/*
wasm-regex-tree - WebAssembly visualizer for Rust regular expressions.
Copyright (C) 2026 Soumendra Ganguly

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

body {
  font-family: monospace;
  background: #f9f9f9;
  margin: 0;
  padding: 0;
}
#topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #f9f9f9;
  border-bottom: 1px solid #ddd;
  padding: 10px 20px;
}
#controls {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
}
#right-controls {
  display: flex;
  gap: 12px;
  align-items: center;
}
#params-panel {
  display: none;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  padding: 10px 0 4px 0;
  border-top: 1px solid #eee;
  margin-top: 10px;
}
#params-panel.visible { display: flex; }
#pattern {
  font-family: monospace;
  font-size: 16px;
  padding: 6px 10px;
  border: 1px solid #ccc;
  border-radius: 4px;
  width: 40vw;
}
button {
  font-family: monospace;
  font-size: 14px;
  padding: 6px 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  background: #ddd;
  cursor: pointer;
}
button:hover { background: #bbb; }
#site-title {
  font-size: 15px;
  font-weight: bold;
  color: #333;
  white-space: nowrap;
  margin-right: 8px;
}
label { font-size: 13px; color: #555; }
input[type=number] {
  width: 56px;
  font-family: monospace;
  font-size: 13px;
  padding: 4px 6px;
  border: 1px solid #ccc;
  border-radius: 4px;
}
#main {
  display: flex;
  gap: 0;
  align-items: flex-start;
  padding: 20px;
  min-height: calc(100vh - 60px);
}
#content {
  flex: 1;
  min-width: 0;
  overflow-x: auto;
}
#error {
  color: #c00;
  font-size: 13px;
  margin-bottom: 12px;
  min-height: 18px;
}
#trees {
  display: flex;
  flex-direction: column;
  gap: 0;
  align-items: center;
}
#trees figure + figure {
  border-top: 1px solid #ddd;
  padding-top: 32px;
  margin-top: 32px;
  width: 100%;
  text-align: center;
}
#trees figure {
  padding-bottom: 0;
}
figure {
  margin: 0;
  display: inline-block;
}
figure button {
  display: block;
  margin: 6px auto 0;
}
#legend-panel {
  display: none;
  width: 25vw;
  flex-shrink: 0;
  margin-left: 24px;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 16px;
  font-size: 13px;
  box-sizing: border-box;
  align-self: center;
  position: sticky;
  top: calc(50vh - 50%);
}
#legend-panel.visible { display: block; }
#legend-panel h3 {
  margin: 0 0 12px 0;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #888;
  font-weight: normal;
}
#legend-panel table {
  width: 100%;
  border-collapse: collapse;
}
#legend-panel td {
  padding: 5px 6px;
  vertical-align: middle;
}
#legend-panel tr:not(:last-child) td {
  border-bottom: 1px solid #f0f0f0;
}
.swatch {
  width: 16px;
  height: 16px;
  border-radius: 3px;
  display: inline-block;
}
.legend-divider {
  border: none;
  border-top: 1px solid #eee;
  margin: 12px 0;
}
.legend-note {
  font-size: 12px;
  color: #666;
  line-height: 1.7;
}
#legend-panel code {
  background: #f0f0f0;
  border: 1px solid #ddd;
  border-radius: 3px;
  padding: 1px 4px;
  font-size: 12px;
}
footer {
  position: sticky;
  bottom: 0;
  text-align: center;
  padding: 20px;
  font-size: 12px;
  color: #888;
  background: #f9f9f9;
}