/* =================================================================
   TP RACE LEAGUE — Design tokens
   ================================================================= */

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

:root{

    /* superficie */
    --asphalt:#0a0a0c;
    --asphalt-soft:#131316;
    --panel:#17171b;
    --line:rgba(255,255,255,.08);

    /* categorias */
    --red:#e10600;
    --red-dim:#7a0500;
    --green:#00c853;
    --green-dim:#00521f;
    --blue:#0090ff;
    --blue-dim:#003c6b;

    /* acento neutro */
    --amber:#ffb300;

    /* texto */
    --ink:#f4f4f2;
    --ink-soft:#a8a8ad;
    --ink-faint:#65656b;

    /* tipografia */
    --display:'Oswald',sans-serif;
    --body:'Inter',sans-serif;

    --container:1320px;
}

html{
    scroll-behavior:smooth;
}

body{
    font-family:var(--body);
    background:var(--asphalt);
    color:var(--ink);
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
}

a{
    color:inherit;
}

img{
    max-width:100%;
    display:block;
}

::selection{
    background:var(--amber);
    color:#000;
}

:focus-visible{
    outline:2px solid var(--amber);
    outline-offset:3px;
}

/* film grain ambient texture, very subtle */
.grain{
    position:fixed;
    inset:0;
    z-index:9999;
    pointer-events:none;
    opacity:.025;
    mix-blend-mode:overlay;
    background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* =================================================================
   HEADER
   ================================================================= */

.topbar{
    position:fixed;
    top:0;
    left:0;
    right:0;
    z-index:200;
    height:84px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:0 40px;
    background:linear-gradient(to bottom, rgba(10,10,12,.85), transparent);
    transition:background .3s, height .3s;
}

.topbar.scrolled{
    background:rgba(10,10,12,.92);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
    height:68px;
}

.logo img{
    height:42px;
    width:auto;
    object-fit:contain;
}

.navbar{
    display:flex;
    gap:36px;
}

.navbar a{
    text-decoration:none;
    color:var(--ink-soft);
    font-family:var(--display);
    font-size:.92rem;
    letter-spacing:.04em;
    text-transform:uppercase;
    font-weight:500;
    position:relative;
    padding-bottom:6px;
    transition:color .25s;
}

.navbar a::after{
    content:"";
    position:absolute;
    left:0;
    bottom:0;
    width:0;
    height:2px;
    background:var(--amber);
    transition:width .25s;
}

.navbar a:hover,
.navbar a.active{
    color:var(--ink);
}

.navbar a:hover::after,
.navbar a.active::after{
    width:100%;
}

.nav-toggle{
    display:none;
    flex-direction:column;
    justify-content:center;
    gap:5px;
    width:36px;
    height:36px;
    background:none;
    border:none;
    cursor:pointer;
}

.nav-toggle span{
    display:block;
    height:2px;
    background:var(--ink);
    border-radius:1px;
}

/* =================================================================
   HERO
   ================================================================= */

.hero{
    position:relative;
    height:100vh;
    min-height:640px;
    display:flex;
    align-items:center;
    overflow:hidden;
}

.hero-bg{
    position:absolute;
    inset:0;
    background-size:cover;
    background-position:center 60%;
    transform:scale(1.05);
    animation:heroIn 1.6s ease-out forwards;
}

@keyframes heroIn{
    from{ transform:scale(1.12); filter:brightness(.7); }
    to{ transform:scale(1.05); filter:brightness(1); }
}

.hero-overlay{
    position:absolute;
    inset:0;
    background:
        linear-gradient(180deg, rgba(10,10,12,.55) 0%, rgba(10,10,12,.35) 40%, rgba(10,10,12,.95) 100%),
        linear-gradient(90deg, rgba(10,10,12,.75) 0%, rgba(10,10,12,.1) 55%);
}

.hero-raceline{
    position:absolute;
    inset:0;
    width:100%;
    height:100%;
    opacity:.35;
}

.hero-raceline path{
    fill:none;
    stroke:var(--amber);
    stroke-width:2;
    stroke-dasharray:14 10;
    animation:dash 40s linear infinite;
}

@keyframes dash{
    to{ stroke-dashoffset:-1000; }
}

.hero-content{
    position:relative;
    z-index:5;
    max-width:var(--container);
    margin:0 auto;
    padding:0 40px;
    width:100%;
}

.hero-eyebrow{
    display:inline-block;
    font-family:var(--display);
    text-transform:uppercase;
    letter-spacing:.18em;
    font-size:.8rem;
    color:var(--amber);
    margin-bottom:18px;
    opacity:0;
    animation:riseIn .7s ease-out .3s forwards;
}

.hero-content h1{
    font-family:var(--display);
    font-weight:700;
    font-size:clamp(3.2rem, 9vw, 7.5rem);
    line-height:.95;
    letter-spacing:-.01em;
    text-transform:uppercase;
    opacity:0;
    animation:riseIn .7s ease-out .45s forwards;
}

.hero-content h1 span{
    color:transparent;
    -webkit-text-stroke:2px var(--ink);
    display:block;
}

.hero-sub{
    margin-top:24px;
    max-width:480px;
    font-size:1.1rem;
    color:var(--ink-soft);
    line-height:1.5;
    opacity:0;
    animation:riseIn .7s ease-out .6s forwards;
}

.hero-actions{
    display:flex;
    gap:16px;
    margin-top:36px;
    opacity:0;
    animation:riseIn .7s ease-out .75s forwards;
}

@keyframes riseIn{
    from{ opacity:0; transform:translateY(16px); }
    to{ opacity:1; transform:translateY(0); }
}

.btn{
    display:inline-flex;
    align-items:center;
    padding:15px 30px;
    font-family:var(--display);
    font-size:.95rem;
    letter-spacing:.03em;
    text-transform:uppercase;
    text-decoration:none;
    border-radius:2px;
    transition:transform .25s, background .25s, color .25s;
}

.btn-primary{
    background:var(--red);
    color:#fff;
}

.btn-primary:hover{
    background:#ff1a12;
    transform:translateY(-2px);
}

.btn-ghost{
    border:1px solid rgba(255,255,255,.3);
    color:var(--ink);
}

.btn-ghost:hover{
    border-color:var(--ink);
    background:rgba(255,255,255,.06);
    transform:translateY(-2px);
}

.scroll-cue{
    position:absolute;
    bottom:36px;
    left:50%;
    transform:translateX(-50%);
    display:flex;
    flex-direction:column;
    align-items:center;
    gap:10px;
    z-index:5;
}

.scroll-cue span{
    font-family:var(--display);
    font-size:.7rem;
    letter-spacing:.18em;
    text-transform:uppercase;
    color:var(--ink-faint);
}

.scroll-line{
    width:1px;
    height:36px;
    background:linear-gradient(to bottom, var(--amber), transparent);
    animation:scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse{
    0%,100%{ opacity:.3; }
    50%{ opacity:1; }
}

/* =================================================================
   SPONSORS
   ================================================================= */

.sponsors-bar{
    background:var(--asphalt-soft);
    padding:28px 40px;
    display:flex;
    align-items:center;
    justify-content:center;
    gap:40px;
    flex-wrap:wrap;
    border-bottom:1px solid var(--line);
}

.sponsors-label{
    font-family:var(--display);
    font-size:.72rem;
    letter-spacing:.14em;
    text-transform:uppercase;
    color:var(--ink-faint);
    white-space:nowrap;
}

.sponsors-container{
    display:flex;
    align-items:center;
    justify-content:center;
    gap:42px;
    flex-wrap:wrap;
}

.sponsors-container img{
    max-height:34px;
    max-width:140px;
    width:auto;
    object-fit:contain;
    opacity:.65;
    filter:grayscale(1);
    transition:.3s;
}

.sponsors-container img:hover{
    opacity:1;
    filter:grayscale(0);
}

/* =================================================================
   SECTION HEAD (shared)
   ================================================================= */

.section-head{
    max-width:var(--container);
    margin:0 auto 48px;
    padding:0 40px;
}

.section-eyebrow{
    display:block;
    font-family:var(--display);
    font-size:.78rem;
    letter-spacing:.16em;
    text-transform:uppercase;
    color:var(--amber);
    margin-bottom:14px;
}

.section-head h2{
    font-family:var(--display);
    font-weight:600;
    font-size:clamp(2rem, 4vw, 2.8rem);
    text-transform:uppercase;
    letter-spacing:-.01em;
}

/* =================================================================
   CATEGORIAS
   ================================================================= */

.categories{
    padding:100px 0 110px;
}

.category-grid{
    max-width:var(--container);
    margin:0 auto;
    padding:0 40px;
    display:grid;
    grid-template-columns:repeat(auto-fit, minmax(260px, 1fr));
    gap:24px;
}

.category-card{
    position:relative;
    display:block;
    height:480px;
    border-radius:6px;
    overflow:hidden;
    text-decoration:none;
    border:1px solid var(--line);
}

.category-card img{
    position:absolute;
    inset:0;
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform .6s ease;
}

.category-card:hover img{
    transform:scale(1.08);
}

.category-shade{
    position:absolute;
    inset:0;
    background:linear-gradient(180deg, rgba(10,10,12,.1) 0%, rgba(10,10,12,.55) 55%, rgba(10,10,12,.97) 100%);
}

.category-card::before{
    content:"";
    position:absolute;
    top:0;
    left:0;
    right:0;
    height:5px;
    z-index:3;
    transition:height .3s;
}

.cat-gr86::before{ background:var(--red); }
.cat-tcr::before{ background:var(--green); }
.cat-gte::before{ background:var(--blue); }
.cat-gt3::before{ background:#ffd400; }
.cat-tcr::before{ background:#ffd400; }

.category-card:hover::before{
    height:9px;
}

.category-body{
    position:absolute;
    left:0;
    bottom:0;
    right:0;
    z-index:4;
    padding:32px;
}

.category-tag{
    display:inline-block;
    font-family:var(--display);
    font-size:.72rem;
    letter-spacing:.14em;
    text-transform:uppercase;
    color:var(--ink-soft);
    margin-bottom:10px;
}

.category-body h3{
    font-family:var(--display);
    font-size:2rem;
    font-weight:700;
    letter-spacing:-.01em;
    margin-bottom:10px;
}

.category-body p{
    color:var(--ink-soft);
    font-size:.92rem;
    margin-bottom:18px;
    max-width:280px;
}

.category-link{
    font-family:var(--display);
    font-size:.82rem;
    letter-spacing:.05em;
    text-transform:uppercase;
    opacity:0;
    transform:translateY(6px);
    transition:.3s;
    display:inline-block;
}

.cat-gr86 .category-link{ color:var(--red); }
.cat-tcr .category-link{ color:var(--green); }
.cat-gte .category-link{ color:var(--blue); }
.cat-gt3 .category-link{ color:#ffd400; }
.cat-tcr .category-link{ color:#ffd400; }

.category-card:hover .category-link{
    opacity:1;
    transform:translateY(0);
}

/* =================================================================
   PROXIMOS EVENTOS
   ================================================================= */

.next-events{
    padding:0 0 120px;
}

.events-grid{
    max-width:var(--container);
    margin:0 auto;
    padding:0 40px;
    display:grid;
    grid-template-columns:repeat(auto-fit, minmax(260px, 1fr));
    gap:24px;
}

.event-card{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:6px;
    overflow:hidden;
    transition:transform .3s, border-color .3s;
}

.event-card:hover{
    transform:translateY(-6px);
}

.event-image{
    height:190px;
    overflow:hidden;
}

.event-image img{
    width:100%;
    height:100%;
    object-fit:cover;
}

.event-info{
    padding:26px;
    border-top:3px solid transparent;
}

.event-gr86 .event-info{ border-color:var(--red); }
.event-tcr .event-info{ border-color:var(--green); }
.event-gte .event-info{ border-color:var(--blue); }
.event-gt3 .event-info{ border-color:#ffd400; }
.event-tcr .event-info{ border-color:#ffd400; }

.event-series{
    display:block;
    font-family:var(--display);
    font-size:.74rem;
    letter-spacing:.12em;
    text-transform:uppercase;
    color:var(--ink-faint);
    margin-bottom:10px;
}

.event-info h3{
    font-family:var(--display);
    font-size:1.6rem;
    font-weight:600;
    margin-bottom:8px;
}

.event-info p{
    color:var(--ink-soft);
    font-size:.88rem;
    margin-bottom:16px;
}

.event-info strong{
    display:inline-block;
    font-family:var(--display);
    font-size:1.1rem;
    color:var(--amber);
    letter-spacing:.02em;
}

/* =================================================================
   FOOTER
   ================================================================= */

footer{
    background:#000;
    border-top:1px solid var(--line);
    padding:60px 40px;
}

.footer-inner{
    max-width:var(--container);
    margin:0 auto;
    display:flex;
    flex-direction:column;
    align-items:center;
    gap:18px;
    text-align:center;
}

.footer-logo{
    height:38px;
    width:auto;
    opacity:.8;
}

.footer-inner p{
    color:var(--ink-faint);
    font-size:.88rem;
}

.footer-nav{
    display:flex;
    gap:28px;
    margin-top:6px;
}

.footer-nav a{
    text-decoration:none;
    color:var(--ink-soft);
    font-family:var(--display);
    font-size:.8rem;
    letter-spacing:.06em;
    text-transform:uppercase;
    transition:color .25s;
}

.footer-nav a:hover{
    color:var(--ink);
}

/* =================================================================
   RESPONSIVE
   ================================================================= */

@media(max-width:1000px){

    .category-grid,
    .events-grid{
        grid-template-columns:1fr;
    }

    .category-card{
        height:380px;
    }

}

@media(max-width:760px){

    .topbar{
        padding:0 20px;
        height:64px;
    }

    .logo img{
        height:32px;
    }

    .navbar{
        position:fixed;
        top:64px;
        left:0;
        right:0;
        flex-direction:column;
        background:rgba(10,10,12,.97);
        backdrop-filter:blur(10px);
        padding:24px 30px;
        gap:20px;
        border-bottom:1px solid var(--line);
        transform:translateY(-110%);
        transition:transform .3s;
    }

    .navbar.open{
        transform:translateY(0);
    }

    .nav-toggle{
        display:flex;
    }

    .hero-content{
        padding:0 24px;
    }

    .hero-sub{
        font-size:1rem;
    }

    .hero-actions{
        flex-direction:column;
        width:100%;
    }

    .btn{
        justify-content:center;
        width:100%;
    }

    .section-head{
        padding:0 24px;
        margin-bottom:32px;
    }

    .categories{
        padding:70px 0 80px;
    }

    .category-grid,
    .events-grid{
        padding:0 24px;
        gap:18px;
    }

    .next-events{
        padding:0 0 80px;
    }

    .sponsors-bar{
        flex-direction:column;
        gap:18px;
        padding:24px 20px;
    }

}

@media(prefers-reduced-motion: reduce){

    *{
        animation-duration:.01ms !important;
        animation-iteration-count:1 !important;
        transition-duration:.01ms !important;
        scroll-behavior:auto !important;
    }

}