/* ============================================================
   SUR — Tela operacional
   Prioridade: letras enormes, alto contraste, leitura a distância.
   ============================================================ */

:root {
  --bg-idle: #1b2430;
  --bg-put:  #0d3b2e;
  --bg-get:  #4a2408;
  --fg: #f4f6f8;
  --fg-dim: #aab4c0;
  --accent-put: #2ecc71;
  --accent-get: #ff9f43;
  --accent-idle: #6c8299;
  --warn: #f1c40f;
  --error: #e74c3c;
  --ok: #2ecc71;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  background: var(--bg-idle);
  color: var(--fg);
  font-family: 'Segoe UI', Roboto, Arial, sans-serif;
}

.screen {
  height: 100vh;
  width: 100vw;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4vh 4vw;
  transition: background-color .25s ease;
  background: var(--bg-idle);
}

.screen.put { background: var(--bg-put); }
.screen.get { background: var(--bg-get); }

.icon {
  font-size: clamp(3rem, 10vw, 6rem);
  line-height: 1;
  margin-bottom: 1vh;
}

.title {
  font-size: clamp(2rem, 7vw, 4.5rem);
  font-weight: 800;
  letter-spacing: .04em;
  margin: 0 0 2vh 0;
  color: var(--fg);
}

.screen.put .title { color: var(--accent-put); }
.screen.get .title { color: var(--accent-get); }

.endereco {
  font-size: clamp(4rem, 16vw, 11rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: .02em;
  margin: 1vh 0;
  min-height: 1em;
}

.prompt {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 600;
  color: var(--fg-dim);
  margin: 2vh 0 1vh 0;
  letter-spacing: .08em;
}

.count {
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 800;
  margin: 1vh 0;
  min-height: 1.2em;
}

.screen.put .count { color: var(--accent-put); }
.screen.get .count { color: var(--accent-get); }

.last {
  margin-top: 3vh;
  min-height: 4em;
  max-width: 90vw;
}

.last-label {
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  color: var(--fg-dim);
  text-transform: uppercase;
  letter-spacing: .1em;
  margin-bottom: .3em;
}

.last-title {
  font-size: clamp(1.3rem, 3.5vw, 2.2rem);
  font-weight: 700;
  overflow-wrap: anywhere;
}

.last-author {
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  color: var(--fg-dim);
  margin-top: .2em;
}

/* Toast — mensagens de erro/aviso, some sozinho, nunca precisa de clique */
.toast {
  position: fixed;
  left: 50%;
  bottom: 5vh;
  transform: translateX(-50%) translateY(150%);
  max-width: 92vw;
  padding: 1.2em 1.8em;
  border-radius: .8em;
  font-size: clamp(1.1rem, 3vw, 1.8rem);
  font-weight: 700;
  text-align: center;
  box-shadow: 0 .5em 2em rgba(0,0,0,.4);
  opacity: 0;
  transition: transform .25s ease, opacity .25s ease;
  z-index: 10;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast.warning { background: var(--warn); color: #2b2200; }
.toast.error   { background: var(--error); color: #fff; }
.toast.ok      { background: var(--ok); color: #062915; }

/* Input do leitor: fica fora da vista mas continua focável */
#scanner-input {
  position: fixed;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  opacity: 0;
  border: 0;
  padding: 0;
  pointer-events: none;
}

@media (max-width: 480px) {
  .screen { padding: 3vh 5vw; }
}