/* ============================================================
   VFIntel Constellation Design System
   Shared stylesheet: tokens, base, nav, footer, kickers,
   headings, buttons, cards, stat cells, reveal states,
   scroll progress bar, reduced-motion overrides.
   Pages add only page-specific styles on top of this file.
   ============================================================ */

:root{
  --space:#0A1226;
  --navy:#0F1B33;
  --card:#141F38;
  --edge:#243252;
  --white:#FFFFFF;
  --body:#B8C4D4;
  --dim:#8291A8;
  --mint:#10B981;
  --emerald:#006B3F;
  --emerald-bright:#00A660;
  --pale:#ECFDF5;
  --ink:#0A0F1C;
}

/* ============ RESET / BASE ============ */
*,*::before,*::after{box-sizing:border-box;}
*{margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:'Inter Tight',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  background:var(--space);
  color:var(--white);
  font-size:18px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg,canvas{display:block;max-width:100%;}
a{color:inherit;}
button{font-family:inherit;}
::selection{background:var(--mint);color:var(--navy);}

.serif{font-family:Georgia,'Times New Roman',serif;font-weight:400;}
h1,h2,h3.serif-h{font-family:Georgia,'Times New Roman',serif;font-weight:400;letter-spacing:-0.01em;}
em{font-style:italic;}
.num,.tabular{font-variant-numeric:tabular-nums;}

/* ============ SKIP LINK ============ */
.skip-link{
  position:absolute;
  top:-48px;
  left:16px;
  z-index:1000;
  background:var(--mint);
  color:var(--navy);
  font-weight:600;
  font-size:14px;
  padding:12px 20px;
  border-radius:4px;
  text-decoration:none;
  transition:top .2s ease;
}
.skip-link:focus{top:16px;}

/* ============ FOCUS STATES ============ */
a:focus-visible,button:focus-visible,input:focus-visible,[tabindex]:focus-visible,summary:focus-visible{
  outline:2px solid var(--mint);
  outline-offset:3px;
  border-radius:4px;
}

/* ============ SCROLL PROGRESS ============ */
#prog{
  position:fixed;
  top:0;left:0;
  height:2px;
  background:var(--mint);
  width:0;
  z-index:200;
  transition:width .08s linear;
}
@media(prefers-reduced-motion:reduce){#prog{transition:none;}}

/* ============ NAV ============ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:150;
  display:flex;align-items:center;justify-content:space-between;
  padding:22px 48px;
  background:rgba(10,18,38,0.6);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,0.07);
}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;}
.logo-mark{width:28px;height:28px;background:var(--white);position:relative;border-radius:2px;flex:none;}
.logo-mark::before,.logo-mark::after{content:'';position:absolute;background:var(--navy);left:50%;top:50%;transform:translate(-50%,-50%);}
.logo-mark::before{width:16px;height:2px;}
.logo-mark::after{width:2px;height:16px;}
.logo-text{font-weight:700;font-size:18px;letter-spacing:-0.03em;color:var(--white);}

.nav-r{display:flex;gap:32px;align-items:center;font-size:14px;font-weight:500;}
.nav-links{display:flex;gap:32px;align-items:center;}
.nav-r a{text-decoration:none;color:var(--body);transition:color .2s;}
.nav-r a:hover{color:var(--white);}
.nav-r a[aria-current="page"]{color:var(--white);}
.nav-cta{padding:10px 20px;background:var(--mint);color:var(--navy)!important;border-radius:4px;font-weight:600;text-decoration:none;transition:background .2s,color .2s;}
.nav-cta:hover{background:var(--emerald-bright);color:var(--white)!important;}

.nav-burger{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  background:transparent;border:1px solid rgba(255,255,255,0.2);
  border-radius:4px;
  cursor:pointer;
  flex:none;
}
.nav-burger span{display:block;width:20px;height:2px;background:var(--white);position:relative;}
.nav-burger span::before,.nav-burger span::after{content:'';position:absolute;left:0;width:20px;height:2px;background:var(--white);transition:transform .2s ease;}
.nav-burger span::before{top:-6px;}
.nav-burger span::after{top:6px;}
.nav-burger[aria-expanded="true"] span{background:transparent;}
.nav-burger[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg);}
.nav-burger[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg);}

/* Mobile sheet: solid, self-scrolling, large tap targets */
.nav-sheet{
  position:fixed;
  top:64px;left:0;right:0;
  background:#0A1226;
  opacity:1;
  max-height:calc(100vh - 64px);
  overflow:auto;
  border-top:1px solid rgba(255,255,255,0.08);
  display:none;
  flex-direction:column;
  padding:12px 24px 32px;
  z-index:149;
}
.nav-sheet.open{display:flex;}
.nav-sheet a{
  display:block;
  padding:16px 4px;
  font-size:17px;
  font-weight:500;
  color:var(--white);
  text-decoration:none;
  border-bottom:1px solid rgba(255,255,255,0.08);
}
.nav-sheet a:last-child{border-bottom:0;}
.nav-sheet a.nav-cta{
  text-align:center;
  margin-top:16px;
  color:var(--navy)!important;
  border-bottom:0;
}

@media(max-width:860px){
  .nav{padding:16px 20px;}
  .nav-links{display:none;}
  .nav-r .nav-cta{display:none;}
  .nav-burger{display:flex;}
}

/* ============ LAYOUT / WRAP ============ */
.wrap{max-width:1240px;margin:0 auto;padding:0 40px;}
main{position:relative;z-index:1;}
section.block{padding:130px 0;position:relative;}
@media(max-width:760px){
  .wrap{padding:0 24px;}
  section.block{padding:90px 0;}
}
.veil{background:rgba(10,18,38,0.82);backdrop-filter:blur(6px);border-top:1px solid rgba(255,255,255,0.06);border-bottom:1px solid rgba(255,255,255,0.06);}
.on-navy{background:var(--navy);}
.on-card{background:var(--card);}

/* ============ KICKER ============ */
.k{
  font-size:11px;font-weight:600;letter-spacing:0.18em;text-transform:uppercase;
  color:var(--mint);margin-bottom:22px;
  display:inline-flex;align-items:center;gap:12px;
}
.k::before{content:'';width:28px;height:1px;background:var(--mint);}

/* ============ HEADINGS / LEDE ============ */
h2{font-size:clamp(32px,4.4vw,62px);line-height:1.06;color:var(--white);max-width:900px;margin-bottom:24px;}
h2 em{font-style:italic;color:var(--mint);}
h3{font-size:21px;font-weight:700;letter-spacing:-0.02em;color:var(--white);}
.lede{font-size:clamp(18px,1.35vw,21px);color:var(--body);max-width:700px;line-height:1.65;}
.lede strong{color:var(--white);font-weight:600;}

/* ============ EYEBROW (hero-scoped kicker) ============ */
.eyebrow{
  display:inline-flex;align-items:center;gap:12px;
  font-size:12px;font-weight:600;letter-spacing:0.18em;text-transform:uppercase;
  color:var(--mint);margin-bottom:32px;
}
.eyebrow::before,.eyebrow::after{content:'';width:28px;height:1px;background:var(--mint);}

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:15px 28px;
  background:var(--mint);color:var(--navy);
  border-radius:4px;
  font-weight:600;font-size:15px;
  text-decoration:none;
  border:1px solid var(--mint);
  transition:background .2s,transform .2s,color .2s,border-color .2s;
  cursor:pointer;
}
.btn:hover{background:var(--emerald-bright);border-color:var(--emerald-bright);color:var(--white);transform:translateY(-2px);}
.btn.ghost{background:rgba(10,18,38,0.4);color:var(--white);border-color:rgba(255,255,255,0.28);}
.btn.ghost:hover{background:var(--white);color:var(--navy);border-color:var(--white);}
@media(prefers-reduced-motion:reduce){.btn{transition:background .01s,color .01s,border-color .01s;}.btn:hover{transform:none;}}

/* ============ CARD PANELS ============ */
.card{
  background:var(--card);
  border:1px solid var(--edge);
  border-radius:4px;
  padding:32px;
  transition:border-color .3s,transform .3s;
}
.card:hover{border-color:var(--mint);}

/* ============ STAT CELLS ============ */
.stat4{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:rgba(255,255,255,0.09);
  border:1px solid rgba(255,255,255,0.09);
  margin-top:64px;
  border-radius:4px;overflow:hidden;
}
.s-cell{background:var(--navy);padding:40px 32px;}
.s-num{font-size:clamp(38px,4vw,60px);font-weight:700;letter-spacing:-0.045em;color:var(--white);line-height:1;font-variant-numeric:tabular-nums;margin-bottom:12px;}
.s-num .u{color:var(--mint);}
.s-lbl{font-size:15px;color:var(--body);line-height:1.55;}
.s-lbl b{color:var(--white);font-weight:600;}
.s-src{display:block;margin-top:10px;font-size:10.5px;letter-spacing:0.08em;text-transform:uppercase;color:var(--dim);}
@media(max-width:960px){.stat4{grid-template-columns:1fr 1fr;}}
@media(max-width:560px){.stat4{grid-template-columns:1fr;}}

/* ============ REVEALS ============ */
.rv{opacity:0;transform:translateY(28px);transition:opacity .8s cubic-bezier(.2,.6,.2,1),transform .8s cubic-bezier(.2,.6,.2,1);}
.rv.on{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){
  .rv{opacity:1;transform:none;transition:none;}
}

/* ============ CLOSING BAND ============ */
.closing{text-align:center;padding:160px 32px;}
.closing h2{margin:0 auto 22px;}
.closing p{font-size:19px;color:var(--body);max-width:580px;margin:0 auto 40px;line-height:1.65;}
@media(max-width:760px){.closing{padding:100px 24px;}}

/* ============ FOOTER ============ */
.footer{
  position:relative;z-index:1;
  background:var(--ink);
  color:var(--dim);
  padding:72px 48px 40px;
  font-size:14px;
  border-top:1px solid rgba(255,255,255,0.07);
}
.f-in{max-width:1240px;margin:0 auto;}
.f-top{display:flex;justify-content:space-between;gap:48px;flex-wrap:wrap;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,0.08);}
.f-cols{display:flex;gap:56px;flex-wrap:wrap;}
.f-col{display:flex;flex-direction:column;gap:12px;min-width:140px;}
.f-col-h{font-size:11px;font-weight:600;letter-spacing:0.14em;text-transform:uppercase;color:var(--dim);margin-bottom:4px;}
.f-col a{color:var(--body);text-decoration:none;font-size:14px;}
.f-col a:hover{color:var(--mint);}
.f-links{display:flex;gap:36px;flex-wrap:wrap;}
.f-links a{color:var(--body);text-decoration:none;}
.f-links a:hover{color:var(--mint);}
.f-disc{margin-top:34px;font-size:12.5px;line-height:1.7;color:#6d7890;max-width:880px;}
.f-bot{margin-top:26px;font-size:12px;letter-spacing:0.04em;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;}
@media(max-width:760px){
  .footer{padding:56px 24px 32px;}
  .f-top{flex-direction:column;gap:32px;}
}

/* ============ FIELD / CONVERGE MOTIF CANVAS ============ */
.motif-canvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;}
.motif-host{position:relative;}

/* ============ ACCESSIBLE ACCORDION / TABS (base look, pages extend) ============ */
[role="tablist"]{display:flex;gap:8px;flex-wrap:wrap;}
[role="tab"]{
  background:transparent;
  border:1px solid var(--edge);
  color:var(--body);
  padding:10px 18px;
  border-radius:4px;
  font-size:14px;
  font-weight:600;
  cursor:pointer;
  transition:background .2s,color .2s,border-color .2s;
}
[role="tab"][aria-selected="true"]{background:var(--mint);color:var(--navy);border-color:var(--mint);}
[role="tab"]:hover{border-color:var(--mint);}

.acc-item{border-bottom:1px solid var(--edge);}
.acc-trigger{
  width:100%;text-align:left;
  background:transparent;border:0;
  color:var(--white);
  font-size:17px;font-weight:600;
  padding:22px 4px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  cursor:pointer;
}
.acc-trigger .acc-icon{flex:none;width:20px;height:20px;position:relative;}
.acc-trigger .acc-icon::before,.acc-trigger .acc-icon::after{content:'';position:absolute;background:var(--mint);left:50%;top:50%;transform:translate(-50%,-50%);}
.acc-trigger .acc-icon::before{width:14px;height:2px;}
.acc-trigger .acc-icon::after{width:2px;height:14px;transition:transform .2s ease;}
.acc-trigger[aria-expanded="true"] .acc-icon::after{transform:translate(-50%,-50%) scaleY(0);}
.acc-panel{padding:0 4px 22px;color:var(--body);font-size:16.5px;line-height:1.65;}
.acc-panel[hidden]{display:none;}

/* ============ SEGMENTED CONTROL (estimator pages) ============ */
.seg{display:inline-flex;background:var(--card);border:1px solid var(--edge);border-radius:4px;padding:4px;gap:4px;}
.seg button{background:transparent;border:0;color:var(--body);padding:10px 18px;border-radius:4px;font-size:14px;font-weight:600;cursor:pointer;transition:background .2s,color .2s;}
.seg button[aria-selected="true"]{background:var(--mint);color:var(--navy);}