@font-face{font-family:"Syne";src:url(../fonts/syne-latin-wght-normal.woff2) format("woff2-variations"),url(../fonts/syne-latin-wght-normal.woff2) format("woff2");font-weight:400 800;font-display:swap}
@font-face{font-family:"Inter";src:url(../fonts/inter-latin-wght-normal.woff2) format("woff2-variations"),url(../fonts/inter-latin-wght-normal.woff2) format("woff2");font-weight:100 900;font-display:swap}

:root{--accent:#c8ff4d;--text:#f2f1ec;--muted:rgba(242,241,236,.6);--fade:1.2s}
*{box-sizing:border-box}
html,body{margin:0;height:100%;background:#000;color:var(--text);overflow:hidden;
  font-family:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;-webkit-font-smoothing:antialiased}
body.idle,body.idle *{cursor:none!important}

#stage{position:fixed;inset:0;background:#000}
.layer{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;
  transition:opacity var(--fade) linear;background:#000}
.fit-contain .layer{object-fit:contain}
.layer.is-active{opacity:1}

/* start screen */
#intro{position:fixed;inset:0;display:flex;align-items:flex-end;padding:clamp(24px,6vw,72px);
  background:linear-gradient(180deg,rgba(0,0,0,.15) 0%,rgba(0,0,0,.85) 100%);z-index:5;transition:opacity .5s}
body:not(.is-intro) #intro{opacity:0;pointer-events:none}
.intro-inner{max-width:760px}
.kicker{margin:0 0 10px;font-size:13px;letter-spacing:.24em;text-transform:uppercase;color:var(--accent)}
#intro h1{margin:0;font-family:"Syne",sans-serif;font-weight:800;font-size:clamp(44px,9vw,128px);line-height:.92;letter-spacing:-.02em;text-transform:uppercase}
.meta{margin:14px 0 28px;color:var(--muted);font-size:17px}
.keys{margin:24px 0 0;color:var(--muted);font-size:13px}
.btn-primary,.btn-ghost{font:600 16px/1 "Inter",sans-serif;padding:16px 26px;border-radius:999px;cursor:pointer;margin:0 10px 10px 0;border:1px solid var(--accent)}
.btn-primary{background:var(--accent);color:#0a0a0b}
.btn-ghost{background:transparent;color:var(--text);border-color:rgba(242,241,236,.4)}
.btn-primary:hover{filter:brightness(1.08)}
.btn-ghost:hover{border-color:var(--text)}
button:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* title overlay */
#hud{position:fixed;left:clamp(16px,3vw,40px);bottom:clamp(16px,3vw,36px);z-index:3;display:flex;gap:14px;align-items:baseline;
  opacity:0;transition:opacity .8s;pointer-events:none;text-shadow:0 1px 12px rgba(0,0,0,.7)}
#hud.show{opacity:1}
#hud-title{font-family:"Syne",sans-serif;font-weight:700;font-size:clamp(18px,2vw,28px);text-transform:uppercase;letter-spacing:.02em}
#hud-count{font-size:13px;color:var(--muted);letter-spacing:.1em}

/* control bar */
#bar{position:fixed;top:14px;right:14px;z-index:4;display:flex;align-items:center;gap:4px;padding:6px;border-radius:999px;
  background:rgba(10,10,11,.72);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.1);opacity:0;transform:translateY(-8px);transition:opacity .3s,transform .3s;pointer-events:none}
body.active:not(.is-intro) #bar{opacity:1;transform:none;pointer-events:auto}
#bar button,#bar a{font:500 13px/1 "Inter",sans-serif;color:var(--text);background:transparent;border:0;padding:10px 12px;border-radius:999px;cursor:pointer;text-decoration:none;white-space:nowrap}
#bar button:hover,#bar a:hover{background:rgba(255,255,255,.1)}
#bar button.on{color:#0a0a0b;background:var(--accent)}
#bar .sep{width:1px;height:18px;background:rgba(255,255,255,.15);margin:0 4px}
@media (max-width:700px){
  #bar{left:10px;right:10px;top:auto;bottom:10px;justify-content:space-between;overflow-x:auto}
  #bar .sep,#btn-mute{display:none}
  #hud{bottom:80px}
}

/* help */
#help{position:fixed;z-index:6;top:50%;left:50%;transform:translate(-50%,-50%);width:min(420px,calc(100vw - 32px));
  padding:28px 30px;background:rgba(10,10,11,.92);border:1px solid rgba(255,255,255,.12);border-radius:18px;backdrop-filter:blur(14px)}
#help h2{margin:0 0 16px;font-family:"Syne",sans-serif;text-transform:uppercase;font-size:20px}
#help dl{display:grid;grid-template-columns:70px 1fr;gap:10px 14px;margin:0}
#help dt{font-weight:600;color:var(--accent)}
#help dd{margin:0;color:var(--muted)}
#help p{margin:18px 0 0;font-size:13px;color:var(--muted)}

#notice{position:fixed;inset:auto 0 40% 0;text-align:center;color:var(--muted);z-index:2}

@media (prefers-reduced-motion:reduce){.layer{transition:none}}