:root {
  --rel-bg-0: #0f1620;
  --rel-bg-1: #182a3c;
  --rel-bg-2: #21425a;
  --rel-text: #f4eee3;
  --rel-soft: rgba(244, 238, 227, 0.82);
  --rel-line: rgba(172, 214, 248, 0.4);
  --rel-ally: #44d4a1;
  --rel-rival: #f08282;
  --rel-family: #f8c37a;
}

.relations-page {
  margin: 0;
  color: var(--rel-text);
  background:
    radial-gradient(circle at 12% 8%, rgba(68, 212, 161, 0.2), transparent 28%),
    radial-gradient(circle at 88% 0%, rgba(248, 195, 122, 0.18), transparent 24%),
    linear-gradient(155deg, var(--rel-bg-0) 0%, var(--rel-bg-1) 46%, var(--rel-bg-2) 100%);
  background-attachment: fixed;
  font-family: Cambria, "Palatino Linotype", "Book Antiqua", serif;
}

.relations-page .container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1rem 2.7rem;
}

.relations-page .page-topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  margin: 0 -1rem;
  padding: 0.8rem 1rem;
  border-bottom: 1px solid rgba(248, 195, 122, 0.25);
  background: rgba(13, 26, 37, 0.66);
  backdrop-filter: blur(8px);
}

.relations-hero h1 {
  margin: 0.8rem 0 0.9rem;
  font-size: clamp(1.8rem, 4.2vw, 3rem);
  max-width: 22ch;
  line-height: 1.08;
  color: #fff5e7;
}

.hero-kicker {
  margin: 0.9rem 0 0;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  font-size: 0.72rem;
  font-weight: 700;
  color: #ffd8a6;
}

.hero-lead {
  margin: 0;
  max-width: 64ch;
  color: var(--rel-soft);
  line-height: 1.6;
}

.relations-layout {
  margin-top: 1.15rem;
  display: grid;
  grid-template-columns: 1.35fr 0.9fr;
  gap: 0.95rem;
}

.graph-panel,
.detail-panel {
  border: 1px solid rgba(248, 195, 122, 0.28);
  border-radius: 15px;
  background: rgba(8, 22, 32, 0.72);
  box-shadow: 0 15px 34px rgba(0, 0, 0, 0.24);
}

.graph-panel {
  padding: 0.8rem;
}

.detail-panel {
  padding: 0.95rem 1rem;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 0.75rem;
}

.filter-chip {
  border: 1px solid rgba(172, 214, 248, 0.45);
  border-radius: 999px;
  padding: 0.38rem 0.72rem;
  background: rgba(18, 44, 60, 0.72);
  color: #e8f4ff;
  font-weight: 700;
  cursor: pointer;
}

.filter-chip.active {
  color: #1f1508;
  border-color: rgba(255, 229, 188, 0.84);
  background: linear-gradient(120deg, #f8c37a, #ffe0b8);
}

#relations-graph {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  border: 1px solid rgba(172, 214, 248, 0.3);
  background: rgba(5, 17, 26, 0.72);
}

.link {
  stroke-width: 3.4;
  opacity: 0.78;
  transition: opacity 0.18s ease, stroke-width 0.18s ease;
}

.link.dimmed {
  opacity: 0.16;
}

.link.focused {
  opacity: 1;
  stroke-width: 4.6;
}

.link-ally {
  stroke: var(--rel-ally);
}

.link-rival {
  stroke: var(--rel-rival);
}

.link-family {
  stroke: var(--rel-family);
}

.node {
  cursor: pointer;
  transition: transform 0.18s ease;
}

.node circle {
  fill: #213446;
  stroke: rgba(182, 218, 245, 0.7);
  stroke-width: 2;
}

.node.dimmed {
  opacity: 0.26;
}

.node.focused circle {
  stroke: #ffe2bc;
  stroke-width: 2.7;
}

.node text {
  fill: #f3ece3;
  font-size: 12px;
  font-weight: 700;
  text-anchor: middle;
  pointer-events: none;
}

.detail-kicker {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.72rem;
  color: #ffd8ac;
}

.detail-panel h2 {
  margin: 0.7rem 0 0.55rem;
  color: #ffeace;
}

.detail-panel p {
  margin: 0;
  color: var(--rel-soft);
}

.detail-list {
  margin: 0.85rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.detail-list div {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 0.5rem;
  border-bottom: 1px solid rgba(172, 214, 248, 0.18);
  padding-bottom: 0.38rem;
}

.detail-list dt {
  color: #9fd5e8;
  font-weight: 700;
}

.detail-list dd {
  margin: 0;
  color: #f3ece3;
}

@media (max-width: 860px) {
  .relations-layout {
    grid-template-columns: 1fr;
  }

  .relations-page .container {
    padding: 0 0.75rem 2.2rem;
  }

  .relations-page .page-topbar {
    margin: 0 -0.75rem;
    padding: 0.75rem;
  }
}