body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.6;
  background: #f4f4f4;
  color: #333;
}

header {
  background: #036;
  color: #fff;
  text-align: center;
  padding: 20px;
}

h1,
h2 {
  margin: 0.5em 0;
}

main {
  padding: 20px;
  max-width: 700px;
  margin: auto;
}

.btn {
  display: inline-block;
  background: #0a7;
  color: #fff;
  padding: 10px 20px;
  text-decoration: none;
  margin-top: 15px;
  border-radius: 5px;
}

.form-container {
  background: #fff;
  padding: 20px;
  margin-top: 20px;
  border-radius: 8px;
}

input,
textarea {
  width: 100%;
  padding: 10px;
  margin: 10px 0;
  border: 1px solid #ccc;
  border-radius: 4px;
}

button {
  background: #036;
  color: white;
  border: none;
  padding: 12px;
  cursor: pointer;
  border-radius: 5px;
}

select {
  width: 100%;
  padding: 12px;
  margin: 10px 0;
  border: 1px solid #ccc;
  border-radius: 4px;
  background-color: #fff;
  font-size: 16px;
  color: #333;
  font-family: inherit;
  box-sizing: border-box;
}

/* === Marca-d’água AA no fundo da página === */
body {
  position: relative;
  /* necessário para o pseudo-elemento */
  overflow-x: hidden;
  /* evita scroll horizontal indesejado */
}

/* 3) Marca-d’água como fundo full-screen, mas quase invisível */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: url('fundo-logo.png') center center no-repeat;
  background-size: auto;
  /* cobre toda a tela */
  opacity: 0.10;
  /* bem discreto */
  pointer-events: none;
  /* cliques passam normalmente */
  z-index: -1;
  /* atrás de todo o conteúdo */
}

/* ===== footer com palestrantes ===== */
footer {
  background: #036;
  color: #fff;
  text-align: center;
  padding: 30px 20px 20px;
}

/* título “Palestrantes” */
.footer-speakers h2 {
  margin-bottom: 16px;
  font-size: 1.4rem;
}

/* grid flexível */
.speaker-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
  margin-bottom: 20px;
}

/* cada palestrante */
.speaker {
  max-width: 120px;
  text-align: center;
}

/* foto redonda */
.speaker img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: 50%;
  border: 2px solid #fff;
  margin-bottom: 8px;
}

/* nome e cargo */
.speaker .name {
  margin: 4px 0 2px;
  font-weight: bold;
  font-size: 1rem;
}

.speaker .title {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.2;
  color: #eee;
}