/* 시안(Analytics Dashboard)의 양식 — 좌측 사이드바, 흰 카드 격자, 파란 강조색. 외부 폰트·CDN을 쓰지 않는다. */

:root {
  --page: #f6f7f9;
  --surface: #ffffff;
  --line: #eceef2;
  --ink: #111827;
  --ink-2: #4b5563;
  --muted: #9aa1ac;
  --accent: #2f6bff;
  --accent-soft: #e9f0ff;
  --good: #16c784;
  --warn: #f97316;
  --bad: #ef4444;
  --radius: 16px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.04), 0 8px 24px rgba(16, 24, 40, 0.04);
  --sidebar-width: 248px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Malgun Gothic", "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

/* ---------- 레이아웃 ---------- */

.app { display: flex; min-height: 100vh; }

.sidebar {
  position: sticky;
  top: 0;
  align-self: flex-start;
  width: var(--sidebar-width);
  height: 100vh;
  flex: 0 0 var(--sidebar-width);
  background: var(--surface);
  border-right: 1px solid var(--line);
  padding: 28px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.brand { padding: 0 12px 28px; }
.brand-mark { font-size: 15px; font-weight: 700; letter-spacing: 0.22em; color: var(--accent); }
.brand-sub { font-size: 12px; color: var(--muted); letter-spacing: 0.02em; margin-top: 4px; }

.nav-group { font-size: 13px; font-weight: 700; color: var(--muted); padding: 18px 12px 8px; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 12px;
  border-radius: 12px;
  color: var(--ink-2);
  text-decoration: none;
  font-size: 15px;
  transition: background 0.15s ease, color 0.15s ease;
}
.nav-item:hover { background: #f3f5f8; }
.nav-item .dot {
  width: 18px; height: 18px; border-radius: 5px;
  background: #d7dbe2; flex: 0 0 18px;
  transition: background 0.15s ease;
}
.nav-item.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.nav-item.active .dot { background: var(--accent); }

.main { flex: 1; min-width: 0; padding: 28px 36px 80px; }

.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 28px;
}
.topbar h1 { font-size: 26px; margin: 0; letter-spacing: -0.01em; }
.topbar .lede-en { margin: 6px 0 0; font-size: 14px; color: var(--ink-2); max-width: 72ch; }
.topbar-side { display: flex; flex-direction: column; align-items: flex-end; gap: 8px; flex: 0 0 auto; }
.topbar .meta { font-size: 13px; color: var(--muted); white-space: nowrap; }
.repo-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 14px;
  white-space: nowrap;
}
.repo-link:hover { background: var(--accent-soft); }

@media (max-width: 860px) {
  .topbar { flex-direction: column; }
  .topbar-side { align-items: flex-start; }
}

/* 링크 미리보기 캡처 전용 — 평소 화면에는 적용되지 않는다 */
.preview-mode .glossary,
.preview-mode #overview .section-head { display: none; }
.preview-mode #overview-cards { margin-top: 0 !important; }

/* ---------- 구역 ---------- */

.section { scroll-margin-top: 24px; padding: 10px 0 42px; }
.section-head { margin-bottom: 16px; }
.section-head h2 { font-size: 20px; margin: 0 0 6px; letter-spacing: -0.01em; }
.section-head p { margin: 0; color: var(--ink-2); font-size: 14px; max-width: 78ch; }

.grid { display: grid; gap: 16px; }
.grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid.split { grid-template-columns: minmax(0, 320px) minmax(0, 1fr); }

@media (max-width: 1180px) {
  .grid.cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid.cols-3, .grid.split { grid-template-columns: minmax(0, 1fr); }
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}
.card h3 { margin: 0 0 14px; font-size: 15px; color: var(--ink-2); font-weight: 600; }
.card .note { margin: 14px 0 0; font-size: 12.5px; color: var(--muted); }

.metric .label { font-size: 13.5px; color: var(--ink-2); }
.metric .value { font-size: 30px; font-weight: 700; letter-spacing: -0.02em; margin-top: 6px; }
.metric .value small { font-size: 16px; font-weight: 600; color: var(--muted); }
.metric .sub { font-size: 12.5px; color: var(--muted); margin-top: 6px; }

.glossary dl { margin: 0; display: grid; gap: 14px 28px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.glossary dt { font-size: 13.5px; font-weight: 600; color: var(--ink); }
.glossary dd { margin: 3px 0 0; font-size: 13px; color: var(--ink-2); line-height: 1.6; }

.figure img { width: 100%; height: auto; display: block; border-radius: 12px; }

/* ---------- 표 ---------- */

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 10px 8px; text-align: right; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { font-size: 12.5px; color: var(--muted); font-weight: 600; }
th:first-child, td:first-child { text-align: left; white-space: normal; }
tbody tr:last-child td { border-bottom: none; }
td .cell-note { display: block; margin-top: 5px; font-size: 12.5px; color: var(--muted);
                font-weight: 400; line-height: 1.55; white-space: normal; }
th:not(:first-child), td:not(:first-child) { vertical-align: top; }
td.pos { color: var(--good); font-weight: 600; }
td.neg { color: var(--bad); font-weight: 600; }

.scroll-x { overflow-x: auto; }

/* ---------- 막대 ---------- */

.bar-row { display: grid; grid-template-columns: minmax(0, 1fr) 96px; align-items: center; gap: 14px; margin-bottom: 12px; }
.bar-row .name { font-size: 13.5px; color: var(--ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-row .value { text-align: right; font-size: 13.5px; color: var(--ink-2); }
.bar-track { height: 8px; border-radius: 999px; background: #eef1f6; overflow: hidden; margin-top: 6px; }
.bar-fill { height: 100%; border-radius: 999px; background: linear-gradient(90deg, #2f6bff, #6ea2ff); }
.bar-fill.warm { background: linear-gradient(90deg, var(--warn), var(--bad)); }
.bar-fill.cool { background: linear-gradient(90deg, #12b981, #6ee7b7); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.chip {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 14px;
  font-size: 13px;
  color: var(--ink-2);
}
.chip b { color: var(--ink); font-weight: 600; }

/* ---------- 계산기 ---------- */

.control { margin-bottom: 18px; }
.control label { display: flex; justify-content: space-between; font-size: 13.5px; color: var(--ink-2); margin-bottom: 8px; }
.control label b { color: var(--ink); font-variant-numeric: tabular-nums; }
.control input[type="range"] { width: 100%; accent-color: var(--accent); }
.control .hint { font-size: 12.5px; color: var(--muted); margin-top: 6px; }

.verdict { display: flex; align-items: center; gap: 8px; font-size: 13.5px; }
.verdict .pill { border-radius: 999px; padding: 2px 10px; font-size: 12.5px; font-weight: 600; }
.pill.ok { background: #e7f8f1; color: #0f9d6e; }
.pill.no { background: #fdecec; color: #d93a3a; }

footer.page-note {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--muted);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}