@media (min-width: 1800px) {
  .app-shell {
    gap: 20px;
    padding: 22px 24px 112px;
  }

  .content-grid {
    grid-template-columns: minmax(560px, 0.38fr) minmax(0, 1fr);
  }

  .app-shell.has-open-detail .content-grid {
    grid-template-columns: minmax(500px, 0.34fr) minmax(0, 1fr);
  }
}

@media (max-width: 980px) {
  .topbar {
    grid-template-columns: 1fr;
    grid-template-areas:
      "title"
      "metrics"
      "modes";
  }

  .top-metrics,
  .mode-buttons {
    justify-content: flex-start;
  }

  .content-grid {
    grid-template-columns: minmax(380px, 0.5fr) minmax(0, 1fr);
  }

  .app-shell.has-open-detail .content-grid {
    grid-template-columns: minmax(340px, 0.42fr) minmax(0, 1fr);
  }

  .command-center {
    grid-template-columns: 1fr;
  }

  .detail-layout {
    grid-template-columns: 1fr;
  }

  .proposal-detail {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 780px) {
  body {
    background: var(--bg);
  }

  .app-shell {
    display: block;
    height: auto;
    min-height: 100vh;
    overflow: visible;
    padding: max(8px, calc(var(--safe-top) + 8px)) 8px calc(132px + var(--safe-bottom));
  }

  body.app-page {
    position: relative;
    height: auto;
    overflow-x: hidden;
    overflow-y: auto;
  }

  body.mobile-detail-open {
    overflow: hidden;
  }

  .folder-rail {
    display: none;
  }

  .workspace {
    gap: 10px;
  }

  .topbar {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 14px;
  }

  .topbar h2 {
    max-width: 9ch;
    font-size: clamp(2rem, 13vw, 3.35rem);
  }

  .top-metrics {
    width: 100%;
  }

  .cognitive-core {
    grid-template-columns: 64px minmax(0, 1fr);
    min-width: 0;
    width: 100%;
  }

  .core-ring {
    width: 60px;
    height: 60px;
  }

  .core-microstats {
    grid-column: 1 / -1;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .core-waveform {
    grid-column: 1 / -1;
  }

  .mode-buttons {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    width: 100%;
  }

  .mode-buttons button {
    min-width: 0;
    min-height: 42px;
    padding: 0 9px;
    font-size: clamp(0.82rem, 3.5vw, 0.98rem);
    line-height: 1.1;
  }

  .mobile-folder-strip {
    position: sticky;
    top: max(8px, calc(var(--safe-top) + 8px));
    z-index: 10;
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: 164px;
    gap: 7px;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    padding: 8px;
    border-radius: var(--radius);
    scrollbar-width: none;
  }

  .mobile-folder-strip::-webkit-scrollbar {
    display: none;
  }

  .mobile-folder-strip button {
    display: inline-flex;
    align-items: center;
    justify-content: flex-start;
    gap: 7px;
    min-width: 0;
    min-height: 48px;
    padding: 0 8px;
    font-size: clamp(0.78rem, 3.3vw, 0.92rem);
    line-height: 1.1;
    overflow: hidden;
    white-space: nowrap;
  }

  .mobile-folder-strip [data-mobile-mode="daily"] {
    border-color: rgba(126, 226, 168, 0.42);
    background:
      linear-gradient(135deg, rgba(126, 226, 168, 0.19), rgba(255, 255, 255, 0.075)),
      rgba(255, 255, 255, 0.07);
  }

  .mobile-folder-strip [data-mobile-mode="portfolio"] {
    border-color: rgba(78, 173, 255, 0.36);
    background:
      linear-gradient(135deg, rgba(78, 173, 255, 0.14), rgba(255, 255, 255, 0.065)),
      rgba(255, 255, 255, 0.06);
  }

  .mobile-folder-name {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .mobile-folder-strip [data-folder-count] {
    flex: 0 0 auto;
    margin-left: auto;
    min-width: 22px;
  }

  .mobile-folder-strip .folder-icon {
    flex-basis: 30px;
    width: 30px;
    height: 30px;
  }

  .mobile-folder-strip .folder-icon svg {
    width: 17px;
    height: 17px;
  }

  .content-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
    height: auto;
    min-height: auto;
  }

  .app-shell.has-open-detail .content-grid {
    grid-template-columns: 1fr;
  }

  .pane-heading {
    grid-template-columns: 1fr;
  }

  .pane-heading input {
    font-size: clamp(0.92rem, 4vw, 1rem);
  }

  .scroll-list {
    max-height: 30vh;
  }

  .detail-content {
    min-height: 42vh;
    max-height: none;
  }

  .app-shell.has-open-detail .detail-pane {
    position: fixed;
    inset: max(8px, calc(var(--safe-top) + 8px)) 8px max(8px, calc(var(--safe-bottom) + 8px));
    z-index: 38;
    width: auto;
    min-height: 0;
    border-radius: var(--radius);
  }

  .app-shell.has-open-detail .detail-content {
    min-height: 0;
    max-height: none;
    padding: 14px;
  }

  .detail-layout {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .proposal-detail .detail-canvas {
    min-height: 0;
  }

  .proposal-diff-grid {
    grid-template-columns: 1fr;
  }

  .proposal-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .detail-utility-grid {
    grid-template-columns: 1fr;
  }

  .detail-sidebar {
    position: static;
    padding-top: 0;
  }

  .app-shell.has-open-detail .note-editor textarea {
    min-height: min(58vh, 560px);
  }

  body.mobile-detail-open .quick-input {
    opacity: 0;
    pointer-events: none;
    transform: translateY(calc(100% + 24px));
  }

  .command-center {
    grid-template-columns: 1fr;
  }

  .calendar-day {
    min-height: 34px;
  }

  .calendar-strip {
    gap: 5px;
  }

  .stats-grid,
  .summary-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .quick-input {
    width: calc(100vw - 14px);
    grid-template-areas: "mode text send";
    grid-template-columns: 82px minmax(0, 1fr) 74px;
    bottom: max(18px, calc(var(--safe-bottom) + 18px));
    gap: 7px;
    padding: 8px;
  }

  .quick-input select,
  .quick-input textarea,
  .quick-input button {
    min-width: 0;
    font-size: clamp(0.88rem, 3.8vw, 1rem);
  }

  .quick-input textarea {
    min-height: 46px;
    max-height: 46px;
    padding: 11px 100px 10px 10px;
    line-height: 1.25;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .quick-input button {
    padding: 0 10px;
  }

  .quick-status {
    right: 89px;
    top: 50%;
    max-width: 62px;
    padding-right: 7px;
    line-height: 1;
  }

  .todo-card {
    grid-template-columns: 1fr;
  }

  .todo-open strong {
    font-size: clamp(1rem, 5vw, 1.22rem);
    line-height: 1.15;
  }

  .todo-open small {
    font-size: clamp(0.82rem, 3.8vw, 0.98rem);
    line-height: 1.2;
    overflow-wrap: anywhere;
  }

  .todo-list-meta {
    gap: 7px;
  }

  .eta-pill {
    max-width: 100%;
    white-space: normal;
  }

  .todo-action {
    justify-self: stretch;
    font-size: 1rem;
  }

  .detail-header {
    display: grid;
  }

  .detail-actions {
    min-height: 76px;
  }

  .todo-meta-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .mobile-explorer {
    position: fixed;
    right: 8px;
    bottom: calc(102px + var(--safe-bottom));
    left: 8px;
    z-index: 42;
    display: block;
    max-height: min(64vh, 560px);
    padding: 12px;
    border-radius: var(--radius);
    opacity: 0;
    pointer-events: none;
    transform: translateY(calc(100% + 24px));
  }

  .mobile-explorer.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  body.mobile-sheet-open {
    overflow: hidden;
  }
}