:root {
  --primary-color: #007bff;
  --secondary-color: #6c757d;
  --success-color: #28a745;
  --background-color: #f8f9fa;
  --border-color: #dee2e6;
  --text-color: #212529;
}

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

body {
  width: 350px;
  min-height: 400px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
}

.popup-container {
  padding: 20px;
}

h1 {
  font-size: 18px;
  margin-bottom: 10px;
  color: var(--primary-color);
}

h2 {
  font-size: 16px;
  margin-bottom: 15px;
  color: var(--text-color);
}

h3 {
  font-size: 14px;
  margin-bottom: 10px;
  color: var(--text-color);
}

.counter-section {
  margin-bottom: 20px;
  padding: 15px;
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.counter-display {
  text-align: center;
  margin: 15px 0;
}

.count {
  font-size: 24px;
  font-weight: bold;
  color: var(--primary-color);
}

.counter-controls {
  display: flex;
  gap: 10px;
  justify-content: center;
}

.btn {
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  text-align: center;
  border: 1px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
}

.btn-primary {
  color: white;
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-primary:hover {
  background-color: #0056b3;
}

.btn-secondary {
  color: white;
  background-color: var(--secondary-color);
  border-color: var(--secondary-color);
}

.btn-secondary:hover {
  background-color: #545b62;
}

.btn-reset {
  color: var(--text-color);
  background-color: white;
  border-color: var(--border-color);
}

.btn-reset:hover {
  background-color: var(--background-color);
}

.info-section {
  margin-bottom: 20px;
  padding: 15px;
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.info-item {
  display: flex;
  justify-content: space-between;
  margin-bottom: 5px;
  font-size: 14px;
}

.info-item strong {
  color: var(--text-color);
}

.info-item span {
  color: var(--secondary-color);
}