:root {
    /* Default theme colors (Theme 1) */
    --primary-color: #8A2BE2;   /* Intense Purple */
    --secondary-color: #FF7F50; /* Intense Orange */
    --text-color: #333;
    --background-color: #f4f4f4;
}

body {
    font-family: Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
}

h1, h2, h3, h4, h5, h6 {
    color: var(--primary-color);
}

.title {
    color: var(--secondary-color);
}

/* Other common styles for navigation, buttons, etc. */
.menu-item a {
    color: var(--primary-color);
}

.menu-item a:hover {
    color: var(--secondary-color);
}

/* Add this to the end of your file */
.sticky-top {
    position: sticky;
    top: 0;
    z-index: 1020; /* Higher than Bootstrap's default z-index */
}

.card-body img {
    max-width: 100%;
    height: auto;
}

.nav-link.active {
    background-color: rgba(255, 255, 255, 0.1); /* A subtle background highlight */
    border-bottom: 2px solid #fff; /* A colored border */
    font-weight: bold; /* Make the text stand out */
}