/* ========== 全局字体设置 ========== */
@font-face {
  font-family: 'MiSans';
  src: url('source/font/MiSans VF.ttf') format('truetype');
  font-weight: 100 900; /* 支持可变字重 */
  font-style: normal;
  font-display: swap;
}

/* 强制全站使用 MiSans */
* {
  font-family: 'MiSans', sans-serif !important;
}

/* ========== 全局基础 ========== */
:root{
  --nav-height: 68px; /* 底栏高度，用于预留滚动空间 */
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, sans-serif;
  margin: 0;
  padding: 0;
  color: #111;
  opacity: 0;
  transition: opacity 0.8s ease;
  background: #fdfdfd;
  overflow-x: hidden;
}
@media (prefers-color-scheme: dark) {
  body { background: #111; color: #f5f5f5; }
  .contact-card {
    background: rgba(30,30,30,0.35);
    border: 1px solid rgba(255,255,255,0.12);
    box-shadow: 0 18px 40px rgba(0,0,0,0.5);
  }
  .contact-card:hover { background: rgba(40,40,40,0.5); }
  footer { background: rgba(30,30,30,0.5); color: #aaa; }
}

/* 预留底部导航栏空间（避免内容被遮挡） */
body{
  padding-bottom: calc(var(--nav-height) + env(safe-area-inset-bottom, 0px) + 18px);
}

/* 背景动态渐变 */
body::before {
  content: "";
  position: fixed;
  top: 50%; left: 50%;
  width: 160%; height: 160%;
  transform: translate(-50%, -50%);
  background: linear-gradient(120deg, #00FFCC, #FFE92C, #00FFCC);
  background-size: 300% 300%;
  animation: bgMove 18s ease infinite;
  filter: blur(100px);
  opacity: 0.35;
  border-radius: 50%;
  z-index: -1;
}
@keyframes bgMove {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* ========== 页面切换动画（作用于 .page） ========== */
.page { will-change: transform, opacity; }

.page.slide-out-left  { animation: slideOutLeft  0.5s ease forwards; }
.page.slide-out-right { animation: slideOutRight 0.5s ease forwards; }
.page.slide-in-left   { animation: slideInLeft   0.5s ease forwards; }
.page.slide-in-right  { animation: slideInRight  0.5s ease forwards; }

@keyframes slideOutLeft  { from{transform:translateX(0);   opacity:1;} to{transform:translateX(-30%); opacity:0;} }
@keyframes slideOutRight { from{transform:translateX(0);   opacity:1;} to{transform:translateX(30%);  opacity:0;} }
@keyframes slideInLeft   { from{transform:translateX(-30%);opacity:0;} to{transform:translateX(0);    opacity:1;} }
@keyframes slideInRight  { from{transform:translateX(30%); opacity:0;} to{transform:translateX(0);    opacity:1;} }

/* ========== Header ========== */
header {
  text-align: center;
  padding: 100px 20px 60px;
  animation: fadeDown 1.2s ease forwards;
  opacity: 0;
}
@keyframes fadeDown {
  from { transform: translateY(-40px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

/* 标题和 Logo 一行显示 */
.title-row {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}
.title-row h1 {
  margin: 0;
  font-size: 2.4rem;
  font-weight: 700;
}
.title-row img {
  max-height: 80px;
  width: auto;
  margin: 0;
  filter: drop-shadow(0 6px 14px rgba(0,0,0,0.15));
}

/* ========== Section 通用 ========== */
section { padding: 20px; max-width: 960px; margin: auto; text-align: center; }
section p { font-size: 1.1rem; line-height: 1.6; margin: 8px 0; opacity: 0; animation: fadeUp 1.2s ease forwards; }
section p:nth-of-type(1){ animation-delay: 0.6s; }
section p:nth-of-type(2){ animation-delay: 0.9s; }
h2 { font-size: 1.6rem; margin: 20px 0 30px; opacity: 0; animation: fadeUp 1.2s ease forwards; animation-delay: 0.4s; }
@keyframes fadeUp { from{opacity:0; transform:translateY(20px);} to{opacity:1; transform:translateY(0);} }

/* ========== 卡片布局 ========== */
.contact-wrapper, .lang-wrapper { display: grid; gap: 18px; margin-top: 30px; }
.contact-wrapper { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.lang-wrapper { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); justify-items: center; }

/* ✨ 卡片液态玻璃效果 */
.contact-card {
  display: flex; align-items: center; gap: 14px;
  min-width: 260px; max-width: 420px; padding: 20px 18px;
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  backdrop-filter: blur(24px) saturate(180%);
  background: rgba(255, 255, 255, 0.28);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 18px;
  box-shadow: 0 12px 32px rgba(0,0,0,0.12), inset 0 0 20px rgba(255,255,255,0.08);
  text-decoration: none; color: inherit;
  opacity: 0; transform: translateY(40px) translateX(-20px) scale(0.96);
  position: relative;
  overflow: hidden;
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.45s cubic-bezier(0.22, 1, 0.36, 1),
              background 0.5s ease;
  will-change: transform, box-shadow;
}
.contact-card.visible { animation: staggerFade 0.8s ease forwards; }
@keyframes staggerFade {
  from { opacity: 0; transform: translateY(40px) translateX(-20px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) translateX(0) scale(1); }
}

/* 🌊 光泽扫过效果 */
.contact-card::after {
  content: "";
  position: absolute;
  top: 0; left: -150%;
  width: 150%; height: 100%;
  background: linear-gradient(120deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.35) 50%, rgba(255,255,255,0.05) 100%);
  transform: skewX(-20deg);
  transition: all 0.8s ease;
  opacity: 0;
}
.contact-card:hover::after {
  left: -20%;
  opacity: 1;
}

/* 悬停时：浮起 + 微倾 */
.contact-card:hover {
  transform: translateY(-10px) scale(1.03) rotate3d(1,1,0,0.8deg);
  box-shadow: 0 32px 70px rgba(0,0,0,0.2);
  background: rgba(255,255,255,0.45);
  -webkit-backdrop-filter: blur(28px) saturate(220%);
  backdrop-filter: blur(28px) saturate(220%);
}
.contact-card:active { transform: scale(0.96); }

/* Icon */
.icon { width: 40px; height: 40px; display:inline-flex; align-items:center; justify-content:center;
        border-radius:12px; background:linear-gradient(135deg,#e8f0fe,#ffffff);
        box-shadow:inset 0 0 0 1px rgba(255,255,255,0.4);
        flex-shrink:0; transition: transform 0.4s ease, background 0.5s ease; }
.icon svg{width:22px;height:22px;stroke:#0a66c2;stroke-width:2;fill:none;}
.icon img{width:22px;height:22px;}
.text{display:flex;flex-direction:column;text-align:left;}
.label{font-size:12px;color:#666;}
.value{font-size:15px;font-weight:600;color:#111;}

/* 渐变 paw */
.paw-pink   { background: linear-gradient(135deg, #ff9a9e, #fad0c4); -webkit-background-clip:text; color:transparent; }
.paw-purple { background: linear-gradient(135deg, #a18cd1, #fbc2eb); -webkit-background-clip:text; color:transparent; }
.paw-cyan   { background: linear-gradient(135deg, #43e97b, #38f9d7); -webkit-background-clip:text; color:transparent; }

/* ========== Footer ========== */
footer{text-align:center;padding:30px 10px;margin-top:60px;font-size:13px;color:#666;background:rgba(255,255,255,0.6);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);}

/* ========== iOS 风格提示 & 弹窗 ========== */
.copied-tip {
  position: fixed;
  bottom: calc(var(--nav-height) + env(safe-area-inset-bottom, 0px) + 30px);
  left: 50%;
  transform: translateX(-50%) translateY(20px) scale(0.95);
  padding: 12px 20px;
  border-radius: 16px;
  font-size: 15px;
  font-weight: 500;
  background: rgba(255,255,255,0.25);
  color: #111;
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  backdrop-filter: blur(18px) saturate(180%);
  box-shadow: 0 8px 28px rgba(0,0,0,0.2), inset 0 0 20px rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  opacity: 0;
  pointer-events: none;
  z-index: 9999;
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.copied-tip.show { opacity: 1; transform: translateX(-50%) translateY(0) scale(1.05); }
.copied-tip.show.done { transform: translateX(-50%) translateY(0) scale(1); }
@media (prefers-color-scheme: dark) {
  .copied-tip { background: rgba(30,30,30,0.45); color: #fff; }
}

/* 通用遮罩 */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.35);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
  z-index: 9998;
}
.overlay.show { opacity: 1; pointer-events: auto; }

/* 通用模态框 */
.modal {
  position: fixed;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  background: rgba(255,255,255,0.3);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  backdrop-filter: blur(24px) saturate(180%);
  border-radius: 20px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.25);
  padding: 20px;
  text-align: center;
  opacity: 0;
  pointer-events: none;
  transition: all 0.4s cubic-bezier(0.22, 1.4, 0.36, 1);
  z-index: 9999;
}
.modal.show {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
  pointer-events: auto;
}

/* iOS 弹窗（复用 .modal） */
.ios-alert {
  width: 300px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.25);
  box-shadow: 0 12px 40px rgba(0,0,0,0.25), inset 0 0 30px rgba(255,255,255,0.12);
}
.ios-alert p { margin: 0 0 14px; font-size: 15px; font-weight: 500; color: #111; }

/* iOS 弹窗按钮：竖直堆叠 + 胶囊形状 */
.ios-alert .actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
  border-top: none;
}
.ios-alert button {
  padding: 12px 0;
  font-size: 15px;
  font-weight: 600;
  border: none;
  border-radius: 14px;
  background: rgba(255,255,255,0.6);
  color: #007aff;
  cursor: pointer;
  transition: transform 0.2s ease, filter 0.2s ease, background 0.3s ease;
}
.ios-alert button.cancel { color: #ff3b30; }
.ios-alert button.confirm { color: #007aff; }
.ios-alert button:hover { background: rgba(255,255,255,0.75); }
.ios-alert button:active { transform: scale(0.96); filter: brightness(0.9); }

@media (prefers-color-scheme: dark) {
  .ios-alert button {
    background: rgba(40,40,40,0.6);
    color: #0a84ff;
  }
  .ios-alert button.cancel { color: #ff453a; }
  .ios-alert button:hover { background: rgba(60,60,60,0.75); }
}

/* 📧 邮箱选择弹窗内部样式 */
body#index-page .email-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 10px 0 16px;
}
body#index-page .email-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  border-radius: 12px;
  background: rgba(255,255,255,0.35);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  backdrop-filter: blur(12px) saturate(180%);
}
body#index-page .email-item span { font-size: 14px; font-weight: 500; word-break: break-all; }
body#index-page .email-item button {
  min-width: 60px;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 600;
  border: none;
  border-radius: 999px;
  background: rgba(0,122,255,0.85);
  color: #fff;
  cursor: pointer;
  transition: all 0.3s ease;
  flex-shrink: 0;
  -webkit-backdrop-filter: blur(10px) saturate(180%);
  backdrop-filter: blur(10px) saturate(180%);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15), inset 0 0 8px rgba(255,255,255,0.15);
}
body#index-page .email-item button:hover {
  background: rgba(0,122,255,1);
  box-shadow: 0 6px 16px rgba(0,0,0,0.25), inset 0 0 12px rgba(255,255,255,0.2);
}
body#index-page .email-item button:active { transform: scale(0.95); }
@media (prefers-color-scheme: dark) {
  body#index-page .email-item { background: rgba(30,30,30,0.45); }
  body#index-page .email-item span { color: #fff; }
}

/* 📧 邮箱关闭按钮：修复背景不可见 */
body#index-page .actions {
  display: flex;
  justify-content: center;
  margin-top: 12px;
}
body#index-page .actions .cancel {
  flex: 1;
  padding: 12px 0;
  font-size: 15px;
  font-weight: 600;
  color: #ff3b30;
  background: rgba(255,255,255,0.6);
  border: none;
  border-radius: 14px;
  cursor: pointer;
  transition: transform 0.2s ease, filter 0.2s ease, background 0.3s ease;
}
body#index-page .actions .cancel:hover {
  background: rgba(255,255,255,0.75);
}
body#index-page .actions .cancel:active {
  transform: scale(0.95);
  filter: brightness(0.9);
}
@media (prefers-color-scheme: dark) {
  body#index-page .actions .cancel {
    background: rgba(40,40,40,0.6);
    color: #ff453a;
  }
  body#index-page .actions .cancel:hover {
    background: rgba(60,60,60,0.75);
  }
}

/* 微信二维码弹窗 */
body#index-page .wechat-qr img { width: 240px; height: 240px; border-radius: 12px; }
body#index-page .wechat-qr p { margin-top: 12px; font-size: 15px; font-weight: 600; color: #111; }
@media (prefers-color-scheme: dark) {
  body#index-page .wechat-qr { color: #fff; }
}

/* ========== Apple Liquid Glass 底部导航栏 ========== */
.bottom-nav{
  position: fixed;
  left: 50%;
  bottom: calc(env(safe-area-inset-bottom, 0px) + 12px);
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  width: min(680px, calc(100vw - 24px));
  padding: 10px;
  border-radius: 22px;
  background: rgba(255,255,255,0.28);
  -webkit-backdrop-filter: blur(22px) saturate(180%);
  backdrop-filter: blur(22px) saturate(180%);
  border: 1px solid rgba(255,255,255,0.35);
  box-shadow: 0 18px 40px rgba(0,0,0,0.25), inset 0 0 30px rgba(255,255,255,0.12);
  z-index: 1000;
}
.bottom-nav a{
  flex: 1;
  text-align: center;
  padding: 12px 0;
  border-radius: 14px;
  font-size: 14px;
  font-weight: 600;
  color: #333;
  text-decoration: none;
  transition: background 0.3s ease, color 0.3s ease;
}
.bottom-nav a.active{
  background: rgba(255,255,255,0.6);
  color: #007aff;
}
.bottom-nav a:hover{ background: rgba(255,255,255,0.4); }
@media (prefers-color-scheme: dark){
  .bottom-nav{ background: rgba(30,30,30,0.5); border: 1px solid rgba(255,255,255,0.12); }
  .bottom-nav a{ color: #f0f0f0; }
  .bottom-nav a.active{ background: rgba(255,255,255,0.18); color: #0a84ff; }
}

/* === 底部导航栏（中英文分两行显示） === */
.bottom-nav {
  width: min(320px, calc(100vw - 40px)); /* 缩小整体宽度 */
}

.bottom-nav a {
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1.2;
  padding: 8px 0;
}

.bottom-nav .nav-cn {
  font-size: 15px;
  font-weight: 600;
}

.bottom-nav .nav-en {
  font-size: 12px;
  opacity: 0.7;
}


/* ===================== iOS-like parallel page transitions (3 pages) ===================== */
.page { will-change: transform, opacity; transform: translateZ(0); }

/* Exit current page */
@keyframes slideOutToLeft {
  from { transform: translateX(0); opacity: 1; filter: blur(0); }
  to   { transform: translateX(-22px); opacity: 0.01; filter: blur(6px); }
}
@keyframes slideOutToRight {
  from { transform: translateX(0); opacity: 1; filter: blur(0); }
  to   { transform: translateX(22px); opacity: 0.01; filter: blur(6px); }
}

/* Enter new page */
@keyframes slideInFromRight {
  from { transform: translateX(22px); opacity: 0.01; filter: blur(6px); }
  to   { transform: translateX(0); opacity: 1; filter: blur(0); }
}
@keyframes slideInFromLeft {
  from { transform: translateX(-22px); opacity: 0.01; filter: blur(6px); }
  to   { transform: translateX(0); opacity: 1; filter: blur(0); }
}

/* Classes used by JS */
.page.slide-out-left  { animation: slideOutToLeft 420ms cubic-bezier(0.22,0.61,0.36,1) both; }
.page.slide-out-right { animation: slideOutToRight 420ms cubic-bezier(0.22,0.61,0.36,1) both; }
.page.slide-in-right  { animation: slideInFromRight 420ms cubic-bezier(0.22,0.61,0.36,1) both; }
.page.slide-in-left   { animation: slideInFromLeft 420ms cubic-bezier(0.22,0.61,0.36,1) both; }

/* Disable fancy motion for users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  .page.slide-out-left,
  .page.slide-out-right,
  .page.slide-in-right,
  .page.slide-in-left {
    animation: none !important;
    transition: opacity 240ms ease;
  }
}

/* ======== 博客 Markdown 正文排版（轻量） ======== */
.md-article { max-width: 860px; margin: 0 auto; text-align: left; }
.md-article .post-meta { margin-bottom: 18px; }

/* ✅ 替换后的返回按钮样式 */
.back-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.35);
  background: rgba(255,255,255,0.25);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  backdrop-filter: blur(18px) saturate(180%);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2), inset 0 0 20px rgba(255,255,255,0.15);
  cursor: pointer;
  transition: all 0.3s ease;
  margin-bottom: 10px;
}
.back-button svg {
  width: 20px;
  height: 20px;
  stroke: #007aff;
  stroke-width: 2.2;
  fill: none;
}
.back-button:hover {
  transform: scale(1.08);
  background: rgba(255,255,255,0.45);
}
.back-button:active {
  transform: scale(0.9);
}

@media (prefers-color-scheme: dark) {
  .back-button { background: rgba(40,40,40,0.4); border: 1px solid rgba(255,255,255,0.2); }
  .back-button svg { stroke: #0a84ff; }
}

.md-article .post-date { margin: 6px 0 16px; color: #666; font-size: 0.95rem; }

.md-body { font-size: 1rem; line-height: 1.8; }
.md-body h1, .md-body h2, .md-body h3, .md-body h4 { margin: 1.2em 0 0.6em; }
.md-body h1 { font-size: 2rem; }
.md-body h2 { font-size: 1.6rem; }
.md-body h3 { font-size: 1.3rem; }
.md-body p { margin: 0.8em 0; }
.md-body a { color: #007aff; text-decoration: none; }
.md-body a:hover { text-decoration: underline; }
.md-body img { max-width: 100%; height: auto; border-radius: 12px; }
.md-body code { padding: 0.2em 0.4em; border-radius: 6px; background: rgba(0,0,0,0.06); }
@media (prefers-color-scheme: dark) {
  .md-body code { background: rgba(255,255,255,0.12); }
}
.md-body pre { overflow: auto; padding: 14px; border-radius: 12px; background: rgba(0,0,0,0.06); }
.md-body pre code { background: transparent; padding: 0; }
@media (prefers-color-scheme: dark) {
  .md-body pre { background: rgba(255,255,255,0.08); }
}
/* 列表 */
.md-body ul, .md-body ol { padding-left: 1.4em; margin: 0.6em 0; }
/* 引用 */
.md-body blockquote {
  margin: 1em 0; padding: 0.6em 1em; border-left: 3px solid #ccc; opacity: 0.9;
  background: rgba(255,255,255,0.5); border-radius: 8px;
}
@media (prefers-color-scheme: dark) {
  .md-body blockquote { background: rgba(40,40,40,0.4); border-left-color: #666; }
}

/* ✅ 二级页面淡入动画 */
.md-article {
  animation: fadeInUp 0.5s ease forwards;
  opacity: 0;
  transform: translateY(20px);
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ===== 博客加载动画 ===== */
.loading-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.6);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.loading-overlay.show {
  opacity: 1;
  pointer-events: auto;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid rgba(0,0,0,0.1);
  border-top-color: #007aff;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

@media (prefers-color-scheme: dark) {
  .loading-overlay { background: rgba(0,0,0,0.55); }
  .spinner { border: 4px solid rgba(255,255,255,0.15); border-top-color: #0a84ff; }
}