@layer modules {

  .mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    height: var(--header-height);
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-4);
    box-shadow: var(--shadow-sm);
  }

  .mobile-nav__brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
  }

  .mobile-nav__brand-img {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    object-fit: cover;
    box-shadow:
      0 0 0 1px oklch(var(--lch-ink-darkest) / 0.08),
      0 2px 8px -2px oklch(var(--lch-ink-darkest) / 0.15);
  }

  .mobile-nav__hamburger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    border-radius: var(--radius-md);
    color: var(--color-ink-dark);
    cursor: pointer;
    transition: background-color var(--transition-base), color var(--transition-base);
  }

  @media (any-hover: hover) {
    .mobile-nav__hamburger:hover {
      background-color: var(--color-ink-lightest);
      color: var(--color-ink-darkest);
    }
  }

  .mobile-nav__hamburger svg {
    width: 22px;
    height: 22px;
    stroke: currentColor;
  }

  .side-nav__overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: calc(var(--z-sticky) - 1);
    background-color: rgb(0 0 0 / 0.45);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-slow);
  }

  .filter-panel-overlay {
    display: none;
    position: fixed;
    inset: 0;
    top: var(--header-height);
    z-index: calc(var(--z-dropdown) - 1);
    background-color: rgb(0 0 0 / 0.4);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-slow);
  }

  .filter-panel-overlay--visible {
    opacity: 1;
    pointer-events: auto;
  }

  @media (max-width: 1023px) {
    .mobile-nav {
      display: flex;
    }

    .side-nav__overlay {
      display: block;
    }

    .side-nav__overlay--visible {
      opacity: 1;
      pointer-events: auto;
    }

    .side-nav {
      transform: translateX(-100%);
      transition: transform var(--transition-slow);
      z-index: var(--z-sticky);
    }

    .side-nav--open {
      transform: translateX(0);
      box-shadow: var(--shadow-lg), 4px 0 24px rgb(0 0 0 / 0.12);
    }

    .app-shell {
      margin-left: 0;
    }

    .app-shell > main {
      padding-top: var(--header-height);
    }

    body.nav-open {
      overflow: hidden;
    }

    .main-content {
      padding: var(--space-6) var(--space-4);
    }

    .container {
      padding-inline: var(--space-4);
    }

    .page-header {
      flex-direction: column;
      align-items: flex-start;
      gap: var(--space-3);
      margin-bottom: var(--space-6);
      padding-bottom: var(--space-4);
    }

    .page-header__actions {
      width: 100%;
      justify-content: flex-start;
    }

    .content-grid {
      flex-direction: column;
    }

    .content-grid__sidebar {
      width: 100%;
    }

    .stat-grid > .stat-card {
      flex: 1 1 calc(50% - var(--space-4));
    }

    .auth-layout__card {
      padding: var(--space-6) var(--space-6);
    }

    .companies-layout {
      flex-direction: column;
    }

    .filter-panel-overlay {
      display: block;
    }

    .filter-panel {
      position: fixed;
      top: var(--header-height);
      right: 0;
      bottom: 0;
      width: min(320px, 90vw);
      height: auto;
      z-index: var(--z-dropdown);
      border-radius: var(--radius-xl) 0 0 var(--radius-xl);
      border-right: none;
      box-shadow: -4px 0 24px rgb(0 0 0 / 0.12);
      transform: translateX(0);
      transition: transform var(--transition-slow);
    }

    .filter-panel--hidden {
      display: flex !important;
      transform: translateX(110%);
    }
  }

  @media (max-width: 767px) {
    .stat-grid > .stat-card {
      flex: 1 1 100%;
    }

    .page-header__title {
      font-size: var(--text-xl);
    }

    .auth-layout {
      padding: var(--space-6) var(--space-4);
      justify-content: flex-start;
      padding-top: var(--space-12);
    }

    .auth-layout__card {
      padding: var(--space-5) var(--space-5);
      border-radius: var(--radius-lg);
      max-width: 100%;
    }

    .main-content {
      padding: var(--space-5) var(--space-4);
    }

    .section {
      margin-bottom: var(--space-6);
    }

    .stat-card {
      padding: var(--space-4) var(--space-5);
    }

    .mgmt-table-wrap {
      border-radius: var(--radius-lg);
    }

    .filter-row,
    .flex-between {
      flex-direction: column;
      align-items: stretch;
    }

    .btn-group,
    .page-header__actions {
      flex-wrap: wrap;
      gap: var(--space-2);
    }

    .auth-layout__card .btn {
      width: 100%;
      justify-content: center;
    }

    .app-footer__inner {
      flex-direction: column;
      gap: var(--space-1);
      text-align: center;
    }
  }

  @media (min-width: 1024px) {
    .mobile-nav {
      display: none;
    }

    .side-nav__overlay {
      display: none;
    }

    .side-nav {
      transform: translateX(0) !important;
    }
  }

}