/* ============================================================
   forest-nav.css — 森林主题顶栏 · 晨雾透明 → 滚动毛玻璃深林绿
   需：body.home-forest、#main-nav.fr-mist-nav、main.js 切换 .is-scrolled
   ============================================================ */

/* ── 顶栏：平滑过渡 ── */
body.home-forest #main-nav.fr-mist-nav {
  border-bottom: 1px solid transparent;
  box-shadow: none;
  /* 勿对 backdrop-filter 做过渡：打开语言/登录 modal 时规则会切到 blur(none)，插值会导致整栏（含右侧头像区）闪动 */
  transition:
    background 0.5s cubic-bezier(0.4, 0, 0.2, 1),
    border-color 0.5s cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 页顶：融入背景，仅保留轻微可读性 */
body.home-forest #main-nav.fr-mist-nav:not(.is-scrolled) {
  background: rgba(15, 31, 24, 0.04);
  -webkit-backdrop-filter: blur(0px);
  backdrop-filter: blur(0px);
}

body.home-forest #main-nav.fr-mist-nav:not(.is-scrolled)::before {
  opacity: 0;
  transition: opacity 0.45s ease;
}

/* 滚动后：晨雾磨砂 + 深林绿 */
body.home-forest #main-nav.fr-mist-nav.is-scrolled {
  background: rgba(6, 42, 28, 0.78);
  border-bottom-color: rgba(167, 243, 208, 0.16);
  box-shadow:
    0 1px 0 rgba(134, 239, 172, 0.07) inset,
    0 18px 50px -14px rgba(0, 0, 0, 0.55);
  -webkit-backdrop-filter: blur(22px) saturate(1.18);
  backdrop-filter: blur(22px) saturate(1.18);
}

body.home-forest #main-nav.fr-mist-nav.is-scrolled::before {
  opacity: 0.9;
  background: linear-gradient(90deg, transparent 6%, rgba(74, 222, 128, 0.32) 50%, transparent 94%);
  transition: opacity 0.45s ease;
}

/* 中部链接：扁平文字 + 悬停底光，无胶囊轨道 */
body.home-forest #main-nav.fr-mist-nav .nav-links {
  background: transparent;
  border: none;
  box-shadow: none;
}

body.home-forest #main-nav.fr-mist-nav .nav-links a {
  position: relative;
  z-index: 0;
  text-decoration: none;
  border: none;
  margin: 0;
  padding: 9px 14px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.02em;
  color: rgba(236, 253, 245, 0.55);
  background: transparent;
  box-shadow: none;
  transition: color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

body.home-forest #main-nav.fr-mist-nav .nav-links a::after {
  display: none;
}

body.home-forest #main-nav.fr-mist-nav .nav-links a:hover:not(.active),
body.home-forest #main-nav.fr-mist-nav .nav-links a:focus-visible:not(.active) {
  color: rgba(236, 253, 245, 0.92);
  background: rgba(255, 255, 255, 0.06);
}

body.home-forest #main-nav.fr-mist-nav .nav-links a.active {
  background: linear-gradient(135deg, #14532d 0%, #166534 55%, #15803d 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(22, 101, 52, 0.18);
}

/* OpenClaw：默认与其它链接同色、无描边（原先为产品强调做了常驻描边，易被误认为「已选中」） */
body.home-forest #main-nav.fr-mist-nav .nav-links a.nav-link-openclaw {
  font-weight: 750;
  letter-spacing: 0.04em;
}

body.home-forest #main-nav.fr-mist-nav .nav-links a.nav-link-openclaw.active {
  border-color: transparent;
  color: #fff;
  background: linear-gradient(135deg, #14532d 0%, #166534 55%, #15803d 100%);
  box-shadow: 0 4px 14px rgba(22, 101, 52, 0.18);
}

/* 品牌与操作区（与 index.css 森林系一致，略调过渡） */
body.home-forest #main-nav.fr-mist-nav .nav-logo-text {
  background: linear-gradient(135deg, #ecfdf5 0%, #86efac 40%, #4ade80 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: filter 0.35s ease, opacity 0.35s ease;
}

body.home-forest #main-nav.fr-mist-nav:not(.is-scrolled) .nav-logo-text {
  filter: drop-shadow(0 1px 12px rgba(6, 20, 14, 0.45));
}

body.home-forest #main-nav.fr-mist-nav .brand-mark {
  background: linear-gradient(145deg, #14532d 0%, #15803d 50%, #4ade80 100%);
  box-shadow:
    0 0 0 1px rgba(134, 239, 172, 0.28),
    0 4px 18px rgba(34, 197, 94, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.22);
  transition: box-shadow 0.4s ease, transform 0.35s ease;
}

body.home-forest #main-nav.fr-mist-nav .brand-logo-img {
  width: 56%;
  height: auto;
}

body.home-forest #main-nav.fr-mist-nav .btn-nav-primary {
  background: linear-gradient(135deg, #14532d 0%, #166534 55%, #15803d 100%);
  box-shadow: 0 6px 18px -6px rgba(22, 101, 52, 0.16);
}

body.home-forest #main-nav.fr-mist-nav .btn-nav-primary:hover {
  filter: brightness(1.06);
  box-shadow: 0 8px 22px -6px rgba(74, 222, 128, 0.28);
}

body.home-forest #main-nav.fr-mist-nav .btn-lang__halo {
  background: conic-gradient(from 200deg, #15803d, #22c55e, #86efac, #4ade80, #15803d);
  opacity: 0.26;
}

body.home-forest #main-nav.fr-mist-nav .btn-lang:hover .btn-lang__halo {
  opacity: 0.42;
}

body.home-forest #main-nav.fr-mist-nav .btn-lang.lang-active .btn-lang__halo {
  opacity: 0.5;
}

body.home-forest #main-nav.fr-mist-nav .btn-lang__body {
  background: linear-gradient(175deg, rgba(255, 255, 255, 0.12) 0%, rgba(10, 28, 22, 0.72) 100%);
  border-color: rgba(167, 243, 208, 0.28);
  color: var(--fr-mist-dim, #a7f3d0);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.08) inset,
    0 6px 18px rgba(0, 0, 0, 0.28);
  transition: border-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
}

body.home-forest #main-nav.fr-mist-nav .btn-lang:hover .btn-lang__body {
  border-color: rgba(74, 222, 128, 0.45);
  color: var(--fr-moss, #4ade80);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.1) inset,
    0 8px 22px rgba(34, 197, 94, 0.18);
}

body.home-forest #main-nav.fr-mist-nav .btn-lang.lang-active .btn-lang__body {
  border-color: rgba(74, 222, 128, 0.55);
  color: var(--fr-moss, #4ade80);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.08) inset,
    0 0 0 1px rgba(74, 222, 128, 0.12),
    0 10px 26px rgba(34, 197, 94, 0.22);
}

/* 语言下拉：首页/定价等只引 forest-nav、未引 forest-pages 时也要森林配色 */
body.home-forest .lang-menu {
  background: linear-gradient(168deg, rgba(18, 40, 32, 0.98) 0%, rgba(12, 28, 22, 0.97) 58%, rgba(10, 24, 19, 0.98) 100%);
  border-color: rgba(167, 243, 208, 0.22);
  box-shadow: 0 28px 70px -18px rgba(0, 0, 0, 0.55);
}

body.home-forest .lang-menu::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(circle at 88% 0%, rgba(74, 222, 128, 0.1), transparent 42%);
  pointer-events: none;
}

body.home-forest .lang-menu__title {
  color: rgba(236, 253, 245, 0.72);
  border-bottom-color: rgba(167, 243, 208, 0.15);
}

body.home-forest .lang-menu__title::after {
  background: linear-gradient(90deg, #22c55e, #4ade80, #86efac);
}

body.home-forest .lang-menu .lang-option {
  background: linear-gradient(148deg, rgba(16, 38, 30, 0.92) 0%, rgba(10, 26, 20, 0.88) 100%);
  border-color: rgba(167, 243, 208, 0.2);
  color: var(--fr-mist, #ecfdf5);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset;
}

body.home-forest .lang-menu .lang-option:hover,
body.home-forest .lang-menu .lang-option.selected {
  border-color: rgba(74, 222, 128, 0.42);
  background: linear-gradient(148deg, rgba(22, 60, 45, 0.88) 0%, rgba(14, 40, 30, 0.82) 100%);
  color: var(--fr-moss, #4ade80);
}

body.home-forest .lang-menu .lang-option.selected {
  background: linear-gradient(148deg, rgba(22, 101, 52, 0.35) 0%, rgba(12, 38, 28, 0.85) 100%);
}

body.home-forest .lang-menu .lang-option.selected::after {
  background: var(--fr-moss, #4ade80) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230f172a' stroke-width='2.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E") center / 12px no-repeat;
  box-shadow: 0 2px 12px rgba(74, 222, 128, 0.35);
}

body.home-forest .lang-menu .lang-flag {
  background: radial-gradient(circle at 32% 22%, rgba(255, 255, 255, 0.12) 0%, rgba(10, 28, 22, 0.75) 100%);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.06) inset,
    0 2px 12px rgba(0, 0, 0, 0.25);
}

body.home-forest .lang-menu .lang-option::before {
  background: linear-gradient(180deg, #22c55e, #86efac);
}

body.home-forest #main-nav.fr-mist-nav .hamburger span {
  background: rgba(236, 253, 245, 0.92);
  transition: background 0.3s ease;
}

body.home-forest #main-nav.fr-mist-nav .user-pill--tile {
  border-color: rgba(134, 239, 172, 0.32);
  background: rgba(10, 26, 20, 0.55);
  box-shadow: 0 0 0 1px rgba(74, 222, 128, 0.06);
}

body.home-forest #main-nav.fr-mist-nav .user-pill--tile:hover {
  background: rgba(22, 101, 52, 0.42);
  border-color: rgba(74, 222, 128, 0.42);
}

body.home-forest #main-nav.fr-mist-nav .user-avatar {
  background: linear-gradient(145deg, #14532d 0%, #166534 40%, #22c55e 100%);
}

body.home-forest #main-nav.fr-mist-nav .nav-logout-btn {
  color: rgba(252, 165, 165, 0.95);
}

body.home-forest #main-nav.fr-mist-nav .nav-logout-btn:hover {
  color: #fecaca;
  background: rgba(239, 68, 68, 0.12);
}

body.home-forest #main-nav.fr-mist-nav .nav-auth-slot {
  width: 178px;
  contain: layout style;
  isolation: isolate;
}

/* 抽屉左侧 scrim：纯实色（移动菜单从顶栏下方开始，与顶栏无重叠） */
body.home-forest .mobile-menu-scrim {
  background: rgba(2, 10, 7, 0.72);
}

/* 面板本体：深林绿背景 */
body.home-forest .mobile-nav-panel {
  background: linear-gradient(168deg, rgba(10, 28, 22, 0.98) 0%, rgba(6, 20, 14, 0.99) 100%);
  border-color: rgba(134, 239, 172, 0.14);
  box-shadow: -12px 0 40px rgba(0, 0, 0, 0.55);
}

body.home-forest .mobile-nav-panel__head {
  border-bottom-color: rgba(167, 243, 208, 0.12);
}

body.home-forest .mobile-nav-panel__title {
  color: rgba(167, 243, 208, 0.5);
}

body.home-forest .mobile-nav-panel__close {
  background: rgba(255, 255, 255, 0.06);
  color: rgba(236, 253, 245, 0.85);
  border: 1px solid rgba(134, 239, 172, 0.18);
}

body.home-forest .mobile-nav-panel__close:hover {
  background: rgba(74, 222, 128, 0.14);
  color: #ecfdf5;
  border-color: rgba(134, 239, 172, 0.35);
}

/* 导航链接：去掉蓝色，改为森林绿 */
body.home-forest .mobile-nav-panel__links a {
  color: rgba(236, 253, 245, 0.82);
}

body.home-forest .mobile-nav-panel__links a:hover {
  background: rgba(74, 222, 128, 0.1);
  color: var(--fr-mist, #ecfdf5);
}

body.home-forest .mobile-nav-panel__links a.active {
  background: linear-gradient(135deg, rgba(21, 128, 61, 0.35) 0%, rgba(34, 197, 94, 0.2) 100%);
  color: var(--fr-fern, #4ade80);
}

/* 底部操作区分割线 */
body.home-forest .mobile-nav-actions {
  border-top-color: rgba(134, 239, 172, 0.1);
}

/* 博客文章顶进度条：让出固定导航高度 */
body.home-forest .article-reading-bar {
  top: var(--nav-height);
}

/* 任意全屏 modal 打开时关掉顶栏模糊：避免与 .modal-overlay 的 backdrop-filter 叠层闪动（语言切换等） */
body.home-forest:has(.modal-overlay.open) #main-nav.fr-mist-nav,
body.home-forest:has(.modal-overlay.open) #main-nav.fr-mist-nav.is-scrolled,
body.home-forest:has(.modal-overlay.open) #main-nav.fr-mist-nav:not(.is-scrolled) {
  -webkit-backdrop-filter: none !important;
  backdrop-filter: none !important;
}
body.home-forest:has(.modal-overlay.open) #main-nav.fr-mist-nav.is-scrolled {
  background: rgba(6, 42, 28, 0.94);
}
body.home-forest:has(.modal-overlay.open) #main-nav.fr-mist-nav:not(.is-scrolled) {
  background: rgba(14, 28, 22, 0.9);
}

/* 窄屏顶栏去掉 backdrop-filter：小屏 GPU 上模糊 + 抽屉切换仍可能闪，改为纯色条 */
@media (max-width: 768px) {
  body.home-forest #main-nav.fr-mist-nav,
  body.home-forest #main-nav.fr-mist-nav.is-scrolled,
  body.home-forest #main-nav.fr-mist-nav:not(.is-scrolled) {
    -webkit-backdrop-filter: none !important;
    backdrop-filter: none !important;
  }
  body.home-forest #main-nav.fr-mist-nav.is-scrolled {
    background: rgba(6, 42, 28, 0.93);
  }
  body.home-forest #main-nav.fr-mist-nav:not(.is-scrolled) {
    background: rgba(12, 26, 20, 0.9);
  }

  /* 移动端重置 nav-auth-slot：覆盖桌面端固定宽度，防止汉堡按钮被挤出屏外 */
  body.home-forest #main-nav.fr-mist-nav .nav-auth-slot {
    width: auto;
    min-width: 0;
    height: auto;
    contain: none;
    isolation: auto;
  }
  body.home-forest #main-nav.fr-mist-nav .nav-auth-layer {
    position: static;
    transform: none;
  }

  /* 移动端隐藏顶栏 CTA：移动菜单面板内已有「登录 / 注册」按钮 */
  body.home-forest #main-nav.fr-mist-nav .btn-nav-primary {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  body.home-forest #main-nav.fr-mist-nav,
  body.home-forest #main-nav.fr-mist-nav .nav-links,
  body.home-forest #main-nav.fr-mist-nav .nav-links a {
    transition-duration: 0.01ms !important;
  }

  #mobile-menu {
    transition-delay: 0s !important;
  }

  .mobile-nav-panel {
    transition: none !important;
  }
}