body {
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial;
  margin: 0;
  background-color: #f3f3f3;
  color: #000;
}

.header {
  font-family: serif;
  font-weight: bold;
  text-align: center;
  margin-top: 1.5rem;
}

.header-link {
  text-decoration: underline;
  font-size: 2rem;
  color: rgb(44 153 206);
}

.container {
  display: flex;
  justify-content: center;
  padding: 1.5rem;
  min-height: 80vh;
  margin-bottom: 3rem;
  
}

.card {
  background-color: #e5e7eb;
  border: 1px solid #d1d5db;
  border-radius: 2rem;
  width: 100%;
  max-width: 1050px;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 1.5rem;
  align-items: center;
}

.top-buttons {
  display: flex;
  justify-content: flex-end;
  width: 100%;
}

.editor-section {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-right: 1.5rem;
}

.editor-label {
  font-weight: 500;
}

#codeEditor {
  width: 100%;
  min-height: 200px;
  padding: 0.75rem;
  border-radius: 0.5rem;
  font-family: monospace;
  font-size: 0.875rem;
}

.tip-text {
  font-size: 0.75rem;
  color: gray;
}

.control-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.updown-buttons {
  display: flex;
  gap: 0.75rem;
}

.validation-message {
  color: green;
  font-weight: 600;
}

.btn-green {
  background-color: #16a34a;
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 1.5rem;
  cursor: pointer;
  border: none;
}

.btn-blue {
  background-color: rgb(44 153 206);
  padding: .5rem .9rem;
  border-radius: 999px;
  border: none;
  color:white;
  cursor:pointer;
  box-shadow: 0 6px 18px rgba(2,6,23,0.08);
  transition: transform .12s ease, background-color .12s ease, box-shadow .12s;
  font-weight:600;
}

.btn-blue:hover {
  background-color: #1e3a8a;
}

.btn-red {
  background-color: #ef4444;
  padding: .5rem .9rem;
  border-radius: 999px;
  border: none;
  color:white;
  cursor:pointer;
  box-shadow: 0 6px 18px rgba(2,6,23,0.08);
  transition: transform .12s ease, background-color .12s ease, box-shadow .12s;
  font-weight:600;
}

.btn-red:hover {
  background-color: #dc2626;
}

.btn-yellow {
  background-color: #f59e0b;
  padding: .5rem .9rem;
  border-radius: 999px;
  border: none;
  color:white;
  cursor:pointer;
  box-shadow: 0 6px 18px rgba(2,6,23,0.08);
  transition: transform .12s ease, background-color .12s ease, box-shadow .12s;
  font-weight:600;
}

.btn-yellow:hover {
  background-color: #d97706;
}

.btn-disabled {
  background-color: #94a3b8;
  padding: .5rem .9rem;
  border-radius: 999px;
  border: none;
  color:white;
  cursor:not-allowed;
  box-shadow: 0 6px 18px rgba(2,6,23,0.08);
  transition: transform .12s ease, background-color .12s ease, box-shadow .12s;
  font-weight:600;
}

.seven-seg {
  margin-top: 1rem;
  width: 100px;
  height: 180px;
  background-color: black;
  padding: 10px 10px 1px 15px;
  border-radius: 0.5rem;
}

.popup {
  position: fixed;
  inset: 0;
  background-color: rgba(0,0,0,0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 50;
}

.popup-content {
  background-color: white;
  padding: 0.5rem 1.5rem;
  border-radius: 1.5rem;
  height: 80vh;
  max-width: 650px;
  width: 90%;
}

.popups {
  position: fixed;
  inset: 0;
  background-color: rgba(0,0,0,0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 50;
}

.popups-content {
  background-color: white;
  padding: 10px 1rem 10px 1rem;
  border-radius: 1.5rem;
  height: auto;
  overflow: auto;
  max-width: 800px;
  width: 90%;
}

.popupi {
  position: fixed;
  inset: 0;
  background-color: rgba(0,0,0,0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 50;
}

.popupi-content {
  background-color: white;
  padding: 1rem ;
  border-radius: 1.5rem;
  height: 80vh;
  max-width: 450px;
  width: 90%;
}

.abc{
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-left: 20px;
}

#sampleCodeBlock{
  height: 60vh;
  overflow: auto;
  background-color: #dce1ea;
  padding: 5px;
  border-radius: 0.5rem;
}

.heading{
  margin: 10px 0px 3px 0px;
  font-size: large;
}

.diagram{
  text-align: center;
}

.scrollable {
  max-height: 80vh;
  overflow-y: auto;
}

.popup-buttons {
  margin-top: 1rem;
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
}

.hidden {
  display: none;
}

footer {
  position: fixed;
  bottom: 0;
  width: 100%;
  background-color: #1f2937;
  color: white;
  text-align: center;
  font-weight: bold;
  padding: 0.75rem;
  font-size: 0.875rem;
}