:root {
  color-scheme: light;
  --bg: #fffdf8;
  --text: #222222;
  --muted: #404040;
  --line: #d6d6d6;
  --cell-bg: #ffffff;
  --preview: #e7e7e7;
  --girl: #ff5ea8;
  --boy: #5a91ff;
  --surface-board: #fffbef;
  --surface-list: #fffbef;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app {
  max-width: 1080px;
  margin: 0 auto;
  padding: 3.4rem 1rem 3.7rem;
}

.header h1 {
  margin: 0 0 0.4rem;
  font-size: clamp(1.45rem, 3.8vw, 2rem);
  text-wrap: balance;
}

.header p {
  margin: 0 0 1.2rem;
  max-width: 40em;
  color: var(--muted);
  font-size: 0.98rem;
  text-wrap: pretty;
}

.header-layout {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
}

.header-copy {
  max-width: 100%;
}

.game-layout {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
  margin-top: 3rem;
}

.board-wrap {
  order: 2;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.7rem;
  background: var(--surface-board);
}

.board {
  display: grid;
  grid-template-columns: repeat(var(--cols), minmax(22px, 1fr));
  gap: 2px;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
}

.cell {
  appearance: none;
  -webkit-appearance: none;
  aspect-ratio: 1 / 1;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 7px;
  display: grid;
  place-items: center;
  font-size: clamp(0.8rem, 2.8vw, 1.1rem);
  line-height: 1;
  font-weight: 700;
  font-family: inherit;
  color: #2d2d2d;
  background: var(--cell-bg);
}

.cell.preview {
  background: var(--preview);
}

.cell.error-flash {
  background: color-mix(in oklab, #f45f5f 18%, var(--cell-bg));
  border-color: color-mix(in oklab, #cf3f3f 55%, var(--line));
}

.cell.success-flash-girl {
  background: color-mix(in oklab, var(--girl) 42%, white);
  border-color: color-mix(in oklab, var(--girl) 72%, #b0b0b0);
}

.cell.success-flash-boy {
  background: color-mix(in oklab, var(--boy) 44%, white);
  border-color: color-mix(in oklab, var(--boy) 72%, #b0b0b0);
}

.cell.success-flash-mixed {
  background: linear-gradient(
    135deg,
    color-mix(in oklab, var(--girl) 42%, white) 0%,
    color-mix(in oklab, var(--girl) 42%, white) 49.5%,
    color-mix(in oklab, var(--boy) 44%, white) 50.5%,
    color-mix(in oklab, var(--boy) 44%, white) 100%
  );
  border-color: color-mix(in oklab, #8e79a9 65%, #aaaaaa);
}

.cell.found-girl {
  background: color-mix(in oklab, var(--girl) 30%, white);
  border-color: color-mix(in oklab, var(--girl) 55%, #bbbbbb);
  color: #222222;
}

.cell.found-boy {
  background: color-mix(in oklab, var(--boy) 32%, white);
  border-color: color-mix(in oklab, var(--boy) 58%, #bbbbbb);
  color: #222222;
}

.cell.found-mixed {
  background: linear-gradient(
    135deg,
    color-mix(in oklab, var(--girl) 30%, white) 0%,
    color-mix(in oklab, var(--girl) 30%, white) 49.5%,
    color-mix(in oklab, var(--boy) 32%, white) 50.5%,
    color-mix(in oklab, var(--boy) 32%, white) 100%
  );
  border-color: color-mix(in oklab, #8e79a9 54%, #bbbbbb);
  color: #222222;
}

.lists {
  order: 1;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.95rem 1.1rem;
  background: var(--surface-list);
  display: grid;
  gap: 0.9rem;
}

.lists h2 {
  margin: 0;
  font-size: 1rem;
}

.lists ul {
  margin: 0.45rem 0 0;
  padding-left: 0;
  list-style: none;
}

.lists li {
  color: var(--muted);
  margin: 0.25rem 0;
  font-weight: 600;
  --bullet-size: 1.02rem;
  padding-left: 0;
  min-height: 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.52rem;
}

.name-marker {
  position: relative;
  flex: 0 0 auto;
  width: var(--bullet-size);
  height: var(--bullet-size);
  border-radius: 50%;
  border: 2px solid #8a8a8a;
  background: transparent;
}

.name-marker::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 0.24rem;
  height: 0.5rem;
  border-right: 2px solid transparent;
  border-bottom: 2px solid transparent;
  transform: translate(-50%, -60%) rotate(45deg);
  pointer-events: none;
}

.lists li.found-girl {
  color: var(--girl);
}

.lists li.found-girl .name-marker {
  background: color-mix(in oklab, var(--girl) 26%, white);
  border-color: color-mix(in oklab, var(--girl) 70%, #909090);
}

.lists li.found-girl .name-marker::after {
  border-right-color: color-mix(in oklab, var(--girl) 82%, #622544);
  border-bottom-color: color-mix(in oklab, var(--girl) 82%, #622544);
}

.lists li.found-boy {
  color: var(--boy);
}

.lists li.found-boy .name-marker {
  background: color-mix(in oklab, var(--boy) 26%, white);
  border-color: color-mix(in oklab, var(--boy) 70%, #7c8da8);
}

.lists li.found-boy .name-marker::after {
  border-right-color: color-mix(in oklab, var(--boy) 78%, #2a4166);
  border-bottom-color: color-mix(in oklab, var(--boy) 78%, #2a4166);
}

.lists li.decoy-revealed {
  opacity: 0.5;
  text-decoration: line-through;
  text-decoration-thickness: 1.5px;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgb(34 34 34 / 0.55);
  display: grid;
  place-items: center;
  padding: 1rem;
  overflow: hidden;
}

.modal.hidden {
  display: none;
}

.modal-card {
  width: min(92vw, 440px);
  border-radius: 14px;
  padding: 2.2rem 2rem 2rem;
  background: #ffffff;
  border: 1px solid #d7d7d7;
  text-align: center;
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.modal-close-btn {
  position: absolute;
  top: 0.35rem;
  right: 0.35rem;
  width: 2.35rem;
  height: 2.35rem;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  line-height: 1;
  font-size: 1.5rem;
  font-weight: 800;
  border-width: 2px;
  border-color: #cfcfcf;
  background: rgb(255 255 255 / 0.78);
  z-index: 6;
  pointer-events: auto;
  touch-action: manipulation;
  text-shadow: 0 0 0 currentColor;
}

.modal-close-btn:hover {
  background: #ffffff;
}

.modal-card::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 34%;
  width: clamp(180px, 55vw, 280px);
  height: clamp(180px, 55vw, 280px);
  border-radius: 50%;
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.78);
  background:
    radial-gradient(circle, rgb(255 244 176 / 0.52) 0%, rgb(255 244 176 / 0) 62%),
    radial-gradient(circle at 30% 30%, rgb(255 255 255 / 0.6) 0 8%, rgb(255 255 255 / 0) 26%),
    radial-gradient(circle at 72% 35%, rgb(255 255 255 / 0.56) 0 7%, rgb(255 255 255 / 0) 24%),
    radial-gradient(circle at 48% 78%, rgb(255 255 255 / 0.52) 0 7%, rgb(255 255 255 / 0) 25%);
  z-index: -1;
}

.modal-card h2 {
  margin: 0;
  font-size: 1.7rem;
  color: #2b2b2b;
}

.modal-card p {
  margin: 0.65rem 0 0;
  line-height: 1.35;
  color: var(--muted);
}

#restart-btn {
  margin-top: 1.15rem;
  padding: 0.88rem 1.75rem;
  border-radius: 12px;
  font-size: 1.06rem;
  font-weight: 700;
  background: #ffd8e8;
  border-color: #d78cae;
  color: #5a2340;
}

#restart-btn:hover {
  background: #ffc4dc;
  border-color: #c96a95;
}

button {
  border: 1px solid #bfbfbf;
  background: #f5f5f5;
  color: #222222;
  border-radius: 8px;
  padding: 0.55rem 0.8rem;
  font-size: 0.98rem;
  font-weight: 600;
  cursor: pointer;
}

button:hover {
  background: #eeeeee;
}

.post-win-actions {
  margin-top: 0.25rem;
}

.post-win-actions button.hidden {
  display: none;
}

#post-win-restart-btn {
  padding: 0.78rem 1.35rem;
  border-radius: 11px;
  font-weight: 700;
}

.modal.is-celebrating .modal-card {
  animation: modal-pop 380ms cubic-bezier(0.2, 0.85, 0.2, 1) both;
  background: linear-gradient(180deg, #fffdf8 0%, #fff8ea 100%);
  border-color: #e4d8be;
  box-shadow: 0 16px 40px rgb(92 74 22 / 0.24);
}

.modal.is-celebrating .modal-card::before {
  animation: sparkle-ring 1050ms ease-out 120ms both;
}

.modal.is-celebrating .modal-card h2 {
  color: #d84a8f;
  text-shadow: 0 2px 0 rgb(255 255 255 / 0.65);
  animation: title-bounce 650ms ease-out both;
}

.modal.is-celebrating .modal-card p {
  color: #3f3a2d;
}

.modal.is-celebrating .modal-card #restart-btn {
  background: #ffd8e8;
  border-color: #d78cae;
  color: #5a2340;
}

.modal.is-celebrating .modal-card #restart-btn:hover {
  background: #ffc4dc;
  border-color: #c96a95;
}

.modal.is-celebrating .modal-card .modal-close-btn {
  background: rgb(255 247 216 / 0.88);
}

.confetti-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 1;
}

.confetti-piece {
  position: absolute;
  top: -12%;
  width: 10px;
  height: 16px;
  border-radius: 3px;
  opacity: 0.95;
  transform: translate3d(0, -20px, 0) rotate(0deg);
  animation: confetti-fall var(--fall-ms, 2200ms) linear forwards;
  animation-delay: var(--delay-ms, 0ms);
}

@keyframes modal-pop {
  0% {
    transform: scale(0.86) translateY(10px);
    opacity: 0;
  }
  100% {
    transform: scale(1) translateY(0);
    opacity: 1;
  }
}

@keyframes title-bounce {
  0% {
    transform: translateY(8px) scale(0.9);
    opacity: 0;
  }
  65% {
    transform: translateY(-2px) scale(1.04);
    opacity: 1;
  }
  100% {
    transform: translateY(0) scale(1);
  }
}

@keyframes confetti-fall {
  0% {
    transform: translate3d(0, -30px, 0) rotate(0deg);
    opacity: 0.95;
  }
  80% {
    opacity: 0.95;
  }
  100% {
    transform: translate3d(var(--drift-x, 0px), 120vh, 0) rotate(var(--spin, 450deg));
    opacity: 0;
  }
}

@keyframes sparkle-ring {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.72);
  }
  32% {
    opacity: 0.85;
  }
  70% {
    opacity: 0.35;
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(1.08);
  }
}

@media (min-width: 860px) {
  .header-layout {
    flex-direction: row;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1.5rem;
  }

  .header-copy {
    flex: 1;
    min-width: 0;
  }

  .post-win-actions {
    margin-top: 0.2rem;
    flex: 0 0 auto;
  }

  .game-layout {
    display: grid;
    grid-template-columns: 250px minmax(0, 1fr);
    align-items: start;
  }

  .lists {
    order: 1;
    width: auto;
    max-width: 100%;
    padding-right: 1rem;
  }

  .board-wrap {
    order: 2;
  }
}

@media (max-width: 640px) {
  .app {
    padding: 2.5rem calc(0.65rem + 8px) 2.9rem;
  }

  .board-wrap {
    padding: 0.5rem;
    border-radius: 12px;
  }

  .board {
    gap: 1px;
  }

  .cell {
    border-radius: 6px;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #13110c;
    --text: #efefef;
    --muted: #c9c9c9;
    --line: #4a4a4a;
    --cell-bg: #202020;
    --preview: #383838;
    --surface-board: #1a1711;
    --surface-list: #1a1711;
  }

  .board-wrap,
  .modal-card {
    background: var(--surface-board);
  }

  .lists {
    background: var(--surface-list);
  }

  .modal-card h2 {
    color: #f1f1f1;
  }

  .modal.is-celebrating .modal-card {
    background: linear-gradient(180deg, #2a2418 0%, #211c13 100%);
    border-color: #6e5f3f;
    box-shadow: 0 18px 42px rgb(0 0 0 / 0.52);
  }

  .modal-card::before {
    background:
      radial-gradient(circle, rgb(255 231 139 / 0.28) 0%, rgb(255 231 139 / 0) 66%),
      radial-gradient(circle at 30% 30%, rgb(255 255 255 / 0.22) 0 8%, rgb(255 255 255 / 0) 26%),
      radial-gradient(circle at 72% 35%, rgb(255 255 255 / 0.2) 0 7%, rgb(255 255 255 / 0) 24%),
      radial-gradient(circle at 48% 78%, rgb(255 255 255 / 0.18) 0 7%, rgb(255 255 255 / 0) 25%);
  }

  .modal.is-celebrating .modal-card h2 {
    color: #ff7dbe;
    text-shadow: none;
  }

  .modal.is-celebrating .modal-card p {
    color: #dfd6c3;
  }

  .modal.is-celebrating .modal-card #restart-btn {
    background: #5f3148;
    border-color: #a56a87;
    color: #ffeaf3;
  }

  .modal.is-celebrating .modal-card #restart-btn:hover {
    background: #6d3953;
  }

  .modal-close-btn {
    background: #f2e9c8;
    border-color: #d0be86;
    color: #1f1f1f;
    box-shadow: 0 3px 10px rgb(0 0 0 / 0.28);
  }

  .modal-close-btn:hover {
    background: #f7f0d6;
    border-color: #dbc995;
  }

  .cell {
    color: #f1f1f1;
  }

  .cell.error-flash {
    background: color-mix(in oklab, #ff7575 22%, var(--cell-bg));
    border-color: color-mix(in oklab, #ff6f6f 60%, #606060);
  }

  .cell.success-flash-girl {
    background: color-mix(in oklab, var(--girl) 48%, #292929);
    border-color: color-mix(in oklab, var(--girl) 78%, #6c6c6c);
  }

  .cell.success-flash-boy {
    background: color-mix(in oklab, var(--boy) 50%, #292929);
    border-color: color-mix(in oklab, var(--boy) 78%, #6c6c6c);
  }

  .cell.success-flash-mixed {
    background: linear-gradient(
      135deg,
      color-mix(in oklab, var(--girl) 48%, #292929) 0%,
      color-mix(in oklab, var(--girl) 48%, #292929) 49.5%,
      color-mix(in oklab, var(--boy) 50%, #292929) 50.5%,
      color-mix(in oklab, var(--boy) 50%, #292929) 100%
    );
    border-color: color-mix(in oklab, #8e79a9 72%, #666666);
  }

  .modal {
    background: rgb(20 20 20 / 0.68);
  }

  button {
    background: #2e2e2e;
    color: #f4f4f4;
    border-color: #575757;
  }

  button:hover {
    background: #3a3a3a;
  }
}

@media (prefers-reduced-motion: reduce) {
  .modal.is-celebrating .modal-card,
  .modal.is-celebrating .modal-card h2,
  .modal.is-celebrating .modal-card::before,
  .confetti-piece {
    animation: none;
  }
}