/* ========== 全局变量与重置 ========== */
:root {
  --bg-primary: #f5f7fa;
  --bg-secondary: #ffffff;
  --bg-sidebar: #fafbfc;
  --border-color: #e8ecf1;
  --text-primary: #2c3e50;
  --text-secondary: #6c757d;
  --text-muted: #adb5bd;
  --accent: #4a90e2;
  --accent-hover: #3a7bd5;
  --accent-light: #e8f0fe;
  --danger: #e74c3c;
  --danger-hover: #c0392b;
  --success: #27ae60;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --header-height: 60px;
  --sidebar-width: 220px;
  --footer-height: 40px;
  --transition: all 0.25s ease;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  color: var(--text-primary);
  background: var(--bg-primary);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--accent-hover);
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  outline: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 4px 12px rgba(74, 144, 226, 0.35);
}

.btn-secondary {
  background: var(--bg-primary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

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

.btn-danger {
  background: var(--danger);
  color: #fff;
}

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

.btn-block {
  width: 100%;
}

.btn-sm {
  padding: 6px 14px;
  font-size: 13px;
}

/* ========== 表单 ========== */
.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text-primary);
  background: var(--bg-secondary);
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.15);
}

.form-group textarea {
  resize: vertical;
  font-family: inherit;
}

.required {
  color: var(--danger);
}

.form-row {
  display: flex;
  gap: 16px;
}

.form-row .form-group {
  flex: 1;
}

/* ========== 工具类 ========== */
.hidden {
  display: none !important;
}

/* ========== 密码输入框 ========== */
.input-with-action {
  position: relative;
  display: flex;
  align-items: center;
}

.input-with-action input {
  padding-right: 44px;
}

.toggle-password {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  border-radius: var(--radius-sm);
  background: none;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}

.toggle-password:hover {
  color: var(--text-secondary);
  background: var(--bg-primary);
}

.toggle-password[aria-pressed="true"] {
  color: var(--accent);
}

/* ========== 登录页附加 ========== */
.login-link {
  margin-left: auto;
  font-size: 14px;
}

/* ========== 发布博客权限 ========== */
.publish-permission {
  margin-bottom: 20px;
}

/* ========== 登录页 ========== */
.login-page,
.register-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #e8f0fe 0%, #f5f7fa 50%, #fafbfc 100%);
}

.login-container,
.register-container {
  width: 100%;
  max-width: 440px;
  padding: 20px;
}

.register-container {
  max-width: 560px;
}

.login-card,
.register-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-lg);
}

.login-header,
.register-header {
  text-align: center;
  margin-bottom: 32px;
}

.login-header h1,
.register-header h1 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

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

.checkbox-group {
  display: flex;
  align-items: center;
}

.checkbox-label {
  display: flex !important;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 14px !important;
  color: var(--text-secondary) !important;
  user-select: none;
}

.checkbox-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

.login-footer,
.register-footer {
  text-align: center;
  margin-top: 20px;
  font-size: 14px;
  color: var(--text-secondary);
}

/* ========== 头像上传 ========== */
.avatar-upload {
  display: flex;
  align-items: center;
  gap: 16px;
}

.avatar-preview {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 2px dashed var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  overflow: hidden;
  transition: var(--transition);
  flex-shrink: 0;
}

.avatar-preview:hover {
  border-color: var(--accent);
}

.avatar-preview span {
  font-size: 12px;
  color: var(--text-muted);
}

.avatar-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ========== 主页布局 ========== */
.home-page {
  overflow: hidden;
  height: 100vh;
}

.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* ========== 顶部栏 ========== */
.header {
  height: var(--header-height);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
  z-index: 10;
}

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

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

.header-center {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.time-display {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.5px;
}

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

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

.user-info:hover {
  background: var(--bg-primary);
}

.user-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border-color);
  background: var(--bg-primary);
}

.user-info span {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}

.logout-btn {
  margin-left: 16px;
  padding: 6px 16px;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
}

.logout-btn:hover {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
}

/* ========== 主内容区 ========== */
.main-content {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ========== 左侧菜单 ========== */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  flex-shrink: 0;
  padding: 16px 0;
  overflow-y: auto;
}

.sidebar-menu {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 0 10px;
}

.menu-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  cursor: pointer;
}

.menu-item:hover {
  background: var(--accent-light);
  color: var(--accent);
}

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

.menu-item svg {
  flex-shrink: 0;
}

/* ========== 内容区 ========== */
.content {
  flex: 1;
  overflow-y: auto;
  padding: 24px 32px;
  background: var(--bg-primary);
}

.content-section {
  display: none;
}

.content-section.active {
  display: block;
}

.section-header {
  margin-bottom: 24px;
}

.section-header h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
}

/* ========== 博客列表 ========== */
.blog-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.blog-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid transparent;
}

.blog-item:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--accent-light);
  transform: translateY(-1px);
}

.blog-item-main {
  flex: 1;
  min-width: 0;
}

.blog-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.blog-content-preview {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-item-side {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  margin-left: 24px;
  flex-shrink: 0;
}

.blog-author {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.blog-time {
  font-size: 12px;
  color: var(--text-muted);
}

.blog-actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.blog-encrypted {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--accent);
  background: var(--accent-light);
  padding: 2px 8px;
  border-radius: 10px;
}

/* 推荐博客中的加密标签：红色警告，不可查看 */
.blog-encrypted-recom {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: #c0392b;
  background: #fdecea;
  padding: 2px 8px;
  border-radius: 10px;
}

/* 我的博客中的加密标签：自己可见，柔和样式 */
.blog-encrypted-mine {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: #6c757d;
  background: #e9ecef;
  padding: 2px 8px;
  border-radius: 10px;
}

.blog-private {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: #fff;
  background: #e67e22;
  padding: 2px 8px;
  border-radius: 10px;
  margin-left: 4px;
}

/* ========== 分页 ========== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
  padding: 16px 0;
}

.pagination .page-btn {
  min-width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
}

.pagination .page-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.pagination .page-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.pagination .page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.pagination .page-size-select {
  margin-left: 16px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
}

.pagination .page-size-select select {
  padding: 6px 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-primary);
  background: var(--bg-secondary);
  outline: none;
  cursor: pointer;
}

/* ========== 发布博客 ========== */
#publish-section .section-header {
  text-align: center;
}

.publish-form {
  max-width: 800px;
  margin: 0 auto;
}

/* ========== 个人信息 ========== */
.user-profile {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}

.profile-avatar {
  display: flex;
  justify-content: center;
  margin-bottom: 28px;
}

.profile-avatar img {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--border-color);
  background: var(--bg-primary);
}

.profile-info {
  max-width: 480px;
  margin: 0 auto 28px;
}

.info-item {
  display: flex;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--bg-primary);
  font-size: 14px;
}

.info-item:last-child {
  border-bottom: none;
}

.info-item label {
  width: 100px;
  color: var(--text-secondary);
  font-weight: 500;
  flex-shrink: 0;
}

.info-item span {
  color: var(--text-primary);
}

.profile-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
}

/* ========== 弹窗 ========== */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(2px);
}

.modal.show {
  display: flex;
}

.modal-content {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 460px;
  box-shadow: var(--shadow-lg);
  animation: modalIn 0.25s ease;
}

.modal-content--wide {
  max-width: 700px;
}

.modal-content--narrow {
  max-width: 380px;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: translateY(-20px) scale(0.96);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

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

.modal-header h3 {
  font-size: 18px;
  font-weight: 600;
}

.modal-close {
  font-size: 22px;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
  line-height: 1;
  background: none;
  border: none;
  padding: 0 4px;
}

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

.modal-body {
  padding: 24px;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  padding-top: 8px;
}

/* ========== 底部栏 ========== */
.footer {
  height: var(--footer-height);
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.footer p {
  font-size: 12px;
  color: var(--text-muted);
}

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

.empty-state svg {
  margin-bottom: 16px;
  opacity: 0.4;
}

.empty-state p {
  font-size: 14px;
}

/* ========== 加载状态 ========== */
.loading {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
  font-size: 14px;
}

.loading-spinner {
  display: inline-block;
  width: 28px;
  height: 28px;
  border: 3px solid var(--border-color);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 12px;
}

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

/* ========== 提示消息 ========== */
.toast {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(-100px);
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  z-index: 2000;
  transition: transform 0.3s ease;
  box-shadow: var(--shadow-md);
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}

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

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

.toast.info {
  background: var(--accent);
  color: #fff;
}

/* ========== 确认对话框 ========== */
.confirm-dialog {
  text-align: center;
}

.confirm-dialog p {
  font-size: 15px;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.confirm-dialog .confirm-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
}

/* ========== 自定义滚动条 ========== */
.content::-webkit-scrollbar,
.sidebar::-webkit-scrollbar {
  width: 6px;
}

.content::-webkit-scrollbar-track,
.sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.content::-webkit-scrollbar-thumb,
.sidebar::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

.content::-webkit-scrollbar-thumb:hover,
.sidebar::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ========== 博客详情页 ========== */
.detail-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.detail-header h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
}

.detail-meta {
  display: flex;
  gap: 24px;
  padding: 16px 20px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  flex-wrap: wrap;
  align-items: center;
}

.detail-meta-item {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  color: var(--text-secondary);
}

.detail-label {
  color: var(--text-muted);
  font-weight: 500;
}

.detail-content {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 32px;
  min-height: 300px;
  box-shadow: var(--shadow-sm);
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-primary);
  white-space: pre-wrap;
  word-break: break-word;
}

.detail-encrypted-hint {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
  font-size: 15px;
}

/* ========== 博客列表项交互 ========== */
.blog-item {
  cursor: pointer;
}

.blog-item .blog-actions .btn {
  pointer-events: auto;
}