/* Polypage website - shared styles. No external fonts or scripts (privacy). */
:root {
  --paper: #faf8f5;
  --paper-raised: #ffffff;
  --ink: #1f2420;
  --ink-soft: #55584f;
  --ink-faint: #8a8c80;
  --rule: #ddd8cd;
  --accent: #2456d9;
  --accent-soft: #eef1fb;
  --accent-ink: #1a3ea8;
  --radius: 12px;
  --max: 1040px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #16181b;
    --paper-raised: #1e2124;
    --ink: #e9e7e0;
    --ink-soft: #a9ab9f;
    --ink-faint: #6f7268;
    --rule: #33362f;
    --accent: #6d92ff;
    --accent-soft: #212a42;
    --accent-ink: #a9bdff;
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Apple SD Gothic Neo",
    "Noto Sans KR", "Hiragino Sans", sans-serif;
  font-size: 16px;
  line-height: 1.65;
}

a {
  color: var(--accent);
  text-underline-offset: 2px;
}

a:hover {
  color: var(--accent-ink);
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---- header / nav ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 60px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  font-size: 18px;
}

.brand img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
}

.site-nav {
  display: flex;
  gap: 18px;
  margin-left: auto;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 15px;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--ink);
}

/* ---- buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 999px;
  border: 1px solid var(--rule);
  background: var(--paper-raised);
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  color: #fff;
  filter: brightness(1.08);
}

.btn[aria-disabled="true"] {
  opacity: 0.6;
  pointer-events: none;
}

/* ---- hero ---- */
.hero {
  padding: 72px 0 48px;
  text-align: center;
}

.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(32px, 6vw, 52px);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.hero .lede {
  max-width: 680px;
  margin: 0 auto 28px;
  color: var(--ink-soft);
  font-size: 18px;
}

.hero .actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero .note {
  margin-top: 14px;
  color: var(--ink-faint);
  font-size: 14px;
}

/* ---- feature grid ---- */
.section {
  padding: 40px 0;
}

.section h2 {
  margin: 0 0 8px;
  font-size: 26px;
  letter-spacing: -0.01em;
}

.section .section-lede {
  margin: 0 0 24px;
  color: var(--ink-soft);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.card {
  padding: 20px 22px;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--paper-raised);
}

.card h3 {
  margin: 0 0 6px;
  font-size: 17px;
}

.card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 15px;
}

.badge {
  display: inline-block;
  margin-left: 6px;
  padding: 1px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-ink);
  font-size: 12px;
  font-weight: 600;
  vertical-align: 2px;
}

/* ---- long-form documents (manual / privacy / terms) ---- */
.doc {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 20px 72px;
}

.doc h1 {
  margin: 0 0 6px;
  font-size: 34px;
  letter-spacing: -0.01em;
}

.doc .meta {
  margin: 0 0 32px;
  color: var(--ink-faint);
  font-size: 14px;
}

/* 목차·#링크로 이동했을 때 상단 고정 메뉴에 제목이 가리지 않게. */
[id] {
  scroll-margin-top: 110px;
}

.doc h2 {
  margin: 40px 0 10px;
  font-size: 22px;
  padding-top: 8px;
  border-top: 1px solid var(--rule);
}

.doc h3 {
  margin: 24px 0 6px;
  font-size: 17px;
}

.doc ul,
.doc ol {
  padding-left: 22px;
}

.doc li + li {
  margin-top: 4px;
}

.doc table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  font-size: 15px;
}

.doc th,
.doc td {
  text-align: left;
  vertical-align: top;
  padding: 8px 10px;
  border-bottom: 1px solid var(--rule);
}

.doc th {
  color: var(--ink-soft);
  font-weight: 600;
}

.doc .summary {
  padding: 16px 20px;
  border-radius: var(--radius);
  background: var(--accent-soft);
  color: var(--ink);
}

.doc .summary ul {
  margin: 6px 0 0;
}

.doc code {
  padding: 1px 6px;
  border-radius: 4px;
  background: var(--accent-soft);
  font-size: 0.92em;
}

.toc {
  margin: 0 0 32px;
  padding: 14px 20px;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--paper-raised);
}

.toc ol {
  margin: 0;
}

/* ---- footer ---- */
.site-footer {
  border-top: 1px solid var(--rule);
  padding: 28px 0 40px;
  color: var(--ink-faint);
  font-size: 14px;
}

.site-footer .wrap {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: space-between;
}

.site-footer nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.site-footer a {
  color: var(--ink-soft);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--ink);
}

@media (max-width: 560px) {
  .site-nav {
    margin-left: 0;
    width: 100%;
    padding-bottom: 10px;
  }
  .hero {
    padding: 48px 0 32px;
  }
}