/* Navex · css/install-ux.css — «Установить приложение» (раунд 13, §12.1 п. 10: плашка на телефоне + окно с вкладками iPhone / Android / ПК).
   1. схемы шагов (SVG)  2. вкладки и окно / шторка  3. шаги  4. страница install.html  5. плашка */

/* ================================================================ 1. СХЕМЫ ШАГОВ */
.uxn-sc { display: block; width: 100%; height: auto; border-radius: var(--rounded-md); }
.uxn-sc .sc-t { font-family: var(--font-text); font-weight: 500; fill: var(--ink); }
.uxn-sc .sc-tb { font-weight: 600; }
.uxn-sc .sc-ts { fill: var(--ink-soft); }
.uxn-sc .sc-tw { fill: #fff; }
.uxn-sc .sc-bg { fill: var(--surface-subtle); }
.uxn-sc .sc-w { fill: var(--surface-raised); }
.uxn-sc .sc-g { fill: var(--surface-sunken); }
.uxn-sc .sc-hl { fill: var(--primary); }
.uxn-sc .sc-ink { fill: var(--ink); }
.uxn-sc .sc-soft { fill: var(--ink-soft); }
.uxn-sc .sc-dim { fill: rgb(22 22 22 / .34); }
.uxn-sc .sc-nofill { fill: none; }
.uxn-sc .sc-ph { stroke: var(--ink); stroke-width: 3; }
.uxn-sc .sc-ph2 { stroke: var(--line-strong); stroke-width: 1.5; }
.uxn-sc .sc-card { stroke: var(--line); stroke-width: 1.2; }
.uxn-sc .sc-pop { filter: drop-shadow(0 6px 10px rgb(22 22 22 / .18)); }
.uxn-sc .sc-hlring { stroke: var(--ink); stroke-width: 1.8; }
.uxn-sc .sc-ln { fill: none; stroke: var(--ink); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.uxn-sc .sc-ln.sc-nofill { stroke-width: 2; }
.uxn-sc .sc-soft-ln { stroke: var(--ink-soft); }
.uxn-sc .sc-ar { fill: none; stroke: var(--ink); stroke-width: 3; stroke-linecap: round; }

/* ================================================================ 2. ВКЛАДКИ, ОКНО / ШТОРКА */
dialog.uxn-inst-dlg { --nx-modal-w: 940px; }
.uxn-inst-dlg .modal__body { gap: 14px; }
.uxn-inst-dlg__head { display: grid; gap: 6px; min-width: 0; }
.uxn-inst-dlg .modal__title { font-weight: 300; }
.uxn-inst { display: grid; gap: 16px; min-width: 0; }

/* вкладки: iPhone / Android / ПК — три равные кнопки по 44 px */
.uxn-tabs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 4px; padding: 4px; border-radius: var(--rounded-pill); background: var(--surface-subtle); box-shadow: var(--hl-top), inset 0 0 0 1px var(--line); }
.uxn-tab {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 44px; padding: 0 12px; border: 0; border-radius: var(--rounded-pill);
  background: transparent; color: var(--ink-soft); font: 500 15px/1 var(--font-text); cursor: pointer; min-width: 0;
  transition: background var(--fast) var(--ease), color var(--fast) var(--ease), box-shadow var(--fast) var(--ease);
}
.uxn-tab .nx-icon { --nx-size: 20px; flex: none; }
.uxn-tab[aria-selected="true"] { background: var(--ink); color: var(--ink-inverse); box-shadow: var(--shadow-1); }
.uxn-tab:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 2px; }
@media (hover: hover) and (pointer: fine) { .uxn-tab[aria-selected="false"]:hover { background: var(--surface-raised); color: var(--ink); } }
:root[data-motion="reduce"] .uxn-tab { transition: none; }
.uxn-inst__panel { display: grid; gap: 16px; min-width: 0; }
.uxn-inst__panel:focus { outline: none; }

.uxn-inst__who { display: inline-flex; align-items: center; gap: 8px; min-height: 36px; padding: 0 14px 0 10px; border-radius: var(--rounded-pill); background: var(--surface-raised); box-shadow: 0 0 0 1px var(--line); font-size: 14px; justify-self: start; }
.uxn-inst__who .nx-icon { --nx-size: 20px; }
.uxn-inst__who b { font-weight: 600; }
.uxn-inst__who span { color: var(--ink-soft); }
.uxn-inst__who span::before { content: "·"; margin-right: 8px; }

.uxn-inst__note { display: flex; gap: 10px; align-items: flex-start; padding: 12px 14px; border-radius: var(--rounded-md); background: var(--info-soft); color: var(--ink); font-size: 14px; line-height: 1.4; }
.uxn-inst__note .nx-icon { --nx-size: 20px; flex: none; color: var(--info); margin-top: 1px; }
.uxn-inst__note p { margin: 0; }
.uxn-inst__note--ok { background: var(--success-soft); }
.uxn-inst__note--ok .nx-icon { color: var(--success); }

.uxn-inst__foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 8px; padding-top: 12px; box-shadow: 0 -1px 0 var(--line); }
.uxn-inst__foot:empty { display: none; }
.uxn-inst__foot--page { justify-content: flex-start; padding-top: 0; box-shadow: none; }

/* ================================================================ 3. ШАГИ */
.uxn-steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; counter-reset: uxn; }
.uxn-step { display: grid; align-content: start; gap: 12px; padding: 10px 10px 14px; border-radius: var(--rounded-lg); background: var(--surface); box-shadow: var(--hl-top), 0 0 0 1px var(--line); min-width: 0; }
.uxn-step__fig { border-radius: var(--rounded-md); overflow: hidden; }
.uxn-step__txt { display: flex; gap: 10px; align-items: flex-start; padding: 0 4px; }
.uxn-step__no { flex: none; display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--ink); color: #fff; font: 600 14px/1 var(--font-display); }
.uxn-step__t { margin: 0 0 4px; font: 500 16px/1.25 var(--font-display); letter-spacing: -0.01em; }
.uxn-step__p { margin: 0; font-size: 13.5px; line-height: 1.4; color: var(--ink-soft); }

/* ================================================================ 4. СТРАНИЦА install.html */
#uxn-inst-page { display: grid; gap: 20px; max-width: 1180px; }
.uxn-hero { display: grid; gap: 10px; padding: 28px 32px; border-radius: var(--rounded-xl); background: var(--surface); box-shadow: var(--hl-top), 0 0 0 1px var(--line); }
.uxn-hero__t { margin: 0; font: 300 38px/1.1 var(--font-display); letter-spacing: -0.03em; }
.uxn-hero__p { margin: 0; font-size: 17px; line-height: 1.45; color: var(--ink-soft); max-width: 56ch; }

.uxn-ben { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.uxn-ben__i { display: flex; gap: 14px; padding: 18px; border-radius: var(--rounded-lg); background: var(--surface-raised); box-shadow: var(--hl-top), 0 0 0 1px var(--line); }
.uxn-ben__ic { flex: none; display: inline-grid; place-items: center; width: 44px; height: 44px; border-radius: 14px; background: var(--primary); color: var(--on-primary); }
.uxn-ben__ic .nx-icon { --nx-size: 22px; }
.uxn-ben__i b { font: 500 16px/1.3 var(--font-display); }
.uxn-ben__i p { margin: 4px 0 0; font-size: 14px; line-height: 1.4; color: var(--ink-soft); }

.uxn-sec { display: grid; gap: 16px; padding: 24px; border-radius: var(--rounded-xl); background: var(--surface-raised); box-shadow: var(--hl-top), 0 0 0 1px var(--line); }
.uxn-inst--big .uxn-tab { height: 48px; font-size: 16px; }
.uxn-inst--big .uxn-tabs { max-width: 520px; }
.uxn-inst--big .uxn-inst__who { font-size: 16px; min-height: 40px; background: var(--surface); }
.uxn-inst--big .uxn-steps { gap: 18px; }
.uxn-inst--big .uxn-step { padding: 14px 14px 20px; gap: 16px; }
.uxn-inst--big .uxn-step__no { width: 40px; height: 40px; font-size: 20px; }
.uxn-inst--big .uxn-step__t { font-size: 20px; }
.uxn-inst--big .uxn-step__p { font-size: 15.5px; line-height: 1.45; }
.uxn-inst--big .uxn-step__txt { gap: 14px; padding: 0 6px; }

/* «так выглядит плашка на телефоне» (на ПК плашки нет — её видно только на телефоне) */
.uxn-demo { display: grid; grid-template-columns: minmax(0, 1fr) 410px; gap: 32px; align-items: center; padding: 28px; border-radius: var(--rounded-xl); background: var(--surface-raised); box-shadow: var(--hl-top), 0 0 0 1px var(--line); }
.uxn-demo__t { margin: 0 0 8px; font: 400 22px/1.2 var(--font-display); letter-spacing: -0.02em; }
.uxn-demo__p { margin: 0; color: var(--ink-soft); font-size: 15px; line-height: 1.5; max-width: 52ch; }
.uxn-phone { justify-self: center; width: 410px; max-width: 100%; box-sizing: border-box; padding: 10px; border-radius: 48px; background: var(--ink); }
.uxn-phone__scr { position: relative; height: 480px; border-radius: 38px; background: var(--canvas); overflow: hidden; padding: 34px 16px 0; }
.uxn-phone__line { height: 12px; width: 62%; border-radius: 6px; background: var(--surface-sunken); margin-bottom: 12px; }
.uxn-phone__line--s { width: 40%; }
.uxn-phone__card { height: 110px; border-radius: 20px; background: var(--surface-raised); margin-top: 16px; }
.uxn-phone__fab .nx-icon { --nx-size: 26px; }
.uxn-phone__fab { position: absolute; right: 16px; bottom: 100px; width: 56px; height: 56px; border-radius: 50%; background: var(--primary); display: grid; place-items: center; box-shadow: var(--shadow-2); }
.uxn-phone__nav { position: absolute; left: 12px; right: 12px; bottom: 12px; height: 64px; border-radius: 32px; background: var(--glass-fill-strong); box-shadow: var(--glass-edge), 0 10px 24px -10px rgb(22 22 22 / .3); display: flex; align-items: center; justify-content: space-around; }
.uxn-phone__nav i { width: 26px; height: 26px; border-radius: 8px; background: var(--surface-sunken); }
.uxn-ib.uxn-ib--demo { position: absolute; left: 12px; right: 12px; bottom: 166px; z-index: 1; animation: none; }

/* ================================================================ 5. ПЛАШКА (вариант c) */
.uxn-ib {
  position: fixed; left: 12px; right: 12px; bottom: var(--uxn-ib-b, 88px); z-index: 15;
  display: flex; align-items: center; gap: 10px; box-sizing: border-box;
  padding: 8px 6px 8px 10px; border-radius: var(--rounded-lg);
  background: var(--glass-fill-strong);
  -webkit-backdrop-filter: blur(16px) saturate(160%); backdrop-filter: blur(16px) saturate(160%);
  box-shadow: var(--glass-edge), 0 14px 32px -12px rgb(22 22 22 / .3);
  animation: uxn-ib-in .42s var(--ease-drawer, cubic-bezier(.32, .72, 0, 1)) both;
}
.uxn-ib[hidden] { display: none; }
.uxn-ib__ico { flex: none; width: 40px; height: 40px; padding: 7px; box-sizing: border-box; border-radius: 12px; background: var(--surface-raised); box-shadow: 0 0 0 1px var(--line); }
.uxn-ib__txt { flex: 1 1 auto; min-width: 0; margin: 0; font-size: 13.5px; line-height: 1.25; color: var(--ink-soft); }
.uxn-ib__txt b { color: var(--ink); font-weight: 600; }
.uxn-ib__how { flex: none; min-width: 64px; }
.uxn-ib .uxn-ib__x { flex: none; width: 44px; height: 44px; margin-left: -2px; }
@keyframes uxn-ib-in { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
:root[data-motion="reduce"] .uxn-ib { animation: none; }
@media (prefers-reduced-motion: reduce) { :root:not([data-motion="full"]) .uxn-ib { animation: none; } }
:root[data-nx-drawer] .uxn-ib:not(.uxn-ib--demo), :root[data-mz-hide-tabbar] .uxn-ib:not(.uxn-ib--demo) { display: none; }
@media (min-width: 768px) { .uxn-ib:not(.uxn-ib--demo) { display: none; } }

/* ================================================================ ТЕЛЕФОН */
@media (max-width: 899.98px) {
  .uxn-demo { grid-template-columns: minmax(0, 1fr); }
  .uxn-hero { padding: 24px; }
}
@media (max-width: 767.98px) {
  dialog.uxn-inst-dlg { --nx-sheet-max-w: 560px; }
  .uxn-tab { padding: 0 8px; gap: 6px; font-size: 14.5px; }
  .uxn-steps { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .uxn-step { padding: 8px 8px 14px; }
  .uxn-inst__foot { flex-direction: column; align-items: stretch; }
  .uxn-inst__foot .btn { flex: none; width: 100%; height: 48px; justify-content: center; }
  .uxn-hero { padding: 20px 16px; border-radius: var(--rounded-lg); }
  .uxn-hero__t { font-size: 28px; }
  .uxn-hero__p { font-size: 15px; }
  .uxn-ben { grid-template-columns: minmax(0, 1fr); gap: 10px; }
  .uxn-ben__i { padding: 14px; }
  .uxn-sec { padding: 12px; border-radius: var(--rounded-lg); }
  .uxn-inst--big .uxn-tabs { max-width: none; }
  .uxn-inst--big .uxn-step { padding: 8px 8px 16px; }
  .uxn-inst--big .uxn-step__t { font-size: 18px; }
  .uxn-inst--big .uxn-step__p { font-size: 14.5px; }
  .uxn-demo { display: none; }
}