.crontab-section {
    margin-bottom: 2rem;
}

.crontab-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(45px, 1fr));
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.crontab-btn {
    padding: 0.5rem;
    border: 1px solid #e5e7eb;
    background-color: white;
    border-radius: 0.375rem;
    cursor: pointer;
    text-align: center;
    font-size: 0.875rem;
    position: relative;
    transition: all 0.2s;
}

.crontab-btn:hover {
    border-color: #3b82f6;
    color: #3b82f6;
}

.crontab-btn.active {
    background-color: #3b82f6;
    color: white;
    border-color: #3b82f6;
}

.result-box {
    background-color: #1f2937;
    color: #10b981;
    font-family: 'JetBrains Mono', monospace;
    padding: 1rem;
    border-radius: 0.5rem;
    margin-top: 1rem;
    font-size: 1.1rem;
    word-break: break-all;
    min-height: 3.5rem;
    display: flex;
    align-items: center;
}

.control-panel {
    background-color: white;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

#btn-copy {
    background-color: #2563eb;
    /* blue-600 */
    color: white;
    border: none;
    cursor: pointer;
}

#btn-copy:hover {
    background-color: #1d4ed8;
    /* blue-700 */
}