/* ==========================================================================
   FINANCASINTELIGENTES.COM.BR - Responsive Media Queries
   ========================================================================== */

/* Mobile Hamburger Menu Button */
.mobile-nav-toggle {
  display: none;
  font-size: 1.5rem;
  color: var(--text-main);
  background: none;
  border: none;
  padding: 0.5rem;
}

@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .calculator-card {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
  }

  .header-container {
    height: 70px;
  }

  .mobile-nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    font-size: 1.3rem;
    color: var(--text-main);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast), 
                border-color var(--transition-fast), 
                color var(--transition-fast),
                transform var(--transition-fast);
  }

  .mobile-nav-toggle:hover {
    border-color: var(--primary);
  }

  .mobile-nav-toggle:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
  }

  .mobile-nav-toggle.active {
    color: var(--primary);
    border-color: var(--primary);
    background: rgba(16, 185, 129, 0.1);
  }

  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    max-height: calc(100vh - 70px);
    overflow-y: auto;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 1.75rem 1.5rem;
    gap: 1.25rem;
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
                opacity 0.35s ease,
                visibility 0.35s ease;
    box-shadow: var(--shadow-lg);
    z-index: 999;
  }

  .nav-menu.mobile-active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .products-grid {
    grid-template-columns: 1fr;
  }

  .articles-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero-section {
    padding: 2.5rem 0 2rem;
  }
}