/* ==========================================
   EXPERTISE SECTION
   ========================================== */

.expertise {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #e2e8f0 100%);
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.expertise-card {
    padding: var(--spacing-lg);
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.expertise-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background: linear-gradient(to bottom, var(--primary), var(--primary-light));
    transition: height 0.3s ease;
}

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

.expertise-card:hover::before {
    height: 100%;
}

.expertise-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--gray-light);
    line-height: 1;
    margin-bottom: var(--spacing-sm);
    transition: var(--transition);
}

.expertise-card:hover .expertise-number {
    color: var(--primary-light);
}

.expertise-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: var(--spacing-sm);
}

.expertise-card p {
    color: var(--gray);
    line-height: 1.7;
}

/* Technologies Section */
.technologies {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.technologies-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: var(--spacing-md);
}

.tech-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
}

.tech-item {
    flex: 0 0 auto;
}

.tech-logo {
    padding: 1rem 2rem;
    background: var(--gray-light);
    border-radius: var(--radius-sm);
    font-weight: 600;
    color: var(--dark);
    transition: var(--transition);
    display: inline-block;
    white-space: nowrap;
}

.tech-logo:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

/* Expertise with icons */
.expertise-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.expertise-icon svg {
    width: 30px;
    height: 30px;
    color: var(--white);
}

/* Expertise List Style */
.expertise-list {
    list-style: none;
    padding: 0;
    margin: var(--spacing-md) 0 0 0;
}

.expertise-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--gray);
}

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

/* Certifications/Badges */
.certifications {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--gray-light);
}

.certification-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.certification-badge img {
    width: 80px;
    height: 80px;
    object-fit: contain;
    margin-bottom: var(--spacing-sm);
    filter: grayscale(100%);
    opacity: 0.7;
    transition: var(--transition);
}

.certification-badge:hover img {
    filter: grayscale(0%);
    opacity: 1;
}

.certification-badge span {
    font-size: var(--font-size-sm);
    color: var(--gray);
}

/* Responsive */
@media (max-width: 1024px) {
    .expertise-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .expertise {
        padding: var(--spacing-lg) 0;
    }
    
    .expertise-grid {
        grid-template-columns: 1fr;
    }
    
    .expertise-card {
        padding: var(--spacing-md);
    }
    
    .expertise-number {
        font-size: 2.5rem;
    }
    
    .tech-logos {
        gap: var(--spacing-sm);
    }
    
    .tech-logo {
        padding: 0.75rem 1.25rem;
        font-size: var(--font-size-sm);
    }
    
    .certifications {
        gap: var(--spacing-md);
    }
    
    .certification-badge img {
        width: 60px;
        height: 60px;
    }
}