/* The Comparativist · POLS 140 study game */
html{color-scheme:light dark;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
[hidden]{display:none!important}
img{max-width:100%}
a.btn{text-decoration:none;display:inline-flex;align-items:center;gap:6px}
/* Layout: a passport. Four worlds are four pages; each level is a stamp slot; every answer gets stamped APPROVED or DENIED at the border. */
:root{
  --paper:#f4f5f1; --card:#fdfdfb; --ink:#161922; --muted:#5b6170; --line:#d3d6cc; --line-strong:#a9ada3;
  --accent:#2a3186; --accent-ink:#ffffff; --accent-soft:#e3e5f6;
  --ok:#1d6f47; --ok-soft:#dff0e5; --bad:#b1281f; --bad-soft:#f8e1de; --gold:#b7791f; --gold-soft:#f6ead2;
  --shadow:0 1px 2px rgba(22,25,34,.06),0 8px 24px rgba(22,25,34,.08);
  --display:"Bricolage Grotesque","Avenir Next",Avenir,"Segoe UI",system-ui,sans-serif;
  --body:"Source Serif 4",Georgia,"Times New Roman",serif;
  --mono:"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --paper:#11141f; --card:#191d2b; --ink:#e8e8e2; --muted:#9aa0b1; --line:#2b3043; --line-strong:#454b63;
  --accent:#9aa3ff; --accent-ink:#11141f; --accent-soft:#232a4d;
  --ok:#5fcf93; --ok-soft:#173327; --bad:#ff8577; --bad-soft:#3d1c19; --gold:#e3b352; --gold-soft:#3a2f16;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 28px rgba(0,0,0,.45); color-scheme:dark}}
:root[data-theme="dark"]{
  --paper:#11141f; --card:#191d2b; --ink:#e8e8e2; --muted:#9aa0b1; --line:#2b3043; --line-strong:#454b63;
  --accent:#9aa3ff; --accent-ink:#11141f; --accent-soft:#232a4d;
  --ok:#5fcf93; --ok-soft:#173327; --bad:#ff8577; --bad-soft:#3d1c19; --gold:#e3b352; --gold-soft:#3a2f16;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 28px rgba(0,0,0,.45); color-scheme:dark}

*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.5;-webkit-font-smoothing:antialiased}
button{font:inherit;color:inherit;cursor:pointer;-webkit-tap-highlight-color:transparent}
button:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
h1,h2,h3{font-family:var(--display);line-height:1.1;margin:0;text-wrap:balance}
.mono{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase}
.wrap{max-width:640px;margin:0 auto;padding-inline:16px;padding-block:0 32px}

/* App bar */
.bar{position:sticky;top:env(safe-area-inset-top,0px);z-index:5;background:var(--paper);border-bottom:1px solid var(--line)}
.bar .wrap{display:flex;align-items:center;gap:12px;padding-block:10px;min-height:56px}
.bar .title{font-family:var(--display);font-weight:800;font-size:1.05rem;letter-spacing:-.01em;flex:1;min-width:0}
.pill{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:999px;padding:4px 10px;font-family:var(--mono);font-size:.74rem;font-variant-numeric:tabular-nums;white-space:nowrap}
.pill b{font-weight:700}
.iconbtn{background:none;border:1px solid var(--line);border-radius:999px;width:36px;height:36px;display:inline-grid;place-items:center;flex:none}
.iconbtn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* Home */
.hero{padding-block:28px 10px}
.hero .eyebrow{font-family:var(--mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.hero h1{font-size:clamp(2.1rem,7vw,3rem);font-weight:800;letter-spacing:-.025em;margin-top:6px}
.hero p{margin:10px 0 0;color:var(--muted);max-width:52ch}
.stats{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.world{background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);margin-top:18px;overflow:hidden}
.world header{display:flex;align-items:baseline;gap:10px;padding:16px 18px 6px}
.world header .num{font-family:var(--mono);font-size:.74rem;color:var(--muted);letter-spacing:.1em}
.world header h2{font-size:1.35rem;font-weight:700;letter-spacing:-.015em;flex:1;min-width:0}
.world header .done{font-family:var(--mono);font-size:.72rem;color:var(--muted);font-variant-numeric:tabular-nums}
.world .blurb{padding:0 18px 12px;color:var(--muted);font-size:.95rem;margin:0}
.slots{display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:10px;padding:4px 18px 18px}
.slot{position:relative;border:2px dashed var(--line-strong);border-radius:12px;background:none;padding:12px 8px 10px;text-align:left;min-height:92px;display:flex;flex-direction:column;justify-content:space-between;gap:6px;transition:transform .12s ease,border-color .12s ease}
.slot:hover{transform:translateY(-2px);border-color:var(--accent)}
.slot .k{font-family:var(--mono);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.slot .n{font-family:var(--display);font-weight:700;font-size:.92rem;line-height:1.15;letter-spacing:-.01em}
.slot .stars{font-size:.8rem;letter-spacing:.05em;color:var(--gold);min-height:1em}
.slot.stamped{border-style:solid;border-color:var(--ok);background:var(--ok-soft)}
.slot.boss{border-color:var(--accent);background:var(--accent-soft)}
.slot.boss.stamped{border-color:var(--gold);background:var(--gold-soft)}
.slot.locked{opacity:.55}
.slot.locked:hover{transform:none;border-color:var(--line-strong)}
.slot .lock{position:absolute;top:8px;right:8px;width:14px;height:14px}
.slot .lock svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2}
.final{margin-top:18px;background:var(--ink);color:var(--paper);border-radius:14px;padding:18px;display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.final h2{font-size:1.3rem;font-weight:800;letter-spacing:-.02em}
.final p{margin:4px 0 0;font-size:.92rem;opacity:.8;flex-basis:100%}
.final .go{margin-left:auto}
.tools{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.foot{margin-top:28px;color:var(--muted);font-size:.85rem}

/* Buttons */
.btn{border:1px solid var(--line-strong);background:var(--card);border-radius:10px;padding:12px 18px;font-family:var(--display);font-weight:700;font-size:1rem;letter-spacing:-.005em;transition:transform .08s ease,background .12s ease}
.btn:active{transform:translateY(1px)}
.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn.ghost{background:none}
.btn.small{padding:8px 12px;font-size:.9rem}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.btn.inv{background:var(--paper);color:var(--ink);border-color:var(--paper)}

/* Play */
.playbar{display:flex;align-items:center;gap:12px;padding-block:12px}
.prog{flex:1;height:10px;border-radius:999px;background:var(--line);overflow:hidden;min-width:0}
.prog i{display:block;height:100%;width:0;background:var(--accent);border-radius:999px;transition:width .3s ease}
.hearts{font-family:var(--mono);font-size:.8rem;color:var(--bad);letter-spacing:.1em;white-space:nowrap}
.timer{font-family:var(--mono);font-size:.8rem;font-variant-numeric:tabular-nums;min-width:3.2em;text-align:right;color:var(--muted)}
.timer.low{color:var(--bad);font-weight:700}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:20px 18px 18px;margin-top:6px;position:relative;overflow:hidden}
.card .type{font-family:var(--mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);display:flex;justify-content:space-between;gap:8px}
.card .q{font-family:var(--body);font-size:1.18rem;line-height:1.4;margin:10px 0 16px;font-weight:600}
.card .q em{font-style:italic;font-weight:400}
.card .q .lead{display:block;font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:500;margin-bottom:6px}
.opts{display:grid;gap:8px}
.opt{text-align:left;border:1.5px solid var(--line);background:var(--card);border-radius:12px;padding:12px 14px;font-family:var(--body);font-size:1.02rem;line-height:1.35;display:flex;gap:12px;align-items:flex-start;transition:border-color .12s ease,background .12s ease}
.opt .key{font-family:var(--mono);font-size:.72rem;color:var(--muted);border:1px solid var(--line);border-radius:6px;min-width:22px;height:22px;display:inline-grid;place-items:center;flex:none;margin-top:2px}
.opt:hover{border-color:var(--accent)}
.opt.sel{border-color:var(--accent);background:var(--accent-soft)}
.opt.ok{border-color:var(--ok);background:var(--ok-soft)}
.opt.bad{border-color:var(--bad);background:var(--bad-soft)}
.opt[disabled]{cursor:default}
.opt[disabled]:hover{border-color:var(--line)}
.opt.ok[disabled]:hover{border-color:var(--ok)}.opt.bad[disabled]:hover{border-color:var(--bad)}
.tf{grid-template-columns:1fr 1fr}
.tf .opt{justify-content:center;font-family:var(--display);font-weight:700;font-size:1.1rem;padding:18px}

/* Classify */
.cls-item{border:1.5px solid var(--line-strong);border-radius:12px;padding:14px;font-size:1.08rem;font-weight:600;line-height:1.35;background:var(--paper);margin-bottom:12px;min-height:3.6em;display:flex;align-items:center;justify-content:space-between;gap:10px}
.cls-item .count{font-family:var(--mono);font-size:.7rem;color:var(--muted);font-weight:500;flex:none}
.buckets{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:8px}
.buckets .opt{justify-content:center;text-align:center;font-family:var(--display);font-weight:700;font-size:.95rem;padding:12px 8px}
.cls-note{margin-top:10px;font-size:.92rem;color:var(--muted);min-height:1.3em}

/* Match */
.match{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.match .col{display:grid;gap:8px;align-content:start;min-width:0}
.match .opt{min-height:56px;align-items:center;font-size:.92rem;padding:10px 11px}
.match .opt.done{opacity:.4;border-style:dashed}
.match .opt.shake{animation:shake .3s ease}
@keyframes shake{25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}

/* Order */
.seq{min-height:52px;border:2px dashed var(--line-strong);border-radius:12px;padding:8px;display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px;background:var(--paper)}
.seq .empty{color:var(--muted);font-size:.9rem;padding:6px 4px}
.chip{border:1.5px solid var(--line);border-radius:999px;background:var(--card);padding:8px 12px;font-size:.92rem;line-height:1.25;text-align:left;display:inline-flex;gap:8px;align-items:center}
.chip .idx{font-family:var(--mono);font-size:.7rem;color:var(--accent);font-weight:700}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip.ok{border-color:var(--ok);background:var(--ok-soft)}.chip.bad{border-color:var(--bad);background:var(--bad-soft)}
.orderrow{display:flex;gap:8px;margin-top:12px}

/* Feedback */
.fb{margin-top:14px;border-top:1px dashed var(--line-strong);padding-top:14px;display:flex;gap:14px;align-items:flex-start}
.fb .x{font-size:.98rem;line-height:1.45;color:var(--ink);min-width:0}
.fb .x b{font-family:var(--display)}
.stamp{flex:none;font-family:var(--mono);font-weight:700;font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;border:3px double currentColor;border-radius:6px;padding:7px 9px;transform:rotate(-8deg);animation:slam .35s cubic-bezier(.2,1.4,.4,1) both;line-height:1}
.stamp.ok{color:var(--ok)}.stamp.bad{color:var(--bad)}
@keyframes slam{0%{transform:rotate(-8deg) scale(1.8);opacity:0}100%{transform:rotate(-8deg) scale(1);opacity:1}}
.actions{display:flex;justify-content:flex-end;gap:10px;margin-top:16px;position:sticky;bottom:0;padding-block:10px calc(10px + env(safe-area-inset-bottom,0px));background:linear-gradient(to top,var(--paper) 70%,transparent)}
.actions .btn{min-width:140px}

/* Result */
.result{text-align:center;padding-block:28px}
.result .bigstamp{display:inline-block;font-family:var(--mono);font-weight:700;font-size:1.1rem;letter-spacing:.2em;text-transform:uppercase;border:4px double currentColor;border-radius:10px;padding:14px 20px;transform:rotate(-6deg);animation:slam .45s cubic-bezier(.2,1.4,.4,1) both;margin-bottom:18px}
.result .bigstamp.ok{color:var(--ok)}.result .bigstamp.bad{color:var(--bad)}.result .bigstamp.gold{color:var(--gold)}
.result h2{font-size:2rem;font-weight:800;letter-spacing:-.02em}
.result .score{font-family:var(--display);font-size:3.2rem;font-weight:800;letter-spacing:-.03em;margin-top:6px;font-variant-numeric:tabular-nums}
.result .stars{font-size:1.8rem;color:var(--gold);letter-spacing:.1em;margin-top:2px}
.result .sub{color:var(--muted);margin-top:6px}
.result .rowbtns{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:22px}
.missed{text-align:left;margin-top:26px;border-top:1px solid var(--line);padding-top:14px}
.missed h3{font-size:1rem;font-weight:700;margin-bottom:8px}
.missed li{font-size:.92rem;color:var(--muted);margin:4px 0}
.missed li b{color:var(--ink);font-weight:600}

/* Misc */
.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:var(--paper);padding:10px 16px;border-radius:999px;font-family:var(--display);font-weight:700;font-size:.9rem;box-shadow:var(--shadow);z-index:9;opacity:0;pointer-events:none;transition:opacity .2s ease}
.toast.show{opacity:1}
.note{font-size:.9rem;color:var(--muted)}
.kbd{font-family:var(--mono);font-size:.7rem;border:1px solid var(--line);border-radius:4px;padding:1px 5px}
.hidden-anchor{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
@media (max-width:420px){.match{grid-template-columns:1fr}.match .colR{border-top:1px dashed var(--line-strong);padding-top:8px}.actions .btn{flex:1}}
@media (prefers-reduced-motion:reduce){.stamp,.result .bigstamp{animation:none}.slot,.btn,.opt,.prog i{transition:none}.match .opt.shake{animation:none}}