/* ===== index.css — 랜딩 페이지 전용 스타일 ===== */
/* @font-face, :root 변수, 리셋, body는 editorial-base.css에서 상속 */

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 80px 24px 120px;
}

/* Masthead (landing page override) */
.masthead {
  margin-bottom: 48px;
}

.masthead .site-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 24px;
}

.masthead h1 {
  font-weight: 400;
}

.masthead h1 strong {
  font-weight: 900;
  color: var(--accent);
}

.masthead .subtitle {
  font-size: 1.1rem;
  color: var(--secondary);
  line-height: 1.7;
}

/* Toolbar: 검색 + 컨트롤 */
.toolbar {
  margin-bottom: 16px;
}

.search-input {
  width: 100%;
  padding: 14px 20px;
  font-family: var(--serif);
  font-size: 1rem;
  border: 1px solid var(--rule);
  background: var(--bg);
  color: var(--fg);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-input::placeholder {
  color: var(--muted);
}

.search-input:focus {
  border-color: var(--fg);
  box-shadow: 0 0 0 3px rgba(196, 62, 42, 0.08);
}

.toolbar-meta {
  display: flex;
  align-items: center;
  margin-top: 12px;
  min-height: 28px;
}

.search-count {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 2px;
  color: var(--muted);
  text-transform: uppercase;
}

.controls {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

.control-btn {
  font-family: var(--serif);
  font-size: 0.8rem;
  color: var(--muted);
  background: none;
  border: 1px solid var(--rule);
  padding: 4px 14px;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
  white-space: nowrap;
}

.control-btn:hover {
  border-color: var(--fg);
  color: var(--fg);
}

.control-btn.active {
  border-color: var(--accent);
  color: var(--accent);
}

.no-results {
  text-align: center;
  padding: 48px 0;
  color: var(--muted);
  font-size: 1rem;
  display: none;
}

/* ===== Category Tabs ===== */
.category-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 32px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.category-tabs::-webkit-scrollbar {
  display: none;
}

.category-tab {
  font-family: var(--serif);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--secondary);
  background: none;
  border: 1px solid var(--rule);
  padding: 8px 20px;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s;
}

.category-tab:hover {
  border-color: var(--fg);
  color: var(--fg);
}

.category-tab.active {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}

/* ===== Main Layout (2-column: content + TOC sidebar) ===== */
.main-layout {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 40px;
  align-items: start;
}

/* ===== Card Grid ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  min-width: 0; /* prevent grid blowout */
}

/* Series Divider — full-width row inside the grid */
.series-divider {
  grid-column: 1 / -1;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 32px 0 12px 16px;
  border-bottom: 2px solid var(--fg);
  border-left: 4px solid var(--accent);
}

.series-divider:first-child {
  padding-top: 0;
}

.series-divider-num {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  white-space: nowrap;
}

.series-divider-title {
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1.3;
}

/* Pagination: hidden series/cards */
.paged-hidden {
  display: none !important;
}

.article-card {
  display: flex;
  flex-direction: column;
  background: var(--card-bg);
  border-radius: 4px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  border: 1px solid var(--rule);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.article-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 20px rgba(0, 0, 0, 0.08);
}

/* Thumbnail */
.card-thumbnail {
  position: relative;
  padding-top: 52.5%;  /* ~1.9:1 (OG 이미지 비율) */
  overflow: hidden;
  background: var(--rule);
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-thumbnail::after {
  content: 'Editorial';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--muted);
  opacity: 0.5;
  pointer-events: none;
}

.card-thumbnail img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

/* Card Body */
.card-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-desc {
  font-size: 0.85rem;
  color: var(--secondary);
  line-height: 1.5;
  margin-bottom: 12px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-meta {
  display: flex;
  align-items: center;
}

.card-tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.5px;
}

/* Dark mode shadow adjustment */
[data-theme="dark"] .article-card {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}

[data-theme="dark"] .article-card:hover {
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.35);
}

/* ===== Pagination UI ===== */
.pagination {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 48px 0 0;
}

.page-btn {
  font-family: var(--serif);
  font-size: 0.9rem;
  min-width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary);
  background: none;
  border: 1px solid var(--rule);
  cursor: pointer;
  transition: all 0.2s;
}

.page-btn:hover:not(:disabled):not(.active) {
  border-color: var(--fg);
  color: var(--fg);
}

.page-btn.active {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
  font-weight: 700;
}

.page-btn:disabled {
  opacity: 0.3;
  cursor: default;
}

.page-ellipsis {
  font-size: 0.9rem;
  color: var(--muted);
  padding: 0 4px;
}

.page-counter {
  width: 100%;
  text-align: center;
  margin-top: 8px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 1px;
  color: var(--muted);
}

/* ===== TOC Sidebar ===== */
.toc-sidebar {
  position: sticky;
  top: 24px;
  max-height: calc(100vh - 48px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.toc-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--fg);
  margin-bottom: 8px;
  flex-shrink: 0;
}

.toc-label {
  font-family: var(--serif);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--fg);
}

.toc-page-info {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 1px;
  color: var(--muted);
}

.toc-nav {
  overflow-y: auto;
  flex: 1;
  padding-right: 4px;
  scrollbar-width: thin;
  scrollbar-color: var(--rule) transparent;
}

.toc-nav::-webkit-scrollbar {
  width: 3px;
}

.toc-nav::-webkit-scrollbar-track {
  background: transparent;
}

.toc-nav::-webkit-scrollbar-thumb {
  background: var(--rule);
  border-radius: 3px;
}

/* TOC Category Groups */
.toc-category {
  margin-bottom: 4px;
}

.toc-category > summary {
  font-family: var(--serif);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--fg);
  padding: 8px 8px;
  cursor: pointer;
  list-style: none;
  border-left: 2px solid transparent;
  transition: background 0.2s;
}

.toc-category > summary::-webkit-details-marker {
  display: none;
}

.toc-category > summary::before {
  content: '\25B8';
  display: inline-block;
  margin-right: 6px;
  transition: transform 0.2s;
  font-size: 0.7rem;
}

.toc-category[open] > summary::before {
  transform: rotate(90deg);
}

.toc-category > summary:hover {
  background: var(--card-bg);
}

.toc-count {
  font-weight: 400;
  color: var(--muted);
  font-size: 0.7rem;
}

.toc-items {
  padding-left: 12px;
}

.toc-item {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 8px;
  text-decoration: none;
  color: var(--secondary);
  border-left: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
  font-size: 0.8rem;
  line-height: 1.4;
}

.toc-item:hover {
  color: var(--fg);
  background: var(--card-bg);
}

/* Active: currently visible in viewport */
.toc-item.active {
  color: var(--fg);
  border-left-color: var(--accent);
  font-weight: 600;
}

/* Not yet loaded (dimmed) */
.toc-item.unloaded {
  color: var(--muted);
  opacity: 0.5;
}

.toc-item.unloaded:hover {
  opacity: 0.8;
  color: var(--secondary);
}

.toc-title {
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== Scroll to Top ===== */
.scroll-top-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--muted);
  background: var(--bg);
  border: 1px solid var(--rule);
  padding: 10px 16px;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s, border-color 0.2s, color 0.2s;
}

.scroll-top-btn.visible {
  opacity: 1;
  pointer-events: auto;
}

.scroll-top-btn:hover {
  border-color: var(--fg);
  color: var(--fg);
}

/* ===== Mobile TOC ===== */
.toc-mobile-toggle {
  display: none; /* hidden on desktop */
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  font-family: var(--serif);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--bg);
  background: var(--fg);
  border: none;
  padding: 12px 20px;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  transition: transform 0.2s, box-shadow 0.2s;
}

.toc-mobile-toggle:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.toc-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1001;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  transition: opacity 0.3s;
}

.toc-overlay.open {
  opacity: 1;
}

/* Mobile sidebar (transforms into slide-in drawer) */
.toc-sidebar.mobile-open {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 1002;
  width: 280px;
  max-height: 100vh;
  background: var(--bg);
  padding: 24px 20px;
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.2);
  transform: translateX(0);
  transition: transform 0.3s ease;
  overflow-y: auto;
}

.toc-sidebar.mobile-closed {
  transform: translateX(100%);
}

/* Close button inside mobile drawer */
.toc-close-btn {
  display: none;
  font-family: var(--serif);
  font-size: 0.8rem;
  color: var(--muted);
  background: none;
  border: 1px solid var(--rule);
  padding: 6px 14px;
  cursor: pointer;
  margin-bottom: 16px;
}

.toc-sidebar.mobile-open .toc-close-btn {
  display: block;
}

/* Footer */
.site-footer {
  margin-top: 80px;
  padding-top: 32px;
  border-top: 1px solid var(--fg);
  text-align: center;
}

.site-footer p {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 2px;
  color: var(--muted);
  text-transform: uppercase;
}

.visitor-count {
  display: inline-block;
  min-width: 120px;
  padding: 8px 20px;
  margin-bottom: 12px;
  border: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 1px;
  color: var(--muted);
  text-align: center;
}

/* ===== Responsive ===== */

/* Large desktop: increase container for sidebar */
@media (min-width: 1200px) {
  .container {
    max-width: 1400px;
  }
}

/* Below 1200px: hide sidebar, show mobile toggle */
@media (max-width: 1199px) {
  .main-layout {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .toc-sidebar {
    display: none;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 1002;
    width: 280px;
    max-height: 100vh;
    background: var(--bg);
    padding: 24px 20px;
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.2);
    overflow-y: auto;
  }

  .toc-sidebar.mobile-open {
    display: flex;
  }

  .toc-mobile-toggle {
    display: block;
  }

  /* Mobile: stack Top button above TOC toggle */
  .scroll-top-btn {
    bottom: 72px;
    right: 24px;
  }
}

@media (max-width: 900px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .card-grid { grid-template-columns: 1fr; gap: 16px; }
  .container { max-width: 100%; padding: 48px 20px 80px; }
  .masthead h1 { font-size: 2.2rem; }
  .series-divider-title { font-size: 1.1rem; }
  .control-btn { font-size: 0.75rem; padding: 4px 10px; }
  /* 모바일에서 호버 비활성 */
  .article-card:hover { transform: none; }

  /* Category tabs mobile */
  .category-tabs { gap: 6px; margin-bottom: 24px; }
  .category-tab { font-size: 0.78rem; padding: 6px 14px; }

  .toc-sidebar.mobile-open {
    width: 260px;
    padding: 20px 16px;
  }

  .toc-mobile-toggle {
    bottom: 20px;
    right: 16px;
    padding: 10px 16px;
    font-size: 0.8rem;
  }
}