Cluster/config/theme.py

"""
Theme and styling configuration for the Cluster4NPU UI application.

This module contains the complete QSS (Qt Style Sheets) theme definitions and color
constants used throughout the application. It provides a harmonious dark theme with
complementary color palette optimized for professional ML pipeline development.

Main Components:
    - HARMONIOUS_THEME_STYLESHEET: Complete QSS dark theme definition
    - Color constants and theme utilities
    - Consistent styling for all UI components

Usage:
    from cluster4npu_ui.config.theme import HARMONIOUS_THEME_STYLESHEET
    
    app.setStyleSheet(HARMONIOUS_THEME_STYLESHEET)
"""

# Harmonious theme with complementary color palette
HARMONIOUS_THEME_STYLESHEET = """
    QWidget {
        background-color: #1e1e2e;
        color: #cdd6f4;
        font-family: "Inter", "SF Pro Display", "Segoe UI", sans-serif;
        font-size: 13px;
    }
    QMainWindow {
        background-color: #181825;
    }
    QDialog {
        background-color: #1e1e2e;
        border: 1px solid #313244;
    }
    QLabel {
        color: #f9e2af;
        font-weight: 500;
    }
    QLineEdit, QTextEdit, QSpinBox, QDoubleSpinBox, QComboBox {
        background-color: #313244;
        border: 2px solid #45475a;
        padding: 8px 12px;
        border-radius: 8px;
        color: #cdd6f4;
        selection-background-color: #74c7ec;
        font-size: 13px;
    }
    QLineEdit:focus, QTextEdit:focus, QSpinBox:focus, QDoubleSpinBox:focus, QComboBox:focus {
        border-color: #89b4fa;
        background-color: #383a59;
        outline: none;
    }
    QLineEdit:hover, QTextEdit:hover, QSpinBox:hover, QDoubleSpinBox:hover, QComboBox:hover {
        border-color: #585b70;
    }
    QPushButton {
        background: qlineargradient(x1:0, y1:0, x2:0, y2:1, stop:0 #89b4fa, stop:1 #74c7ec);
        color: #1e1e2e;
        border: none;
        padding: 10px 16px;
        border-radius: 8px;
        font-weight: 600;
        font-size: 13px;
        min-height: 16px;
    }
    QPushButton:hover {
        background: qlineargradient(x1:0, y1:0, x2:0, y2:1, stop:0 #a6c8ff, stop:1 #89dceb);
    }
    QPushButton:pressed {
        background: qlineargradient(x1:0, y1:0, x2:0, y2:1, stop:0 #7287fd, stop:1 #5fb3d3);
    }
    QPushButton:disabled {
        background-color: #45475a;
        color: #6c7086;
    }
    QDialogButtonBox QPushButton {
        background: qlineargradient(x1:0, y1:0, x2:0, y2:1, stop:0 #89b4fa, stop:1 #74c7ec);
        color: #1e1e2e;
        min-width: 90px;
        margin: 2px;
    }
    QDialogButtonBox QPushButton:hover {
        background: qlineargradient(x1:0, y1:0, x2:0, y2:1, stop:0 #a6c8ff, stop:1 #89dceb);
    }
    QDialogButtonBox QPushButton[text="Cancel"] {
        background-color: #585b70;
        color: #cdd6f4;
        border: 1px solid #6c7086;
    }
    QDialogButtonBox QPushButton[text="Cancel"]:hover {
        background-color: #6c7086;
    }
    QListWidget {
        background-color: #313244;
        border: 2px solid #45475a;
        border-radius: 8px;
        outline: none;
    }
    QListWidget::item {
        padding: 12px;
        border-bottom: 1px solid #45475a;
        color: #cdd6f4;
        border-radius: 4px;
        margin: 2px;
    }
    QListWidget::item:selected {
        background: qlineargradient(x1:0, y1:0, x2:1, y2:0, stop:0 #89b4fa, stop:1 #74c7ec);
        color: #1e1e2e;
        border-radius: 6px;
    }
    QListWidget::item:hover {
        background-color: #383a59;
        border-radius: 6px;
    }
    QSplitter::handle {
        background-color: #45475a;
        width: 3px;
        height: 3px;
    }
    QSplitter::handle:hover {
        background-color: #89b4fa;
    }
    QCheckBox {
        color: #cdd6f4;
        spacing: 8px;
    }
    QCheckBox::indicator {
        width: 18px;
        height: 18px;
        border: 2px solid #45475a;
        border-radius: 4px;
        background-color: #313244;
    }
    QCheckBox::indicator:checked {
        background: qlineargradient(x1:0, y1:0, x2:1, y2:1, stop:0 #89b4fa, stop:1 #74c7ec);
        border-color: #89b4fa;
    }
    QCheckBox::indicator:hover {
        border-color: #89b4fa;
    }
    QScrollArea {
        border: none;
        background-color: #1e1e2e;
    }
    QScrollBar:vertical {
        background-color: #313244;
        width: 14px;
        border-radius: 7px;
        margin: 0px;
    }
    QScrollBar::handle:vertical {
        background: qlineargradient(x1:0, y1:0, x2:1, y2:0, stop:0 #89b4fa, stop:1 #74c7ec);
        border-radius: 7px;
        min-height: 20px;
        margin: 2px;
    }
    QScrollBar::handle:vertical:hover {
        background: qlineargradient(x1:0, y1:0, x2:1, y2:0, stop:0 #a6c8ff, stop:1 #89dceb);
    }
    QScrollBar::add-line:vertical, QScrollBar::sub-line:vertical {
        border: none;
        background: none;
        height: 0px;
    }
    QMenuBar {
        background-color: #181825;
        color: #cdd6f4;
        border-bottom: 1px solid #313244;
        padding: 4px;
    }
    QMenuBar::item {
        padding: 8px 12px;
        background-color: transparent;
        border-radius: 6px;
    }
    QMenuBar::item:selected {
        background: qlineargradient(x1:0, y1:0, x2:0, y2:1, stop:0 #89b4fa, stop:1 #74c7ec);
        color: #1e1e2e;
    }
    QMenu {
        background-color: #313244;
        color: #cdd6f4;
        border: 1px solid #45475a;
        border-radius: 8px;
        padding: 4px;
    }
    QMenu::item {
        padding: 8px 16px;
        border-radius: 4px;
    }
    QMenu::item:selected {
        background: qlineargradient(x1:0, y1:0, x2:1, y2:0, stop:0 #89b4fa, stop:1 #74c7ec);
        color: #1e1e2e;
    }
    QComboBox::drop-down {
        border: none;
        width: 30px;
        border-radius: 4px;
    }
    QComboBox::down-arrow {
        image: none;
        border: 5px solid transparent;
        border-top: 6px solid #cdd6f4;
        margin-right: 8px;
    }
    QFormLayout QLabel {
        font-weight: 600;
        margin-bottom: 4px;
        color: #f9e2af;
    }
    QTextEdit {
        line-height: 1.4;
    }
    /* Custom accent colors for different UI states */
    .success {
        color: #a6e3a1;
    }
    .warning {
        color: #f9e2af;
    }
    .error {
        color: #f38ba8;
    }
    .info {
        color: #89b4fa;
    }
"""

# Color constants for programmatic use
class Colors:
    """Color constants used throughout the application."""
    
    # Background colors
    BACKGROUND_MAIN = "#1e1e2e"
    BACKGROUND_WINDOW = "#181825"
    BACKGROUND_WIDGET = "#313244"
    BACKGROUND_HOVER = "#383a59"
    
    # Text colors
    TEXT_PRIMARY = "#cdd6f4"
    TEXT_SECONDARY = "#f9e2af"
    TEXT_DISABLED = "#6c7086"
    
    # Accent colors
    ACCENT_PRIMARY = "#89b4fa"
    ACCENT_SECONDARY = "#74c7ec"
    ACCENT_HOVER = "#a6c8ff"
    
    # State colors
    SUCCESS = "#a6e3a1"
    WARNING = "#f9e2af"
    ERROR = "#f38ba8"
    INFO = "#89b4fa"
    
    # Border colors
    BORDER_NORMAL = "#45475a"
    BORDER_HOVER = "#585b70"
    BORDER_FOCUS = "#89b4fa"


def apply_theme(app):
    """Apply the harmonious theme to the application."""
    app.setStyleSheet(HARMONIOUS_THEME_STYLESHEET)