/* ================================================================
   岳西人网 - 导航栏样式 (v3 透明导航 + 滚动切换)
   ================================================================ */

/* ----------------------------------------------------------------
   site-nav 通用基础
   ---------------------------------------------------------------- */
#site-header.site-nav {
  width: 100%;
  z-index: 1000;
  transition: background 0.35s, box-shadow 0.35s, backdrop-filter 0.35s;
}

/* 首页初始状态：透明背景，白色文字 */
#site-header.site-nav--home {
  position: absolute;
  top: 0; left: 0; right: 0;
  background: transparent;
  border-bottom: none;
}

/* 首页滚动后：白色背景 */
#site-header.site-nav--home.is-scrolled {
  position: fixed;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

/* 首页透明状态：鼠标悬停时变成白色背景 */
#site-header.site-nav--home:not(.is-scrolled):hover {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

/* 子页面：始终白色背景 */
#site-header.site-nav--sticky {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

/* ----------------------------------------------------------------
   导航内容行
   ---------------------------------------------------------------- */
.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 48px;
  height: 72px;
  display: flex;
  align-items: center;
  gap: 0;
}

/* Logo - 绿色，不加滤镜 */
.nav-logo {
  flex-shrink: 0;
  margin-right: 32px;
}
.nav-logo .logo-img {
  height: 36px;
  width: auto;
  display: block;
  transition: opacity 0.2s, transform 0.2s, filter 0.35s;
}

/* 首页透明导航时：Logo 白色 */
#site-header.site-nav--home:not(.is-scrolled) .nav-logo .logo-img {
  filter: brightness(0) invert(1);
}
/* 首页透明导航：鼠标悬停导航栏时，Logo 变回绿色 */
#site-header.site-nav--home:not(.is-scrolled):hover .nav-logo .logo-img {
  filter: none;
}
.nav-logo:hover .logo-img {
  opacity: 0.85;
  transform: scale(1.03);
}

/* 导航链接组 */
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}
.nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: #57534E;
  padding: 6px 12px;
  border-radius: 6px;
  letter-spacing: 0.3px;
  white-space: nowrap;
  transition: color 0.2s, background 0.2s;
  text-decoration: none;
}

/* 首页透明导航时：白色文字 */
#site-header.site-nav--home:not(.is-scrolled) .nav-link {
  color: rgba(255, 255, 255, 0.92);
}
#site-header.site-nav--home:not(.is-scrolled) .nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}
#site-header.site-nav--home:not(.is-scrolled) .nav-link::after {
  background: #fff;
}
/* 首页透明导航：鼠标悬停导航栏时，链接变回深色 */
#site-header.site-nav--home:not(.is-scrolled):hover .nav-link {
  color: #57534E;
}
#site-header.site-nav--home:not(.is-scrolled):hover .nav-link:hover {
  color: #2D7A5F;
  background: rgba(45, 122, 95, 0.06);
}
#site-header.site-nav--home:not(.is-scrolled):hover .nav-link::after {
  background: #2D7A5F;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: #2D7A5F;
  border-radius: 1px;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.nav-link:hover {
  color: #2D7A5F;
  background: rgba(45, 122, 95, 0.06);
}
.nav-link:hover::after {
  left: 20%;
  width: 60%;
}
.nav-link--active {
  color: #2D7A5F !important;
}
.nav-link--active::after {
  left: 20% !important;
  width: 60% !important;
}

/* CTA 按钮 - 进店逛逛 */
.nav-cta {
  flex-shrink: 0;
  padding: 10px 24px;
  background: #2D7A5F;
  color: #fff !important;
  border-radius: 24px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.5px;
  box-shadow: 0 2px 12px rgba(45, 122, 95, 0.25);
  transition: all 0.25s;
  text-decoration: none;
  margin-left: 16px;
}

/* 首页透明导航时：CTA 按钮改为白色边框样式 */
#site-header.site-nav--home:not(.is-scrolled) .nav-cta {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: none;
}
#site-header.site-nav--home:not(.is-scrolled) .nav-cta:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: #fff;
}
/* 首页透明导航：鼠标悬停导航栏时，CTA 按钮变回绿色 */
#site-header.site-nav--home:not(.is-scrolled):hover .nav-cta {
  background: #2D7A5F;
  border: none;
  box-shadow: 0 2px 12px rgba(45, 122, 95, 0.25);
}
.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(45, 122, 95, 0.4);
  background: #256B52;
  color: #fff;
}

/* 汉堡按钮（移动端） */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  margin-left: 12px;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: #57534E;
  border-radius: 2px;
  transition: all 0.3s;
}

/* 首页透明导航时：汉堡菜单白色 */
#site-header.site-nav--home:not(.is-scrolled) .nav-hamburger span {
  background: #fff;
}
/* 首页透明导航：鼠标悬停导航栏时，汉堡菜单变回深色 */
#site-header.site-nav--home:not(.is-scrolled):hover .nav-hamburger span {
  background: #57534E;
}
.nav-hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.is-open span:nth-child(2) { opacity: 0; }
.nav-hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ----------------------------------------------------------------
   移动端抽屉
   ---------------------------------------------------------------- */
.nav-drawer {
  display: none;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  padding: 12px 0 24px;
}
.nav-drawer.is-open {
  display: flex;
}
.drawer-link {
  display: block;
  padding: 14px 28px;
  font-size: 16px;
  font-weight: 500;
  color: #57534E;
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
  transition: all 0.2s;
  text-decoration: none;
}
.drawer-link:hover, .drawer-link.active {
  color: #2D7A5F;
  background: rgba(45, 122, 95, 0.06);
  padding-left: 36px;
}
.drawer-cta {
  display: block;
  margin: 16px 28px 0;
  padding: 12px 24px;
  background: #2D7A5F;
  color: #fff !important;
  border-radius: 8px;
  text-align: center;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 4px 16px rgba(45, 122, 95, 0.3);
}

/* ----------------------------------------------------------------
   在线咨询悬浮按钮
   ---------------------------------------------------------------- */
#onlineConsult {
    position: fixed;
    bottom: 100px;
    right: 24px;
    z-index: 1000;
}
.onlineConsult-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: auto;
    padding: 10px 4px;
    background: #2D7A5F;
    border-radius: 28px;
    color: #fff;
    font-size: 24px;
    text-decoration: none;
    box-shadow: 0 4px 16px rgba(45, 122, 95, 0.35);
    transition: all 0.3s;
    gap: 4px;
}
.onlineConsult-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 24px rgba(45, 122, 95, 0.5);
    color: #fff;
}
.onlineConsult-btn .iconfont {
    font-size: 22px;
}
.onlineConsult-btn .btn-text {
    font-size: 11px;
    line-height: 1.2;
    color: #fff;
    text-align: center;
}

/* 返回顶部按钮 */
#backToTop {
    position: fixed;
    bottom: 36px;
    right: 24px;
    z-index: 1000;
    display: none;
}
.btn-backToTop {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: auto;
    padding: 10px 4px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 28px;
    color: #57534E;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.25s;
    gap: 4px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}
.btn-backToTop:hover {
    background: #2D7A5F;
    border-color: #2D7A5F;
    color: #fff;
}
.btn-backToTop .btn-text {
    font-size: 11px;
    line-height: 1.2;
    color: inherit;
    text-align: center;
}

/* ----------------------------------------------------------------
   响应式
   ---------------------------------------------------------------- */
@media (max-width: 1024px) {
  .nav-link {
    font-size: 14px;
    padding: 6px 10px;
  }
  .nav-cta {
    padding: 9px 18px;
    font-size: 13px;
    margin-left: 8px;
  }
  .nav-inner {
    padding: 0 24px;
  }
}
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-hamburger { display: flex; }
  .nav-inner { padding: 0 20px; }
}
@media (max-width: 750px) {
  .nav-inner { height: 60px; }
  .nav-logo .logo-img { height: 32px; }
}