.csharp {
    color: white;
    background: darkgreen;
    opacity: 0.3;
}

.java {
    color: white;
    background: darkred;
    opacity: 0.3;
}

.sonstiges {
    color: white;
    background: grey;
    opacity: 0.3;
}

/* Accordion Styles for Portfolio */
.project-card {
    margin-bottom: 15px;
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: 5px;
    overflow: hidden;
}

.project-card__header {
    background: transparent;
}

.project-card__toggle {
    cursor: pointer;
    padding: 15px;
    margin: 0;
    transition: background-color 0.3s ease;
    align-items: center;
}

.project-card__toggle:hover {
    background-color: rgba(0,0,0,0.03);
}

.project-card__toggle .project-card__img {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60px;
    font-weight: bold;
    border-radius: 5px;
}

.project-card__toggle .project-card__info {
    position: relative;
    padding-right: 30px;
}

.project-card__toggle .project-card__title {
    margin-bottom: 5px;
}

.project-card__toggle .project-card__meta {
    margin-bottom: 8px;
    font-size: 0.9em;
    color: #666;
}

.project-card__toggle .project-card__description {
    margin-bottom: 0;
    font-size: 0.95em;
    color: #444;
    line-height: 1.4;
}

.project-card__expand-icon {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
}

.project-card__expand-icon::before,
.project-card__expand-icon::after {
    content: '';
    position: absolute;
    background-color: #333;
    transition: transform 0.3s ease;
}

.project-card__expand-icon::before {
    width: 2px;
    height: 14px;
    left: 9px;
    top: 3px;
}

.project-card__expand-icon::after {
    width: 14px;
    height: 2px;
    left: 3px;
    top: 9px;
}

.project-card__toggle[aria-expanded="true"] .project-card__expand-icon::before {
    transform: rotate(90deg);
}

.project-card__collapse {
    border-top: 1px solid rgba(0,0,0,0.1);
}

.project-card__body {
    padding: 20px;
    background-color: #f9f9f9;
}

.project-card__detail {
    margin-bottom: 15px;
}

.project-card__detail strong {
    display: inline-block;
    min-width: 120px;
}

.project-card__jobs {
    list-style: square inside;
    margin-left: 120px;
    margin-bottom: 15px;
}

.project-card__stack {
    margin-top: 20px;
}

.project-card__stack-title {
    font-weight: bold;
    margin-bottom: 10px;
}

.project-card__link {
    margin-top: 15px;
}

.project-card__link a {
    color: #007bff;
}

.project-card__link a:hover {
    text-decoration: underline;
}

/* Mobile responsive */
@media (max-width: 768px) {
    .project-card__toggle .project-card__img {
        margin-bottom: 10px;
    }

    .project-card__jobs {
        margin-left: 0;
    }

    .project-card__detail strong {
        display: block;
        min-width: auto;
        margin-bottom: 5px;
    }
}