/* ============================================================
   Dots and Boxes — game-specific styles
   ============================================================ */

.dots-boxes-wrap {
  max-width: 760px;
}

.db-controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.db-toggle {
  display: inline-flex;
  border: 2px solid var(--ink);
  border-radius: 999px;
  overflow: hidden;
}
.db-toggle button {
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 0.85rem;
  padding: 8px 16px;
  border: none;
  background: var(--surface);
  color: var(--ink-soft);
  cursor: pointer;
}
.db-toggle button.active {
  background: var(--ink);
  color: #fff;
}

#difficulty-row[hidden] {
  display: none;
}

.db-fast-track {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 800;
  color: var(--ink-soft);
  background: var(--surface);
  border: 2px solid var(--ink);
  border-radius: 999px;
  padding: 8px 14px;
  box-shadow: 0 3px 0 rgba(34, 49, 74, 0.12);
  cursor: pointer;
}
.db-fast-track input {
  width: 18px;
  height: 18px;
  accent-color: var(--simon-blue);
}

.db-score-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}
.db-blue .value { color: var(--simon-blue); }
.db-red .value { color: var(--simon-red); }

.db-box-count-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: -8px;
}
.db-box-count {
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 0.88rem;
  color: var(--ink-soft);
  background: var(--surface);
  border: 2px solid var(--line);
  border-radius: 999px;
  padding: 6px 12px;
}
.db-blue-count strong { color: var(--simon-blue); }
.db-red-count strong { color: var(--simon-red); }

.db-status {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--ink-soft);
  min-height: 1.4em;
  text-align: center;
}

.db-board-shell {
  width: min(620px, 94vw);
  aspect-ratio: 1;
  flex: 0 0 auto;
  padding: clamp(10px, 2.2vw, 18px);
  border: 3px solid var(--ink);
  border-radius: var(--radius-md);
  background: #dbe6f5;
  box-shadow: var(--shadow);
  box-sizing: border-box;
  position: relative;
  overflow: hidden;
}
.db-board-shell::after {
  content: "";
  position: absolute;
  inset: clamp(10px, 2.2vw, 18px);
  z-index: 8;
  background: linear-gradient(105deg, transparent 18%, rgba(255, 255, 255, 0.78) 50%, transparent 82%);
  opacity: 0;
  transform: translateX(-120%);
  pointer-events: none;
}
.db-board-shell.is-victory {
  animation: db-victory-pop 0.52s ease both;
}
.db-board-shell.is-victory::after {
  animation: db-victory-sweep 0.95s ease-out 0.12s both;
}

.db-board {
  --db-boxes: 3;
  --db-dots: calc(var(--db-boxes) + 1);
  --db-gap: calc(100% / var(--db-boxes));
  position: relative;
  width: 100%;
  height: 100%;
  touch-action: none;
}

.db-box {
  position: absolute;
  width: calc(100% / var(--db-boxes));
  height: calc(100% / var(--db-boxes));
  left: calc(var(--col) * var(--db-gap));
  top: calc(var(--row) * var(--db-gap));
  border-radius: 6px;
  opacity: 0;
  transition: opacity 0.18s ease, transform 0.18s ease;
  transform: scale(0.92);
  pointer-events: none;
}
.db-box.is-blue {
  background: rgba(46, 109, 242, 0.38);
  opacity: 1;
  transform: scale(1);
}
.db-box.is-red {
  background: rgba(230, 57, 44, 0.38);
  opacity: 1;
  transform: scale(1);
}

.db-line {
  position: absolute;
  border: none;
  border-radius: 2px;
  z-index: 2;
}
.db-line.horizontal {
  width: calc(100% / var(--db-boxes));
  height: clamp(9px, 1.7vw, 14px);
  left: calc(var(--col) * var(--db-gap));
  top: calc(var(--row) * var(--db-gap));
  transform: translateY(-50%);
}
.db-line.vertical {
  width: clamp(9px, 1.7vw, 14px);
  height: calc(100% / var(--db-boxes));
  left: calc(var(--col) * var(--db-gap));
  top: calc(var(--row) * var(--db-gap));
  transform: translateX(-50%);
}
.db-line.is-blue,
.db-line.is-red {
  background: #16b8d9;
  box-shadow: 0 2px 0 rgba(34, 49, 74, 0.14);
}
.db-line.is-prefill {
  background: #16b8d9;
  opacity: 0.65;
}
.db-line.is-latest {
  background: #087c94;
  box-shadow: 0 0 0 3px rgba(8, 124, 148, 0.22), 0 2px 0 rgba(34, 49, 74, 0.16);
}

.db-preview-line {
  position: absolute;
  left: var(--start-x);
  top: var(--start-y);
  width: var(--preview-length);
  height: clamp(9px, 1.7vw, 14px);
  border-radius: 2px;
  background: #16b8d9;
  box-shadow: 0 0 0 4px rgba(22, 184, 217, 0.18), 0 2px 0 rgba(34, 49, 74, 0.12);
  opacity: 0.78;
  transform: translateY(-50%) rotate(var(--preview-angle));
  transform-origin: left center;
  z-index: 2;
  pointer-events: none;
}

.db-dot {
  position: absolute;
  appearance: none;
  width: clamp(14px, 2.6vw, 20px);
  height: clamp(14px, 2.6vw, 20px);
  left: calc(var(--col) * var(--db-gap));
  top: calc(var(--row) * var(--db-gap));
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: #64748b;
  border: 2px solid var(--surface);
  box-shadow: 0 2px 0 rgba(34, 49, 74, 0.16), inset 0 0 0 2px rgba(255, 255, 255, 0.95);
  z-index: 3;
  cursor: pointer;
  padding: 0;
  transition: transform 0.08s ease, box-shadow 0.12s ease, background 0.12s ease;
}
.db-dot:hover:not(:disabled),
.db-dot.is-selected,
.db-dot.is-target {
  background: #7c8798;
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.55), 0 2px 0 rgba(34, 49, 74, 0.18), inset 0 0 0 2px #fff;
  transform: translate(-50%, -50%) scale(1.2);
}
.db-dot.is-target {
  background: #8b97a8;
}
.db-dot:disabled {
  cursor: default;
}

.db-burst {
  position: absolute;
  left: calc(clamp(10px, 2.2vw, 18px) + ((100% - (clamp(10px, 2.2vw, 18px) * 2)) / var(--db-boxes) * var(--col, 0)));
  top: calc(clamp(10px, 2.2vw, 18px) + ((100% - (clamp(10px, 2.2vw, 18px) * 2)) / var(--db-boxes) * var(--row, 0)));
  width: clamp(9px, 2.4vw, 15px);
  height: clamp(9px, 2.4vw, 15px);
  border-radius: 3px;
  background: #fff;
  border: 1px solid rgba(34, 49, 74, 0.35);
  z-index: 9;
  pointer-events: none;
  transform: translate(-50%, -50%) scale(0);
  animation: db-burst-pop 0.82s ease-out var(--delay) both;
}
.db-burst.is-blue {
  background: var(--simon-blue);
}
.db-burst.is-red {
  background: var(--simon-red);
}

@keyframes db-victory-pop {
  0%, 100% { transform: scale(1); }
  42% { transform: scale(1.025); }
}

@keyframes db-victory-sweep {
  0% { opacity: 0; transform: translateX(-120%); }
  18%, 72% { opacity: 1; }
  100% { opacity: 0; transform: translateX(120%); }
}

@keyframes db-burst-pop {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0) rotate(0deg);
  }
  28% {
    opacity: 1;
    transform: translate(-50%, -95%) scale(1) rotate(18deg);
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -190%) scale(0.35) rotate(80deg);
  }
}

#game-stage:fullscreen,
#game-stage.is-ios-fullscreen {
  border-radius: 0;
  border: none;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  height: calc(var(--obg-vh, 1vh) * 100);
  justify-content: flex-start;
  background: var(--bg-soft);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
#game-stage:fullscreen .db-board-shell,
#game-stage.is-ios-fullscreen .db-board-shell {
  width: min(92vw, 78vh);
  width: min(92vw, 78dvh);
  height: auto;
}

@media (max-width: 560px) {
  .db-toggle {
    max-width: 100%;
    flex-wrap: wrap;
    justify-content: center;
    border-radius: var(--radius-md);
  }
  .db-toggle button {
    padding: 8px 12px;
  }
  .db-board-shell {
    width: min(94vw, 430px);
    padding: 12px;
  }
}