:root {
  color-scheme: only light;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-width: 320px;
  margin: 0;
}

.page {
  min-height: 100vh;
  background: #5d8286;
}

.page__main {
  width: 100%;
}

.family-tree {
  width: 100%;
  overflow: hidden;
  background: #5d8286;
}

.family-tree__viewport {
  position: relative;
  width: min(100%, 1155px);
  margin-inline: auto;
  overflow: hidden;
}

.family-tree__scene {
  position: relative;
  width: 100%;
  aspect-ratio: 1155 / 948;
  container-type: inline-size;
  background-image: url("../img/yusupov-tree.svg");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 100% 100%;
}

.family-tree__zoom,
.family-tree__close {
  position: absolute;
  z-index: 10;
  display: none;
  padding: 0;
  border: 0;
  color: #fff7e4;
  background: transparent;
  cursor: pointer;
}

.family-tree__zoom {
  top: 50%;
  left: 50%;
  width: 41px;
  height: 41px;
  transform: translate(-50%, -50%);
}

.family-tree__zoom-icon {
  display: block;
  width: 41px;
  height: 41px;
}

.family-tree__close {
  position: fixed;
  top: max(16px, env(safe-area-inset-top));
  right: max(16px, env(safe-area-inset-right));
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 247, 228, 0.7);
  border-radius: 50%;
  font: 300 34px/38px Arial, Helvetica, sans-serif;
}

.family-tree__zoom:focus-visible,
.family-tree__close:focus-visible {
  outline: 2px solid #fff7e4;
  outline-offset: 4px;
}

.tree-node {
  --node-size: 60;
  --node-gap: 16;
  --label-width: 180;
  position: absolute;
  z-index: 2;
  top: var(--node-y);
  left: var(--node-x);
  width: calc(var(--node-size) / 11.55 * 1cqi);
  height: calc(var(--node-size) / 11.55 * 1cqi);
  transform: translate(-50%, -50%);
}

.tree-node--large {
  --node-size: 100;
}

.tree-node__link {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  color: #e2d3b2;
  text-decoration: none;
}

.tree-node__media {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border-radius: 50%;
  background: #48696e;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.tree-node__media img {
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.tree-node__image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}

.tree-node__name {
  position: absolute;
  width: calc(var(--label-width) / 11.55 * 1cqi);
  font-family: Arial, Helvetica, sans-serif;
  font-size: calc(16 / 11.55 * 1cqi);
  font-weight: 500;
  line-height: 1.12;
  color: #FFF7E4;
  overflow-wrap: normal;
}

.tree-node--text-right .tree-node__name {
  top: 50%;
  left: calc(100% + var(--node-gap) / 11.55 * 1cqi);
  transform: translateY(-50%);
  text-align: left;
  max-width: 150px;
}

.tree-node--text-left .tree-node__name {
  top: 50%;
  right: calc(100% + var(--node-gap) / 11.55 * 1cqi);
  transform: translateY(-50%);
  text-align: right;
  max-width: 140px;
}

.tree-node--text-top .tree-node__name {
  bottom: calc(100% + var(--node-gap) / 11.55 * 1cqi);
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
}

.tree-node--text-bottom .tree-node__name {
  top: calc(100% + var(--node-gap) / 11.55 * 1cqi);
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
}

.tree-node--active .tree-node__link {
  cursor: pointer;
}

.tree-node--active .tree-node__link:hover .tree-node__media img,
.tree-node--active .tree-node__link:focus-visible .tree-node__media {
  transform: scale(1.1);
}

.tree-node--active .tree-node__link:focus-visible {
  outline: none;
}

.tree-node--inactive {
  pointer-events: none;
  filter: contrast(0.5);
}

.page--tree-open {
  overflow: hidden;
  overscroll-behavior: none;
}

.family-tree__viewport--fullscreen {
  position: fixed;
  z-index: 1000;
  inset: 0;
  width: 100%;
  max-width: none;
  height: 100dvh;
  margin: 0;
  overflow: hidden;
  background: #5d8286;
  cursor: grab;
  touch-action: none;
  user-select: none;
  overscroll-behavior: none;
}

.family-tree__viewport--fullscreen.family-tree__viewport--dragging {
  cursor: grabbing;
}

.family-tree__viewport--fullscreen .family-tree__scene {
  position: absolute;
  top: 0;
  left: 0;
  width: 1100px;
  max-width: none;
  margin: 0;
  will-change: transform;
}

.family-tree__viewport--fullscreen .family-tree__zoom {
  display: none;
}

.family-tree__viewport--fullscreen .family-tree__close {
  display: block;
}

.family-tree__viewport--fullscreen .tree-node__link,
.family-tree__viewport--fullscreen .tree-node__image {
  -webkit-user-drag: none;
}

@media (max-width: 500px) {
  .family-tree__zoom {
    display: block;
  }
}

@media (prefers-reduced-motion: reduce) {
  .tree-node__media {
    transition: none;
  }
}

.page-about .about__map {
  display: flex;
  align-items: center;
}

/*
 * На странице «О нас» карта вложена в горизонтальный track. Его transform и
 * z-index родителя создают containing/stacking context, из-за которого fixed
 * viewport позиционируется относительно секции и не может перекрыть страницу.
 */
@media (max-width: 500px) {
  html:has(body.page-about.page--tree-open),
  body.page-about.page--tree-open {
    width: 100%;
    height: 100% !important;
    max-height: 100% !important;
    overflow: hidden !important;
    overscroll-behavior: none;
  }

  body.page-about.page--tree-open .p_content,
  body.page-about.page--tree-open .about,
  body.page-about.page--tree-open .about__pin,
  body.page-about.page--tree-open .about__sticky,
  body.page-about.page--tree-open .about__track,
  body.page-about.page--tree-open .about__panel--people,
  body.page-about.page--tree-open .about__map--interactive,
  body.page-about.page--tree-open .family-tree {
    overflow: visible !important;
  }

  body.page-about.page--tree-open .about__track {
    transform: none !important;
    will-change: auto;
    backface-visibility: visible;
  }

  body.page-about.page--tree-open .about__panel--people,
  body.page-about.page--tree-open .about__map--interactive,
  body.page-about.page--tree-open .family-tree {
    z-index: auto !important;
  }

  body.page-about.page--tree-open .family-tree__viewport--fullscreen {
    position: fixed !important;
    z-index: 10000;
    inset: 0 !important;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    max-width: none;
    max-height: none;
  }
}