/**
 * 全站顶部栏（2026 重做版）
 * 目标：与 /member/project 绿色清爽风格一致，移动端操作友好
 * UTF-8
 */
:root{
  --sn-bg: rgba(255,255,255,0.86);
  --sn-surface: #ffffff;
  --sn-border: rgba(15,23,42,0.10);
  --sn-text: #0f172a;
  --sn-muted: #64748b;
  --sn-accent: #10b981;
  --sn-accent2: #0d9488;
  --sn-radius: 14px;
  --sn-shadow: 0 10px 30px rgba(15, 23, 42, 0.10);
  --sn-h: 72px;
  --sn-z: 1200;
  --sn-font: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

@media (max-width: 767px){
  :root{ --sn-h: 60px; }
}

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

/* 给固定头部让位（避免被遮挡） */
body{
  padding-top: var(--sn-h);
}

.sn-header{
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--sn-z);
  font-family: var(--sn-font);
}

.sn-bar{
  height: var(--sn-h);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  background: var(--sn-bg);
  border-bottom: 1px solid var(--sn-border);
}

.sn-wrap{
  height: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 14px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  box-sizing: border-box;
}

@media (min-width: 992px){
  .sn-wrap{ padding: 0 20px; }
}

.sn-brand{
  display: inline-flex;
  align-items: center;
  gap: 0;
  min-width: 0;
  color: var(--sn-text);
  text-decoration: none;
}

.sn-logo-img{
  display: block;
  height: 36px;
  width: auto;
  max-width: min(220px, 42vw);
}
@media (max-width: 767px){
  .sn-logo-img{
    height: 30px;
    max-width: min(180px, 52vw);
  }
}

.sn-logo{
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(16,185,129,0.20), rgba(13,148,136,0.15));
  border: 1px solid rgba(16,185,129,0.20);
}
.sn-logo img{
  max-width: 100%;
  max-height: 100%;
  display: block;
}

.sn-brand-text{
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  min-width: 0;
}
.sn-brand-title{
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: 15px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sn-brand-sub{
  font-size: 11px;
  color: var(--sn-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sn-nav{
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 0;
}
.sn-nav a{
  color: var(--sn-muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  padding: 9px 12px;
  border-radius: 999px;
  transition: background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.sn-nav a:hover{
  background: rgba(15,23,42,0.05);
  color: var(--sn-text);
}
.sn-nav a.is-active{
  color: #022c22;
  background: linear-gradient(135deg, rgba(16,185,129,0.22), rgba(13,148,136,0.18));
  box-shadow: 0 0 0 1px rgba(16,185,129,0.25) inset;
}

.sn-actions{
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: nowrap;
}

.sn-icon-btn{
  border: 1px solid rgba(15,23,42,0.10);
  background: rgba(255,255,255,0.8);
  border-radius: 999px;
  height: 38px;
  min-width: 38px;
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--sn-text);
  cursor: pointer;
  user-select: none;
  transition: background 0.15s ease, transform 0.12s ease, box-shadow 0.15s ease;
}
.sn-icon-btn:active{ transform: scale(0.98); }
.sn-icon-btn:hover{
  background: rgba(255,255,255,1);
  box-shadow: 0 10px 20px rgba(15,23,42,0.08);
}
.sn-icon{
  width: 18px;
  height: 18px;
  display: inline-block;
}

.sn-icon-only{
  width: 38px;
  padding: 0;
}

/* 顶栏搜索：使用 ZUI ZenIcon 放大镜，比 Unicode ⌕ 更易在圆内视觉居中 */
.sn-search > .sn-icon-btn .sn-icon.icon.icon-search{
  width: 22px;
  height: 22px;
  font-size: 16px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.sn-search > .sn-icon-btn .sn-icon.icon.icon-search:before{
  display: block;
  line-height: 1;
}

.sn-primary-btn{
  height: 38px;
  padding: 0 20px;
  min-width: 96px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-weight: 700;
  color: #ffffff;
  background: linear-gradient(135deg, var(--sn-accent2) 0%, var(--sn-accent) 100%);
  box-shadow: 0 10px 22px rgba(5,150,105,0.28);
  transition: transform 0.12s ease, box-shadow 0.15s ease;
  white-space: nowrap;
}
.sn-primary-btn:active{ transform: translateY(1px); box-shadow: 0 6px 14px rgba(5,150,105,0.24); }

/* 桌面端搜索栏（按需展开） */
.sn-search{
  position: relative;
  display: inline-flex;
  align-items: center;
  width: 38px;
  justify-content: flex-end;
}

/* 搜索浮层：不挤压发布/个人中心 */
.sn-search-pop{
  position: absolute;
  right: 0;
  top: calc(100% + 10px);
  width: min(380px, 72vw);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px;
  border-radius: 14px;
  background: rgba(255,255,255,0.96);
  border: 1px solid rgba(15,23,42,0.10);
  box-shadow: 0 18px 46px rgba(15,23,42,0.16);
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  transition: opacity 0.16s ease, transform 0.16s ease;
  z-index: calc(var(--sn-z) + 20);
}
.sn-search.is-open .sn-search-pop{
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.sn-search-input{
  flex: 1;
  height: 40px;
  border-radius: 999px;
  border: 1px solid rgba(15,23,42,0.12);
  background: #fff;
  padding: 0 14px;
  outline: none;
  font-size: 14px;
  color: var(--sn-text);
}
.sn-search-input:focus{
  border-color: rgba(16,185,129,0.55);
  box-shadow: 0 0 0 3px rgba(16,185,129,0.16);
}
.sn-search-go{
  height: 40px;
  width: 44px;
  border-radius: 999px;
  border: 1px solid rgba(16,185,129,0.25);
  background: linear-gradient(135deg, rgba(16,185,129,0.16), rgba(13,148,136,0.10));
  cursor: pointer;
  color: var(--sn-accent2);
  font-weight: 900;
}
.sn-search-go:hover{
  background: linear-gradient(135deg, rgba(16,185,129,0.22), rgba(13,148,136,0.14));
}

/* 用户菜单（复用 dropdown class，避免破坏旧 JS/CSS 依赖） */
.sn-user{
  position: relative;
}
.sn-user-menu{
  position: absolute;
  right: 0;
  top: calc(100% + 10px);
  min-width: 200px;
  background: var(--sn-surface);
  border: 1px solid rgba(15,23,42,0.10);
  border-radius: 12px;
  box-shadow: var(--sn-shadow);
  padding: 8px;
  display: none;
}
.sn-user.open .sn-user-menu{ display: block; }
.sn-user-menu a{
  display: block;
  padding: 10px 10px;
  border-radius: 10px;
  color: var(--sn-text);
  text-decoration: none;
  font-weight: 600;
  font-size: 13px;
}
.sn-user-menu a:hover{ background: rgba(15,23,42,0.05); }
.sn-user-menu .sn-divider{
  height: 1px;
  margin: 6px 4px;
  background: rgba(15,23,42,0.08);
}
.sn-user-badge{
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 800;
}

.sn-user-btn{
  min-width: 110px;
}

/* 移动端：隐藏中间导航，改为抽屉 */
@media (max-width: 991px){
  .sn-nav{ display: none; justify-content: flex-start; }
}

.sn-burger{
  display: none;
}
@media (max-width: 991px){
  .sn-burger{ display: inline-flex; }
  .sn-search{ display: none; }
  /* 手机端：菜单按钮放最右；发布/个人中心更窄 */
  .sn-actions{ gap: 8px; flex-wrap: nowrap; }
  .sn-burger{ order: 99; }
  .sn-primary-btn{
    padding: 0 14px;
    min-width: 76px;
  }
  .sn-user-btn{
    min-width: 86px;
    padding-left: 10px;
    padding-right: 10px;
  }
}

/* 抽屉与遮罩 */
.sn-backdrop{
  position: fixed;
  inset: 0;
  /* 避免 100vh 包含被浏览器底栏占用的区域，导致遮罩与视口不一致 */
  min-height: 100vh;
  min-height: 100dvh;
  background: rgba(2, 6, 23, 0.45);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease;
  z-index: calc(var(--sn-z) - 1);
}
.sn-backdrop.is-open{
  opacity: 1;
  pointer-events: auto;
}

.sn-drawer{
  position: fixed;
  top: 0;
  right: 0;
  /* 动态视口高度：随手机浏览器地址栏/底栏显隐变化，减少底部被挡 */
  height: 100vh;
  height: 100dvh;
  max-height: 100dvh;
  width: min(86vw, 360px);
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-left: 1px solid rgba(15,23,42,0.10);
  box-shadow: -18px 0 40px rgba(15,23,42,0.16);
  transform: translateX(102%);
  transition: transform 0.22s ease;
  z-index: var(--sn-z);
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
}
.sn-drawer.is-open{ transform: translateX(0); }
.sn-drawer-head{
  flex: 0 0 auto;
  height: var(--sn-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
  border-bottom: 1px solid rgba(15,23,42,0.08);
}
.sn-drawer-title{
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--sn-text);
}
.sn-drawer-body{
  flex: 1 1 auto;
  min-height: 0;
  padding: 12px 14px;
  /* 额外底部留白：避免最后一项被浏览器底栏/手势条挡住 */
  padding-bottom: max(32px, calc(20px + env(safe-area-inset-bottom, 0px)));
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
}
.sn-drawer-search{
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}
.sn-drawer-search input{
  flex: 1;
  height: 42px;
  border-radius: 999px;
  border: 1px solid rgba(15,23,42,0.12);
  padding: 0 14px;
  outline: none;
  font-size: 14px;
}
.sn-drawer-search button{
  height: 42px;
  padding: 0 14px;
  border-radius: 999px;
  border: none;
  background: linear-gradient(135deg, var(--sn-accent2) 0%, var(--sn-accent) 100%);
  color: #fff;
  font-weight: 800;
}

.sn-drawer-grid{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.sn-drawer-grid-1col{
  grid-template-columns: 1fr;
}
.sn-drawer-link{
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 48px;
  padding: 10px 10px;
  border-radius: 14px;
  border: 1px solid rgba(15,23,42,0.08);
  background: #fff;
  text-decoration: none;
  color: var(--sn-text);
  font-weight: 800;
  line-height: 1.15;
}
.sn-drawer-link:active{ transform: scale(0.99); }
.sn-drawer-link.sn-strong{
  background: linear-gradient(135deg, rgba(16,185,129,0.18), rgba(13,148,136,0.12));
  border-color: rgba(16,185,129,0.22);
}
.sn-drawer-section{
  margin-top: 14px;
}
.sn-drawer-label{
  margin: 0 0 8px;
  color: var(--sn-muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* 抽屉里的一级/二级：手风琴（移动端） */
.sn-acc{
  border: 1px solid rgba(15,23,42,0.08);
  background: #fff;
  border-radius: 14px;
  overflow: hidden;
}
.sn-acc + .sn-acc{ margin-top: 10px; }
.sn-acc-sum{
  list-style: none;
  cursor: pointer;
  padding: 12px 12px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  column-gap: 8px;
  font-weight: 900;
  color: var(--sn-text);
}
/* 移动端：有二级菜单的主菜单标题居中，箭头固定在右侧 */
.sn-acc-sum > span:first-of-type{
  grid-column: 2;
  text-align: center;
  justify-self: center;
}
.sn-acc-caret{
  grid-column: 3;
  justify-self: end;
  opacity: 0.55;
  transition: transform 0.18s ease;
}
.sn-acc-sum::-webkit-details-marker{ display:none; }
.sn-acc[open] .sn-acc-caret{ transform: rotate(180deg); }
.sn-acc-body{
  border-top: 1px solid rgba(15,23,42,0.06);
  padding: 10px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.sn-acc-link{
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 44px;
  padding: 10px 10px;
  border-radius: 12px;
  border: 1px solid rgba(15,23,42,0.08);
  background: rgba(15,23,42,0.02);
  text-decoration: none;
  color: var(--sn-text);
  font-weight: 800;
  line-height: 1.15;
}
.sn-acc-link:active{ transform: scale(0.99); }

/* ===== 桌面端二级下拉菜单 ===== */
.sn-dropdown{
  position: relative;
  display: inline-flex;
  align-items: center;
}
.sn-dropdown-toggle{
  color: var(--sn-muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  padding: 9px 12px;
  border-radius: 999px;
  transition: background 0.15s ease, color 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
  cursor: pointer;
}
.sn-dropdown-toggle:hover,
.sn-dropdown.is-open .sn-dropdown-toggle{
  background: rgba(15,23,42,0.05);
  color: var(--sn-text);
}
.sn-caret{
  font-size: 10px;
  opacity: 0.6;
  transition: transform 0.18s ease;
  display: inline-block;
}
.sn-dropdown.is-open .sn-caret{
  transform: rotate(180deg);
}
.sn-dropdown-menu{
  position: absolute;
  left: 50%;
  top: calc(100% + 8px);
  transform: translateX(-50%) translateY(-6px);
  min-width: 160px;
  background: var(--sn-surface);
  border: 1px solid rgba(15,23,42,0.10);
  border-radius: 12px;
  box-shadow: 0 12px 36px rgba(15,23,42,0.13);
  padding: 6px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.16s ease, transform 0.16s ease;
  z-index: calc(var(--sn-z) + 10);
}
.sn-dropdown.is-open .sn-dropdown-menu{
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.sn-dropdown-menu a{
  display: block;
  padding: 9px 12px;
  border-radius: 8px;
  color: var(--sn-text);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  transition: background 0.12s ease, color 0.12s ease;
}
.sn-dropdown-menu a:hover{
  background: rgba(15,23,42,0.05);
  color: var(--sn-accent2);
}

/* 移动端抽屉里的子项直接平铺，不需要下拉 */
@media (max-width: 991px){
  .sn-dropdown{ display: none; }
}

@media (prefers-reduced-motion: reduce){
  .sn-search-input,
  .sn-backdrop,
  .sn-drawer,
  .sn-icon-btn,
  .sn-primary-btn,
  .sn-dropdown-menu,
  .sn-acc-caret{ transition: none !important; }
}