/* Mavi Karting — feuille de personnalisation (complète Tailwind CDN) */

:root{
  --racing-bg:#101014;
  --racing-panel:#17171d;
  --racing-panel-2:#1e1e26;
  --racing-red:#e10600;
  --racing-red-soft:#ff4d40;
  --racing-anthracite:#2a2a32;
  --racing-line:#33333d;
  --racing-white:#f5f3ef;
  --racing-grey:#a7a7b0;
  --racing-grey-dim:#76767f;
}

*{box-sizing:border-box}

html{scroll-behavior:smooth}

body{
  background-color:var(--racing-bg);
  color:var(--racing-white);
  font-family:'Inter',system-ui,sans-serif;
  font-size:17px;
  line-height:1.75;
  margin:0;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4,.font-display{
  font-family:'Space Grotesk','Inter',sans-serif;
  letter-spacing:-0.02em;
  line-height:1.12;
}

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

a{color:inherit}

/* Texture damier discrète en arrière-plan */
.checker-bg{
  background-image:
    linear-gradient(135deg,#15151b 25%,transparent 25%),
    linear-gradient(225deg,#15151b 25%,transparent 25%),
    linear-gradient(45deg,#15151b 25%,transparent 25%),
    linear-gradient(315deg,#15151b 25%,#101014 25%);
  background-size:22px 22px;
  background-position:11px 0,11px 0,0 0,0 0;
}

/* ===== Header sticky ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(16,16,20,.78);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .3s ease,background .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{
  border-bottom-color:var(--racing-line);
  box-shadow:0 6px 24px rgba(0,0,0,.4);
  background:rgba(13,13,17,.94);
}

.nav-link{
  position:relative;
  color:var(--racing-grey);
  font-weight:500;
  text-decoration:none;
  transition:color .2s ease;
}
.nav-link:hover,.nav-link[aria-current="page"]{color:var(--racing-white)}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;bottom:-6px;
  height:2px;width:0;
  background:var(--racing-red);
  transition:width .25s ease;
}
.nav-link:hover::after,.nav-link[aria-current="page"]::after{width:100%}

/* Bouton burger */
#burger span{
  display:block;width:24px;height:2px;background:var(--racing-white);
  margin:5px 0;transition:transform .3s ease,opacity .3s ease;
}
#burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
#burger.open span:nth-child(2){opacity:0}
#burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== Boutons ===== */
.btn-red{
  display:inline-block;
  background:var(--racing-red);
  color:#fff;
  font-weight:600;
  padding:.8rem 1.6rem;
  border-radius:.4rem;
  text-decoration:none;
  border:1px solid var(--racing-red);
  transition:transform .15s ease,background .2s ease,box-shadow .2s ease;
}
.btn-red:hover{background:#c10500;transform:translateY(-2px);box-shadow:0 8px 22px rgba(225,6,0,.35)}
.btn-ghost{
  display:inline-block;
  border:1px solid var(--racing-line);
  color:var(--racing-white);
  font-weight:600;
  padding:.8rem 1.6rem;
  border-radius:.4rem;
  text-decoration:none;
  transition:border-color .2s ease,color .2s ease;
}
.btn-ghost:hover{border-color:var(--racing-red);color:var(--racing-red-soft)}

/* ===== Contenu d'article ===== */
.prose-racing p{margin:0 0 1.3rem;color:#d6d6da}
.prose-racing h2{font-size:1.7rem;margin:2.6rem 0 1rem;color:var(--racing-white)}
.prose-racing h3{font-size:1.28rem;margin:2rem 0 .7rem;color:var(--racing-white)}
.prose-racing ul{margin:0 0 1.4rem;padding-left:1.2rem;color:#d6d6da}
.prose-racing li{margin:.45rem 0}
.prose-racing a{color:var(--racing-red-soft);text-decoration:underline;text-underline-offset:3px;transition:color .2s}
.prose-racing a:hover{color:#fff}
.prose-racing blockquote{
  border-left:3px solid var(--racing-red);
  padding:.4rem 0 .4rem 1.2rem;
  margin:1.8rem 0;
  color:var(--racing-grey);
  font-style:italic;
}

/* Lien interne accent au survol */
.link-internal{color:var(--racing-red-soft);text-decoration:underline;text-underline-offset:3px}
.link-internal:hover{color:#fff}

/* Cartes */
.card{
  background:var(--racing-panel);
  border:1px solid var(--racing-line);
  border-radius:.7rem;
  overflow:hidden;
  transition:transform .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--racing-red)}

.tag{
  display:inline-block;
  font-size:.72rem;
  font-weight:600;
  letter-spacing:.06em;
  text-transform:uppercase;
  color:var(--racing-red-soft);
  background:rgba(225,6,0,.1);
  border:1px solid rgba(225,6,0,.3);
  padding:.2rem .6rem;
  border-radius:999px;
}

/* Hero overlay */
.hero-overlay{
  background:linear-gradient(180deg,rgba(16,16,20,.45) 0%,rgba(16,16,20,.82) 75%,var(--racing-bg) 100%);
}

/* Formulaire */
.field{
  width:100%;
  background:var(--racing-panel-2);
  border:1px solid var(--racing-line);
  color:var(--racing-white);
  padding:.8rem 1rem;
  border-radius:.4rem;
  font-family:inherit;
  font-size:1rem;
}
.field::placeholder{color:var(--racing-grey-dim)}
.field:focus{outline:none;border-color:var(--racing-red)}

/* Footer social */
.social-ic{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:50%;
  border:1px solid var(--racing-line);
  color:var(--racing-grey);
  transition:all .2s ease;
}
.social-ic:hover{border-color:var(--racing-red);color:var(--racing-red-soft);transform:translateY(-2px)}

/* Mobile menu */
#mobile-menu{display:none}
#mobile-menu.open{display:block}

@media (max-width:767px){
  body{font-size:16px}
  .prose-racing h2{font-size:1.45rem}
}