app.css

/* Define CSS Variables for Themes */
:root {
    --background-color: #FFFFFF;
    --text-color: #000000;
    --success-color: #4CAF50;
    --error-color: #D32F2F;
    --card-shadow: rgba(0, 0, 0, 0.2);
}

.dark-theme {
    --background-color: #121212;
    --text-color: #FFFFFF;
    --success-color: #81C784;
    --error-color: #E57373;
    --card-shadow: rgba(255, 255, 255, 0.2);
}

/* Apply Background and Text Colors */
body {
    background-color: var(--background-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

/* Card Styles */
.card {
    box-shadow: 0 4px 8px 0 var(--card-shadow);
    transition: box-shadow 0.3s, background-color 0.3s;
    background-color: var(--background-color);
    padding: 10px;
    margin: 10px;
    border-radius: 5px;
}

.card:hover {
    box-shadow: 0 8px 16px 0 var(--card-shadow);
}

/* Toggle Switch Styles */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 10px;
}

.switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

.switch input { 
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: #2196F3;
}

input:checked + .slider:before {
    transform: translateX(26px);
}

/* Gradio Components Styling */
.gradio-container {
    background-color: var(--background-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

/* Ensure All Text Elements Use var(--text-color) */
body, p, h1, h2, h3, h4, h5, h6, span, a, label, button, input, textarea, select {
    color: var(--text-color);
    transition: color 0.3s, background-color 0.3s;
}

/* Links Styling */
a {
    color: var(--text-color);
    text-decoration: underline;
}

a:hover {
    color: var(--success-color);
}

/* Buttons Styling */
button, .gr-button {
    background-color: var(--success-color);
    color: var(--background-color);
    border: none;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
    border-radius: 4px;
    transition: background-color 0.3s, color 0.3s;
}

button:hover, .gr-button:hover {
    background-color: var(--error-color);
}

/* Inputs and Selects Styling */
input, textarea, select, .gr-textbox, .gr-dropdown, .gr-file {
    background-color: var(--background-color);
    color: var(--text-color);
    border: 1px solid var(--text-color);
    border-radius: 4px;
    padding: 8px;
    transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

/* Checkbox and Radio Buttons Styling */
input[type="checkbox"], input[type="radio"] {
    accent-color: var(--success-color);
}

/* Gradio-specific Class Overrides */
.gradio-container .gradio-block, 
.gradio-container .gradio-row, 
.gradio-container .gradio-column {
    background-color: var(--background-color);
    color: var(--text-color);
}

/* Ensure Gradio Tabs Respect the Theme */
.gradio-container .tab-title {
    color: var(--text-color);
}

.gradio-container .tab-title.selected {
    border-bottom: 2px solid var(--success-color);
}

/* Additional Styling for HTML Components within Gradio */
.gradio-container .markdown p,
.gradio-container .markdown h1,
.gradio-container .markdown h2,
.gradio-container .markdown h3,
.gradio-container .markdown h4,
.gradio-container .markdown h5,
.gradio-container .markdown h6 {
    color: var(--text-color);
}

.gradio-container .html-content a {
    color: var(--text-color);
}

.gradio-container .html-content a:hover {
    color: var(--success-color);
}