/* ============================================================
   Layik 交友 - PC端布局样式
   侧边栏导航 220px固定 | 主内容区 max-width 1200px
   ============================================================ */

:root {
  --sidebar-width: 220px;
  --header-height: 60px;
  --pc-max-width: 1200px;
}

/* ========== PC端基础布局 ========== */
.pc-layout {
  display: flex;
  min-height: 100vh;
  background: var(--bg-secondary);
}

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

.pc-sidebar-header {
  padding: var(--spacing-lg) var(--spacing-md);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.pc-sidebar-logo {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-weight: 700;
  font-size: var(--font-lg);
  flex-shrink: 0;
}

.pc-sidebar-title {
  font-size: var(--font-md);
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
}

.pc-sidebar-subtitle {
  font-size: var(--font-xs);
  color: var(--text-tertiary);
}

.pc-sidebar-nav {
  flex: 1;
  padding: var(--spacing-md) 0;
  overflow-y: auto;
  overflow-x: hidden;
}

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

.pc-nav-group {
  margin-bottom: var(--spacing-md);
}

.pc-nav-group-title {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-xs);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pc-nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 12px var(--spacing-lg);
  font-size: var(--font-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  border-left: 3px solid transparent;
  text-decoration: none;
  position: relative;
}

.pc-nav-item:hover {
  background: var(--bg-secondary);
  color: var(--primary);
}

.pc-nav-item.active {
  background: rgba(255, 107, 107, 0.08);
  color: var(--primary);
  border-left-color: var(--primary);
  font-weight: 500;
}

.pc-nav-item-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.pc-nav-item-badge {
  position: absolute;
  right: var(--spacing-lg);
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  font-size: 11px;
  background: var(--danger);
  color: var(--text-white);
  border-radius: var(--radius-round);
  display: flex;
  align-items: center;
  justify-content: center;
}

.pc-sidebar-footer {
  padding: var(--spacing-md);
  border-top: 1px solid var(--border-light);
}

.pc-sidebar-user {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
}

.pc-sidebar-user:hover {
  background: var(--bg-secondary);
}

.pc-sidebar-user .avatar {
  width: 36px;
  height: 36px;
}

.pc-sidebar-user-info {
  flex: 1;
  min-width: 0;
}

.pc-sidebar-user-name {
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pc-sidebar-user-status {
  font-size: var(--font-xs);
  color: var(--success);
  display: flex;
  align-items: center;
  gap: 4px;
}

.pc-sidebar-user-status.offline {
  color: var(--text-tertiary);
}

.pc-sidebar-user-status::before {
  content: '';
  width: 6px;
  height: 6px;
  background: currentColor;
  border-radius: 50%;
}

/* ========== 主内容区 ========== */
.pc-main {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-width: 0;
  display: flex;
  flex-direction: column;
}

/* ========== 顶栏 ========== */
.pc-header {
  position: sticky;
  top: 0;
  height: var(--header-height);
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  padding: 0 var(--spacing-lg);
  z-index: 50;
  gap: var(--spacing-md);
}

.pc-header-search {
  flex: 1;
  max-width: 400px;
  position: relative;
}

.pc-header-search .input {
  padding-left: 40px;
  height: 38px;
}

.pc-header-search-icon {
  position: absolute;
  left: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  font-size: 16px;
}

.pc-header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-left: auto;
}

.pc-header-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  background: transparent;
}

.pc-header-btn:hover {
  background: var(--bg-secondary);
  color: var(--primary);
}

.pc-header-btn .badge {
  position: absolute;
  top: 2px;
  right: 2px;
  min-width: 16px;
  height: 16px;
  font-size: 10px;
  padding: 0 4px;
}

.pc-header-user {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 4px var(--spacing-sm) 4px 4px;
  border-radius: var(--radius-round);
  cursor: pointer;
  transition: var(--transition);
}

.pc-header-user:hover {
  background: var(--bg-secondary);
}

.pc-header-user .avatar {
  width: 32px;
  height: 32px;
}

.pc-header-user-name {
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--text-primary);
}

.pc-header-user-caret {
  color: var(--text-tertiary);
  font-size: 12px;
}

.pc-header-lang-switch {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  font-size: var(--font-xs);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.pc-header-lang-switch:hover {
  background: var(--border-light);
  color: var(--primary);
}

/* ========== 内容容器 ========== */
.pc-container {
  flex: 1;
  max-width: var(--pc-max-width);
  margin: 0 auto;
  padding: var(--spacing-lg);
  width: 100%;
}

.pc-page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.pc-page-title {
  font-size: var(--font-xl);
  font-weight: 600;
  color: var(--text-primary);
}

.pc-page-subtitle {
  font-size: var(--font-sm);
  color: var(--text-tertiary);
  margin-top: 4px;
}

.pc-page-actions {
  display: flex;
  gap: var(--spacing-sm);
}

/* ========== 桌面卡片布局 ========== */
.pc-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.pc-card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: var(--transition);
}

.pc-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.pc-card-header {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.pc-card-body {
  padding: var(--spacing-md);
}

.pc-card-footer {
  padding: var(--spacing-md);
  border-top: 1px solid var(--border-light);
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ========== 用户卡片网格 ========== */
.pc-user-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--spacing-lg);
}

.pc-user-card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}

.pc-user-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.pc-user-card-cover {
  width: 100%;
  height: 160px;
  background: linear-gradient(135deg, var(--primary-light), var(--secondary));
  position: relative;
  overflow: hidden;
}

.pc-user-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.pc-user-card-avatar {
  position: absolute;
  bottom: -24px;
  left: 50%;
  transform: translateX(-50%);
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 3px solid var(--bg-primary);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  background: var(--border-light);
}

.pc-user-card-body {
  padding: 32px var(--spacing-md) var(--spacing-md);
  text-align: center;
}

.pc-user-card-name {
  font-size: var(--font-md);
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.pc-user-card-name .gender-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  font-size: 12px;
  color: var(--text-white);
}

.pc-user-card-name .gender-icon.male { background: var(--info); }
.pc-user-card-name .gender-icon.female { background: var(--primary); }

.pc-user-card-meta {
  font-size: var(--font-sm);
  color: var(--text-tertiary);
  margin-top: 4px;
}

.pc-user-card-tags {
  margin-top: var(--spacing-sm);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px;
}

.pc-user-card-actions {
  padding: var(--spacing-sm) var(--spacing-md) var(--spacing-md);
  display: flex;
  gap: var(--spacing-sm);
}

.pc-user-card-actions .btn {
  flex: 1;
}

/* ========== 桌面表单布局 ========== */
.pc-form-container {
  max-width: 600px;
  margin: 0 auto;
}

.pc-form-section {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.pc-form-section-title {
  font-size: var(--font-md);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.pc-form-section-title::before {
  content: '';
  width: 3px;
  height: 16px;
  background: var(--primary);
  border-radius: 2px;
}

.pc-form-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: var(--spacing-md);
  align-items: start;
  margin-bottom: var(--spacing-md);
}

.pc-form-label {
  padding-top: 12px;
  font-size: var(--font-sm);
  color: var(--text-secondary);
  font-weight: 500;
  text-align: right;
}

.pc-form-label.required::after {
  content: '*';
  color: var(--danger);
  margin-left: 4px;
}

.pc-form-content {
  min-width: 0;
}

.pc-form-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-light);
  margin-top: var(--spacing-lg);
}

/* ========== 桌面双栏布局 ========== */
.pc-two-col {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-lg);
}

.pc-three-col {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: var(--spacing-lg);
}

/* ========== 表格样式 ========== */
.pc-table-wrapper {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

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

.pc-table thead {
  background: var(--bg-tertiary);
}

.pc-table th {
  padding: var(--spacing-md);
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--text-secondary);
  text-align: left;
  border-bottom: 1px solid var(--border-light);
}

.pc-table td {
  padding: var(--spacing-md);
  font-size: var(--font-sm);
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-light);
}

.pc-table tbody tr:hover {
  background: var(--bg-tertiary);
}

.pc-table tbody tr:last-child td {
  border-bottom: none;
}

/* ========== 统计卡片 ========== */
.pc-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.pc-stat-card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.pc-stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--text-white);
  flex-shrink: 0;
}

.pc-stat-icon.blue { background: var(--info); }
.pc-stat-icon.green { background: var(--success); }
.pc-stat-icon.orange { background: var(--warning); }
.pc-stat-icon.red { background: var(--danger); }

.pc-stat-info {
  flex: 1;
}

.pc-stat-value {
  font-size: var(--font-xxl);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.pc-stat-label {
  font-size: var(--font-sm);
  color: var(--text-tertiary);
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .pc-two-col {
    grid-template-columns: 1fr;
  }
  .pc-three-col {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .pc-sidebar {
    transform: translateX(-100%);
  }
  .pc-sidebar.open {
    transform: translateX(0);
  }
  .pc-main {
    margin-left: 0;
  }
  .pc-form-row {
    grid-template-columns: 1fr;
  }
  .pc-form-label {
    text-align: left;
    padding-top: 0;
  }
  .pc-header-search {
    display: none;
  }
  .pc-user-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: var(--spacing-md);
  }
}

/* ========== 工具 ========== */
.pc-divider {
  height: 1px;
  background: var(--border-light);
  margin: var(--spacing-md) 0;
}

.pc-text-muted {
  color: var(--text-tertiary);
  font-size: var(--font-sm);
}

.pc-skeleton {
  background: linear-gradient(90deg, var(--border-light) 25%, var(--bg-tertiary) 50%, var(--border-light) 75%);
  background-size: 200% 100%;
  animation: skeleton 1.5s ease infinite;
  border-radius: var(--radius-md);
}

@keyframes skeleton {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}