@import url('https://fonts.googleapis.com/css2?family=DM+Sans:opsz,wght@9..40,400..700&family=Fraunces:ital,opsz,wght@0,9..144,300..700;1,9..144,300..700&family=Manrope:wght@500..800&display=swap');
/* Warm paper for home and dialogs, a deep jade felt for play. Both themes share one set of roles. */
:root{
  color-scheme:light;
  --page:#f5f2ea;
  --surface:#fffdf8;
  --surface-2:#f0ece2;
  --line:#e4dfd2;
  --line-strong:#d6cfbf;
  --ink:#1c3530;
  --ink-2:#4b5f58;
  --muted:#5f6b64;
  --accent:#1f5546;
  --accent-hover:#18473a;
  --accent-ink:#f8f5ec;
  --accent-soft:#e5ede5;
  --primary:#1f5546;
  --primary-hover:#18473a;
  --primary-ink:#f8f5ec;
  --brand-ink:#1f5546;
  --brand-dot:#b08a3a;
  --focus:#c99434;
  --shadow-card:0 1px 2px #1c35300a,0 6px 20px -8px #1c35301f;
  --felt:#2a6152;
  --felt-hi:#357061;
  --felt-lo:#225446;
  --felt-ink:#f0f1e6;
  --felt-muted:#b2c8bc;
  --felt-soft:#ffffff1c;
  --felt-soft-hover:#ffffff1f;
  --felt-line:#ffffff14;
  --glow:#d8ec9f;
  --tile:#f8f4e8;
  --tile-top:#fffdf6;
  --tile-ink:#1d3a32;
  --tile-edge:#d9cfb6;
  --tile-edge-2:#97845a;
  --raised-top:#fffef9;
  --raised-edge:#e9e0c9;
  --seam:#fffcf2;
  --seam-blocked:#dfe5d8;
  --tile-base:#1f5042;
  --tile-shadow:#04201860;
  --blocked:#c0c9b8;
  --blocked-top:#c8d0c0;
  --blocked-ink:#2f392d;
  --blocked-edge:#98a28d;
  --blocked-edge-2:#717b67;
  --blocked-base:#244f42;
  --selected:#d6ecae;
  --selected-edge:#2f7d57;
  --selected-ring:#fff6d6;
  --hinted:#f8e6ae;
  --hint-ring:#efc760;
  --hint-edge:#c99a32;
  --wrong:#f4cdbf;
  --wrong-ring:#e9937a;
  --success:#3f7a58;
  font-family:'DM Sans',system-ui,-apple-system,'Segoe UI',sans-serif;
  color:var(--ink);
  background:var(--page);
  font-synthesis:none;
  -webkit-font-smoothing:antialiased;
}
:root[data-theme="dark"]{
  color-scheme:dark;
  --page:#111614;
  --surface:#142520;
  --surface-2:#1c3029;
  --line:#284038;
  --line-strong:#38433e;
  --ink:#eceae1;
  --ink-2:#c2c8c1;
  --muted:#a7b0a9;
  --accent:#a3d2b8;
  --accent-hover:#b6dec8;
  --accent-ink:#0f2a22;
  --accent-soft:#1e2c26;
  --primary:#2f7a5c;
  --primary-hover:#378a68;
  --primary-ink:#f6f4ec;
  --brand-ink:#e6e4da;
  --brand-dot:#d2ad5b;
  --focus:#e0b153;
  --shadow-card:0 1px 2px #0000004d,0 10px 24px -12px #00000080;
  --felt:#0f2b25;
  --felt-hi:#163a32;
  --felt-lo:#0b221d;
  --felt-ink:#ecece2;
  --felt-muted:#b8c9bf;
  --felt-soft:#ffffff0f;
  --felt-soft-hover:#ffffff1a;
  --felt-line:#ffffff10;
  --glow:#c4e08c;
  --tile:#e4ddcb;
  --tile-top:#ece6d6;
  --tile-ink:#1b3029;
  --tile-edge:#ada590;
  --tile-edge-2:#6e6550;
  --raised-top:var(--tile-top);
  --raised-edge:#c6bea8;
  --seam:#f2ecdcd9;
  --seam-blocked:#9db0a1;
  --tile-base:#285444;
  --tile-shadow:#000000a0;
  --blocked:#728676;
  --blocked-top:#788c7b;
  --blocked-ink:#122019;
  --blocked-edge:#4f6457;
  --blocked-edge-2:#3a4f43;
  --blocked-base:#1f4236;
  --selected:#d2e8a9;
  --selected-edge:#2f7d57;
  --selected-ring:#fff3cf;
  --hinted:#eed596;
  --hint-ring:#e6bb57;
  --hint-edge:#b98a26;
  --wrong:#ebb9a8;
  --wrong-ring:#d9826a;
  --success:#a3d2b8;
}

*{box-sizing:border-box}
html{-webkit-tap-highlight-color:transparent;-webkit-text-size-adjust:100%;overscroll-behavior:none}
body{margin:0;background:var(--page)}
[hidden]{display:none!important}
button,a{touch-action:manipulation}
button{font:inherit;cursor:pointer;color:inherit}
button:focus-visible,a:focus-visible,select:focus-visible{outline:3px solid var(--focus);outline-offset:3px}
button:disabled{opacity:.38;cursor:default}
button:active:not(:disabled){transform:translateY(1px)}
h1,h2{font-family:Fraunces,Georgia,serif;font-weight:500;font-optical-sizing:auto;margin:0}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}

/* Home fits one viewport; dialogs own their own scrolling. */
html,body{height:100%;overflow:hidden}
.app{max-width:1040px;margin:auto;padding:0 40px max(16px,env(safe-area-inset-bottom));height:100dvh;display:flex;flex-direction:column;overflow:hidden}
.app>header{flex:none;height:88px;display:flex;align-items:center;justify-content:space-between}
.app>main{flex:1;min-height:0;display:flex;flex-direction:column;overflow:hidden;overscroll-behavior:none}
.home-screen{flex:none}
main>footer{flex:none;margin-top:auto}

/* Brand: the same two-bar tile as the app icon. */
.brand-area{position:relative}
button.brand{border:0;background:transparent;padding:4px 6px 4px 0;min-height:44px;display:flex;align-items:center;gap:11px;border-radius:12px}
.brand-mark{position:relative;display:grid;align-content:center;justify-items:center;gap:5px;width:30px;height:36px;border-radius:8px;background:linear-gradient(180deg,#fffdf6,#f3eedf);box-shadow:inset 0 0 0 1px #00000010,0 3px 0 #d9cfb6,0 5px 0 var(--felt),0 8px 12px -6px #0f2a2266}
.brand-mark i{display:block;width:14px;height:3px;border-radius:2px;background:var(--felt)}
:root:not([data-theme="dark"]) .brand-mark{background:var(--brand-ink);box-shadow:0 4px 0 var(--tile-base),0 10px 18px -8px #0f2a2290}
:root:not([data-theme="dark"]) .brand-mark i{background:#f4efdc}
.brand-word{font-family:Manrope,sans-serif;font-size:26px;font-weight:800;letter-spacing:-1.2px;color:var(--brand-ink);line-height:1}
.brand-dot{color:var(--brand-dot)}
.header-actions{display:flex;gap:10px}
.icon-button{display:grid;place-items:center;border:1px solid var(--line-strong);background:var(--surface);color:var(--ink);width:44px;height:44px;border-radius:50%;padding:0;box-shadow:0 1px 2px #1c35300d}

/* Home */
.home-hero{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:28px 0 36px}
.hero-copy{min-width:0}
.home-hero h1{font-size:clamp(34px,5vw,56px);line-height:1.04;letter-spacing:-.025em;outline:none;font-variation-settings:'SOFT' 50}
.home-hero h1 em{font-style:italic;font-weight:400;color:var(--accent)}
.home-hero p{color:var(--muted);font-size:16px;line-height:1.5;margin:14px 0 0}
.home-tiles{position:relative;width:236px;height:150px;flex:none}
.home-tiles span{position:absolute;display:grid;place-items:center;width:92px;height:112px;border-radius:14px;background:linear-gradient(180deg,var(--tile-top),var(--tile) 70%);color:var(--tile-ink);box-shadow:inset 0 1px 0 #ffffffcc,0 5px 0 var(--tile-edge),0 9px 0 var(--tile-base),0 18px 28px -14px #1c3530a0;font-family:Manrope,sans-serif;font-weight:700;font-size:34px;letter-spacing:-.02em;left:20px;top:8px;transform:rotate(-8deg)}
.home-tiles span:nth-child(2){left:126px;top:22px;transform:rotate(7deg);font-size:24px;word-spacing:-.1em}
.home-tiles span:nth-child(3){left:100px;top:98px;width:42px;height:42px;border-radius:50%;background:var(--felt);color:var(--glow);font-size:24px;font-weight:600;transform:none;box-shadow:0 0 0 5px var(--page),0 6px 14px -4px #0f2a2266;z-index:2}

.eyebrow{display:block;font-size:11px;font-weight:700;letter-spacing:.12em;text-transform:uppercase}
.resume-panel{position:relative;overflow:hidden;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 20px 20px 24px;margin-bottom:30px;border-radius:20px;background:radial-gradient(120% 160% at 0% 0%,var(--felt-hi),var(--felt) 55%,var(--felt-lo));color:var(--felt-ink);box-shadow:0 10px 20px -14px #0f2a2299}
.resume-panel .eyebrow{color:var(--glow);margin-bottom:6px}
.resume-panel h2{font-size:21px;letter-spacing:-.01em;margin:0 0 4px}
.resume-panel p{margin:0;font-size:13px;color:var(--felt-muted);font-variant-numeric:tabular-nums}
.resume-panel .primary{width:auto;margin:0;flex:none;padding:0 22px;min-height:48px;background:var(--tile-top);color:var(--tile-ink);box-shadow:0 2px 0 var(--tile-edge)}

.section-heading{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin:0 0 14px}
.section-heading h2{font-size:22px;letter-spacing:-.01em}
.section-heading>span{font-size:13px;color:var(--muted)}

.level-options{display:grid;gap:10px}
.level-card{display:grid;grid-template-columns:auto 1fr auto;grid-template-areas:'bars name go' 'bars meta go';column-gap:18px;row-gap:3px;align-items:center;text-align:left;width:100%;padding:16px 18px 16px 20px;border-radius:18px;border:1px solid var(--line);background:var(--surface);color:var(--ink);box-shadow:var(--shadow-card);transition:transform .18s cubic-bezier(.23,1,.32,1),box-shadow .18s,border-color .18s}
.level-card.current{border-color:var(--line-strong);box-shadow:inset 4px 0 0 var(--accent),var(--shadow-card)}
.level-card.current .level-meta::before{content:'Current table · ';font-weight:700;color:var(--accent)}
.difficulty-bars{grid-area:bars;display:flex;align-items:flex-end;gap:3px;height:22px;padding:9px;box-sizing:content-box;border-radius:12px;background:var(--surface-2)}
.difficulty-bars i{display:block;width:5px;height:9px;background:currentColor;border-radius:2px;opacity:.2}
.difficulty-bars i:nth-child(2){height:15px}
.difficulty-bars i:nth-child(3){height:22px}
.difficulty-bars i.lit{opacity:1}
.difficulty-bars i.lit{color:var(--accent)}
.level-title{grid-area:name;display:flex;align-items:center;flex-wrap:wrap;gap:4px 10px;min-width:0}
.level-card strong{font-family:Fraunces,Georgia,serif;font-weight:500;font-size:21px;letter-spacing:-.01em;line-height:1.15}
.level-detail{font-size:11.5px;font-weight:600;line-height:1;padding:5px 8px;border-radius:99px;background:var(--surface-2);color:var(--muted);white-space:nowrap}
.level-meta{grid-area:meta;display:block;font-size:13px;line-height:1.4;color:var(--muted)}
.play-label{grid-area:go;display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--accent)}
.play-label svg{display:block;flex:none;width:32px;height:32px;padding:8px;border-radius:50%;background:var(--accent-soft)}

.stats-section{margin-top:30px}
.stats-card{padding:18px 22px;border-radius:20px;border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow-card)}
.clear-progress{display:flex;align-items:center;gap:24px}
.clear-total{display:flex;flex-direction:column;gap:4px;flex:none}
.clear-total strong{font-family:Fraunces,Georgia,serif;font-size:32px;line-height:1.1;font-weight:500;font-variant-numeric:lining-nums tabular-nums;letter-spacing:-.01em}
.clear-total span{font-size:12px;color:var(--muted)}
.clear-milestone{flex:1;min-width:0}
.player-level{display:block;font-size:12px;font-weight:600;margin-bottom:8px}
.milestone-track{height:6px;border-radius:99px;background:var(--surface-2);overflow:hidden}
.milestone-track>span{display:block;height:100%;width:0;background:var(--accent);border-radius:inherit}
.clear-milestone p{font-size:12px;color:var(--muted);margin:8px 0 0}
.milestone-celebration{margin:20px 0;padding:16px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.milestone-celebration p{margin:0 0 10px}
.milestone-celebration strong{color:var(--ink);font-family:Fraunces,Georgia,serif;font-size:22px;font-weight:500}
.best-times{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}
.best-times>span{display:flex;flex-direction:column;gap:3px;min-width:0}
.best-times b{font-family:Manrope,sans-serif;font-size:15px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums}
.stats-note{font-size:12px;color:var(--muted);margin:12px 0 0}

footer{display:flex;justify-content:center;align-items:center;color:var(--muted);font-size:12px;padding:20px 2px 12px}
footer span{display:flex;align-items:center;gap:9px}
footer i{width:6px;height:6px;border-radius:50%;background:var(--brand-dot);opacity:.8}

/* Desktop: levels and progress sit side by side. */
@media(min-width:880px){
  .app>header{height:80px}
  .home-screen{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);column-gap:28px;align-items:stretch}
  .home-hero,.resume-panel{grid-column:1 / -1}
  .home-hero{padding:8px 0 28px}
  .resume-panel{margin-bottom:28px}
  .stats-section{margin-top:0;display:flex;flex-direction:column}
  .stats-card{flex:1;display:flex;flex-direction:column;justify-content:space-between}
  main[data-home-density] .stats-section{margin-top:0}
  .level-card{padding:16px 20px 16px 22px}
  .level-meta{font-size:14px}
  .level-detail{font-size:12.5px}
  .clear-total span,.best-times{font-size:13px}
  main>footer{padding:8px 2px 2px}
  .stats-card{padding:22px 24px}
}
@media(max-width:879px){.home-screen{flex:none;display:flex;flex-direction:column}.home-screen::before{content:'';flex:none;height:10px}
main>footer{margin-top:0}
.level-options{gap:10px}
.play-text{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}}

/* The play table owns the viewport; home keeps its normal document flow. */
html.playing,html.playing body{height:100%;overflow:hidden;overscroll-behavior:none;background:var(--felt)}
.playing .app>header,.playing main>footer{display:none}
.game-screen{position:fixed;inset:0;height:100dvh;overflow:hidden;background:var(--felt);z-index:2}
.game{height:100%;width:100%;display:flex;flex-direction:column;color:var(--felt-ink);background:radial-gradient(90% 60% at 50% 45%,var(--felt-hi) 0%,var(--felt) 62%,var(--felt-lo) 100%);padding-top:env(safe-area-inset-top);padding-left:env(safe-area-inset-left);padding-right:env(safe-area-inset-right)}
.play-nav,.game-top,.tools{width:100%;max-width:760px;margin:0 auto}
.play-nav{flex:none;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:10px;padding:10px 16px 6px}
.play-actions{display:flex;justify-content:flex-end;align-items:center;gap:8px}
.play-button{background:var(--felt-soft);border:0;border-radius:14px;min-height:44px;min-width:44px;padding:0 14px;color:var(--felt-ink);font-size:14px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;gap:4px;line-height:1.2;white-space:nowrap}
.play-back{justify-self:start;padding-left:9px}
.play-icon,.play-new{padding:0;width:44px}
.new-label{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.play-chevron{display:block;flex:none}
.play-brand{justify-self:center;font-family:Manrope,sans-serif;font-weight:800;font-size:20px;letter-spacing:-1px;color:var(--felt-ink)}
.play-brand span{color:var(--glow)}
.level{display:flex;align-items:center;gap:8px;margin-right:auto;font-size:14px;font-weight:600;color:var(--felt-ink);white-space:nowrap}
.tiny-dot{width:7px;height:7px;margin-left:3px;border-radius:50%;background:var(--glow);box-shadow:0 0 0 3px #d8ec9f26}
.game-top{flex:none;padding:8px 20px 6px}
.metrics{display:flex;align-items:center;gap:14px}
.pairs-count{white-space:nowrap;font-size:13px;color:var(--felt-muted)}
.pairs-count b{font-family:Manrope,sans-serif;font-size:18px;font-weight:700;color:var(--felt-ink);font-variant-numeric:tabular-nums;margin-right:1px}
.progress{height:4px;margin-top:8px;border-radius:99px;background:#ffffff14;overflow:hidden}
.progress div{height:100%;width:0;border-radius:inherit;background:linear-gradient(90deg,#9fd0a8,var(--glow));transition:width .4s cubic-bezier(.23,1,.32,1)}
.timer-toggle{display:inline-flex;align-items:center;gap:6px;border:0;border-radius:12px;background:transparent;color:var(--felt-muted);min-width:44px;min-height:44px;padding:0 8px;margin-right:-8px;font-size:14px;font-weight:600;font-variant-numeric:tabular-nums}
.timer-toggle svg{flex:none;opacity:.8}
.timer-toggle #time{color:var(--felt-ink)}
/* The obscured time is a frozen sample, with no ticking or blur transition. */
.timer-obscured{filter:blur(5px);opacity:.6}
.timer-toggle,.timer-toggle:active:not(:disabled){transform:none;transition:none}

.table{position:relative;flex:1;min-height:0;display:flex;flex-direction:column;padding:12px 20px 0;touch-action:none}
.board-space{flex:1;min-height:0;container-type:size;display:grid;place-items:center}
.board{--columns:5;--rows:7;--board-w:min(100cqw,calc(100cqh * var(--columns) / (var(--rows) - .6)),720px);position:relative;width:var(--board-w);height:min(100cqh,calc(var(--board-w) * (var(--rows) + 1.6) / var(--columns)));container-type:inline-size;margin:0}

/* Tiles: ivory face, bone side and a jade back, like a real mahjong tile. */
.tile{position:absolute;--gap-y:14px;--tile-h:calc((98.4% - (var(--rows) - 1) * var(--gap-y)) / var(--rows));left:calc(var(--x) * 100% / var(--columns) + 1.25%);top:calc(var(--y) * (var(--tile-h) + var(--gap-y)) + .3%);width:calc(87.5% / var(--columns));height:var(--tile-h);z-index:calc(var(--z) * 10 + 1);border:0;padding:0;border-radius:clamp(6px,1.9cqw,13px);background:linear-gradient(180deg,var(--tile-top) 0%,var(--tile) 75%);color:var(--tile-ink);box-shadow:inset 0 1px 0 #ffffffd9,inset 0 -2px 0 #0000000a,0 8px 0 var(--tile-edge),0 11px 8px -6px var(--tile-shadow);font-family:Manrope,sans-serif;font-weight:700;font-size:clamp(11px,calc(25.5cqw / var(--columns)),33px);letter-spacing:-.02em;word-spacing:-.06em;font-variant-numeric:lining-nums;line-height:1;display:flex;align-items:center;justify-content:center;white-space:nowrap;transition:transform .16s cubic-bezier(.23,1,.32,1),box-shadow .16s,background .16s,color .16s}
.board[data-long="true"] .tile{font-size:clamp(10px,calc(22.5cqw / var(--columns)),30px);letter-spacing:-.03em}

.tile.raised{background:linear-gradient(180deg,var(--raised-top) 0%,var(--tile-top) 60%,var(--tile) 100%);box-shadow:inset 0 2px 0 #ffffffcc,inset 0 -2px 0 #0000000a,0 3px 3px -1px #00000047,0 3.5px 0 var(--raised-edge),0 5px 0 var(--seam),0 10px 0 var(--tile-edge-2),0 13px 8px -6px var(--tile-shadow)}
.tile.raised.blocked{background:linear-gradient(180deg,var(--blocked-top),var(--blocked) 75%);box-shadow:inset 0 1px 0 #ffffff40,0 2.5px 0 var(--blocked-edge),0 4px 0 var(--seam-blocked),0 8px 0 var(--blocked-edge-2),0 10px 7px -6px var(--tile-shadow)}
.tile.blocked{background:linear-gradient(180deg,var(--blocked-top),var(--blocked) 75%);color:var(--blocked-ink);box-shadow:inset 0 1px 0 #ffffff40,0 5px 0 var(--blocked-edge),0 8px 7px -6px var(--tile-shadow);cursor:default}
.tile.selected{background:var(--selected);color:var(--tile-ink);transform:translateY(-3px);box-shadow:inset 0 0 0 2.5px var(--selected-edge),inset 0 0 0 4px #ffffff8c,0 0 0 1.5px var(--selected-ring),0 8px 0 var(--tile-edge),0 14px 14px -6px var(--tile-shadow)}
.tile.hinted{background:var(--hinted);color:var(--tile-ink);box-shadow:inset 0 0 0 2px var(--hint-edge),0 0 0 1.5px var(--hint-ring),0 8px 0 var(--tile-edge),0 11px 8px -6px var(--tile-shadow)}

.tile.wrong{background:var(--wrong);color:var(--tile-ink);box-shadow:0 0 0 3px var(--wrong-ring),0 3px 0 var(--tile-edge),0 5px 0 var(--tile-base);animation:wrong-shake .34s ease-in-out}

@keyframes wrong-shake{25%{transform:translateX(-3px)}75%{transform:translateX(3px)}}
.table-message{flex:none;min-height:44px;display:flex;align-items:center;justify-content:center;text-align:center;padding:6px 8px;margin:0;font-size:14px;line-height:1.4;color:var(--felt-ink);opacity:.86}

.tools{flex:none;display:grid;grid-template-columns:repeat(3,1fr);gap:10px;padding:6px 16px max(14px,env(safe-area-inset-bottom));max-width:560px}
.tools button{position:relative;min-height:54px;border:1px solid var(--felt-line);border-radius:18px;background:var(--felt-soft);color:var(--felt-ink);display:flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;padding:0 10px}
.tools button svg{flex:none;opacity:.9}
.tools small{min-width:22px;height:22px;display:inline-grid;place-items:center;padding:0 6px;border-radius:99px;background:var(--glow);color:#183a2f;font-size:12px;font-weight:700;font-variant-numeric:tabular-nums}

/* Dialogs */
dialog{border:0;border-radius:26px;background:var(--surface);color:var(--ink);max-width:440px;width:calc(100% - 32px);max-height:calc(100dvh - 32px);overflow:auto;padding:30px 28px 26px;box-shadow:0 30px 80px -20px #0a1f1a80,0 0 0 1px #0000000a}
:root[data-theme="dark"] .level-detail{color:var(--ink-2)}
:root[data-theme="dark"] .icon-button{border-color:var(--line)}
:root[data-theme="dark"] .resume-panel{background:radial-gradient(120% 160% at 0% 0%,#2c6a59,#215546 55%,#1a4a3d);box-shadow:inset 0 0 0 1px #a3d2b824,0 10px 24px -14px #000000b0}
:root[data-theme="dark"] dialog{box-shadow:0 30px 80px -20px #000000c0,0 0 0 1px #ffffff0d}
dialog::backdrop{background:#0a100e8c;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.close{position:absolute;right:16px;top:16px;width:40px;height:40px;background:var(--surface-2);border-color:transparent;box-shadow:none;color:var(--ink-2)}
dialog h2{font-size:28px;line-height:1.12;letter-spacing:-.015em;margin:6px 48px 14px 0}
dialog p,dialog li{font-size:15px;line-height:1.6;color:var(--ink-2)}
dialog p{margin:0 0 12px}
dialog ul{padding-left:0;margin:16px 0;list-style:none;display:grid;gap:8px}
dialog li{line-height:1.5}
dialog li{position:relative;padding-left:22px}
dialog li::before{content:'';position:absolute;left:4px;top:.62em;width:7px;height:7px;border-radius:2px;background:var(--accent);opacity:.75;transform:rotate(45deg)}
.example{margin:18px 0;padding:18px 14px 14px;border-radius:18px;background:radial-gradient(100% 120% at 50% 30%,var(--felt-hi),var(--felt));color:var(--felt-muted);font-size:22px}
.example-pair{display:flex;align-items:center;justify-content:center;gap:14px;padding-bottom:18px;border-bottom:1px solid var(--felt-line)}
.example b,.demo-tile{display:grid;place-items:center;width:60px;height:56px;padding:0;border-radius:11px;background:linear-gradient(180deg,var(--tile-top),var(--tile) 75%);color:var(--tile-ink);box-shadow:inset 0 1px 0 #ffffffd9,0 8px 0 var(--tile-edge);font-family:Manrope,sans-serif;font-size:18px;font-weight:700;word-spacing:-.08em;white-space:nowrap}
.dialog-levels{margin-top:16px}
.dialog-levels .level-card{box-shadow:none;min-height:88px}
.dialog-levels .level-card.current{box-shadow:inset 4px 0 0 var(--accent)}
.dialog-levels .play-text{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.primary,.mode-option{display:block;width:100%;margin-top:10px;border-radius:16px;font-size:15px}
.primary{min-height:54px;padding:0 18px;border:0;background:var(--primary);color:var(--primary-ink);font-weight:600;text-align:center}
.mode-option{padding:14px 18px;border:1px solid var(--line);background:var(--surface-2);text-align:left;color:var(--ink)}
.mode-option strong{display:block;font-family:Fraunces,Georgia,serif;font-weight:500;font-size:19px}
.mode-option small{display:block;margin-top:3px;font-size:13px;color:var(--muted)}
.modal-secondary{display:block;margin:10px auto 0;min-height:44px;background:transparent;border:0;padding:0 12px;font-size:14px;font-weight:600;color:var(--accent)}
.win-symbol{display:grid;place-items:center;width:64px;height:64px;border-radius:50%;background:var(--accent-soft);color:var(--success);font-size:32px;margin-bottom:12px}
.offline{font-size:12px}
.welcome-mark{flex:none;display:grid;place-items:center;align-content:center;gap:6px;width:42px;height:50px;border-radius:10px;background:var(--felt);color:var(--glow);box-shadow:0 4px 0 var(--tile-base),0 10px 18px -8px #0f2a2290;font-family:Manrope,sans-serif;font-size:30px;font-weight:700;margin:0 0 20px}
.welcome-mark i{display:block;width:18px;height:3.5px;border-radius:2px;background:#f4efdc}
.welcome-head{display:flex;align-items:center;gap:16px;margin:2px 48px 6px 0}
.welcome-head .brand-mark{width:42px;height:50px;gap:6px;border-radius:10px;flex:none}
.welcome-head .brand-mark i{width:18px;height:3.5px}
.welcome-head h2{margin:0;font-family:Manrope,sans-serif;font-weight:800;font-size:26px;letter-spacing:-1.2px;color:var(--brand-ink)}
.welcome-head h2 span{color:var(--brand-dot)}
.welcome-head p{margin:4px 0 0;font-size:14px;color:var(--muted)}
.welcome-actions{margin-top:18px}
.menu-note{font-size:13px!important;line-height:1.55!important;color:var(--muted)!important;margin:14px 0 2px!important}
.help-note{font-size:13px!important;line-height:1.5!important;color:var(--muted)!important;padding:10px 14px;border-radius:12px;background:var(--surface-2)}
.rule-demo{display:flex;justify-content:center;align-items:flex-start;gap:22px;padding-top:16px}
.rule-group{margin:0;display:grid;justify-items:center;gap:12px}
.rule-group figcaption{text-align:center;line-height:1.35;font-size:12.5px;font-weight:600;color:var(--felt-muted)}
.rule-row{display:flex;gap:6px}

.demo-tile.raised{background:linear-gradient(180deg,var(--raised-top) 0%,var(--tile-top) 60%,var(--tile) 100%);box-shadow:inset 0 2px 0 #ffffffcc,0 3px 3px -1px #00000047,0 3.5px 0 var(--raised-edge),0 5px 0 var(--seam),0 10px 0 var(--tile-edge-2)}
.demo-tile.blocked{background:linear-gradient(180deg,var(--blocked-top),var(--blocked) 75%);color:var(--blocked-ink);box-shadow:0 5px 0 var(--blocked-edge)}

.welcome-actions .mode-option{text-align:center;font-weight:600;font-size:15px;min-height:52px}
.install-note{margin:0;border-bottom:1px solid var(--line)}
.install-note summary{cursor:pointer;min-height:56px;display:flex;align-items:center;gap:12px;font-size:15px;font-weight:600;color:var(--ink);list-style:none}
.install-note summary::-webkit-details-marker{display:none}
.install-note summary svg{flex:none;color:var(--accent)}
.install-note summary::after{content:'';margin-left:auto;width:12px;height:12px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%237b857d' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") no-repeat center;margin-right:14px;transition:transform .2s}
.install-note[open] summary::after{transform:rotate(180deg)}
.install-note p{font-size:13.5px!important;line-height:1.5!important;color:var(--muted)!important;margin:-6px 0 14px 32px!important}
.purchase-status{font-size:13px;margin-top:12px;text-align:center}
/* Appearance stays in the menu so the home screen still fits small phones. */
.appearance{margin:18px 0 0;padding:6px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:15px;font-weight:600}
.appearance select{font:inherit;font-weight:600;color:var(--ink);background:var(--surface-2) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%237b857d' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") no-repeat right 12px center;border:1px solid var(--line);border-radius:12px;min-height:44px;padding:0 34px 0 14px;max-width:65%;-webkit-appearance:none;appearance:none}

@media(hover:hover) and (pointer:fine){
  .tile:not(.blocked):not(.selected):not(.hinted):not(.wrong):hover{transform:translateY(-3px);background:var(--tile-top)}
  .level-card:hover{transform:translateY(-2px);border-color:var(--line-strong)}
  .mode-option:hover{border-color:var(--line-strong);background:var(--accent-soft)}
  .primary:hover{background:var(--primary-hover)}
  .resume-panel .primary:hover{background:#fff}
  .icon-button:hover{border-color:var(--muted)}
  .play-button:hover,.tools button:hover:not(:disabled),.timer-toggle:hover{background:var(--felt-soft-hover)}
}

/* Phones */
@media(max-width:600px){
  .app{padding:0 max(18px,env(safe-area-inset-right)) max(10px,env(safe-area-inset-bottom)) max(18px,env(safe-area-inset-left))}
  .app>header{height:calc(68px + env(safe-area-inset-top));padding-top:env(safe-area-inset-top)}
  .brand-word{font-size:24px}
  .home-hero{gap:10px;padding:clamp(10px,2.5dvh,26px) 0 clamp(18px,3dvh,28px)}
  .hero-copy{flex:1}
  .home-hero h1{font-size:clamp(28px,9vw,38px)}
  .home-hero p{font-size:14px;margin-top:10px}
  .home-tiles{display:none}
  .home-tiles span{width:56px;height:70px;border-radius:10px;font-size:24px;left:4px;top:6px;box-shadow:inset 0 1px 0 #ffffffcc,0 3px 0 var(--tile-edge),0 6px 0 var(--tile-base),0 12px 18px -10px #1c3530a0}
  .home-tiles span:nth-child(2){left:54px;top:22px;font-size:15px}
  .home-tiles span:nth-child(3){left:42px;top:66px;width:28px;height:28px;font-size:16px;box-shadow:0 0 0 4px var(--page)}
  .resume-panel{padding:16px 16px 16px 18px;margin-bottom:clamp(22px,3dvh,30px);border-radius:18px}
  .resume-panel h2{font-size:18px}
  .resume-panel p{font-size:12px}
  .resume-panel .primary{padding:0 18px;min-height:46px;font-size:14px}
  .section-heading{margin-bottom:12px}
  .section-heading h2{font-size:20px}
  .section-heading>span{font-size:12px}
  .level-options{gap:8px}
  .level-card{column-gap:14px;padding:10px 12px 10px 14px;border-radius:16px}
  .difficulty-bars{padding:8px;height:20px;border-radius:11px}
  .difficulty-bars i:nth-child(3){height:20px}
  .level-card strong{font-size:19px}
  .level-meta{font-size:12.5px}
  .stats-section{margin-top:clamp(22px,3dvh,30px)}
  .stats-card{padding:14px 18px;border-radius:18px}
  .clear-total strong{font-size:28px}
  .clear-total span{font-size:11.5px}
  .best-times{margin-top:14px;padding-top:12px;font-size:11.5px}
  .best-times b{font-size:14px}
  footer{padding:10px 2px 2px;font-size:12px}
  .play-nav{padding:8px 16px 4px;gap:8px}
  .play-button{padding:0 12px;font-size:14px}
  .play-back{padding-left:7px}
  .play-icon{padding:0}
  .game-top{padding:6px 16px 2px}
  .metrics{gap:12px}
  .table{padding:10px 12px 0}
  .table-message{font-size:13px;min-height:42px}
  .tools{padding:4px 12px max(12px,env(safe-area-inset-bottom));gap:8px}
  .tools button{min-height:52px;font-size:14px;gap:7px;border-radius:16px}
  dialog{padding:26px 22px 22px;border-radius:24px}
  dialog h2{font-size:25px}
  dialog p,dialog li{font-size:14.5px}
  dialog li{font-size:14px}
  .example{margin:14px 0}
  .example-pair{padding-bottom:14px}
  .rule-demo{padding-top:14px;gap:16px}
  .example b,.demo-tile{width:54px;height:50px;font-size:16.5px}
}
@media(max-width:370px){
  .play-brand{display:none}
  .play-button{padding:0 10px;font-size:13px}
  .level{font-size:13px}
  .tools button{font-size:13px;gap:5px}
  .home-tiles{display:none}
  .best-times{font-size:10.5px}
}
@media(max-height:500px) and (orientation:landscape){
  .play-nav{padding-top:2px;padding-bottom:0}
  .game-top{padding-top:0;padding-bottom:0}
  .table-message{min-height:28px;font-size:12px;padding:2px 0}
  .tools{padding-top:0;padding-bottom:max(4px,env(safe-area-inset-bottom))}
  .tools button{min-height:44px}
}

/* Wide screens: status on the left, tools on the right, so the board can use the full height. */
@media(min-width:900px) and (min-aspect-ratio:5/4){
  .game{display:grid;grid-template-columns:minmax(0,1fr) 240px min(calc((100dvh - 140px) * .806),56vw) minmax(0,1fr);grid-template-rows:auto auto auto minmax(0,1fr);column-gap:32px;row-gap:12px}
  .play-nav{grid-column:2 / 4;grid-row:1;max-width:none;display:grid;grid-template-columns:subgrid;padding:14px 0 4px}
  #home{grid-column:1;grid-row:1;justify-self:start}
  .play-brand{grid-column:2;grid-row:1;justify-self:center}
  .play-actions{grid-column:2;grid-row:1;justify-self:end}
  .table{display:contents}
  .board-space{grid-column:3;grid-row:2 / 5;padding:12px 0 52px}
  .board{--board-w:min(100cqw,calc(100cqh * var(--columns) / (var(--rows) - .8)),760px)}
  .game-top,.table-message,.tools{grid-column:2;width:100%;max-width:none;margin:0}
  .game-top{grid-row:2;margin-top:12px;display:flex;flex-direction:column;gap:14px;padding:22px 20px 92px;border-radius:22px;background:var(--felt-soft);border:1px solid var(--felt-line)}
  .metrics{display:contents}
  .level{order:1;margin:0}
  .pairs-count{order:2;font-size:14px}
  .pairs-count b{font-size:44px;line-height:1;margin-right:4px}
  .progress{order:3;margin:0}
  .timer-toggle{order:4;align-self:flex-start;margin:2px 0 0 -8px}
  .table-message{grid-row:2;align-self:end;z-index:1;min-height:0;padding:14px 20px 20px;border-top:1px solid var(--felt-line);justify-content:flex-start;text-align:left;font-size:14px}
  .tools{grid-row:3;display:flex;flex-direction:column;padding:0;gap:10px}
  .tools button{justify-content:flex-start;padding:0 18px;gap:12px;min-height:56px}
  .tools small{margin-left:auto}
  .play-new{width:auto;padding:0 16px 0 12px;gap:6px}
  .new-label{position:static;width:auto;height:auto;overflow:visible;clip-path:none}
}

/* Short phones: trim game chrome so the board keeps its size. */
@media(max-width:600px) and (max-height:720px){
  .play-nav{padding:4px 16px 0}
  .game-top{padding:2px 16px 0}
  .progress{margin-top:4px}
  .table{padding-top:8px}
  .table-message{position:absolute;width:1px;height:1px;min-height:0;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
  .table{padding-bottom:12px}
  .tile{--gap-y:14px}
  .board[data-long="true"] .tile{font-size:clamp(10px,calc(21cqw / var(--columns)),30px)}
  .tools{padding-bottom:max(14px,env(safe-area-inset-bottom))}
  .tools button{min-height:46px}
}

/* Decorative outgoing screens remain visible until the live screen settles. */
.navigation-snapshot{position:fixed;inset:0;z-index:10;overflow:hidden;pointer-events:none}
.navigation-snapshot .snapshot-home{background:var(--page);color:var(--ink)}
.navigation-snapshot .snapshot-home>header,.navigation-snapshot .snapshot-home main>footer{display:flex}
.navigation-snapshot .snapshot-home .home-screen{display:block!important}
.navigation-snapshot .snapshot-home .game-screen{display:none!important}
@media(min-width:880px){.navigation-snapshot .snapshot-home .home-screen{display:grid!important}}

/* Home never scrolls: compact spacing, then drop decoration, before anything overflows. */
main[data-home-density="compact"] .home-hero{padding:6px 0 16px}
main[data-home-density="compact"] .home-hero h1{font-size:clamp(26px,7.4vw,40px)}
main[data-home-density="compact"] .home-hero p{margin-top:6px;font-size:13px}
main[data-home-density="compact"] .home-tiles{transform:scale(.82);transform-origin:right center}
main[data-home-density="compact"] .resume-panel{padding-top:12px;padding-bottom:12px;margin-bottom:16px}
main[data-home-density="compact"] .section-heading{margin-bottom:10px}
main[data-home-density="compact"] .level-options{gap:6px}
main[data-home-density="compact"] .level-card{padding-top:9px;padding-bottom:9px}
main[data-home-density="compact"] .stats-section{margin-top:16px}
main[data-home-density="compact"] .stats-card{padding-top:12px;padding-bottom:12px}
main[data-home-density="compact"] .clear-total strong{font-size:25px}
main[data-home-density="compact"] .best-times{margin-top:10px;padding-top:10px}
main[data-home-density="compact"] footer{padding-top:8px;padding-bottom:2px}
main[data-home-density="tight"] .home-hero{padding:2px 0 12px}
main[data-home-density="tight"] .home-hero h1{font-size:24px;line-height:1.08}
main[data-home-density="tight"] .home-hero p,main[data-home-density="tight"] .home-tiles{display:none}
main[data-home-density="tight"] .resume-panel{padding:10px 12px 10px 14px;margin:4px 0 24px}
main[data-home-density="tight"] .resume-panel .eyebrow{display:none}
main[data-home-density="tight"] .resume-panel h2{font-size:16px}
main[data-home-density="tight"] .resume-panel .primary{min-height:44px}
main[data-home-density="tight"] .section-heading{margin-bottom:8px}
main[data-home-density="tight"] .section-heading h2{font-size:18px}
main[data-home-density="tight"] .level-options{gap:5px}
main[data-home-density="tight"] .level-card{padding:4px 10px 4px 12px}
main[data-home-density="tight"] .difficulty-bars{padding:6px}
main[data-home-density="tight"] .level-card strong{font-size:17px}
main[data-home-density="tight"] .stats-section{margin-top:24px}
main[data-home-density="tight"] .stats-card{padding:8px 14px}
main[data-home-density="tight"] .clear-total strong{font-size:22px}
main[data-home-density="tight"] .best-times{margin-top:8px;padding-top:8px}
main[data-home-density="tight"] .stats-note{margin-top:8px;font-size:11px}
main[data-home-density="tight"] footer{padding-top:6px;padding-bottom:0}
@media(orientation:landscape) and (max-height:500px){
  .app>header{height:56px}
  .home-screen{display:grid;grid-template-columns:1fr 1fr;column-gap:22px;align-items:start}
  .home-hero{grid-column:1 / -1;padding:4px 0 10px!important}
  .home-hero h1{font-size:24px!important}
  .home-hero h1 br{display:none}
  .home-hero p,.home-tiles{display:none}
  .resume-panel{grid-column:1 / -1;padding:8px 12px!important;margin-bottom:12px!important}
  .stats-section{margin-top:0!important}
  .level-card{padding:7px 10px!important}
  .stats-card{padding:10px 14px!important}
  .clear-total strong{font-size:22px}
}

/* This game uses taps and pans, with no text selection or page zoom gestures. */
*,*::before,*::after{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
html,body{touch-action:pan-x pan-y}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;animation:none!important}}
@media(max-width:600px) and (min-height:780px){
  main[data-home-density="comfortable"] .home-hero{padding-top:4px;padding-bottom:16px}
  main[data-home-density="comfortable"] .home-hero p{font-size:15px;margin-top:10px}
}

.menu-links{display:flex;flex-wrap:wrap;justify-content:center;gap:0 12px;margin-top:8px}
.menu-links a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 8px;color:var(--accent);font-size:14px;font-weight:600;text-underline-offset:3px}