/* hOHMwork — black, lime, purple and orange from the hOHMwork.net logo. Layout: single working column, sticky top bar, one question card. */
:root {
  --yellow: #A6E80A;        /* main accent: hOHMwork lime (name kept so older rules still work) */
  --lime: #A6E80A;
  --purple: #7A22B0;
  --purple-hi: #A45BE0;     /* lighter purple for text and outlines on black */
  --orange: #F6780B;
  --spark: #F9C719;
  --silver: #D9D9D9;
  --charcoal: #000000;
  --panel: #131313;
  --panel-2: #1B1B1B;
  --line: #2E2E2E;
  --steel: #A9A9A9;
  --white: #FFFFFF;
  --red: #D62828;
  --blue: #0066CC;
  --earth: #4FE37A;         /* correct answers: a cooler green so it reads apart from the lime accent */
  --ink-on-yellow: #0B1400;
  --display: "Montserrat", "Arial Black", system-ui, sans-serif;
  --body: "Roboto", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Roboto Mono", ui-monospace, Menlo, Consolas, monospace;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--charcoal); color: var(--white); font: 16px/1.5 var(--body); }
body { min-height: 100%; }
button, select, input { font: inherit; color: inherit; }
button { cursor: pointer; }
button:focus-visible, select:focus-visible, input:focus-visible { outline: 3px solid var(--yellow); outline-offset: 2px; }
[hidden] { display: none !important; }

/* top bar */
.bar { position: sticky; top: 0; z-index: 5; background: #000; border-bottom: 3px solid transparent; border-image: linear-gradient(90deg, var(--orange), var(--purple) 45%, var(--lime)) 1; }
.bar-in { max-width: 820px; margin: 0 auto; padding: 10px 16px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.logo { display: flex; align-items: center; gap: 8px; background: none; border: 0; padding: 0; }
.logo img { height: 84px; width: auto; display: block; }
.logo .word { font: 800 italic 18px/1 var(--display); color: var(--purple-hi); text-transform: uppercase; letter-spacing: 1px; }
.logo .word b { color: var(--yellow); }
.who { font-size: 14px; color: var(--steel); }
.who b { color: var(--white); }

main { max-width: 820px; margin: 0 auto; padding: 18px 16px 90px; display: grid; gap: 16px; }
h1, h2, h3 { font-family: var(--display); margin: 0; text-wrap: balance; }
h1 { font-size: 28px; font-weight: 800; font-style: italic; }
h2 { font-size: 20px; font-weight: 800; }
.muted { color: var(--steel); }
.tag { display: inline-flex; align-items: center; gap: 6px; background: var(--yellow); color: var(--ink-on-yellow); font: 700 13px var(--display); padding: 4px 10px; border-radius: 4px; text-transform: uppercase; letter-spacing: .3px; }
.tag.dark { background: var(--panel-2); color: var(--white); }
.tagline { font: 700 13px var(--display); letter-spacing: 4px; color: var(--steel); text-transform: uppercase; }

.card { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 18px; display: grid; gap: 14px; }
.btn { border: 1px solid var(--line); background: var(--panel-2); color: var(--white); font: 700 15px var(--display); padding: 11px 18px; border-radius: 8px; }
.btn.primary { background: var(--yellow); border-color: var(--yellow); color: var(--ink-on-yellow); }
.btn:disabled { opacity: .45; cursor: default; }
.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.spread { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: space-between; }

/* nickname */
.welcome { display: grid; gap: 16px; max-width: 460px; margin: 6vh auto 0; text-align: center; }
.welcome img.hero { width: 100%; max-width: 460px; margin: 0 auto; border-radius: 12px; }
.field { display: grid; gap: 6px; text-align: left; }
.field label { font-weight: 600; font-size: 14px; }
.text { background: #0A0A0A; border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; font-size: 17px; width: 100%; }
.err { color: #ff8a80; font-size: 14px; min-height: 1.4em; }

/* home */
.cats { display: grid; gap: 10px; }
.cat { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; align-items: center; text-align: left; background: var(--panel); border: 1px solid var(--line); border-left: 6px solid var(--yellow); border-radius: 10px; padding: 14px 16px; }
.cat.off { border-left-color: var(--line); opacity: .6; cursor: default; }
.cat .name { font: 800 17px var(--display); }
.cat .sub { grid-column: 1; font-size: 13px; color: var(--steel); }
.cat .go { grid-row: 1 / span 2; grid-column: 2; font: 700 13px var(--display); color: var(--yellow); }
.cat.off .go { color: var(--steel); }

/* quiz */
.progress { height: 8px; background: #0A0A0A; border-radius: 4px; overflow: hidden; }
.progress > div { height: 100%; background: var(--yellow); transition: width .3s; }
.qtext { font-size: 19px; font-weight: 500; margin: 0; max-width: 62ch; }
.vnote { font-size: 12.5px; color: var(--steel); margin-top: -6px; }
.part { display: grid; gap: 8px; }
.part-h { display: flex; justify-content: space-between; font: 700 12.5px var(--display); text-transform: uppercase; letter-spacing: .8px; color: var(--steel); }
.opts { display: grid; gap: 8px; }
.opt { display: flex; gap: 12px; align-items: center; text-align: left; width: 100%; background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px; padding: 11px 14px; font-size: 16px; }
.opt .k { flex: none; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: #3a3a3a; font: 700 14px var(--display); }
.opt[aria-pressed="true"] { border-color: var(--yellow); box-shadow: inset 0 0 0 1px var(--yellow); }
.opt[aria-pressed="true"] .k { background: var(--yellow); color: var(--ink-on-yellow); }
.opt.good { border-color: var(--earth); background: #22301a; box-shadow: none; }
.opt.good .k { background: var(--earth); color: #111; }
.opt.bad { border-color: var(--red); background: #3a1c1c; box-shadow: none; }
.opt.bad .k { background: var(--red); color: #fff; }
.opt:disabled { cursor: default; }
.tf { grid-template-columns: 1fr 1fr; }
.num { display: flex; align-items: center; gap: 8px; }
.num .text { max-width: 160px; font-family: var(--mono); }

/* reference rows */
.refrow { display: grid; gap: 6px; background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; }
.refrow.good { border-color: var(--earth); }
.refrow.bad { border-color: var(--red); }
.refrow-h { display: flex; justify-content: space-between; align-items: center; gap: 8px; font: 700 13px var(--display); }
.refrow-h .kind { color: var(--yellow); }
.boxes { display: flex; flex-wrap: wrap; gap: 6px 4px; align-items: flex-end; }
.box { display: grid; gap: 4px; justify-items: center; }
.hint { border: 1px dashed var(--yellow); background: transparent; color: var(--yellow); font: 700 11px var(--display); padding: 2px 8px; border-radius: 999px; text-transform: uppercase; letter-spacing: .5px; }
.hint:disabled { border-color: var(--line); color: #666; cursor: default; }
.hint.used { border-style: solid; background: var(--yellow); color: var(--ink-on-yellow); }
.dd { appearance: none; -webkit-appearance: none; background: #0A0A0A; border: 1px solid var(--line); border-radius: 6px; padding: 8px 10px; min-width: 56px; font: 500 15px var(--mono); text-align: center; }
.dd:disabled { opacity: .35; }
.dd.given { border-color: var(--yellow); color: var(--yellow); }
.sep { font: 700 18px var(--mono); color: var(--steel); padding-bottom: 7px; }
.reqnote { font-size: 13px; color: var(--yellow); }
.correct-ref { font: 500 14px var(--mono); color: var(--earth); }
.mark { font: 700 13px var(--display); }
.mark.good { color: var(--earth); } .mark.bad { color: #ff8a80; }
.addref { justify-self: start; background: transparent; border: 1px dashed var(--steel); color: var(--steel); border-radius: 8px; padding: 6px 12px; font-size: 14px; }

.feedback { border-left: 5px solid var(--yellow); background: #161a0c; border-radius: 0 8px 8px 0; padding: 12px 14px; display: grid; gap: 6px; }
.feedback .score { font: 800 18px var(--display); }
.feedback p { margin: 0; max-width: 65ch; }
.allrefs { font: 500 14px var(--mono); color: var(--earth); }

/* results */
.big { font: 800 52px/1 var(--display); color: var(--yellow); font-variant-numeric: tabular-nums; }
.pill { display: inline-block; padding: 4px 12px; border-radius: 999px; font: 800 14px var(--display); }
.pill.pass { background: var(--earth); color: #111; }
.pill.fail { background: var(--red); color: #fff; }

/* ad slot placeholder */
.ad { position: fixed; left: 0; right: 0; bottom: 0; height: 56px; background: #121212; border-top: 1px solid var(--line); display: grid; place-items: center; color: #666; font-size: 12px; letter-spacing: 2px; text-transform: uppercase; }
.ad.hide { display: none; }
footer { font-size: 12px; color: #888; max-width: 70ch; }

@media (max-width: 480px) {
  .qtext { font-size: 17px; }
  .dd { min-width: 48px; padding: 7px 6px; font-size: 14px; }
  .logo img { height: 54px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

/* phase 3 */
.secrow { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; justify-content: space-between; border-top: 1px solid var(--line); padding-top: 10px; }
.secrow .btn, .card .row .mb { padding: 7px 12px; font-size: 13px; }
.timer { font: 800 18px var(--mono); color: var(--yellow); background: #0A0A0A; border: 1px solid var(--yellow); border-radius: 6px; padding: 2px 10px; min-width: 70px; text-align: center; }
.timer.low { color: #fff; background: var(--red); border-color: var(--red); }
.flash { background: #3a1c1c; border: 1px solid var(--red); border-radius: 8px; padding: 10px 12px; font-size: 14px; }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; }
.tile { background: var(--panel); border: 1px solid var(--line); border-top: 4px solid var(--yellow); border-radius: 10px; padding: 12px 14px; display: grid; gap: 2px; }
.tv { font: 800 28px/1.1 var(--display); font-variant-numeric: tabular-nums; }
.tv small { font-size: 15px; color: var(--steel); }
.tl { font-size: 13px; color: var(--steel); }
.meter { position: relative; height: 14px; background: #0A0A0A; border-radius: 7px; overflow: visible; }
.meter > div { height: 100%; border-radius: 7px; background: var(--yellow); }
.meter.sm { height: 10px; }
.meter .pm { position: absolute; top: -4px; bottom: -4px; width: 2px; background: var(--white); }
.secbar { display: grid; grid-template-columns: 110px 1fr 48px; gap: 10px; align-items: center; font-size: 14px; }
.mono { font-family: var(--mono); }
.hist { border-top: 1px solid var(--line); padding-top: 8px; font-size: 14px; }

/* phase 5/6 */
.games { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; }
.game { display: grid; gap: 4px; text-align: left; background: var(--panel); border: 1px solid var(--line); border-top: 4px solid var(--yellow); border-radius: 10px; padding: 14px; }
.game b { font: 800 16px var(--display); }
.game .gi { font-size: 22px; }
.game .muted { font-size: 13px; }
.card.daily { border-color: var(--orange); box-shadow: 0 0 0 1px var(--orange), 0 0 22px rgba(246,120,11,.18); }
.seg { display: inline-flex; flex-wrap: wrap; gap: 4px; background: #0A0A0A; border-radius: 8px; padding: 4px; }
.seg button { border: 0; background: transparent; padding: 8px 12px; border-radius: 6px; font: 700 13px var(--display); color: var(--steel); }
.seg button[aria-pressed="true"] { background: var(--yellow); color: var(--ink-on-yellow); }
.chip2 { border: 1px solid var(--line); background: var(--panel); border-radius: 999px; padding: 5px 12px; font-size: 13px; }
.chip2[aria-pressed="true"] { border-color: var(--yellow); color: var(--yellow); }
.lbrow { display: grid; grid-template-columns: 32px 1fr auto 32px; gap: 8px; align-items: center; border-top: 1px solid var(--line); padding: 8px 0; font-size: 15px; }
.lbrow .rk { font: 800 16px var(--display); color: var(--yellow); }
.lbrow.me { background: #22123a; }
.flag { background: transparent; border: 0; color: var(--steel); font-size: 15px; }
.linkbtn { background: none; border: 0; padding: 0; color: var(--steel); font-size: 13px; text-decoration: underline; }
textarea.text { font-size: 15px; resize: vertical; }
.flashcard { display: grid; gap: 12px; text-align: left; min-height: 260px; align-content: center; background: var(--panel); border: 1px solid var(--line); border-left: 6px solid var(--yellow); border-radius: 12px; padding: 22px; width: 100%; }
.flashcard.back { border-left-color: var(--earth); }
.fc-k { font: 700 12px var(--display); text-transform: uppercase; letter-spacing: .8px; color: var(--steel); }
.fc-q { font-size: 19px; font-weight: 500; }
.fc-a { font: 800 24px var(--display); color: var(--earth); }
.fc-r { font: 500 15px var(--mono); color: var(--yellow); }
.fc-e { font-size: 15px; color: #ddd; }
.rate { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.btn.bad { border-color: var(--red); color: #ff8a80; }
.btn.good { border-color: var(--earth); color: var(--earth); }

/* extras */
.badges { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 8px; }
.badge { display: grid; gap: 2px; background: var(--panel-2); border: 1px dashed var(--line); border-radius: 10px; padding: 10px; opacity: .45; filter: grayscale(1); }
.badge.on { opacity: 1; filter: none; border: 1px solid var(--yellow); }
.badge .bi { font-size: 24px; }
.badge b { font: 800 14px var(--display); }
.badge .muted { font-size: 12px; }
.pathlist { display: grid; gap: 8px; }
.pathbtn { display: flex; justify-content: space-between; gap: 10px; align-items: center; text-align: left; background: var(--panel-2); border: 1px solid var(--line); border-left: 4px solid var(--yellow); border-radius: 8px; padding: 10px 12px; }
.pathbtn .go { font: 700 12px var(--display); color: var(--yellow); white-space: nowrap; }

/* hOHMwork accents: rotate lime, purple and orange through the category cards */
.cat:nth-of-type(3n+2):not(.off) { border-left-color: var(--purple-hi); }
.cat:nth-of-type(3n+2):not(.off) .go { color: var(--purple-hi); }
.cat:nth-of-type(3n+3):not(.off) { border-left-color: var(--orange); }
.cat:nth-of-type(3n+3):not(.off) .go { color: var(--orange); }
.seg button[aria-pressed="true"] { background: var(--purple); color: #fff; }
.card h2 { letter-spacing: -.2px; }

/* Stop phones zooming: iOS zooms into any box with text under 16px, and double-tap zooms the page. */
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; touch-action: manipulation; }
input, select, textarea, .dd { font-size: 16px; }
@media (max-width: 700px) { .dd { font-size: 16px; padding: 7px 4px; min-width: 46px; } textarea.text { font-size: 16px; } }

/* returning player check */
.backname { font: 800 italic 30px/1.1 var(--display); color: var(--lime); word-break: break-word; }
.welcome .btn { width: 100%; }

/* player's place under their name, and today's top 3 on the home screen */
.nm small.pl { display: block; font: 400 12px/1.2 var(--body); color: var(--steel); margin-top: 2px; }
.dtop { border-top: 1px solid var(--line); margin-top: 4px; padding-top: 10px; display: grid; gap: 6px; }
.dtop-h { font: 800 12px var(--display); text-transform: uppercase; letter-spacing: 1px; color: var(--orange); }
.dtop-r { display: grid; grid-template-columns: 26px 1fr auto; gap: 8px; align-items: center; font-size: 15px; }
.dtop-r .mono { font-size: 14px; }
.dtop .linkbtn { justify-self: start; }
.welcome label { text-align: left; }