.burger-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0.45rem;
  color: var(--text-main);
  outline: none;
  -webkit-tap-highlight-color: transparent;
  transition: all 0.2s ease;
}

.burger-btn:hover,
.burger-btn:focus {
  background-color: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
}

@media (min-width: 768px) {
  .burger-btn {
    display: none;
  }
}

.mobile-menu-drawer {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  z-index: 50;
  background-color: #ffffff;
  border-bottom: 1px solid var(--border-color);
  padding: 1.25rem 1rem 1.75rem;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
  animation: fadeIn 0.2s ease;
}

.mobile-menu-drawer.show {
  display: block;
}

@media (min-width: 768px) {
  .mobile-menu-drawer {
    display: none !important;
  }
}

.mobile-accordion {
  border-bottom: 1px solid var(--border-color);
}

.mobile-accordion:last-child {
  border-bottom: none;
}

.mobile-accordion-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: none;
  border: none;
  padding: 1.15rem 0.5rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  outline: none;
  -webkit-tap-highlight-color: transparent;
}

.accordion-icon {
  transition: transform 0.3s ease;
  color: var(--text-muted);
}

.mobile-accordion.active .accordion-icon {
  transform: rotate(180deg);
  color: var(--primary);
}

.mobile-accordion-content {
  display: none;
  padding-bottom: 0.75rem;
}

.mobile-accordion.active .mobile-accordion-content {
  display: block;
  animation: fadeIn 0.2s ease;
}

.mobile-link {
  display: block;
  padding: 0.65rem 0.75rem;
  color: var(--text-main);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: background-color 0.15s ease, color 0.15s ease;
}

.mobile-link:hover {
  background-color: var(--primary-light);
  color: var(--primary);
}

.mobile-divider {
  height: 1px;
  background-color: var(--border-color);
  margin: 1rem 0;
  border: none;
}

@media (max-width: 767px) {
  .nav-desktop {
    display: none;
  }

  .header-container {
    padding: 0.75rem 1rem;
  }

  .main-content {
    padding: 1.5rem 1rem 2.5rem;
    gap: 1.75rem;
  }

  .hero-column {
    text-align: center;
    position: relative;
  }

  .hero-title {
    font-size: 1.55rem;
    line-height: 1.25;
    margin-bottom: 0.25rem;
    padding-bottom: 0;
    border-bottom: none;
    text-align: center;
    display: inline-block;
  }

  .hero-info-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    margin-left: 6px;
    border-radius: 50%;
    background-color: var(--primary-light);
    color: var(--primary);
    border: 1px solid rgba(37, 99, 235, 0.35);
    vertical-align: middle;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
    position: relative;
    top: -2px;
    -webkit-tap-highlight-color: transparent;
  }

  .hero-info-btn:hover,
  .hero-info-btn.active {
    background-color: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    transform: scale(1.1);
  }

  .hero-info-popover {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    width: 92%;
    max-width: 320px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: 0 12px 25px -5px rgba(0, 0, 0, 0.18), 0 4px 10px rgba(0, 0, 0, 0.05);
    padding: 0.85rem 1rem;
    z-index: 70;
    text-align: left;
  }

  .hero-info-popover.show {
    display: block;
    animation: popoverFadeIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .popover-arrow {
    position: absolute;
    top: -6px;
    left: 70%;
    transform: translateX(-50%) rotate(45deg);
    width: 10px;
    height: 10px;
    background: #ffffff;
    border-left: 1px solid var(--border-color);
    border-top: 1px solid var(--border-color);
  }

  .popover-close-btn {
    position: absolute;
    top: 0.45rem;
    right: 0.45rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-light);
    padding: 0.25rem;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
  }

  .popover-close-btn:hover {
    color: var(--text-main);
    background-color: #f1f5f9;
  }

  .popover-content p {
    margin: 0;
    padding-right: 1.25rem;
    color: var(--text-muted);
    font-size: 0.86rem;
    line-height: 1.5;
  }

  @keyframes popoverFadeIn {
    from {
      opacity: 0;
      transform: translateX(-50%) translateY(4px);
    }
    to {
      opacity: 1;
      transform: translateX(-50%) translateY(0);
    }
  }

  .hero-description {
    display: none !important;
  }

  .app-card {
    min-height: auto;
    border-radius: var(--radius-lg);
  }

  .card-body {
    padding: 1rem;
  }

  .drop-zone {
    min-height: 270px;
    padding: 2rem 1rem;
    border-radius: var(--radius-md);
  }

  .drop-zone-icon {
    width: 54px;
    height: 54px;
    margin-bottom: 0.85rem;
  }

  .drop-title {
    font-size: 1.05rem;
  }

  .drop-subtitle {
    font-size: 0.82rem;
    margin-top: 0.4rem;
  }

  .state-container {
    min-height: 270px;
  }

  .modal-backdrop {
    padding: 0.75rem;
  }

  .modal-dialog {
    padding: 1.5rem 1.15rem 1.15rem;
    border-radius: var(--radius-lg);
    max-height: calc(100vh - 1.5rem);
    overflow-y: auto;
  }

  .modal-dialog h2 {
    font-size: 1.25rem !important;
  }

  .steps-grid {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1.15rem;
  }

  .step-card {
    display: flex;
    align-items: center;
    text-align: left;
    gap: 0.85rem;
    padding: 0.85rem 1rem;
    border-radius: var(--radius-md);
  }

  .step-num {
    font-size: 1.25rem;
    margin-bottom: 0;
    min-width: 20px;
    font-weight: 800;
  }

  .step-icon-wrapper {
    width: 40px;
    height: 40px;
    min-width: 40px;
    margin: 0;
  }

  .step-content {
    flex: 1;
  }

  .step-title {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 0.15rem;
  }

  .step-desc {
    font-size: 0.82rem;
    line-height: 1.35;
  }
}