.irc-calculator {
    max-width: 420px;
    background: #ffffff;
    padding: 25px;
    margin: 20px auto;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    font-family: 'Segoe UI', sans-serif;
}
.irc-calculator h2 {
    text-align: center;
    color: #0a6aad;
    margin-bottom: 20px;
}
.irc-calculator label {
    font-weight: 600;
    display: block;
    margin-bottom: 8px;
    color: #333;
}
.irc-calculator input {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 16px;
}
.irc-calculator button {
    width: 100%;
    padding: 12px;
    background: #0a6aad;
    color: #fff;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
}
.irc-calculator button:hover {
    background: #084d86;
}
#irc-result p {
    margin: 10px 0;
    font-size: 16px;
    color: #444;
}
.irc-calculator .credit {
    text-align: center;
    font-size: 13px;
    color: #777;
    margin-top: 15px;
}
.irc-calculator .credit a {
    color: #0a6aad;
    text-decoration: none;
}