/* ==========================================================================
   AppToApp · Stile globale
   Design minimale ispirato a Linear/Vercel · dark mode di default
   Accenti viola/blu · font system-ui · mobile-first · accessibile (WCAG AA)
   ========================================================================== */

/* ---- Variabili di tema -------------------------------------------------- */
:root {
  /* Superfici (dark di default) */
  --sfondo:        #0a0a0f;
  --sfondo-2:      #111118;
  --pannello:      #16161f;
  --pannello-2:    #1c1c28;
  --bordo:         #262633;
  --bordo-chiaro:  #34344a;

  /* Testo */
  --testo:         #ededf2;
  --testo-soft:    #a0a0b0;
  --testo-debole:  #6b6b80;

  /* Accenti viola/blu */
  --accento:       #7c5cff;
  --accento-2:     #4d7cff;
  --accento-soft:  #9d86ff;
  --gradiente:     linear-gradient(135deg, #7c5cff 0%, #4d7cff 100%);

  /* Stati */
  --ok:            #2ecc71;
  --attenzione:    #f5a623;
  --errore:        #ff5c6c;

  /* Forma */
  --raggio:        14px;
  --raggio-sm:     9px;
  --raggio-lg:     20px;
  --ombra:         0 8px 30px rgba(0,0,0,.4);
  --ombra-soft:    0 2px 10px rgba(0,0,0,.25);

  /* Tipografia */
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Fira Code", Menlo, Consolas, monospace;

  --transizione: 160ms cubic-bezier(.4,0,.2,1);
}

/* ---- Reset essenziale --------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--sfondo);
  color: var(--testo);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  min-height: 100dvh;
}

/* Sfondo decorativo a "aurora" molto soft */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(60vw 50vh at 15% -10%, rgba(124,92,255,.16), transparent 60%),
    radial-gradient(55vw 45vh at 95% 0%, rgba(77,124,255,.13), transparent 55%);
  pointer-events: none;
}

img, svg { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; color: inherit; }
a { color: var(--accento-soft); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Accessibilità: focus sempre visibile */
:focus-visible {
  outline: 2px solid var(--accento-soft);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Rispetta chi preferisce meno animazioni */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}

/* Stato nascosto per Alpine prima dell'idratazione */
[x-cloak] { display: none !important; }

/* ---- Layout principale -------------------------------------------------- */
.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
}

/* Intestazione */
.testata {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px clamp(16px, 4vw, 32px);
  background: rgba(10,10,15,.72);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--bordo);
}

.marchio {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: -.02em;
  font-size: 1.05rem;
}
.marchio .logo {
  width: 30px; height: 30px;
  border-radius: 9px;
  background: var(--gradiente);
  display: grid; place-items: center;
  color: #fff; font-weight: 800; font-size: .8rem;
  box-shadow: 0 4px 14px rgba(124,92,255,.45);
}
.marchio .gratis {
  font-size: .68rem; font-weight: 700;
  color: var(--ok);
  border: 1px solid rgba(46,204,113,.35);
  background: rgba(46,204,113,.1);
  padding: 2px 8px; border-radius: 999px;
  letter-spacing: .02em;
}

.nav { margin-left: auto; display: flex; gap: 4px; }
.nav button {
  background: transparent;
  border: 1px solid transparent;
  color: var(--testo-soft);
  padding: 8px 14px;
  border-radius: var(--raggio-sm);
  cursor: pointer;
  font-weight: 600;
  font-size: .9rem;
  transition: var(--transizione);
  display: inline-flex; align-items: center; gap: 7px;
}
.nav button:hover { color: var(--testo); background: var(--pannello); }
.nav button.attivo {
  color: var(--testo);
  background: var(--pannello-2);
  border-color: var(--bordo-chiaro);
}

/* Contenuto */
.contenuto {
  flex: 1;
  width: 100%;
  max-width: 1320px;
  margin: 0 auto;
  padding: clamp(20px, 4vw, 40px) clamp(16px, 4vw, 32px) 64px;
}

/* ---- Tipografia di sezione ---------------------------------------------- */
.titolo-grande {
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.1;
  margin-bottom: 10px;
}
.titolo-grande .evidenza {
  background: var(--gradiente);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.sottotitolo { color: var(--testo-soft); font-size: 1.02rem; max-width: 60ch; }

.sezione-titolo { font-size: 1.35rem; font-weight: 700; letter-spacing: -.02em; }
.etichetta {
  display: block; font-size: .82rem; font-weight: 600;
  color: var(--testo-soft); margin-bottom: 7px;
}

/* ---- Form / controlli --------------------------------------------------- */
textarea, input[type="text"], input[type="password"], input[type="number"], select {
  width: 100%;
  background: var(--pannello);
  border: 1px solid var(--bordo);
  border-radius: var(--raggio);
  color: var(--testo);
  padding: 13px 15px;
  transition: var(--transizione);
}
textarea:focus, input:focus, select:focus {
  border-color: var(--accento);
  box-shadow: 0 0 0 3px rgba(124,92,255,.18);
  outline: none;
}
textarea::placeholder, input::placeholder { color: var(--testo-debole); }
select { cursor: pointer; appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23a0a0b0' stroke-width='2.5'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 14px center;
  padding-right: 38px;
}

.prompt-grande { min-height: 130px; resize: vertical; font-size: 1.05rem; line-height: 1.5; }

input[type="range"] { width: 100%; accent-color: var(--accento); cursor: pointer; }

/* ---- Bottoni ------------------------------------------------------------ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid var(--bordo-chiaro);
  background: var(--pannello-2);
  color: var(--testo);
  padding: 11px 18px;
  border-radius: var(--raggio);
  font-weight: 600; font-size: .94rem;
  cursor: pointer;
  transition: var(--transizione);
  white-space: nowrap;
}
.btn:hover:not(:disabled) { border-color: var(--accento); background: var(--pannello); transform: translateY(-1px); }
.btn:active:not(:disabled) { transform: translateY(0); }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.btn-primario {
  background: var(--gradiente);
  border: none;
  color: #fff;
  box-shadow: 0 6px 20px rgba(124,92,255,.35);
}
.btn-primario:hover:not(:disabled) { box-shadow: 0 8px 26px rgba(124,92,255,.5); transform: translateY(-1px); }

.btn-grande { padding: 15px 26px; font-size: 1.02rem; }
.btn-ghost { background: transparent; border-color: var(--bordo); }
.btn-ghost:hover:not(:disabled) { background: var(--pannello); }
.btn-piccolo { padding: 7px 12px; font-size: .85rem; border-radius: var(--raggio-sm); }
.btn-pericolo:hover:not(:disabled) { border-color: var(--errore); color: var(--errore); }

/* ---- Card / pannelli ---------------------------------------------------- */
.card {
  background: var(--pannello);
  border: 1px solid var(--bordo);
  border-radius: var(--raggio-lg);
  padding: clamp(18px, 3vw, 28px);
  box-shadow: var(--ombra-soft);
}

/* ---- Selettore template ------------------------------------------------- */
.griglia-template {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
}
.template {
  text-align: left;
  background: var(--pannello);
  border: 1px solid var(--bordo);
  border-radius: var(--raggio);
  padding: 14px;
  cursor: pointer;
  transition: var(--transizione);
  display: flex; flex-direction: column; gap: 4px;
}
.template:hover { border-color: var(--bordo-chiaro); transform: translateY(-2px); }
.template.attivo { border-color: var(--accento); box-shadow: 0 0 0 3px rgba(124,92,255,.16); }
.template .icona { font-size: 1.5rem; }
.template .nome { font-weight: 700; font-size: .95rem; }
.template .descr { font-size: .78rem; color: var(--testo-soft); }

/* ---- Workspace: anteprima + editor ------------------------------------- */
.workspace {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 24px;
}
@media (min-width: 980px) {
  .workspace { grid-template-columns: 1fr 1fr; align-items: start; }
}

.riquadro {
  background: var(--pannello);
  border: 1px solid var(--bordo);
  border-radius: var(--raggio-lg);
  overflow: hidden;
  display: flex; flex-direction: column;
}
.riquadro-barra {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--bordo);
  background: var(--sfondo-2);
  min-height: 48px;
}
.riquadro-barra .titolino { font-weight: 700; font-size: .9rem; display: flex; align-items: center; gap: 8px; }
.riquadro-barra .spazio { margin-left: auto; }

/* Anteprima */
.anteprima-frame {
  width: 100%;
  height: 520px;
  border: 0;
  background: #fff;
}
@media (max-width: 979px) { .anteprima-frame { height: 380px; } }

/* Editor a tab */
.tab-editor { display: flex; gap: 2px; }
.tab-editor button {
  background: transparent; border: none; color: var(--testo-soft);
  padding: 6px 12px; border-radius: var(--raggio-sm);
  cursor: pointer; font-weight: 600; font-size: .85rem; font-family: var(--mono);
  transition: var(--transizione);
}
.tab-editor button:hover { color: var(--testo); }
.tab-editor button.attivo { color: var(--testo); background: var(--pannello-2); }

.editor-area { position: relative; }
.editor-area textarea {
  width: 100%; height: 520px;
  border: 0; border-radius: 0;
  background: #0d0d14;
  font-family: var(--mono); font-size: .85rem; line-height: 1.6;
  padding: 16px; resize: none; tab-size: 2;
  white-space: pre; overflow: auto;
}
.editor-area textarea:focus { box-shadow: none; }
.editor-codice {
  margin: 0; height: 520px; overflow: auto;
  background: #0d0d14;
  font-family: var(--mono); font-size: .85rem; line-height: 1.6;
}
.editor-codice code { padding: 16px; display: block; }
@media (max-width: 979px) {
  .editor-area textarea, .editor-codice { height: 360px; }
}

/* ---- Cronologia --------------------------------------------------------- */
.lista-cronologia { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.voce-cronologia {
  background: var(--pannello); border: 1px solid var(--bordo);
  border-radius: var(--raggio); padding: 16px;
  display: flex; flex-direction: column; gap: 8px;
  transition: var(--transizione);
}
.voce-cronologia:hover { border-color: var(--bordo-chiaro); }
.voce-cronologia .nome { font-weight: 700; }
.voce-cronologia .descr { font-size: .85rem; color: var(--testo-soft);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.voce-cronologia .data { font-size: .75rem; color: var(--testo-debole); }
.voce-cronologia .azioni { display: flex; gap: 8px; margin-top: 4px; }

/* ---- Impostazioni ------------------------------------------------------- */
.campo { margin-bottom: 20px; }
.campo .aiuto { font-size: .8rem; color: var(--testo-debole); margin-top: 6px; }
.griglia-provider { display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.provider-radio {
  display: flex; gap: 10px; align-items: flex-start;
  border: 1px solid var(--bordo); border-radius: var(--raggio);
  padding: 14px; cursor: pointer; transition: var(--transizione);
  background: var(--pannello);
}
.provider-radio:hover { border-color: var(--bordo-chiaro); }
.provider-radio.attivo { border-color: var(--accento); box-shadow: 0 0 0 3px rgba(124,92,255,.16); }
.provider-radio input { width: auto; margin-top: 3px; accent-color: var(--accento); }
.provider-radio .p-nome { font-weight: 700; font-size: .92rem; }
.provider-radio .p-desc { font-size: .78rem; color: var(--testo-soft); }

/* ---- Banner / avvisi ---------------------------------------------------- */
.avviso {
  display: flex; gap: 12px; align-items: flex-start;
  border-radius: var(--raggio); padding: 13px 16px;
  font-size: .9rem; border: 1px solid var(--bordo);
  background: var(--pannello);
}
.avviso .icona { flex-shrink: 0; font-size: 1.1rem; line-height: 1.4; }
.avviso-info { border-color: rgba(77,124,255,.4); background: rgba(77,124,255,.1); }
.avviso-errore { border-color: rgba(255,92,108,.45); background: rgba(255,92,108,.12); color: #ffd5d9; }
.avviso-ok { border-color: rgba(46,204,113,.4); background: rgba(46,204,113,.1); }
.avviso-privacy {
  border-color: rgba(46,204,113,.35); background: rgba(46,204,113,.08);
  font-size: .84rem; color: var(--testo-soft);
}
/* Avviso di trasparenza sull'uso dell'IA (AI Act, art. 50). */
.avviso-ia {
  border-color: rgba(255,176,32,.35); background: rgba(255,176,32,.08);
  font-size: .84rem; color: var(--testo-soft);
}

/* ---- Modale (onboarding / guide) --------------------------------------- */
.overlay {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(5,5,9,.7); backdrop-filter: blur(4px);
  display: grid; place-items: center; padding: 20px;
}
.modale {
  width: min(560px, 100%);
  max-height: 90vh; overflow: auto;
  background: var(--pannello); border: 1px solid var(--bordo-chiaro);
  border-radius: var(--raggio-lg); padding: clamp(22px, 4vw, 34px);
  box-shadow: var(--ombra);
  animation: comparsa .2s ease;
}
@keyframes comparsa { from { opacity: 0; transform: translateY(10px) scale(.98); } to { opacity: 1; transform: none; } }
.modale h2 { font-size: 1.5rem; letter-spacing: -.02em; margin-bottom: 6px; }
.modale .passi { display: grid; gap: 14px; margin: 22px 0; }
.passo { display: flex; gap: 14px; align-items: flex-start; }
.passo .num {
  flex-shrink: 0; width: 30px; height: 30px; border-radius: 50%;
  background: var(--gradiente); color: #fff; font-weight: 800;
  display: grid; place-items: center; font-size: .9rem;
}
.passo .testo { font-size: .94rem; }
.passo .testo strong { color: var(--testo); }

/* ---- Spinner / caricamento --------------------------------------------- */
.spinner {
  width: 18px; height: 18px; border-radius: 50%;
  border: 2.5px solid rgba(255,255,255,.3); border-top-color: #fff;
  animation: gira .7s linear infinite;
}
@keyframes gira { to { transform: rotate(360deg); } }

.caricamento-box {
  display: flex; flex-direction: column; align-items: center; gap: 16px;
  padding: 60px 20px; color: var(--testo-soft); text-align: center;
}
.caricamento-box .spinner { width: 34px; height: 34px; border-width: 3px;
  border-color: rgba(124,92,255,.25); border-top-color: var(--accento); }

/* ---- Stato vuoto -------------------------------------------------------- */
.vuoto { text-align: center; padding: 60px 20px; color: var(--testo-soft); }
.vuoto .emoji { font-size: 2.6rem; margin-bottom: 12px; }

/* ---- Utility ------------------------------------------------------------ */
.riga { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.riga-fine { justify-content: flex-end; }
.colonna { display: flex; flex-direction: column; gap: 12px; }
.spazia { margin-top: 24px; }
.spazia-sm { margin-top: 12px; }
.testo-soft { color: var(--testo-soft); }
.testo-debole { color: var(--testo-debole); font-size: .85rem; }
.pieno { width: 100%; }
.nascosto { display: none !important; }
.chip { font-size: .72rem; font-weight: 700; padding: 3px 9px; border-radius: 999px;
  background: var(--pannello-2); border: 1px solid var(--bordo); color: var(--testo-soft); }

/* ---- Schermata Esempi --------------------------------------------------- */
/* a) Card "Come usare AppToApp" */
.esempi-intro {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin-top: 18px;
}
.card-uso {
  background: var(--pannello);
  border: 1px solid var(--bordo);
  border-radius: var(--raggio-lg);
  padding: 20px;
  display: flex; flex-direction: column; gap: 10px;
}
.card-uso .titoletto { font-weight: 700; font-size: 1.05rem; display: flex; align-items: center; gap: 8px; }
.card-uso .descr-uso { font-size: .9rem; color: var(--testo-soft); flex: 1; }
.card-uso code { font-family: var(--mono); font-size: .82em;
  background: var(--pannello-2); padding: 1px 5px; border-radius: 5px; }

/* Accordion "Mostra passi" */
.accordion-toggle {
  align-self: flex-start;
  background: transparent; border: 1px solid var(--bordo);
  color: var(--accento-soft); font-weight: 600; font-size: .82rem;
  padding: 6px 12px; border-radius: var(--raggio-sm); cursor: pointer;
  transition: var(--transizione);
}
.accordion-toggle:hover { background: var(--pannello-2); border-color: var(--bordo-chiaro); }
.accordion-corpo {
  font-size: .88rem; color: var(--testo-soft);
  border-left: 2px solid var(--bordo-chiaro); padding-left: 14px; margin-top: 2px;
}
.accordion-corpo ol { margin: 0; padding-left: 18px; display: grid; gap: 6px; }
.accordion-corpo strong { color: var(--testo); }

/* b) Filtri categoria (tab a pillola) */
.filtri-categoria { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0 22px; }
.filtri-categoria button {
  background: var(--pannello); border: 1px solid var(--bordo);
  color: var(--testo-soft); padding: 8px 14px; border-radius: 999px;
  cursor: pointer; font-weight: 600; font-size: .85rem;
  transition: var(--transizione); display: inline-flex; align-items: center; gap: 6px;
}
.filtri-categoria button:hover { color: var(--testo); border-color: var(--bordo-chiaro); }
.filtri-categoria button.attivo { color: #fff; background: var(--gradiente); border-color: transparent;
  box-shadow: 0 4px 14px rgba(124,92,255,.35); }

/* Griglia esempi: 3 colonne desktop · 2 tablet · 1 mobile */
.griglia-esempi { display: grid; gap: 16px; grid-template-columns: repeat(3, 1fr); }
@media (max-width: 900px) { .griglia-esempi { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 580px) { .griglia-esempi { grid-template-columns: 1fr; } }

.card-esempio {
  background: var(--pannello); border: 1px solid var(--bordo);
  border-radius: var(--raggio-lg); padding: 18px;
  display: flex; flex-direction: column; gap: 12px;
  transition: var(--transizione);
}
.card-esempio:hover { border-color: var(--bordo-chiaro); transform: translateY(-2px); box-shadow: var(--ombra-soft); }
.card-esempio .intestazione { display: flex; align-items: center; gap: 12px; }
.card-esempio .num-cerchio {
  flex-shrink: 0; width: 34px; height: 34px; border-radius: 50%;
  background: var(--gradiente); color: #fff; font-weight: 800; font-size: .9rem;
  display: grid; place-items: center; box-shadow: 0 4px 14px rgba(124,92,255,.35);
}
.card-esempio .titolo-esempio { font-weight: 700; font-size: .98rem; line-height: 1.25; }
.card-esempio .preview-prompt { font-size: .85rem; color: var(--testo-soft); line-height: 1.5; flex: 1; }
.card-esempio .btn { width: 100%; }

/* c) FAQ accordion */
.faq-lista { display: grid; gap: 10px; margin-top: 18px; max-width: 760px; }
.faq-item { border: 1px solid var(--bordo); border-radius: var(--raggio);
  background: var(--pannello); overflow: hidden; }
.faq-domanda {
  width: 100%; text-align: left; background: transparent; border: none;
  color: var(--testo); font-weight: 600; font-size: .95rem;
  padding: 15px 18px; cursor: pointer;
  display: flex; justify-content: space-between; gap: 12px; align-items: center;
  transition: var(--transizione);
}
.faq-domanda:hover { background: var(--pannello-2); }
.faq-domanda .freccia { transition: var(--transizione); color: var(--testo-debole); }
.faq-domanda.aperta .freccia { transform: rotate(180deg); }
.faq-risposta { padding: 0 18px 16px; font-size: .9rem; color: var(--testo-soft); white-space: pre-line; }

/* Flash di evidenziazione della textarea quando si precompila un prompt */
@keyframes flashEvidenzia {
  0%, 100% { box-shadow: 0 0 0 0 rgba(124,92,255,0); border-color: var(--bordo); }
  30%      { box-shadow: 0 0 0 4px rgba(124,92,255,.45); border-color: var(--accento); }
}
.flash-evidenzia { animation: flashEvidenzia 1.4s ease; }

/* ---- Footer ------------------------------------------------------------- */
.pie {
  text-align: center; padding: 24px; color: var(--testo-debole); font-size: .82rem;
  border-top: 1px solid var(--bordo);
}
.pie p { margin: 0; }
/* Nota di trasparenza sull'uso dell'IA (AI Act, art. 50). */
.pie-nota {
  max-width: 760px; margin: 14px auto 0 !important; padding-top: 14px;
  border-top: 1px solid var(--bordo);
  font-size: .76rem; line-height: 1.55; text-align: left; opacity: .85;
}