/* Shared styling for the full help pages (walkthrough, Atlas, research,
 * DICOM, getting started and the exam-bank help pages).
 *
 * Page-specific templates add `.help-page` to their wrapper and reuse the
 * `.help-hero`, `.help-toc`, `.help-section` and `.help-card` classes. Keeping
 * the styling here means the pages cannot drift apart.
 */

.help-page {
    --help-accent-rgb: var(--bs-primary-rgb);
}

.help-page .help-hero {
    position: relative;
    overflow: hidden;
    padding: 2rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--bs-border-color);
    border-radius: 1rem;
    background:
        radial-gradient(circle at 100% 0%, rgba(var(--help-accent-rgb), 0.18), transparent 55%),
        linear-gradient(135deg, rgba(var(--help-accent-rgb), 0.10), rgba(var(--bs-body-color-rgb), 0.02));
}

.help-page .help-hero h1 {
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: .5rem;
}

.help-page .help-hero .help-hero-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    margin-bottom: .75rem;
    border-radius: .85rem;
    color: var(--bs-primary);
    background: rgba(var(--help-accent-rgb), .16);
    font-size: 1.35rem;
}

.help-page .help-hero p:last-child {
    margin-bottom: 0;
}

.help-page .help-toc {
    position: sticky;
    top: 1rem;
    border-color: var(--bs-border-color);
    box-shadow: 0 .5rem 1.5rem rgba(0, 0, 0, .12);
}

.help-page .help-toc .nav-link {
    padding: .3rem .55rem;
    margin-bottom: .1rem;
    border-left: 2px solid transparent;
    border-radius: .35rem;
    color: var(--bs-secondary-color);
    font-size: .92rem;
}

.help-page .help-toc .nav-link:hover,
.help-page .help-toc .nav-link:focus,
.help-page .help-toc .nav-link.active {
    color: var(--bs-body-color);
    background: rgba(var(--help-accent-rgb), .12);
    border-left-color: var(--bs-primary);
}

.help-page .help-toc-group {
    margin: .85rem 0 .25rem;
    color: var(--bs-secondary-color);
    font-size: .72rem;
    font-weight: 600;
    letter-spacing: .05em;
    text-transform: uppercase;
}

.help-page .help-section {
    scroll-margin-top: 5rem;
}

.help-page .help-section > h2 {
    margin-bottom: 1rem;
    padding-bottom: .5rem;
    border-bottom: 1px solid var(--bs-border-color);
    font-size: 1.45rem;
    font-weight: 650;
    letter-spacing: -0.01em;
}

.help-page .help-section h3,
.help-page .help-section h5 {
    margin-top: 1.5rem;
    font-weight: 600;
}

.help-page .help-section p,
.help-page .help-section li {
    line-height: 1.65;
}

.help-page .help-section ul,
.help-page .help-section ol {
    padding-left: 1.25rem;
}

.help-page .help-section li + li {
    margin-top: .35rem;
}

.help-page .help-card {
    height: 100%;
    border: 1px solid var(--bs-border-color);
    border-radius: .85rem;
    background: rgba(var(--bs-body-color-rgb), .02);
}

.help-page .help-card:hover {
    border-color: rgba(var(--help-accent-rgb), .45);
}

.help-page .help-audience {
    height: 100%;
    transition: border-color .15s ease-in-out, transform .15s ease-in-out;
}

.help-page .help-audience:hover {
    border-color: rgba(var(--help-accent-rgb), .55);
    transform: translateY(-1px);
}

.help-page .help-audience-links a {
    display: inline-block;
    margin: 0 .5rem .4rem 0;
    font-size: .875rem;
}

.help-page .help-menu-table th {
    white-space: nowrap;
}

.help-page .help-menu-table td,
.help-page .help-menu-table th {
    vertical-align: top;
}

.help-page .help-step {
    counter-reset: help-step;
    list-style: none;
    padding-left: 0;
}

.help-page .help-step > li {
    position: relative;
    padding-left: 2.25rem;
    margin-bottom: .75rem;
}

.help-page .help-step > li::before {
    counter-increment: help-step;
    content: counter(help-step);
    position: absolute;
    left: 0;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.6rem;
    height: 1.6rem;
    border-radius: 50%;
    background: var(--bs-primary);
    color: #fff;
    font-size: .85rem;
    font-weight: 600;
}

.help-page .help-back-top {
    position: fixed;
    right: 1.25rem;
    bottom: 1.25rem;
    z-index: 30;
    display: none;
    padding: .45rem .7rem;
    border: 1px solid var(--bs-border-color);
    border-radius: .5rem;
    background: var(--bs-body-bg);
    color: var(--bs-body-color);
    box-shadow: 0 .35rem 1rem rgba(0, 0, 0, .25);
    font-size: .85rem;
    text-decoration: none;
}

.help-page .help-back-top.is-visible {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
}

.help-page .help-back-top:hover {
    color: var(--bs-primary);
    border-color: var(--bs-primary);
}

.help-page .help-section .alert {
    border-radius: .75rem;
}

.help-page .help-section code {
    padding: .1rem .3rem;
    border-radius: .25rem;
    background: rgba(var(--bs-body-color-rgb), .08);
}

@media (max-width: 991.98px) {
    .help-page .help-toc {
        position: static;
        margin-bottom: 1rem;
    }

    .help-page .help-hero {
        padding: 1.25rem;
    }
}

@media print {
    .help-page .help-toc,
    .help-page .help-back-top {
        display: none !important;
    }

    .help-page .help-section {
        break-inside: avoid;
    }
}