/* ========================================================================
   Services page
   ======================================================================== */

/* Filter strip */
.filter-strip {
  background: var(--paper);
  border-bottom: 1px solid var(--line-soft);
  padding-block: 24px;
  position: sticky;
  top: 73px;
  z-index: 10;
  backdrop-filter: blur(20px);
}
.filter-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.filter {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 8px 14px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-muted);
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s ease;
}
.filter:hover { color: var(--navy); border-color: var(--navy); }
.filter.active {
  background: var(--navy);
  color: var(--paper);
  border-color: var(--navy);
}

/* Services list */
.services-section { background: var(--paper); padding-top: 48px; }
.services-list {
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.service-row {
  display: grid;
  grid-template-columns: 80px 1fr 40px;
  gap: 24px;
  align-items: start;
  padding: 28px 0;
  background: var(--paper);
  cursor: pointer;
  transition: background 0.2s ease, padding 0.3s ease;
  position: relative;
}
.service-row:hover { background: var(--mist); }

.service-row .sr-num {
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.12em;
  padding-top: 8px;
}
.service-row .sr-body h3 {
  font-size: clamp(20px, 2vw, 28px);
  margin-bottom: 6px;
  transition: color 0.2s ease;
}
.service-row:hover .sr-body h3 { color: var(--accent); }
.service-row .sr-body p {
  color: var(--ink-muted);
  font-size: 15px;
  max-width: 720px;
}
.service-row .sr-toggle {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 400;
  color: var(--navy);
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: all 0.3s ease;
}
.service-row.open .sr-toggle {
  transform: rotate(45deg);
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.service-row .sr-detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, margin-top 0.3s ease;
  margin-top: 0;
}
.service-row.open .sr-detail {
  max-height: 400px;
  margin-top: 20px;
}
.service-row .sr-detail ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 24px;
}
.service-row .sr-detail li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--ink);
}
.service-row .sr-detail li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-family: var(--font-mono);
}
.service-row.hidden { display: none; }

@media (max-width: 720px) {
  .service-row { grid-template-columns: 60px 1fr 32px; gap: 12px; padding: 22px 0; }
  .service-row .sr-detail ul { grid-template-columns: 1fr; }
}