/* DevAI Games — light theme, single stylesheet, no dependencies.
   The games themselves render dark, so the stage that holds them is treated
   as a deliberate dark inset rather than pretending the seam isn't there. */
:root{
  --bg:#ffffff;
  --bg-tint:#f6f7f9;      /* section bands, card backs */
  --bg-sink:#eceef2;      /* pressed / inset */
  --line:#dfe3ea;
  --line-soft:#e9ecf1;
  --ink:#10151d;          /* headings */
  --ink-body:#39424f;     /* body copy — 8.6:1 on white */
  --ink-dim:#68717f;      /* secondary — 4.9:1 on white */
  --brand:#b4560d;        /* 4.8:1 on white, matches the amber in the logo */
  --brand-ink:#8f4409;    /* hover / visited */
  --brand-wash:#fdf5ec;
  --accent:#0f6f5c;       /* teal, for the second signal colour */
  --stage:#11161f;        /* the dark inset the games sit in */
  --max:1120px;
  --r:12px;
  --shadow:0 1px 2px rgba(16,21,29,.05), 0 4px 14px rgba(16,21,29,.06);
  --shadow-lift:0 2px 6px rgba(16,21,29,.07), 0 12px 30px rgba(16,21,29,.10);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--ink-body);
  font:16px/1.65 ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-ink);text-decoration:underline}
img,svg{max-width:100%;display:block}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:8px;top:8px;background:var(--brand);color:#fff;padding:9px 15px;border-radius:8px;z-index:99}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}

/* ---------------------------------------------------------------- header */
header{border-bottom:1px solid var(--line);background:rgba(255,255,255,.94);
  position:sticky;top:0;z-index:20;backdrop-filter:saturate(180%) blur(8px)}
.hd{display:flex;align-items:center;gap:22px;height:64px}
.logo{font-weight:800;font-size:19px;letter-spacing:-.2px;color:var(--ink)}
.logo span{color:var(--brand)}
.logo:hover{text-decoration:none}
nav{margin-left:auto;display:flex;gap:6px;flex-wrap:wrap}
nav a{color:var(--ink-body);font-size:14.5px;font-weight:500;padding:7px 11px;border-radius:8px}
nav a:hover{color:var(--ink);background:var(--bg-tint);text-decoration:none}
nav a[aria-current]{color:var(--brand);background:var(--brand-wash)}

/* ------------------------------------------------------------ breadcrumbs */
.crumbs{font-size:13px;color:var(--ink-dim);padding:20px 0 0}
.crumbs a{color:var(--ink-dim)}
.crumbs a:hover{color:var(--brand)}
.crumbs span{margin:0 7px;opacity:.45}

/* -------------------------------------------------------------------- hero */
.hero{padding:52px 0 36px;border-bottom:1px solid var(--line-soft);
  background:linear-gradient(180deg,var(--brand-wash),var(--bg) 70%)}
.hero h1{font-size:clamp(30px,4.6vw,46px);line-height:1.1;letter-spacing:-1px;color:var(--ink)}
.hero p{color:var(--ink-body);font-size:17.5px;max-width:60ch;margin-top:15px}

h1{font-size:clamp(27px,4vw,38px);line-height:1.18;letter-spacing:-.6px;color:var(--ink)}
h2{font-size:clamp(20px,2.4vw,25px);margin:36px 0 12px;letter-spacing:-.3px;color:var(--ink)}
h3{font-size:17px;margin:24px 0 6px;color:var(--ink);letter-spacing:-.1px}
section p+p{margin-top:13px}
.lede{color:var(--ink-body);font-size:17.5px;max-width:66ch;margin-top:12px}
.prose{max-width:70ch}
.prose p{color:var(--ink-body)}

/* --------------------------------------------------------------- game grid */
.grid{display:grid;gap:18px;margin:22px 0 6px;
  grid-template-columns:repeat(auto-fill,minmax(238px,1fr))}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);
  overflow:hidden;box-shadow:var(--shadow);
  transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease}
.card:hover{transform:translateY(-3px);border-color:#cfd6e0;
  box-shadow:var(--shadow-lift);text-decoration:none}
.card .thumb{aspect-ratio:16/9;background:var(--stage);object-fit:cover;
  width:100%;height:auto;display:block}
.card .body{padding:13px 15px 16px}
.card .body b{display:block;font-size:16.5px;color:var(--ink);letter-spacing:-.2px}
.card .body small{display:block;color:var(--ink-dim);font-size:13.5px;margin-top:5px;line-height:1.5}
.tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:11px}
.tag{font-size:11px;letter-spacing:.5px;text-transform:uppercase;font-weight:600;
  color:var(--ink-dim);background:var(--bg-tint);border:1px solid var(--line-soft);
  border-radius:20px;padding:3px 9px}

/* -------------------------------------------------------------- game stage */
.stage{margin:18px 0 0;border:1px solid var(--line);border-radius:var(--r);
  overflow:hidden;background:var(--stage);position:relative;box-shadow:var(--shadow)}
.stage iframe{display:block;width:100%;height:100%;border:0}
.stage.r16x9{aspect-ratio:16/9}
.stage.r4x3{aspect-ratio:4/3}
.stage.r3x4{aspect-ratio:3/4;max-width:520px;margin-inline:auto}
.stage.r1x1{aspect-ratio:1/1;max-width:620px;margin-inline:auto}
.stagebar{display:flex;align-items:center;gap:13px;flex-wrap:wrap;
  padding:12px 2px 0;color:var(--ink-dim);font-size:13.5px}
.btn{display:inline-block;background:var(--brand);color:#fff;font-weight:650;
  border:0;border-radius:9px;padding:10px 17px;font-size:14.5px;cursor:pointer;
  font-family:inherit;transition:background .14s}
.btn:hover{background:var(--brand-ink);text-decoration:none;color:#fff}
.btn.ghost{background:#fff;color:var(--ink-body);border:1px solid var(--line);font-weight:600}
.btn.ghost:hover{background:var(--bg-tint);color:var(--ink)}
.placeholder{display:flex;align-items:center;justify-content:center;height:100%;
  color:#9aa5b4;text-align:center;padding:24px;font-size:15px}

.cols{display:grid;gap:30px;grid-template-columns:minmax(0,2fr) minmax(0,1fr);margin-top:8px}
@media(max-width:860px){.cols{grid-template-columns:1fr}}
.panel{background:var(--bg-tint);border:1px solid var(--line-soft);
  border-radius:var(--r);padding:17px 19px}
.panel h3{margin:0 0 11px;font-size:13px;letter-spacing:.7px;text-transform:uppercase;
  color:var(--ink-dim);font-weight:700}
table.keys{width:100%;border-collapse:collapse;font-size:14.5px}
table.keys td{padding:7px 0;vertical-align:top;border-bottom:1px solid var(--line-soft)}
table.keys tr:last-child td{border-bottom:0}
table.keys td:first-child{white-space:nowrap;padding-right:15px;color:var(--ink);font-weight:600}
table.keys td:last-child{color:var(--ink-dim)}
ul.tips{list-style:none;font-size:14.5px;color:var(--ink-body)}
ul.tips li{padding-left:19px;position:relative;margin-bottom:10px}
ul.tips li::before{content:"▸";position:absolute;left:0;color:var(--brand)}

/* ------------------------------------------------------------- spec block */
.spec{display:grid;gap:1px;background:var(--line-soft);border:1px solid var(--line-soft);
  border-radius:var(--r);overflow:hidden;margin-top:14px;
  grid-template-columns:repeat(auto-fit,minmax(168px,1fr))}
.spec div{background:#fff;padding:13px 15px}
.spec dt{font-size:11.5px;letter-spacing:.6px;text-transform:uppercase;
  color:var(--ink-dim);font-weight:700;margin-bottom:3px}
.spec dd{font-size:14.5px;color:var(--ink)}

/* --------------------------------------------------------------------- faq */
.faq{margin-top:14px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;padding:15px 0;font-weight:600;list-style:none;color:var(--ink)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--brand);font-weight:700;font-size:18px;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq p{color:var(--ink-body);padding:0 0 15px;max-width:70ch}

.note{background:var(--brand-wash);border:1px solid #f0e0cc;
  border-left:3px solid var(--brand);border-radius:8px;padding:15px 17px;
  color:var(--ink-body);font-size:14.5px;margin:28px 0}

/* ---------------------------------------------------------------- feedback */
.fb{background:var(--bg-tint);border:1px solid var(--line-soft);border-radius:var(--r);
  padding:20px 22px;margin:30px 0}
.fb h2{margin:0 0 6px;font-size:19px}
.fb p.sub{color:var(--ink-dim);font-size:14px;margin-bottom:14px}
.fb textarea,.fb input[type=email]{width:100%;font:inherit;font-size:14.5px;
  color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:9px;
  padding:11px 13px;resize:vertical}
.fb textarea{min-height:92px}
.fb input[type=email]{margin-top:10px}
.fb .row{display:flex;gap:11px;align-items:center;margin-top:12px;flex-wrap:wrap}
.fb .kind{display:flex;gap:7px;flex-wrap:wrap}
.fb .kind label{font-size:13px;color:var(--ink-body);background:#fff;
  border:1px solid var(--line);border-radius:20px;padding:5px 12px;cursor:pointer}
.fb .kind input{position:absolute;opacity:0;pointer-events:none}
.fb .kind input:checked+span{color:var(--brand);font-weight:650}
.fb .kind label:has(input:checked){border-color:var(--brand);background:var(--brand-wash)}
.fb .msg{font-size:14px;margin-top:11px}
.fb .msg.ok{color:var(--accent);font-weight:600}
.fb .msg.err{color:#a3341f}
.fb .hp{position:absolute;left:-9999px}

/* ------------------------------------------------------------------ footer */
footer{border-top:1px solid var(--line);margin-top:60px;padding:30px 0 46px;
  color:var(--ink-dim);font-size:14px;background:var(--bg-tint)}
.fgrid{display:flex;gap:30px;flex-wrap:wrap;justify-content:space-between}
footer a{color:var(--ink-dim)}
footer a:hover{color:var(--brand)}
.fnav{display:flex;gap:8px;flex-wrap:wrap}
.fnav a{padding:2px 0;margin-right:8px}
.copy{margin-top:20px;font-size:13px;color:#8b94a2}

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

/* ------------------------------------------------------- progress strip */
.ghstrip{margin:12px 0 0;padding:10px 14px;font-size:14px;color:var(--ink-body);
  background:var(--brand-wash);border:1px solid #f0e0cc;border-radius:9px}
.ghstrip b{color:var(--ink);font-weight:700}
#ghAccount .spec{margin-top:18px}
#ghAccount .spec dd{font-size:22px;font-weight:700;letter-spacing:-.4px}
#ghAccount table.keys thead td{color:var(--ink-dim);font-size:12px;
  letter-spacing:.5px;text-transform:uppercase;border-bottom:1px solid var(--line)}
#ghAccount table.keys td:last-child,#ghAccount table.keys td:nth-child(2),
#ghAccount table.keys td:nth-child(3){color:var(--ink-body)}
#ghAccount [data-code]{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}

/* ------------------------------------------------- DevAI family + products */
.fdevai{margin-top:22px;padding-top:18px;border-top:1px solid var(--line);
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-size:14px}
.fdevai b{color:var(--ink);font-weight:700}
.fdevai a{color:var(--ink-body)}
.fdevai a:hover{color:var(--brand)}
.product{border:1px solid var(--line);border-radius:var(--r);padding:22px 24px;
  margin:22px 0;background:#fff;box-shadow:var(--shadow)}
.product h2{margin:0 0 4px}
.product .ptag{color:var(--brand);font-weight:600;font-size:15.5px}
.product .spec{margin:14px 0 4px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.product .prose{max-width:74ch;margin-top:14px}
.product .pshot{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;
  border-radius:9px;border:1px solid var(--line-soft);margin-bottom:16px;
  background:var(--bg-tint)}
/* The tool is a light-UI editor, not a dark game: the stage that holds it is
   light, and taller, because an editor needs vertical room. */
.stage.tool{background:#f7f6fd}
.stage.tool.r16x9{aspect-ratio:16/10;min-height:620px}
@media(max-width:700px){.stage.tool.r16x9{aspect-ratio:3/4;min-height:520px}}