body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f4f4f9;
  color: #333;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

header {
  text-align: center;
  padding: 10px;
}

header h1 {
  margin: 0 0 10px;
}

/* Subject + Section in one line */
.meta-line {
  display: flex;
  justify-content: space-between;
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.1em;
}
.meta-line label {
  font-weight: bold;
}

/* Table layout */
#table-container {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: flex-start;
  flex: 1;
  padding: 10px;
  box-sizing: border-box;
}

.column {
  display: flex;
  flex-direction: column;
}

/* Each column has 10 rows max visible in full screen */
.table-header, .row {
  display: grid;
  grid-template-columns: 50px 100px 60px 60px;
  align-items: center;
  text-align: center;
  margin-bottom: 4px;
  padding: 4px;
  border-radius: 6px;
  box-sizing: border-box;
}

/* Fit 10 rows + 1 header inside viewport height */
.table-header {
  font-weight: bold;
  background: #ddd;
  height: calc((100vh - 180px) / 11); /* header row */
}

.row {
  background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  transition: all 0.2s ease;
  height: calc((100vh - 180px) / 11); /* each row fits evenly */
}
.number{
  font-size: 1.2em;
  font-weight:bolder !important;
}

#table-container .row:hover {
  background: #e6f7ff;
  transform: scale(1.02);
  z-index: 1;
}

/* Footer with total + controls in one line */
.footer-line {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 20px;
  font-size: 1.1em;
  font-weight: bold;
  background: #fafafa;
  border-top: 1px solid #ccc;
}


.btn {
  border: none;
  padding: 6px 10px;
  cursor: pointer;
  font-size: 16px;
  font-weight: bold;
  color: white;
  margin: 0 3px;
  border-radius: 6px;
  min-width: 36px;
  transition: transform 0.1s ease-in-out;
}
.btn:hover {
  transform: scale(1.1);
}
.btn.add { background: #4CAF50; }
.btn.add:hover { background: #45a049; }
.btn.minus { background: #f44336; }
.btn.minus:hover { background: #e53935; }

footer input,
footer button {
  margin-left: 4px;
}