/* ── Ping page — contact accordion, black + light blue ── */
body {
  background: #000;
  color: #5BC8F5;
}

header {
  background: #000;
}

.header-center a,
.ping-btn {
  color: #5BC8F5;
}

.header-center a:hover,
.ping-btn:hover {
  color: #5BC8F5;
}

/* ── Main layout — vertically centered ── */
#ping-main {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

#contact-list {
  width: min(560px, calc(100% - 80px));
}

/* ── Contact rows ── */
.contact-row {
  border-top: 1px solid #5BC8F5;
  cursor: pointer;
}

.contact-row:last-child {
  border-bottom: 1px solid #5BC8F5;
}

.row-header {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 0;
  user-select: none;
}

.row-plus {
  font-family: 'Raleway', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: clamp(20px, 2.5vw, 32px);
  font-weight: 300;
  color: #5BC8F5;
  display: inline-block;
  line-height: 1;
  transition: transform 0.3s ease;
  width: 1em;
  text-align: center;
}

.contact-row.open .row-plus {
  transform: rotate(45deg);
}

.row-label {
  font-family: 'Raleway', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: clamp(20px, 2.5vw, 32px);
  font-weight: 500;
  letter-spacing: 0.08em;
  color: #5BC8F5;
}

/* ── Expandable detail ── */
.row-detail {
  overflow: hidden;
  max-height: 0;
  padding: 0 0 0 44px;
  transition: max-height 0.35s ease, padding 0.35s ease;
}

.contact-row.open .row-detail {
  max-height: 80px;
  padding: 0 0 20px 44px;
}

.row-detail span,
.row-detail a {
  font-family: 'Ubuntu', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: clamp(14px, 1.8vw, 24px);
  font-weight: 300;
  color: #5BC8F5;
  letter-spacing: 0.04em;
}

.row-detail a {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.row-detail a:hover {
  opacity: 0.75;
}