/* ============================================================
 * LifePilot App Shell v1.0
 * 统一布局：侧边栏 + 顶栏 + 内容区 + 移动端底部 Tab
 * 依赖 design-tokens.css（CSS 变量）
 * 所有子系统引用本文件即可获得一致外壳。
 * ============================================================ */

/* 图标组件基础样式 */
lp-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.25em;
  height: 1.25em;
  line-height: 0;
  flex: none;
}
lp-icon svg { width: 100%; height: 100%; display: block; }

/* emoji 图标包裹（替换 SVG 图标时使用，统一管理大小） */
.ico {
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 1.15em; line-height: 1; flex: none;
}

:root {
  --sidebar-width: 248px;
  --sidebar-width-collapsed: 78px;
  --topbar-h: 60px;
  --sidebar-bg: var(--color-surface);
}

.app-shell {
  display: flex;
  min-height: 100vh;
  background: var(--color-bg);
}

/* ============ 侧边栏 ============ */
.sidebar {
  width: var(--sidebar-width);
  flex: 0 0 var(--sidebar-width);
  background: var(--sidebar-bg);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: var(--z-sticky);
  transition: width var(--transition-normal), flex-basis var(--transition-normal);
}
.sidebar.collapsed {
  width: var(--sidebar-width-collapsed);
  flex-basis: var(--sidebar-width-collapsed);
}

.sidebar .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  height: var(--topbar-h);
  padding: 0 18px;
  border-bottom: 1px solid var(--color-border);
  font-weight: 700;
  font-size: 18px;
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
}
.sidebar .brand .brand-mark {
  font-size: 26px; line-height: 1; flex: 0 0 auto;
}
.sidebar.collapsed .brand .brand-text { display: none; }

.sidebar .nav {
  flex: 1;
  overflow-y: auto;
  padding: 10px 0;
}
.sidebar .nav .nav-section {
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--color-text-tertiary);
  padding: 14px 22px 6px;
  text-transform: uppercase;
}
.sidebar .nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 2px 12px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.sidebar .nav a:hover { background: var(--color-surface-hover); color: var(--color-primary); }
.sidebar .nav a.active {
  background: var(--color-primary-gradient);
  color: var(--color-text-inverse);
  font-weight: 600;
  box-shadow: var(--shadow-button);
}
.sidebar .nav a.active .ico { /* emoji 保持原本彩色 */ }
.sidebar .nav a .ico { font-size: 19px; flex: 0 0 auto; }
.sidebar.collapsed .nav a span { display: none; }
.sidebar.collapsed .nav .nav-section { visibility: hidden; height: 0; padding: 0; }

.sidebar .sidebar-footer {
  display: flex;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid var(--color-border);
}
.sidebar.collapsed .sidebar-footer { flex-direction: column; align-items: center; }

/* 通用图标按钮 */
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.icon-btn:hover { background: var(--color-surface-hover); color: var(--color-primary); border-color: var(--color-primary); }
.icon-btn .ico { font-size: 18px; }

/* ============ 主区域 ============ */
.main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.topbar {
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 24px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}
.topbar .topbar-title { font-size: 16px; font-weight: 600; color: var(--color-text-primary); }
.topbar .topbar-search {
  flex: 1;
  max-width: 440px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-bg-secondary);
  color: var(--color-text-tertiary);
}
.topbar .topbar-search input {
  border: none; background: transparent; outline: none;
  flex: 1; font-size: 14px; color: var(--color-text-primary);
}
.topbar .topbar-actions { display: flex; align-items: center; gap: 12px; margin-left: auto; }
.topbar .user-chip { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--color-text-secondary); }
.topbar .btn-admin {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px; border-radius: var(--radius-md);
  background: var(--color-warning-bg); color: var(--color-warning);
  text-decoration: none; font-size: 13px; font-weight: 600;
}
.topbar .btn-admin:hover { filter: brightness(.97); }

.menu-btn { display: none; }

/* ============ 内容区 ============ */
.content {
  flex: 1;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-2xl);
}

/* ============ 移动端底部导航 ============ */
.mobile-bottom-nav { display: none; }
.backdrop { display: none; }

/* ============ 响应式 ============ */
@media (max-width: 860px) {
  .sidebar {
    position: fixed;
    left: 0; top: 0; bottom: 0;
    transform: translateX(-100%);
    box-shadow: var(--shadow-lg);
    width: var(--sidebar-width) !important;
    flex-basis: var(--sidebar-width) !important;
    transition: transform var(--transition-normal);
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar.collapsed .nav a span { display: inline; }
  .sidebar.collapsed .brand .brand-text { display: inline; }

  .main { margin-left: 0 !important; }
  .menu-btn { display: inline-flex; }
  .topbar { padding: 0 14px; gap: 10px; }
  .topbar .topbar-search { display: none; }
  .topbar .user-chip span { display: none; }

  .content { padding: var(--space-lg); padding-bottom: calc(env(safe-area-inset-bottom) + 76px); }

  .stats-grid { grid-template-columns: 1fr 1fr; }
  .module-grid { grid-template-columns: 1fr; }

  .backdrop.show {
    display: block;
    position: fixed; inset: 0;
    background: rgba(0,0,0,.45);
    z-index: var(--z-modal-backdrop);
  }

  .mobile-bottom-nav {
    display: flex;
    position: fixed;
    left: 0; right: 0; bottom: 0;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: 6px 0 calc(env(safe-area-inset-bottom));
    z-index: var(--z-sticky);
    justify-content: space-around;
  }
  .mobile-bottom-nav a {
    flex: 1;
    display: flex; flex-direction: column; align-items: center; gap: 2px;
    padding: 6px 0;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 11px;
  }
  .mobile-bottom-nav a.active { color: var(--color-primary); }
  .mobile-bottom-nav a .ico { font-size: 22px; margin-bottom: 2px; }
}