/* ============================================
   CASE STUDY PAGE STYLES
   ============================================ */

/* Case Study Hero */
.case-hero {
    padding: var(--space-24) 0 var(--space-16);
    background: linear-gradient(180deg, var(--color-bg) 0%, #F0F4FF 100%);
    overflow: hidden;
    position: relative;
}

.case-hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-10);
    align-items: center;
}

@media (min-width: 1024px) {
    .case-hero-container {
        grid-template-columns: 1fr 1.2fr;
        gap: var(--space-16);
    }
}

/* Prominent Back Button */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text);
    padding: var(--space-2) var(--space-4);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-6);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

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

.case-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.case-tag {
    padding: var(--space-1) var(--space-3);
    background: var(--color-primary);
    color: var(--color-text-inverse);
    font-size: var(--text-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
}

.case-title {
    font-size: var(--text-5xl);
    font-weight: 800;
    line-height: 1.1;
    color: var(--color-text);
    margin-bottom: var(--space-4);
    letter-spacing: -0.02em;
}

@media (min-width: 768px) {
    .case-title {
        font-size: var(--text-6xl);
    }
}

.case-subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-8);
    max-width: 500px;
    line-height: 1.6;
}

.case-stats {
    display: flex;
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: var(--text-3xl);
    font-weight: 800;
    color: var(--color-primary);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.case-hero-visual {
    display: flex;
    justify-content: center;
}

.case-mockup {
    width: 100%;
    max-width: 500px;
    aspect-ratio: 16/10;
    background: var(--color-bg-card);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    overflow: hidden;
}

.mockup-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-size: var(--text-lg);
}

.mockup-placeholder span {
    font-size: 4rem;
    margin-bottom: var(--space-4);
}

.mockup-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-2xl);
}

/* Case Sections */
.case-section {
    padding: var(--space-20) 0;
}

.case-section.alt-bg {
    background: var(--color-bg-card);
}

.case-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.case-section-header {
    margin-bottom: var(--space-12);
}

.case-section-header h2 {
    font-size: var(--text-3xl);
    font-weight: 800;
    color: var(--color-text);
}

@media (min-width: 768px) {
    .case-section-header h2 {
        font-size: var(--text-4xl);
    }
}

/* Content Grid */
.case-content-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-12);
}

@media (min-width: 768px) {
    .case-content-grid {
        grid-template-columns: 2fr 1fr;
    }
}

.case-text .lead-text {
    font-size: var(--text-xl);
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--space-6);
    line-height: 1.5;
}

.case-text p {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-4);
}

.case-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.info-card {
    padding: var(--space-5);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
}

.info-card h4 {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-2);
}

.info-card p {
    font-size: var(--text-sm);
    color: var(--color-text);
    font-weight: 500;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.feature-card {
    padding: var(--space-8);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
}

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

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-4);
}

.feature-card h3 {
    font-size: var(--text-lg);
    font-weight: 700;
    margin-bottom: var(--space-2);
}

.feature-card p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: var(--space-8);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--color-primary), var(--color-accent-purple));
    border-radius: var(--radius-full);
}

.timeline-item {
    position: relative;
    padding-bottom: var(--space-10);
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(-1 * var(--space-8) - 6px);
    top: 0;
    width: 15px;
    height: 15px;
    background: var(--color-bg-card);
    border: 3px solid var(--color-primary);
    border-radius: var(--radius-full);
}

.timeline-item.launch::before {
    width: 20px;
    height: 20px;
    left: calc(-1 * var(--space-8) - 8.5px);
    background: var(--color-primary);
}

.timeline-marker {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
}

.week-badge {
    padding: var(--space-1) var(--space-3);
    background: var(--color-primary);
    color: var(--color-text-inverse);
    font-size: var(--text-xs);
    font-weight: 700;
    border-radius: var(--radius-full);
}

.week-badge.launch-badge {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.timeline-date {
    font-size: var(--text-sm);
    color: var(--color-text-light);
}

.timeline-content h3 {
    font-size: var(--text-lg);
    font-weight: 700;
    margin-bottom: var(--space-3);
}

.timeline-content ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.timeline-content li {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    padding-left: var(--space-5);
    position: relative;
}

.timeline-content li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

/* Tech Grid */
.tech-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
}

@media (min-width: 768px) {
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.tech-category h3 {
    font-size: var(--text-lg);
    font-weight: 700;
    margin-bottom: var(--space-4);
}

.tech-pills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.tech-pill {
    padding: var(--space-2) var(--space-4);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.tech-pill:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* Challenges */
.challenges-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.challenge-item {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    overflow: hidden;
}

.challenge-header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-6);
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
}

.challenge-number {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: var(--color-text-inverse);
    font-weight: 800;
    border-radius: var(--radius-lg);
}

.challenge-header h3 {
    font-size: var(--text-lg);
    font-weight: 700;
}

.challenge-content {
    padding: var(--space-6);
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

@media (min-width: 768px) {
    .challenge-content {
        grid-template-columns: 1fr 1fr;
    }
}

.problem,
.solution {
    padding: var(--space-4);
    border-radius: var(--radius-lg);
}

.problem {
    background: #FEF2F2;
}

.solution {
    background: #F0FDF4;
}

.problem h4,
.solution h4 {
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: var(--space-2);
}

.problem h4 {
    color: #DC2626;
}

.solution h4 {
    color: #16A34A;
}

.problem p,
.solution p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.impact {
    grid-column: 1 / -1;
}

.impact-badge {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
}

/* Learnings Grid */
.learnings-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

@media (min-width: 768px) {
    .learnings-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.learning-card {
    padding: var(--space-8);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    position: relative;
}

.learning-number {
    position: absolute;
    top: var(--space-6);
    right: var(--space-6);
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--color-border);
}

.learning-card h3 {
    font-size: var(--text-lg);
    font-weight: 700;
    margin-bottom: var(--space-3);
    padding-right: var(--space-8);
}

.learning-card p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Feedback Grid */
.feedback-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
}

@media (min-width: 768px) {
    .feedback-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.feedback-card {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    padding: var(--space-5);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
}

.feedback-card.positive {
    border-left: 3px solid #16A34A;
}

.feedback-card.improvement {
    border-left: 3px solid #F59E0B;
}

.feedback-icon {
    font-size: var(--text-xl);
}

.feedback-card p {
    font-size: var(--text-sm);
    color: var(--color-text);
    font-style: italic;
    line-height: 1.5;
}

/* Roadmap Grid */
.roadmap-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

@media (min-width: 768px) {
    .roadmap-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.roadmap-card {
    padding: var(--space-6);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.roadmap-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
}

.roadmap-quarter {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: var(--color-primary);
    color: var(--color-text-inverse);
    font-size: var(--text-xs);
    font-weight: 700;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-3);
}

.roadmap-card h3 {
    font-size: var(--text-lg);
    font-weight: 700;
    margin-bottom: var(--space-2);
}

.roadmap-card p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* CTA Section */
.case-cta-section {
    padding: var(--space-20) 0;
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, #1a1a2e 100%);
    text-align: center;
}

.cta-content h2 {
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--color-text-inverse);
    margin-bottom: var(--space-4);
}

.cta-content p {
    font-size: var(--text-lg);
    color: var(--color-text-light);
    margin-bottom: var(--space-8);
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-4);
}

.cta-buttons .btn-secondary {
    border-color: rgba(255, 255, 255, 0.4);
    color: var(--color-text-inverse);
}

.cta-buttons .btn-secondary:hover {
    border-color: var(--color-text-inverse);
    background: rgba(255, 255, 255, 0.1);
}

/* Gallery Grid */
.gallery-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

@media (min-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.gallery-item {
    border-radius: var(--radius-xl);
    overflow: hidden;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.gallery-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

.gallery-item img {
    width: 100%;
    aspect-ratio: 16/10;
    object-fit: cover;
    display: block;
}

.gallery-caption {
    padding: var(--space-4);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    text-align: center;
    font-weight: 500;
}

/* ============================================
   ENHANCED CASE STUDY STYLES
   ============================================ */

/* Better Visual Separation */
.case-section+.case-section:not(.alt-bg) {
    border-top: 1px solid var(--color-border-light);
}

/* Improved Content Scanability */
.case-text ul,
.case-text ol {
    margin: var(--space-4) 0;
    padding-left: var(--space-6);
}

.case-text li {
    margin-bottom: var(--space-2);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.case-text li::marker {
    color: var(--color-primary);
}

/* Enhanced Timeline */
.timeline-item {
    transition: all var(--transition-base);
}

.timeline-item:hover .timeline-content {
    transform: translateX(8px);
}

.timeline-content {
    transition: transform var(--transition-base);
}

/* Case Study Navigation Enhancements */
.case-nav-link .case-nav-label {
    display: block;
    margin-bottom: var(--space-1);
}

.case-nav-link .case-nav-title {
    display: block;
}

.case-nav-link svg {
    width: 24px;
    height: 24px;
    color: var(--color-text-light);
    transition: all var(--transition-base);
}

.case-nav-link:hover svg {
    color: var(--color-primary);
    transform: translateX(4px);
}

.case-nav-link.prev:hover svg {
    transform: translateX(-4px);
}

/* Improved Visual Hierarchy */
.case-section-header {
    position: relative;
    margin-bottom: var(--space-16);
}

.case-section-header::after {
    content: '';
    position: absolute;
    bottom: calc(-1 * var(--space-4));
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
}

/* Feature Cards Animation */
.feature-card {
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

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

/* Challenge Cards Enhancement */
.challenge-item {
    transition: all var(--transition-base);
}

.challenge-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* More Breathing Room */
.learnings-grid,
.roadmap-grid,
.features-grid {
    gap: var(--space-8);
}

/* Mobile Responsive Improvements */
@media (max-width: 768px) {
    .case-study-nav {
        flex-direction: column;
        gap: var(--space-4);
    }

    .case-nav-link {
        width: 100%;
        justify-content: center;
    }

    .case-section-header::after {
        width: 40px;
    }
}