/* Dark and Light theme variables */
:root {
    --bg-color-dark: #212529;
    --text-color-dark: #f8f9fa;
    --card-bg-dark: #343a40;
    --border-color-dark: #495057;
    --link-color-dark: #6ea8fe;
    --header-color-dark: #4a525a;

    --bg-color-light: #f8f9fa;
    --text-color-light: #212529;
    --card-bg-light: #ffffff;
    --border-color-light: #dee2e6;
    --link-color-light: #007bff;
    --header-color-light: #e9ecef;
}

[data-bs-theme="dark"] {
    --bs-body-bg: var(--bg-color-dark);
    --bs-body-color: var(--text-color-dark);
    --bs-link-color: var(--link-color-dark);
    --bs-card-bg: var(--card-bg-dark);
    --bs-card-border-color: var(--border-color-dark);
    --bs-accordion-bg: var(--card-bg-dark);
    --bs-accordion-color: var(--text-color-dark);
    --bs-accordion-border-color: var(--border-color-dark);
    --bs-accordion-button-color: var(--text-color-dark);
    --bs-accordion-button-active-bg: var(--header-color-dark);
    --bs-accordion-button-active-color: var(--text-color-dark);
    --bs-accordion-button-focus-border-color: var(--link-color-dark);
    --bs-accordion-button-focus-box-shadow: 0 0 0 0.25rem rgba(110, 168, 254, 0.25);
}

[data-bs-theme="light"] {
    --bs-body-bg: var(--bg-color-light);
    --bs-body-color: var(--text-color-light);
    --bs-link-color: var(--link-color-light);
    --bs-card-bg: var(--card-bg-light);
    --bs-card-border-color: var(--border-color-light);
    --bs-accordion-bg: var(--card-bg-light);
    --bs-accordion-color: var(--text-color-light);
    --bs-accordion-border-color: var(--border-color-light);
    --bs-accordion-button-color: var(--text-color-light);
    --bs-accordion-button-active-bg: var(--header-color-light);
    --bs-accordion-button-active-color: var(--text-color-light);
    --bs-accordion-button-focus-border-color: var(--link-color-light);
    --bs-accordion-button-focus-box-shadow: 0 0 0 0.25rem rgba(0, 123, 255, 0.25);
}

body {
    transition: background-color 0.3s, color 0.3s;
}

.card, .accordion-item {
    transition: background-color 0.3s, border-color 0.3s;
}

/* Carousel Description Styles */
.carousel-description {
    display: none;
}

.carousel-description.active {
    display: block;
}

/* Carousel Thumbnail Styles */
.carousel-thumbnail-nav {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 1rem;
}

.carousel-thumbnail {
    width: 100px;
    height: 75px;
    object-fit: cover;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity .2s ease-in-out;
    border: 3px solid transparent;
    border-radius: .25rem;
}

.carousel-thumbnail:hover {
    opacity: 1;
}

.carousel-thumbnail.active {
    opacity: 1;
    border-color: var(--bs-primary);
}

/* Carousel sizing to prevent page jump */
.carousel-item {
    height: 60vh; /* Use viewport height for responsiveness */
    background-color: #000; /* Black background for letterboxing */
}

.carousel-item img {
    height: 100%;
    width: 100%;
    object-fit: contain; /* Scale image to fit within the container, preserving aspect ratio */
}