/* 项目展示 */
.projects {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.project-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.project-img {
    height: 200px;
    background: var(--accent-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
}

.project-content {
    padding: 20px;
}

.project-title {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.project-desc {
    color: var(--text-secondary);
    margin-bottom: 15px;
    font-size: 0.95rem;
}

.project-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.project-tag {
    padding: 4px 10px;
    background: rgba(52, 152, 219, 0.1);
    border-radius: 4px;
    font-size: 0.8rem;
    color: var(--accent-color);
}

.toggle-btn {
    padding: 12px 30px;
    background: var(--bg-secondary);
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.toggle-btn:hover {
    background: var(--accent-color);
    color: var(--bg-secondary);
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(52, 152, 219, 0.4);
}