/* ── Calendar Puzzle ─────────────────────────────────────────────────────── */

.calendar-puzzle-wrapper {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

/* ── Game layout: side-by-side piece tray + board ────────────────────────── */
.cal-game-layout {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  gap: 16px;
}

.cal-board-column {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

/* ── Date picker ─────────────────────────────────────────────────────────── */
.cal-date-picker-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.cal-date-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--blue);
}

.cal-date-input {
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 0.95rem;
  font-family: var(--font-body);
  cursor: pointer;
  transition: border-color var(--transition);
  text-align: center;
}

.cal-date-input:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.cal-date-display {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ── Board ───────────────────────────────────────────────────────────────── */
.cal-board {
  --cal-cell: 50px;
  display: grid;
  grid-template-columns: repeat(7, var(--cal-cell));
  gap: 3px;
  user-select: none;
  touch-action: none;
}

.cal-cell {
  width: var(--cal-cell, 50px);
  height: var(--cal-cell, 50px);
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.08s, transform 0.08s;
  box-sizing: border-box;
  position: relative;
}

.cal-cell-label {
  pointer-events: none;
  font-size: 0.7rem;
  font-weight: 500;
  line-height: 1.1;
  text-align: center;
}

.cal-cell--blocked {
  background: transparent !important;
  border: none !important;
  pointer-events: none;
  cursor: default !important;
}

.cal-cell--target {
  background: #fff9c4;
  border: 2px solid #f9a825;
  color: #5a3e00;
  font-weight: 700;
}

.cal-cell--empty {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.cal-cell--placed {
  border: 2px solid rgba(0, 0, 0, 0.28);
  color: white;
  font-weight: 700;
  transition: filter 0.15s;
}

.cal-cell--placed:hover {
  filter: brightness(1.15);
}

.cal-cell--preview-valid {
  background: rgba(37, 99, 235, 0.28) !important;
  border: 2px dashed var(--blue) !important;
}

.cal-cell--preview-invalid {
  background: rgba(220, 38, 38, 0.2) !important;
  border: 2px dashed #dc2626 !important;
}

.cal-cell--conflict {
  background: #dc2626 !important;
  border: 2px solid #991b1b !important;
  cursor: grab;
}

/* ── Win / no-solution banners ───────────────────────────────────────────── */
.cal-win-banner {
  background: #16a34a;
  color: #ffffff;
  padding: 10px 32px;
  border-radius: 24px;
  font-weight: 700;
  font-size: 1rem;
  text-align: center;
  animation: calPop 0.25s ease;
}

@keyframes calPop {
  from { transform: scale(0.85); opacity: 0; }
  to   { transform: scale(1);    opacity: 1; }
}

.cal-no-solutions {
  color: #dc2626;
  font-size: 0.875rem;
  font-weight: 600;
  text-align: center;
  padding: 8px 20px;
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 8px;
}

/* ── Controls ────────────────────────────────────────────────────────────── */
.cal-controls {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

/* ── Solution Panel ──────────────────────────────────────────────────────── */
.cal-solution-panel {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 20px;
  width: 100%;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.cal-solution-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.cal-solution-panel-title {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
  color: var(--text-muted);
}

.cal-solution-panel-nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

.cal-sol-arrow {
  background: var(--blue);
  color: #ffffff;
  border: none;
  border-radius: 8px;
  padding: 6px 20px;
  cursor: pointer;
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.4;
  transition: background 0.15s;
}

.cal-sol-arrow:hover:not(:disabled) {
  background: #1d4ed8;
}

.cal-sol-arrow:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.cal-sol-count {
  font-weight: 600;
  color: var(--text);
  font-size: 0.9rem;
  min-width: 150px;
  text-align: center;
}

.cal-solution-back-btn {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 12px;
  font-size: 0.78rem;
  font-family: var(--font-body);
  cursor: pointer;
  transition: color 0.15s, background 0.15s;
}

.cal-solution-back-btn:hover {
  color: var(--text);
  background: var(--bg-card);
}

/* ── Piece tray ──────────────────────────────────────────────────────────── */
.cal-piece-tray {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 10px;
  box-sizing: border-box;
  /* Side panel: fixed width, scrolls if needed */
  width: 140px;
  flex-shrink: 0;
}

.cal-piece-tray-label {
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--blue);
  text-align: center;
  margin-bottom: 10px;
  font-weight: 600;
}

.cal-pieces-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.cal-piece-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  transition: opacity 0.2s;
}

.cal-piece-wrapper.cal-piece--used {
  opacity: 0.25;
}

.cal-rotate-btn {
  background: var(--bg-card);
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 3px 10px;
  font-size: 0.82rem;
  font-family: var(--font-body);
  cursor: pointer;
  transition: background 0.12s, color 0.12s;
}

.cal-rotate-btn:hover:not(:disabled) {
  background: var(--blue);
  color: #ffffff;
  border-color: var(--blue);
}

.cal-rotate-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}


/* ── Dark mode ───────────────────────────────────────────────────────────── */
[data-theme="dark"] .cal-cell--target {
  background: #451a03;
  border-color: #d97706;
  color: #fbbf24;
}

[data-theme="dark"] .cal-cell--empty {
  background: #1c2333;
  border-color: #30363d;
  color: #8b949e;
}

[data-theme="dark"] .cal-no-solutions {
  background: rgba(220, 38, 38, 0.1);
  border-color: rgba(220, 38, 38, 0.3);
  color: #f87171;
}

/* ── Responsive ──────────────────────────────────────────────────────────── */

/* Tablet and below: stack piece tray below board */
@media (max-width: 700px) {
  .cal-game-layout {
    flex-direction: column;
    align-items: center;
  }

  .cal-piece-tray {
    width: 100%;
    max-width: 400px;
  }

  .cal-pieces-grid {
    gap: 12px;
  }
}

@media (max-width: 520px) {
  .cal-board {
    --cal-cell: 42px;
  }

  .cal-cell-label {
    font-size: 0.6rem;
  }
}

@media (max-width: 380px) {
  .cal-board {
    --cal-cell: 34px;
  }

  .cal-cell-label {
    font-size: 0.54rem;
  }
}