/* gugudan.app — minimal static site. No external fonts, no JS, no trackers. */

:root {
  --ink: #1d2330;
  --ink-soft: #4a5568;
  --bg: #ffffff;
  --bg-soft: #f5f7fb;
  --accent: #3056d3;
  --accent-ink: #ffffff;
  --line: #e2e8f0;
  --warn-bg: #fff8e6;
  --warn-line: #f0d28a;
  --maxw: 44rem;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial,
    "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
}

a { color: var(--accent); }
a:focus-visible,
button:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 0.5rem 0.875rem;
  border-radius: 0 0 0.5rem 0;
}
.skip-link:focus { left: 0; }

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
  gap: 1rem;
  flex-wrap: wrap;
}
.brand {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--ink);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.brand .mark { width: 1.15em; height: 1.15em; flex: none; }
.site-nav { display: flex; align-items: center; flex-wrap: wrap; }
.site-nav a {
  margin-left: 1rem;
  text-decoration: none;
  color: var(--ink-soft);
}
.site-nav a:hover { color: var(--accent); text-decoration: underline; }
.site-nav a.lang {
  font-weight: 600;
  color: var(--accent);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.15rem 0.7rem;
}

/* Bilingual entry (root) */
.chooser {
  min-height: 78vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem 1.25rem 3rem;
}
.chooser .brand { font-size: 2rem; margin-bottom: 0.5rem; }
.chooser .tagline { color: var(--ink-soft); margin: 0 0 0.35rem; }
.chooser .tagline[lang="ko"] { margin-bottom: 1.75rem; }
.lang-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  width: 100%;
  max-width: 30rem;
}
.lang-card {
  display: block;
  text-decoration: none;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  padding: 1.25rem 1rem;
  color: var(--ink);
}
.lang-card:hover { border-color: var(--accent); }
.lang-card .lc-name { display: block; font-size: 1.2rem; font-weight: 700; color: var(--accent); }
.lang-card .lc-sub { display: block; color: var(--ink-soft); font-size: 0.95rem; margin-top: 0.15rem; }

/* Hero */
.hero {
  background: var(--bg-soft);
  padding: 3rem 0 2.5rem;
  text-align: center;
}
.hero h1 {
  font-size: 2rem;
  margin: 0 0 0.5rem;
  line-height: 1.2;
}
.hero .lede {
  font-size: 1.2rem;
  color: var(--ink-soft);
  margin: 0 auto;
  max-width: 36rem;
}

/* Sections */
main { padding: 2.5rem 0 1rem; }
section { margin-bottom: 2.5rem; }
h2 { font-size: 1.4rem; margin: 0 0 0.75rem; }
h3 { font-size: 1.1rem; margin: 1.5rem 0 0.5rem; }

.features {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1rem;
}
.features li {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  padding: 1rem 1.125rem;
}
.features strong { display: block; margin-bottom: 0.15rem; }

.card {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  padding: 1.25rem 1.375rem;
}

.contact-line { font-size: 1.05rem; }

/* Draft / legal notice */
.notice {
  background: var(--warn-bg);
  border: 1px solid var(--warn-line);
  border-radius: 0.6rem;
  padding: 0.875rem 1.125rem;
  margin: 0 0 2rem;
  font-size: 0.95rem;
  color: var(--ink-soft);
}
.notice strong { color: var(--ink); }
/* lighter, "operating — written sign-off pending" variant (KO PIPA) vs the amber draft (EN COPPA) */
.notice.light { background: #eef4ff; border-color: #bcd0f5; }

.tbd {
  background: #fbeaea;
  border-radius: 0.25rem;
  padding: 0 0.3rem;
  font-size: 0.9em;
  color: #9b2c2c;
}

.confirm-note {
  font-size: 0.9rem;
  color: var(--ink-soft);
  background: var(--bg-soft);
  border-left: 3px solid var(--warn-line);
  padding: 0.5rem 0.85rem;
  margin: 0.75rem 0;
}

/* Legal document layout */
.legal h1 { font-size: 1.8rem; margin: 0 0 0.25rem; }
.legal .meta { color: var(--ink-soft); margin: 0 0 2rem; font-size: 0.95rem; }
.legal table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.95rem;
}
.legal th,
.legal td {
  border: 1px solid var(--line);
  padding: 0.6rem 0.7rem;
  text-align: left;
  vertical-align: top;
}
.legal th { background: var(--bg-soft); }
.legal ul { padding-left: 1.25rem; }
.legal li { margin-bottom: 0.35rem; }

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

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 2rem;
  padding: 1.5rem 0 2.5rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
}
.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.site-footer nav a { margin-left: 1rem; color: var(--ink-soft); }
.site-footer nav a:first-child { margin-left: 0; }

@media (max-width: 32rem) {
  .hero h1 { font-size: 1.65rem; }
  .hero .lede { font-size: 1.1rem; }
  .lang-cards { grid-template-columns: 1fr; }
  .site-footer .wrap { flex-direction: column; align-items: flex-start; }
  .site-footer nav a { margin-left: 0; margin-right: 1rem; }
}