/* ============================================================
   Janus Note 커뮤니티 — Reddit식 고밀도 레이아웃
   노트앱과 100% 동일한 4테마 변수 (base.css에서 이식)
============================================================ */

:root {
  --font-base: 'Noto Sans KR', 'Noto Sans', system-ui, -apple-system, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --t-fast: 180ms var(--ease);
  --rail-w: 300px;
}

/* ===== WHITE (default) ===== */
[data-theme="white"] {
  --bg: #FFFFFF; --bg-soft: #FAFAFA; --surface: #FFFFFF; --surface-2: #F4F4F4;
  --border: rgba(0,0,0,0.07); --border-strong: rgba(0,0,0,0.16);
  --ink: #000000; --ink-2: #2A2D34; --ink-3: #6B6E76; --ink-4: #9A9DA4;
  --accent: #9A6F09; --accent-soft: rgba(154,111,9,0.10);
  --face-private: #1A1E2A; --face-open: #9A6F09;
  --shadow-1: 0 1px 2px rgba(0,0,0,0.04); --shadow-2: 0 8px 24px rgba(0,0,0,0.06); --shadow-3: 0 24px 60px rgba(0,0,0,0.10);
  --upvote: #D93900;
}
/* ===== LIGHT (warm cream) ===== */
[data-theme="light"] {
  --bg: #FAFAF7; --bg-soft: #F0EEE8; --surface: #FFFFFF; --surface-2: #EAE7DF;
  --border: rgba(20,22,27,0.10); --border-strong: rgba(20,22,27,0.20);
  --ink: #0A0B0E; --ink-2: #2A2D34; --ink-3: #5A5E68; --ink-4: #8E929C;
  --accent: #9A6F09; --accent-soft: rgba(154,111,9,0.12);
  --face-private: #1A1E2A; --face-open: #9A6F09;
  --shadow-1: 0 1px 2px rgba(20,22,27,0.05); --shadow-2: 0 8px 24px rgba(20,22,27,0.10); --shadow-3: 0 24px 60px rgba(20,22,27,0.16);
  --upvote: #C44200;
}
/* ===== MEDIUM (warm brown) ===== */
[data-theme="medium"] {
  --bg: #2A2825; --bg-soft: #221F1C; --surface: #34312D; --surface-2: #2E2B27;
  --border: rgba(245,240,228,0.10); --border-strong: rgba(245,240,228,0.22);
  --ink: #FAF6E8; --ink-2: #D8D2BF; --ink-3: #A8A092; --ink-4: #6E6757;
  --accent: #E8BC4E; --accent-soft: rgba(232,188,78,0.16);
  --face-private: #C8D6EC; --face-open: #E8BC4E;
  --shadow-1: 0 1px 2px rgba(0,0,0,0.3); --shadow-2: 0 8px 24px rgba(0,0,0,0.4); --shadow-3: 0 24px 60px rgba(0,0,0,0.55);
  --upvote: #FF6A33;
}
/* ===== DARK ===== */
[data-theme="dark"] {
  --bg: #0E1014; --bg-soft: #0A0C10; --surface: #15181E; --surface-2: #11141A;
  --border: rgba(245,240,228,0.08); --border-strong: rgba(245,240,228,0.18);
  --ink: #FFFFFF; --ink-2: #C8CCD4; --ink-3: #9499A2; --ink-4: #5C616B;
  --accent: #EBC152; --accent-soft: rgba(235,193,82,0.16);
  --face-private: #BCD0E8; --face-open: #EBC152;
  --shadow-1: 0 1px 2px rgba(0,0,0,0.5); --shadow-2: 0 8px 24px rgba(0,0,0,0.6); --shadow-3: 0 24px 60px rgba(0,0,0,0.75);
  --upvote: #FF6A33;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-base);
  background: var(--bg-soft);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }

/* ============================================================
   헤더 — 컴팩트, 기능적
============================================================ */
.hdr {
  position: sticky; top: 0; z-index: 100;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  height: 52px;
}
.hdr-in {
  max-width: 1200px; margin: 0 auto; height: 100%;
  padding: 0 16px; display: flex; align-items: center; gap: 8px;
}
.brand {
  display: flex; align-items: center; gap: 9px;
  font-weight: 800; font-size: 1.05rem; letter-spacing: -0.02em;
  color: var(--ink); margin-right: 12px;
}
.mark {
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--face-private); position: relative; overflow: hidden; flex-shrink: 0;
}
.mark::before { content:''; position:absolute; top:0; left:0; bottom:0; width:50%; background: var(--accent); }
.mark::after { content:''; position:absolute; top:50%; left:50%; width:5px; height:5px; border-radius:50%; background: var(--surface); transform: translate(-50%,-50%); }

.nav { display: flex; gap: 2px; }
.nav a {
  padding: 7px 13px; border-radius: 8px;
  font-size: 0.9rem; font-weight: 600; color: var(--ink-3);
  transition: background var(--t-fast), color var(--t-fast);
}
.nav a:hover { background: var(--surface-2); color: var(--ink); }
.nav a.on { background: var(--accent-soft); color: var(--accent); }

.hdr-r { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.uchip { font-size: 0.84rem; color: var(--ink-3); font-weight: 600; display: none; }

/* 테마 토글 */
.theme-toggle { display: flex; gap: 2px; background: var(--surface-2); padding: 3px; border-radius: 8px; }
.theme-toggle button {
  width: 24px; height: 24px; border: none; border-radius: 6px;
  background: transparent; display: flex; align-items: center; justify-content: center;
  position: relative; transition: transform var(--t-fast);
}
.theme-toggle button:hover { transform: scale(1.12); }
.theme-toggle button .swatch {
  width: 15px; height: 15px; border-radius: 50%;
  border: 1.5px solid var(--border-strong);
}
.theme-toggle button.on { box-shadow: 0 0 0 2px var(--accent); }
.theme-toggle button[data-theme="white"]  .swatch { background: #FFFFFF; }
.theme-toggle button[data-theme="light"]  .swatch { background: #FAFAF7; }
.theme-toggle button[data-theme="medium"] .swatch { background: #2A2825; }
.theme-toggle button[data-theme="dark"]   .swatch { background: #0E1014; }

.go {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: 8px;
  background: var(--accent); color: #fff; font-size: 0.86rem; font-weight: 700;
  transition: opacity var(--t-fast);
}
[data-theme="medium"] .go, [data-theme="dark"] .go { color: #1A1714; }
.go:hover { opacity: 0.88; }

/* ============================================================
   본문 레이아웃 — 중앙 콘텐츠 + 우측 사이드바
============================================================ */
.layout {
  max-width: 1200px; margin: 0 auto; padding: 16px;
  display: grid; grid-template-columns: 1fr var(--rail-w); gap: 24px; align-items: start;
}
.main { min-width: 0; }
.rail { position: sticky; top: 68px; display: flex; flex-direction: column; gap: 16px; }

/* ============================================================
   정렬 바 — sticky, 컴팩트
============================================================ */
.sortbar {
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: 8px 12px; margin-bottom: 12px;
  position: sticky; top: 60px; z-index: 40;
}
.sort {
  padding: 6px 12px; border: none; border-radius: 99px; background: transparent;
  font-size: 0.86rem; font-weight: 700; color: var(--ink-3);
  transition: background var(--t-fast), color var(--t-fast);
}
.sort:hover { background: var(--surface-2); color: var(--ink); }
.sort.on { background: var(--accent-soft); color: var(--accent); }
.sortbar .spacer { flex: 1; }
.search {
  display: flex; align-items: center; gap: 7px;
  background: var(--bg-soft); border: 1px solid var(--border);
  border-radius: 99px; padding: 6px 13px; min-width: 200px;
}
.search:focus-within { border-color: var(--accent); }
.search svg { color: var(--ink-4); flex-shrink: 0; }
.search input { border: none; outline: none; background: none; font-family: inherit; font-size: 0.86rem; width: 100%; color: var(--ink); }
.search input::placeholder { color: var(--ink-4); }

/* 카테고리 필터 행 */
.cats { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }
.cat {
  padding: 5px 12px; border-radius: 99px; font-size: 0.82rem; font-weight: 600;
  background: var(--surface); border: 1px solid var(--border); color: var(--ink-3);
  transition: all var(--t-fast);
}
.cat:hover { border-color: var(--border-strong); color: var(--ink); }
.cat.on { background: var(--accent); color: #fff; border-color: var(--accent); }
[data-theme="medium"] .cat.on, [data-theme="dark"] .cat.on { color: #1A1714; }

/* ============================================================
   스레드 행 — Reddit식 (좌측 투표 + 콘텐츠)
============================================================ */
.threads { display: flex; flex-direction: column; gap: 8px; }
.thread {
  display: flex; background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; overflow: hidden;
  transition: border-color var(--t-fast);
}
.thread:hover { border-color: var(--border-strong); }

/* 좌측 투표 컬럼 */
.vote {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: 12px 8px; background: var(--bg-soft); min-width: 48px;
}
.vote button { border: none; background: none; color: var(--ink-4); padding: 2px; border-radius: 4px; line-height: 0; transition: color var(--t-fast), background var(--t-fast); }
.vote button:hover { background: var(--surface-2); }
.vote button.up:hover, .vote button.up.on { color: var(--upvote); }
.vote button.down:hover, .vote button.down.on { color: #6B8FD9; }
.vote .score { font-size: 0.82rem; font-weight: 800; color: var(--ink-2); }

/* 콘텐츠 영역 */
.thread-body { flex: 1; min-width: 0; padding: 12px 16px; cursor: pointer; }
.thread-line1 { display: flex; align-items: center; gap: 7px; font-size: 0.76rem; color: var(--ink-4); margin-bottom: 5px; }
.thread-cat { color: var(--accent); font-weight: 700; }
.thread-line1 .dot { width: 2px; height: 2px; border-radius: 50%; background: var(--ink-4); }
.thread-body h3 { font-size: 1.05rem; font-weight: 700; color: var(--ink); line-height: 1.35; margin-bottom: 5px; letter-spacing: -0.01em; }
.thread:hover h3 { color: var(--accent); }
.thread-ex { font-size: 0.88rem; color: var(--ink-3); line-height: 1.5; margin-bottom: 9px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.thread-foot { display: flex; align-items: center; gap: 14px; font-size: 0.78rem; color: var(--ink-4); font-weight: 600; }
.thread-foot .ico { display: inline-flex; align-items: center; gap: 5px; }

.empty { text-align: center; padding: 60px; color: var(--ink-4); background: var(--surface); border: 1px solid var(--border); border-radius: 10px; }

/* ============================================================
   사이드바 카드
============================================================ */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: 16px;
}
.card h4 { font-size: 0.78rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-3); margin-bottom: 12px; }
.card p { font-size: 0.86rem; color: var(--ink-2); line-height: 1.6; }
.card .go { width: 100%; justify-content: center; margin-top: 12px; }

.tag-list { display: flex; flex-wrap: wrap; gap: 6px; }
.tag-list a { padding: 4px 10px; border-radius: 99px; background: var(--bg-soft); font-size: 0.8rem; font-weight: 600; color: var(--ink-2); transition: background var(--t-fast); }
.tag-list a:hover { background: var(--accent-soft); color: var(--accent); }

.stat-row { display: flex; justify-content: space-between; padding: 7px 0; border-bottom: 1px solid var(--border); font-size: 0.86rem; }
.stat-row:last-child { border-bottom: none; }
.stat-row .k { color: var(--ink-3); }
.stat-row .v { font-weight: 800; color: var(--ink); }

/* ============================================================
   랜딩(소개) — 콘텐츠 중심으로 간결하게
============================================================ */
.hero { background: var(--surface); border-bottom: 1px solid var(--border); }
.hero-in { max-width: 1200px; margin: 0 auto; padding: 64px 16px; }
.hero h1 { font-size: clamp(2rem, 4.5vw, 3.2rem); font-weight: 800; letter-spacing: -0.03em; line-height: 1.12; margin-bottom: 18px; }
.hero h1 .ac { color: var(--accent); }
.hero p { font-size: 1.1rem; color: var(--ink-2); max-width: 54ch; margin-bottom: 28px; line-height: 1.6; }
.hero-cta { display: flex; gap: 10px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 7px; padding: 11px 22px; border-radius: 9px; font-weight: 700; font-size: 0.94rem; border: none; transition: opacity var(--t-fast), background var(--t-fast); }
.btn-fill { background: var(--accent); color: #fff; }
[data-theme="medium"] .btn-fill, [data-theme="dark"] .btn-fill { color: #1A1714; }
.btn-fill:hover { opacity: 0.88; }
.btn-line { background: transparent; color: var(--ink); border: 1px solid var(--border-strong); }
.btn-line:hover { background: var(--surface-2); }

.feat-sec { max-width: 1200px; margin: 0 auto; padding: 56px 16px; }
.feat-sec h2 { font-size: 1.6rem; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 6px; }
.feat-sec .sub { color: var(--ink-3); margin-bottom: 28px; }
.feat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px,1fr)); gap: 12px; }
.feat { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 20px; }
.feat .n { font-size: 0.82rem; font-weight: 800; color: var(--accent); margin-bottom: 10px; }
.feat h3 { font-size: 1.02rem; font-weight: 700; margin-bottom: 7px; }
.feat p { font-size: 0.88rem; color: var(--ink-3); line-height: 1.55; }

/* ============================================================
   스레드 상세
============================================================ */
.detail { max-width: 860px; margin: 0 auto; padding: 16px; }
.back { display: inline-flex; align-items: center; gap: 6px; color: var(--ink-3); font-size: 0.86rem; font-weight: 600; margin-bottom: 14px; }
.back:hover { color: var(--accent); }

.post {
  display: flex; background: var(--surface); border: 1px solid var(--border);
  border-radius: 12px; overflow: hidden; margin-bottom: 16px;
}
.post .vote { padding: 16px 10px; }
.post-body { flex: 1; min-width: 0; padding: 18px 22px; }
.post-meta { display: flex; align-items: center; gap: 8px; font-size: 0.8rem; color: var(--ink-4); margin-bottom: 12px; }
.post-cat { color: var(--accent); font-weight: 700; }
.post-body h1 { font-size: 1.5rem; font-weight: 800; letter-spacing: -0.02em; line-height: 1.3; margin-bottom: 14px; }
.av { width: 22px; height: 22px; border-radius: 50%; background: var(--surface-2); color: var(--ink-2); display: inline-flex; align-items: center; justify-content: center; font-size: 0.72rem; font-weight: 700; }
.who { color: var(--ink-2); font-weight: 700; }
.prose { font-size: 0.96rem; color: var(--ink-2); line-height: 1.7; }
.prose p { margin-bottom: 12px; }
.post-tools { display: flex; gap: 6px; margin-top: 16px; }
.tool {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 13px; border-radius: 8px; font-size: 0.82rem; font-weight: 700;
  background: var(--bg-soft); border: none; color: var(--ink-3); transition: background var(--t-fast), color var(--t-fast);
}
.tool:hover { background: var(--surface-2); color: var(--ink); }
.tool.primary { background: var(--accent); color: #fff; }
[data-theme="medium"] .tool.primary, [data-theme="dark"] .tool.primary { color: #1A1714; }
.tool.primary:hover { opacity: 0.88; }

.replies-head { font-size: 0.9rem; font-weight: 800; color: var(--ink-2); margin: 8px 0 12px; }

/* 답노트 — Reddit식 트리 */
.reply { display: flex; gap: 10px; padding: 12px 0; }
.reply-rail { display: flex; flex-direction: column; align-items: center; flex-shrink: 0; }
.reply-rail .av { margin-bottom: 4px; }
.reply-rail .thread-line-v { flex: 1; width: 2px; background: var(--border); margin-top: 4px; border-radius: 2px; }
.reply-main { flex: 1; min-width: 0; }
.reply-meta { display: flex; align-items: center; gap: 7px; font-size: 0.8rem; color: var(--ink-4); margin-bottom: 5px; }
.reply-main h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 6px; }
.reply-main .prose { font-size: 0.9rem; }
.reply-tools { display: flex; gap: 4px; margin-top: 8px; }
.reply-tools .tool { padding: 5px 10px; font-size: 0.78rem; background: transparent; }
.reply-tools .tool:hover { background: var(--surface-2); }
.reply-vote { display: inline-flex; align-items: center; gap: 4px; font-size: 0.8rem; font-weight: 700; color: var(--ink-3); }
.reply-vote button { border: none; background: none; color: var(--ink-4); padding: 1px; line-height: 0; border-radius: 3px; }
.reply-vote button:hover { color: var(--upvote); }

/* 트리 들여쓰기 */
.kids { margin-left: 18px; padding-left: 4px; border-left: 2px solid var(--border); }
.collapse-btn { cursor: pointer; color: var(--ink-4); font-size: 0.78rem; user-select: none; }
.collapse-btn:hover { color: var(--accent); }

/* ============================================================
   푸터
============================================================ */
.ftr { border-top: 1px solid var(--border); margin-top: 32px; padding: 28px 16px; background: var(--surface); }
.ftr-in { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.82rem; color: var(--ink-4); }
.ftr-links { display: flex; gap: 18px; }
.ftr-links a:hover { color: var(--accent); }

/* ============================================================
   반응형 — 사이드바 숨김
============================================================ */
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .rail { display: none; }
}
@media (max-width: 600px) {
  .hdr-in { padding: 0 10px; gap: 4px; }
  .brand span { display: none; }
  .nav a { padding: 6px 9px; font-size: 0.84rem; }
  .layout { padding: 10px; }
  .search { min-width: 0; flex: 1; }
  .vote { min-width: 40px; padding: 10px 5px; }
  .hero-in { padding: 40px 14px; }
}

.reply-highlight { animation: replyHl 2.4s ease; }
@keyframes replyHl {
  0%, 100% { background: transparent; }
  15%, 60% { background: rgba(154,111,9,0.14); }
}