/* ============================================================
   OVERQUIZ — feuille de style unique
   Charte Nexus : cyan / magenta / violet sur noir profond
   ============================================================ */

:root{
  --cyan:#00E5FF;
  --magenta:#FF2D9B;
  --violet:#8B5CF6;

  --bg:#07070E;
  --bg-2:#0C0C18;
  --panel:#11111F;
  --panel-2:#161628;
  --line:rgba(255,255,255,.10);
  --line-2:rgba(255,255,255,.06);

  --txt:#EDEDF7;
  --txt-2:#A8A8C0;
  --txt-3:#6E6E8C;

  --ff-title:'Bruno Ace SC', 'Manrope', system-ui, sans-serif;
  --ff-body:'Manrope', system-ui, -apple-system, sans-serif;
  --ff-mono:'JetBrains Mono', ui-monospace, Consolas, monospace;

  --wrap:1180px;
  --r:14px;
}

*,*::before,*::after{box-sizing:border-box;}

html{scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--bg);
  color:var(--txt);
  font-family:var(--ff-body);
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

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

a{color:var(--cyan);text-decoration:none;}
a:hover{text-decoration:underline;}

.wrap{width:min(var(--wrap), calc(100% - 44px));margin-inline:auto;}

/* ---------- typographie ---------- */
h1,h2,h3,h4{font-family:var(--ff-title);font-weight:400;letter-spacing:.02em;line-height:1.12;margin:0;}
h1{font-size:clamp(2.6rem, 7vw, 5rem);}
h2{font-size:clamp(1.7rem, 3.6vw, 2.7rem);}
h3{font-size:clamp(1.1rem, 2vw, 1.35rem);}
p{margin:0 0 1.1em;}

.kicker{
  font-family:var(--ff-mono);
  font-size:.72rem;
  letter-spacing:.32em;
  text-transform:uppercase;
  color:var(--cyan);
  margin-bottom:1.1rem;
}
.lead{font-size:clamp(1.05rem,1.6vw,1.25rem);color:var(--txt-2);max-width:62ch;}
.grad{
  background:linear-gradient(96deg,var(--cyan) 0%,var(--violet) 45%,var(--magenta) 100%);
  -webkit-background-clip:text;background-clip:text;
  color:transparent;
}
.mono{font-family:var(--ff-mono);}

/* ---------- boutons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.6rem;
  font-family:var(--ff-mono);font-size:.82rem;letter-spacing:.14em;text-transform:uppercase;
  padding:1rem 1.7rem;border-radius:999px;border:1px solid transparent;
  cursor:pointer;transition:transform .18s ease, box-shadow .18s ease, background .18s ease;
  text-decoration:none;
}
.btn:hover{text-decoration:none;transform:translateY(-2px);}
.btn-primary{
  background:linear-gradient(96deg,var(--cyan),var(--violet) 60%,var(--magenta));
  color:#06060C;font-weight:700;
  box-shadow:0 0 0 rgba(0,229,255,0);
}
.btn-primary:hover{box-shadow:0 10px 40px -8px rgba(139,92,246,.65);}
.btn-ghost{border-color:var(--line);color:var(--txt);background:rgba(255,255,255,.02);}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);}

/* ---------- nav ---------- */
.nav{
  position:sticky;top:0;z-index:80;
  backdrop-filter:blur(14px);
  background:rgba(7,7,14,.72);
  border-bottom:1px solid var(--line-2);
}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:70px;}
.logo{display:flex;align-items:center;gap:.7rem;text-decoration:none;}
.logo:hover{text-decoration:none;}
.logo-mark{
  width:26px;height:26px;border-radius:50%;
  background:radial-gradient(circle at 35% 35%, var(--cyan), var(--violet) 55%, var(--magenta));
  box-shadow:0 0 18px rgba(139,92,246,.7);
  flex:none;
}
.logo-txt{font-family:var(--ff-title);font-size:1.12rem;letter-spacing:.16em;color:var(--txt);}
.nav-links{display:flex;align-items:center;gap:1.9rem;}
.nav-links a{
  font-family:var(--ff-mono);font-size:.76rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--txt-2);text-decoration:none;
}
.nav-links a:hover{color:var(--cyan);text-decoration:none;}
.nav-links .btn{padding:.7rem 1.2rem;}
.burger{display:none;background:none;border:0;color:var(--txt);font-size:1.5rem;cursor:pointer;padding:.2rem .4rem;}

@media (max-width:860px){
  .nav-links{
    position:fixed;inset:70px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;
    background:var(--bg-2);border-bottom:1px solid var(--line);
    padding:.6rem 22px 1.4rem;display:none;
  }
  .nav-links.open{display:flex;}
  .nav-links a{padding:.95rem 0;border-bottom:1px solid var(--line-2);}
  .nav-links .btn{margin-top:1rem;justify-content:center;}
  .burger{display:block;}
}

/* ---------- hero ---------- */
.hero{position:relative;padding:clamp(4rem,10vw,8rem) 0 clamp(3.5rem,7vw,6rem);overflow:hidden;}
.hero::before{
  content:'';position:absolute;inset:-30% -10% auto -10%;height:120%;
  background:
    radial-gradient(46% 40% at 78% 18%, rgba(0,229,255,.18), transparent 70%),
    radial-gradient(44% 42% at 16% 72%, rgba(255,45,155,.16), transparent 70%),
    radial-gradient(50% 40% at 50% 40%, rgba(139,92,246,.14), transparent 70%);
  pointer-events:none;
}
.hero::after{
  content:'';position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(var(--line-2) 1px, transparent 1px),
                   linear-gradient(90deg, var(--line-2) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(70% 60% at 50% 40%, #000 30%, transparent 100%);
}
.hero .wrap{position:relative;z-index:2;}
.hero h1{margin-bottom:1.2rem;}
.hero-sub{font-size:clamp(1.05rem,1.9vw,1.35rem);color:var(--txt-2);max-width:56ch;margin-bottom:2.2rem;}
.hero-cta{display:flex;flex-wrap:wrap;gap:1rem;margin-bottom:3rem;}
.hero-facts{display:flex;flex-wrap:wrap;gap:.7rem;}
.chip{
  font-family:var(--ff-mono);font-size:.74rem;letter-spacing:.1em;
  padding:.55rem 1rem;border:1px solid var(--line);border-radius:999px;color:var(--txt-2);
  background:rgba(255,255,255,.02);
}

/* ---------- bandeau d'annonce ---------- */
.ribbon{
  background:linear-gradient(96deg, rgba(0,229,255,.14), rgba(255,45,155,.14));
  border-block:1px solid var(--line);
}
.ribbon-in{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:.9rem;
  padding:.85rem 0;font-family:var(--ff-mono);font-size:.78rem;letter-spacing:.1em;color:var(--txt);
  text-align:center;
}
.ribbon-in b{color:var(--cyan);}

/* ---------- sections ---------- */
section{padding:clamp(3.5rem,7vw,6.5rem) 0;}
.sec-head{max-width:70ch;margin-bottom:3rem;}
.sec-head h2{margin-bottom:1rem;}

.alt{background:var(--bg-2);border-block:1px solid var(--line-2);}

/* ---------- grilles ---------- */
.grid{display:grid;gap:1.4rem;}
.g2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));}
.g3{grid-template-columns:repeat(auto-fit,minmax(268px,1fr));}
.g4{grid-template-columns:repeat(auto-fit,minmax(215px,1fr));}

.card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:1.7rem 1.6rem;
  position:relative;
  transition:border-color .2s ease, transform .2s ease;
}
.card:hover{border-color:rgba(0,229,255,.4);transform:translateY(-3px);}
.card h3{margin-bottom:.7rem;}
.card p{color:var(--txt-2);font-size:.95rem;margin-bottom:0;}
.card .num{
  font-family:var(--ff-mono);font-size:.72rem;letter-spacing:.2em;color:var(--magenta);
  display:block;margin-bottom:.9rem;
}

/* étapes de jeu */
.round{
  background:linear-gradient(180deg, var(--panel) 0%, var(--panel-2) 100%);
  border:1px solid var(--line);border-radius:var(--r);
  padding:1.7rem 1.6rem;position:relative;overflow:hidden;
}
.round::before{
  content:'';position:absolute;inset:0 auto 0 0;width:3px;
  background:linear-gradient(180deg,var(--cyan),var(--magenta));
}
.round .rn{
  font-family:var(--ff-mono);font-size:.72rem;letter-spacing:.2em;color:var(--cyan);
  display:block;margin-bottom:.8rem;
}
.round h3{margin-bottom:.55rem;}
.round p{color:var(--txt-2);font-size:.94rem;margin-bottom:0;}
.round .dur{
  position:absolute;top:1.5rem;right:1.5rem;
  font-family:var(--ff-mono);font-size:.7rem;color:var(--txt-3);
}

/* ---------- NEXA ---------- */
.nexa{display:grid;grid-template-columns:minmax(220px,300px) 1fr;gap:clamp(2rem,5vw,4rem);align-items:center;}
@media (max-width:760px){.nexa{grid-template-columns:1fr;}}
.orb{
  aspect-ratio:1;border-radius:50%;position:relative;
  background:
    radial-gradient(circle at 38% 34%, rgba(0,229,255,.9), transparent 46%),
    radial-gradient(circle at 66% 68%, rgba(255,45,155,.85), transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(139,92,246,.55), transparent 72%);
  box-shadow:0 0 90px -12px rgba(139,92,246,.75), inset 0 0 60px rgba(0,229,255,.22);
  animation:pulse 5.5s ease-in-out infinite;
}
.orb::after{
  content:'';position:absolute;inset:14%;border-radius:50%;
  border:1px solid rgba(255,255,255,.16);
  animation:pulse 5.5s ease-in-out infinite reverse;
}
@keyframes pulse{
  0%,100%{transform:scale(1);opacity:.92;}
  50%{transform:scale(1.06);opacity:1;}
}
@media (prefers-reduced-motion:reduce){
  .orb,.orb::after{animation:none;}
  html{scroll-behavior:auto;}
}

/* ---------- infos pratiques ---------- */
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--r);overflow:hidden;}
.fact{background:var(--panel);padding:1.7rem 1.4rem;}
.fact .k{font-family:var(--ff-mono);font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;color:var(--txt-3);margin-bottom:.6rem;}
.fact .v{font-family:var(--ff-title);font-size:1.5rem;color:var(--txt);line-height:1.15;}
.fact .n{font-size:.84rem;color:var(--txt-2);margin-top:.45rem;}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line);}
.faq details{border-bottom:1px solid var(--line);}
.faq summary{
  cursor:pointer;list-style:none;padding:1.25rem 2.5rem 1.25rem 0;position:relative;
  font-family:var(--ff-body);font-weight:600;font-size:1.02rem;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{
  content:'+';position:absolute;right:.4rem;top:1.05rem;color:var(--cyan);
  font-family:var(--ff-mono);font-size:1.3rem;transition:transform .2s ease;
}
.faq details[open] summary::after{transform:rotate(45deg);}
.faq .a{padding:0 2.5rem 1.4rem 0;color:var(--txt-2);font-size:.96rem;}
.faq .a p:last-child{margin-bottom:0;}

/* ---------- formulaire ---------- */
.form{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r);
  padding:clamp(1.6rem,3vw,2.4rem);
}
.field{margin-bottom:1.2rem;}
.field label{
  display:block;font-family:var(--ff-mono);font-size:.7rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--txt-3);margin-bottom:.5rem;
}
.field input,.field select,.field textarea{
  width:100%;padding:.9rem 1rem;border-radius:10px;
  background:var(--bg);border:1px solid var(--line);color:var(--txt);
  font-family:var(--ff-body);font-size:1rem;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(0,229,255,.14);
}
.field textarea{min-height:120px;resize:vertical;}
.field .hint{font-size:.8rem;color:var(--txt-3);margin-top:.4rem;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem;}
@media (max-width:620px){.form-row{grid-template-columns:1fr;}}
.form-msg{
  margin-top:1rem;padding:.9rem 1.1rem;border-radius:10px;font-size:.92rem;display:none;
}
.form-msg.ok{display:block;background:rgba(0,229,255,.10);border:1px solid rgba(0,229,255,.35);color:var(--txt);}
.form-msg.err{display:block;background:rgba(255,45,155,.10);border:1px solid rgba(255,45,155,.35);color:var(--txt);}

/* ---------- tableau ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);}
table{width:100%;border-collapse:collapse;font-size:.94rem;min-width:520px;}
th{
  text-align:left;padding:1rem 1.2rem;background:var(--panel-2);
  font-family:var(--ff-mono);font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--txt-2);
  border-bottom:1px solid var(--line);
}
td{padding:1rem 1.2rem;border-bottom:1px solid var(--line-2);color:var(--txt-2);vertical-align:top;}
tr:last-child td{border-bottom:0;}
td strong{color:var(--txt);}

/* ---------- CTA final ---------- */
.cta{
  border:1px solid var(--line);border-radius:20px;
  background:
    radial-gradient(70% 120% at 20% 0%, rgba(0,229,255,.14), transparent 60%),
    radial-gradient(70% 120% at 90% 100%, rgba(255,45,155,.14), transparent 60%),
    var(--panel);
  padding:clamp(2.2rem,5vw,3.6rem);
  text-align:center;
}
.cta h2{margin-bottom:1rem;}
.cta p{color:var(--txt-2);max-width:56ch;margin-inline:auto;}
.cta .btns{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;margin-top:1.8rem;}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:3.5rem 0 2.5rem;background:var(--bg-2);}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:2.5rem;margin-bottom:2.5rem;}
@media (max-width:760px){.foot-grid{grid-template-columns:1fr;gap:2rem;}}
.foot-grid h4{font-family:var(--ff-mono);font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:var(--txt-3);margin-bottom:1rem;}
.foot-grid a,.foot-grid p{color:var(--txt-2);font-size:.92rem;display:block;margin-bottom:.5rem;text-decoration:none;}
.foot-grid a:hover{color:var(--cyan);}
.foot-bar{
  border-top:1px solid var(--line-2);padding-top:1.6rem;
  display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;
  font-family:var(--ff-mono);font-size:.72rem;color:var(--txt-3);letter-spacing:.06em;
}

/* ---------- divers ---------- */
.soon{
  display:inline-block;font-family:var(--ff-mono);font-size:.64rem;letter-spacing:.18em;
  text-transform:uppercase;padding:.28rem .6rem;border-radius:6px;
  background:rgba(255,45,155,.14);border:1px solid rgba(255,45,155,.35);color:var(--magenta);
  margin-left:.6rem;vertical-align:middle;
}
.center{text-align:center;}
.mt-2{margin-top:2rem;}
.small{font-size:.86rem;color:var(--txt-3);}