:root {
  --verde: #9CE84C; --preto: #000000; --branco: #FFFFFF;
  --cinza: #1c1c1c; --cinza2: #2a2a2a; --texto2: #b8b8b8; --erro: #ff6b6b;
  font-family: "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
}
html, body { margin: 0; height: 100%; background: #000; overflow: hidden; cursor: none; user-select: none; }
body.cursor { cursor: default; }

#stage { position: fixed; inset: 0; background: #000; }
/* Superfícies empilhadas. "front" fica visível por cima; "ready" fica pronta logo abaixo,
   totalmente coberta pela frente (fundo opaco), para o primeiro quadro já estar decodificado. */
.surface { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; background: #000;
  visibility: hidden; z-index: 0; pointer-events: none; }
.surface.ready { visibility: visible; z-index: 1; }
.surface.front { visibility: visible; z-index: 3; }

.neutral { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2vh; }
.neutral .logo { width: 34vw; max-width: 720px; height: auto; }
.neutral .product { color: var(--branco); font-size: 3vw; font-weight: 600; letter-spacing: .02em; }
.neutral-msg { color: var(--texto2); font-size: 1.4vw; min-height: 1em; }

#diag { position: fixed; left: 12px; bottom: 12px; z-index: 50; background: rgba(0,0,0,.72); color: var(--verde);
  font: 13px/1.35 Consolas, monospace; padding: 8px 12px; border-radius: 6px; white-space: pre; }
#paused-banner { position: fixed; top: 0; left: 0; right: 0; z-index: 60; background: var(--verde); color: #000;
  font-weight: 700; text-align: center; padding: 6px; font-size: 14px; }

#maint { position: fixed; inset: 0; z-index: 100; background: rgba(0,0,0,.78); display: flex; align-items: center; justify-content: center; cursor: default; }
#maint[hidden], #diag[hidden], #paused-banner[hidden], section[hidden] { display: none; }
.panel { width: min(1100px, 94vw); max-height: 92vh; overflow: auto; background: var(--cinza); color: var(--branco); border-radius: 12px; border: 1px solid #333; }
.panel header { display: flex; gap: 16px; align-items: center; padding: 14px 18px; background: #000; border-bottom: 3px solid var(--verde); border-radius: 12px 12px 0 0; }
.panel header > div { flex: 1; }
.mlogo { height: 40px; width: auto; }
.muted { color: var(--texto2); font-size: 13px; }
section { padding: 18px; }
#m-pin { text-align: center; }
#m-pin p { font-size: 18px; }
#pin-input { font-size: 32px; width: 220px; text-align: center; letter-spacing: .4em; padding: 8px; border-radius: 8px; border: 2px solid var(--verde); background: #000; color: #fff; }
.keypad { display: grid; grid-template-columns: repeat(3, 72px); gap: 8px; justify-content: center; margin-top: 14px; }
.keypad button { height: 56px; font-size: 22px; }
.err { color: var(--erro); min-height: 1.2em; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 14px; }
.card { background: var(--cinza2); border-radius: 10px; padding: 12px 14px; }
.card.wide { grid-column: 1 / -1; }
.card h3 { margin: 0 0 10px; font-size: 15px; color: var(--verde); text-transform: uppercase; letter-spacing: .05em; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin: 8px 0; }
.hint { color: var(--texto2); font-size: 12px; margin: 4px 0; }
button, select, input[type=password], input[type=text] { font: inherit; font-size: 14px; }
button { background: #3a3a3a; color: #fff; border: 1px solid #555; border-radius: 6px; padding: 8px 12px; cursor: pointer; }
button:hover, button:focus-visible { border-color: var(--verde); outline: none; }
button.primary { background: var(--verde); color: #000; border-color: var(--verde); font-weight: 600; }
button.danger { background: #5a1f1f; border-color: #8a3030; }
button.ghost { background: transparent; border: none; font-size: 20px; }
select, input[type=password] { background: #000; color: #fff; border: 1px solid #555; border-radius: 6px; padding: 7px; }
dl { display: grid; grid-template-columns: auto 1fr; gap: 4px 10px; margin: 0; font-size: 13px; }
dt { color: var(--texto2); } dd { margin: 0; word-break: break-all; }
.display-opt { display: block; padding: 6px 8px; margin: 4px 0; border: 1px solid #444; border-radius: 6px; cursor: pointer; }
.display-opt.sel { border-color: var(--verde); background: rgba(156,232,76,.12); }
.events { font: 12px/1.4 Consolas, monospace; max-height: 200px; overflow: auto; padding-left: 22px; margin: 0; color: #ddd; }
.msg { background: rgba(156,232,76,.15); border: 1px solid var(--verde); padding: 8px 12px; border-radius: 6px; margin-bottom: 12px; }
.msg.bad { background: rgba(255,107,107,.15); border-color: var(--erro); }

/* tela de vínculo (legível a distância) */
#pairing { position: fixed; inset: 0; z-index: 40; background: #000; color: #fff; display: flex; align-items: center; justify-content: center; }
#pairing[hidden] { display: none; }
.pair-box { text-align: center; max-width: 90vw; }
.pair-logo { width: 22vw; max-width: 420px; height: auto; }
.pair-produto { font-size: 2.2vw; font-weight: 600; margin-top: 1vh; }
.pair-titulo { font-size: 2.6vw; margin-top: 4vh; color: #ddd; }
.pair-linha { display: flex; align-items: center; justify-content: center; margin-top: 2vh; }
.pair-texto { text-align: left; }
.pair-codigo { font: 700 8.6vw/1.1 Consolas, "Cascadia Mono", monospace; letter-spacing: .12em; color: var(--verde); margin: 0 0 2vh; }
.pair-passos { margin: 0; padding-left: 2.2vw; font-size: 1.7vw; color: #ddd; line-height: 1.6; }
.pair-alternativa { margin-top: 1.6vh; font-size: 1.3vw; color: #9a9a9a; }
.pair-qr-caixa { margin-left: 5vw; background: #fff; border-radius: 1vw; padding: 1.2vw 1.2vw .8vw; text-align: center; flex: none; }
.pair-qr-caixa[hidden] { display: none; }
.pair-qr svg { display: block; width: 34vh; height: 34vh; }
.pair-qr-legenda { color: #111; font-size: 1.35vw; font-weight: 700; margin-top: .6vh; }
.pair-status { margin-top: 3vh; font-size: 1.5vw; color: var(--texto2); min-height: 1.5em; }
.pair-status.erro { color: #ffb4a8; }
.pair-rodape { margin-top: 4vh; font-size: 1.05vw; color: #888; line-height: 1.6; }

.saida-titulo { margin: 10px 0 2px; font-weight: 600; color: var(--verde); }