:root {
  --cell-size: 55px;
  --thick-border: 3px solid #000;
  --thin-border: 1px solid #ccc;
}

body {
  padding-top: 80px;
}

.suguru-container {
  max-width: fit-content;
  margin: 20px auto;
}

/* dit zit in elke programma apart gedefinieerd omdat de repeat niet standaard is.
 .suguru-grid {
        display: grid;
        grid-template-columns: repeat(<?php echo $xAs; ?>, var(--cell-size));
        grid-template-rows: repeat(<?php echo $Yas; ?>, var(--cell-size));
        border: var(--thick-border);
        background-color: #000;
        gap: 0;
    }
*/
.cell {
  width: var(--cell-size);
  height: var(--cell-size);
  background-color: #fff;
  position: relative;
  border: var(--thin-border);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cell.focus {
  background: lightgreen;
}

.cell.fixed {
  color: black;
}

/* Het grote getal */
.main-number {
  font-size: 2rem;
  font-weight: bold;
  z-index: 2;
  color: blue;
}

.main-number.fout {
  color: red;
}

/* De kleine nootjes */
.notes-grid {
  position: absolute;
  top: 2px;
  left: 2px;
  right: 2px;
  bottom: 2px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, 1fr);
  pointer-events: none;
  /* Klikken gaat door naar de cel */
  line-height: 1;
}

.note-digit {
  font-size: 0.9rem;
  color: #666;
  display: none;
  /* Standaard verborgen */
  text-align: center;
}

.note-digit.visible {
  display: block;
}

.cell.has-main .note-digit {
  display: none;
}

/* Verberg nootjes als er een getal staat */

/* Randen en Kleuren */
.hint {
  color: #2e7d32 !important;
}

.bt {
  border-top: var(--thick-border);
}

.bb {
  border-bottom: var(--thick-border);
}

.bl {
  border-left: var(--thick-border);
}

.br {
  border-right: var(--thick-border);
}

/* Actieve knop styling */
.btn-check:checked + .btn {
  background-color: #0d6efd;
  color: white;
}

/* Radio buttons: 50x50 en verticaal onder elkaar */
.btn-fixed {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
  /* Kleine witruimte tussen de radio-knoppen */
}