@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,500;0,9..144,600;0,9..144,700&display=swap');
/* ============================================================
   Mindpop — Brain games & puzzles. PREMIUM DARK-FIRST theme.
   Signature accent: orange #f97316 -> teal #14b8a6.
   Dark is the DEFAULT; light is opt-in (data-theme=light), saved.
   Inter font. 100% in the browser — no server, no AI, no cost.
   ALL game class names + tile palettes preserved so each game's
   logic (the per-game .js files) keeps working unchanged.
   Only the surrounding chrome / cards / chrome is restyled.
   ============================================================ */
:root{
  /* dark (DEFAULT) */
  --bg:#0c0f12; --bg2:#11161b; --card:#141a20; --card-2:#18202741; --panel:#10161b;
  --ink:#f2f6fa; --muted:#a7b4c0; --faint:#74828f;
  --line:#222c35; --line-2:#2d3a45; --field:#0f151a;
  --acc:#fb923c;        /* orange (vivid for dark) */
  --acc2:#2dd4bf;       /* teal */
  --acc-soft:rgba(251,146,60,.15); --acc2-soft:rgba(45,212,191,.15);
  --warn:#fbbf24; --bad:#f87171; --good:#34d399;
  --grad:linear-gradient(135deg,#f97316,#14b8a6);
  --grad-soft:linear-gradient(135deg,rgba(249,115,22,.22),rgba(20,184,166,.22));
  --glow:0 8px 28px rgba(249,115,22,.34);
  --glow2:0 8px 28px rgba(20,184,166,.30);
  --shadow:0 10px 30px rgba(0,0,0,.46);
  --shadow-lg:0 26px 64px rgba(0,0,0,.58);
  --radius:18px;
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
}
html[data-theme=light]{
  --bg:#fbf7f3; --bg2:#ffffff; --card:#ffffff; --card-2:#ffffff; --panel:#fdf4ec;
  --ink:#1c1410; --muted:#6b5d52; --faint:#9b8c7e;
  --line:#f0e6dc; --line-2:#e7dace; --field:#fbf4ec;
  --acc:#ea580c; --acc2:#0d9488;
  --acc-soft:#fff1e6; --acc2-soft:#e3f5f2;
  --warn:#d97706; --bad:#ef4444; --good:#059669;
  --grad:linear-gradient(135deg,#f97316,#0d9488);
  --grad-soft:linear-gradient(135deg,rgba(249,115,22,.10),rgba(13,148,136,.12));
  --glow:0 6px 20px rgba(249,115,22,.22);
  --glow2:0 6px 20px rgba(13,148,136,.20);
  --shadow:0 6px 20px rgba(28,20,16,.06);
  --shadow-lg:0 20px 50px rgba(28,20,16,.12);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased;
  background:
    radial-gradient(1100px 600px at 12% -10%,var(--acc-soft),transparent 60%),
    radial-gradient(1000px 600px at 96% 2%,var(--acc2-soft),transparent 55%),
    radial-gradient(900px 600px at 50% 120%,var(--acc-soft),transparent 62%),
    var(--bg);
  background-attachment:fixed;
  min-height:100vh;transition:background .25s,color .25s;
}
a{color:inherit;text-decoration:none}
button,input,select{font-family:inherit}
.wrap{max-width:980px;margin:0 auto;padding:0 16px}
h1,h2,h3{letter-spacing:-.3px}

/* icons */
i[data-i]{display:inline-flex;align-items:center;justify-content:center;line-height:0}
i[data-i] svg{width:1em;height:1em;display:block}

/* ---------- header ---------- */
.top{position:sticky;top:0;z-index:30;background:color-mix(in srgb,var(--bg2) 80%,transparent);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:12px;height:64px}
.logo{display:flex;align-items:center;gap:11px;margin-right:auto;font-size:20px;font-weight:800;letter-spacing:-.4px}
.logo .lm{width:36px;height:36px;border-radius:12px;background:var(--grad);display:grid;place-items:center;color:#fff;font-size:18px;box-shadow:var(--glow)}
.logo .lm i[data-i]{color:#fff}
.logo .lm svg{width:21px;height:21px}
.logo span.tx{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.nav{display:flex;gap:2px;overflow-x:auto;scrollbar-width:none}
.nav::-webkit-scrollbar{display:none}
.nav a{font-size:13.5px;font-weight:600;color:var(--muted);padding:8px 13px;border-radius:10px;white-space:nowrap;transition:.15s}
.nav a:hover,.nav a.on{background:var(--acc-soft);color:var(--acc)}
.theme{width:40px;height:40px;border-radius:12px;border:1px solid var(--line-2);background:var(--field);cursor:pointer;font-size:18px;flex:none;color:var(--ink);display:grid;place-items:center;transition:.15s}
.theme:hover{color:var(--acc);border-color:var(--acc)}
.theme:active{transform:scale(.95)}
.theme svg{width:20px;height:20px}

/* ---------- hero ---------- */
.hero{text-align:center;padding:56px 0 16px}
.hero .pill{display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:700;color:var(--acc);background:var(--acc-soft);border:1px solid transparent;padding:7px 15px;border-radius:999px;margin-bottom:22px;letter-spacing:.02em}
.hero .pill i{font-size:14px}
.hero h1{font-size:clamp(32px,6.4vw,52px);line-height:1.1;letter-spacing:-1.2px;font-weight:800}
.hero h1 b{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;font-weight:inherit}
.hero p{color:var(--muted);max-width:600px;margin:18px auto 0;font-size:16.5px}
.hero .cta{display:flex;gap:11px;justify-content:center;margin-top:28px;flex-wrap:wrap}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:13px;font-size:14.5px;font-weight:700;cursor:pointer;border:1px solid var(--line-2);background:var(--card);color:var(--ink);transition:.15s}
.btn svg,.btn i{font-size:17px}
.btn:hover{border-color:var(--acc);color:var(--acc);box-shadow:var(--shadow)}
.btn:active{transform:scale(.98)}
.btn.grad{background:var(--grad);color:#fff;border:none;box-shadow:var(--glow)}
.btn.grad:hover{color:#fff;filter:brightness(1.06)}

/* ---------- hub: premium game-picker grid ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:16px;margin:10px 0 6px}
.cab{position:relative;display:block;background:var(--card);border:1px solid var(--line-2);border-radius:20px;padding:24px 20px 22px;overflow:hidden;transition:transform .2s,box-shadow .2s,border-color .2s;
  /* per-tile accent (overridden below) */
  --ta:var(--acc); --tb:var(--acc2);}
.cab::before{content:'';position:absolute;inset:0 0 auto 0;height:4px;background:linear-gradient(90deg,var(--ta),var(--tb))}
.cab::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,
  color-mix(in srgb,var(--ta) 9%,transparent),transparent 60%);opacity:0;transition:opacity .2s;pointer-events:none}
.cab:hover{transform:translateY(-5px);border-color:var(--ta);box-shadow:var(--shadow-lg)}
.cab:hover::after{opacity:1}
.cab .ci{position:relative;z-index:1;width:58px;height:58px;border-radius:16px;
  background:color-mix(in srgb,var(--ta) 16%,transparent);color:var(--ta);
  display:grid;place-items:center;font-size:27px;margin-bottom:16px;transition:.22s}
.cab .ci svg{width:28px;height:28px}
.cab:hover .ci{background:linear-gradient(135deg,var(--ta),var(--tb));color:#fff;box-shadow:0 8px 22px color-mix(in srgb,var(--ta) 40%,transparent)}
.cab h3{position:relative;z-index:1;font-size:17.5px;font-weight:800;line-height:1.3;margin-bottom:7px;letter-spacing:-.3px}
.cab p{position:relative;z-index:1;font-size:13.5px;color:var(--faint)}
.cab .tagx{position:absolute;top:16px;right:14px;z-index:2;font-size:10px;font-weight:800;letter-spacing:.06em;color:var(--ta);background:color-mix(in srgb,var(--ta) 15%,transparent);padding:5px 9px;border-radius:8px;text-transform:uppercase}

/* distinct accent per game tile */
.cab.g-2048 {--ta:#f97316;--tb:#fb923c}
.cab.g-memory{--ta:#14b8a6;--tb:#2dd4bf}
.cab.g-ttt  {--ta:#3b82f6;--tb:#60a5fa}
.cab.g-slide{--ta:#a855f7;--tb:#c084fc}
.cab.g-simon{--ta:#ef4444;--tb:#fb7185}
.cab.g-math {--ta:#eab308;--tb:#facc15}

/* ---------- game page title ---------- */
.ptitle{padding:32px 0 4px;text-align:center}
.ptitle h1{font-size:clamp(26px,5.2vw,36px);line-height:1.18;font-weight:800;letter-spacing:-.6px}
.ptitle h1 b{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;font-weight:inherit}
.ptitle p{color:var(--muted);margin:12px auto 0;font-size:15px;max-width:620px}
.crumb{font-size:12.5px;color:var(--faint);margin-bottom:14px;display:flex;align-items:center;gap:6px;justify-content:center}
.crumb a{display:inline-flex;align-items:center;gap:5px;font-weight:700;color:var(--muted)}
.crumb a:hover{color:var(--acc)}

/* ---------- score bar ---------- */
.scorebar{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin:20px auto 14px;max-width:540px}
.score{background:var(--card);border:1px solid var(--line-2);border-radius:14px;padding:11px 16px;min-width:92px;text-align:center;flex:1;box-shadow:var(--shadow)}
.score .k{font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--faint);font-weight:800}
.score .v{font-size:23px;font-weight:800;margin-top:4px;color:var(--acc);letter-spacing:-.5px}
.score.alt .v{color:var(--acc2)}
.score.warn .v{color:var(--warn)}

/* ---------- game stage ---------- */
.stage{display:flex;flex-direction:column;align-items:center;margin:6px auto 0;max-width:560px}

/* generic DOM board (square grid games) */
.board{position:relative;width:100%;max-width:448px;aspect-ratio:1/1;background:var(--panel);border:1px solid var(--line-2);border-radius:22px;padding:11px;box-shadow:var(--shadow);touch-action:none;user-select:none;-webkit-user-select:none;-webkit-tap-highlight-color:transparent}

/* tile grid helper (2048 / slide) */
.tilegrid{position:relative;width:100%;height:100%;display:grid;gap:8px}
.tile{display:grid;place-items:center;border-radius:13px;font-weight:800;background:var(--field);color:var(--ink);transition:transform .12s ease,background .12s,color .12s;font-size:clamp(18px,7vw,34px)}

/* 2048 tile palette (warm orange ramp, teal as the high reward) — PRESERVED */
.tile.t0{background:var(--field);color:transparent}
.tile.t2{background:#fdeedf;color:#7a5a3c}
.tile.t4{background:#fbe0c6;color:#7a5230}
.tile.t8{background:#fcc89a;color:#5e3a16}
.tile.t16{background:#fbb274;color:#fff}
.tile.t32{background:#fb923c;color:#fff}
.tile.t64{background:#f97316;color:#fff}
.tile.t128{background:#ea580c;color:#fff;font-size:clamp(16px,6.2vw,30px)}
.tile.t256{background:#c2410c;color:#fff;font-size:clamp(16px,6.2vw,30px)}
.tile.t512{background:#14b8a6;color:#fff;font-size:clamp(16px,6.2vw,30px)}
.tile.t1024{background:#0d9488;color:#fff;font-size:clamp(13px,5vw,26px)}
.tile.t2048{background:#0f766e;color:#fff;font-size:clamp(13px,5vw,26px);box-shadow:0 0 0 3px rgba(20,184,166,.45)}
.tile.tbig{background:#1c1410;color:#fff;font-size:clamp(13px,5vw,26px)}
.tile.t2{color:#7a5a3c}
html[data-theme=light] .tile.t2{background:#fdeedf;color:#7a5a3c}
html[data-theme=light] .tile.t4{background:#fbe0c6;color:#7a5230}
/* dark default keeps low tiles readable on dark board */
.tile.t2{background:#3a2c1f;color:#e6d2bf}
.tile.t4{background:#4a3522;color:#f0ddc8}
.tile.t8{background:#7a4a1e;color:#fff}
.tile.pop{animation:pop .16s ease}
@keyframes pop{0%{transform:scale(.6)}100%{transform:scale(1)}}

/* slide puzzle tiles clickable */
.slidetile{cursor:pointer;background:linear-gradient(135deg,color-mix(in srgb,var(--acc) 26%,var(--field)),var(--field));color:var(--ink)}
.slidetile.gap{background:transparent;cursor:default;box-shadow:none}
.slidetile:not(.gap):hover{background:var(--acc-soft);color:var(--acc)}

/* memory grid */
.memgrid{display:grid;gap:10px;width:100%;height:100%}
.mcard{position:relative;border-radius:14px;cursor:pointer;-webkit-tap-highlight-color:transparent;perspective:600px;aspect-ratio:1/1}
.mcard .mface{position:absolute;inset:0;border-radius:14px;display:grid;place-items:center;backface-visibility:hidden;transition:transform .35s;font-size:clamp(20px,8vw,40px)}
.mcard .mback{background:var(--grad);color:#fff;transform:rotateY(0deg)}
.mcard .mfront{background:var(--field);border:1px solid var(--line-2);color:var(--acc);transform:rotateY(180deg)}
.mcard.flip .mback{transform:rotateY(180deg)}
.mcard.flip .mfront{transform:rotateY(360deg)}
.mcard.matched .mfront{background:var(--acc2-soft);color:var(--acc2);border-color:var(--acc2)}
.mcard.matched{cursor:default}
.mcard .mback i,.mcard .mfront i{font-size:1em}
.mcard .mback svg{width:42%;height:42%}

/* tic-tac-toe grid */
.tttgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;width:100%;height:100%}
.ttt{display:grid;place-items:center;background:var(--field);border:1px solid var(--line-2);border-radius:15px;cursor:pointer;font-size:clamp(34px,13vw,64px);font-weight:800;-webkit-tap-highlight-color:transparent;transition:background .12s}
.ttt:hover{background:var(--acc-soft)}
.ttt.x{color:var(--acc)}
.ttt.o{color:var(--acc2)}
.ttt.win{background:var(--acc-soft);box-shadow:inset 0 0 0 2px var(--acc)}
.ttt.taken{cursor:default}

/* overlay (win / game over modal) */
.overlay{position:absolute;inset:0;display:none;flex-direction:column;align-items:center;justify-content:center;gap:15px;
  background:color-mix(in srgb,var(--bg2) 86%,transparent);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  text-align:center;padding:24px;z-index:5;border-radius:22px}
.overlay.show{display:flex;animation:ovin .25s ease}
@keyframes ovin{from{opacity:0;transform:scale(.97)}to{opacity:1;transform:scale(1)}}
.overlay h2{font-size:26px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.overlay h2.lose{background:none;-webkit-text-fill-color:initial;color:var(--bad)}
.overlay p{color:var(--muted);font-size:14.5px;max-width:320px}

/* ---------- controls ---------- */
.ctrls{display:flex;gap:9px;flex-wrap:wrap;justify-content:center;margin:18px 0 4px}
.ctrls button{display:inline-flex;align-items:center;gap:7px;background:var(--card);border:1px solid var(--line-2);padding:11px 18px;border-radius:13px;font-size:14px;font-weight:700;color:var(--ink);cursor:pointer;transition:.15s}
.ctrls button i{font-size:16px}
.ctrls button:hover{border-color:var(--acc);color:var(--acc)}
.ctrls button:active{transform:scale(.98)}
.ctrls .primary{background:var(--grad);color:#fff;border:none;box-shadow:var(--glow)}
.ctrls .primary:hover{color:#fff;filter:brightness(1.06)}

/* difficulty / mode segment */
.seg{display:flex;gap:8px;justify-content:center;margin:8px auto 2px;flex-wrap:wrap}
.seg button{padding:9px 16px;border:1px solid var(--line-2);background:var(--field);border-radius:11px;font-size:13px;font-weight:700;color:var(--muted);cursor:pointer;transition:.15s}
.seg button:hover{border-color:var(--acc)}
.seg button.on{background:var(--acc-soft);border-color:var(--acc);color:var(--acc)}

/* simon pads (2x2) — PRESERVED colours */
.simongrid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;width:100%;height:100%}
.pad{border-radius:18px;cursor:pointer;-webkit-tap-highlight-color:transparent;border:none;opacity:.55;transition:opacity .12s,transform .08s,filter .12s;box-shadow:inset 0 -4px 0 rgba(0,0,0,.18)}
.pad:active{transform:scale(.98)}
.pad.lit{opacity:1;filter:brightness(1.18) saturate(1.1);box-shadow:0 0 28px 3px currentColor,inset 0 -4px 0 rgba(0,0,0,.18)}
.pad.green{background:#10b981;color:#10b981}
.pad.red{background:#ef4444;color:#ef4444}
.pad.yellow{background:#f59e0b;color:#f59e0b}
.pad.blue{background:#3b82f6;color:#3b82f6}
.board.locked .pad{cursor:default}

/* math sprint */
.mathprob{font-size:clamp(34px,11vw,60px);font-weight:800;letter-spacing:-1px;color:var(--ink);text-align:center;margin:auto;padding:20px}
.board.math{aspect-ratio:auto;min-height:170px;display:flex;align-items:center;justify-content:center}
.mathans{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;width:100%;max-width:448px;margin-top:14px}
.ansbtn{padding:20px 10px;border-radius:16px;border:1px solid var(--line-2);background:var(--card);color:var(--ink);font-size:clamp(20px,6vw,28px);font-weight:800;cursor:pointer;-webkit-tap-highlight-color:transparent;transition:.12s;box-shadow:var(--shadow)}
.ansbtn:hover{border-color:var(--acc);color:var(--acc)}
.ansbtn.good{background:var(--good);color:#fff;border-color:var(--good)}
.ansbtn.bad{background:var(--bad);color:#fff;border-color:var(--bad)}
.ansbtn:disabled{cursor:default}

/* ---------- ad slot ---------- */
.ad{margin:24px auto;max-width:560px;min-height:90px;border:1px dashed var(--line-2);border-radius:14px;display:grid;place-items:center;color:var(--faint);font-size:11px;letter-spacing:.14em;text-transform:uppercase;background:var(--field)}

/* ---------- SEO content ---------- */
.content{background:var(--card);border:1px solid var(--line-2);border-radius:var(--radius);padding:28px 26px;margin:18px auto;box-shadow:var(--shadow);max-width:780px}
.content h2{font-size:20px;font-weight:800;margin:20px 0 8px;letter-spacing:-.3px}
.content h2:first-child{margin-top:0}
.content p,.content li{color:var(--muted);font-size:15px;margin-bottom:8px}
.content ul{padding-left:20px}
.content a{color:var(--acc);font-weight:700}
.faq{border-top:1px solid var(--line);padding:16px 0}
.faq:last-child{border-bottom:1px solid var(--line)}
.faq h3{font-size:15.5px;font-weight:700;margin-bottom:5px;color:var(--ink)}
.faq p{font-size:14.5px;color:var(--muted)}

/* ---------- footer ---------- */
.foot{border-top:1px solid var(--line);margin-top:40px;padding:32px 0;text-align:center;color:var(--faint);font-size:13px;background:var(--bg2)}
.foot a{color:var(--muted);margin:0 8px}.foot a:hover{color:var(--acc)}
.foot .fl{margin-bottom:12px;display:flex;flex-wrap:wrap;justify-content:center;gap:2px}
.foot .brand{display:inline-flex;align-items:center;gap:9px;font-size:16px;font-weight:800;color:var(--ink);margin-bottom:14px}
.foot .brand .lm{width:28px;height:28px;border-radius:9px;background:var(--grad);display:grid;place-items:center;color:#fff;font-size:14px}
.foot .brand .lm svg{width:16px;height:16px}

/* ---------- toast ---------- */
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(20px);background:var(--ink);color:var(--bg);padding:12px 20px;border-radius:999px;font-size:13.5px;font-weight:700;opacity:0;pointer-events:none;transition:.25s;z-index:80}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

.muted{color:var(--muted)} .small{font-size:12.5px}
.hint{font-size:13px;color:var(--faint);margin-top:12px;text-align:center;max-width:480px}

/* fullscreen game stage */
.stage:fullscreen,.stage:-webkit-full-screen{background:var(--bg);width:100vw;height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:14px;overflow:auto}
.stage:fullscreen .hint,.stage:-webkit-full-screen .hint{display:none}
#fsBtn{margin-left:8px}

/* 2048 on-screen direction pad */
.dpad{display:flex;gap:10px;justify-content:center;margin:14px 0 0}
.db{width:58px;height:52px;border:1px solid var(--line-2);background:var(--card);border-radius:14px;font-size:22px;font-weight:800;color:var(--acc);cursor:pointer;transition:.12s;display:grid;place-items:center}
.db:hover{border-color:var(--acc)} .db:active{background:var(--acc-soft);transform:scale(.96)}


/* ===== LUXE THEME OVERRIDE — matches appsbyv homepage (warm charcoal + gold + Fraunces) ===== */
:root{
  --bg:#0c0a07;--bg-2:#100d09;--bg2:#100d09;--card:#16120c;--card-2:#1c1610;--card2:#1c1610;--card-solid:#16120c;--panel:#13100a;
  --ink:#f6efe1;--muted:#c6b89c;--ink-2:#c6b89c;--ink-soft:#c6b89c;--faint:#8a7c62;
  --line:#2a2317;--line-2:#36301f;--line2:#36301f;--field:#120f09;
  --gold:#e3bd6e;--gold-2:#f3da9a;--gold-deep:#b88f3e;--grad-gold:linear-gradient(110deg,#f3da9a,#e3bd6e 50%,#c69a45);
}
h1,h2,h3,.logo,.hero h1,.ptitle h1,.sectit h2{font-family:"Fraunces",Georgia,serif !important;letter-spacing:-.01em}
.logo .tx,.logo span.tx{background:var(--grad-gold)!important;-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.logo .lm{background:var(--grad-gold)!important;color:#2a1f07!important}
.hero h1 b,.hero h1 .g{background:var(--grad-gold)!important;-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}

/* GBOXFIX-v1 */
.logo .tx,.logo span.tx,.foot .brand .tx{background:none!important;background-image:none!important;-webkit-background-clip:border-box!important;background-clip:border-box!important;color:var(--gold,#e3bd6e)!important;-webkit-text-fill-color:var(--gold,#e3bd6e)!important}
.hero h1 b,.hero h1 .g,.hero h1 .grad,.ptitle h1 b,.brand .nm em{background:none!important;background-image:none!important;-webkit-background-clip:border-box!important;background-clip:border-box!important;color:var(--gold,#e3bd6e)!important;-webkit-text-fill-color:var(--gold,#e3bd6e)!important}