/* ==========================================================================
   css/exam-layout.css - Supplementary CBT Fullscreen Grid and Calculator Styles
   ========================================================================== */

.calc-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
}

.calc-btn {
  height: 40px;
  border-radius: 6px;
  border: 1px solid var(--card-border);
  background: var(--page-bg);
  font-weight: 600;
  cursor: pointer;
}

.calc-btn:hover {
  background: #EAF1FF;
  border-color: var(--brand-primary);
}

.calc-display {
  width: 100%;
  height: 44px;
  border: 1px solid var(--input-border);
  border-radius: 6px;
  margin-bottom: 0.75rem;
  padding: 0 0.5rem;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 1.125rem;
  background: #FFFFFF;
}

.scratchpad-canvas {
  width: 100%;
  height: 200px;
  border: 1px solid var(--card-border);
  border-radius: 6px;
  background: #FFFFFF;
  touch-action: none;
}