/* ============================================================
   SOCIARO AILAB — shared site styles (simple)
   Nav, footer, buttons, section primitives, typography utilities.
   Page-specific layouts live inline in each .html.
   ============================================================ */

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
img { max-width: 100%; height: auto; display: block; }

.wrap { max-width: 1100px; margin: 0 auto; padding: 0 clamp(20px, 4vw, 56px); }

/* ── NAV ── */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(245, 239, 226, 0.92);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--rule-2);
}
.nav-inner {
  display: flex; align-items: center; gap: 24px;
  padding: 14px clamp(20px, 4vw, 56px);
  max-width: 1100px; margin: 0 auto;
}
.nav__brand {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--ink);
}
.nav__brand img { height: 22px; width: auto; display: block; }
.nav__brand sup {
  font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-3);
  vertical-align: 0; font-weight: 400; line-height: 1;
}
.nav__links {
  display: flex; gap: 22px; margin-left: auto;
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.04em; color: var(--ink-2);
}
.nav__links a { padding: 4px 0; border-bottom: 1px solid transparent; transition: color .15s var(--ease), border-color .15s var(--ease); }
.nav__links a:hover,
.nav__links a[aria-current="page"] { color: var(--accent); border-bottom-color: var(--accent); }
.nav__cta { display: none; }
@media (min-width: 760px) { .nav__cta { display: inline-flex; } }
@media (max-width: 640px) {
  .nav__links { gap: 14px; font-size: 11px; }
  .nav__brand sup { display: none; }
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--sans); font-size: 14.5px; font-weight: 500;
  letter-spacing: -0.005em; line-height: 1.2;
  padding: 12px 22px;
  border: 1px solid var(--accent); background: var(--accent); color: var(--accent-ink);
  cursor: pointer;
  transition: background .15s var(--ease), border-color .15s var(--ease), transform .15s var(--ease);
}
.btn:hover { background: var(--accent-2); border-color: var(--accent-2); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.btn--ghost {
  background: transparent; color: var(--accent); border-color: var(--accent);
}
.btn--ghost:hover { background: var(--accent); color: var(--accent-ink); }
.btn--mini { padding: 10px 18px; font-size: 13.5px; }
.btn .arrow { transition: transform .2s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

.ctas { display: flex; gap: 12px; flex-wrap: wrap; }

/* ── SECTION PRIMITIVES ── */
section { padding: clamp(40px, 5vw, 72px) 0; border-bottom: 1px solid var(--rule-2); }
section:last-of-type { border-bottom: 0; }
.eyebrow {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--accent);
  margin-bottom: 16px;
}
.section-t {
  font-family: var(--display); font-weight: 400;
  font-size: clamp(28px, 3.4vw, 42px); line-height: 1.1; letter-spacing: -0.025em;
  color: var(--ink); margin: 0 0 14px;
  text-wrap: balance; max-width: 24ch;
}
.section-t em { font-style: italic; color: var(--accent); }
.section-l {
  font-family: var(--sans); font-size: clamp(16px, 1.3vw, 17.5px); line-height: 1.55;
  color: var(--ink-2); max-width: 62ch; margin: 0 0 24px;
  text-wrap: pretty;
}
.section-l em { font-style: italic; color: var(--accent-3); }

/* ── PAGE HERO (subpage-specific layout uses .page-hero) ── */
.page-hero {
  padding: clamp(36px, 4.5vw, 64px) 0 clamp(32px, 4vw, 56px);
  border-bottom: 1px solid var(--rule-2);
}
.page-hero__eye {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--accent);
  margin-bottom: 18px;
}
.page-hero__t {
  font-family: var(--display); font-weight: 400;
  font-size: clamp(34px, 4.6vw, 64px); line-height: 1.04; letter-spacing: -0.03em;
  color: var(--ink); margin: 0 0 20px;
  text-wrap: balance; max-width: 22ch;
}
.page-hero__t em { font-style: italic; color: var(--accent); }
.page-hero__l {
  font-family: var(--sans); font-size: clamp(16px, 1.4vw, 18px); line-height: 1.55;
  color: var(--ink-2); max-width: 62ch; margin: 0 0 24px;
  text-wrap: pretty;
}
.page-hero__l b { color: var(--ink); font-weight: 500; }

/* ── FOOTER ── */
.footer {
  border-top: 1px solid var(--rule-2);
  padding: 24px 0 28px;
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.06em;
  color: var(--ink-3);
}
.footer-inner {
  max-width: 1100px; margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 56px);
  display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap;
}
.footer__brand {
  display: inline-flex; align-items: center; vertical-align: middle;
}
.footer__brand img { height: 18px; width: auto; display: block; }
.footer .dot { color: var(--ink-5); margin: 0 12px; }
.footer a { color: var(--accent); }
.footer a:hover { color: var(--accent-2); }
.footer__legal { color: var(--ink-4); }

/* ── BACK LINK (subpage → home) ── */
.back-link {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--ink-3);
  border-bottom: 1px solid var(--ink-5); padding-bottom: 3px;
  transition: color .15s var(--ease), border-color .15s var(--ease);
}
.back-link:hover { color: var(--accent); border-bottom-color: var(--accent); }