/* ChaTube — 챗머니 디자인 시스템 기반 (슬레이트 팔레트 + 유튜브 레드 포인트) */
:root {
  --bg:       #ffffff;
  --panel:    #f8fafc;
  --panel2:   #f1f5f9;
  --line:     #e2e8f0;
  --txt:      #0f172a;
  --muted:    #64748b;
  --accent:   #0f172a;
  --accent-fg:#ffffff;
  --yt:       #ff0033;   /* 유튜브 레드 포인트(브랜드·강조 최소 사용) */
  --ok:       #16a34a;
  --warn:     #d97706;
  --radius:   0.5rem;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--txt);
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont,
    "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 24px; font-weight: 800; letter-spacing: -0.02em; margin: 0; }
h2 { font-size: 18px; font-weight: 700; margin: 0; }
h3 { font-size: 15px; font-weight: 700; margin: 0; }

/* ── 상단바 ── */
.topbar {
  display: flex; align-items: center; gap: 24px;
  padding: 0 24px; height: 60px;
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 100;
}
.brand { display: flex; align-items: center; gap: 9px; }
.brand:hover { text-decoration: none; }
.brand-logo {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: 8px;
  background: var(--yt); color: #fff;
}
.brand-logo svg { width: 18px; height: 18px; }
.brand-name { font-size: 18px; font-weight: 800; color: var(--txt); letter-spacing: -0.03em; }
.brand-sub { font-size: 12px; color: var(--muted); font-weight: 500; }
.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }

.lang-toggle {
  display: inline-flex; border: 1px solid var(--line); border-radius: 999px; overflow: hidden;
}
.lang-toggle button {
  padding: 5px 12px; font-size: 12px; font-weight: 700; background: transparent;
  border: none; cursor: pointer; color: var(--muted); font-family: inherit;
}
.lang-toggle button.active { background: var(--accent); color: #fff; }
.auth-area { display: inline-flex; align-items: center; gap: 8px; }
.auth-name { font-size: 13px; font-weight: 600; color: var(--txt); display: inline-flex; align-items: center; max-width: 140px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* 인증 페이지(로그인/회원가입) */
.auth-wrap { max-width: 400px; margin: 40px auto; }
.auth-card { background: var(--bg); border: 1px solid var(--line); border-radius: 14px; padding: 28px; }
.auth-card h1 { font-size: 20px; margin-bottom: 18px; }
.auth-card label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 12px; color: var(--txt); }
.auth-card input { width: 100%; margin-top: 5px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; font-size: 14px; font-family: inherit; }
.auth-card input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(15,23,42,.06); }
.auth-card .btn { width: 100%; justify-content: center; margin-top: 6px; }
.auth-alt { text-align: center; margin-top: 16px; font-size: 13px; }
.auth-msg { margin-top: 12px; font-size: 13px; text-align: center; min-height: 18px; }

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: var(--radius);
  border: 1px solid var(--accent); background: var(--accent); color: var(--accent-fg);
  font-size: 14px; font-weight: 600; cursor: pointer; font-family: inherit;
  transition: opacity .15s;
}
.btn:hover { opacity: .88; text-decoration: none; }
.btn.outline { background: transparent; color: var(--txt); border-color: var(--line); }
.btn.outline:hover { border-color: var(--accent); background: var(--panel2); }
.btn.sm { padding: 5px 12px; font-size: 13px; }

.hamburger-btn {
  display: none; align-items: center; justify-content: center;
  width: 38px; height: 38px; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--bg); color: var(--txt); cursor: pointer;
}
.hamburger-btn:hover { background: var(--panel2); }

/* ── 레이아웃 ── */
.app-shell { display: flex; align-items: flex-start; }
.sidebar {
  width: 232px; flex-shrink: 0;
  border-right: 1px solid var(--line); background: var(--bg);
  position: sticky; top: 60px; height: calc(100vh - 60px);
  overflow-y: auto; padding: 18px 14px;
}
.sidenav { display: flex; flex-direction: column; gap: 2px; }
.sidenav-label {
  font-size: 11px; font-weight: 700; color: var(--muted);
  text-transform: uppercase; letter-spacing: .05em; padding: 14px 12px 6px;
}
.sidenav-label:first-child { padding-top: 4px; }
.sidenav a {
  display: flex; align-items: center; gap: 10px;
  font-size: 14px; color: var(--muted); padding: 9px 12px; border-radius: var(--radius);
  transition: color .15s, background .15s;
}
.sidenav a:hover { color: var(--txt); background: var(--panel2); text-decoration: none; }
.sidenav a.active { color: var(--txt); font-weight: 600; background: var(--panel2); }
.sidenav a.active .nav-icon svg { color: var(--yt); }
.nav-icon { display: inline-flex; align-items: center; justify-content: center; width: 18px; height: 18px; flex-shrink: 0; }
.nav-icon svg { width: 18px; height: 18px; display: block; color: currentColor; }
.sidenav-sep { height: 1px; background: var(--line); margin: 8px 6px; }
.nav-badge { margin-left: auto; font-size: 10px; font-weight: 800; letter-spacing: .03em;
  background: rgba(255,0,51,.1); color: var(--yt); padding: 1px 6px; border-radius: 999px; }
.sidenav a { position: relative; }

.container { flex: 1; min-width: 0; max-width: 1120px; margin: 0 auto; padding: 28px 28px 60px; width: 100%; }
.page-head { margin-bottom: 22px; }
.page-head p { margin: 6px 0 0; color: var(--muted); font-size: 14px; }
.muted { color: var(--muted); }

/* ── 카드 ── */
.card {
  background: var(--bg); border: 1px solid var(--line); border-radius: 12px;
  padding: 20px; margin-bottom: 16px;
}
.grid { display: grid; gap: 16px; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

/* KPI 카드 */
.kpi { display: flex; flex-direction: column; gap: 6px; }
.kpi .kpi-label { font-size: 13px; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.kpi .kpi-value { font-size: 26px; font-weight: 800; letter-spacing: -0.02em; }
.kpi .kpi-delta { font-size: 12px; font-weight: 600; }
.kpi .kpi-delta.up { color: var(--ok); }
.kpi .kpi-delta.down { color: var(--yt); }
.kpi-ic { width: 34px; height: 34px; border-radius: 9px; background: var(--panel2);
  display: inline-flex; align-items: center; justify-content: center; color: var(--accent); }
.kpi-ic svg { width: 18px; height: 18px; }

/* ── 테이블(랭킹) ── */
.rank-table { width: 100%; border-collapse: collapse; }
.rank-table th {
  text-align: left; font-size: 12px; font-weight: 700; color: var(--muted);
  padding: 10px 12px; border-bottom: 1px solid var(--line); white-space: nowrap;
}
.rank-table td { padding: 12px; border-bottom: 1px solid var(--line); font-size: 14px; vertical-align: middle; }
.rank-table tr:hover td { background: var(--panel); }
.rank-no { font-weight: 800; color: var(--muted); width: 30px; }
.rank-no.top { color: var(--yt); }
.ch-cell { display: flex; align-items: center; gap: 10px; }
.ch-avatar { width: 38px; height: 38px; border-radius: 999px; background: var(--panel2); flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center; color: var(--muted); font-weight: 800; }
.ch-name { font-weight: 700; }
.ch-meta { font-size: 12px; color: var(--muted); }
.num { font-variant-numeric: tabular-nums; }
.pill { display: inline-flex; align-items: center; gap: 4px; padding: 2px 9px; border-radius: 999px;
  font-size: 12px; font-weight: 700; background: var(--panel2); color: var(--muted); }
.pill.up { background: rgba(22,163,74,.12); color: var(--ok); }
.pill.hot { background: rgba(255,0,51,.1); color: var(--yt); }

/* 필터 바 */
.filterbar { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 16px; }
.chip { padding: 6px 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--bg);
  color: var(--muted); font-size: 13px; font-weight: 600; cursor: pointer; }
.chip:hover { border-color: var(--accent); color: var(--txt); }
.chip.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* 가이드 카드 */
.guide-card { display: flex; gap: 14px; }
.guide-ic { width: 42px; height: 42px; border-radius: 10px; flex-shrink: 0; background: var(--panel2);
  display: inline-flex; align-items: center; justify-content: center; color: var(--accent); }
.guide-ic svg { width: 22px; height: 22px; }
.guide-card h3 { margin-bottom: 4px; }
.guide-card p { margin: 0; font-size: 13px; color: var(--muted); line-height: 1.6; }
.badge { display: inline-block; font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 999px;
  background: var(--panel2); color: var(--muted); margin-left: 6px; }
.badge.free { background: rgba(22,163,74,.12); color: var(--ok); }
.badge.pro { background: rgba(255,0,51,.1); color: var(--yt); }

/* 사이드바 백드롭(모바일) */
.sidebar-backdrop { display: none; position: fixed; inset: 0; background: rgba(15,23,42,.45); z-index: 999; }
.sidebar-backdrop.open { display: block; }
.sidebar-mobile-header { display: none; }

@media (max-width: 860px) {
  .grid.cols-3, .grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .hamburger-btn { display: inline-flex; }
  .brand-sub { display: none; }
  .app-shell { flex-direction: column; }
  .sidebar {
    position: fixed; top: 0; bottom: 0; left: 0; width: 260px; max-width: 82vw; height: auto;
    transform: translateX(-100%); transition: transform .25s ease; z-index: 1000;
    box-shadow: 4px 0 24px rgba(15,23,42,.15); padding-top: 0;
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-mobile-header {
    display: flex; align-items: center; justify-content: space-between;
    height: 60px; padding: 0 14px; border-bottom: 1px solid var(--line);
  }
  .sidebar-close-btn { display: inline-flex; align-items: center; justify-content: center;
    width: 36px; height: 36px; border: none; background: transparent; border-radius: 8px; cursor: pointer; color: var(--muted); }
  .container { padding: 20px 16px 50px; }
  .grid.cols-2, .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr; }

  /* 데이터 표(.rank-table) → 모바일 카드형 전환 (finder·board 공용) */
  .rank-table { min-width: 0 !important; }
  .rank-table thead { display: none; }
  .rank-table tbody, .rank-table tr, .rank-table td { display: block; width: auto; }
  .rank-table tr {
    position: relative;
    border: 1px solid var(--line); border-radius: 12px;
    padding: 12px 14px; margin: 0 12px 10px; background: var(--panel);
  }
  .rank-table tbody tr:last-child { margin-bottom: 12px; }
  .rank-table td {
    border: none !important; padding: 6px 0 !important;
    text-align: right !important;
    display: flex; align-items: center; justify-content: space-between; gap: 12px;
    min-height: 0;
  }
  .rank-table td::before {
    content: attr(data-label);
    color: var(--muted); font-size: 12px; font-weight: 600; text-align: left; flex-shrink: 0;
  }
  /* 제목·채널(cell-primary)과 버튼·분류(cell-full)는 라벨 없이 전체폭 블록 */
  .rank-table td.cell-primary, .rank-table td.cell-full { display: block; text-align: left !important; }
  .rank-table td.cell-primary::before, .rank-table td.cell-full::before { content: none; }
  .rank-table td.cell-primary { padding: 2px 44px 6px 0 !important; }
  .rank-table td.cell-full { padding-top: 10px !important; }
  .rank-table td.cell-full .btn { width: 100%; }
  /* 순위 배지(finder) — 카드 우상단 */
  .rank-table td.rank-no {
    position: absolute; top: 12px; right: 14px; width: auto; padding: 0 !important;
    display: inline-block; font-weight: 800; color: var(--muted); font-size: 13px; background: none;
  }
  .rank-table td.rank-no::before { content: none; }
  .rank-table td .ch-cell { gap: 10px; }
}