/* =====================================================================
   SUDOKA — Калькудоку
   Стили игры, scoped под .cdk-root
   ===================================================================== */

/* ---------- Корневой контейнер ---------- */
.cdk-root {
  --cdk-cell: clamp(44px, 12vw, 64px);
  user-select: none;
}

/* ---------- Шапка игры ---------- */
.cdk-head h1 { font-size: clamp(1.6rem, 4vw, 2.2rem); }
.cdk-head p  { color: var(--ink-muted); margin-bottom: 1.2rem; max-width: 560px; }

/* ---------- Панель управления ---------- */
.cdk-toolbar {
  display: flex; flex-wrap: wrap; align-items: center; gap: .8rem;
  margin-bottom: 1rem;
}

.cdk-difficulty {
  display: flex; gap: .35rem;
}
.cdk-diff-btn {
  padding: .45rem .85rem; border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg); color: var(--ink-muted);
  font-weight: 700; font-size: .88rem;
  transition: background .15s, color .15s, border-color .15s;
}
.cdk-diff-btn:hover { background: var(--terracotta-l); color: var(--terracotta-d); border-color: var(--terracotta); }
.cdk-diff-btn.active { background: var(--terracotta); color: #fff; border-color: var(--terracotta); }

.cdk-actions { display: flex; gap: .45rem; margin-left: auto; flex-wrap: wrap; }

/* ---------- Статистика ---------- */
.cdk-stats {
  display: flex; gap: 1.6rem; margin-bottom: .8rem;
  font-size: .92rem; color: var(--ink-muted);
}
.cdk-stats b { color: var(--ink); font-weight: 700; }

/* ---------- Игровое поле ---------- */
.cdk-grid-wrap {
  display: flex; justify-content: center;
}
.cdk-grid {
  display: grid;
  grid-template-columns: repeat(var(--cdk-cols, 6), var(--cdk-cell));
  grid-template-rows: repeat(var(--cdk-cols, 6), var(--cdk-cell));
  border: 3px solid var(--ink);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--ink);
}
.cdk-cell {
  position: relative;
  display: flex; align-items: center; justify-content: center;
  background: var(--card);
  cursor: pointer;
  font-weight: 700; font-size: clamp(1.2rem, 4vw, 1.6rem);
  color: var(--ink);
  transition: background .1s;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  border: 1px solid var(--border);
}
.cdk-cell:hover { background: var(--bg-alt); }
.cdk-cell.cdk-selected { background: var(--terracotta-l); box-shadow: inset 0 0 0 2px var(--terracotta); }
.cdk-cell.cdk-same-num { background: var(--sage-l); }
.cdk-cell.cdk-conflict { background: var(--danger-l); color: var(--danger); }

.cdk-cell .cdk-cage-label {
  position: absolute; top: 1px; left: 2px;
  font-size: .62rem; font-weight: 800;
  color: var(--ink-muted);
  line-height: 1;
  pointer-events: none;
  z-index: 1;
}

/* Внутри клетки — убрать общие границы */
.cdk-no-border-top    { border-top: none; }
.cdk-no-border-bottom { border-bottom: none; }
.cdk-no-border-left   { border-left: none; }
.cdk-no-border-right  { border-right: none; }

/* Клетка с толстой границей снаружи (края поля) */
.cdk-grid .cdk-cell:nth-child(-n+var(--cdk-cols)) { border-top: var(--cdk-grid-border, 3px) solid var(--ink); }
.cdk-grid .cdk-cell:nth-last-child(-n+var(--cdk-cols)) { border-bottom: var(--cdk-grid-border, 3px) solid var(--ink); }
.cdk-grid .cdk-cell:nth-child(n) { /* override only specific edges */ }

/* ---------- Цифровая панель ---------- */
.cdk-numpad {
  display: flex; justify-content: center; gap: .5rem; flex-wrap: wrap;
  margin-top: 1rem; margin-bottom: .6rem;
}
.cdk-num-btn {
  width: 44px; height: 44px; border-radius: 50%;
  border: 2px solid var(--border);
  background: var(--card);
  color: var(--ink); font-weight: 800; font-size: 1.1rem;
  display: flex; align-items: center; justify-content: center;
  transition: background .1s, border-color .1s, transform .05s;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.cdk-num-btn:hover { background: var(--terracotta-l); border-color: var(--terracotta); }
.cdk-num-btn:active { transform: scale(.94); }

.cdk-numpad-extra {
  display: flex; justify-content: center; gap: .5rem;
  margin-bottom: 1.2rem;
}
.cdk-extra-btn {
  padding: .45rem .85rem; border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg); color: var(--ink-muted);
  font-weight: 700; font-size: .88rem;
  transition: background .15s, color .15s, border-color .15s;
}
.cdk-extra-btn:hover { background: var(--danger-l); color: var(--danger); border-color: var(--danger); }
.cdk-extra-btn.cdk-active { background: var(--sage-l); color: var(--sage-d); border-color: var(--sage); }

/* ---------- Сообщения ---------- */
.cdk-message {
  text-align: center; padding: .8rem; margin-bottom: .8rem;
  border-radius: var(--radius-sm); font-weight: 700; font-size: .95rem;
  display: none;
}
.cdk-message.cdk-msg-error  { display: block; background: var(--danger-l); color: var(--danger); }
.cdk-message.cdk-msg-info   { display: block; background: var(--terracotta-l); color: var(--terracotta-d); }
.cdk-message.cdk-msg-success{ display: block; background: var(--sage-l); color: var(--sage-d); }

/* ---------- Модалка победы ---------- */
.cdk-win-overlay {
  display: none; position: fixed; inset: 0; z-index: 100;
  background: rgba(58, 46, 42, 0.55);
  align-items: center; justify-content: center;
}
.cdk-win-overlay.cdk-visible { display: flex; }

.cdk-win-dialog {
  background: var(--card); border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  text-align: center; box-shadow: var(--shadow-lg);
  max-width: 380px; width: 90vw;
}
.cdk-win-dialog h2 { font-size: 1.5rem; margin-bottom: .6rem; color: var(--sage-d); }
.cdk-win-dialog p  { color: var(--ink-muted); margin-bottom: 1.2rem; }

/* ---------- Помощь ---------- */
.cdk-help {
  margin-top: 1rem; font-size: .85rem; color: var(--ink-muted);
}
.cdk-help kbd {
  display: inline-block; padding: .08rem .4rem;
  border-radius: 4px; background: var(--bg-alt); border: 1px solid var(--border);
  font-size: .8rem; font-family: inherit;
}

/* ---------- Калькудоку-правила ---------- */
.cdk-rules {
  margin-top: 2rem; padding-top: 1.2rem; border-top: 1px solid var(--border);
}
.cdk-rules h2 { font-size: 1.1rem; margin-bottom: .5rem; }
.cdk-rules ul { padding-left: 1.3rem; color: var(--ink-muted); font-size: .92rem; }
.cdk-rules li { margin-bottom: .25rem; }

/* ---------- Адаптив ---------- */
@media (max-width: 480px) {
  .cdk-toolbar { flex-direction: column; align-items: stretch; }
  .cdk-actions { margin-left: 0; justify-content: center; }
  .cdk-stats { justify-content: center; }
}