/* ============================================================
   TapTest - deep instrument-panel theme
   Palette: ink navy base, amber "live" press, mint "tested/pass"
   No web fonts / no external requests -> strict CSP friendly.
   ============================================================ */
:root{
  --bg:#0f1117;
  --bg-2:#141824;
  --panel:#171b28;
  --surface:#1e2333;
  --surface-hi:#2a3145;
  --ink:#e7eaf3;
  --muted:#8a92a8;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --live:#ffc24b;
  --live-dim:rgba(255,194,75,.16);
  --tested:#37e0b0;
  --tested-dim:rgba(55,224,176,.14);
  --u:40px;
  --gap:6px;
  --sub:calc((var(--u) - 3*var(--gap)) / 4); /* one 0.25u grid track */
  --radius:10px;
  --shadow-key:0 2px 0 rgba(0,0,0,.55), 0 6px 14px rgba(0,0,0,.35);
  --shadow-key-down:0 1px 0 rgba(0,0,0,.5), 0 2px 5px rgba(0,0,0,.4) inset;
  --maxw:1180px;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--sans);color:var(--ink);
  background:radial-gradient(1200px 600px at 50% -10%, #1a2032 0%, transparent 60%), var(--bg);
  line-height:1.55;-webkit-font-smoothing:antialiased;
}
a{color:var(--live);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:20px}

/* ---------- Ads ---------- */
.ad{
  margin:18px auto;border:1px dashed var(--line-2);border-radius:var(--radius);
  background:rgba(255,255,255,.02);display:flex;flex-direction:column;
  align-items:center;justify-content:center;text-align:center;
}
.ad__label{font:500 10px/1 var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--muted);padding:6px 0 4px}
.ad__slot{color:var(--muted);font:500 13px/1 var(--mono);width:100%;display:flex;align-items:center;justify-content:center}
.ad--leaderboard{max-width:728px;min-height:90px}
.ad--leaderboard .ad__slot{min-height:60px}
.ad--rect{max-width:728px;min-height:250px}
.ad--rect .ad__slot{min-height:230px}
.ad-rail{position:fixed;top:110px;width:160px;min-height:600px;z-index:5;display:none}
.ad-rail--l{left:24px}
.ad-rail--r{right:24px}
.ad-rail .ad__slot{min-height:560px}
@media(min-width:1580px){ .ad-rail{display:flex} }

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(15,17,23,.82);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.header-row{display:flex;align-items:center;gap:16px;padding-block:12px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;letter-spacing:-.02em}
.brand__mark{width:30px;height:30px;border-radius:8px;flex:none;display:grid;place-items:center;background:linear-gradient(180deg,var(--surface-hi),var(--surface));border:1px solid var(--line-2);box-shadow:0 2px 0 rgba(0,0,0,.5);color:var(--live);font-size:16px}
.brand__mark span{transform:translateY(-1px)}
.spacer{flex:1}

.tabs{display:flex;gap:4px;background:var(--bg-2);border:1px solid var(--line);border-radius:12px;padding:4px}
.tab{appearance:none;border:0;cursor:pointer;font:600 14px/1 var(--sans);color:var(--muted);padding:9px 16px;border-radius:9px;background:transparent;display:flex;align-items:center;gap:8px;transition:color .15s,background .15s}
.tab[aria-selected="true"]{background:var(--surface);color:var(--ink);box-shadow:0 1px 0 rgba(0,0,0,.4)}
.tab:hover{color:var(--ink)}
.tab .dot{width:7px;height:7px;border-radius:50%;background:var(--muted);flex:none}
.tab[aria-selected="true"] .dot{background:var(--tested);box-shadow:0 0 10px var(--tested)}

.icon-btn{appearance:none;cursor:pointer;background:var(--bg-2);border:1px solid var(--line);color:var(--ink);border-radius:11px;height:42px;padding:0 14px;display:flex;align-items:center;gap:9px;font:600 13px/1 var(--sans);transition:border-color .15s,background .15s,color .15s}
.icon-btn:hover{border-color:var(--line-2)}
.icon-btn[aria-pressed="true"]{border-color:var(--live);color:var(--live);background:var(--live-dim)}
.icon-btn svg{width:18px;height:18px}

:focus-visible{outline:2px solid var(--live);outline-offset:2px;border-radius:6px}

/* ---------- Hero ---------- */
.hero{padding:34px 0 6px;text-align:center}
h1{font-size:clamp(28px,4.4vw,44px);line-height:1.08;letter-spacing:-.02em;margin:0 0 12px}
h1 .accent{color:var(--live)}
.lede{color:var(--muted);max-width:620px;margin:0 auto;font-size:16px}

/* Status + toolbar */
.statusbar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:center;margin:22px 0 14px}
.pill{display:inline-flex;align-items:center;gap:9px;background:var(--bg-2);border:1px solid var(--line);border-radius:999px;padding:8px 14px;font:500 13px/1 var(--sans);color:var(--muted)}
.pill b{color:var(--ink);font-family:var(--mono);font-weight:700}
.pill .live-dot{width:8px;height:8px;border-radius:50%;background:var(--muted)}
.pill.is-live .live-dot{background:var(--tested);box-shadow:0 0 10px var(--tested);animation:pulse 1.6s ease-in-out infinite}
.btn-ghost{appearance:none;cursor:pointer;background:transparent;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:8px 14px;font:600 13px/1 var(--sans);transition:color .15s,border-color .15s}
.btn-ghost:hover{color:var(--ink);border-color:var(--line-2)}
.btn-ghost[aria-pressed="true"]{color:var(--live);border-color:var(--live);background:var(--live-dim)}

/* Native selects, themed */
.select{appearance:none;cursor:pointer;background:var(--bg-2);color:var(--ink);border:1px solid var(--line);border-radius:999px;padding:8px 34px 8px 14px;font:600 13px/1 var(--sans);
  background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);
  background-position:calc(100% - 18px) 55%,calc(100% - 13px) 55%;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.select:hover{border-color:var(--line-2)}
.select-label{display:inline-flex;align-items:center;gap:8px;font:500 12px/1 var(--mono);color:var(--muted);text-transform:uppercase;letter-spacing:.08em}

@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

/* ---------- Panel shell ---------- */
.stage{background:linear-gradient(180deg,var(--panel),var(--bg-2));border:1px solid var(--line);border-radius:18px;padding:22px;margin:6px 0 4px;box-shadow:0 20px 60px rgba(0,0,0,.35);overflow-x:auto}
.panel[hidden]{display:none}

/* ---------- Keyboard ---------- */
.keyboard{display:flex;gap:20px;justify-content:center;min-width:min-content;margin-inline:auto;width:max-content}
.kb-block{display:flex;flex-direction:column;gap:var(--gap)}
.kb-row{display:flex;gap:var(--gap)}
.spacer-key{width:calc(var(--u)*.5)}

/* main alphanumeric cluster is a fine-grained grid so ISO tall Enter works */
.kb-main{display:grid;grid-template-columns:repeat(60,var(--sub));grid-auto-rows:var(--u);gap:var(--gap)}
.kb-main .key{width:auto;height:auto}

.key{
  --w:1;width:calc(var(--u)*var(--w) + (var(--w) - 1)*var(--gap));height:var(--u);
  border-radius:9px;background:linear-gradient(180deg,var(--surface-hi),var(--surface));
  border:1px solid var(--line-2);box-shadow:var(--shadow-key);color:var(--ink);position:relative;
  display:flex;flex-direction:column;align-items:flex-start;justify-content:flex-start;padding:6px 8px;
  font:600 12px/1.1 var(--mono);user-select:none;cursor:default;
  transition:transform .04s ease, box-shadow .04s ease, background .12s, border-color .12s;
}
.key .sub{color:var(--muted);font-size:10px;font-weight:400}
.key.small{font-size:10px}
.key.wide-label{justify-content:center;align-items:center;text-align:center}

.key.tested{border-color:rgba(55,224,176,.5);background:linear-gradient(180deg,#243a37,#1c2b2a)}
.key.tested::after{content:"";position:absolute;inset:0;border-radius:8px;box-shadow:inset 0 0 0 1px rgba(55,224,176,.35)}

.key.down{transform:translateY(3px);background:linear-gradient(180deg,#ffd271,var(--live));color:#241a02;border-color:#ffdd8a;box-shadow:var(--shadow-key-down),0 0 0 3px var(--live-dim),0 0 22px rgba(255,194,75,.45)}
.key.down .sub{color:#5a4610}

.numpad{display:grid;grid-template-columns:repeat(4,var(--u));grid-auto-rows:var(--u);gap:var(--gap)}
.numpad .key{width:auto;height:auto}
.k-plus{grid-row:span 2;height:auto}
.k-npenter{grid-row:span 2;height:auto}
.k-zero{grid-column:span 2;width:auto}

.navcluster{display:flex;flex-direction:column;gap:var(--gap)}
.nav-grid{display:grid;grid-template-columns:repeat(3,var(--u));grid-auto-rows:var(--u);gap:var(--gap)}
.nav-grid .key{width:auto;height:auto}
.arrows{display:grid;grid-template-columns:repeat(3,var(--u));grid-auto-rows:var(--u);gap:var(--gap);margin-top:calc(var(--u) + var(--gap))}
.arrows .key{width:auto;height:auto}
.a-up{grid-column:2}.a-left{grid-column:1;grid-row:2}.a-down{grid-column:2;grid-row:2}.a-right{grid-column:3;grid-row:2}

/* ---------- Readout strip ---------- */
.readout{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden;margin-top:14px}
.readout .cell{background:var(--bg-2);padding:12px 14px;min-width:0}
.readout .k{font:500 10px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.readout .v{font:700 18px/1.2 var(--mono);margin-top:6px;color:var(--ink);word-break:break-all}
.readout .v.accent{color:var(--live)}
.readout .v.good{color:var(--tested)}
@media(max-width:720px){.readout{grid-template-columns:repeat(2,1fr)}}

/* ---------- Key history ---------- */
.history{background:linear-gradient(180deg,var(--panel),var(--bg-2));border:1px solid var(--line);border-radius:16px;padding:18px;margin:4px 0}
.history[hidden]{display:none}
.history__head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.history__head h3{margin:0;font:600 14px/1 var(--mono);text-transform:uppercase;letter-spacing:.1em;color:var(--muted)}
.history__head .count{color:var(--ink);font-family:var(--mono)}
.hist-stream{display:flex;flex-wrap:wrap;gap:6px;max-height:172px;overflow:auto;padding:2px}
.hist-empty{color:var(--muted);font-size:13px;padding:8px 2px}
.hist-chip{display:inline-flex;align-items:center;gap:6px;background:var(--surface);border:1px solid var(--line-2);border-radius:8px;padding:6px 9px;font:600 12px/1 var(--mono);color:var(--ink);animation:chipIn .12s ease}
.hist-chip .code{color:var(--muted);font-weight:400;font-size:10px}
@keyframes chipIn{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}

/* ---------- Gamepad ---------- */
.pad-empty{text-align:center;color:var(--muted);padding:48px 20px}
.pad-empty svg{width:54px;height:54px;opacity:.5;margin-bottom:14px}
.pad-empty h3{color:var(--ink);margin:0 0 6px;font-size:18px}
.pad-wrap{display:grid;grid-template-columns:1.3fr 1fr;gap:22px;align-items:start}
@media(max-width:820px){.pad-wrap{grid-template-columns:1fr}}
.pad-svg{width:100%;height:auto;display:block}
.pad-svg .btn-shape{fill:var(--surface);stroke:var(--line-2);stroke-width:2;transition:fill .05s}
.pad-svg .btn-shape.on{fill:var(--live);stroke:#ffdd8a}
.pad-svg .label{fill:var(--muted);font:600 13px var(--mono)}
.pad-svg .stick{fill:var(--surface-hi);stroke:var(--line-2);stroke-width:2}
.pad-svg .stick-dot{fill:var(--live)}
.pad-svg .trig-bg{fill:var(--surface);stroke:var(--line-2);stroke-width:2}
.pad-svg .trig-fill{fill:var(--tested)}
.pad-svg .decor{fill:none;stroke:var(--line-2);stroke-width:2}
.pad-svg .body{fill:var(--bg-2);stroke:var(--line);stroke-width:2}

.pad-side .row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.pad-side h3{margin:0 0 10px;font-size:14px;color:var(--muted);font-family:var(--mono);text-transform:uppercase;letter-spacing:.1em}
.pad-type{display:inline-flex;align-items:center;gap:8px;font:600 12px/1 var(--mono);color:var(--tested);background:var(--tested-dim);border:1px solid rgba(55,224,176,.3);padding:7px 12px;border-radius:999px}
.axis-row{display:flex;align-items:center;gap:10px;margin-bottom:8px;font:500 12px/1 var(--mono);color:var(--muted)}
.axis-row .name{width:52px;flex:none;color:var(--ink)}
.axis-bar{flex:1;height:8px;border-radius:99px;background:var(--bg);border:1px solid var(--line);position:relative;overflow:hidden}
.axis-bar i{position:absolute;top:0;bottom:0;left:50%;width:2px;background:var(--live);transition:left .05s}
.axis-val{width:52px;text-align:right;color:var(--ink)}
.vibrate-btn{margin-top:6px}
.pad-note{color:var(--muted);font-size:12px;margin-top:14px;max-width:320px}

/* ---------- Content / FAQ ---------- */
.content{padding:10px 0 40px}
.content h2{font-size:24px;letter-spacing:-.01em;margin:28px 0 12px}
.content p{color:var(--muted);max-width:760px}
.faq{margin-top:8px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line);padding:2px 0}
.faq summary{cursor:pointer;list-style:none;padding:16px 4px;font-weight:600;font-size:16px;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--live);font-family:var(--mono);font-size:20px;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq p{padding:0 4px 16px;margin:0}

/* ---------- Prose (privacy page) ---------- */
.prose{max-width:760px;margin:0 auto;padding:30px 0 50px}
.prose h1{text-align:left;font-size:32px;margin-bottom:6px}
.prose .updated{color:var(--muted);font:500 13px/1 var(--mono);margin-bottom:24px}
.prose h2{font-size:20px;margin:26px 0 8px}
.prose p,.prose li{color:var(--muted)}
.prose ul{padding-left:20px}
.prose a{color:var(--live)}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--line);padding:26px 0 40px;color:var(--muted);font-size:14px}
.foot-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between}
.foot-nav{display:flex;gap:18px;flex-wrap:wrap}
.foot-nav a{color:var(--muted)}
.foot-nav a:hover{color:var(--ink)}

/* ---------- Responsive keyboard scaling ---------- */
@media(max-width:1180px){:root{--u:38px}}
@media(max-width:1080px){:root{--u:34px}}
@media(max-width:980px){:root{--u:30px} .key{font-size:11px}}
@media(max-width:860px){:root{--u:26px} .keyboard{gap:16px} .key{font-size:10px;padding:4px 5px}}
@media(max-width:680px){:root{--u:22px;--gap:4px} .keyboard{gap:12px} .key{font-size:9px;padding:3px 4px} .key .sub{display:none}}
@media(max-width:520px){:root{--u:18px} .keyboard{gap:10px}}

@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

/* homepage content lists (guides) */
.content ul{color:var(--muted);max-width:760px;padding-left:20px;margin:6px 0 4px}
.content ul li{margin:8px 0}
.content ul a{color:var(--live)}

/* header Guides dropdown */
.header-row{flex-wrap:wrap}
.menu{position:relative}
.menu__btn{list-style:none;cursor:pointer;display:inline-flex;align-items:center;gap:7px;font:600 14px/1 var(--sans);color:var(--muted);padding:9px 14px;border-radius:9px;background:var(--bg-2);border:1px solid var(--line);transition:color .15s,background .15s,border-color .15s}
.menu__btn::-webkit-details-marker{display:none}
.menu__btn::marker{content:""}
.menu__btn:hover{color:var(--ink);border-color:var(--line-2)}
.menu[open] .menu__btn{color:var(--ink);border-color:var(--line-2);background:var(--surface)}
.menu__btn .chev{transition:transform .15s}
.menu[open] .menu__btn .chev{transform:rotate(180deg)}
.menu__panel{position:absolute;top:calc(100% + 8px);right:0;min-width:240px;z-index:60;background:var(--panel);border:1px solid var(--line-2);border-radius:12px;padding:6px;box-shadow:0 22px 55px rgba(0,0,0,.5);display:flex;flex-direction:column;gap:1px}
.menu__panel a{color:var(--ink);text-decoration:none;padding:10px 12px;border-radius:8px;font:600 13px/1.25 var(--sans)}
.menu__panel a:hover{background:var(--surface);text-decoration:none}
.menu__panel .sep{height:1px;background:var(--line);margin:5px 4px}
@media(max-width:560px){.menu__panel{right:auto;left:0}}

/* typing test */
.tt{max-width:820px;margin-inline:auto}
.tt-words{font:500 24px/1.9 var(--mono);color:var(--muted);max-height:9rem;overflow:hidden;user-select:none}
.tt-word{display:inline-block;margin-right:.55em}
.tt-char{color:var(--muted)}
.tt-note{color:var(--muted);font-size:13px;text-align:center;margin-top:16px}
@media(max-width:680px){.tt-words{font-size:19px;max-height:8rem}}

/* typing test: input states */
.tt-wrap{position:relative;transition:transform .12s ease}
.tt-char.correct{color:var(--ink)}
.tt-char.wrong{color:#ff6b6b}
.tt-caret{display:inline-block;width:2px;height:1.25em;vertical-align:text-bottom;margin:0 -1px;border-radius:2px;background:var(--live);animation:ttblink 1s steps(1) infinite}
@keyframes ttblink{50%{opacity:0}}
@media(prefers-reduced-motion:reduce){.tt-caret{animation:none}}

/* typing test: control bar */
.tt-bar{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:18px;flex-wrap:wrap}
.tt-durations{display:flex;gap:4px;background:var(--bg-2);border:1px solid var(--line);border-radius:12px;padding:4px}
.tt-dur{appearance:none;border:0;cursor:pointer;background:transparent;color:var(--muted);font:600 13px/1 var(--sans);padding:8px 14px;border-radius:9px;transition:color .15s,background .15s}
.tt-dur:hover{color:var(--ink)}
.tt-dur.is-active{background:var(--surface);color:var(--ink);box-shadow:0 1px 0 rgba(0,0,0,.4)}
.tt-timer{font:700 34px/1 var(--mono);color:var(--live);min-width:2.6ch;text-align:center;font-variant-numeric:tabular-nums}
.tt-timer.low{color:#ff6b6b}

/* typing test: results card */
.tt-results{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:30px;min-height:9rem;padding:20px 10px}
.tt-result{text-align:center;min-width:104px}
.tt-result__num{font:700 46px/1 var(--mono);color:var(--live);font-variant-numeric:tabular-nums}
.tt-result__num.good{color:var(--tested)}
.tt-result__label{font:500 12px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-top:10px}
.tt-results .icon-btn{margin-left:6px}
@media(max-width:680px){.tt-result__num{font-size:36px}}

/* typing test: personal best */
.tt-best-line{flex-basis:100%;text-align:center;color:var(--muted);font:600 14px/1 var(--mono);min-height:1em;margin-top:4px}
.tt-badge{display:inline-block;background:var(--tested-dim);color:var(--tested);border:1px solid rgba(55,224,176,.4);padding:7px 14px;border-radius:999px;font:600 13px/1 var(--mono)}
.tt-reset-best{flex-basis:100%;appearance:none;background:none;border:0;color:var(--muted);cursor:pointer;font:500 12px/1 var(--sans);text-decoration:underline;padding:2px}
.tt-reset-best:hover{color:var(--ink)}

/* typing test: mode toggle */
.tt-modes{display:flex;gap:4px;background:var(--bg-2);border:1px solid var(--line);border-radius:12px;padding:4px}
.tt-mode{appearance:none;border:0;cursor:pointer;background:transparent;color:var(--muted);font:600 13px/1 var(--sans);padding:8px 14px;border-radius:9px;transition:color .15s,background .15s}
.tt-mode:hover{color:var(--ink)}
.tt-mode.is-active{background:var(--surface);color:var(--ink);box-shadow:0 1px 0 rgba(0,0,0,.4)}
.tt-durations[hidden]{display:none}