/* ============================================================
   mobile-nav.css — sidebar drawer + hamburger + topbar
   Owner: teammate "mobile-nav"
   Breakpoint: tablet ≤1024px, mobile ≤640px
   Vincolo: solo override dentro media query, mai regole desktop
   ============================================================ */

/* ──────────────────────────────────────────────────────────────
   TABLET — ≤ 1024px
   Estende il drawer off-canvas già definito in index.html (≤900px)
   fino a 1024px e uniforma transition a 200ms ease.
   ────────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  /* Hamburger visibile come trigger drawer */
  .btn-hamburger {
    display: flex;
  }

  /* Toggle desktop (collapse sidebar) non ha senso in modalità drawer */
  .btn-sidebar-toggle {
    display: none;
  }

  /* Sidebar off-canvas */
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transform: translateX(-100%);
    transition: transform 200ms ease;
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.25);
  }
  .sidebar-open .sidebar {
    transform: translateX(0);
  }

  /* Backdrop overlay */
  .sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
  }
  .sidebar-open .sidebar-overlay {
    display: block;
  }

  /* Topbar leggermente più compatta */
  .topbar {
    padding: 0 16px;
    gap: 12px;
  }
}

/* ──────────────────────────────────────────────────────────────
   MOBILE — ≤ 640px
   Touch target ≥44px, sidebar full-width capped, topbar ridotta.
   ────────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  /* Hamburger ≥44px per touch target */
  .btn-hamburger {
    width: 44px;
    height: 44px;
    padding: 8px;
  }
  .btn-hamburger svg {
    width: 20px;
    height: 20px;
  }

  /* Sidebar drawer adattato a schermo piccolo */
  .sidebar {
    width: 84%;
    max-width: 300px;
  }

  /* Topbar mobile */
  .topbar {
    padding: 0 12px;
    gap: 8px;
    height: 56px;
  }
  .topbar-title {
    font-size: 14px;
  }

  /* CTA topbar icon-only su iPhone (issue #2) */
  .btn-topbar-cta .cta-label {
    display: none;
  }
  .btn-topbar-cta {
    min-width: 44px;
    min-height: 44px;
    padding: 0;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }
  .btn-topbar-cta svg {
    width: 22px;
    height: 22px;
  }

  /* Hide theme-toggle su smartphone (Bug 2 — topbar saturazione)
     Su ≤640px non c'è spazio per theme-toggle (3 elementi: luna+track+sole)
     senza tagliare contenuti. Smartphone resta in tema light di default
     (localStorage). Desktop/tablet >640px invariati: theme-toggle resta
     visibile e funzionale. */
  .theme-toggle {
    display: none !important;
  }
}