.hr-diagram-page {
  background:
    radial-gradient(circle at 78% 8%, rgba(74, 158, 255, 0.12), transparent 28rem),
    var(--bg);
}

.hr-container {
  max-width: 1380px;
}

.hr-header {
  display: flex;
  align-items: baseline;
  gap: 0.9rem 1.25rem;
  max-width: none;
  padding: 0.8rem 0 1rem;
}

.hr-header h1 {
  margin: 0;
  font-size: clamp(1.35rem, 2.5vw, 2.1rem);
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.hr-header > p:last-child {
  margin-left: auto;
  color: var(--text-muted);
  font-size: 0.82rem;
  white-space: nowrap;
}

.hr-intro {
  display: grid;
  grid-template-columns: minmax(240px, 0.75fr) minmax(0, 1.25fr);
  gap: 2rem;
  margin-top: 2rem;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.hr-intro h2,
.hr-reading h2 {
  margin: 0;
  line-height: 1.2;
}

.hr-intro-copy {
  color: var(--text-muted);
}

.hr-intro-copy p + p {
  margin-top: 0.75rem;
}

.hr-lab {
  overflow: hidden;
  background: #070b14;
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.32);
}

.hr-lab-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.4rem 1rem;
  border-bottom: 1px solid var(--border);
}

.hr-lab-heading h2 {
  margin: 0.2rem 0 0;
  font-size: 1.45rem;
}

.hr-lab-heading > p {
  color: var(--text-muted);
  font: 0.72rem ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.04em;
}

.hr-controls {
  display: grid;
  grid-template-columns: minmax(220px, 1.5fr) minmax(160px, 0.75fr) auto auto auto;
  gap: 0.75rem;
  align-items: end;
  padding: 1rem 1.4rem;
  background: rgba(26, 31, 53, 0.6);
  border-bottom: 1px solid var(--border);
}

.hr-field {
  display: grid;
  gap: 0.35rem;
  min-width: 0;
  color: var(--text-muted);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.hr-field span {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
}

.hr-field output {
  color: var(--text);
  font-weight: 500;
  letter-spacing: 0;
  text-transform: none;
}

.hr-field input[type="search"],
.hr-field select {
  width: 100%;
  min-height: 42px;
  padding: 0 0.75rem;
  color: var(--text);
  background: #0d1220;
  border: 1px solid var(--border);
  border-radius: 5px;
  font: inherit;
  font-size: 0.82rem;
  letter-spacing: 0;
  text-transform: none;
}

.hr-field input[type="search"]::placeholder {
  color: #687187;
}

.hr-field input[type="range"] {
  width: 100%;
  min-height: 42px;
  accent-color: var(--accent);
}

.hr-check {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  min-height: 42px;
  color: var(--text-muted);
  font-size: 0.78rem;
  white-space: nowrap;
}

.hr-check input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

#hr-reset {
  min-height: 42px;
  padding: 0 0.9rem;
  color: var(--text);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 5px;
  font-weight: 700;
  white-space: nowrap;
}

.hr-advanced-jump {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 42px;
  padding: 0 0.9rem;
  color: var(--accent);
  background: rgba(74, 158, 255, 0.08);
  border: 1px solid rgba(74, 158, 255, 0.45);
  border-radius: 5px;
  font-size: 0.78rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.hr-advanced-jump:hover,
#hr-reset:hover {
  border-color: var(--accent);
}

.hr-advanced {
  background: #0b101d;
  border-bottom: 1px solid var(--border);
}

.hr-advanced summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 72px;
  padding: 0.9rem 1.4rem;
  color: var(--text);
  cursor: pointer;
  list-style: none;
}

.hr-advanced summary::-webkit-details-marker {
  display: none;
}

.hr-advanced summary::before {
  content: "+";
  display: grid;
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  place-items: center;
  color: var(--accent);
  border: 1px solid var(--border);
  border-radius: 50%;
  font-size: 1.1rem;
  line-height: 1;
}

.hr-advanced[open] summary::before {
  content: "−";
}

.hr-advanced summary > span:first-of-type {
  display: grid;
  flex: 1;
}

.hr-advanced summary strong {
  font-size: 0.92rem;
}

.hr-advanced summary small,
#hr-advanced-status {
  color: var(--text-muted);
  font-size: 0.72rem;
}

#hr-advanced-status {
  text-align: right;
}

.hr-advanced-content {
  display: grid;
  gap: 1.25rem;
  padding: 0 1.4rem 1.4rem;
}

.hr-range-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.8rem;
}

.hr-range-section {
  min-width: 0;
  padding: 0.9rem;
  background: #0e1423;
  border: 1px solid var(--border);
  border-radius: 6px;
}

.hr-range-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
}

.hr-range-heading h3,
.hr-constellation-heading h3 {
  margin: 0;
  font-size: 0.8rem;
}

.hr-range-heading output {
  color: var(--text-muted);
  font: 0.66rem ui-monospace, SFMono-Regular, Menlo, monospace;
  text-align: right;
}

.hr-dual-range {
  --range-start: 0%;
  --range-end: 100%;
  position: relative;
  height: 42px;
  margin-top: 0.45rem;
}

.hr-dual-range::before,
.hr-range-track {
  position: absolute;
  top: 50%;
  height: 4px;
  transform: translateY(-50%);
  border-radius: 999px;
  pointer-events: none;
}

.hr-dual-range::before {
  content: "";
  right: 0;
  left: 0;
  background: #293147;
}

.hr-range-track {
  right: calc(100% - var(--range-end));
  left: var(--range-start);
  z-index: 1;
  background: var(--accent);
}

.hr-dual-range input[type="range"] {
  position: absolute;
  z-index: 2;
  inset: 0;
  width: 100%;
  margin: 0;
  appearance: none;
  background: transparent;
  pointer-events: none;
}

.hr-dual-range input[type="range"]::-webkit-slider-runnable-track {
  height: 4px;
  background: transparent;
}

.hr-dual-range input[type="range"]::-webkit-slider-thumb {
  width: 18px;
  height: 18px;
  margin-top: -7px;
  appearance: none;
  background: #9fd0ff;
  border: 2px solid #07101e;
  border-radius: 50%;
  pointer-events: auto;
}

.hr-dual-range input[type="range"]::-moz-range-track {
  height: 4px;
  background: transparent;
}

.hr-dual-range input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: #9fd0ff;
  border: 2px solid #07101e;
  border-radius: 50%;
  pointer-events: auto;
}

.hr-advanced-options {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 0.7fr) minmax(260px, 1.1fr);
  gap: 1rem;
}

.hr-chip-group,
.hr-constellations {
  min-width: 0;
  padding: 0.9rem;
  background: #0e1423;
  border: 1px solid var(--border);
  border-radius: 6px;
}

.hr-chip-group {
  margin: 0;
}

.hr-chip-group legend {
  padding: 0 0.3rem;
  color: var(--text);
  font-size: 0.8rem;
  font-weight: 700;
}

.hr-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.hr-chip-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
  margin: 0 0 0.7rem;
  color: var(--text-muted);
  font-size: 0.66rem;
}

.hr-chip-heading button {
  padding: 0.25rem 0.55rem;
  color: var(--accent);
  background: transparent;
  border: 1px solid rgba(74, 158, 255, 0.45);
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 700;
}

.hr-chip-actions {
  display: flex;
  gap: 0.35rem;
}

.hr-chip-heading button:hover,
.hr-chip-heading button:focus-visible {
  color: #fff;
  border-color: var(--accent);
}

.hr-chip-list button,
.hr-constellation-list button,
#hr-clear-constellations {
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.72rem;
}

.hr-chip-list button {
  min-height: 34px;
  padding: 0.35rem 0.7rem;
}

.hr-chip-list button[aria-pressed="true"],
.hr-constellation-list button[aria-pressed="true"] {
  color: #ddecff;
  background: rgba(74, 158, 255, 0.14);
  border-color: var(--accent);
}

.hr-spectral-chips button {
  min-width: 36px;
  padding-right: 0.45rem;
  padding-left: 0.45rem;
}

.hr-constellations {
  display: grid;
  gap: 0.65rem;
}

.hr-constellation-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
}

#hr-clear-constellations {
  padding: 0.25rem 0.55rem;
}

.hr-constellation-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.4rem;
  max-height: 180px;
  overflow: auto;
  padding-right: 0.2rem;
}

.hr-constellation-list button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  min-height: 34px;
  padding: 0.35rem 0.65rem;
  border-radius: 5px;
  text-align: left;
}

.hr-constellation-list button span:last-child {
  color: #758098;
  font: 0.64rem ui-monospace, SFMono-Regular, Menlo, monospace;
}

.hr-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 255px;
  min-height: 690px;
}

.hr-chart-wrap {
  position: relative;
  min-width: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 20% 18%, rgba(97, 139, 255, 0.09), transparent 30%),
    radial-gradient(circle at 80% 76%, rgba(255, 107, 53, 0.07), transparent 28%),
    #050810;
}

#hr-chart {
  display: block;
  width: 100%;
  height: 690px;
  touch-action: manipulation;
}

.hr-details {
  padding: 1.35rem 1.2rem;
  background: #0b101d;
  border-left: 1px solid var(--border);
}

.hr-details h3 {
  margin: 0.2rem 0 0.45rem;
  font-size: 1.55rem;
  line-height: 1.15;
}

#hr-star-summary {
  min-height: 3.6rem;
  margin-bottom: 1.1rem;
  color: var(--text-muted);
  font-size: 0.83rem;
}

.hr-details dl {
  display: grid;
  gap: 0;
}

.hr-details dl div {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.7rem;
  padding: 0.66rem 0;
  border-top: 1px solid var(--border);
}

.hr-details dt {
  color: var(--text-muted);
  font-size: 0.72rem;
}

.hr-details dd {
  max-width: 130px;
  color: var(--text);
  font-size: 0.76rem;
  text-align: right;
}

.hr-temperature-key {
  display: grid;
  grid-template-columns: auto minmax(240px, 520px) auto;
  justify-content: center;
  align-items: center;
  gap: 0.8rem;
  padding: 0.9rem 1.4rem 1.1rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hr-temperature-key div {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  overflow: hidden;
  border-radius: 999px;
}

.hr-temperature-key i {
  padding: 0.2rem;
  color: #07101e;
  font-style: normal;
  text-align: center;
}

.spectral-o { background: #8eb8ff; }
.spectral-b { background: #adc9ff; }
.spectral-a { background: #d7e2ff; }
.spectral-f { background: #fff7df; }
.spectral-g { background: #ffe38c; }
.spectral-k { background: #ffb05c; }
.spectral-m { background: #ff6b48; }

.hr-tooltip {
  position: absolute;
  z-index: 8;
  max-width: 230px;
  padding: 0.65rem 0.75rem;
  color: var(--text);
  background: rgba(9, 14, 25, 0.96);
  border: 1px solid #46506b;
  border-radius: 5px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.45);
  pointer-events: none;
  font-size: 0.75rem;
}

.hr-tooltip strong {
  display: block;
  margin-bottom: 0.2rem;
}

.hr-tooltip span {
  color: var(--text-muted);
}

.hr-error {
  position: absolute;
  inset: 45% 1rem auto;
  color: #ff9f80;
  text-align: center;
}

.hr-reading {
  padding: 3rem 0 1rem;
}

.hr-reading-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.3rem;
}

.hr-reading article {
  min-height: 220px;
  padding: 1.35rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 7px;
}

.hr-reading article > span {
  color: var(--accent);
  font: 0.72rem ui-monospace, SFMono-Regular, Menlo, monospace;
}

.hr-reading h3 {
  margin: 2.4rem 0 0.55rem;
  line-height: 1.2;
}

.hr-reading article p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* D3 chart */
.hr-plot-frame {
  fill: transparent;
  stroke: #303950;
}

.hr-grid line {
  stroke: #232b3e;
  stroke-width: 1;
}

.hr-grid path,
.hr-axis path {
  display: none;
}

.hr-axis line {
  stroke: #46506a;
}

.hr-axis text,
.hr-axis-title,
.hr-region-label {
  fill: #919bb2;
  font-family: system-ui, sans-serif;
  font-size: 11px;
}

.hr-axis-title {
  fill: #cbd2e1;
  font-size: 12px;
  font-weight: 700;
}

.hr-region-label {
  fill: #536079;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hr-region-path {
  fill: none;
  stroke: #536079;
  stroke-width: 1;
  stroke-dasharray: 4 6;
  opacity: 0.5;
}

.hr-star {
  stroke: rgba(255, 255, 255, 0.42);
  stroke-width: 0.6;
  cursor: pointer;
  transition: opacity 0.18s ease, stroke-width 0.18s ease;
}

.hr-star:hover,
.hr-star.is-selected {
  stroke: #fff;
  stroke-width: 2;
}

.hr-star.is-muted {
  opacity: 0.12;
}

.hr-star-label {
  fill: #d9dfec;
  font-family: system-ui, sans-serif;
  font-size: 10px;
  paint-order: stroke;
  stroke: #050810;
  stroke-width: 3px;
  pointer-events: none;
}

.hr-star-label.is-priority { fill: #b9d9ff; font-weight: 750; }

.hr-sun-ring {
  fill: none;
  stroke: #8eff78;
  stroke-width: 1.5;
  pointer-events: none;
}

@media (max-width: 1180px) {
  .hr-controls {
    grid-template-columns: minmax(220px, 1.4fr) minmax(150px, 0.8fr) auto auto auto;
  }

  .hr-check,
  #hr-reset {
    align-self: end;
  }
}

@media (max-width: 1050px) {
  .hr-range-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hr-advanced-options {
    grid-template-columns: 1fr 1fr;
  }

  .hr-constellations {
    grid-column: 1 / -1;
  }
}

@media (max-width: 900px) {
  .hr-workspace {
    grid-template-columns: 1fr;
  }

  .hr-details {
    border-top: 1px solid var(--border);
    border-left: 0;
  }

  .hr-details dl {
    grid-template-columns: repeat(2, 1fr);
    column-gap: 1.2rem;
  }

  #hr-star-summary {
    min-height: 0;
  }
}

@media (max-width: 700px) {
  .hr-header {
    display: grid;
    gap: 0.25rem;
  }

  .hr-header > p:last-child {
    margin-left: 0;
    white-space: normal;
  }

  .hr-container {
    padding-right: 0.8rem;
    padding-left: 0.8rem;
  }

  .hr-intro,
  .hr-reading-grid {
    grid-template-columns: 1fr;
  }

  .hr-controls {
    grid-template-columns: 1fr 1fr;
  }

  .hr-search-field {
    grid-column: 1 / -1;
  }

  .hr-advanced-jump,
  #hr-reset {
    min-width: 0;
  }

  .hr-advanced summary {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  #hr-advanced-status {
    width: 100%;
    padding-left: 44px;
    text-align: left;
  }

  #hr-chart {
    height: 570px;
  }

  .hr-workspace {
    min-height: 570px;
  }

  .hr-temperature-key {
    grid-template-columns: 1fr;
    gap: 0.4rem;
    text-align: center;
  }

  .hr-reading article {
    min-height: 0;
  }

  .hr-reading h3 {
    margin-top: 1.2rem;
  }
}

@media (max-width: 460px) {
  .hr-header h1 {
    font-size: 1.55rem;
  }

  .hr-controls {
    grid-template-columns: 1fr;
  }

  .hr-search-field {
    grid-column: auto;
  }

  .hr-range-grid,
  .hr-advanced-options {
    grid-template-columns: 1fr;
  }

  .hr-constellations {
    grid-column: auto;
  }

  .hr-constellation-list {
    grid-template-columns: 1fr;
  }

  .hr-details dl {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 2200px) {
  .hr-container {
    max-width: calc(100vw - 304px);
  }

  .hr-workspace {
    height: max(820px, calc(100vh - 330px));
    min-height: 820px;
  }

  #hr-chart {
    height: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hr-star {
    transition: none;
  }
}