:root{
  --paper:#F2F4F3;
  --paper-2:#E9EDEB;
  --ink:#16201E;
  --muted:#5A6663;
  --teal:#42CBC0;
  --teal-deep:#1E8F88;
  --line:#C9D2CF;
  /* surfaces that were hard-coded #fff — now theme-aware */
  --elevate:#ffffff;        /* lifted surface: card / list hover */
  --input-bg:#ffffff;
  --nav-bg:rgba(242,244,243,.86);
  /* the hero contour motif */
  --contour:#42CBC0;
  --contour-dot:#1E8F88;
  /* text that always sits on a teal fill (buttons, tags) — stays dark */
  --on-teal:#0F1716;
  --error:#C0392B;
  --maxw:1180px;
  --disp:"Space Grotesk", sans-serif;
  --body:"Newsreader", Georgia, serif;
  --mono:"Space Mono", ui-monospace, monospace;
  color-scheme:light;
}

/* ---------- dark palette (co-equal to light) ---------- */
[data-theme="dark"]{
  --paper:#0F1716;
  --paper-2:#16201E;
  --ink:#EAF0EE;
  --muted:#94A39F;
  --teal:#42CBC0;
  --teal-deep:#5AD2C7;      /* lifted for link contrast on dark */
  --line:#2A3431;
  --elevate:#1B2624;
  --input-bg:#16201E;
  --nav-bg:rgba(15,23,22,.86);
  --contour:#42CBC0;
  --contour-dot:#2EA89F;
  --error:#E07070;
  color-scheme:dark;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--body);
  font-size:18px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  transition:background .2s ease, color .2s ease;
}
a{color:var(--teal-deep);text-decoration:none;}
a:hover{text-decoration:underline;text-underline-offset:3px;}
img{max-width:100%;display:block;}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px;}

/* ---------- type ---------- */
.eyebrow{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--teal-deep);
  margin:0 0 18px;
}
h1,h2,h3{font-family:var(--disp);font-weight:600;line-height:1.05;letter-spacing:-0.01em;margin:0;}
h1{font-size:clamp(38px,6vw,72px);}
h2{font-size:clamp(28px,3.6vw,40px);}
h3{font-size:21px;letter-spacing:0;}
.lede{font-size:clamp(19px,2.2vw,23px);color:var(--ink);max-width:46ch;}
.coord{font-family:var(--mono);font-size:12.5px;letter-spacing:.04em;color:var(--muted);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--disp);font-weight:600;font-size:15px;
  padding:13px 22px;border-radius:2px;border:1.5px solid var(--ink);
  cursor:pointer;background:transparent;color:var(--ink);
  transition:transform .15s ease, background .15s ease, color .15s ease;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--teal);border-color:var(--teal);color:var(--on-teal);}
.btn-primary:hover{background:var(--ink);border-color:var(--ink);color:var(--paper);}
.btn-ghost:hover{background:var(--ink);color:var(--paper);}
@media (prefers-reduced-motion: no-preference){
  .btn:active{transform:translateY(1px);}
}

/* ---------- nav ---------- */
header.nav{
  position:sticky;top:0;z-index:1000;
  background:var(--nav-bg);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px;}
.brand{display:flex;align-items:center;gap:12px;margin-right:auto;font-family:var(--disp);font-weight:700;font-size:18px;letter-spacing:.02em;color:var(--ink);cursor:pointer;}
.brand:hover{text-decoration:none;}
.brand .mark{
  width:38px;height:22px;flex:0 0 auto;
  background:url("/vt-mark.svg") left center/contain no-repeat;
}
nav.links{display:flex;align-items:center;gap:6px;}
nav.links a{
  font-family:var(--disp);font-weight:500;font-size:15px;color:var(--ink);
  padding:8px 14px;border-radius:2px;position:relative;
}
nav.links a:hover{text-decoration:none;background:var(--paper-2);}
nav.links a.active{color:var(--teal-deep);}
nav.links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--teal);
}
.navtoggle{display:none;background:none;border:1.5px solid var(--ink);border-radius:2px;padding:7px 10px;cursor:pointer;font-family:var(--mono);font-size:13px;color:var(--ink);}

@media (max-width:720px){
  .navtoggle{display:block;}
  nav.links{
    position:absolute;top:64px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--paper);border-bottom:1px solid var(--line);
    max-height:0;overflow:hidden;transition:max-height .25s ease;
  }
  nav.links.open{max-height:320px;}
  nav.links a{padding:16px 28px;border-top:1px solid var(--line);}
  nav.links a.active::after{display:none;}
}

/* ---------- page load ---------- */
@media (prefers-reduced-motion: no-preference){
  main{animation:fade .4s ease;}
  @keyframes fade{from{opacity:0;transform:translateY(6px);}to{opacity:1;transform:none;}}
}
section{padding:70px 0;}
.sec-tight{padding:48px 0;}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:96px 0 84px;border-bottom:1px solid var(--line);}
.hero .contours{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;opacity:.55;}
.hero-inner{position:relative;z-index:2;}
.hero h1{max-width:16ch;margin-bottom:26px;}
.hero .lede{margin-bottom:34px;}
.hero .hero-sub{font-size:clamp(16px,1.8vw,19px);color:var(--muted);max-width:52ch;margin:0 0 34px;line-height:1.55;}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- featured strip ---------- */
.strip-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:28px;flex-wrap:wrap;}
.cardgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);}
.placecard{
  background:var(--paper);padding:26px 24px 24px;cursor:pointer;
  transition:background .18s ease;display:flex;flex-direction:column;gap:12px;min-height:200px;
  text-decoration:none;color:inherit;
}
a.placecard:hover{text-decoration:none;background:var(--elevate);}
.placecard:hover{background:var(--elevate);}
.placecard .top{display:flex;align-items:center;justify-content:space-between;gap:10px;}
.tag{font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;padding:4px 9px;border-radius:2px;white-space:nowrap;}
.placecard h3{font-family:var(--disp);}
.placecard p{margin:0;font-size:16px;color:var(--muted);line-height:1.5;flex:1;}
.placecard .foot{display:flex;align-items:center;justify-content:space-between;gap:10px;}
.placecard .go{font-family:var(--disp);font-weight:600;font-size:14px;color:var(--teal-deep);}

/* ---------- map page ---------- */
.maplayout{display:grid;grid-template-columns:340px 1fr;gap:0;border:1px solid var(--line);min-height:560px;}
.maplist{border-right:1px solid var(--line);overflow:auto;max-height:600px;background:var(--paper);}
.maplist .item{padding:18px 22px;border-bottom:1px solid var(--line);cursor:pointer;transition:background .15s ease;}
.maplist .item:hover{background:var(--elevate);}
.maplist .item.sel{background:var(--elevate);box-shadow:inset 3px 0 0 var(--teal);}
.maplist .item h3{font-family:var(--disp);font-size:18px;margin-bottom:5px;}
.maplist .item .meta{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:8px;}
#map{width:100%;height:600px;background:var(--paper-2);}
.leaflet-container{font-family:var(--mono);}
.leaflet-popup-content{font-family:var(--body);margin:14px 16px;}
.leaflet-popup-content h3{font-family:var(--disp);font-size:17px;margin-bottom:6px;}
.leaflet-popup-content p{margin:0 0 10px;font-size:14.5px;color:var(--muted);line-height:1.5;}
.leaflet-popup-content a{font-family:var(--disp);font-weight:600;font-size:14px;}

@media (max-width:820px){
  .maplayout{grid-template-columns:1fr;}
  .maplist{max-height:none;border-right:none;border-bottom:1px solid var(--line);}
  #map{height:420px;}
}

/* ---------- about ---------- */
.prose{max-width:62ch;}
.prose p{margin:0 0 22px;}
.prose ul{margin:0 0 22px;padding-left:1.15em;}
.prose li{margin:0 0 9px;line-height:1.55;}
.prose li::marker{color:var(--teal-deep);}
.contactform-wrap{max-width:60ch;margin-top:10px;padding-top:34px;border-top:1px solid var(--line);}
.twocol{display:grid;grid-template-columns:1fr 300px;gap:54px;align-items:start;}
.sidecard{border:1px solid var(--line);padding:26px;background:var(--paper);}
.sidecard h3{font-family:var(--disp);font-size:14px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:16px;}
.sidecard .row{display:flex;justify-content:space-between;padding:10px 0;border-top:1px solid var(--line);font-size:15px;}
.sidecard .row:first-of-type{border-top:none;}
.sidecard .row span:first-child{color:var(--muted);}
@media (max-width:760px){.twocol{grid-template-columns:1fr;gap:32px;}}

/* ---------- contact ---------- */
.contactgrid{display:grid;grid-template-columns:1fr 1.3fr;gap:54px;align-items:start;}
@media (max-width:760px){.contactgrid{grid-template-columns:1fr;gap:36px;}}
.field{margin-bottom:18px;}
.field label{display:block;font-family:var(--disp);font-weight:500;font-size:14px;margin-bottom:7px;}
.field input,.field select,.field textarea{
  width:100%;font-family:var(--body);font-size:16px;color:var(--ink);
  padding:12px 13px;border:1.5px solid var(--line);border-radius:2px;background:var(--input-bg);
}
.field textarea{min-height:130px;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--teal-deep);}
.field.error input,.field.error select,.field.error textarea{border-color:var(--error);}
.formnote{font-family:var(--mono);font-size:12.5px;color:var(--muted);margin-top:6px;}
.sent{display:none;margin-top:16px;padding:12px 14px;border:1.5px solid var(--teal);background:rgba(66,203,192,.12);font-size:15px;border-radius:2px;}
.sent.show{display:block;}
.form-error{display:none;margin-top:12px;padding:10px 14px;border:1.5px solid var(--error);background:rgba(192,57,43,.08);color:var(--error);font-size:15px;border-radius:2px;}
.form-error.show{display:block;}
.cluster-icon{width:40px;height:40px;border-radius:50%;background:#42CBC0;border:2px solid #16201E;color:#0F1716;font-family:var(--disp);font-weight:600;font-size:14px;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 1px 5px rgba(0,0,0,.25);}
[data-theme="dark"] .cluster-icon{border-color:#0C1413;color:#0C1413;}
.directbox{border:1px solid var(--line);padding:26px;background:var(--paper);}
.directbox .email{font-family:var(--mono);font-size:15px;color:var(--ink);margin-top:6px;word-break:break-all;}

/* ---------- corrections ---------- */
.howto{max-width:64ch;scroll-margin-top:90px;}
.howto ul{margin:16px 0 0;padding-left:1.15em;}
.howto li{margin:0 0 9px;font-size:16.5px;line-height:1.55;}
.howto li::marker{color:var(--teal-deep);}
.corr-head{margin:0 0 40px;}
.corr-head .sub{font-family:var(--disp);font-size:clamp(20px,2.4vw,26px);font-weight:600;margin:0;}
.corr{border-top:1px solid var(--line);padding:26px 0;}
.corr:last-child{border-bottom:1px solid var(--line);}
.corr .vid{font-family:var(--disp);font-weight:600;font-size:19px;display:inline-block;margin-bottom:5px;color:var(--ink);}
.corr a.vid:hover{color:var(--teal-deep);text-decoration:underline;text-underline-offset:3px;}
.corr .when{font-family:var(--mono);font-size:12.5px;letter-spacing:.04em;color:var(--muted);display:block;margin-bottom:14px;}
.corr p{margin:0 0 12px;font-size:16.5px;line-height:1.6;}
.corr .by{font-family:var(--mono);font-size:12.5px;letter-spacing:.04em;color:var(--muted);margin-bottom:0;}

/* ---------- links (hidden linktree) ---------- */
.linktree{max-width:420px;margin:0 auto;text-align:center;padding:30px 0 10px;}
.linktree .mark-lg{width:104px;height:60px;margin:0 auto 22px;background:url("/vt-mark.svg") center/contain no-repeat;}
.linktree h2{margin-bottom:6px;}
.linktree .tl-sub{color:var(--muted);font-size:16px;margin:0 0 28px;}
.linktree .ll{
  display:flex;align-items:center;justify-content:space-between;
  border:1.5px solid var(--ink);border-radius:2px;padding:15px 20px;margin-bottom:12px;
  font-family:var(--disp);font-weight:600;font-size:16px;color:var(--ink);
  transition:background .15s ease,color .15s ease;
}
.linktree .ll:hover{background:var(--ink);color:var(--paper);text-decoration:none;}
.linktree .ll .arr{font-family:var(--mono);font-weight:400;}

/* ---------- footer ---------- */
footer.site{border-top:1px solid var(--line);background:var(--paper-2);padding:48px 0 40px;margin-top:40px;}
.foot-grid{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;}
.foot-grid .col h4{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin:0 0 14px;}
.foot-grid .col a{display:block;color:var(--ink);font-size:15px;padding:4px 0;}
.foot-bottom{margin-top:36px;padding-top:20px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.foot-bottom .coord{color:var(--muted);}

.section-label{display:flex;align-items:center;gap:14px;margin-bottom:10px;}
.section-label .ln{flex:1;height:1px;background:var(--line);}

:focus-visible{outline:2px solid var(--teal-deep);outline-offset:2px;}

/* ============================================================
   ADDITIONS — dark mode, theme toggle, map detail panel
   ============================================================ */

/* ---------- hero contour motif (theme-aware) ----------
   CSS wins over the SVG presentation attributes, so the motif
   re-colours with the palette instead of being baked light. */
.hero .contours path{stroke:var(--contour);}
.hero .contours circle{stroke:var(--contour-dot);fill:var(--contour-dot);}
[data-theme="dark"] .hero .contours{opacity:.7;}

/* ---------- theme toggle ---------- */
.themetoggle{
  display:grid;place-items:center;
  width:38px;height:38px;margin-left:6px;flex:0 0 auto;
  background:transparent;border:1.5px solid var(--line);border-radius:2px;
  color:var(--ink);cursor:pointer;
  transition:background .15s ease,border-color .15s ease;
}
.themetoggle:hover{background:var(--paper-2);border-color:var(--ink);}
.themetoggle svg{width:18px;height:18px;display:block;}
.themetoggle .i-sun{display:none;}
.themetoggle .i-moon{display:block;}
[data-theme="dark"] .themetoggle .i-sun{display:block;}
[data-theme="dark"] .themetoggle .i-moon{display:none;}
@media (max-width:720px){
  /* keep the toggle on the bar next to the menu button on mobile */
  .themetoggle{order:2;}
  .navtoggle{order:3;}
}

/* ---------- map full-frame (no sidebar list) ---------- */
.mapframe{border:1px solid var(--line);overflow:hidden;}

/* ---------- map detail panel (replaces popup) ---------- */
#detail-backdrop{
  position:fixed;inset:0;z-index:1400;
  background:rgba(8,12,11,.42);backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
#detail-backdrop.show{opacity:1;visibility:visible;}
#detail{
  position:fixed;top:0;left:0;bottom:0;z-index:1500;
  width:min(440px,100%);
  background:var(--paper);border-right:1px solid var(--line);
  box-shadow:18px 0 50px rgba(8,12,11,.18);
  transform:translateX(-100%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;
  overscroll-behavior:contain;
}
#detail.open{transform:translateX(0);}
.detail-topbar{
  display:flex;justify-content:flex-end;align-items:center;
  padding:14px 16px;border-bottom:1px solid var(--line);flex:0 0 auto;
}
.detail-close{
  background:transparent;border:1.5px solid var(--line);border-radius:2px;
  width:34px;height:34px;display:grid;place-items:center;cursor:pointer;
  font-family:var(--mono);font-size:16px;color:var(--ink);line-height:1;
}
.detail-close:hover{background:var(--paper-2);border-color:var(--ink);}
#detail-body{padding:24px 26px 36px;overflow:auto;flex:1;}
.detail-head{margin-bottom:18px;}
.detail-head h2{font-size:clamp(24px,3vw,30px);margin:8px 0 12px;}
.detail-meta{display:flex;gap:10px;align-items:center;flex-wrap:wrap;}
.detail-video{
  position:relative;aspect-ratio:16/9;margin:0 0 20px;
  background:var(--paper-2);border:1px solid var(--line);border-radius:2px;overflow:hidden;
}
.detail-video iframe{position:absolute;inset:0;width:100%;height:100%;border:0;}
.detail-blurb{font-size:17px;line-height:1.6;margin:0 0 22px;}
.detail-watch{margin-bottom:8px;}
@media (prefers-reduced-motion: reduce){
  #detail{transition:none;}
  #detail-backdrop{transition:none;}
}

/* footer tagline (replaces the old coordinates / built-in-the-open strip) */
.foot-tag{
  font-family:var(--mono);font-size:12.5px;letter-spacing:.18em;
  color:var(--muted);margin:0;
}

/* home: recent-videos pager */
.cardnav{display:flex;align-items:center;justify-content:flex-end;gap:12px;margin-top:22px;}
.cardnav .pageof{font-family:var(--mono);font-size:12.5px;letter-spacing:.04em;color:var(--muted);}
.pgbtn{
  display:grid;place-items:center;width:38px;height:38px;flex:0 0 auto;
  background:transparent;border:1.5px solid var(--line);border-radius:2px;
  color:var(--ink);cursor:pointer;font-family:var(--mono);font-size:16px;line-height:1;
  transition:background .15s ease,border-color .15s ease,opacity .15s ease;
}
.pgbtn:hover:not(:disabled){background:var(--paper-2);border-color:var(--ink);}
.pgbtn:disabled{opacity:.35;cursor:default;}

/* links page: grouped sections, plain rows */
.linktree .group{
  font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);text-align:left;margin:30px 0 12px;
}
.linktree .group:first-of-type{margin-top:10px;}
.linktree .ll{justify-content:center;}