/**
 * 全局样式 - GEO运营管理平台
 * 包含CSS变量、布局、通用组件
 */

:root {
  --primary: #2563EB;
  --primary-hover: #1D4ED8;
  --primary-light: #EFF6FF;
  --primary-bg: rgba(37, 99, 235, 0.08);
  --success: #10B981;
  --success-light: #ECFDF5;
  --warning: #F59E0B;
  --warning-light: #FFFBEB;
  --danger: #EF4444;
  --danger-light: #FEF2F2;
  --text-primary: #111827;
  --text-secondary: #6B7280;
  --text-muted: #9CA3AF;
  --border: #E5E7EB;
  --border-light: #F3F4F6;
  --bg-page: #F9FAFB;
  --bg-card: #FFFFFF;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --header-h: 64px;
  --sidebar-w: 240px;
  --sidebar-collapsed: 64px;
  --transition: all 0.2s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.6;
  overflow: hidden;
  height: 100vh;
}

/* ═══════ 登录页 ═══════ */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 20px;
}

.login-card {
  background: white;
  border-radius: var(--radius-xl);
  padding: 72px 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-lg);
}

.login-header {
  text-align: center;
  margin-bottom: 36px;
}

.login-logo {
  width: 64px;
  height: 64px;
  background: var(--primary);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: white;
  font-size: 28px;
}

.login-header h1 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.login-header p {
  font-size: 14px;
  color: var(--text-secondary);
}

.login-form .form-group {
  margin-bottom: 20px;
}

.login-form label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.login-form label i {
  margin-right: 4px;
}

.login-form input {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-size: 15px;
  transition: var(--transition);
  outline: none;
}

.login-form input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-bg);
}

.login-error {
  text-align: center;
  color: var(--danger);
  font-size: 13px;
  margin-top: 12px;
  padding: 8px;
  background: var(--danger-light);
  border-radius: var(--radius-sm);
}

.login-footer {
  text-align: center;
  margin-top: 24px;
  font-size: 12px;
  color: var(--text-muted);
}

/* ═══════ 应用布局 ═══════ */
.app-container {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  grid-template-rows: var(--header-h) 1fr;
  grid-template-areas:
    "header header"
    "sidebar main";
  height: 100vh;
  overflow: hidden;
}

.app-container.sidebar-collapsed {
  grid-template-columns: var(--sidebar-collapsed) 1fr;
}

/* ═══════ 顶部导航 ═══════ */
.top-header {
  grid-area: header;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.sidebar-toggle {
  background: none;
  border: none;
  font-size: 20px;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.sidebar-toggle:hover {
  background: var(--border-light);
  color: var(--text-primary);
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
}

.header-logo i {
  font-size: 22px;
}

.header-center {
  display: flex;
  align-items: center;
}

.current-client-switch {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-page);
  border-radius: 20px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.current-client-switch:hover {
  background: var(--primary-light);
  color: var(--primary);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-icon-btn {
  background: none;
  border: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text-secondary);
  cursor: pointer;
  position: relative;
  transition: var(--transition);
}

.header-icon-btn:hover {
  background: var(--border-light);
  color: var(--text-primary);
}

.badge {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 16px;
  height: 16px;
  background: var(--danger);
  color: white;
  border-radius: 50%;
  font-size: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
}

.user-info:hover {
  background: var(--border-light);
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
}

.user-meta {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.user-role {
  font-size: 11px;
  color: var(--text-muted);
}

/* ═══════ 左侧菜单 ═══════ */
.sidebar {
  grid-area: sidebar;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 16px 12px;
  overflow: hidden;
  transition: var(--transition);
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
  overflow-y: auto;
  min-height: 0;
}

.sidebar-nav::-webkit-scrollbar {
  width: 4px;
}
.sidebar-nav::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}
.sidebar-nav::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  white-space: nowrap;
}

.nav-item:hover {
  background: var(--border-light);
  color: var(--text-primary);
}

.nav-item.active {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}

.nav-item i {
  font-size: 20px;
  width: 20px;
  flex-shrink: 0;
}

.sidebar-collapsed .nav-item span,
.sidebar-collapsed .sidebar-version {
  display: none;
}

.sidebar-footer {
  padding: 12px 16px;
}

.sidebar-version {
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
}

/* ═══════ 主内容区 ═══════ */
.main-content {
  grid-area: main;
  padding: 24px;
  overflow-y: auto;
  overflow-x: hidden;
}

/* ═══════ 通用组件 ═══════ */

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.btn-primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
  background: white;
  color: var(--primary);
  border-color: var(--primary);
}

.btn-secondary:hover {
  background: var(--primary-light);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border);
}

.btn-ghost:hover {
  background: var(--border-light);
  color: var(--text-primary);
}

.btn-danger {
  background: white;
  color: var(--danger);
  border-color: var(--danger);
}

.btn-danger:hover {
  background: var(--danger-light);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.btn-block {
  width: 100%;
  padding: 14px;
  font-size: 16px;
}

.btn-success {
  background: var(--success);
  color: white;
  border-color: var(--success);
}

.btn-success:hover {
  background: #059669;
}

/* 卡片 */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px 0;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

.card-body {
  padding: 20px 24px;
}

/* 表格 */
.table-wrapper {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table thead th {
  background: var(--bg-page);
  padding: 12px 16px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-align: left;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
}

.data-table tbody tr {
  transition: var(--transition);
}

.data-table tbody tr:nth-child(even) {
  background: rgba(249, 250, 251, 0.5);
}

.data-table tbody tr:hover {
  background: var(--primary-light);
}

.data-table td {
  padding: 14px 16px;
  font-size: 14px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-primary);
}

.data-table .actions {
  display: flex;
  gap: 8px;
}

.data-table .action-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 16px;
  transition: var(--transition);
}

.data-table .action-btn:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.data-table .action-btn.danger:hover {
  color: var(--danger);
  background: var(--danger-light);
}

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}

.tag-primary {
  background: var(--primary-light);
  color: var(--primary);
}

.tag-success {
  background: var(--success-light);
  color: var(--success);
}

.tag-warning {
  background: var(--warning-light);
  color: var(--warning);
}

.tag-danger {
  background: var(--danger-light);
  color: var(--danger);
}

.tag-muted {
  background: var(--border-light);
  color: var(--text-secondary);
}

/* 表单 */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--text-primary);
  background: white;
  transition: var(--transition);
  outline: none;
  font-family: inherit;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-bg);
}

.form-textarea {
  min-height: 80px;
  resize: vertical;
}

/* 模态框 */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  animation: fadeIn 0.2s ease;
}

.modal {
  background: white;
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.3s ease;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-light);
}

.modal-title {
  font-size: 18px;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  font-size: 20px;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
}

.modal-close:hover {
  color: var(--text-primary);
  background: var(--border-light);
}

.modal-body {
  padding: 24px;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  padding: 16px 24px;
  border-top: 1px solid var(--border-light);
}

/* Toast提示 */
.toast-container {
  position: fixed;
  top: 80px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 14px 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideInRight 0.3s ease;
  min-width: 280px;
}

.toast-success {
  background: var(--success);
  color: white;
}

.toast-error {
  background: var(--danger);
  color: white;
}

.toast-info {
  background: var(--primary);
  color: white;
}

/* 页面标题 */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.page-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
}

.page-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* 数据网格 */
.grid {
  display: grid;
  gap: 20px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }

/* 趋势箭头 */
.trend-up { color: var(--success); }
.trend-down { color: var(--danger); }
.trend-flat { color: var(--text-muted); }

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state i {
  font-size: 72px;
  margin-bottom: 16px;
  display: block;
}

/* 加载 */
.loading-spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* 动画 */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(100px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* 进度条 */
.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--border-light);
  border-radius: 3px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.5s ease;
}

/* 可见性指数 */
.visibility-score {
  font-size: 24px;
  font-weight: 700;
}

.visibility-score.high { color: var(--success); }
.visibility-score.medium { color: var(--warning); }
.visibility-score.low { color: var(--danger); }

/* 响应式 */
@media (max-width: 768px) {
  .grid-3, .grid-4, .grid-5 {
    grid-template-columns: 1fr;
  }
  .app-container {
    grid-template-columns: 1fr;
    grid-template-areas:
      "header"
      "main";
  }
  .sidebar {
    display: none;
  }
}

/* ═══════ 子菜单折叠/展开 ═══════ */
.nav-item.has-submenu {
  position: relative;
}

.nav-item.has-submenu .submenu-arrow {
  position: absolute;
  right: 12px;
  font-size: 16px;
  transition: transform 0.3s ease;
}

.nav-item.has-submenu.expanded .submenu-arrow {
  transform: rotate(180deg);
}

.submenu {
  display: none;
}

.submenu.expanded {
  display: block;
}

.submenu .nav-item {
  padding: 8px 16px 8px 72px !important;
  font-size: 13px !important;
  opacity: 0.9;
  line-height: 1.5;
}

.submenu .nav-item:hover {
  background: rgba(255,255,255,0.08);
  color: var(--primary);
}