body {
    font-family: 'Orbitron', sans-serif;
    background-color: #0d0d0d;
    color: #00ffcc;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    box-sizing: border-box;
}

.container {
    text-align: center;
    width: 100%;
    max-width: 400px;
    padding: 20px;
    border-radius: 12px;
    background: linear-gradient(145deg, #1a1a1a, #0a0a0a);
    box-shadow: 0 10px 30px rgba(0, 255, 204, 0.3);
    border: 1px solid #00ffcc;
    box-sizing: border-box;
}

h1 {
    font-size: 2rem;
    margin-bottom: 20px;
    font-weight: 400;
    color: #00ffcc;
    text-shadow: 0 0 8px rgba(0, 255, 204, 0.8);
}

textarea {
    width: calc(100% - 24px);
    height: 100px;
    margin-bottom: 15px;
    padding: 12px;
    border: 1px solid #00ffcc;
    border-radius: 8px;
    background-color: #1a1a1a;
    color: #00ffcc;
    font-size: 1rem;
    resize: none;
    outline: none;
    box-shadow: inset 0 0 8px rgba(0, 255, 204, 0.3);
    transition: all 0.3s ease;
}

textarea:focus {
    border-color: #00cc99;
    box-shadow: inset 0 0 12px rgba(0, 204, 153, 0.5);
}

button {
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    background-color: #00ffcc;
    color: #0d0d0d;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
    outline: none;
    box-shadow: 0 0 8px rgba(0, 255, 204, 0.3);
}

button:hover {
    background-color: #00cc99;
    box-shadow: 0 0 12px rgba(0, 204, 153, 0.5);
}

textarea::placeholder {
    color: #00806a;
}

#output {
    height: 120px;
    margin-top: 10px;
}

@media (max-width: 500px) {
    .container {
        width: 90%;
        padding: 20px;
    }

    h1 {
        font-size: 1.7rem;
    }

    textarea {
        height: 80px;
        font-size: 0.9rem;
    }

    #output {
        height: 100px;
    }
}