:root{
  --fg-good-bg: rgba(0, 255, 140, .14);
  --fg-good-br: rgba(0, 255, 140, .45);

  --fg-warn-bg: rgba(255, 200, 0, .14);
  --fg-warn-br: rgba(255, 200, 0, .45);

  --fg-bad-bg: rgba(255,255,255,.02);
  --fg-bad-br: rgba(255,255,255,.14);

  --fg-tile-bg: rgba(255,255,255,.03);
  --fg-tile-br: rgba(255,255,255,.16);

  --fg-tile-hover: rgba(255,255,255,.05);

  --fg-ring: rgba(120,160,255,.55);
  --fg-accent: rgba(255, 60, 60, .55);

  --fgHelpBorder: rgba(255,255,255,.07);
  --fgHelpBg: rgba(255,255,255,.02);
}

:root[data-theme="light"]{
  --fg-good-bg: rgba(0, 160, 90, .22);
  --fg-good-br: rgba(0, 160, 90, .46);

  --fg-warn-bg: rgba(200, 150, 0, .16);
  --fg-warn-br: rgba(200, 150, 0, .40);

  --fg-bad-bg: rgba(11,15,20,.03);
  --fg-bad-br: rgba(11,15,20,.14);

  --fg-tile-bg: rgba(11,15,20,.03);
  --fg-tile-br: rgba(11,15,20,.16);

  --fg-tile-hover: rgba(11,15,20,.05);

  --fg-ring: rgba(60,120,255,.45);
  --fg-accent: rgba(200, 20, 20, .45);

  --fgHelpBorder: rgba(11,15,20,.12);
  --fgHelpBg: rgba(11,15,20,.02);
}

/* tighter wrapping like OpGlyph */
header.wrap { padding-bottom: 6px; }
main.wrap { padding-top: 6px; }

.card.fgCard { padding: 10px 10px 12px; }

@media (max-width:520px){
  .wrap { padding-left: 10px; padding-right: 10px; }
  .card.fgCard { padding: 8px 8px 10px; }
}

.fgTopRow{
  display:flex;
  justify-content:space-between;
  align-items:flex-end;
  gap:10px;
  margin-bottom: 8px;
}

.fgMeta{ display:flex; flex-direction:column; gap:6px; }
.fgHintRow{
  display:flex;
  gap:10px;
  align-items:center;
  flex-wrap:wrap;
}
.fgNext{ font-size: 13px; opacity:.95; }
.fgPenalty{ font-size: 12px; opacity:.75; }

.fgRight{
  text-align:right;
  display:flex;
  flex-direction:column;
  gap:6px;
  align-items:flex-end;
  min-width: 120px;
}
.fgTimer{
  font-size: 26px;
  line-height: 1;
  letter-spacing: .02em;
}
.fgS{ font-size: 14px; opacity:.7; margin-left: 2px; }
.fgMiniMeta{
  display:flex;
  gap:10px;
  font-size: 12px;
  opacity:.9;
}

.fgGridWrap{
  margin-top: 8px;
  display:flex;
  justify-content:center;
}

.fgGrid{
  display:grid;
  gap: clamp(6px, 1.6vw, 10px);
  user-select:none;
  -webkit-user-select:none;
  touch-action: manipulation;
}

.fgTile{
  width:  clamp(52px, 10.8vw, 74px);
  height: clamp(52px, 10.8vw, 74px);
  border-radius: 16px;

  display:flex;
  align-items:center;
  justify-content:center;

  font-size: clamp(18px, 4.8vw, 24px);
  line-height:1;

  border: 1px solid var(--fg-tile-br);
  background: var(--fg-tile-bg);
  cursor:pointer;

  font-weight: 800;
  letter-spacing: .01em;
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease, opacity 120ms ease;
}

.fgTile:hover{ background: var(--fg-tile-hover); transform: translateY(-1px); }
.fgTile:active{ transform: translateY(0px) scale(.98); }

.fgTile.correct{
  background: var(--fg-good-bg);
  border-color: var(--fg-good-br);
  opacity: .65;
  cursor: default;
  transform: none;
}

.fgTile.next{
  outline: 3px solid var(--fg-ring);
  outline-offset: 2px;
}

.fgTile.wrongFlash{
  background: var(--fg-warn-bg);
  border-color: var(--fg-warn-br);
}

.fgActions{
  display:flex;
  justify-content:center;
  gap:10px;
  flex-wrap:wrap;
  margin-top: 12px;
}

/* Shake */
@keyframes fgShake {
  0% { transform: translateX(0); }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
  100% { transform: translateX(0); }
}
.fgGrid.shake{
  animation: fgShake 240ms ease;
}

/* dialogs: thin look like your OpGlyph help */
.fgHelpDlg, .fgStatsDlg, .fgEndDlg{
  padding: 0;
  border: 0;
  background: transparent;

  width: fit-content;
  max-width: calc(100vw - 24px);
  margin: auto;
}
.fgHelpDlg::backdrop,
.fgStatsDlg::backdrop,
.fgEndDlg::backdrop{ background: rgba(0,0,0,.55); }
:root[data-theme="light"] .fgHelpDlg::backdrop,
:root[data-theme="light"] .fgStatsDlg::backdrop,
:root[data-theme="light"] .fgEndDlg::backdrop{ background: rgba(0,0,0,.35); }

.fgHelp, .fgStats, .fgEnd{
  padding: 10px 10px 12px;
  max-width: 560px;
}
.fgHelpScroll{ max-height: 70vh; overflow:auto; padding-right:2px; }

.fgHelpBox{
  border: 1px solid var(--fgHelpBorder);
  background: var(--fgHelpBg);
  border-radius: 12px;
  padding: 9px 10px;
  margin: 8px 0;
}
.fgHelpKicker{
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  opacity: .78;
  margin-bottom: 6px;
}
.fgHelpList{ margin:0; padding-left:18px; }
.fgHelpList li{ margin: 5px 0; }

.fgHelpActions{
  display:flex;
  gap:10px;
  justify-content:flex-end;
  flex-wrap:wrap;
  margin-top:8px;
}

#helpX, #statsX, #endX{ color:#ff4d4d; }
#helpX:hover, #statsX:hover, #endX:hover{ color:#ff6b6b; }

.fgStatsGrid, .fgEndGrid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 8px;
}
@media (max-width:520px){
  .fgStatsGrid, .fgEndGrid{ grid-template-columns: 1fr; }
}

.fgStatBox{
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.02);
  border-radius: 14px;
  padding: 10px 12px;
}
:root[data-theme="light"] .fgStatBox{
  border: 1px solid rgba(11,15,20,.12);
  background: rgba(11,15,20,.02);
}

.fgStatVal{
  font-size: 18px;
  font-weight: 900;
  margin-top: 2px;
}

.fgLast10List{
  display:flex;
  flex-direction:column;
  gap:6px;
}
.fgLast10Row{
  display:flex;
  justify-content:space-between;
  gap:10px;
  border: 1px solid rgba(255,255,255,.08);
  background: rgba(255,255,255,.02);
  border-radius: 12px;
  padding: 8px 10px;
  font-size: 13px;
}
:root[data-theme="light"] .fgLast10Row{
  border: 1px solid rgba(11,15,20,.10);
  background: rgba(11,15,20,.02);
}
.fgLast10Row .muted{ opacity:.75; }

/* Responsive tiles for dense 6x6 */
.fgGrid[data-size="6"] .fgTile{
  width:  clamp(44px, 9.2vw, 62px);
  height: clamp(44px, 9.2vw, 62px);
  border-radius: 14px;
}
@media (max-width:420px){
  .fgGrid[data-size="6"] .fgTile{
    width:  clamp(40px, 9.6vw, 56px);
    height: clamp(40px, 9.6vw, 56px);
    border-radius: 13px;
  }
}

.fgTile.correct{
  box-shadow: inset 0 0 0 999px var(--fg-good-bg);
}