.category-title {
    font-size: 2.2rem;
    color: var(--color-white);
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--color-blue);
    display: inline-block;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 2rem;
}

.work-card {
    background-color: #0d1117; /* Darkest Navy */
    border: 1px solid #30363d;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

.card-label {
    color: #8b949e;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.card-id {
    color: #2f81f7; /* Bright Blue */
    font-size: 2.6rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.card-desc {
    color: #c9d1d9;
    font-size: 1.1rem;
    line-height: 1.5;
    margin-bottom: 2rem;
}

.proof-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.proof-btn {
    background-color: #21262d;
    color: #ffffff;
    text-decoration: none;
    padding: 0.7rem 1.2rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-width: 130px;
    transition: all 0.3s ease;
    border: 1px solid #30363d;
}

.proof-btn i {
    font-size: 0.75rem;
    margin-left: 10px;
    color: #8b949e;
}

/* Hover State - Only the button changes */
.proof-btn:hover {
    background-color: #2f81f7;
    border-color: #2f81f7;
    transform: translateY(-2px);
}

.proof-btn:hover i {
    color: #ffffff;
}

/* Responsive adjustment */
@media screen and (max-width: 600px) {
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
}