Sudoku/style.css at main · pankajjoshi1005/Sudoku · GitHub

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* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden; /* 🚫 no scrolling */
  touch-action: manipulation;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #ffffff;
}
.hide-board {
  display: none;
}
/* App container */
body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
}

/* Title */
h1 {
  margin: 10px 0 6px;
  font-size: 22px;
}

/* Menu + Top bar */
#menu,
#top-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 8px;
}

#menu button,
#top-bar button {
  padding: 6px 14px;
  border-radius: 18px;
  border: none;
  background: #f1f1f1;
  font-size: 14px;
}

#timer, #lives {
  font-size: 14px;
}

.hidden {
  display: none;
}

/* ======================= */
/* Sudoku Grid (LOCKED)    */
/* ======================= */

#sudoku {
  width: min(92vmin, 360px);
  height: min(92vmin, 360px);
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  grid-template-rows: repeat(9, 1fr);
  border: 3px solid #000;
}

/* Cells */
.cell {
  width: 100%;
  height: 100%;
  border: 1px solid #bbb;
  text-align: center;
  font-size: clamp(16px, 4.5vmin, 20px);
  font-weight: 500;
  outline: none;
  background: #fff;
  padding: 0;
}

/* Fixed cells */
.cell:disabled {
  background: #f2f2f2;
  color: #555;
  font-weight: 700;
}

/* Wrong input */
.invalid {
  background: #ffd6d6;
}

/* ======================= */
/* 3×3 BLOCK BORDERS       */
/* ======================= */

/* Vertical block borders */
.cell:nth-child(9n + 4),
.cell:nth-child(9n + 7) {
  border-left: 2px solid #000;
}

/* Horizontal block borders */
.cell:nth-child(n + 28):nth-child(-n + 36),
.cell:nth-child(n + 55):nth-child(-n + 63) {
  border-top: 2px solid #000;
}

/* Message */
#message {
  margin-top: 10px;
  font-size: 16px;
  font-weight: 600;
  text-align: center;
  white-space: pre-line;
}