/* src/styles.css */
body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: #333;
  background-color: #f5f5f5;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Oxygen, Ubuntu, Cantarell, Fira Sans, Droid Sans, Helvetica Neue, sans-serif;
}

.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.app-header {
  color: #fff;
  text-align: center;
  background-color: #282c34;
  padding: 20px;
}

.app-header h1 {
  margin: 0;
  font-size: 2rem;
}

.app-header p {
  opacity: .8;
  margin: 10px 0 0;
}

.navigation {
  background-color: #333;
  padding: 10px 0;
}

.navigation ul {
  list-style-type: none;
  display: flex;
  justify-content: center;
  gap: 20px;
  margin: 0;
  padding: 0;
}

.navigation li button {
  color: #fff;
  cursor: pointer;
  background: none;
  border: none;
  border-radius: 4px;
  padding: 10px 15px;
  transition: background-color .3s;
  font-size: 1rem;
}

.navigation li button:hover {
  background-color: #555;
}

.navigation li button.active {
  background-color: #007bff;
}

.app-main {
  flex: 1;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.mental-rotation-demo, .vviq-assessment, .mutilated-checkerboard {
  background: #fff;
  border-radius: 8px;
  margin-bottom: 20px;
  padding: 20px;
  box-shadow: 0 2px 10px #0000001a;
}

.mental-rotation-demo h2, .vviq-assessment h2, .mutilated-checkerboard h2 {
  color: #282c34;
  margin-top: 0;
}

.description {
  color: #666;
  margin-bottom: 20px;
  line-height: 1.5;
}

.demo-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  align-items:  center;
  gap: 20px;
  margin: 20px 0;
}

.shape-container {
  text-align: center;
  padding: 10px;
}

.shape-container h3 {
  color: #282c34;
  margin-top: 0;
  margin-bottom: 10px;
}

.answer-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin: 20px 0;
}

.answer-btn {
  cursor: pointer;
  color: #fff;
  background-color: #007bff;
  border: none;
  border-radius: 4px;
  padding: 12px 24px;
  transition: background-color .3s;
  font-size: 1rem;
}

.answer-btn:hover:not(:disabled) {
  background-color: #0056b3;
}

.answer-btn:disabled {
  cursor: not-allowed;
  background-color: #ccc;
}

.result-section {
  text-align: center;
  margin: 20px 0;
}

.correct {
  color: green;
  font-size: 1.2rem;
  font-weight: bold;
}

.incorrect {
  color: red;
  font-size: 1.2rem;
  font-weight: bold;
}

.next-btn {
  cursor: pointer;
  color: #fff;
  background-color: #28a745;
  border: none;
  border-radius: 4px;
  margin-top: 10px;
  padding: 10px 20px;
  font-size: 1rem;
}

.next-btn:hover {
  background-color: #218838;
}

.explanation {
  background-color: #f8f9fa;
  border-left: 4px solid #007bff;
  border-radius: 8px;
  margin-top: 30px;
  padding: 20px;
}

.explanation h3 {
  color: #282c34;
  margin-top: 0;
}

.explanation p {
  margin-bottom: 15px;
  line-height: 1.6;
}

.assessment-container {
  display: flex;
  flex-direction: column;
  align-items:  center;
}

.question-section {
  width: 100%;
  max-width: 600px;
  margin-bottom: 30px;
}

.question-text {
  margin: 15px 0;
  font-size: 1.1rem;
  font-weight: 500;
}

.category {
  color: #666;
  margin-bottom: 20px;
  font-style: italic;
}

.rating-options {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 20px 0;
}

.rating-label {
  display: flex;
  cursor: pointer;
  background-color: #f8f9fa;
  border: 1px solid #ddd;
  border-radius: 4px;
  align-items:  center;
  gap: 5px;
  padding: 8px 12px;
  transition: all .2s;
}

.rating-label:hover {
  background-color: #e9ecef;
}

.rating-input {
  margin-right: 5px;
}

.navigation-buttons {
  display: flex;
  justify-content: space-between;
  width: 100%;
  max-width: 600px;
  margin-top: 20px;
}

.nav-btn {
  cursor: pointer;
  color: #fff;
  background-color: #007bff;
  border: none;
  border-radius: 4px;
  padding: 10px 20px;
  transition: background-color .3s;
}

.nav-btn:hover:not(:disabled) {
  background-color: #0056b3;
}

.nav-btn:disabled {
  cursor: not-allowed;
  background-color: #ccc;
}

.submit-btn {
  background-color: #28a745;
}

.submit-btn:hover:not(:disabled) {
  background-color: #218838;
}

.results-section {
  text-align: center;
}

.score-display {
  margin: 20px 0;
  font-size: 1.5rem;
}

.interpretation {
  margin: 20px 0;
  font-size: 1.2rem;
  font-weight: bold;
}

.breakdown ul {
  list-style-type: none;
  margin: 20px 0;
  padding: 0;
}

.breakdown li {
  background-color: #e9ecef;
  border-radius: 4px;
  margin: 10px 0;
  padding: 10px;
}

.reset-btn {
  cursor: pointer;
  color: #fff;
  background-color: #6c757d;
  border: none;
  border-radius: 4px;
  margin-top: 20px;
  padding: 10px 20px;
  font-size: 1rem;
}

.reset-btn:hover {
  background-color: #5a6268;
}

.puzzle-info {
  text-align: center;
}

.checkerboard {
  border-collapse: collapse;
  border: 2px solid #333;
  margin: 20px auto;
}

.cell {
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  border: 1px solid #999;
  width: 40px;
  height: 40px;
  transition: background-color .2s;
  font-weight: bold;
}

.cell:hover {
  opacity: .8;
}

.black-cell {
  color: #fff;
  background-color: #333;
}

.white-cell {
  color: #333;
  background-color: #fff;
}

.removed-cell {
  color: #fff;
  background-color: #ff6b6b;
}

.selected-cell {
  color: #fff;
  background-color: #4caf50;
}

.controls {
  margin: 20px 0;
}

.solve-btn, .reset-btn {
  cursor: pointer;
  border: none;
  border-radius: 4px;
  margin: 0 10px;
  padding: 10px 20px;
  transition: background-color .3s;
  font-size: 1rem;
}

.solve-btn {
  color: #fff;
  background-color: #007bff;
}

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

.reset-btn {
  color: #fff;
  background-color: #6c757d;
}

.reset-btn:hover {
  background-color: #5a6268;
}

.hint {
  color: #856404;
  background-color: #fff3cd;
  border: 1px solid #ffeaa7;
  border-radius: 4px;
  margin-top: 20px;
  padding: 15px;
}

.app-footer {
  color: #fff;
  text-align: center;
  background-color: #282c34;
  margin-top: auto;
  padding: 20px;
}

@media (max-width: 768px) {
  .app-main {
    padding: 10px;
  }

  .demo-container {
    flex-direction: column;
  }

  .navigation ul {
    flex-direction: column;
    gap: 5px;
  }

  .navigation li button {
    width: 100%;
  }

  .answer-buttons {
    flex-direction: column;
    align-items:  center;
    gap: 10px;
  }

  .navigation-buttons {
    flex-direction: column;
    gap: 10px;
  }

  .nav-btn {
    width: 100%;
  }
}