.copy-btn {
    width: 60px;
    height: 30px;
    padding: 0.3rem 0.6rem;
    justify-content: center;
    align-items: center;
    background-color: #3498db;
    color: #ecf0f1;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: background-color 0.3s ease, color 0.3s ease;
    font-size: 16px;
}

.copy-btn:hover {
    background-color: #2980b9;
}

.copy-btn .checkmark {
    display: none;
    font-size: 16px;
}

.copy-btn.copied {
    background-color: #2ecc71;
    transition: background-color 0.3s ease;
}

.copy-btn.copied .btn-text {
    display: none;
}

.copy-btn.copied .checkmark {
    display: inline;
    color: #ecf0f1;
}