/* ===== ROP-Explorer — Base Layout & Structure =====
   This file contains ALL layout, spacing, typography, and animations.
   Color values are referenced via CSS custom properties defined in the
   theme files (style-node.css for dark, style-node-light.css for light). */

body, html {
  margin: 0; padding: 0; width: 100%; height: 100%;
  overflow: hidden; font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Tahoma, sans-serif;
  background-color: var(--bg-color); color: var(--text-color);
}

body {
  -webkit-user-select: none;
  user-select: none;
}

#header,
#header *,
#editor,
#editor * {
  -webkit-user-select: none;
  user-select: none;
  -webkit-user-drag: none;
}

input[type="text"],
input[type="number"],
select,
option,
textarea,
.debug-console-body,
.debug-console-body *,
.debug-terminal-line {
  -webkit-user-select: text;
  user-select: text;
}

/* ===== Header ===== */
#header {
  position: absolute; top: 0; left: 0; width: 100%;
  min-height: 46px;
  background: var(--header-bg);
  padding: 7px 12px; box-sizing: border-box;
  display: flex; justify-content: space-between; align-items: center;
  z-index: 2000;
  border-bottom: 1px solid var(--header-border);
  box-shadow: 0 6px 18px var(--header-shadow);
  backdrop-filter: blur(18px) saturate(1.18);
  -webkit-backdrop-filter: blur(18px) saturate(1.18);
}
#header h1 {
  margin: 0; font-size: 16px; color: var(--header-title-color);
  font-weight: 620;
  letter-spacing: -0.01em;
  display: flex; align-items: center; gap: 10px;
}
.subtitle {
  color: var(--subtitle-color); font-weight: 500; font-size: 12px;
}
.header-right {
  display: flex; gap: 7px; align-items: center;
  flex-wrap: nowrap;
}
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 29px;
  padding: 0 13px;
  border-radius: 999px;
  border: 1px solid var(--badge-border);
  background: var(--badge-bg);
  color: var(--badge-color);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.01em;
  box-shadow: var(--badge-shadow);
  backdrop-filter: blur(14px) saturate(1.1);
  -webkit-backdrop-filter: blur(14px) saturate(1.1);
}
.badge.working {
  background: var(--badge-working-bg);
  border-color: var(--badge-working-border);
  color: var(--badge-working-color);
}
.badge.done {
  background: var(--badge-done-bg);
  border-color: var(--badge-done-border);
  color: var(--badge-done-color);
}
.badge.error {
  background: var(--badge-error-bg);
  border-color: var(--badge-error-border);
  color: var(--badge-error-color);
}

.btn-icon,
.toolbar-btn {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  border: 1px solid var(--toolbar-btn-border);
  background: var(--toolbar-btn-bg);
  color: var(--toolbar-btn-color);
  min-height: 29px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  box-shadow: var(--toolbar-btn-shadow);
  backdrop-filter: blur(14px) saturate(1.1);
  -webkit-backdrop-filter: blur(14px) saturate(1.1);
  transition: background 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, color 0.18s ease;
}

.btn-icon::before,
.toolbar-btn::before {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  background: var(--toolbar-btn-before-bg);
  pointer-events: none;
}

.btn-icon:hover,
.toolbar-btn:hover {
  background: var(--toolbar-btn-hover-bg);
  border-color: var(--toolbar-btn-hover-border);
  box-shadow: var(--toolbar-btn-hover-shadow);
}

.btn-icon:active,
.toolbar-btn:active {
  background: var(--toolbar-btn-active-bg);
  border-color: var(--toolbar-btn-active-border);
  box-shadow: var(--toolbar-btn-active-shadow);
}

.btn-icon {
  width: 29px;
  min-width: 29px;
  padding: 0;
  font-size: 12px;
}

.btn-icon-small {
  width: 28px;
  min-width: 28px;
  height: 28px;
  min-height: 28px;
  padding: 0;
}

.toolbar-symbol {
  width: 13px;
  height: 13px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
}

.btn-icon .toolbar-symbol,
.btn-icon-small .toolbar-symbol {
  width: 14px;
  height: 14px;
}

.toolbar-symbol svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.55;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.toolbar-btn-debug {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.toolbar-btn-debug.active {
  background: var(--toolbar-debug-active-bg);
  border-color: var(--toolbar-debug-active-border);
  color: var(--toolbar-debug-active-color);
  box-shadow: var(--toolbar-debug-active-shadow);
}

.debug-console-indicator {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--debug-indicator-bg);
  box-shadow: 0 0 10px var(--debug-indicator-glow);
}

/* ===== Canvas ===== */
#editor {
  position: absolute;
  top: 50px;
  left: 0;
  width: 100vw;
  height: calc(100vh - 50px);
  cursor: default;
  overflow: hidden;
}
#grid-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  display: block;
}
body.debug-console-open #editor {
  width: calc(100vw - var(--debug-panel-width));
}
#canvas {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  overflow: visible;
  transform-origin: 0 0;
}
#svg-layer {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  pointer-events: none; overflow: visible;
  transform-origin: 0 0;
}

/* ===== Wires ===== */
.wire {
  fill: none; stroke: var(--wire-color); stroke-width: 3px;
  stroke-linecap: round; transition: stroke 0.2s;
}
.wire.active {
  stroke: var(--wire-active); stroke-dasharray: 5, 5;
  animation: dash 0.5s linear infinite;
}
.wire.connected { stroke: var(--wire-color); }

@keyframes dash {
  to { stroke-dashoffset: -10; }
}

.wire.transmitting {
  stroke-width: 4px;
  stroke-dasharray: 10, 5;
  animation: wire-flow 1s linear infinite;
}

@keyframes wire-flow {
  0% { stroke-dashoffset: 0; }
  100% { stroke-dashoffset: -15; }
}

/* ===== Nodes ===== */
.node {
  position: absolute; background: var(--node-bg-full, var(--node-bg));
  border: 1px solid var(--node-border); border-radius: 6px;
  box-shadow: var(--node-shadow);
  min-width: 240px; min-height: 100px;
  display: flex; flex-direction: column; z-index: 10;
  transition: box-shadow 0.2s;
  resize: both; overflow: hidden;
}
.node:hover { box-shadow: var(--node-hover-shadow); }
.node.viewer { min-width: 380px; min-height: 300px; }

/* Node resize handle */
.node-resize {
  position: absolute; bottom: 0; right: 0;
  width: 20px; height: 20px;
  cursor: nwse-resize;
  background: var(--node-resize-bg);
  border-bottom-right-radius: 6px;
}
.node-resize:hover {
  background: var(--node-resize-hover-bg);
}

.node-header {
  padding: 8px 12px; border-top-left-radius: 5px; border-top-right-radius: 5px;
  font-size: 13px; font-weight: 600; cursor: grab;
  display: flex; justify-content: space-between; align-items: center;
  color: var(--node-header-color);
  user-select: none;
}
.node-header:active { cursor: grabbing; }

/* Node type colors (Blender-inspired) */
.header-input { background: var(--header-input-bg); text-shadow: var(--header-text-shadow); }
.header-process { background: var(--header-process-bg); text-shadow: var(--header-text-shadow); }
.header-parameter { background: var(--header-parameter-bg); text-shadow: var(--header-text-shadow); }
.header-result { background: var(--header-result-bg); text-shadow: var(--header-text-shadow); }
.header-output { background: var(--header-output-bg); }
.header-note { background: var(--header-note-bg); text-shadow: var(--header-text-shadow); }

.btn-close {
  background: var(--btn-close-bg); border: none; color: var(--btn-close-color);
  width: 20px; height: 20px; border-radius: 3px; cursor: pointer;
  font-size: 16px; line-height: 1; padding: 0;
  transition: background 0.2s;
}
.btn-close:hover { background: var(--btn-close-hover-bg); }

.node-body {
  padding: 12px; font-size: 12px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}
.node-body::-webkit-scrollbar { width: 6px; }
.node-body::-webkit-scrollbar-track { background: var(--scrollbar-track); }
.node-body::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 3px; }
.viewer-content::-webkit-scrollbar,
.path-list::-webkit-scrollbar,
.node-info::-webkit-scrollbar,
.scroll-panel::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
.viewer-content::-webkit-scrollbar-track,
.path-list::-webkit-scrollbar-track,
.node-info::-webkit-scrollbar-track,
.scroll-panel::-webkit-scrollbar-track {
  background: var(--scrollbar-panel-track);
}
.viewer-content::-webkit-scrollbar-thumb,
.path-list::-webkit-scrollbar-thumb,
.node-info::-webkit-scrollbar-thumb,
.scroll-panel::-webkit-scrollbar-thumb {
  background: var(--scrollbar-panel-thumb);
  border-radius: 999px;
  border: 2px solid var(--scrollbar-panel-track);
}
.viewer-content::-webkit-scrollbar-thumb:hover,
.path-list::-webkit-scrollbar-thumb:hover,
.node-info::-webkit-scrollbar-thumb:hover,
.scroll-panel::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-panel-thumb-hover);
}

/* ===== Debug Console ===== */
#debug-console {
  position: fixed;
  top: 50px;
  right: 0;
  width: var(--debug-panel-width);
  height: calc(100vh - 50px);
  background: var(--debug-bg);
  border-left: 1px solid var(--debug-border);
  box-shadow: none;
  transform: translateX(100%);
  transition: transform 0.24s ease, box-shadow 0.24s ease;
  z-index: 1900;
  display: flex;
  flex-direction: column;
}

#debug-console.open {
  transform: translateX(0);
  box-shadow: -12px 0 28px var(--debug-open-shadow);
}

.debug-console-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 14px 10px;
  border-bottom: 1px solid var(--debug-header-border);
  background: var(--debug-bg);
}

.debug-console-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--debug-title-color);
}

.debug-console-subtitle {
  margin-top: 2px;
  font-size: 10px;
  color: var(--debug-subtitle-color);
}

.debug-console-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.debug-console-toolbar {
  display: flex;
  align-items: center;
  padding: 6px 14px;
  border-bottom: 1px solid var(--debug-toolbar-border);
  background: var(--debug-bg);
}

.debug-console-counter {
  color: var(--debug-counter-color);
  font-size: 10px;
  letter-spacing: 0.02em;
}

.debug-console-body {
  flex: 1;
  overflow-y: auto;
  padding: 10px 12px 16px;
  font-family: "Cascadia Code", "SFMono-Regular", "Consolas", monospace;
  font-size: 11px;
  line-height: 1.5;
  background: var(--debug-bg);
  color: var(--debug-text-color);
  scrollbar-gutter: stable;
}

.debug-console-body::-webkit-scrollbar {
  width: 10px;
}

.debug-console-body::-webkit-scrollbar-track {
  background: var(--debug-bg);
}

.debug-console-body::-webkit-scrollbar-thumb {
  background: var(--debug-scrollbar-thumb);
  border-radius: 999px;
  border: 2px solid var(--debug-bg);
}

.debug-console-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--debug-empty-color);
  text-align: center;
}

.debug-terminal-line {
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
  padding: 0 0 6px;
  color: var(--debug-text-color);
  background: transparent;
  border: 0;
  font: inherit;
}

/* ===== Sockets ===== */
.socket-row {
  display: flex; justify-content: space-between; align-items: center;
  position: relative; margin: 10px 0; height: 16px;
}
.socket {
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--socket-port-color, var(--socket-bg));
  border: 2px solid var(--node-bg); position: absolute;
  cursor: crosshair; transition: all 0.15s;
  z-index: 100;
}
.socket[data-port="reactions"] {
  --socket-port-color: var(--port-reactions);
  --socket-port-hover-color: var(--port-reactions-hover);
  --socket-port-glow: var(--port-reactions-glow);
}
.socket[data-port="model"],
.socket[data-port="atlas"] {
  --socket-port-color: var(--port-model);
  --socket-port-hover-color: var(--port-model-hover);
  --socket-port-glow: var(--port-model-glow);
}
.socket[data-port="params"],
.socket[data-port="atlas-spec"],
.socket[data-port="atlas-query"] {
  --socket-port-color: var(--port-params);
  --socket-port-hover-color: var(--port-params-hover);
  --socket-port-glow: var(--port-params-glow);
}
.socket[data-port="result"] {
  --socket-port-color: var(--port-result);
  --socket-port-hover-color: var(--port-result-hover);
  --socket-port-glow: var(--port-result-glow);
}
.socket:hover {
  transform: scale(1.4);
  background: var(--socket-port-hover-color, var(--socket-port-color, var(--socket-bg)));
  box-shadow: 0 0 8px var(--socket-port-glow, var(--socket-default-glow));
}
.socket.input { left: -16px; }
.socket.output { right: -16px; }
.socket-label { color: var(--text-dim); font-size: 11px; }
.socket-row.left .socket-label { margin-left: 5px; }
.socket-row.right .socket-label { margin-right: 5px; text-align: right; width: 100%; }

/* ===== Controls ===== */
.param-row {
  display: flex; justify-content: space-between; align-items: center;
  margin: 8px 0; color: var(--text-dim);
}
.param-row label { font-size: 11px; }

input[type="text"], input[type="number"], select, textarea {
  background: var(--input-bg); border: 1px solid var(--input-border);
  color: var(--input-text-color); padding: 5px 8px; border-radius: 3px;
  box-sizing: border-box;
  font-size: 11px; font-family: inherit;
  max-width: 100%;
  min-width: 0;
  box-shadow: var(--input-shadow);
}
input[type="number"] { width: 80px; }
select { width: 100%; }
textarea {
  width: 100%; resize: vertical; font-family: 'Consolas', monospace;
  min-height: 40px;
}

.btn {
  background: var(--btn-bg); border: none; color: var(--btn-color); padding: 7px 10px;
  width: 100%; border-radius: 4px; cursor: pointer; margin-top: 8px;
  font-size: 12px; font-weight: 500; transition: all 0.2s;
}
.btn:hover { background: var(--btn-hover-bg); }
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--btn-primary-bg); color: var(--btn-primary-color); }
.btn-primary:hover { background: var(--btn-primary-hover-bg); }
.btn-run {
  background: var(--btn-run-bg);
  color: var(--btn-run-color);
  box-shadow: var(--btn-run-shadow);
  font-weight: 600;
}
.btn-run:hover { background: var(--btn-run-hover-bg); }
.btn-small { padding: 5px 8px; font-size: 11px; }

/* ===== Reaction Header ===== */
.reaction-header {
  display: flex; gap: 5px; margin-bottom: 4px;
  padding-bottom: 4px; border-bottom: 1px solid var(--reaction-header-border);
}
.reaction-header-label {
  font-size: 10px; color: var(--reaction-header-label-color); font-weight: 600;
  letter-spacing: 0.3px;
}
.reaction-header-label:first-child { flex: 1; }
.reaction-header-kd { width: 60px; }
.reaction-header-spacer { width: 24px; }

/* ===== Reaction Rows ===== */
.reaction-row {
  display: flex; gap: 5px; margin-bottom: 8px; align-items: flex-start;
}
.reaction-row input[type="text"] { flex: 1; }
.reaction-row input[type="number"] { width: 60px; }
.reaction-row .btn-remove {
  background: var(--btn-remove-bg); border: none; color: var(--btn-remove-color);
  width: 24px; height: 24px; border-radius: 3px; cursor: pointer;
  font-size: 16px; line-height: 1; padding: 0;
}
.reaction-row .btn-remove:hover { background: var(--btn-remove-hover-bg); }

/* ===== Node Info ===== */
.node-info {
  background: var(--panel-bg); border: 1px solid var(--panel-border); border-radius: 3px;
  padding: 8px; margin: 8px 0; font-size: 11px;
  max-height: 150px; overflow-y: auto;
}
.node-info pre {
  margin: 0; white-space: pre-wrap; word-wrap: break-word;
  font-family: 'Consolas', monospace; font-size: 10px;
  color: var(--node-info-pre-color);
}

/* ===== Viewer Content ===== */
.viewer-content {
  background: var(--panel-bg); border: 1px solid var(--panel-border); border-radius: 4px;
  padding: 8px; margin-top: 10px; overflow-y: auto; overflow-x: hidden;
  font-size: 11px;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
}
.viewer-content table {
  width: 100%; border-collapse: collapse;
}
.viewer-content th, .viewer-content td {
  padding: 4px 6px; text-align: left; border-bottom: 1px solid var(--table-border);
}
.viewer-content th {
  background: var(--table-header-bg); font-weight: 600; position: sticky; top: 0;
}
.viewer-content td { color: var(--table-cell-color); }

.tag {
  display: inline-block; padding: 2px 6px; border-radius: 3px;
  font-size: 10px; font-weight: 500; margin-right: 4px;
}
.tag-asym { background: #51cf66; color: #000; }
.tag-nonasym { background: #ffd43b; color: #000; }
.tag-singular { background: #ff6b6b; color: #fff; }
.tag-invertible { background: #4ecdc4; color: #000; }
.tag-atlas-ok { background: #51cf66; color: #000; }
.tag-atlas-failed { background: #ff6b6b; color: #fff; }
.tag-atlas-excluded { background: #ffd43b; color: #000; }
.tag-atlas-neutral { background: #495057; color: #fff; }

/* === Plot Container ===== */
.plot-container {
  width: 100%;
  flex: 1;
  background: var(--plot-bg);
  margin-top: 10px;
  border-radius: 4px;
  border: 1px solid var(--panel-border);
  min-height: 300px;
  display: flex;
  flex-direction: column;
}

/* ===== Path List ===== */
.path-list {
  max-height: 200px; overflow-y: auto; margin-top: 10px;
}
.path-item {
  background: var(--panel-bg); border: 1px solid var(--panel-border); border-radius: 3px;
  padding: 6px 8px; margin: 4px 0; cursor: pointer;
  font-size: 11px; transition: all 0.2s;
}
.path-item:hover { background: var(--panel-hover-bg); border-color: var(--panel-hover-border); }
.path-item.selected {
  background: var(--item-selected-bg); border-color: var(--item-selected-border); color: var(--item-selected-color);
}

.scroll-panel {
  overflow-y: auto;
  scrollbar-gutter: stable;
}

.siso-summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 8px;
}

.siso-stat-card {
  background: var(--stat-card-bg);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 10px;
}

.siso-stat-label {
  color: var(--stat-label-color);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.siso-stat-value {
  color: var(--stat-value-color);
  font-size: 20px;
  font-weight: 700;
  margin-top: 4px;
}

.siso-legend {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.siso-scope-note {
  background: var(--scope-note-bg);
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  color: var(--scope-note-color);
  line-height: 1.45;
  padding: 8px 10px;
}

.siso-inline-tags {
  margin: 2px 0 4px;
  line-height: 1.5;
}

.siso-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.siso-section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 10px;
}

.siso-section-title {
  color: var(--section-title-color);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.siso-summary-line {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.summary-chip {
  background: var(--chip-bg);
  border: 1px solid var(--panel-border);
  border-radius: 3px;
  color: var(--chip-color);
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
}

/* ===== Tab Navigation ===== */
.tab-nav {
  display: flex;
  gap: 2px;
  margin-bottom: 10px;
  border-bottom: 2px solid var(--tab-nav-border);
  overflow-x: auto;
  scrollbar-width: thin;
  flex-shrink: 0;
  min-height: 36px;
}

.tab-btn {
  background: var(--tab-btn-bg);
  border: none;
  color: var(--tab-btn-color);
  padding: 8px 14px;
  cursor: pointer;
  font-size: 11px;
  font-weight: 600;
  border-radius: 4px 4px 0 0;
  transition: all 0.2s;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  flex-shrink: 0;
}

.tab-btn:hover {
  background: var(--tab-btn-hover-bg);
  color: var(--tab-btn-hover-color);
}

.tab-btn.active {
  background: var(--tab-btn-active-bg);
  color: var(--tab-btn-active-color);
  border-bottom-color: var(--tab-btn-active-bg);
}

.tab-content {
  display: none;
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
}

.tab-content.active {
  display: block;
}

/* Keep tab panes in the flex layout so output sockets stay aligned to node height. */
.node-body.node-body-tabbed {
  overflow: hidden;
}

.tab-content::-webkit-scrollbar {
  width: 6px;
}

.tab-content::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}

.tab-content::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 3px;
}

.atlas-config-section {
  background: var(--atlas-config-bg);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 10px;
  margin-bottom: 10px;
}

.atlas-section-title {
  color: var(--atlas-section-title-color);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.atlas-textarea {
  min-height: 150px;
}

.atlas-textarea-compact {
  min-height: 96px;
}

.atlas-textarea-singleline {
  min-height: 48px;
}

.atlas-builder-group {
  background: var(--panel-bg);
  border: 1px solid var(--atlas-builder-group-border);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 10px;
  padding: 9px;
}

.atlas-builder-head {
  align-items: center;
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.atlas-builder-head span {
  color: var(--atlas-builder-head-color);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.atlas-builder-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.atlas-builder-row {
  align-items: center;
  background: var(--atlas-builder-row-bg);
  border: 1px solid var(--atlas-builder-row-border);
  border-radius: 6px;
  display: grid;
  gap: 8px;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(78px, auto);
  padding: 8px;
}

.atlas-builder-row[data-builder-kind="transition"] {
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) minmax(78px, auto);
}

.atlas-builder-pair {
  display: grid;
  gap: 6px;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
}

.atlas-builder-input {
  width: 100%;
}

.atlas-builder-arrow {
  color: var(--atlas-builder-arrow-color);
  font-size: 14px;
  font-weight: 700;
  text-align: center;
}

.atlas-builder-remove {
  justify-self: end;
  min-width: 34px;
}

.atlas-query-preview {
  background: var(--atlas-builder-row-bg);
  border: 1px solid var(--atlas-query-preview-border);
  border-radius: 8px;
  color: var(--atlas-query-preview-color);
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 11px;
  line-height: 1.45;
  margin: 0;
  max-height: 240px;
  overflow: auto;
  padding: 10px;
  white-space: pre-wrap;
  word-break: break-word;
}

.atlas-sketch-card {
  background: var(--atlas-sketch-card-bg);
  border: 1px solid var(--atlas-sketch-card-border);
  border-radius: 10px;
  margin-bottom: 10px;
  padding: 10px 10px 8px;
}

.atlas-sketch-svg {
  display: block;
  height: 118px;
  width: 100%;
}

.atlas-sketch-axis {
  stroke: var(--atlas-sketch-axis-stroke);
  stroke-width: 1.2;
}

.atlas-sketch-line {
  fill: none;
  stroke: #e9c46a;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 3;
}

.atlas-sketch-card circle {
  fill: #2a9d8f;
  stroke: var(--atlas-sketch-circle-stroke);
  stroke-width: 1.2;
}

.atlas-sketch-caption {
  color: var(--atlas-sketch-caption-color);
  font-size: 11px;
  letter-spacing: 0.02em;
  margin-top: 6px;
}

.atlas-sketch-empty {
  align-items: center;
  background: var(--atlas-sketch-empty-bg);
  border: 1px dashed var(--atlas-sketch-empty-border);
  border-radius: 10px;
  display: flex;
  justify-content: center;
  margin-bottom: 10px;
  min-height: 110px;
  padding: 10px;
  text-align: center;
}

.atlas-path-inline {
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 11px;
  font-style: normal;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.atlas-rule-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.atlas-rule-list code {
  background: var(--atlas-rule-code-bg);
  border: 1px solid var(--atlas-rule-code-border);
  border-radius: 4px;
  color: var(--atlas-rule-code-color);
  display: block;
  font-family: 'Consolas', monospace;
  padding: 6px 8px;
  white-space: pre-wrap;
  word-break: break-word;
}

.atlas-dedup-list {
  display: grid;
  gap: 8px;
}

.atlas-inline-card {
  background: var(--atlas-inline-card-bg);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  padding: 8px 10px;
}

.cloud-fov-panel {
  background: var(--cloud-fov-bg);
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 8px;
  padding: 8px;
}

.cloud-fov-row {
  align-items: center;
  display: grid;
  gap: 6px;
  grid-template-columns: minmax(0, 1.3fr) minmax(70px, 0.8fr) auto minmax(70px, 0.8fr);
}

.cloud-fov-axis {
  color: var(--cloud-fov-axis-color);
  font-size: 11px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cloud-fov-sep {
  color: var(--cloud-fov-sep-color);
  font-size: 10px;
  text-transform: uppercase;
}

.cloud-fov-row input {
  min-width: 0;
}

.siso-table-wrap {
  overflow-x: auto;
}

.siso-result-viewer,
.siso-result-viewer .path-list,
.siso-result-viewer .scroll-panel,
.siso-result-viewer .siso-table-wrap {
  overflow-x: hidden;
}

.siso-result-viewer .siso-family-table {
  width: 100%;
  table-layout: fixed;
}

.siso-family-table td {
  vertical-align: top;
}

.siso-profile-cell {
  color: var(--siso-profile-cell-color);
  font-family: 'Consolas', monospace;
  word-break: break-word;
}

.siso-wrap-cell {
  white-space: normal;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.family-ref {
  display: inline-flex;
  align-items: center;
  background: var(--chip-bg);
  border: 1px solid var(--panel-border);
  border-radius: 3px;
  color: var(--chip-color);
  font-size: 10px;
  font-weight: 600;
  margin-right: 4px;
  margin-bottom: 4px;
  padding: 2px 6px;
}

.family-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
}

.family-card {
  background: linear-gradient(180deg, var(--family-soft), var(--family-card-gradient-end));
  border: 1px solid var(--family-card-border);
  border-left: 4px solid var(--family-accent);
  border-radius: 10px;
  box-shadow: var(--family-card-inset-shadow);
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 12px;
}

.family-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
}

.family-kicker {
  color: var(--family-accent);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.family-title {
  color: var(--family-title-color);
  font-family: 'Consolas', monospace;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.4;
  margin-top: 2px;
  word-break: break-word;
}

.family-subtitle {
  color: var(--family-subtitle-color);
  font-size: 11px;
  line-height: 1.4;
  margin-top: 4px;
}

.family-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.atlas-stack {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.family-metric {
  background: var(--family-metric-bg);
  border-radius: 999px;
  color: var(--family-metric-color);
  display: inline-flex;
  align-items: center;
  font-size: 10px;
  padding: 3px 8px;
}

.family-path-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.atlas-detail-card {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  overflow: hidden;
}

.atlas-detail-summary {
  align-items: center;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  list-style: none;
  padding: 10px 12px;
}

.atlas-detail-summary::-webkit-details-marker {
  display: none;
}

.atlas-detail-card[open] > .atlas-detail-summary {
  border-bottom: 1px solid var(--panel-border);
}

.atlas-detail-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 12px;
}

.atlas-detail-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.atlas-detail-block {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.atlas-code-block {
  background: var(--input-bg);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  color: var(--table-cell-color);
  font-family: 'Consolas', monospace;
  font-size: 10px;
  line-height: 1.45;
  margin: 0;
  max-height: 220px;
  overflow: auto;
  padding: 8px 10px;
  white-space: pre-wrap;
  word-break: break-word;
}

.atlas-trace-stage {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 10px;
}

.atlas-trace-stage-head {
  align-items: flex-start;
  display: flex;
  gap: 10px;
  justify-content: space-between;
}

.atlas-trace-stage-title {
  color: var(--family-title-color);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.4;
}

.path-chip {
  background: var(--chip-bg);
  border: 1px solid var(--path-chip-border);
  border-radius: 3px;
  color: var(--chip-color);
  cursor: pointer;
  font-size: 10px;
  font-weight: 600;
  padding: 3px 7px;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.path-chip:hover {
  background: var(--path-chip-soft);
  border-color: var(--path-chip-accent);
}

.path-chip.selected {
  background: var(--path-chip-selected-bg);
  border-color: var(--path-chip-selected-border);
  color: var(--path-chip-selected-color);
}

.family-badge {
  --badge-accent: rgba(255, 255, 255, 0.2);
  --badge-soft: rgba(255, 255, 255, 0.08);
  align-items: center;
  background: var(--badge-soft);
  border: 1px solid var(--badge-accent);
  border-radius: 3px;
  color: var(--family-badge-color);
  display: inline-flex;
  font-size: 10px;
  font-weight: 600;
  gap: 4px;
  padding: 2px 6px;
}

.family-badge-exact {
  --badge-accent: #ff8c42;
  --badge-soft: rgba(255, 140, 66, 0.18);
  color: var(--family-badge-exact-color);
}

.family-badge-motif {
  --badge-accent: #4cc9f0;
  --badge-soft: rgba(76, 201, 240, 0.16);
  color: var(--family-badge-motif-color);
}

.siso-feasible-list {
  margin-top: 0;
  max-height: min(360px, 48vh);
  padding-right: 4px;
}

.siso-path-item {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 0 0 8px;
  padding: 8px;
}

.siso-path-item:hover {
  background: var(--panel-hover-bg);
  border-color: var(--panel-hover-border);
}

.siso-path-item.selected {
  background: var(--siso-path-selected-bg);
  border-color: var(--item-selected-border);
  color: var(--item-selected-color);
}

.siso-path-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.siso-path-title {
  color: var(--siso-path-title-color);
  font-size: 12px;
  font-weight: 600;
}

.siso-path-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.siso-path-detail {
  color: var(--siso-path-detail-color);
  font-family: 'Consolas', monospace;
  line-height: 1.45;
  word-break: break-word;
}

.siso-path-meta {
  color: var(--siso-path-meta-color);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 10px;
}

.siso-path-item.selected .siso-path-title,
.siso-path-item.selected .siso-path-detail,
.siso-path-item.selected .siso-path-meta,
.siso-path-item.selected .btn,
.path-item.selected .siso-path-title,
.path-item.selected .siso-path-detail,
.path-item.selected .siso-path-meta,
.path-item.selected .btn {
  color: var(--item-selected-color);
}

.siso-inline-btn {
  margin-top: 0;
  width: auto;
}

/* ===== Toolbar ===== */
#toolbar {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.toolbar-menu-group {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.toolbar-btn {
  padding: 0 12px;
  color: var(--toolbar-btn-text-color, var(--toolbar-btn-color));
  box-shadow: var(--toolbar-btn-text-shadow, var(--toolbar-btn-shadow));
}

/* ===== Dropdown Menu ===== */
.dropdown-menu {
  display: none; position: absolute; top: calc(100% + 10px); left: 0;
  background: var(--dropdown-bg);
  border: 1px solid var(--dropdown-border);
  border-radius: 14px;
  min-width: max(220px, 100%);
  box-shadow: var(--dropdown-shadow);
  z-index: 3000; padding: 8px 0;
  backdrop-filter: blur(18px) saturate(1.12);
  -webkit-backdrop-filter: blur(18px) saturate(1.12);
}
.dropdown-menu.open { display: block; }
.menu-section-title {
  padding: 6px 14px 4px; font-size: 10px; font-weight: 600;
  color: var(--menu-section-title-color); text-transform: uppercase; letter-spacing: 0.5px;
}
.menu-item {
  margin: 0 8px;
  padding: 8px 12px; font-size: 12px; color: var(--menu-item-color);
  cursor: pointer; display: flex; align-items: center; gap: 8px;
  border-radius: 10px;
  transition: background 0.15s, color 0.15s;
}
.menu-item:hover { background: var(--menu-item-hover-bg); }
.menu-item.is-selected {
  background: var(--menu-item-selected-bg);
  color: var(--menu-item-selected-color);
}
.menu-color {
  display: inline-block; width: 8px; height: 8px;
  border-radius: 50%; flex-shrink: 0;
}
.menu-color.color-input { background: #C15C5C; }
.menu-color.color-parameter { background: #9B59B6; }
.menu-color.color-result { background: #17A2B8; }
.menu-color.color-viewer { background: #5C8A5C; }

/* ===== Viewer Header ===== */
.header-viewer { background: var(--header-viewer-bg); text-shadow: var(--header-text-shadow); }

/* ===== Loading State ===== */
.node.loading .node-body {
  pointer-events: none; opacity: 0.7;
}
.node.loading .node-header::after {
  content: ''; position: absolute; bottom: 0; left: 0;
  width: 100%; height: 4px;
  background: linear-gradient(90deg, transparent, #6c8cff, transparent);
  animation: loading-bar 1.2s ease-in-out infinite;
}
.node.loading .node-header { position: relative; overflow: hidden; }

@keyframes loading-bar {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* ===== Node Error ===== */
.node-error {
  background: rgba(255, 107, 107, 0.15); border: 1px solid #ff6b6b;
  border-radius: 3px; padding: 8px; margin: 4px 0;
  color: #ff6b6b; font-size: 11px; word-break: break-word;
}

/* ===== Connected Socket ===== */
.socket.connected {
  background: var(--socket-port-color, var(--socket-bg));
  box-shadow:
    0 0 0 2px rgba(255, 255, 255, 0.12),
    0 0 8px var(--socket-port-glow, var(--socket-default-glow));
}

/* ===== Toast Notifications ===== */
#toast-container {
  position: fixed; bottom: 20px; left: 50%;
  transform: translateX(-50%); z-index: 5000;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  pointer-events: none;
}
.toast {
  background: var(--toast-bg); color: var(--toast-color); padding: 10px 20px;
  border-radius: 6px; font-size: 13px;
  box-shadow: 0 4px 12px var(--toast-shadow);
  opacity: 0; transition: opacity 0.3s ease;
  pointer-events: auto;
}
.toast.show { opacity: 1; }

/* ===== Text dim helper ===== */
.text-dim { color: var(--text-dim-helper); font-style: italic; }

/* ===== Markdown Note Styles ===== */
.note-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--panel-border);
}

.note-tab {
  background: transparent;
  border: none;
  color: var(--note-tab-color);
  padding: 6px 12px;
  cursor: pointer;
  font-size: 12px;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

.note-tab:hover {
  color: var(--note-tab-hover-color);
}

.note-tab.active {
  color: var(--note-tab-active-color);
  border-bottom-color: var(--note-tab-active-color);
}

.note-edit-area,
.note-preview-area {
  height: 100%;
  overflow: hidden;
}

.markdown-editor {
  width: 100%;
  height: 100%;
  background: var(--panel-bg);
  color: var(--markdown-editor-color);
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  padding: 10px;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 13px;
  line-height: 1.6;
  resize: none;
  outline: none;
}

.markdown-editor:focus {
  border-color: var(--note-tab-active-color);
}

.markdown-preview {
  height: 100%;
  overflow-y: auto;
  padding: 10px;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  color: var(--markdown-preview-color);
  font-size: 13px;
  line-height: 1.6;
}

.markdown-preview h1 {
  font-size: 20px;
  margin: 16px 0 8px 0;
  color: var(--markdown-heading-color);
  border-bottom: 1px solid var(--markdown-h1-border);
  padding-bottom: 4px;
}

.markdown-preview h2 {
  font-size: 17px;
  margin: 14px 0 6px 0;
  color: var(--markdown-heading-color);
}

.markdown-preview h3 {
  font-size: 15px;
  margin: 12px 0 4px 0;
  color: var(--markdown-heading-color);
}

.markdown-preview p {
  margin: 8px 0;
}

.markdown-preview ul {
  margin: 8px 0;
  padding-left: 20px;
}

.markdown-preview li {
  margin: 4px 0;
}

.markdown-preview strong {
  color: var(--markdown-strong-color);
  font-weight: bold;
}

.markdown-preview em {
  color: var(--markdown-em-color);
  font-style: italic;
}

.markdown-preview code {
  background: var(--markdown-code-bg);
  color: var(--markdown-code-color);
  padding: 2px 6px;
  border-radius: 3px;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 12px;
}

.markdown-preview a {
  color: var(--markdown-link-color);
  text-decoration: none;
}

.markdown-preview a:hover {
  text-decoration: underline;
}

.menu-color.color-note { background: #F39C12; }