/* ============================================================
   MAIN.CSS — Backbone Consulting
   Shared: variables, reset, typography, nav, footer, buttons
   ============================================================ */

/* ── VARIABLES ── */
:root {
  --bg:            #F7F4EF;
  --surface:       #FFFFFF;
  --surface-alt:   #EDEBE5;
  --text:          #1A1916;
  --text-muted:    #6B6860;
  --accent:        #2B6B47;
  --accent-dark:   #1E4E33;
  --accent-light:  #EBF4EF;
  --border:        #DDD9CF;
  --border-strong: #B5B1A8;
  --nav-height:    64px;
}

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

/* ── BODY ── */
body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ── HEADINGS ── */
h1, h2, h3, h4 {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

a { color: inherit; text-decoration: none; }

/* ── CONTAINER ── */
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 36px;
}

/* ── LABELS ── */
.eyebrow {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 32px;
}

.section-label {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 52px;
}

/* ── SECTION ── */
.section {
  padding: 100px 0;
  border-top: 1px solid var(--border);
}

.hero-rule {
  width: 72px; height: 2px;
  background: var(--accent);
  margin-bottom: 28px;
}

/* ── GRID UTILITIES ── */
.grid-line {
  display: grid;
  gap: 2px;
  background: var(--border);
}

.cell {
  background: var(--surface);
  padding: 52px 44px;
}

/* ── BUTTONS ── */
.btn {
  display: inline-block;
  padding: 13px 30px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  transition: transform .15s, background .18s, border-color .18s, color .18s;
  cursor: pointer;
}
.btn:hover { transform: translateY(-1px); }

.btn-dark {
  background: var(--text);
  color: var(--bg);
}
.btn-dark:hover { background: var(--accent); color: #fff; }

.btn-outline {
  border: 1px solid var(--border-strong);
  color: var(--text);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.btn-green {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 13px 30px;
  text-align: center;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  transition: background .18s, transform .15s;
}
.btn-green:hover { background: #2D8055; transform: translateY(-1px); }

/* ── BADGE ── */
.service-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-light);
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 22px;
}

/* ── CHIPS ── */
.chip {
  font-size: 12px;
  padding: 4px 12px;
  background: var(--surface-alt);
  border-radius: 4px;
  color: var(--text-muted);
}

.cert-chip {
  font-size: 12px;
  font-weight: 500;
  padding: 5px 13px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-muted);
}

/* ── REVEAL ANIMATION ── */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .55s ease, transform .55s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── NAV ── */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  background: rgba(247, 244, 239, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  gap: 24px;
}

.nav-logo {
  font-family: 'Fraunces', serif;
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.03em;
  flex-shrink: 0;
}
.nav-logo em {
  font-style: italic;
  font-weight: 300;
  color: var(--text-muted);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin-left: auto;
}

.nav-links li a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  padding: 6px 12px;
  border-radius: 6px;
  transition: color .18s, background .18s;
  display: block;
}
.nav-links li a:hover { color: var(--text); background: var(--surface-alt); }
.nav-links li a.active { color: var(--accent); }

/* CTA item in nav */
.nav-cta-item {
  margin-left: 8px;
}
.nav-cta-item a {
  background: var(--text) !important;
  color: var(--bg) !important;
  padding: 9px 20px !important;
  border-radius: 7px;
  font-weight: 500 !important;
  transition: background .18s !important;
}
.nav-cta-item a:hover {
  background: var(--accent) !important;
  color: #fff !important;
}

/* Hamburger button */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 18px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}
.nav-hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .22s ease, opacity .22s ease;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ── FOOTER ── */
.site-footer {
  background: var(--text);
  border-top: 1px solid rgba(247, 244, 239, .09);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 60px;
  padding: 56px 0 40px;
  align-items: start;
}

.footer-logo {
  font-family: 'Fraunces', serif;
  font-size: 18px;
  font-weight: 600;
  color: rgba(247, 244, 239, .75);
  margin-bottom: 10px;
}

.footer-tagline {
  font-size: 13px;
  color: rgba(247, 244, 239, .38);
  line-height: 1.65;
  max-width: 260px;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-nav a {
  font-size: 13px;
  color: rgba(247, 244, 239, .48);
  transition: color .18s;
}
.footer-nav a:hover { color: rgba(247, 244, 239, .85); }

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-contact a,
.footer-contact span {
  font-size: 13px;
  color: rgba(247, 244, 239, .48);
  transition: color .18s;
}
.footer-contact a:hover { color: rgba(247, 244, 239, .85); }
.footer-location { cursor: default; }

.footer-bottom {
  border-top: 1px solid rgba(247, 244, 239, .08);
  padding: 20px 0;
}
.footer-note {
  font-size: 12.5px;
  color: rgba(247, 244, 239, .25);
}

/* ── RESPONSIVE — NAV MOBILE ── */
@media (max-width: 768px) {
  .nav-hamburger { display: flex; }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 16px 20px 24px;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    box-shadow: 0 8px 24px rgba(0,0,0,.07);
  }
  .nav-links.open { display: flex; }

  .nav-links li a {
    padding: 12px 14px;
    font-size: 15px;
    border-radius: 6px;
  }

  .nav-cta-item { margin-left: 0; margin-top: 8px; }
  .nav-cta-item a {
    display: block !important;
    text-align: center;
    padding: 13px 20px !important;
    border-radius: 8px !important;
  }
}

/* ── RESPONSIVE — FOOTER MOBILE ── */
@media (max-width: 768px) {
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 36px;
    padding: 44px 0 32px;
  }
  .footer-nav, .footer-contact { flex-direction: row; flex-wrap: wrap; gap: 12px 24px; }
}

/* ── RESPONSIVE — CONTAINER ── */
@media (max-width: 600px) {
  .container { padding: 0 20px; }
  .section { padding: 72px 0; }
  .cell { padding: 36px 24px; }
}