/* ============================================================
   Sterling & Cole — layout.css
   Header · footer · sections · grids
   ============================================================ */

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--dark) 92%, transparent);
  backdrop-filter: saturate(1.1) blur(10px);
  border-bottom: 1px solid var(--on-dark-line);
  color: var(--on-dark);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 70px;
}
.wordmark {
  font-family: var(--serif);
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
}
.wordmark .amp { font-style: italic; color: var(--ink-55); padding: 0 0.05em; }
.wordmark img { display: block; height: 30px; width: auto; }
.footer-brand .wordmark img { height: 27px; }

/* Dark header treatment */
.site-header .wordmark { color: var(--on-dark); }
.site-header .wordmark .amp { color: var(--on-dark-60); }
.site-header .btn-primary { background: var(--on-dark); color: var(--dark); }
.site-header .btn-primary:hover { background: #fff; }
.site-header .nav-toggle span { background: var(--on-dark); }
.site-header :focus-visible { outline-color: var(--on-dark); }

.site-nav { display: none; }
.site-header .header-cta { display: none; }

@media (min-width: 900px) {
  .site-nav {
    display: flex;
    gap: 2.25rem;
    margin-left: auto;
  }
  .site-nav a {
    font-size: 0.9rem;
    color: var(--on-dark-60);
    position: relative;
    padding: 0.25rem 0;
    transition: color 0.2s ease;
  }
  .site-nav a::after {
    content: ""; position: absolute; left: 0; bottom: 0;
    width: 100%; height: 1px; background: var(--on-dark);
    transform: scaleX(0); transform-origin: left; transition: transform 0.25s ease;
  }
  .site-nav a:hover { color: var(--on-dark); }
  .site-nav a:hover::after { transform: scaleX(1); }
  .site-header .header-cta { display: inline-flex; margin-left: 2rem; }
}

/* ---------- Sections ---------- */
.section { padding-block: var(--section-y); }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--dark); color: var(--on-dark); }
.section-dark h2, .section-dark h3 { color: var(--on-dark); }
.section-dark .eyebrow { color: var(--on-dark-60); }

.section-head {
  max-width: 40ch;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

/* ---------- Hero ---------- */
.hero { padding-top: clamp(3rem, 6vw, 5.5rem); padding-bottom: var(--section-y); }
.hero-inner { display: grid; gap: clamp(2.5rem, 5vw, 4rem); }
.hero-copy { max-width: 40ch; }
.hero h1 { margin-bottom: 1.75rem; }
.lead {
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  color: var(--ink-70);
  max-width: 46ch;
  margin-bottom: 2.25rem;
}
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1.5rem; }
.hero-media img {
  width: 100%;
  border-radius: var(--radius);
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

@media (min-width: 940px) {
  .hero-inner {
    grid-template-columns: 1.05fr 1fr;
    align-items: center;
  }
  .hero-media img { aspect-ratio: 4 / 5; }
}

/* ---------- Positioning band ---------- */
.band { padding-block: clamp(3.5rem, 7vw, 6rem); border-block: 1px solid var(--line); }
.band-statement {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3.4vw, 2.35rem);
  line-height: 1.28;
  letter-spacing: -0.02em;
  max-width: 24ch;
  margin-inline: auto;
  text-align: center;
}
.band-statement em { color: var(--ink); }

/* ---------- Practices ---------- */
.practice-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.practice {
  padding-block: clamp(1.75rem, 3.2vw, 2.5rem);
  border-bottom: 1px solid var(--line);
}
.practice-body h3 { margin-bottom: 0.6rem; }
.practice-body p { color: var(--ink-70); max-width: 60ch; }

@media (min-width: 760px) {
  .practice-body { display: grid; grid-template-columns: 1fr 1.1fr; gap: 3rem; align-items: baseline; }
  .practice-body p { margin-top: 0; }
}

/* ---------- Approach steps ---------- */
.steps { display: grid; gap: 2rem; }
@media (min-width: 760px) {
  .steps { grid-template-columns: repeat(3, 1fr); gap: clamp(2rem, 3vw, 3rem); }
}
.step { border-top: 2px solid var(--ink); padding-top: 1.5rem; }
.step-num {
  display: block;
  font-family: var(--serif);
  font-size: 2rem;
  color: var(--ink-55);
  margin-bottom: 0.75rem;
}
.step h3 { margin-bottom: 0.75rem; }
.step p { color: var(--ink-70); }

/* ---------- Proof / stats ---------- */
.stats {
  display: grid;
  gap: 2.5rem;
  padding-bottom: clamp(3rem, 6vw, 4.5rem);
  margin-bottom: clamp(3rem, 6vw, 4.5rem);
  border-bottom: 1px solid var(--on-dark-line);
}
@media (min-width: 760px) { .stats { grid-template-columns: repeat(3, 1fr); gap: 3rem; } }
.stat-figure {
  display: block;
  font-family: var(--serif);
  font-size: clamp(2.2rem, 4vw, 3rem);
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
}
.stat-label { color: var(--on-dark-60); max-width: 26ch; display: block; }

.pull-quote { margin: 0; max-width: 34ch; }
.pull-quote p {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 2.8vw, 2rem);
  line-height: 1.32;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}
.pull-quote cite {
  font-style: normal;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--on-dark-60);
}

/* ---------- About ---------- */
.about-grid { display: grid; gap: clamp(2.5rem, 5vw, 4rem); align-items: center; }
.about-copy { max-width: 46ch; }
.about-copy h2 { margin-bottom: 1.5rem; }
.about-copy p + p { margin-top: 1.25rem; color: var(--ink-70); }
.about-copy p:first-of-type { color: var(--ink-70); }
.about-media img {
  width: 100%;
  border-radius: var(--radius);
  aspect-ratio: 4 / 5;
  object-fit: cover;
}
@media (min-width: 860px) {
  .about-grid { grid-template-columns: 1fr 0.85fr; }
}

/* ---------- Contact ---------- */
.contact-grid { display: grid; gap: clamp(2.5rem, 5vw, 4rem); }
.contact-copy { max-width: 38ch; }
.contact-copy h2 { margin-bottom: 1.25rem; }
.contact-copy p { color: var(--ink-70); }
.contact-row {
  display: grid;
  gap: 0.35rem;
  padding-block: 1.25rem;
  border-top: 1px solid var(--line);
}
.contact-row:last-child { border-bottom: 1px solid var(--line); }
.contact-label {
  font-size: 0.72rem; font-weight: 500; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ink-55);
}
.contact-value { font-size: 1.15rem; font-family: var(--serif); letter-spacing: -0.01em; }
a.contact-value { transition: opacity 0.2s ease; }
a.contact-value:hover { opacity: 0.6; }
@media (min-width: 760px) {
  .contact-grid { grid-template-columns: 1fr 1fr; align-items: start; }
}

/* ---------- Footer ---------- */
.site-footer { background: var(--dark); color: var(--on-dark); padding-block: clamp(3rem, 6vw, 4.5rem); }
.footer-inner {
  display: grid;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--on-dark-line);
}
.footer-brand .wordmark { color: var(--on-dark); font-size: 1.4rem; }
.footer-brand .wordmark .amp { color: var(--on-dark-60); }
.footer-brand p { color: var(--on-dark-60); margin-top: 0.75rem; max-width: 30ch; }
.footer-nav, .footer-legal { display: flex; flex-wrap: wrap; gap: 1.5rem; align-content: start; }
.footer-nav a, .footer-legal a { color: var(--on-dark-60); font-size: 0.9rem; transition: color 0.2s ease; }
.footer-nav a:hover, .footer-legal a:hover { color: var(--on-dark); }
.footer-base {
  display: flex; flex-wrap: wrap; gap: 0.5rem 2rem;
  justify-content: space-between; padding-top: 2rem;
}
.footer-base p { color: var(--on-dark-60); font-size: 0.82rem; }
@media (min-width: 760px) {
  .footer-inner { grid-template-columns: 1.5fr 1fr 1fr; gap: 3rem; }
}