/* Component styles */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.5;
  border-radius: var(--border-radius);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--bg-tertiary);
  border-color: var(--border-color-dark);
}

.btn-back {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

/* Header Component */
.header-container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-lg);
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.header-title {
  font-size: 1.5rem;
  margin: 0;
}

.header-title a {
  color: var(--text-primary);
  text-decoration: none;
}

.header-title a:hover {
  color: var(--color-primary);
}

.header-stats {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.progress-badge {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  padding: 0.375rem 0.75rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: 0.875rem;
}

.progress-percent {
  color: var(--text-secondary);
  font-weight: 600;
}

.header-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.breadcrumb-link {
  color: var(--text-secondary);
  font-size: 0.875rem;
  padding: 0.25rem 0.5rem;
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
}

.breadcrumb-link:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.breadcrumb-link.active {
  color: var(--text-primary);
  font-weight: 600;
}

.breadcrumb-separator {
  color: var(--text-muted);
  user-select: none;
}

.nav-links {
  display: flex;
  gap: var(--spacing-md);
}

.nav-link {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

/* Topic List View */
.topic-list-view {
  width: 100%;
}

.view-header {
  margin-bottom: var(--spacing-xl);
}

.view-header h2 {
  margin-bottom: var(--spacing-sm);
}

.view-description {
  color: var(--text-secondary);
  font-size: 1.125rem;
}

.search-bar {
  margin-bottom: var(--spacing-xl);
}

.search-input {
  width: 100%;
  max-width: 500px;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-lg);
}

.no-results {
  text-align: center;
  color: var(--text-muted);
  padding: var(--spacing-2xl);
  grid-column: 1 / -1;
}

/* Topic Card */
.topic-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.topic-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.topic-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.topic-number {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
}

.topic-status {
  padding: 0.25rem 0.625rem;
  border-radius: var(--border-radius);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.topic-status.not-started {
  background-color: var(--color-gray-100);
  color: var(--color-gray-600);
}

.topic-status.in-progress {
  background-color: var(--color-warning-light);
  color: var(--color-warning);
}

.topic-status.completed {
  background-color: var(--color-success-light);
  color: var(--color-success);
}

.topic-title {
  font-size: 1.25rem;
  margin: 0;
  color: var(--text-primary);
}

.topic-scenario {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.5;
  margin: 0;
}

.topic-meta {
  display: flex;
  gap: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.meta-label {
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 600;
}

.meta-value {
  color: var(--text-primary);
  font-weight: 600;
  font-size: 1rem;
}

.progress-bar-container {
  width: 100%;
  height: 6px;
  background-color: var(--color-gray-200);
  border-radius: 3px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background-color: var(--color-primary);
  transition: width var(--transition-slow);
}

.topic-card-btn {
  width: 100%;
  margin-top: auto;
}

/* Topic Detail View */
.topic-detail-view {
  width: 100%;
}

.topic-header-main {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.topic-number-badge {
  background-color: var(--color-primary);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: 0.875rem;
}

.topic-scenario-box {
  background-color: var(--color-primary-light);
  border-left: 4px solid var(--color-primary);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-xl);
}

.topic-scenario-box h3 {
  font-size: 1rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary);
}

.topic-scenario-box p {
  margin: 0;
  color: var(--text-primary);
  line-height: 1.6;
}

.questions-list {
  background-color: var(--bg-primary);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  border: 1px solid var(--border-color);
}

.questions-list-header {
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
}

.questions-list-header h3 {
  margin: 0;
  color: var(--text-primary);
}

/* Question Item */
.question-item {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  cursor: pointer;
  transition: all var(--transition-base);
}

.question-item:hover {
  border-color: var(--color-primary);
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}

.question-item.completed-correct {
  border-left: 4px solid var(--color-success);
}

.question-item.completed-incorrect {
  border-left: 4px solid var(--color-error);
}

.question-item.completed-reviewed {
  border-left: 4px solid var(--color-primary);
}

.question-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.question-item-meta {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.question-number {
  font-weight: 600;
  color: var(--text-primary);
}

.question-type-badge {
  padding: 0.25rem 0.625rem;
  border-radius: var(--border-radius);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.question-type-badge.mc {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

.question-type-badge.essay {
  background-color: var(--color-warning-light);
  color: var(--color-warning);
}

.question-status {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.status-icon {
  font-size: 1.25rem;
}

.status-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.question-prompt-preview {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.question-item-btn {
  width: 100%;
}

/* Question View */
.question-view {
  width: 100%;
}

.question-nav-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  gap: var(--spacing-md);
}

.question-nav-info {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.25rem;
}

.topic-title-small {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.question-counter {
  color: var(--text-primary);
  font-weight: 600;
  font-size: 1rem;
}

.scenario-reminder {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.scenario-reminder details summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--color-primary);
  padding: var(--spacing-sm);
  user-select: none;
}

.scenario-reminder details summary:hover {
  text-decoration: underline;
}

.scenario-reminder details[open] summary {
  margin-bottom: var(--spacing-md);
}

.scenario-reminder p {
  margin: 0;
  padding: 0 var(--spacing-sm);
  color: var(--text-primary);
  line-height: 1.6;
}

.question-navigation {
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
}

/* Question Card */
.question-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

.question-header {
  margin-bottom: var(--spacing-lg);
}

.question-label {
  display: inline-block;
  background-color: var(--color-gray-100);
  color: var(--text-secondary);
  padding: 0.375rem 0.75rem;
  border-radius: var(--border-radius);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
}

.question-prompt {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.6;
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-lg);
  background-color: var(--bg-secondary);
  border-radius: var(--border-radius);
}

/* Multiple Choice Question */
.mc-question .question-options {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.mc-question .option {
  background-color: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.mc-question .option:hover:not(.correct):not(.incorrect) {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.mc-question .option.correct {
  background-color: var(--color-success-light);
  border-color: var(--color-success);
}

.mc-question .option.incorrect {
  background-color: var(--color-error-light);
  border-color: var(--color-error);
}

.mc-question .option-label {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  cursor: pointer;
  width: 100%;
}

.mc-question .option-label input[type="radio"] {
  margin-top: 0.25rem;
  flex-shrink: 0;
  cursor: pointer;
}

.mc-question .option-label input[type="radio"]:disabled {
  cursor: default;
}

.mc-question .option-key {
  font-weight: 700;
  color: var(--text-primary);
  flex-shrink: 0;
}

.mc-question .option-text {
  flex: 1;
  color: var(--text-primary);
  line-height: 1.6;
}

.mc-question .option-icon {
  font-size: 1.25rem;
  margin-left: auto;
  flex-shrink: 0;
}

.mc-question .question-actions {
  display: flex;
  justify-content: flex-end;
}

.mc-question .answer-feedback {
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.mc-question .correct-feedback {
  background-color: var(--color-success-light);
  border: 1px solid var(--color-success);
}

.mc-question .incorrect-feedback {
  background-color: var(--color-error-light);
  border: 1px solid var(--color-error);
}

.mc-question .feedback-text {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0;
}

.mc-question .correct-feedback .feedback-text {
  color: var(--color-success);
}

.mc-question .incorrect-feedback .feedback-text {
  color: var(--color-error);
}

/* Essay Question */
.essay-question .essay-input-section {
  margin-bottom: var(--spacing-xl);
}

.essay-question .essay-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-sm) 0;
}

.essay-question .word-count {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.essay-question .word-count strong {
  color: var(--text-primary);
  font-weight: 600;
}

.essay-question .auto-save-status {
  color: var(--text-muted);
  font-size: 0.75rem;
  font-style: italic;
}

.essay-question .essay-textarea {
  width: 100%;
  padding: var(--spacing-md);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  resize: vertical;
  min-height: 300px;
  transition: border-color var(--transition-fast);
}

.essay-question .essay-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.essay-question .question-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
}

.essay-question .review-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background-color: var(--color-success-light);
  color: var(--color-success);
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  font-weight: 600;
}

/* Question Explanation */
.question-explanation {
  background-color: var(--bg-secondary);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.question-explanation h3 {
  color: var(--color-primary);
  font-size: 1.125rem;
  margin-bottom: var(--spacing-md);
}

.explanation-text {
  color: var(--text-primary);
  line-height: 1.7;
  white-space: pre-wrap;
}