/* =========================================================
   Components — nav, pills, cards, section labels, chips
   ========================================================= */

/* ---------- Home site header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(244, 241, 234, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.site-header__inner {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 18px var(--gutter);
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
}
.site-brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 15.5px; letter-spacing: -0.01em;
}
.site-brand__dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent);
}
.site-nav {
  display: flex; align-items: center; gap: 32px;
}
.site-nav__link {
  font-family: var(--font-accent);
  font-size: 12px; letter-spacing: 0.04em;
  color: var(--ink-muted);
  transition: color 0.18s;
}
.site-nav__link:hover { color: var(--ink); }

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  width: 40px; height: 40px;
  align-items: center; justify-content: center;
  cursor: pointer;
  color: var(--ink);
  font-size: 17px;
  padding: 0;
}
.mobile-dropdown {
  display: none;
  flex-direction: column;
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 18px 24px 24px;
}
.mobile-dropdown.is-open { display: flex; }
.mobile-dropdown__link {
  padding: 14px 4px;
  font-family: var(--font-accent);
  font-size: 14px;
  color: var(--ink-secondary);
  border-bottom: 1px solid var(--border);
}
.mobile-dropdown__cta {
  margin-top: 16px;
  justify-content: center;
  padding: 12px 16px;
}

/* Case-study inner nav (back link) */
.study-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(244, 241, 234, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.study-header__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 16px var(--gutter);
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
}
.study-header__back {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-accent);
  font-size: 13px;
  color: var(--ink-muted);
  transition: color 0.18s;
}
.study-header__back:hover { color: var(--ink); }
.study-header__title {
  font-family: var(--font-accent);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* ---------- Pills / CTAs ---------- */
.cta-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--ink);
  color: var(--bg);
  font-family: var(--font-accent);
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 10px 18px 10px 20px;
  border-radius: var(--radius-pill);
  transition: background 0.18s;
  border: none;
  cursor: pointer;
}
.cta-pill:hover { background: var(--accent); }
.cta-pill__arrow {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px;
  transition: background 0.18s, color 0.18s;
}
.cta-pill:hover .cta-pill__arrow { background: #fff; color: var(--accent); }

.cta-pill--sm { padding: 8px 14px 8px 16px; font-size: 12px; }
.cta-pill--sm .cta-pill__arrow { width: 24px; height: 24px; font-size: 12px; }

.cta-pill--lg { font-size: 15px; padding: 14px 24px 14px 28px; }
.cta-pill--lg .cta-pill__arrow { width: 32px; height: 32px; font-size: 15px; }

/* External / ghost pill */
.ext-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--ink);
  font-family: var(--font-accent);
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 10px 18px 10px 20px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-strong);
  transition: border-color 0.18s, background 0.18s, color 0.18s;
}
.ext-pill:hover {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}
.ext-pill__arrow {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--bg-warm);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px;
  transition: background 0.18s, color 0.18s;
}
.ext-pill__arrow-inner {
  display: inline-block;
  transform: rotate(-45deg);
}
.ext-pill:hover .ext-pill__arrow { background: var(--accent); color: #fff; }

/* Round arrow button */
.arrow-btn {
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--ink);
  display: inline-flex;
  align-items: center; justify-content: center;
  font-size: 20px;
  color: var(--bg);
  flex: none;
  transform: rotate(-45deg);
  transition: background 0.18s, transform 0.22s;
}
a:hover .arrow-btn { background: var(--accent); transform: rotate(0deg); }

/* ---------- Cards ---------- */
.card { transition: transform 0.22s ease, box-shadow 0.22s ease; }
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 64px rgba(20, 16, 12, 0.13);
}

/* ---------- Section labels (case-study side rail) ---------- */
.section-label {
  font-family: var(--font-accent);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 700;
  padding-top: 6px;
  border-top: 2px solid var(--ink);
  display: inline-block;
}

/* ---------- Tag chips ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-accent);
  font-size: 11px;
  color: var(--ink-muted);
  background: var(--bg-warm);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 4px 12px;
  white-space: nowrap;
}
.chip--dark   { color: rgba(255,255,255,0.4); background: rgba(255,255,255,0.04); border-color: rgba(255,255,255,0.08); }
.chip--accent { color: var(--accent-warm); background: rgba(255,219,175,0.08); border-color: rgba(255,219,175,0.12); }
.chip--soft {
  background: var(--bg-alt); border-color: var(--border);
  color: var(--ink); font-size: 14px; font-weight: 600;
  padding: 9px 16px; border-radius: 30px;
}

/* Copy-email button (in contact section) */
.copy-btn {
  cursor: pointer;
  background: transparent;
  color: var(--dark-text-mute);
  border: 1px solid var(--dark-border-alt);
  font-family: var(--font-accent);
  font-size: 12px;
  padding: 14px 22px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
  transition: border-color 0.18s, color 0.18s;
}
.copy-btn:hover { border-color: #8C8476; color: var(--dark-text); }
.copy-btn--copied { color: var(--accent-warm); border-color: var(--accent); }

/* ---------- Contact section (shared across all pages) ---------- */
.contact {
  background: var(--dark-deep);
  color: var(--bg);
}
.contact__inner {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 96px var(--gutter) 72px;
}
.contact__eyebrow {
  font-family: var(--font-accent);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 28px;
}
.contact__title {
  margin: 0 0 20px;
  font-size: clamp(36px, 5.5vw, 76px);
  font-weight: 900;
  letter-spacing: -0.035em;
  line-height: 0.95;
  max-width: 16ch;
}
.contact__lede {
  margin: 0 0 44px;
  font-size: 17px;
  line-height: 1.6;
  color: #C8C0B2;
  max-width: 52ch;
}
.contact__actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.contact__social {
  border-color: var(--dark-border-alt);
  color: #C8C0B2;
  font-size: 13px;
}
.contact__social .ext-pill__arrow {
  background: #2A2520;
  width: 28px; height: 28px;
}

.footer-bar { border-top: 1px solid #2A251F; }
.footer-row {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 24px var(--gutter);
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
  font-family: var(--font-accent);
  font-size: 12px;
  color: var(--ink-secondary);
}

@media (max-width: 900px) {
  .contact__inner { padding-left: 24px; padding-right: 24px; padding-top: 64px; }
}
@media (max-width: 640px) {
  .contact__inner { padding-left: 18px; padding-right: 18px; padding-top: 48px; }
  .footer-row { padding-left: 18px; padding-right: 18px; }
}

/* ---------- Responsive: header ---------- */
@media (max-width: 900px) {
  .site-header__inner { padding-left: 24px; padding-right: 24px; }
  .site-nav { display: none; }
  .nav-toggle { display: flex; }
  .study-header__inner { padding-left: 24px; padding-right: 24px; }
}
@media (max-width: 640px) {
  .site-header__inner { padding: 12px 18px; }
  .site-header__inner nav { gap: 14px; }
  .study-header__inner { padding: 12px 18px; flex-wrap: wrap; row-gap: 6px; }
}
@media (max-width: 420px) {
  .site-header__inner { flex-wrap: wrap; row-gap: 8px; }
  .study-header__inner { flex-wrap: wrap; row-gap: 6px; }
}