/**
 * Sudoku game: front-end styles for sudoku-game-template.php. The number pad
 * sits under the board at every screen size.
 * Layout and behaviour; the shared look (palette, buttons, console, result
 * card, leaderboard) comes from games-arcade.css, loaded after this file.
 *
 * Feedback colours match every other game: slate = wrong (a mistake), pink
 * corner flag = hint, light pink = shown after Give up or game over.
 */

.sudoku-game-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem 0;
}

.sudoku-game {
  --sdk-accent: #b898ff;
  --sdk-accent-dark: #7c4dff;
  --sdk-ink: #1a1a1a;
  --sdk-muted: #6b6b72;
  --sdk-line: #e6e6ec;
  --sdk-radius: 12px;
  --sdk-given: #1f0766;
  --sdk-entered: #651fff;
  --sdk-wrong: #5a4a9c;
  --sdk-flag: #fc7ed3;
  --sdk-shown: #ffb0e6;
  --sdk-clash: #b0156f;
  font-family: 'Poppins', system-ui, sans-serif;
  color: var(--sdk-ink);
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 2rem;
  align-items: start;
}
.sudoku-game__main { min-width: 0; }
.sudoku-game__main > :last-child { margin-bottom: 3rem; }

.sudoku-game__siderail {
  position: sticky;
  top: 16px;
  align-self: start;
  width: 300px;
  min-height: 600px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
}
.sudoku-game__video-mrec { display: none; }

@media (max-width: 991.98px) {
  .sudoku-game { grid-template-columns: 1fr; }
  .sudoku-game__siderail { display: none; }
  .sudoku-game__video-mrec {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 250px;
    margin: 1.5rem 0;
  }
}

.sudoku-game__intro {
  margin: 0 0 1.5rem;
  font-size: 1.02rem;
  line-height: 1.6;
  color: var(--sdk-ink);
}
.sudoku-game__intro > :first-child { margin-top: 0; }
.sudoku-game__intro > :last-child { margin-bottom: 0; }
.sudoku-game__intro p { margin: 0 0 1rem; }

.sudoku-game__prompt { font-weight: 600; margin: 1.25rem 0 .8rem; }

/* Difficulty picker. */
.sudoku-game__levels {
  display: flex;
  justify-content: center;
  gap: .6rem;
  flex-wrap: wrap;
  margin: 0 0 1.1rem;
}
.sudoku-game__level {
  font: inherit;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .1rem;
  padding: .55rem 1.2rem;
  background: #fff;
  border: 2px solid var(--sdk-line);
  border-radius: var(--sdk-radius);
  cursor: pointer;
  color: var(--sdk-ink);
}
.sudoku-game__level:hover { border-color: var(--sdk-accent); }
.sudoku-game__level.is-selected {
  border-color: var(--sdk-accent-dark);
  background: #f4f0ff;
}
.sudoku-game__level:disabled { opacity: .55; cursor: default; }
.sudoku-game__level-name { font-weight: 700; }
.sudoku-game__level-detail { font-size: .78rem; color: var(--sdk-muted); }

/* Found / timer meta. */
.sudoku-game__meta {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  margin: 0 0 1rem;
  font-size: .9rem;
  color: var(--sdk-muted);
}
.sudoku-game__meta[hidden] { display: none; }
.sudoku-game__meta b { color: var(--sdk-ink); font-variant-numeric: tabular-nums; }

/* Board with the number pad underneath it, at every screen size. */
.sudoku-game__layout {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  width: 100%;
  max-width: 540px;
  margin: 0 auto;
}

.sudoku-game__grid {
  --sdk-line: #b898ff;
  --sdk-thick: #651fff;
  width: 100%;
  max-width: 540px;
  margin: 0 auto;
  display: grid;
  grid-template-rows: repeat(9, 1fr);
  aspect-ratio: 1 / 1;
  border: 3px solid var(--sdk-thick);
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
  user-select: none;
  -webkit-user-select: none;
  outline: none;
}
.sudoku-game__grid:empty { display: none; }
.sudoku-game__row { display: grid; grid-template-columns: repeat(9, 1fr); min-height: 0; }
.sudoku-game__row:not(:last-child) .sudoku-game__cell { border-bottom: 1px solid var(--sdk-line); }
.sudoku-game__cell {
  position: relative;
  font: inherit;
  min-width: 0;
  min-height: 0;
  margin: 0;
  padding: 0;
  display: grid;
  place-items: center;
  background: #fff;
  border: 0;
  border-radius: 0;
  color: var(--sdk-entered);
  font-size: clamp(1.1rem, 5.2vw, 1.85rem);
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: background-color .12s ease;
}
.sudoku-game__cell:not(:last-child) { border-right: 1px solid var(--sdk-line); }
.sudoku-game__cell.is-box-r { border-right: 3px solid var(--sdk-thick); }
.sudoku-game__row:not(:last-child) .sudoku-game__cell.is-box-b { border-bottom: 3px solid var(--sdk-thick); }
.sudoku-game__cell.is-given { color: var(--sdk-given); font-weight: 800; }
.sudoku-game__cell.is-peer { background: #f4efff; }
.sudoku-game__cell.is-same { background: #e4d7ff; }
.sudoku-game__cell.is-selected { background: #b898ff; color: var(--sdk-given); }
.sudoku-game__cell:focus-visible { outline: 3px solid var(--sdk-thick); outline-offset: -3px; z-index: 1; }
.sudoku-game__cell.is-conflict { color: var(--sdk-clash); }
.sudoku-game__cell.is-conflict::before {
  content: '';
  position: absolute;
  left: 22%;
  right: 22%;
  bottom: 12%;
  border-bottom: 3px dotted var(--sdk-clash);
}
/* On the lilac selected square the clash mark turns deep purple to keep its contrast. */
.sudoku-game__cell.is-selected.is-conflict { color: var(--sdk-given); }
.sudoku-game__cell.is-selected.is-conflict::before { border-color: var(--sdk-given); }
.sudoku-game__cell.is-wrong { background: var(--sdk-wrong); color: #fff; }
.sudoku-game__cell.is-wrong.is-conflict::before { border-color: #fff; }
.sudoku-game__cell.is-revealed { color: var(--sdk-given); }
.sudoku-game__cell.is-revealed::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  border-style: solid;
  border-width: 0 34% 34% 0;
  border-width: 0 clamp(9px, 2.6vw, 16px) clamp(9px, 2.6vw, 16px) 0;
  border-color: transparent var(--sdk-flag) transparent transparent;
}
.sudoku-game__cell.is-shown { background: var(--sdk-shown); color: var(--sdk-given); }
.sudoku-game.is-solved .sudoku-game__cell { background: #d4fff2; }

/* Game over (third mistake): a card over the board, and the counters say the
   clock has stopped. */
.sudoku-game__layout { position: relative; }
.sudoku-game__over {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  border-radius: 14px;
  background: rgba(255, 255, 255, .78);
  z-index: 2;
}
.sudoku-game__over[hidden] { display: none; }
.sudoku-game__over-card {
  max-width: 22rem;
  padding: 1.4rem 1.5rem 1.25rem;
  border-radius: 18px;
  background: #fff;
  box-shadow: inset 0 0 0 3px #5a4a9c, 0 18px 40px -18px rgba(31, 7, 102, .55);
  text-align: center;
  color: #1f0766;
}
.sudoku-game__over-title { margin: 0 0 .35rem; font-size: 1.9rem; font-weight: 800; line-height: 1.1; }
.sudoku-game__over-text { margin: 0 0 1rem; font-size: .95rem; line-height: 1.45; color: #3a2f5e; }
.sudoku-game__over-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: .6rem; }
.sudoku-game.is-over .sudoku-game__meta > span:first-child { background: #5a4a9c; box-shadow: none; color: #fff; }
.sudoku-game.is-over .sudoku-game__meta > span:first-child b { color: #fff; }
.sudoku-game.is-over [data-timer] { text-decoration: line-through; text-decoration-thickness: 2px; }

/* Pencil marks: a 3×3 mini grid inside the square. */
.sudoku-game__notes {
  position: absolute;
  inset: 3%;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  pointer-events: none;
}
.sudoku-game__notes i {
  display: grid;
  place-items: center;
  font-style: normal;
  font-size: clamp(.68rem, 2.9vw, 1rem);
  font-weight: 700;
  color: #3a2f5e;
  line-height: 1;
}

/* Number pad. */
.sudoku-game__pad[hidden] { display: none; }
.sudoku-game__pad { display: flex; flex-direction: column; gap: .9rem; }
.sudoku-game__digits { display: grid; grid-template-columns: repeat(9, 1fr); gap: .4rem; }
.sudoku-game__digit {
  font: inherit;
  position: relative;
  height: 3.6rem;
  display: grid;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 12px;
  background: #fff;
  box-shadow: inset 0 0 0 2px #dccbff, 0 3px 0 #dccbff;
  color: #651fff;
  cursor: pointer;
}
.sudoku-game__digit-num { font-size: 1.6rem; font-weight: 800; line-height: 1; }
.sudoku-game__digit-left { position: absolute; right: .4rem; bottom: .3rem; font-size: .68rem; font-weight: 700; color: #6a5f8c; }
.sudoku-game__digit:hover:not(:disabled) { background: #651fff; color: #fff; box-shadow: 0 3px 0 #300c8f; }
.sudoku-game__digit:hover:not(:disabled) .sudoku-game__digit-left { color: #efe8ff; }
.sudoku-game__digit:active:not(:disabled) { transform: translateY(2px); box-shadow: 0 1px 0 #300c8f; }
.sudoku-game__digit.is-done { opacity: .45; }
.sudoku-game__digit:disabled { cursor: default; opacity: .5; }
.sudoku-game__digit:focus-visible,
.sudoku-game__tool:focus-visible { outline: 3px solid #651fff; outline-offset: 2px; }

.sudoku-game__tools { display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; }
.sudoku-game__tool {
  font: inherit;
  font-size: .9rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .35rem;
  padding: .6rem .5rem;
  border: 0;
  border-radius: 999px;
  background: #efe8ff;
  color: #300c8f;
  cursor: pointer;
}
.sudoku-game__tool b { font-weight: 800; color: #651fff; }
.sudoku-game__tool-icon { font-size: 1rem; line-height: 1; }
.sudoku-game__tool:hover:not(:disabled) { background: #dccbff; color: #1f0766; }
.sudoku-game__tool.is-on { background: #651fff; color: #fff; }
.sudoku-game__tool.is-on b { color: #20ffc0; }
.sudoku-game__tool.is-on:hover:not(:disabled) { background: #4210bd; color: #fff; }
.sudoku-game__tool:disabled { cursor: default; opacity: .55; }

.sudoku-game__legend { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; justify-content: center; gap: .4rem 1.25rem; font-size: .8rem; color: #4d4273; }
.sudoku-game__legend li { display: flex; align-items: center; gap: .5rem; }
.sudoku-game__swatch { position: relative; width: 1.1rem; height: 1.1rem; border-radius: 4px; flex: 0 0 auto; box-shadow: inset 0 0 0 1px #dccbff; overflow: hidden; }
.sudoku-game__swatch--wrong { background: var(--sdk-wrong); }
.sudoku-game__swatch--hint { background: #fff; }
.sudoku-game__swatch--hint::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  border-style: solid;
  border-width: 0 .6rem .6rem 0;
  border-color: transparent var(--sdk-flag) transparent transparent;
}

/* Counters wrap rather than run off narrow screens. */
.sudoku-game .sudoku-game__meta { flex-wrap: wrap; }

@media (max-width: 720px) {
  .sudoku-game .sudoku-game__meta { gap: .4rem; }
  .sudoku-game .sudoku-game__meta > span { padding: .35rem .7rem; gap: .3rem; font-size: .7rem; }
  .sudoku-game .sudoku-game__meta b { font-size: 1.05rem; }
  .sudoku-game__layout { max-width: none; }
  .sudoku-game__grid { max-width: none; }
  .sudoku-game__digits { gap: .3rem; }
  .sudoku-game__digit { height: 3.1rem; border-radius: 10px; }
  .sudoku-game__digit-num { font-size: 1.3rem; }
  .sudoku-game__digit-left { right: .2rem; bottom: .1rem; font-size: .6rem; }
  .sudoku-game__tools { gap: .35rem; }
  .sudoku-game__tool { flex-direction: column; gap: .1rem; padding: .45rem .2rem; font-size: .74rem; border-radius: 12px; }
}

/* Controls. */
.sudoku-game__controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin: 1.2rem 0 1rem;
}
.sudoku-game__btn {
  font: inherit;
  font-weight: 600;
  border-radius: 999px;
  padding: .6rem 1.4rem;
  cursor: pointer;
  border: 2px solid transparent;
}
.sudoku-game__btn--primary { background: var(--sdk-accent-dark); color: #fff; }
.sudoku-game__btn--primary:hover { background: #6a3df0; }
.sudoku-game__btn--primary:disabled { opacity: .5; cursor: default; }
.sudoku-game__btn--ghost { background: transparent; border-color: var(--sdk-accent); color: var(--sdk-accent-dark); }

.sudoku-game__status { margin: 0; color: var(--sdk-muted); flex: 1 1 100%; text-align: center; min-width: 0; }
.sudoku-game__status:empty { display: none; }
.sudoku-game__noscript { color: #e53935; }

/* Result + form. */
.sudoku-game__result {
  margin-top: 1.5rem;
  padding: 1.25rem;
  border: 1px solid var(--sdk-line);
  border-radius: var(--sdk-radius);
  background: #faf8ff;
}
.sudoku-game__score { font-size: 1.2rem; margin: 0 0 1rem; }
.sudoku-game__score strong { color: var(--sdk-accent-dark); }
.sudoku-game__form[hidden] { display: none; }
.sudoku-game__form-intro { font-weight: 600; margin: 0 0 .6rem; }
.sudoku-game__form-note { margin: 0 0 .8rem; font-size: .78rem; line-height: 1.4; color: var(--sdk-muted, #666); }
.sudoku-game__form.is-known [data-lb-intro],
.sudoku-game__form.is-known [data-lb-note],
.sudoku-game__form.is-known [data-lb-fields],
.sudoku-game__form.is-known [data-lb-consent] { display: none; }

.sudoku-game__known {
  margin: 0 0 1.25rem;
  padding: .9rem 1.1rem;
  border: 1px solid var(--sdk-line);
  border-radius: var(--sdk-radius);
  background: #faf8ff;
}
.sudoku-game__known-name { font-weight: 700; margin: 0 0 .3rem; }
.sudoku-game__known .sudoku-game__form-note { margin: 0; }
.sudoku-game__fields { display: grid; grid-template-columns: 1fr 1fr; gap: .7rem; }
.sudoku-game__field { display: flex; flex-direction: column; gap: .25rem; font-size: .85rem; }
.sudoku-game__field:last-of-type { grid-column: 1 / -1; }
.sudoku-game__field input {
  font: inherit;
  padding: .55rem .7rem;
  border: 1px solid var(--sdk-line);
  border-radius: 8px;
}
.sudoku-game__field input:focus-visible { outline: 2px solid var(--sdk-accent-dark); outline-offset: 1px; }
.sudoku-game__form button[type="submit"] { margin-top: .9rem; }
.sudoku-game__form-feedback { margin: .6rem 0 0; font-size: .9rem; color: var(--sdk-accent-dark); min-height: 1.1em; }
.sudoku-game__hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.sudoku-game__consent { display: flex; align-items: flex-start; gap: .5rem; margin: .2rem 0 .9rem; font-size: .82rem; line-height: 1.35; color: var(--sdk-ink, #333); cursor: pointer; }
.sudoku-game__consent input { flex: 0 0 auto; margin-top: .15rem; }

/* Leaderboard. */
.sudoku-game__leaderboard { margin-top: 2rem; }
.sudoku-game__leaderboard-title { font-size: 1.3rem; margin: 0 0 .75rem; }
.sudoku-game__board { list-style: none; margin: 0; padding: 0; }
.sudoku-game__board-row {
  display: grid;
  grid-template-columns: 3rem 1fr auto;
  align-items: center;
  gap: .5rem;
  padding: .6rem .8rem;
  border-bottom: 1px solid var(--sdk-line);
}
.sudoku-game__board-row.is-me {
  background: #f4f0ff;
  border-radius: 8px;
  border-bottom-color: transparent;
  font-weight: 600;
}
.sudoku-game__board-row.is-me em { color: var(--sdk-accent-dark); font-style: normal; font-size: .8rem; }
.sudoku-game__board-rank { font-weight: 700; color: var(--sdk-accent-dark); }
.sudoku-game__board-name { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sudoku-game__board-score { font-variant-numeric: tabular-nums; font-weight: 600; }
.sudoku-game__board-sep {
  display: flex;
  align-items: center;
  gap: .7rem;
  margin: .4rem 0;
  padding: .3rem 0;
  color: var(--sdk-accent-dark);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.sudoku-game__board-sep::before,
.sudoku-game__board-sep::after {
  content: '';
  flex: 1;
  height: 0;
  border-top: 2px dashed var(--sdk-accent);
  opacity: .8;
}
.sudoku-game__board-empty { color: var(--sdk-muted); font-style: italic; padding: .6rem .8rem; }
.sudoku-game__board-note { margin: .8rem 0 0; font-size: .8rem; color: var(--sdk-muted); }

@media (max-width: 720px) {
  .sudoku-game-wrap { padding-left: .5rem; padding-right: .5rem; }
}
@media (max-width: 560px) {
  .sudoku-game__fields { grid-template-columns: 1fr; }
  .sudoku-game__field:last-of-type { grid-column: auto; }
}