/* Layout: Swiss grid on flat navy. Header + rule, needle gauge, target/total readout, 3 lock slots, 3x2 tile grid, one flat brass button. */
:root{
  --bg:#13283a;        /* flat navy */
  --ink:#eef2f4;
  --muted:#9db3c2;
  --brass:#e2ad48;     /* accent */
  --track:#1f3a50;
  --slot:#1a3347;
  --face:#f4ecdc;      /* tile face */
  --face-ink:#1c2a35;
  --needle:#e5533a;
  --good:#5cc489; --warn:#e6b84a; --bad:#e5533a;
  --font:"Inter Tight", system-ui, -apple-system, "Segoe UI", sans-serif;
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html,body{min-height:100%}
body{background:var(--bg);color:var(--ink);font-family:var(--font);font-size:15px;
  padding-left:max(16px, env(safe-area-inset-left, 0px));padding-right:max(16px, env(safe-area-inset-right, 0px));padding-block:16px 40px}
.wrap{max-width:480px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.game{display:flex;flex-direction:column;gap:12px}
header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:10px;border-bottom:2px solid var(--ink)}
.logo{font-weight:800;font-size:26px;letter-spacing:-.03em;line-height:1}
.logo i{font-style:normal;color:var(--good)}
.meta{display:flex;align-items:center;gap:12px;white-space:nowrap;font-size:13px;font-weight:600;font-variant-numeric:tabular-nums}
.meta .sc{color:var(--muted);font-weight:500}
.meta .sc b{color:var(--ink);font-weight:700}
.icon-btn{background:none;border:1.5px solid #3a5468;color:var(--muted);width:32px;height:28px;cursor:pointer;font-size:13px}
.icon-btn:focus-visible,button:focus-visible,.tile:focus-visible{outline:2px solid var(--ink);outline-offset:2px}

/* gauge + readout */
.instrument svg{display:block;width:100%;height:auto}
.readout{display:flex;justify-content:space-between;align-items:flex-end;gap:10px;margin-top:10px}
.readout .lbl{font-size:10.5px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.readout .num{font-weight:800;font-size:34px;letter-spacing:-.04em;line-height:1;font-variant-numeric:tabular-nums}
.readout .target .num{color:var(--good);font-size:48px}
.readout .total{text-align:right}
.readout .pts{display:flex;justify-content:flex-end;align-items:baseline;gap:5px;margin-top:4px;opacity:0;transform:scale(.6);transform-origin:right center;transition:opacity .25s, transform .35s cubic-bezier(.3,1.6,.5,1)}
.readout .pts.on{opacity:1;transform:none}
.readout .pts .num{font-size:30px}
.verdict{min-height:22px;font-weight:800;font-size:16px;letter-spacing:-.01em;margin-top:6px;transition:color .3s;white-space:nowrap}
.verdict.cal{font-size:22px;letter-spacing:.08em;text-transform:uppercase}
@keyframes gflash{0%{opacity:0}18%{opacity:.95}45%{opacity:.6}100%{opacity:0}}
@keyframes gglow{0%{opacity:0}20%{opacity:1}100%{opacity:.55}}
#gFlash.go{animation:gflash 1.4s ease-out}
#gGlow.go{animation:gglow 1.4s ease-out forwards}
.thud{transform-origin:right center!important}

/* slots */
.slots{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.slot{position:relative;min-height:104px;background:var(--slot);display:flex}
.slot::before{content:attr(data-n);position:absolute;left:8px;top:6px;font-size:11px;font-weight:700;color:#4e6b82}
.slot .tile{flex:1}
.hint{font-size:13px;color:var(--muted);margin:0}

/* tiles */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.cell{min-height:104px;display:flex}
.cell:empty{outline:1.5px dashed #2c475c;outline-offset:-1.5px}
.tile{position:relative;width:100%;min-height:104px;perspective:700px;cursor:pointer;border:0;padding:0;background:none;color:inherit;font:inherit;text-align:left;-webkit-tap-highlight-color:transparent}
.tile[disabled]{cursor:default}
.card{position:absolute;inset:0;transform-style:preserve-3d;transition:transform .55s cubic-bezier(.3,1.4,.5,1)}
.tile.flipped .card{transform:rotateY(180deg)}
.face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;display:flex;flex-direction:column;align-items:flex-start;justify-content:flex-end;gap:3px;padding:9px 9px;
  background:var(--face);color:var(--face-ink)}
.face .q{font-size:13px;font-weight:600;line-height:1.2}
.face .u{font-size:10px;font-weight:600;color:#6a7680;text-transform:uppercase;letter-spacing:.08em}
.back{transform:rotateY(180deg);background:#2a4a63;color:var(--ink);justify-content:space-between}
.back .v{font-weight:800;font-size:28px;letter-spacing:-.04em;line-height:1;font-variant-numeric:tabular-nums}
.back .q{font-size:10.5px;font-weight:600;opacity:.7}
.tile:not([disabled]):hover .front{transform:translateY(-2px)}
.front{transition:transform .15s}
.tile.perfect .face{box-shadow:inset 0 0 0 3px var(--good)}
.tile.perfect .back{background:var(--good);color:var(--bg)}

.actions{display:flex;gap:8px}
.lever{flex:1;display:flex;justify-content:space-between;align-items:center;font-family:var(--font);font-weight:800;font-size:17px;padding:15px 16px;border:0;cursor:pointer;text-align:left;
  background:#2a4a63;color:var(--ink);transition:opacity .35s, transform .35s, filter .2s, background .2s}
.lever:not([disabled]):hover{background:#33587a}
.lever span{font-weight:600;opacity:.8}
.lever:active{transform:translateY(2px)}
.lever[disabled]{background:transparent;color:#6f8ba0;box-shadow:inset 0 0 0 1.5px #2c475c;cursor:not-allowed}
.lever.ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 2px var(--ink)}
.lever.off{opacity:0;transform:translateY(6px);pointer-events:none}

/* results */
.results{display:flex;flex-direction:column;gap:12px;font-variant-numeric:tabular-nums}
.lbl2{font-size:10.5px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.scores{display:grid;grid-template-columns:1fr 1fr;border-bottom:2px solid var(--ink);padding-bottom:12px}
.sc-b{display:flex;flex-direction:column;gap:4px}
.sc-b+.sc-b{border-left:1px solid #ffffff22;padding-left:14px}
.sc-n{font-weight:800;font-size:52px;letter-spacing:-.05em;line-height:.9}
.sc-n small{font-size:17px;color:var(--muted);letter-spacing:-.02em;margin-left:2px}
.g{color:var(--good)}
.dials{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.dial{background:#0e2131;padding:10px 6px 9px;display:flex;flex-direction:column;align-items:center;gap:3px}
.dial svg{width:100%;height:auto;display:block}
.dial .r{font-size:9.5px;font-weight:700;letter-spacing:.1em;color:var(--muted)}
.dial .p{font-weight:800;font-size:20px;letter-spacing:-.03em}
.dial .o{font-size:11px;font-weight:600;color:var(--muted)}
.review{display:flex;flex-direction:column;gap:8px}
.rv{background:#0e2131;padding:12px;display:flex;flex-direction:column;gap:8px}
.rv .h{display:flex;justify-content:space-between;align-items:baseline}
.rv .h b{font-weight:800;font-size:16px}
.cols{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.col{display:flex;flex-direction:column;gap:5px;min-width:0}
.col .ct{font-size:9.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);padding-bottom:4px;border-bottom:1px solid #ffffff22}
.it{display:flex;justify-content:space-between;gap:6px;font-size:12px;line-height:1.25}
.it span{min-width:0;color:var(--muted)}
.it b{font-weight:800;white-space:nowrap}
.it.hit span{color:var(--ink)}
.it.hit b,.col.best .it b{color:var(--good)}
.it.hit span::before{content:"\2713  ";color:var(--good);font-weight:800}
.tot{display:flex;justify-content:space-between;align-items:baseline;font-size:13px;font-weight:800;border-top:1px solid #ffffff22;padding-top:5px;margin-top:auto}
.tot em{font-style:normal;font-weight:600;color:var(--muted);font-size:11px}
.pf{font-size:12.5px;font-weight:700;color:var(--good)}
.lever.share{background:var(--good);color:var(--bg)}
.lever.share:hover{background:#6fd49a}
.next{margin:0;text-align:center;font-size:13px;color:var(--muted)}
.next b{color:var(--ink)}
pre.share{margin:0;background:#0e2131;padding:12px;font-family:ui-monospace,Menlo,monospace;font-size:12.5px;white-space:pre-wrap;color:var(--ink)}
.note{font-size:12px;color:var(--muted);margin:0}
.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom, 0px));transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:8px 14px;font-weight:600;font-size:13px;opacity:0;transition:opacity .25s;pointer-events:none}
.toast.on{opacity:1}
/* how to play */
/* live demo */
.demo{position:relative;height:288px;background:#0e2131;margin:0 -2px;overflow:hidden}
.d-top{position:absolute;left:10px;right:10px;top:8px;display:grid;grid-template-columns:1fr auto 1fr;align-items:end;gap:6px}
.d-l{font-size:9px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.d-t{font-size:24px;font-weight:800;letter-spacing:-.04em;line-height:1;color:var(--good)}
.d-n{font-size:20px;font-weight:800;letter-spacing:-.03em;line-height:1;font-variant-numeric:tabular-nums}
.d-g{width:96px;height:auto;display:block}
.d-slot,.dt{position:absolute;width:calc((100% - 20px)*.31);height:46px}
.d-slot{top:70px;background:#1a3347}
.dt{transition:left .35s cubic-bezier(.2,.9,.3,1.1), top .35s cubic-bezier(.2,.9,.3,1.1);perspective:500px}
.dt .in{position:absolute;inset:0;transform-style:preserve-3d;transition:transform .45s cubic-bezier(.3,1.4,.5,1)}
.dt.up .in{transform:rotateY(180deg)}
.dt .f,.dt .b{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;display:flex;align-items:flex-end;padding:5px 6px;font-size:10px;font-weight:600;line-height:1.15}
.dt .f{background:var(--face);color:var(--face-ink)}
.dt .b{transform:rotateY(180deg);background:#2a4a63;color:var(--ink);font-size:17px;font-weight:800;letter-spacing:-.03em;align-items:center}
.dt.win .b{background:var(--good);color:var(--bg)}
.d-lock{position:absolute;left:10px;right:10px;bottom:10px;height:30px;display:flex;align-items:center;padding:0 10px;font-size:12px;font-weight:800;box-shadow:inset 0 0 0 1.5px #2c475c;color:#6f8ba0;transition:all .25s}
.d-lock.on{background:#2a4a63;color:var(--ink);box-shadow:none}
.d-lock.off{opacity:0}
.d-finger{position:absolute;width:26px;height:26px;margin:-13px 0 0 -13px;border-radius:50%;background:#ffffffcc;box-shadow:0 0 0 6px #ffffff33;left:50%;top:300px;transition:left .45s cubic-bezier(.3,.8,.3,1), top .45s cubic-bezier(.3,.8,.3,1), transform .12s, opacity .3s;pointer-events:none;z-index:3}
.d-finger.tap{transform:scale(.7)}
.d-cap{margin:0;font-size:13px;font-weight:600;color:var(--ink);min-height:18px;text-align:center}

.howto{position:fixed;inset:0;z-index:20;background:#0b1a27e6;display:flex;
  padding:calc(16px + env(safe-area-inset-top, 0px)) max(16px, env(safe-area-inset-right, 0px)) calc(16px + env(safe-area-inset-bottom, 0px)) max(16px, env(safe-area-inset-left, 0px));overflow-y:auto}
.howto[hidden]{display:none!important}
.howto-card{width:100%;max-width:420px;margin:auto;background:var(--bg);box-shadow:inset 0 0 0 2px var(--ink);padding:22px 20px 20px;display:flex;flex-direction:column;gap:14px}
.howto-card h2{margin:0;font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);border-top:2px solid var(--ink);padding-top:12px}
.steps{margin:0;padding:0;list-style:none;counter-reset:s;display:flex;flex-direction:column;gap:12px}
.steps li{counter-increment:s;display:grid;grid-template-columns:26px 1fr;gap:10px;font-size:15px;line-height:1.4;color:var(--muted)}
.steps li::before{content:counter(s);font-weight:800;font-size:20px;line-height:1.05;color:var(--good)}
.steps b{color:var(--ink)}
.example{display:flex;justify-content:space-between;align-items:center;gap:10px;background:#0e2131;padding:12px 14px;font-size:18px;font-variant-numeric:tabular-nums;flex-wrap:wrap}
.example .l{font-size:10.5px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.example b{font-weight:800}.example .g{color:var(--good)}
.small{margin:0;font-size:13px;color:var(--muted)}
.lever.play{background:var(--good);color:var(--bg)}
.lever.play:hover{background:#6fd49a}
@keyframes thud{0%{transform:scale(1)}40%{transform:scale(1.06)}100%{transform:scale(1)}}
.thud{animation:thud .35s ease-out;transform-origin:left center}
@media (max-width:380px){.face .q{font-size:12px}.back .v{font-size:23px}}
@media (prefers-reduced-motion:reduce){.card{transition-duration:.01s}.thud{animation:none}}

/* ---------- site additions (beyond the mock-up) ---------- */
.dayline{display:flex;justify-content:space-between;align-items:baseline;font-size:12px;font-weight:600;color:var(--muted);letter-spacing:.02em}
.dayline b{color:var(--ink);font-weight:800}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;text-align:center}
.stats div{background:#0e2131;padding:9px 4px 8px;display:flex;flex-direction:column;gap:2px}
.stats b{font-weight:800;font-size:22px;letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.stats span{font-size:9.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.lever.ghost:hover{background:#ffffff10}
.coffee{display:flex;align-items:center;justify-content:center;gap:8px;font-size:13px;font-weight:600;color:var(--muted);text-decoration:none;padding:6px}
.coffee:hover{color:var(--ink)}
.streak-line{margin:0;font-size:14px;font-weight:700;color:var(--good)}
/* archive */
dialog.archive{border:0;padding:0;background:transparent;color:var(--ink);max-width:420px;width:calc(100% - 32px)}
dialog.archive::backdrop{background:#0b1a27e6}
.arch-card{background:var(--bg);box-shadow:inset 0 0 0 2px var(--ink);padding:18px 16px 16px;display:flex;flex-direction:column;gap:12px;font-family:var(--font)}
.arch-head{display:flex;align-items:center;justify-content:space-between;gap:8px;border-bottom:2px solid var(--ink);padding-bottom:10px}
.arch-head h2{margin:0;font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.cal-nav{display:flex;align-items:center;justify-content:space-between;font-weight:800;font-size:16px}
.cal-nav button{background:none;border:1.5px solid #3a5468;color:var(--ink);width:34px;height:30px;cursor:pointer;font:inherit}
.cal-nav button[disabled]{opacity:.3;cursor:default}
.cal-dow,.cal-days{display:grid;grid-template-columns:repeat(7,1fr);gap:4px;text-align:center}
.cal-dow span{font-size:10px;font-weight:700;letter-spacing:.08em;color:var(--muted)}
.cal-day{aspect-ratio:1;border:0;background:#0e2131;color:var(--ink);font-family:var(--font);cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;padding:0}
.cal-day b{font-size:14px;font-weight:800}
.cal-day small{font-size:9.5px;font-weight:600;color:var(--muted);font-variant-numeric:tabular-nums}
.cal-day[disabled]{background:transparent;color:#3a5468;cursor:default}
.cal-day.done{background:#2a4a63}
.cal-day.done small{color:var(--good)}
.cal-day.today{box-shadow:inset 0 0 0 2px var(--good)}
.cal-day.current{outline:2px solid var(--ink);outline-offset:-2px}
.arch-note{margin:0;font-size:12px;color:var(--muted)}