/* ═══════════════════════════════════════════════════════════
   顶部栏目 · 简约导航（仿 motionsites.ai，干净留白）

   设计要点：
   · 顶部**完全无栏目背景**（透明，无底色、无毛玻璃、无阴影）
   · logo「摸鱼基地」白色，紧贴最左
   · 栏目文字紧跟 logo 之后（左对齐，不居中）
   · 栏目文字默认 #eaf8f9；hover / 当前选中 → 文字变 #14343c
   · 右侧「注册/登录」保持最右原位，同款风格
   ═══════════════════════════════════════════════════════════ */

/* ── 容器：固定顶部，完全透明，无任何背景 ── */
.global-nav {
  position: fixed;
  inset: 1.5rem 3.5rem auto;
  z-index: 25;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 1.5rem;
  min-height: 2.75rem;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

/* 品牌 logo：回到文档流，紧贴最左，白色 */
.global-nav .site-brand {
  position: static;
  transform: none;
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: #ffffff;
  font-size: 1.4rem;
  font-weight: 700;
  white-space: nowrap;
}
.global-nav .site-brand-logo {
  width: 2rem;
  height: 2rem;
  display: block;
  object-fit: contain;
}

/* ── 菜单：紧跟 logo，左对齐，无容器底 ── */
.global-nav .nav-stack.glass-radio-group {
  position: static;
  transform: none;
  display: flex;
  flex-direction: row;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.25rem;
  width: auto;
  max-width: none;
  min-height: 0;
  margin: 0;
  padding: 0;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  overflow: visible;
  isolation: auto;
  user-select: none;
  -webkit-user-select: none;
}

/* 隐藏原生 radio（保留可聚焦性） */
.global-nav .nav-stack.glass-radio-group .glass-radio {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

/* 旧滑块：新设计不再需要，隐藏 */
.global-nav .nav-stack.glass-radio-group .glass-glider {
  display: none;
}

/* ── 栏目标签：默认浅字，hover / 选中 → 仅文字变深，无任何背景 ── */
.global-nav .nav-stack.glass-radio-group label.nav-button {
  position: relative;
  z-index: 1;
  flex: 0 0 auto;
  min-width: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 0.5rem 0.95rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
  color: #eaf8f9;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.3px;
  line-height: 1.2;
  white-space: nowrap;
  text-shadow: none;
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}

.global-nav .nav-stack.glass-radio-group label.nav-button:hover {
  color: #14343c;
  background: transparent;
  transform: none;
  text-shadow: none;
}

/* 当前选中：与 hover 一致（仅文字变深，无背景），标明所在栏目 */
.global-nav .nav-stack.glass-radio-group input.glass-radio:checked + label.nav-button,
.global-nav .nav-stack.glass-radio-group label.nav-button.is-active {
  color: #14343c;
  background: transparent;
  text-shadow: none;
}

.global-nav .nav-stack.glass-radio-group input.glass-radio:focus-visible + label.nav-button {
  outline: 2px solid rgba(234, 248, 249, 0.7);
  outline-offset: 2px;
}

/* ── 右侧「注册/登录」：保持最右原位，同款简约风格 ── */
.global-nav .top-login-button {
  position: static;
  transform: none;
  justify-self: auto;
  margin-left: auto;            /* 推到最右 */
  display: inline-flex;
  align-items: center;
  min-height: 2.5rem;
  padding: 0 1.15rem;
  border: 1px solid rgba(234, 248, 249, 0.5);
  border-radius: 999px;
  color: #eaf8f9;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.3px;
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}
/* 去掉 liquid-glass 光泽伪元素 */
.global-nav .top-login-button::before {
  display: none;
}
.global-nav .top-login-button:hover {
  color: #14343c;
  background: rgba(234, 248, 249, 0.92);
  border-color: transparent;
  transform: none;
}

/* ── 窄屏：品牌与登录首行，菜单整行换行居左 ── */
@media (max-width: 760px) {
  .global-nav {
    inset: 1rem 1.25rem auto;
    gap: 0.75rem;
    flex-wrap: wrap;
    padding: 0;
  }
  .global-nav .top-login-button {
    margin-left: auto;
    order: 2;
  }
  .global-nav .nav-stack.glass-radio-group {
    order: 3;
    flex: 1 0 100%;
  }
}

/* ── 减弱动效 ── */
@media (prefers-reduced-motion: reduce) {
  .global-nav .nav-stack.glass-radio-group label.nav-button,
  .global-nav .top-login-button {
    transition: none;
  }
}

/* ── 浅色内容页（.nav-solid，非首页）：白底胶囊 + 深色文字 ── */
.global-nav.nav-solid {
  padding: 0.35rem 0.9rem;
  border: 1px solid rgba(20, 52, 60, 0.08);
  border-radius: 1.25rem;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 8px 28px rgba(20, 52, 60, 0.14);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.global-nav.nav-solid .site-brand {
  color: #14343c;
}
.global-nav.nav-solid .nav-stack.glass-radio-group label.nav-button {
  color: #14343c;
}
.global-nav.nav-solid .nav-stack.glass-radio-group label.nav-button:hover,
.global-nav.nav-solid .nav-stack.glass-radio-group input.glass-radio:checked + label.nav-button,
.global-nav.nav-solid .nav-stack.glass-radio-group label.nav-button.is-active {
  background: rgba(20, 52, 60, 0.08);
  color: #0d2830;
}
.global-nav.nav-solid .nav-stack.glass-radio-group input.glass-radio:focus-visible + label.nav-button {
  outline-color: rgba(20, 52, 60, 0.5);
}
.global-nav.nav-solid .top-login-button {
  color: #14343c;
  border-color: rgba(20, 52, 60, 0.25);
  background: rgba(255, 255, 255, 0.6);
}
.global-nav.nav-solid .top-login-button:hover {
  color: #ffffff;
  background: #14343c;
  border-color: transparent;
}

/* ── 打赏克隆页：套用新简约导航（透明栏、无背景） ── */
.reward-clone-view .global-nav {
  background: transparent !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}
.reward-clone-view .global-nav .nav-stack,
.reward-clone-view .global-nav .nav-stack.glass-radio-group,
.reward-clone-view .global-nav .nav-button,
.reward-clone-view .global-nav .top-login-button {
  background: transparent !important;
  border: 0 !important;
  box-shadow: none !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  color: #eaf8f9 !important;
}
.reward-clone-view .global-nav .nav-button.is-active,
.reward-clone-view .global-nav .nav-button:hover,
.reward-clone-view .global-nav .top-login-button:hover {
  background: rgba(234, 248, 249, 0.92) !important;
  color: #14343c !important;
}
.reward-clone-view .global-nav .glass-glider {
  display: none !important;
}