:root {
  --sfondo: #0b0f1a;
  --superficie: #151b2b;
  --bordo: #26304a;
  --testo: #eef1f8;
  --testo-tenue: #9aa6c0;
  --oro: #f2b33d;
  --oro-scuro: #8a5a10;
  --errore: #ff8f7a;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--sfondo);
  color: var(--testo);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}

[hidden] {
  display: none !important;
}

.nascosto {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

h1 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

button,
input {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: 1px solid var(--bordo);
  border-radius: 999px;
  background: var(--superficie);
  padding: 0.5rem 0.9rem;
  min-height: 44px;
}

button:focus-visible,
input:focus-visible,
a:focus-visible {
  outline: 2px solid var(--oro);
  outline-offset: 2px;
}

input {
  width: 100%;
  min-height: 44px;
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--bordo);
  border-radius: 999px;
  background: var(--superficie);
}

/* Accesso */

.accesso {
  min-height: 100%;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 1.25rem;
  padding: 1.5rem;
  text-align: center;
}

.accesso form {
  display: grid;
  gap: 0.6rem;
  width: min(20rem, 80vw);
  text-align: left;
}

.accesso label {
  font-size: 0.85rem;
  color: var(--testo-tenue);
}

.accesso button[type="submit"],
.scrivi button {
  background: var(--oro);
  border-color: var(--oro);
  color: #1a1204;
  font-weight: 600;
}

.errore {
  min-height: 1.5em;
  margin: 0;
  color: var(--errore);
  font-size: 0.9rem;
}

/* App */

.app {
  height: 100%;
  max-width: 36rem;
  margin: 0 auto;
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  padding: env(safe-area-inset-top) 1rem env(safe-area-inset-bottom);
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.75rem 0;
}

.comandi {
  display: flex;
  gap: 0.4rem;
}

.comandi button {
  font-size: 0.8rem;
  padding: 0.3rem 0.7rem;
  color: var(--testo-tenue);
}

.avviso {
  margin: 0 0 0.5rem;
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--oro-scuro);
  border-radius: 0.75rem;
  font-size: 0.9rem;
}

.messaggi {
  list-style: none;
  margin: 0;
  padding: 0.5rem 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.messaggio {
  max-width: 88%;
  padding: 0.6rem 0.9rem;
  border-radius: 1rem;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.messaggio--utente {
  align-self: flex-end;
  background: #24304f;
  border-bottom-right-radius: 0.3rem;
}

.messaggio--jarvis {
  align-self: flex-start;
  background: var(--superficie);
  border: 1px solid var(--bordo);
  border-bottom-left-radius: 0.3rem;
}

.messaggio--errore {
  align-self: center;
  color: var(--errore);
  font-size: 0.9rem;
}

.agente {
  display: block;
  margin-bottom: 0.2rem;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--oro);
}

.azione {
  align-self: stretch;
  padding: 0.8rem 0.9rem;
  border: 1px solid var(--oro-scuro);
  border-radius: 1rem;
  background: #1b1a14;
}

.azione h2 {
  margin: 0 0 0.3rem;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--oro);
}

.azione p {
  margin: 0 0 0.7rem;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.azione .pulsanti {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.azione .conferma,
.azione a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--oro);
  background: var(--oro);
  color: #1a1204;
  font-weight: 600;
  text-decoration: none;
}

.azione .esito {
  margin: 0;
  color: var(--testo-tenue);
  font-size: 0.9rem;
}

/* Sfera e scrittura */

footer {
  display: grid;
  justify-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0 1rem;
}

.sfera {
  position: relative;
  width: 6.25rem;
  height: 6.25rem;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 42%, #fff6dc 0%, var(--oro) 42%, var(--oro-scuro) 100%);
  box-shadow: 0 0 2.5rem rgba(242, 179, 61, 0.35);
  color: #1a1204;
  font-size: 0.8rem;
  font-weight: 600;
  /* Spazio per gli anelli, che escono dal cerchio. */
  margin: 1.6rem;
}

.sfera::before,
.sfera::after {
  content: "";
  position: absolute;
  inset: -0.9rem;
  border-radius: 50%;
  border: 2px solid rgba(242, 179, 61, 0.35);
  pointer-events: none;
}

.sfera::after {
  inset: -1.5rem;
  border-style: dashed;
  border-color: rgba(242, 179, 61, 0.2);
}

.sfera--ferma {
  width: 5.5rem;
  height: 5.5rem;
}

.scrivi {
  display: flex;
  gap: 0.5rem;
  width: 100%;
}

.piede {
  margin: 0;
  font-size: 0.75rem;
  color: var(--testo-tenue);
  text-align: center;
}

@media (prefers-reduced-motion: no-preference) {
  .sfera::after {
    animation: gira 24s linear infinite;
  }

  [data-stato="ascolto"] .sfera::before {
    animation: pulsa 1.2s ease-in-out infinite;
  }

  [data-stato="pensa"] .sfera::after {
    animation-duration: 3s;
  }

  [data-stato="pensa"] .sfera {
    animation: respira 1.6s ease-in-out infinite;
  }
}

[data-stato="ascolto"] .sfera {
  box-shadow: 0 0 3.5rem rgba(242, 179, 61, 0.7);
}

[data-stato="pensa"] .sfera {
  filter: saturate(0.7);
}

@keyframes gira {
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulsa {
  50% {
    transform: scale(1.12);
    opacity: 0.4;
  }
}

@keyframes respira {
  50% {
    transform: scale(0.94);
  }
}