/* ==========================================================================
   Fate Hub · Dark Neumorphism Core Architecture
   高级深色拟态基础设计系统 · 2026 全面重构版
   ========================================================================== */

:root, :root[data-theme="dark"] {
  /* 深度拟态灰蓝调色盘 */
  --bg-deep: #0b0e14;
  --bg-base: #10151f;
  --bg-surface: #161c28;
  --bg-surface-elevated: #1b2332;
  --bg-inset: #0e121a;
  
  /* 拟态光影模型 (精算双向漫反射) */
  --neu-shadow-raised: 8px 10px 24px rgba(0, 0, 0, 0.5), -4px -4px 14px rgba(255, 255, 255, 0.035);
  --neu-shadow-raised-sm: 4px 6px 14px rgba(0, 0, 0, 0.45), -2px -2px 8px rgba(255, 255, 255, 0.03);
  --neu-shadow-raised-lg: 14px 18px 36px rgba(0, 0, 0, 0.6), -6px -6px 20px rgba(255, 255, 255, 0.04);
  --neu-shadow-sunken: inset 4px 4px 10px rgba(0, 0, 0, 0.55), inset -2px -2px 6px rgba(255, 255, 255, 0.025);
  --neu-shadow-sunken-sm: inset 2px 2px 6px rgba(0, 0, 0, 0.5), inset -1px -1px 4px rgba(255, 255, 255, 0.02);
  --neu-shadow-button: 5px 6px 16px rgba(0, 0, 0, 0.45), -2px -2px 8px rgba(255, 255, 255, 0.035);
  --neu-shadow-pressed: inset 3px 3px 8px rgba(0, 0, 0, 0.6), inset -1px -1px 4px rgba(255, 255, 255, 0.02);
  
  /* 精致微边框 */
  --neu-border: 1px solid rgba(255, 255, 255, 0.05);
  --neu-border-focus: 1px solid rgba(255, 255, 255, 0.15);
  --neu-border-top-highlight: 1px solid rgba(255, 255, 255, 0.08);

  /* 游戏专属品牌色 */
  --gta-primary: #ff3344;
  --gta-secondary: #ff6b3d;
  --gta-glow: rgba(255, 51, 68, 0.3);
  --gta-glow-soft: rgba(255, 51, 68, 0.12);

  --rdr-primary: #f5a623;
  --rdr-secondary: #e67e22;
  --rdr-glow: rgba(245, 166, 35, 0.3);
  --rdr-glow-soft: rgba(245, 166, 35, 0.12);

  /* 文字分级 */
  --text-pure: #ffffff;
  --text-main: #e2e8f0;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* 字体系列 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", Consolas, "SF Mono", monospace;

  /* 转场控制 */
  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
  --trans-fast: 0.18s ease;
  --trans-normal: 0.28s var(--ease-spring);
}

/* ==========================================================================
   经典高雅浅色拟态设计系统 (Light Neumorphism Core)
   ========================================================================== */
:root[data-theme="light"] {
  /* 浅色底座灰白调色盘 */
  --bg-deep: #e8ecf2;
  --bg-base: #f0f4f8;
  --bg-surface: #f8fafd;
  --bg-surface-elevated: #ffffff;
  --bg-inset: #e2e7ef;

  /* 浅色拟态光影模型 (左上纯白高光 + 右下低饱和冷灰漫反射阴影) */
  --neu-shadow-raised: 8px 10px 22px rgba(166, 178, 196, 0.46), -7px -7px 18px rgba(255, 255, 255, 0.95);
  --neu-shadow-raised-sm: 4px 5px 12px rgba(166, 178, 196, 0.38), -3px -3px 8px rgba(255, 255, 255, 0.9);
  --neu-shadow-raised-lg: 14px 18px 36px rgba(166, 178, 196, 0.52), -9px -9px 24px rgba(255, 255, 255, 1);
  --neu-shadow-sunken: inset 4px 4px 9px rgba(166, 178, 196, 0.42), inset -3px -3px 7px rgba(255, 255, 255, 0.95);
  --neu-shadow-sunken-sm: inset 2px 2px 6px rgba(166, 178, 196, 0.38), inset -2px -2px 5px rgba(255, 255, 255, 0.9);
  --neu-shadow-button: 4px 5px 14px rgba(166, 178, 196, 0.4), -3px -3px 9px rgba(255, 255, 255, 0.95);
  --neu-shadow-pressed: inset 3px 3px 7px rgba(166, 178, 196, 0.5), inset -2px -2px 5px rgba(255, 255, 255, 0.85);

  /* 浅色高光微边框 */
  --neu-border: 1px solid rgba(255, 255, 255, 0.85);
  --neu-border-focus: 1px solid rgba(37, 99, 235, 0.35);
  --neu-border-top-highlight: 1px solid rgba(255, 255, 255, 1);

  /* 游戏专属品牌色 (高可读反差优化) */
  --gta-primary: #dc2626;
  --gta-secondary: #ea580c;
  --gta-glow: rgba(220, 38, 38, 0.25);
  --gta-glow-soft: rgba(220, 38, 38, 0.08);

  --rdr-primary: #d97706;
  --rdr-secondary: #b45309;
  --rdr-glow: rgba(217, 119, 6, 0.25);
  --rdr-glow-soft: rgba(217, 119, 6, 0.08);

  /* 文字分级 (冷板岩黑与炭灰) */
  --text-pure: #090d16;
  --text-main: #1e293b;
  --text-muted: #334155;
  --text-dim: #475569;
}

/* 基础重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: auto;
  background-color: var(--bg-deep);
  color: var(--text-main);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  background:
    radial-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    radial-gradient(circle at 15% 15%, rgba(255, 51, 68, 0.07) 0%, transparent 40%),
    radial-gradient(circle at 85% 85%, rgba(245, 166, 35, 0.06) 0%, transparent 40%),
    radial-gradient(circle at 50% 50%, #10151f 0%, #0b0e14 100%);
  background-size: 28px 28px, auto, auto, auto;
  /* Fixed background attachment forces full-page repaint during scroll in Chromium. */
  background-attachment: scroll;
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--trans-fast);
}

img {
  max-width: 100%;
  display: block;
}

button, input, select {
  font-family: inherit;
  border: none;
  outline: none;
  background: none;
  color: inherit;
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-deep);
}
::-webkit-scrollbar-thumb {
  background: #232b3a;
  border-radius: 4px;
  border: 2px solid var(--bg-deep);
}
::-webkit-scrollbar-thumb:hover {
  background: #333f54;
}

/* ==========================================================================
   全局组件：高级深色拟态卡片与按钮
   ========================================================================== */

/* 浮起拟态卡片 */
.neu-card {
  background: var(--bg-surface);
  box-shadow: var(--neu-shadow-raised);
  border: var(--neu-border);
  border-radius: 18px;
  position: relative;
  transition: transform var(--trans-normal), border-color var(--trans-normal);
  z-index: 1;
}

.neu-card:hover {
  border-color: rgba(255, 255, 255, 0.1);
}

.neu-card:focus-within {
  border-color: rgba(255, 255, 255, 0.16);
  box-shadow: var(--neu-shadow-raised-lg), 0 0 0 2px rgba(255, 255, 255, 0.04);
}

.neu-card > :first-child {
  position: relative;
  z-index: 1;
}

.neu-btn:focus-visible,
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--gta-primary);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: no-preference) {
  .feat-card:hover,
  .product-neu-card:hover,
  .related-product-card:hover,
  .video-showcase-card:hover {
    transform: translateY(-4px);
  }
}

/* 凹陷拟态容器 (用于搜索框、Logo底座、选项槽) */
.neu-inset {
  background: var(--bg-inset);
  box-shadow: var(--neu-shadow-sunken);
  border: 1px solid rgba(0, 0, 0, 0.4);
  border-radius: 14px;
}

/* 拟态交互按钮 */
.neu-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  background: var(--bg-surface-elevated);
  box-shadow: var(--neu-shadow-button);
  border: var(--neu-border);
  transition: transform var(--trans-fast), color var(--trans-fast), border-color var(--trans-fast), background-color var(--trans-fast);
  user-select: none;
}

.neu-btn:hover {
  transform: translateY(-2px);
  box-shadow: 6px 8px 20px rgba(0, 0, 0, 0.5), -3px -3px 10px rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--text-pure);
}

.neu-btn:active {
  transform: translateY(1px);
  box-shadow: var(--neu-shadow-pressed);
}

/* 发光胶囊按钮 */
.neu-btn-primary {
  background: linear-gradient(135deg, var(--gta-primary), var(--gta-secondary));
  color: #fff;
  box-shadow: 0 4px 18px var(--gta-glow);
  border: 1px solid rgba(255, 255, 255, 0.2);
}
.neu-btn-primary:hover {
  box-shadow: 0 6px 24px rgba(255, 51, 68, 0.5);
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
}

.neu-btn-gold {
  background: linear-gradient(135deg, var(--rdr-primary), var(--rdr-secondary));
  color: #10151f;
  font-weight: 700;
  box-shadow: 0 4px 18px var(--rdr-glow);
  border: 1px solid rgba(255, 255, 255, 0.3);
}
.neu-btn-gold:hover {
  box-shadow: 0 6px 24px rgba(245, 166, 35, 0.5);
  color: #0b0e14;
}

/* 徽章标签 */
.neu-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  background: var(--bg-inset);
  box-shadow: var(--neu-shadow-sunken-sm);
  border: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
}
.neu-badge.is-red {
  color: #ff6b7a;
  border-color: rgba(255, 51, 68, 0.2);
  background: rgba(255, 51, 68, 0.08);
}
.neu-badge.is-gold {
  color: #f7ba53;
  border-color: rgba(245, 166, 35, 0.2);
  background: rgba(245, 166, 35, 0.08);
}
.neu-badge.is-green {
  color: #34d399;
  border-color: rgba(52, 211, 153, 0.2);
  background: rgba(52, 211, 153, 0.08);
}

/* 拟态输入框 */
.neu-input {
  width: 100%;
  background: var(--bg-inset);
  box-shadow: var(--neu-shadow-sunken);
  border: 1px solid rgba(0, 0, 0, 0.6);
  border-radius: 12px;
  padding: 12px 18px;
  color: var(--text-main);
  font-size: 14px;
  transition: border-color var(--trans-fast), box-shadow var(--trans-fast);
}
.neu-input:focus {
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: var(--neu-shadow-sunken), 0 0 10px rgba(255, 255, 255, 0.04);
}
.neu-input::placeholder {
  color: var(--text-dim);
}

/* 顶部通用导航栏 (毛玻璃拟态) */
.neu-navbar {
  position: sticky;
  top: 0;
  width: 100%;
  height: 68px;
  background: rgba(16, 21, 31, 0.96);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
}

.neu-nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  min-width: 0;
}

.neu-brand-title {
  min-width: 0;
}

.neu-brand-name,
.neu-brand-tag,
.neu-nav-item,
.neu-nav-actions .neu-btn {
  white-space: nowrap;
}

.neu-brand-avatar {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--bg-inset);
  box-shadow: var(--neu-shadow-sunken-sm);
  border: 1px solid rgba(255, 255, 255, 0.08);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.neu-brand-avatar img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 2px;
  box-sizing: border-box;
}

.neu-brand-title {
  display: flex;
  flex-direction: column;
}
.neu-brand-name {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--text-pure);
  display: flex;
  align-items: center;
  gap: 6px;
}
.neu-brand-name span {
  font-size: 11px;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--gta-primary), var(--rdr-primary));
  color: #fff;
}
.neu-brand-tag {
  font-size: 11px;
  color: var(--text-muted);
}

.nav-btn-text-short {
  display: none;
}

.neu-nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex: 1 1 auto;
  min-width: 0;
  margin: 0 16px;
}
.neu-nav-item {
  min-width: 0;
  padding: 8px 11px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  transition: transform var(--trans-fast), color var(--trans-fast), border-color var(--trans-fast), background-color var(--trans-fast);
  display: flex;
  align-items: center;
  gap: 6px;
}
.neu-nav-item i,
.neu-nav-item svg {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
}

/* Keep the primary navigation stable between page loads. */
.neu-nav-item:nth-child(-n + 3) {
  width: 112px;
  justify-content: center;
}
.neu-nav-item:nth-child(1) {
  width: 104px;
}
.neu-nav-item:hover, .neu-nav-item.active {
  color: var(--text-pure);
  background: rgba(255, 255, 255, 0.05);
  box-shadow: var(--neu-shadow-sunken-sm);
}

.neu-nav-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex: 0 0 auto;
}

.neu-nav-actions .neu-btn {
  flex: 0 0 auto;
}

/* 响应式断点 */
@media (max-width: 1500px) {
  .neu-navbar {
    padding-left: 20px;
    padding-right: 20px;
  }
  .neu-nav-links {
    margin-left: 10px;
    margin-right: 10px;
  }
  .neu-nav-item {
    padding-left: 8px;
    padding-right: 8px;
    font-size: 13px;
  }
  .neu-nav-item:nth-child(n + 4) {
    display: none;
  }
}

@media (max-width: 980px) {
  .neu-brand-tag {
    display: none;
  }
  .neu-nav-item {
    width: auto;
    min-width: 88px;
    font-size: 12px;
  }
  .neu-nav-links {
    gap: 2px;
  }
}

@media (max-width: 860px) {
  .neu-navbar {
    padding: 0 16px;
    height: 60px;
  }
  .neu-nav-links {
    display: none;
  }
}

@media (max-width: 600px) {
  .neu-navbar {
    padding: 0 12px;
    height: 56px;
  }
  .neu-nav-brand {
    gap: 8px;
  }
  .neu-brand-avatar {
    width: 34px;
    height: 34px;
    border-radius: 10px;
  }
  .neu-brand-name {
    font-size: 13px;
    letter-spacing: 0.2px;
    white-space: nowrap;
  }
  .neu-brand-tag {
    display: none;
  }
  .neu-nav-actions {
    gap: 8px;
  }
  .neu-nav-actions .neu-btn {
    padding: 6px 12px;
    font-size: 12px;
  }
  .neu-btn-primary .nav-btn-text-full {
    display: none;
  }
  .neu-btn-primary .nav-btn-text-short {
    display: inline;
  }
}

@media (max-width: 420px) {
  .neu-navbar {
    padding: 0 10px;
  }
  .neu-brand-name {
    font-size: 12.5px;
  }
  .neu-nav-actions .neu-btn-primary {
    padding: 6px 9px;
    font-size: 11.5px;
  }
  .neu-nav-actions .neu-btn-primary i {
    width: 14px;
    height: 14px;
  }
}

/* ==========================================================================
   浅色拟态模式组件自适应覆写体系
   ========================================================================== */
html[data-theme="light"] body {
  background:
    radial-gradient(rgba(100, 116, 139, 0.14) 1px, transparent 1px),
    radial-gradient(circle at 15% 15%, rgba(220, 38, 38, 0.05) 0%, transparent 45%),
    radial-gradient(circle at 85% 85%, rgba(217, 119, 6, 0.05) 0%, transparent 45%),
    radial-gradient(circle at 50% 50%, #f4f7fb 0%, #e8ecf2 100%);
  background-size: 28px 28px, auto, auto, auto;
  color: var(--text-main);
}

/* 主题切换只过渡可合成的颜色属性，避免整页快照、滤镜和布局重排。 */
html.theme-switching,
html.theme-switching body,
html.theme-switching .neu-card,
html.theme-switching .neu-inset,
html.theme-switching .neu-navbar,
html.theme-switching .mobile-floating-nav,
html.theme-switching .neu-btn,
html.theme-switching input,
html.theme-switching select,
html.theme-switching textarea {
  transition: background-color 180ms ease, color 180ms ease, border-color 180ms ease !important;
}
html.theme-switching body {
  will-change: background-color, color;
}
html.theme-switching .neu-card,
html.theme-switching .neu-navbar,
html.theme-switching .mobile-floating-nav {
  will-change: background-color, box-shadow;
}

@media (prefers-reduced-motion: reduce) {
  html.theme-switching,
  html.theme-switching body,
  html.theme-switching .neu-card,
  html.theme-switching .neu-inset,
  html.theme-switching .neu-navbar,
  html.theme-switching .mobile-floating-nav,
  html.theme-switching .neu-btn,
  html.theme-switching input,
  html.theme-switching select,
  html.theme-switching textarea {
    transition: none !important;
  }
}


html[data-theme="light"] ::-webkit-scrollbar-track {
  background: var(--bg-deep);
}
html[data-theme="light"] ::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border: 2px solid var(--bg-deep);
}
html[data-theme="light"] ::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

html[data-theme="light"] .neu-navbar {
  background: rgba(240, 244, 248, 0.88);
  border-bottom: 1px solid rgba(203, 213, 225, 0.7);
  box-shadow: 0 4px 20px rgba(166, 178, 196, 0.28);
}

html[data-theme="light"] .neu-nav-item:hover,
html[data-theme="light"] .neu-nav-item.active {
  color: var(--text-pure);
  background: rgba(226, 232, 240, 0.8);
  box-shadow: var(--neu-shadow-sunken-sm);
}

html[data-theme="light"] .neu-card {
  border-color: rgba(255, 255, 255, 0.85);
}
html[data-theme="light"] .neu-card:hover {
  border-color: #ffffff;
  box-shadow: var(--neu-shadow-raised-lg);
}

html[data-theme="light"] .neu-inset {
  border: 1px solid rgba(203, 213, 225, 0.55);
}

html[data-theme="light"] .neu-btn:not(.neu-btn-primary):not(.neu-btn-gold) {
  color: var(--text-main);
}
html[data-theme="light"] .neu-btn:not(.neu-btn-primary):not(.neu-btn-gold):hover {
  color: var(--text-pure);
  border-color: #ffffff;
}
html[data-theme="light"] .neu-btn-primary {
  color: #ffffff !important;
}
html[data-theme="light"] .neu-btn-primary:hover {
  color: #ffffff !important;
}
html[data-theme="light"] .neu-btn-gold {
  color: #ffffff !important;
}
html[data-theme="light"] .neu-btn-gold:hover {
  color: #ffffff !important;
}

html[data-theme="light"] .neu-badge {
  background: #e2e8f0;
  color: var(--text-main);
  border-color: rgba(203, 213, 225, 0.7);
}
html[data-theme="light"] .neu-badge.is-red {
  color: #dc2626;
  background: rgba(220, 38, 38, 0.1);
  border-color: rgba(220, 38, 38, 0.25);
}
html[data-theme="light"] .neu-badge.is-gold {
  color: #b45309;
  background: rgba(217, 119, 6, 0.1);
  border-color: rgba(217, 119, 6, 0.25);
}
html[data-theme="light"] .neu-badge.is-green {
  color: #047857;
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.25);
}
html[data-theme="light"] .neu-brand-tag {
  color: var(--text-muted);
}

/* ==========================================================================
   鲁迪乌斯同款 · 丝滑圆形揭幕 (View Transitions Circular Reveal)
   ========================================================================== */
::view-transition,
::view-transition-group(*),
::view-transition-image-pair(*),
::view-transition-old(*),
::view-transition-new(*) {
  pointer-events: none !important;
}
html.theme-vt-reveal::view-transition-group(root),
html.theme-vt-reveal::view-transition-image-pair(root),
html.theme-vt-reveal::view-transition-old(root),
html.theme-vt-reveal::view-transition-new(root) {
  animation: none;
  mix-blend-mode: normal;
  pointer-events: none !important;
}
::view-transition-old(root) {
  z-index: 1;
  pointer-events: none !important;
}
::view-transition-new(root) {
  z-index: 9999;
  pointer-events: none !important;
}
html.theme-vt-reveal .neu-navbar,
html.theme-vt-reveal .mobile-floating-nav {
  view-transition-name: none !important;
}

/* ==========================================================================
   拟态日夜模式切换按钮组件 (.neu-theme-toggle)
   默认遵循日落日出全自动模式，同时支持用户随时手动自由切换深浅色
   ========================================================================== */
.neu-theme-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  min-height: 38px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  background: var(--bg-surface-elevated);
  box-shadow: var(--neu-shadow-button);
  border: var(--neu-border);
  color: var(--text-main);
  transition: transform var(--trans-fast), box-shadow var(--trans-fast), color var(--trans-fast), border-color var(--trans-fast);
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  pointer-events: auto !important;
}

/* 确保内部所有子元素穿透，点击100%命中按钮自身 */
.neu-theme-toggle * {
  pointer-events: none !important;
}

.neu-theme-toggle:hover {
  transform: translateY(-2px);
  box-shadow: var(--neu-shadow-raised);
  color: var(--text-pure);
}

.neu-theme-toggle:active {
  transform: translateY(1px);
  box-shadow: var(--neu-shadow-pressed);
}

.neu-theme-toggle svg {
  width: 17px;
  height: 17px;
  display: block;
  transition: transform 0.45s var(--ease-spring);
  stroke-width: 2.2;
}

.neu-theme-toggle:hover svg {
  transform: rotate(25deg) scale(1.12);
}

.theme-icon-sun {
  color: #f59e0b;
  display: inline-flex;
  align-items: center;
}

.theme-icon-moon {
  color: #6366f1;
  display: inline-flex;
  align-items: center;
}

/* CSS 级防闪烁：无需等待 JS 加载，纯 CSS 即可精准控制图标显示 */
html[data-theme="dark"] .neu-theme-toggle .theme-icon-moon {
  display: inline-flex !important;
}
html[data-theme="dark"] .neu-theme-toggle .theme-icon-sun {
  display: none !important;
}
html[data-theme="dark"] .neu-theme-toggle .theme-text-dark {
  display: inline !important;
}
html[data-theme="dark"] .neu-theme-toggle .theme-text-light {
  display: none !important;
}
html[data-theme="light"] .neu-theme-toggle .theme-icon-sun {
  display: inline-flex !important;
}
html[data-theme="light"] .neu-theme-toggle .theme-icon-moon {
  display: none !important;
}
html[data-theme="light"] .neu-theme-toggle .theme-text-light {
  display: inline !important;
}
html[data-theme="light"] .neu-theme-toggle .theme-text-dark {
  display: none !important;
}

/* 自动模式（按日出日落）文本展示 */
.theme-text-auto {
  display: none;
}
html[data-theme-mode="auto"] .neu-theme-toggle .theme-text-auto {
  display: inline !important;
}
html[data-theme-mode="auto"] .neu-theme-toggle .theme-text-dark,
html[data-theme-mode="auto"] .neu-theme-toggle .theme-text-light {
  display: none !important;
}

.theme-toggle-text {
  min-width: 28px;
  font-size: 12px;
  letter-spacing: 0.2px;
  text-align: center;
  white-space: nowrap;
}

/* 主题按钮：固定尺寸、图标滑入和微光反馈，避免文字切换造成布局抖动。 */
.neu-theme-toggle {
  isolation: isolate;
  min-width: 92px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--bg-surface-elevated), var(--bg-surface));
}
.neu-theme-toggle::before {
  content: "";
  position: absolute;
  inset: 3px;
  z-index: -1;
  border-radius: 9px;
  opacity: 0;
  background: radial-gradient(circle at 28% 50%, rgba(245, 185, 66, 0.2), transparent 48%);
  transform: translateX(-18px);
  transition: opacity 180ms ease, transform 240ms var(--ease-spring);
}
.neu-theme-toggle.is-light::before,
.neu-theme-toggle.is-auto::before {
  opacity: 1;
  transform: translateX(0);
}
.neu-theme-toggle.is-dark::before {
  background: radial-gradient(circle at 72% 50%, rgba(99, 102, 241, 0.22), transparent 48%);
  opacity: 1;
  transform: translateX(0);
}
.neu-theme-toggle .theme-icon-sun,
.neu-theme-toggle .theme-icon-moon {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  justify-content: center;
  transition: transform 240ms var(--ease-spring), opacity 160ms ease;
}
.neu-theme-toggle.is-light .theme-icon-sun,
.neu-theme-toggle.is-auto .theme-icon-sun {
  transform: rotate(18deg) scale(1.06);
}
.neu-theme-toggle.is-dark .theme-icon-moon {
  transform: rotate(-12deg) scale(1.06);
}
.neu-theme-toggle.theme-pulse {
  animation: theme-toggle-pulse 260ms var(--ease-spring);
}
@keyframes theme-toggle-pulse {
  0% { transform: translateY(0) scale(1); }
  45% { transform: translateY(-1px) scale(1.035); }
  100% { transform: translateY(0) scale(1); }
}
html.theme-switching .neu-theme-toggle {
  transition: background-color 180ms ease, color 180ms ease, border-color 180ms ease, transform 180ms ease !important;
}

@media (max-width: 600px) {
  .neu-theme-toggle {
    width: 38px;
    min-width: 38px;
    height: 38px;
    min-height: 38px;
    padding: 0;
    border-radius: 12px;
  }
  .theme-toggle-text {
    display: none;
  }
}

/* ==========================================================================
   移动端通用拟态沉浸式底部悬浮导航栏 (.mobile-floating-nav)
   仅在移动端屏幕 (<= 860px) 显示，为手机用户提供单手高效全局导航
   ========================================================================== */
.mobile-floating-nav {
  display: none;
}

@media (max-width: 860px) {
  body {
    padding-bottom: calc(78px + env(safe-area-inset-bottom, 0px));
  }

  .mobile-floating-nav {
    display: flex;
    position: fixed;
    bottom: calc(12px + env(safe-area-inset-bottom, 0px));
    left: 14px;
    right: 14px;
    margin: 0 auto;
    max-width: 440px;
    height: 58px;
    align-items: center;
    justify-content: space-around;
    padding: 4px 6px calc(4px + env(safe-area-inset-bottom, 0px));
    border-radius: 20px;
    background: rgba(16, 21, 31, 0.97);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.55), 0 0 16px rgba(220, 38, 38, 0.12);
    z-index: 10000;
    touch-action: manipulation;
    user-select: none;
    -webkit-user-select: none;
  }

  html[data-theme="light"] .mobile-floating-nav {
    background: rgba(246, 248, 252, 0.94);
    border: 1px solid rgba(255, 255, 255, 0.9);
    box-shadow: 0 12px 30px rgba(166, 178, 196, 0.45), 0 2px 8px rgba(0, 0, 0, 0.04);
  }

  .mobile-nav-tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    height: 48px;
    padding: 2px 0;
    border-radius: 14px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.2px;
    transition: color var(--trans-fast), background var(--trans-fast), transform var(--trans-fast);
    -webkit-tap-highlight-color: transparent;
  }

  .mobile-nav-tab i,
  .mobile-nav-tab svg {
    width: 20px;
    height: 20px;
    margin-bottom: 2px;
    stroke-width: 2;
    transition: transform var(--trans-fast);
  }

  .mobile-nav-tab:active {
    transform: scale(0.94);
  }

  .mobile-nav-tab.active {
    color: #ef4444;
    background: rgba(220, 38, 38, 0.12);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.35);
  }

  html[data-theme="light"] .mobile-nav-tab.active {
    color: #dc2626;
    background: rgba(220, 38, 38, 0.08);
    box-shadow: inset 0 2px 4px rgba(166, 178, 196, 0.4);
  }

  .mobile-nav-tab.tab-faka {
    color: #d97706;
  }

  .mobile-nav-tab.tab-faka.active,
  .mobile-nav-tab.tab-faka:hover {
    color: #f59e0b;
    background: rgba(217, 119, 6, 0.14);
  }

  html[data-theme="light"] .mobile-nav-tab.tab-faka {
    color: #b45309;
  }
}

/* 菜单交互式 UI 全局徽章 */
.card-interactive-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 6px;
  background: linear-gradient(135deg, rgba(125, 107, 255, 0.22), rgba(76, 165, 255, 0.16));
  color: #a6b8ff;
  border: 1px solid rgba(125, 107, 255, 0.4);
  box-shadow: 0 0 10px rgba(125, 107, 255, 0.2);
}
html[data-theme="light"] .card-interactive-badge {
  background: linear-gradient(135deg, rgba(125, 107, 255, 0.14), rgba(76, 165, 255, 0.1));
  color: #4a43b8;
  border-color: rgba(125, 107, 255, 0.35);
}