:root {
  --bg: #f7f9fc;
  --panel: #ffffff;
  --text: #111827;
  --muted: #667085;
  --accent: #4f8cff;
  --accent-2: #50e3c2;
  --warning: #ffb020;
  --danger: #ff5a6b;
  --gap: 10px;
  --board-size: min(82vmin, 420px);
  --cell-radius: 8px;
  --cell-border: 2px;
  --shadow-sm: 0 6px 16px rgba(0,0,0,.12);
  --shadow-md: 0 10px 30px rgba(0,0,0,.18);
  --game-gap: 16px;
  --title-center-offset: 0px;
  --controls-center-offset: 0px;
  --tagline-size: 16px;
  --board-label-size: 12px;
  --tagline-color: var(--muted);
  --tagline-offset-x: 0px;
  --tagline-offset-y: -4px;
  --main-btn-height: 34px;
  --logo-buttons-gap: 36px;
  --piece-percent-desktop: 0.081;
  --piece-percent-mobile: 0.081;
  --pool-frame-shadow: none;
  --pool-frame-shadow-over: none;
  --board-label-offset-top: 0px;
  --board-label-offset-side: 4px;

  --onboard-tile-radius: 8px;

  --c1: #FF4D6D;
  --c2: #00C389;
  --c3: #FFC83D;
  --c4: #00A3C4;
  --c5: #FF006E;
  --c6: #7B61FF;

  --c1h: var(--c4);
  --c2h: var(--c5);
  --c3h: var(--c6);
  --c4h: var(--c1);
  --c5h: var(--c2);
  --c6h: var(--c3);

  --share-color: var(--c6);
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
}
#app { min-height: 100%; display: grid; }
.screen { display: none; min-height: 100%; }
.screen.active { display: grid; }
#start-screen .center {
  margin: auto;
  text-align: center;
  padding: 24px;
}
#start-screen h1 { font-size: clamp(28px, 4vw, 48px); margin: 0 0 8px; }
.subtitle { color: var(--muted); margin: 6px 0 0; }
#howto-screen { grid-template-rows: auto 1fr; }
.screen-header { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 8px; padding: 12px 16px; }
.screen-header .left { justify-self: start; }
.screen-header .center { justify-self: center; }
.screen-header .right { justify-self: end; }
.title { margin: 0; font-size: clamp(18px, 2.2vw, 28px); color: var(--muted); margin-inline-end: var(--title-center-offset); display: inline-grid; width: max-content; justify-items: center; }
#howto-screen .content { max-width: 880px; margin: 0 auto; padding: 12px 20px 40px; }
.rules { line-height: 1.5; color: var(--muted); }
.rules li { margin: 10px 0; }
.top-bar { display: grid; justify-content: center; row-gap: 8px; padding: 12px 16px 0; }
.header-top { display: grid; grid-auto-flow: column; align-items: center; gap: var(--logo-buttons-gap, 16px); justify-content: center; }
.top-controls { display: grid; grid-auto-flow: column; gap: 8px; margin-inline-start: var(--controls-center-offset); }
.top-bar .subtitle { text-align: center; }
.top-controls .btn { background: #ffffff; color: var(--text); min-height: var(--main-btn-height, 44px); border: 1px solid rgba(0,0,0,0.08); }
.title .tagline { display: block; font-weight: 700; font-size: var(--tagline-size); color: var(--tagline-color); margin-top: var(--tagline-offset-y); transform: translateX(var(--tagline-offset-x)); }
#game-screen { grid-template-rows: auto 1fr; }
.game-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: var(--game-gap);
  justify-content: center;
  align-items: start;
  padding: 34px 16px 24px;
}
.top-controls details.dropdown { position: relative; }
details.dropdown > summary.btn { list-style: none; cursor: pointer; }
details.dropdown > summary::-webkit-details-marker { display: none; }
details.dropdown .dropdown-menu {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  background: #fff;
  border: 1px solid rgba(0,0,0,0.1);
  border-radius: 10px;
  box-shadow: var(--shadow-md);
  padding: 6px;
  display: grid;
  gap: 6px;
  z-index: 1000;
  width: max-content;
  white-space: nowrap;
  list-style: none;
  margin: 0;
}
details.dropdown .dropdown-menu > li { list-style: none; margin: 0; padding: 0; }
details.dropdown .dropdown-item {
  appearance: none;
  border: 0;
  background: transparent;
  padding: 8px 10px;
  border-radius: 8px;
  font-weight: 700;
  color: var(--text);
  cursor: pointer;
  text-align: left;
}
details.dropdown .dropdown-item:hover { background: rgba(0,0,0,0.04); }

#contact-menu > .dropdown-menu {
  left: auto;
  right: 0;
}

.board-wrap { position: relative; display: grid; place-items: center; }

.board-header-row {
  position: relative;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  pointer-events: none;
  margin-bottom: 4px;
}

.board-label {
  pointer-events: auto;
  background: transparent;
  color: var(--tagline-color);
  font-weight: 700;
  font-size: var(--board-label-size);
  padding: 0;
  border-radius: 0;
}

.win-top{
  flex: 1 1 auto;
  text-align: center;
  font-weight: 700;
  font-size: 18px;
  color: var(--tagline-color);
  pointer-events: none;
}

.win-top-dropdown { position: relative; pointer-events: auto; }
.win-top-dropdown > summary.win-top { cursor: pointer; pointer-events: auto; }
.win-top-dropdown > summary.win-top:focus { outline: none; }
.win-top-dropdown > .dropdown-menu {
  left: 50%;
  transform: translateX(-40%);
  right: auto;
}

.board-stack{
  position: relative;
  width: var(--board-size);
  height: var(--board-size);
}
.pieces-layer{
  position: absolute;
  inset: 0;
}

#seed-counter {
  text-align: left;
  padding-left: var(--board-label-offset-side);
}

#move-counter {
  text-align: right;
  padding-right: var(--board-label-offset-side);
}

.board {
  width: var(--board-size);
  height: var(--board-size);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  grid-template-rows: repeat(5, 1fr);
  gap: var(--gap);
  background: linear-gradient(180deg, #ffffff, #f5f7fb);
  padding: var(--gap);
  border-radius: 14px;
  box-shadow: var(--shadow-md);
  position: relative;
  z-index: 1;
}
.cell {
  position: relative;
  border-radius: var(--cell-radius);
  background: rgba(0,0,0,0.03);
  outline: var(--cell-border) solid rgba(0,0,0,0.08);
  overflow: hidden;
  aspect-ratio: 1 / 1;
}
.cell.dropzone { transition: outline-color .2s, background-color .2s; }
.cell.dropzone.over { outline-color: rgba(0,0,0,0.1); background-color: rgba(0,0,0,0.04); }
.pieces-layer {
  position: absolute;
  width: var(--board-size);
  height: var(--board-size);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  grid-template-rows: repeat(5, 1fr);
  gap: var(--gap);
  padding: var(--gap);
  pointer-events: none;
  z-index: 2;
}
.piece {
  pointer-events: auto;
  user-select: none;
  -webkit-user-drag: element;
  display: grid;
  grid-template-columns: repeat(var(--cols, 5), 1fr);
  grid-template-rows: repeat(var(--rows, 1), 1fr);
  border-radius: 0;
  color: #111315;
  font-weight: 900;
  letter-spacing: 1px;
  text-shadow: 0 1px 0 rgba(255,255,255,.4);
  cursor: grab;
  box-shadow: none;
  transition: transform .12s ease-out, box-shadow .12s ease-out, opacity .12s ease-out;
  overflow: visible;
  background: transparent;
}
.piece:active { cursor: grabbing; transform: translateY(1px); }
.piece.preview {
  pointer-events: none;
  opacity: 0.55;
  box-shadow: none;
}
.pool .piece { background: transparent; overflow: visible; }

.piece-cell{
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.piece-cell .shine{
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  z-index: 1;
}

.piece-cell .char{ position: relative; z-index: 2; }

.piece-cell { display: grid; place-items: center; border-radius: var(--cell-radius); }
.pieces-layer .piece-cell .char,
.piece.preview .piece-cell .char {
  font-size: calc(
    var(--board-mobile-size, var(--board-size))
    / var(--grid-size)
    * var(--font-k, 0.25)
  );
  line-height: 1;
}
.piece-hole { background: transparent; }

.pieces-layer .piece.placed .piece-cell,
.pieces-layer .piece.preview .piece-cell{
  overflow: visible;
}

.pieces-layer .piece.placed .piece-cell.has-r::after,
.pieces-layer .piece.preview .piece-cell.has-r::after{
  content: "";
  position: absolute;
  left: 100%;
  top: 10%;
  width: var(--gap);
  opacity: 0.5;
  height: 80%;
  background: inherit;
  border-radius: 0;
  z-index: 2;
  pointer-events: none;
}

.pieces-layer .piece.placed .piece-cell.has-d::before,
.pieces-layer .piece.preview .piece-cell.has-d::before{
  content: "";
  position: absolute;
  top: 100%;
  left: 10%;
  width: 80%;
  height: var(--gap);
  background: inherit;
  opacity: 0.5;
  border-radius: 0;
  z-index: 2;
  pointer-events: none;
}

.pieces-layer .piece.placed .piece-cell,
.pieces-layer .piece.preview .piece-cell{
  border-radius: var(--onboard-tile-radius);
  box-shadow: none;
}

.board-stack { position: relative; }

.word-outline-layer{
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 9;
}

.word-outline{
  position: absolute;
  left: var(--gap);
  width: calc(100% - (2 * var(--gap)));
  --cell: calc((100% - (2 * var(--gap)) - (var(--gap) * (var(--grid-size, 5) - 1))) / var(--grid-size, 5));
  --cell-px: calc(var(--board-mobile-size, var(--board-size)) / var(--grid-size, 5));
  height: var(--cell);
  pointer-events: none;
}

.word-outline::after{
  content: "";
  position: absolute;
  inset: calc(var(--cell-px) * var(--outline-inset-k, 0.12));
  border-radius: 14px;
  border: 3px dashed rgba(0,0,0,0.65);
  box-sizing: border-box;
}

.pool {
  border-radius: 12px;
  box-shadow: var(--pool-frame-shadow, inset 0 0 0 2px rgba(0,0,0,0.12));
}
@media (min-width: 961px) {
  #pool-left, #pool {
    --pool-gap: 6px;
    --pool-cell: calc(var(--board-size) * var(--piece-percent-desktop, 0.081));
    --pool-min-cols-desktop: 5;

    height: var(--board-size);
    display: grid;
    grid-auto-flow: column;
    grid-auto-rows: var(--pool-cell);
    grid-auto-columns: var(--pool-cell);
    grid-template-rows: repeat(auto-fill, var(--pool-cell));
    gap: var(--pool-gap);
    width: max-content;
    min-width: calc(
      var(--pool-cell) * var(--pool-min-cols-desktop)
      + var(--pool-gap) * (var(--pool-min-cols-desktop) - 1)
    );
    align-content: start;
    overflow: visible;
  }
  #pool-left { justify-self: end; }
  #pool { justify-self: start; }
}
@media (min-width: 961px) {
  #pool-left { justify-content: end; }
}
.pool.dropzone.over { box-shadow: var(--pool-frame-shadow-over, inset 0 0 0 2px rgba(79,140,255,0.6)); }
.pool .piece {
  width: 100%;
  height: 100%;
  grid-column: span var(--cols);
  grid-row: span var(--rows);
}
.pool .piece-cell .char { font-size: 16px; }
.side { display: grid; align-content: start; gap: 12px; }
.controls { display: grid; gap: 8px; background: var(--panel); padding: 12px; border-radius: 10px; box-shadow: var(--shadow-sm); border: 1px solid rgba(0,0,0,0.06); }
.pool-title { margin: 0 0 6px 0; color: var(--muted); font-weight: 600; }
.btn { appearance: none; border: 1px solid rgba(0,0,0,0.1); border-radius: 10px; padding: 10px 14px; color: var(--text); background: #ffffff; cursor: pointer; font-weight: 700; box-shadow: var(--shadow-sm); }
.btn:hover { filter: brightness(0.98); }
.btn:active { transform: translateY(1px); }
.btn.primary { background: linear-gradient(180deg, var(--accent), #2d69ff); color: white; border-color: transparent; }
.btn.ghost { background: transparent; border: 1px solid rgba(0,0,0,0.2); color: var(--text); }
.btn-row { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.modal { position: fixed; inset: 0; display: grid; place-items: center; background: rgba(0,0,0,.35); opacity: 0; pointer-events: none; transition: opacity .15s; z-index: 9999; }
.modal.show { opacity: 1; pointer-events: auto; }
.modal-card { background: #ffffff; border: 1px solid rgba(0,0,0,0.12); border-radius: 14px; padding: 20px; min-width: 260px; max-width: 600px; max-height: 90vh; overflow: auto; box-shadow: var(--shadow-md); }
.modal-card h2 { margin: 0 0 6px; }
.modal-card p { color: var(--muted); margin: 0 0 16px; }
.modal-actions { margin-top: 12px; text-align: right; }
.share-panel { display: grid; gap: 14px; }
.share-preview-wrap { display: grid; place-items: center; }
.pattern-preview {
  --cell: 30px;
  --gap: 4px;
  display: grid;
  grid-template-columns: repeat(5, var(--cell));
  grid-template-rows: repeat(5, var(--cell));
  gap: var(--gap);
  padding: var(--gap);
  background: #ffffff;
  border-radius: 12px;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,0.08);
}
.pattern-preview .sq { width: var(--cell); height: var(--cell); border-radius: 6px; box-shadow: inset 0 0 0 1px rgba(0,0,0,0.06); }
.actions.share-actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; }
.share-row { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 10px; }
.share-label { color: var(--text); font-weight: 700; }
.share-buttons {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 12px;
    }
    .share-buttons a {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 48px;
      height: 48px;
      border-radius: 50%;
      color: #fff;
      text-decoration: none;
      font-size: 22px;
      transition: opacity 0.2s;
    }
    .share-buttons a:hover {
      opacity: 0.8;
    }
    .facebook   { background: #3b5998; }
    .twitter    { background: #000000; }
    .linkedin   { background: #0077b5; }
    .pinterest  { background: #bd081c; }
    .reddit     { background: #ff4500; }
    .whatsapp   { background: #25d366; }
    .telegram   { background: #0088cc; }
    .email      { background: #666666; }

.contact-dropdown > summary.btn {
  padding: 0 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hamburger {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 3px;
  width: 18px;
  height: 14px;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
}

.date-picker {
  position: absolute;
  width: 280px;
  background: #ffffff;
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.15);
  padding: 10px 12px 14px;
  box-sizing: border-box;
  user-select: none;
  z-index: 999;
}
.dp-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 4px 8px;
}
.dp-month-year {
  display: flex;
  align-items: baseline;
  gap: 4px;
  font-weight: 500;
}
.dp-month {
  font-size: 16px;
}
.dp-year {
  font-size: 15px;
  color: #666;
}
.nav-btn {
  border: none;
  background: transparent;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: #555;
}
.nav-btn:hover {
  background: #f0f0f0;
}
.dp-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  font-size: 11px;
  color: #999;
  padding: 4px 2px 2px;
}
.dp-weekdays div {
  padding: 4px 0;
}
.dp-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  grid-auto-rows: 34px;
  padding: 2px;
  margin-bottom: 8px;
}
.dp-day {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  cursor: pointer;
  position: relative;
}
.dp-day span {
  width: 28px;
  height: 28px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.dp-day:hover span {
  background: #f0f4ff;
}
.dp-day--other-month {
  color: #c5c5c5;
}
.dp-day--today span {
  border: 1px solid #2171ff;
}
.dp-day--selected span {
  background: #2171ff;
  color: #ffffff;
}
.today-btn {
  padding: 8px 24px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  background: #2171ff;
  color: white;
  display: block;
  margin: 6px auto 0;
  width: auto;
}
.today-btn:hover {
  filter: brightness(1.05);
}

@media (max-width: 600px) {
  .contact-dropdown > summary.btn {
    flex: 0 0 auto;
    min-width: 0;
  }
}

@media (max-width: 960px) {
  .game-wrap { grid-template-columns: 1fr; }
  #pool-left { display: none; }
  .pattern-preview { --cell: 24px; --gap: 5px; }
  #pool.pool {
    --pool-gap: 6px;
    --pool-ref-size: var(--board-mobile-size, var(--board-size));
    --pool-cell: calc(var(--pool-ref-size) * var(--piece-percent-mobile, var(--piece-percent-desktop, 0.081)));

    width: var(--pool-ref-size);
    max-width: var(--pool-ref-size);
    display: grid;
    justify-content: start;
    grid-auto-flow: dense;

    grid-template-columns: repeat(var(--pool-cols-mobile, 10), var(--pool-cell));
    grid-auto-columns: var(--pool-cell);
    grid-auto-rows: var(--pool-cell);
    gap: var(--pool-gap);
  }
}
@media (max-width: 600px) {
  :root { --board-mobile-margin: 12px; }
  .game-wrap { grid-template-columns: 1fr; padding: 12px var(--board-mobile-margin) 16px; gap: 12px; }
  .board-wrap { width: 100%; }
  .board,
  .pieces-layer {
    width: calc(100vw - 2 * var(--board-mobile-margin));
    height: calc(100vw - 2 * var(--board-mobile-margin));
  }
  .pool { justify-content: center; }
}
@media (max-width: 600px) {
  :root {
    --board-mobile-margin: 18px;
    --board-mobile-size: calc(100vw - 2 * var(--board-mobile-margin));
  }

  .game-wrap {
    grid-template-columns: 1fr;
    justify-items: center;
    align-items: start;
    padding: 12px var(--board-mobile-margin) 16px;
    gap: 12px;
  }

  .board-wrap {
    width: var(--board-mobile-size);
    margin-bottom: 12px;
  }

  .board,
  .pieces-layer {
    width: var(--board-mobile-size);
    height: var(--board-mobile-size);
  }

  #pool.pool {
    --pool-cols-mobile: 10;
    --pool-gap: 6px;

    width: var(--board-mobile-size);
    margin: 0;
    display: grid;
    justify-content: start;
    grid-auto-flow: dense;

    --pool-cell: calc(var(--board-mobile-size) * var(--piece-percent-mobile, var(--piece-percent-desktop, 0.081)));

    grid-template-columns: repeat(var(--pool-cols-mobile), var(--pool-cell));
    grid-auto-columns: var(--pool-cell);
    grid-auto-rows: var(--pool-cell);
    gap: var(--pool-gap);

    max-width: var(--board-mobile-size);
    overflow-x: clip;
  }

  .pool .piece-cell .char { font-size: 14px; }
}
@media (max-width: 600px) {
  :root {
    --pool-under-gap: 6px;
  }

  .game-wrap {
    grid-template-columns: 1fr;
    row-gap: var(--pool-under-gap);
    column-gap: var(--game-gap, 16px);
    padding: 12px var(--board-mobile-margin, 12px) 16px;
    justify-items: center;
    align-items: start;
  }

  .board-wrap { margin-bottom: 0; }

  #pool.pool {
    width: var(--board-mobile-size);
    max-width: var(--board-mobile-size);
  }
}
@media (max-width: 600px) {
  :root{
    --pool-under-gap: 0px;
    --pool-under-nudge: 0px;
  }

  .game-wrap{
    grid-template-columns: 1fr !important;
    row-gap: var(--pool-under-gap) !important;
    column-gap: var(--game-gap, 16px);
    padding-bottom: 0 !important;
  }
  .board-wrap{
    margin-bottom: 0 !important;
    padding-bottom: 0 !important;
  }
  #pool.pool{
    margin-top: 0 !important;
    padding-top: 0 !important;
    transform: translateY(var(--pool-under-nudge));
  }

  .board,
  .pieces-layer{
    margin: 0 !important;
  }

  .top-controls details.dropdown { flex: 1 1 0; }
  .top-controls details.dropdown > summary.btn { width: 100%; }
}
html { -webkit-text-size-adjust: 100%; }

button, .btn, a, .top-controls { touch-action: manipulation; }

button, .btn { font-size: 16px; line-height: 1.2; }
html { -webkit-text-size-adjust: 100%; }

button, .btn, a, .top-controls { touch-action: manipulation; }

@media (max-width: 380px) {
  .top-bar { padding-left: 12px; padding-right: 12px; }
  .header-top { 
    grid-auto-flow: row;
    justify-items: center;
    row-gap: 8px;
    max-width: 100%;
  }

  .title {
    width: 100%;
    max-width: 100%;
    overflow-wrap: anywhere;
  }

  .top-controls {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    max-width: 100%;
  }
  .top-controls .btn {
    font-size: 16px;
    flex: 1 1 auto;
    min-width: 120px;
  }

  html, body { overflow-x: hidden; }
}
@media (max-width: 600px) {
  .header-top {
    display: grid;
    grid-auto-flow: row;
    justify-items: center;
    row-gap: 10px;
  }

  .title { text-align: center; }

  .top-controls {
    width: var(--board-mobile-size);
    max-width: var(--board-mobile-size);
    margin: 0 auto;

    display: flex;
    flex-wrap: nowrap;
    justify-content: center;
    align-items: stretch;
    gap: 8px;
  }

  .top-controls .btn {
    flex: 1 1 0;
    min-width: 0;
    height: var(--main-btn-height, 34px);
    line-height: 1.2;
    font-size: 16px;
  }
}
@media (max-width: 600px) {
  .top-controls .btn {
    display: flex;
    align-items: center;
    justify-content: center;

    padding: 0 8px;

    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;

    line-height: 1.05;
    font-size: clamp(12px, 3.2vw, 16px);
  }
}

@media (max-width: 360px) {
  .top-controls .btn {
    font-size: clamp(11px, 3.6vw, 15px);
  }
}

@media (max-width: 600px) {
  :root { --modal-mobile-width: var(--board-mobile-size); }
  .modal-card {
    min-width: 0;
    width: var(--modal-mobile-width);
    max-width: var(--modal-mobile-width);
    box-sizing: border-box;
  }
}

:root {
  --mobile-pool-distance-percent: 3;
}
@media (max-width: 960px) {
  .game-wrap { row-gap: 0 !important; align-content: start !important; }
  .board-wrap { margin-bottom: 0 !important; }
  #pool.pool {
    margin-top: calc(
      var(--board-mobile-size, var(--board-size)) * var(--mobile-pool-distance-percent, 3) / 100
    ) !important;
  }
}

#btn-calendar .material-symbols-outlined {
  font-size: 20px;
  line-height: 1;
  color: #000;
  font-variation-settings:
    'FILL' 0,
    'wght' 400,
    'GRAD' 0,
    'opsz' 24;
}

.top-controls .btn {
  height: var(--main-btn-height);
  min-height: var(--main-btn-height);
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

#btn-calendar .material-symbols-outlined {
  font-size: 18px;
  line-height: 1;
  display: block;
}

.hamburger {
  display: grid;
  gap: 4px;
}

.hamburger span {
  width: 18px;
  height: 2px;
}

@media (max-width: 960px) {
  .board-header-row{
    width: var(--board-mobile-size, var(--board-size));
    max-width: var(--board-mobile-size, var(--board-size));
    margin: 0 auto 6px;
  }
  #seed-counter,
  #move-counter{
    position: static;
    bottom: auto;
    left: auto;
    width: auto;
    max-width: none;
    pointer-events: none;
  }

  #seed-counter { padding-left: 0; }
  #move-counter { padding-right: 0; }
}

@media (max-width: 960px) {
  .board-wrap {
    display: grid;
    grid-template-rows: auto auto;
    justify-items: center;
    align-items: start;
    place-items: initial;
  }

  .board-header-row {
    grid-row: 1;
    width: 100%;
    max-width: var(--board-mobile-size, var(--board-size));
    margin: 0 auto 6px;
  }

  #seed-counter,
  #move-counter {
    position: static;
    bottom: auto;
    left: auto;
    width: auto;
    max-width: none;
    pointer-events: none;
  }

  #seed-counter { padding-left: 0; }
  #move-counter { padding-right: 0; }

  #board {
    grid-row: 2;
    grid-column: 1;
  }

  #pieces-layer {
    grid-row: 2;
    grid-column: 1;
    position: relative;
  }
}

@media (max-width: 960px) {
  #btn-new,
  #btn-howto-game {
    flex: 1 1 auto;
    min-width: 0;
  }

  #btn-calendar {
    flex: 0 0 var(--main-btn-height, 34px);
    width: var(--main-btn-height, 34px);
    padding: 0;
  }
}

@media (max-width: 600px) {
  #btn-howto-game {
    font-size: 12px;
  }
}

@media (max-width: 960px) {

  #btn-new,
  #btn-howto-game {
    flex: 1 1 auto;
    min-width: 0;
  }
  #size-select > summary.btn {
    flex: 0 0 auto;
    width: auto;
    padding: 0 10px;
    white-space: nowrap;
  }

  #btn-calendar {
    flex: 0 0 var(--main-btn-height, 34px);
    width: var(--main-btn-height, 34px);
    padding: 0;
  }
}

  .board-stack{
    grid-row: 2;
    grid-column: 1;
    width: var(--board-mobile-size, var(--board-size));
    height: var(--board-mobile-size, var(--board-size));
  }

  #pieces-layer{
    position: absolute !important;
    inset: 0;
  }
.board{
  width: 100%;
  height: 100%;
}

.pieces-layer{
  position: absolute;
  inset: 0;
}

@media (min-width: 521px) {
  .board-header-row{
    width: var(--board-size);
    max-width: var(--board-size);
    margin: 0 auto 6px;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  #seed-counter,
  #move-counter{
    position: static;
    width: auto;
    max-width: none;
    padding: 0;
    pointer-events: none;
    flex: 0 0 auto;
  }

  #win-top{
    flex: 1 1 auto;
    text-align: center;
  }
}
.board-header-row{
  min-height: 24px;
}

#win-top{
  opacity: 0;
  visibility: hidden;
  transition: opacity .15s ease;
}

#win-top.is-visible{
  opacity: 1;
  visibility: visible;
}
#win-top{
  --win-top-pop-scale: 2;
  --win-top-pop-duration: 700ms;

  transform-origin: 50% 55%;
  display: inline-block;
  will-change: transform;
}

#win-top.is-pop{
  animation: winTopPop var(--win-top-pop-duration) cubic-bezier(.2,.9,.2,1) both;
}

@keyframes winTopPop{
  0%   { transform: scale(1); }
  40%  { transform: scale(var(--win-top-pop-scale)); }
  100% { transform: scale(1); }
}

@media (prefers-reduced-motion: reduce){
  #win-top.is-pop{ animation: none; }
}

@media (min-width: 961px) {
  .header-top { margin-bottom: -14px; }
  .game-wrap  { margin-top: -4px; }
}
@media (min-width: 961px) {
  #pool-left,
  #pool {
    transform: translateY(34px);
  }
}
.piece-cell { position: relative; }

.piece-cell .char{
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  line-height: 1;
  z-index: 3;
  transform: translateY(var(--char-optical-shift, -0.04em));
}
.piece,
.piece-cell .char {
  font-family: Calibri, "Segoe UI", system-ui, sans-serif;
}

.piece {
  font-weight: 900;
  letter-spacing: 0.5px;
}
.pieces-layer .piece.placed,
.pieces-layer .piece.preview{
  gap: var(--gap);
}
#win-top-menu > summary {
  list-style: none;
}
#win-top-menu > summary::marker {
  content: "";
}
#win-top-menu > summary::-webkit-details-marker {
  display: none;
}

.win-top {
  font-weight: 700;
  font-size: 18px;
  text-align: center;
  white-space: nowrap;
}

.win-top.is-solved {
  color: inherit;
}

.win-top .char {
  display: inline-block;
}

.win-top .char{
  display: inline-block;
  color: var(--ch, currentColor);
  transition: color 160ms ease, transform 160ms ease;
}

.win-top.is-solved:hover .char{
  color: var(--ch-hover, var(--ch, currentColor));
}
.win-top.is-idle {
  color: var(--share-color);
}
#win-top.is-idle:hover {
  color: var(--c1);
}
.board-header-row{
  width: var(--board-size);
  max-width: var(--board-size);
  margin: 0 auto 6px;

  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;

  position: relative;
}

#seed-counter{
  position: static !important;
  justify-self: start;
  text-align: left;
  padding-left: var(--board-label-offset-side);
}

#move-counter{
  position: static !important;
  justify-self: end;
  text-align: right;
  padding-right: var(--board-label-offset-side);
}

#win-top-menu{
  justify-self: center;
}

@media (max-width: 960px){
  .board-header-row{
    width: var(--board-mobile-size, var(--board-size));
    max-width: var(--board-mobile-size, var(--board-size));
  }

  #seed-counter{ padding-left: 0; }
  #move-counter{ padding-right: 0; }
}

#win-top-menu.win-top-dropdown > .dropdown-menu{
  left: 50%;
  right: auto;
  transform: translateX(-50%);
}

#win-top-menu.win-top-dropdown.is-idle > .dropdown-menu{
  transform: translateX(calc(-40% - 18px));
}

#win-top-menu.win-top-dropdown.is-solved > .dropdown-menu{
  transform: translateX(calc(-60% + 12px));
}
.pieces-layer .piece.placed{
  filter: drop-shadow(0 10px 18px rgba(0,0,0,0.16));
}
.pieces-layer .piece.preview{
  filter: drop-shadow(0 10px 18px rgba(0,0,0,0.10));
}
.piece-cell{
  border-radius: var(--onboard-tile-radius, var(--cell-radius));
  isolation: isolate;
}

.piece-cell .shine{
  position: absolute;
  inset: -10% -30%;
  border-radius: inherit;

  background: linear-gradient(90deg,
    rgba(255,255,255,0),
    rgba(255,245,160,.85),
    rgba(255,255,255,0)
  );

  mix-blend-mode: screen;
  filter: blur(12px);
  opacity: .85;

  pointer-events: none;
  z-index: 1;

  clip-path: inset(0 round var(--onboard-tile-radius, var(--cell-radius)));
}

.piece-cell .char{
  position: relative;
  z-index: 3;
  text-shadow:
    0 1px 0 rgba(255,255,255,.55),
    0 2px 10px rgba(0,0,0,.18);
}
.piece-cell .shine{
  inset: 0;
  overflow: hidden;
  border-radius: inherit;
  background: none;
  filter: none;
  clip-path: none;
}

.piece-cell .shine::before{
  content: "";
  position: absolute;
  inset: -10% -30%;
  border-radius: inherit;

  background: linear-gradient(90deg,
    rgba(255,255,255,0),
    rgba(255,255,255,1),
    rgba(255,255,255,0)
  );

  mix-blend-mode: screen;
  filter: blur(4px);
  opacity: .95;

  pointer-events: none;
}

.pieces-layer .piece,
.pieces-layer .piece.placed,
.pieces-layer .piece.preview{
  filter: none !important;
}
.howto-gif {
  display: flex;
  justify-content: center;
  margin: 16px 0 20px;
}

.howto-gif img {
  max-width: 100%;
  width: 360px;
  height: auto;
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
}
#win-top{
  display: inline-block;
  will-change: transform;
  transform-origin: center center;
}

#win-top.is-pop{
  animation: winTopPop 420ms ease-in-out;
}

@keyframes winTopPop{
  0%   { transform: scale(1); }
  50%  { transform: scale(var(--win-top-pop-scale, 1.18)); }
  100% { transform: scale(1); }
}

.rules .howto-gif{
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  padding: 0;
  margin: 0;
}

#howto-gif-img{
  display: block;
  max-width: 100%;
  height: auto;
}
.rules{
  list-style: none;
  padding-left: 0;
  margin: 0;
}