/* assets/style.css - minimal, fast, responsive */
:root{
  --bg:#0b0f14; --card:#111827; --muted:#9aa4b2; --txt:#e5e7eb; --brand:#22c55e;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--txt)}
a{color:var(--brand);text-decoration:none}
.container{max-width:1000px;margin:0 auto;padding:16px}
header{display:flex;align-items:center;justify-content:space-between;padding:20px 16px}
.brand a{font-weight:700;font-size:20px}
nav a{margin-left:12px;color:var(--muted)}
.card{background:var(--card);border-radius:16px;padding:20px;margin:16px 0;box-shadow:0 10px 25px rgba(0,0,0,.2)}
.card.subtle{background:#0f1623}
.hero h1{font-size:28px;margin:0 0 10px}
.hero p{color:var(--muted);margin:0 0 16px}
.grid{display:grid;grid-template-columns:1fr auto;gap:10px}
input[type=url]{padding:14px 16px;border-radius:12px;border:1px solid #223047;background:#0d1420;color:#fff;outline:none}
button{padding:14px 18px;border:none;border-radius:12px;background:var(--brand);color:#07120a;font-weight:700;cursor:pointer}
button:disabled{opacity:.6;cursor:not-allowed}
.alert{padding:12px 14px;border-radius:10px;margin-bottom:10px}
.alert.error{background:#3b0f15;color:#ffb4b4}
.result{padding:16px}
.result a{display:inline-block;margin-top:8px}
.note{color:var(--muted);font-size:14px;margin-top:10px}
.footer{display:flex;align-items:center;justify-content:space-between;color:var(--muted)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media (max-width:640px){.grid{grid-template-columns:1fr}.hero h1{font-size:24px}}