/* =========================================================
   style.css — SHARED across every calculator page
   Contains: design tokens, base styles, site header, site footer
   Page-specific styles (panels, statement, charts) live in calculator.css
   ========================================================= */

:root{
  --ink:#16233d;
  --paper:#eef2ec;
  --card:#fbfbf8;
  --emerald:#1f7a5c;
  --emerald-dim:#c9ded4;
  --amber:#c97a2e;
  --amber-text:#9a5514;
  --amber-dim:#f0dcc4;
  --line:#c7ccc2;
  --muted:#5b6660;
  --radius:3px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'Inter', sans-serif;
  min-height:100vh;
}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important; transition-duration:.001ms !important;}
}

a{color:inherit;}

/* ---------- Site header ---------- */
.site-header{
  background:var(--ink);
  color:var(--card);
}
.site-header-inner{
  max-width:1080px;
  margin:0 auto;
  padding:0 28px;
  height:68px;
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.logo{
  font-family:'Space Grotesk', sans-serif;
  font-size:19px;
  font-weight:700;
  letter-spacing:-.01em;
  text-decoration:none;
  display:flex;
  align-items:baseline;
  gap:2px;
}
.logo .dot{color:var(--emerald);}
.logo .subtag{
  font-family:'IBM Plex Mono', monospace;
  font-size:10.5px;
  font-weight:600;
  letter-spacing:.06em;
  text-transform:uppercase;
  color:var(--emerald);
  background:rgba(31,122,92,.18);
  border:1px solid rgba(31,122,92,.4);
  padding:3px 8px;
  border-radius:20px;
  margin-left:9px;
  vertical-align:middle;
}
.footer-brand .logo .subtag{margin-left:8px;}

nav.main-nav{
  display:flex;
  align-items:center;
  gap:32px;
}
.nav-toggle{display:none;}

.nav-dropdown{position:relative;}
.nav-dropdown-toggle{
  background:none;
  border:none;
  color:#dbe1ea;
  font-family:'Inter', sans-serif;
  font-size:13.5px;
  font-weight:500;
  cursor:pointer;
  display:flex;
  align-items:center;
  gap:6px;
  padding:8px 0;
}
.nav-dropdown-toggle:hover, .nav-dropdown-toggle:focus-visible{color:var(--card);}
.nav-dropdown-toggle .caret{font-size:10px; transition:transform .15s ease;}
.nav-dropdown:hover .caret, .nav-dropdown.force-open .caret{transform:rotate(180deg);}

.nav-dropdown-menu{
  position:absolute;
  top:calc(100% + 10px);
  left:50%;
  transform:translateX(-50%) translateY(-6px);
  background:var(--card);
  border:1px solid var(--line);
  border-radius:8px;
  padding:6px;
  min-width:180px;
  box-shadow:0 12px 30px rgba(0,0,0,.18);
  opacity:0;
  pointer-events:none;
  transition:opacity .15s ease, transform .15s ease;
  z-index:20;
}
.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu,
.nav-dropdown.force-open .nav-dropdown-menu{
  opacity:1;
  pointer-events:auto;
  transform:translateX(-50%) translateY(0);
}
/* Dropdown link states — solid, high-contrast (fixes low-visibility default/hover states) */
.nav-dropdown-menu a{
  display:block;
  padding:10px 12px;
  border-radius:5px;
  font-size:13.5px;
  font-weight:500;
  color:var(--ink);
  text-decoration:none;
  transition:background .12s ease, color .12s ease;
}
.nav-dropdown-menu a:hover,
.nav-dropdown-menu a:focus-visible{
  background:var(--emerald-dim);
  color:var(--ink);
}
.nav-dropdown-menu a.active{
  background:var(--emerald);
  color:#ffffff;
  font-weight:600;
}

@media (max-width:720px){
  nav.main-nav{
    position:fixed;
    inset:68px 0 auto 0;
    background:var(--ink);
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    padding:8px 28px 20px;
    transform:translateY(-8px);
    opacity:0;
    pointer-events:none;
    transition:.18s ease;
    border-bottom:1px solid #263657;
  }
  nav.main-nav.open{opacity:1; transform:translateY(0); pointer-events:auto;}
  .nav-dropdown{width:100%;}
  .nav-dropdown-toggle{width:100%; padding:12px 0; border-bottom:1px solid #263657;}
  .nav-dropdown-menu{
    position:static;
    transform:none;
    opacity:1;
    pointer-events:auto;
    box-shadow:none;
    border:none;
    background:transparent;
    padding:4px 0 6px 8px;
    min-width:0;
  }
  .nav-dropdown-menu a{color:#dbe1ea; padding:10px 12px;}
  .nav-dropdown-menu a:hover{background:rgba(255,255,255,.08); color:var(--card);}
  .nav-dropdown-menu a.active{background:var(--emerald); color:#fff;}
  .nav-toggle{
    display:block;
    background:none;
    border:none;
    color:var(--card);
    font-size:22px;
    cursor:pointer;
    line-height:1;
    padding:4px;
  }
}

/* ---------- Site footer ---------- */
.site-footer{
  background:var(--ink);
  color:#aab4c4;
  margin-top:64px;
}
.site-footer-inner{
  max-width:1080px;
  margin:0 auto;
  padding:44px 28px 28px;
}
.footer-top{
  display:grid;
  grid-template-columns:1.6fr 1fr;
  gap:32px;
  padding-bottom:32px;
  border-bottom:1px solid #263657;
}
@media (max-width:720px){
  .footer-top{grid-template-columns:1fr;}
}
.footer-brand .logo{color:var(--card); margin-bottom:12px; display:inline-flex;}
.footer-brand p{
  font-size:13px;
  line-height:1.6;
  color:#8b96aa;
  max-width:260px;
  margin:0;
}
.footer-col h4{
  font-family:'IBM Plex Mono', monospace;
  font-size:11px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:#6b7690;
  margin:0 0 14px;
  font-weight:600;
}
.footer-col ul{
  list-style:none;
  margin:0; padding:0;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-col a{
  font-size:13.5px;
  text-decoration:none;
  color:#c7cfda;
  transition:color .15s ease;
}
.footer-col a:hover{color:var(--card);}
.footer-col a.active{color:var(--emerald-dim); font-weight:600;}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding-top:22px;
  font-size:12px;
  color:#6b7690;
  font-family:'IBM Plex Mono', monospace;
  flex-wrap:wrap;
  gap:10px;
}
.footer-bottom a{color:#8b96aa; text-decoration:none;}
.footer-bottom a:hover{color:var(--card);}

::selection{background:var(--emerald-dim);}