@media (max-width: 1240px) {
  .layout {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 920px) {
  .page-shell {
    width: min(100% - 24px, 920px);
    padding-top: 16px;
    padding-bottom: 28px;
  }

  .hero {
    grid-template-columns: 1fr;
    padding: 24px;
  }

  .skin-video-form-grid,
  .skin-video-preview,
  .skin-video-card,
  .skin-product-form-grid,
  .style-form-grid {
    grid-template-columns: 1fr;
  }

  .skin-subtabs,
  .body-subtabs {
    width: min(100%, 420px);
    justify-content: center;
    margin-inline: auto;
  }

  .skin-video-card-actions {
    justify-content: flex-start;
  }

  .hero-main {
    max-width: none;
  }

  .hero-actions,
  .auth-status {
    align-items: center;
    justify-content: center;
    width: 100%;
  }

  .auth-status {
    flex-wrap: wrap;
  }

  .auth-user {
    width: 100%;
  }

  .header-buttons {
    justify-content: center;
    width: 100%;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    justify-items: center;
  }

  .settings-menu {
    width: 100%;
  }

  .settings-panel {
    left: 0;
    right: auto;
    width: 100%;
  }

  .auth-form {
    grid-template-columns: 1fr;
  }

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

  .auth-tabs {
    justify-self: start;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
    padding: 0;
  }

  .view-tabs {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .view-tab {
    justify-content: center;
  }

  .week-nav {
    width: 100%;
    display: grid;
    grid-template-columns: 44px minmax(0, 1fr) 44px;
    align-items: center;
    gap: 8px;
  }

  .week-range-label {
    flex: 1;
    min-width: 0;
    overflow-wrap: anywhere;
  }

  .table-card {
    display: none;
  }

  .journal-summary {
    padding: 18px;
  }

  .skin-videos {
    padding: 18px;
  }

  .skin-products-hero,
  .skin-product-form-card,
  .skin-season-board-card,
  .style-hero,
  .style-card {
    padding: 18px;
  }

  .skin-season-board-wrap {
    display: none;
  }

  .skin-season-mobile-list {
    display: block;
    margin-top: 18px;
  }

  .skin-type-selector {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .skin-type-button {
    padding-inline: 8px;
  }

  .summary-overview {
    flex-direction: column;
    align-items: flex-start;
  }

  .summary-stats {
    grid-template-columns: 1fr;
  }

  .mobile-cards {
    display: block;
  }

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

  .body-grid,
  .body-workout-grid,
  .style-grid,
  .body-fields,
  .body-hero-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  h1 {
    font-size: 2.55rem;
  }

  .card,
  .routine-mobile-card {
    border-radius: 22px;
  }

  .hero,
  .auth-card,
  .info-card,
  .routine-mobile-card,
  .journal-summary {
    padding: 18px;
  }

  .header-buttons,
  .auth-tabs,
  .view-tabs {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr;
    justify-items: center;
  }

  #skinViewTab,
  #bodyViewTab,
  #styleViewTab {
    order: initial;
  }

  .skin-subtabs,
  .body-subtabs {
    order: initial;
    width: min(100%, 420px);
    justify-content: center;
    margin-inline: auto;
  }

  .header-buttons {
    max-width: 420px;
    margin: 0 auto;
  }

  .button,
  .auth-tab {
    width: 100%;
    justify-content: center;
    padding-inline: 0;
  }

  .settings-menu,
  #themeToggle,
  #logoutButton {
    width: min(100%, 420px);
    margin-inline: auto;
  }

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

  .mobile-card-main,
  .mobile-card-summary {
    width: 100%;
  }

  .mobile-card-summary {
    flex-wrap: wrap;
    row-gap: 6px;
  }

  .mobile-card-actions {
    width: 100%;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 44px 44px;
    align-items: center;
  }

  .mobile-done-toggle {
    flex: 1;
    justify-content: space-between;
    min-width: 0;
  }

  .sidebar h2,
  .auth-card h2 {
    font-size: 1.5rem;
  }

  .hero-copy,
  .section-note,
  .summary-text,
  .auth-message,
  .body-hero-note {
    font-size: 0.92rem;
    line-height: 1.62;
  }

  .summary-copy h3 {
    font-size: 1.25rem;
  }

  .summary-progress-ring {
    width: 82px;
    height: 82px;
  }

  .summary-stats {
    gap: 8px;
  }

  .summary-stat {
    padding: 12px;
  }

  .summary-stat strong {
    font-size: 1rem;
  }

  .mood-picker {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }

  .mood-chip {
    justify-content: center;
    min-width: 0;
  }

  .week-nav-button {
    min-width: 40px;
    min-height: 40px;
  }

  .week-range-label {
    font-size: 0.74rem;
    letter-spacing: 0.06em;
    line-height: 1.35;
  }

  .mobile-day-wrap {
    flex-wrap: wrap;
    row-gap: 6px;
  }

  .mobile-day {
    font-size: 1.02rem;
  }

  .mobile-weekday,
  .mobile-card-summary,
  .mobile-mood {
    font-size: 0.78rem;
  }

  .mobile-field {
    padding: 11px;
  }

  .mobile-field .routine-step,
  .mobile-field .note-text,
  .mobile-field .cell-placeholder {
    font-size: 0.9rem;
    line-height: 1.58;
  }

  .body-hero,
  .body-card,
  .body-workout-hero,
  .style-hero,
  .style-card {
    padding: 18px;
  }

  .body-workout-parts {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .style-category-control {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .body-part-button,
  .style-category-button {
    justify-content: center;
  }

  .body-workout-item,
  .style-item-card {
    grid-template-columns: 74px minmax(0, 1fr);
  }

  .body-workout-actions,
  .style-item-actions {
    grid-column: 1 / -1;
    width: 100%;
    justify-self: stretch;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  }

  .body-workout-link,
  .body-workout-edit,
  .body-workout-delete,
  .style-item-link,
  .style-item-edit,
  .style-item-delete {
    width: 100%;
    justify-content: center;
  }

  .body-workout-item-image,
  .style-item-image {
    width: 74px;
  }

  .body-calendar-panel {
    width: min(100%, 320px);
  }

  .body-history-item {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .undo-toast {
    bottom: max(14px, env(safe-area-inset-bottom));
    width: calc(100% - 24px);
    border-radius: 22px;
    align-items: stretch;
  }

  .undo-toast-copy {
    font-size: 0.84rem;
  }
}

@media (max-width: 400px) {
  .page-shell {
    width: min(100% - 20px, 400px);
  }

  .hero,
  .auth-card,
  .info-card,
  .routine-mobile-card,
  .journal-summary {
    padding: 16px;
  }

  h1 {
    font-size: 2.2rem;
  }

  .button,
  .auth-tab,
  #settingsButton {
    min-height: 44px;
    font-size: 0.9rem;
  }

  .summary-copy h3 {
    font-size: 1.15rem;
  }

  .mood-picker {
    grid-template-columns: 1fr;
  }

  .skin-type-selector {
    grid-template-columns: 1fr;
  }

  .mobile-card-actions {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .mobile-icon-button {
    width: 100%;
    height: 42px;
  }
}