.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.event-sidebar {
    background: var(--color-white);
    border-right: 1px solid var(--color-sea-foam);
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    height: 100vh;
    position: sticky;
    top: 0;
    box-sizing: border-box;
    transition:
        width 180ms ease,
        padding 180ms ease;
    color: var(--color-black);
}

.event-sidebar__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.event-sidebar__brand {
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-size: 0.8rem;
    line-height: 1.2;
    color: inherit;
}

.event-sidebar__brand-link {
    text-decoration: none;
    color: inherit;
    display: inline-block;
}

.event-sidebar__brand-link:hover,
.event-sidebar__brand-link:focus {
    text-decoration: none;
}

.event-sidebar__brand-top,
.event-sidebar__brand-bottom {
    display: block;
    letter-spacing: 0.1em;
}

.event-sidebar__brand-bottom {
    letter-spacing: 0.1em;
}

.event-sidebar__context-label {
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    color: var(--color-brown);
}

.event-sidebar__event-name {
    margin: 0.5rem 0 0;
    font-size: 1.6rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-dark-brown);
    line-height: 2rem;
}

.event-sidebar__event-link {
    color: inherit;
    text-decoration: none;
}

.event-sidebar__event-link:hover,
.event-sidebar__event-link:focus {
    text-decoration: underline;
}

.event-sidebar__nav > ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 0.3rem;
}

.event-sidebar__sections {
    gap: 0.65rem;
}

.event-sidebar__section {
    display: grid;
    gap: 0.35rem;
}

.event-sidebar__link-label {
    display: inline-block;
}

.event-sidebar__nav--secondary {
    margin-top: auto;
}

.event-sidebar__link,
.event-sidebar__subnav-link {
    text-decoration: none;
    color: var(--color-black);
    font-size: 0.95rem;
    display: inline-block;
    transition: color 120ms ease, background-color 120ms ease;
}

.event-sidebar__link:hover,
.event-sidebar__link:focus,
.event-sidebar__subnav-link:hover,
.event-sidebar__subnav-link:focus {
    text-decoration: underline;
}

.event-sidebar__link--stub {
    opacity: 0.6;
}

.event-sidebar__link--active {
    font-weight: var(--font-weight-semibold);
    color: var(--color-gold);
}

.event-sidebar__subnav {
    list-style: none;
    margin: 0;
    padding: 0 0 0 0.65rem;
    display: grid;
    gap: 0.35rem;
}

.event-sidebar__subnav-link {
    font-size: 0.9rem;
}

.event-sidebar__subnav-link--stub {
    opacity: 0.6;
}

.event-sidebar__subnav-link--active {
    font-weight: var(--font-weight-semibold);
    color: var(--color-gold);
}

.event-sidebar__toggle {
    background: none;
    border: 1px solid var(--color-sea-foam);
    border-radius: var(--radius-pill);
    padding: 0.35rem 0.85rem;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-dark-brown);
    cursor: pointer;
}

.event-sidebar__toggle:hover,
.event-sidebar__toggle:focus {
    background: color-mix(in srgb, var(--color-sea-foam) 12%, white);
}

.event-sidebar__toggle-label {
    display: inline-block;
}

.event-sidebar__footer {
    margin-top: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.6rem;
    flex-wrap: wrap;
    font-size: 0.9rem;
}

.event-sidebar__footer form {
    margin: 0;
}

.event-sidebar__footer-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-sea-foam);
    border-radius: var(--radius-pill);
    padding: 0.35rem 1rem;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    background: transparent;
    color: var(--color-dark-brown);
    cursor: pointer;
    text-decoration: none;
}

.event-sidebar__footer-button:hover,
.event-sidebar__footer-button:focus {
    background: color-mix(in srgb, var(--color-sea-foam) 12%, white);
}

.event-sidebar__section--active > .event-sidebar__link {
    text-decoration: none;
}

.event-sidebar--collapsed {
    width: 5rem;
    padding: 2rem 1rem;
}

.event-sidebar--collapsed .event-sidebar__context,
.event-sidebar--collapsed .event-sidebar__subnav {
    display: none;
}

.event-sidebar--collapsed .event-sidebar__link-label,
.event-sidebar--collapsed .event-sidebar__toggle-label {
    position: absolute;
    clip: rect(0, 0, 0, 0);
    height: 1px;
    width: 1px;
    overflow: hidden;
}

.event-sidebar--collapsed .event-sidebar__link,
.event-sidebar--collapsed .event-sidebar__subnav-link,
.event-sidebar--collapsed .event-sidebar__toggle {
    width: 100%;
    text-align: center;
    min-height: 2.25rem;
    display: grid;
    place-items: center;
}

.event-sidebar--collapsed .event-sidebar__link::before,
.event-sidebar--collapsed .event-sidebar__subnav-link::before {
    content: "";
    width: 0.45rem;
    height: 0.45rem;
    border-radius: 50%;
    background: var(--color-dark-brown);
    display: block;
}

.event-sidebar--collapsed .event-sidebar__toggle {
    border: none;
}

.event-sidebar--collapsed .event-sidebar__toggle::before {
    content: "";
    border-style: solid;
    border-width: 0.35rem 0 0.35rem 0.5rem;
    border-color: transparent transparent transparent var(--color-dark-brown);
    display: inline-block;
    transform: rotate(0deg);
}

.event-sidebar--collapsed .event-sidebar__brand {
    text-align: center;
}

.event-sidebar--collapsed .event-sidebar__brand-link {
    display: block;
}

.event-sidebar--collapsed .event-sidebar__footer {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
}

.event-sidebar--collapsed .event-sidebar__footer-button {
    width: 100%;
    text-align: center;
}

@media (max-width: 700px) {
    .event-sidebar {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 1rem 2rem;
        height: auto;
        position: static;
    }

    .event-sidebar__nav,
    .event-sidebar__nav--secondary {
        flex: 1 1 100%;
    }
}