:root {
  --fundo: #0f1f17;
  --cartao: #1a3326;
  --borda: #2a4a38;
  --texto: #eaf3ec;
  --suave: #9fb8a8;
  --ligado: #f2c14e;
  --verde: #3fb67a;
  --erro: #ff7b72;
  color-scheme: dark;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

body {
  margin: 0;
  font: 16px/1.4 system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  background: var(--fundo);
  color: var(--texto);
  min-height: 100dvh;
}

[hidden] { display: none !important; }

h1 { font-size: 1.3rem; margin: 0; }
h2 { font-size: 1.05rem; margin: 1.4rem 0 .6rem; color: var(--suave); }

.tela { min-height: 100dvh; }

/* Login */
#tela-login { display: grid; place-items: center; padding: 1.5rem; }
.login { width: 100%; max-width: 340px; display: grid; gap: .9rem; text-align: center; }
.login .logo { width: 72px; height: 72px; margin: 0 auto; border-radius: 18px; }
.login label { display: grid; gap: .3rem; text-align: left; color: var(--suave); font-size: .9rem; }

input, select {
  font: inherit;
  color: var(--texto);
  background: var(--fundo);
  border: 1px solid var(--borda);
  border-radius: 10px;
  padding: .7rem .8rem;
  width: 100%;
}

.botao {
  font: inherit;
  font-weight: 600;
  border: 0;
  border-radius: 12px;
  padding: .85rem 1rem;
  background: var(--verde);
  color: #06140c;
  width: 100%;
}
.botao.secundario { background: var(--cartao); color: var(--texto); border: 1px solid var(--borda); margin-top: .6rem; }

.erro { color: var(--erro); min-height: 1.2em; margin: 0; }

/* Estrutura */
.topo {
  position: sticky; top: 0; z-index: 2;
  display: flex; align-items: center; justify-content: space-between;
  padding: calc(env(safe-area-inset-top) + .9rem) 1.1rem .9rem;
  background: var(--fundo);
}
.ao-vivo { width: 10px; height: 10px; border-radius: 50%; background: #555; }
.ao-vivo.on { background: var(--verde); box-shadow: 0 0 8px var(--verde); }

.aba { padding: 0 1rem calc(env(safe-area-inset-bottom) + 5.5rem); max-width: 720px; margin: 0 auto; }

.abas {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 2;
  display: grid; grid-template-columns: repeat(3, 1fr);
  background: #0b1711; border-top: 1px solid var(--borda);
  padding-bottom: env(safe-area-inset-bottom);
}
.abas button {
  font: inherit; font-size: .9rem; background: none; border: 0; color: var(--suave); padding: .9rem 0;
}
.abas button.ativa { color: var(--texto); font-weight: 600; }

.cartao {
  background: var(--cartao);
  border: 1px solid var(--borda);
  border-radius: 16px;
  padding: 1rem;
  color: var(--texto);
}

/* Liga/desliga */
.grade { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: .75rem; }
.chave {
  font: inherit; text-align: left;
  display: grid; gap: .5rem; min-height: 96px; align-content: space-between;
  transition: background .15s, border-color .15s;
}
.chave .nome { font-weight: 600; }
.chave .estado { color: var(--suave); font-size: .85rem; }
.chave.ligado { background: #3a3417; border-color: var(--ligado); }
.chave.ligado .estado { color: var(--ligado); }
.chave.enviando { opacity: .6; }

.offline { opacity: .45; }

/* Portão */
#portoes { display: grid; gap: .75rem; margin-bottom: .75rem; }
.portao { display: grid; gap: .8rem; }
.portao .nome { font-weight: 600; font-size: 1.1rem; }
.segurar {
  position: relative; overflow: hidden;
  font: inherit; font-weight: 700; font-size: 1.05rem;
  border: 2px solid var(--verde); border-radius: 14px;
  background: transparent; color: var(--texto);
  padding: 1.1rem; user-select: none; -webkit-user-select: none; touch-action: none;
}
.segurar .progresso {
  position: absolute; inset: 0; width: 0; background: var(--verde); opacity: .35;
}
.segurar.segurando .progresso { width: 100%; transition: width 1.5s linear; }
.segurar .texto { position: relative; }
.segurar.enviando { opacity: .6; }

/* Listas */
.lista { list-style: none; margin: 0; padding: 0; display: grid; gap: .5rem; }
.lista li { background: var(--cartao); border: 1px solid var(--borda); border-radius: 12px; padding: .75rem .9rem; }
.lista li small { display: block; color: var(--suave); margin-top: .25rem; }
.lista li.falhou { border-color: var(--erro); }
.ajuste { display: grid; gap: .5rem; }
.ajuste .linha { display: grid; grid-template-columns: 1fr 80px; gap: .5rem; }

.dica { color: var(--suave); font-size: .9rem; }

.vazio { text-align: center; color: var(--suave); padding: 2rem 1rem; }

.aviso {
  position: fixed; left: 50%; bottom: calc(env(safe-area-inset-bottom) + 4.8rem); transform: translateX(-50%);
  background: #000c; color: #fff; padding: .6rem 1rem; border-radius: 10px; z-index: 3; font-size: .95rem;
}