:root {
    --primary-color: #0d6efd; /* Bootstrap 5 primary */
    --text-color: #212529;    /* Bootstrap 5 body color */
    --background-color: #f8f9fa;
    --border-color: #dee2e6;
    --shadow-color: rgba(0, 0, 0, 0.05);
    --header-color: #212529;
}

body {
    font-family: 'Inter', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    margin: 0;
    padding: 2rem 0;
    background-color: var(--background-color);
    color: var(--text-color);
    min-height: 100vh;
    background-image: url('https://iiif.museologi.st/iiif/3/dragon.jpg/full/max/0/default.jpg');
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.container,
.container-lg,
.container-md,
.container-sm,
.container-xl,
.container-xxl {
    background-color: #fff;
    border-radius: 0.5rem;
    box-shadow: 0 4px 12px var(--shadow-color);
    padding: 2.5rem 3rem;
    border: 1px solid var(--border-color);
    margin: 0 1rem;
}

header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

h1,
.h1 {
    font-size: 2.2rem;
    color: var(--header-color);
    margin-bottom: 0.5rem;
    font-weight: 600;
    text-align: center;
}

.file-list,
.list-unstyled {
    list-style: none;
    padding: 0;
    margin: 0;
}

.file-list li,
.list-unstyled li {
    margin-bottom: 0.75rem;
    padding: 0.75rem 0;
    border-bottom: 1px dashed var(--border-color);
}

.file-list li:last-child,
.list-unstyled li:last-child {
    border-bottom: none;
}

.empty-state,
.text-muted {
    text-align: center;
    font-style: italic;
    color: #6c757d;
    padding: 2rem 0;
}

footer,
.footer {
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: #6c757d;
    font-size: 0.9rem;
}

body {
    font-family: 'Inter', Arial, sans-serif;
}

.file-list li {
    margin-bottom: 0.5rem;
}

.footer-classy {
    background: #f8f9fa;
    border-top: 1px solid #e9ecef;
    padding: 2rem 0 1rem 0;
    text-align: center;
    font-size: 1rem;
}

.footer-classy a {
    color: #24292f;
    text-decoration: none;
    margin-left: 0.5em;
    transition: color 0.2s;
}

.footer-classy a:hover {
    color: #0366d6;
    text-decoration: underline;
}

.footer-classy .fa-github {
    font-size: 1.3em;
    vertical-align: middle;
}

.manifest-btn {
    display: inline-block;
    margin-bottom: 1.5rem;
}