/* =====================================================================
   snakegamegoogle.com — shared styles
   Design system: Nokia/Game Boy LCD arcade. Self-contained, no external
   fonts or CDNs (fast Core Web Vitals, zero third-party render blocking).
   ===================================================================== */

:root{
  /* palette — muted Game Boy pea-green, not neon acid-green */
  --bg:#10160c;
  --bg-panel:#18210f;
  --bg-elev:#1f2a14;
  --lcd:#9bbc0f;          /* light LCD green */
  --lcd-dim:#6b8215;      /* dimmed green */
  --lcd-dark:#2f5f2e;     /* deep green */
  --screen:#0d1408;       /* game screen interior */
  --amber:#ffb020;        /* arcade score amber */
  --amber-dim:#c47f0a;
  --text:#e2ebd2;
  --muted:#93a37c;
  --line:rgba(155,188,15,.16);
  --line-strong:rgba(155,188,15,.34);

  --display:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Courier New",monospace;
  --body:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;

  --wrap:1080px;
  --radius:6px;
  --radius-lg:14px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:
    radial-gradient(1200px 600px at 50% -10%,rgba(155,188,15,.06),transparent 60%),
    var(--bg);
  color:var(--text);
  font-family:var(--body);
  font-size:17px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--lcd);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
:focus-visible{outline:2px solid var(--amber);outline-offset:3px;border-radius:3px}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.narrow{max-width:760px}

/* ---- LCD readout type treatment ---- */
.eyebrow{
  font-family:var(--display);
  text-transform:uppercase;
  letter-spacing:.28em;
  font-size:.72rem;
  color:var(--lcd-dim);
  margin:0 0 .6rem;
}
h1,h2,h3,h4{font-family:var(--display);line-height:1.15;font-weight:700;color:var(--text)}
h1{font-size:clamp(1.9rem,4.6vw,3.1rem);letter-spacing:-.01em;margin:.2em 0 .4em}
h2{font-size:clamp(1.4rem,3vw,2rem);margin:2.4em 0 .6em;letter-spacing:-.01em}
h3{font-size:1.18rem;margin:1.8em 0 .4em}
p{margin:0 0 1.15em}
.lead{font-size:1.14rem;color:var(--text)}
strong{color:#fff}
mark{background:rgba(255,176,32,.2);color:var(--amber);padding:0 .2em;border-radius:3px}

/* ---- header ---- */
.site-head{
  position:sticky;top:0;z-index:50;
  background:rgba(16,22,12,.82);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.site-head .wrap{display:flex;align-items:center;gap:22px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--display);font-weight:700;
  letter-spacing:.02em;color:var(--text);font-size:1.02rem}
.brand:hover{text-decoration:none}
.brand .dot{width:12px;height:12px;background:var(--lcd);border-radius:2px;
  box-shadow:0 0 0 3px rgba(155,188,15,.18)}
.nav{margin-left:auto;display:flex;gap:6px;flex-wrap:wrap}
.nav a{
  font-family:var(--display);font-size:.82rem;text-transform:uppercase;letter-spacing:.08em;
  color:var(--muted);padding:8px 12px;border-radius:var(--radius);
}
.nav a:hover,.nav a[aria-current="page"]{color:var(--text);background:var(--bg-elev);text-decoration:none}
.menu-btn{display:none}

/* ---- hero ---- */
.hero{padding:46px 0 20px}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center}
.hero p{color:var(--muted);max-width:46ch}

/* ---- the LCD game console ---- */
.console{
  background:linear-gradient(160deg,#2b3a1c,#1a2410);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-lg);
  padding:16px 16px 18px;
  box-shadow:0 24px 60px -30px #000, inset 0 1px 0 rgba(255,255,255,.05);
}
.console-top{display:flex;justify-content:space-between;align-items:center;
  font-family:var(--display);font-size:.72rem;text-transform:uppercase;letter-spacing:.18em;
  color:var(--lcd-dim);margin-bottom:10px;padding:0 4px}
.readout{color:var(--amber);text-shadow:0 0 12px rgba(255,176,32,.4)}
.screen-frame{
  position:relative;background:var(--screen);border-radius:8px;overflow:hidden;
  border:2px solid #05080300;box-shadow:inset 0 0 0 2px rgba(0,0,0,.6),inset 0 0 40px rgba(0,0,0,.55);
}
.screen-frame::after{ /* scanlines */
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(0deg,rgba(0,0,0,.14) 0 1px,transparent 1px 3px);
  mix-blend-mode:multiply;
}
canvas.snake-canvas{display:block;width:100%;height:auto;image-rendering:pixelated;touch-action:none}
.screen-overlay{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;background:rgba(8,12,6,.72);text-align:center;padding:20px;z-index:3;
}
.screen-overlay.hide{display:none}
.screen-overlay h2{margin:0;color:var(--lcd);font-size:1.3rem}
.screen-overlay p{margin:0;color:var(--muted);font-size:.9rem}

/* ---- buttons ---- */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--display);text-transform:uppercase;letter-spacing:.1em;font-size:.86rem;font-weight:700;
  background:var(--lcd);color:#10160c;border:none;border-radius:var(--radius);
  padding:13px 22px;cursor:pointer;transition:transform .08s ease,filter .15s ease;
}
.btn:hover{filter:brightness(1.08);text-decoration:none;color:#10160c}
.btn:active{transform:translateY(1px)}
.btn.amber{background:var(--amber)}
.btn.ghost{background:transparent;color:var(--lcd);box-shadow:inset 0 0 0 1px var(--line-strong)}
.btn.ghost:hover{color:var(--text);background:var(--bg-elev)}
.btn-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:8px}

/* ---- mobile d-pad ---- */
.dpad{display:none;grid-template-columns:repeat(3,58px);grid-template-rows:repeat(3,58px);
  gap:8px;justify-content:center;margin:16px auto 0}
.dpad button{background:var(--bg-elev);color:var(--lcd);border:1px solid var(--line-strong);
  border-radius:var(--radius);font-size:1.3rem;cursor:pointer}
.dpad button:active{background:var(--lcd);color:#10160c}
.dpad .up{grid-area:1/2}.dpad .left{grid-area:2/1}.dpad .down{grid-area:3/2}.dpad .right{grid-area:2/3}

/* ---- generic sections/cards ---- */
section{padding:14px 0}
.section-pad{padding:40px 0}
.grid{display:grid;gap:20px}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.card{
  background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:22px;transition:border-color .15s ease,transform .15s ease;
}
.card:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.card h3{margin:.2em 0 .4em;font-size:1.05rem}
.card p{color:var(--muted);font-size:.94rem;margin:0 0 .8em}
.card .tag{font-family:var(--display);font-size:.68rem;text-transform:uppercase;letter-spacing:.16em;
  color:var(--amber-dim)}
.card a.more{font-family:var(--display);font-size:.78rem;text-transform:uppercase;letter-spacing:.08em}

/* ---- feature list ---- */
.feature{display:flex;gap:14px;align-items:flex-start}
.feature .ico{flex:0 0 auto;width:34px;height:34px;border-radius:8px;background:var(--bg-elev);
  display:grid;place-items:center;color:var(--lcd);border:1px solid var(--line)}
.feature h3{margin:.1em 0 .2em;font-size:1rem}
.feature p{margin:0;color:var(--muted);font-size:.92rem}

/* ---- prose (blog/legal) ---- */
.prose{max-width:720px}
.prose h2{border-top:1px solid var(--line);padding-top:1.6em}
.prose ul,.prose ol{margin:0 0 1.15em;padding-left:1.3em}
.prose li{margin:.3em 0}
.prose blockquote{margin:1.4em 0;padding:.4em 0 .4em 1.1em;border-left:3px solid var(--lcd-dark);
  color:var(--muted);font-style:italic}
.prose table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:.94rem}
.prose th,.prose td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}
.prose th{font-family:var(--display);font-size:.76rem;text-transform:uppercase;letter-spacing:.08em;color:var(--lcd-dim)}
.post-meta{font-family:var(--display);font-size:.76rem;text-transform:uppercase;letter-spacing:.1em;
  color:var(--muted);margin-bottom:1.4em;display:flex;gap:14px;flex-wrap:wrap}

/* ---- breadcrumbs ---- */
.crumbs{font-family:var(--display);font-size:.74rem;text-transform:uppercase;letter-spacing:.09em;
  color:var(--muted);padding:18px 0 0}
.crumbs a{color:var(--lcd-dim)}
.crumbs span{color:var(--muted);margin:0 6px}

/* ---- FAQ ---- */
.faq details{border:1px solid var(--line);border-radius:var(--radius);margin:0 0 10px;
  background:var(--bg-panel);overflow:hidden}
.faq summary{cursor:pointer;padding:16px 18px;font-family:var(--display);font-size:.96rem;
  color:var(--text);list-style:none;display:flex;justify-content:space-between;gap:12px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--lcd);font-size:1.2rem}
.faq details[open] summary::after{content:"–"}
.faq details[open] summary{border-bottom:1px solid var(--line)}
.faq .ans{padding:14px 18px;color:var(--muted);font-size:.96rem}
.faq .ans p:last-child{margin:0}

/* ---- ad slots ---- */
.ad-slot{margin:26px auto;text-align:center;min-height:90px;display:flex;align-items:center;
  justify-content:center;color:var(--muted);font-family:var(--display);font-size:.68rem;
  letter-spacing:.18em;text-transform:uppercase;border:1px dashed var(--line);border-radius:var(--radius);
  padding:10px}

/* ---- CTA band ---- */
.band{background:linear-gradient(160deg,#22301a,#141d0e);border:1px solid var(--line-strong);
  border-radius:var(--radius-lg);padding:34px;text-align:center;margin:44px 0}
.band h2{margin:0 0 .3em}
.band p{color:var(--muted);margin:0 auto 1.2em;max-width:52ch}

/* ---- footer ---- */
.site-foot{border-top:1px solid var(--line);margin-top:60px;padding:40px 0 30px;color:var(--muted)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px}
.foot-grid h4{font-size:.8rem;text-transform:uppercase;letter-spacing:.14em;color:var(--lcd-dim);margin:0 0 .8em}
.foot-grid a{display:block;color:var(--muted);font-size:.92rem;padding:3px 0}
.foot-grid a:hover{color:var(--text)}
.foot-bottom{margin-top:26px;padding-top:18px;border-top:1px solid var(--line);
  font-size:.82rem;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}

/* ---- responsive ---- */
@media (max-width:860px){
  .hero-grid{grid-template-columns:1fr;gap:26px}
  .grid.cols-3{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;
    background:var(--bg-panel);border-bottom:1px solid var(--line-strong);padding:10px 20px}
  .nav.open{display:flex}
  .menu-btn{display:inline-flex;margin-left:auto;background:var(--bg-elev);color:var(--lcd);
    border:1px solid var(--line-strong);border-radius:var(--radius);padding:8px 12px;
    font-family:var(--display);cursor:pointer}
  .dpad{display:grid}
}
@media (max-width:560px){
  body{font-size:16px}
  .grid.cols-2,.grid.cols-3{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .band{padding:24px}
}
@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important;transition:none!important;animation:none!important}
}

/* =====================================================================
   Google-style snake — homepage only. All classes prefixed .gs- so no
   other page is affected. Bright card that pops against the dark hero.
   ===================================================================== */
.gs-card{
  width:100%;max-width:820px;margin-inline:auto;border-radius:18px;overflow:hidden;
  background:#578a34;box-shadow:0 18px 44px rgba(0,0,0,.4);
  font-family:var(--body);
}
.gs-hud{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 16px;background:#4a7a2e;color:#fff;font-weight:700;
}
.gs-hud .gs-stat{display:flex;align-items:center;gap:8px;font-size:1.05rem;letter-spacing:.02em}
.gs-hud .gs-apple{width:16px;height:16px;border-radius:50%;background:#ea4b3b;position:relative;display:inline-block}
.gs-hud .gs-apple::after{content:"";position:absolute;top:-3px;left:7px;width:6px;height:4px;background:#3aa652;border-radius:60% 0;transform:rotate(-30deg)}
.gs-hud .gs-best{opacity:.92;font-size:.95rem;font-weight:700}
.gs-board{position:relative;line-height:0}
.gs-canvas{display:block;width:100%;height:auto;touch-action:none}

.gs-overlay{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:rgba(30,52,18,.42);padding:16px;
}
.gs-overlay.gs-hide{display:none}
.gs-menu{
  width:min(92%,320px);background:#fff;border-radius:16px;padding:20px 18px;
  box-shadow:0 10px 30px rgba(0,0,0,.25);text-align:center;color:#33531d;
}
.gs-menu h3{margin:0 0 2px;font-size:1.35rem;color:#2f4d1a}
.gs-menu .gs-sub{margin:0 0 14px;font-size:.86rem;color:#6f8a55}
.gs-over-msg{display:none}
.gs-menu.gs-over .gs-over-msg{display:block;margin:0 0 14px}
.gs-menu.gs-over .gs-over-msg p{margin:.2em 0;color:#6f8a55;font-size:.9rem}
.gs-group{margin:10px 0;text-align:left}
.gs-group > span{display:block;font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;color:#8aa06f;margin-bottom:6px;font-weight:700}
.gs-opts{display:flex;gap:6px}
.gs-opt{
  flex:1;padding:8px 4px;border:1px solid #cfe0b4;background:#f3f8ea;color:#4a6b2d;
  border-radius:9px;font:inherit;font-size:.82rem;font-weight:700;cursor:pointer;transition:.12s;
}
.gs-opt:hover{background:#e9f2d9}
.gs-opt.gs-sel{background:#5aa02f;border-color:#5aa02f;color:#fff}
.gs-play{
  margin-top:16px;width:100%;padding:13px;border:0;border-radius:11px;cursor:pointer;
  background:#ea4b3b;color:#fff;font:inherit;font-size:1.05rem;font-weight:800;letter-spacing:.02em;
  box-shadow:0 4px 0 #c33627;transition:.1s;
}
.gs-play:hover{filter:brightness(1.05)}
.gs-play:active{transform:translateY(2px);box-shadow:0 2px 0 #c33627}

.gs-dpad{
  display:none;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,46px);
  gap:6px;padding:12px 16px 16px;max-width:220px;margin-inline:auto;
}
.gs-dpad button{
  background:#4a7a2e;color:#fff;border:0;border-radius:10px;font-size:1.1rem;cursor:pointer;
}
.gs-dpad button:active{background:#3c661f}
.gs-dpad .up{grid-area:1/2}.gs-dpad .left{grid-area:2/1}.gs-dpad .down{grid-area:3/2}.gs-dpad .right{grid-area:2/3}
.gs-caption{margin:10px 2px 0;font-size:.8rem;color:var(--muted);text-align:center}

@media (max-width:760px){
  .gs-dpad{display:grid}
}
@media (prefers-reduced-motion:reduce){
  .gs-play{transition:none}
}

/* Homepage hero: stacked — intro on top, wide landscape game below */
.gs-hero{display:block}
.gs-hero-intro{max-width:820px}
.gs-hero-intro .lead{max-width:64ch}
.gs-hero #gsnake.gs-card{margin-top:26px}
.gs-hero .gs-caption{max-width:820px;margin-inline:auto}
@media (min-width:900px){
  /* center the wide board under the heading on desktop */
  .gs-hero-intro{margin-inline:auto;text-align:center}
  .gs-hero-intro .lead{margin-inline:auto}
  .gs-hero-intro .btn-row{justify-content:center}
}