:root{
  --bg:#0f0f10;          /* noir satiné */
  --card:#17181a;
  --text:#e9eaec;
  --muted:#a3a7ad;
  --line:#232528;
  --green:#18a957;       /* boutons valider/calculer */
  --green-press:#12924a;
  --chip:#2c2c2e;        /* “gris sidéral” */
  --input:#1e2023;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,Arial}
main{max-width:920px;margin:32px auto;padding:0 16px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:16px;
  padding:20px 18px;margin:16px 0; box-shadow:0 2px 18px rgba(0,0,0,.25)
}
.hr{height:1px;background:var(--line);margin:22px 0}

h1,h2{margin:0 0 12px 0;font-weight:800;letter-spacing:.2px}
h1{font-size:1.55rem}
h2{font-size:1.45rem}
.note{color:var(--muted);font-size:.95rem;display:flex;gap:8px;align-items:flex-start}
.note i{opacity:.8}

.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:720px){.row{grid-template-columns:1fr}}

label{display:block;font-size:.95rem;color:#c9ccd1;margin:4px 0 6px 2px}
input,textarea,select{
  width:100%;border:1px solid var(--line);background:var(--input);color:var(--text);
  padding:14px 12px;border-radius:12px;font:inherit;outline:none
}
input::placeholder,textarea::placeholder{color:#7e838a}
textarea{min-height:86px;resize:vertical}

.btn{
  display:inline-block;border:none;border-radius:12px;padding:14px 16px;
  font-weight:800;text-align:center;text-decoration:none;cursor:pointer;
}
.btn.primary{background:var(--green);color:#092411}
.btn.primary:active{background:var(--green-press)}
.btn.flat{background:transparent;border:1px solid var(--line);color:var(--text)}
.btn.secondary{background:var(--chip);color:#d7d8db}

.result{
  margin-top:14px;padding:14px;border:1px dashed var(--line);border-radius:12px;
  background:#151618;font-weight:600
}
.status{min-height:20px;margin-top:10px;color:var(--muted)}

.badge{
  display:inline-block;background:var(--chip);color:#d8d8da;
  border-radius:999px;padding:7px 12px;font-weight:700;font-size:.88rem
}
.badge.right{float:right;margin:-6px 0 8px 0}
.list{position:relative}
.suggest{
  list-style:none;margin:6px 0 0 0;padding:0;border:1px solid var(--line);
  background:var(--card);border-radius:12px;max-height:220px;overflow:auto;display:none;position:absolute;width:100%;z-index:20
}
.suggest.show{display:block}
.suggest li{padding:10px 12px;cursor:pointer}
.suggest li:hover,.suggest li.active{background:#1e2023}
.footer{margin-top:16px;color:var(--muted);font-size:.9rem;text-align:right}