translateY(-1px);
}

.version-bar__btn--classic3 {
  background: linear-gradient(180deg, #EF4A54 0%, #A91520 100%);
  color: #fff;
  box-shadow: 0 4px 16px rgba(217, 35, 46, 0.28);
}

.version-bar__btn--classic3:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(217, 35, 46, 0.38);
}

.version-bar__btn--duanwu {
  background: linear-gradient(135deg, #52B788 0%, #2D6A4F 55%, #1B4332 100%);
  color: #fff;
  box-shadow: 0 4px 16px rgba(45, 106, 79, 0.28);
}

.version-bar__btn--duanwu:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(45, 106, 79, 0.38);
}

.version-bar__btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* 科技版底部栏深色适配 */
.version-bar--future .version-bar__inner {
  background: rgba(10, 18, 36, 0.92);
  border-color: rgba(0, 229, 255, 0.2);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5), 0 0 30px rgba(0, 229, 255, 0.08);
}

.version-bar--future .version-bar__info {
  color: rgba(255, 255, 255, 0.6);
}

.version-bar--future .version-bar__info strong {
  color: #00e5ff;
}

.version-bar--future .version-bar__tag {
  background: rgba(0, 229, 255, 0.1);
  color: #00e5ff;
}

.version-bar--future .version-bar__toggle {
  border-color: rgba(0, 229, 255, 0.25);
  background: rgba(0, 229, 255, 0.08);
  color: #00e5ff;
}

.version-bar--future .version-bar__toggle:hover {
  background: rgba(0, 229, 255, 0.15);
  border-color: rgba(0, 229, 255, 0.4);
}

/* 页头快捷切换 */
.version-nav-switch {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 7px 14px !important;
  margin-left: 4px;
  font-size: 0.8rem !important;
  font-weight: 600 !important;
  border-radius: 100px !important;
  border: 1px solid rgba(0, 229, 255, 0.3) !important;
  background: rgba(0, 229, 255, 0.06) !important;
  color: #0078C1 !important;
  white-space: nowrap;
}

.version-nav-switch:hover {
  background: rgba(0, 229, 255, 0.12) !important;
  border-color: rgba(0, 229, 255, 0.5) !important;
}

.site-header.on-hero .version-nav-switch {
  color: #fff !important;
  border-color: rgba(255, 255, 255, 0.3) !important;
  background: rgba(255, 255, 255, 0.08) !important;
}

.theme-future .version-nav-switch {
  color: #00e5ff !important;
  border-color: rgba(0, 229, 255, 0.35) !important;
  background: rgba(0, 229, 255, 0.08) !important;
}

.theme-future .site-header.on-hero .version-nav-switch {
  color: #00e5ff !important;
}

.theme-future .version-nav-switch--classic {
  border-color: rgba(0, 160, 233, 0.35) !important;
  color: #7ec8e8 !important;
}

.version-nav-switch--classic2 {
  border-color: rgba(0, 120, 193, 0.35) !important;
  background: rgba(0, 120, 193, 0.08) !important;
  color: #0078C1 !important;
}

.version-nav-switch--classic2:hover {
  background: rgba(0, 120, 193, 0.14) !important;
  border-color: rgba(0, 120, 193, 0.5) !important;
}

.site-header.on-hero .version-nav-switch--classic2 {
  color: #fff !important;
  border-color: rgba(255, 255, 255, 0.35) !important;
  background: rgba(255, 255, 255, 0.1) !important;
}

.nav-mobile a.nav-mobile-version {
  margin-top: 8px;
  padding-top: 18px;
  border-top: 1px solid rgba(0, 120, 193, 0.12);
  color: #0078C1;
  font-weight: 600;
}

.theme-future .nav-mobile a.nav-mobile-version {
  border-top-color: rgba(0, 212, 255, 0.2);
  color: #00D4FF;
}

.version-bar--classic3 .version-bar__inner {
  border-color: rgba(217, 35, 46, 0.18);
}

.version-bar--classic3 .version-bar__info strong {
  color: #D9232E;
}

.version-bar--classic3 .version-bar__tag {
  background: rgba(217, 35, 46, 0.08);
  color: #D9232E;
}

.version-bar--duanwu .version-bar__inner {
  border-color: rgba(45, 106, 79, 0.18);
}

.version-bar--duanwu .version-bar__info strong {
  color: #2D6A4F;
}

.version-bar--duanwu .version-bar__tag {
  background: rgba(45, 106, 79, 0.08);
  color: #2D6A4F;
}

@media (max-width: 768px) {
  .version-bar {
    width: calc(100vw - 16px);
    bottom: 16px;
    overflow: visible;
  }

  .version-bar--collapsed {
    right: 12px;
    bottom: 16px;
  }

  .version-bar--collapsed .version-bar__toggle {
    width: 44px;
    height: 44px;
  }

  .version-bar__inner {
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-areas:
      "toggle info"
      "actions actions";
    align-items: center;
    gap: 8px 10px;
    padding: 10px 10px 8px;
    border-radius: 18px;
    overflow: hidden;
    min-width: 0;
  }

  .version-bar__toggle {
    grid-area: toggle;
  }

  .version-bar__info {
    grid-area: info;
    min-width: 0;
  }

  .version-bar__info span:not(.version-bar__tag) {
    display: none;
  }

  .version-bar__actions {
    grid-area: actions;
    display: flex;
    flex-wrap: nowrap;
    flex-shrink: 1;
    justify-content: flex-start;
    gap: 6px;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-x: contain;
    touch-action: pan-x;
    scrollbar-width: none;
    padding: 2px 8px 4px 2px;
    margin: 0;
    scroll-padding-inline: 12px;
  }

  .version-bar__actions::-webkit-scrollbar {
    display: none;
  }

  .version-bar__btn {
    flex-shrink: 0;
    padding: 8px 10px;
    font-size: 0.72rem;
  }

  .version-bar__btn--classic,
  .version-bar__btn--classic2,
  .version-bar__btn--classic3,
  .version-bar__btn--duanwu,
  .version-bar__btn--future {
    font-size: 0;
    gap: 4px;
  }

  .version-bar__btn--classic::after,
  .version-bar__btn--classic2::after,
  .version-bar__btn--classic3::after,
  .version-bar__btn--duanwu::after,
  .version-bar__btn--future::after {
    font-size: 0.72rem;
    font-weight: 600;
  }

  .version-bar__btn--classic::after { content: '企业版'; }
  .version-bar__btn--classic2::after { content: '版2'; }
  .version-bar__btn--classic3::after { content: '版3'; }
  .version-bar__btn--duanwu::after { content: '端午'; }

  .version-bar__btn--future svg {
    width: 14px;
    height: 14px;
  }

  .version-bar__btn--future::after {
    content: '科技版';
  }

  .version-bar--classic2 {
    width: calc(100vw - 16px);
  }

  .version-bar--classic2 .version-bar__actions {
    flex-wrap: nowrap;
    justify-content: flex-start;
  }

  .version-nav-switch span {
    display: none;
  }

  .version-nav-switch {
    padding: 8px 10px !important;
  }
}