/* GAME CONTAINER */
.sd-pikachu-game {
  text-align: center;
}

/* WRAPPER */
.sd-pikachu-wrapper {
  display: inline-block;
  margin: 0 auto;
  padding: 6px 6px 10px;
  border-radius: 10px;
  background: linear-gradient(135deg, #f3f9ff, #e4f5ff);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  box-sizing: border-box;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  overflow: hidden;
}

/* INFO */
.sd-pikachu-info {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 8px;
}

.sd-pikachu-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: flex-start;
}

.sd-pikachu-level,
.sd-pikachu-time,
.sd-pikachu-score,
.sd-pikachu-remaining,
.sd-pikachu-shuffle-count {
  font-size: 14px;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
}

.sd-pikachu-time-bar {
  flex: 1;
  height: 8px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.08);
  overflow: hidden;
  min-width: 120px;
}

.sd-pikachu-time-bar-inner {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #4caf50, #ffeb3b, #f44336);
  transition: width 0.2s linear;
}

/* CONTROLS */
.sd-pikachu-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.sd-pikachu-btn {
  padding: 6px 12px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  background: #ffca28;
  color: #4e342e;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.2);
  text-transform: uppercase;
}

.sd-pikachu-btn:hover {
  filter: brightness(1.05);
}

.sd-pikachu-btn:active {
  transform: translateY(1px);
  box-shadow: 0 0 0 rgba(0, 0, 0, 0.2);
}

.sd-pikachu-hint {
  background: #4caf50;
  color: #fff;
}

.sd-pikachu-shuffle {
  background: #29b6f6;
  color: #fff;
}

.sd-pikachu-reset {
  background: #ef5350;
  color: #fff;
}

/* MESSAGE */
.sd-pikachu-message {
  min-height: 1.1em;
  font-size: 13px;
  font-weight: 500;
  color: #2e7d32;
  opacity: 0;
  transition: opacity 0.2s;
  margin-top: 4px;
}

.sd-pikachu-message--show {
  opacity: 1;
}

/* BOARD */
.sd-pikachu-board {
  --tile-width: 50px;
  --tile-gap: 2px;

  position: relative;  /* quan trọng: để canvas line overlay */
  display: grid;
  grid-template-columns: repeat(var(--sd-pikachu-cols), var(--tile-width));
  grid-auto-rows: auto;
  gap: var(--tile-gap);
  justify-content: center;

  width: max-content;
  padding: 4px;
  border-radius: 6px;
  background: #2e7d32;
  background-image: linear-gradient(
    45deg,
    rgba(255, 255, 255, 0.08) 25%,
    transparent 25%,
    transparent 50%,
    rgba(255, 255, 255, 0.08) 50%,
    rgba(255, 255, 255, 0.08) 75%,
    transparent 75%,
    transparent
  );
  background-size: 16px 16px;
  box-sizing: border-box;
  margin: 0 auto;
}

/* Canvas vẽ đường nối */
.sd-pikachu-path-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* TILE */
.sd-pikachu-tile {
  width: var(--tile-width);
  border: none;
  border-radius: 0;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 0;
  margin: 0;
  box-shadow: none;
  transition: transform 0.08s;
}

/* ảnh giữ đúng tỉ lệ & bỏ bo góc của theme */
.sd-pikachu-tile img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 0 !important;
}

/* Ô đầu tiên được chọn -> làm mờ & xám */
.sd-pikachu-tile--first img {
  filter: grayscale(100%);
  opacity: 0.6;
}

/* Ô thứ hai được chọn -> viền đỏ */
.sd-pikachu-tile--second {
  outline: 2px solid #ff0000;
  outline-offset: -1px;
}

/* hover: nhích nhẹ */
.sd-pikachu-tile:hover {
  transform: translateY(-1px);
}

/* Hint: viền xanh dương */
.sd-pikachu-tile--hint {
  outline: 2px solid #29b6f6;
  outline-offset: -1px;
  animation: sd-pikachu-hint-blink 0.4s alternate 3;
}

/* ô bị xóa / trống */
.sd-pikachu-tile--removed,
.sd-pikachu-tile--empty {
  visibility: hidden;
}

@keyframes sd-pikachu-hint-blink {
  from { transform: translateY(0); }
  to   { transform: translateY(-2px); }
}

/* RESPONSIVE TILE WIDTH */
@media (max-width: 1024px) {
  .sd-pikachu-board {
    --tile-width: 44px;
  }
}

@media (max-width: 600px) {
  .sd-pikachu-board {
    --tile-width: 36px;
    --tile-gap: 2px;
  }
}