:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: #1a2234;
  --bg-hover: #243049;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-github: #2ea44f;
  --accent-so: #f48024;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --border: #1e293b;
  --radius: 8px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow: hidden;
  height: 100vh;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.header__brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header__icon {
  font-size: 24px;
}

.header__title {
  font-size: 18px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header__subtitle {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 400;
}

.header__actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-family: var(--font);
  font-weight: 500;
  text-decoration: none;
  transition: background 0.2s, transform 0.15s;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--star {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border);
  color: #e2e8f0;
}

.btn--star:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: #f0c040;
  color: #f0c040;
}

.btn--sponsor {
  background: rgba(219, 39, 119, 0.15);
  border: 1px solid rgba(219, 39, 119, 0.4);
  color: #f472b6;
}

.btn--sponsor:hover {
  background: rgba(219, 39, 119, 0.25);
  border-color: #f472b6;
}

/* Centered search bar */
.search-bar {
  position: fixed;
  top: 72px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 90;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  transition: top 0.3s ease, opacity 0.3s ease;
}

.search-bar__samples.hidden {
  opacity: 0;
  pointer-events: none;
}

.search-bar__inner {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(17, 24, 39, 0.9);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 6px 8px 6px 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-bar__inner:focus-within {
  border-color: var(--accent-blue);
  box-shadow: 0 8px 32px rgba(59, 130, 246, 0.15);
}

.search-bar__icon {
  color: var(--text-muted);
  flex-shrink: 0;
}

.search-bar__inner input {
  width: 360px;
  padding: 8px 4px;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 14px;
  font-family: var(--font);
  outline: none;
}

.search-bar__inner input::placeholder {
  color: var(--text-muted);
}

.search-bar__inner select {
  padding: 6px 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  color: var(--text-secondary);
  font-size: 12px;
  font-family: var(--font);
  cursor: pointer;
  outline: none;
  transition: border-color 0.2s;
}

.search-bar__inner select:focus {
  border-color: var(--accent-blue);
}

.search-bar__samples {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-muted);
  transition: opacity 0.3s ease;
}

.search-bar__samples button {
  background: rgba(30, 41, 59, 0.7);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 4px 12px;
  color: var(--text-secondary);
  font-size: 11px;
  font-family: var(--font);
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.search-bar__samples button:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--accent-blue);
}

/* Main layout */
.main {
  position: relative;
  width: 100%;
  height: 100vh;
  padding-top: 56px;
}

#globe-container {
  width: 100%;
  height: 100%;
}

/* Sidebar */
.sidebar {
  position: fixed;
  top: 56px;
  right: 0;
  width: 320px;
  height: calc(100vh - 56px);
  background: rgba(17, 24, 39, 0.92);
  backdrop-filter: blur(12px);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 50;
  transition: transform 0.3s ease;
}

.sidebar__header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.sidebar__header h2 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
}

.sidebar__filters {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.sidebar__filters select {
  width: 100%;
  padding: 6px 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 11px;
  cursor: pointer;
  outline: none;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar__list {
  list-style: none;
  overflow-y: auto;
  flex: 1;
  padding: 8px 0;
}

.sidebar__list::-webkit-scrollbar {
  width: 6px;
}

.sidebar__list::-webkit-scrollbar-thumb {
  background: var(--bg-hover);
  border-radius: 3px;
}

/* Leaderboard item */
.lb-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  cursor: pointer;
  transition: background 0.15s;
}

.lb-item:hover {
  background: var(--bg-hover);
}

.lb-item.active {
  background: var(--bg-hover);
  border-left: 3px solid var(--accent-blue);
}

.lb-item__rank {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  width: 24px;
  text-align: right;
}

.lb-item__avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
}

.lb-item__info {
  flex: 1;
  min-width: 0;
}

.lb-item__name {
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lb-item__meta {
  font-size: 11px;
  color: var(--text-muted);
}

.lb-item__score {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent-blue);
}

/* Detail panel */
.detail-panel {
  position: fixed;
  top: 56px;
  left: 0;
  width: 420px;
  height: calc(100vh - 56px);
  background: rgba(17, 24, 39, 0.95);
  backdrop-filter: blur(16px);
  border-right: 1px solid var(--border);
  z-index: 60;
  overflow-y: auto;
  padding: 24px;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
}

.detail-panel.open {
  transform: translateX(0);
}

.detail-panel__close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 24px;
  cursor: pointer;
  line-height: 1;
}

.detail-panel__close:hover {
  color: var(--text-primary);
}

/* Detail header */
.detail-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.detail-header__avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 2px solid var(--accent-blue);
}

.detail-header__name {
  font-size: 20px;
  font-weight: 700;
}

.detail-header__location {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

.detail-header__score-badge {
  display: inline-block;
  margin-top: 6px;
  padding: 3px 10px;
  background: var(--accent-blue);
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}

.detail-header__links {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.detail-header__links a {
  font-size: 11px;
  color: var(--accent-blue);
  text-decoration: none;
}

.detail-header__links a:hover {
  text-decoration: underline;
}

/* Chart sections */
.chart-section {
  margin-bottom: 24px;
}

.chart-section h3 {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

/* Radar chart */
#chart-radar svg {
  width: 100%;
  max-width: 280px;
  margin: 0 auto;
  display: block;
}

/* Heatmap */
#chart-heatmap {
  overflow-x: auto;
}

/* Language donut */
#chart-languages {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Repos list */
.repo-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: var(--bg-card);
  border-radius: var(--radius);
  margin-bottom: 6px;
}

.repo-item__name {
  font-size: 13px;
  font-weight: 500;
  color: var(--accent-blue);
}

.repo-item__stats {
  display: flex;
  gap: 12px;
  font-size: 11px;
  color: var(--text-muted);
}

/* Tooltip */
.tooltip {
  position: fixed;
  pointer-events: none;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  z-index: 200;
  opacity: 0;
  transition: opacity 0.2s;
  max-width: 300px;
  min-width: 240px;
  backdrop-filter: blur(8px);
}

.tooltip.visible {
  opacity: 1;
}

.tooltip__header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.tooltip__avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid var(--border);
  object-fit: cover;
}

.tooltip__name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.tooltip__login {
  font-size: 11px;
  color: var(--text-muted);
}

.tooltip__score {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-blue);
  margin-bottom: 6px;
}

.tooltip__stats {
  display: flex;
  gap: 10px;
  font-size: 11px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.tooltip__stats span {
  display: flex;
  align-items: center;
  gap: 2px;
}

.tooltip__so {
  color: #f48024;
  font-weight: 500;
}

.tooltip__meta {
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  gap: 4px;
}

/* Stats grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 12px 10px;
  text-align: center;
  border: 1px solid var(--border);
}

.stat-card--so {
  border-color: rgba(244, 128, 36, 0.3);
}

.stat-card__value {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-card--so .stat-card__value {
  color: var(--accent-so);
}

.stat-card__label {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-top: 4px;
}

/* SO bars */
.so-bars {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.so-bar {
  display: grid;
  grid-template-columns: 90px 1fr 60px;
  align-items: center;
  gap: 10px;
}

.so-bar__label {
  font-size: 12px;
  color: var(--text-secondary);
}

.so-bar__track {
  height: 8px;
  background: var(--bg-primary);
  border-radius: 4px;
  overflow: hidden;
}

.so-bar__fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.6s ease;
}

.so-bar__value {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  text-align: right;
}

.so-empty {
  font-size: 12px;
  color: var(--text-muted);
  font-style: italic;
  padding: 12px 0;
}

.so-profile-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 11px;
  color: var(--accent-so);
  text-decoration: none;
}

.so-profile-link:hover {
  text-decoration: underline;
}

/* Leaderboard badges */
.lb-item__badges {
  display: flex;
  gap: 6px;
  margin-top: 3px;
}

.lb-badge {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 10px;
  font-weight: 500;
}

.lb-badge--gh {
  background: rgba(46, 164, 79, 0.15);
  color: var(--accent-github);
}

.lb-badge--so {
  background: rgba(244, 128, 36, 0.15);
  color: var(--accent-so);
}

/* Loading state */
.loading-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  z-index: 999;
  transition: opacity 0.5s;
}

.loading-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-text {
  margin-top: 16px;
  font-size: 14px;
  color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 1024px) {
  .sidebar {
    width: 280px;
  }
  .detail-panel {
    width: 360px;
  }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .detail-panel {
    width: 100%;
  }
}