/* styles.css */
:root {
  --bg-color: #f8f8f8;
  --text-color: #333;
  --border-color: #ddd;
  --primary-color: #007bff;
  --secondary-color: #6c757d;
  --editor-bg-color: #fff;
  --editor-text-color: #333;
  --line-number-color: #aaa;
  --error-bg-color: #ffe0e0;
  --error-text-color: #c00;
  --splitter-color: #ccc;

  /* SVG Diagram Colors */
  --diagram-node-fill: #e6f7ff;
  --diagram-node-stroke: #91d5ff;
  --diagram-text-fill: #333;
  --diagram-edge-stroke: #555;
  --diagram-marker-fill: #555;
  --diagram-participant-fill: #f0f0f0;
  --diagram-participant-stroke: #ccc;
  --diagram-entity-fill: #f9f9f9;
  --diagram-entity-stroke: #bbb;
}

html[data-theme="dark"] {
  --bg-color: #282c34;
  --text-color: #abb2bf;
  --border-color: #3e4451;
  --primary-color: #61afef;
  --secondary-color: #848d9a;
  --editor-bg-color: #21252b;
  --editor-text-color: #abb2bf;
  --line-number-color: #6a737d;
  --error-bg-color: #4a2d2d;
  --error-text-color: #ff6b6b;
  --splitter-color: #4a5059;

  /* SVG Diagram Colors */
  --diagram-node-fill: #3b4252;
  --diagram-node-stroke: #81a1c1;
  --diagram-text-fill: #d8dee9;
  --diagram-edge-stroke: #d8dee9;
  --diagram-marker-fill: #d8dee9;
  --diagram-participant-fill: #2e3440;
  --diagram-participant-stroke: #4c566a;
  --diagram-entity-fill: #333842;
  --diagram-entity-stroke: #666e7b;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  display: flex;
  height: 100vh;
  overflow: hidden;
}

.container {
  display: flex;
  flex-grow: 1;
}

.left-pane,
.right-pane {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden; /* Important for scrollable content inside */
}

.left-pane {
  flex-basis: 50%; /* Initial width, adjusted by splitter */
  min-width: 300px; /* Minimum width for the editor */
  max-width: 80%; /* Maximum width for the editor */
  border-right: 1px solid var(--border-color);
  padding: 10px;
}

.right-pane {
  flex-grow: 1;
  padding: 10px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.splitter {
  width: 8px;
  cursor: ew-resize;
  background-color: var(--splitter-color);
  flex-shrink: 0; /* Prevents splitter from shrinking */
}

.splitter:hover {
  background-color: var(--primary-color);
}

.splitter:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: -2px;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.controls button {
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--editor-bg-color);
  color: var(--text-color);
  cursor: pointer;
  font-size: 0.9em;
  transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}

.controls button:hover {
  background-color: var(--primary-color);
  color: #fff;
  border-color: var(--primary-color);
}

.controls button:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.sample-buttons {
  display: flex;
  gap: 8px;
}

#themeToggleBtn {
  font-size: 1.2em;
  padding: 4px 8px;
}

.editor-wrapper {
  display: flex;
  flex-grow: 1;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  overflow: hidden; /* Ensure line numbers don't overflow */
}

.line-numbers {
  flex-shrink: 0;
  width: 40px;
  padding: 10px 5px 10px 0;
  text-align: right;
  background-color: var(--editor-bg-color);
  color: var(--line-number-color);
  font-family: monospace;
  font-size: 0.9em;
  line-height: 1.5; /* Match textarea line-height */
  user-select: none;
  overflow: hidden;
  white-space: pre; /* Essential for line breaks */
  box-shadow: 1px 0 0 var(--border-color);
  position: relative; /* For the box-shadow */
}

#jsonEditor {
  flex-grow: 1;
  border: none;
  outline: none;
  padding: 10px;
  font-family: monospace;
  font-size: 0.9em;
  line-height: 1.5; /* Match line-numbers line-height */
  background-color: var(--editor-bg-color);
  color: var(--editor-text-color);
  resize: none; /* Disable native textarea resize */
  overflow: auto; /* Enable scrolling */
  white-space: pre; /* Keep formatting */
}

#jsonEditor::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

#jsonEditor::-webkit-scrollbar-thumb {
  background-color: var(--splitter-color);
  border-radius: 4px;
}

#jsonEditor::-webkit-scrollbar-track {
  background-color: transparent;
}

.error-display {
  margin-top: 10px;
  padding: 10px;
  border-radius: 4px;
  background-color: var(--error-bg-color);
  color: var(--error-text-color);
  font-size: 0.85em;
  line-height: 1.4;
  overflow: hidden;
}

.error-summary {
  font-weight: bold;
  cursor: pointer;
  position: relative;
  padding-right: 20px; /* Space for expand/collapse arrow */
}

.error-summary:hover {
  text-decoration: underline;
}

.error-summary::after {
  content: "▼"; /* Down arrow */
  position: absolute;
  right: 0;
  transition: transform 0.2s ease-in-out;
}

.error-summary.expanded::after {
  content: "▲"; /* Up arrow */
  transform: rotate(180deg);
}

.error-details {
  padding-top: 5px;
  max-height: 200px; /* Limit height for scroll */
  overflow-y: auto;
  border-top: 1px solid var(--error-text-color);
  margin-top: 5px;
}

.error-details.collapsed {
  max-height: 0;
  padding-top: 0;
  border-top: none;
}

.error-details ul {
  list-style-type: none;
  padding: 0;
}

.error-details li {
  margin-bottom: 3px;
}

/* SVG Diagram Styling */
#diagramSvg {
  flex-grow: 1;
  overflow: visible; /* Allow content to draw slightly outside if needed */
  background-color: var(--editor-bg-color);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
}

#diagramSvg text {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  fill: var(--diagram-text-fill);
  pointer-events: none; /* Prevent text from interfering with drag/selection */
  user-select: none;
}

#diagramSvg .node {
  fill: var(--diagram-node-fill);
  stroke: var(--diagram-node-stroke);
  stroke-width: 1.5;
}

#diagramSvg .edge {
  stroke: var(--diagram-edge-stroke);
  stroke-width: 1.5;
  fill: none;
}

#diagramSvg marker {
  fill: var(--diagram-marker-fill);
  stroke: var(--diagram-marker-fill);
}

#diagramSvg .edge-label {
  fill: var(--diagram-text-fill);
  font-size: 0.8em;
  text-anchor: middle;
}

/* Sequence Diagram specific */
#diagramSvg .participant-header {
  fill: var(--diagram-participant-fill);
  stroke: var(--diagram-participant-stroke);
  stroke-width: 1;
}
#diagramSvg .lifeline {
  stroke: var(--diagram-participant-stroke);
  stroke-dasharray: 4 2;
  stroke-width: 1;
}
#diagramSvg .message-line {
  fill: none;
  stroke: var(--diagram-edge-stroke);
  stroke-width: 1.5;
}
#diagramSvg .message-line.reply {
  stroke-dasharray: 5 3;
}
#diagramSvg .message-label {
  fill: var(--diagram-text-fill);
  font-size: 0.85em;
}

/* ERD specific */
#diagramSvg .entity-box {
  fill: var(--diagram-entity-fill);
  stroke: var(--diagram-entity-stroke);
  stroke-width: 1.5;
}
#diagramSvg .entity-title {
  font-weight: bold;
  font-size: 1.1em;
}
#diagramSvg .attribute {
  font-size: 0.9em;
}
#diagramSvg .attribute.pk {
  text-decoration: underline;
}
#diagramSvg .attribute.fk {
  font-style: italic;
}
#diagramSvg .attribute.unique::after {
  content: " ★";
  font-size: 0.8em;
  vertical-align: super;
}
#diagramSvg .relationship-line {
  fill: none;
  stroke: var(--diagram-edge-stroke);
  stroke-width: 1.5;
}
#diagramSvg .crow-foot {
  fill: var(--diagram-marker-fill);
  stroke: var(--diagram-marker-fill);
  stroke-width: 1.5;
}
#diagramSvg .cardinality-circle {
  fill: var(--diagram-node-fill);
  stroke: var(--diagram-edge-stroke);
  stroke-width: 1.5;
}