/* ===============================================
   Twin Networks — Shared styles
   Loaded by every page; contains design tokens,
   nav, footer, typography base, common utilities.
   =============================================== */

:root {
  /* Blues — editorial navy gradient */
  --blue-deep:  #0A1E32;
  --blue-dark:  #0A3764;
  --blue-mid:   #0A4F95;
  --blue-steel: #065C92;
  --blue-teal:  #01688F;
  --blue-teal-bright: #2A8FB8;

  /* Surfaces */
  --surface-light: #F4F7FB;
  --surface-white: #FFFFFF;
  --surface-warm:  #EBF0F8;

  /* Accent */
  --gold:      #C9A227;
  --gold-soft: rgba(201,162,39,0.15);
  --gold-bright: #d9b639;

  /* Ink */
  --ink:          #0A1E32;
  --ink-2:        #2D4A6B;
  --ink-3:        #6B8BAE;
  --ink-inv:      #EEF3FA;
  --ink-inv-soft: rgba(238,243,250,0.85);

  /* Rules */
  --rule:      rgba(10,79,149,0.18);
  --rule-dark: rgba(10,79,149,0.3);

  /* Type */
  --serif: 'Merriweather', Georgia, serif;
  --sans:  'Montserrat', ui-sans-serif, system-ui, sans-serif;
  --mono:  'JetBrains Mono', ui-monospace, monospace;

  /* Layout */
  --maxw: 1240px;
}

/* ——— Reset / base ——— */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  font-family: var(--sans); color: var(--ink);
  background: var(--surface-white);
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
em { font-style: italic; }
img { max-width: 100%; display: block; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 2rem; }

.skip-link { position: absolute; left: -9999px; top: 0; }
.skip-link:focus {
  left: 0; background: var(--gold); color: var(--blue-deep);
  padding: .5rem 1rem; z-index: 1000;
}

/* ——— NAV ——— */
.site-nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.1rem 2rem;
  background: rgba(10, 30, 50, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.nav-brand .logo { height: 28px; display: block; }
.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a:not(.nav-cta) {
  font-family: var(--sans); font-size: .78rem; font-weight: 500;
  letter-spacing: .05em; color: var(--ink-inv-soft);
  transition: color .2s ease;
}
.nav-links a:not(.nav-cta):hover { color: var(--gold); }
.nav-links a.current { color: var(--gold); }
.nav-cta {
  font-family: var(--sans); font-size: .72rem; font-weight: 700;
  letter-spacing: .12em; text-transform: uppercase;
  padding: .7rem 1.25rem; border-radius: 3px;
  background: var(--gold); color: var(--blue-deep) !important;
  transition: all .2s ease;
}
.nav-cta:hover { background: var(--gold-bright); transform: translateY(-1px); }
@media (max-width: 900px) {
  .nav-links a:not(.nav-cta) { display: none; }
}

/* ——— BUTTONS (shared) ——— */
.btn {
  display: inline-flex; align-items: center; gap: .6rem;
  font-family: var(--sans); font-size: .8rem; font-weight: 700;
  letter-spacing: .12em; text-transform: uppercase;
  padding: 1rem 1.75rem; border-radius: 3px;
  transition: all .25s ease; cursor: pointer; border: 0;
  white-space: nowrap;
}
.btn-primary {
  background: var(--blue-mid); color: #fff;
}
.btn-primary:hover { background: var(--blue-steel); transform: translateY(-1px); }

.btn-gold {
  background: var(--gold); color: var(--blue-deep);
}
.btn-gold:hover { background: var(--gold-bright); transform: translateY(-1px); }

.btn-ghost-dark {
  background: transparent; color: var(--ink);
  border: 1px solid var(--rule);
}
.btn-ghost-dark:hover { background: var(--surface-warm); }

.btn-ghost-light {
  background: transparent; color: var(--ink-inv);
  border: 1px solid rgba(255,255,255,0.3);
}
.btn-ghost-light:hover { background: rgba(255,255,255,0.08); border-color: var(--gold); }

/* ——— FOOTER ——— */
footer {
  background: var(--blue-deep); color: var(--ink-inv-soft);
  padding: 5rem 0 2.5rem;
  border-top: 1px solid rgba(10,79,149,0.2);
}
footer .foot-top {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem; padding-bottom: 3rem;
  border-bottom: 1px solid rgba(10,79,149,0.2);
}
footer .foot-brand img { height: 36px; }
footer .foot-tag {
  margin-top: 1.25rem; max-width: 36ch;
  font-family: var(--serif); font-style: italic; font-size: 1.02rem; line-height: 1.5;
  color: var(--ink-inv-soft);
}
footer .foot-contact {
  margin-top: 1.5rem;
  font-family: var(--mono); font-size: .7rem; letter-spacing: .08em;
  color: var(--ink-inv-soft); line-height: 1.8;
}
footer .foot-contact a { color: var(--gold); }
footer h5 {
  font-family: var(--sans); font-size: .68rem; letter-spacing: .2em;
  text-transform: uppercase; color: var(--gold);
  font-weight: 700; margin-bottom: 1rem;
}
footer .f-col a {
  display: block; font-family: var(--sans); font-size: .82rem;
  padding: .3rem 0; color: var(--ink-inv-soft);
  transition: color .2s ease;
}
footer .f-col a:hover { color: var(--gold); }
footer .foot-bot {
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap;
  gap: 1rem; padding-top: 2rem;
  font-family: var(--mono); font-size: .62rem; letter-spacing: .14em;
  color: rgba(238,243,250,0.5); text-transform: uppercase;
}
footer .foot-anniv { height: 40px; opacity: .8; }
@media (max-width: 900px) {
  footer .foot-top { grid-template-columns: 1fr 1fr; }
}

/* ——— REVEAL animation ——— */
.reveal {
  opacity: 0; transform: translateY(24px);
  transition: opacity .7s ease, transform .7s cubic-bezier(.2,.9,.2,1);
}
.reveal.in { opacity: 1; transform: none; }

/* ——— Page-level common patterns ——— */
.page-eb {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .22em;
  text-transform: uppercase; color: var(--gold);
  display: inline-flex; align-items: center; gap: .6rem;
  margin-bottom: 1.5rem;
}
.page-eb .dot {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--gold); animation: tn-pulse 2s infinite;
}
@keyframes tn-pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50%     { opacity: .4; transform: scale(1.4); }
}

/* Hero — dark header used by most sub-pages */
.page-hero {
  padding: 6rem 2rem 4.5rem;
  background: linear-gradient(180deg, var(--blue-deep) 0%, var(--blue-dark) 100%);
  color: var(--ink-inv);
  position: relative; overflow: hidden;
}
.page-hero::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(circle at 85% 30%, rgba(201,166,107,0.12), transparent 45%),
    radial-gradient(circle at 10% 80%, rgba(1,104,143,0.2), transparent 50%);
}
.page-hero .inner {
  max-width: 960px; margin: 0 auto;
  position: relative; z-index: 1;
}
.page-hero h1 {
  font-family: var(--serif); font-weight: 900;
  font-size: clamp(2.2rem, 4.8vw, 3.8rem);
  line-height: 1.08; letter-spacing: -0.02em;
  margin-bottom: 1.75rem; max-width: 22ch;
}
.page-hero h1 em { color: var(--gold); font-weight: 400; }
.page-hero .lede {
  font-family: var(--serif); font-size: 1.1rem; line-height: 1.75;
  color: var(--ink-inv-soft); max-width: 62ch;
}

/* Section label used across pages */
.sec-head { max-width: 760px; margin-bottom: 3.5rem; }
.sec-head .label {
  font-family: var(--mono); font-size: .68rem; letter-spacing: .24em;
  text-transform: uppercase; color: var(--blue-teal);
  margin-bottom: 1.2rem; display: inline-block;
}
.sec-head h2 {
  font-family: var(--serif); font-weight: 900;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  line-height: 1.2; letter-spacing: -0.01em;
  color: var(--ink);
}
.sec-head h2 em { font-style: italic; font-weight: 400; color: var(--blue-steel); }
.sec-head .sub {
  font-family: var(--serif); font-size: 1.05rem; line-height: 1.75;
  color: var(--ink-2); margin-top: 1.25rem; max-width: 58ch;
}

/* Dark background section (for manifestos, CTAs, founder rollouts) */
.section-dark {
  background: var(--blue-deep); color: var(--ink-inv);
}
.section-dark .sec-head .label { color: var(--gold); }
.section-dark .sec-head h2 { color: var(--ink-inv); }
.section-dark .sec-head h2 em { color: var(--gold); }
.section-dark .sec-head .sub { color: var(--ink-inv-soft); }

.section-warm {
  background: var(--surface-warm);
}

.section { padding: 6rem 2rem; }
@media (max-width: 780px) { .section { padding: 4rem 1.5rem; } }

/* Big CTA band */
.cta-band {
  background:
    linear-gradient(135deg, var(--blue-deep), var(--blue-dark));
  color: var(--ink-inv); text-align: center;
  padding: 6rem 2rem;
}
.cta-band .inner { max-width: 720px; margin: 0 auto; }
.cta-band .eb {
  font-family: var(--mono); font-size: .7rem; letter-spacing: .24em;
  text-transform: uppercase; color: var(--gold);
  margin-bottom: 1.5rem;
}
.cta-band h2 {
  font-family: var(--serif); font-weight: 900;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15; letter-spacing: -0.01em;
  color: var(--ink-inv); margin-bottom: 2rem;
}
.cta-band h2 em { font-style: italic; font-weight: 400; color: var(--gold); }
.cta-band .meta {
  margin-top: 1.75rem;
  font-family: var(--mono); font-size: .68rem; letter-spacing: .12em;
  color: var(--ink-inv-soft); text-transform: uppercase;
}


/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   MOBILE NAV — hamburger + slide-down
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.nav-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  border-radius: 3px;
  transition: background .2s;
}
.nav-burger:hover { background: rgba(255,255,255,0.08); }
.nav-burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink-inv);
  border-radius: 2px;
  transition: all .25s ease;
  transform-origin: center;
}
.nav-burger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-burger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-burger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile dropdown panel */
.nav-mobile-panel {
  display: none;
  position: fixed;
  top: 60px;
  left: 0;
  right: 0;
  background: rgba(10,20,40,0.98);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(201,162,39,0.2);
  z-index: 49;
  padding: 1.5rem 2rem 2rem;
  transform: translateY(-8px);
  opacity: 0;
  transition: transform .22s ease, opacity .22s ease;
}
.nav-mobile-panel.open {
  display: block;
  transform: translateY(0);
  opacity: 1;
}
.nav-mobile-panel a {
  display: block;
  font-family: var(--sans);
  font-size: .95rem;
  font-weight: 500;
  color: var(--ink-inv-soft);
  padding: .85rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  letter-spacing: .02em;
  transition: color .18s;
  text-decoration: none;
}
.nav-mobile-panel a:hover,
.nav-mobile-panel a:focus { color: var(--gold); }
.nav-mobile-panel a:last-child {
  border-bottom: none;
  margin-top: .5rem;
  color: var(--blue-deep);
  background: var(--gold);
  text-align: center;
  padding: .9rem;
  border-radius: 2px;
  font-weight: 700;
  letter-spacing: .04em;
}
.nav-mobile-panel a:last-child:hover { background: #d9b639; color: var(--blue-deep); }

@media (max-width: 900px) {
  .nav-burger { display: flex; }
}