style.qss

QMainWindow {
    background-color: #333;
    font-family: Arial, sans-serif;
}

QPushButton#mainButton, QPushButton#dialogButton {
    background-color: #28a745;
    color: white;
    border: none;
    border-radius: 5px;
    padding: 15px;
    font-size: 18px;
}

QPushButton#blockButton {
    color: white;
    border: none;
    border-radius: 5px;
    padding: 15px;
    font-size: 18px;
}

QPushButton#blockButton:hover {
    background-color: #cc3333;
}

QPushButton#mainButton:hover, QPushButton#dialogButton:hover {
    background-color: #4CAF50;
}

QLabel {
    color: #FFFFFF;
    font-size: 20px;
    padding: 5px;
    text-align: left;
}

QLineEdit {
    background-color: #333;
    color: #FFFFFF;
    border: 1px solid #4CAF50;
    border-radius: 8px;
    padding: 8px;
    font-size: 16px;
}

QListWidget {
    background-color: #2A2A2A;
    color: #FFFFFF;
    border: 1px solid #4CAF50;
    border-radius: 5px;
    padding: 5px;
}

QDialog {
    background-color: #2C2C2C;
}

QComboBox {
    background-color: #333;
    color: #FFFFFF;
    border: 1px solid #4CAF50;
    border-radius: 8px;
    padding: 5px;
    font-size: 16px;
}

QComboBox QAbstractItemView {
    background-color: #333;
    color: #FFFFFF;
    border: 1px solid #4CAF50;
}

QHBoxLayout, QVBoxLayout {
    background-color: #333;
}

QGroupBox {
    border: 1px solid #4CAF50;
    border-radius: 5px;
    margin-top: 10px;
}

QGroupBox::title {
    subcontrol-origin: margin;
    subcontrol-position: top center;
    padding: 0 3px;
    color: #FFFFFF;
    background-color: #2C2C2C;
    border-radius: 5px;
}

QCheckBox {
    padding: 5px;
    spacing: 10px;
    font-size: 16px;
    color: #FFFFFF;
}

QCheckBox::indicator {
    width: 20px;
    height: 20px;
}

QCheckBox::indicator:unchecked {
    image: url(icons/checkbox_unchecked.png);
}

QCheckBox::indicator:checked {
    image: url(icons/checkbox_checked.png);
}