/* ============================================================
   App Shell —— 左侧边栏 + 顶栏 + 中间内容
   渐进增强：shell.js 隐藏旧 <header>，把 <main> 挪到内容区。
   ============================================================ */

:root {
  --spx-sidebar-w: 220px;
  --spx-topbar-h: 64px;
  --spx-brand: #185FA5;
}

body.spx-shell {
  padding-left: var(--spx-sidebar-w);
  padding-top: var(--spx-topbar-h);
  background: var(--bg2, #f6f8fa);
  min-height: 100vh;
  box-sizing: border-box;
}
/* 旧的顶部横向导航整块隐藏 */
body.spx-shell > header { display: none !important; }

body.spx-shell main {
  max-width: 1180px;
  margin: 0;
  padding: 20px 28px;
}
body.spx-shell .site-footer {
  max-width: 1180px;
  margin: 0;
}

/* ── 侧边栏 ─────────────────────────────────────────────── */
.spx-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--spx-sidebar-w);
  height: 100vh;
  background: var(--bg, #fff);
  border-right: 1px solid var(--border, #d0d7de);
  display: flex;
  flex-direction: column;
  z-index: 300;
  transition: transform .2s ease;
}
.spx-brand {
  height: var(--spx-topbar-h);
  flex: none;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 20px;
  background: var(--spx-brand);
  color: #fff;
  text-decoration: none;
}
.spx-brand:hover { color: #fff; filter: brightness(1.05); }
.spx-brand-name { font-size: 16px; font-weight: 700; letter-spacing: .5px; line-height: 1.3; }
.spx-brand-slogan { font-size: 10.5px; font-weight: 400; color: rgba(255,255,255,.78); letter-spacing: .2px; line-height: 1.3; }
.spx-nav {
  flex: 1;
  overflow-y: auto;
  padding: 10px 0 24px;
}
.spx-group-title {
  padding: 14px 20px 6px;
  font-size: 11px;
  color: var(--txt2, #9aa0aa);
  letter-spacing: 1px;
}
.spx-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 20px;
  color: var(--txt, #24292f);
  text-decoration: none;
  font-size: 14px;
  border-left: 3px solid transparent;
}
.spx-link:hover { background: rgba(24, 95, 165, .06); }
.spx-link.active {
  color: var(--spx-brand);
  background: rgba(24, 95, 165, .10);
  border-left-color: var(--spx-brand);
  font-weight: 600;
}
.spx-link .spx-ico { width: 18px; text-align: center; flex: none; }

/* ── 顶栏 ───────────────────────────────────────────────── */
.spx-topbar {
  position: fixed;
  top: 0;
  left: var(--spx-sidebar-w);
  right: 0;
  height: var(--spx-topbar-h);
  background: var(--bg, #fff);
  border-bottom: 1px solid var(--border, #d0d7de);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 12px;
  z-index: 250;
}
.spx-title { font-size: 16px; font-weight: 600; color: var(--txt, #24292f); }
.spx-spacer { flex: 1; }

.spx-hamburger {
  display: none;
  border: none;
  background: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--txt, #24292f);
}

/* ── 账户区(右上角) ───────────────────────────────────── */
.spx-account { position: relative; }
.spx-account-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border, #d0d7de);
  border-radius: 20px;
  background: var(--bg, #fff);
  color: var(--txt, #24292f);
  padding: 5px 14px;
  font-size: 13px;
  cursor: pointer;
}
.spx-account-btn:hover { border-color: var(--spx-brand); color: var(--spx-brand); }
.spx-menu {
  position: absolute;
  right: 0;
  top: 40px;
  min-width: 160px;
  background: var(--bg, #fff);
  border: 1px solid var(--border, #d0d7de);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(27, 31, 36, .12);
  padding: 6px;
  z-index: 260;
}
.spx-menu[hidden] { display: none; }
.spx-menu a, .spx-menu button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 8px 12px;
  border: none;
  background: none;
  color: var(--txt, #24292f);
  font-size: 13px;
  text-decoration: none;
  border-radius: 6px;
  cursor: pointer;
}
.spx-menu a:hover, .spx-menu button:hover { background: var(--bg2, #f6f8fa); }
.spx-menu .spx-menu-sub { font-size: 11px; color: var(--txt2, #9aa0aa); padding: 4px 12px 8px; }

/* 遮罩(移动端侧边栏展开时) */
.spx-mask {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .35);
  z-index: 290;
}

/* ── 响应式 ─────────────────────────────────────────────── */
@media (max-width: 900px) {
  body.spx-shell { padding-left: 0; }
  .spx-sidebar { transform: translateX(-100%); }
  .spx-sidebar.open { transform: translateX(0); }
  .spx-topbar { left: 0; }
  .spx-hamburger { display: inline-flex; }
  .spx-mask.show { display: block; }
  body.spx-shell main, body.spx-shell .site-footer { padding-left: 16px; padding-right: 16px; }
}