.test-container {
  min-height: 400px;
}

.test-container-fullscreen {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #f5f5f5;
  z-index: 1500;
  overflow: hidden;
  padding: 0;
  display: flex;
  flex-direction: column;
}


.test-duration-selection {
  text-align: center;
}

.test-duration-selection h2 {
  color: #2c3e50;
  margin-bottom: 2rem;
}

.test-error {
  background-color: #f8d7da;
  color: #721c24;
  padding: 1rem;
  border-radius: 4px;
  margin-bottom: 1rem;
}

.duration-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.duration-button {
  background-color: #3498db;
  color: white;
  border: none;
  padding: 1.5rem;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.2s, transform 0.1s;
  text-align: center;
}

.duration-button:hover:not(:disabled) {
  background-color: #2980b9;
  transform: translateY(-2px);
}

.duration-button:disabled {
  background-color: #bdc3c7;
  cursor: not-allowed;
}

.duration-label {
  font-size: 1.25rem;
  font-weight: bold;
  margin-bottom: 0.5rem;
}

.duration-count {
  font-size: 0.9rem;
  opacity: 0.9;
}

.test-loading {
  margin-top: 2rem;
  text-align: center;
  color: #666;
}

.test-screen {
  min-height: 100vh;
  padding-top: 3rem;
}

.test-progress {
  margin-top: 1rem;
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

.test-progress .progress-text {
  font-size: 1.5rem;
  color: #2c3e50;
  font-weight: 500;
}

.test-card-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 300px;
  perspective: 1000px;
}

.test-card {
  width: 100%;
  max-width: 400px;
  height: 500px;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.6s;
  cursor: pointer;
}

.test-card.flipped {
  transform: rotateY(180deg);
}

.test-card-front,
.test-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
}

.test-card-front {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.test-card-back {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  color: white;
  transform: rotateY(180deg);
}

.test-card-content {
  padding: 2rem;
  text-align: center;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
}

.test-word {
  font-size: 3rem;
  font-weight: bold;
  margin-bottom: 0;
}

.test-translation {
  font-size: 2.5rem;
  margin-bottom: 0;
}

.test-card-hint {
  font-size: 0.9rem;
  opacity: 0.8;
  margin-top: 2rem;
}

.test-card-actions {
  display: flex;
  gap: 1rem;
  width: 100%;
  justify-content: center;
  margin-top: auto;
  padding-top: 2rem;
  position: absolute;
  bottom: 2rem;
  left: 0;
  right: 0;
}

.test-action-button {
  padding: 1.25rem 2.5rem;
  border: none;
  border-radius: 8px;
  font-size: 1.25rem;
  font-weight: bold;
  cursor: pointer;
  transition: transform 0.1s, opacity 0.2s;
  min-width: 160px;
}

.test-action-button:hover {
  transform: scale(1.05);
}

.test-action-button:active {
  transform: scale(0.95);
}

.success-button {
  background-color: #27ae60;
  color: white;
}

.success-button:hover {
  background-color: #229954;
}

.failure-button {
  background-color: #e74c3c;
  color: white;
}

.failure-button:hover {
  background-color: #c0392b;
}

.test-results {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: 0;
  box-sizing: border-box;
  position: relative;
  overflow: hidden;
}

.results-stats {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
  align-content: start;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 4rem 1rem 1rem 1rem;
  box-sizing: border-box;
  width: 100%;
  min-height: 0;
}

.result-item {
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 1rem;
  background: #fafafa;
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
}

.result-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.result-item:last-child {
  margin-bottom: 2rem;
}

.result-word-content {
  flex: 1;
}

.result-word-header {
  margin-bottom: 0.75rem;
}

.result-word {
  font-size: 1.25rem;
  font-weight: bold;
  color: #2c3e50;
  margin: 0;
}

.result-translation {
  font-size: 1rem;
  color: #34495e;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.result-stats {
  display: flex;
  align-items: center;
  font-size: 1.5rem;
  font-weight: bold;
  white-space: nowrap;
}

.result-stat-success {
  color: #3498db;
}

.result-stat-separator {
  color: #7f8c8d;
  margin: 0 0.25rem;
}

.result-stat-failure {
  color: #e74c3c;
}

.test-preview {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: 0;
  box-sizing: border-box;
  position: relative;
  overflow: hidden;
}

.preview-stats {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
  align-content: start;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 4rem 1rem 1rem 1rem;
  box-sizing: border-box;
  width: 100%;
  min-height: 0;
}

.preview-item {
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 1rem;
  background: #fafafa;
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  align-self: start;
}

.preview-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.preview-word-content {
  flex: 1;
}

.preview-word-header {
  margin-bottom: 0.75rem;
}

.preview-word {
  font-size: 1.25rem;
  font-weight: bold;
  color: #2c3e50;
  margin: 0;
}

.preview-translation {
  font-size: 1rem;
  color: #34495e;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.preview-stats-numbers {
  display: flex;
  align-items: center;
  font-size: 1.5rem;
  font-weight: bold;
  white-space: nowrap;
}

.preview-stat-success {
  color: #3498db;
}

.preview-stat-separator {
  color: #7f8c8d;
  margin: 0 0.25rem;
}

.preview-stat-failure {
  color: #e74c3c;
}

.preview-actions {
  display: flex;
  justify-content: center;
  padding: 1rem;
  flex-shrink: 0;
  background-color: #f5f5f5;
  border-top: 1px solid #e0e0e0;
  position: relative;
  z-index: 10;
}

.test-start-button {
  padding: 1.25rem 3rem;
  background-color: #27ae60;
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1.5rem;
  font-weight: bold;
  cursor: pointer;
  transition: transform 0.1s, background-color 0.2s;
  min-width: 200px;
}

.test-start-button:hover {
  background-color: #229954;
  transform: scale(1.05);
}

.test-start-button:active {
  transform: scale(0.95);
}

.results-actions {
  display: flex;
  justify-content: center;
  padding: 1rem;
  flex-shrink: 0;
  background-color: #f5f5f5;
  border-top: 1px solid #e0e0e0;
  position: relative;
  z-index: 10;
}

.test-finish-button {
  padding: 1.25rem 3rem;
  background-color: #3498db;
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1.5rem;
  font-weight: bold;
  cursor: pointer;
  transition: transform 0.1s, background-color 0.2s;
  min-width: 200px;
}

.test-finish-button:hover {
  background-color: #2980b9;
  transform: scale(1.05);
}

.test-finish-button:active {
  transform: scale(0.95);
}