/* Container card */
#drag-calculator.tool-card,
#fluidization-tool.tool-card {
  padding: 1.5rem;
  margin: 1rem 0;
  border-radius: 0.5rem;
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

/* Layout: form on the left, results/plot on the right (wrap on small screens) */
#drag-calculator .tool-layout,
#fluidization-tool .tool-layout {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: flex-start;
}

/* Form styles */
#drag-calculator .tool-form,
#fluidization-tool .tool-form {
  flex: 1 1 220px;
  max-width: 320px;
}

#drag-calculator .field,
#fluidization-tool .field {
  display: flex;
  flex-direction: column;
  margin-bottom: 0.75rem;
}

#drag-calculator .field label,
#fluidization-tool .field label {
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

#drag-calculator .field input[type="number"],
#fluidization-tool .field input[type="number"] {
  padding: 0.4rem 0.5rem;
  border-radius: 0.25rem;
  border: 1px solid rgba(0, 0, 0, 0.2);
  font-size: 0.9rem;
  width: 100%;
  box-sizing: border-box;
}

#drag-calculator .field input[type="number"]:focus,
#fluidization-tool .field input[type="number"]:focus {
  outline: none;
  border-color: #2962ff; /* tweak to match your theme */
  box-shadow: 0 0 0 2px rgba(41, 98, 255, 0.2);
}

/* Button */
#drag-calculator .tool-button,
#fluidization-tool .tool-button {
  margin-top: 0.75rem;
  padding: 0.45rem 0.9rem;
  border-radius: 0.25rem;
  border: none;
  font-size: 0.9rem;
  cursor: pointer;
  background-color: #2962ff; /* primary color */
  color: #fff;
}

#drag-calculator .tool-button:hover,
#fluidization-tool .tool-button:hover {
  background-color: #254ed4;
}

/* Results */
#drag-calculator .tool-results,
#fluidization-tool .tool-results {
  flex: 1 1 200px;
  min-width: 200px;
}

#drag-calculator .result-line,
#fluidization-tool .result-line {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.9rem;
  padding: 0.35rem 0;
  border-bottom: 1px dashed rgba(0, 0, 0, 0.1);
}

#drag-calculator .result-label,
#fluidization-tool .result-label {
  font-weight: 500;
}

#drag-calculator .result-value,
#fluidization-tool .result-value {
  font-family: monospace;
}

/* Compact multi-model output */
#fluidization-tool .result-value {
  font-size: 0.8rem;
  line-height: 1.1;
  white-space: nowrap;
}

/* Plot */
#drag-calculator .tool-plot,
#fluidization-tool .tool-plot {
  width: 100%;
  max-width: 700px;
  height: 400px;
  margin-top: 1rem;
}


/* Two-column layout: inputs + drag model */
#drag-calculator .tool-layout,
#fluidization-tool .tool-layout {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: flex-start;
}

/* Right column: drag model selector */
#drag-calculator .tool-options,
#fluidization-tool .tool-options {
  flex: 0 1 400px;
  max-width: 400px;
  font-size: 0.9rem;
}

#drag-calculator .model-choice,
#fluidization-tool .model-choice {
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 0.35rem;
  padding: 0.5rem 0.75rem;
  margin: 0 0 0.5rem 0;
}

#drag-calculator .model-choice legend,
#fluidization-tool .model-choice legend {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0 0.25rem;
}

#drag-calculator .model-choice label,
#fluidization-tool .model-choice label {
  display: block;
  margin: 0.25rem 0;
}

#drag-calculator .model-note,
#fluidization-tool .model-note {
  margin: 0.25rem 0 0;
  opacity: 0.7;
  font-size: 0.8rem;
}

/* Results below, full width */
#drag-calculator .tool-results-below,
#fluidization-tool .tool-results-below {
  margin-top: 1rem;
}