/* ==========================================================================
   C-Suite Conseils — Editorial Executive Advisory
   Palette: ivory/bone + near-black ink + slate-navy blocks + antique brass
   Display: Fraunces (serif) · Body: Work Sans · Labels: Space Mono
   ========================================================================== */

:root {
  --paper: #f6f1e7;
  --paper-deep: #ede5d2;
  --paper-card: #fbf8f2;
  --ink: #16181c;
  --ink-soft: #4a4f58;
  --ink-faint: #8b8f97;
  --navy: #1b2a3a;
  --navy-deep: #101a24;
  --navy-line: #33465a;
  --brass: #ad8348;
  --brass-light: #c7a868;
  --brass-deep: #8c6b38;
  --line: #dcd3be;
  --line-on-navy: #3c4954;
  --white: #ffffff;
  --shadow-card: 0 1px 0 rgba(22, 24, 28, 0.06);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: 'Work Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.font-serif { font-family: 'Fraunces', Georgia, serif; }
.font-mono { font-family: 'Space Mono', monospace; }

h1, h2, h3, h4, .serif {
  font-family: 'Fraunces', Georgia, serif;
  font-optical-sizing: auto;
  letter-spacing: -0.01em;
  color: var(--ink);
}

::selection { background: var(--brass); color: var(--white); }

/* ---------- Eyebrow / small-caps labels ---------- */
.eyebrow {
  font-family: 'Space Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--brass-deep);
  font-weight: 400;
}
.eyebrow.on-navy { color: var(--brass-light); }

/* ---------- Hairlines ---------- */
.hairline { border-color: var(--line); }
.hairline-navy { border-color: var(--line-on-navy); }

/* ---------- Nav ---------- */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background-color 0.4s ease, border-color 0.4s ease, padding 0.3s ease;
  border-bottom: 1px solid transparent;
}
.site-nav.solid {
  background: rgba(246, 241, 231, 0.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.site-nav .nav-link {
  position: relative;
  font-size: 0.86rem;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  transition: color 0.25s ease;
}
.site-nav.on-dark .nav-link { color: rgba(246,241,231,0.82); }
.site-nav .nav-link:hover { color: var(--brass-deep); }
.site-nav.on-dark .nav-link:hover { color: var(--brass-light); }
.site-nav .nav-link::after {
  content: "";
  position: absolute;
  left: 0; right: 100%; bottom: -4px;
  height: 1px;
  background: currentColor;
  transition: right 0.3s ease;
}
.site-nav .nav-link:hover::after { right: 0; }

.nav-mark {
  width: 34px; height: 34px;
  border: 1px solid var(--brass);
  display: flex; align-items: center; justify-content: center;
  font-family: 'Fraunces', serif;
  font-weight: 500;
  font-size: 0.92rem;
  color: var(--brass);
  flex-shrink: 0;
}
.site-nav.on-dark .nav-mark { color: var(--brass-light); border-color: var(--brass-light); }

.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  letter-spacing: 0.03em;
  padding: 0.72rem 1.4rem;
  border: 1px solid var(--brass);
  color: var(--brass-deep);
  background: transparent;
  transition: background-color 0.3s ease, color 0.3s ease;
  white-space: nowrap;
}
.btn-cta:hover { background: var(--brass); color: var(--white); }
.btn-cta.solid {
  background: var(--brass);
  color: var(--white);
}
.btn-cta.solid:hover { background: var(--brass-deep); border-color: var(--brass-deep); }
.btn-cta.on-navy { color: var(--brass-light); border-color: var(--brass-light); }
.btn-cta.on-navy:hover { background: var(--brass-light); color: var(--navy-deep); }

/* ---------- Mobile full-screen menu ---------- */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--navy-deep);
  z-index: 200;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 2rem 8vw;
  transform: translateY(-100%);
  transition: transform 0.5s cubic-bezier(.77,0,.18,1);
}
.mobile-menu.open { transform: translateY(0); }
.mobile-menu a {
  font-family: 'Fraunces', serif;
  font-size: 2.4rem;
  color: var(--paper);
  display: block;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--line-on-navy);
}
.mobile-menu a:hover { color: var(--brass-light); }

/* ---------- Hero ---------- */
.hero {
  background: var(--navy);
  position: relative;
  overflow: hidden;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line-on-navy) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-on-navy) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.35;
  mask-image: linear-gradient(180deg, transparent, black 20%, black 80%, transparent);
}
.hero-vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 78% 32%, rgba(173,131,72,0.14), transparent 55%);
}
.hero svg.hero-linework path,
.hero svg.hero-linework circle,
.hero svg.hero-linework line {
  stroke: var(--brass);
  vector-effect: non-scaling-stroke;
}

/* ---------- Sections ---------- */
.band-navy { background: var(--navy); color: var(--paper); }
.band-navy-deep { background: var(--navy-deep); color: var(--paper); }
.band-brass-tint { background: var(--paper-deep); }

/* drop cap */
.drop-cap:first-letter {
  font-family: 'Fraunces', serif;
  font-size: 4.4rem;
  font-weight: 500;
  float: left;
  line-height: 0.82;
  padding-right: 0.14em;
  padding-top: 0.06em;
  color: var(--brass-deep);
}

/* pull quote mark */
.quote-mark {
  font-family: 'Fraunces', serif;
  font-size: 6rem;
  line-height: 0.4;
  color: var(--brass);
  opacity: 0.55;
}

/* ---------- Expertise asymmetric grid ---------- */
.expertise-card {
  background: var(--paper-card);
  border: 1px solid var(--line);
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.expertise-card:hover {
  border-color: var(--brass);
  transform: translateY(-3px);
}
.expertise-num {
  font-family: 'Space Mono', monospace;
  font-size: 0.78rem;
  color: var(--brass-deep);
  letter-spacing: 0.05em;
}

/* ---------- Founder credential list ---------- */
.credential-item {
  border-top: 1px solid var(--line-on-navy);
  padding-top: 0.9rem;
}

/* ---------- Monogram graphic (about page) ---------- */
.mono-frame {
  border: 1px solid var(--brass);
  position: relative;
}
.mono-frame::before,
.mono-frame::after {
  content: "";
  position: absolute;
  width: 18px; height: 18px;
  border: 1px solid var(--brass-light);
}
.mono-frame::before { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.mono-frame::after { bottom: -1px; right: -1px; border-left: none; border-top: none; }

/* ---------- Forms ---------- */
.field label {
  display: block;
  font-family: 'Space Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.5rem;
}
.field input, .field select, .field textarea {
  width: 100%;
  background: var(--paper-card);
  border: 1px solid var(--line);
  padding: 0.85rem 1rem;
  font-family: 'Work Sans', sans-serif;
  font-size: 0.95rem;
  color: var(--ink);
  transition: border-color 0.25s ease;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--brass);
}
.field textarea { resize: vertical; min-height: 130px; }

.form-success {
  display: none;
}
.form-success.show { display: block; }

/* ---------- Footer ---------- */
.site-footer a:hover { color: var(--brass-light); }

/* ---------- Reveal (pure CSS, bulletproof if JS never loads) ---------- */
@keyframes revealIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: none; }
}
[data-reveal] {
  animation: revealIn 0.85s cubic-bezier(.22,.75,.32,1) both;
}
[data-reveal-stagger] > * {
  animation: revealIn 0.85s cubic-bezier(.22,.75,.32,1) both;
}
[data-reveal-stagger] > *:nth-child(1) { animation-delay: 0.05s; }
[data-reveal-stagger] > *:nth-child(2) { animation-delay: 0.12s; }
[data-reveal-stagger] > *:nth-child(3) { animation-delay: 0.19s; }
[data-reveal-stagger] > *:nth-child(4) { animation-delay: 0.26s; }
[data-reveal-stagger] > *:nth-child(5) { animation-delay: 0.33s; }
[data-reveal-stagger] > *:nth-child(6) { animation-delay: 0.4s; }
[data-hero-in] {
  animation: revealIn 0.9s cubic-bezier(.22,.75,.32,1) both;
}
[data-hero-in]:nth-of-type(1) { animation-delay: 0.15s; }
[data-hero-in]:nth-of-type(2) { animation-delay: 0.28s; }
[data-hero-in]:nth-of-type(3) { animation-delay: 0.42s; }
[data-hero-in]:nth-of-type(4) { animation-delay: 0.56s; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal], [data-reveal-stagger] > *, [data-hero-in] { animation: none; }
}

/* ---------- FAQ accordion ---------- */
.faq-item summary {
  cursor: pointer;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item[open] .faq-plus { transform: rotate(45deg); }
.faq-plus { transition: transform 0.25s ease; }

/* ---------- Breadcrumb ---------- */
.crumb a { color: var(--ink-faint); }
.crumb a:hover { color: var(--brass-deep); }

/* ---------- Responsive helpers ---------- */
@media (max-width: 767px) {
  .drop-cap:first-letter { font-size: 3.2rem; }
}