.b64-container {
    max-width: 600px;
    margin: 30px auto;
    background: #f2f2f2;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
}

.b64-header {
    background: #00f0ff;
    padding: 15px;
    font-size: 20px;
    font-weight: bold;
    color: #222;
    border-radius: 8px;
    margin-bottom: 15px;
}

#b64-input {
    width: 100%;
    height: 120px;
    padding: 10px;
    border-radius: 8px;
    border: 1px solid #ccc;
    resize: none;
    margin-bottom: 15px;
    color: #222;
}

.b64-buttons button {
    background: #00f0ff;
    border: none;
    padding: 10px 15px;
    margin: 5px;
    cursor: pointer;
    border-radius: 6px;
    transition: 0.3s;
}

.b64-buttons button:hover {
    opacity: 0.8;
}

#b64-result {
    margin-top: 20px;
}

.b64-image {
    max-width: 100%;
    border-radius: 8px;
    margin-bottom: 10px;
}

.download-btn {
    display: inline-block;
    background: #00f0ff;
    padding: 10px 15px;
    border-radius: 6px;
    text-decoration: none;
    color: #000;
}

.error {
    color: red;
}