:root {
  --sidebar-width: 280px;
  --sidebar-bg: #f5f5f5;
  --text-color: #333;
  --hover-color: #e0e0e0;
  --active-color: #007bff;
  --folder-color: #999;
  --header-height: 64px;
}

body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, sans-serif;
}

.container {
  display: flex;
  min-height: 100vh;
  flex-wrap: wrap;
}

/* Header styles */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: white;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  display: flex;
  align-items: center;
  padding: 0 20px;
  width: 100%;
  box-sizing: border-box;
}

.site-title {
  margin: 0;
  font-size: 1.2em;
  font-weight: 500;
  color: var(--text-color);
}

.sidebar {
  width: var(--sidebar-width);
  background-color: var(--sidebar-bg);
  border-right: 1px solid #ddd;
  position: fixed;
  height: calc(100vh - var(--header-height));
  top: var(--header-height);
  overflow-y: auto;
  z-index: 900;
}

.sidebar-content {
  padding: 20px;
}

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

.nav-list .nav-list {
  margin-left: 20px;
}

.nav-item {
  margin: 4px 0;
}

.nav-link {
  display: block;
  padding: 8px 12px;
  color: var(--text-color);
  text-decoration: none;
  border-radius: 4px;
  transition: background-color 0.2s;
}

.nav-link:hover {
  background-color: var(--hover-color);
}

.nav-link.active {
  color: var(--active-color);
  font-weight: 500;
}

.nav-folder {
  display: block;
  padding: 8px 12px;
  color: var(--folder-color);
  font-weight: 500;
  cursor: default;
}

.main-content {
  margin-left: var(--sidebar-width);
  margin-top: calc(var(--header-height) / 2);
  padding: 40px;
  flex: 1;
  max-width: 800px;
}

.markdown-content {
  line-height: 1.6;
}

.markdown-content h1,
.markdown-content h2,
.markdown-content h3,
.markdown-content h4 {
  /* margin-top: 1.5em; */
  margin-bottom: 0.5em;
}

.markdown-content p {
  margin: 1em 0;
}

.markdown-content code {
  background: #f0f0f0;
  padding: 2px 4px;
  border-radius: 3px;
}

.markdown-content pre {
  background: #f5f5f5;
  border-radius: 4px;
  overflow-x: auto;
}

/* Table styles */
.markdown-content table {
  border-collapse: collapse;
  width: 100%;
  margin: 1em 0;
  font-size: 0.95em;
}

.markdown-content th,
.markdown-content td {
  border: 1px solid #ddd;
  padding: 8px 12px;
  text-align: left;
}

.markdown-content th {
  background-color: #f5f5f5;
  font-weight: 600;
}

.markdown-content tr:nth-child(even) {
  background-color: #f9f9f9;
}

.markdown-content tr:hover {
  background-color: #f0f0f0;
}

/* Mermaid diagram styles */
.mermaid {
  margin: 1em 0;
  text-align: center;
}

.markdown-content li:has(input[type="checkbox"]) {
  list-style: none;
  margin: 0.5em 0;
}

.markdown-content img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1em auto;
}

/* Burger menu styles */
.burger-menu {
  display: none;
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 24px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.burger-menu span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--text-color);
  margin: 5px 0;
  transition: 0.4s;
}

.burger-menu.active span:nth-child(1) {
  transform: rotate(-45deg) translate(-5px, 6px);
}

.burger-menu.active span:nth-child(2) {
  opacity: 0;
}

.burger-menu.active span:nth-child(3) {
  transform: rotate(45deg) translate(-5px, -6px);
}

/* Responsive styles */
@media screen and (max-width: 768px) {
  .header {
    padding: 0 20px;
  }

  .burger-menu {
    display: block;
  }

  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    background-color: white;
    box-shadow: 2px 0 4px rgba(0, 0, 0, 0.1);
  }

  .sidebar.active {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
    padding: 20px;
  }

  .container.sidebar-open .main-content {
    opacity: 0.7;
    pointer-events: none;
  }

  .markdown-content {
    font-size: 16px;
  }
}