:root {
  --space: 10px;
  --bg: #faf9f6;
  --cell-bg: #faf9f6;
  --text-color: #333;
  --font-size: 20px;
  --line-color: #ccc;
}

* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  font-size: var(--font-size);
  background: var(--bg);
  color: var(--text-color);
}
body {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

@font-face {
  font-family: "NameFont";
  src: url("Name-Regular.woff2") format("woff2");
  font-weight: normal;
  font-style: normal;
}

/* вертикальні роздільники лише для index.html */
body:not(.index) .inner::before,
body:not(.index) .inner::after,
body:not(.index) .grid .vline {
  display: none !important;
}
/* Семантична обгортка для основного контенту */
main {
  flex: 1; /* займає всю доступну висоту між header і footer */
}

/* Тільки для головної сторінки (body.index) */
body.index main {
  display: flex;
  flex-direction: column;
}

body.index main .grid {
  flex: 1; /* сітка розтягується на весь простір */
}

/* Невидимий заголовок для SEO */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.container {
  flex: 1;
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.inner {
  margin: 40px var(--space);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space);
  position: relative;
}

.grid {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-template-rows: repeat(3, 1fr);
  gap: var(--space);
  position: relative;
}

.cell {
  background: var(--cell-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 400;
  font-size: clamp(1.5em, 15vh, 5em);
  color: var(--text-color);
  user-select: none;
  transition: font-feature-settings 0.1s ease;
  cursor: default;
  font-family: "NameFont", sans-serif;
  text-decoration: none;
}

.cell[href]:hover {
  cursor: pointer;
}

/* Stylistic sets */
.alt-ss01 {
  font-feature-settings: "ss01";
}
.alt-ss02 {
  font-feature-settings: "ss02";
}
.alt-ss03 {
  font-feature-settings: "ss03";
}
.alt-ss04 {
  font-feature-settings: "ss04";
}
.alt-ss05 {
  font-feature-settings: "ss05";
}
.alt-ss06 {
  font-feature-settings: "ss06";
}

.content {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space);
  position: relative;
}

@media (min-width: 769px) {
  .grid::before,
  .grid::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--line-color);
    z-index: 2;
  }
  .grid::before {
    top: calc(33.3333%);
  }
  .grid::after {
    top: calc(66.6666%);
  }

  .grid {
    position: relative;
  }

  .grid .vline {
    position: absolute;
    height: 20px;
    width: 1px;
    background: var(--line-color);
    z-index: 3;
  }
  .grid .vline.l1 {
    left: calc(100% / 6 * 1);
  }
  .grid .vline.l2 {
    left: calc(100% / 6 * 2);
  }
  .grid .vline.l3 {
    left: calc(100% / 6 * 3);
  }
  .grid .vline.l4 {
    left: calc(100% / 6 * 4);
  }
  .grid .vline.l5 {
    left: calc(100% / 6 * 5);
  }

  .grid .vline.r1 {
    top: calc(33.3333% - 20px);
  }
  .grid .vline.r2 {
    top: calc(66.6666% - 20px);
  }
}

@media (max-width: 768px) {
  .grid {
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(6, 1fr);
    background-image: none;
  }

  .cell {
    font-size: clamp(1em, 8vh, 4em);
  }

  .cell:nth-child(1) {
    grid-column: 1;
    grid-row: 1;
  }
  .cell:nth-child(2) {
    grid-column: 1;
    grid-row: 2;
  }
  .cell:nth-child(3) {
    grid-column: 1;
    grid-row: 3;
  }
  .cell:nth-child(4) {
    grid-column: 1;
    grid-row: 4;
  }
  .cell:nth-child(5) {
    grid-column: 1;
    grid-row: 5;
  }
  .cell:nth-child(6) {
    grid-column: 1;
    grid-row: 6;
  }

  .cell:nth-child(7) {
    grid-column: 2;
    grid-row: 1;
  }
  .cell:nth-child(8) {
    grid-column: 2;
    grid-row: 2;
  }
  .cell:nth-child(9) {
    grid-column: 2;
    grid-row: 3;
  }
  .cell:nth-child(10) {
    grid-column: 2;
    grid-row: 4;
  }
  .cell:nth-child(11) {
    grid-column: 2;
    grid-row: 5;
  }
  .cell:nth-child(12) {
    grid-column: 2;
    grid-row: 6;
  }

  .cell:nth-child(13) {
    grid-column: 3;
    grid-row: 1;
  }
  .cell:nth-child(14) {
    grid-column: 3;
    grid-row: 2;
  }
  .cell:nth-child(15) {
    grid-column: 3;
    grid-row: 3;
  }
  .cell:nth-child(16) {
    grid-column: 3;
    grid-row: 4;
  }
  .cell:nth-child(17) {
    grid-column: 3;
    grid-row: 5;
  }
  .cell:nth-child(18) {
    grid-column: 3;
    grid-row: 6;
  }

  .inner::before,
  .inner::after {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--line-color);
    z-index: 3;
    display: block;
    pointer-events: none;
  }

  .inner::before {
    left: calc(100% / 3);
  }
  .inner::after {
    left: calc(100% * 2 / 3);
  }

  .grid::before,
  .grid::after {
    display: none;
  }

  .grid .hline {
    position: absolute;
    width: 20px;
    height: 1px;
    background: var(--line-color);
    z-index: 3;
    pointer-events: none;
  }

  .content {
    grid-template-columns: repeat(3, 1fr);
  }
}