/* 全局样式重置 */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* HTML 和 Body 基础样式 */
html {
  line-height: 1.15;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu',
    'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: #ffffff;
  color: #2d3748;
  line-height: 1.6;
}

/* 标题样式 */
h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-weight: 600;
  line-height: 1.2;
  color: #1a202c;
}

h1 {
  font-size: 2.25rem;
}

h2 {
  font-size: 1.875rem;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

h5 {
  font-size: 1.125rem;
}

h6 {
  font-size: 1rem;
}

/* 段落样式 */
p {
  margin: 0 0 1rem 0;
  line-height: 1.6;
}

/* 链接样式 */
a {
  color: #4299e1;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #3182ce;
  text-decoration: underline;
}

a:focus {
  outline: 2px solid #4299e1;
  outline-offset: 2px;
}

/* 按钮基础样式 */
button {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  margin: 0;
  overflow: visible;
  text-transform: none;
  -webkit-appearance: button;
  cursor: pointer;
}

button:focus {
  outline: 2px solid #4299e1;
  outline-offset: 2px;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* 表单元素样式 */
input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  margin: 0;
  padding: 0.5rem;
  border: 1px solid #cbd5e0;
  border-radius: 0.375rem;
  background-color: #ffffff;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: #4299e1;
  box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.1);
}

input::placeholder,
textarea::placeholder {
  color: #a0aec0;
}

/* 列表样式 */
ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

ul[role='list'],
ol[role='list'] {
  list-style: none;
}

/* 图片样式 */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* 代码样式 */
code {
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.875em;
  background-color: #f7fafc;
  padding: 0.125rem 0.25rem;
  border-radius: 0.25rem;
  color: #e53e3e;
}

pre {
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  background-color: #f7fafc;
  padding: 1rem;
  border-radius: 0.5rem;
  overflow-x: auto;
  line-height: 1.4;
}

pre code {
  background-color: transparent;
  padding: 0;
  color: inherit;
}

/* 表格样式 */
table {
  border-collapse: collapse;
  width: 100%;
}

th,
td {
  text-align: left;
  padding: 0.75rem;
  border-bottom: 1px solid #e2e8f0;
}

th {
  font-weight: 600;
  background-color: #f7fafc;
}

/* 分割线样式 */
hr {
  border: none;
  height: 1px;
  background-color: #e2e8f0;
  margin: 2rem 0;
}

/* 引用样式 */
blockquote {
  margin: 1rem 0;
  padding: 1rem;
  border-left: 4px solid #4299e1;
  background-color: #f7fafc;
  font-style: italic;
}

/* 工具类 */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.font-bold {
  font-weight: 700;
}

.font-semibold {
  font-weight: 600;
}

.font-medium {
  font-weight: 500;
}

.text-sm {
  font-size: 0.875rem;
}

.text-lg {
  font-size: 1.125rem;
}

.text-xl {
  font-size: 1.25rem;
}

.text-2xl {
  font-size: 1.5rem;
}

.text-3xl {
  font-size: 1.875rem;
}

.mb-1 {
  margin-bottom: 0.25rem;
}

.mb-2 {
  margin-bottom: 0.5rem;
}

.mb-4 {
  margin-bottom: 1rem;
}

.mb-8 {
  margin-bottom: 2rem;
}

.mt-1 {
  margin-top: 0.25rem;
}

.mt-2 {
  margin-top: 0.5rem;
}

.mt-4 {
  margin-top: 1rem;
}

.mt-8 {
  margin-top: 2rem;
}

.p-1 {
  padding: 0.25rem;
}

.p-2 {
  padding: 0.5rem;
}

.p-4 {
  padding: 1rem;
}

.p-8 {
  padding: 2rem;
}

.rounded {
  border-radius: 0.375rem;
}

.rounded-lg {
  border-radius: 0.5rem;
}

.shadow {
  box-shadow:
    0 1px 3px 0 rgba(0, 0, 0, 0.1),
    0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

.shadow-lg {
  box-shadow:
    0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* 响应式工具类 */
@media (max-width: 640px) {
  .sm\:text-sm {
    font-size: 0.875rem;
  }

  .sm\:p-2 {
    padding: 0.5rem;
  }
}

@media (max-width: 768px) {
  .md\:text-base {
    font-size: 1rem;
  }

  .md\:p-4 {
    padding: 1rem;
  }
}

@media (max-width: 1024px) {
  .lg\:text-lg {
    font-size: 1.125rem;
  }

  .lg\:p-6 {
    padding: 1.5rem;
  }
}

/* 动画类 */
.fade-enter-active,
.fade-leave-active {
  transition: opacity 0.3s ease;
}

.fade-enter-from,
.fade-leave-to {
  opacity: 0;
}

.slide-enter-active,
.slide-leave-active {
  transition: transform 0.3s ease;
}

.slide-enter-from {
  transform: translateX(-100%);
}

.slide-leave-to {
  transform: translateX(100%);
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #1a202c;
    --text-color: #e2e8f0;
    --border-color: #4a5568;
  }

  body {
    background-color: var(--bg-color);
    color: var(--text-color);
  }

  input,
  textarea,
  select {
    background-color: #2d3748;
    border-color: var(--border-color);
    color: var(--text-color);
  }
}

/* 打印样式 */
@media print {
  *,
  *::before,
  *::after {
    background: transparent !important;
    color: #000 !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  a,
  a:visited {
    text-decoration: underline;
  }

  a[href]::after {
    content: ' (' attr(href) ')';
  }

  abbr[title]::after {
    content: ' (' attr(title) ')';
  }

  pre {
    white-space: pre-wrap !important;
  }

  pre,
  blockquote {
    border: 1px solid #999;
    page-break-inside: avoid;
  }

  thead {
    display: table-header-group;
  }

  tr,
  img {
    page-break-inside: avoid;
  }

  p,
  h2,
  h3 {
    orphans: 3;
    widows: 3;
  }

  h2,
  h3 {
    page-break-after: avoid;
  }
}