/* Buffalo AI - interfaccia scura, pensata prima per lo smartphone. */
:root {
  --fondo: #0b1120;
  --fondo-2: #111c33;
  --oro: #e8b64c;
  --oro-scuro: #a97d24;
  --testo: #eaf0fb;
  --testo-tenue: #8da0be;
  --rosso: #e4584f;
  --verde: #4fbf85;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body {
  margin: 0; height: 100%;
  background: var(--fondo);
  color: var(--testo);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, system-ui, sans-serif;
  overscroll-behavior: none;
}
.schermata { display: none; height: 100dvh; flex-direction: column; }
.schermata.attiva { display: flex; }

/* ---------- login ---------- */
#schermata-login { align-items: center; justify-content: center; padding: 24px; }
.login-box { width: 100%; max-width: 340px; text-align: center; }
.logo { width: 108px; height: 108px; border-radius: 26px; margin-bottom: 18px; }
.login-box h1 { font-size: 30px; letter-spacing: 4px; margin: 0 0 4px; color: var(--oro); font-weight: 700; }
.sottotitolo { color: var(--testo-tenue); font-size: 13px; margin: 0 0 28px; }
form input {
  width: 100%; padding: 15px 16px; margin-bottom: 12px; font-size: 16px;
  border: 1px solid #25334d; border-radius: 14px;
  background: var(--fondo-2); color: var(--testo);
}
form input:focus { outline: 2px solid var(--oro-scuro); }
#bottone-entra {
  width: 100%; padding: 15px; font-size: 17px; font-weight: 600;
  border: 0; border-radius: 14px; cursor: pointer;
  background: linear-gradient(180deg, var(--oro), var(--oro-scuro)); color: #1a1205;
}
#bottone-entra:disabled { opacity: .5; }
.errore { color: var(--rosso); font-size: 14px; min-height: 20px; margin-top: 14px; }

/* ---------- agente ---------- */
header {
  display: flex; align-items: center; gap: 12px;
  padding: calc(env(safe-area-inset-top) + 12px) 16px 12px;
  border-bottom: 1px solid #1c2740;
}
.logo-piccolo { width: 40px; height: 40px; border-radius: 11px; }
.intestazione-testo { flex: 1; min-width: 0; }
header h1 { font-size: 17px; letter-spacing: 3px; margin: 0; color: var(--oro); }
#stato { margin: 3px 0 0; font-size: 13px; color: var(--testo-tenue); display: flex; align-items: center; gap: 7px; }
.pallino { width: 9px; height: 9px; border-radius: 50%; background: var(--verde); flex: none; }
.pallino.ascolto { background: var(--oro); animation: pulsa 1.1s infinite; }
.pallino.pensa { background: #6f9bff; animation: pulsa 1.1s infinite; }
.pallino.parla { background: var(--oro); }
.pallino.guasto { background: var(--rosso); }
@keyframes pulsa { 50% { opacity: .25; } }
.icona { background: none; border: 0; color: var(--testo-tenue); font-size: 22px; cursor: pointer; padding: 6px; }

main { flex: 1; overflow-y: auto; padding: 16px; -webkit-overflow-scrolling: touch; }
#cronologia { display: flex; flex-direction: column; gap: 12px; }
.bolla { max-width: 86%; padding: 12px 15px; border-radius: 18px; font-size: 16px; line-height: 1.45; white-space: pre-wrap; word-wrap: break-word; }
.bolla.io { align-self: flex-end; background: #203457; border-bottom-right-radius: 5px; }
.bolla.agente { align-self: flex-start; background: var(--fondo-2); border: 1px solid #22304b; border-bottom-left-radius: 5px; }
.bolla.guasto { align-self: flex-start; background: #38201e; border: 1px solid #5d2c28; color: #ffc9c4; }
.parziale { color: var(--testo-tenue); font-style: italic; margin: 12px 2px 0; min-height: 20px; font-size: 15px; }

footer { padding: 10px 16px calc(env(safe-area-inset-bottom) + 14px); border-top: 1px solid #1c2740; }
.avviso { background: #2a2310; border: 1px solid #5c4a16; color: #f0d79a; padding: 10px 12px; border-radius: 12px; font-size: 13px; margin-bottom: 12px; }
.nascosto { display: none; }
.comandi { display: flex; align-items: center; justify-content: center; gap: 16px; margin-bottom: 10px; }
.mic {
  position: relative; width: 84px; height: 84px; border-radius: 50%; border: 0; cursor: pointer;
  background: linear-gradient(180deg, var(--oro), var(--oro-scuro)); color: #1a1205;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 28px rgba(232,182,76,.28);
}
.mic.attivo { background: linear-gradient(180deg, #ff8a7a, #c9453a); color: #2a0b08; }
.mic .onda { position: absolute; inset: -6px; border-radius: 50%; border: 2px solid var(--oro); opacity: 0; }
.mic.attivo .onda { animation: anello 1.4s infinite; }
@keyframes anello { 0% { transform: scale(.95); opacity: .7; } 100% { transform: scale(1.35); opacity: 0; } }
.stop { padding: 13px 20px; border-radius: 14px; border: 1px solid #38465f; background: var(--fondo-2); color: var(--testo); font-size: 15px; cursor: pointer; }
.stop:disabled { opacity: .35; }
#form-testo { display: flex; gap: 8px; }
#form-testo input { flex: 1; padding: 13px 15px; font-size: 16px; border-radius: 13px; border: 1px solid #25334d; background: var(--fondo-2); color: var(--testo); }
#form-testo button { width: 50px; border-radius: 13px; border: 0; background: #22304b; color: var(--oro); font-size: 20px; cursor: pointer; }
@media (min-width: 760px) { main { max-width: 760px; margin: 0 auto; width: 100%; } footer { max-width: 760px; margin: 0 auto; width: 100%; } }