/* ============================================
   FiuuMi's Blog — 样式表
   设计：现代极简 · 暗色模式 · 流畅动画
   ============================================ */

/* ----- CSS 变量：浅色模式（默认） ----- */
:root {
  --color-bg:            #fdfcfa;
  --color-surface:       #ffffff;
  --color-border:        #e8e5e0;
  --color-text:          #2c2c2c;
  --color-text-secondary:#6b6b6b;
  --color-text-muted:    #999999;
  --color-accent:        #4f46e5;
  --color-accent-hover:  #4338ca;
  --color-accent-soft:   rgba(79, 70, 229, 0.08);
  --color-code-bg:       #f4f3ef;
  --color-code-text:     #383838;
  --color-blockquote-bg: #f8f7f4;
  --color-blockquote-border: #4f46e5;
  --color-card-shadow:   0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
  --color-card-hover:    0 4px 16px rgba(0,0,0,0.08);
  --color-tag-bg:        #f0eeea;
  --color-tag-text:      #5e5e5e;
  --color-progress:      #4f46e5;
  --color-toc-border:    #e8e5e0;
  --transition-fast:     150ms ease;
  --transition-normal:   250ms ease;
  --radius-sm:           6px;
  --radius-md:           10px;
  --radius-lg:           14px;
  --font-serif:          "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --font-mono:           "JetBrains Mono", "Fira Code", "SF Mono", Consolas, monospace;
}

/* ----- CSS 变量：暗色模式 ----- */
[data-theme="dark"] {
  --color-bg:            #18181b;
  --color-surface:       #242428;
  --color-border:        #333338;
  --color-text:          #e4e4e7;
  --color-text-secondary:#a1a1aa;
  --color-text-muted:    #71717a;
  --color-accent:        #818cf8;
  --color-accent-hover:  #a5b4fc;
  --color-accent-soft:   rgba(129, 140, 248, 0.12);
  --color-code-bg:       #2a2a2e;
  --color-code-text:     #e4e4e7;
  --color-blockquote-bg: #242428;
  --color-blockquote-border: #818cf8;
  --color-card-shadow:   0 1px 3px rgba(0,0,0,0.2);
  --color-card-hover:    0 4px 20px rgba(0,0,0,0.35);
  --color-tag-bg:        #333338;
  --color-tag-text:      #a1a1aa;
  --color-toc-border:    #333338;
}

/* ----- 基础重置 ----- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  background: var(--color-bg);
  transition: background var(--transition-normal), color var(--transition-normal);
}

/* ----- 排版 ----- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-text);
}

h1 { font-size: 2rem; letter-spacing: -0.02em; }
h2 { font-size: 1.5rem; letter-spacing: -0.01em; }
h3 { font-size: 1.2rem; }

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

img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
}

/* ----- 容器 ----- */
.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================
   页眉
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid transparent;
  padding: 14px 0;
  transition: background var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.site-header.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: 0 1px 8px rgba(0,0,0,0.04);
}

[data-theme="dark"] .site-header.scrolled {
  box-shadow: 0 1px 8px rgba(0,0,0,0.3);
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.01em;
  transition: color var(--transition-fast);
}
.site-title:hover {
  color: var(--color-accent);
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.site-header nav a {
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: 0.92rem;
  font-weight: 500;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.site-header nav a:hover {
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

/* 暗色模式切换按钮 */
.theme-toggle {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  cursor: pointer;
  font-size: 1rem;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  line-height: 1;
  margin-left: 4px;
}
.theme-toggle:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ============================================
   主体
   ============================================ */
main {
  min-height: calc(100vh - 180px);
  padding: 48px 0 64px;
}

/* ============================================
   首页 — 文章卡片
   ============================================ */
.page-title {
  font-size: 1.7rem;
  margin-bottom: 36px;
}

.post-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.post-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 30px;
  box-shadow: var(--color-card-shadow);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.post-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--color-card-hover);
  border-color: var(--color-accent);
}

.post-card h2 {
  font-size: 1.25rem;
  margin-bottom: 6px;
  line-height: 1.4;
}
.post-card h2 a {
  color: var(--color-text);
}
.post-card h2 a:hover {
  color: var(--color-accent);
}

.post-card .post-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.post-card time {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.post-card .post-excerpt {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-top: 8px;
}

.post-card .tags {
  margin-top: 12px;
}

/* 标签 */
.tag {
  display: inline-block;
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
  padding: 2px 12px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 500;
  margin-right: 6px;
  margin-bottom: 4px;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.tag:hover {
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

/* ============================================
   文章页
   ============================================ */
.post {
  max-width: 760px;
  margin: 0 auto;
}

.post-header {
  margin-bottom: 36px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}

.post-header h1 {
  font-size: 2.2rem;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.post-header time {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.post-header .tags {
  margin-top: 14px;
}

/* 文章内容排版 */
.post-content {
  font-size: 1.05rem;
  line-height: 1.85;
}

.post-content h2 {
  margin: 48px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.post-content h3 {
  margin: 36px 0 12px;
}

.post-content p {
  margin-bottom: 20px;
}

.post-content ul, .post-content ol {
  margin: 8px 0 20px 28px;
}

.post-content li {
  margin-bottom: 6px;
}

.post-content blockquote {
  border-left: 3px solid var(--color-blockquote-border);
  background: var(--color-blockquote-bg);
  padding: 14px 20px;
  margin: 24px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--color-text-secondary);
  font-style: italic;
}
.post-content blockquote p:last-child {
  margin-bottom: 0;
}

/* 代码块 */
.post-content pre {
  background: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  overflow-x: auto;
  margin: 24px 0;
  font-size: 0.88rem;
  line-height: 1.65;
}

.post-content code {
  font-family: var(--font-mono);
  font-size: 0.88em;
}

.post-content :not(pre) > code {
  background: var(--color-code-bg);
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid var(--color-border);
  font-size: 0.88em;
}

.post-content a {
  text-decoration: underline;
  text-decoration-color: var(--color-border);
  text-underline-offset: 3px;
  transition: text-decoration-color var(--transition-fast);
}
.post-content a:hover {
  text-decoration-color: var(--color-accent);
}

.post-content img {
  border-radius: var(--radius-md);
  margin: 20px 0;
}

.post-content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 40px 0;
}

/* 文章表格 */
.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.95rem;
}
.post-content th, .post-content td {
  border: 1px solid var(--color-border);
  padding: 10px 14px;
  text-align: left;
}
.post-content th {
  background: var(--color-code-bg);
  font-weight: 600;
}

/* ============================================
   文章目录 (TOC)
   ============================================ */
.toc {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 32px;
  font-size: 0.9rem;
}

.toc-title {
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-text);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.toc ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.toc ul li {
  margin-bottom: 4px;
}

.toc ul li a {
  display: block;
  padding: 5px 10px;
  border-radius: 4px;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
  border-left: 2px solid transparent;
}

.toc ul li a:hover,
.toc ul li a.active {
  background: var(--color-accent-soft);
  color: var(--color-accent);
  border-left-color: var(--color-accent);
}

.toc ul li.toc-h3 {
  padding-left: 20px;
}

/* ============================================
   阅读进度条
   ============================================ */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), #a78bfa);
  z-index: 200;
  transition: width 100ms linear;
  border-radius: 0 2px 2px 0;
}

/* ============================================
   返回顶部按钮
   ============================================ */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--color-card-shadow);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--color-text-secondary);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition-normal);
  z-index: 150;
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  box-shadow: var(--color-card-hover);
}

/* ============================================
   页脚
   ============================================ */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 28px 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.site-footer a {
  color: var(--color-text-secondary);
  font-weight: 500;
}
.site-footer a:hover {
  color: var(--color-accent);
}

/* ============================================
   关于页
   ============================================ */
.about-page h1 {
  margin-bottom: 28px;
}
.about-page p {
  margin-bottom: 18px;
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  line-height: 1.85;
}

/* ============================================
   Prism.js 暗色适配
   ============================================ */
[data-theme="dark"] pre[class*="language-"] {
  background: #1e1e24 !important;
}
[data-theme="dark"] code[class*="language-"] {
  color: #e4e4e7 !important;
}

/* ============================================
   响应式
   ============================================ */
@media (max-width: 768px) {
  .container {
    padding: 0 18px;
  }

  .post-header h1 {
    font-size: 1.6rem;
  }

  .post-content {
    font-size: 1rem;
  }

  .post-card {
    padding: 20px 22px;
  }

  .post-card h2 {
    font-size: 1.1rem;
  }

  .site-title {
    font-size: 1.1rem;
  }

  .site-header nav a {
    padding: 6px 10px;
    font-size: 0.85rem;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
  }

  .post-content pre {
    padding: 14px 16px;
    font-size: 0.82rem;
  }
}

@media (max-width: 480px) {
  .post-header h1 {
    font-size: 1.4rem;
  }

  .post-card {
    padding: 16px 18px;
  }

  .site-header nav {
    gap: 2px;
  }

  .toc {
    padding: 14px 16px;
  }
}

/* ============================================
   空态 / 无文章
   ============================================ */
.empty-state {
  text-align: center;
  padding: 80px 20px;
  color: var(--color-text-muted);
}
.empty-state p {
  font-size: 1.1rem;
}

/* ============================================
   编辑器页面
   ============================================ */
.editor-page {
  max-width: 860px;
  margin: 0 auto;
}

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

.editor-section details {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0;
}

.editor-section details summary {
  padding: 14px 20px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  user-select: none;
}

.editor-section .settings-body {
  padding: 0 20px 20px;
}

.settings-hint {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  line-height: 1.7;
}

.settings-hint a {
  font-weight: 600;
}

/* 输入行 */
.input-row {
  display: flex;
  gap: 16px;
  align-items: flex-end;
  flex-wrap: wrap;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
  margin-bottom: 14px;
}

.input-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.input-group input,
.input-group textarea {
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-group input:focus,
.input-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-soft);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.btn-primary:hover {
  background: var(--color-accent-hover);
}
.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

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

.btn-ghost {
  background: none;
  color: var(--color-text-muted);
  border: 1px solid transparent;
}
.btn-ghost:hover {
  color: #e53e3e;
  border-color: rgba(229, 62, 62, 0.3);
}

/* Token 状态 */
.token-status {
  margin-top: 10px;
  font-size: 0.85rem;
}

/* 编辑器主体 */
.editor-main .EasyMDEContainer {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.editor-main .editor-toolbar {
  border: none;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-code-bg);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.editor-main .editor-toolbar button {
  color: var(--color-text-secondary) !important;
}
.editor-main .editor-toolbar button:hover,
.editor-main .editor-toolbar button.active {
  background: var(--color-accent-soft);
  color: var(--color-accent) !important;
  border-color: var(--color-accent) !important;
}

.editor-main .CodeMirror {
  background: var(--color-surface);
  color: var(--color-text);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  font-family: var(--font-mono);
  font-size: 0.92rem;
  line-height: 1.7;
  min-height: 420px;
}

.editor-main .CodeMirror-cursor {
  border-left-color: var(--color-accent);
}

.editor-main .CodeMirror-selected {
  background: var(--color-accent-soft) !important;
}

.editor-main .editor-preview {
  background: var(--color-surface);
  padding: 24px;
}

.editor-main .editor-statusbar {
  border-top: 1px solid var(--color-border);
  background: var(--color-code-bg);
  color: var(--color-text-muted);
  font-size: 0.8rem;
  padding: 6px 14px;
}

/* 暗色模式下编辑器适配 */
[data-theme="dark"] .editor-main .editor-toolbar {
  background: #2a2a2e;
}
[data-theme="dark"] .editor-main .CodeMirror {
  background: #1e1e24;
  color: #e4e4e7;
}
[data-theme="dark"] .editor-main .CodeMirror-gutters {
  background: #1e1e24;
  border-right-color: #333338;
}
[data-theme="dark"] .editor-main .editor-toolbar i.separator {
  border-left-color: #444;
  border-right-color: #333;
}

/* 发布按钮区 */
.editor-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.editor-actions .btn-primary {
  padding: 12px 28px;
  font-size: 1rem;
}

/* 状态提示 */
.publish-status {
  font-size: 0.9rem;
}

.publish-status.success {
  color: #16a34a;
}
.publish-status.error {
  color: #dc2626;
}
.publish-status.warning {
  color: #d97706;
}
.publish-status.info {
  color: var(--color-text-muted);
}

.publish-status a {
  font-weight: 600;
}

[data-theme="dark"] .publish-status.success {
  color: #4ade80;
}
[data-theme="dark"] .publish-status.error {
  color: #f87171;
}
[data-theme="dark"] .publish-status.warning {
  color: #fbbf24;
}

/* ============================================
   管理页面
   ============================================ */
.manage-page {
  max-width: 900px;
  margin: 0 auto;
}

.manage-filters {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 24px;
}

.manage-filters .input-group {
  margin-bottom: 0;
}

.manage-filters select {
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-family: inherit;
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
}

.manage-filters select:focus {
  outline: none;
  border-color: var(--color-accent);
}

.filter-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 14px;
}

.manage-count {
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.manage-loading {
  text-align: center;
  padding: 60px 20px;
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

.manage-error {
  text-align: center;
  padding: 40px 20px;
  color: #dc2626;
  background: rgba(220, 38, 38, 0.06);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
}

[data-theme="dark"] .manage-error {
  background: rgba(248, 113, 113, 0.1);
}

.manage-list {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.manage-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.manage-table th {
  text-align: left;
  padding: 14px 18px;
  background: var(--color-code-bg);
  color: var(--color-text-secondary);
  font-weight: 600;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--color-border);
}

.manage-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}

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

.manage-table tr:hover td {
  background: var(--color-accent-soft);
}

.manage-table .col-date {
  white-space: nowrap;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.manage-table .col-actions {
  white-space: nowrap;
  text-align: right;
}

.manage-table .post-link {
  color: var(--color-text);
  font-weight: 600;
}
.manage-table .post-link:hover {
  color: var(--color-accent);
}

.manage-table .tag-sm {
  font-size: 0.72rem;
  padding: 1px 8px;
}

.manage-empty {
  text-align: center;
  padding: 50px 20px;
  color: var(--color-text-muted);
}

/* 按钮尺寸 */
.btn-sm {
  padding: 5px 12px;
  font-size: 0.8rem;
}

.btn-danger {
  background: #dc2626;
  color: #fff;
  border-color: #dc2626;
}
.btn-danger:hover {
  background: #b91c1c;
}

.btn-danger-outline {
  background: none;
  color: #dc2626;
  border: 1px solid rgba(220,38,38,0.3);
}
.btn-danger-outline:hover {
  background: rgba(220,38,38,0.08);
  border-color: #dc2626;
}

/* 模态框 */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 300;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 30px;
  max-width: 440px;
  width: 100%;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}

.modal h3 {
  margin-bottom: 14px;
}

.modal p {
  color: var(--color-text-secondary);
  margin-bottom: 20px;
  line-height: 1.7;
}

.modal-actions {
  display: flex;
  gap: 10px;
}

.modal .input-group {
  margin-bottom: 16px;
}

/* ============================================
   打印样式
   ============================================ */
@media print {
  .site-header,
  .site-footer,
  .back-to-top,
  .reading-progress,
  .theme-toggle,
  .toc {
    display: none !important;
  }
  body {
    background: #fff;
    color: #000;
  }
}