/* Quiz Whiz - UI Components | Shared UI components including modals, toasts, cards, and interactive elements used across multiple pages */

/* Empty State Styles */
.no-flashcards {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 4rem 2rem;
    background: var(--surface-color);
    border-radius: var(--border-radius);
    border: 2px dashed var(--border-color);
    margin: 2rem 0;
    min-height: 300px;
}

.no-flashcards i {
    font-size: 4rem;
    color: var(--text-secondary);
    /* margin-bottom: 1.5rem; */
    opacity: 0.6;
}

.no-flashcards h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.no-flashcards p {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 400px;
}

.no-flashcards .btn {
    margin-top: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 8px;
    box-shadow: var(--shadow-light);
    transition: all 0.2s ease;
    background: var(--primary-color);
    border: none;
    color: white;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.no-flashcards .btn i {
    font-size: 0.75rem;
    opacity: 0.9;
}

.no-flashcards .btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-medium);
    background: var(--primary-dark, #5856eb);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 100px;
    right: 20px;
    z-index: 1001;
    display: flex;
    flex-direction: column;
    gap: 12px;
    pointer-events: none;
}

.toast {
    background: var(--card-color);
    color: var(--text-primary);
    padding: 1rem 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-heavy);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--primary-color);
    min-width: 320px;
    max-width: 400px;
    animation: slideInRight 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    pointer-events: auto;
    backdrop-filter: blur(10px);
    transform: translateX(0);
    opacity: 1;
    transition: all 0.3s ease;
}

.toast.show {
    transform: translateX(0);
    opacity: 1;
}

.toast:not(.show) {
    transform: translateX(100%);
    opacity: 0;
}

.toast.toast-success {
    border-left-color: var(--success-color, #10b981);
    background: var(--card-color);
}

.toast.toast-error {
    border-left-color: var(--error-color, #ef4444);
    background: var(--card-color);
}

.toast.toast-warning {
    border-left-color: var(--warning-color, #f59e0b);
    background: var(--card-color);
}

.toast.toast-info {
    border-left-color: var(--info-color, #3b82f6);
    background: var(--card-color);
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.toast-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
}

.toast-success .toast-icon {
    color: var(--success-color, #10b981);
}

.toast-error .toast-icon {
    color: var(--error-color, #ef4444);
}

.toast-warning .toast-icon {
    color: var(--warning-color, #f59e0b);
}

.toast-info .toast-icon {
    color: var(--info-color, #3b82f6);
}

.toast-message {
    flex: 1;
    font-weight: 500;
    line-height: 1.4;
}

.toast-close {
    position: absolute;
    top: 8px;
    right: 8px;
    background: none;
    border: none;
    font-size: 1.1rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 4px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.toast-close:hover {
    color: var(--text-primary);
    background: var(--surface-color);
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    box-sizing: border-box;
}

.modal-content {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideInUp 0.3s ease;
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-direction: row;
}

.modal-header h2 {
    margin: 0;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-header .close {
    font-size: 1.5rem;
    font-weight: bold;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition);
    padding: 0.25rem;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-header .close:hover {
    color: var(--text-color);
    background-color: var(--border-color);
}

.modal-body {
    padding: 1.5rem;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
}

/* Warning Message Styles */
.warning-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    margin-top: 1.5rem;
}

.warning-message p {
    margin: 0 0 1rem 0;
    color: var(--text-primary);
    line-height: 1.5;
}

.warning-message p:last-child {
    margin-bottom: 0;
}

.warning-message ul {
    margin: 1rem 0;
    padding-left: 1.5rem;
    color: var(--text-primary);
}

.warning-message li {
    margin: 0.5rem 0;
    line-height: 1.4;
}

.warning-message strong {
    color: var(--danger-color, #ef4444);
    font-weight: 600;
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
    margin: 1rem 0;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 4px;
    transition: width 0.3s ease;
    width: 0%;
}

/* Loading Spinner */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Content Management Styles */
.content-management-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.management-section {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    border: 1px solid var(--border-color);
}

.management-section h3 {
    margin: 0 0 1.5rem 0;
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.management-section h4 {
    margin: 0 0 1rem 0;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
}

/* Flashcard Management */
.flashcard-management {
    display: flex;
    flex-direction: column;
    /* gap: 1.5rem; */
}

.management-controls {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.search-filter-bar {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: center;
    margin-top: 1rem;
}

/* Ensure refresh button matches styling of deck action buttons */
.search-filter-bar .btn {
    background: var(--surface-color);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: auto;
    font-size: 0.875rem;
}

.search-filter-bar .btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow-light);
}

.search-filter-bar .btn i {
    font-size: 0.875rem;
}

.search-filter-bar .btn:disabled,
.search-filter-bar .btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--surface-color);
    color: var(--text-secondary);
    border-color: var(--border-color);
}

.search-filter-bar .btn:disabled:hover,
.search-filter-bar .btn.disabled:hover {
    background: var(--surface-color);
    color: var(--text-secondary);
    border-color: var(--border-color);
    transform: none;
    box-shadow: none;
}

.search-input,
.deck-filter,
.difficulty-filter {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--card-color);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: border-color 0.2s ease;
}

.search-input {
    flex: 1;
    min-width: 200px;
}

.deck-filter {
    min-width: 200px;
}

.deck-filter-container {
    flex: 1;
    min-width: 200px;
}

.search-input:focus,
.deck-filter:focus,
.difficulty-filter:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.bulk-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
    justify-content: flex-end;
}

/* Outline button style for bulk actions */
.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    font-size: 1rem;
}

.btn-outline:hover {
    background: var(--surface-color);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.flashcard-list-container {
    background: var(--card-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.count-info {
    padding: 0.75rem 1rem;
    background: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.flashcard-list {
    max-height: 500px;
    overflow-y: auto;
}

.flashcard-item {
    display: flex;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s ease;
}

.flashcard-item:last-child {
    border-bottom: none;
}

.flashcard-item:hover {
    background: var(--surface-color);
}

.flashcard-item.selected {
    background: rgba(99, 102, 241, 0.1);
    border-left: 3px solid var(--primary-color);
}

.flashcard-checkbox {
    margin-right: 1rem;
    cursor: pointer;
}

.flashcard-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-width: 0;
}

.flashcard-question {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1.5rem;
    line-height: 1.4;
    word-wrap: break-word;
}

/* Content Management specific flashcard question styling */
.flashcard-question-management {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1.5rem;
    line-height: 1.4;
    word-wrap: break-word;
    hyphens: auto;
    overflow-wrap: break-word;
}

.flashcard-answer {
    /* color: var(--text-secondary); */
    font-size: 2.4rem;
    line-height: 1.4;
    word-wrap: break-word;
}

/* Content Management specific flashcard answer styling */
.flashcard-answer-management {
    /* color: var(--text-secondary); */
    font-size: 2.4rem;
    line-height: 1.4;
    word-wrap: normal;
}

.flashcard-meta {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.flashcard-deck,
.flashcard-difficulty {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.difficulty-badge {
    padding: 0.125rem 0.5rem;
    border-radius: 12px;
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.difficulty-easy {
    background: rgba(34, 197, 94, 0.1);
    color: #16a34a;
}

.difficulty-medium {
    background: rgba(251, 191, 36, 0.1);
    color: #d97706;
}

.difficulty-hard {
    background: rgba(239, 68, 68, 0.1);
    color: #dc2626;
}

.flashcard-actions {
    display: flex;
    gap: 0.5rem;
    margin-left: 1rem;
}

.action-btn {
    padding: 0.375rem;
    border: none;
    border-radius: 4px;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
}

.action-btn:hover {
    background: var(--surface-color);
    color: var(--text-primary);
}

.action-btn.edit:hover {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
}

.action-btn.delete:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

.no-content-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 2rem;
    text-align: center;
    color: var(--text-secondary);
}

.no-content-message i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.no-content-message p {
    margin: 0;
    font-size: 1rem;
}

/* Quiz List Styles - Mirror flashcard list styling */
.quiz-list-container {
    background: var(--card-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.quiz-list {
    max-height: 500px;
    overflow-y: auto;
}

.quiz-item {
    display: flex;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s ease;
}

.quiz-item:last-child {
    border-bottom: none;
}

.quiz-item:hover {
    background: var(--surface-color);
}

.quiz-item.selected {
    background: rgba(99, 102, 241, 0.1);
    border-left: 3px solid var(--primary-color);
}

.quiz-checkbox {
    margin-right: 1rem;
    cursor: pointer;
}

.quiz-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-width: 0;
}

.quiz-question {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
    line-height: 1.4;
    word-wrap: break-word;
}

.quiz-answer {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.4;
    word-wrap: break-word;
}

.quiz-wrong-answers {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.4;
    word-wrap: break-word;
}

.quiz-meta {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.quiz-deck,
.quiz-difficulty {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.quiz-actions {
    display: flex;
    gap: 0.5rem;
    margin-left: 1rem;
}

/* Quiz action buttons - mirror flashcard action button styling */
.edit-btn,
.delete-btn {
    padding: 0.375rem;
    border: none;
    border-radius: 4px;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
}

.edit-btn:hover,
.delete-btn:hover {
    background: var(--surface-color);
    color: var(--text-primary);
}

.edit-btn:hover {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
}

.delete-btn:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

/* Quiz Navigation Buttons */
.quiz-nav-btn {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    padding: 15px 20px;
    background: var(--surface-color);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-medium);
    backdrop-filter: blur(10px);
    z-index: 1000;
    min-width: 120px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.quiz-nav-left {
    left: 60px;
}

.quiz-nav-right {
    right: 60px;
    flex-direction: row-reverse;
}

.quiz-nav-left, .quiz-nav-right {
    top: 60%;
}

.quiz-nav-btn:not(:disabled) {
    background: var(--card-color);
    color: var(--text-primary);
    cursor: pointer;
    border-color: var(--primary-color);
}

.quiz-nav-btn:not(:disabled):hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-50%) scale(1.05);
    box-shadow: var(--shadow-heavy);
    border-color: var(--primary-color);
}

.quiz-nav-btn:disabled {
    background: var(--surface-color);
    color: var(--text-secondary);
    cursor: not-allowed;
    opacity: 0.6;
    border-color: var(--border-color);
}

/* Import Confirmation Modal */
.import-confirmation-modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.import-confirmation-modal.show {
    display: flex;
}

.import-modal-content {
    background-color: var(--surface-color);
    padding: 0;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    width: 100%;
    max-width: 650px;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: var(--shadow-heavy);
    animation: modalSlideIn 0.3s ease-out;
    position: relative;
}

.import-modal-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1.5rem;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.import-modal-header h3 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.import-modal-close {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s ease;
}

.import-modal-close:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.import-modal-body {
    padding: 1.5rem;
}

.file-info {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
}

.file-info h4 {
    margin: 0 0 0.75rem 0;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.file-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.5rem;
    font-size: 0.9rem;
}

.file-detail {
    display: flex;
    justify-content: space-between;
    padding: 0.25rem 0;
}

.file-detail strong {
    color: var(--text-primary);
}

.file-detail span {
    color: var(--text-secondary);
}

.content-preview {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
}

.content-preview h4 {
    margin: 0 0 0.75rem 0;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.content-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.summary-item {
    text-align: center;
    padding: 0.75rem;
    background: var(--background-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.summary-count {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.summary-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.content-details {
    max-height: 200px;
    overflow-y: auto;
    font-size: 0.9rem;
    line-height: 1.4;
    color: var(--text-secondary);
    background: var(--background-color);
    padding: 0.75rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.import-options {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
}

.import-options h4 {
    margin: 0 0 1rem 0;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.option-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 1.5rem;
}

/* Import option buttons with vertical layout */
.import-option-btn {
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--background-color);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.import-option-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Merge/Append button - Success/Green theme */
.import-option-btn.btn-primary {
    border-color: var(--success-color);
    background: rgba(34, 197, 94, 0.05);
}

.import-option-btn.btn-primary:hover {
    border-color: var(--success-color);
    background: rgba(34, 197, 94, 0.1);
}

.import-option-btn.btn-primary .btn-main {
    color: var(--success-color);
}

/* Replace button - Warning/Orange theme */
.import-option-btn.btn-warning {
    border-color: var(--warning-color);
    background: rgba(245, 158, 11, 0.05);
}

.import-option-btn.btn-warning:hover {
    border-color: var(--warning-color);
    background: rgba(245, 158, 11, 0.1);
}

.import-option-btn.btn-warning .btn-main {
    color: var(--warning-color);
}

.import-option-btn .btn-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
}

.import-option-btn .btn-main {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.import-option-btn .btn-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.3;
    margin: 0;
}

.option-btn {
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--background-color);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.option-btn:hover {
    border-color: var(--primary-color);
    background: rgba(var(--primary-color-rgb), 0.05);
}

.option-btn.selected {
    border-color: var(--primary-color);
    background: rgba(var(--primary-color-rgb), 0.1);
    color: var(--primary-color);
}

.option-btn h5 {
    margin: 0 0 0.5rem 0;
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.option-btn p {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.3;
}

.import-modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
    background: var(--surface-color);
    border-radius: 0 0 var(--border-radius) var(--border-radius);
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .import-confirmation-modal {
        padding: 0.5rem;
    }
    
    .import-modal-content {
        width: 100%;
        max-width: none;
        max-height: 95vh;
    }
    
    .import-modal-header {
        padding: 1rem;
    }
    
    .import-modal-header h3 {
        font-size: 1.1rem;
    }
    
    .import-modal-body {
        padding: 1rem;
    }
    
    .option-buttons {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .import-option-btn {
        min-height: 70px;
        padding: 0.75rem;
    }
    
    .import-option-btn .btn-main {
        font-size: 0.95rem;
    }
    
    .import-option-btn .btn-subtitle {
        font-size: 0.8rem;
    }
    
    .content-summary {
        grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
        gap: 0.5rem;
    }
    
    .file-details {
        grid-template-columns: 1fr;
    }
    
    .import-modal-actions {
        flex-direction: column;
        padding: 1rem;
    }
    
    .summary-item {
        padding: 0.5rem;
    }
    
    .summary-count {
        font-size: 1.25rem;
    }
}

@media (max-width: 768px) {
    .search-filter-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-input {
        min-width: auto;
    }
    
    .bulk-actions {
        justify-content: center;
    }
    
    .flashcard-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .flashcard-actions {
        margin-left: 0;
        align-self: flex-end;
    }
    
    .flashcard-meta {
        flex-wrap: wrap;
    }
    
    .quiz-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .quiz-actions {
        margin-left: 0;
        align-self: flex-end;
    }
    
    .quiz-meta {
        flex-wrap: wrap;
    }
    
    /* Responsive behavior for quiz navigation buttons */
    .quiz-nav-btn {
        position: static;
        transform: none;
        margin: 10px 0;
        width: 100%;
        justify-content: center;
    }
    
    .quiz-side-navigation {
        position: fixed;
        bottom: 20px;
        left: 20px;
        right: 20px;
        display: flex;
        gap: 10px;
        background: var(--card-color);
        backdrop-filter: blur(10px);
        padding: 15px;
        border-radius: 15px;
        box-shadow: var(--shadow-heavy);
        border: 1px solid var(--border-color);
    }
    
    .quiz-nav-left {
        left: auto;
        flex: 1;
    }
    
    .quiz-nav-right {
        right: auto;
        flex: 1;
        flex-direction: row;
    }
}

/* Import confirmation modal content preview list styling */
#import-confirmation-modal > div > div.import-modal-body > div.import-analysis > div.content-preview > ul {
    margin-left: 1.5rem;
}