/* ── 11 · ALUMNI BAND ──
   The band of past members under the roster.

   Part of the numbered set in css/ — the sheets are one stylesheet cut into
   pieces and index.html links them in this order. Order is the cascade: a
   rule here loses to the same-specificity rule in any later file. */

/* ── Alumni band ─────────────────────────────────────────────── */

.alumni-band {
    position: relative;
    z-index: 1;
    margin-top: 0;
    isolation: isolate;
}

.alumni-band::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: -100vw;
    right: -100vw;
    /* Closes the ladder with the section colour rather than another grey. */
    background: color-mix(in srgb, var(--section-people) 16%, transparent);
    z-index: -1;
    pointer-events: none;
}

/* ── Opening ──
   The panel is the box that moves: clipped, and its height written in pixels
   by people.js on every press, then handed back to `auto` once it arrives. The
   grid inside it does the fade, so nothing here competes with `.alumni-card`'s
   own hover transform — a reveal written onto the cards would have to outrank
   `:hover` and would lose to it on the way past. */
.alumni-band__panel {
    height: 0;
    overflow: hidden;
    transition: height 0.36s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.alumni-band__grid {
    opacity: 0;
    /* Slides down out from under the trigger rather than appearing at rest. */
    transform: translateY(-10px);
    transition:
        opacity 0.28s ease 0.05s,
        transform 0.36s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.alumni-band__panel.is-open .alumni-band__grid {
    opacity: 1;
    transform: none;
}

.alumni-band__trigger {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.7em;
    width: 100%;
    padding: 0.85em clamp(0.75rem, 3vw, 2.5rem);
    background: transparent;
    border: none;
    border-top: 1px solid color-mix(in srgb, var(--section-people) 25%, transparent);
    border-bottom: 1px solid color-mix(in srgb, var(--section-people) 25%, transparent);
    cursor: pointer;
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: color-mix(in srgb, var(--section-people) 70%, transparent);
    transition:
        background 0.18s ease,
        color 0.18s ease;
}

.alumni-band__trigger:hover,
.alumni-band__trigger.is-open {
    background: color-mix(in srgb, var(--section-people) 8%, transparent);
    color: var(--section-people);
}

.alumni-band__count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.5em;
    height: 1.5em;
    padding: 0 0.35em;
    border-radius: 999px;
    background: color-mix(in srgb, var(--section-people) 18%, transparent);
    font-size: 0.9em;
    font-weight: 600;
    letter-spacing: 0;
}

.alumni-band__chevron {
    display: inline-block;
    width: 0.55em;
    height: 0.55em;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg) translateY(-2px);
    transition: transform 0.22s ease;
    flex-shrink: 0;
}

.alumni-band__trigger.is-open .alumni-band__chevron {
    transform: rotate(-135deg) translateY(-2px);
}

.alumni-band__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(112px, 1fr));
    justify-items: center;
    gap: 1.4rem clamp(0.9rem, 2vw, 1.2rem);
    padding: 1.75rem clamp(0.75rem, 3vw, 2.5rem) 2rem;
}

.alumni-card {
    display: grid;
    justify-items: center;
    align-content: start;
    gap: 0.65rem;
    width: min(170px, 100%);
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.25rem 0.35rem 0.45rem;
    border-radius: 0;
    transition:
        transform 0.15s ease,
        opacity 0.15s ease;
}

.alumni-card:hover,
.alumni-card:focus-visible {
    transform: translateY(-2px);
    outline: none;
}

.alumni-card__avatar {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    object-fit: cover;
    background: rgba(17, 17, 17, 0.06);
    border: 0;
    display: block;
    /* Fully desaturated at rest; the colour returns on hover, which is the
       only place it appears in this band. */
    filter: grayscale(100%);
    box-shadow: 0 10px 22px rgba(17, 17, 17, 0.08);
    transition:
        filter 0.16s ease,
        transform 0.16s ease,
        box-shadow 0.16s ease;
}

.alumni-card:hover .alumni-card__avatar,
.alumni-card:focus-visible .alumni-card__avatar {
    filter: grayscale(0%);
    transform: scale(1.03);
    box-shadow: 0 16px 28px rgba(17, 17, 17, 0.14);
}

.alumni-card__name {
    font-family: Georgia, "Times New Roman", serif;
    font-size: 0.98rem;
    font-weight: 400;
    font-style: italic;
    color: #5a5a5a;
    text-align: center;
    line-height: 1.25;
    overflow-wrap: anywhere;
}

.alumni-card__details {
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    max-width: 13rem;
    min-height: 2.3rem;
    margin: 0;
    font-size: 0.72rem;
    color: #7b7883;
    text-align: center;
    line-height: 1.45;
    opacity: 0;
    transform: translateY(-4px);
    transition:
        opacity 0.16s ease,
        transform 0.16s ease;
    pointer-events: none;
}

.alumni-card:hover .alumni-card__details,
.alumni-card:focus-visible .alumni-card__details {
    opacity: 1;
    transform: translateY(0);
}

/* The band still opens; it just arrives. people.js takes the same branch and
   writes `auto` / `0` straight out, so nothing waits on a transitionend that
   is never going to fire. */
@media (prefers-reduced-motion: reduce) {
    .alumni-band__panel,
    .alumni-band__grid,
    .alumni-band__chevron {
        transition: none;
    }

    .alumni-band__grid {
        opacity: 1;
        transform: none;
    }
}

/* ── End alumni band ─────────────────────────────────────────── */