@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.6/dist/web/variable/pretendardvariable.css");

:root {
  /* Colors - Light Theme */
  --bg-primary: #ffffff;
  --bg-sidebar: #f8fafc;
  --bg-hover: #f1f5f9;
  --bg-card: #ffffff;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-placeholder: #94a3b8;
  --border-color: #e2e8f0;
  
  --color-main: #0f172a;
  --color-accent: #3b82f6;
  --color-accent-hover: #2563eb;
  
  --sidebar-width: 280px;
  --header-height: 60px;
}

[data-theme="dark"] {
  /* Colors - Dark Theme */
  --bg-primary: #0f172a;
  --bg-sidebar: #1e293b;
  --bg-hover: #334155;
  --bg-card: #1e293b;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-placeholder: #475569;
  --border-color: #334155;
}

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

body {
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, system-ui, Roboto, "Helvetica Neue", "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", sans-serif;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: 1.6;
  font-size: 16px;
  display: flex;
  min-height: 100vh;
  transition: background-color 0.3s, color 0.3s;
}

/* Sidebar structure */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  height: 100vh;
  position: fixed;
  left: 0;
  top: 0;
  overflow-y: auto;
  transition: transform 0.3s ease;
  z-index: 50;
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  background-color: var(--bg-sidebar);
  z-index: 10;
}

.sidebar-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  display: block;
  text-decoration: none;
}

.search-box {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 0.375rem;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.875rem;
}

.search-box:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.sidebar-nav {
  padding: 1rem 0;
  flex: 1;
}

.nav-group {
  margin-bottom: 1.5rem;
}

.nav-group-title {
  padding: 0 1.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

.nav-menu {
  list-style: none;
}

.nav-item a {
  display: block;
  padding: 0.5rem 1.5rem;
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: background-color 0.2s, color 0.2s;
}

.nav-item a:hover {
  background-color: var(--bg-hover);
  color: var(--color-accent);
}

.nav-item.active > a {
  background-color: rgba(59, 130, 246, 0.1);
  color: var(--color-accent);
  font-weight: 600;
  border-left: 3px solid var(--color-accent);
}

.nav-item ul {
  list-style: none;
  padding-left: 0;
  display: none;
}
.nav-item.open ul {
  display: block;
}
.nav-item ul a {
  padding-left: 2.5rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}
.nav-item ul .active a {
  color: var(--color-accent);
  font-weight: 600;
}

.sidebar-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Main Content structure */
.main-wrapper {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.topbar {
  height: var(--header-height);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  background-color: var(--bg-primary);
  position: sticky;
  top: 0;
  z-index: 40;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-primary);
  padding: 0.5rem;
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 0.375rem;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s;
}

.theme-toggle:hover {
  background-color: var(--bg-hover);
}

.content {
  flex: 1;
  padding: 2rem 4rem 4rem 4rem;
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
}

/* Typography styles inside content */
.content h1 {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  line-height: 1.2;
}

.content h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-top: 3rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.content h3 {
  font-size: 1.375rem;
  font-weight: 700;
  margin-top: 2rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.content h4 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.content p {
  margin-bottom: 1.25rem;
  color: var(--text-primary);
}

.content ul, .content ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

.content li {
  margin-bottom: 0.5rem;
}

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

.content a:hover {
  text-decoration: underline;
}

.content code {
  background-color: var(--bg-hover);
  padding: 0.125rem 0.375rem;
  border-radius: 0.25rem;
  font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.875rem;
  color: var(--color-accent);
}

.content pre {
  background-color: var(--bg-sidebar);
  padding: 1rem;
  border-radius: 0.5rem;
  border: 1px solid var(--border-color);
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

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

.content blockquote {
  border-left: 4px solid var(--color-accent);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  background-color: var(--bg-hover);
  border-radius: 0 0.5rem 0.5rem 0;
}

.content blockquote p:last-child {
  margin-bottom: 0;
}

/* Tables */
.content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
  font-size: 0.9375rem;
}

.content th, .content td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.content th {
  background-color: var(--bg-sidebar);
  font-weight: 600;
  color: var(--text-primary);
}

.content tr:nth-child(even) {
  background-color: var(--bg-sidebar);
}

/* Images & Placeholders */
.content img {
  max-width: 100%;
  height: auto;
  border-radius: 0.5rem;
  border: 1px solid var(--border-color);
  margin: 1.5rem 0;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  display: block;
}

.screenshot-placeholder {
  width: 100%;
  margin: 1.5rem 0;
  border-radius: 0.5rem;
  overflow: hidden;
}

.screenshot-placeholder img {
  width: 100%;
  height: auto;
  margin: 0;
  padding: 0;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  display: block;
}

/* Cards (for the intro dashboard features) */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.feature-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 1.5rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  border-color: var(--color-accent);
}

.feature-icon {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.feature-title {
  font-weight: 700;
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  
  .sidebar.show {
    transform: translateX(0);
    box-shadow: 4px 0 15px rgba(0, 0, 0, 0.1);
  }
  
  .main-wrapper {
    margin-left: 0;
  }
  
  .mobile-toggle {
    display: block;
  }
  
  .content {
    padding: 1.5rem;
  }
  
  /* Overlay */
  .sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 45;
  }
  
  .sidebar-overlay.show {
    display: block;
  }
}

/* Print Styles */
@media print {
  .sidebar, .topbar {
    display: none !important;
  }
  
  .main-wrapper {
    margin-left: 0 !important;
  }
  
  .content {
    padding: 0 !important;
    max-width: none !important;
  }
  
  body {
    background-color: white !important;
    color: black !important;
  }
  
  .screenshot-placeholder {
    border-color: #ccc;
    background-color: #f9f9f9;
    color: #333;
    break-inside: avoid;
  }
  
  h1, h2, h3 {
    break-after: avoid;
  }
}