/**
 * RTNC 前端样式 - Material Design 3 设计体系
 * 花名阅读者 - Reader of The Name of China
 */

/* ===== M3 颜色令牌 (浅色主题) ===== */
:root {
  --md-sys-color-primary: #6750A4;
  --md-sys-color-on-primary: #FFFFFF;
  --md-sys-color-primary-container: #EADDFF;
  --md-sys-color-on-primary-container: #21005D;
  --md-sys-color-secondary: #625B71;
  --md-sys-color-on-secondary: #FFFFFF;
  --md-sys-color-secondary-container: #E8DEF8;
  --md-sys-color-on-secondary-container: #1D192B;
  --md-sys-color-tertiary: #7D5260;
  --md-sys-color-tertiary-container: #FFD8E4;
  --md-sys-color-error: #B3261E;
  --md-sys-color-on-error: #FFFFFF;
  --md-sys-color-error-container: #F9DEDC;
  --md-sys-color-surface: #FFFBFE;
  --md-sys-color-on-surface: #1C1B1F;
  --md-sys-color-surface-variant: #E7E0EC;
  --md-sys-color-on-surface-variant: #49454F;
  --md-sys-color-outline: #79747E;
  --md-sys-color-outline-variant: #CAC4D0;
  --md-sys-color-background: #FFFBFE;
  --md-sys-color-on-background: #1C1B1F;
  --md-sys-color-surface-container-low: #F7F2FA;
  --md-sys-color-surface-container: #F3EDF7;
  --md-sys-color-surface-container-high: #ECE6F0;
  --md-sys-color-inverse-surface: #313033;
  --md-sys-color-inverse-on-surface: #F4EFF4;
  
  /* 状态徽章颜色 */
  --status-draft: #6750A4;
  --status-pending: #E3930B;
  --status-published: #386A20;
  --status-rejected: #BA1A1A;
  --status-hidden: #49454F;

  /* 排版 */
  --md-sys-typescale-display-large: 400 57px/64px 'Noto Sans SC', sans-serif;
  --md-sys-typescale-headline-large: 400 32px/40px 'Noto Sans SC', sans-serif;
  --md-sys-typescale-title-large: 400 22px/28px 'Noto Sans SC', sans-serif;
  --md-sys-typescale-title-medium: 500 16px/24px 'Noto Sans SC', sans-serif;
  --md-sys-typescale-body-large: 400 16px/24px 'Noto Sans SC', sans-serif;
  --md-sys-typescale-body-medium: 400 14px/20px 'Noto Sans SC', sans-serif;
  --md-sys-typescale-body-small: 400 12px/16px 'Noto Sans SC', sans-serif;
  --md-sys-typescale-label-large: 500 14px/20px 'Noto Sans SC', sans-serif;

  /* 形状 */
  --md-sys-shape-corner-none: 0px;
  --md-sys-shape-corner-extra-small: 4px;
  --md-sys-shape-corner-small: 8px;
  --md-sys-shape-corner-medium: 12px;
  --md-sys-shape-corner-large: 16px;
  --md-sys-shape-corner-extra-large: 28px;
  --md-sys-shape-corner-full: 100px;

  /* 间距 */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
}

/* ===== 深色主题 ===== */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --md-sys-color-primary: #D0BCFF;
    --md-sys-color-on-primary: #381E72;
    --md-sys-color-primary-container: #4F378B;
    --md-sys-color-on-primary-container: #EADDFF;
    --md-sys-color-secondary: #CCC2DC;
    --md-sys-color-on-secondary: #332D41;
    --md-sys-color-secondary-container: #4A4458;
    --md-sys-color-on-secondary-container: #E8DEF8;
    --md-sys-color-tertiary: #EFB8C8;
    --md-sys-color-tertiary-container: #633B48;
    --md-sys-color-error: #F2B8B5;
    --md-sys-color-on-error: #601410;
    --md-sys-color-error-container: #8C1D18;
    --md-sys-color-surface: #1C1B1F;
    --md-sys-color-on-surface: #E6E1E5;
    --md-sys-color-surface-variant: #49454F;
    --md-sys-color-on-surface-variant: #CAC4D0;
    --md-sys-color-outline: #938F99;
    --md-sys-color-outline-variant: #49454F;
    --md-sys-color-background: #1C1B1F;
    --md-sys-color-on-background: #E6E1E5;
    --md-sys-color-surface-container-low: #211F26;
    --md-sys-color-surface-container: #2B2930;
    --md-sys-color-surface-container-high: #36343B;
    --md-sys-color-inverse-surface: #E6E1E5;
    --md-sys-color-inverse-on-surface: #313033;
    --status-draft: #D0BCFF;
    --status-pending: #F5C542;
    --status-published: #A3D485;
    --status-rejected: #F2B8B5;
    --status-hidden: #CAC4D0;
  }
}

:root[data-theme="dark"] {
  --md-sys-color-primary: #D0BCFF;
  --md-sys-color-on-primary: #381E72;
  --md-sys-color-primary-container: #4F378B;
  --md-sys-color-on-primary-container: #EADDFF;
  --md-sys-color-secondary: #CCC2DC;
  --md-sys-color-on-secondary: #332D41;
  --md-sys-color-secondary-container: #4A4458;
  --md-sys-color-on-secondary-container: #E8DEF8;
  --md-sys-color-tertiary: #EFB8C8;
  --md-sys-color-tertiary-container: #633B48;
  --md-sys-color-error: #F2B8B5;
  --md-sys-color-on-error: #601410;
  --md-sys-color-error-container: #8C1D18;
  --md-sys-color-surface: #1C1B1F;
  --md-sys-color-on-surface: #E6E1E5;
  --md-sys-color-surface-variant: #49454F;
  --md-sys-color-on-surface-variant: #CAC4D0;
  --md-sys-color-outline: #938F99;
  --md-sys-color-outline-variant: #49454F;
  --md-sys-color-background: #1C1B1F;
  --md-sys-color-on-background: #E6E1E5;
  --md-sys-color-surface-container-low: #211F26;
  --md-sys-color-surface-container: #2B2930;
  --md-sys-color-surface-container-high: #36343B;
  --md-sys-color-inverse-surface: #E6E1E5;
  --md-sys-color-inverse-on-surface: #313033;
  --status-draft: #D0BCFF;
  --status-pending: #F5C542;
  --status-published: #A3D485;
  --status-rejected: #F2B8B5;
  --status-hidden: #CAC4D0;
}

/* ===== 全局重置 ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Noto Sans SC', system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  background-color: var(--md-sys-color-background);
  color: var(--md-sys-color-on-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: var(--md-sys-color-primary);
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
}

/* ===== 按钮间距修复 ===== */
md-filled-button,
md-outlined-button,
md-tonal-button,
md-text-button {
  padding-left: 16px !important;
  padding-right: 16px !important;
  min-width: 64px !important;
}

md-filled-button md-icon,
md-outlined-button md-icon,
md-tonal-button md-icon {
  margin-right: 8px !important;
  margin-left: -4px !important;
}

/* ===== App Bar ===== */
.md-top-app-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  display: flex;
  align-items: center;
  padding: 0 var(--spacing-md);
  background-color: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  box-shadow: 0 1px 3px 1px rgba(0,0,0,0.15), 0 1px 2px 0 rgba(0,0,0,0.3);
  z-index: 100;
}

.md-top-app-bar h1 {
  font: var(--md-sys-typescale-title-large);
  flex: 1;
  margin-left: var(--spacing-md);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.app-bar-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

/* ===== 主内容区 ===== */
#main-content {
  padding-top: 64px;
  min-height: 100vh;
  padding-bottom: 80px;
}

/* ===== 底部导航 ===== */
#bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
}

/* ===== 侧边栏 ===== */
#sidebar {
  position: fixed;
  top: 64px;
  left: 0;
  bottom: 0;
  width: 280px;
  background-color: var(--md-sys-color-surface-container-low);
  border-right: 1px solid var(--md-sys-color-outline-variant);
  overflow-y: auto;
  z-index: 90;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
}

#sidebar.open {
  transform: translateX(0);
  box-shadow: 4px 0 16px rgba(0,0,0,0.12);
}

/* 移动端侧边栏背景遮罩 */
#sidebar-backdrop {
  position: fixed;
  inset: 0;
  top: 64px;
  background: rgba(0, 0, 0, 0.4);
  z-index: 85;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

#sidebar-backdrop.visible {
  opacity: 1;
  pointer-events: auto;
}

/* 桌面端 (>= 905px)：侧边栏展开时，主内容右移让出空间 */
@media (min-width: 905px) {
  #main-content.sidebar-shifted {
    margin-left: 280px;
    transition: margin-left 0.3s ease;
  }
  #sidebar-backdrop {
    display: none !important;
  }
}

#sidebar-nav {
  padding: var(--spacing-sm) 0;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--md-sys-color-on-surface-variant);
  font: var(--md-sys-typescale-label-large);
  border-radius: var(--md-sys-shape-corner-full);
  margin: 2px var(--spacing-sm);
  transition: background-color 0.2s;
}

.nav-link:hover {
  background-color: var(--md-sys-color-surface-variant);
  color: var(--md-sys-color-on-surface);
}

.nav-link.active {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}

.nav-link md-icon {
  font-size: 24px;
}

.nav-divider {
  height: 1px;
  background-color: var(--md-sys-color-outline-variant);
  margin: var(--spacing-sm) var(--spacing-md);
}

/* ===== 页面容器 ===== */
.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-lg);
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== 卡片 ===== */
.card {
  background-color: var(--md-sys-color-surface-container-low);
  border-radius: var(--md-sys-shape-corner-medium);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  box-shadow: 0 1px 2px rgba(0,0,0,0.3), 0 1px 3px 1px rgba(0,0,0,0.15);
}

.card:hover {
  box-shadow: 0 2px 4px rgba(0,0,0,0.3), 0 4px 8px 3px rgba(0,0,0,0.15);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
}

.card-title {
  font: var(--md-sys-typescale-title-large);
  color: var(--md-sys-color-on-surface);
}

.card-subtitle {
  font: var(--md-sys-typescale-body-medium);
  color: var(--md-sys-color-on-surface-variant);
}

/* ===== 作品卡片 ===== */
.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

.work-card {
  background-color: var(--md-sys-color-surface-container-low);
  border-radius: var(--md-sys-shape-corner-medium);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
  cursor: pointer;
  box-shadow: 0 1px 2px rgba(0,0,0,0.3), 0 1px 3px 1px rgba(0,0,0,0.15);
}

.work-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 2px 4px rgba(0,0,0,0.3), 0 4px 8px 3px rgba(0,0,0,0.15);
}

.work-card-cover {
  width: 100%;
  height: 160px;
  object-fit: cover;
  background-color: var(--md-sys-color-surface-variant);
}

.work-card-content {
  padding: var(--spacing-md);
}

.work-card-title {
  font: var(--md-sys-typescale-title-medium);
  color: var(--md-sys-color-on-surface);
  margin-bottom: var(--spacing-xs);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.work-card-summary {
  font: var(--md-sys-typescale-body-small);
  color: var(--md-sys-color-on-surface-variant);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--spacing-sm);
}

.work-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font: var(--md-sys-typescale-body-small);
  color: var(--md-sys-color-on-surface-variant);
}

/* ===== 状态徽章 ===== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: var(--md-sys-shape-corner-full);
  font-size: 12px;
  font-weight: 500;
}

.badge-draft {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.badge-pending {
  background-color: #FFDEAD;
  color: #5C3C00;
}

.badge-published {
  background-color: #A3D485;
  color: #1B300A;
}

.badge-rejected {
  background-color: var(--md-sys-color-error-container);
  color: var(--md-sys-color-on-error-container, #601410);
}

.badge-hidden {
  background-color: var(--md-sys-color-surface-variant);
  color: var(--md-sys-color-on-surface-variant);
}

@media (prefers-color-scheme: dark) {
  .badge-pending {
    background-color: #5C4800;
    color: #F5C542;
  }
  .badge-published {
    background-color: #1B300A;
    color: #A3D485;
  }
}

/* ===== 表单 ===== */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  font: var(--md-sys-typescale-label-large);
  color: var(--md-sys-color-on-surface-variant);
  margin-bottom: var(--spacing-xs);
}

.form-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
  margin-top: var(--spacing-lg);
}

/* ===== Markdown 预览面板 ===== */
.md-preview-panel {
  background-color: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-sys-shape-corner-medium);
  padding: var(--spacing-lg);
  min-height: 300px;
  max-height: 60vh;
  overflow-y: auto;
}

/* ===== Markdown 文章渲染样式 ===== */
.markdown-body {
  line-height: 1.8;
  color: var(--md-sys-color-on-surface);
}

.markdown-body h1, .markdown-body h2, .markdown-body h3,
.markdown-body h4, .markdown-body h5, .markdown-body h6 {
  margin-top: 1.5em;
  margin-bottom: 0.5em;
  font-weight: 600;
  line-height: 1.25;
}

.markdown-body h1 { font-size: 2em; border-bottom: 1px solid var(--md-sys-color-outline-variant); padding-bottom: 0.3em; }
.markdown-body h2 { font-size: 1.5em; border-bottom: 1px solid var(--md-sys-color-outline-variant); padding-bottom: 0.3em; }
.markdown-body h3 { font-size: 1.25em; }
.markdown-body h4 { font-size: 1em; }
.markdown-body h5 { font-size: 0.875em; }
.markdown-body h6 { font-size: 0.85em; color: var(--md-sys-color-on-surface-variant); }

.markdown-body p { margin-bottom: 1em; }

.markdown-body a {
  color: var(--md-sys-color-primary);
  text-decoration: none;
}
.markdown-body a:hover { text-decoration: underline; }

.markdown-body code {
  background-color: var(--md-sys-color-surface-container-highest);
  padding: 0.2em 0.4em;
  border-radius: 3px;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 0.9em;
}

.markdown-body pre {
  background-color: var(--md-sys-color-surface-container-highest);
  padding: var(--spacing-md);
  border-radius: var(--md-sys-shape-corner-small);
  overflow-x: auto;
  margin-bottom: 1em;
}
.markdown-body pre code {
  background: none;
  padding: 0;
  font-size: 0.9em;
  line-height: 1.5;
}

.markdown-body blockquote {
  border-left: 4px solid var(--md-sys-color-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  margin: 1em 0;
  color: var(--md-sys-color-on-surface-variant);
  background-color: var(--md-sys-color-surface-container);
  border-radius: 0 var(--md-sys-shape-corner-small) var(--md-sys-shape-corner-small) 0;
}
.markdown-body blockquote p { margin-bottom: 0.5em; }

.markdown-body ul, .markdown-body ol {
  padding-left: 2em;
  margin-bottom: 1em;
}
.markdown-body li { margin-bottom: 0.3em; }

.markdown-body table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1em;
}
.markdown-body th, .markdown-body td {
  border: 1px solid var(--md-sys-color-outline-variant);
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
}
.markdown-body th {
  background-color: var(--md-sys-color-surface-container);
  font-weight: 600;
}
.markdown-body tr:nth-child(even) {
  background-color: var(--md-sys-color-surface-container-low);
}

.markdown-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--md-sys-shape-corner-medium);
  margin: 1em 0;
}

.markdown-body hr {
  border: none;
  border-top: 1px solid var(--md-sys-color-outline-variant);
  margin: 2em 0;
}

.markdown-body .task-list-item {
  list-style: none;
}
.markdown-body .task-list-item input {
  margin-right: var(--spacing-xs);
}

/* ===== 列表 ===== */
.list {
  list-style: none;
}

.list-item {
  display: flex;
  align-items: center;
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  gap: var(--spacing-md);
}

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

.list-item-content {
  flex: 1;
  min-width: 0;
}

.list-item-title {
  font: var(--md-sys-typescale-title-medium);
  color: var(--md-sys-color-on-surface);
}

.list-item-subtitle {
  font: var(--md-sys-typescale-body-small);
  color: var(--md-sys-color-on-surface-variant);
}

.list-item-actions {
  display: flex;
  gap: var(--spacing-xs);
}

/* ===== 空状态 ===== */
.empty-state {
  text-align: center;
  padding: var(--spacing-xxl) var(--spacing-lg);
  color: var(--md-sys-color-on-surface-variant);
}

.empty-state md-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-md);
  opacity: 0.6;
}

.empty-state p {
  font: var(--md-sys-typescale-body-large);
}

/* ===== 工具类 ===== */
.hidden { display: none !important; }
.text-center { text-align: center; }
.mt-md { margin-top: var(--spacing-md); }
.mb-md { margin-bottom: var(--spacing-md); }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }

/* ===== 加载状态 ===== */
.loading-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(0,0,0,0.3);
  z-index: 1000;
}

/* ===== 分页 ===== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

.pagination-btn {
  min-width: 40px;
  height: 40px;
  border-radius: var(--md-sys-shape-corner-full);
  border: 1px solid var(--md-sys-color-outline);
  background: transparent;
  color: var(--md-sys-color-on-surface);
  font: var(--md-sys-typescale-label-large);
  cursor: pointer;
  transition: background-color 0.2s;
}

.pagination-btn:hover {
  background-color: var(--md-sys-color-surface-variant);
}

.pagination-btn.active {
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  border-color: var(--md-sys-color-primary);
}

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

/* ===== 登录页 ===== */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 144px);
  padding: var(--spacing-lg);
}

.login-card {
  max-width: 400px;
  width: 100%;
  text-align: center;
  padding: var(--spacing-xxl) var(--spacing-lg);
}

.login-card h2 {
  font: var(--md-sys-typescale-headline-large);
  color: var(--md-sys-color-on-surface);
  margin-bottom: var(--spacing-sm);
}

.login-card p {
  font: var(--md-sys-typescale-body-large);
  color: var(--md-sys-color-on-surface-variant);
  margin-bottom: var(--spacing-xl);
}

/* ===== 作品详情页 ===== */
.work-detail {
  max-width: 800px;
  margin: 0 auto;
}

.work-detail-header {
  margin-bottom: var(--spacing-lg);
}

.work-detail-title {
  font: var(--md-sys-typescale-headline-large);
  color: var(--md-sys-color-on-surface);
  margin-bottom: var(--spacing-sm);
}

.work-detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  font: var(--md-sys-typescale-body-medium);
  color: var(--md-sys-color-on-surface-variant);
  margin-bottom: var(--spacing-md);
}

.work-detail-content {
  font: var(--md-sys-typescale-body-large);
  color: var(--md-sys-color-on-surface);
  line-height: 1.8;
  white-space: pre-wrap;
}

/* ===== 标签卡片 ===== */
.tags-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--spacing-md);
}

.tag-card {
  background-color: var(--md-sys-color-surface-container-low);
  border-radius: var(--md-sys-shape-corner-medium);
  padding: var(--spacing-lg);
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 1px 2px rgba(0,0,0,0.3), 0 1px 3px 1px rgba(0,0,0,0.15);
}

.tag-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 2px 4px rgba(0,0,0,0.3), 0 4px 8px 3px rgba(0,0,0,0.15);
}

.tag-card h3 {
  font: var(--md-sys-typescale-title-medium);
  color: var(--md-sys-color-on-surface);
  margin-bottom: var(--spacing-xs);
}

.tag-card p {
  font: var(--md-sys-typescale-body-small);
  color: var(--md-sys-color-on-surface-variant);
  margin-bottom: var(--spacing-sm);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tag-card-meta {
  font: var(--md-sys-typescale-body-small);
  color: var(--md-sys-color-on-surface-variant);
  opacity: 0.8;
}

/* ===== 搜索栏 ===== */
.search-bar {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.search-bar md-outlined-text-field {
  flex: 1;
}

/* ===== 响应式断点 ===== */
@media (min-width: 600px) {
  .works-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
  .tags-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }
}

@media (min-width: 905px) {
  #main-content {
    margin-left: 280px;
    padding-bottom: var(--spacing-lg);
  }
  
  #sidebar {
    transform: translateX(0) !important;
  }
  
  #bottom-nav {
    display: none;
  }
  
  #nav-btn {
    display: none;
  }
}

@media (max-width: 904px) {
  #sidebar {
    transform: translateX(-100%);
  }
  
  #sidebar.open {
    transform: translateX(0);
  }
}

/* ===== Snackbar ===== */
.snackbar {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--md-sys-color-inverse-surface);
  color: var(--md-sys-color-inverse-on-surface);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--md-sys-shape-corner-extra-small);
  font: var(--md-sys-typescale-body-medium);
  box-shadow: 0 3px 5px -1px rgba(0,0,0,0.2), 0 6px 10px 0 rgba(0,0,0,0.14);
  z-index: 200;
  animation: slideUp 0.3s ease;
  max-width: 90%;
}

@keyframes slideUp {
  from { opacity: 0; transform: translate(-50%, 20px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}

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

.custom-modal {
  background: var(--md-sys-color-surface-container-high);
  border-radius: var(--md-sys-shape-corner-large);
  width: 90%;
  max-width: 560px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 12px 6px rgba(0,0,0,0.15), 0 4px 4px 0 rgba(0,0,0,0.3);
  pointer-events: auto;
}

.custom-modal-header {
  padding: var(--spacing-lg);
  padding-bottom: var(--spacing-sm);
  font: var(--md-sys-typescale-headline-small, 400 24px/32px 'Noto Sans SC', sans-serif);
  color: var(--md-sys-color-on-surface);
}

.custom-modal-body {
  padding: var(--spacing-sm) var(--spacing-lg);
  overflow-y: auto;
  flex: 1;
}

.custom-modal-body md-outlined-text-field {
  width: 100%;
  pointer-events: auto;
}

.custom-modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
}

/* ===== 全局对话框居中 ===== */
md-dialog {
  position: fixed !important;
  top: 50% !important;
  left: 50% !important;
  transform: translate(-50%, -50%) !important;
  z-index: 500 !important;
  width: 90% !important;
  max-width: 560px !important;
  max-height: 80vh !important;
  overflow: auto !important;
}

/* ===== 移动端侧边栏 ===== */
@media (max-width: 904px) {
  #sidebar {
    transform: translateX(-100%);
    position: fixed !important;
    z-index: 200 !important;
    transition: transform 0.3s ease !important;
    display: block !important;
    width: 280px !important;
    visibility: visible !important;
  }
  
  #sidebar.open {
    transform: translateX(0) !important;
    display: block !important;
  }
  
  /* 遮罩层 */
  #sidebar.open::before {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0);
    z-index: -1;
  }
}

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

.stat-card {
  background-color: var(--md-sys-color-primary-container);
  border-radius: var(--md-sys-shape-corner-large);
  padding: var(--spacing-lg);
  text-align: center;
}

.stat-card .stat-value {
  font: var(--md-sys-typescale-display-large);
  color: var(--md-sys-color-on-primary-container);
}

.stat-card .stat-label {
  font: var(--md-sys-typescale-label-large);
  color: var(--md-sys-color-on-primary-container);
  opacity: 0.8;
}

/* ===== Select/Filter Bar ===== */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.filter-bar md-outlined-select,
.filter-bar md-outlined-text-field {
  min-width: 150px;
}

/* ===== Markdown 预览 ===== */
.work-content-preview {
  background-color: var(--md-sys-color-surface-container);
  border-radius: var(--md-sys-shape-corner-medium);
  padding: var(--spacing-lg);
  margin-top: var(--spacing-md);
  min-height: 200px;
  white-space: pre-wrap;
  font: var(--md-sys-typescale-body-large);
}