/* ── Doctor AI Global Navigation — dai-nav.css ───────────────────────────── */

/* 기존 topnav 숨김 (dai-nav.js가 .dai-replaced 클래스 추가) */
.dai-replaced { display: none !important; }

/* ── 글로벌 내비게이션 바 ─────────────────────────────────────────────────── */
.dai-global-nav {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(251, 247, 241, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid #ddd4c6;
  height: 54px;
  box-sizing: border-box;
}

.dai-nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

/* 브랜드 */
.dai-nav-brand {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}
.dai-nav-badge {
  font-size: 14px;
  font-weight: 800;
  color: #155d4b;
  letter-spacing: -0.3px;
  text-decoration: none;
  transition: opacity 0.14s;
}
.dai-nav-badge:hover { opacity: 0.75; }
.dai-nav-sep {
  font-size: 12px;
  color: #b0a89a;
  font-weight: 400;
  pointer-events: none;
  user-select: none;
}
.dai-nav-site {
  font-size: 12px;
  color: #5f6870;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.14s;
}
.dai-nav-site:hover { color: #1d2328; }

/* 섹션 링크 (데스크톱) */
.dai-nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1;
  justify-content: center;
}
.dai-nav-links a {
  display: inline-block;
  padding: 5px 11px;
  border-radius: 8px;
  font-size: 13.5px;
  font-weight: 600;
  color: #5f6870;
  text-decoration: none;
  transition: background 0.14s, color 0.14s;
  white-space: nowrap;
}
.dai-nav-links a:hover {
  background: rgba(21, 93, 75, 0.07);
  color: #155d4b;
}
/* 현재 섹션 강조 — 섹션별 컬러 */
.dai-nav-links a[data-section="fundamentals"][aria-current="section"] {
  color: #155d4b;
  background: rgba(21, 93, 75, 0.1);
}
.dai-nav-links a[data-section="prompts"][aria-current="section"] {
  color: #1e4080;
  background: rgba(30, 64, 128, 0.1);
}
.dai-nav-links a[data-section="cases"][aria-current="section"] {
  color: #4c2a8a;
  background: rgba(76, 42, 138, 0.1);
}
.dai-nav-links a[data-section="tools"][aria-current="section"] {
  color: #7c2d12;
  background: rgba(124, 45, 18, 0.1);
}

/* 우측 영역 */
.dai-nav-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

/* ── 햄버거 버튼 ──────────────────────────────────────────────────────────── */
.dai-hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  background: transparent;
  border: 1px solid #ddd4c6;
  border-radius: 9px;
  cursor: pointer;
  padding: 9px 8px;
  flex-shrink: 0;
  transition: background 0.14s, border-color 0.14s;
}
.dai-hamburger:hover {
  background: rgba(21, 93, 75, 0.07);
  border-color: #c5bdb0;
}
.dai-hamburger span {
  display: block;
  height: 1.8px;
  background: #1d2328;
  border-radius: 2px;
  transform-origin: center;
  transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.18s ease,
              width 0.18s ease;
}
/* X 변환 (열림 상태) */
.dai-hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6.8px) rotate(45deg);
}
.dai-hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.dai-hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6.8px) rotate(-45deg);
}

/* ── 오버레이 ─────────────────────────────────────────────────────────────── */
.dai-overlay {
  position: fixed;
  inset: 0;
  background: rgba(29, 35, 40, 0.4);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  z-index: 290;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.26s ease;
}
.dai-overlay--visible {
  opacity: 1;
  pointer-events: auto;
}

/* ── 드로어 (사이트맵 패널) ──────────────────────────────────────────────── */
.dai-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 296px;
  max-width: 90vw;
  height: 100dvh;
  height: 100vh; /* fallback */
  background: #fffdf9;
  border-left: 1px solid #ddd4c6;
  box-shadow: -6px 0 36px rgba(29, 35, 40, 0.13);
  z-index: 300;
  overflow-y: auto;
  overscroll-behavior: contain;
  transform: translateX(100%);
  transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
}
.dai-drawer--open {
  transform: translateX(0);
}

/* 드로어 헤더 */
.dai-drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid #ece6dd;
  position: sticky;
  top: 0;
  background: #fffdf9;
  z-index: 1;
  flex-shrink: 0;
}
.dai-drawer-title {
  font-size: 13px;
  font-weight: 700;
  color: #5f6870;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.dai-drawer-close {
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f2ebe2;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 14px;
  color: #5f6870;
  transition: background 0.14s, color 0.14s;
}
.dai-drawer-close:hover {
  background: #e6ddd2;
  color: #1d2328;
}

/* 허브 링크 */
.dai-drawer-hub {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 13px 18px;
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 700;
  color: #155d4b;
  background: rgba(21, 93, 75, 0.05);
  border-bottom: 1px solid #ece6dd;
  transition: background 0.14s;
}
.dai-drawer-hub:hover {
  background: rgba(21, 93, 75, 0.1);
}
.dai-drawer-hub-icon { font-size: 15px; }

/* 드로어 본문 */
.dai-drawer-body {
  flex: 1;
  padding: 6px 0 28px;
}

/* ── 아코디언 트리 섹션 ───────────────────────────────────────────────────── */
.dai-tree-section { margin-bottom: 2px; }

/* 토글 버튼 */
.dai-tree-toggle {
  display: flex;
  align-items: center;
  gap: 7px;
  width: 100%;
  padding: 10px 16px 10px 18px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  border-radius: 0;
  transition: background 0.13s;
}
.dai-tree-toggle:hover {
  background: rgba(29, 35, 40, 0.04);
}
.dai-tree-icon  { font-size: 14px; flex-shrink: 0; }
.dai-tree-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  flex: 1;
}
.dai-tree-count {
  font-size: 11px;
  font-weight: 500;
  opacity: 0.5;
  flex-shrink: 0;
}
.dai-tree-chevron {
  font-size: 14px;
  flex-shrink: 0;
  opacity: 0.5;
  transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-block;
}
.dai-tree-toggle[aria-expanded="true"] .dai-tree-chevron {
  transform: rotate(90deg);
  opacity: 0.8;
}

/* 섹션별 레이블 컬러 */
[data-section="fundamentals"] .dai-tree-label { color: #155d4b; }
[data-section="prompts"]      .dai-tree-label { color: #1e4080; }
[data-section="cases"]        .dai-tree-label { color: #4c2a8a; }
[data-section="tools"]        .dai-tree-label { color: #7c2d12; }

/* 아티클 링크 목록 — 기본 접힘 */
.dai-tree-links {
  list-style: none;
  margin: 0;
  padding: 0 10px 4px;
  display: none; /* 기본 접힘 */
  overflow: hidden;
}
.dai-tree-links.dai-tree-open {
  display: block;
}
.dai-tree-links a {
  display: block;
  padding: 6px 10px;
  border-radius: 7px;
  font-size: 13px;
  color: #3a454a;
  text-decoration: none;
  line-height: 1.45;
  transition: background 0.12s, color 0.12s;
}
.dai-tree-links a:hover {
  background: rgba(29, 35, 40, 0.05);
  color: #1d2328;
}

/* 현재 페이지 강조 */
[data-section="fundamentals"] .dai-tree-links a[aria-current="page"] {
  font-weight: 700;
  background: rgba(21, 93, 75, 0.1);
  color: #155d4b;
}
[data-section="prompts"] .dai-tree-links a[aria-current="page"] {
  font-weight: 700;
  background: rgba(30, 64, 128, 0.1);
  color: #1e4080;
}
[data-section="cases"] .dai-tree-links a[aria-current="page"] {
  font-weight: 700;
  background: rgba(76, 42, 138, 0.1);
  color: #4c2a8a;
}
[data-section="tools"] .dai-tree-links a[aria-current="page"] {
  font-weight: 700;
  background: rgba(124, 45, 18, 0.1);
  color: #7c2d12;
}

/* 섹션 구분선 */
.dai-drawer-divider {
  height: 1px;
  background: #ece6dd;
  margin: 6px 18px;
}

/* ── 반응형 ───────────────────────────────────────────────────────────────── */
@media (max-width: 680px) {
  .dai-nav-links { display: none; }
  .dai-nav-site, .dai-nav-sep { display: none; }
}

/* ── 모션 감소 선호 ───────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .dai-drawer,
  .dai-overlay,
  .dai-hamburger span {
    transition: none !important;
  }
}