.mobile-chat-back {
  display: none;
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  font-size: 22px;
  cursor: pointer;
}

@media (max-width: 1280px) {
  .inbox-layout {
    grid-template-columns: 196px 320px minmax(360px, 1fr);
  }

  .page-view {
    padding: 28px;
  }

  .chat-head {
    height: auto;
    min-height: 73px;
    flex-wrap: wrap;
  }

  .chat-actions {
    width: 100%;
    margin-left: 48px;
    overflow-x: auto;
    padding-bottom: 3px;
  }

  .chat-actions select {
    min-width: 145px;
  }
}

@media (max-width: 980px) {
  .inbox-layout {
    grid-template-columns: 280px minmax(0, 1fr);
  }

  .filters {
    display: none;
  }

  .page-head,
  .card-title,
  .integration-card {
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 12px;
  }

  .channel-settings-layout,
  .flow-layout,
  .management-grid,
  .management-grid.admin-grid,
  .team-management-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .channel-config-panel,
  .flow-library,
  .flow-editor {
    min-width: 0;
    min-height: auto;
  }

  .contact-row {
    grid-template-columns: minmax(150px, 1.5fr) minmax(150px, 1fr) 1fr auto;
  }
}

@media (max-width: 760px) {
  body {
    font-size: 14px;
  }

  .app-shell {
    min-height: 100vh;
    min-height: 100dvh;
    overflow: hidden;
  }

  .workspace {
    width: 100%;
    min-width: 0;
    padding-bottom: 64px;
  }

  .rail {
    display: flex;
    position: fixed;
    z-index: 900;
    inset: auto 0 0;
    width: 100%;
    height: 64px;
    padding: 6px 8px calc(6px + env(safe-area-inset-bottom));
    flex: none;
    background: rgba(9, 17, 31, .98);
    box-shadow: 0 -10px 30px rgba(9, 17, 31, .14);
  }

  .rail nav {
    display: flex;
    width: 100%;
    height: 100%;
    margin: 0;
    gap: 3px;
    align-items: center;
    justify-content: space-around;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .rail nav::-webkit-scrollbar {
    display: none;
  }

  .rail-btn {
    width: 44px;
    height: 44px;
    flex: 0 0 44px;
    border-radius: 12px;
  }

  .topbar {
    height: 62px;
    flex: 0 0 62px;
    padding: 0 14px;
  }

  .topbar-brand {
    margin-right: auto;
  }

  .top-actions {
    gap: 7px;
  }

  .top-actions > span:not(.live-dot),
  #refresh {
    display: none;
  }

  .inbox-layout {
    display: grid;
    height: calc(100vh - 126px);
    height: calc(100dvh - 126px);
    grid-template-columns: minmax(0, 1fr);
  }

  .conversation-list-panel {
    display: flex;
    width: 100%;
  }

  .chat-panel {
    display: none;
    width: 100%;
  }

  .mobile-chat-open .conversation-list-panel {
    display: none;
  }

  .mobile-chat-open .chat-panel {
    display: flex;
  }

  .mobile-chat-open .mobile-chat-back {
    display: inline-grid;
    place-items: center;
  }

  .list-head {
    padding: 16px 16px 12px;
  }

  .conversation {
    padding: 14px 16px;
  }

  .chat-head {
    padding: 10px 12px;
  }

  .chat-actions {
    margin-left: 0;
  }

  .chat-actions select {
    min-width: 138px;
  }

  .messages {
    padding: 16px 12px;
  }

  .message {
    max-width: 90%;
  }

  .composer {
    padding: 10px;
  }

  .page-view,
  .dashboard-view {
    padding: 18px 14px 86px;
  }

  .page-head {
    margin-bottom: 18px;
  }

  .page-head h1 {
    font-size: 27px;
  }

  .dashboard-hero {
    min-height: 170px;
    padding: 26px 22px;
    border-radius: 18px;
  }

  .dashboard-hero h1 {
    font-size: 30px;
  }

  .dashboard-hero p {
    font-size: 14px;
  }

  .dashboard-filters {
    grid-template-columns: minmax(0, 1fr);
  }

  .dashboard-refresh {
    width: 100%;
  }

  .dashboard-stat-grid,
  .duration-grid,
  .stat-grid,
  .analytics-grid,
  .settings-preview-grid,
  .flow-options,
  .form-columns,
  .modal-form {
    grid-template-columns: minmax(0, 1fr);
  }

  .contact-row.head,
  .management-row.head {
    display: none;
  }

  .dashboard-team {
    overflow-x: auto;
  }

  .agent-table {
    min-width: 640px;
  }

  .contact-row {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 7px;
    margin: 10px 0;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 12px;
  }

  .management-row,
  .company-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
    margin: 10px 0;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 12px;
  }

  .management-row > :nth-child(2),
  .management-row > :nth-child(3) {
    display: block;
  }

  .management-row .actions {
    justify-content: flex-start;
  }

  .flow-row {
    padding: 14px 16px;
  }

  .flow-canvas {
    justify-content: flex-start;
  }

  .ai-route {
    grid-template-columns: minmax(0, 1fr);
  }

  .ai-route .primary {
    width: 100%;
  }

  .modal-backdrop {
    padding: 10px;
  }

  .modal-card {
    max-height: calc(100dvh - 20px);
    padding: 22px 18px;
    border-radius: 15px;
  }
}

@media (max-width: 420px) {
  .company-logo {
    width: 108px;
    height: 24px;
  }

  .topbar {
    padding: 0 10px;
  }

  .ghost {
    padding: 7px 8px;
  }

  .conversation-preview,
  .conversation-meta {
    margin-left: 45px;
  }

  .card {
    padding: 16px;
    border-radius: 14px;
  }

  .flow-actions,
  .flow-delay,
  .contact-sync-actions {
    align-items: stretch;
    flex-direction: column;
  }
}