* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
:root {
  --sb: #0f1420;
  --sb-line: #232b3d;
  --accent: #4aa8ff;
  --text: #eaf1fb;
  --text-dim: #8a97ad;
  --good: #37d67a;
  --bad: #ff5c6c;
  --warn: #ffb648;
  --font: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
}
body {
  background-color: #060a12;
  color: var(--text);
  font-family: var(--font);
  overflow: hidden;
  user-select: none;
}
#game-container {
  position: relative;
  width: 100vw;
  height: 100vh;
  background-color: #050a14;
  overflow: hidden;
}
canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: grab;
}
canvas:active {
  cursor: grabbing;
}

#timeline-controls {
  position: absolute;
  bottom: 20px;
  left: 420px;
  right: 30px;
  background: rgba(15, 20, 32, 0.92);
  border: 1px solid var(--sb-line);
  border-radius: 10px;
  padding: 14px 22px;
  display: flex;
  align-items: center;
  gap: 18px;
  z-index: 10;
  backdrop-filter: blur(4px);
}
.ctrl-btn {
  background: transparent;
  border: 1.5px solid var(--accent);
  color: var(--accent);
  font-family: var(--font);
  font-weight: 700;
  padding: 8px 18px;
  border-radius: 7px;
  cursor: pointer;
  font-size: 14px;
  letter-spacing: 0.3px;
  transition: all 0.12s ease;
}
.ctrl-btn:hover {
  background: var(--accent);
  color: #06101f;
}
#timeline-slider {
  flex-grow: 1;
  accent-color: var(--accent);
  cursor: pointer;
  height: 4px;
}
#speed-select {
  background: #1a2233;
  border: 1px solid var(--sb-line);
  color: var(--text);
  font-family: var(--font);
  padding: 7px 12px;
  border-radius: 7px;
  font-size: 14px;
  cursor: pointer;
}
#timeline-counter {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  min-width: 120px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

#mode-switch {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(15, 20, 32, 0.92);
  border: 1px solid var(--sb-line);
  border-radius: 10px;
  padding: 5px;
  display: flex;
  gap: 6px;
  z-index: 10;
  backdrop-filter: blur(4px);
}
.mode-btn {
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-dim);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 700;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  letter-spacing: 0.2px;
  transition: 0.12s ease;
}
.mode-btn:hover {
  color: var(--text);
}
.mode-btn.active {
  color: #06101f;
  background: var(--accent);
  border-color: var(--accent);
}

#zoom-hud {
  position: absolute;
  top: 22px;
  right: 30px;
  background: rgba(15, 20, 32, 0.9);
  border: 1px solid var(--sb-line);
  border-radius: 8px;
  padding: 9px 15px;
  font-size: 14px;
  font-weight: 700;
  color: var(--warn);
  z-index: 10;
  pointer-events: none;
  letter-spacing: 0.3px;
}

#vylor-branding {
  position: absolute;
  left: 24px;
  bottom: 24px;
  z-index: 10;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 20, 32, 0.85);
  border: 1px solid var(--sb-line);
  border-radius: 10px;
  padding: 10px 12px;
  backdrop-filter: blur(4px);
  transition: transform 0.12s ease, border-color 0.12s ease;
}
#vylor-branding:hover {
  transform: translateY(-1px);
  border-color: rgba(74, 168, 255, 0.65);
}
#vylor-logo {
  display: block;
  width: 120px;
  height: auto;
}

#onboarding-info-btn {
  position: absolute;
  right: 24px;
  bottom: 112px;
  z-index: 12;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 1px solid var(--sb-line);
  background: rgba(15, 20, 32, 0.9);
  color: var(--text);
  font-family: var(--font);
  font-size: 18px;
  font-weight: 800;
  line-height: 1;
  cursor: pointer;
  backdrop-filter: blur(4px);
}
#onboarding-info-btn:hover {
  border-color: rgba(74, 168, 255, 0.65);
  color: var(--accent);
}

#onboarding-panel {
  position: absolute;
  right: 24px;
  bottom: 158px;
  width: min(460px, calc(100vw - 48px));
  max-height: none;
  overflow: visible;
  z-index: 13;
  background: rgba(15, 20, 32, 0.95);
  border: 1px solid var(--sb-line);
  border-radius: 12px;
  padding: 18px 18px 16px;
  backdrop-filter: blur(6px);
  box-shadow: 0 18px 34px rgba(0, 0, 0, 0.35);
}
#onboarding-panel.hidden,
#onboarding-info-btn.hidden {
  display: none;
}
#onboarding-panel h2 {
  font-size: 20px;
  line-height: 1.25;
  margin-bottom: 6px;
}
#onboarding-panel h3 {
  color: var(--accent);
  font-size: 15px;
  margin-top: 14px;
  margin-bottom: 6px;
}
#onboarding-panel p {
  color: var(--text);
  font-size: 13px;
  line-height: 1.45;
}
#onboarding-panel .intro-muted {
  color: var(--text-dim);
}
#onboarding-actions {
  margin-top: 14px;
  display: flex;
  justify-content: flex-end;
}
#onboarding-play-btn {
  background: var(--accent);
  border: 1px solid var(--accent);
  color: #06101f;
  font-family: var(--font);
  font-size: 13px;
  font-weight: 800;
  border-radius: 8px;
  padding: 8px 14px;
  cursor: pointer;
}
#onboarding-play-btn:hover {
  filter: brightness(1.08);
}

@media (max-height: 760px) {
  #onboarding-panel {
    max-height: calc(100vh - 190px);
    overflow: auto;
  }
}