/* ==========================================================================
   VARIABILI DI TEMA (CUSTOM PROPERTIES)
   ========================================================================== */

/* Tema Scuro (Default di sistema / Browser se preferito) */
:root[data-theme="dark"] {
  --bg-color: #0d0f12;
  --container-bg: #16191f;
  --card-bg: #1e232b;
  --accent-color: #00e5ff;
  --accent-hover: #00b6cc;
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --border-color: #2a323d;
  --disclaimer-bg: rgba(239, 68, 68, 0.1);
  --disclaimer-border: rgba(239, 68, 68, 0.3);
  --disclaimer-text: #fca5a5;
  --header-blur-bg: rgba(22, 25, 31, 0.75);
  --overlay-bg: rgba(0, 0, 0, 0.6);
}

/* Tema Chiaro (Attivabile manualmente o via browser) */
:root[data-theme="light"] {
  --bg-color: #f4f6f9;
  --container-bg: #ffffff;
  --card-bg: #f8fafc;
  --accent-color: #008fa3;
  --accent-hover: #006675;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --disclaimer-bg: #fef2f2;
  --disclaimer-border: #fca5a5;
  --disclaimer-text: #991b1b;
  --header-blur-bg: rgba(255, 255, 255, 0.75);
  --overlay-bg: rgba(0, 0, 0, 0.3);
}

/* ==========================================================================
   RESET E REGOLE BASE
   ========================================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Blocca lo scorrimento della pagina di sfondo se l'off-canvas è aperto */
body.offcanvas-open {
  overflow: hidden;
}

.container {
  max-width: 1000px;
  margin: 20px auto;
  padding: 0 20px;
}

/* ==========================================================================
   HEADER & NAVBAR (FROSTED ICE EFFECT)
   ========================================================================== */
.header-nav {
  background-color: var(--header-blur-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 15px 0;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-main);
  text-decoration: none;
  letter-spacing: -0.5px;
}

html[data-theme="dark"] .brand { 
  color: #fff; 
}

.brand span {
  color: var(--accent-color);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Pulsante "🌐 The Network" */
.network-trigger-btn {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 7px 14px;
  border-radius: 20px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
}

.network-trigger-btn:hover {
  border-color: var(--accent-color);
  background-color: rgba(0, 229, 255, 0.05);
}

/* Pulsante Selettore Tema */
.theme-switch-btn {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 7px 14px;
  border-radius: 20px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  transition: all 0.2s ease;
}

.theme-switch-btn:hover {
  border-color: var(--accent-color);
  color: var(--text-main);
}

/* ==========================================================================
   LANGUAGE SELECTOR DROPDOWN
   ========================================================================== */
.lang-switch-wrapper {
  position: relative;
}

.lang-switch-btn {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 7px 12px;
  border-radius: 20px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: all 0.2s ease;
  min-width: 60px;
  justify-content: center;
}

.lang-switch-btn:hover {
  border-color: var(--accent-color);
  background-color: rgba(0, 229, 255, 0.05);
  color: var(--accent-color);
}

.lang-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  background-color: var(--container-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-top: 8px;
  min-width: 180px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
  z-index: 1001;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-5px);
  transition: all 0.2s ease;
  overflow: hidden;
}

html[data-theme="dark"] .lang-dropdown {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.lang-dropdown.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-option {
  display: block;
  width: 100%;
  padding: 12px 16px;
  background: none;
  border: none;
  color: var(--text-main);
  text-align: left;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.15s ease;
  border-bottom: 1px solid var(--border-color);
}

.lang-option:last-child {
  border-bottom: none;
}

.lang-option:hover {
  background-color: var(--card-bg);
  color: var(--accent-color);
  padding-left: 20px;
}

.lang-option.active {
  background-color: rgba(0, 229, 255, 0.1);
  color: var(--accent-color);
  font-weight: 600;
}

/* ==========================================================================
   OFF-CANVAS MENU SYSTEM (PREMIUM MODERNO)
   ========================================================================== */
.offcanvas-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--overlay-bg);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.offcanvas-overlay.active {
  opacity: 1;
  visibility: visible;
}

.offcanvas-menu {
  position: fixed;
  top: 0;
  right: -320px; /* Nascosto fuori dallo schermo a destra */
  width: 320px;
  height: 100%;
  background-color: var(--header-blur-bg);
  backdrop-filter: blur(25px); /* Effetto satinato più profondo */
  -webkit-backdrop-filter: blur(25px);
  border-left: 1px solid var(--border-color);
  z-index: 999;
  padding: 35px;
  display: flex;
  flex-direction: column;
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.25);
  transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1); /* Curva di transizione fluidissima */
}

.offcanvas-menu.active {
  right: 0; /* Entrata in scivolamento */
}

.offcanvas-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 15px;
}

.offcanvas-header h3 {
  font-size: 1.25rem;
  color: var(--text-main);
  font-weight: 700;
  letter-spacing: -0.3px;
}

.offcanvas-close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
  transition: color 0.2s ease, transform 0.2s ease;
}

.offcanvas-close-btn:hover {
  color: #ef4444;
  transform: scale(1.1);
}

.offcanvas-nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.offcanvas-nav a {
  color: var(--text-main);
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 500;
  display: block;
  padding: 6px 0;
  transition: all 0.25s ease;
}

.offcanvas-nav a:hover {
  color: var(--accent-color);
  padding-left: 6px; /* Feedback visivo moderno all'hover */
}

/* ==========================================================================
   LAYOUT DEL CONTENUTO E TIPOGRAFIA
   ========================================================================== */
main {
  margin-top: 40px;
  margin-bottom: 40px;
}

.license-wrapper {
  background-color: var(--container-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 40px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

html[data-theme="dark"] .license-wrapper {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.hero-img-container {
  text-align: center;
  margin-bottom: 35px;
}

.hero-img-container img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.page-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 20px;
  margin-bottom: 30px;
}

.page-header h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-main);
}

html[data-theme="dark"] .page-header h1 { 
  color: #fff; 
}

.subtitle {
  color: var(--accent-color);
  font-size: 0.95rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 5px;
}

h2 {
  font-size: 1.35rem;
  color: var(--text-main);
  margin: 35px 0 15px 0;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}

h2::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 18px;
  background-color: var(--accent-color);
  border-radius: 2px;
}

p {
  margin-bottom: 15px;
  color: var(--text-main);
  font-size: 1rem;
}

/* Elenchi di Definizioni Legali */
dl.definitions dt {
  font-weight: 600;
  color: var(--accent-color);
  margin-top: 20px;
}

dl.definitions dd {
  margin-left: 0;
  margin-bottom: 15px;
  color: var(--text-muted);
  padding-left: 15px;
  border-left: 2px solid var(--border-color);
}

/* Sotto-liste con freccia */
.sub-list {
  list-style: none;
  margin: 12px 0 15px 20px;
}

.sub-list li {
  position: relative;
  margin-bottom: 8px;
  color: var(--text-muted);
  padding-left: 20px;
}

.sub-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent-color);
}

/* Box Contenitori delle Licenze (Section A & B) */
.license-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 25px;
  margin-bottom: 20px;
}

.license-card h3 {
  color: var(--text-main);
  font-size: 1.1rem;
  margin-bottom: 12px;
  font-weight: 600;
}

html[data-theme="dark"] .license-card h3 { 
  color: #fff; 
}

/* Box Disclaimer di Responsabilità (Stile Alert) */
.disclaimer-box {
  background-color: var(--disclaimer-bg);
  border: 1px solid var(--disclaimer-border);
  border-radius: 8px;
  padding: 25px;
  margin-top: 25px;
  margin-bottom: 25px;
}

.disclaimer-box h3 {
  color: #ef4444;
  margin-bottom: 10px;
  font-size: 1.1rem;
}

html[data-theme="light"] .disclaimer-box h3 { 
  color: #b91c1c; 
}

.disclaimer-box p {
  color: var(--disclaimer-text);
  font-size: 0.95rem;
  font-family: monospace;
}

a.mail-link {
  color: var(--accent-color);
  text-decoration: none;
  border-bottom: 1px dashed var(--accent-color);
  transition: all 0.2s ease;
}

a.mail-link:hover {
  color: var(--text-main);
  border-bottom-style: solid;
}
#langFlag img,
.lang-option img {
    vertical-align: middle;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
footer {
  border-top: 1px solid var(--border-color);
  padding: 30px 0;
  background-color: var(--container-bg);
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.back-to-top {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.back-to-top:hover {
  color: var(--accent-color);
}

/* ==========================================================================
   RESPONSIVE DESIGN (BREAKPOINT SMARTPHONE / TABLET)
   ========================================================================== */
@media (max-width: 768px) {
  .header-nav {
    padding: 12px 0;
  }

  .nav-container {
    flex-direction: column;
    align-items: center;
    gap: 10px;
  }

  .brand {
    text-align: center;
  }

  .nav-right {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
    align-items: center;
  }

  .network-trigger-btn,
  .lang-switch-btn,
  .theme-switch-btn {
    width: 100%;
    justify-content: center;
    padding: 8px 10px;
    font-size: 0.8rem;
  }

  .lang-switch-wrapper,
  .theme-switch-wrapper {
    width: 100%;
  }

  .lang-dropdown {
    left: 0;
    right: auto;
    min-width: min(92vw, 220px);
    transform: translate(0, -5px);
  }

  .lang-dropdown.active {
    transform: translate(0, 0);
  }

  /* Adatta l'Off-Canvas alla larghezza degli schermi più piccoli */
  .offcanvas-menu {
    width: 280px;
    right: -280px;
    padding: 25px 20px;
  }

  main {
    margin-top: 20px;
    margin-bottom: 20px;
  }

  .license-wrapper {
    padding: 20px;
  }

  .license-card {
    padding: 15px;
    margin-bottom: 12px;
  }

  .page-header h1 {
    font-size: 1.6rem;
  }

  .footer-inner {
    flex-direction: column;
    gap: 15px;
    text-align: center;
  }
}