@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes skillBarFill {
    from { width: 0; }
    to { width: var(--skill-level); }
}

.skill-card {
    animation: fadeIn 0.6s ease-out forwards;
    opacity: 0;
}

.project-card {
    animation: fadeIn 0.8s ease-out forwards;
    opacity: 0;
    transition: transform 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
}

.skill-bar {
    position: relative;
    height: 8px;
    background-color: #FFE4E1;
    border-radius: 4px;
    overflow: hidden;
}

.skill-bar-fill {
    position: absolute;
    height: 100%;
    background-color: #FF69B4;
    border-radius: 4px;
    animation: skillBarFill 1s ease-out forwards;
}

.tech-tag {
    background-color: #FFC0CB;
    color: #4A4A4A;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.875rem;
    transition: background-color 0.3s ease;
}

.tech-tag:hover {
    background-color: #FF69B4;
    color: white;
}

.contact-link {
    transition: transform 0.3s ease;
}

.contact-link:hover {
    transform: scale(1.05);
}

/* 반응형 디자인을 위한 미디어 쿼리 */
@media (max-width: 768px) {
    .skill-card, .project-card {
        margin-bottom: 1.5rem;
    }
}