/* AI History Battle — mobile-first; students are on phones at an event.
 *
 * The visual language comes from the cards themselves: cream paper, engraved
 * line, etched serif capitals, hairline rules, strict monochrome. No rounded
 * corners, no coloured status panels — a win reads by weight and rule, the way
 * a printed standings table does.
 */
:root{
  --paper:#f2efe7; --card:#faf8f2; --ink:#1a1713; --ink2:#5c554a; --ink3:#8d8577;
  --rule:#cec7b8; --rule2:#e3ddd0;
  --accent:#6b2027;              /* oxblood; used sparingly, never as fill */
  --gold:#8a6a1f;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,"Book Antiqua",Georgia,serif;
  --sans:ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;
}
@media (prefers-color-scheme:dark){
  :root{
    --paper:#12110e; --card:#1a1814; --ink:#eae5d9; --ink2:#a49c8c; --ink3:#736c5f;
    --rule:#38332a; --rule2:#26221c;
    --accent:#c2757c; --gold:#c39a44;
  }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);
  font:16px/1.6 var(--serif);
  background-image:radial-gradient(circle at 1px 1px,
    color-mix(in srgb,var(--ink) 4%,transparent) 1px,transparent 0);
  background-size:4px 4px}
a{color:inherit}
main{max-width:760px;margin:0 auto;padding:20px 18px 80px}
html,body{overflow-x:hidden;max-width:100vw}

h1{font-size:clamp(25px,6.4vw,36px);line-height:1.12;margin:0 0 8px;
   font-weight:600;letter-spacing:.005em;text-wrap:balance}
h2{font-family:var(--sans);font-size:11px;font-weight:700;letter-spacing:.16em;
   text-transform:uppercase;color:var(--ink3);margin:34px 0 12px;
   padding-bottom:6px;border-bottom:1px solid var(--rule)}
h3{font-size:17px;font-weight:600;margin:20px 0 6px}
p{margin:0 0 13px}
.muted{color:var(--ink2)}
.small{font-size:14px}
.tiny{font-family:var(--sans);font-size:12px;color:var(--ink3);line-height:1.5}

/* ---------- chrome ---------- */
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:baseline;gap:14px;
  padding:12px 18px;background:color-mix(in srgb,var(--paper) 94%,transparent);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--rule);flex-wrap:wrap}
.brand{text-decoration:none;font-size:15px;font-weight:600;letter-spacing:.09em;
  text-transform:uppercase}
.topbar nav{display:flex;gap:16px;margin-left:auto;font-family:var(--sans);
  font-size:11px;letter-spacing:.11em;text-transform:uppercase;
  flex-wrap:wrap;row-gap:5px}          /* must wrap: an unwrapped nav row is
  wider than a phone and horizontally widens the entire page */
.topbar nav a{text-decoration:none;color:var(--ink3);padding-bottom:2px;
  border-bottom:1px solid transparent}
.topbar nav a.on,.topbar nav a:hover{color:var(--ink);border-bottom-color:var(--ink)}
.topbar nav a.me{color:var(--accent)}
footer{max-width:760px;margin:0 auto;padding:26px 18px 44px;color:var(--ink3);
  font-family:var(--sans);font-size:12px;border-top:1px solid var(--rule2)}
.banner{background:var(--ink);color:var(--paper);padding:10px 18px;
  font-family:var(--sans);font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  text-align:center}
.banner.frozen{background:var(--accent)}

/* ---------- surfaces: rules, not boxes ---------- */
.card{background:var(--card);border:1px solid var(--rule2);padding:16px;margin-bottom:12px}
.card.tight{padding:12px}
.stack{display:flex;flex-direction:column;gap:12px}
.row{display:flex;gap:14px;align-items:center}
.row.wrap{flex-wrap:wrap}
.grow{flex:1;min-width:0}
.between{display:flex;justify-content:space-between;align-items:baseline;gap:10px}

/* ---------- portraits: show the whole card, never a cropped square ---------- */
.avatar{width:52px;aspect-ratio:3/4;height:auto;object-fit:cover;object-position:top center;
  background:var(--card);border:1px solid var(--rule);flex:none;border-radius:0}
.avatar.lg{width:100%;max-width:300px;aspect-ratio:3/4;object-fit:contain;
  background:transparent;border:0;
  filter:drop-shadow(0 2px 10px color-mix(in srgb,var(--ink) 16%,transparent))}
.avatar.sm{width:34px}
.avatar-ph{display:flex;align-items:center;justify-content:center;font-family:var(--sans);
  font-weight:700;color:var(--ink3);font-size:15px;letter-spacing:.05em}
.avatar.lg.avatar-ph{aspect-ratio:3/4;font-size:44px;border:1px solid var(--rule);
  background:var(--card)}
.portrait-wrap{display:flex;justify-content:center;margin:4px 0 18px}

.name{font-weight:600;letter-spacing:.005em}
.years{color:var(--ink3);font-family:var(--sans);font-size:12px;
  font-variant-numeric:tabular-nums}
.badge{display:inline-block;font-family:var(--sans);font-size:9.5px;letter-spacing:.13em;
  text-transform:uppercase;font-weight:700;padding:3px 7px;border:1px solid var(--rule);
  color:var(--ink2);background:transparent}
.badge.story{border-color:var(--gold);color:var(--gold)}
.badge.host{border-color:var(--accent);color:var(--accent)}

/* ---------- scores / battle: weight and rule, not colour ---------- */
.score{font-family:var(--sans);font-weight:700;font-variant-numeric:tabular-nums;
  letter-spacing:-.02em}
.side{padding:15px;border:1px solid var(--rule2);background:var(--card)}
.side.win{border-color:var(--ink);border-left:3px solid var(--ink)}
.side.lose{opacity:.72}
.side .score{font-size:31px}
.side.win .score{color:var(--ink)}
.side.lose .score{color:var(--ink3)}
.verdict{font-size:clamp(21px,5.5vw,28px);font-weight:600;margin:6px 0 2px;
  letter-spacing:.005em}
.verdict .w{border-bottom:2px solid var(--accent)}
.explain{font-size:15px;line-height:1.68;margin-top:11px;color:var(--ink2)}
.problem{background:var(--card);border:1px solid var(--rule2);
  border-left:3px solid var(--ink);padding:15px}
.axes span{display:inline-block;font-family:var(--sans);border:1px solid var(--rule2);
  color:var(--ink3);padding:2px 7px;margin:5px 5px 0 0;font-size:10.5px;
  letter-spacing:.06em;text-transform:uppercase}

/* ---------- lists: printed standings tables ---------- */
.list{border-top:1px solid var(--rule);background:transparent}
.list a,.list .item{display:flex;gap:13px;align-items:center;padding:11px 4px;
  text-decoration:none;border-bottom:1px solid var(--rule2)}
.list a:hover{background:color-mix(in srgb,var(--ink) 4%,transparent)}
.rank{width:28px;text-align:right;color:var(--ink3);font-family:var(--sans);
  font-variant-numeric:tabular-nums;font-size:13px;flex:none}
.wl{font-family:var(--sans);font-variant-numeric:tabular-nums;font-size:12.5px;
  color:var(--ink3);white-space:nowrap}
.wl b{color:var(--ink);font-weight:700}
.pill{font-family:var(--sans);font-size:10px;padding:2px 6px;border:1px solid var(--rule2);
  color:var(--ink3);letter-spacing:.08em;text-transform:uppercase}

/* ---------- forms ---------- */
input[type=text],input[type=url],input[type=password],input[type=tel]{
  width:100%;padding:12px 14px;font-size:16px;font-family:var(--serif);
  border:1px solid var(--rule);border-radius:0;background:var(--card);color:var(--ink)}
input:focus{outline:2px solid var(--ink);outline-offset:-2px}
.pin{font-family:var(--sans);font-size:30px;letter-spacing:.55em;text-align:center;
  font-variant-numeric:tabular-nums}
button,.btn{display:inline-block;padding:12px 20px;font-family:var(--sans);font-size:12px;
  font-weight:700;letter-spacing:.11em;text-transform:uppercase;border:1px solid var(--ink);
  border-radius:0;background:var(--ink);color:var(--paper);cursor:pointer;
  text-decoration:none;text-align:center}
button:hover,.btn:hover{background:transparent;color:var(--ink)}
button.ghost,.btn.ghost{background:transparent;color:var(--ink2);border-color:var(--rule)}
button:active{transform:translateY(1px)}
.err,.ok{font-family:var(--sans);font-size:13px;padding:10px 12px;margin-bottom:10px;
  border:1px solid var(--rule)}
.err{border-left:3px solid var(--accent);color:var(--ink)}

/* ---------- instrument choice ---------- */
.inst-option{display:block;position:relative;padding:14px 16px 14px 44px;
  border:1px solid var(--rule2);background:var(--card);cursor:pointer}
.inst-option input{position:absolute;left:16px;top:16px;margin:0;width:16px;height:16px}
.inst-option .inst-name{display:block;font-weight:700;font-size:15px}
.inst-option .inst-gloss{display:block;font-size:13px;color:var(--ink2);margin-top:3px;
  line-height:1.5}
.inst-option:has(input:checked){border-color:var(--ink);border-left:3px solid var(--ink)}
.instrument-form button{margin-top:4px}
.badge.hit{border-color:var(--ink);color:var(--ink)}
.badge.miss{border-color:var(--accent);color:var(--accent)}
.ok{border-left:3px solid var(--ink);color:var(--ink)}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(84px,1fr));gap:0;
  border-left:1px solid var(--rule2)}
.stat{background:transparent;border:0;border-right:1px solid var(--rule2);padding:12px 13px}
.stat b{display:block;font-family:var(--sans);font-size:23px;font-weight:700;
  font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.stat span{display:block;font-family:var(--sans);font-size:9.5px;color:var(--ink3);
  text-transform:uppercase;letter-spacing:.12em;margin-top:3px}

/* ---------- bio prose ---------- */
.prose{font-size:16px;line-height:1.72}
.prose h2{font-family:var(--sans);font-size:10.5px;margin:26px 0 9px;color:var(--ink3);
  border-bottom:1px solid var(--rule2)}
.prose p{margin:0 0 15px}

table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--rule2)}
th{font-family:var(--sans);font-size:10px;text-transform:uppercase;letter-spacing:.11em;
  color:var(--ink3);border-bottom:1px solid var(--rule)}
td{font-variant-numeric:tabular-nums}
.scroll{overflow-x:auto}
#cy{height:min(70vh,600px);background:var(--card);border:1px solid var(--rule)}

/* ---------- home ---------- */
.hero{padding:10px 0 6px;text-align:center;border-bottom:1px solid var(--rule);
  margin-bottom:22px;padding-bottom:22px}
.hero h1{font-size:clamp(30px,8.5vw,48px);line-height:1.04;margin:0 0 14px;
  font-weight:600;letter-spacing:.01em}
.hero .lede{color:var(--ink2);font-size:16px;max-width:52ch;margin:0 auto 16px}
.hero .cta{display:inline-block;border:1px solid var(--ink);color:var(--ink);
  padding:11px 18px;font-family:var(--sans);font-size:11.5px;font-weight:700;
  letter-spacing:.11em;text-transform:uppercase;text-decoration:none}
.hero .cta:hover{background:var(--ink);color:var(--paper)}

/* strip of cards on the home page — the deck, as an object */
.deck{display:flex;gap:10px;overflow-x:auto;padding:2px 0 12px;
  scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch}
.deck img{width:118px;flex:none;aspect-ratio:3/4;object-fit:contain;scroll-snap-align:start;
  filter:drop-shadow(0 2px 7px color-mix(in srgb,var(--ink) 14%,transparent))}

.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:0;
  border:1px solid var(--rule2)}
.tile{background:transparent;border:0;border-right:1px solid var(--rule2);
  border-bottom:1px solid var(--rule2);padding:15px;text-decoration:none;display:block}
.tile:hover{background:color-mix(in srgb,var(--ink) 4%,transparent)}
.tile b{display:block;font-family:var(--sans);font-size:24px;font-weight:700;
  letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.tile span{display:block;font-family:var(--sans);font-size:10px;color:var(--ink3);
  margin-top:3px;text-transform:uppercase;letter-spacing:.11em}

/* roster grid — the deck laid out */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:16px}
.grid a{text-decoration:none;display:block}
.grid img{width:100%;aspect-ratio:3/4;object-fit:contain;
  filter:drop-shadow(0 2px 7px color-mix(in srgb,var(--ink) 14%,transparent))}
.grid .cap{display:block;font-size:13px;margin-top:6px;line-height:1.3}
.grid .cap em{display:block;font-family:var(--sans);font-size:10px;color:var(--ink3);
  font-style:normal;letter-spacing:.06em}

/* ---------- mind map chips ---------- */
.chips{display:flex;flex-wrap:wrap;gap:7px}
.chip{display:inline-block;padding:5px 10px;font-family:var(--sans);font-size:11.5px;
  text-decoration:none;border:1px solid var(--rule);color:var(--ink2);
  letter-spacing:.04em}
.chip:hover{border-color:var(--ink);color:var(--ink)}
.chip::after{content:" ↗";font-size:9px;opacity:.5}
.chip.self{border-color:var(--accent);color:var(--accent)}


/* ---------- fresh-battle reveal ---------- */
.reveal-stage{display:none;text-align:center;padding:6px 0 18px}
body.countdown .reveal-stage{display:block}
.reveal-ring{position:relative;width:96px;height:96px;margin:0 auto;cursor:pointer}
.reveal-ring svg{width:96px;height:96px;transform:rotate(-90deg)}
.reveal-ring .track{fill:none;stroke:var(--rule2);stroke-width:6}
.reveal-ring .arc{fill:none;stroke:var(--ink);stroke-width:6;stroke-linecap:butt;
  transition:stroke-dashoffset 1s linear}
.reveal-ring span{position:absolute;inset:0;display:flex;align-items:center;
  justify-content:center;font-family:var(--sans);font-size:30px;font-weight:700;
  font-variant-numeric:tabular-nums}
.reveal-label{margin-top:10px;font-family:var(--sans);font-size:10.5px;
  letter-spacing:.14em;text-transform:uppercase;color:var(--ink3)}

/* while counting: outcome is invisible and both sides look equal */
body.countdown .verdict-wrap{visibility:hidden;height:0;overflow:hidden;margin:0}
body.countdown .side .score,
body.countdown .side .explain{visibility:hidden}
body.countdown .side.win{border-color:var(--rule2);border-left:1px solid var(--rule2)}
body.countdown .side.lose{opacity:1}
body.countdown .h2h-card{visibility:hidden}

/* the reveal itself */
body.revealed .verdict-wrap{animation:reveal-pop .6s cubic-bezier(.2,.9,.3,1.2) both}
body.revealed .side.win{animation:reveal-win .8s ease both}
@keyframes reveal-pop{from{opacity:0;transform:translateY(14px) scale(.96)}
  to{opacity:1;transform:none}}
@keyframes reveal-win{from{border-left-color:var(--rule2)}
  to{border-left-color:var(--ink)}}
@media (prefers-reduced-motion: reduce){
  body.revealed .verdict-wrap,body.revealed .side.win{animation:none}
}

/* player's own name, light, behind the figure they hold */
.player-tag{font-family:var(--sans);font-size:11px;color:var(--ink3);
  letter-spacing:.02em;margin-left:7px;white-space:nowrap}
.player-tag::before{content:"· "}