:root{
  --accent:#00ff7f; --accent-dim:rgba(0,255,127,.3); --danger:#ff3b3b;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0;background:#000;color:var(--accent);font-family:ui-monospace,Menlo,Monaco,"Roboto Mono",monospace;overflow:hidden}
#matrix{position:fixed;inset:0;z-index:0}
.overlay{position:relative;z-index:1;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}
.card{width:860px;max-width:96%;padding:34px;border-radius:16px;background:linear-gradient(180deg,rgba(0,0,0,.55),rgba(10,10,10,.7));border:1px solid rgba(0,255,127,.15);box-shadow:0 16px 60px rgba(0,0,0,.7);backdrop-filter:blur(8px)}
.logo{margin:0 0 6px;font-size:56px;letter-spacing:10px}
.logo .gg{color:var(--danger);text-shadow:0 0 12px rgba(255,59,59,.8)}
.subtitle{margin:6px 0 18px;color:var(--accent-dim)}
.code-form{display:flex;gap:12px;align-items:center}
.code-form input{flex:1;padding:16px 18px;border-radius:10px;border:2px solid rgba(0,255,127,.35);background:rgba(0,0,0,.45);color:var(--accent);font-size:20px;outline:none}
.code-form button{padding:14px 22px;border-radius:10px;border:2px solid rgba(0,255,127,.35);background:#0b3; color:#eafff4;font-weight:700;cursor:pointer}
.code-form button[disabled]{opacity:.6;cursor:not-allowed}
.message{margin-top:14px;min-height:28px}
.message.err{color:#ff6b6b}
.message.ok{color:var(--accent)}
.success-text{white-space:pre-wrap;font-size:22px;line-height:1.55;margin-top:18px}
@media (max-width:640px){.logo{font-size:40px;letter-spacing:8px}.card{padding:22px}}