/* Project Page Specific Styles */

.btn-back {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-primary);
    font-weight: 500;
    transition: all var(--transition-base);
}

.btn-back:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateX(-5px);
}

/* Project Hero */
.project-hero {
    padding: 8rem 0 4rem;
    min-height: 60vh;
    display: flex;
    align-items: center;
}

.project-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.project-breadcrumb a {
    color: var(--text-secondary);
    transition: color var(--transition-base);
}

.project-breadcrumb a:hover {
    color: var(--primary-color);
}

.project-breadcrumb i {
    font-size: 0.7rem;
}

.project-header-content {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 3rem;
    align-items: flex-start;
}

.project-icon-large {
    width: 150px;
    height: 150px;
    min-width: 150px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: white;
    flex-shrink: 0;
}

.project-header-info {
    min-width: 0;
}

.project-badges {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.cert-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 10px 18px;
    background: rgba(99, 102, 241, 0.15);
    border: 2px solid rgba(99, 102, 241, 0.3);
    border-radius: 50px;
    font-size: 15px;
    color: var(--primary-color);
    font-weight: 600;
    transition: all 0.3s ease;
}

.project-title-large {
    font-size: clamp(2rem, 4vw, 3.5rem);
    margin-bottom: 0.75rem;
    line-height: 1.1;
}

.project-id-large {
    font-size: 1.1rem;
    color: var(--text-muted);
    font-family: monospace;
    margin-bottom: 1.5rem;
}

.project-description-large {
    font-size: 1.2rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
}

.project-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Video Section */
.video-section {
    background: var(--bg-card);
}

.video-container {
    max-width: 1200px;
    margin: 0 auto;
    border-radius: var(--border-radius);
    overflow: hidden;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
}

.video-placeholder {
    padding: 8rem 2rem;
    text-align: center;
    color: var(--text-secondary);
}

.video-placeholder i {
    font-size: 6rem;
    color: #FF0000;
    margin-bottom: 2rem;
}

.video-placeholder p {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.video-placeholder-text {
    font-size: 1rem !important;
    color: var(--text-muted) !important;
    margin-bottom: 2rem !important;
}

/* Architecture Section */
.architecture-container {
    max-width: 1200px;
    margin: 0 auto;
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
}

.architecture-container img {
    width: 100%;
    height: auto;
    display: block;
}

/* Tech Stack */
.tech-stack-section {
    background: var(--bg-card);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    max-width: 1200px;
    margin: 0 auto;
}

.tech-tag {
    background: var(--bg-dark);
    padding: 1rem 1.5rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
    transition: all var(--transition-base);
}

.tech-tag:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
}

.tech-tag i {
    color: var(--primary-color);
}

/* Documentation */
.doc-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

/* Responsive: Keep 4 columns on tablets, stack on mobile */
@media (max-width: 1024px) {
    .doc-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 1rem;
    }
    
    .doc-card {
        padding: 2rem 1.5rem;
    }
    
    .doc-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .doc-card h3 {
        font-size: 1.2rem;
    }
}

@media (max-width: 768px) {
    .doc-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 0.75rem;
    }
    
    .doc-card {
        padding: 1.5rem 1rem;
    }
    
    .doc-icon {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
        margin-bottom: 1rem;
    }
    
    .doc-card h3 {
        font-size: 1rem;
    }
    
    .doc-card p {
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .doc-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 0.5rem;
    }
    
    .doc-card {
        padding: 1rem 0.5rem;
    }
    
    .doc-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
        margin-bottom: 0.5rem;
    }
    
    .doc-card h3 {
        font-size: 0.8rem;
    }
    
    .doc-card p {
        font-size: 0.7rem;
        display: none; /* Hide description on very small screens */
    }
    
    .doc-link {
        font-size: 0.75rem;
    }
}

.doc-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all var(--transition-base);
}

.doc-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-color);
}

.doc-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
}

.doc-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.doc-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.doc-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-weight: 500;
    transition: all var(--transition-base);
}

.doc-link:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* Quick Start */
.quickstart-section {
    background: var(--bg-card);
}

.quickstart-content {
    max-width: 900px;
    margin: 0 auto;
}

.quickstart-step {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--border-color);
}

.quickstart-step:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

.step-content p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.step-content ul {
    list-style: none;
    padding: 0;
}

.step-content ul li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
}

.step-content ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
}

/* Related Projects */
.related-projects-section {
    background: var(--bg-card);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.view-all-container {
    text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
    .project-header-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .project-icon-large {
        margin: 0 auto;
    }
    
    .project-badges {
        justify-content: center;
    }
    
    .project-actions {
        justify-content: center;
    }
    
    .quickstart-step {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .step-number {
        margin: 0 auto;
    }
    
    .tech-grid {
        grid-template-columns: 1fr;
    }
    
    .doc-grid {
        grid-template-columns: 1fr;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
    }
}


/* Footer Links */
.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-base);
}

.footer-section a:hover {
    color: var(--primary-color);
}


/* Challenges & Solutions Section */
.challenges-section {
    padding: 4rem 0;
    background: var(--bg-dark);
}

.challenges-container {
    max-width: 1000px;
    margin: 0 auto;
}

.challenge-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-bottom: 2rem;
    transition: all var(--transition-base);
}

.challenge-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(99, 102, 241, 0.2);
}

.challenge-header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.challenge-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.challenge-title-wrapper {
    flex: 1;
}

.challenge-number {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.challenge-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.challenge-content {
    display: grid;
    gap: 1.5rem;
}

.challenge-subsection {
    position: relative;
    padding-left: 1.5rem;
}

.challenge-subsection::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5rem;
    width: 4px;
    height: calc(100% - 1rem);
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.challenge-subsection h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.challenge-subsection h4 i {
    color: var(--primary-color);
    font-size: 1rem;
}

.challenge-subsection p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 0.75rem;
}

.challenge-subsection ul {
    list-style: none;
    padding: 0;
    margin: 0.5rem 0;
}

.challenge-subsection ul li {
    color: var(--text-secondary);
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.6;
}

.challenge-subsection ul li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.lesson-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 8px;
    color: var(--primary-color);
    font-size: 0.875rem;
    font-weight: 600;
    margin-top: 1rem;
}

.lesson-badge i {
    font-size: 1rem;
}

.challenges-empty-state {
    text-align: center;
    padding: 3rem 2rem;
    background: var(--bg-card);
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
}

.challenges-empty-state i {
    font-size: 3rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.challenges-empty-state h3 {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.challenges-empty-state p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .challenge-item {
        padding: 1.5rem;
    }
    
    .challenge-header {
        flex-direction: column;
    }
    
    .challenge-icon {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
    }
    
    .challenge-title {
        font-size: 1.25rem;
    }
    
    .challenge-subsection {
        padding-left: 1rem;
    }
}