/*
  파일: common/css/layout.css
  설명: 헤더 / 푸터 / 히어로 / 섹션 등 레이아웃 골격 스타일.
*/

/* ── 헤더 ───────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1020;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}
.site-header .navbar { padding-top: .75rem; padding-bottom: .75rem; }
.site-header .navbar-brand { color: var(--color-primary); font-size: 1.25rem; }
.site-header .nav-link { color: var(--color-text); font-weight: 500; }
.site-header .nav-link:hover { color: var(--color-primary); }

/* ── 히어로 ─────────────────────────────────────────── */
.hero {
  padding: var(--section-py) 0;
  background: var(--color-bg-soft);
}
.hero-eyebrow {
  color: var(--color-primary);
  font-weight: 700;
  letter-spacing: .04em;
  margin-bottom: .5rem;
}
.hero-title {
  font-size: clamp(1.9rem, 4vw, 3rem);
  font-weight: 900;
  margin-bottom: 1rem;
}
.hero-lead {
  color: var(--color-muted);
  font-size: 1.1rem;
  max-width: 38ch;
  margin-bottom: 1.75rem;
}
.hero-visual {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  background:
    radial-gradient(120% 120% at 100% 0%,
      color-mix(in srgb, var(--color-primary) 18%, transparent) 0%,
      transparent 60%),
    var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-visual-badge {
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: .5rem 1.25rem;
}

/* ── 섹션 ───────────────────────────────────────────── */
.section { padding: var(--section-py) 0; }
.section-soft { background: var(--color-bg-soft); }
.section-head { max-width: 56ch; margin: 0 auto 2.5rem; }
.section-eyebrow {
  color: var(--color-primary);
  font-weight: 700;
  letter-spacing: .08em;
  font-size: .85rem;
  margin-bottom: .5rem;
}
.section-title {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  margin-bottom: .75rem;
}
.section-lead { color: var(--color-muted); margin-bottom: 0; }

/* ── 푸터 ───────────────────────────────────────────── */
.site-footer {
  background: #0F172A;
  color: #CBD5E1;
  padding: 64px 0 32px;
}
.site-footer .footer-brand { color: #fff; font-size: 1.15rem; margin-bottom: .5rem; }
.site-footer .footer-tagline { color: #94A3B8; }
.site-footer .footer-heading { color: #fff; font-size: .95rem; font-weight: 700; margin-bottom: 1rem; }
.site-footer .footer-links a { color: #94A3B8; display: inline-block; padding: .2rem 0; }
.site-footer .footer-links a:hover { color: #fff; }
.site-footer .footer-divider { border-color: rgba(255,255,255,.1); margin: 2rem 0 1.25rem; }
.site-footer .footer-copy { color: #64748B; font-size: .85rem; }