/* Certifications Page Styles */

/* Certifications Header */
.certs-header {
    padding: calc(80px + var(--spacing-3xl)) var(--spacing-lg) var(--spacing-3xl);
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg) 100%);
    text-align: center;
    border-bottom: 1px solid var(--color-border);
}

.certs-title {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-accent) 0%, #9333ea 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.certs-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
}

/* Certification Stats */
.cert-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
    margin-top: var(--spacing-2xl);
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Certifications Section */
.certs-section {
    padding: var(--spacing-3xl) 0;
}

/* Category Filters */
.cert-categories {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
    flex-wrap: wrap;
}

.category-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: transparent;
    border: 2px solid var(--color-border);
    border-radius: 25px;
    color: var(--color-text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.category-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.category-btn.active {
    background: var(--color-accent);
    color: white;
    border-color: var(--color-accent);
}

.category-btn:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Certifications Grid */
.certs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

/* Certification Card */
.cert-card {
    background: var(--color-card-bg);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    cursor: pointer;
}

.cert-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-accent);
}

.cert-card[data-hidden="true"] {
    display: none;
}

/* Certification Image */
.cert-image {
    position: relative;
    height: 200px;
    background: var(--color-bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.cert-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: var(--spacing-lg);
    transition: transform var(--transition-slow);
}

.cert-card:hover .cert-image img {
    transform: scale(1.1);
}

/* Certification Level Badge */
.cert-level {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    z-index: 2;
}

.cert-level.expert {
    background: linear-gradient(135deg, #ff6b6b, #ff4757);
    color: white;
}

.cert-level.advanced {
    background: linear-gradient(135deg, #4834d4, #686de0);
    color: white;
}

.cert-level.intermediate {
    background: linear-gradient(135deg, #00d2d3, #01a3a4);
    color: white;
}

.cert-level.foundational {
    background: linear-gradient(135deg, #6c757d, #868e96);
    color: white;
}

/* Certification Content */
.cert-content {
    padding: var(--spacing-lg);
}

.cert-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.cert-full-name {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
}

/* Certification Details */
.cert-details {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.cert-org {
    font-size: 0.875rem;
    color: var(--color-accent);
    font-weight: 500;
}

.cert-year {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

/* Certification Skills */
.cert-skills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.cert-skills span {
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    font-size: 0.75rem;
    border: 1px solid var(--color-border);
}

/* Timeline Section */
.timeline-section {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-secondary);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-xl) 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: var(--color-border);
}

.timeline-item {
    position: relative;
    padding: var(--spacing-xl) 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-2xl);
}

.timeline-item:nth-child(odd) {
    flex-direction: row-reverse;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 16px;
    height: 16px;
    background: var(--color-accent);
    border: 3px solid var(--color-bg);
    border-radius: 50%;
    z-index: 1;
}

.timeline-date {
    flex: 1;
    text-align: right;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-accent);
}

.timeline-item:nth-child(odd) .timeline-date {
    text-align: left;
}

.timeline-content {
    flex: 1;
    background: var(--color-card-bg);
    padding: var(--spacing-lg);
    border-radius: 12px;
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.timeline-content:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}

.timeline-content h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.timeline-content p {
    margin: 0;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .cert-stats {
        gap: var(--spacing-xl);
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .cert-categories {
        width: 100%;
        justify-content: flex-start;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding: 0 var(--spacing-xl);
        gap: var(--spacing-sm);
        scroll-snap-type: x proximity;
    }
    
    .category-btn {
        flex: 0 0 auto;
        scroll-snap-align: start;
    }
    
    .certs-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        padding: 0 var(--spacing-md);
    }
    
    .timeline::before {
        left: 30px;
    }
    
    .timeline-item {
        flex-direction: column !important;
        padding-left: 60px;
    }
    
    .timeline-item::before {
        left: 30px;
    }
    
    .timeline-date {
        text-align: left !important;
        margin-bottom: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .cert-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .certs-grid {
        grid-template-columns: 1fr;
    }
    
    .cert-level {
        font-size: 0.625rem;
        padding: 2px 8px;
    }
}

/* Desktop-specific adjustments so level badge doesn't cover image */
@media (min-width: 1024px) {
    .cert-image {
        height: 228px; /* reserve space for badge without shrinking image */
        padding-top: 28px;
    }
    .cert-image img {
        padding-top: var(--spacing-lg);
        padding-right: var(--spacing-lg);
    }
}

/* Animations */
.cert-card {
    animation: fadeInUp 0.6s ease-out;
    animation-fill-mode: both;
}

.cert-card:nth-child(1) { animation-delay: 0.1s; }
.cert-card:nth-child(2) { animation-delay: 0.15s; }
.cert-card:nth-child(3) { animation-delay: 0.2s; }
.cert-card:nth-child(4) { animation-delay: 0.25s; }
.cert-card:nth-child(5) { animation-delay: 0.3s; }
.cert-card:nth-child(6) { animation-delay: 0.35s; }
.cert-card:nth-child(7) { animation-delay: 0.4s; }
.cert-card:nth-child(8) { animation-delay: 0.45s; }
.cert-card:nth-child(9) { animation-delay: 0.5s; }
.cert-card:nth-child(10) { animation-delay: 0.55s; }
.cert-card:nth-child(11) { animation-delay: 0.6s; }
.cert-card:nth-child(12) { animation-delay: 0.65s; }
.cert-card:nth-child(13) { animation-delay: 0.7s; }

.timeline-item {
    animation: fadeIn 0.8s ease-out;
    animation-fill-mode: both;
}

.timeline-item:nth-child(1) { animation-delay: 0.2s; }
.timeline-item:nth-child(2) { animation-delay: 0.4s; }
.timeline-item:nth-child(3) { animation-delay: 0.6s; }
.timeline-item:nth-child(4) { animation-delay: 0.8s; }