/* --- Mini Sudoku 6x6 Game Specific Styles --- */

.sudoku-game-panel {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: center;
}

/* Header Bar */
.sdk-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-glass);
  flex-wrap: wrap;
  gap: 1rem;
}

.sdk-header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.sdk-title {
  font-size: 1.4rem;
  font-weight: 800;
  color: #ffffff;
}

.sdk-stats-bar {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 0.6rem 1.25rem;
}

.sdk-stat-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  font-weight: 600;
}

.sdk-stat-val {
  font-family: 'Inter', monospace;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--accent-cyan);
}

/* Difficulty Badges */
.sdk-diff-badge {
  font-size: 0.85rem;
  font-weight: 800;
  padding: 0.25rem 0.65rem;
  border-radius: 12px;
}

.sdk-diff-easy {
  background: rgba(0, 230, 118, 0.2);
  color: #00e676;
  border: 1px solid rgba(0, 230, 118, 0.4);
}

.sdk-diff-medium {
  background: rgba(255, 215, 0, 0.2);
  color: #ffd700;
  border: 1px solid rgba(255, 215, 0, 0.4);
}

.sdk-diff-hard {
  background: rgba(255, 82, 82, 0.2);
  color: #ff5252;
  border: 1px solid rgba(255, 82, 82, 0.4);
}

/* 6x6 Board Wrapper */
.sdk-grid-wrapper {
  background: rgba(0, 0, 0, 0.3);
  border: 3px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-md);
  padding: 6px;
  max-width: 440px;
  width: 100%;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5);
}

.sdk-grid-board {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-template-rows: repeat(6, 1fr);
  gap: 2px;
  background: rgba(255, 255, 255, 0.1);
  width: 100%;
}

/* Cell Styles */
.sdk-cell {
  aspect-ratio: 1;
  background: rgba(18, 18, 37, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  font-weight: 800;
  cursor: pointer;
  user-select: none;
  position: relative;
  transition: background 0.15s ease, outline 0.15s ease, color 0.15s ease;
}

.sdk-cell.is-given {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
}

.sdk-cell.is-user {
  color: var(--accent-cyan);
}

.sdk-cell.is-selected {
  outline: 3px solid var(--accent-cyan);
  background: rgba(0, 242, 254, 0.2);
  z-index: 2;
}

.sdk-cell.is-highlight-num {
  background: rgba(118, 75, 162, 0.35);
}

.sdk-cell.is-conflict {
  color: #ff5252;
  background: rgba(255, 82, 82, 0.25);
  animation: cardShake 0.3s ease-in-out;
}

/* 2x3 Block Boundaries */
.border-right-thick {
  border-right: 3px solid rgba(255, 255, 255, 0.4);
}

.border-bottom-thick {
  border-bottom: 3px solid rgba(255, 255, 255, 0.4);
}

/* Pencil Notes Sub-Grid (3 cols x 2 rows) */
.sdk-notes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, 1fr);
  width: 100%;
  height: 100%;
  padding: 2px;
}

.sdk-note-num {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Controls & Keypad */
.sdk-controls {
  width: 100%;
  max-width: 440px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.sdk-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.sdk-tool-btn {
  flex: 1;
  padding: 0.75rem;
  font-size: 0.95rem;
  font-weight: 700;
}

.sdk-tool-btn.is-active {
  background: rgba(0, 242, 254, 0.2);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.sdk-keypad {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0.6rem;
}

.sdk-key-btn {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0.04) 100%);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  color: #ffffff;
  font-size: 1.35rem;
  font-weight: 800;
  padding: 0.85rem 0;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.sdk-key-btn:hover {
  background: rgba(255, 255, 255, 0.22);
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
}

/* Responsive Sudoku Board */
@media (max-width: 600px) {
  .sdk-cell {
    font-size: 1.2rem;
  }

  .sdk-note-num {
    font-size: 0.55rem;
  }

  .sdk-key-btn {
    font-size: 1.1rem;
    padding: 0.6rem 0;
  }
}