*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

:root{
    --gte:#00a2ff;
    --bg:#050505;
    --card:#111111;
    --text:#ffffff;
}

body{
    background:var(--bg);
    color:var(--text);
    font-family:Arial, Helvetica, sans-serif;
}

/* HEADER */

.sub-header{
    padding:20px 30px;
    border-bottom:2px solid var(--gte);
}

.back-btn{
    color:white;
    text-decoration:none;
    font-weight:bold;
}

.back-btn:hover{
    color:var(--gte);
}

/* TITULO */

.page-title{
    text-align:center;
    padding:60px 20px;
}

.page-title h1{
    font-size:4rem;
    margin-bottom:10px;
}

.page-title p{
    color:#ccc;
    font-size:1.1rem;
}

/* CALENDARIO */

.calendar-grid{

    max-width:1400px;

    margin:0 auto;

    padding:20px;

    display:grid;

    grid-template-columns:
    repeat(auto-fit,minmax(450px,1fr));

    gap:30px;
}

.race-card{

    height:320px;

    border-radius:12px;

    overflow:hidden;

    border:2px solid var(--gte);

    background-size:cover;
    background-position:center;

    position:relative;

    transition:.3s;
}

.race-card:hover{

    transform:translateY(-5px);
}

.race-overlay{

    position:absolute;

    inset:0;

    display:flex;

    align-items:flex-end;

    background:
    linear-gradient(
        transparent,
        rgba(0,0,0,.85)
    );
}

.race-info{

    width:100%;

    padding:25px;
}

.race-info span{

    color:var(--gte);

    font-weight:bold;

    font-size:.95rem;
}

.race-info h2{

    font-size:2.2rem;

    margin:10px 0;
}

.race-info p{

    color:#ddd;

    margin-bottom:20px;
}

.results-btn{

    background:var(--gte);

    color:black;

    border:none;

    padding:12px 22px;

    border-radius:6px;

    font-weight:bold;

    cursor:pointer;

    transition:.2s;
}

.results-btn:hover{

    opacity:.9;
}

.results-btn.disabled{

    background:#333;

    color:#aaa;

    cursor:default;
}

.results-btn.disabled:hover{

    opacity:1;
}

/* MOBILE */

@media(max-width:768px){

    .page-title h1{

        font-size:2.5rem;
    }

    .calendar-grid{

        grid-template-columns:1fr;
    }

    .race-card{

        height:260px;
    }

    .race-info h2{

        font-size:1.8rem;
    }

}