/* Bhumi — Gaia DR3 Viewer styles */

:root {
  --bg: #0f1117;
  --card-bg: #1a1d27;
  --border: #2a2d3a;
  --text: #e0e0e8;
  --text-dim: #8888a0;
  --accent: #6ea8fe;
  --accent-bright: #8ec8ff;
  --highlight: #ffd866;
  --error: #f87171;
  --font-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace;
  --font-sans:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: var(--accent);
}

a:hover {
  color: var(--accent-bright);
}

/* Landing page */
body:has(.landing) {
  display: flex;
  flex-direction: column;
}

.landing {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  padding: 2rem;
}

.landing h1 {
  font-size: 3.5rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--accent-bright);
  margin-bottom: 0.25rem;
}

.subtitle {
  color: var(--text-dim);
  font-size: 1.1rem;
  margin-bottom: 2.5rem;
}

.search-form {
  display: flex;
  gap: 0.5rem;
  max-width: 500px;
  width: 100%;
}

.search-input {
  flex: 1;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  font-family: var(--font-mono);
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s;
}

.search-input:focus {
  border-color: var(--accent);
}

.search-btn {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
  transition: background 0.2s;
}

.search-btn:hover {
  background: var(--accent-bright);
}

.random-buttons {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

.random-btn {
  margin-top: 1rem;
  padding: 0.5rem 1.25rem;
  font-size: 0.9rem;
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}

.random-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.random-btn:disabled {
  opacity: 0.5;
  cursor: wait;
}

.error {
  color: var(--error);
  margin-top: 1rem;
  font-size: 0.95rem;
}

/* Header */
header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--border);
  background: var(--card-bg);
}

.home-link {
  font-size: 1.3rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--accent-bright);
  text-decoration: none;
}

.source-id-header {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--text-dim);
}

a.source-id-link {
  text-decoration: none;
  border-bottom: 1px dotted var(--text-dim);
}

a.source-id-link:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* Nav menu (kebab) */
.nav-menu-wrapper {
  position: relative;
}

.nav-menu-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-dim);
  font-size: 1.3rem;
  cursor: pointer;
  padding: 0.2rem 0.5rem;
  line-height: 1;
  transition: color 0.2s, border-color 0.2s;
}

.nav-menu-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.nav-menu {
  display: none;
  position: absolute;
  top: calc(100% + 0.4rem);
  left: 50%;
  transform: translateX(-50%);
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  min-width: 200px;
  padding: 0.4rem 0;
  z-index: 1000;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

.nav-menu.open {
  display: block;
}

.nav-menu a {
  display: block;
  padding: 0.45rem 1rem;
  font-size: 0.85rem;
  color: var(--text);
  text-decoration: none;
  transition: background 0.15s;
}

.nav-menu a:hover {
  background: var(--border);
  color: var(--accent);
}

/* External link buttons */
.external-links {
  display: flex;
  gap: 0.5rem;
  margin-left: auto;
}

.ext-link-btn {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 4px;
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}

.ext-link-btn:hover {
  background: var(--accent);
  color: var(--bg);
}

.notebook-btn {
  color: var(--highlight);
  border-color: var(--highlight);
}

.notebook-btn:hover {
  background: var(--highlight);
  color: var(--bg);
}

/* Main content */
main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem 2rem 4rem;
}

/* Cards */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

/* Collapsible cards */
.card h2 {
  cursor: pointer;
  user-select: none;
}

.card h2::after {
  content: '▾';
  float: right;
  font-size: 0.9em;
  color: var(--text-dim);
  transition: transform 0.2s;
}

.card.collapsed h2::after {
  transform: rotate(-90deg);
}

.card.collapsed h2 {
  margin-bottom: 0;
}

.card.collapsed > *:not(h2) {
  display: none !important;
}

/* Narrative summary */
.narrative {
  font-size: 1.05rem;
  color: var(--text);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  background: var(--card-bg);
  border-left: 3px solid var(--accent);
  border-radius: 4px;
}

.narrative p {
  margin: 0;
}

.narrative p + p {
  margin-top: 0.75rem;
}

.narrative {
  margin-top: 1.5rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
  font-size: 0.92rem;
}

.alt-names {
  margin-top: 1.5rem;
  padding-top: 0.75rem;
  font-size: 0.92rem;
}

.card h2 {
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 1rem;
  letter-spacing: 0.03em;
}

#aladin-lite-div {
  width: 100%;
  height: 400px;
  border-radius: 4px;
  margin-top: 0.5rem;
}

.card h3 {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
  margin: 1.5rem 0 0.75rem;
}

.card h4 {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
}

/* Data tables */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.data-table td {
  padding: 0.4rem 0.75rem;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.data-table .label {
  color: var(--text-dim);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  width: 200px;
  white-space: nowrap;
}

.two-col-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 700px) {
  .two-col-grid {
    grid-template-columns: 1fr;
  }
}

/* Stellar parameters comparison table */
.stellar-params-table th {
  padding: 0.4rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-dim);
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.stellar-params-table th:first-child {
  width: 160px;
}

.snr {
  display: block;
  color: var(--text-dim);
  font-size: 0.75rem;
  margin-top: 0.15em;
}

.ci {
  color: var(--text-dim);
  font-size: 0.85em;
}

.note {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

/* Info icons for plot descriptions */
.plot-wrapper {
  position: relative;
}

.plot-info {
  position: absolute;
  top: 6px;
  right: 6px;
  z-index: 10;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--border);
  color: var(--text-dim);
  font-size: 0.75rem;
  font-weight: 700;
  font-style: normal;
  line-height: 20px;
  text-align: center;
  cursor: help;
  user-select: none;
}

.plot-info:hover {
  background: var(--accent);
  color: var(--bg);
}

.plot-info .plot-info-tooltip {
  display: none;
  position: absolute;
  right: 0;
  top: 26px;
  width: 280px;
  padding: 0.6rem 0.75rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 0.78rem;
  font-weight: 400;
  line-height: 1.45;
  text-align: left;
  white-space: normal;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

.plot-info:hover .plot-info-tooltip {
  display: block;
}

/* Plot containers */
.plot-container {
  width: 100%;
  min-height: 350px;
  border-radius: 4px;
}

.orbit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1rem;
}

.orbit-grid .plot-container {
  min-height: 320px;
}

.velocity-tables {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1rem;
}

.loading {
  color: var(--text-dim);
  font-style: italic;
  padding: 2rem;
  text-align: center;
}

/* Footer */
footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-dim);
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
}

/* Responsive */
@media (max-width: 700px) {
  .velocity-tables {
    grid-template-columns: 1fr;
  }

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

  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}