.mobile-nav, .mobile-viewport, .install-app { display: none; }

@media (max-width: 760px) {
  main { padding-top: max(24px, env(safe-area-inset-top)); padding-left: max(16px, env(safe-area-inset-left)); padding-right: max(16px, env(safe-area-inset-right)); }
  .install-app { display: inline-flex; align-items: center; font-size: 12px; padding: 8px 12px; }
  .title-row { flex-wrap: wrap; }
  #appView.mobile-ready { padding-bottom: calc(100px + env(safe-area-inset-bottom)); }
  .mobile-ready > .layout { display: none; }
  .mobile-ready .mobile-viewport {
    display: flex;
    align-items: flex-start;
    width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    overscroll-behavior-x: contain;
    scrollbar-width: none;
    transition: height 320ms cubic-bezier(.22, 1, .36, 1);
  }
  .mobile-viewport::-webkit-scrollbar { display: none; }
  .mobile-page {
    flex: 0 0 100%;
    min-width: 0;
    padding: 12px 10px 24px;
    scroll-snap-align: start;
    scroll-snap-stop: always;
  }
  .mobile-page > .cards { margin-bottom: 0; }
  .mobile-page > .panel { width: 100%; min-width: 0; }
  .mobile-page > .history { margin-top: 24px; }
  .mobile-page .inputpanel { display: flex; flex-direction: column; }
  .mobile-page .timer-widget { min-height: 440px; }
  .mobile-ready .mobile-nav {
    display: block;
    position: fixed;
    z-index: 50;
    bottom: calc(14px + env(safe-area-inset-bottom));
    left: 50%;
    transform: translateX(-50%);
    width: min(430px, calc(100% - 32px));
    padding: 6px;
    border: 1px solid var(--line);
    border-radius: 26px;
    background: var(--paper);
    box-shadow: 0 12px 32px var(--overlay), var(--small-raised);
  }
  .mobile-tabs { position: relative; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .mobile-tab-indicator {
    position: absolute;
    inset: 0 auto 0 0;
    width: 25%;
    border-radius: 20px;
    background: var(--blue-dark);
    box-shadow: var(--inset);
    transform: translateX(calc(var(--active-tab, 0) * 100%));
    transition: transform 380ms cubic-bezier(.22, 1, .36, 1);
    pointer-events: none;
  }
  .mobile-tabs button {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    min-height: 62px;
    padding: 8px 2px;
    border: 0;
    border-radius: 20px;
    background: transparent;
    box-shadow: none;
    color: var(--muted);
    font-size: 10px;
    font-weight: 600;
    white-space: nowrap;
    transition: color 200ms ease, transform 300ms ease;
  }
  .mobile-tabs button:hover, .mobile-tabs button:active { background: transparent; box-shadow: none; }
  .mobile-tabs button[aria-selected="true"] { color: var(--blue); }
  .mobile-tabs svg { width: 21px; height: 21px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; transition: transform 300ms cubic-bezier(.22, 1, .36, 1); }
  .mobile-tabs button[aria-selected="true"] svg { transform: translateY(-1px); }
  .mobile-tabs button:focus-visible { outline: 2px solid var(--blue); outline-offset: -2px; }
  #notice { bottom: calc(108px + env(safe-area-inset-bottom)); }
}

@media (forced-colors: active) {
  .mobile-tabs button[aria-selected="true"] { outline: 2px solid Highlight; }
}
@media (prefers-reduced-motion: reduce) {
  .mobile-viewport, .mobile-tab-indicator, .mobile-tabs button, .mobile-tabs svg { transition: none; }
}