body {
  background-image:
    radial-gradient(60rem 30rem at 15% -10%, rgba(6, 182, 212, 0.12), transparent 60%),
    radial-gradient(50rem 30rem at 95% 0%, rgba(192, 38, 211, 0.12), transparent 60%);
  background-attachment: fixed;
}
.card {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgb(30, 41, 59);
  border-radius: 1.5rem;
  backdrop-filter: blur(16px);
}
.glow { box-shadow: 0 30px 80px -30px rgba(6, 182, 212, 0.25); }
.label {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgb(148, 163, 184);
  margin-bottom: 0.5rem;
}
.input {
  width: 100%;
  background: rgb(2, 6, 23);
  border: 1px solid rgb(30, 41, 59);
  border-radius: 0.75rem;
  padding: 0.75rem 1rem;
  color: #fff;
  font-size: 0.95rem;
  transition: border-color 0.15s;
}
.input:focus { outline: none; border-color: rgb(6, 182, 212); }
.btn-primary {
  display: inline-block;
  background: linear-gradient(90deg, rgb(6, 182, 212), rgb(192, 38, 211));
  color: #fff;
  font-weight: 700;
  padding: 0.85rem 1.25rem;
  border-radius: 0.75rem;
  transition: filter 0.15s, transform 0.1s;
  cursor: pointer;
}
.btn-primary:hover { filter: brightness(1.1); }
.btn-primary:active { transform: scale(0.98); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; filter: none; }
.step-num {
  width: 2rem; height: 2rem;
  border-radius: 9999px;
  display: grid; place-items: center;
  font-weight: 800; font-size: 0.85rem;
  background: rgba(6, 182, 212, 0.12);
  color: rgb(103, 232, 249);
  margin-bottom: 0.75rem;
}
.check { position: relative; padding-left: 1.6rem; }
.check::before {
  content: "✓";
  position: absolute; left: 0; top: 0;
  color: rgb(34, 211, 238);
  font-weight: 800;
}

/* Case de consentement avant paiement */
.consent { display: flex; gap: .75rem; align-items: flex-start; max-width: 48rem; margin-left: auto; margin-right: auto; padding: .9rem 1rem; border: 1px solid rgb(30 41 59); border-radius: .9rem; background: rgb(15 23 42 / .6); font-size: .8rem; line-height: 1.5; color: rgb(148 163 184); cursor: pointer; }
.consent a { color: rgb(34 211 238); text-decoration: underline; }
.consent-box { margin-top: .15rem; width: 1.05rem; height: 1.05rem; flex: none; accent-color: rgb(6 182 212); }
.consent-alert { border-color: rgb(244 63 94); box-shadow: 0 0 0 3px rgb(244 63 94 / .2); }