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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #05060f;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* evening sky: deep indigo overhead fading to a dusky horizon glow */
#sky {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  background:
    radial-gradient(120% 80% at 50% 118%, rgba(94, 52, 88, 0.55) 0%, rgba(40, 24, 60, 0.0) 55%),
    linear-gradient(180deg, #05060f 0%, #0a0a1e 38%, #12102b 70%, #1c1330 100%);
}

/* cartoon rocket overlay: crisp 2D silhouettes drawn above the particle glow */
#rockets {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  pointer-events: none;
  z-index: 1;
}

/* a soft scatter of static stars behind everything */
.sky-stars {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(1px 1px at 12% 22%, rgba(255,255,255,0.7), transparent),
    radial-gradient(1px 1px at 28% 12%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1.5px 1.5px at 47% 30%, rgba(255,255,255,0.6), transparent),
    radial-gradient(1px 1px at 63% 8%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1px 1px at 78% 24%, rgba(255,255,255,0.7), transparent),
    radial-gradient(1.5px 1.5px at 88% 14%, rgba(255,255,255,0.55), transparent),
    radial-gradient(1px 1px at 36% 40%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 70% 44%, rgba(255,255,255,0.45), transparent),
    radial-gradient(1px 1px at 6% 48%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 92% 40%, rgba(255,255,255,0.5), transparent);
  opacity: 0.85;
}

.panel {
  position: fixed;
  top: 1.1rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.55rem 0.85rem;
  background: rgba(16, 14, 34, 0.62);
  border: 1px solid rgba(180, 160, 220, 0.16);
  border-radius: 0.85rem;
  backdrop-filter: blur(9px);
  -webkit-backdrop-filter: blur(9px);
  box-shadow: 0 6px 26px rgba(0, 0, 0, 0.45);
  z-index: 10;
  max-width: 92vw;
}

.panel-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: #e8dffb;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.phrase-input {
  min-width: 6rem;
  flex: 1 1 12rem;
  padding: 0.45rem 0.7rem;
  font-size: 0.95rem;
  color: #f4eeff;
  background: rgba(8, 8, 20, 0.7);
  border: 1px solid rgba(180, 160, 220, 0.22);
  border-radius: 0.55rem;
  outline: none;
}
.phrase-input:focus {
  border-color: rgba(190, 130, 255, 0.6);
  box-shadow: 0 0 0 2px rgba(190, 130, 255, 0.18);
}

.btn {
  padding: 0.45rem 0.95rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: #120a20;
  border: none;
  border-radius: 0.55rem;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.08s ease, filter 0.15s ease;
}
.btn-go {
  background: linear-gradient(135deg, #ffd166, #ff7ab0 60%, #b388ff);
}
.btn:hover { filter: brightness(1.08); }
.btn:active { transform: scale(0.96); }

.loop-toggle {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.85rem;
  color: #cfc3ec;
  user-select: none;
  cursor: pointer;
  white-space: nowrap;
}
.loop-toggle input { cursor: pointer; }

.hint {
  position: fixed;
  bottom: 0.9rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.78rem;
  color: rgba(210, 198, 236, 0.5);
  letter-spacing: 0.03em;
  pointer-events: none;
  z-index: 10;
}

@media (max-width: 560px) {
  .panel { gap: 0.5rem; padding: 0.5rem 0.6rem; }
  .panel-title { display: none; }
}