/* ============================================
   办公协同平台 - 布局系统 (Layout)
   ============================================ */

/* ---- App Shell ---- */
.app-shell { display: flex; height: 100vh; overflow: hidden; }

/* ---- Sidebar (Left Nav) ---- */
.sidebar {
  width: var(--sidebar-width); background: var(--bg-sidebar); display: flex;
  flex-direction: column; align-items: center; padding: var(--space-3) 0;
  z-index: var(--z-sticky); flex-shrink: 0; transition: width var(--transition-normal);
}
.sidebar.expanded { width: var(--sidebar-expanded); align-items: stretch; padding: var(--space-3) var(--space-2); }

.sidebar-logo {
  width: 36px; height: 36px; background: var(--primary-500); border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center; color: #fff;
  font-weight: var(--weight-bold); font-size: var(--text-lg); margin-bottom: var(--space-6);
  cursor: pointer; flex-shrink: 0;
}
.sidebar.expanded .sidebar-logo { width: auto; padding: 0 var(--space-3); justify-content: flex-start; gap: var(--space-2); border-radius: var(--radius-md); }

.sidebar-nav { flex: 1; display: flex; flex-direction: column; gap: var(--space-1); width: 100%; overflow-y: auto; }

.sidebar-item {
  display: flex; align-items: center; justify-content: center; width: 44px; height: 44px;
  border-radius: var(--radius-md); color: rgba(255,255,255,0.6);
  transition: all var(--transition-fast); cursor: pointer; position: relative;
  margin: 0 auto; flex-shrink: 0;
}
.sidebar-item:hover { background: var(--bg-sidebar-hover); color: rgba(255,255,255,0.9); }
.sidebar-item.active { background: var(--bg-sidebar-active); color: #fff; }
.sidebar-item .sidebar-icon { font-size: 20px; display: flex; align-items: center; justify-content: center; }
.sidebar-item .sidebar-text { display: none; font-size: var(--text-sm); font-weight: var(--weight-medium); white-space: nowrap; }
.sidebar-item .nav-badge {
  position: absolute; top: 4px; right: 4px; min-width: 16px; height: 16px;
  background: var(--badge-bg); color: var(--badge-text); font-size: 10px;
  border-radius: var(--radius-full); display: flex; align-items: center; justify-content: center;
  padding: 0 4px; font-weight: var(--weight-semibold);
}

.sidebar.expanded .sidebar-item {
  width: 100%; justify-content: flex-start; padding: 0 var(--space-3); gap: var(--space-3);
}
.sidebar.expanded .sidebar-item .sidebar-text { display: block; }
.sidebar.expanded .sidebar-item .nav-badge { position: static; margin-left: auto; }

.sidebar-divider { height: 1px; background: rgba(255,255,255,0.1); margin: var(--space-2) var(--space-3); }

.sidebar-bottom { margin-top: auto; display: flex; flex-direction: column; align-items: center; gap: var(--space-1); width: 100%; }

/* ---- Panel (Second Column) ---- */
.panel-col {
  width: var(--panel-width); border-right: 1px solid var(--border-color);
  background: var(--bg-surface); display: flex; flex-direction: column;
  flex-shrink: 0; overflow: hidden;
}
.panel-col-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-3) var(--space-4); height: var(--topbar-height);
  border-bottom: 1px solid var(--border-color); flex-shrink: 0;
}
.panel-col-header h2 { font-size: var(--text-md); font-weight: var(--weight-semibold); }
.panel-col-filter {
  display: flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-4); border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}
.panel-col-body { flex: 1; overflow-y: auto; }

/* ---- Main Content Area ---- */
.main-content { flex: 1; display: flex; flex-direction: column; overflow: hidden; min-width: 0; }

.content-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-3) var(--space-6); height: var(--topbar-height);
  border-bottom: 1px solid var(--border-color); flex-shrink: 0;
  background: var(--bg-surface);
}
.content-header-left { display: flex; align-items: center; gap: var(--space-3); min-width: 0; }
.content-header-right { display: flex; align-items: center; gap: var(--space-2); flex-shrink: 0; }
.content-header-title {
  font-size: var(--text-md); font-weight: var(--weight-semibold);
  color: var(--text-primary); white-space: nowrap;
}

.content-body { flex: 1; overflow-y: auto; background: var(--bg-main); }
.content-body.no-bg { background: var(--bg-surface); }

/* Padded content area */
.content-padded { padding: var(--space-6); max-width: 1200px; }
.content-full { padding: 0; }

/* ---- Right Info Panel ---- */
.info-panel {
  width: 340px; border-left: 1px solid var(--border-color); background: var(--bg-surface);
  display: flex; flex-direction: column; flex-shrink: 0; overflow: hidden;
}
.info-panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-3) var(--space-4); height: var(--topbar-height);
  border-bottom: 1px solid var(--border-color); flex-shrink: 0;
}
.info-panel-body { flex: 1; overflow-y: auto; padding: var(--space-4); }

/* ---- Chat Layout ---- */
.chat-layout { display: flex; flex: 1; overflow: hidden; }
.chat-messages {
  flex: 1; display: flex; flex-direction: column; overflow: hidden;
}
.chat-messages-body { flex: 1; overflow-y: auto; padding: var(--space-2) 0; }
.chat-input-area {
  border-top: 1px solid var(--border-color); padding: var(--space-3) var(--space-4);
  background: var(--bg-surface);
}
.chat-input-toolbar {
  display: flex; align-items: center; gap: var(--space-1); margin-bottom: var(--space-2);
}
.chat-input-box {
  display: flex; align-items: flex-end; gap: var(--space-2);
  background: var(--bg-hover); border-radius: var(--radius-lg); padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border-color);
}
.chat-input-box:focus-within { border-color: var(--primary-500); background: var(--bg-surface); }
.chat-input-box textarea {
  flex: 1; border: none; background: none; resize: none; outline: none;
  font-size: var(--text-base); color: var(--text-primary); min-height: 22px;
  max-height: 120px; line-height: 1.5;
}
.chat-send-btn {
  width: 32px; height: 32px; border-radius: var(--radius-md);
  background: var(--primary-500); color: #fff; display: flex;
  align-items: center; justify-content: center; flex-shrink: 0;
  transition: background var(--transition-fast);
}
.chat-send-btn:hover { background: var(--primary-600); }

/* ---- Call / Meeting Layout ---- */
.call-layout {
  position: fixed; inset: 0; background: var(--call-bg); z-index: var(--z-call);
  display: flex; flex-direction: column; animation: fadeIn var(--transition-fast);
}
.call-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-4) var(--space-6); color: #fff;
}
.call-body { flex: 1; display: flex; align-items: center; justify-content: center; position: relative; }
.call-footer { padding: var(--space-4) var(--space-6); }

.call-grid { display: grid; gap: var(--space-2); padding: var(--space-4); width: 100%; height: 100%; }
.call-grid.grid-1 { grid-template-columns: 1fr; }
.call-grid.grid-2 { grid-template-columns: repeat(2, 1fr); }
.call-grid.grid-4 { grid-template-columns: repeat(2, 1fr); grid-template-rows: repeat(2, 1fr); }
.call-grid.grid-6 { grid-template-columns: repeat(3, 1fr); grid-template-rows: repeat(2, 1fr); }
.call-grid.grid-9 { grid-template-columns: repeat(3, 1fr); grid-template-rows: repeat(3, 1fr); }

.call-participant {
  background: #1F2937; border-radius: var(--radius-lg); display: flex;
  align-items: center; justify-content: center; position: relative; overflow: hidden;
}
.call-participant-name {
  position: absolute; bottom: 8px; left: 8px; color: #fff; font-size: var(--text-sm);
  background: rgba(0,0,0,0.5); padding: 2px 8px; border-radius: var(--radius-sm);
}
.call-participant-muted {
  position: absolute; bottom: 8px; right: 8px; color: var(--error-500);
  background: rgba(0,0,0,0.5); padding: 4px; border-radius: var(--radius-sm);
}

.call-self-preview {
  position: absolute; bottom: 90px; right: 20px; width: 200px; height: 150px;
  background: #1F2937; border-radius: var(--radius-lg); border: 2px solid rgba(255,255,255,0.2);
  z-index: 5; overflow: hidden; cursor: move;
}

/* ---- Page Specific Layouts ---- */
.page-two-col { display: flex; gap: var(--space-6); }
.page-two-col .page-main { flex: 1; min-width: 0; }
.page-two-col .page-aside { width: 320px; flex-shrink: 0; }

/* ---- Stat Cards ---- */
.stat-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: var(--space-4); }
.stat-card {
  background: var(--bg-surface); border: 1px solid var(--border-color);
  border-radius: var(--radius-lg); padding: var(--space-4);
}
.stat-card-label { font-size: var(--text-sm); color: var(--text-tertiary); margin-bottom: var(--space-1); }
.stat-card-value { font-size: var(--text-2xl); font-weight: var(--weight-bold); color: var(--text-primary); }
.stat-card-change { font-size: var(--text-xs); margin-top: var(--space-1); }
.stat-card-change.up { color: var(--success-500); }
.stat-card-change.down { color: var(--error-500); }

/* ---- Toolbar ---- */
.toolbar {
  display: flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-4); background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color); flex-wrap: wrap;
}
.toolbar-group { display: flex; align-items: center; gap: var(--space-1); }
.toolbar-sep { width: 1px; height: 20px; background: var(--border-color); margin: 0 var(--space-1); }

/* ---- Tree View (for docs/org) ---- */
.tree-item {
  display: flex; align-items: center; gap: var(--space-2); padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm); cursor: pointer; font-size: var(--text-sm);
  transition: background var(--transition-fast);
}
.tree-item:hover { background: var(--bg-hover); }
.tree-item.active { background: var(--bg-active); color: var(--primary-500); }
.tree-toggle { width: 16px; text-align: center; color: var(--text-quaternary); flex-shrink: 0; }
.tree-children { padding-left: 20px; }

/* ---- Rich Text Editor ---- */
.editor-toolbar {
  display: flex; align-items: center; gap: var(--space-1); padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--border-color); flex-wrap: wrap;
  background: var(--bg-surface); position: sticky; top: 0; z-index: 10;
}
.editor-toolbar-btn {
  width: 32px; height: 32px; display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm); color: var(--text-secondary); cursor: pointer;
  transition: all var(--transition-fast);
}
.editor-toolbar-btn:hover { background: var(--bg-hover); color: var(--text-primary); }
.editor-toolbar-btn.active { background: var(--primary-50); color: var(--primary-500); }

.editor-content {
  padding: var(--space-6) var(--space-8); min-height: 400px; outline: none;
  font-size: var(--text-md); line-height: 1.8; color: var(--text-primary);
}
.editor-content h1 { font-size: var(--text-2xl); font-weight: var(--weight-bold); margin: var(--space-6) 0 var(--space-3); }
.editor-content h2 { font-size: var(--text-xl); font-weight: var(--weight-semibold); margin: var(--space-5) 0 var(--space-2); }
.editor-content h3 { font-size: var(--text-lg); font-weight: var(--weight-semibold); margin: var(--space-4) 0 var(--space-2); }
.editor-content p { margin-bottom: var(--space-3); }
.editor-content ul, .editor-content ol { padding-left: var(--space-6); margin-bottom: var(--space-3); }
.editor-content li { margin-bottom: var(--space-1); list-style: disc; }
.editor-content ol li { list-style: decimal; }
.editor-content blockquote {
  border-left: 3px solid var(--primary-300); padding-left: var(--space-4);
  color: var(--text-secondary); margin: var(--space-3) 0;
}
.editor-content code {
  background: var(--gray-100); padding: 1px 4px; border-radius: 3px;
  font-family: var(--font-mono); font-size: 0.9em;
}
.editor-content pre {
  background: var(--gray-900); color: #E5E7EB; padding: var(--space-4);
  border-radius: var(--radius-md); overflow-x: auto; margin: var(--space-3) 0;
  font-family: var(--font-mono); font-size: var(--text-sm); line-height: 1.6;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .sidebar { display: none; }
  .mobile-nav {
    display: flex; position: fixed; bottom: 0; left: 0; right: 0;
    background: var(--bg-surface); border-top: 1px solid var(--border-color);
    z-index: var(--z-sticky); justify-content: space-around; padding: var(--space-1) 0;
    padding-bottom: env(safe-area-inset-bottom);
  }
  .mobile-nav-item {
    display: flex; flex-direction: column; align-items: center; padding: var(--space-1) var(--space-2);
    color: var(--text-quaternary); font-size: 10px; gap: 2px; cursor: pointer;
    transition: color var(--transition-fast); position: relative;
  }
  .mobile-nav-item.active { color: var(--primary-500); }
  .mobile-nav-item .nav-icon { font-size: 22px; }

  .panel-col { display: none; }
  .panel-col.mobile-show { display: flex; position: fixed; inset: 0; z-index: var(--z-overlay); width: 100%; }
  .info-panel { display: none; }
  .info-panel.mobile-show { display: flex; position: fixed; inset: 0; z-index: var(--z-overlay); width: 100%; }

  .content-padded { padding: var(--space-4); }
  .stat-cards { grid-template-columns: repeat(2, 1fr); }
  .page-two-col { flex-direction: column; }
  .page-two-col .page-aside { width: 100%; }

  .content-body { padding-bottom: 60px; }

  .call-self-preview { width: 120px; height: 90px; bottom: 80px; right: 12px; }
}

@media (min-width: 769px) {
  .mobile-nav { display: none; }
}

@media (max-width: 1024px) {
  .info-panel { display: none; }
}

/* ---- Full Page Layout (Login/Register) ---- */
.page-full {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #1E2235 0%, #2B3A67 50%, #1E2235 100%);
  padding: var(--space-6);
}
.page-full::before {
  content: ''; position: fixed; inset: 0;
  background: radial-gradient(circle at 30% 20%, rgba(43,92,230,0.15) 0%, transparent 50%),
              radial-gradient(circle at 70% 80%, rgba(99,102,241,0.1) 0%, transparent 50%);
  pointer-events: none;
}

.auth-card {
  background: var(--bg-surface); border-radius: var(--radius-xl); padding: var(--space-10);
  width: 100%; max-width: 440px; box-shadow: var(--shadow-xl); position: relative;
  z-index: 1; animation: fadeInUp 0.5s ease;
}
.auth-logo {
  display: flex; align-items: center; justify-content: center; gap: var(--space-3);
  margin-bottom: var(--space-8);
}
.auth-logo-icon {
  width: 48px; height: 48px; background: var(--primary-500); border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center; color: #fff;
  font-size: 24px; font-weight: var(--weight-bold);
}
.auth-logo-text { font-size: var(--text-xl); font-weight: var(--weight-bold); color: var(--text-primary); }
.auth-title { font-size: var(--text-lg); font-weight: var(--weight-semibold); text-align: center; margin-bottom: var(--space-6); }
.auth-footer { text-align: center; margin-top: var(--space-6); font-size: var(--text-sm); color: var(--text-tertiary); }
.auth-footer a { color: var(--primary-500); font-weight: var(--weight-medium); }
.auth-footer a:hover { text-decoration: underline; }

.auth-divider {
  display: flex; align-items: center; gap: var(--space-3); margin: var(--space-6) 0;
  font-size: var(--text-sm); color: var(--text-quaternary);
}
.auth-divider::before, .auth-divider::after { content:''; flex: 1; height: 1px; background: var(--divider); }

.sso-buttons { display: flex; flex-direction: column; gap: var(--space-3); }
.sso-btn {
  display: flex; align-items: center; justify-content: center; gap: var(--space-2);
  padding: 10px; border: 1px solid var(--border-color); border-radius: var(--radius-md);
  font-weight: var(--weight-medium); color: var(--text-primary); cursor: pointer;
  transition: all var(--transition-fast);
}
.sso-btn:hover { background: var(--bg-hover); border-color: var(--gray-300); }