@import url('https://fonts.googleapis.com/css?family=Roboto+Condensed&display=swap');
@import url('https://fonts.googleapis.com/css?family=Roboto&display=swap');
body{background-color:white;margin:0;font-family:'Roboto Condensed',sans-serif;color:#333}
.principal{max-width:1300px;margin:auto;padding:15px;text-align:center}
.principal img{max-width:100%;height:auto}
h2{font-family:'Roboto',sans-serif}
hr{border:0;border-top:1px solid #eee;margin:20px 0}
p{line-height:1.6;text-align:justify}
.grid-container{display:flex;flex-wrap:wrap;justify-content:center;margin:0 -8px}
.column{padding:8px;box-sizing:border-box;display:none}
.show{display:block}
.card{background-color:white;border-radius:10px;box-shadow:0 4px 15px rgba(0,0,0,0.1);cursor:pointer;position:relative;height:400px;display:flex;flex-direction:column;transition:transform .3s,box-shadow .3s;overflow:hidden}
.card:hover{transform:translateY(-5px);box-shadow:0 8px 25px rgba(0,0,0,0.15)}
.card-link{text-decoration:none;color:inherit;display:flex;flex-direction:column;height:100%}
.card-top{width:100%;height:270px;background-color:#f1f1f1;flex-shrink:0}
.card-top img{width:100%;height:100%;object-fit:cover;transition:filter .3s}
.card:hover
.card-top img{filter:grayscale(100%)}
.card-mid{padding:20px;position:absolute;left:0;right:0;bottom:0;height:90px;background-color:white;border-top:1px solid #eee;transition:height .4s cubic-bezier(0.175,0.885,0.32,1.275)}
.card-mid h4{margin:0 0 10px 0;font-family:'Roboto',sans-serif;font-size:18px}
.card-mid 
.card-desc{margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;text-overflow:ellipsis;color:grey;font-size:14px;transition:border-left .3s .2s}
.card:hover .card-desc{border-left:2px solid #b4deac;padding-left:8px}
#myBtnContainer{margin:20px 0;display:flex;flex-wrap:wrap;justify-content:center;gap:10px}
.btn{border:1px solid #ccc;outline:none;padding:12px 16px;background-color:white;cursor:pointer;border-radius:5px;transition:background-color .2s,color .2s;font-size:14px;line-height:1.2}
.btn:hover{background-color:#f0f0f0;border-color:#bbb}
.btn.active{background-color:#666;color:white;border-color:#666}
.column{width:33.333%}
@media (max-width:1024px){.column{width:50%}}
@media (max-width:600px){.column{width:100%}.principal{padding:10px}h2{font-size:1.5em}.card{height:340px}.card-top{height:250px}}