:root{
  --bg: #121417;
  --card: #181d23;
  --border: rgba(255,255,255,.10);
  --text: #e9edf2;          /* gris clair lisible */
  --muted: rgba(233,237,242,.72);
  --accent: #7dd3fc;        /* bleu clair */
  --danger: #fb7185;
  --warn: #fbbf24;
  --ok: #34d399;
  --shadow: 0 12px 30px rgba(0,0,0,.35);
}

*{ box-sizing: border-box; }
body{
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 20% 0%, rgba(125,211,252,.12), transparent),
              radial-gradient(900px 500px at 100% 20%, rgba(52,211,153,.10), transparent),
              var(--bg);
  color: var(--text);
}

.container{
  max-width: 900px;
  margin: 28px auto;
  padding: 0 16px 40px;
}

.logo{
  width: 70px;
  height: auto;
  border-radius: 90px;
  display: grid;
  place-items: center;
  display: block;
}

.card{
  background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.00));
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 18px;
  backdrop-filter: blur(6px);
}

.grid{
  margin-top: 14px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

@media (max-width: 760px){
  .grid{ grid-template-columns: 1fr; }
}

h1{
  margin: 0 0 6px;
  font-size: 1.6rem;
  letter-spacing: .2px;
}

.subtitle{
  margin: 0;
  color: var(--muted);
}

.field{
  display: flex;
  flex-direction: column;
  gap: 8px;
}

label{
  color: var(--muted);
  font-size: .95rem;
}

input{
  width: 100%;
  padding: 11px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(0,0,0,.18);
  color: var(--text);
  outline: none;
}

input:focus{
  border-color: rgba(125,211,252,.55);
  box-shadow: 0 0 0 3px rgba(125,211,252,.15);
}

.actions{
  grid-column: 1 / -1;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

button{
  cursor: pointer;
  border: 1px solid var(--border);
  background: rgba(125,211,252,.12);
  color: var(--text);
  padding: 11px 14px;
  border-radius: 12px;
  font-weight: 650;
}

button:hover{
  border-color: rgba(125,211,252,.55);
}

button.ghost{
  background: rgba(255,255,255,.04);
}

.result{
  grid-column: 1 / -1;
  border-top: 1px solid var(--border);
  padding-top: 12px;
  display: grid;
  gap: 8px;
}

.resultRow{
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.label{
  color: var(--muted);
}

.value{
  font-weight: 800;
}

.advice{
  grid-column: 1 / -1;
  margin-top: 6px;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

.advice h2{
  margin: 0 0 8px;
  font-size: 1.15rem;
}

.advice p{
  margin: 0 0 12px;
  color: var(--muted);
}

.statGrid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

@media (max-width: 760px){
  .statGrid{ grid-template-columns: 1fr; }
}

.stat{
  border: 1px solid var(--border);
  background: rgba(0,0,0,.12);
  border-radius: 12px;
  padding: 12px;
}

.statTitle{
  color: var(--muted);
  font-size: .92rem;
  margin-bottom: 6px;
}

.statValue{
  font-weight: 800;
}

.smallNote{
  font-size: .9rem;
  margin-top: 10px;
  color: rgba(233,237,242,.55);
}

.footer{
  margin-top: 14px;
  text-align: center;
  color: rgba(233,237,242,.55);
  font-size: .95rem;
}