:root {
  --lit-bg: #05080f;
  --lit-surface: rgba(11, 18, 32, 0.82);
  --lit-line: rgba(148, 163, 184, 0.18);
  --lit-text: #e8eef8;
  --lit-muted: #91a0b8;
  --lit-soft: #c9d5e8;
  --lit-accent: #d4853a;
  --lit-accent-2: #3fb7d6;
}

body {
  background: radial-gradient(circle at 20% 12%, rgba(63, 183, 214, 0.12), transparent 30%),
              radial-gradient(circle at 80% 8%, rgba(212, 133, 58, 0.12), transparent 28%),
              var(--lit-bg);
}

.literature-shell {
  min-height: calc(100vh - 72px);
  padding: 92px 28px 28px;
  color: var(--lit-text);
}

.literature-toolbar {
  display: grid;
  grid-template-columns: minmax(220px, 0.72fr) minmax(340px, 1.6fr) minmax(220px, 0.86fr);
  gap: 16px;
  align-items: end;
  max-width: 1500px;
  margin: 0 auto 16px;
}

.literature-title-block h1 {
  margin: 4px 0 0;
  font-size: 30px;
  font-weight: 800;
  letter-spacing: 0;
}

.literature-kicker,
.panel-label {
  color: var(--lit-accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.literature-search {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  padding: 8px;
  border: 1px solid var(--lit-line);
  border-radius: 16px;
  background: rgba(8, 13, 24, 0.82);
  box-shadow: 0 18px 54px rgba(0, 0, 0, 0.24);
}

.literature-search input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: none;
  border-radius: 12px;
  padding: 12px 14px;
  color: var(--lit-text);
  background: transparent;
  font: inherit;
}

.literature-search button,
.candidate-action {
  border: 0;
  border-radius: 12px;
  padding: 12px 16px;
  color: #150d06;
  background: linear-gradient(135deg, #f1b15f, var(--lit-accent));
  font-weight: 800;
  cursor: pointer;
}

.literature-search button:disabled,
.candidate-action:disabled {
  opacity: 0.58;
  cursor: wait;
}

.literature-status {
  min-height: 42px;
  padding: 12px 14px;
  border: 1px solid var(--lit-line);
  border-radius: 14px;
  color: var(--lit-muted);
  background: rgba(8, 13, 24, 0.62);
  font-size: 13px;
  line-height: 1.35;
}

.literature-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 390px;
  gap: 16px;
  max-width: 1500px;
  height: calc(100vh - 188px);
  min-height: 590px;
  margin: 0 auto;
}

.literature-stage,
.literature-panel {
  border: 1px solid var(--lit-line);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.78), rgba(3, 7, 18, 0.84));
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.26);
  overflow: hidden;
}

.literature-stage {
  position: relative;
}

.literature-stage > [hidden] {
  display: none !important;
}

.literature-empty {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 10px;
  padding: 28px;
  text-align: center;
}

.empty-mark {
  display: grid;
  place-items: center;
  width: 70px;
  height: 70px;
  border: 1px solid rgba(212, 133, 58, 0.38);
  border-radius: 18px;
  color: var(--lit-accent);
  background: rgba(212, 133, 58, 0.1);
  font-weight: 800;
}

.literature-empty h2 {
  margin: 0;
  font-size: 25px;
  letter-spacing: 0;
}

.literature-empty p {
  max-width: 560px;
  margin: 0;
  color: var(--lit-muted);
  line-height: 1.55;
}

.candidate-grid {
  height: 100%;
  overflow: auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-content: start;
  gap: 12px;
  padding: 16px;
}

.candidate-card {
  border: 1px solid var(--lit-line);
  border-radius: 14px;
  padding: 14px;
  background: rgba(8, 13, 24, 0.72);
  cursor: pointer;
  transition: border-color .18s ease, background .18s ease, transform .18s ease;
}

.candidate-card:hover,
.candidate-card:focus-visible {
  border-color: rgba(63, 183, 214, 0.58);
  background: rgba(11, 20, 36, 0.88);
  outline: none;
}

.candidate-card.is-selected {
  border-color: rgba(212, 133, 58, 0.78);
  background: rgba(28, 19, 12, 0.72);
}

.candidate-rank {
  color: var(--lit-accent-2);
  font-size: 12px;
  font-weight: 800;
}

.candidate-title {
  margin: 8px 0 6px;
  color: var(--lit-text);
  font-size: 15px;
  font-weight: 800;
  line-height: 1.32;
}

.candidate-meta,
.candidate-abstract {
  color: var(--lit-muted);
  font-size: 12px;
  line-height: 1.45;
}

.candidate-abstract {
  margin-top: 8px;
  color: var(--lit-soft);
}

.candidate-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 12px;
}

.candidate-links a {
  color: var(--lit-accent-2);
  font-size: 12px;
  text-decoration: none;
}

.graph-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.literature-panel {
  overflow: auto;
  padding: 16px;
}

.panel-section {
  padding: 0 0 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--lit-line);
}

.panel-section:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.panel-title {
  margin-top: 6px;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.28;
}

.panel-copy {
  margin-top: 8px;
  color: var(--lit-muted);
  font-size: 13px;
  line-height: 1.52;
}

.meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.meta-item {
  border: 1px solid var(--lit-line);
  border-radius: 12px;
  padding: 9px 10px;
  background: rgba(8, 13, 24, 0.58);
}

.meta-key {
  color: var(--lit-muted);
  font-size: 11px;
}

.meta-value {
  margin-top: 4px;
  color: var(--lit-text);
  font-size: 13px;
  word-break: break-word;
}

.related-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.related-list li {
  border: 1px solid var(--lit-line);
  border-radius: 12px;
  padding: 9px 10px;
  color: var(--lit-soft);
  background: rgba(8, 13, 24, 0.5);
  font-size: 12px;
  line-height: 1.4;
}

.node-label {
  pointer-events: none;
  fill: #e8eef8;
  font-size: 10px;
  paint-order: stroke;
  stroke: rgba(3, 7, 18, 0.85);
  stroke-width: 3px;
}

@media (max-width: 1100px) {
  .literature-toolbar {
    grid-template-columns: 1fr;
  }

  .literature-workspace {
    grid-template-columns: 1fr;
    height: auto;
  }

  .literature-stage {
    min-height: 620px;
  }

  .literature-panel {
    min-height: 320px;
  }
}

@media (max-width: 720px) {
  .literature-shell {
    padding: 84px 14px 18px;
  }

  .literature-search {
    grid-template-columns: 1fr;
  }

  .candidate-grid {
    grid-template-columns: 1fr;
  }
}