.tools-page .top { border-bottom: 1px solid var(--line); }

.tools-layout {
  display: grid;
  grid-template-columns: 200px minmax(380px, 1.1fr) minmax(320px, 1fr);
  flex: 1;
  min-height: 0;
}

.tool-rail {
  border-right: 1px solid var(--line);
  background: #fbfaf6;
  padding: 10px 8px 24px;
  overflow: auto;
}

.tool-rail button {
  display: block;
  width: 100%;
  text-align: left;
  margin: 0 0 4px;
  background: transparent;
  color: var(--ink);
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 13px;
}

.tool-rail button:hover { background: #efeae2; border-color: var(--line); }
.tool-rail button.active {
  background: #1c1916;
  color: #fff;
  border-color: #1c1916;
}

.tool-rail .group {
  margin: 12px 0 6px;
  padding: 0 8px;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.tool-main {
  min-width: 0;
  min-height: 0;
  overflow: auto;
  padding: 12px;
  border-right: 1px solid var(--line);
  background: #efeae2;
}

.editor-bar {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.editor-actions { display: flex; flex-wrap: wrap; gap: 6px; }

.modality {
  font-size: 12px;
  color: var(--muted);
  background: #fffdf8;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 6px 10px;
}

.editor-wrap {
  display: grid;
  grid-template-columns: 44px 1fr;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #1c1916;
  min-height: 280px;
}

.gutter {
  background: #2a2622;
  color: #8a8178;
  font: 12px/1.45 Consolas, monospace;
  padding: 12px 6px;
  text-align: right;
  user-select: none;
  overflow: hidden;
}

#code {
  min-height: 280px;
  height: 320px;
  margin: 0;
  border: 0;
  border-radius: 0;
  background: #1c1916;
  color: #f3efe6;
  padding: 12px;
  resize: vertical;
  font: 13px/1.45 Consolas, "Courier New", monospace;
}

.hints {
  margin: 8px 0 12px;
  font-size: 13px;
  color: var(--muted);
  min-height: 1.4em;
}

.tool-panel {
  background: #fffdf8;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
}

.tool-panel h2 {
  margin: 0 0 8px;
  font-size: 16px;
  text-transform: none;
  letter-spacing: 0;
  color: var(--ink);
}

.tool-panel .desc {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 13px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 8px 10px;
  margin-bottom: 12px;
}

.form-grid label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--muted);
}

.form-grid input, .form-grid select, .form-grid textarea {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 6px 8px;
  font: 13px Segoe UI, sans-serif;
  color: var(--ink);
  background: #fff;
}

.form-grid textarea { min-height: 72px; font-family: Consolas, monospace; }
.form-actions { display: flex; flex-wrap: wrap; gap: 8px; }

.tool-out {
  margin-top: 12px;
  background: #fffdf8;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
}

.tool-out-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.tool-out-bar > div { display: flex; gap: 6px; }

#out-code {
  margin: 0;
  max-height: 220px;
  overflow: auto;
  background: #1c1916;
  color: #f3efe6;
  border-radius: 6px;
  padding: 10px;
  font: 12px/1.4 Consolas, monospace;
  white-space: pre-wrap;
}

.tool-out .note { margin-top: 8px; font-size: 13px; color: var(--muted); }

.tool-preview {
  min-width: 0;
  min-height: 0;
  overflow: auto;
  background: #efeae2;
}

.tool-preview .stage-bar {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  padding: 10px 14px;
  background: rgba(251, 250, 246, 0.94);
  border-bottom: 1px solid var(--line);
}

#sheet { padding: 12px; }
#sheet svg { display: block; width: 100%; height: auto; }

.measure-box {
  margin: 0 12px 16px;
  padding: 10px;
  background: #fffdf8;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 13px;
}

.diff-table {
  width: 100%;
  border-collapse: collapse;
  font: 12px Consolas, monospace;
}

.diff-table td, .diff-table th {
  border-bottom: 1px solid var(--line);
  padding: 4px 6px;
  vertical-align: top;
  text-align: left;
}

.diff-table tr.changed { background: #fff1e6; }
.diff-table .del { color: var(--bad); }
.diff-table .add { color: var(--cut); }

.risk-list { margin: 0; padding-left: 18px; }
.risk-list .error { color: var(--bad); }
.risk-list .warn { color: var(--warn); }

.tpl-list { display: flex; flex-direction: column; gap: 6px; margin-bottom: 10px; }
.tpl-list button { text-align: left; }

@media (max-width: 1100px) {
  .tools-layout { grid-template-columns: 180px 1fr; }
  .tool-preview { grid-column: 1 / -1; min-height: 50vh; border-top: 1px solid var(--line); }
}

@media (max-width: 700px) {
  .tools-layout { grid-template-columns: 1fr; }
  .tool-rail { display: flex; gap: 4px; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .tool-rail button { white-space: nowrap; width: auto; }
  .tool-rail .group { display: none; }
}