* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Inter", sans-serif;
}

body {
font-family: Arial, sans-serif;
background: linear-gradient(135deg, #020617, #000000);
color: #e5e7eb;
display: flex;
align-items: center;
justify-content: center;
height: 100vh;
margin: 0;
}
.card {
background: #020617;
padding: 2.5rem;
border-radius: 20px;
width: 100%;
max-width: 420px;
box-shadow: 0 25px 60px rgba(0,0,0,0.6);
animation: pop 0.6s ease;
}
@keyframes pop {
from { transform: scale(0.95); opacity: 0; }
to { transform: scale(1); opacity: 1; }
}
h1 {
text-align: center;
margin-bottom: 0.5rem;
}
p {
text-align: center;
color: #9ca3af;
font-size: 0.95rem;
}
input {
width: 100%;
padding: 0.85rem;
border-radius: 10px;
border: none;
margin-top: 1.2rem;
font-size: 1rem;
outline: none;
}
button {
width: 100%;
margin-top: 1rem;
padding: 0.85rem;
border-radius: 10px;
border: none;
background: linear-gradient(135deg, #ef4444, #7c2d12);
color: white;
font-size: 1rem;
cursor: pointer;
}
button:hover {
opacity: 0.9;
}
.result {
margin-top: 1.5rem;
text-align: center;
font-size: 1.15rem;
min-height: 2.5rem;
}