/* ─────────────────────────────────────────────────────────────
   Clyffe website — placeholder marketing site.
   Layout + page styles on top of the design-system tokens
   (design/styles.css). Follows the brand: flat cards, navy hero,
   generous white space, Ember reserved for the single CTA.
   ───────────────────────────────────────────────────────────── */

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-weight: var(--weight-body);
  font-size: var(--text-body-size);
  line-height: var(--leading-body);
  color: var(--text-body);
  background: var(--surface-page);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }

a { color: var(--cove); text-decoration: none; transition: var(--transition-micro); }
a:hover { opacity: var(--hover-opacity); }

:focus-visible {
  outline: none;
  box-shadow: var(--focus-shadow);
  border-radius: var(--radius-sm);
}

/* ── Layout shell ── */
.wrap {
  width: 100%;
  max-width: 1040px;
  margin: 0 auto;
  padding-inline: var(--space-4);
}

section { padding-block: var(--space-8); }

/* ── Typography helpers ── */
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-mono-size);
  font-weight: var(--weight-mono);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--text-label);
  margin: 0 0 var(--space-3);
}

h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--text-heading);
  margin: 0;
  letter-spacing: var(--tracking-display);
  line-height: var(--leading-heading);
}

.display {
  font-weight: var(--weight-display-light);
  font-size: clamp(34px, 6vw, 52px);
  line-height: var(--leading-display);
}

h2.section-title {
  font-weight: var(--weight-display);
  font-size: clamp(26px, 4vw, 32px);
  margin-bottom: var(--space-6);
}

.lede {
  font-size: clamp(16px, 2.2vw, 19px);
  line-height: var(--leading-relaxed);
  max-width: 60ch;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-weight: var(--weight-body-semibold);
  font-size: var(--text-body-size);
  letter-spacing: var(--tracking-ui);
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition-micro);
}
.btn:active { transform: scale(var(--press-scale)); }

/* Ember is reserved for the single primary call to action. */
.btn-primary {
  background: var(--action-attention);
  color: var(--white);
}
.btn-primary:hover { opacity: var(--hover-opacity); }

.btn-ghost {
  background: transparent;
  color: var(--parchment);
  border-color: var(--white-25);
}
.btn-ghost:hover { background: var(--white-08); opacity: 1; }

.btn-outline {
  background: transparent;
  color: var(--navy);
  border-color: var(--border-strong);
}
.btn-outline:hover { background: var(--navy-05); opacity: 1; }

/* ── Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--white-60);
  backdrop-filter: var(--blur-overlay);
  border-bottom: 1px solid var(--border-hairline);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3);
}
.brand { display: inline-flex; }
.brand img { height: 48px; width: auto; }
.nav { display: flex; align-items: center; gap: var(--space-5); }
.nav a {
  color: var(--text-strong);
  font-weight: var(--weight-body-medium);
  font-size: var(--text-body-size);
}
.nav a.nav-cta { color: var(--cove); font-weight: var(--weight-body-semibold); }

/* ── Hero (full-bleed navy) ── */
.hero {
  position: relative;
  background: var(--surface-inverse);
  color: var(--text-on-navy);
  overflow: hidden;
  padding-block: clamp(72px, 12vw, 140px);
}
/* Faint concentric arcs echoing the logo geometry. */
.hero::before {
  content: "";
  position: absolute;
  top: 50%;
  right: -10%;
  width: 720px;
  height: 720px;
  transform: translateY(-50%);
  border-radius: 50%;
  background:
    radial-gradient(circle, transparent 58%, var(--white-08) 58.5%, transparent 60%),
    radial-gradient(circle, transparent 72%, var(--white-08) 72.5%, transparent 74%),
    radial-gradient(circle, transparent 86%, var(--white-08) 86.5%, transparent 88%);
  pointer-events: none;
}
.hero .wrap { position: relative; }
.hero .eyebrow { color: var(--cream-50); }
.hero h1 { color: var(--white); }
.hero .lede { color: var(--cream-90); margin-top: var(--space-4); }
.hero .actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

/* ── Cards / feature grid ── */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--gap-content);
}
.card {
  background: var(--surface-card);
  border: var(--border-card);
  border-radius: var(--radius-xs);
  padding: var(--pad-card);
}
.card h3 {
  font-family: var(--font-body);
  font-weight: var(--weight-body-medium);
  font-size: var(--text-h2-size);
  letter-spacing: 0;
  color: var(--text-strong);
  margin-bottom: var(--space-2);
}
.card p { margin: 0; }
.card .mark {
  font-family: var(--font-mono);
  font-size: var(--text-mono-size);
  letter-spacing: var(--tracking-mono);
  color: var(--cove);
  margin-bottom: var(--space-3);
}

/* ── Alternating warm section ── */
.section-canvas { background: var(--surface-canvas); }
.section-warm { background: var(--surface-warm); }

/* ── Contact ── */
.contact .wrap { max-width: 720px; text-align: center; }
.contact .lede { margin-inline: auto; }
.email-line {
  font-family: var(--font-mono);
  font-size: clamp(18px, 3vw, 24px);
  letter-spacing: var(--tracking-mono);
  color: var(--navy);
  margin-top: var(--space-5);
}
.contact .actions {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-5);
  flex-wrap: wrap;
}

/* ── Footer ── */
.site-footer {
  background: var(--surface-inverse);
  color: var(--text-on-navy-muted);
  padding-block: var(--space-6);
}
.site-footer .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.site-footer img { height: 40px; width: auto; }
.site-footer a { color: var(--cream-90); }
.site-footer .muted { font-size: var(--text-caption-size); }

@media (max-width: 640px) {
  .nav a:not(.nav-cta) { display: none; }
  section { padding-block: var(--space-7); }
}