/* String Edit Distance - Optimized Layout */

.card-header {
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 700;
  margin-bottom: 0.25rem;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.subtitle {
  color: var(--color-text-muted);
  margin-bottom: 0;
  font-size: 0.875rem;
  line-height: 1.4;
}

.main-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--spacing-sm);
  margin: var(--spacing-sm) 0;
  min-height: calc(100vh - 250px);
  max-height: calc(100vh - 250px);
}

.controls-panel {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  height: 100%;
  overflow-y: auto;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.control-group label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
}

.control-group input[type="text"],
.control-group textarea,
.control-group select {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  padding: 0.625rem 0.875rem;
  font-size: 0.9375rem;
  transition: var(--transition);
  font-family: var(--font-sans);
  width: 100%;
  box-sizing: border-box;
}

.control-group input[type="text"]:focus,
.control-group textarea:focus,
.control-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.1);
}

.control-group textarea {
  resize: vertical;
  min-height: 60px;
  max-height: 100px;
  font-family: var(--font-sans);
  line-height: 1.5;
}

.button-group {
  display: flex;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-xs);
}

.button-group .btn {
  flex: 1;
  padding: 0.625rem 0.875rem;
  font-size: 0.875rem;
  min-height: 36px;
}

.chart-container {
  padding: var(--spacing-sm);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  overflow: auto;
}

#chartView {
  width: 100%;
  height: 100%;
  min-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

#chartView svg {
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  width: 100%;
  height: auto;
}

#chartView .grid line {
  stroke: var(--color-border);
  stroke-opacity: 0.3;
}

#chartView .grid path {
  stroke: var(--color-border);
  stroke-opacity: 0.3;
}

#chartView .plot {
  stroke: var(--color-primary);
  stroke-width: 2;
  stroke-opacity: 0.8;
}

#chartView circle {
  fill: var(--color-primary);
  stroke: var(--color-bg-secondary);
  stroke-width: 2;
  transition: all 0.2s ease;
}

#chartView circle:hover {
  fill: var(--color-primary-light);
  stroke: var(--color-primary);
  stroke-width: 3;
  r: 6;
}

#chartView .labels {
  fill: var(--color-text);
  font-size: 12px;
  font-weight: 500;
  font-family: var(--font-sans);
}

#chartView .domain {
  stroke: var(--color-border);
}

#chartView .tick text {
  fill: var(--color-text-muted);
  font-family: var(--font-sans);
}

#chartView .tick line {
  stroke: var(--color-border);
}

.details {
  margin-top: var(--spacing-sm);
  padding: var(--spacing-sm);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.details summary {
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  padding: var(--spacing-xs);
  margin: calc(var(--spacing-xs) * -1);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  font-size: 0.9375rem;
}

.details summary:hover {
  background: rgba(74, 158, 255, 0.05);
  color: var(--color-primary);
}

.details[open] summary {
  margin-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--spacing-sm);
}

.details p,
.details li {
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--spacing-xs);
  font-size: 0.9375rem;
}

.details ul {
  margin-left: var(--spacing-md);
  margin-top: var(--spacing-sm);
}

.details strong {
  color: var(--color-text);
}

/* Responsive Layout */
@media (max-width: 1024px) {
  .main-layout {
    grid-template-columns: 260px 1fr;
    gap: var(--spacing-xs);
    min-height: calc(100vh - 220px);
    max-height: calc(100vh - 220px);
  }
  
  .controls-panel {
    padding: var(--spacing-xs);
  }
  
  .chart-container {
    padding: var(--spacing-xs);
  }
}

@media (max-width: 768px) {
  .main-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
    gap: var(--spacing-xs);
    min-height: calc(100vh - 200px);
    max-height: calc(100vh - 200px);
  }
  
  .controls-panel {
    order: 1;
    max-height: 200px;
    overflow-y: auto;
  }
  
  .chart-container {
    order: 2;
    min-height: calc(100vh - 420px);
  }
  
  .control-group textarea {
    min-height: 80px;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.5rem;
  }
  
  .subtitle {
    font-size: 0.875rem;
  }
  
  .controls-panel {
    padding: var(--spacing-sm);
    gap: var(--spacing-xs);
  }
  
  .chart-container {
    padding: var(--spacing-sm);
    min-height: 350px;
  }
  
  .button-group {
    flex-direction: column;
  }
  
  .button-group .btn {
    width: 100%;
  }
}