/* ===========================================================
   Columbia Automation — page styles
   Composed from the WSC design-system tokens. Adapts the WSC
   website UI-kit layout patterns to a single-page services site.
   =========================================================== */
.site { min-height: 100%; background: var(--surface-page); }

/* ---- Nav --------------------------------------------------- */
.site-nav {
  position: sticky; top: 0; z-index: var(--z-sticky);
  background: color-mix(in srgb, var(--parchment-50) 82%, transparent);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-base) var(--ease-standard), background var(--dur-base) var(--ease-standard);
}
.site-nav.is-scrolled { border-bottom-color: var(--border-hairline); background: color-mix(in srgb, var(--parchment-50) 92%, transparent); }
.site-nav__inner {
  max-width: var(--container-xl); margin: 0 auto; padding: 14px var(--gutter);
  display: flex; align-items: center; gap: var(--space-6);
}
.site-brand { display: flex; align-items: baseline; gap: 2px; text-decoration: none; }
.site-brand__name { font-family: var(--font-serif); font-weight: 600; font-size: 17px; color: var(--text-strong); letter-spacing: -0.01em; }
.site-brand__co { color: var(--text-muted); font-weight: 500; }
.site-nav__links { display: flex; gap: 4px; margin-left: auto; }
.site-nav__link {
  font-family: var(--font-sans); font-size: 14px; font-weight: 500; color: var(--text-body); white-space: nowrap;
  text-decoration: none; padding: 8px 14px; border-radius: var(--radius-sm);
  transition: background var(--dur-fast) var(--ease-standard), color var(--dur-fast) var(--ease-standard);
}
.site-nav__link:hover { background: var(--surface-alt); color: var(--text-strong); }
.site-nav__cta { margin-left: var(--space-2); }
@media (max-width: 920px) { .site-nav__cta { margin-left: auto; } }

/* ---- Hero -------------------------------------------------- */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--border-hairline); }
.hero__watermark {
  position: absolute; right: -120px; top: 50%; transform: translateY(-50%);
  width: 560px; max-width: 90vw; opacity: 0.05; pointer-events: none; filter: saturate(0.6);
}
.hero__inner { max-width: var(--container-lg); margin: 0 auto; padding: clamp(72px, 11vw, 148px) var(--gutter) clamp(64px, 9vw, 120px); position: relative; }
.eyebrow { font-family: var(--font-sans); font-weight: 600; font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-brand); margin: 0 0 22px; }
.eyebrow--on-ink { color: var(--brass-300); }
.hero__title {
  font-family: var(--font-serif); font-weight: 600; font-size: clamp(2.75rem, 6.4vw, 5.25rem);
  line-height: 1.02; letter-spacing: -0.02em; color: var(--text-strong); margin: 0 0 28px; max-width: 15ch;
}
.hero__title em { font-style: italic; color: var(--text-brand); }
.hero__lede { font-family: var(--font-serif); font-size: clamp(1.05rem, 1.6vw, 1.375rem); line-height: 1.6; color: var(--text-body); max-width: 54ch; margin: 0 0 36px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 40px; }
.hero__place { font-family: var(--font-sans); font-weight: 600; font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-accent); margin: 0; }
.hero__place span { color: var(--text-subtle); letter-spacing: 0.01em; font-weight: 500; text-transform: none; font-style: italic; font-family: var(--font-serif); font-size: 14px; }

/* ---- Generic section -------------------------------------- */
.section { max-width: var(--container-xl); margin: 0 auto; padding: clamp(64px, 9vw, 112px) var(--gutter); }
.section--alt { max-width: none; background: var(--surface-alt); border-bottom: 1px solid var(--border-hairline); }
.section--alt .section__inner { max-width: var(--container-xl); margin: 0 auto; }
.section--ink { max-width: none; background: var(--surface-ink); color: var(--text-on-ink); }
.section__head { max-width: 60ch; margin-bottom: 48px; }
.section__title { font-family: var(--font-serif); font-weight: 600; font-size: clamp(2rem, 4vw, 3rem); line-height: 1.08; letter-spacing: -0.018em; color: var(--text-strong); margin: 0 0 16px; }
.section__sub { font-family: var(--font-serif); font-size: 1.125rem; line-height: 1.6; color: var(--text-muted); margin: 0; }

/* ---- What I build (service cards) ------------------------- */
.build__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.build-card { display: flex; flex-direction: column; min-height: 236px; }
.build-card__mark {
  width: 46px; height: 46px; border-radius: var(--radius-md); display: inline-flex; align-items: center; justify-content: center;
  background: var(--oxblood-50); color: var(--oxblood-700); border: 1px solid var(--oxblood-100); margin-bottom: 22px;
}
.build-card__mark svg { width: 22px; height: 22px; }
.build-card__name { font-family: var(--font-serif); font-weight: 600; font-size: 1.375rem; color: var(--text-strong); margin: 0 0 12px; letter-spacing: -0.01em; line-height: 1.15; }
.build-card__line { font-family: var(--font-serif); font-size: 1rem; line-height: 1.55; color: var(--text-muted); margin: 0; }

/* ---- Proof of work (own-work cards) ----------------------- */
.proof__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.proof-card { display: flex; flex-direction: column; min-height: 220px; text-decoration: none; }
.proof-card__head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.proof-card__name { font-family: var(--font-serif); font-weight: 600; font-size: 1.25rem; color: var(--text-strong); margin: 0; letter-spacing: -0.01em; line-height: 1.2; }
.proof-card__ext { flex: 0 0 auto; color: var(--text-subtle); transition: color var(--dur-fast) var(--ease-standard); }
.proof-card__ext svg { width: 16px; height: 16px; display: block; }
.proof-card:hover .proof-card__ext { color: var(--text-brand); }
.proof-card__line { font-family: var(--font-serif); font-size: 1rem; line-height: 1.55; color: var(--text-muted); margin: 0 0 auto; }
.proof-card__tags { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin: 22px 0 0; padding: 0; }

/* ---- How I work (ink) ------------------------------------- */
.how { max-width: var(--container-xl); margin: 0 auto; padding: 0 var(--gutter); display: grid; grid-template-columns: 1.1fr 1fr; gap: clamp(40px, 6vw, 88px); align-items: start; }
.how__title { font-family: var(--font-serif); font-weight: 600; font-size: clamp(1.9rem, 3.4vw, 2.75rem); line-height: 1.1; letter-spacing: -0.02em; color: var(--parchment-50); margin: 0 0 22px; }
.how__body { font-family: var(--font-serif); font-size: 1.1rem; line-height: 1.65; color: var(--parchment-200); margin: 0 0 28px; max-width: 46ch; }
.how__rule { border: none; border-top: 1.5px solid var(--brass-500); width: 64px; margin: 0; }
.principles { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 4px; }
.principle { display: flex; gap: 20px; padding: 22px 0; border-bottom: 1px solid var(--border-on-ink); }
.principle:last-child { border-bottom: none; }
.principle__n { font-family: var(--font-serif); font-style: italic; font-size: 1.25rem; color: var(--brass-400); flex: 0 0 36px; line-height: 1.4; }
.principle__t { font-family: var(--font-serif); font-weight: 600; font-size: 1.25rem; color: var(--parchment-50); margin: 0 0 6px; }
.principle__d { font-family: var(--font-serif); font-size: 1rem; line-height: 1.55; color: var(--parchment-200); margin: 0; }

/* ---- Contact ---------------------------------------------- */
.contact__inner { max-width: 56ch; margin: 0 auto; text-align: center; }
.contact__title { font-family: var(--font-serif); font-weight: 600; font-size: clamp(2rem, 4vw, 3rem); line-height: 1.06; letter-spacing: -0.018em; color: var(--text-strong); margin: 0 0 20px; }
.contact__body { font-family: var(--font-serif); font-size: 1.22rem; line-height: 1.7; color: var(--text-body); margin: 0 0 32px; }
.contact__actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin-bottom: 28px; }
.contact__secondary { display: flex; flex-wrap: wrap; gap: 8px 28px; justify-content: center; }
.contact__secondary a { font-family: var(--font-sans); font-size: 14px; font-weight: 500; color: var(--text-muted); text-decoration: none; display: inline-flex; align-items: center; gap: 7px; padding: 6px 4px; border-radius: var(--radius-sm); transition: color var(--dur-fast) var(--ease-standard); }
.contact__secondary a:hover { color: var(--text-brand); }
.contact__secondary svg { width: 15px; height: 15px; }

/* ---- Footer ----------------------------------------------- */
.site-footer { background: var(--surface-brand); color: var(--text-on-brand); }
.site-footer__inner {
  max-width: var(--container-xl); margin: 0 auto; padding: clamp(48px, 7vw, 72px) var(--gutter) 40px;
  display: flex; align-items: flex-end; justify-content: space-between; flex-wrap: wrap; gap: 28px;
}
.site-footer__brand { display: flex; flex-direction: column; gap: 8px; }
.site-footer__name { font-family: var(--font-serif); font-weight: 600; font-size: 1.375rem; color: var(--cream); letter-spacing: -0.01em; }
.site-footer__name span { color: var(--oxblood-200); font-weight: 500; }
.site-footer__place { font-family: var(--font-sans); font-size: 12px; letter-spacing: 0.02em; color: var(--oxblood-200); }
.site-footer__links { display: flex; flex-direction: column; gap: 6px; align-items: flex-end; text-align: right; }
.site-footer__links a { font-family: var(--font-serif); font-size: 1rem; color: var(--parchment-100); text-decoration: none; transition: color var(--dur-fast) var(--ease-standard); }
.site-footer__links a:hover { color: var(--cream); }
.site-footer__base {
  max-width: var(--container-xl); margin: 0 auto; padding: 20px var(--gutter); border-top: 1px solid var(--border-on-ink);
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px;
}
.site-footer__venture { font-family: var(--font-sans); font-weight: 500; font-size: 12px; letter-spacing: 0.03em; color: var(--brass-300); }
.site-footer__legal { font-family: var(--font-sans); font-size: 12px; color: var(--oxblood-200); }

/* ---- Buttons: anchor variants of DS button ---------------- */
a.wsc-btn { text-decoration: none; }
.wsc-btn__icon { display: inline-flex; align-items: center; }
.wsc-btn__icon svg { width: 18px; height: 18px; }

/* ---- Responsive ------------------------------------------- */
@media (max-width: 920px) {
  .site-nav__links { display: none; }
  .build__grid { grid-template-columns: repeat(2, 1fr); }
  .proof__grid { grid-template-columns: 1fr; }
  .how { grid-template-columns: 1fr; }
  .site-footer__inner { align-items: flex-start; }
  .site-footer__links { align-items: flex-start; text-align: left; }
}
@media (max-width: 560px) {
  .build__grid { grid-template-columns: 1fr; }
  .site-footer__base { flex-direction: column; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
}