:root {
  --bg:#0f172a;
  --card:#111827;
  --text:#e5e7eb;
  --muted:#9ca3af;
  --accent:#22c55e;
  --danger:#ef4444;
}

*{box-sizing:border-box}

body{
  margin:0;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
}

.container{
  max-width:920px;
  margin:0 auto;
  padding:24px;
}

.card{
  background:var(--card);
  border-radius:16px;
  padding:24px;
  box-shadow:0 10px 30px rgba(0,0,0,.3);
}

h1{margin:0 0 12px;font-size:28px;font-weight:700}
h2{margin:24px 0 8px;font-size:20px;font-weight:600}

.grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
}
.grid2{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}

label span{
  display:block;
  margin-bottom:6px;
  color:var(--muted);
  font-size:.9rem;
}

input,select,textarea{
  width:100%;
  padding:12px;
  border-radius:10px;
  border:1px solid #374151;
  background:#0b1220;
  color:#fff;
  font-size:1rem;
}

button,.btn{
  padding:12px 16px;
  border:none;
  border-radius:12px;
  background:var(--accent);
  color:#04130a;
  font-weight:700;
  cursor:pointer;
  text-decoration:none;
  display:inline-block;
  transition:filter .15s ease-in-out, transform .1s;
}
button:hover,.btn:hover{filter:brightness(1.05); transform:translateY(-1px)}

fieldset{
  border:1px solid #374151;
  border-radius:12px;
  padding:12px;
  margin-bottom:1rem;
}
legend{padding:0 6px;color:var(--muted)}

.check{display:block;margin:6px 0}
.muted{color:var(--muted)}

.share{
  display:flex;
  gap:8px;
  align-items:flex-end;
  margin:8px 0 16px;
}
.share input{flex:1}

.success{color:#86efac;margin:0 0 8px}
.danger{color:var(--danger)}

.toplists{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
}
.charts{
  display:grid;
  gap:24px;
  margin-top:12px;
}

@media (max-width: 720px){
  .grid,.grid2,.toplists{grid-template-columns:1fr}
}

/* --- cases à cocher alignées --- */
label.choice{
  display:flex;
  align-items:center;
  gap:.6rem;
  margin:.35rem 0;
  cursor:pointer;
  font-size:1rem;
  line-height:1.4;
}
label.choice input[type="checkbox"]{
  width:1.2em;
  height:1.2em;
  margin:0;
  accent-color:var(--accent); /* navigateur compatibles */
}

/* bloc d’intro inséré dans .card */
.intro{
  margin: 0 0 16px;   /* espace sous l’intro */
  padding: 0;         /* on laisse la card gérer le padding */
}
.intro h2{ margin:0 0 .5rem; font-size:1.35rem; }
.intro a{ text-decoration: underline; }
.intro .steps{ margin:.6rem 0; }
.intro .note{ color:var(--muted); margin:.4rem 0 0; }