/* Portfolio Section Styles */
.portfolio {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    position: relative;
    overflow: hidden;
}

.portfolio::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(168, 85, 247, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(236, 72, 153, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    grid-template-rows: repeat(8, 120px);
    gap: 1rem;
    position: relative;
    z-index: 2;
}

.portfolio-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.4s ease;
    background: rgba(30, 41, 59, 0.8);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.portfolio-item.large {
    grid-column: span 6;
    grid-row: span 4;
}

.portfolio-item:not(.large) {
    grid-column: span 3;
    grid-row: span 3;
}

.portfolio-item:nth-child(2) {
    grid-column: span 3;
    grid-row: span 4;
}

.portfolio-item:nth-child(3) {
    grid-column: span 3;
    grid-row: span 3;
}

.portfolio-item:nth-child(4) {
    grid-column: span 3;
    grid-row: span 3;
}

.portfolio-item:nth-child(5) {
    grid-column: span 3;
    grid-row: span 4;
}

.portfolio-image {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.portfolio-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.9), rgba(139, 92, 246, 0.9));
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1.5rem;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-item:hover .portfolio-image img {
    transform: scale(1.1);
}

.ai-badge {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    align-self: flex-start;
    margin-bottom: 1rem;
    backdrop-filter: blur(10px);
}

.portfolio-overlay h3 {
    color: white;
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0;
}

/* Placeholder images for demo */
.portfolio-image {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
}

.portfolio-image::before {
    content: 'AI Generated';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .portfolio-grid {
        grid-template-columns: repeat(8, 1fr);
        grid-template-rows: repeat(10, 100px);
        gap: 0.75rem;
    }

    .portfolio-item.large {
        grid-column: span 4;
        grid-row: span 4;
    }

    .portfolio-item:not(.large) {
        grid-column: span 2;
        grid-row: span 3;
    }

    .portfolio-item:nth-child(2) {
        grid-column: span 2;
        grid-row: span 4;
    }

    .portfolio-item:nth-child(5) {
        grid-column: span 2;
        grid-row: span 4;
    }
}

@media (max-width: 768px) {
    .portfolio {
        padding: 3rem 0;
    }

    .portfolio-grid {
        grid-template-columns: repeat(6, 1fr);
        grid-template-rows: repeat(12, 80px);
        gap: 0.5rem;
    }

    .portfolio-item.large {
        grid-column: span 3;
        grid-row: span 4;
    }

    .portfolio-item:not(.large) {
        grid-column: span 2;
        grid-row: span 2;
    }

    .portfolio-item:nth-child(2) {
        grid-column: span 2;
        grid-row: span 3;
    }

    .portfolio-item:nth-child(5) {
        grid-column: span 2;
        grid-row: span 3;
    }

    .portfolio-overlay {
        padding: 1rem;
    }

    .portfolio-overlay h3 {
        font-size: 1rem;
    }

    .ai-badge {
        font-size: 0.7rem;
        padding: 0.4rem 0.8rem;
    }
}

@media (max-width: 480px) {
    .portfolio-grid {
        grid-template-columns: repeat(4, 1fr);
        grid-template-rows: repeat(15, 70px);
        gap: 0.4rem;
    }

    .portfolio-item.large {
        grid-column: span 2;
        grid-row: span 4;
    }

    .portfolio-item:not(.large) {
        grid-column: span 1;
        grid-row: span 2;
    }

    .portfolio-item:nth-child(2) {
        grid-column: span 1;
        grid-row: span 3;
    }

    .portfolio-item:nth-child(5) {
        grid-column: span 1;
        grid-row: span 3;
    }
}

/* Animation for portfolio items */
.portfolio-item {
    animation: fadeInUp 0.6s ease-out;
}

.portfolio-item:nth-child(1) { animation-delay: 0.1s; }
.portfolio-item:nth-child(2) { animation-delay: 0.2s; }
.portfolio-item:nth-child(3) { animation-delay: 0.3s; }
.portfolio-item:nth-child(4) { animation-delay: 0.4s; }
.portfolio-item:nth-child(5) { animation-delay: 0.5s; }