/* ===== App Shell：全局侧边栏 + 顶部栏 =====
 * 注入侧边栏 + 顶部栏。主题用 html data-theme + body class 双写，
 * 确保侧边栏主题切换实时同步到各页（各页 CSS 看 body class）。
 * 命名空间 body.has-shell，避免污染各页内联 CSS。
 */

:root {
  --app-bg-sidebar: #0f0f18;
  --app-bg-topbar: rgba(15,15,24,0.85);
  --app-border: rgba(255,255,255,0.08);
  --app-border-hover: rgba(255,255,255,0.15);
  --app-text-primary: #f0f0f5;
  --app-text-secondary: #8888a0;
  --app-text-muted: #55556a;
  --app-accent: #6366f1;
  --app-accent-hover: #818cf8;
  --app-bg-hover: rgba(255,255,255,0.06);
  --app-bg-active: rgba(99,102,241,0.14);
  --app-bg-glass: rgba(255,255,255,0.06);
  --app-shadow: 0 4px 24px rgba(0,0,0,0.3);
  --app-sidebar-width: 220px;
  --app-sidebar-collapsed: 60px;
  --app-topbar-height: 56px;
}

[data-theme="light"] {
  --app-bg-sidebar: #fafafa;
  --app-bg-topbar: rgba(255,255,255,0.85);
  --app-border: rgba(0,0,0,0.06);
  --app-border-hover: rgba(0,0,0,0.12);
  --app-text-primary: #1d1d1f;
  --app-text-secondary: #6e6e73;
  --app-text-muted: #aeaeb2;
  --app-accent: #0071e3;
  --app-accent-hover: #0077ed;
  --app-bg-hover: rgba(0,0,0,0.05);
  --app-bg-active: rgba(0,113,227,0.12);
  --app-bg-glass: rgba(255,255,255,0.85);
  --app-shadow: 0 4px 24px rgba(0,0,0,0.08);
}

html:not([data-theme="light"]) { color-scheme: dark; }
[data-theme="light"] { color-scheme: light; }

/* ===== body 留白（侧边栏宽 + 顶栏高）===== */
body.has-shell {
  padding-left: var(--app-sidebar-width);
  padding-top: var(--app-topbar-height);
  box-sizing: border-box;
}
body.has-shell.app-collapsed {
  padding-left: 0 !important;
}

/* ===== 侧边栏 ===== */
.app-sidebar {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--app-sidebar-width);
  background: var(--app-bg-sidebar);
  border-right: 1px solid var(--app-border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: width 0.3s ease, transform 0.3s ease;
  overflow: hidden;
}

.app-sidebar-header {
  height: var(--app-topbar-height);
  display: flex; align-items: center; gap: 10px;
  padding: 0 16px;
  border-bottom: 1px solid var(--app-border);
  flex-shrink: 0;
}
.app-sidebar-logo { width: 28px; height: 28px; flex-shrink: 0; border-radius: 6px; object-fit: cover; }
.app-sidebar-title {
  font-size: 15px; font-weight: 700; color: var(--app-text-primary);
  white-space: nowrap; overflow: hidden; letter-spacing: 0.02em;
}
body.app-collapsed .app-sidebar {
  transform: translateX(-100%);
}
body.app-collapsed .app-topbar { left: 0; }
body.has-shell.app-collapsed { padding-left: 0 !important; }

.app-sidebar-nav { flex: 1; padding: 10px 8px; overflow-y: auto; overflow-x: hidden; }
.app-sidebar-nav::-webkit-scrollbar { width: 6px; }
.app-sidebar-nav::-webkit-scrollbar-thumb { background: var(--app-border); border-radius: 3px; }

.app-nav-section {
  font-size: 11px; font-weight: 600; color: var(--app-text-muted);
  text-transform: uppercase; letter-spacing: 0.08em;
  padding: 10px 12px 4px; white-space: nowrap;
}

.app-nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 9px 12px; margin: 2px 0; border-radius: 8px;
  color: var(--app-text-secondary); text-decoration: none;
  font-size: 13.5px; font-weight: 500; white-space: nowrap;
  transition: background 0.15s, color 0.15s; cursor: pointer;
}
.app-nav-item:hover { background: var(--app-bg-hover); color: var(--app-text-primary); }
.app-nav-item.active { background: var(--app-bg-active); color: var(--app-accent-hover); font-weight: 600; }
.app-nav-icon { font-size: 17px; flex-shrink: 0; width: 22px; text-align: center; }
.app-nav-label { overflow: hidden; text-overflow: ellipsis; }
body.app-collapsed .app-nav-item { justify-content: center; padding: 9px 0; }

.app-sidebar-footer { border-top: 1px solid var(--app-border); padding: 10px 8px; display: flex; flex-direction: column; }

/* 底部工具区：主题(上) + 收起(下)，垂直分两行，固定在侧边栏底部不随滚动 */
.app-sidebar-tools {
  border-top: 1px solid var(--app-border);
  padding: 8px;
  display: flex; flex-direction: column; gap: 6px;
  flex-shrink: 0;
}
.app-tool-btn {
  width: 100%; height: 34px;
  border: 1px solid var(--app-border); background: var(--app-bg-glass);
  color: var(--app-text-secondary); border-radius: 8px; cursor: pointer;
  font-size: 14px; display: flex; align-items: center; justify-content: center;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.app-tool-btn:hover { background: var(--app-bg-hover); color: var(--app-text-primary); border-color: var(--app-border-hover); }
.app-tool-btn.app-logout:hover { color: #ef4444; border-color: rgba(239,68,68,0.4); }

/* 侧边栏底部收起按钮 */
.app-sidebar-collapse {
  width: 100%;
  padding: 10px;
  background: transparent;
  border: none;
  border-top: 1px solid var(--app-border);
  color: var(--app-text-secondary);
  cursor: pointer;
  font-size: 16px;
  transition: color 0.15s, background 0.15s;
  flex-shrink: 0;
}
.app-sidebar-collapse:hover { color: var(--app-text-primary); background: var(--app-bg-hover); }

body.app-collapsed .app-sidebar-tools {
  padding: 8px 4px;
}
body.app-collapsed .app-sidebar-collapse { display: none; }

.app-user-badge {
  display: flex; align-items: center; gap: 6px;
  font-size: 13px; color: var(--app-text-secondary);
  padding: 0 12px; white-space: nowrap; overflow: hidden;
}

/* ===== 顶部栏 ===== */
.app-topbar {
  position: fixed;
  top: 0; left: var(--app-sidebar-width); right: 0;
  height: var(--app-topbar-height);
  background: var(--app-bg-topbar);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--app-border);
  display: flex; align-items: center;
  padding: 0 20px;
  z-index: 90;
  transition: left 0.3s ease;
}
body.app-collapsed .app-topbar { left: var(--app-sidebar-collapsed); }

/* 顶栏左侧折叠/菜单按钮 */
.app-topbar-toggle {
  width: 38px; height: 38px;
  border: 1px solid var(--app-border); background: var(--app-bg-glass);
  color: var(--app-text-primary); border-radius: 8px; cursor: pointer;
  font-size: 17px; display: flex; align-items: center; justify-content: center;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  flex-shrink: 0;
}
.app-topbar-toggle:hover { background: var(--app-bg-hover); border-color: var(--app-border-hover); }

.app-topbar-right { margin-left: auto; position: relative; display: flex; align-items: center; gap: 8px; }
.app-notice-btn {
  width: 36px; height: 36px;
  border: 1px solid var(--app-border); background: var(--app-bg-glass);
  color: var(--app-text-primary); border-radius: 8px; cursor: pointer;
  font-size: 16px; display: flex; align-items: center; justify-content: center;
  transition: background 0.15s, border-color 0.15s;
}
.app-notice-btn:hover { background: var(--app-bg-hover); border-color: var(--app-border-hover); }
.app-user-menu-btn {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 12px; border-radius: 8px;
  border: 1px solid transparent; background: transparent;
  color: var(--app-text-primary); cursor: pointer; font-size: 14px;
  transition: background 0.15s;
}
.app-user-menu-btn:hover { background: var(--app-bg-hover); }
/* 匿名模式登录按钮（顶栏右侧，与用户菜单同位置互斥） */
.app-login-btn {
  padding: 6px 14px; border-radius: 8px;
  background: var(--app-accent); color: #fff;
  border: 1px solid var(--app-accent);
  cursor: pointer; font-size: 13.5px; font-weight: 500;
  transition: background 0.15s, border-color 0.15s;
}
.app-login-btn:hover { background: var(--app-accent-hover); border-color: var(--app-accent-hover); }
.app-user-avatar {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--app-accent); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 600; flex-shrink: 0;
}
.app-user-name { max-width: 140px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.app-caret { font-size: 11px; color: var(--app-text-muted); }

.app-dropdown {
  position: absolute; top: calc(100% + 6px); right: 0;
  min-width: 180px;
  background: var(--app-bg-sidebar);
  border: 1px solid var(--app-border);
  border-radius: 10px; box-shadow: var(--app-shadow);
  padding: 6px; z-index: 200;
  display: none;
}
.app-dropdown.show { display: block; }
.app-dropdown-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border-radius: 7px;
  color: var(--app-text-primary); cursor: pointer;
  font-size: 13.5px; white-space: nowrap;
  transition: background 0.15s;
}
.app-dropdown-item:hover { background: var(--app-bg-hover); }
.app-dropdown-item.danger:hover { background: rgba(239,68,68,0.12); color: #ef4444; }
.app-dropdown-divider { height: 1px; background: var(--app-border); margin: 4px 0; }
.app-dropdown-role {
  padding: 4px 12px 8px; font-size: 11px; color: var(--app-text-muted);
}

/* ===== 改密弹窗（shell 自带，不依赖 Bootstrap）===== */
.app-modal-mask {
  position: fixed; inset: 0; background: rgba(0,0,0,0.55);
  z-index: 300; display: none; align-items: center; justify-content: center;
}
.app-modal-mask.show { display: flex; }
.app-modal {
  width: 340px; max-width: 92vw;
  background: var(--app-bg-sidebar);
  border: 1px solid var(--app-border);
  border-radius: 12px; box-shadow: var(--app-shadow);
  padding: 20px;
}
.app-modal h3 { font-size: 16px; color: var(--app-text-primary); margin: 0 0 16px; }
.app-modal label { display: block; font-size: 12px; color: var(--app-text-secondary); margin: 10px 0 4px; }
.app-modal input {
  width: 100%; box-sizing: border-box; padding: 8px 10px;
  background: var(--app-bg-glass); border: 1px solid var(--app-border);
  border-radius: 7px; color: var(--app-text-primary); font-size: 14px;
}
.app-modal input:focus { outline: none; border-color: var(--app-accent); }
.app-modal-err { color: #ef4444; font-size: 12px; margin-top: 8px; min-height: 16px; }
.app-modal-actions { display: flex; gap: 8px; margin-top: 16px; justify-content: flex-end; }
.app-modal-actions button {
  padding: 7px 16px; border-radius: 7px; cursor: pointer; font-size: 13px; border: 1px solid var(--app-border);
}
.app-modal-actions .app-btn-cancel { background: transparent; color: var(--app-text-secondary); }
.app-modal-actions .app-btn-primary { background: var(--app-accent); color: #fff; border-color: var(--app-accent); }

/* 登录弹窗滑块验证 */
.app-captcha-wrap { margin: 10px 0; }
@keyframes appBadgePulse { 0%,100%{transform:scale(1);opacity:1;} 50%{transform:scale(1.3);opacity:0.7;} }
.app-captcha-track {
  position: relative; height: 36px; background: var(--app-bg-glass);
  border: 1px solid var(--app-border); border-radius: 8px; overflow: hidden;
  user-select: none; -webkit-user-select: none; touch-action: none;
}
.app-captcha-fill {
  position: absolute; left: 0; top: 0; bottom: 0; width: 0;
  background: linear-gradient(90deg, var(--app-accent), var(--app-accent-hover));
  border-radius: 8px 0 0 8px; transition: width 0.1s;
}
.app-captcha-knob {
  position: absolute; top: 3px; left: 3px; width: 30px; height: 30px;
  background: #fff; border-radius: 6px; display: flex; align-items: center; justify-content: center;
  font-size: 14px; cursor: grab; user-select: none; z-index: 1; box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}
.app-captcha-text {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-size: 13px; color: var(--app-text-muted); pointer-events: none;
}
.app-login-tab { user-select: none; }

/* ===== 移动端抽屉 ===== */
.app-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.5); z-index: 99; opacity: 0; transition: opacity 0.3s;
}
.app-overlay.show { display: block; opacity: 1; }

/* 侧边栏完全隐藏（桌面端收起/手机端也可用） */
body.has-shell.app-sidebar-hidden {
  padding-left: 0 !important;
}
body.has-shell.app-sidebar-hidden .app-sidebar {
  transform: translateX(-100%);
}
body.has-shell.app-sidebar-hidden .app-topbar {
  left: 0;
}

@media (max-width: 768px) {
  body.has-shell { padding-left: 0 !important; padding-top: var(--app-topbar-height); }
  body.has-shell.app-collapsed { padding-left: 0 !important; }
  .app-sidebar { transform: translateX(-100%); width: var(--app-sidebar-width); box-shadow: var(--app-shadow); }
  .app-sidebar.app-open { transform: translateX(0) !important; }
  .app-topbar { left: 0; }
  body.app-collapsed .app-topbar { left: 0; }
  body.app-collapsed .app-sidebar-title,
  body.app-collapsed .app-nav-label,
  body.app-collapsed .app-nav-section,
  body.app-collapsed .app-user-badge { display: block; }
}

/* ===== 隐藏各页冗余的导航/主题元素（shell 已覆盖）=====
 * - 各页 #themeToggle / .theme-btn 浮动主题按钮（主题统一到侧边栏）
 * - 各页 #backLink / .back / .back-link / .back-btn 返回按钮（侧边栏已导航）
 * - index_v2 的 .topbar（标题/用户名/入口按钮，全由 shell 顶栏+侧边栏取代）
 * 仅在 has-shell 生效，未挂 shell 的页面（login/home）不受影响。
 */
body.has-shell #themeToggle,
body.has-shell .theme-btn,
body.has-shell #backLink,
body.has-shell a.back,
body.has-shell a.back-link,
body.has-shell a.back-btn,
body.has-shell #brandTag,
body.has-shell .topbar {
  display: none !important;
}

/* index_v2 隐藏 topbar 后，toolbar 紧贴顶栏下方即可，无需额外处理 */