/* =====================================================================
   COINVERA EXCHANGE — Feuille de style principale
   Thème : sombre, moderne, glassmorphism, dégradés néon
   ===================================================================== */

/* ------------------------------ Tokens ----------------------------- */
:root{
  --bg:            #07070d;
  --bg-2:          #0c0c15;
  --surface:       rgba(240,225,180,.045);
  --surface-2:     rgba(240,225,180,.08);
  --stroke:        rgba(216,196,140,.14);
  --stroke-strong: rgba(216,196,140,.26);

  --txt:      #f4efe2;
  --txt-dim:  #b8ae94;
  --txt-mute: #7f7660;

  --brand:    #c9a24b;   /* or */
  --brand-2:  #e8cf8f;   /* champagne */
  --accent:   #d9b25a;   /* bronze clair */
  --gold:     #f2dd97;
  --danger:   #e0685f;
  --green:    #6fbf73;

  --grad-brand: linear-gradient(120deg,#a9791f 0%,#e6c877 46%,#f7ead0 100%);
  --grad-soft:  linear-gradient(135deg,rgba(201,162,75,.20),rgba(232,207,143,.10));

  --radius:   18px;
  --radius-sm:12px;
  --radius-lg:28px;

  --shadow:   0 24px 70px -22px rgba(0,0,0,.8);
  --glow:     0 0 44px -8px rgba(201,162,75,.6);

  --maxw: 1200px;
  --font: "Inter","Segoe UI",system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;
}

/* ------------------------------ Reset ------------------------------ */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--txt);
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img,svg,canvas{display:block;max-width:100%}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,select,textarea{font-family:inherit}

/* Background ambience */
body::before{
  content:"";position:fixed;inset:0;z-index:-2;
  background:
    radial-gradient(900px 620px at 15% -5%, rgba(201,162,75,.20), transparent 60%),
    radial-gradient(820px 520px at 100% 0%, rgba(232,207,143,.13), transparent 55%),
    radial-gradient(760px 720px at 50% 122%, rgba(120,140,180,.10), transparent 60%),
    var(--bg);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:linear-gradient(rgba(216,196,140,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(216,196,140,.035) 1px,transparent 1px);
  background-size:54px 54px;
  mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 75%);
}

/* ----------------------------- Layout ------------------------------ */
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:24px}
section{position:relative}
.section{padding:96px 0}
.section-sm{padding:64px 0}
.center{text-align:center}
.grad-text{
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;
  color:transparent;
}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.72rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;
  color:var(--brand-2);
  padding:6px 14px;border:1px solid var(--stroke);border-radius:999px;
  background:var(--surface);
}
h1,h2,h3{line-height:1.1;letter-spacing:-.02em;font-weight:800}
h1{font-size:clamp(2.4rem,6vw,4.4rem)}
h2{font-size:clamp(1.9rem,4vw,3rem)}
h3{font-size:1.25rem;letter-spacing:-.01em}
.lead{font-size:clamp(1.02rem,2vw,1.2rem);color:var(--txt-dim);max-width:60ch}

/* ------------------------------ Nav -------------------------------- */
.nav{
  position:sticky;top:0;z-index:60;
  backdrop-filter:blur(14px);
  background:rgba(5,7,14,.55);
  border-bottom:1px solid transparent;
  transition:.3s;
}
.nav.scrolled{background:rgba(5,7,14,.82);border-color:var(--stroke)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem;letter-spacing:-.02em}
.brand .logo{width:34px;height:34px}
.brand small{font-weight:600;color:var(--txt-mute);font-size:.62rem;letter-spacing:.22em;text-transform:uppercase;display:block;margin-top:-4px}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{
  padding:9px 14px;border-radius:10px;color:var(--txt-dim);font-size:.92rem;font-weight:500;
  transition:.2s;
}
.nav-links a:hover{color:var(--txt);background:var(--surface)}
.nav-links a.active{color:var(--txt)}
.nav-cta{display:flex;align-items:center;gap:10px}
.lang-switch{display:inline-flex;align-items:center;border:1px solid var(--stroke);border-radius:10px;padding:3px;background:var(--surface);font-size:.78rem;font-weight:700}
.lang-switch a{padding:5px 9px;border-radius:7px;color:var(--txt-dim);transition:.2s}
.lang-switch a:hover{color:var(--txt)}
.lang-switch a.on{background:var(--grad-brand);color:#05070e}
.burger{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--stroke);align-items:center;justify-content:center}
.burger span{display:block;width:20px;height:2px;background:var(--txt);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:20px;height:2px;background:var(--txt)}
.burger span::before{top:-6px}.burger span::after{top:6px}

/* ------------------------------ Buttons ---------------------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 22px;border-radius:12px;font-weight:600;font-size:.95rem;
  transition:transform .15s,box-shadow .25s,background .25s;white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--grad-brand);color:#05070e;box-shadow:var(--glow)}
.btn-primary:hover{box-shadow:0 0 50px -4px rgba(0,224,198,.6)}
.btn-ghost{border:1px solid var(--stroke-strong);color:var(--txt);background:var(--surface)}
.btn-ghost:hover{background:var(--surface-2);border-color:var(--brand)}
.btn-lg{padding:16px 30px;font-size:1.02rem}
.btn-block{width:100%}

/* ------------------------------ Cards ------------------------------ */
.card{
  background:var(--surface);border:1px solid var(--stroke);border-radius:var(--radius);
  padding:26px;backdrop-filter:blur(8px);transition:.3s;
}
.card:hover{border-color:var(--stroke-strong);transform:translateY(-4px);box-shadow:var(--shadow)}
.glass{background:var(--surface);border:1px solid var(--stroke);backdrop-filter:blur(16px);border-radius:var(--radius-lg)}

/* ------------------------------ HERO ------------------------------- */
.hero{position:relative;padding:70px 0 40px;overflow:hidden}
#hero-canvas{position:absolute;inset:0;width:100%;height:100%;z-index:0;opacity:.9}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:54px;align-items:center}
.hero-grid > *{min-width:0}           /* évite le débordement des colonnes grid (grid blowout) */
.hero h1{margin:20px 0 18px;max-width:14ch;overflow-wrap:break-word}
.hero .lead{max-width:46ch}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 8px}
.hero-badge{display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--txt-dim);
  padding:8px 14px;border:1px solid var(--stroke);border-radius:999px;background:var(--surface)}
.hero-badge svg{width:16px;height:16px;color:var(--brand-2)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}

/* Ticker */
.ticker{
  margin-top:30px;border:1px solid var(--stroke);border-radius:14px;overflow:hidden;
  background:var(--surface);
}
.ticker-track{display:flex;gap:34px;padding:12px 18px;white-space:nowrap;animation:scroll 26s linear infinite}
.ticker:hover .ticker-track{animation-play-state:paused}
.ticker-item{display:inline-flex;align-items:center;gap:9px;font-size:.9rem;font-variant-numeric:tabular-nums}
.ticker-item .sym{font-weight:700}
.ticker-item .chg{font-size:.8rem;font-weight:600}
.up{color:var(--green)} .down{color:var(--danger)}
@keyframes scroll{to{transform:translateX(-50%)}}

/* ---------------------- Exchange widget (hero) --------------------- */
.swap{
  padding:22px;border-radius:22px;position:relative;
  background:linear-gradient(180deg,rgba(20,24,40,.85),rgba(10,12,24,.9));
  border:1px solid var(--stroke-strong);box-shadow:var(--shadow);
}
.swap::before{content:"";position:absolute;inset:-1px;border-radius:23px;padding:1px;
  background:var(--grad-brand);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;opacity:.5;pointer-events:none}
.swap-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.swap-head h3{font-size:1.05rem}
.swap-tabs{display:flex;gap:4px;background:var(--surface);border-radius:10px;padding:4px}
.swap-tabs button{padding:7px 16px;border-radius:8px;font-size:.85rem;font-weight:600;color:var(--txt-dim)}
.swap-tabs button.active{background:var(--grad-brand);color:#05070e}
.field{background:var(--surface);border:1px solid var(--stroke);border-radius:14px;padding:14px 16px;margin-bottom:10px}
.field label{font-size:.75rem;color:var(--txt-mute);text-transform:uppercase;letter-spacing:.08em}
.field-row{display:flex;align-items:center;gap:10px;margin-top:6px}
.field-row input{
  flex:1;background:transparent;border:none;outline:none;color:var(--txt);
  font-size:1.5rem;font-weight:700;min-width:0;font-variant-numeric:tabular-nums;
}
.asset-select{display:flex;align-items:center;gap:8px;background:var(--surface-2);
  border:1px solid var(--stroke);border-radius:999px;padding:6px 12px;font-weight:600}
.asset-select select{background:transparent;border:none;color:var(--txt);font-weight:700;outline:none;cursor:pointer}
.asset-select option{background:#0a0e1a}
.coin-dot{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font-weight:800;color:#05070e;font-size:.9rem}
.swap-switch{display:flex;justify-content:center;margin:-4px 0}
.swap-switch button{width:40px;height:40px;border-radius:12px;background:var(--bg-2);border:1px solid var(--stroke);display:grid;place-items:center;transition:.2s}
.swap-switch button:hover{transform:rotate(180deg);border-color:var(--brand)}
.swap-summary{margin:12px 2px 16px;font-size:.86rem;color:var(--txt-dim);display:grid;gap:7px}
.swap-summary .row{display:flex;justify-content:space-between}
.swap-summary .row b{color:var(--txt);font-variant-numeric:tabular-nums}
.fee-pill{color:var(--brand-2);font-weight:700}
.tiny{font-size:.74rem;color:var(--txt-mute)}

/* ------------------------------ Stats ------------------------------ */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat{padding:24px;text-align:center}
.stat .num{font-size:2rem;font-weight:800;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .lbl{color:var(--txt-dim);font-size:.9rem;margin-top:4px}

/* ------------------------------ Features --------------------------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.feature .ic{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;
  background:var(--grad-soft);border:1px solid var(--stroke);margin-bottom:16px}
.feature .ic svg{width:26px;height:26px;color:var(--brand-2)}
.feature h3{margin-bottom:8px}
.feature p{color:var(--txt-dim);font-size:.94rem}

.section-head{max-width:720px;margin:0 auto 52px;text-align:center}
.section-head h2{margin:16px 0 14px}

/* ----------------------------- Fee tiers --------------------------- */
.tiers{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.tier{padding:22px 18px;text-align:center;position:relative}
.tier .pct{font-size:2.1rem;font-weight:800;margin:8px 0}
.tier .range{font-size:.82rem;color:var(--txt-dim)}
.tier.best{border-color:var(--brand);box-shadow:var(--glow)}
.tier.best::after{content:"MEILLEUR TAUX";position:absolute;top:-11px;left:50%;transform:translateX(-50%);
  font-size:.62rem;font-weight:700;letter-spacing:.1em;padding:4px 10px;border-radius:999px;background:var(--grad-brand);color:#05070e}
html[lang="en"] .tier.best::after{content:"BEST RATE"}

/* Encart inscription mis en avant à l'arrivée depuis un CTA */
@keyframes regpulse{0%,100%{box-shadow:0 0 0 0 rgba(201,162,75,0)}30%{box-shadow:0 0 0 4px rgba(201,162,75,.25)}}
.notice.pulse{animation:regpulse 1.4s ease-in-out 2}

/* ------------------------------ Steps ------------------------------ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:s}
.step{position:relative;padding-top:8px}
.step .n{counter-increment:s;width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  font-weight:800;background:var(--grad-soft);border:1px solid var(--stroke);margin-bottom:14px}
.step .n::before{content:"0" counter(s)}
.step h3{font-size:1.05rem;margin-bottom:6px}
.step p{color:var(--txt-dim);font-size:.9rem}

/* ------------------------------ FAQ -------------------------------- */
.faq{max-width:820px;margin-inline:auto;display:grid;gap:12px}
.faq details{border:1px solid var(--stroke);border-radius:14px;background:var(--surface);overflow:hidden}
.faq summary{padding:18px 22px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.4rem;color:var(--brand-2);transition:.2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq p{padding:0 22px 20px;color:var(--txt-dim);font-size:.94rem}

/* ------------------------------ CTA -------------------------------- */
.cta-band{padding:56px;border-radius:var(--radius-lg);text-align:center;position:relative;overflow:hidden;
  background:linear-gradient(120deg,rgba(108,92,255,.2),rgba(0,224,198,.12));border:1px solid var(--stroke-strong)}
.cta-band h2{margin-bottom:14px}
.cta-band p{color:var(--txt-dim);max-width:52ch;margin:0 auto 26px}

/* ------------------------------ Footer ----------------------------- */
.footer{border-top:1px solid var(--stroke);margin-top:40px;padding:56px 0 30px;background:var(--bg-2)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px}
.footer h4{font-size:.78rem;text-transform:uppercase;letter-spacing:.12em;color:var(--txt-mute);margin-bottom:16px}
.footer a{display:block;color:var(--txt-dim);font-size:.92rem;padding:5px 0;transition:.2s}
.footer a:hover{color:var(--txt)}
.footer .about p{color:var(--txt-dim);font-size:.9rem;max-width:38ch;margin:14px 0}
.legal-strip{display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;justify-content:space-between;
  margin-top:40px;padding-top:24px;border-top:1px solid var(--stroke);color:var(--txt-mute);font-size:.82rem}
.badge-reg{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border:1px solid var(--stroke);border-radius:999px;background:var(--surface);font-size:.8rem;color:var(--txt-dim)}
.badge-reg b{color:var(--txt)}

/* ------------------------- EU / risk notices ----------------------- */
.notice{border:1px solid var(--stroke);border-radius:14px;padding:16px 20px;background:var(--surface);
  font-size:.88rem;color:var(--txt-dim);display:flex;gap:12px;align-items:flex-start}
.notice svg{width:20px;height:20px;flex:none;margin-top:2px;color:var(--gold)}
.notice.eu svg{color:var(--accent)}

/* ------------------------------ Legal pages ------------------------ */
.doc{max-width:860px;margin-inline:auto}
.doc h1{font-size:clamp(2rem,4vw,2.8rem);margin-bottom:8px}
.doc .updated{color:var(--txt-mute);font-size:.86rem;margin-bottom:34px}
.doc h2{font-size:1.4rem;margin:38px 0 12px}
.doc h3{font-size:1.08rem;margin:22px 0 8px;color:var(--txt)}
.doc p,.doc li{color:var(--txt-dim);margin-bottom:12px}
.doc ul{list-style:disc;padding-left:22px;margin-bottom:14px}
.doc ul li{margin-bottom:6px}
.doc a{color:var(--brand-2);text-decoration:underline}
.doc table{width:100%;border-collapse:collapse;margin:16px 0;font-size:.9rem}
.doc th,.doc td{border:1px solid var(--stroke);padding:10px 12px;text-align:left}
.doc th{background:var(--surface)}
.toc{position:sticky;top:90px}
.toc a{display:block;padding:6px 0;color:var(--txt-dim);font-size:.88rem;border-left:2px solid transparent;padding-left:12px}
.toc a:hover{color:var(--txt);border-color:var(--brand)}
.doc-layout{display:grid;grid-template-columns:240px 1fr;gap:48px;align-items:start}

/* ------------------------------ Forms ------------------------------ */
.form{display:grid;gap:16px}
.form .fg{display:grid;gap:7px}
.form label{font-size:.85rem;color:var(--txt-dim);font-weight:500}
.form input,.form select,.form textarea{
  background:var(--surface);border:1px solid var(--stroke);border-radius:12px;
  padding:13px 15px;color:var(--txt);font-size:.95rem;outline:none;transition:.2s;width:100%;
}
.form input:focus,.form select:focus,.form textarea:focus{border-color:var(--brand);background:var(--surface-2)}
.form textarea{resize:vertical;min-height:130px}
.form .row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form .check{display:flex;gap:10px;align-items:flex-start;font-size:.86rem;color:var(--txt-dim)}
.form .check input{width:18px;height:18px;margin-top:2px;accent-color:var(--brand)}
.form-note{font-size:.82rem;color:var(--txt-mute)}
.form-ok{display:none;padding:14px 18px;border:1px solid var(--green);border-radius:12px;background:rgba(33,208,122,.08);color:#8ff0bf}
.contact-cards{display:grid;gap:14px}
.contact-cards .c{display:flex;gap:14px;align-items:flex-start;padding:18px}
.contact-cards .c svg{width:22px;height:22px;color:var(--brand-2);flex:none;margin-top:2px}
.contact-cards .c b{display:block;margin-bottom:2px}
.contact-cards .c span{color:var(--txt-dim);font-size:.9rem}

/* ------------------------------ Cookie ----------------------------- */
.cookie{position:fixed;left:20px;right:20px;bottom:20px;z-index:80;max-width:520px;margin-inline:auto;
  padding:20px 22px;transform:translateY(140%);transition:.4s;display:none}
.cookie.show{transform:none}
.cookie p{font-size:.88rem;color:var(--txt-dim);margin-bottom:14px}
.cookie .btns{display:flex;gap:10px;flex-wrap:wrap}
.cookie .btns .btn{flex:1}

/* ------------------------------ Page hero -------------------------- */
.page-hero{padding:70px 0 20px;text-align:center}
.page-hero h1{margin:16px 0 14px}
.page-hero .lead{margin-inline:auto}

/* ----------------------------- Reveal ------------------------------ */
.reveal{opacity:0;transform:translateY(24px);transition:.7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ------------------------------ Utilities -------------------------- */
.mt-1{margin-top:10px}.mt-2{margin-top:20px}.mt-3{margin-top:32px}.mt-4{margin-top:48px}
.mb-2{margin-bottom:20px}
.divider{height:1px;background:var(--stroke);margin:0}
.pill-list{display:flex;flex-wrap:wrap;gap:10px}
.pill-list span{padding:8px 14px;border:1px solid var(--stroke);border-radius:999px;background:var(--surface);font-size:.85rem;color:var(--txt-dim)}

/* ------------------------------ Responsive ------------------------- */
@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:38px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .grid-3,.grid-4,.steps{grid-template-columns:repeat(2,1fr)}
  .tiers{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .doc-layout{grid-template-columns:1fr}
  .toc{position:static;display:flex;flex-wrap:wrap;gap:6px 16px;margin-bottom:22px}
}
@media (max-width:640px){
  .nav-links{
    position:fixed;inset:72px 0 auto 0;flex-direction:column;align-items:stretch;
    background:rgba(5,7,14,.97);backdrop-filter:blur(20px);padding:14px 20px 24px;gap:2px;
    border-bottom:1px solid var(--stroke);transform:translateY(-140%);transition:.35s;z-index:55;
  }
  .nav-links.open{transform:none}
  .nav-links a{padding:14px 12px;font-size:1rem}
  .burger{display:flex}
  .nav .btn-ghost{display:none}
  .grid-3,.grid-4,.grid-2,.steps,.stats,.tiers{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .form .row2{grid-template-columns:1fr}
  .section{padding:64px 0}
  .cta-band{padding:36px 24px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}