/* ==========================================================================
   幸运小飞 · 样式（Material Design 3）
   --------------------------------------------------------------------------
   颜色变量由 assets/theme.js 在每次访问时随机生成后注入 <html>；
   下方 :root 仅为禁用 JS 时的兜底深色方案。
   ========================================================================== */

:root {
  /* —— JS 禁用时的兜底配色（深色） —— */
  --primary: #5eeaa8;
  --on-primary: #00382a;
  --primary-container: #00513c;
  --on-primary-container: #8ff3cd;
  --secondary-container: #33453f;
  --on-secondary-container: #cfe9dd;
  --tertiary: #7fd0ff;
  --tertiary-container: #00405c;
  --on-tertiary-container: #c4e7ff;
  --surface: #0f1512;
  --surface-low: #151d19;
  --surface-c: #1a2420;
  --surface-high: #24302b;
  --surface-highest: #2f3c36;
  --on-surface: #e0e5e1;
  --on-surface-var: #a8b5ae;
  --outline: #78877f;
  --outline-var: #3a463f;
  --error: #f2b8b5;

  /* —— 形状与动效 —— */
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 22px;
  --r-full: 999px;
  --ease: cubic-bezier(.2, .8, .2, 1);
  --t: .25s;

  color-scheme: dark;
}

html.light { color-scheme: light; }

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto,
               'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--surface);
  color: var(--on-surface);
  line-height: 1.65;
  min-height: 100dvh;
  overflow-x: hidden;
  transition: background-color var(--t) var(--ease), color var(--t) var(--ease);
}

::selection { background: var(--primary); color: var(--on-primary); }

a { color: var(--primary); }

button { font-family: inherit; }

/* ---------- 粒子画布 ---------- */
#particles-js { position: fixed; inset: 0; z-index: 0; }

/* ---------- 布局 ---------- */
.shell {
  position: relative;
  z-index: 1;
  width: min(100% - 2rem, 1060px);
  margin-inline: auto;
  padding-block: clamp(1.25rem, 4vw, 2.5rem) 3rem;
}

/* ---------- 主题切换按钮 ---------- */
.theme-toggle {
  position: fixed;
  top: max(14px, env(safe-area-inset-top));
  right: max(14px, env(safe-area-inset-right));
  z-index: 50;
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border: 1px solid var(--outline-var);
  border-radius: var(--r-full);
  background: var(--surface-c);
  color: var(--primary);
  cursor: pointer;
  transition: transform var(--t) var(--ease), background var(--t) var(--ease);
}
.theme-toggle:hover { background: var(--surface-high); transform: rotate(25deg); }
.theme-toggle:active { transform: scale(.9); }
.theme-toggle svg { display: block; }

/* ---------- 头部 ---------- */
.brand { display: flex; align-items: center; gap: clamp(10px, 2vw, 16px); flex-wrap: wrap; }
.brand-logo {
  width: clamp(52px, 9vw, 64px);
  height: clamp(52px, 9vw, 64px);
  border-radius: 30%;
  object-fit: cover;
  box-shadow: 0 0 0 2px var(--primary), 0 10px 24px rgb(0 0 0 / .35);
}
.brand h1 {
  font-size: clamp(1.4rem, 4vw, 1.9rem);
  font-weight: 800;
  letter-spacing: .5px;
  background: linear-gradient(120deg, var(--primary), var(--tertiary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.tagline { color: var(--on-surface-var); margin: 12px 0 22px; font-size: clamp(.9rem, 2.5vw, 1rem); }

/* ---------- 搜索框（MD3 搜索栏） ---------- */
.search {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 6px 6px 6px 18px;
  background: var(--surface-c);
  border: 1px solid var(--outline-var);
  /* 与下方卡片同圆角（22px），内层元素用 16px，形成同心圆角 */
  border-radius: var(--r-lg);
  transition: border-color var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.search:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px color-mix(in oklch, var(--primary) 22%, transparent);
}
.search input {
  flex: 1 1 220px;
  min-width: 0;
  border: none; background: none; outline: none;
  color: var(--on-surface);
  font-size: 15px;
  padding: 10px 0;
}
.search input::placeholder { color: var(--on-surface-var); }
.search select {
  appearance: none;
  -webkit-appearance: none;
  border: none;
  border-radius: var(--r-md);
  background: var(--surface-high)
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='none' stroke='%239aa5a0' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round' d='M1 1.5 6 6.5 11 1.5'/%3E%3C/svg%3E")
    no-repeat right 12px center;
  color: var(--on-surface);
  font-size: 14px;
  padding: 9px 32px 9px 14px;
  cursor: pointer;
}
.search select option { background: var(--surface-low); color: var(--on-surface); }
.search button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: none;
  border-radius: var(--r-md);
  background: var(--primary);
  color: var(--on-primary);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 18px;
  cursor: pointer;
  transition: filter var(--t) var(--ease), transform var(--t) var(--ease);
}
.search button:hover { filter: brightness(1.1); transform: translateY(-1px); }
.search button:active { transform: translateY(0) scale(.96); }
.search button svg { display: block; }

/* ---------- 页面导航（MD3 分段控件） ---------- */
.nav {
  display: flex;
  gap: 4px;
  margin: 22px 0 26px;
  padding: 5px;
  background: var(--surface-c);
  border-radius: var(--r-full);
  width: max-content;
  max-width: 100%;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav::-webkit-scrollbar { display: none; }
.nav-item {
  border: none;
  background: none;
  cursor: pointer;
  padding: 9px 18px;
  border-radius: var(--r-full);
  color: var(--on-surface-var);
  font-size: 14px;
  white-space: nowrap;
  transition: color var(--t) var(--ease), background var(--t) var(--ease);
}
.nav-item:hover { color: var(--on-surface); }
.nav-item.active { background: var(--primary); color: var(--on-primary); font-weight: 600; }

/* ---------- 页面切换 ---------- */
.page { display: none; }
.page.active { display: block; animation: fade-up .35s var(--ease); }
@keyframes fade-up {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}

.page-title { font-size: clamp(1.25rem, 3.5vw, 1.5rem); font-weight: 700; margin-bottom: 6px; }
.page-sub { color: var(--on-surface-var); font-size: 14px; margin-bottom: 18px; }

/* ---------- 链接卡片 ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
  gap: 12px;
}
.card {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: var(--surface-c);
  border: 1px solid var(--outline-var);
  border-radius: var(--r-lg);
  cursor: pointer;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease), border-color var(--t) var(--ease);
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--primary);
  box-shadow: 0 10px 24px rgb(0 0 0 / .22);
}
.card:active { transform: translateY(-1px) scale(.99); }
.card:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
/* 状态层（MD3 state layer） */
.card::after {
  content: '';
  position: absolute; inset: 0;
  background: var(--on-surface);
  opacity: 0;
  transition: opacity var(--t) var(--ease);
  pointer-events: none;
}
.card:hover::after { opacity: .05; }

.card-body { min-width: 0; }
.card-title { display: block; font-weight: 600; color: var(--primary); margin-bottom: 2px; }
.card-desc { font-size: 13px; color: var(--on-surface-var); }

/* 卡片小图标：主 / 辅助 / 第三 容器色轮换 */
.favicon {
  --fav-bg: var(--primary-container);
  --fav-fg: var(--on-primary-container);
  flex-shrink: 0;
  width: 46px; height: 46px;
  border-radius: 14px;
  display: grid; place-items: center;
  background: var(--fav-bg);
  color: var(--fav-fg);
  font-size: 15px;
  font-weight: 700;
}
.card:nth-child(3n+2) .favicon { --fav-bg: var(--secondary-container); --fav-fg: var(--on-secondary-container); }
.card:nth-child(3n+3) .favicon { --fav-bg: var(--tertiary-container); --fav-fg: var(--on-tertiary-container); }

/* 点击涟漪 */
.ripple {
  position: absolute;
  border-radius: 50%;
  transform: scale(0);
  pointer-events: none;
  background: currentColor;
  opacity: .22;
  animation: ripple .6s var(--ease) forwards;
}
@keyframes ripple {
  to { transform: scale(1); opacity: 0; }
}

/* ---------- 分类标签（MD3 过滤芯片） ---------- */
.tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.tab {
  border: 1px solid var(--outline-var);
  background: none;
  cursor: pointer;
  padding: 7px 16px;
  border-radius: var(--r-full);
  color: var(--on-surface-var);
  font-size: 13px;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease), background var(--t) var(--ease);
}
.tab:hover { color: var(--on-surface); border-color: var(--primary); }
.tab.active {
  background: var(--secondary-container);
  color: var(--on-secondary-container);
  border-color: transparent;
  font-weight: 600;
}
.cats { display: none; }
.cats.active { display: block; }

/* ---------- 社交图标 ---------- */
.socials { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 8px; }
.social {
  position: relative;
  width: 46px; height: 46px;
  border-radius: var(--r-full);
  display: grid; place-items: center;
  background: var(--surface-c);
  border: 1px solid var(--outline-var);
  color: var(--on-surface);
  cursor: pointer;
  transition: transform var(--t) var(--ease), color var(--t) var(--ease), border-color var(--t) var(--ease);
}
.social:hover { color: var(--primary); border-color: var(--primary); transform: translateY(-3px); }
.social svg { width: 22px; height: 22px; display: block; }
.qr {
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  translate: -50% 0;
  padding: 8px;
  background: var(--surface-low);
  border: 1px solid var(--outline-var);
  border-radius: var(--r-md);
  box-shadow: 0 10px 28px rgb(0 0 0 / .35);
  opacity: 0;
  scale: .9;
  pointer-events: none;
  transition: opacity var(--t) var(--ease), scale var(--t) var(--ease);
  z-index: 5;
}
.social:hover .qr,
.social:focus-within .qr,
.social.show-qr .qr { opacity: 1; scale: 1; }
.qr img { width: 128px; height: 128px; display: block; border-radius: 8px; }

/* ---------- 页脚信息 ---------- */
.info {
  margin-top: 34px;
  padding-top: 18px;
  border-top: 1px solid var(--outline-var);
  color: var(--on-surface-var);
  font-size: 13px;
  display: grid;
  gap: 4px;
}
.email-link { color: var(--primary); cursor: pointer; font-weight: 600; }
.email-link:hover { text-decoration: underline; }

/* ---------- 微信 / QQ 内置浏览器引导层 ---------- */
.guide {
  position: fixed; inset: 0;
  z-index: 100;
  display: none;
  place-items: center;
  padding: 20px;
  background: rgb(0 0 0 / .72);
  backdrop-filter: blur(6px);
}
.guide.show { display: grid; }
.guide-card {
  width: min(100%, 420px);
  background: var(--surface-low);
  border: 1px solid var(--outline-var);
  border-radius: var(--r-lg);
  padding: 26px 24px;
  text-align: center;
  box-shadow: 0 24px 60px rgb(0 0 0 / .5);
}
.guide-card h2 { color: var(--primary); font-size: 18px; margin-bottom: 8px; }
.guide-card p { color: var(--on-surface-var); font-size: 13px; }
.guide-url {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 16px 0;
  padding: 6px 6px 6px 14px;
  background: var(--surface-c);
  border-radius: var(--r-full);
  font-size: 13px;
}
.guide-url span {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--on-surface-var);
  text-align: left;
}
.guide-url button {
  border: none;
  border-radius: var(--r-full);
  background: var(--primary);
  color: var(--on-primary);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 14px;
  cursor: pointer;
  white-space: nowrap;
}
.guide-browsers {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin: 18px 0 6px;
  color: var(--on-surface-var);
  font-size: 12px;
}
.guide-browsers > div { display: grid; justify-items: center; gap: 6px; }
.guide-browsers svg { width: 34px; height: 34px; color: var(--primary); }

/* ---------- 关于页（friends.md 渲染区） ---------- */
.md { max-width: 760px; }
.md-loading { color: var(--on-surface-var); }
.md h1, .md h2, .md h3, .md h4 {
  color: var(--primary);
  margin: 22px 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--outline-var);
  line-height: 1.4;
}
.md h1 { font-size: 24px; }
.md h2 { font-size: 20px; }
.md h3 { font-size: 17px; }
.md h4 { font-size: 15px; }
.md p { margin-bottom: 14px; }
.md ul, .md ol { margin: 0 0 14px; padding-left: 24px; }
.md li { margin-bottom: 6px; }
.md a {
  color: var(--primary);
  text-decoration: none;
  border-bottom: 1px dashed color-mix(in oklch, var(--primary) 55%, transparent);
}
.md a:hover { border-bottom-style: solid; }
.md img { max-width: 100%; border-radius: var(--r-md); margin: 16px 0; }
.md code {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  background: var(--surface-high);
  padding: 2px 6px;
  border-radius: 6px;
  font-size: .9em;
}
.md pre {
  background: var(--surface-c);
  border: 1px solid var(--outline-var);
  padding: 14px 16px;
  border-radius: var(--r-md);
  overflow-x: auto;
  margin: 0 0 14px;
}
.md pre code { background: none; padding: 0; }
.md blockquote {
  border-left: 3px solid var(--primary);
  padding: 4px 0 4px 14px;
  margin: 0 0 14px;
  color: var(--on-surface-var);
}
.md hr { border: none; border-top: 1px solid var(--outline-var); margin: 22px 0; }
.md table { width: 100%; border-collapse: collapse; margin-bottom: 14px; font-size: 14px; }
.md th, .md td { border: 1px solid var(--outline-var); padding: 8px 10px; text-align: left; }
.md th { background: var(--surface-c); }

/* ---------- 404 页 ---------- */
.err {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 24px;
}
.err-code {
  font-size: clamp(4.5rem, 18vw, 8rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: 2px;
  background: linear-gradient(120deg, var(--primary), var(--tertiary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.err-text { color: var(--on-surface-var); margin: 14px 0 24px; }
.err-home {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: var(--r-full);
  background: var(--primary);
  color: var(--on-primary);
  text-decoration: none;
  font-weight: 600;
  transition: filter var(--t) var(--ease), transform var(--t) var(--ease);
}
.err-home:hover { filter: brightness(1.1); transform: translateY(-2px); }

/* ---------- 响应式 ---------- */
@media (max-width: 640px) {
  .shell { width: min(100% - 1.25rem, 1060px); }

  /* 手机：搜索框独占一行，引擎 + 按钮并在下一行，拆掉大胶囊容器 */
  .search {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
    padding: 0;
    background: none;
    border: none;
    border-radius: 0;
  }
  .search:focus-within { border-color: transparent; box-shadow: none; }
  .search input {
    grid-column: 1 / -1;
    flex: none;
    width: 100%;
    padding: 13px 16px;
    font-size: 16px;               /* 16px 可避免 iOS 聚焦时自动放大 */
    background: var(--surface-c);
    border: 1px solid var(--outline-var);
    border-radius: var(--r-md);
    transition: border-color var(--t) var(--ease), box-shadow var(--t) var(--ease);
  }
  .search input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px color-mix(in oklch, var(--primary) 22%, transparent);
  }
  .search select {
    width: 100%;
    min-width: 0;
    height: 46px;
    padding: 0 32px 0 14px;
    background-color: var(--surface-c);
    border: 1px solid var(--outline-var);
    border-radius: var(--r-md);
  }
  .search button {
    height: 46px;
    padding: 0 20px;
    border-radius: var(--r-md);
  }

  .grid { gap: 10px; }
  .card { padding: 12px 14px; }
  .qr img { width: 108px; height: 108px; }
  .socials { gap: 10px; }
}

/* 超小屏：搜索按钮与引擎仍保持一行，按钮收窄一点 */
@media (max-width: 360px) {
  .search button { padding: 0 14px; }
  .search select { font-size: 13px; }
}

/* ---------- 内容型 Markdown 页（小飞相关 / tvbox，由 me/tvbox.md 渲染） ---------- */
#tvbox-content { max-width: 820px; }

.doc-title {
  font-size: clamp(26px, 6vw, 38px); font-weight: 800;
  margin: 6px 0 6px;
  background: linear-gradient(120deg, var(--primary), var(--tertiary));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.intro { margin: 0 0 20px; }
.intro p { margin: 0 0 8px; font-size: 15px; line-height: 1.7; color: var(--on-surface-var); }

.block {
  background: var(--surface-c);
  border: 1px solid var(--outline-var);
  border-radius: var(--r-lg);
  padding: 18px 18px 20px;
  margin: 14px 0;
}
.block h2 {
  font-size: 18px; font-weight: 700; margin: 0 0 10px;
  display: flex; align-items: center; gap: 8px;
}
.block h2::before {
  content: ""; width: 4px; height: 18px; border-radius: 4px;
  background: var(--primary);
}
.block p { margin: 8px 0; font-size: 14.5px; line-height: 1.7; }
.block a { color: var(--primary); word-break: break-all; }
.block blockquote {
  margin: 8px 0;
  color: var(--on-surface-var); font-size: 13.5px; line-height: 1.7;
  background: var(--surface-high);
  border-radius: 12px; padding: 8px 12px;
}
.block blockquote p { margin: 0; font-size: 13.5px; }
.block ul { margin: 8px 0; padding-left: 20px; font-size: 14.5px; line-height: 1.8; }
.block h3 { font-size: 15px; font-weight: 700; margin: 16px 0 6px; }
.block code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12.5px; padding: 3px 7px; border-radius: 8px;
  background: var(--surface-high); color: var(--on-surface);
}
.block hr { border: none; border-top: 1px solid var(--outline-var); margin: 16px 0; }
.block small { color: var(--on-surface-var); font-size: 12.5px; }

/* 可点击复制 / 打开的地址条 */
.src {
  display: inline-flex; align-items: center; gap: 10px;
  max-width: 100%; margin-top: 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13.5px; text-align: left; word-break: normal;
  color: var(--primary); text-decoration: none;
  padding: 10px 12px 10px 14px; border-radius: 12px;
  background: var(--primary-container);
  border: 1px solid var(--outline-var);
  cursor: pointer; user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: filter .15s ease, transform .12s ease;
}
.src:hover { filter: brightness(1.08); }
.src:active { transform: scale(.985); }
.src:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.src .ico { flex: 0 0 auto; opacity: .8; }
.src .txt { min-width: 0; overflow-wrap: anywhere; }
.src .tag {
  flex: 0 0 auto; font-family: inherit; font-size: 11.5px;
  padding: 3px 8px; border-radius: 999px; white-space: nowrap;
  color: var(--on-secondary-container);
  background: var(--secondary-container);
  transition: background .15s ease, color .15s ease;
}
.src.copied { filter: brightness(1.03); }
.src.copied .tag {
  color: var(--on-tertiary-container);
  background: var(--tertiary-container);
}

.pwd {
  display: inline-block; margin-top: 8px;
  font-size: 13px; color: var(--on-surface);
  background: var(--secondary-container);
  padding: 6px 12px; border-radius: 999px;
}

.q {
  display: flex; align-items: flex-start; gap: 8px;
  margin: 18px 0 6px;
  font-size: 14.5px; line-height: 1.6; font-weight: 600;
}
.faq-num {
  flex: 0 0 auto;
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 22px; height: 22px; padding: 0 6px;
  border-radius: 999px; background: var(--primary);
  color: var(--on-primary); font-size: 13px; font-weight: 700;
  margin-top: 1px;
}

/* 通用复制提示 */
.toast {
  position: fixed; left: 50%; bottom: 32px; z-index: 60;
  transform: translate(-50%, 12px);
  padding: 10px 18px; border-radius: 999px;
  font-size: 13.5px; color: var(--inverse-on-surface);
  background: var(--inverse-surface);
  box-shadow: 0 6px 24px rgb(0 0 0 / .28);
  opacity: 0; pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 640px) {
  /* 长地址：复制标签贴右上，避免卡在断行文字旁边 */
  .src { display: flex; align-items: flex-start; width: 100%; }
  .src .tag { margin-left: auto; margin-top: 1px; }
}

/* ---------- 减少动态效果偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}