* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    min-height: 100vh;
    background: linear-gradient(135deg, #07152d, #123d75);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 25px;
}

.contenedor {
    width: 100%;
    max-width: 850px;
    background: #10233e;
    padding: 35px;
    border-radius: 18px;
    box-shadow: 0 15px 45px #0005;
}

header {
    text-align: center;
    padding-bottom: 25px;
    border-bottom: 1px solid #38516e;
}

header h1 {
    color: #67aeff;
    margin-bottom: 10px;
}

header p {
    color: #bed0e7;
}

.introduccion {
    text-align: center;
    padding: 25px 0;
}

.introduccion p {
    margin-top: 12px;
    color: #b5c7df;
}

.botones {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

button {
    background: #2675e8;
    border: none;
    color: white;
    padding: 14px 28px;
    border-radius: 9px;
    font-size: 16px;
    cursor: pointer;
    transition: 0.2s;
}

button:hover,
button.activo {
    background: #1250af;
    transform: translateY(-2px);
}

.resultado {
    margin-top: 30px;
}

.resultado h2 {
    margin-bottom: 20px;
    color: #67aeff;
}

.hash {
    background: #07182e;
    padding: 18px;
    border-radius: 10px;
    margin-bottom: 15px;
}

.hash h3 {
    margin-bottom: 10px;
    color: #80beff;
}

.hash p {
    font-family: Consolas, monospace;
    color: #e5edf8;
    overflow-wrap: anywhere;
    line-height: 1.7;
}

[hidden] {
    display: none !important;
}

footer {
    text-align: center;
    margin-top: 30px;
    color: #8da8c8;
    font-size: 13px;
}

@media (max-width: 600px) {
    .contenedor {
        padding: 20px;
    }

    button {
        width: 100%;
    }
}