/* ====================================================
   Mechanical Engineering Career OS - Mobile Stylesheet
   Mobile First Responsive Layouts & Touch Targets
   ==================================================== */

/* Global Display Helper Classes */
.mobile-only, .mobile-only-inline {
  display: none !important;
}

.desktop-only {
  display: inline-flex;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  z-index: 250;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.sidebar-overlay.active {
  display: block;
  opacity: 1;
  pointer-events: auto;
}

@media (max-width: 1024px) {
  #sidebar {
    width: 240px;
  }
  #main-content {
    margin-left: 240px;
  }
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .mobile-only {
    display: flex !important;
  }

  .mobile-only-inline {
    display: inline-flex !important;
  }

  .desktop-only {
    display: none !important;
  }

  #sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    width: 280px;
    z-index: 300;
    box-shadow: 10px 0 30px rgba(0, 0, 0, 0.5);
  }

  #sidebar.open {
    transform: translateX(0);
  }

  #main-content {
    margin-left: 0;
  }

  #top-header {
    padding: 0 16px;
    gap: 8px;
  }

  .header-left {
    flex: 1;
    min-width: 0;
  }

  .search-box {
    width: 100%;
    max-width: 280px;
  }

  .search-input {
    font-size: 0.8rem;
    padding-left: 36px;
  }

  .search-icon-fixed {
    left: 10px;
  }

  .view-container {
    padding: 16px;
  }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

  /* Minimum Touch Target Sizes for Touch Devices */
  .btn, .nav-link, .btn-icon, .form-input, .form-select {
    min-height: 44px;
  }

  .hero-title {
    font-size: 1.4rem;
  }

  .stat-value {
    font-size: 1.5rem;
  }
}