/* Mobile Styles - 480px and below */

@media (max-width: 480px) {
  .main-layout {
    padding: 0 var(--space-4);
    display: flex;
    flex-direction: column;
  }

  .logo {
    width: 48px;
    height: 48px;
  }

  /* Keep utility icons at the top-right */
  .header-right {
    order: -1;
    align-self: flex-end;
    margin-bottom: var(--space-2);
    position: relative;
    z-index: var(--z-profile-icons);
  }

  .header-divider {
    margin: var(--space-5) 0;
  }

  /* Present utility icons in a clean row on mobile */
  #utility-icons {
    display: flex;
    gap: var(--space-2);
  }

  .utility-icon {
    margin-right: 0; /* prevent overlap on small screens */
  }

  .social-links-column {
    padding: var(--space-1-5) 0;
    margin-bottom: 0;
    margin-top: var(--space-3);
    order: 99; /* push to bottom on mobile */
    border-bottom: 0; /* override tablet rule */
    border-top: 1px solid var(--neutral-200);
  }

  .content-area {
    gap: var(--space-3);
    margin-top: var(--space-2-5);
  }

  /* Sidebar is an off-canvas panel by default */
  .sidebar {
    display: flex;
    flex-direction: column;
    justify-content: start; /* center nav vertically */
    align-items: start;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    height: 100vh;
    background: var(--color-white);
    z-index: 1500;
    padding: var(--space-5) var(--space-4);
    overflow-y: auto;
    border: none;
    transform: translateX(-100%);
  }

  /* Slide in when open */
  .sidebar.open {
    transform: translateX(0);
    transition: transform 0.3s ease; /* animate only on open */
  }

  .main-header {
    padding: var(--space-4) 0 var(--space-2) 0;
  }

  h1 {
    font-size: clamp(1.9rem, 6vw, var(--font-size-heading-lg));
    line-height: 1.15;
    letter-spacing: -0.01em;
  }

  h2 {
    font-size: var(--font-size-heading-md);
    line-height: 1.25;
  }

  .header-content {
    margin: 0;
  }
  .header-title {
    font-size: 1.5rem;
  }

  .profile-icons {
    gap: var(--space-2);
    z-index: var(--z-profile-icons);
  }

  /* Keep the menu button visible above the overlay */
  .mobile-menu-btn {
    position: absolute; /* not fixed on mobile */
    left: var(--space-4);
    top: var(--space-4);
    z-index: 2001;
  }

  /* Mobile menu: vertical list with larger targets */
  .sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    width: 100%;
    max-width: 480px;
    margin: 54px auto 0;
    text-align: left;
  }

  .nav-item {
    font-size: 20px; /* larger text */
    padding: var(--space-4);
    width: 100%;
    border-radius: 10px;
    justify-content: start; /* center icon + label */
  }

  .nav-item .material-symbols-outlined {
    width: 24px;
    font-size: 22px;
  }

  .profile-icon {
    width: 32px;
    height: 32px;
    font-size: var(--font-size-xs);
    margin-right: calc(-1 * var(--space-4));
  }

  /* Show profile icon tooltips below the icon on mobile */
  .profile-icon::before {
    bottom: auto;
    top: 100%;
    margin-top: var(--space-2);
    margin-bottom: 0;
    transform: translateX(-50%);
  }

  /* Show utility icon tooltips below the icon on mobile */
  .utility-icon::before {
    bottom: auto;
    top: 100%;
    margin-top: var(--space-2);
    margin-bottom: 0;
    transform: translateX(-50%);
    left: 50%;
    right: auto;
  }

  .content-filters {
    flex-direction: row;
    align-items: center;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: var(--space-1);
    margin: 0 calc(-1 * var(--space-1));
    scrollbar-width: none;
    gap: var(--space-3);
    -webkit-overflow-scrolling: touch;
  }

  .content-filters::-webkit-scrollbar {
    display: none;
  }

  .filter-btn {
    flex: 0 0 auto;
    width: auto;
    min-width: unset;
  }

  .content-block h2 {
    font-size: clamp(1.9rem, 6vw, var(--font-size-heading-lg));
  }

  .cta-section {
    padding: var(--space-6) var(--space-6);
  }
}