:root {
  --bg-color: #f0f0f0;
  --text-color: #333;
  --primary-color: #4a90e2;
  --secondary-color: #e2e2e2;
  --accent-color: #2c3e50;
}

.dark-mode {
  --bg-color: #2c3e50;
  --text-color: #ecf0f1;
  --primary-color: #3498db;
  --secondary-color: #34495e;
  --accent-color: #e74c3c;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue",
    sans-serif;
  line-height: 1.6;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s, color 0.3s;
}

.container {
  max-width: 600px;
  margin: 2rem auto;
  padding: 2rem;
  background-color: var(--secondary-color);
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

h1 {
  text-align: center;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
}

.password-display {
  display: flex;
  margin-bottom: 1rem;
}

#password {
  flex-grow: 1;
  padding: 0.5rem;
  font-size: 1.2rem;
  border: 2px solid var(--primary-color);
  border-radius: 4px 0 0 4px;
  background-color: var(--bg-color);
  color: var(--text-color);
}

#copy-btn,
#pronounce-btn {
  padding: 0.5rem;
  background-color: var(--primary-color);
  color: white;
  border: none;
  cursor: pointer;
  transition: background-color 0.3s;
}

#copy-btn {
  border-radius: 0 4px 4px 0;
}

#pronounce-btn {
  border-radius: 0;
}

#copy-btn:hover,
#pronounce-btn:hover {
  background-color: var(--accent-color);
}

.options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}

label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

input[type="number"] {
  width: 60px;
  padding: 0.25rem;
}

#generate-btn {
  display: block;
  width: 100%;
  padding: 0.75rem;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 1.1rem;
  cursor: pointer;
  transition: background-color 0.3s;
}

#generate-btn:hover {
  background-color: var(--accent-color);
}

.strength-meter {
  margin-top: 1rem;
}

.strength-bar {
  height: 10px;
  background-color: #ddd;
  border-radius: 5px;
  overflow: hidden;
}

.strength-bar::before {
  content: "";
  display: block;
  height: 100%;
  width: 0;
  transition: width 0.3s, background-color 0.3s;
}

.strength-text {
  display: block;
  text-align: center;
  margin-top: 0.5rem;
  font-weight: bold;
}

.entropy-info {
  margin-top: 1rem;
  text-align: center;
  font-weight: bold;
}

.advanced-options {
  display: flex;
  justify-content: space-between;
  margin-top: 1rem;
}

.advanced-options button {
  padding: 0.5rem 1rem;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.advanced-options button:hover {
  background-color: var(--accent-color);
}

.modal {
  display: none;
  position: fixed;
  z-index: 1;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.4);
}

.modal-content {
  background-color: var(--bg-color);
  margin: 15% auto;
  padding: 20px;
  border: 1px solid var(--primary-color);
  width: 80%;
  max-width: 500px;
  border-radius: 8px;
}

#password-list {
  list-style-type: none;
  margin-bottom: 1rem;
}

#password-list li {
  margin-bottom: 0.5rem;
  padding: 0.5rem;
  background-color: var(--secondary-color);
  border-radius: 4px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

footer {
  text-align: center;
  margin-top: 2rem;
  padding: 1rem;
  background-color: var(--secondary-color);
}

footer a {
  color: var(--primary-color);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

#language-select {
  margin-left: 1rem;
  padding: 0.25rem;
  background-color: var(--bg-color);
  color: var(--text-color);
  border: 1px solid var(--primary-color);
  border-radius: 4px;
}

@media (max-width: 600px) {
  .container {
    margin: 1rem;
    padding: 1rem;
  }

  .options {
    grid-template-columns: 1fr;
  }

  .advanced-options {
    flex-direction: column;
    gap: 0.5rem;
  }
}