:root {
  --background-color-light: #f4f4f4;
  --text-color-light: #333;
  --header-color-light: #0056b3;
  --lotto-card-bg-light: #fff;
  --lotto-card-border-light: #ddd;
  --lotto-number-bg-light: #007bff;
  --lotto-number-color-light: white;
  --button-generate-bg-light: #28a745;
  --button-generate-hover-bg-light: #218838;
  --button-toggle-bg-light: #6c757d;
  --button-toggle-hover-bg-light: #5a6268;
  --box-shadow-light: rgba(0, 0, 0, 0.1);
  --box-shadow-lotto-number-light: rgba(0, 0, 0, 0.2);

  --background-color-dark: #2c2c2c;
  --text-color-dark: #f4f4f4;
  --header-color-dark: #81c784;
  --lotto-card-bg-dark: #3a3a3a;
  --lotto-card-border-dark: #555;
  --lotto-number-bg-dark: #4caf50;
  --lotto-number-color-dark: white;
  --button-generate-bg-dark: #4caf50;
  --button-generate-hover-bg-dark: #43a047;
  --button-toggle-bg-dark: #90a4ae;
  --button-toggle-hover-bg-dark: #78909c;
  --box-shadow-dark: rgba(0, 0, 0, 0.3);
  --box-shadow-lotto-number-dark: rgba(0, 0, 0, 0.4);
}

body {
  font-family: Arial, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  margin: 0;
  background-color: var(--background-color-light);
  color: var(--text-color-light);
  transition: background-color 0.3s ease, color 0.3s ease;
}

html[data-theme='dark'] body {
  background-color: var(--background-color-dark);
  color: var(--text-color-dark);
}

h1 {
  color: var(--header-color-light);
  margin-bottom: 20px;
  transition: color 0.3s ease;
}

html[data-theme='dark'] h1 {
  color: var(--header-color-dark);
}

#lotto-numbers {
  display: flex;
  gap: 10px;
  margin-top: 30px;
  margin-bottom: 30px;
  padding: 20px;
  border: 2px solid var(--lotto-card-border-light);
  border-radius: 10px;
  background-color: var(--lotto-card-bg-light);
  box-shadow: 0 4px 8px var(--box-shadow-light);
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

html[data-theme='dark'] #lotto-numbers {
  border: 2px solid var(--lotto-card-border-dark);
  background-color: var(--lotto-card-bg-dark);
  box-shadow: 0 4px 8px var(--box-shadow-dark);
}

.lotto-number {
  background-color: var(--lotto-number-bg-light);
  color: var(--lotto-number-color-light);
  border-radius: 50%;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5em;
  font-weight: bold;
  box-shadow: 0 2px 4px var(--box-shadow-lotto-number-light);
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

html[data-theme='dark'] .lotto-number {
  background-color: var(--lotto-number-bg-dark);
  color: var(--lotto-number-color-dark);
  box-shadow: 0 2px 4px var(--box-shadow-lotto-number-dark);
}

button {
  padding: 12px 25px;
  font-size: 1.1em;
  color: white;
  background-color: var(--button-generate-bg-light);
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s ease;
  margin: 5px; /* Added for spacing between buttons */
}

button:hover {
  background-color: var(--button-generate-hover-bg-light);
}

#theme-toggle {
  background-color: var(--button-toggle-bg-light);
}

#theme-toggle:hover {
  background-color: var(--button-toggle-hover-bg-light);
}

html[data-theme='dark'] button {
  background-color: var(--button-generate-bg-dark);
}

html[data-theme='dark'] button:hover {
  background-color: var(--button-generate-hover-bg-dark);
}

html[data-theme='dark'] #theme-toggle {
  background-color: var(--button-toggle-bg-dark);
}

html[data-theme='dark'] #theme-toggle:hover {
  background-color: var(--button-toggle-hover-bg-dark);
}