:root {
  --bg-dark: #090c10;
  --bg-card: #141824;
  --bg-card-hover: #1c2233;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --accent-gold: #f6c343;
  --accent-cyan: #38bdf8;
  --accent-green: #3fb950;
  --accent-red: #f85149;
  --border-color: #30363d;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-primary);
  font-family: var(--font-main);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.app-header {
  background: #0d1117;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 16px 20px 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.branding {
  display: flex;
  align-items: center;
  gap: 14px;
}

.lunar-orb {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #e2e8f0, #94a3b8 60%, #475569);
  box-shadow: 0 0 12px rgba(226, 232, 240, 0.4);
}

.branding h1 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
}

.subtitle {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.header-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 9999px;
}

.badge-accent {
  background: rgba(246, 195, 67, 0.15);
  color: var(--accent-gold);
  border: 1px solid rgba(246, 195, 67, 0.3);
}

.badge-outline {
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-cyan);
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.badge-success {
  background: rgba(63, 185, 80, 0.15);
  color: var(--accent-green);
  border: 1px solid rgba(63, 185, 80, 0.3);
}

/* Nav Tabs - Min touch height 44px for iPad (ABAI L027) */
.nav-tabs {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  overflow-x: auto;
  scrollbar-width: none;
  gap: 4px;
}

.nav-tabs::-webkit-scrollbar {
  display: none;
}

.nav-tab {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 12px 18px;
  min-height: 44px;
  cursor: pointer;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
}

.nav-tab:hover {
  color: #fff;
}

.nav-tab.active {
  color: var(--accent-gold);
  border-bottom-color: var(--accent-gold);
}

/* Content Container */
.content-container {
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: 24px 20px;
  flex: 1;
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

/* Layout Grids */
.grid-2col {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 20px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.card h2 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: #fff;
}

/* Tables */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.spec-table tr {
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.spec-table td {
  padding: 10px 4px;
}

.spec-table td:first-child {
  color: var(--text-secondary);
  width: 42%;
}

/* Features */
.feature-item {
  display: flex;
  gap: 16px;
  margin-bottom: 18px;
}

.feature-icon {
  font-size: 1.5rem;
  line-height: 1;
}

.feature-item h3 {
  font-size: 0.98rem;
  color: var(--accent-gold);
  margin-bottom: 4px;
}

.feature-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Modality Grid */
.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.btn-group {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.btn {
  background: #21262d;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 8px 16px;
  min-height: 44px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn:hover {
  background: #30363d;
}

.btn.active, .btn-primary {
  background: var(--accent-gold);
  color: #0d1117;
  border-color: var(--accent-gold);
}

.modality-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.modality-card {
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  transition: transform 0.2s;
}

.modality-card:hover {
  border-color: var(--accent-cyan);
}

.modality-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.modality-tag {
  font-size: 0.72rem;
  font-weight: bold;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(56, 189, 248, 0.2);
  color: var(--accent-cyan);
}

.modality-title {
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.modality-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.modality-details {
  font-size: 0.78rem;
  color: #8b949e;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 8px;
}

/* Solar Geometry Simulator */
.control-group {
  margin-bottom: 20px;
}

.control-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.touch-slider {
  width: 100%;
  height: 10px;
  border-radius: 5px;
  background: #21262d;
  outline: none;
  cursor: pointer;
}

.touch-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-gold);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(246, 195, 67, 0.5);
}

.callout-box {
  background: #0d1117;
  border: 1px solid var(--border-color);
  padding: 16px;
  border-radius: var(--radius-md);
  margin-top: 16px;
}

.callout-box code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-gold);
  word-break: break-all;
}

.shadow-canvas-container {
  background: #11141c;
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  justify-content: center;
}

/* Sequence visualizer */
.sequence-visualizer {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 16px;
}

.token-block {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  font-family: var(--font-mono);
}

.token-vis { background: rgba(56, 189, 248, 0.2); color: var(--accent-cyan); border: 1px solid rgba(56, 189, 248, 0.4); }
.token-opt { background: rgba(246, 195, 67, 0.2); color: var(--accent-gold); border: 1px solid rgba(246, 195, 67, 0.4); }
.token-ctx { background: rgba(63, 185, 80, 0.2); color: var(--accent-green); border: 1px solid rgba(63, 185, 80, 0.4); }

.metric-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 16px;
}

.metric-box {
  background: #0d1117;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px;
  text-align: center;
}

.metric-val {
  display: block;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.metric-lbl {
  font-size: 0.72rem;
  color: var(--text-secondary);
}

/* Benchmark Grid */
.benchmark-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
}

.benchmark-card {
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
}

.benchmark-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.benchmark-metric {
  font-size: 0.82rem;
  color: var(--accent-cyan);
  margin-bottom: 12px;
}

.score-bar-container {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px;
}

.score-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
}

.score-val {
  font-weight: 700;
  font-family: var(--font-mono);
}

.score-val.highlight {
  color: var(--accent-green);
}

.benchmark-takeaway {
  font-size: 0.8rem;
  color: var(--text-secondary);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 8px;
}

/* Disclosures */
.disclosure-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.disclosure-item {
  background: #0d1117;
  border-left: 4px solid var(--accent-gold);
  padding: 12px 16px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.disclosure-item.CRITICAL_LIMITATION {
  border-left-color: var(--accent-red);
}

.disclosure-item h4 {
  font-size: 0.9rem;
  color: #fff;
  margin-bottom: 4px;
}

.disclosure-item p {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

/* Hub Container */
.hub-container {
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
}

.hub-stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.file-list {
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.file-list li {
  padding: 6px 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

/* Footer */
.app-footer {
  text-align: center;
  padding: 20px;
  font-size: 0.78rem;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-color);
  background: #0d1117;
  margin-top: auto;
}

/* Utilities */
.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }
.text-center { text-align: center; }
.text-sm { font-size: 0.78rem; }
.caption { font-size: 0.78rem; color: var(--text-secondary); margin-top: 8px; }
.info-alert { background: rgba(56, 189, 248, 0.1); border: 1px solid rgba(56, 189, 248, 0.3); border-radius: var(--radius-sm); padding: 12px; font-size: 0.82rem; }

/* Shackleton Explorer Styles */
.site-detail-box {
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
}

.btn-zone {
  min-height: 44px;
}

.btn-quickmap {
  background: #1f6feb;
  color: #ffffff;
  border-color: #388bfd;
  display: inline-block;
  text-decoration: none;
  padding: 12px 18px;
  font-weight: bold;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.btn-quickmap:hover {
  background: #388bfd;
  color: #ffffff;
}

/* Interactive Table Styles */
.table-responsive {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  width: 100%;
  margin-top: 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
  text-align: left;
}

.data-table th {
  background: #161b22;
  color: var(--text-primary);
  padding: 12px 14px;
  border-bottom: 2px solid var(--border-color);
  font-weight: 600;
  white-space: nowrap;
}

.data-table th.sortable {
  cursor: pointer;
  user-select: none;
}

.data-table th.sortable:hover {
  color: var(--accent-gold);
}

.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  white-space: nowrap;
}

.data-table tbody tr {
  cursor: pointer;
  transition: background 0.15s ease;
}

.data-table tbody tr:hover {
  background: rgba(56, 189, 248, 0.08);
}

.data-table tbody tr.active-row {
  background: rgba(246, 195, 67, 0.12);
  border-left: 3px solid var(--accent-gold);
}

.input-search {
  background: #0d1117;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: 0.85rem;
  min-height: 40px;
  min-width: 220px;
}

.input-search:focus {
  outline: none;
  border-color: var(--accent-cyan);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.78rem;
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

/* 3D Solar Lab specific styles */
.cam-presets-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  margin-top: 10px;
}

.btn-cam-preset {
  background: #1f2438;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.15s ease;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-cam-preset:hover {
  background: #28304a;
  border-color: var(--accent-cyan);
}

.btn-cam-preset.active {
  background: rgba(56, 189, 248, 0.25) !important;
  border-color: var(--accent-cyan) !important;
  color: #fff !important;
  font-weight: 600;
  box-shadow: 0 0 8px rgba(56, 189, 248, 0.3);
}

#lab-btn-autorotate {
  margin-left: auto;
  border-color: rgba(246, 195, 67, 0.4);
}

#lab-btn-autorotate.active {
  background: rgba(246, 195, 67, 0.2) !important;
  border-color: var(--accent-gold) !important;
  color: var(--accent-gold) !important;
  box-shadow: 0 0 8px rgba(246, 195, 67, 0.3);
}

.telemetry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 10px;
  margin: 12px 0;
}

.telemetry-stat {
  background: #0d1117;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  text-align: center;
}

.telemetry-val {
  display: block;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
}

.telemetry-lbl {
  display: block;
  font-size: 0.72rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  margin-top: 4px;
}

/* Inline source links: the browser default (#0000EE) is unreadable on the dark cards (ABAI L023) */
.card p a,
.callout-box a,
.spec-table a {
  color: var(--accent-cyan, #38bdf8);
  text-decoration: underline;
}