@media (max-width: 760px) {
  html, body {
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
  }

  .app-shell,
  .content,
  .panel,
  .two-column,
  .video-list,
  .video-row,
  .topbar,
  .panel-head {
    min-width: 0;
    max-width: 100%;
  }

  .sidebar {
    position: sticky;
    top: 0;
    z-index: 100;
    width: 100%;
    height: auto;
    padding: 9px 12px 8px;
    background: rgba(9, 11, 18, .97);
    border-right: 0;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 12px 30px rgba(0, 0, 0, .34);
  }

  .brand {
    padding: 0 3px 8px;
    gap: 9px;
  }

  .brand-mark.small {
    width: 31px;
    height: 31px;
    border-radius: 9px;
    font-size: 14px;
  }

  .brand b { font-size: 13px; }
  .brand small { display: none; }

  .sidebar nav {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 4px;
    overflow: visible;
    width: 100%;
  }

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

  .sidebar nav a {
    min-width: 0;
    justify-content: center;
    white-space: normal;
    text-align: center;
    line-height: 1.15;
    padding: 8px 4px;
    border-radius: 9px;
    font-size: 10px;
    gap: 4px;
  }

  .sidebar nav a span {
    font-size: 14px;
    width: 15px;
  }

  .sidebar nav a.active { box-shadow: inset 0 -2px var(--violet); }
  .content {
    width: 100%;
    padding: 18px 12px 40px;
  }

  .panel {
    width: 100%;
    padding: 17px;
    scroll-margin-top: 152px;
  }

  .topbar,
  .panel-head {
    width: 100%;
  }

  .video-info,
  .video-info h3,
  .video-info p {
    min-width: 0;
    overflow-wrap: anywhere;
  }

  .inline-form select { min-width: 0; }
  .log-panel pre { max-width: 100%; overflow-wrap: anywhere; }
  .password-form input,
  .create-form textarea,
  .create-form select { min-width: 0; max-width: 100%; }
}

@media (max-width: 430px) {
  .brand { padding-bottom: 7px; }

  .sidebar nav a span {
    display: none;
  }

  .sidebar nav a {
    min-height: 35px;
    font-size: 10px;
  }

  .topbar { gap: 15px; margin-bottom: 20px; }
  .topbar h1 { font-size: 24px; }

  .top-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .top-actions .button { width: 100%; padding-inline: 8px; font-size: 12px; }

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

  .search-box { width: 100%; }
  .search-box input { width: 100%; min-width: 0; }

  .video-row {
    grid-template-columns: 88px minmax(0, 1fr) 36px;
    gap: 9px;
  }

  .thumb { width: 88px; height: 52px; }
  .video-info h3 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
  .video-info p { font-size: 10px; }
  .inline-form { grid-column: 1 / -1; }
  .inline-form select { width: 100%; }

  .security-panel { gap: 20px; }
  .dialog-card { padding: 22px; }
  .dialog-actions { flex-direction: column-reverse; }
  .dialog-actions .button { width: 100%; }
}