/* Sayı Yılanı (kidsNumberSnake). Every rule is scoped under .kp-number-snake. The stage paints its own light
   paper and dark ink, so it reads the same in the light and the dark site theme. */
.kp-number-snake {
  --ns-ink: #1f3340;
  --ns-paper: #f7fbfc;
  --ns-sky: #dff1f7;
  --ns-rim: #3d7f99;
  --ns-deep: #1d5a72;
  --ns-focus: #1f5f9e;
  --ns-mint: #d5f3e4;
  --ns-mint-deep: #2a7752;
  --ns-given: #e6edf1;
  --ns-warn: #8a4b00;
  /* The site paints paragraphs with --k-ink-2 (pale, for dark pages); this paper needs the dark ink instead. */
  --k-ink-2: var(--ns-ink);
  display: block;
  box-sizing: border-box;
  width: 100%;
  max-width: 980px;
  margin: 0 auto;
  padding: 16px;
  border-radius: 20px;
  background: var(--ns-paper);
  color: var(--ns-ink);
  color-scheme: light;
  line-height: 1.5;
  overflow-wrap: anywhere;
}
.kp-number-snake * { box-sizing: border-box; }
.kp-number-snake p { color: var(--ns-ink); margin: 0 0 8px; }
.kp-number-snake ol, .kp-number-snake ul { margin: 0; padding: 0; list-style: none; }
.kp-number-snake button { font: inherit; cursor: pointer; }
.kp-number-snake button:focus-visible { outline: 3px solid var(--ns-focus); outline-offset: 3px; }
.kp-number-snake .screen-only { display: block; }
.kp-number-snake .print-only { display: none; }
.kp-number-snake .kp-subheading { margin: 14px 0 8px; font-size: 1rem; color: var(--ns-ink); }

.kp-number-snake .kp-intro { margin: 0 0 8px; }
.kp-number-snake .kp-intro > summary { cursor: pointer; font-weight: 700; color: var(--ns-ink); min-height: 48px; display: flex; align-items: center; }
.kp-number-snake .kp-instruction { margin: 0 0 6px; font-size: 1.05rem; }
.kp-number-snake .kp-howto { margin: 0 0 10px; }

.kp-number-snake .kp-levels,
.kp-number-snake .kp-controls { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 12px; }
.kp-number-snake .kp-levels button,
.kp-number-snake .kp-controls button {
  min-height: 48px; padding: 8px 16px; border-radius: 999px; border: 2px solid var(--ns-rim);
  background: #ffffff; color: var(--ns-ink); font-weight: 700;
}
.kp-number-snake .kp-levels button[aria-pressed="true"] { background: var(--ns-sky); border-color: var(--ns-deep); }
.kp-number-snake .kp-controls button:disabled { opacity: .5; cursor: default; }

.kp-number-snake .kp-work { display: grid; gap: 14px; justify-items: center; }
.kp-number-snake .kp-board-wrap { width: 100%; display: flex; justify-content: center; }

/* Grid sizes come from classes, not inline styles: 4, 5 or 6 squares per side. */
.kp-number-snake .kp-grid { display: grid; gap: 4px; width: min(100%, 340px); }
.kp-number-snake .kp-grid.kp-side-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.kp-number-snake .kp-grid.kp-side-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.kp-number-snake .kp-grid.kp-side-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }

.kp-number-snake .kp-cell {
  display: grid; place-items: center; width: 100%; aspect-ratio: 1 / 1;
  min-width: 40px; min-height: 40px; border-radius: 12px; font-size: clamp(1.05rem, 4vw, 1.5rem); font-weight: 800;
  color: var(--ns-ink); line-height: 1;
}
.kp-number-snake button.kp-cell {
  border: 3px dashed var(--ns-rim); background: #ffffff;
}
.kp-number-snake button.kp-cell[data-filled="true"] { border-style: solid; background: var(--ns-mint); border-color: var(--ns-mint-deep); }
.kp-number-snake button.kp-cell[data-selected="true"] { outline: 3px solid var(--ns-focus); outline-offset: 2px; }
.kp-number-snake .kp-cell.kp-given { background: var(--ns-given); border: 2px solid var(--ns-rim); }

.kp-number-snake .kp-tray {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; padding: 12px; width: 100%;
  border-radius: 16px; background: var(--ns-sky);
}
.kp-number-snake .kp-token {
  min-width: 48px; min-height: 48px; padding: 6px 10px; border-radius: 14px;
  border: 2px solid var(--ns-deep); background: #ffffff; color: var(--ns-ink); font-size: 1.3rem; font-weight: 800;
}
.kp-number-snake .kp-token[aria-pressed="true"] { background: var(--ns-deep); color: #ffffff; }

.kp-number-snake .kp-status { min-height: 3em; font-weight: 700; color: var(--ns-deep); }
.kp-number-snake .kp-status:focus-visible { outline: 3px solid var(--ns-focus); outline-offset: 3px; }
.kp-number-snake .kp-status[data-solved="true"] { color: var(--ns-mint-deep); font-size: 1.15rem; }

.kp-number-snake .kp-trains { margin-top: 12px; padding: 12px 14px; border-radius: 14px; background: var(--ns-sky); }
.kp-number-snake .kp-trains p { margin: 0 0 6px; }
.kp-number-snake .kp-trains .kp-why { font-weight: 600; }
.kp-number-snake .kp-trains .kp-why-label { font-weight: 700; }

@media (max-width: 359px) {
  .kp-number-snake { padding: 8px; }
  .kp-number-snake .kp-grid { gap: 3px; }
  /* 320 px: 5×5 ve 4×4 tahtada kare 48 px'e ulaşır; 6×6 genişlikte ~43 px kalır (belgelenmiş takas). */
  .kp-number-snake .kp-cell { min-width: 0; min-height: 48px; }
}

@media print {
  .kp-number-snake { background: #ffffff; color: #000000; box-shadow: none; padding: 0; }
  .kp-number-snake .screen-only { display: none; }
  .kp-number-snake .print-only { display: block; color: #000000; }
  .kp-number-snake .print-only p { color: #000000; font-size: 1.1rem; }
  .kp-number-snake .kp-print-grid { display: grid; gap: 6px; width: 70%; margin: 16px 0; }
  .kp-number-snake .kp-print-grid.kp-side-4 { grid-template-columns: repeat(4, 1fr); }
  .kp-number-snake .kp-print-grid.kp-side-5 { grid-template-columns: repeat(5, 1fr); }
  .kp-number-snake .kp-print-grid.kp-side-6 { grid-template-columns: repeat(6, 1fr); }
  .kp-number-snake .kp-print-cell { border: 2px solid #000000; min-height: 48px; display: grid; place-items: center; font-size: 1.3rem; font-weight: 700; color: #000000; }
}

@media (prefers-reduced-motion: reduce) {
  .kp-number-snake * { transition: none !important; animation: none !important; }
}