:root {
  --fundo: #0b1d33;
  --painel: #132b48;
  --painel-2: #1b3a5e;
  --texto: #eef4fb;
  --suave: #9fb3c8;
  --destaque: #5eead4;
  --destaque-escuro: #0f766e;
  --gravando: #f43f5e;
  --perigo: #fb7185;
  --raio: 16px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--fundo);
  color: var(--texto);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-tap-highlight-color: transparent;
}
[hidden] { display: none !important; }
button { font: inherit; color: inherit; cursor: pointer; }
input {
  font: inherit; color: var(--texto); background: var(--painel-2);
  border: 1px solid #2c4d75; border-radius: 12px; padding: 12px 14px; width: 100%;
}
input:focus { outline: 2px solid var(--destaque); outline-offset: 1px; }

.tela {
  min-height: 100dvh; display: flex; flex-direction: column;
  padding: max(12px, env(safe-area-inset-top)) 16px max(12px, env(safe-area-inset-bottom));
  max-width: 560px; margin: 0 auto;
}

/* Pareamento */
#tela-parear { justify-content: center; }
.cartao { background: var(--painel); border-radius: var(--raio); padding: 22px; display: grid; gap: 14px; }
.cartao h1 { margin: 0; font-size: 1.4rem; }
.cartao p { margin: 0; color: var(--suave); }
.cartao label { display: grid; gap: 6px; font-weight: 600; }
#codigo { font-size: 1.6rem; letter-spacing: .3em; text-align: center; }
.botao {
  border: 0; border-radius: 12px; padding: 14px 16px; background: var(--painel-2);
  font-weight: 600;
}
.botao.principal { background: var(--destaque); color: #042f2e; }
.botao.perigo { background: transparent; color: var(--perigo); border: 1px solid var(--perigo); }
.dica { font-size: .9rem; color: var(--suave); margin: 0; }
.msg { min-height: 1.4em; font-weight: 600; }
.msg.erro { color: var(--perigo); }

/* Principal */
header { display: flex; align-items: center; justify-content: space-between; padding: 4px 0 10px; }
.titulo { display: flex; align-items: center; gap: 10px; font-weight: 600; }
.ponto { width: 10px; height: 10px; border-radius: 50%; background: var(--suave); }
.ponto.ok { background: var(--destaque); }
.ponto.ocupado { background: #fbbf24; }
.ponto.gravando { background: var(--gravando); }
.ponto.erro { background: var(--perigo); }
.icone { background: transparent; border: 0; font-size: 1.4rem; padding: 6px 10px; }

.seletor { display: grid; grid-template-columns: 1fr 1fr; background: var(--painel); border-radius: 14px; padding: 4px; gap: 4px; }
.seletor button { border: 0; background: transparent; border-radius: 10px; padding: 10px 6px; font-weight: 600; color: var(--suave); }
.seletor button[aria-checked="true"] { background: var(--painel-2); color: var(--texto); box-shadow: inset 0 0 0 1px var(--destaque-escuro); }
.aviso { margin: 8px 2px 0; font-size: .85rem; color: #fbbf24; }

#conversa { flex: 1; overflow-y: auto; padding: 14px 0; display: flex; flex-direction: column; gap: 10px; }
.vazio { color: var(--suave); text-align: center; margin: auto 10px; }
.bolha { max-width: 88%; padding: 10px 14px; border-radius: 16px; white-space: pre-wrap; overflow-wrap: anywhere; }
.bolha.eu { align-self: flex-end; background: var(--destaque-escuro); border-bottom-right-radius: 4px; }
.bolha.ele { align-self: flex-start; background: var(--painel); border-bottom-left-radius: 4px; }
.bolha.pendente { opacity: .65; font-style: italic; }
.nota { align-self: center; font-size: .82rem; color: var(--suave); text-align: center; }

footer { display: grid; gap: 10px; padding-top: 6px; }
.faixa { text-align: center; font-size: .9rem; color: var(--destaque); }
.controles { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 10px; }
.espaco { display: block; }
.botao-parar {
  justify-self: start; border: 1px solid #2c4d75; background: var(--painel); border-radius: 999px;
  padding: 10px 14px; font-weight: 600; font-size: .9rem;
}
.botao-falar {
  position: relative; width: min(46vw, 190px); aspect-ratio: 1; border-radius: 50%; border: 0;
  background: radial-gradient(circle at 35% 30%, #7ff3e0, var(--destaque) 45%, var(--destaque-escuro));
  color: #042f2e; font-weight: 800; font-size: 1.05rem; line-height: 1.2;
  touch-action: none; user-select: none; -webkit-user-select: none; -webkit-touch-callout: none;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .35); transition: transform .08s;
}
.botao-falar .anel { position: absolute; inset: -8px; border-radius: 50%; border: 3px solid transparent; }
.botao-falar.gravando { transform: scale(.96); background: radial-gradient(circle at 35% 30%, #fda4af, var(--gravando) 50%, #9f1239); color: #fff; }
.botao-falar.gravando .anel { border-color: var(--gravando); animation: pulsar 1s infinite; }
.botao-falar.ocupado { filter: saturate(.5) brightness(.8); }
.botao-falar:disabled { filter: grayscale(1) brightness(.6); }
@keyframes pulsar { 0% { transform: scale(1); opacity: 1; } 100% { transform: scale(1.18); opacity: 0; } }

.form-texto { display: grid; grid-template-columns: 1fr auto; gap: 6px; }
.form-texto input { padding: 10px 12px; }

dialog {
  background: var(--painel); color: var(--texto); border: 0; border-radius: var(--raio);
  width: min(92vw, 480px); padding: 20px;
}
dialog::backdrop { background: rgba(0, 0, 0, .55); }
dialog h2 { margin: 0 0 12px; }
.linha { display: grid; grid-template-columns: auto 1fr; gap: 12px; align-items: start; }
.linha input { width: 22px; height: 22px; margin-top: 2px; }
.linha small { color: var(--suave); }
.acoes { display: flex; gap: 10px; justify-content: space-between; margin-top: 16px; flex-wrap: wrap; }