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

body{
    background:#0f172a;
    color:white;
    min-height:100vh;
    padding:30px;
    transition:.3s;
}

.container{
    max-width:900px;
    margin:auto;
}

h1{
    text-align:center;
    margin-bottom:25px;
}

.card{
    background:#1e293b;
    border-radius:15px;
    padding:20px;
    margin-bottom:20px;
    box-shadow:0 0 20px rgba(0,0,0,.3);
}

button{
    padding:10px 15px;
    border:none;
    border-radius:10px;
    cursor:pointer;
    background:#3b82f6;
    color:white;
    margin:5px;
    transition:.2s;
}

button:hover{
    transform:scale(1.05);
}

input[type="text"]{
    width:100%;
    padding:10px;
    border:none;
    border-radius:10px;
    margin-top:10px;
}

.progress{
    width:100%;
    height:25px;
    background:#334155;
    border-radius:20px;
    overflow:hidden;
    margin-top:10px;
}

#barra{
    width:50%;
    height:100%;
    background:#22c55e;
    transition:.2s;
}

#contador,
#random,
#hora,
#salida{
    margin-top:10px;
    font-size:1.3rem;
    font-weight:bold;
}