/* Karakter Sudokusu – 6x6 */

.cs-page {
  font-family: 'Poppins', sans-serif;
  background: var(--bg-dark, #0a0a0f);
  color: var(--text-primary, #fff);
  min-height: 100vh;
  padding-bottom: 2rem;
}

.cs-header {
  text-align: center;
  padding: 1.5rem 1rem 1rem;
}

.cs-back {
  display: inline-block;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary, #b0b0b8);
  text-decoration: none;
}

.cs-back:hover { color: var(--text-primary); }

.cs-title {
  font-size: clamp(1.5rem, 5vw, 2rem);
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.cs-subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.cs-main {
  max-width: 400px;
  margin: 0 auto;
  padding: 0 1rem;
}

.cs-game-wrap {
  background: rgba(255,255,255,0.04);
  border-radius: 16px;
  padding: 1.25rem;
  border: 1px solid rgba(255,255,255,0.08);
}

.cs-grid-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 1rem;
}

/* 4x4 grid, 2x2 blocks */
.cs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(4, 1fr);
  gap: 0;
  width: min(280px, 90vw);
  aspect-ratio: 1;
  background: #1a1a24;
  border-radius: 10px;
  overflow: hidden;
  border: 2px solid rgba(255,255,255,0.12);
}

.cs-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: clamp(0.85rem, 4vw, 1.1rem);
  cursor: pointer;
  background: #22222e;
  border: 1px solid rgba(255,255,255,0.06);
  transition: background 0.15s;
}

/* 2x2 kutu kenarları */
.cs-cell[data-col="2"] { border-right-width: 2px; border-right-color: rgba(255,255,255,0.25); }
.cs-cell[data-row="1"],
.cs-cell[data-row="3"] { border-bottom-width: 2px; border-bottom-color: rgba(255,255,255,0.25); }

.cs-cell:hover { background: rgba(102, 126, 234, 0.2); }

.cs-cell.selected {
  background: rgba(102, 126, 234, 0.35);
  box-shadow: inset 0 0 0 2px #667eea;
}

.cs-cell.fixed {
  color: var(--text-primary);
  cursor: default;
  background: #2a2a38;
}

.cs-cell.fixed:hover { background: #2a2a38; }

.cs-cell.error { background: rgba(245, 87, 108, 0.25); }

/* Karakter logosu veya renkli kutu – ışıklı */
.cs-char {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
}
.cs-char-glow {
  box-shadow: 0 0 12px var(--cs-char-color, #667eea), 0 0 4px var(--cs-char-color, #667eea);
}
.cs-char-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.cs-char-emoji {
  font-size: 0.9rem;
  color: #fff;
  text-shadow: 0 0 8px rgba(0,0,0,0.5);
}

.cs-cell .cs-notes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 2px;
  padding: 2px;
  width: 100%;
  height: 100%;
  align-items: center;
  justify-items: center;
}
.cs-note-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  opacity: 0.35;
}
.cs-note-dot.visible {
  opacity: 1;
  box-shadow: 0 0 6px currentColor;
}

/* Controls: Hint, Notes */
.cs-controls {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.cs-ctrl-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.5rem 0.75rem;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  background: #2a2a35;
  color: var(--text-secondary);
  border: 1px solid rgba(255,255,255,0.08);
  cursor: pointer;
  transition: background 0.2s;
}

.cs-ctrl-btn:hover { background: #3a3a48; color: var(--text-primary); }

.cs-ctrl-btn.active {
  background: rgba(102, 126, 234, 0.3);
  color: #aab8ff;
  border-color: #667eea;
}

.cs-ctrl-icon { font-size: 1rem; }

/* Keypad: 1-6 + Sil, Geri al */
.cs-keypad {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.cs-num-keys {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.4rem;
}

.cs-num-keys .cs-key {
  aspect-ratio: 1;
  min-height: 44px;
  font-size: 1.1rem;
  font-weight: 700;
  border-radius: 50%;
  background: #252532;
  border: 2px solid rgba(255,255,255,0.12);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.1s, box-shadow 0.2s;
  overflow: hidden;
  padding: 0;
}
.cs-key-char {
  box-shadow: 0 0 14px var(--cs-char-color, #667eea);
}
.cs-key-img {
  width: 70%;
  height: 70%;
  object-fit: contain;
}
.cs-key-grad {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: #fff;
}

.cs-num-keys .cs-key:hover {
  box-shadow: 0 0 20px var(--cs-char-color), 0 0 8px var(--cs-char-color);
  transform: scale(1.05);
}
.cs-num-keys .cs-key:active { transform: scale(0.97); }

.cs-action-keys {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem;
}

.cs-key {
  padding: 0.6rem;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
  transition: opacity 0.2s, background 0.2s;
}

.cs-key-icon { font-size: 1.2rem; }

.cs-key-delete {
  background: rgba(67, 233, 123, 0.2);
  color: #43e97b;
  border: 1px solid rgba(67, 233, 123, 0.4);
}

.cs-key-delete:hover { background: rgba(67, 233, 123, 0.35); }

.cs-key-undo {
  background: #2a2a35;
  color: var(--text-secondary);
}

.cs-key-undo:not(:disabled):hover { background: #3a3a48; color: var(--text-primary); }
.cs-key-undo:disabled { opacity: 0.5; cursor: not-allowed; }

/* Win overlay */
.cs-win {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}

.cs-win.is-visible {
  opacity: 1;
  visibility: visible;
}

.cs-win-box {
  background: #1a1a24;
  border-radius: 16px;
  padding: 2rem;
  text-align: center;
  max-width: 320px;
  border: 1px solid rgba(67, 233, 123, 0.3);
}

.cs-win-title { font-size: 1.5rem; margin-bottom: 0.5rem; color: #43e97b; }
.cs-win-msg { color: var(--text-secondary); margin-bottom: 1.25rem; }

.cs-win-btn {
  padding: 0.65rem 1.5rem;
  border-radius: 10px;
  font-weight: 600;
  background: #43e97b;
  color: #0a0a0f;
  border: none;
  cursor: pointer;
}

.cs-win-btn:hover { filter: brightness(1.1); }

.cs-cell-hint {
  animation: cs-flash 0.6s ease;
}
@keyframes cs-flash {
  0%, 100% { background: #22222e; }
  50% { background: rgba(67, 233, 123, 0.5); }
}