/* ==============================================
   Portfolio Page
   ============================================== */

/* --- Portfolio Grid --- */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}

.portfolio-card {
    overflow: hidden;
    padding: 0;
    text-decoration: none;
    color: inherit;
}

.portfolio-card .card-thumb {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    background: var(--bg-tertiary);
    overflow: hidden;
}

.portfolio-card .card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    transition: transform var(--transition-base);
}

.portfolio-card .card-thumb-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.1);
    transition: background var(--transition-base);
}

.portfolio-card:hover .card-thumb img {
    transform: scale(1.03);
}

.portfolio-card:hover .card-thumb-overlay {
    background: rgba(0, 0, 0, 0.4);
}

/* Placeholder for no-image */
.card-thumb-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    font-size: 2rem;
    color: var(--text-tertiary);
}

.portfolio-card .card-body {
    padding: var(--space-xl);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.portfolio-card .card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.portfolio-card .card-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.7;
    flex-grow: 1;
}

.portfolio-card .card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-top: var(--space-lg);
}

.portfolio-tag {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    font-size: 0.75rem;
    background: var(--tag-bg);
    color: var(--tag-text);
    border-radius: 4px;
}

.portfolio-card .card-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    margin-top: var(--space-md);
    font-size: var(--font-size-sm);
    color: var(--accent);
    font-weight: 500;
    transition: gap var(--transition-fast);
}

.portfolio-card .card-link:hover {
    gap: var(--space-sm);
}

.portfolio-card .card-link-btn {
    position: absolute;
    bottom: 50%;
    left: 50%;
    transform: translate(-50%, 50%);
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0.6rem 1.2rem;
    font-size: var(--font-size-sm);
    color: #fff;
    background: rgba(0, 0, 0, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 6px;
    text-decoration: none;
    opacity: 0;
    transition: opacity var(--transition-base), background var(--transition-fast);
    z-index: 2;
}

.portfolio-card:hover .card-link-btn {
    opacity: 1;
}

.portfolio-card .card-link-btn:hover {
    background: rgba(0, 0, 0, 0.85);
    border-color: rgba(255, 255, 255, 0.4);
}

/* --- Empty State --- */
.portfolio-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--space-4xl) var(--space-xl);
    color: var(--text-tertiary);
}

.portfolio-empty i {
    font-size: 3rem;
    margin-bottom: var(--space-lg);
    display: block;
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
}