:root {
  --cor-primaria: #1a73e8;
  --cor-secundaria: #e8f0fe;
  --cor-texto: #1f2937;
  --cor-suave: #f9fafb;
  --cor-botao-wa: #25d366;
  --cor-erro: #dc2626;
  --cor-ok: #16a34a;
  --borda-suave: #e5e7eb;
}

/* RESET */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: "Poppins", Arial, sans-serif;
  background-color: var(--cor-suave);
  color: var(--cor-texto);
  line-height: 1.5;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 12px;
}

.container {
  width: 100%;
  max-width: 880px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  overflow: hidden;
}

/* ===== HEADER ===== */
header {
  background: var(--cor-secundaria);
  padding: 32px 24px;
  border-bottom: 1px solid var(--borda-suave);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

header h1 {
  font-size: clamp(22px, 3vw, 34px);
  color: var(--cor-primaria);
  margin-bottom: 4px;
}

header .tagline {
  color: #374151;
  font-size: 15px;
  font-weight: 400;
}

/* ===== BOTÕES ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  padding: 12px 18px;
  text-decoration: none;
  transition: all 0.25s ease;
}

.btn.primary {
  background: var(--cor-primaria);
  color: #fff;
}

.btn.primary:hover {
  background: #155dc0;
}

.btn.wa {
  background: var(--cor-botao-wa);
  color: #fff;
}

.btn.wa:hover {
  background: #1eb15a;
}

/* ===== CONTEÚDO PRINCIPAL ===== */
main {
  padding: 32px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

@media (max-width: 820px) {
  main {
    grid-template-columns: 1fr;
    padding: 24px 16px;
  }
}

/* ===== CARDS ===== */
.card {
  background: var(--cor-suave);
  border: 1px solid var(--borda-suave);
  border-radius: 12px;
  padding: 20px 18px;
}

.card h2 {
  font-size: 20px;
  margin-bottom: 12px;
  color: var(--cor-primaria);
}

/* ===== FORMULÁRIO ===== */
form {
  display: grid;
  gap: 12px;
}

label {
  font-size: 14px;
  color: #6b7280;
}

input,
select {
  width: 100%;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid var(--borda-suave);
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  background: #fff;
}

input:focus,
select:focus {
  border-color: var(--cor-primaria);
  box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.15);
}

.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.status {
  font-size: 14px;
  margin-top: 8px;
}

.status.ok {
  color: var(--cor-ok);
}

.status.err {
  color: var(--cor-erro);
}

/* ===== RODAPÉ ===== */
footer {
  background: var(--cor-secundaria);
  text-align: center;
  padding: 16px;
  color: #4b5563;
  font-size: 14px;
  border-top: 1px solid var(--borda-suave);
}

/* ===== RESPONSIVIDADE CELULAR ===== */
@media (max-width: 600px) {
  body {
    padding: 0;
  }

  header {
    flex-direction: column;
    text-align: center;
  }

  header .cta {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .card {
    padding: 16px;
  }

  .row {
    grid-template-columns: 1fr;
  }

  .btn {
    width: 100%;
  }

  input,
  select,
  button {
    font-size: 16px;
  }
}