/* ===================================
   Case Study Styles
   =================================== */

/* Main Navigation */
.main-nav-section {
    margin-bottom: 25px;
}

.main-nav {
    display: flex;
    gap: 15px;
    padding: 15px;
}

.main-nav-btn {
    flex: 1;
    background: var(--surface);
    border: none;
    padding: 15px 30px;
    border-radius: 16px;
    box-shadow: var(--neu-shadow-small);
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    position: relative;
    overflow: hidden;
}

.main-nav-btn::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform var(--transition-normal) ease;
}

.main-nav-btn:hover::before {
    transform: scaleX(1);
}

.main-nav-btn:hover {
    box-shadow: var(--neu-shadow);
    transform: translateY(-3px);
}

.main-nav-btn.active {
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--neu-shadow), 0 0 25px rgba(108, 99, 255, 0.4);
}

.main-nav-btn.active::before {
    transform: scaleX(1);
}

.main-nav-btn i {
    font-size: 20px;
}

/* Content Views */
.content-view {
    display: none;
}

.content-view.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

/* Case Studies Grid */
.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    gap: 25px;
}

/* Case Study Card */
.case-study-card {
    background: var(--surface);
    border-radius: 24px;
    box-shadow: var(--neu-shadow);
    padding: 30px;
    transition: all var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.case-study-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform var(--transition-normal) ease;
}

.case-study-card:hover::before {
    transform: scaleX(1);
}

.case-study-card:hover {
    box-shadow: var(--neu-shadow-hover), 0 0 30px rgba(108, 99, 255, 0.2);
    transform: translateY(-6px);
}

.case-study-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.case-study-badge {
    background: var(--primary-gradient);
    color: white;
    padding: 6px 14px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(108, 99, 255, 0.3);
}

.case-study-actions {
    display: flex;
    gap: 8px;
}

.case-study-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.4;
}

.case-study-excerpt {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.case-study-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.case-study-stats {
    display: flex;
    gap: 15px;
    font-size: 13px;
    color: var(--text-secondary);
}

.case-study-stat {
    display: flex;
    align-items: center;
    gap: 5px;
}

.case-study-stat i {
    color: var(--primary-color);
}

/* Case Study Viewer */
.case-study-viewer {
    max-height: 70vh;
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: 10px;
}

/* Ensure modal content is scrollable */
#caseStudyViewerModal .modal-content {
    max-height: 85vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

#caseStudyViewerModal .modal-body {
    overflow-y: auto;
    overflow-x: hidden;
    flex: 1;
    padding: 25px;
}

.case-study-scenario {
    background: var(--background);
    padding: 25px;
    border-radius: 16px;
    box-shadow: var(--neu-shadow-inset);
    margin-bottom: 30px;
}

.case-study-scenario h3 {
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.case-study-scenario-text {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-primary);
    white-space: pre-wrap;
}

/* Question Tree Structure */
.questions-tree {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.question-tree-item {
    background: var(--surface);
    border-radius: 16px;
    box-shadow: var(--neu-shadow);
    padding: 20px;
    transition: all var(--transition-normal) ease;
}

.question-tree-item:hover {
    box-shadow: var(--neu-shadow-hover);
}

.main-question-section {
    margin-bottom: 15px;
}

.main-question-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
}

.question-number {
    background: var(--primary-gradient);
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    box-shadow: 0 4px 15px rgba(108, 99, 255, 0.3);
}

.main-question-text {
    flex: 1;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.6;
    padding: 0 15px;
}

.expand-btn {
    background: var(--surface);
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    box-shadow: var(--neu-shadow-small);
    cursor: pointer;
    color: var(--primary-color);
    font-size: 14px;
    transition: all var(--transition-fast) ease;
}

.expand-btn:hover {
    box-shadow: var(--neu-shadow);
    transform: scale(1.1);
}

.expand-btn.expanded {
    transform: rotate(180deg);
}

.main-answer {
    background: var(--background);
    padding: 15px;
    border-radius: 12px;
    box-shadow: var(--neu-shadow-inset);
    margin-bottom: 15px;
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-primary);
}

/* Follow-up Questions */
.follow-up-section {
    display: none;
    padding-left: 20px;
    border-left: 3px solid var(--primary-color);
    margin-top: 15px;
    animation: slideDown 0.3s ease;
}

.follow-up-section.expanded {
    display: block;
}

@keyframes slideDown {
    from {
        opacity: 0;
        max-height: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        max-height: 2000px;
        transform: translateY(0);
    }
}

.follow-up-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    padding: 10px 15px;
    background: var(--surface);
    border-radius: 10px;
    box-shadow: var(--neu-shadow-small);
}

.follow-up-header i {
    color: var(--primary-color);
}

.follow-up-header h4 {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 600;
}

.follow-up-questions {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.follow-up-item {
    background: var(--surface);
    padding: 15px;
    border-radius: 12px;
    box-shadow: var(--neu-shadow-small);
    transition: all var(--transition-fast) ease;
}

.follow-up-item:hover {
    box-shadow: var(--neu-shadow);
    transform: translateX(5px);
}

.follow-up-type {
    display: inline-block;
    background: var(--primary-gradient);
    color: white;
    padding: 4px 10px;
    border-radius: 8px;
    font-size: 11px;
    font-weight: 700;
    margin-bottom: 8px;
    text-transform: uppercase;
}

.follow-up-type.why {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.follow-up-type.what {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.follow-up-type.how {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.follow-up-type.issues {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.follow-up-question {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
    line-height: 1.5;
}

.follow-up-answer {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    padding: 12px;
    background: var(--background);
    border-radius: 8px;
    box-shadow: var(--neu-shadow-inset);
}

/* Generate Follow-up Button */
.generate-followup-btn {
    background: var(--surface);
    border: none;
    padding: 10px 18px;
    border-radius: 10px;
    box-shadow: var(--neu-shadow-small);
    color: var(--primary-color);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast) ease;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 10px;
}

.generate-followup-btn:hover {
    box-shadow: var(--neu-shadow);
    transform: translateY(-2px);
}

.generate-followup-btn i {
    animation: spin 2s linear infinite;
}

.generate-followup-btn:hover i {
    animation: spin 0.5s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Checkbox Group */
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 10px;
    border-radius: 10px;
    transition: all var(--transition-fast) ease;
}

.checkbox-label:hover {
    background: var(--surface);
    box-shadow: var(--neu-shadow-small);
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.checkbox-label span {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

/* Case Study Preview */
.case-study-preview {
    max-height: 60vh;
    overflow-y: auto;
    padding: 5px;
}

.preview-scenario {
    background: var(--background);
    padding: 25px;
    border-radius: 16px;
    box-shadow: var(--neu-shadow-inset);
    margin-bottom: 25px;
}

.preview-scenario h4 {
    font-size: 16px;
    color: var(--text-primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.preview-scenario-text {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-primary);
    white-space: pre-wrap;
}

.preview-questions {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.preview-question-item {
    background: var(--surface);
    padding: 20px;
    border-radius: 16px;
    box-shadow: var(--neu-shadow);
}

.preview-question-header {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 15px;
}

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

.preview-main-q {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
    line-height: 1.5;
}

.preview-main-a {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    padding: 12px;
    background: var(--background);
    border-radius: 10px;
    box-shadow: var(--neu-shadow-inset);
    margin-bottom: 15px;
}

.preview-followups {
    padding-left: 15px;
    border-left: 2px solid var(--primary-color);
}

.preview-followup-item {
    margin-bottom: 12px;
    padding: 12px;
    background: var(--background);
    border-radius: 10px;
    box-shadow: var(--neu-shadow-inset);
}

.preview-followup-item:last-child {
    margin-bottom: 0;
}

.preview-followup-q {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.preview-followup-a {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Loading State for Follow-ups */
.followup-loading {
    text-align: center;
    padding: 20px;
    color: var(--text-secondary);
}

.followup-loading i {
    font-size: 24px;
    color: var(--primary-color);
    margin-bottom: 10px;
    animation: spin 1s linear infinite;
}

/* Responsive Design */
@media (max-width: 768px) {
    .main-nav {
        flex-direction: column;
    }
    
    .case-studies-grid {
        grid-template-columns: 1fr;
    }
    
    .main-question-header {
        flex-direction: column;
        gap: 10px;
    }
    
    .follow-up-section {
        padding-left: 10px;
    }
}

/* Dark Theme Adjustments */
[data-theme="dark"] .case-study-scenario {
    background: #0d1117;
}

[data-theme="dark"] .main-answer {
    background: #0d1117;
}

[data-theme="dark"] .follow-up-answer {
    background: #0d1117;
}

[data-theme="dark"] .preview-scenario {
    background: #0d1117;
}

[data-theme="dark"] .preview-main-a {
    background: #0d1117;
}

[data-theme="dark"] .preview-followup-item {
    background: #0d1117;
}