:root {
  --verde: #0c8a5e;
  --verde-escuro: #086647;
  --texto: #1a1a1a;
  --fundo: #ffffff;
  --foco: #0b5fff;
}

* {
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--texto);
  background: var(--fundo);
  margin: 0;
  padding: 0 1rem 3rem;
  max-width: 640px;
  margin-inline: auto;
  line-height: 1.5;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--verde);
  color: #fff;
  padding: 0.75rem 1rem;
  z-index: 10;
}
.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

header {
  background: var(--verde);
  color: #fff;
  padding: 1.5rem 1rem;
  margin: 0 -1rem 1.5rem;
}
header h1 {
  font-size: 1.4rem;
  margin: 0 0 0.25rem;
}
header p {
  margin: 0;
}

section {
  margin-bottom: 2rem;
}

label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

select,
textarea {
  width: 100%;
  font-size: 1.1rem;
  padding: 0.75rem;
  border: 2px solid #999;
  border-radius: 8px;
}

.ajuda {
  color: #555;
  font-size: 0.9rem;
  margin-top: 0.3rem;
}

button {
  font-size: 1.15rem;
  padding: 0.9rem 1.2rem;
  border-radius: 10px;
  border: none;
  background: var(--verde);
  color: #fff;
  cursor: pointer;
  min-height: 48px;
}
button:hover {
  background: var(--verde-escuro);
}
button[aria-pressed="true"] {
  background: #c0392b;
}

*:focus-visible {
  outline: 3px solid var(--foco);
  outline-offset: 2px;
}

#btn-gravar {
  width: 100%;
  margin-bottom: 0.75rem;
}

.ou {
  text-align: center;
  color: #555;
  margin: 0.5rem 0;
}

#form-texto textarea {
  margin-bottom: 0.6rem;
}

#status {
  font-size: 1.05rem;
  font-weight: 600;
}

#resposta-texto {
  font-size: 1.1rem;
}

audio {
  width: 100%;
  margin-top: 0.5rem;
}

footer {
  color: #555;
  font-size: 0.9rem;
  border-top: 1px solid #ddd;
  padding-top: 1rem;
}