/* EduFlow 2 Custom Stylesheet — 템플릿 테마 적용 (paper-curation 스타일) */

/* ==============================
   1. 타이포그래피 & 전체 레이아웃
   ============================== */
:root {
  --ef-primary: #4F46E5;
  --ef-primary-light: #EEF2FF;
  --ef-accent: #3730A3;
  --ef-accent-light: #EEF2FF;
  --ef-warm: #f59e0b;
  --ef-warm-light: #fef3c7;
  --ef-success: #059669;
  --ef-success-light: #d1fae5;
  --ef-text: #1e293b;
  --ef-text-muted: #64748b;
  --ef-bg-subtle: #f8fafc;
  --ef-border: #e2e8f0;
  --ef-radius: 12px;
  --ef-shadow: 0 1px 3px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
  --ef-shadow-lg: 0 4px 16px rgba(0,0,0,0.1), 0 8px 32px rgba(0,0,0,0.06);
}

[data-md-color-scheme="slate"] {
  --ef-primary: #60a5fa;
  --ef-primary-light: #1e3a5f;
  --ef-accent: #22d3ee;
  --ef-accent-light: #164e63;
  --ef-warm: #fbbf24;
  --ef-warm-light: #451a03;
  --ef-success: #34d399;
  --ef-success-light: #064e3b;
  --ef-text: #e2e8f0;
  --ef-text-muted: #94a3b8;
  --ef-bg-subtle: #1e293b;
  --ef-border: #334155;
  --ef-shadow: 0 1px 3px rgba(0,0,0,0.3), 0 4px 12px rgba(0,0,0,0.2);
  --ef-shadow-lg: 0 4px 16px rgba(0,0,0,0.4), 0 8px 32px rgba(0,0,0,0.3);
}

.md-typeset {
  font-size: 0.85rem;
  line-height: 1.8;
  letter-spacing: -0.01em;
}

.md-typeset p {
  margin-bottom: 1em;
}

.md-typeset h1 {
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.8em;
  background: linear-gradient(135deg, var(--ef-primary), var(--ef-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.md-typeset h2 {
  font-weight: 700;
  padding-bottom: 0.3em;
  border-bottom: 2px solid var(--ef-border);
  margin-top: 2em;
}

.md-typeset h3 {
  font-weight: 600;
  color: var(--ef-primary);
}

/* ==============================
   2. 이미지 카드 스타일
   ============================== */
.md-typeset img {
  border-radius: var(--ef-radius);
  box-shadow: var(--ef-shadow-lg);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  margin: 1.5em auto;
  display: block;
  max-width: 100%;
}

.md-typeset img:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

/* 이미지 캡션 (alt 텍스트) */
.md-typeset img + em,
.md-typeset figure figcaption {
  display: block;
  text-align: center;
  font-size: 0.85em;
  color: var(--ef-text-muted);
  margin-top: -0.8em;
  margin-bottom: 1.5em;
  font-style: italic;
}

/* ==============================
   3. Admonition 커스텀 (학습 목표, 활동, 실습)
   ============================== */
.md-typeset .admonition,
.md-typeset details {
  border-radius: var(--ef-radius);
  box-shadow: var(--ef-shadow);
  border: none;
  overflow: hidden;
}

/* 학습 목표 = info/abstract */
.md-typeset .admonition.info,
.md-typeset .admonition.abstract {
  background: linear-gradient(135deg, var(--ef-primary-light), transparent);
  border-left: 4px solid var(--ef-primary);
}

/* 활동/실습 = tip/example */
.md-typeset .admonition.tip,
.md-typeset .admonition.example {
  background: linear-gradient(135deg, var(--ef-success-light), transparent);
  border-left: 4px solid var(--ef-success);
}

/* 주의/경고 = warning */
.md-typeset .admonition.warning {
  background: linear-gradient(135deg, var(--ef-warm-light), transparent);
  border-left: 4px solid var(--ef-warm);
}

/* ==============================
   4. 코드 블록 스타일
   ============================== */
.md-typeset pre {
  border-radius: var(--ef-radius);
  box-shadow: var(--ef-shadow);
}

.md-typeset code {
  border-radius: 4px;
  font-size: 0.88em;
  padding: 0.15em 0.4em;
}

/* ==============================
   5. 테이블 스타일
   ============================== */
.md-typeset table:not([class]) {
  border-radius: var(--ef-radius);
  overflow: hidden;
  box-shadow: var(--ef-shadow);
  border: 1px solid var(--ef-border);
}

.md-typeset table:not([class]) th {
  background: linear-gradient(135deg, var(--ef-primary), var(--ef-accent));
  color: white;
  font-weight: 600;
}

/* ==============================
   6. 네비게이션 & 헤더
   ============================== */
.md-header {
  box-shadow: var(--ef-shadow);
}

.md-tabs {
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

/* ==============================
   7. Footer 크레딧
   ============================== */
.md-footer-meta {
  background: linear-gradient(135deg, #1e293b, #0f172a);
}

.md-footer-meta .md-footer-meta__inner {
  color: #94a3b8;
}

/* ==============================
   8. 인쇄 스타일
   ============================== */
@media print {
  .md-typeset img {
    box-shadow: none;
    border: 1px solid #ddd;
  }
  .md-typeset .admonition {
    box-shadow: none;
    border: 1px solid #ddd;
  }
}

/* ==============================
   9. 이미지 & Mermaid 라이트박스
   ============================== */
.md-content img:not(.twemoji):not(.emojione):not(.mermaid img) {
  cursor: zoom-in;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.md-content img:not(.twemoji):not(.emojione):not(.mermaid img):hover {
  transform: scale(1.02);
  box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}
.mermaid svg { cursor: zoom-in; }
.mermaid:has(svg):hover { box-shadow: 0 4px 20px rgba(0,0,0,0.1); border-radius: 8px; }

.ef-lightbox {
  position: fixed; top: 0; left: 0; width: 100vw; height: 100vh;
  background: rgba(0,0,0,0.92); z-index: 9999;
  display: none; align-items: center; justify-content: center;
  flex-direction: column;
  cursor: zoom-out; opacity: 0; transition: opacity 0.3s ease;
}
.ef-lightbox.active { opacity: 1; }
.ef-lightbox-body { display: flex; align-items: center; justify-content: center; width: 100%; height: 100%; }
.ef-lightbox-body > img {
  max-width: 92vw; max-height: 88vh;
  object-fit: contain; border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  transform: scale(0.9); transition: transform 0.3s ease;
}
.ef-lightbox.active .ef-lightbox-body > img { transform: scale(1); }
.ef-lightbox-body .ef-svg-wrapper {
  background: #fff; border-radius: 16px; padding: 1.5rem 2rem;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  width: 94vw; max-height: 90vh; overflow: auto;
  display: flex; align-items: center; justify-content: center;
  transform: scale(0.9); transition: transform 0.3s ease;
}
.ef-lightbox.active .ef-svg-wrapper { transform: scale(1); }
.ef-lightbox-body .ef-svg-wrapper svg {
  width: 100% !important; height: auto !important;
  max-height: 84vh; min-width: 88vw;
}
.ef-lightbox-caption {
  position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%);
  color: rgba(255,255,255,0.85); font-size: 0.95rem; text-align: center;
  max-width: 80vw; padding: 8px 20px;
  background: rgba(0,0,0,0.5); border-radius: 8px;
}
.ef-lightbox-close {
  position: absolute; top: 20px; right: 28px;
  color: #fff; font-size: 2rem; cursor: pointer;
  width: 44px; height: 44px; display: flex; align-items: center; justify-content: center;
  border-radius: 50%; background: rgba(255,255,255,0.1);
  transition: background 0.2s; z-index: 10000;
}
.ef-lightbox-close:hover { background: rgba(255,255,255,0.25); }