@layer galaxy {
  #galaxy-canvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
    cursor: default;
  }

  /* Intro screen */
  .intro-screen {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(ellipse at center, #0d0d2e 0%, #050510 70%);
    z-index: 100;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
  }

  .intro-screen.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }

  .intro-content {
    text-align: center;
    padding: 2rem;
    max-width: 480px;
  }

  .intro-title {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 5vw, 2.6rem);
    color: var(--color-text-primary);
    margin-bottom: 1rem;
    line-height: 1.3;
    text-shadow: 0 0 40px rgba(192, 132, 252, 0.6);
  }

  .intro-subtitle {
    color: var(--color-text-secondary);
    font-size: clamp(0.95rem, 2.5vw, 1.1rem);
    margin-bottom: 2.5rem;
    line-height: 1.6;
  }

  .start-btn {
    display: inline-block;
    padding: 0.875rem 2.25rem;
    background: linear-gradient(135deg, var(--color-accent-purple-dim), var(--color-accent-purple));
    color: #fff;
    border-radius: 50px;
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    box-shadow: 0 0 30px rgba(192, 132, 252, 0.4), 0 4px 16px rgba(0,0,0,0.4);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
  }

  .start-btn:hover {
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 0 50px rgba(192, 132, 252, 0.6), 0 8px 24px rgba(0,0,0,0.4);
  }

  .start-btn:active {
    transform: translateY(0) scale(0.98);
  }

  /* Hint banner */
  .hint-banner {
    position: fixed;
    bottom: 2.25rem;
    left: 1.25rem;
    right: 1.25rem;
    transform: translateY(calc(100% + 3rem));
    background: rgba(15, 15, 46, 0.92);
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    font-size: clamp(0.9rem, 3vw, 1.1rem);
    font-family: var(--font-display);
    letter-spacing: 0.02em;
    padding: 1rem 1.5rem;
    border-radius: 50px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    text-align: center;
    pointer-events: none;
    box-shadow: 0 0 30px rgba(192, 132, 252, 0.15), 0 4px 20px rgba(0,0,0,0.4);
    transition: transform var(--transition-med);
    z-index: 50;
  }

  .hint-banner.visible {
    transform: translateY(0);
  }

  @media (min-width: 600px) {
    .hint-banner {
      left: 50%;
      right: auto;
      transform: translateX(-50%) translateY(calc(100% + 3rem));
      white-space: nowrap;
      width: max-content;
    }

    .hint-banner.visible {
      transform: translateX(-50%) translateY(0);
    }
  }

  /* Seen stars counter + reset button — top right */
  .stars-hud {
    position: fixed;
    top: 1.25rem;
    right: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    z-index: 50;
  }

  .stars-counter {
    background: rgba(15, 15, 46, 0.82);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-family: var(--font-display);
    font-size: 1.35rem;
    letter-spacing: 0.04em;
    padding: 0.5rem 1.1rem;
    border-radius: 50px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    pointer-events: none;
    white-space: nowrap;
    box-shadow: 0 0 20px rgba(192, 132, 252, 0.1), 0 2px 12px rgba(0,0,0,0.3);
  }

  .reset-btn {
    background: rgba(15, 15, 46, 0.82);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: 1.1rem;
    width: 2.4rem;
    height: 2.4rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    cursor: pointer;
    transition: color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: 0 0 20px rgba(192, 132, 252, 0.1), 0 2px 12px rgba(0,0,0,0.3);
    -webkit-tap-highlight-color: transparent;
  }

  .reset-btn:hover {
    color: var(--color-text-primary);
    border-color: rgba(192, 132, 252, 0.4);
  }

  .reset-btn--confirming {
    color: #f87171;
    border-color: rgba(248, 113, 113, 0.5);
    font-size: 0.65rem;
    font-weight: 600;
    font-family: var(--font-body);
    width: auto;
    padding: 0 0.75rem;
    border-radius: 50px;
  }
}