*{
  box-sizing:border-box;
}

:root{
  --accent:#f49d01;
  --accent-light:#ffb11a;
  --accent-dark:#c97d00;
  --bg-top:#16151b;
  --bg-mid:#121218;
  --bg-deep:#0d0e13;
  --card-bg:#11131a;
  --card-border:#2a2d37;
  --input-bg:#0c0f16;
  --input-border:#2b3140;
  --text:#f5f7fb;
  --muted:#a6adbb;
}

html,body{
  margin:0;
  padding:0;
  min-height:100%;
  font-family:Arial, Helvetica, sans-serif;
  background:
    radial-gradient(900px 400px at 10% 0%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 65%),
    radial-gradient(900px 400px at 90% 0%, color-mix(in srgb, var(--accent) 7%, transparent), transparent 65%),
    linear-gradient(180deg, var(--bg-top, #16151b) 0%, var(--bg-mid, #121218) 55%, var(--bg-deep, #0d0e13) 100%);
  color:var(--text, #f5f7fb);
}

/* topo */
.hero-top{
  padding:34px 16px 18px;
  text-align:center;
  border-bottom:1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  box-shadow:inset 0 -1px 0 color-mix(in srgb, var(--accent) 10%, transparent);
}

.hero-logo{
  max-width:220px;
  width:100%;
  height:auto;
  display:inline-block;
  filter:drop-shadow(0 0 16px color-mix(in srgb, var(--accent) 18%, transparent));
}

/* barra */
.progress-wrap{
  width:min(920px, 92vw);
  margin:20px auto 26px;
}

.progress-label{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:12px;
  margin-bottom:8px;
  font-size:13px;
  font-weight:600;
  color:var(--text, #f5f7fb);
}

.progress{
  width:100%;
  height:12px;
  background:#1d2028;
  border:1px solid rgba(255,255,255,.08);
  border-radius:999px;
  overflow:hidden;
  box-shadow:
    inset 0 1px 2px rgba(0,0,0,.35),
    0 0 0 1px color-mix(in srgb, var(--accent) 8%, transparent);
}

.progress span{
  display:block;
  height:100%;
  width:79%;
  background:linear-gradient(90deg, var(--accent, #f49d01) 0%, var(--accent-light, #ffb11a) 50%, var(--accent-dark, #c97d00) 100%);
  border-radius:999px;
  box-shadow:
    0 0 14px color-mix(in srgb, var(--accent) 35%, transparent),
    inset 0 1px 0 rgba(255,255,255,.18);
}

/* área principal */
.sheet{
  width:100%;
  display:flex;
  justify-content:center;
  padding:0 16px 40px;
}

.form-card{
  width:min(560px, 92vw);
  background:
    linear-gradient(180deg, rgba(17,19,26,.96) 0%, rgba(13,15,22,.98) 100%);
  border:1px solid color-mix(in srgb, var(--accent) 14%, var(--card-border));
  border-radius:18px;
  padding:18px 18px 16px;
  box-shadow:
    0 22px 48px rgba(0,0,0,.35),
    0 0 30px color-mix(in srgb, var(--accent) 8%, transparent);
}

.form-card h2{
  margin:4px 0 18px;
  font-size:20px;
  line-height:1.2;
  color:#fff;
}

/* textos */
label{
  display:block;
  margin:12px 0 6px;
  font-size:13px;
  font-weight:600;
  color:#fff;
}

.hint{
  margin-top:10px;
  font-size:12px;
  color:var(--muted, #a6adbb);
  text-align:center;
}

.success,
.error{
  margin-top:12px;
  padding:10px 12px;
  border-radius:10px;
  display:none;
  font-size:13px;
}

.success{
  background:rgba(34,197,94,.12);
  border:1px solid rgba(34,197,94,.28);
  color:#86efac;
}

.error{
  background:rgba(239,68,68,.12);
  border:1px solid rgba(239,68,68,.28);
  color:#fca5a5;
}

/* planos */
.plan-box{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:10px;
  margin-bottom:14px;
}

.plan{
  border:1px solid var(--card-border, #2a2d37);
  background:linear-gradient(180deg, #0d1018 0%, #0a0d15 100%);
  border-radius:12px;
  padding:14px 12px;
  cursor:pointer;
  transition:.18s ease;
}

.plan:hover{
  border-color:color-mix(in srgb, var(--accent) 35%, #ffffff20);
  box-shadow:0 0 16px color-mix(in srgb, var(--accent) 10%, transparent);
}

.plan input{
  display:none;
}

.plan h4{
  margin:0 0 4px;
  font-size:15px;
  color:#fff;
}

.plan p{
  margin:0;
  font-size:13px;
  color:var(--accent-light, #ffb11a);
  font-weight:700;
}

.plan.selected{
  border:1px solid var(--accent);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--accent) 14%, #0d1018) 0%, #0a0d15 100%);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--accent) 30%, transparent),
    0 0 18px color-mix(in srgb, var(--accent) 30%, transparent),
    0 10px 24px rgba(0,0,0,.22);
}

/* campos */
input,
select,
textarea{
  width:100%;
  border:1px solid var(--input-border, #2b3140);
  background:var(--input-bg, #0c0f16);
  color:#fff;
  border-radius:10px;
  padding:12px 14px;
  outline:none;
  font-size:14px;
  transition:.18s ease;
}

input::placeholder,
textarea::placeholder{
  color:#7f8797;
}

input:focus,
select:focus,
textarea:focus{
  border-color:var(--accent, #f49d01);
  box-shadow:0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent);
}

/* botão */
.btn{
  width:100%;
  margin-top:14px;
  padding:14px 16px;
  border:none;
  border-radius:12px;
  background:linear-gradient(135deg, var(--accent-light, #ffb11a) 0%, var(--accent, #f49d01) 55%, var(--accent-dark, #c97d00) 100%);
  color:#111;
  font-size:15px;
  font-weight:800;
  cursor:pointer;
  transition:.18s ease;
  box-shadow:
    0 12px 28px rgba(0,0,0,.28),
    0 0 20px color-mix(in srgb, var(--accent) 20%, transparent),
    inset 0 1px 0 rgba(255,255,255,.22);
}

.btn:hover{
  transform:translateY(-1px);
  filter:brightness(1.03);
}

.btn:active{
  transform:translateY(0);
  filter:brightness(.98);
}

/* rodapé */
footer{
  text-align:center;
  padding:8px 16px 24px;
  font-size:12px;
  color:var(--muted, #a6adbb);
}

/* responsivo */
@media (max-width:640px){
  .hero-top{
    padding:26px 14px 14px;
  }

  .hero-logo{
    max-width:160px;
  }

  .progress-wrap{
    width:min(94vw, 94vw);
    margin-bottom:20px;
  }

  .plan-box{
    grid-template-columns:1fr;
  }

  .form-card{
    width:min(94vw, 94vw);
    padding:16px 14px 14px;
  }
}