/* Nhà Nuôi Sao. Plain CSS: no build step, no web fonts, no external requests. */

:root {
  --bg: #f7f4ee;
  --surface: #ffffff;
  --ink: #1b2430;
  --muted: #3e4b5c;
  --line: #e2d9c8;
  --night: #121a2b;
  --night-2: #1a2740;
  --on-night: #f6f1e8;
  --on-night-muted: #d9cbb6;
  --gold: #e2b15a;
  --gold-ink: #1b1408;
  --star: #f0d48a;
  --max: 1080px;
  --header-h: 72px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 1.05rem;
  line-height: 1.6;
}

img { display: block; max-width: 100%; }
h1, h2, h3, p { margin: 0; }
a { color: inherit; }

.container { width: min(100% - 2.5rem, var(--max)); margin-inline: auto; }
.narrow { max-width: 42rem; }

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 80;
  padding: 0.6rem 0.9rem;
  background: var(--surface);
  color: var(--ink);
  border-radius: 8px;
}
.skip-link:focus { top: 1rem; }

:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(18, 26, 43, 0.96);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--on-night);
  font-weight: 700;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.site-nav { display: flex; gap: 0.25rem; margin-left: auto; }
.site-nav a {
  color: var(--on-night-muted);
  text-decoration: none;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  font-weight: 550;
}
.site-nav a:hover { color: var(--on-night); background: rgba(255, 255, 255, 0.06); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.7rem 1.2rem;
  border-radius: 12px;
  border: 1px solid transparent;
  font: inherit;
  font-weight: 650;
  text-decoration: none;
}
.btn-primary { background: var(--gold); color: var(--gold-ink); }
.btn-primary:hover { background: var(--star); }
.btn-ghost { border-color: rgba(255, 255, 255, 0.28); color: var(--on-night); }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.08); }
.btn-compact { min-height: 40px; padding: 0.45rem 0.9rem; font-size: 0.95rem; }

.hero {
  background:
    radial-gradient(700px 380px at 90% -10%, rgba(226, 177, 90, 0.28), transparent 60%),
    linear-gradient(180deg, var(--night), var(--night-2));
  color: var(--on-night);
  padding: 4.5rem 0 4rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
  gap: 2.5rem;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  color: var(--star);
  font-size: 0.92rem;
  font-weight: 650;
}
.eyebrow span {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--star);
}

h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  font-weight: 750;
}
h1 > span { display: inline-block; }
@media (min-width: 861px) {
  .hero h1 > span { display: block; }
}

.lede, .section-lead { margin-top: 1rem; color: var(--on-night-muted); font-size: 1.12rem; max-width: 38rem; }
.section-lead { color: var(--muted); }

.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.6rem; }

.ceo {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(240, 212, 138, 0.35);
  border-radius: 20px;
  padding: 1.5rem 1.4rem 1.4rem;
}
.ceo .kicker { color: var(--star); }
.ceo h2 { margin-top: 0.35rem; font-size: 2.4rem; letter-spacing: -0.03em; }
.ceo .role { margin-top: 0.2rem; color: var(--on-night); font-weight: 650; }
.ceo .mail {
  display: inline-block;
  margin-top: 1rem;
  color: var(--star);
  font-weight: 700;
  text-underline-offset: 3px;
}
.ceo .place { margin-top: 0.45rem; color: var(--on-night-muted); }

section { padding: 4.2rem 0; }
h2 { margin-top: 0.35rem; font-size: clamp(1.8rem, 3vw, 2.5rem); letter-spacing: -0.03em; }
.kicker {
  color: #6a4e22;
  font-size: 0.82rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.kicker-light { color: var(--star); }

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.8rem;
}
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1.25rem 1.2rem 1.35rem;
}
.card h3 { font-size: 1.15rem; }
.card p { margin-top: 0.45rem; color: var(--muted); }

.band {
  background: var(--night);
  color: var(--on-night);
}
.band p { margin-top: 1rem; color: var(--on-night-muted); font-size: 1.08rem; }
.band h2 { color: var(--on-night); }

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.9fr);
  gap: 2rem;
  align-items: center;
}
.panel {
  display: grid;
  gap: 0.35rem;
  font-style: normal;
  background: var(--surface);
  border: 1px solid var(--line);
  border-top: 4px solid var(--gold);
  border-radius: 16px;
  padding: 1.4rem 1.3rem;
}
.panel strong { font-size: 1.45rem; }
.panel a { color: #6a4e22; font-weight: 750; }

.site-footer {
  background: var(--night);
  color: var(--on-night-muted);
  padding: 1.6rem 0 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-inner { display: flex; flex-wrap: wrap; gap: 0.4rem 1.4rem; justify-content: space-between; }
.footer-inner a { color: var(--star); }
.footer-inner strong { color: var(--on-night); }

.notfound {
  min-height: calc(100vh - var(--header-h));
  display: grid;
  place-items: center;
  text-align: center;
  padding: 3rem 0;
  background: linear-gradient(180deg, var(--night), var(--night-2));
  color: var(--on-night);
}
.notfound .code { color: var(--star); font-size: clamp(3.5rem, 12vw, 6rem); font-weight: 750; line-height: 1; }
.notfound h1 { margin-top: 0.4rem; }
.notfound .lede { margin-inline: auto; }
.notfound .actions { justify-content: center; }

@media (max-width: 860px) {
  :root { --header-h: 156px; }
  .header-inner { flex-wrap: wrap; padding-block: 0.7rem 0.85rem; }
  .brand { order: 1; }
  .site-nav { order: 2; flex-basis: 100%; margin-left: -0.4rem; flex-wrap: wrap; }
  .header-inner > .btn { order: 3; width: 100%; margin-left: 0; }
  .hero-grid, .cards, .contact-grid { grid-template-columns: minmax(0, 1fr); }
  .hero { padding-top: 2.6rem; }
}

@media (max-width: 620px) {
  .container { width: min(100% - 1.5rem, var(--max)); }
  .actions .btn { flex: 1 1 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

@media print {
  .site-header { display: none; }
  body { background: #fff; }
}