/* Simple pixel-ish styles */
:root{--bg:#0b0b12;--card:#111218;--accent:#ffcc33;--muted:#9aa0a6}
*{box-sizing:border-box;font-family:ui-sans-serif,system-ui,Segoe UI,Roboto,"Helvetica Neue",Arial}
body{margin:0;background:linear-gradient(180deg,#071021, #0b0b12);color:#e7eef8;min-height:100vh}
.centered{display:flex;align-items:center;justify-content:center;height:100vh}
.card{background:var(--card);padding:20px;border-radius:12px;box-shadow:0 6px 20px rgba(0,0,0,.6);width:320px;text-align:center}
input{display:block;width:100%;padding:10px;margin:8px 0;border-radius:6px;border:1px solid #222;background:#0d1014;color:#e7eef8}
button{padding:10px;border-radius:8px;border:0;background:var(--accent);color:#071021;font-weight:700;cursor:pointer}
button.big{font-size:20px;padding:18px 22px;border-radius:12px}
.link-row{display:flex;justify-content:space-between;margin-top:10px}
.muted{color:var(--muted)}
.small{font-size:12px}
.error{color:#ff6b6b;margin-bottom:6px}

/* layout */
.topbar{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;background:rgba(255,255,255,0.03);backdrop-filter:blur(4px)}
.brand{font-weight:800;font-size:18px;letter-spacing:1px}
.container{display:flex;gap:14px;padding:18px}
.game-area{flex:1;background:linear-gradient(180deg,#0b1220,#071026);padding:18px;border-radius:12px;min-height:60vh;position:relative}
.sidebar{width:320px;background:rgba(255,255,255,0.02);padding:12px;border-radius:12px}

/* pixel art placeholder */
.pixel-art{width:160px;height:120px;margin:10px auto;border:4px solid rgba(255,255,255,0.03);display:grid;grid-template-columns:repeat(16,1fr);grid-template-rows:repeat(12,1fr)}
.pixel-art div{width:100%;height:100%}

/* progress */
.progress-holder{height:12px;background:#07121a;border-radius:8px;margin-top:12px;overflow:hidden}
.progress{height:100%;width:0;background:linear-gradient(90deg,var(--accent),#ffd973);transition:width .3s}

/* shop */
#shop-list{display:flex;flex-direction:column;gap:8px}
.shop-item{background:#071726;padding:8px;border-radius:8px;display:flex;justify-content:space-between;align-items:center}
.ach{background:#071726;padding:6px;border-radius:6px;margin:6px 0}

/* small screens */
@media(max-width:900px){.container{flex-direction:column}.sidebar{width:100%}}