/* Keith Chernek — kchernek.com | Shared design system styles */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Design tokens ── */
:root {
  --background:     #F3F1ED;
  --surface:        #FFFFFF;
  --text-primary:   #2A2622;
  --text-secondary: #6B6359;
  --text-muted:     #9A9088;
  --border:         rgba(42, 38, 34, 0.14);
  --accent-rare:    #4A5868;
  --font-family:    'Noto Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --max-width:      1035px;
}

/* ── Base ── */
html { font-size: 16px; }

body {
  font-family: var(--font-family);
  background-color: var(--background);
  color: var(--text-primary);
  line-height: 1.7;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

/* ── Site Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--background);
  will-change: transform;
}

/* GPU-safe drop shadow: opacity on a static pseudo-element, not box-shadow animation */
.site-header::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 0;
  box-shadow: 0 4px 16px rgba(42, 38, 34, 0.1);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.site-header.shrunk::after { opacity: 1; }

/* Instant state changes — no layout-reflow animation */
.site-header.shrunk .masthead { padding-top: 12px; padding-bottom: 8px; }
.site-header.shrunk .logo-img { height: 30px; }

/* ── Masthead ── */
.masthead {
  text-align: center;
  padding: 34px 20px 22px;
}

.logo-link { display: inline-block; text-decoration: none; }

.logo-img {
  height: 48px;
  width: auto;
  display: block;
  margin: 0 auto 14px;
}

.site-name {
  font-size: 2.2rem;
  font-weight: 300;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--text-primary);
  line-height: 1.1;
  display: block;
}

.site-tagline {
  font-size: 0.58rem;
  font-weight: 400;
  letter-spacing: 0.48em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 8px;
}

/* ── Nav row (border container) ── */
.nav-row {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: relative;
}

/* ── Navigation ── */
.site-nav {
  padding: 11px 4vw;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 0;
}

.site-nav > a {
  display: inline-flex;
  align-items: center;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-primary);
  text-decoration: none;
  padding: 2px 10px;
  transition: color 0.2s ease;
}

.site-nav > a:hover         { color: var(--accent-rare); }
.site-nav > a.active        { color: var(--text-secondary); }
.site-nav > a:focus-visible {
  outline: 2px solid var(--text-secondary);
  outline-offset: 2px;
}

/* ── Dropdown menus ── */
.nav-dropdown {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.nav-dropdown-trigger {
  font-family: var(--font-family);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-primary);
  background: none;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 2px 10px;
  transition: color 0.2s ease;
}

.nav-dropdown-trigger:hover         { color: var(--accent-rare); }
.nav-dropdown-trigger.active        { color: var(--text-secondary); }
.nav-dropdown-trigger:focus-visible {
  outline: 2px solid var(--text-secondary);
  outline-offset: 2px;
}

.dropdown-arrow {
  display: inline-block;
  font-size: 0.45rem;
  transition: transform 0.2s ease;
}

.nav-dropdown[data-open] .dropdown-arrow { transform: rotate(180deg); }

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--background);
  border: 1px solid var(--border);
  min-width: 200px;
  padding: 6px 0;
  display: none;
  z-index: 200;
  box-shadow: 0 4px 20px rgba(42, 38, 34, 0.08);
}

.nav-dropdown[data-open] .nav-dropdown-menu { display: block; }

.nav-dropdown-menu a {
  display: block;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-primary);
  text-decoration: none;
  padding: 11px 22px;
  white-space: nowrap;
  transition: color 0.2s ease, background-color 0.15s ease;
}

.nav-dropdown-menu a:hover {
  color: var(--accent-rare);
  background-color: rgba(42, 38, 34, 0.04);
}

.nav-dropdown-menu a.active { color: var(--text-secondary); }

/* ── Hamburger button (hidden on desktop) ── */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 14px 16px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  min-height: 44px;
  min-width: 44px;
}

.hamburger-bar {
  display: block;
  width: 20px;
  height: 1.5px;
  background-color: var(--text-primary);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle[aria-expanded="true"] .hamburger-bar:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .hamburger-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .hamburger-bar:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ── Inner page layout ── */
.page-wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 60px 4vw 80px;
}

.page-header {
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}

.page-title {
  font-size: 2.5rem;
  font-weight: 300;
  line-height: 1.2;
  letter-spacing: 0;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.page-intro {
  font-size: 0.975rem;
  line-height: 1.75;
  color: var(--text-primary);
  max-width: 600px;
}

/* ── Placeholder state (pages not yet built) ── */
.placeholder-body {
  text-align: center;
  padding: 100px 20px;
  color: var(--text-muted);
}

.placeholder-body p {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  margin-top: 8px;
}

/* ── Footer ── */
.footer-social {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 16px;
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  text-decoration: none;
  opacity: 0.7;
  transition: opacity 0.2s ease, color 0.2s ease;
}

.footer-social a:hover         { opacity: 1; color: var(--text-primary); }
.footer-social a:focus-visible {
  outline: 2px solid var(--text-secondary);
  outline-offset: 3px;
  opacity: 1;
}

footer {
  background-color: var(--background);
  border-top: 1px solid var(--border);
  padding: 40px 4vw;
  text-align: center;
  margin-top: 60px;
}

.footer-tagline {
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.footer-contact {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 2.0;
}

.footer-contact a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-contact a:hover { color: var(--accent-rare); }

.footer-copy {
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-top: 20px;
  opacity: 0.7;
}

/* ── Global primary button ── */
.btn-primary {
  display: inline-block;
  background-color: var(--text-secondary);
  color: #fff;
  font-family: var(--font-family);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 16px 28px;
  border: none;
  border-radius: 0;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 0.2s ease;
}

.btn-primary:hover         { background-color: var(--text-primary); color: #fff; }
.btn-primary:active        { transform: scale(0.99); }
.btn-primary:focus-visible {
  outline: 2px solid var(--text-primary);
  outline-offset: 2px;
}

/* ── Page-level CTA section ── */
.page-cta {
  border-top: 1px solid var(--border);
  padding-top: 48px;
  margin-top: 60px;
}

.page-cta--centered { text-align: center; }

.page-cta .cta-prompt {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

/* ── Scroll-triggered fade-in ── */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  will-change: opacity, transform;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
  will-change: auto;
}

/* ── Mobile ── */
@media (max-width: 640px) {
  /* Site name: scale down to avoid wrapping */
  .site-name { font-size: 1.55rem; }

  /* Hamburger: visible, full-width so bars center correctly */
  .nav-toggle { display: flex; width: 100%; }

  /* Nav: hidden overlay, appears below .nav-row when open */
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--background);
    border-bottom: 1px solid var(--border);
    padding: 0;
    z-index: 100;
  }

  .site-nav.open { display: flex; }

  /* Top-level links: full-width, 44px tap targets */
  .site-nav > a {
    justify-content: center;
    min-height: 44px;
    padding: 10px 4vw;
    border-top: 1px solid var(--border);
  }

  /* Dropdowns: stack full-width */
  .nav-dropdown {
    display: flex;
    flex-direction: column;
    width: 100%;
  }

  .nav-dropdown-trigger {
    width: 100%;
    justify-content: center;
    min-height: 44px;
    padding: 10px 4vw;
    border-top: 1px solid var(--border);
  }

  /* Sub-menu: static, full-width panel */
  .nav-dropdown-menu {
    position: static;
    transform: none;
    left: auto;
    box-shadow: none;
    border: none;
    border-top: 1px solid var(--border);
    min-width: unset;
    background: rgba(42, 38, 34, 0.03);
    padding: 0;
  }

  .nav-dropdown-menu a {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 10px 4vw;
    font-size: 0.58rem;
    white-space: normal;
    border-top: 1px solid var(--border);
  }

  .nav-dropdown-menu a:first-child { border-top: none; }

  .page-title { font-size: 1.8rem; }
}