.expander-header {
    cursor: pointer;
    background-color: #f5f5f5;
    padding: 10px;
    display: flex;
    justify-content: space-between; /* Align items to the edges */
    align-items: center; /* Center items vertically */
}

.expander-header h3 {
    margin-bottom: 0;
    margin-left: 0 !important;
    margin-right: 0 !important;
    font-size: 1.5em;
    font-weight: 700;
}

.sr-only {
    position: absolute;
    left: -10000px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.hidden,
.wp-block-expander .content-hidden {
    display: none;
}

.wp-block-expander {
    margin: 1rem auto;
    max-width: 1200px;
    border: 0.125rem solid #eeefef;
}

.wp-block-expander .alignfull {
    margin: 1rem 0;
    max-width: 100%;
}

.wp-block-expander .top-section-wrapper {
    display: flex;
}
.wp-block-expander .top-section-wrapper .expander-title {
    margin: 0;
    flex: 1;
}
@media screen and (max-width: 320px) {
    .wp-block-expander .top-section-wrapper .expander-title {
        font-size: 16px;
    }
}
.wp-block-expander .top-section-wrapper .title-wrapper {
    flex: 1;
    padding: 0 1rem 0 0;
    align-items: center;
    display: flex;
    pointer-events: none;
}
@media screen and (max-width: 321px) {
    .wp-block-expander .top-section-wrapper .title-wrapper {
        display: block;
    }
}
.wp-block-expander .top-section-wrapper .expander-expand {
    background-color: #eeefef;
    cursor: pointer;
    padding: 0;
    border: none;
    display: flex;
    align-items: center;
    width: 100%;
    padding: 0.75rem 1rem;
}
.wp-block-expander .top-section-wrapper .expander-expand::before {
    content: "";
    display: block;
    width: 0rem;
    height: 0rem;
    border-top-width: 0.5rem;
    border-left-width: 0.5rem;
    border-right-width: 0.5rem;
    border-bottom-width: 0.5rem;
    border-style: solid;
    border-top-color: transparent;
    border-left-color: #000;
    border-right-color: transparent;
    border-bottom-color: transparent;
    margin-right: 0.25rem;
}
.wp-block-expander
    .top-section-wrapper
    .expander-expand[aria-expanded="true"]::before {
    border-top-width: 0.5rem;
    border-left-width: 0.5rem;
    border-right-width: 0.5rem;
    border-bottom-width: 0.5rem;
    border-style: solid;
    border-top-color: #000;
    border-left-color: transparent;
    border-right-color: transparent;
    border-bottom-color: transparent;
    position: relative;
    top: 0.25rem;
    left: -0.25rem;
}

.wp-block-expander .content-wrapper {
    padding: 1rem;
    display: block;
    background: #fff;
}
.wp-block-expander .content-wrapper :first-child {
    margin-top: 0;
}
.wp-block-expander .content-wrapper *:last-child {
    margin-bottom: 0;
}
.wp-block-expander
    .content-wrapper
    .wp-block-media-text.is-stacked-on-mobile
    .wp-block-media-text__content {
    margin-top: 1rem;
}

.wp-block-expander .content-wrapper.content-hidden {
    display: none;
}

.editor-styles-wrapper .top-section-wrapper .title-wrapper {
    padding: 0 1rem 0 0;
}
.editor-styles-wrapper
    .top-section-wrapper
    .title-wrapper
    .components-toggle-control__label {
    margin-top: 0.5rem;
}
.editor-styles-wrapper .wp-block-expander {
    margin: 1rem 0;
    border: 1px solid #767676;
}
.editor-styles-wrapper .wp-block-expander .title-wrapper {
    pointer-events: auto;
    display: flex;
}
.editor-styles-wrapper .wp-block-expander .content-wrapper {
    display: block;
}

.wp-block-expander .top-section-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.wp-block-expander .toggle-indicator {
    font-size: 1.5rem;
    line-height: 1;
    margin-left: 10px;
}

.wp-block-expander .content-wrapper {
    display: none;
}

.wp-block-expander.open .content-wrapper {
    display: block;
}

/* Dark mode: expander blends fully into the dark page canvas (#1a1a1a).
   The header sits slightly raised so it stays distinguishable, and any
   nested cards (e.g. the checklist block) appear lighter, reading as
   their own containers against this dark surface. */
[data-theme="dark"] .wp-block-expander {
    border-color: var(--umbc-border, #3d3d3d);
}

[data-theme="dark"] .wp-block-expander .top-section-wrapper .expander-expand {
    background-color: var(--umbc-surface-card-alt, #232323);
    color: #e0e0e0;
}

[data-theme="dark"] .wp-block-expander .top-section-wrapper .expander-expand::before {
    border-left-color: #e0e0e0;
}

[data-theme="dark"] .wp-block-expander .top-section-wrapper .expander-expand[aria-expanded="true"]::before {
    border-top-color: #e0e0e0;
    border-left-color: transparent;
}

[data-theme="dark"] .wp-block-expander .expander-title,
[data-theme="dark"] .wp-block-expander .expander-title * {
    color: #e0e0e0;
}

[data-theme="dark"] .wp-block-expander .content-wrapper {
    background: #1a1a1a;
    color: #e0e0e0;
}

[data-theme="dark"] .wp-block-expander .content-wrapper :is(p, li, h1, h2, h3, h4, h5, h6, dt, dd) {
    color: #e0e0e0;
}

[data-theme="dark"] .entry-content .wp-block-expander .content-wrapper a:not([class*="wp-block-button"]) {
    color: #4db6bb;
}

[data-theme="dark"] .entry-content .wp-block-expander .content-wrapper a:not([class*="wp-block-button"]):hover {
    color: #6fc9cd;
}