body {
  margin: 0;
  overflow: hidden;
  font-family: "Inter", sans-serif;
  background-color: #0d1117;
  color: #ffffff;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}
canvas {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 1rem;
}
.ui-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1rem; /* Adjusted for smaller screens first */
  color: #ffffff;
  z-index: 10;
}
/* Tailwind's default 'md:' breakpoint is typically 768px.
         We can override for larger screens to use a larger font-size if desired */
@media (min-width: 768px) {
  .ui-container {
    font-size: 1.25rem; /* Larger font for medium and larger screens */
  }
}

.score-display,
.high-score-display,
.time-display,
.pause-button {
  background: rgba(17, 24, 39, 0.7);
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  cursor: pointer;
  transition: background 0.2s;
}
.pause-button {
  cursor: pointer;
}
.pause-button:hover {
  background: rgba(45, 212, 191, 0.7);
}
.ui-left,
.ui-right {
  display: flex;
  gap: 0.75rem; /* Slightly smaller gap for mobile */
}
@media (min-width: 768px) {
  .ui-left,
  .ui-right {
    gap: 1rem; /* Restore larger gap for desktop */
  }
}

.overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  z-index: 20;
}
.start-button,
.restart-button,
.resume-button {
  padding: 0.8rem 2rem; /* Slightly smaller padding for smaller buttons */
  margin-top: 1.2rem;
  font-size: 1.1rem; /* Smaller font for buttons on mobile */
  font-weight: bold;
  color: #1a202c;
  background: linear-gradient(135deg, #38bdf8, #2dd4bf);
  border: none;
  border-radius: 9999px;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 15px rgba(45, 212, 191, 0.4);
}
@media (min-width: 768px) {
  .start-button,
  .restart-button,
  .resume-button {
    padding: 1rem 2.5rem; /* Restore larger padding for desktop */
    margin-top: 1.5rem;
    font-size: 1.25rem; /* Restore larger font for desktop */
  }
}

.start-button:hover,
.restart-button:hover,
.resume-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(45, 212, 191, 0.6);
}
.start-button:active,
.restart-button:active,
.resume-button:active {
  transform: translateY(0);
  box-shadow: 0 2px 5px rgba(45, 212, 191, 0.2);
}
/* Adjust text sizes for responsiveness */
.text-4xl {
  font-size: 2.25rem; /* Default for very small screens */
}
.text-lg {
  font-size: 1.125rem;
}
.text-xl {
  font-size: 1.25rem;
}

@media (min-width: 768px) {
  .text-4xl {
    font-size: 2.5rem;
  }
  .md\:text-6xl {
    font-size: 3.75rem; /* Standard Tailwind 6xl */
  }
  .md\:text-xl {
    font-size: 1.25rem;
  }
  .md\:text-2xl {
    font-size: 1.5rem;
  }
}