/* ============================================================
   EduFlow - MkDocs Material Custom Theme
   깔끔하고 모던한 교육자료 스타일
   ============================================================ */

/* --- 전체 레이아웃 --- */
:root {
  --ef-primary: #4f46e5;
  --ef-primary-light: #e0e7ff;
  --ef-accent: #7c3aed;
  --ef-bg: #fafafa;
  --ef-card-bg: #ffffff;
  --ef-border: #e5e7eb;
  --ef-text: #1f2937;
  --ef-text-muted: #6b7280;
  --ef-radius: 12px;
}

/* 본문 최대 너비 확장 */
.md-content__inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* --- 타이포그래피 --- */
.md-typeset h1 {
  font-weight: 800;
  color: var(--ef-text);
  margin-top: 0;
  padding-bottom: 0.5rem;
  border-bottom: 3px solid var(--ef-primary);
  display: inline-block;
}

.md-typeset h2 {
  font-weight: 700;
  color: var(--ef-text);
  margin-top: 2.5rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--ef-border);
}

.md-typeset h3 {
  font-weight: 600;
  color: #374151;
  margin-top: 1.8rem;
}

.md-typeset p {
  line-height: 1.85;
  color: #374151;
}

/* 이모지 헤딩 간격 */
.md-typeset h1 .twemoji,
.md-typeset h2 .twemoji,
.md-typeset h3 .twemoji {
  margin-right: 0.3rem;
}

/* --- 네비게이션 --- */
.md-header {
  background: linear-gradient(135deg, #4f46e5, #7c3aed) !important;
  box-shadow: 0 2px 8px rgba(79, 70, 229, 0.2);
}

.md-tabs {
  background: rgba(79, 70, 229, 0.95) !important;
}

/* 사이드바 활성 항목 */
.md-nav__link--active {
  color: var(--ef-primary) !important;
  font-weight: 600;
}

/* --- 코드 블록 --- */
.md-typeset pre {
  border-radius: var(--ef-radius);
  border: 1px solid var(--ef-border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  margin: 1.2rem 0;
}

.md-typeset code {
  border-radius: 6px;
  padding: 0.15em 0.4em;
  font-size: 0.88em;
  background: #f3f4f6;
  color: #be185d;
  border: 1px solid #e5e7eb;
}

.md-typeset pre code {
  background: none;
  color: inherit;
  border: none;
  padding: 0;
}

/* 코드 복사 버튼 */
.md-clipboard {
  color: #9ca3af !important;
}
.md-clipboard:hover {
  color: var(--ef-primary) !important;
}

/* --- 인용문 (blockquote) --- */
.md-typeset blockquote {
  border-left: 4px solid var(--ef-primary);
  background: var(--ef-primary-light);
  padding: 1rem 1.2rem;
  border-radius: 0 var(--ef-radius) var(--ef-radius) 0;
  margin: 1.5rem 0;
  color: #312e81;
}

.md-typeset blockquote p {
  color: #312e81;
}

/* --- 테이블 --- */
.md-typeset table:not([class]) {
  border-radius: var(--ef-radius);
  overflow: hidden;
  border: 1px solid var(--ef-border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  margin: 1.5rem 0;
  width: 100%;
}

.md-typeset table:not([class]) thead {
  background: linear-gradient(135deg, #f0f0ff, #ede9fe);
}

.md-typeset table:not([class]) th {
  color: #312e81;
  font-weight: 600;
  padding: 0.8rem 1rem;
  border-bottom: 2px solid #c7d2fe;
}

.md-typeset table:not([class]) td {
  padding: 0.7rem 1rem;
  border-bottom: 1px solid #f3f4f6;
}

.md-typeset table:not([class]) tbody tr:hover {
  background: #fafafa;
}

.md-typeset table:not([class]) tbody tr:last-child td {
  border-bottom: none;
}

/* --- 체크리스트 --- */
.md-typeset .task-list-item {
  list-style: none;
  padding-left: 0;
}

.md-typeset [type="checkbox"] {
  accent-color: var(--ef-primary);
  width: 1.1em;
  height: 1.1em;
  margin-right: 0.4em;
  vertical-align: -0.15em;
}

/* --- 어드모니션 (admonition) --- */
.md-typeset .admonition,
.md-typeset details {
  border-radius: var(--ef-radius) !important;
  border: 1px solid var(--ef-border) !important;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
  margin: 1.5rem 0;
  overflow: hidden;
}

.md-typeset .admonition-title,
.md-typeset summary {
  font-weight: 600;
  border-radius: 0 !important;
}

/* --- details/summary (접기/펼치기) --- */
.md-typeset details {
  background: var(--ef-card-bg);
}

.md-typeset details summary {
  padding: 0.8rem 1rem;
  cursor: pointer;
  background: #f9fafb;
  border-bottom: 1px solid var(--ef-border);
  font-weight: 600;
  color: var(--ef-text);
}

.md-typeset details summary:hover {
  background: #f3f4f6;
}

.md-typeset details[open] summary {
  background: var(--ef-primary-light);
  color: var(--ef-primary);
}

.md-typeset details > *:not(summary) {
  padding: 0 1rem;
}

/* --- 목록 --- */
.md-typeset ul li,
.md-typeset ol li {
  margin-bottom: 0.3rem;
  line-height: 1.75;
}

/* --- 구분선 --- */
.md-typeset hr {
  border: none;
  border-top: 2px solid var(--ef-border);
  margin: 2.5rem 0;
}

/* --- Mermaid 다이어그램 --- */
.mermaid {
  background: #fafafa;
  border-radius: var(--ef-radius);
  padding: 1.5rem;
  border: 1px solid var(--ef-border);
  margin: 1.5rem 0;
  text-align: center;
}

/* --- Part 헤더 카드 스타일 (nav sections) --- */
.md-nav__item--nested > .md-nav__link {
  font-weight: 600;
  color: var(--ef-primary) !important;
}

/* --- 검색 --- */
.md-search__input {
  border-radius: 8px !important;
}

/* --- 하단 네비게이션 (이전/다음) --- */
.md-footer-nav__link {
  transition: all 0.2s;
}
.md-footer-nav__link:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* --- 스크롤바 --- */
.md-sidebar__scrollwrap::-webkit-scrollbar {
  width: 4px;
}
.md-sidebar__scrollwrap::-webkit-scrollbar-thumb {
  background: #d1d5db;
  border-radius: 4px;
}
.md-sidebar__scrollwrap::-webkit-scrollbar-thumb:hover {
  background: #9ca3af;
}

/* --- 이미지 --- */
.md-typeset img {
  border-radius: var(--ef-radius);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  margin: 1rem 0;
}

/* --- 강조 텍스트 --- */
.md-typeset strong {
  color: #111827;
}

.md-typeset mark,
.md-typeset .highlight {
  background: linear-gradient(120deg, #fef08a 0%, #fde68a 100%);
  padding: 0.1em 0.3em;
  border-radius: 4px;
}

/* --- 인쇄 최적화 --- */
@media print {
  .md-header,
  .md-tabs,
  .md-sidebar,
  .md-footer {
    display: none !important;
  }
  .md-content__inner {
    max-width: 100%;
  }
}

/* --- 모바일 최적화 --- */
@media (max-width: 768px) {
  .md-content__inner {
    padding: 1rem;
  }
  .md-typeset h1 {
    font-size: 1.6rem;
  }
  .md-typeset h2 {
    font-size: 1.3rem;
  }
}

/* 헤더 제목 클릭 시 홈으로 이동 */
.md-header__title { cursor: pointer; }