@media (max-width: 1240px) {
  .work-os {
    grid-template-columns: 230px minmax(0, 1fr);
  }

  .workspace-grid {
    grid-template-columns: 1fr;
  }

  .context-rail {
    position: static;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .rail-panel {
    min-width: 0;
  }
}

@media (max-width: 980px) {
  .work-os {
    grid-template-columns: 1fr;
    padding-bottom: 86px;
  }

  .os-sidebar {
    position: static;
    height: auto;
    padding: 14px;
  }

  .brand-block {
    margin-bottom: 2px;
  }

  .side-nav {
    grid-auto-flow: column;
    grid-auto-columns: minmax(128px, 1fr);
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .side-nav button {
    grid-template-columns: 30px 1fr;
    white-space: nowrap;
  }

  .side-nav em,
  .sidebar-card {
    display: none;
  }

  .workspace-shell {
    padding: 16px;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .top-actions {
    width: 100%;
    justify-content: space-between;
  }

  .user-chip {
    min-width: 0;
  }

  .pipeline {
    grid-template-columns: 1fr;
  }

  .pipeline-step {
    min-height: auto;
  }

  .pipeline-step:not(:last-child)::after {
    content: "↓";
    top: auto;
    right: 50%;
    bottom: -18px;
    transform: translateX(50%);
  }

  .recommended-tools,
  .template-grid,
  .context-rail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .library-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  body {
    background:
      radial-gradient(circle at 15% 0%, rgba(109, 76, 255, 0.2), transparent 32%),
      linear-gradient(180deg, #f8fbff, #edf3ff);
  }

  .os-sidebar {
    border-radius: 0 0 24px 24px;
  }

  .workspace-shell {
    padding: 12px;
  }

  .topbar h1 {
    font-size: 28px;
    margin-bottom: 4px;
  }

  .topbar p {
    max-width: 100%;
    line-height: 1.45;
  }

  .top-actions button {
    display: none;
  }

  .user-chip {
    width: 100%;
    min-height: 54px;
    box-shadow: none;
  }

  .command-center,
  .panel-section,
  .rail-panel {
    border-radius: 20px;
    padding: 16px;
  }

  .command-copy h2 {
    font-size: 34px;
  }

  .command-actions,
  .recommended-tools,
  .template-grid,
  .context-rail,
  .result-types {
    grid-template-columns: 1fr;
  }

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

  .tool-card {
    min-height: auto;
  }

  .section-title {
    align-items: flex-start;
    flex-direction: column;
  }

  .section-title button {
    width: 100%;
  }

  .mobile-dock {
    position: fixed;
    z-index: 20;
    right: 10px;
    bottom: 10px;
    left: 10px;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 6px;
    padding: 8px;
    border: 1px solid rgba(255, 255, 255, 0.55);
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 18px 40px rgba(3, 7, 37, 0.22);
    backdrop-filter: blur(14px);
  }

  .mobile-dock button {
    display: grid;
    gap: 3px;
    place-items: center;
    min-height: 48px;
    border: 0;
    border-radius: 16px;
    background: transparent;
    color: #67748f;
    font-size: 11px;
    font-weight: 800;
  }

  .side-nav {
    scroll-snap-type: x proximity;
  }

  .side-nav button {
    scroll-snap-align: start;
    min-height: 46px;
  }

  .mobile-dock button.create {
    background: linear-gradient(135deg, var(--purple), var(--blue));
    color: white;
    transform: translateY(-12px);
    box-shadow: 0 12px 24px rgba(83, 82, 255, 0.34);
  }

  .mobile-dock button span {
    font-size: 18px;
    line-height: 1;
  }
}

@media (max-width: 420px) {
  .side-nav {
    grid-auto-columns: minmax(128px, 1fr);
  }

  .library-grid {
    grid-template-columns: 1fr;
  }

  .topbar p,
  .command-copy p {
    font-size: 14px;
  }

  .mobile-dock {
    right: 6px;
    bottom: 6px;
    left: 6px;
    border-radius: 18px;
  }

  .mobile-dock button {
    font-size: 10px;
  }
}