/* ============================================================
   Looptor — Générateur de boucles multi-LLM
   Direction : dark-tech éditoriale · accent dégradé violet→cyan
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root{
  --bg:#0a0b10;
  --bg-soft:#0e1016;
  --surface:#14171f;
  --surface-2:#1a1e29;
  --border:rgba(255,255,255,.09);
  --border-strong:rgba(255,255,255,.16);
  --text:#ECEEF3;
  --muted:#98A2B3;
  --faint:#6b7280;
  --violet:#7C5CFF;
  --violet-lt:#A78BFA;
  --cyan:#22D3EE;
  --grad:linear-gradient(120deg,#7C5CFF 0%,#22D3EE 100%);
  --grad-soft:linear-gradient(120deg,rgba(124,92,255,.18),rgba(34,211,238,.14));
  --ok:#34D399; --warn:#FBBF24; --err:#F87171;
  --r-sm:10px; --r:16px; --r-lg:24px; --r-xl:32px;
  --ease:cubic-bezier(.16,1,.3,1);
  --mono:'JetBrains Mono',ui-monospace,Menlo,monospace;
  --disp:'Space Grotesk','Inter',system-ui,sans-serif;
  --ui:'Inter',system-ui,-apple-system,sans-serif;
  --maxw:1120px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--ui);background:var(--bg);color:var(--text);line-height:1.55;
  -webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(800px 500px at 85% -5%,rgba(124,92,255,.16),transparent 60%),
    radial-gradient(700px 500px at 0% 100%,rgba(34,211,238,.10),transparent 55%);
  background-attachment:fixed;
}
a{color:inherit;text-decoration:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.mono{font-family:var(--mono)}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ── NAV ── */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);
  background:rgba(10,11,16,.72);border-bottom:1px solid var(--border)}
.nav .container{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--disp);font-weight:700;font-size:18px;letter-spacing:-.01em}
.brand .loopmark{width:26px;height:26px;flex:none}
.nav-links{display:flex;align-items:center;gap:8px}
.nav-links a{padding:8px 14px;border-radius:999px;font-size:14.5px;font-weight:500;color:var(--muted);transition:color .2s,background .2s}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-links a.active{color:var(--text);background:rgba(255,255,255,.07)}
.nav-links a.cta{color:#0a0b10;background:var(--grad);font-weight:600}
.nav-links a.cta:hover{filter:brightness(1.08)}

/* ── BUTTONS ── */
.btn{display:inline-flex;align-items:center;gap:9px;border:none;cursor:pointer;font-family:var(--ui);
  font-weight:600;font-size:15px;padding:13px 22px;border-radius:999px;transition:transform .15s var(--ease),filter .2s,background .2s,border-color .2s}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--grad);color:#0a0b10}
.btn-primary:hover{filter:brightness(1.08)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border-strong)}
.btn-ghost:hover{background:rgba(255,255,255,.05);border-color:var(--violet-lt)}
.btn-sm{padding:9px 16px;font-size:13.5px}

/* ── HERO ── */
.hero{padding:96px 0 72px;position:relative;overflow:hidden}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;color:var(--violet-lt);margin-bottom:22px}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px var(--cyan)}
.hero h1{font-family:var(--disp);font-weight:700;font-size:clamp(40px,6.4vw,76px);line-height:1.02;letter-spacing:-.025em;max-width:14ch}
.hero p.lead{font-size:clamp(17px,1.8vw,21px);color:var(--muted);max-width:60ch;margin-top:22px;line-height:1.5}
.hero .actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:40px}
.chip{font-family:var(--mono);font-size:12.5px;color:var(--muted);background:var(--surface);
  border:1px solid var(--border);padding:7px 13px;border-radius:999px}
.chip b{color:var(--text);font-weight:600}

/* ── SECTIONS ── */
section.block{padding:64px 0}
.section-head{max-width:62ch;margin-bottom:40px}
.section-head h2{font-family:var(--disp);font-weight:700;font-size:clamp(28px,3.6vw,44px);letter-spacing:-.02em;line-height:1.08}
.section-head p{color:var(--muted);margin-top:14px;font-size:17px}

/* ── BENTO / CARDS ── */
.bento{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:26px;position:relative;
  transition:transform .25s var(--ease),border-color .25s,background .25s}
.card:hover{transform:translateY(-4px);border-color:var(--border-strong);background:var(--surface-2)}
.card .ic{width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--grad-soft);border:1px solid var(--border);font-size:20px;margin-bottom:16px}
.card h3{font-family:var(--disp);font-weight:600;font-size:19px;letter-spacing:-.01em;margin-bottom:8px}
.card p{color:var(--muted);font-size:14.5px;line-height:1.5}
.card.span2{grid-column:span 2}
.card.feature{background:linear-gradient(160deg,var(--surface-2),var(--surface));}

/* model badges */
.models-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.model-badge{display:flex;align-items:center;gap:9px;background:var(--surface);border:1px solid var(--border);
  border-radius:999px;padding:8px 15px;font-size:14px;font-weight:500}
.model-badge .d{width:9px;height:9px;border-radius:50%}
.d-claude{background:#D97757}.d-chatgpt{background:#10A37F}.d-gemini{background:#4285F4}.d-generic{background:var(--violet-lt)}

/* ── STEPS ── */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:s}
.step{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:24px}
.step::before{counter-increment:s;content:"0" counter(s);font-family:var(--mono);font-size:13px;color:var(--cyan);
  background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.25);padding:3px 9px;border-radius:8px;display:inline-block;margin-bottom:14px}
.step h3{font-family:var(--disp);font-size:18px;font-weight:600;margin-bottom:6px}
.step p{color:var(--muted);font-size:14.5px}

/* ── GENERATOR LAYOUT ── */
.gen-wrap{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start;padding:40px 0 80px}
@media(max-width:940px){.gen-wrap{grid-template-columns:1fr}}
.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:28px}
.panel.sticky{position:sticky;top:88px}
.panel h2{font-family:var(--disp);font-size:22px;font-weight:600;letter-spacing:-.01em;margin-bottom:4px}
.panel .hint{color:var(--muted);font-size:14px;margin-bottom:22px}

/* ── FORM ── */
.field{margin-bottom:20px}
.field > label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}
.field .desc{color:var(--faint);font-size:12.5px;font-weight:400;margin-top:-4px;margin-bottom:8px}
input[type=text],input[type=number],textarea,select{
  width:100%;background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--r-sm);
  color:var(--text);font-family:var(--ui);font-size:14.5px;padding:12px 14px;transition:border-color .2s,box-shadow .2s}
textarea{resize:vertical;min-height:78px;line-height:1.5}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--violet);box-shadow:0 0 0 3px rgba(124,92,255,.22)}
input::placeholder,textarea::placeholder{color:var(--faint)}
select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);
  background-position:calc(100% - 18px) 18px,calc(100% - 13px) 18px;background-size:5px 5px;background-repeat:no-repeat}

/* segmented control */
.seg{display:flex;gap:6px;background:var(--bg-soft);border:1px solid var(--border);border-radius:999px;padding:5px}
.seg label{flex:1;text-align:center;padding:9px 12px;border-radius:999px;font-size:13.5px;font-weight:600;color:var(--muted);cursor:pointer;transition:.2s}
.seg input{position:absolute;opacity:0;pointer-events:none}
.seg label:has(input:checked){background:var(--grad);color:#0a0b10}
.seg label span{display:block}

.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.check-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}
.check-row label{display:inline-flex;align-items:center;gap:7px;background:var(--bg-soft);border:1px solid var(--border);
  padding:8px 13px;border-radius:999px;font-size:13px;cursor:pointer;transition:.2s}
.check-row label:has(input:checked){border-color:var(--violet);background:rgba(124,92,255,.12);color:var(--text)}
.check-row input{accent-color:var(--violet)}
.cond{display:none}
.cond.show{display:block;animation:fade .3s var(--ease)}
@keyframes fade{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

.warnbox{display:none;margin-top:8px;font-size:13px;color:var(--warn);background:rgba(251,191,36,.08);
  border:1px solid rgba(251,191,36,.3);border-radius:var(--r-sm);padding:10px 13px}
.warnbox.show{display:block}

/* ── OUTPUT ── */
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:16px}
.tab{padding:8px 14px;border-radius:999px;font-size:13px;font-weight:600;color:var(--muted);
  background:var(--bg-soft);border:1px solid var(--border);cursor:pointer;transition:.2s}
.tab:hover{color:var(--text)}
.tab.active{color:#0a0b10;background:var(--grad);border-color:transparent}
.out-block{display:none}
.out-block.active{display:block;animation:fade .3s var(--ease)}
.out-label{font-size:12px;text-transform:uppercase;letter-spacing:.1em;color:var(--faint);font-weight:600;margin:18px 0 8px}
pre.code{background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--r);padding:18px;
  font-family:var(--mono);font-size:12.8px;line-height:1.6;color:#dfe3ea;white-space:pre-wrap;word-break:break-word;position:relative}
pre.code .k{color:var(--violet-lt)}
.copybar{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:8px}
.copybar .meta{font-size:12.5px;color:var(--faint)}

/* fiche 8 champs */
.export-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin:18px 0 8px}
.export-actions{display:flex;gap:8px;flex-wrap:wrap}
.fiche{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:6px}
.fiche .fitem{background:var(--bg-soft);border:1px solid var(--border);border-radius:12px;padding:12px 14px;position:relative}
.fiche .fitem .n{font-family:var(--mono);font-size:11px;color:var(--cyan);font-weight:700}
.fiche .fitem .ft{font-size:12.5px;font-weight:600;margin:3px 0}
.fiche .fitem .fv{font-size:12.5px;color:var(--muted);line-height:1.4;word-break:break-word}
@media(max-width:520px){.fiche{grid-template-columns:1fr}.row2{grid-template-columns:1fr}}

.empty{color:var(--faint);text-align:center;padding:50px 20px;font-size:14.5px}
.empty .big{font-size:34px;display:block;margin-bottom:12px;opacity:.6}

/* toast */
.toast{position:fixed;bottom:26px;left:50%;transform:translateX(-50%) translateY(20px);opacity:0;
  background:var(--text);color:#0a0b10;font-weight:600;font-size:14px;padding:11px 20px;border-radius:999px;
  z-index:99;transition:opacity .3s,transform .3s var(--ease);pointer-events:none}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* note / callout */
.callout{background:var(--grad-soft);border:1px solid var(--border);border-radius:var(--r-lg);padding:22px 24px;margin:18px 0}
.callout h4{font-family:var(--disp);font-size:17px;margin-bottom:6px}
.callout p{color:var(--muted);font-size:14.5px;line-height:1.55}
.callout.warn{background:rgba(251,191,36,.07);border-color:rgba(251,191,36,.25)}

/* guide content */
.prose{max-width:74ch}
.prose h2{font-family:var(--disp);font-size:28px;font-weight:700;letter-spacing:-.02em;margin:42px 0 14px}
.prose h3{font-family:var(--disp);font-size:20px;font-weight:600;margin:28px 0 8px}
.prose p{color:var(--muted);margin:12px 0;font-size:16px}
.prose ul{color:var(--muted);margin:12px 0 12px 22px;font-size:16px}
.prose li{margin:6px 0}
.prose strong{color:var(--text)}
.prose code{font-family:var(--mono);font-size:.88em;background:var(--surface);border:1px solid var(--border);padding:2px 7px;border-radius:7px;color:var(--cyan)}
.prose table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14.5px}
.prose th{text-align:left;color:var(--violet-lt);font-weight:600;padding:10px 12px;border-bottom:1px solid var(--border-strong)}
.prose td{padding:10px 12px;border-bottom:1px solid var(--border);color:var(--muted);vertical-align:top}
.prose td:first-child{color:var(--text);font-weight:600;white-space:nowrap}

/* footer */
.footer{border-top:1px solid var(--border);padding:40px 0;margin-top:40px;color:var(--faint);font-size:14px}
.footer .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px}
.footer a{color:var(--muted)}.footer a:hover{color:var(--text)}

/* reveal on scroll */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}

@media(max-width:860px){
  .bento,.steps{grid-template-columns:1fr}
  .card.span2{grid-column:auto}
  .nav-links a:not(.cta){display:none}
}
@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
}