/* layout.css — header, footer, hero, section layout, grids */

.section { padding: 80px 32px; }
.section__inner { max-width: 1200px; margin: 0 auto; }
.section__title { font-size: clamp(1.8rem, 3.4vw, 2.6rem); margin: 0 0 14px; }
.section__lead { font-size: 1.1rem; color: var(--ink-soft); max-width: 640px; margin: 0 auto 48px; text-align: center; }
.section--center { text-align: center; }

.grid { display: grid; gap: 20px; }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.copy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

/* ---------- Header ---------- */
.site-header {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 50;
}
.site-header__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.01em;
}
.brand:hover { text-decoration: none; }
.brand__mark {
  width: 36px; height: 36px;
  background: var(--ink);
  color: #fff;
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
}
.primary-nav {
  display: flex;
  gap: 28px;
  font-size: 14px;
  font-weight: 500;
}
.primary-nav a { color: var(--ink-soft); }
.primary-nav a:hover { color: var(--ink); text-decoration: none; }

.nav-actions { display: flex; gap: 12px; align-items: center; }
.nav-secondary {
  color: var(--ink);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 16px;
}
.nav-cta {
  background: var(--ink);
  color: #fff;
  padding: 9px 18px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
}
.nav-cta:hover { background: var(--accent); text-decoration: none; color: #fff; }

.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  width: 40px;
  height: 40px;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  margin: 4px auto;
  transition: transform .2s ease, opacity .2s ease;
  border-radius: 2px;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  padding: 90px 32px 64px;
  background: var(--bg);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -200px; right: -200px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,102,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -200px; left: -200px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(0,102,255,0.05) 0%, transparent 70%);
  pointer-events: none;
}
.hero__inner {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero__inner--center {
  grid-template-columns: 1fr;
  text-align: center;
  max-width: 800px;
}
.hero__title {
  font-size: clamp(2.2rem, 4.4vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0 0 18px;
}
.hero__subtitle {
  font-size: 1.15rem;
  color: var(--ink-soft);
  margin: 0 0 28px;
  line-height: 1.6;
  max-width: 540px;
}
.hero__inner--center .hero__subtitle { margin-left: auto; margin-right: auto; }
.hero__ctas { display: flex; gap: 12px; flex-wrap: wrap; }
.hero__inner--center .hero__ctas { justify-content: center; }

.hero__visual {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-lg);
  position: relative;
  z-index: 1;
}
.hero__visual-title {
  font-size: .85rem;
  font-weight: 600;
  color: var(--mute);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.hero__visual-row {
  padding: 14px 16px;
  background: var(--line-soft);
  border-radius: var(--radius);
  margin-bottom: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .92rem;
}
.hero__visual-row:last-child { margin-bottom: 0; }
.hero__visual-row strong { font-weight: 600; }
.hero__visual-pill {
  font-size: .72rem;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--ok-soft);
  color: var(--ok);
  font-weight: 600;
}

.hero--inner { padding: 70px 32px; }
.hero--inner .hero__inner { grid-template-columns: 1fr; max-width: 820px; text-align: center; }
.hero--inner .hero__subtitle { margin-left: auto; margin-right: auto; }
.hero--inner .hero__ctas { justify-content: center; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--paper);
  border-top: 1px solid var(--line);
}
.site-footer__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 56px 32px 28px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
}
.site-footer h4 {
  color: var(--ink);
  font-size: .82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 16px;
  font-weight: 600;
}
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 8px; }
.site-footer a { color: var(--ink-soft); font-size: .92rem; }
.site-footer a:hover { color: var(--accent); text-decoration: none; }
.site-footer__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  color: var(--ink);
  font-weight: 700;
  font-size: 15px;
}
.site-footer__brand-col p { color: var(--ink-soft); line-height: 1.65; font-size: .92rem; }
.site-footer__bottom {
  border-top: 1px solid var(--line);
  padding: 18px 32px;
  text-align: center;
  color: var(--mute);
  font-size: .82rem;
}

/* ---------- Mobile ---------- */
@media (max-width: 960px) {
  .section { padding: 56px 20px; }
  .site-header__inner { padding: 12px 20px; }
  .copy-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero__inner { grid-template-columns: 1fr; gap: 40px; }
  .hero { padding: 56px 20px 48px; }
  .site-footer__inner { grid-template-columns: 1fr 1fr; padding: 40px 20px 24px; }
}
@media (max-width: 720px) {
  .nav-toggle { display: block; order: 3; }
  .nav-cta { order: 2; padding: 8px 14px; font-size: 13px; }
  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    background: var(--paper);
    padding: 12px 20px 20px;
    gap: 0;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s ease, transform .2s ease;
  }
  .primary-nav.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .primary-nav a { padding: 14px 0; border-bottom: 1px solid var(--line-soft); }
  .primary-nav a:last-child { border-bottom: 0; }
  .site-header__inner { flex-wrap: wrap; }
  .site-footer__inner { grid-template-columns: 1fr; }
}