/* ============================================
   Signal — 다크/라이트 토글 테크 블로그 스킨
   ============================================ */

:root {
  --bg: #F7F7F5;
  --surface: #FFFFFF;
  --surface-hover: #F0F0EE;
  --border: #E4E4E1;
  --text: #16181D;
  --text-muted: #6B7280;
  --accent: #4C5FEF;
  --accent-soft: #EEF0FE;
  --tag: #B4791F;

  --font-sans: "PretendardVariable", "Pretendard", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;

  --radius: 10px;
  --header-h: 64px;
}

html[data-theme="dark"] {
  --bg: #0B0D12;
  --surface: #14171E;
  --surface-hover: #1B1F28;
  --border: #262B35;
  --text: #E8EAED;
  --text-muted: #9198A4;
  --accent: #7C8CFF;
  --accent-soft: rgba(124, 140, 255, 0.14);
  --tag: #E0A756;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
  transition: background .2s ease, color .2s ease;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; margin: 0; padding: 0; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  height: var(--header-h);
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 32px;
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 6px;
}

.logo-mark {
  font-family: var(--font-mono);
  color: var(--accent);
}

/* 티스토리가 [##_blog_menu_##] 자리에 자체 <ul><li><a> 구조를 넣어줍니다.
   구조/클래스명이 스킨마다 달라서 태그 종류 자체를 넓게 잡아 스타일을 겁니다. */
.main-nav {
  display: flex;
  gap: 20px;
  flex: 1;
  overflow-x: auto;
  font-size: .92rem;
}

.main-nav ul,
.main-nav ol {
  display: flex !important;
  gap: 20px !important;
  list-style: none !important;
  margin: 0 !important;
  padding: 0 !important;
}

.main-nav li { list-style: none !important; }

.main-nav a {
  color: var(--text-muted) !important;
  white-space: nowrap;
  padding: 4px 0 !important;
  border-bottom: 2px solid transparent !important;
  text-decoration: none !important;
  background: transparent !important;
}

.main-nav a:hover {
  color: var(--text) !important;
  border-bottom-color: var(--accent) !important;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.search-form input {
  width: 160px;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: .85rem;
}

.search-form input:focus {
  outline: none;
  border-color: var(--accent);
}

#theme-toggle {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
}

#theme-toggle .icon-moon { display: none; }
html[data-theme="dark"] #theme-toggle .icon-sun { display: none; }
html[data-theme="dark"] #theme-toggle .icon-moon { display: block; }

.category-strip {
  max-width: 1200px;
  margin: 0 auto;
  padding: 10px 24px 14px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
}

.chip {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: .78rem;
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  display: flex;
  gap: 6px;
}

.chip:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.chip span {
  opacity: .6;
}

/* ---------- Layout ---------- */
.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px 64px;
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 40px;
  align-items: start;
}

/* ---------- Post cards (list page) ---------- */
.content {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-content: start;
}

.post-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .15s ease, transform .15s ease;
}

.post-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.post-thumb {
  display: block;
  aspect-ratio: 16 / 9;
  background: var(--surface-hover);
  overflow: hidden;
}

.post-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.post-body {
  padding: 16px;
}

.post-category {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--tag);
}

.post-title {
  margin: 6px 0 8px;
  font-size: 1.02rem;
  line-height: 1.4;
}

.post-title a:hover { color: var(--accent); }

.post-desc {
  margin: 0 0 12px;
  font-size: .87rem;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-meta {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--text-muted);
}

/* ---------- Single post page ---------- */
.post-single {
  grid-column: 1 / -1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
}

.post-single-header h1 {
  font-size: 1.7rem;
  margin: 10px 0;
}

.post-content {
  margin-top: 24px;
  font-size: 1rem;
  line-height: 1.85;
}

.post-content img { border-radius: 8px; }

.post-content pre {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: .85rem;
}

.post-content code {
  font-family: var(--font-mono);
  background: var(--accent-soft);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: .88em;
}

/* ---------- Pagination ---------- */
.pagination {
  grid-column: 1 / -1;
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--text-muted);
}

/* ---------- Sidebar ---------- */
.site-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.widget {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}

.widget h3 {
  margin: 0 0 12px;
  font-size: .85rem;
  color: var(--text-muted);
}

/* ===== [##_category_##] 위젯 오버라이드 =====
   티스토리가 자체적으로 표/목록 구조 + 인라인 스타일을 내려줍니다.
   구조를 건드릴 수 없으니 태그 단위로 !important를 걸어 톤만 맞춥니다.
   실제 태그 구조(예: <table> vs <ul>)는 미리보기에서 개발자도구로 확인해서
   선택자를 좁혀주면 더 깔끔해져요. */
.widget-category * {
  background: transparent !important;
  border-color: var(--border) !important;
  color: var(--text) !important;
  font-family: var(--font-sans) !important;
  font-size: .88rem !important;
  line-height: 1.9 !important;
}

.widget-category a {
  color: var(--text) !important;
  text-decoration: none !important;
}

.widget-category a:hover {
  color: var(--accent) !important;
}

.widget-category table {
  width: 100% !important;
}

/* 카테고리 글 개수 등 괄호 숫자 */
.widget-category span,
.widget-category em {
  color: var(--text-muted) !important;
  font-family: var(--font-mono) !important;
  font-size: .78rem !important;
}

/* 대분류/소분류 펼침 아이콘이 있는 스킨의 경우 */
.widget-category img {
  vertical-align: middle !important;
}

.recent-list li a {
  display: block;
  padding: 6px 0;
  font-size: .86rem;
  color: var(--text);
  border-bottom: 1px dashed var(--border);
}

.recent-list li a:hover { color: var(--accent); }

.visitor-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  text-align: center;
}

.visitor-grid span {
  display: block;
  font-size: .74rem;
  color: var(--text-muted);
}

.visitor-grid strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  margin-top: 2px;
}

.search-form input { }

.page-numbers { display: flex; gap: 4px; }
.page-num, .page-btn {
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
}
.page-num:hover, .page-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Footer ---------- */
.site-footer {
  text-align: center;
  padding: 32px 0;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: .82rem;
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .page { grid-template-columns: 1fr; }
  .content { grid-template-columns: repeat(2, 1fr); }
  .main-nav { display: none; }
}

@media (max-width: 600px) {
  .content { grid-template-columns: 1fr; }
  .header-inner { gap: 12px; }
  .search-form { display: none; }
  .post-single { padding: 24px; }
}