/* K3D: 3D-блоки karlson.su (14.10.2026). Подключается только на страницах с 3D, движок static/js/k3d/core.js.
   Постер держит место (width/height), холст и оверлей ложатся ровно на него абсолютно: CLS 0. Анимации только opacity и transform. */
.k3d { position: relative; margin: 0; }
.k3d-st { position: relative; }
.k3d picture { display: block; }
.k3d-poster { display: block; width: 100%; height: auto; transition: opacity .5s ease .08s; user-select: none; -webkit-user-drag: none; }
.k3d-cv { position: absolute; display: block; opacity: 0; transition: opacity .5s ease; cursor: grab; outline: none; -webkit-tap-highlight-color: transparent; }
.k3d-cv:focus-visible { outline: 2px solid var(--red, #FE3725); outline-offset: -2px; }
.k3d-drag .k3d-cv { cursor: grabbing; }
.k3d-ready .k3d-cv { opacity: 1; }
.k3d-ready .k3d-poster { opacity: 0; }
.k3d-ov { position: absolute; pointer-events: none; z-index: 2; overflow: hidden; }

/* подсказка «покрутите», метка 3D, кнопка «Открыть 3D» */
.k3d-hint, .k3d-open { position: absolute; left: 50%; bottom: 14px; display: inline-flex; align-items: center; gap: 8px; white-space: nowrap;
  border-radius: 999px; font-size: 12.5px; line-height: 1; letter-spacing: .01em; }
.k3d-hint { padding: 9px 14px 9px 11px; background: rgba(255, 255, 255, .92); color: var(--ink, #1D1D1B); box-shadow: 0 6px 18px rgba(11, 35, 45, .08);
  transform: translate(-50%, 0); opacity: 0; animation: k3dIn .5s ease .7s forwards; transition: opacity .35s ease, transform .35s ease; }
.k3d-hint svg, .k3d-open svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.k3d-hint.gone { animation: none; opacity: 0; transform: translate(-50%, 6px); }
@keyframes k3dIn { from { opacity: 0; transform: translate(-50%, 6px); } to { opacity: 1; transform: translate(-50%, 0); } }
.k3d-open { pointer-events: auto; transform: translateX(-50%); padding: 0 18px; min-height: 44px; border: 0; cursor: pointer;
  background: var(--steel, #0B232D); color: #fff; font-size: 14px; font-weight: 500; transition: background .2s; }
.k3d-open:hover { background: var(--ink, #1D1D1B); }
.k3d .k3d-open { color: #fff; } /* QA 14.10: правило сайта .kw button { color: inherit } перебивало белый цвет, текст «Открыть 3D» был тёмным на тёмной кнопке */
.k3d-loading .k3d-open { opacity: .6; }
.k3d-tag { position: absolute; left: 14px; top: 14px; z-index: 2; pointer-events: none; display: inline-flex; align-items: center; gap: 6px; padding: 6px 10px; border-radius: 999px;
  background: rgba(255, 255, 255, .9); color: var(--ink, #1D1D1B); font-size: 11px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; }
.k3d-tag::before { content: ''; width: 6px; height: 6px; border-radius: 999px; background: var(--red, #FE3725); }
.k3d-off .k3d-tag, .k3d-off .k3d-hint { display: none; }

/* метки на модели: позицию ставит движок через transform, якорь снизу по центру */
.k3d-lbl { position: absolute; left: 0; top: 0; translate: -50% calc(-100% - 10px); padding: 7px 11px; border-radius: 999px; background: rgba(255, 255, 255, .94);
  color: var(--ink, #1D1D1B); font-size: 12.5px; line-height: 1.2; white-space: nowrap; box-shadow: 0 6px 16px rgba(11, 35, 45, .1); opacity: 0; transition: opacity .3s ease; will-change: transform; }
.k3d-lbl::after { content: ''; position: absolute; left: 50%; bottom: -9px; width: 1px; height: 9px; background: rgba(11, 35, 45, .35); }
.k3d-lbl.on { opacity: 1; }
.k3d-lbl.acc { background: var(--steel, #0B232D); color: #fff; }

/* секция с 3D: модель и панель вариантов */
.k3s .k3s-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); column-gap: 48px; align-items: center; }
.k3s .k3s-grid.flip { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
.k3s .k3s-grid.flip .k3d-st { order: 2; }
.k3s .k3d-st { border-radius: 2px; overflow: hidden; }
.k3s .k3d-st.bgw { background: var(--white, #fff); }
.k3s .k3d-st.bgp { background: linear-gradient(180deg, #fff 0%, var(--pink, #FBEDEB) 100%); }
.k3s-side { display: flex; flex-direction: column; gap: 26px; }
.k3s-side h3 { margin: 0; }
.k3s-grp { display: flex; flex-direction: column; gap: 10px; }
.k3s-grp > .lbl { color: var(--muted, #565B5E); }
.k3s-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.k3s-chips button { display: inline-flex; align-items: center; gap: 9px; min-height: 44px; padding: 0 16px 0 12px; border: 1px solid var(--line, rgba(11,35,45,.18)); border-radius: 999px;
  background: var(--white, #fff); cursor: pointer; font-size: 14px; line-height: 1.1; transition: background .2s, color .2s, border-color .2s; }
.k3s-chips button.nosw { padding-left: 16px; }
.k3s-chips button:hover { border-color: var(--ink, #1D1D1B); }
.k3s-chips button.on, .k3s-chips button[aria-pressed="true"] { background: var(--steel, #0B232D); border-color: var(--steel, #0B232D); color: #fff; }
.k3s-chips i { flex: none; width: 18px; height: 18px; border-radius: 999px; background: var(--c, #ccc); box-shadow: inset 0 0 0 1px rgba(0, 0, 0, .14); }
.k3s-chips i.sw-satin { background: linear-gradient(115deg, #9aa1a6, #e7eaec 45%, #a9b0b5 60%, #dfe3e5); }
.k3s-chips i.sw-mirror { background: linear-gradient(135deg, #6d7377 0%, #fdfdfd 38%, #9aa0a4 52%, #f4f5f6 70%, #7b8185 100%); }
.k3s-chips i.sw-gold { background: linear-gradient(115deg, #a8833e, #f1d9a0 45%, #b8924a 62%, #e9cd8c); }
.k3s-chips i.sw-perf { background: radial-gradient(circle, #3b4146 26%, transparent 29%) 0 0 / 6px 6px, linear-gradient(115deg, #9aa1a6, #e7eaec 45%, #a9b0b5); }
.k3s-note { margin: 0; color: var(--muted, #565B5E); font-size: 15px; line-height: 1.5; min-height: 3em; }
.k3s-cta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; }
.k3s-cta .p { font-size: 14px; }
.k3d-cap { margin: 0; color: var(--muted, #565B5E); font-size: 13px; line-height: 1.45; }
.k3s-steps { display: grid; gap: 0; counter-reset: k3s; border-top: 1px solid var(--line, rgba(11,35,45,.18)); }
.k3s-steps button { position: relative; display: grid; grid-template-columns: 40px 1fr; gap: 4px 12px; padding: 14px 0; border: 0; border-bottom: 1px solid var(--line, rgba(11,35,45,.18));
  background: none; cursor: pointer; text-align: left; color: var(--muted, #565B5E); transition: color .25s; }
.k3s-steps button b { grid-row: span 2; font-size: 13px; font-weight: 600; letter-spacing: .12em; color: var(--corten, #882727); padding-top: 3px; }
.k3s-steps button strong { font-size: 18px; font-weight: 500; color: var(--ink, #1D1D1B); }
/* описания этапов видны всегда (высота списка не меняется, CLS 0), неактивные приглушены */
.k3s-steps button span { font-size: 14.5px; line-height: 1.45; opacity: .55; transition: opacity .3s; }
.k3s-steps button.on span { opacity: 1; }
.k3s-steps button.on strong { color: var(--ink, #1D1D1B); }
.k3s-steps button.on::before { content: ''; position: absolute; left: -1px; top: -1px; height: 2px; width: 100%; background: var(--red, #FE3725); transform-origin: 0 0; }
.k3s-steps button.done b { color: var(--muted, #565B5E); }

@media (max-width: 1100px) {
  .k3s .k3s-grid, .k3s .k3s-grid.flip { column-gap: 32px; }
}
@media (max-width: 820px) {
  .k3s .k3s-grid, .k3s .k3s-grid.flip { grid-template-columns: minmax(0, 1fr); row-gap: 24px; }
  .k3s .k3s-grid.flip .k3d-st { order: 0; }
  .k3s-side { gap: 20px; }
  .k3s-chips button { min-height: 42px; padding: 0 14px 0 10px; font-size: 13.5px; }
  .k3s-chips button.nosw { padding-left: 14px; }
  .k3d-hint { bottom: 10px; font-size: 12px; }
  .k3d-tag { left: 10px; top: 10px; }
}
@media (prefers-reduced-motion: reduce) {
  .k3d-cv, .k3d-poster, .k3d-hint, .k3d-lbl { transition: none; }
  .k3d-hint { animation: none; opacity: 1; }
}
.k3s .k3s-grid.half { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
@media (max-width: 820px) { .k3s .k3s-grid.half { grid-template-columns: minmax(0, 1fr); } }

/* ёлочная игрушка: 3D поверх схемы примерки (ny), схема прячется, только когда 3D готово */
.tr-stage .k3d-ny { position: absolute; inset: 0; z-index: 1; margin: 0; }
.k3d-ny .k3d-poster { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; }
.tr-stage.k3d-on .ball { visibility: hidden; }
.tr-stage.k3d-on .tr-sch { color: rgba(255, 255, 255, .72); }
.tr-panel .tgl + .tgl { margin-left: 8px; }
@media (max-width: 820px) { .k3s-note { min-height: 4.5em; } }
.k3d-ny .k3d-open { left: auto; right: 14px; bottom: auto; top: 14px; transform: none; }