/* ============================================================
   네이버 AI 검색 대응 강의 메모 — 뷰어 스타일
   디자인 원칙: 정보 밀도 우선 / 사시 모드 금지 / Tailwind 표준 스케일
   ============================================================ */

:root {
  --bg: #ffffff;
  --bg-soft: #f6f7f9;
  --bg-sidebar: #fafbfc;
  --text: #1f2328;
  --text-muted: #57606a;
  --border: #d0d7de;
  --border-soft: #eaeef2;
  --accent: #0969da;
  --accent-soft: #dbeafe;
  --code-bg: #f3f4f6;
  --table-stripe: #f9fafb;
  --quote-bg: #f6f8fa;
  --quote-border: #d0d7de;
  --highlight: #fff8c5;
  --shadow: 0 1px 3px rgba(0,0,0,.06);

  --font-sans: 'Pretendard', -apple-system, 'Segoe UI', 'Apple SD Gothic Neo', 'Malgun Gothic', sans-serif;
  --font-mono: ui-monospace, 'SF Mono', Consolas, 'Liberation Mono', monospace;

  --sidebar-w: 280px;
  --content-max: 820px;
}

[data-theme="dark"] {
  --bg: #0d1117;
  --bg-soft: #161b22;
  --bg-sidebar: #010409;
  --text: #e6edf3;
  --text-muted: #8d96a0;
  --border: #30363d;
  --border-soft: #21262d;
  --accent: #58a6ff;
  --accent-soft: #1f3a5f;
  --code-bg: #161b22;
  --table-stripe: #161b22;
  --quote-bg: #161b22;
  --quote-border: #30363d;
  --highlight: #3a3000;
  --shadow: 0 1px 3px rgba(0,0,0,.4);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
  overflow-wrap: anywhere;
}

/* ===== 사이드바 ===== */
#sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 50;
}

.sidebar-header {
  flex-shrink: 0;
  padding: 16px;
  border-bottom: 1px solid var(--border-soft);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.sidebar-header h2 {
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: .5px;
  text-transform: uppercase;
}

/* 버전 선택기 (현업 / 쉬운) */
#version-switch {
  display: flex;
  background: var(--bg-soft);
  border: 1px solid var(--border-soft);
  border-radius: 6px;
  padding: 2px;
  gap: 2px;
}
#version-switch .ver-btn {
  flex: 1;
  padding: 6px 4px;
  background: transparent;
  color: var(--text-muted);
  border: 0;
  border-radius: 4px;
  font-size: 11.5px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background .12s, color .12s;
  white-space: nowrap;
}
#version-switch .ver-btn:hover {
  color: var(--text);
}
#version-switch .ver-btn.active {
  background: var(--bg);
  color: var(--accent);
  box-shadow: var(--shadow);
}
#toc-search {
  width: 100%;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
}
#toc-search:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
}

#toc {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 8px 0;
}
#toc ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
#toc li a {
  display: block;
  padding: 5px 16px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  line-height: 1.45;
  border-left: 2px solid transparent;
  transition: background .12s, color .12s, border-color .12s;
}
#toc li a:hover {
  background: var(--bg-soft);
  color: var(--text);
}
#toc li a.active {
  color: var(--accent);
  border-left-color: var(--accent);
  background: var(--accent-soft);
  font-weight: 600;
}
#toc li.toc-h2 > a {
  font-weight: 600;
  color: var(--text);
  padding-top: 10px;
  padding-bottom: 6px;
  font-size: 13.5px;
}
#toc li.toc-h3 > a {
  padding-left: 28px;
  font-size: 12.5px;
}

/* ===== 홈 링크 (모든 탭 우상단) ===== */
#home-link {
  position: fixed;
  top: 12px;
  right: 16px;
  z-index: 60;
  padding: 7px 12px;
  background: var(--bg);
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 12.5px;
  font-weight: 600;
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: background .12s, color .12s;
}
#home-link:hover {
  background: var(--bg-soft);
  color: var(--accent);
}

/* ===== 탭 버튼이 a 태그가 됐으니 링크 스타일 정리 ===== */
#version-switch a.ver-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

/* ===== 토글 버튼 (모바일) ===== */
#toc-toggle {
  display: none;
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 60;
  padding: 8px 14px;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  box-shadow: var(--shadow);
}

/* ===== 본문 ===== */
#content-wrapper {
  margin-left: var(--sidebar-w);
  padding: 48px 56px 80px;
  min-height: 100vh;
}

#content {
  max-width: var(--content-max);
  margin: 0 auto;
}

.loading, .error {
  padding: 24px;
  background: var(--bg-soft);
  border-radius: 8px;
  color: var(--text-muted);
}
.error {
  color: #b91c1c;
  background: #fef2f2;
  border: 1px solid #fecaca;
}
[data-theme="dark"] .error {
  color: #fca5a5;
  background: #2a0e0e;
  border-color: #7f1d1d;
}

/* ===== 타이포그래피 ===== */
#content h1 {
  font-size: 28px;
  font-weight: 800;
  margin: 0 0 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--border);
  line-height: 1.3;
}
#content h2 {
  font-size: 22px;
  font-weight: 700;
  margin: 48px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-soft);
  line-height: 1.35;
  scroll-margin-top: 24px;
}
#content h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 32px 0 12px;
  line-height: 1.4;
  scroll-margin-top: 24px;
}
#content h4 {
  font-size: 16px;
  font-weight: 700;
  margin: 24px 0 8px;
  color: var(--text);
}

#content p {
  margin: 0 0 14px;
}

#content a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .12s;
}
#content a:hover {
  border-bottom-color: var(--accent);
}

#content strong {
  font-weight: 700;
  color: var(--text);
}

#content ul, #content ol {
  margin: 0 0 14px;
  padding-left: 24px;
}
#content li {
  margin: 4px 0;
}
#content li > ul, #content li > ol {
  margin: 4px 0;
}

#content blockquote {
  margin: 16px 0;
  padding: 12px 16px;
  background: var(--quote-bg);
  border-left: 4px solid var(--quote-border);
  border-radius: 0 6px 6px 0;
  color: var(--text);
}
#content blockquote p:last-child {
  margin-bottom: 0;
}

/* 마케터 박스 (💼로 시작하는 인용) — 색 강조 */
#content blockquote:has(strong:first-child) {
  border-left-color: var(--accent);
  background: var(--accent-soft);
}

#content code {
  padding: 2px 6px;
  background: var(--code-bg);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.88em;
}
#content pre {
  margin: 16px 0;
  padding: 14px 18px;
  background: var(--code-bg);
  border: 1px solid var(--border-soft);
  border-radius: 8px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.55;
}
#content pre code {
  padding: 0;
  background: transparent;
  font-size: inherit;
}

#content table {
  width: 100%;
  margin: 16px 0;
  border-collapse: collapse;
  font-size: 14.5px;
}
#content th, #content td {
  padding: 8px 12px;
  border: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}
#content th {
  background: var(--bg-soft);
  font-weight: 700;
}
#content tr:nth-child(even) td {
  background: var(--table-stripe);
}

#content hr {
  margin: 32px 0;
  border: 0;
  border-top: 1px solid var(--border-soft);
}

#content img {
  max-width: 100%;
  border-radius: 6px;
  margin: 12px 0;
}

/* ===== 푸터 컨트롤 ===== */
footer {
  position: fixed;
  bottom: 16px;
  right: 16px;
  display: flex;
  gap: 6px;
  z-index: 40;
}
footer button {
  padding: 8px 12px;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: background .12s, opacity .12s;
}
footer button:hover {
  background: var(--bg-soft);
}

/* 다크모드 버튼 강조 (찾기 쉽게) */
#theme-toggle {
  font-weight: 600;
}
[data-theme="dark"] #theme-toggle {
  background: var(--bg-soft);
  border-color: var(--accent);
}

/* 숨겨진 현업 버전 링크 — 흐리게 표시, 호버 시 정상 */
.ver-btn-hidden {
  opacity: 0.35;
  font-size: 11px !important;
  padding: 6px 8px !important;
  color: var(--text-muted) !important;
}
.ver-btn-hidden:hover {
  opacity: 1;
}
.ver-btn-hidden.active {
  opacity: 1;
  color: var(--accent) !important;
  border-color: var(--accent) !important;
}

/* ===== 반응형 ===== */
@media (max-width: 900px) {
  #toc-toggle {
    display: block;
  }
  #sidebar {
    transform: translateX(-100%);
    transition: transform .25s;
    width: 85%;
    max-width: 320px;
  }
  body.sidebar-open #sidebar {
    transform: translateX(0);
    box-shadow: 4px 0 20px rgba(0,0,0,.2);
  }
  #content-wrapper {
    margin-left: 0;
    padding: 64px 20px 80px;
  }
  #content h1 { font-size: 24px; }
  #content h2 { font-size: 19px; }
  #content h3 { font-size: 16.5px; }
  #content table { font-size: 13.5px; }
}

/* ===== 인쇄 ===== */
@media print {
  #sidebar, #toc-toggle, footer { display: none; }
  #content-wrapper { margin: 0; padding: 0; }
  #content { max-width: 100%; }
  #content h2 { break-before: page; }
  body { font-size: 11pt; }
  #content blockquote { break-inside: avoid; }
  #content table { break-inside: avoid; }
}

/* ============================================================
   실행 가이드 카드 마커 (WHY / ACTION / CHECK / WATCH / DECIDE)
   ============================================================ */
#content h3.card-marker {
  margin: 18px 0 8px;
  padding: 6px 0 6px 12px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .3px;
  border-left: 3px solid var(--border);
  border-bottom: 0;
  text-transform: uppercase;
}

/* WHY = 앰버 (납득) */
#content h3.card-marker[id*="WHY"] {
  border-left-color: #d4a72c;
  color: #9a6700;
}
/* ACTION = 그린 (행동) */
#content h3.card-marker[id*="ACTION"] {
  border-left-color: #1f883d;
  color: #1a7f37;
}
/* CHECK = 블루 (검증) */
#content h3.card-marker[id*="CHECK"] {
  border-left-color: var(--accent);
  color: var(--accent);
}
/* WATCH OUT = 레드 (경고) */
#content h3.card-marker[id*="WATCH"] {
  border-left-color: #cf222e;
  color: #cf222e;
}
/* DECIDE = 그레이 (분기) */
#content h3.card-marker[id*="DECIDE"] {
  border-left-color: #6e7781;
  color: #57606a;
}

/* 다크모드 보정 */
[data-theme="dark"] #content h3.card-marker[id*="WHY"] { color: #e3b341; }
[data-theme="dark"] #content h3.card-marker[id*="ACTION"] { color: #3fb950; }
[data-theme="dark"] #content h3.card-marker[id*="WATCH"] { color: #ff7b72; }
[data-theme="dark"] #content h3.card-marker[id*="DECIDE"] { color: #8b949e; }

/* STEP 단위(h2) 시각 강조 — 실행 가이드의 STEP N 형식 */
#content h2:where([id^="step-"]) {
  margin-top: 56px;
  padding: 14px 18px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 8px;
}

/* WHY 직후 인용블록(💡로 시작)을 한 번 더 강조 */
#content h3.card-marker[id*="WHY"] + blockquote {
  border-left-color: #d4a72c;
  background: #fff8c5;
  color: #4d3800;
}
[data-theme="dark"] #content h3.card-marker[id*="WHY"] + blockquote {
  background: #3a3000;
  color: #e3b341;
  border-left-color: #d4a72c;
}

/* ===== 배포본 배너 (playbook 전용) ===== */
.deploy-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: var(--content-max);
  margin: 0 auto 20px;
  padding: 12px 16px;
  background: #fff1ed;
  border: 1px solid #fdd0c0;
  border-left: 4px solid #e05a2b;
  border-radius: 8px;
  text-decoration: none;
  color: inherit;
  transition: background .15s;
}
.deploy-banner:hover {
  background: #ffe4d9;
}
.deploy-banner:hover .deploy-banner-arrow {
  transform: translateX(3px);
}

.deploy-banner-tag {
  flex-shrink: 0;
  font-size: 11.5px;
  font-weight: 700;
  color: #c04a1a;
  background: #fdd0c0;
  border-radius: 4px;
  padding: 3px 7px;
  white-space: nowrap;
}

.deploy-banner-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.deploy-banner-title {
  font-size: 14px;
  font-weight: 600;
  color: #1f2328;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.deploy-banner-desc {
  font-size: 12px;
  color: #7a4030;
}

.deploy-banner-arrow {
  flex-shrink: 0;
  font-size: 16px;
  color: #e05a2b;
  transition: transform .15s;
}

/* 다크모드 */
[data-theme="dark"] .deploy-banner {
  background: #2a1208;
  border-color: #5a2510;
  border-left-color: #e05a2b;
}
[data-theme="dark"] .deploy-banner:hover {
  background: #3a1a0e;
}
[data-theme="dark"] .deploy-banner-tag {
  background: #4a1e0e;
  color: #f08060;
}
[data-theme="dark"] .deploy-banner-title {
  color: #e6edf3;
}
[data-theme="dark"] .deploy-banner-desc {
  color: #c07060;
}
[data-theme="dark"] .deploy-banner-arrow {
  color: #f08060;
}

/* 모바일 반응형 */
@media (max-width: 900px) {
  .deploy-banner {
    flex-wrap: wrap;
    gap: 8px;
  }
  .deploy-banner-title {
    white-space: normal;
  }
}

/* 스크롤바 */
#toc::-webkit-scrollbar { width: 6px; }
#toc::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
#toc::-webkit-scrollbar-track { background: transparent; }