/* Sudoku 2.0 — feuille de style unique et adaptative
   La grille s'adapte à la largeur disponible.
   Thèmes : data-theme="light" (défaut), "dark" ou "auto" sur le <div class="sdk-sudoku">. */

.sdk-sudoku { max-width: 780px; margin: 0 auto; }

/* ---------- Palette ---------- */
.sdk {
  --ink: #1c2333;
  --muted: #667089;
  --bg: transparent;
  --paper: #ffffff;
  --given: #f1f3f8;
  --line: #ccd3e0;
  --strong: #1c2333;
  --peer: #e0e9fa;
  --same: #ffefb3;
  --sel: #bcd5fb;
  --accent: #1f5fd6;
  --accent-ink: #ffffff;
  --ok: #1f5fd6;
  --bad: #c8283b;
  --bad-bg: #fde1e4;
  --hint: #14803f;
  --panel: #f4f6fb;
  --btn: #ffffff;
  --btn-line: #c3cbdb;
  --veil: rgba(255, 255, 255, .94);

  color: var(--ink);
  background: var(--bg);
  font: 16px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}
.sdk[data-theme="dark"] {
  --ink: #e8ecf5;
  --muted: #9aa4ba;
  --bg: #12161f;
  --paper: #171c28;
  --given: #1d2434;
  --line: #333c52;
  --strong: #c9d1e3;
  --peer: #26324a;
  --same: #4d4423;
  --sel: #28467f;
  --accent: #6ea0ff;
  --accent-ink: #0c1320;
  --ok: #86b4ff;
  --bad: #ff8190;
  --bad-bg: #4b2229;
  --hint: #62d48d;
  --panel: #1d2332;
  --btn: #232b3d;
  --btn-line: #3b4662;
  --veil: rgba(23, 28, 40, .94);
}
@media (prefers-color-scheme: dark) {
  .sdk[data-theme="auto"] {
    --ink: #e8ecf5;
    --muted: #9aa4ba;
    --bg: #12161f;
    --paper: #171c28;
    --given: #1d2434;
    --line: #333c52;
    --strong: #c9d1e3;
    --peer: #26324a;
    --same: #4d4423;
    --sel: #28467f;
    --accent: #6ea0ff;
    --accent-ink: #0c1320;
    --ok: #86b4ff;
    --bad: #ff8190;
    --bad-bg: #4b2229;
    --hint: #62d48d;
    --panel: #1d2332;
    --btn: #232b3d;
    --btn-line: #3b4662;
    --veil: rgba(23, 28, 40, .94);
  }
}
.sdk[data-theme="dark"] { padding: 16px; border-radius: 14px; }
@media (prefers-color-scheme: dark) {
  .sdk[data-theme="auto"] { padding: 16px; border-radius: 14px; }
}

.sdk *, .sdk *::before, .sdk *::after { box-sizing: border-box; }
.sdk [hidden] { display: none !important; }

/* ---------- Mise en page ---------- */
.sdk-main {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  align-items: flex-start;
  justify-content: center;
}
.sdk-plateau {
  position: relative;
  flex: 1 1 340px;
  min-width: 260px;
  max-width: 520px;
  container-type: inline-size;
}
.sdk-side {
  flex: 1 1 240px;
  max-width: 320px;
  min-width: 230px;
  display: grid;
  gap: 12px;
}

/* ---------- Grille ---------- */
.sdk .sdk-board {
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  aspect-ratio: 1;
  width: 100%;
  margin: 0;
  padding: 0;
  border: 2px solid var(--strong);
  border-radius: 6px;
  overflow: hidden;
  background: var(--paper);
  -webkit-user-select: none;
  user-select: none;
}
.sdk .sdk-cell {
  position: relative;
  display: grid;
  place-items: center;
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-size: clamp(16px, 7cqw, 38px);
  line-height: 1;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
  -webkit-tap-highlight-color: transparent;
}
.sdk .sdk-cell:nth-child(9n) { border-right: 0; }
.sdk .sdk-cell:nth-child(n+73) { border-bottom: 0; }
.sdk .sdk-cell.sdk-br { border-right: 2px solid var(--strong); }
.sdk .sdk-cell.sdk-bb { border-bottom: 2px solid var(--strong); }

.sdk .sdk-v { font-variant-numeric: tabular-nums; font-weight: 500; }
.sdk .sdk-given { background: var(--given); }
.sdk .sdk-given .sdk-v { font-weight: 700; color: var(--ink); }
.sdk .sdk-ok .sdk-v { color: var(--ok); }
.sdk .sdk-bad .sdk-v { color: var(--bad); }
.sdk .sdk-hint .sdk-v { color: var(--hint); font-weight: 700; }

.sdk .sdk-peer { background: var(--peer); }
.sdk .sdk-same { background: var(--same); }
.sdk .sdk-conf { background: var(--bad-bg); }
.sdk .sdk-conf .sdk-v { color: var(--bad); }
.sdk .sdk-sel { background: var(--sel); box-shadow: inset 0 0 0 3px var(--accent); }

.sdk .sdk-cell:focus { outline: none; }
.sdk .sdk-cell:focus-visible { outline: 3px solid var(--accent); outline-offset: -3px; }

.sdk .sdk-notes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  width: 100%;
  height: 100%;
  font-size: .42em;
  line-height: 1;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.sdk .sdk-notes i { display: grid; place-items: center; font-style: normal; }

.sdk .sdk-paused .sdk-cell > * { visibility: hidden; }

/* ---------- Voiles : pause / victoire ---------- */
.sdk .sdk-pause, .sdk .sdk-win {
  position: absolute;
  inset: 0;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 10px;
  padding: 16px;
  text-align: center;
  background: var(--veil);
  border-radius: 6px;
}
.sdk .sdk-pause p, .sdk .sdk-win p { margin: 0; }
.sdk .sdk-win h3 { margin: 0; font-size: 2rem; line-height: 1.1; font-weight: 700; }
.sdk .sdk-win-t { font-size: 1.05rem; }
.sdk .sdk-win-r { color: var(--muted); }
.sdk .sdk-pause p { font-size: 1.25rem; font-weight: 600; }
@media (prefers-reduced-motion: no-preference) {
  .sdk .sdk-win { animation: sdk-in .35s ease-out; }
  @keyframes sdk-in { from { opacity: 0; transform: scale(.97); } to { opacity: 1; transform: none; } }
  .sdk .sdk-cell { transition: background-color .12s; }
}

/* ---------- Panneau latéral ---------- */
.sdk-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.sdk .sdk-stat {
  display: grid;
  gap: 2px;
  padding: 8px 12px;
  border-radius: 10px;
  background: var(--panel);
}
.sdk .sdk-stat-l { font-size: .8rem; color: var(--muted); }
.sdk .sdk-stat-v { font-size: 1.5rem; font-weight: 700; font-variant-numeric: tabular-nums; line-height: 1.15; }

.sdk-pad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.sdk .sdk-d {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1.7;
  margin: 0;
  padding: 0;
  border: 1px solid var(--btn-line);
  border-radius: 10px;
  background: var(--btn);
  color: var(--ink);
  font: inherit;
  font-size: 1.65rem;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
  -webkit-tap-highlight-color: transparent;
}
.sdk .sdk-dr {
  position: absolute;
  right: 7px;
  bottom: 4px;
  font-size: .7rem;
  font-weight: 500;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.sdk .sdk-d.sdk-fin { opacity: .35; }

.sdk-tools { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.sdk-menu { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.sdk .sdk-lvl {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: .95rem;
}
.sdk .sdk-wide { grid-column: 1 / -1; }

.sdk .sdk-btn {
  display: block;
  margin: 0;
  min-height: 40px;
  padding: 8px 10px;
  border: 1px solid var(--btn-line);
  border-radius: 10px;
  background: var(--btn);
  color: var(--ink);
  font: inherit;
  font-size: .92rem;
  font-weight: 500;
  line-height: 1.2;
  text-align: center;
  text-transform: none;
  letter-spacing: normal;
  text-decoration: none;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
  -webkit-tap-highlight-color: transparent;
}
.sdk .sdk-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
.sdk .sdk-btn.sdk-on { background: var(--sel); border-color: var(--accent); }
.sdk .sdk-btn.sdk-armed { background: var(--bad-bg); border-color: var(--bad); color: var(--bad); }

.sdk .sdk-btn:hover:not(:disabled),
.sdk .sdk-d:hover:not(:disabled) { border-color: var(--accent); }
.sdk .sdk-primary:hover:not(:disabled) { filter: brightness(1.08); border-color: var(--accent); }
.sdk .sdk-btn:disabled,
.sdk .sdk-d:disabled { cursor: default; opacity: .45; }

.sdk button:focus-visible,
.sdk select:focus-visible,
.sdk input:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

.sdk .sdk-live { display: flex; align-items: center; gap: 8px; font-size: .92rem; cursor: pointer; }
.sdk .sdk-live input { margin: 0; width: 1.1em; height: 1.1em; accent-color: var(--accent); }

.sdk .sdk-niveau {
  min-width: 0;
  padding: 6px 8px;
  border: 1px solid var(--btn-line);
  border-radius: 8px;
  background: var(--btn);
  color: var(--ink);
  font: inherit;
  font-size: .92rem;
}
.sdk .sdk-msg { min-height: 1.4em; margin: 0; font-size: .9rem; color: var(--muted); }

/* ---------- Petits écrans ---------- */
@media (max-width: 560px) {
  .sdk-main { gap: 14px; }
  .sdk-plateau { flex-basis: 100%; max-width: none; }
  .sdk-side { flex-basis: 100%; max-width: none; }
  .sdk-pad { grid-template-columns: repeat(9, 1fr); gap: 4px; }
  .sdk .sdk-d { aspect-ratio: .72; border-radius: 8px; font-size: 1.35rem; }
  .sdk .sdk-dr { right: 50%; transform: translateX(50%); bottom: 4px; font-size: .62rem; }
  .sdk .sdk-dn { margin-top: -8px; }
}