/* ==========================================================================
   ZakoGo — ai.css (owner: AI-CORE)   SPEC §9.8

   Linguaggio visivo condiviso delle superfici AI: pannello di streaming,
   pill della ricerca web, bolle della chat, gate card, stime di costo,
   foglio Impostazioni.

   Regole
     - Solo token già definiti in styles.css. Nessun font nuovo, nessun
       gradiente, nessun glow.
     - Accento AI = --violet; il TESTO usa sempre --violet-ink (#4B2ACC),
       che supera 4.5:1 sia su --card sia su --violet-tint.
     - Una sola animazione discreta (il caret dello streaming), spenta da
       prefers-reduced-motion.
   ========================================================================== */

.ai-scope,
.ai-panel,
.ai-gate,
.ai-chat,
.ai-settings {
  --ai: var(--violet);
  --ai-ink: var(--violet-ink);
  --ai-tint: var(--violet-tint);
}

/* --------------------------------------------------------------------------
   1. Gate card — "manca la chiave" / "sei offline"
   -------------------------------------------------------------------------- */

.ai-gate {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr); /* larghezza di .squircle */
  gap: 10px 12px;
  padding: 16px;
  border-radius: var(--radius-lg);
  border: 1.5px solid var(--line);
  background: var(--card);
  box-shadow: var(--shadow-card);
}

/* usa il componente .squircle di styles.css, solo ritinto sull'accento AI */
.ai-gate-mark {
  background: var(--ai-tint);
  color: var(--ai-ink);
}

.ai-gate-text { min-width: 0; }

.ai-gate-title {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.25;
  color: var(--pine-900);
}

.ai-gate-body {
  margin-top: 4px;
  font-size: 14.5px;
  line-height: 1.45;
  color: var(--ink-soft);
  overflow-wrap: anywhere;
}

.ai-gate-btn {
  grid-column: 1 / -1;
  margin-top: 2px;
}

/* --------------------------------------------------------------------------
   2. Pannello di streaming
   --------------------------------------------------------------------------
   Markup atteso:
     <div class="ai-panel is-streaming">
       <div class="ai-panel-head">{icon sparkle}<span>Claude sta scrivendo…</span></div>
       <div class="ai-pill">…</div>            (opzionale, durante la ricerca)
       <div class="ai-stream" aria-live="polite">testo in arrivo</div>
     </div>
   Togli .is-streaming quando la risposta è completa: il caret sparisce.
   -------------------------------------------------------------------------- */

.ai-panel {
  padding: 14px 16px 16px;
  border-radius: var(--radius-lg);
  border: 1.5px solid var(--line);
  background: var(--card);
  box-shadow: var(--shadow-card);
}

.ai-panel-head {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--ai-ink);
}
.ai-panel-head .icn { width: 18px; height: 18px; color: var(--ai-ink); flex: 0 0 auto; }

.ai-panel-head + .ai-stream,
.ai-panel-head + .ai-pill { margin-top: 10px; }
.ai-pill + .ai-stream { margin-top: 10px; }

.ai-stream {
  max-height: 46dvh;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  font-size: 15px;
  line-height: 1.55;
  color: var(--pine-900);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
@supports not (max-height: 46dvh) {
  .ai-stream { max-height: 46vh; }
}

.ai-stream:empty::before {
  content: "In attesa della risposta…";
  color: var(--ink-faint);
}

/* caret discreto: pulsa solo mentre la risposta sta arrivando */
.ai-panel.is-streaming .ai-stream::after {
  content: "";
  display: inline-block;
  width: 2px;
  height: 1.05em;
  margin-left: 3px;
  vertical-align: -2px;
  background: var(--ai);
  animation: ai-caret 1.1s steps(1, end) infinite;
}
@keyframes ai-caret {
  0%, 55%  { opacity: 1; }
  56%, 100%{ opacity: 0; }
}

.ai-panel-foot {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}
.ai-panel-foot .btn { flex: 1 1 auto; }

/* --------------------------------------------------------------------------
   3. Pill "sto cercando sul web"
   -------------------------------------------------------------------------- */

.ai-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: 100%;
  padding: 7px 13px;
  border-radius: var(--radius-pill);
  background: var(--ai-tint);
  color: var(--ai-ink);
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.3;
}
.ai-pill .icn { width: 16px; height: 16px; color: var(--ai-ink); flex: 0 0 auto; }
.ai-pill .ai-pill-text {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ai-pill-dot {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--ai);
  animation: ai-blink 1.2s ease-in-out infinite;
}
@keyframes ai-blink {
  0%, 100% { opacity: .35; }
  50%      { opacity: 1; }
}

/* --------------------------------------------------------------------------
   4. Chat concierge
   --------------------------------------------------------------------------
   Markup atteso:
     <div class="ai-chat">
       <div class="ai-chat-list">
         <div class="ai-msg ai-msg--user"><div class="ai-bubble">…</div></div>
         <div class="ai-msg ai-msg--claude"><div class="ai-bubble">…</div></div>
       </div>
       <div class="ai-chat-bar"> … </div>
     </div>
   -------------------------------------------------------------------------- */

.ai-chat {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 0;
}

.ai-chat-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 0;
  padding: 2px 0;
}

.ai-msg { display: flex; }
.ai-msg--user { justify-content: flex-end; }
.ai-msg--claude { justify-content: flex-start; }

.ai-bubble {
  max-width: 88%;
  padding: 10px 14px;
  font-size: 15px;
  line-height: 1.5;
  color: var(--pine-900);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.ai-msg--user .ai-bubble {
  background: var(--pine-100);
  /* bordo dello stesso colore del fondo: stessa metrica della bolla di Claude */
  border: 1.5px solid var(--pine-100);
  border-radius: var(--radius-lg) var(--radius-lg) var(--radius-sm) var(--radius-lg);
}

.ai-msg--claude .ai-bubble {
  background: var(--snow);
  border: 1.5px solid var(--line);
  border-radius: var(--radius-lg) var(--radius-lg) var(--radius-lg) var(--radius-sm);
}

/* il messaggio in arrivo riusa il caret del pannello */
.ai-msg.is-streaming .ai-bubble::after {
  content: "";
  display: inline-block;
  width: 2px;
  height: 1.05em;
  margin-left: 3px;
  vertical-align: -2px;
  background: var(--ai);
  animation: ai-caret 1.1s steps(1, end) infinite;
}

.ai-msg-extra {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

/* chip "Aggiungi all'itinerario (4 voci)" sotto una risposta */
.ai-import-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 44px;
  padding: 0 15px;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--ai);
  background: var(--ai-tint);
  color: var(--ai-ink);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
  transition: background-color 140ms ease, transform 90ms ease;
}
.ai-import-chip .icn { width: 17px; height: 17px; color: var(--ai-ink); }
.ai-import-chip:active { transform: scale(.97); }
.ai-import-chip:disabled { opacity: .5; pointer-events: none; }

.ai-chat-bar {
  display: flex;
  align-items: flex-end;
  gap: 8px;
}
.ai-chat-bar textarea,
.ai-chat-bar .ai-chat-input {
  min-height: 48px;
  max-height: 130px;
  resize: none;
  line-height: 1.4;
}
.ai-chat-bar .btn-icon,
.ai-chat-bar .icon-btn {
  flex: 0 0 auto;
  background: var(--pine-700);
  color: var(--snow);
  border-radius: var(--radius-md);
}
.ai-chat-bar .btn-icon:active,
.ai-chat-bar .icon-btn:active { background: var(--pine-900); }
.ai-chat-bar .btn-icon:disabled,
.ai-chat-bar .icon-btn:disabled { opacity: .45; }

.ai-chat-empty {
  padding: 18px 4px;
  text-align: center;
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   5. Stime di costo (testo minore, sempre leggibile)
   -------------------------------------------------------------------------- */

.ai-cost {
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--ink-soft);
}

.ai-cost-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--line);
  background: var(--snow);
}
.ai-cost-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 2px 12px;
  padding: 9px 13px;
  border-bottom: 1px solid var(--line);
}
.ai-cost-list li:last-child { border-bottom: 0; }
.ai-cost-name { font-size: 14.5px; font-weight: 600; color: var(--pine-900); }
.ai-cost-val {
  font-size: 13.5px;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}
.ai-cost-note { margin-top: 8px; }

/* --------------------------------------------------------------------------
   6. Foglio Impostazioni
   -------------------------------------------------------------------------- */

.ai-settings { padding-top: 2px; }

.ai-section { margin-top: 22px; }

.ai-section-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.25;
  color: var(--pine-900);
  margin-bottom: 8px;
}

.ai-key-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.ai-key-wrap > .ai-key-input {
  padding-right: 96px;
  font-size: 16px;
  letter-spacing: .2px;
}
.ai-key-input:focus {
  border-color: var(--pine-500);
  box-shadow: 0 0 0 3px rgba(46,125,87,.16);
  outline: none;
}

.ai-key-toggle {
  position: absolute;
  right: 5px;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  border-radius: var(--radius-sm);
  background: none;
  color: var(--pine-700);
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 700;
  transition: background-color 140ms ease, color 140ms ease;
}
.ai-key-toggle:active { background: var(--pine-050); color: var(--pine-900); }
.ai-key-toggle:focus-visible { outline-offset: -1px; }

.ai-key-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  margin-top: 10px;
}
.ai-key-actions .btn { flex: 0 0 auto; }
.ai-key-actions .link-action { text-align: left; }

.btn.is-busy { opacity: .8; }
.btn.is-busy .icn { animation: ai-spin 900ms linear infinite; }
@keyframes ai-spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.ai-models { display: flex; flex-direction: column; gap: 8px; }
.ai-model { align-items: flex-start; }

/* --------------------------------------------------------------------------
   6bis. Ponte chat (MCP) — SPEC §10.3
   --------------------------------------------------------------------------
   L'indirizzo del ponte contiene la parte segreta: stesso trattamento della
   chiave API (campo password + mostra/nascondi), stessa metrica.
   -------------------------------------------------------------------------- */

.sync-intro { margin: 0 2px 13px; }

/* stessa geometria del campo chiave: spazio a destra per "Mostra/Nascondi" */
.ai-key-wrap > .sync-url-input {
  padding-right: 96px;
  font-size: 16px;
  letter-spacing: .2px;
  /* gli indirizzi lunghi non devono allargare il foglio */
  text-overflow: ellipsis;
}
/* il fuoco su input[type=password] non è coperto dalla regola generale */
.sync-url-input:focus {
  border-color: var(--pine-500);
  box-shadow: 0 0 0 3px rgba(46,125,87,.16);
  outline: none;
}
.sync-field.is-invalid .sync-url-input,
.sync-url-input[aria-invalid="true"] {
  border-color: var(--berry);
  box-shadow: 0 0 0 3px rgba(214,51,108,.14);
}

.sync-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin-top: 12px;
}
.sync-actions .btn { flex: 1 1 auto; }
/* .btn è inline-flex: senza questo l'attributo hidden non nasconderebbe nulla */
.sync-actions .btn[hidden] { display: none; }

.sync-when { margin: 10px 2px 0; }

/* --------------------------------------------------------------------------
   7. Schermi stretti
   -------------------------------------------------------------------------- */

@media (max-width: 359.98px) {
  .ai-gate { grid-template-columns: 1fr; }
  .ai-gate-mark { display: none; }
  .ai-bubble { max-width: 94%; font-size: 14.5px; }
  .ai-key-wrap > .ai-key-input,
  .ai-key-wrap > .sync-url-input { padding-right: 88px; }
  .ai-key-toggle { padding: 0 9px; font-size: 13.5px; }
  .ai-cost-list li { flex-direction: column; align-items: flex-start; }
  .sync-actions .btn { flex: 1 1 100%; }
}

/* --------------------------------------------------------------------------
   8. Movimento ridotto — niente caret, niente lampeggii
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  .ai-panel.is-streaming .ai-stream::after,
  .ai-msg.is-streaming .ai-bubble::after {
    animation: none !important;
    opacity: .55;
  }
  .ai-pill-dot { animation: none !important; opacity: 1; }
  .btn.is-busy .icn { animation: none !important; }
}

/* --------------------------------------------------------------------------
   9. Hover (solo puntatore fine)
   -------------------------------------------------------------------------- */

@media (hover: hover) and (pointer: fine) {
  .ai-key-toggle:hover { background: var(--pine-050); color: var(--pine-900); }
  .ai-import-chip:hover { filter: brightness(.97); }
  .ai-chat-bar .btn-icon:hover,
  .ai-chat-bar .icon-btn:hover { background: var(--pine-800); }
}