/* Gauss-Jordan Calculator Styles */
.gauss-card {
  width: 75%;
}
.matrix-controls {
  display: flex;
  gap: 15px;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.matrix-controls label {
  display: flex;
  align-items: center;
  gap: 8px;
}

.matrix-controls input[type="number"] {
  width: 60px;
  padding: 5px;
  border: 1px solid var(--border-card);
  background: var(--bg-button);
  color: var(--text-primary);
  border-radius: 4px;
}

.matrix-container {
  overflow-x: auto;
  margin: 20px 0;
  max-height: 25em;
}

.matrix-table {
  border-collapse: separate;
  border-spacing: 4px;
  margin: 0 auto;
}

.matrix-table td {
  min-width: 60px;
  padding: 0;
}

.matrix-table input {
  padding: 8px;
  border: 2px solid var(--border-card);
  background: var(--bg-button);
  color: var(--text-primary);
  border-radius: 4px;
  text-align: center;
  font-size: 1rem;
  transition: all 0.2s;
}

.matrix-table input:focus {
  outline: none;
  border-color: var(--color-success);
  box-shadow: 0 0 5px var(--color-success);
}

.matrix-table .row-label {
  font-weight: bold;
  font-size: 1.1rem;
  text-align: center;
  vertical-align: middle;
  padding: 8px 12px;
  background: var(--bg-button-home);
  color: var(--text-primary);
  border-radius: 4px;
  cursor: grab;
  user-select: none;
  min-width: 40px;
}

.matrix-table .row-label:active {
  cursor: grabbing;
}

.matrix-table tr.dragging {
  opacity: 0.5;
}

.matrix-table tr.drag-over {
  background: var(--bg-success);
}

.matrix-table tr.active-row {
  background: var(--bg-success);
}

.matrix-table tr.active-row input {
  border-color: var(--color-success);
  background: var(--bg-success);
}

.matrix-table input.pivot-element {
  border-color: var(--color-warning);
  background: var(--bg-warning);
  font-weight: bold;
}

.matrix-table input.changed-value {
  animation: highlight-change 1s ease-out;
}

@keyframes highlight-change {
  0% {
    background: var(--bg-highlight);
  }
  100% {
    background: transparent;
  }
}

.operation-controls {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.operation-input-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.operation-input-group label {
  font-weight: 500;
}

.operation-input-group input[type="text"] {
  padding: 10px;
  border: 1px solid var(--border-card);
  background: var(--bg-button);
  color: var(--text-primary);
  border-radius: 4px;
  font-size: 1rem;
}

.quick-operations, .auto-solve {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.quick-operations h3, .auto-solve h3 {
  width: 100%;
  margin: 0 0 5px 0;
  font-size: 1.1rem;
}

.operation-feedback {
  margin-top: 15px;
  padding: 10px;
  border-radius: 4px;
  min-height: 30px;
}

.operation-feedback.success {
  background: var(--bg-success);
  color: var(--text-success);
  border: 1px solid var(--border-success);
}

.operation-feedback.error {
  background: var(--bg-error);
  color: var(--text-error);
  border: 1px solid var(--border-error);
}

.operation-feedback.info {
  background: var(--bg-info);
  color: var(--text-info);
  border: 1px solid var(--border-info);
}

.history-controls {
  display: flex;
  gap: 10px;
  margin-bottom: 15px;
  flex-wrap: wrap;
}

.history-display {
  max-height: 150px;
  overflow-y: auto;
  border: 1px solid var(--border-card);
  border-radius: 4px;
  padding: 10px;
  background: var(--bg-button-home);
  color: var(--text-primary);
}

.history-item {
  padding: 5px 0;
  border-bottom: 1px solid var(--border-card);
  font-family: monospace;
  font-size: 0.9rem;
}

.history-item:last-child {
  border-bottom: none;
}

.solution-display {
  padding: 15px;
  background: var(--bg-button-home);
  border: 1px solid var(--border-card);
  color: var(--text-primary);
  border-radius: 4px;
  min-height: 100px;
}

.solution-display .solution-header {
  font-weight: bold;
  margin-bottom: 10px;
  font-size: 1.1rem;
}

.solution-display .solution-vector {
  font-family: monospace;
  margin: 10px 0;
  padding: 10px;
  background: var(--bg-card);
  border-left: 3px solid var(--color-success);
}

.solution-display .no-solution {
  color: var(--color-error);
  font-weight: 500;
}

.solution-display .infinite-solutions {
  color: var(--color-info);
  font-weight: 500;
}

.solution-display .solution-conditions {
  margin-top: 15px;
}

.solution-display .solution-conditions p {
  margin: 8px 0;
}

.import-export {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border-card);
}

.import-export h3 {
  margin: 0 0 10px 0;
  font-size: 1.1rem;
}

.import-export button {
  margin-right: 10px;
  margin-bottom: 10px;
}

.primary-btn {
  background: var(--color-success) !important;
  color: white !important;
  font-weight: bold;
}

.primary-btn:hover {
  background: var(--color-success-hover) !important;
}

.help-content ul {
  line-height: 1.8;
}

.help-content h3 {
  margin-top: 15px;
  margin-bottom: 10px;
}

.help-content strong {
  color: var(--text-primary);
}

/* Fraction display */
.fraction {
  display: inline-block;
  vertical-align: middle;
  text-align: center;
}

.fraction .numerator {
  display: block;
  border-bottom: 1px solid var(--text-primary);
  padding: 0 3px;
}

.fraction .denominator {
  display: block;
  padding: 0 3px;
}

/* Responsive design */
@media (max-width: 768px) {
  .matrix-table input {
    min-width: 50px;
    padding: 5px;
    font-size: 0.9rem;
  }
  
  .matrix-controls {
    flex-direction: column;
    align-items: stretch;
  }
  
  .operation-input-group {
    width: 100%;
  }
  
  .quick-operations, .auto-solve {
    flex-direction: column;
  }
  
  .quick-operations button, .auto-solve button {
    width: 100%;
  }
}