* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background: #020617;
    color: #e5e7eb;
    font-family: Arial, Helvetica, sans-serif;
}

.card {
    background: #020617;
    border: 2px solid #22c55e;
    border-radius: 18px;
    padding: 20px;
    box-shadow: 0 0 40px rgba(34,197,94,.45);
}

h1, h2, h3 {
    color: #22c55e;
    margin: 0 0 12px;
}

button {
    width: 100%;
    padding: 14px;
    background: #22c55e;
    color: #020617;
    border: none;
    border-radius: 12px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.2s;
}

button:hover {
    background: #16a34a;
}

input {
    width: 100%;
    padding: 12px;
    margin: 6px 0;
    border-radius: 10px;
    border: 1px solid #334155;
    background: #020617;
    color: #e5e7eb;
}

.info {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    margin: 6px 0;
    color: #cbd5f5;
}

.valor {
    font-size: 28px;
    font-weight: bold;
    color: #22c55e;
    text-align: center;
    margin: 10px 0;
}