/* 管理后台样式 */
.admin-body {
  background: #f5f6fa;
}

.admin-layout {
  display: flex;
  min-height: 100vh;
}

/* 侧边栏 */
.admin-sidebar {
  width: 260px;
  background: linear-gradient(180deg, #2d3436 0%, #1e272e 100%);
  color: white;
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
  z-index: 100;
}

.admin-logo {
  padding: 24px 20px;
  font-size: 18px;
  font-weight: 700;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  gap: 10px;
}

.admin-logo span {
  font-size: 24px;
}

.admin-nav {
  flex: 1;
  padding: 20px 0;
}

.admin-nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  color: rgba(255,255,255,0.7);
  transition: all 0.2s;
  border-left: 3px solid transparent;
}

.admin-nav-item:hover {
  background: rgba(255,255,255,0.1);
  color: white;
}

.admin-nav-item.active {
  background: rgba(108, 92, 231, 0.3);
  color: white;
  border-left-color: #6C5CE7;
}

.admin-user {
  padding: 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  gap: 12px;
}

.admin-user img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
}

.admin-user > div {
  flex: 1;
}

.admin-user-role {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
}

.admin-user button {
  color: rgba(255,255,255,0.5);
  padding: 4px 8px;
  border-radius: 4px;
}

.admin-user button:hover {
  background: rgba(255,255,255,0.1);
  color: white;
}

/* 主内容 */
.admin-main {
  flex: 1;
  margin-left: 260px;
  padding: 24px;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}

.admin-header h1 {
  font-size: 28px;
  font-weight: 700;
}

.admin-header span {
  color: var(--text-secondary);
}

/* 统计卡片 */
.admin-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.admin-stat-card {
  background: white;
  border-radius: 12px;
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.admin-stat-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}

.admin-stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
}

.admin-stat-label {
  color: var(--text-secondary);
  font-size: 14px;
}

/* 区域 */
.admin-section {
  background: white;
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.admin-section h2 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 20px;
}

/* 表格 */
.admin-table {
  width: 100%;
  border-collapse: collapse;
}

.admin-table th,
.admin-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.admin-table th {
  background: var(--hover);
  font-weight: 600;
  font-size: 14px;
  color: var(--text-secondary);
}

.admin-table tr:hover {
  background: var(--hover);
}

.admin-table img {
  width: 60px;
  height: 80px;
  object-fit: cover;
  border-radius: 4px;
}

.admin-table .cover-thumb {
  width: 50px;
  height: 50px;
  border-radius: 4px;
  object-fit: cover;
}

/* 表单 */
.admin-form {
  display: grid;
  gap: 20px;
}

.admin-form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

/* 按钮组 */
.admin-actions {
  display: flex;
  gap: 8px;
}

.admin-actions button {
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 13px;
}

.admin-actions .btn-edit {
  background: var(--primary);
  color: white;
}

.admin-actions .btn-delete {
  background: #e74c3c;
  color: white;
}

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

.admin-login-box {
  background: white;
  border-radius: 16px;
  padding: 48px;
  width: 400px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}

.admin-login-logo {
  text-align: center;
  font-size: 48px;
  margin-bottom: 24px;
}

.admin-login-box h1 {
  text-align: center;
  font-size: 24px;
  margin-bottom: 32px;
}

/* 响应式 */
@media (max-width: 1200px) {
  .admin-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .admin-sidebar {
    transform: translateX(-100%);
  }
  .admin-main {
    margin-left: 0;
  }
  .admin-stats {
    grid-template-columns: 1fr;
  }
  .admin-form-row {
    grid-template-columns: 1fr;
  }
}

/* 分页 */
.admin-pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
}

.admin-pagination button {
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: white;
  cursor: pointer;
}

.admin-pagination button:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.admin-pagination button.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

/* 上传区域 */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 48px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
}

.upload-zone:hover {
  border-color: var(--primary);
  background: var(--hover);
}

.upload-zone-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.upload-zone-text {
  color: var(--text-secondary);
}

/* 文件列表 */
.file-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.file-item {
  background: var(--hover);
  border-radius: 8px;
  padding: 12px;
  text-align: center;
}

.file-item img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 4px;
  margin-bottom: 8px;
}

.file-item-name {
  font-size: 12px;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-item button {
  margin-top: 8px;
  color: #e74c3c;
  font-size: 12px;
}