/* ─────────────── 🎨 컬러 팔레트 (CSS 변수 선언) ─────────────── */
:root {
  /* 배경색 */
  --bg-main: #fff;
  --bg-box: #f5f5f5;
  --bg-hover: #f0f0f0;
  --bg-sidebar-btn: #eee;
  
  /* 텍스트 색상 */
  --text-main: #333;
  --text-sub: #777;
  --text-muted: #888;
  --text-link: #444;
  --text-link-hover: #000;
  
  /* 테두리 및 UI 요소 */
  --border-color: #ccc;
  --toggle-slider-bg: #ccc;
  --toggle-slider-active: #555;
  
  /* 포인트 컬러 */
  --highlight-bg: #b1c98d; /* 📌 하이라이트 배경색 */
  --highlight-text: #fff;
  
  /* Notice & Blocked Box 관련 */
  --notice-link-color: inherit;
  --blocked-text-color: inherit;
  --blocked-marker-color: #888;
}

/* 🌚 다크 모드 */
[data-theme="dark"] {
  --bg-main: #1e1e1e;
  --bg-box: #2a2a2a;
  --bg-hover: rgba(255, 255, 255, 0.1);
  --bg-sidebar-btn: #2a2a2a;
  
  --text-main: #e0e0e0;
  --text-sub: #ccc;
  --text-muted: #888;
  --text-link: #ccc;
  --text-link-hover: #fff;
  
  --border-color: #555;
  --toggle-slider-bg: #666;
  
  --notice-link-color: #ff6666;
  --blocked-text-color: #222;
  --blocked-marker-color: #666;
}

/* ─────────────── 🎨 기본 설정 ─────────────── */
html {
  scroll-behavior: smooth;
  overflow: auto; 
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none;  /* IE, Edge */
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Gowun Dodum', sans-serif;
  background: var(--bg-main);
  color: var(--text-main);
}

html::-webkit-scrollbar, body::-webkit-scrollbar {
  display: none;
}

.page-content.show {
  opacity: 1;
  transform: translateY(0);
}

.scroll-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  padding: 0.6rem 1rem;
  font-size: 1.2rem;
  background-color: var(--text-main);
  color: var(--bg-main);
  border: none;
  border-radius: 50px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  z-index: 1000;
}

.scroll-to-top.show {
  opacity: 1;
  visibility: visible;
}

/* ─────────────── 💬 고정 푸터 ─────────────── */
.footer {
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
  padding: 10px 20px;
  margin-top: 10px; 
  margin-bottom: 50px;
}

/* ─────────────── 📦 전체 래퍼(wrapper) ─────────────── */
.wrapper {
  position: relative; 
  max-width: 1000px;
  width: 100%;
  margin: 40px auto; 
  padding: 20px;
}

/* ─────────────── 🧭 헤더 툴바: 토글 & 뮤직 ─────────────── */
.header-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  padding: 0 6px;
}

.theme-toggle {
  margin-top: auto;
  padding: 20px;
  text-align: center;
}

.toggle-label {
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.toggle-label input { display: none; }

.toggle-label .slider {
  width: 40px;
  height: 20px;
  background: var(--toggle-slider-bg);
  border-radius: 10px;
  position: relative;
  transition: background 0.3s;
}

.toggle-label .slider::before {
  content: '';
  width: 16px;
  height: 16px;
  background: #fff;
  border-radius: 50%;
  position: absolute;
  top: 2px;
  left: 2px;
  transition: left 0.3s;
}

.toggle-label input:checked + .slider::before {
  left: 22px;
}

.toggle-label input:checked + .slider {
  background: var(--toggle-slider-active);
}

.toggle-text {
  font-size: 12px;
  color: var(--text-sub);
}

.inline-toggle {
  margin: 0;
  padding: 0;
  text-align: left;
}

/* 🎵 뮤직 버튼 */
.music-toggle {
  background: none;
  border: 1px solid var(--border-color);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 20px;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
  color: var(--text-main);
}

.music-toggle:hover {
  background: var(--bg-hover);
}

/* ─────────────── 🖼️ 헤더 영역 ─────────────── */
#main-header {
  width: 100%;
  background: transparent;
  margin-bottom: 0;
  display: flex;
  justify-content: center;
}

#main-header img {
  width: 100%;
  max-width: 1000px;
  height: auto;
  max-height: 120px;
  border-radius: 20px;
  object-fit: cover;
  display: block;
}

[data-theme="dark"] #main-header img {
  filter: brightness(0.8);
}

/* ─────────────── 📐 메인 레이아웃 ─────────────── */
.layout {
  display: flex;
  flex-wrap: nowrap;     
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
  align-items: flex-start;
}

/* ─────────────── 📎 사이드바 공통 ─────────────── */
.sidebar {
  width: 200px;
  flex-shrink: 0;
}

/* ─────────────── 🧑‍🎤 왼쪽 사이드바 ─────────────── */
.sidebar.left {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.profile .avatar {
  width: 80px;
  height: 80px;
  background-image: url('https://pbs.twimg.com/profile_images/2054942251881754625/OXDrCGac_400x400.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  border-radius: 50%;
  margin-bottom: 10px;
  background-color: var(--bg-sidebar-btn);
}

.profile .name {
  font-size: 20px;
  font-weight: bold;
}

.profile .desc {
  font-size: 14px;
  color: var(--text-sub);
}

.sidebar-toggle {
  display: none; 
  position: fixed; 
  bottom: 20px; 
  right: 20px; 
  z-index: 1001;
  background: var(--bg-sidebar-btn);
  border: none;
  padding: 10px 14px;
  border-radius: 50%;
  font-size: 24px;
  cursor: pointer;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

/* ─────────────── 🧭 메뉴 ─────────────── */
.menu {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.menu-item {
  text-decoration: none;
  color: var(--text-link);
  padding: 8px 12px;
  border-radius: 6px;
  transition: background 0.2s, color 0.2s;
}

.menu-item:hover {
  background: var(--bg-hover);
  color: var(--text-link-hover);
}

/* ─────────────── 📲 소셜 링크 ─────────────── */
.social h4 {
  font-size: 16px;
  margin-bottom: 10px;
}

.social-link {
  position: relative; 
  display: block;
  color: var(--text-link);
  text-decoration: none;
  margin-bottom: 8px;
  transition: color 0.2s;
}

.social-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  height: 1px;
  width: 0;
  background-color: var(--text-link-hover);
  transition: width 0.3s ease;
}

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

.social-link:hover::after {
  width: 100%;
}

/* ─────────────── 🖼️ 오른쪽 사이드바 ─────────────── */
.right-floating-sidebar {
  position: absolute;
  top: 0; 
  right: -180px; 
  width: 150px;
  height: 100%; 
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  margin-top: 40px;
}

.right-floating-sidebar .social a img {
  width: 100%;
  display: block;
  margin-bottom: 12px;
  border-radius: 5px;
  transition: filter 0.3s ease, transform 0.3s ease;
}

.right-floating-sidebar .social a img:hover {
  filter: blur(2px) brightness(0.9);
  transform: scale(1.01);
}

.right-floating-sidebar .my-banners {
  margin-top: 10px;
  margin-bottom: 24px;
}

.right-floating-sidebar .external-banners {
  margin-top: 0;
}

/* ─────────────── 📝 본문 콘텐츠 ─────────────── */
.main-content {
  flex: 1;
  max-width: 100%; 
  min-width: 0; 
}

.cover-title {
  font-size: 24px;
  margin-bottom: 16px;
}

.cover-image {
  height: 100%;
  width: 100%;
  max-height: 700px;
  object-fit: contain;
  margin-top: 0px;
  margin-bottom: 20px;  
  display: block;
  margin-left: auto;
  margin-right: auto;
}

/* ─────────────── 📄 본문용 박스 ─────────────── */
.content-box {
  background-color: var(--bg-box);
  border-radius: 12px;
  padding: 20px;
  font-size: 14px;
  line-height: 1.6;
  text-align: justify;
  text-indent: 1.5em;
  margin-bottom: 20px;
}

/* ─────────────── 🔗 Notice & Blocked Box 스타일 ─────────────── */
.notice-box {
  margin: 2rem 0;
}

.notice-title {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 0.5rem;
  font-family: 'Georgia', serif;
}

.notice-content {
  font-size: 0.95rem;
  line-height: 1.6;
}

.notice-link {
  color: var(--notice-link-color);
}

.notice-divider {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 2rem 0;
}

.notice-banner {
  width: 100%;
  border-radius: 12px;
  overflow: hidden;
  display: block;
  margin: 2rem 0;
}

.notice-banner img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.highlight-text {
  display: inline;
  background-color: var(--highlight-bg);
  color: var(--highlight-text);
  padding: 0.02em 0.3em; 
  border-radius: 3px;      
  font-weight: 500;        
  line-height: 1.4;
}

details.blocked-box {
  background-color: var(--bg-box);
  color: var(--blocked-text-color) !important;
  border-radius: 8px;
  padding: 1rem 1.5rem;
  margin: 2rem 0;
  font-size: 0.95rem;
  line-height: 1.6;
}

details.blocked-box summary,
details.blocked-box p,
details.blocked-box li {
  color: var(--blocked-text-color) !important;
}

details.blocked-box summary {
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  margin-bottom: 0.5rem;
}

details.blocked-box[open] summary {
  margin-bottom: 1rem;
}

details.blocked-box ul {
  padding-left: 1.2rem;
}

details.blocked-box li::marker {
  font-size: 0.7em;
  color: var(--blocked-marker-color) !important;
}

/* ─────────────── ✨ 로딩 애니메이션 ─────────────── */
.fade-in-up {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.6s ease forwards;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ─────────────── 📱 모바일 최적화 (화면 폭 768px 이하) ─────────────── */
@media (max-width: 768px) {
  .wrapper {
    max-width: 1200px;
    padding: 0 20px;
  }

  .header-toolbar {
    flex-wrap: nowrap;
  }

  .layout {
    flex-direction: column;
    padding: 20px 10px;
    gap: 20px;
  }

  .sidebar.left {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 250px;
    height: 100%;
    background: var(--bg-main);
    z-index: 1000;
    box-shadow: 2px 0 8px rgba(0,0,0,0.1);
    overflow-y: auto;
    padding: 20px 20px;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }

  .sidebar.left.active {
    display: block;
    transform: translateX(0);
  }

  .sidebar-toggle {
    display: block;
  }

  .profile .avatar {
    width: 60px;
    height: 60px;
  }

  .menu {
    gap: 12px;
    align-items: stretch;
    margin: 20px 0;
  }

  .menu-item {
    display: block;
    width: 100%;
    padding: 12px 12px;
    text-align: left;
    font-size: 16px;
  }

  .main-content {
    width: 100%;
    max-width: 100%;
  }

  .notice-title { font-size: 0.8rem; }
  .notice-content { font-size: 0.7rem; }
  .notice-link { font-size: 0.7rem; }
  .highlight-text { font-size: 0.68rem; }
  
  details.blocked-box { font-size: 0.7rem; }
  details.blocked-box summary { font-size: 0.8rem; }
  details.blocked-box li::marker { font-size: 0.6em; }

  .right-floating-sidebar {
    position: static;
    width: 100%;
    margin-top: 20px;
    flex-direction: row;
    justify-content: center;
    gap: 20px;
  }

  .right-floating-sidebar .social {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .right-floating-sidebar .social h4 {
    margin-bottom: 10px;
    text-align: center;
  }

  .right-floating-sidebar .my-banners {
    display: flex;
    justify-content: center;
    margin-bottom: 24px;
  }

  .right-floating-sidebar .my-banners a img {
    width: 120px;
    height: auto;
  }

  .right-floating-sidebar .external-banners {
    display: flex;
    flex-direction: row;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
  }

  .right-floating-sidebar .external-banners a img {
    width: 100px;
    height: auto;
  }

  .footer {
    font-size: 11px;
    padding: 8px 10px;
  }

  .cover-image {
    max-height: 400px;
  }

  .scroll-to-top {
    bottom: 80px;
    right: 20px;
    z-index: 1002;
  }
}

/* ─────────────── 📦 갤러리 영역 ─────────────── */
.gallery-container {
  padding: 20px;
  text-align: center;
}

.gallery-title {
   font-size: 24px;
  margin-bottom: 6px;
   font-family: 'Georgia', serif;
}

.gallery-columns {
  display: flex;
  gap: 20px; 
  justify-content: center;
}

.column {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 20px; 
}

.gallery-credit {
  font-size: 0.75rem;
  color: #888;
  margin-top: 6px;
  text-align: center;
}

.gallery-item {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.gallery-item img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  display: block;
  transition: transform 0.3s ease; 
}

.gallery-item img:hover {
  transform: scale(1.03);
}

.full-gallery-image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 0;         
  object-fit: contain;      
  margin-bottom: 0.75rem;  
}

.gallery-detail {
  text-align: center;
}