body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1f2933, #111827);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #111827;
}

#container {
  background-color: #eff6ff;
  border-radius: 16px;
  text-align: center;
  width: 90%;
  max-width: 480px;
  margin: 16px;
  padding: 24px 20px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(15, 23, 42, 0.15);
}


h1 {
  margin-top: 0;
  margin-bottom: 12px;
  font-size: 1.8rem;
  color: #111827;
}

#score {
  margin-top: 8px;
  font-size: 0.95rem;
  color: #374151;
}

#buttons,
#results,
#display-winner {
  margin-top: 16px;
}

#buttons {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.human-choice-buttons {
  flex: 1;
  aspect-ratio: 3 / 1;
  border: none;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  background: #2563eb;
  color: #eff6ff;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.4);
  transition: transform 0.1s ease, box-shadow 0.1s ease, background 0.1s ease;
}

.human-choice-buttons:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(37, 99, 235, 0.5);
  background: #1d4ed8;
}

.human-choice-buttons:active:not(:disabled) {
  transform: translateY(1px);
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.3);
}

.human-choice-buttons:disabled {
  background: #9ca3af;
  cursor: default;
  box-shadow: none;
}

#results {
  font-size: 1rem;
  background: #dbeafe;
  border-radius: 12px;
  padding: 16px;
  min-height: 90px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  justify-content: center;
}

#human-choice,
#computer-choice {
  font-weight: 500;
  color: #1f2933;
}

#round-result {
  margin-top: 4px;
  font-size: 1.05rem;
  font-weight: 600;
}

#display-winner {
  font-size: 1.4rem;
  font-weight: 800;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  min-height: 40px;
  color: #111827;
}

#display-winner button {
  font-size: 0.95rem;
  margin-top: 4px;
  padding: 8px 16px;
  border-radius: 999px;
  border: none;
  background: #10b981;
  color: #ecfdf5;
  cursor: pointer;
  font-weight: 600;
  box-shadow: 0 4px 10px rgba(16, 185, 129, 0.4);
  transition: transform 0.1s ease, box-shadow 0.1s ease, background 0.1s ease;
}

#display-winner button:hover {
  background: #059669;
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(16, 185, 129, 0.5);
}

#display-winner button:active {
  transform: translateY(1px);
  box-shadow: 0 2px 6px rgba(16, 185, 129, 0.3);
}

#container p {
  margin: 0;
  font-size: 0.95rem;
  color: #4b5563;
}