* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, "Malgun Gothic", sans-serif;
  color: #1f2933;
  background: #f2f5f8;
}

.workspace-panel {
  min-height: 100vh;
  width: min(92%, 640px);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 18px;
}

h1 {
  margin: 0;
  font-size: 40px;
  font-weight: 700;
}

.guide-message,
.result-message {
  margin: 0;
  font-size: 18px;
  line-height: 1.6;
}

.connect-button {
  min-width: 140px;
  padding: 12px 20px;
  border: 0;
  border-radius: 8px;
  color: #ffffff;
  background: #2563eb;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
}

.connect-button:hover,
.connect-button:focus-visible {
  background: #1d4ed8;
}

.connect-button:focus-visible {
  outline: 3px solid #93c5fd;
  outline-offset: 3px;
}

.result-message {
  min-height: 30px;
  color: #166534;
  font-weight: 700;
}

@media (max-width: 480px) {
  h1 {
    font-size: 32px;
  }

  .guide-message,
  .result-message {
    font-size: 16px;
  }
}