* {
  box-sizing: border-box;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

body {
  margin: 0;
  min-height: 100vh;
  background: url("../img/bg-iluminacao.jpg") center/cover no-repeat fixed; /* opcional */
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.55);
  backdrop-filter: blur(2px);
}

.card {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 420px;
  padding: 22px;
  border-radius: 16px;
  background: rgba(0,0,0,.55);
  box-shadow: 0 10px 30px rgba(0,0,0,.4);
}

h1 {
  margin: 0 0 6px;
  text-align: center;
}

.subtitle {
  text-align: center;
  opacity: .9;
  margin-bottom: 16px;
}

label {
  display: block;
  margin-top: 10px;
  margin-bottom: 4px;
  font-size: 14px;
}

select, input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: none;
  outline: none;
}

button {
  margin-top: 14px;
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  background: #ffc107;
  color: #1b1b1b;
  font-weight: 700;
}

button:hover { opacity: .9; }

.resultado {
  margin-top: 14px;
  padding: 12px;
  border-radius: 10px;
  background: rgba(0,0,0,.5);
  line-height: 1.5;
}

.aviso-norma {
  margin-top: 12px;
  padding: 10px 12px;
  font-size: 13px;
  line-height: 1.5;
  color: #f1f1f1;
  background: rgba(0, 0, 0, 0.55);
  border-left: 4px solid #ffc107;
  border-radius: 8px;
  backdrop-filter: blur(4px);
}