@media (max-width: 600px) {
  header {
    padding: 12px 16px;
    flex-wrap: wrap;
    gap: 8px;
  }
  header > div { flex-wrap: wrap; gap: 6px; }
  .logo { font-size: 1.1rem; }
  .btn { padding: 8px 12px; font-size: 0.82rem; min-height: 36px; }
  button { min-height: 36px; }
  main { margin: 20px auto; padding: 0 12px; }
  .modal { margin: 0 12px; padding: 20px 16px; }
  .section-header { flex-direction: column; align-items: flex-start; }
  .playlist-grid { grid-template-columns: 1fr; }
  .page-header { flex-direction: column; align-items: flex-start; gap: 12px; }
  .page-title { font-size: 1.3rem; }
  .members-header { flex-direction: column; align-items: flex-start; }
  .add-form { flex-direction: column; padding: 14px; }
  .add-form input { width: 100%; }
  .add-form .btn { width: 100%; text-align: center; }
  .search-bar { flex-wrap: wrap; padding: 12px; }
  .search-count { order: 3; width: 100%; text-align: right; }
  .two-col { grid-template-columns: 1fr !important; }
  .summary-grid { grid-template-columns: repeat(2, 1fr); }
  .rank-item { padding: 10px 12px; gap: 10px; }
  .save-order-bar {
    width: calc(100% - 32px);
    flex-direction: column;
    gap: 8px;
    padding: 14px;
    text-align: center;
  }
  table, thead, tbody, th, td, tr { display: block; }
  thead { display: none; }
  tr {
    background: var(--surface);
    border-radius: 10px;
    margin-bottom: 10px;
    border: 1px solid var(--border);
    padding: 12px;
    position: relative;
  }
  tr:hover { background: var(--surface); }
  tr:hover td { background: transparent; }
  td { border: none; padding: 4px 0; display: flex; align-items: center; gap: 8px; }
  td:first-child { display: none; }
  td:nth-child(2) { display: none; }
  td:nth-child(3) { margin-bottom: 4px; }
  td:nth-child(3) img,
  td:nth-child(3) div { width: 100% !important; height: 120px !important; border-radius: 8px; }
  td:nth-child(4) .song-title { font-size: 0.9rem; }
  td:nth-child(5)::before { content: "⏱️ "; }
  td:nth-child(6)::before { content: "📅 "; }
  td:last-child { margin-top: 8px; justify-content: flex-end; }
}