/* ============================================
   Co-Talk Documentation - Clean Document Style
   GitBook/Notion 스타일 미니멀 디자인
   ============================================ */

/* CSS 변수 */
:root {
  --sidebar-width: 260px;
  --header-height: 56px;
  
  /* 색상 */
  --text-primary: #1a1a1a;
  --text-secondary: #4a4a4a;
  --text-muted: #717171;
  --bg-primary: #ffffff;
  --bg-secondary: #fafafa;
  --bg-sidebar: #f7f7f7;
  --border-color: #e5e5e5;
  --accent: #0066cc;
  --accent-hover: #0052a3;
  --accent-bg: #f0f7ff;
}

/* 다크 모드 */
@media (prefers-color-scheme: dark) {
  :root {
    --text-primary: #e8e8e8;
    --text-secondary: #b0b0b0;
    --text-muted: #808080;
    --bg-primary: #1a1a1a;
    --bg-secondary: #222222;
    --bg-sidebar: #161616;
    --border-color: #333333;
    --accent: #4da3ff;
    --accent-hover: #7ab8ff;
    --accent-bg: #1a2c3d;
  }
}

/* 기본 리셋 */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-primary);
  margin: 0;
  padding: 0;
}

/* ============================================
   사이드바
   ============================================ */

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
}

.sidebar-header {
  padding: 20px 16px;
  border-bottom: 1px solid var(--border-color);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 16px;
}

.logo-icon {
  font-size: 20px;
}

.logo-text {
  letter-spacing: -0.3px;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 0;
  overflow-y: auto;
}

.nav-section {
  margin-bottom: 20px;
}

.nav-section-title {
  padding: 8px 16px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}

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

.nav-list li {
  margin: 0;
  padding: 0;
}

.nav-link {
  display: block;
  padding: 8px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: background 0.15s, color 0.15s;
  border-left: 3px solid transparent;
}

.nav-link:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.nav-link.active {
  background: var(--accent-bg);
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 500;
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border-color);
}

.github-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  transition: color 0.15s;
}

.github-link:hover {
  color: var(--text-primary);
}

/* ============================================
   모바일 헤더
   ============================================ */

.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  padding: 0 16px;
  align-items: center;
  z-index: 99;
}

.menu-toggle {
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: 4px;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  transition: transform 0.2s;
}

.mobile-logo {
  margin-left: 12px;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 99;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.sidebar-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

/* ============================================
   메인 콘텐츠
   ============================================ */

.main-content {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  background: var(--bg-primary);
}

.content {
  max-width: 800px;
  margin: 0 auto;
  padding: 48px 40px 80px;
}

/* ============================================
   타이포그래피
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 600;
  line-height: 1.4;
  margin-top: 2em;
  margin-bottom: 0.8em;
}

h1 {
  font-size: 2em;
  font-weight: 700;
  margin-top: 0;
  padding-bottom: 0.5em;
  border-bottom: 1px solid var(--border-color);
}

h2 {
  font-size: 1.5em;
  margin-top: 2.5em;
  padding-bottom: 0.3em;
  border-bottom: 1px solid var(--border-color);
}

h3 {
  font-size: 1.25em;
}

h4 {
  font-size: 1.1em;
}

p {
  margin: 1em 0;
  color: var(--text-secondary);
}

strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* ============================================
   링크
   ============================================ */

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

a:hover {
  text-decoration: underline;
}

/* ============================================
   목록
   ============================================ */

ul, ol {
  padding-left: 1.5em;
  margin: 1em 0;
}

li {
  margin: 0.4em 0;
  color: var(--text-secondary);
}

li::marker {
  color: var(--text-muted);
}

/* ============================================
   코드
   ============================================ */

code {
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.875em;
  background: var(--bg-secondary);
  padding: 0.2em 0.4em;
  border-radius: 4px;
  color: var(--text-primary);
}

pre {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 16px;
  overflow-x: auto;
  margin: 1.5em 0;
}

pre code {
  background: none;
  padding: 0;
  font-size: 13px;
  line-height: 1.6;
  display: block;
  white-space: pre;
}

/* Rouge 코드 하이라이터 */
.highlight {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin: 1.5em 0;
  overflow-x: auto;
}

.highlight pre {
  margin: 0;
  padding: 16px;
  border: none;
  background: transparent;
  font-size: 13px;
  line-height: 1.5;
}

/* 인라인 라인 넘버 스타일 */
.highlight .lineno {
  display: inline-block;
  width: 32px;
  margin-right: 16px;
  padding-right: 12px;
  text-align: right;
  color: var(--text-muted);
  border-right: 1px solid var(--border-color);
  user-select: none;
}

/* 테이블 방식 라인 넘버 (fallback) */
.highlight table {
  margin: 0;
  border: none;
  border-collapse: collapse;
  width: 100%;
}

.highlight table td {
  padding: 0;
  border: none;
  vertical-align: top;
}

.highlight table tr:hover td {
  background: transparent;
}

.highlight td.gutter,
.highlight td.rouge-gutter {
  width: 50px;
  padding: 16px 0;
  text-align: right;
  background: rgba(0, 0, 0, 0.02);
  border-right: 1px solid var(--border-color);
  user-select: none;
}

.highlight td.gutter pre,
.highlight td.rouge-gutter pre {
  margin: 0;
  padding: 0 12px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-muted);
  background: transparent;
}

.highlight td.code,
.highlight td.rouge-code {
  padding: 16px;
}

.highlight td.code pre,
.highlight td.rouge-code pre {
  margin: 0;
  padding: 0;
  font-size: 13px;
  line-height: 1.5;
}

@media (prefers-color-scheme: dark) {
  .highlight td.gutter,
  .highlight td.rouge-gutter {
    background: rgba(255, 255, 255, 0.02);
  }
}

/* ============================================
   테이블
   ============================================ */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 14px;
}

th, td {
  padding: 12px 16px;
  text-align: left;
  border: 1px solid var(--border-color);
}

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

td {
  color: var(--text-secondary);
}

tr:hover td {
  background: var(--bg-secondary);
}

/* ============================================
   인용문
   ============================================ */

blockquote {
  margin: 1.5em 0;
  padding: 12px 20px;
  border-left: 3px solid var(--accent);
  background: var(--bg-secondary);
  color: var(--text-secondary);
}

blockquote p {
  margin: 0;
}

/* ============================================
   구분선
   ============================================ */

hr {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 2em 0;
}

/* ============================================
   알림 박스
   ============================================ */

.alert {
  padding: 16px 20px;
  border-radius: 8px;
  margin: 1.5em 0;
  border: 1px solid;
}

.alert-info {
  background: #f0f7ff;
  border-color: #b3d4fc;
  color: #0a4a8f;
}

.alert-success {
  background: #f0faf0;
  border-color: #b3e6b3;
  color: #1a5f1a;
}

.alert-warning {
  background: #fffbf0;
  border-color: #fce8b3;
  color: #8a6914;
}

@media (prefers-color-scheme: dark) {
  .alert-info {
    background: #1a2c3d;
    border-color: #2d4a5f;
    color: #7ab8ff;
  }
  
  .alert-success {
    background: #1a2d1a;
    border-color: #2d4a2d;
    color: #7ae67a;
  }
  
  .alert-warning {
    background: #2d2a1a;
    border-color: #4a452d;
    color: #ffd966;
  }
}

/* ============================================
   문서 카드 (간소화)
   ============================================ */

.doc-card {
  padding: 16px 0;
  border-bottom: 1px solid var(--border-color);
}

.doc-card:last-child {
  border-bottom: none;
}

.doc-card h3 {
  margin: 0 0 4px 0;
  font-size: 1em;
  font-weight: 500;
}

.doc-card h3 a {
  color: var(--text-primary);
}

.doc-card h3 a:hover {
  color: var(--accent);
}

.doc-card p {
  margin: 0;
  font-size: 14px;
  color: var(--text-muted);
}

/* ============================================
   배지
   ============================================ */

.badge {
  display: inline-block;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 500;
  background: var(--accent-bg);
  color: var(--accent);
  border-radius: 4px;
  margin-left: 8px;
}

/* ============================================
   Mermaid 다이어그램
   ============================================ */

.mermaid {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 20px;
  margin: 1.5em 0;
  text-align: center;
}

/* ============================================
   KaTeX 수식
   ============================================ */

.katex-display {
  margin: 1.5em 0;
  padding: 16px;
  background: var(--bg-secondary);
  border-radius: 8px;
  overflow-x: auto;
}

/* ============================================
   PlantUML 다이어그램
   ============================================ */

.plantuml-diagram {
  margin: 1.5em 0;
  padding: 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  text-align: center;
  overflow-x: auto;
}

.plantuml-diagram img {
  max-width: 100%;
  height: auto;
}

/* ============================================
   반응형
   ============================================ */

@media (max-width: 900px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.2s ease;
  }
  
  .sidebar.open {
    transform: translateX(0);
  }
  
  .mobile-header {
    display: flex;
  }
  
  .sidebar-overlay {
    display: block;
  }
  
  .main-content {
    margin-left: 0;
    padding-top: var(--header-height);
  }
  
  .content {
    padding: 32px 20px 60px;
  }
}

@media (max-width: 600px) {
  .content {
    padding: 24px 16px 48px;
  }
  
  h1 {
    font-size: 1.6em;
  }
  
  h2 {
    font-size: 1.3em;
  }
  
  table {
    font-size: 13px;
  }
  
  th, td {
    padding: 8px 12px;
  }
}

/* ============================================
   스크롤바
   ============================================ */

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ============================================
   홈페이지 전용 스타일
   ============================================ */

.home-header {
  text-align: center;
  padding: 40px 0 32px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 32px;
}

.home-header h1 {
  border: none;
  padding: 0;
  margin: 0 0 8px 0;
}

.home-header p {
  margin: 0;
  font-size: 16px;
}

.doc-section {
  margin-bottom: 32px;
}

.doc-section h2 {
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  border: none;
  padding: 0;
  margin: 0 0 12px 0;
}

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

.doc-list li {
  margin: 0;
  border-bottom: 1px solid var(--border-color);
}

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

.doc-list a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.15s;
}

.doc-list a:hover {
  color: var(--accent);
}

.doc-list .doc-title {
  font-weight: 500;
}

.doc-list .doc-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-left: auto;
  padding-left: 16px;
}

/* 시작 가이드 박스 */
.getting-started {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 20px 24px;
  margin: 32px 0;
}

.getting-started h3 {
  margin: 0 0 12px 0;
  font-size: 15px;
}

.getting-started ol {
  margin: 0;
  padding-left: 1.2em;
}

.getting-started li {
  margin: 8px 0;
  font-size: 14px;
}