/* ── Participate page ("Ich möchte teilnehmen") ──
   Accordion list of study sites. Loaded only by layouts/participate/list.html. */

/* The theme pins <body> to a fixed viewport height, which clips pages that grow
   past 100vh — and this page grows every time an accordion opens. Same fix as
   the inline one in layouts/topics/list.html. */
body { height: auto !important; min-height: 100vh !important; }

.participate-page {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 0 4rem;
}

/* Header */
.participate-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.9rem;
}
.participate-intro {
    font-size: 1.05rem;
    line-height: 1.7;
    color: #444;
    margin-bottom: 2.25rem;
    max-width: 60ch;
}
html.dark .participate-intro { color: #bbb; }

/* ── Accordion ── */
.participate-sites {
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
}

.site-acc {
    border: 1px solid rgba(5, 102, 46, 0.25);
    border-left: 4px solid #0a8f37;
    border-radius: 8px;
    background: #fff;
    overflow: hidden;
    transition: box-shadow 0.18s ease, border-color 0.18s ease;
}
.site-acc:hover { box-shadow: 0 2px 10px rgba(0, 0, 0, 0.07); }
.site-acc[open] {
    border-color: rgba(5, 102, 46, 0.45);
    box-shadow: 0 3px 14px rgba(0, 0, 0, 0.08);
}
html.dark .site-acc {
    background: #222;
    border-color: rgba(10, 143, 55, 0.35);
    border-left-color: #0a8f37;
}
html.dark .site-acc[open] { border-color: rgba(10, 143, 55, 0.6); }

/* Summary row */
.site-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.15rem 1.4rem;
    cursor: pointer;
    list-style: none;
    user-select: none;
}
.site-summary::-webkit-details-marker { display: none; }
.site-summary:focus-visible {
    outline: 2px solid #0a8f37;
    outline-offset: -2px;
}

.site-summary-text { display: flex; flex-direction: column; gap: 0.15rem; }
.site-city {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: #05662e;
}
html.dark .site-city { color: #4cc47a; }
.site-inst { font-size: 0.95rem; font-weight: 600; color: #333; }
html.dark .site-inst { color: #ddd; }
.site-teaser { font-size: 0.9rem; color: #666; line-height: 1.45; }
html.dark .site-teaser { color: #aaa; }

/* Chevron */
.site-chevron {
    flex: 0 0 auto;
    width: 11px;
    height: 11px;
    border-right: 2px solid #0a8f37;
    border-bottom: 2px solid #0a8f37;
    transform: rotate(45deg);
    transition: transform 0.2s ease;
    margin-right: 0.35rem;
}
.site-acc[open] .site-chevron { transform: rotate(-135deg); }

/* ── Panel body ── */
.site-body {
    padding: 0.25rem 1.4rem 1.6rem;
    border-top: 1px solid rgba(0, 0, 0, 0.07);
    margin-top: 0.1rem;
}
html.dark .site-body { border-top-color: rgba(255, 255, 255, 0.09); }

.site-dept {
    font-size: 0.9rem;
    color: #666;
    margin: 1rem 0 0.75rem;
}
html.dark .site-dept { color: #aaa; }

.site-intro {
    font-size: 1rem;
    line-height: 1.7;
    color: #444;
    margin-bottom: 1.5rem;
}
html.dark .site-intro { color: #bbb; }

.site-block { margin-bottom: 1.35rem; }
.site-block-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.45rem;
    color: #1a1a1a;
}
html.dark .site-block-title { color: #e8e8e8; }
.site-block p {
    font-size: 0.97rem;
    line-height: 1.7;
    color: #444;
}
html.dark .site-block p { color: #bbb; }

.site-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.site-list li {
    position: relative;
    padding-left: 1.1rem;
    font-size: 0.97rem;
    line-height: 1.65;
    color: #444;
    margin-bottom: 0.28rem;
}
.site-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.62em;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: #0a8f37;
}
html.dark .site-list li { color: #bbb; }

/* Contact card */
.site-contact {
    background: rgba(5, 102, 46, 0.05);
    border-radius: 6px;
    padding: 1rem 1.1rem;
    margin: 1.5rem 0 1.25rem;
}
html.dark .site-contact { background: rgba(10, 143, 55, 0.1); }
.site-contact-lead,
.site-contact-line {
    font-size: 0.94rem;
    line-height: 1.6;
    color: #444;
}
html.dark .site-contact-lead,
html.dark .site-contact-line { color: #bbb; }

/* One block per named contact — a site may list several (Aachen has separate
   contacts for Viersen and Düren). Each line is optional, so a block can be
   just a name and an e-mail address. */
.site-contact-person {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    margin-top: 0.85rem;
}
.site-contact-role {
    font-size: 0.85rem;
    color: #666;
}
html.dark .site-contact-role { color: #999; }
.site-contact-name {
    font-size: 0.94rem;
    font-weight: 600;
    color: #444;
}
html.dark .site-contact-name { color: #ddd; }

.site-contact-line a,
.site-contact-link {
    align-self: flex-start;
    font-size: 0.94rem;
    line-height: 1.6;
    color: #05662e;
    text-decoration: none;
    border-bottom: 1px solid rgba(5, 102, 46, 0.35);
}
.site-contact-line a:hover,
.site-contact-link:hover { border-bottom-color: #05662e; }
html.dark .site-contact-line a,
html.dark .site-contact-link {
    color: #4cc47a;
    border-bottom-color: rgba(76, 196, 122, 0.4);
}

/* PDF download button */
.site-actions { margin-top: 1.25rem; }
.site-pdf-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.65rem 1.15rem;
    border-radius: 6px;
    background: #0a8f37;
    color: #fff;
    font-size: 0.94rem;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.18s ease;
}
.site-pdf-btn:hover { background: #05662e; }
.site-pdf-btn:focus-visible {
    outline: 2px solid #05662e;
    outline-offset: 2px;
}
.site-pdf-icon { width: 17px; height: 17px; }

/* Footnotes */
.participate-note {
    margin-top: 1.75rem;
    font-size: 0.88rem;
    color: #777;
}
html.dark .participate-note { color: #999; }

.participate-outro {
    margin-top: 1.5rem;
    font-size: 1rem;
    line-height: 1.7;
    color: #444;
}
html.dark .participate-outro { color: #bbb; }

/* ── Mobile ── */
@media (max-width: 640px) {
    .site-summary { padding: 1rem 1.1rem; }
    .site-body { padding: 0.25rem 1.1rem 1.4rem; }
    .site-city { font-size: 1.15rem; }
}
