:root {
  --bg: #02010a;
  --text: #e8e6ff;
  --muted: #9490c2;
  --accent: #7f5cff;
  --accent-2: #34d8ff;
  --panel-bg: rgba(10, 8, 28, 0.72);
  --panel-border: rgba(255, 255, 255, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  overflow: hidden;
}

#scene-container {
  position: fixed;
  inset: 0;
  z-index: 0;
}

#scene-container canvas {
  display: block;
}

.hud {
  position: fixed;
  z-index: 2;
  pointer-events: none;
}

.hud-top {
  top: 1.5rem;
  left: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.hud-logo {
  height: 2rem;
  width: auto;
  display: block;
}

.hud-sub {
  color: var(--muted);
  font-size: 0.95rem;
}

.hud-hint {
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
}

.hud-empty {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--muted);
  font-size: 1.1rem;
  text-align: center;
  max-width: 24rem;
}

.hud-panel {
  bottom: 1.5rem;
  left: 1.5rem;
  width: min(20rem, calc(100vw - 3rem));
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 1.25rem 1.5rem;
  backdrop-filter: blur(10px);
  pointer-events: auto;
}

.panel-close {
  position: absolute;
  top: 0.5rem;
  right: 0.75rem;
  background: none;
  border: none;
  color: var(--muted);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
}

.panel-close:hover {
  color: var(--text);
}

.panel-kind {
  margin: 0 0 0.25rem;
  color: var(--accent-2);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.panel-title {
  margin: 0 0 0.4rem;
  font-size: 1.25rem;
}

.panel-detail {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.hud-leaderboard {
  top: 1.5rem;
  right: 1.5rem;
  bottom: 1.5rem;
  width: min(16rem, calc(100vw - 3rem));
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 1.25rem 1rem;
  backdrop-filter: blur(10px);
  pointer-events: auto;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.leaderboard-title {
  margin: 0 0 0.75rem;
  padding: 0 0.5rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-2);
}

.leaderboard-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.leaderboard-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 0.5rem;
  border-radius: 10px;
}

.leaderboard-row:hover {
  background: rgba(255, 255, 255, 0.05);
}

.leaderboard-rank {
  width: 1.4rem;
  flex-shrink: 0;
  color: var(--muted);
  font-size: 0.8rem;
  text-align: right;
}

.leaderboard-avatar {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.08);
}

.leaderboard-avatar-fallback {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.leaderboard-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.9rem;
}

.leaderboard-count {
  color: var(--accent-2);
  font-size: 0.85rem;
  font-weight: 600;
  flex-shrink: 0;
}