body {
  font-family: 'Inter', sans-serif;
}

/* buttons */
.btn-primary {
  background: #2563eb;
  color: white;
  padding: 8px 14px;
  border-radius: 8px;
}

.btn-secondary {
  background: #e5e7eb;
  padding: 8px 14px;
  border-radius: 8px;
}

/* grid */
.grid-container {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  border: 1px solid #e5e7eb;
}

.cell {
  border: 1px solid #e5e7eb;
  min-height: 90px;
  padding: 6px;
}

.subject {
  width: 100%;
  height: 100%;
  border-radius: 6px;
  color: white;
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* MODAL */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  display: flex;
  justify-content: center;
  align-items: center;
}

.modal.hidden {
  display: none;
}

.modal-box {
  background: white;
  padding: 20px;
  border-radius: 12px;
  width: 300px;
}

.modal-input {
  width: 100%;
  border: 1px solid #ddd;
  padding: 8px;
  margin-top: 10px;
  border-radius: 6px;
}