/* ============ MIT Games — Light Theme ============ */
:root{
  --bg:#ffffff;
  --bg-soft:#f6f8ff;
  --card:#ffffff;
  --ink:#141a2e;
  --muted:#5b6478;
  --brand:#5b5bff;
  --brand2:#00c9a7;
  --accent:#ffb03a;
  --ring:rgba(91,91,255,.18);
  --shadow:0 10px 30px rgba(20,26,46,.08);
  --radius:18px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Inter","Segoe UI",system-ui,-apple-system,sans-serif;
  background:var(--bg);color:var(--ink);
  overflow-x:hidden;line-height:1.6;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1160px,92%);margin:0 auto}

/* ---------- Navbar ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  backdrop-filter:blur(14px);
  background:rgba(255,255,255,.78);
  border-bottom:1px solid rgba(20,26,46,.06);
  transition:box-shadow .3s;
}
.nav.scrolled{box-shadow:0 6px 24px rgba(20,26,46,.08)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.25rem;letter-spacing:-.5px}
.logo-dot{width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand),var(--brand2));
  display:grid;place-items:center;color:#fff;font-size:.9rem;animation:pulse 2.6s ease-in-out infinite}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.08) rotate(6deg)}}
.logo span em{color:var(--brand);font-style:normal}
.nav-links{display:flex;gap:26px;align-items:center;font-weight:600;font-size:.95rem}
.nav-links a{position:relative;padding:6px 2px;color:var(--muted);transition:color .25s}
.nav-links a:hover,.nav-links a.active{color:var(--ink)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand2));transition:width .3s}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 26px;border-radius:999px;font-weight:700;font-size:.95rem;
  border:0;cursor:pointer;transition:transform .2s,box-shadow .2s;
  will-change:transform;
}
.btn-primary{background:linear-gradient(135deg,var(--brand),#7b6cff);color:#fff;
  box-shadow:0 8px 22px var(--ring)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 14px 30px var(--ring)}
.btn-ghost{background:#fff;color:var(--ink);border:2px solid rgba(20,26,46,.1)}
.btn-ghost:hover{transform:translateY(-3px);border-color:var(--brand);color:var(--brand)}
.btn:active{transform:translateY(-1px) scale(.97)}
.burger{display:none;background:none;border:0;cursor:pointer;font-size:1.5rem}
@media(max-width:820px){
  .nav-links{position:fixed;inset:64px 0 auto 0;background:#fff;flex-direction:column;
    padding:20px;gap:16px;transform:translateY(-140%);transition:transform .35s;
    box-shadow:0 20px 30px rgba(20,26,46,.12);border-radius:0 0 20px 20px}
  .nav-links.open{transform:translateY(0)}
  .burger{display:block}
}

/* ---------- Hero ---------- */
.hero{padding:170px 0 90px;position:relative;overflow:hidden;
  background:
    radial-gradient(600px 400px at 85% 10%, rgba(91,91,255,.10), transparent 60%),
    radial-gradient(500px 380px at 8% 80%, rgba(0,201,167,.10), transparent 60%),
    var(--bg-soft);
}
.blobs i{position:absolute;border-radius:50%;filter:blur(2px);opacity:.55;pointer-events:none;
  animation:float 9s ease-in-out infinite}
.blobs i:nth-child(1){width:120px;height:120px;top:12%;left:6%;background:#e3e6ff}
.blobs i:nth-child(2){width:70px;height:70px;top:60%;left:14%;background:#d9f7f0;animation-delay:-3s}
.blobs i:nth-child(3){width:90px;height:90px;top:22%;right:10%;background:#ffeecf;animation-delay:-5s}
.blobs i:nth-child(4){width:50px;height:50px;bottom:14%;right:20%;background:#e3e6ff;animation-delay:-7s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-26px)}}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;position:relative}
@media(max-width:920px){.hero-grid{grid-template-columns:1fr}}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid rgba(20,26,46,.08);
  padding:8px 16px;border-radius:999px;font-size:.8rem;font-weight:700;color:var(--brand);
  box-shadow:var(--shadow);margin-bottom:20px}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--brand2);
  animation:pulse 2s infinite}
h1{font-size:clamp(2.3rem,5vw,3.6rem);line-height:1.12;letter-spacing:-1.5px;font-weight:800}
h1 .grad{background:linear-gradient(120deg,var(--brand),var(--brand2));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{margin:20px 0 30px;color:var(--muted);font-size:1.1rem;max-width:520px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}

/* hero card mock */
.hero-card{background:var(--card);border-radius:26px;box-shadow:0 24px 60px rgba(20,26,46,.12);
  padding:26px;border:1px solid rgba(20,26,46,.05);animation:bob 6s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(-12px) rotate(.6deg)}}
.hero-card .screen{height:230px;border-radius:16px;
  background:linear-gradient(135deg,#6b6bff,#00c9a7);position:relative;overflow:hidden}
.hero-card .screen::after{content:"▶";position:absolute;inset:0;display:grid;place-items:center;
  color:#fff;font-size:3rem;opacity:.9;animation:pulse 2.4s infinite}
.hud{display:flex;justify-content:space-between;margin-top:16px;font-weight:700;font-size:.9rem}
.hud span:last-child{color:var(--brand2)}
.bar{height:10px;border-radius:99px;background:var(--bg-soft);margin-top:12px;overflow:hidden}
.bar i{display:block;height:100%;width:72%;border-radius:99px;
  background:linear-gradient(90deg,var(--brand),var(--brand2));animation:load 3s ease-in-out infinite alternate}
@keyframes load{to{width:94%}}

/* ---------- Sections ---------- */
section{padding:90px 0}
.sec-head{text-align:center;max-width:640px;margin:0 auto 56px}
.sec-head h2{font-size:clamp(1.8rem,3.6vw,2.5rem);letter-spacing:-1px;font-weight:800}
.sec-head p{color:var(--muted);margin-top:12px}

/* stats / infographics */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media(max-width:820px){.stats{grid-template-columns:repeat(2,1fr)}}
.stat{background:var(--card);border:1px solid rgba(20,26,46,.06);border-radius:var(--radius);
  padding:30px 22px;text-align:center;box-shadow:var(--shadow);transition:transform .3s}
.stat:hover{transform:translateY(-8px)}
.stat b{font-size:2.4rem;letter-spacing:-1px;display:block;
  background:linear-gradient(120deg,var(--brand),var(--brand2));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{color:var(--muted);font-size:.9rem;font-weight:600}
.stat .spark{margin-top:14px;height:44px}

/* game cards */
.games-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:26px}
.game-card{background:var(--card);border-radius:22px;overflow:hidden;
  border:1px solid rgba(20,26,46,.06);box-shadow:var(--shadow);
  transition:transform .3s,box-shadow .3s;position:relative}
.game-card:hover{transform:translateY(-8px);box-shadow:0 22px 46px rgba(20,26,46,.14)}
.game-cover{height:170px;display:grid;place-items:center;font-size:4rem;position:relative;overflow:hidden}
.game-cover::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 55%,rgba(0,0,0,.18));}
.gc-snake{background:linear-gradient(135deg,#e0e7ff,#c7f9ec)}
.game-body{padding:20px 22px 24px}
.game-body h3{font-size:1.2rem;letter-spacing:-.5px}
.game-body .tag{display:inline-block;font-size:.72rem;font-weight:700;color:var(--brand);
  background:rgba(91,91,255,.1);padding:4px 12px;border-radius:99px;margin-bottom:10px}
.game-body p{color:var(--muted);font-size:.92rem;margin:8px 0 16px}
.play-btn{width:100%;justify-content:center}
.badge-new{position:absolute;top:14px;left:14px;z-index:2;background:var(--accent);color:#fff;
  font-size:.72rem;font-weight:800;padding:5px 12px;border-radius:99px;letter-spacing:.5px;
  animation:pulse 2.4s infinite}

/* game modal */
.modal{position:fixed;inset:0;z-index:200;display:none;place-items:center;
  background:rgba(20,26,46,.55);backdrop-filter:blur(6px);padding:20px}
.modal.open{display:grid}
.modal-box{background:#fff;border-radius:24px;padding:24px;max-width:560px;width:100%;
  box-shadow:0 30px 80px rgba(0,0,0,.3);animation:pop .35s cubic-bezier(.2,.9,.3,1.3)}
@keyframes pop{from{transform:scale(.85);opacity:0}}
.modal-box header{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.modal-box h3{letter-spacing:-.5px}
.close{background:#f0f2fa;border:0;width:36px;height:36px;border-radius:50%;font-size:1.1rem;
  cursor:pointer;transition:transform .2s,background .2s}
.close:hover{background:#ffe3e3;transform:rotate(90deg)}
#gameCanvas{width:100%;border-radius:14px;background:#0f172a;display:block;touch-action:none}
.modal-hint{text-align:center;color:var(--muted);font-size:.85rem;margin-top:12px}
#snakeScore{position:absolute;top:10px;left:14px;color:#a5b4fc;font-weight:700;font-family:monospace}
.canvas-wrap{position:relative}

/* features */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media(max-width:900px){.features{grid-template-columns:1fr}}
.feature{background:var(--card);border-radius:var(--radius);padding:30px 26px;
  border:1px solid rgba(20,26,46,.06);box-shadow:var(--shadow);transition:transform .3s}
.feature:hover{transform:translateY(-6px)}
.feature .ico{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;
  font-size:1.5rem;margin-bottom:16px;
  background:linear-gradient(135deg,rgba(91,91,255,.12),rgba(0,201,167,.12))}
.feature h3{font-size:1.1rem;margin-bottom:8px}
.feature p{color:var(--muted);font-size:.92rem}

/* chai empire page */
.ce-hero{padding:170px 0 80px;background:
  radial-gradient(700px 420px at 80% 0%, rgba(255,176,58,.14), transparent 60%),
  radial-gradient(600px 400px at 5% 70%, rgba(91,91,255,.12), transparent 60%),var(--bg-soft)}
.ce-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
@media(max-width:920px){.ce-grid{grid-template-columns:1fr}}
.store-badges{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap}
.store-badge{display:flex;align-items:center;gap:12px;background:#141a2e;color:#fff;
  padding:12px 20px;border-radius:14px;transition:transform .25s,box-shadow .25s;cursor:pointer;border:0}
.store-badge:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(20,26,46,.3)}
.store-badge small{display:block;font-size:.68rem;opacity:.7}
.store-badge b{font-size:1rem}
.ce-visual{aspect-ratio:9/16;max-width:340px;margin:0 auto;border-radius:38px;position:relative;
  background:linear-gradient(160deg,#2b2b6f,#0f8f76);box-shadow:0 34px 70px rgba(20,26,46,.25);
  overflow:hidden;animation:bob 7s ease-in-out infinite}
.ce-visual .cup{position:absolute;top:34%;left:50%;transform:translateX(-50%);
  font-size:7rem;filter:drop-shadow(0 18px 24px rgba(0,0,0,.3))}
.ce-visual .steam{position:absolute;top:22%;left:50%;transform:translateX(-50%);
  display:flex;gap:10px}
.ce-visual .steam i{width:8px;height:34px;border-radius:99px;background:rgba(255,255,255,.7);
  animation:steam 2.6s ease-in-out infinite}
.ce-visual .steam i:nth-child(2){animation-delay:.5s}
.ce-visual .steam i:nth-child(3){animation-delay:1s}
@keyframes steam{0%{transform:translateY(0) scaleY(1);opacity:.8}
  100%{transform:translateY(-26px) scaleY(.4);opacity:0}}
.ce-visual .floor{position:absolute;bottom:0;left:0;right:0;height:26%;
  background:linear-gradient(180deg,rgba(0,0,0,0),rgba(0,0,0,.35))}
.screenshots{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:820px){.screenshots{grid-template-columns:1fr}}
.shot{aspect-ratio:9/14;border-radius:22px;position:relative;overflow:hidden;box-shadow:var(--shadow);
  transition:transform .35s}
.shot:hover{transform:translateY(-10px) scale(1.02)}
.shot::before{content:attr(data-label);position:absolute;bottom:14px;left:14px;right:14px;
  background:rgba(255,255,255,.92);border-radius:12px;padding:8px 14px;font-weight:700;font-size:.85rem;
  box-shadow:0 8px 20px rgba(0,0,0,.15)}
.shot.s1{background:linear-gradient(160deg,#ffb03a,#ff7b54)}
.shot.s2{background:linear-gradient(160deg,#5b5bff,#a855f7)}
.shot.s3{background:linear-gradient(160deg,#00c9a7,#38bdf8)}
.shot .emo{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:4.4rem;
  animation:float 5s ease-in-out infinite}

/* privacy */
.privacy-hero{padding:160px 0 60px;background:var(--bg-soft);text-align:center}
.legal{max-width:760px;margin:0 auto}
.legal h2{font-size:1.35rem;margin:36px 0 12px;letter-spacing:-.5px}
.legal h2:first-child{margin-top:0}
.legal p,.legal li{color:var(--muted);font-size:.98rem}
.legal ul{padding-left:22px;margin-top:8px}
.legal li{margin-bottom:6px}
.legal .updated{display:inline-block;background:rgba(0,201,167,.12);color:#0a8a72;font-weight:700;
  padding:6px 16px;border-radius:99px;font-size:.85rem;margin-bottom:10px}

/* faq */
.faq{max-width:720px;margin:0 auto;display:grid;gap:14px}
.faq-item{background:var(--card);border:1px solid rgba(20,26,46,.08);border-radius:16px;
  overflow:hidden;transition:box-shadow .3s}
.faq-item[open]{box-shadow:var(--shadow)}
.faq-item summary{padding:18px 22px;font-weight:700;cursor:pointer;list-style:none;
  display:flex;justify-content:space-between;align-items:center}
.faq-item summary::after{content:"+";font-size:1.3rem;color:var(--brand);transition:transform .3s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .a{padding:0 22px 18px;color:var(--muted);font-size:.94rem}

/* footer + marquee */
.marquee{overflow:hidden;border-block:1px solid rgba(20,26,46,.07);background:#fff;padding:16px 0}
.marquee-track{display:flex;gap:44px;white-space:nowrap;width:max-content;animation:scroll 24s linear infinite;font-weight:700;color:var(--muted)}
@keyframes scroll{to{transform:translateX(-50%)}}
.footer{background:#0f1424;color:#aab2c8;padding:60px 0 30px;margin-top:40px}
.footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}
@media(max-width:760px){.footer .cols{grid-template-columns:1fr}}
.footer h4{color:#fff;margin-bottom:14px;font-size:1rem}
.footer a{display:block;padding:4px 0;font-size:.9rem;transition:color .2s}
.footer a:hover{color:#fff}
.footer .copy{text-align:center;margin-top:44px;font-size:.82rem;opacity:.6}

/* reveal animations */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
.reveal[data-delay="1"]{transition-delay:.12s}
.reveal[data-delay="2"]{transition-delay:.24s}
.reveal[data-delay="3"]{transition-delay:.36s}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}}