/* Base */
@import url('https://fonts.googleapis.com/css2?family=Nanum+Gothic:wght@400;700;800&display=swap');

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

:root {
  --color-primary: #03C75A;
  --color-primary-dark: #009f47;
  --color-primary-light: #e8f7ef;
  --color-bg: #f5f6f8;
  --color-text: #080808;
  --color-text-secondary: #666666;
  --color-text-tertiary: #999999;
  --color-card: #ffffff;
  --color-border: #e8e8e8;
  --color-code-bg: #f1f3f5;
  --radius-card: 16px;
  --radius-sm: 8px;
  --shadow-card: 0 4px 6px rgba(50, 50, 93, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-card-hover: 0 8px 16px rgba(50, 50, 93, 0.1), 0 3px 6px rgba(0, 0, 0, 0.06);
  --nav-height: 56px;
}

html {
  font-size: 15px;
  scroll-padding-top: calc(var(--nav-height) + 16px);
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: 'Nanum Gothic', -apple-system, BlinkMacSystemFont, 'Malgun Gothic', sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  word-break: keep-all;
  overflow-wrap: break-word;
}

/* Navigation */
.top-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 8px;
  height: var(--nav-height);
  padding: 0 24px;
  background: var(--color-card);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  font-size: 14px;
}

.nav-home {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -0.5px;
}

.nav-home:hover {
  opacity: 0.85;
}

.nav-sep {
  color: var(--color-text-tertiary);
}

.nav-current {
  color: var(--color-text-secondary);
  font-weight: 700;
}

.nav-subtitle {
  color: var(--color-text-tertiary);
  font-weight: 400;
}

/* Page layout */
.page-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 24px;
  max-width: 960px;
  margin: 24px auto;
  padding: 0 24px;
}

.content {
  background: var(--color-card);
  border-radius: var(--radius-card);
  padding: 40px 48px;
  box-shadow: var(--shadow-card);
}

.content-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  position: relative;
}

.content-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 48px;
  height: 3px;
  background-color: var(--color-primary);
  border-radius: 2px;
}

.content-header h1 {
  font-size: 26px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.5px;
  margin-bottom: 0;
  padding-bottom: 0;
}

.content-header h1::after {
  display: none;
}

.edit-link {
  flex-shrink: 0;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-tertiary);
  text-decoration: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 4px 12px;
  transition: all 0.15s ease;
  margin-top: 4px;
}

.edit-link:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  text-decoration: none;
}

.content h2 {
  font-size: 20px;
  font-weight: 700;
  margin-top: 36px;
  margin-bottom: 14px;
  padding-left: 14px;
  border-left: 3px solid var(--color-primary);
  letter-spacing: -0.3px;
}

.content h3 {
  font-size: 17px;
  font-weight: 700;
  margin-top: 28px;
  margin-bottom: 10px;
}

.content h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-secondary);
  margin-top: 24px;
  margin-bottom: 8px;
}

.content p {
  margin-bottom: 16px;
  line-height: 1.8;
}

.content ul,
.content ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

.content li {
  margin-bottom: 8px;
  line-height: 1.5;
}

.content li::marker {
  color: var(--color-primary);
}

.content li p {
  margin-bottom: 0;
}

.content a {
  color: var(--color-primary);
  text-decoration: none;
  transition: all 0.15s ease;
}

.content a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

.content img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  margin: 16px 0;
}

.content strong {
  font-weight: 800;
}

/* Blockquote */
.content blockquote {
  border: none;
  background-color: var(--color-primary-light);
  padding: 20px 24px 20px 48px;
  margin: 20px 0;
  border-radius: 12px;
  position: relative;
}

.content blockquote::before {
  content: '\201C';
  position: absolute;
  left: 18px;
  top: 10px;
  font-size: 32px;
  color: var(--color-primary);
  font-weight: 800;
  line-height: 1;
}

.content blockquote p {
  color: #333333;
  margin-bottom: 0;
  font-size: 14px;
}

/* Code */
.content code {
  font-family: 'D2Coding', 'Consolas', 'Monaco', monospace;
  font-size: 13px;
  background: var(--color-code-bg);
  color: #e44d2a;
  padding: 3px 8px;
  border-radius: 6px;
}

.content pre {
  background: #f8f9fa;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 24px;
  overflow-x: auto;
  margin-bottom: 20px;
}

.content pre code {
  background: none;
  color: var(--color-text);
  padding: 0;
  font-size: 14px;
  line-height: 1.7;
}

/* Tables */
.content table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 20px 0;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  font-size: 14px;
}

.content th {
  background-color: var(--color-primary);
  color: #ffffff;
  font-weight: 700;
  padding: 12px 20px;
  text-align: left;
  letter-spacing: -0.2px;
  border: none;
}

.content td {
  padding: 12px 20px;
  border-bottom: 1px solid #f0f0f0;
  border-left: none;
  border-right: none;
  border-top: none;
}

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

.content tr:hover td {
  background-color: var(--color-primary-light);
}

/* Horizontal rule */
.content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 32px 0;
}

/* Sidebar */
.sidebar {
  position: sticky;
  top: calc(var(--nav-height) + 24px);
  align-self: start;
  font-size: 14px;
}

.sidebar section {
  background: var(--color-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 20px 24px;
  margin-bottom: 16px;
}

.sidebar h2 {
  font-size: 15px;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-primary-light);
  padding-bottom: 8px;
  text-transform: none;
  letter-spacing: -0.2px;
}

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

.sidebar li {
  margin-bottom: 4px;
  padding: 4px 0;
  border-bottom: 1px solid #f5f5f5;
}

.sidebar li:last-child {
  border-bottom: none;
}

.sidebar a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 700;
  transition: all 0.15s ease;
}

.sidebar a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

/* Wikilink styling */
.wikilink {
  color: var(--color-primary);
}

.broken-link {
  color: var(--color-text-tertiary);
  text-decoration: line-through;
}

/* Index page */
.index-layout {
  max-width: 960px;
  margin: 24px auto;
  padding: 0 24px;
}

.graph-section {
  background: var(--color-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 24px;
  margin-bottom: 24px;
}

#graph {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: #fefefe;
}

#graph svg {
  display: block;
}

.page-list-section {
  background: var(--color-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 32px 40px;
}

.page-list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-primary-light);
}

.page-list-header h2 {
  font-size: 16px;
  font-weight: 800;
  color: var(--color-primary);
}

.page-count {
  color: var(--color-text-tertiary);
  font-weight: 700;
  font-size: 13px;
}

#search {
  padding: 0 12px;
  height: 32px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  width: 200px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}

#search:focus {
  border-color: var(--color-primary);
}

.page-list {
  list-style: none;
  column-count: 3;
  column-gap: 24px;
  padding: 0;
}

.page-list li {
  break-inside: avoid;
  margin-bottom: 4px;
  padding: 4px 0;
  border-bottom: 1px solid #f5f5f5;
}

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

.page-list a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  transition: all 0.15s ease;
}

.page-list a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

/* Responsive */
@media (max-width: 768px) {
  .page-layout {
    grid-template-columns: 1fr;
    padding: 0;
    margin: 16px auto;
    gap: 16px;
  }

  .content {
    padding: 24px 20px;
    border-radius: 0;
  }

  .sidebar {
    position: static;
    padding: 0 16px;
  }

  .sidebar section {
    border-radius: var(--radius-sm);
  }

  .top-nav {
    padding: 0 16px;
  }

  .content h1 {
    font-size: 22px;
  }

  .content h2 {
    font-size: 18px;
  }

  .index-layout {
    padding: 0;
    margin: 16px auto;
  }

  .graph-section {
    border-radius: 0;
  }

  .page-list-section {
    padding: 24px 20px;
    border-radius: 0;
  }

  .page-list {
    column-count: 1;
  }

  #search {
    width: 140px;
  }
}

@media (max-width: 1024px) and (min-width: 769px) {
  .page-list {
    column-count: 2;
  }
}