@media (max-width: 920px) {
  .app-shell {
    width: min(100% - 28px, 720px);
    padding: 16px 0 24px;
  }

  .start-screen {
    padding: 38px 0 20px;
  }

  .start-copy {
    text-align: center;
  }

  .start-copy .brand {
    justify-content: center;
  }

  .start-lead,
  .breaker-preview {
    margin-inline: auto;
  }

  .game-layout {
    grid-template-columns: 1fr;
    grid-template-areas:
      "field"
      "board"
      "controls";
  }

  .polarity-button {
    width: min(100%, 560px);
    min-height: 68px;
    margin-inline: auto;
  }

  .canvas-frame {
    width: min(100%, 570px);
  }

  .control-panel {
    width: min(100%, 570px);
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    margin-inline: auto;
  }

  .game-meta {
    grid-column: 1 / -1;
    grid-template-columns: repeat(4, 1fr);
  }

  .level-card {
    grid-column: 1;
  }

  .brick-legend {
    grid-column: 2;
  }

  .control-hint {
    grid-column: 1 / -1;
  }
}

@media (max-width: 580px) {
  .home-link {
    top: 10px;
    left: 10px;
    width: 44px;
    height: 44px;
  }

  .app-shell {
    width: min(100% - 18px, 500px);
    padding-top: 9px;
  }

  .start-screen {
    min-height: calc(100svh - 18px);
    padding: 50px 0 10px;
  }

  .start-copy .brand {
    display: none;
  }

  .eyebrow {
    margin: 0 0 7px;
    font-size: 0.61rem;
  }

  .start-copy h1 {
    font-size: clamp(2.9rem, 14vw, 4.2rem);
  }

  .start-lead {
    margin-top: 13px;
    font-size: 0.9rem;
    line-height: 1.45;
  }

  .breaker-preview {
    height: 106px;
    margin-top: 14px;
    border-radius: 19px;
  }

  .preview-bricks {
    top: 13px;
    left: 14px;
    width: 172px;
    gap: 3px;
  }

  .preview-bricks i {
    height: 16px;
    border-radius: 4px;
  }

  .preview-curve {
    right: 53px;
    bottom: 18px;
    width: 110px;
    height: 55px;
  }

  .preview-ball {
    right: 128px;
    bottom: 39px;
    width: 14px;
    height: 14px;
  }

  .preview-paddle {
    right: 18px;
    bottom: 13px;
    width: 82px;
    height: 11px;
  }

  .breaker-preview > b {
    display: none;
  }

  .setup-card {
    padding: 19px;
    border-radius: 23px;
  }

  .setup-card__header {
    padding-bottom: 12px;
  }

  .quick-rules {
    gap: 7px;
    margin: 14px 0;
  }

  .quick-rules li {
    font-size: 0.69rem;
  }

  .game-screen {
    min-height: auto;
  }

  .game-header {
    min-height: 44px;
    padding-left: 50px !important;
  }

  .brand--compact {
    gap: 7px;
    font-size: 0.62rem;
  }

  .brand--compact .brand-mark {
    width: 32px;
    height: 32px;
  }

  .status-line {
    min-height: 32px;
    margin: 3px 0 6px;
    padding: 7px 9px;
    font-size: 0.63rem;
  }

  .game-layout {
    gap: 7px;
  }

  .polarity-button {
    min-height: 56px;
    grid-template-columns: 42px minmax(0, 1fr) 36px;
    gap: 9px;
    padding: 7px 9px;
    border-radius: 16px;
  }

  .polarity-button__arrow {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    font-size: 1.5rem;
  }

  .polarity-button strong {
    font-size: 1.05rem;
  }

  .polarity-button__switch {
    width: 34px;
    height: 21px;
  }

  .polarity-button__switch i {
    top: 3px;
  }

  [data-polarity="left"] .polarity-button__switch i {
    transform: translateX(-13px);
  }

  .canvas-frame {
    padding: 4px;
    border-radius: 22px;
  }

  #playfield {
    border-radius: 18px;
  }

  .launch-chip {
    bottom: 23px;
    min-width: 175px;
    padding: 5px 9px;
    font-size: 0.56rem;
  }

  .control-panel {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 7px;
    border-radius: 17px;
  }

  .game-meta {
    grid-column: 1;
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
  }

  .stat-card {
    min-height: 44px;
    padding: 5px 6px;
    border-radius: 10px;
  }

  .stat-card span {
    font-size: 0.48rem;
  }

  .stat-card strong {
    font-size: 0.9rem;
  }

  .stat-card .lives-value {
    font-size: 0.57rem;
  }

  .level-card,
  .brick-legend {
    grid-column: 1;
  }

  .level-card {
    min-height: 48px;
    grid-template-columns: 45px minmax(0, 1fr);
    padding: 4px 7px;
  }

  .level-card .level-number {
    width: 45px;
    height: 36px;
  }

  .brick-legend {
    display: none;
  }

  .control-hint {
    display: none;
  }

  .game-dialog {
    margin-inline: 8px;
    padding: 25px 21px;
    border-radius: 24px;
  }

  .game-dialog h2 {
    font-size: 2.1rem;
  }
}

@media (max-width: 350px) {
  .start-copy h1 {
    font-size: 2.65rem;
  }

  .polarity-button small {
    font-size: 0.5rem;
  }

  .stat-card strong {
    font-size: 0.8rem;
  }
}

@media (max-height: 760px) and (min-width: 921px) {
  .app-shell {
    padding-block: 11px;
  }

  .game-screen {
    min-height: calc(100svh - 22px);
  }

  .canvas-frame {
    width: min(100%, calc((100svh - 132px) * 0.9444), 680px);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
  }
}