/* RAG Lab — Flow mode. Loaded after styles.css; uses its palette variables. */

/* min-height, not height: on a short screen the page scrolls instead of the footer covering the readout. */
.flow-page { min-height: 100vh; display: flex; flex-direction: column; }
.flow-page .app-footer { flex: none; }

/* ---------- Three columns: palette, canvas, inspector ---------- */
.flow-layout {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 180px 1fr 420px;
  /* One row exactly as tall as the space left under the header, so the side
     columns scroll inside it instead of stretching the page. */
  grid-template-rows: minmax(0, 1fr);
  gap: 0;
}
.flow-layout.inspector-hidden { grid-template-columns: 180px 1fr; }
.flow-layout.inspector-hidden .flow-inspector { display: none; }
/* The panel's own heading is for screen readers. Hide floats beside the node's title. */
.flow-inspector__head { float: right; margin: 0 0 var(--space-1) var(--space-2); }
.flow-inspector__head .button { font-size: var(--text-sm); padding: var(--space-1) var(--space-2); }
#inspector-body .station__header .lane-tag { text-transform: none; letter-spacing: 0; }
.inspector-dials { list-style: none; margin: 0 0 var(--space-2); padding: 0; font-size: var(--text-sm); color: var(--ink-soft); }
.inspector-dials .mono { color: var(--green); font-weight: 700; }
.inspector-station { margin-top: var(--space-3); overflow-x: auto; }
.inspector-station .station__header h3 { margin: 0; }
.inspector-station .explainer { margin: var(--space-2) 0 var(--space-4); }
.inspector-station .rank-table { font-size: var(--text-xs); }
.inspector-station .prompt-box { font-size: var(--text-xs); }
.inspector-station .chunk-card__text { font-size: var(--text-sm); }
.inspector-station .document-input { min-height: 8em; }
.inspector-station .answer-grid { grid-template-columns: 1fr; }
.inspector-station .key-input { max-width: 100%; }
.inspector-station .toolbar { margin: var(--space-2) 0; }
.inspector-station .lane-tag { font-size: var(--text-2xs); }
.flow-side {
  background: var(--paper);
  padding: var(--space-4);
  overflow-y: auto;
}
.flow-palette { border-right: 1px solid var(--line); }
.flow-inspector { border-left: 1px solid var(--line); }
.flow-side h2 { font-size: var(--text-lg); }
.flow-side h3 { font-size: var(--text-md); margin-top: var(--space-4); }
.flow-side__intro { font-size: var(--text-md); color: var(--ink-soft); }

.palette, .presets { display: flex; flex-direction: column; gap: var(--space-2); }
.palette__button {
  font: inherit;
  text-align: left;
  border: 1px solid var(--line);
  border-left-width: 5px;
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  padding: var(--space-2) var(--space-3);
  cursor: pointer;
  font-weight: 600;
}
.palette__button:hover { background: var(--ice); border-color: var(--green); }
.palette__button--build { border-left-color: var(--teal); }
.palette__button--run { border-left-color: var(--amber); }
.palette__button--none { border-left-color: var(--line); }

.flow-main { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.flow-toolbar {
  display: flex;
  gap: var(--space-2);
  align-items: center;
  flex-wrap: wrap;
  padding: var(--space-2) var(--space-4);
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.flow-toolbar__spacer { flex: 1; }
.flow-toolbar__group { display: flex; gap: var(--space-2); align-items: center; }
.flow-toolbar .button { font-size: var(--text-md); padding: var(--space-1) var(--space-3); }
.flow-toolbar__zoom { font-size: var(--text-sm); color: var(--ink-soft); min-width: 3.5em; text-align: center; }
.flow-menu { position: relative; }
.flow-menu summary { list-style: none; cursor: pointer; }
.flow-menu summary::-webkit-details-marker { display: none; }
.flow-menu summary::after { content: ' ▾'; }
.flow-menu__list {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  z-index: 5;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 14rem;
  padding: var(--space-2);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-float);
}
.flow-menu__list .button { text-align: left; }
.flow-menu__list .button--file { display: block; }

/* ---------- The canvas ---------- */
.flow-canvas {
  position: relative;
  flex: 1;
  min-height: 280px;
  overflow: hidden;
  background-color: var(--page);
  background-image: radial-gradient(var(--line) 1px, transparent 1px);
  background-size: 20px 20px;
  touch-action: none;
  cursor: grab;
  user-select: none;
}
.flow-canvas.is-panning { cursor: grabbing; }
.flow-canvas.is-wiring { cursor: crosshair; }
.flow-canvas:focus-visible { outline-offset: -3px; }

.flow-world {
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 0;
  transform-origin: 0 0;
}
.flow-edges { position: absolute; left: 0; top: 0; width: 1px; height: 1px; overflow: visible; }
.flow-edge { fill: none; stroke: var(--green); stroke-width: 2.5; stroke-linecap: round; }
.flow-edge.is-stale { stroke: var(--amber-ink); stroke-dasharray: 6 5; }
.flow-edge--temp { stroke: var(--gold-mark); stroke-width: 2.5; stroke-dasharray: 6 5; }

.flow-handle {
  position: absolute;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border-radius: 50%;
  border: 1.5px solid var(--green);
  background: var(--paper);
  color: var(--green);
  font: 700 var(--text-svg)/1 var(--font-body);
  cursor: pointer;
  padding: 0;
  opacity: 0.75;
}
.flow-handle:hover, .flow-handle:focus-visible { opacity: 1; background: var(--danger-soft); border-color: var(--danger); color: var(--danger); }

/* ---------- Nodes ---------- */
.flow-node {
  position: absolute;
  width: 220px; /* FLOW_NODE_WIDTH in js/constants.js */
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  cursor: default;
  user-select: text;
}
.flow-node:focus { outline: none; }
.flow-node:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.flow-node.is-selected { border-color: var(--green); box-shadow: 0 0 0 1px var(--green); }
.flow-node.is-dragging { box-shadow: var(--shadow-float); }
.flow-node.is-running .flow-node__head { background: var(--gold-soft); }

.flow-node__head {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2);
  border-bottom: 1px solid var(--line);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  background: var(--ice);
  cursor: grab;
}
.flow-node--build .flow-node__head { border-top: 4px solid var(--teal); }
.flow-node--run .flow-node__head { border-top: 4px solid var(--amber); }
.flow-node--document .flow-node__head, .flow-node--note .flow-node__head { border-top: 4px solid var(--green); }
.flow-node__title { margin: 0; font-size: var(--text-base); flex: 1; }
.flow-node__head .lane-tag { font-size: var(--text-2xs); padding: var(--space-0) var(--space-2); }
.flow-node__remove {
  font: 700 var(--text-base)/1 var(--font-body);
  border: 0;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  padding: var(--space-0) var(--space-1);
  border-radius: var(--radius-sm);
}
.flow-node__remove:hover { background: var(--danger-soft); color: var(--danger); }

.flow-node__body {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) 0;
}
.flow-node__inputs, .flow-node__outputs { display: flex; flex-direction: column; gap: var(--space-2); }
.flow-port-row { display: flex; align-items: center; gap: var(--space-1); }
.flow-port-row--out { flex-direction: row-reverse; }
.flow-port-label { font-family: var(--font-mono); font-size: var(--text-2xs); color: var(--ink-soft); }
.flow-port {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--green);
  background: var(--paper);
  padding: 0;
  cursor: pointer;
  flex: none;
}
.flow-port--in { margin-left: -10px; }
.flow-port--out { margin-right: -10px; background: var(--green); }
.flow-port.is-wired { background: var(--green); }
.flow-port--in.is-candidate { background: var(--teal-soft); border-color: var(--teal); box-shadow: 0 0 0 3px var(--teal-soft); }
.flow-port--in.is-ok { background: var(--teal); border-color: var(--teal); box-shadow: 0 0 0 4px var(--gold-mark); }
.flow-port--in.is-refused { background: var(--danger); border-color: var(--danger); box-shadow: 0 0 0 4px var(--danger-soft); }
.flow-port.is-origin { box-shadow: 0 0 0 4px var(--gold-mark); }

.flow-node__params { display: flex; flex-direction: column; gap: var(--space-2); min-width: 0; }
.flow-node__params label { display: block; font-size: var(--text-xs); font-weight: 700; color: var(--green); }
.flow-node__params label .mono { font-family: var(--font-mono); }
/* A dial is one row: the name, then the box. */
.flow-node__params .flow-dial { display: flex; align-items: center; gap: var(--space-2); }
.flow-node__params .flow-dial .mono { flex: 1; }
.flow-node__params .flow-dial input[type="number"] { width: 5.5em; flex: none; }
.flow-node__params input[type="number"], .flow-node__params input[type="text"], .flow-node__params select, .flow-node__params textarea {
  font: inherit;
  font-size: var(--text-md);
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-2);
  background: var(--paper);
  color: var(--ink);
}
.flow-node__params textarea { resize: vertical; min-height: 3.2em; font-size: var(--text-sm); }
.flow-node__params .hint { font-size: var(--text-2xs); }
.flow-node__params .button { font-size: var(--text-sm); padding: var(--space-1) var(--space-2); }
.flow-mode-option { display: flex; align-items: center; gap: var(--space-1); font-size: var(--text-sm); font-weight: 400 !important; color: var(--ink) !important; }
.flow-mode-option input { accent-color: var(--green); margin: 0; }
.flow-node__message { font-size: var(--text-xs); color: var(--danger); margin: 0; }
.flow-node__message:empty { display: none; }

.flow-node__foot {
  border-top: 1px solid var(--line);
  padding: var(--space-2);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-1) var(--space-2);
  align-items: center;
}
.flow-node__summary { margin: 0; font-size: var(--text-sm); color: var(--ink-soft); }
.has-artifact .flow-node__summary { color: var(--ink); }
.flow-node__badge {
  grid-column: 1 / -1;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--amber-ink);
}
.flow-node__badge::before { content: ''; display: inline-block; width: 0.55em; height: 0.55em; border-radius: 50%; background: var(--gold-mark); margin-right: var(--space-1); }
.flow-node__error { grid-column: 1 / -1; margin: 0; font-size: var(--text-xs); color: var(--danger); }
.flow-node__error:empty { display: none; }
.flow-node__run { font-size: var(--text-sm); padding: var(--space-1) var(--space-3); }
.is-stale .flow-node__summary { color: var(--ink-soft); }
.is-stale .flow-node__foot { background: var(--gold-soft); }

/* ---------- The one line under the canvas: the last message, or the pointer help ---------- */
.flow-readout {
  margin: 0;
  padding: var(--space-2) var(--space-4);
  min-height: 2.4em;
  font-size: var(--text-md);
  background: var(--paper);
  border-top: 1px solid var(--line);
  color: var(--ink);
}

/* ---------- Inspector ---------- */
.inspector-placeholder { color: var(--ink-soft); font-size: var(--text-md); }

/* ---------- Narrow screens: stack the columns ---------- */
@media (max-width: 1100px) {
  .flow-layout, .flow-layout.inspector-hidden { grid-template-columns: 1fr; }
  .flow-layout { grid-template-rows: auto minmax(280px, 1fr) auto; }
  .flow-side { max-height: 34vh; padding: var(--space-2) var(--space-4); }
  .flow-side h2 { font-size: var(--text-base); margin: 0 0 var(--space-1); }
  .flow-side h3 { font-size: var(--text-md); display: inline-block; margin: var(--space-2) var(--space-3) var(--space-1) 0; }
  .flow-palette .flow-side__intro { display: none; }
  .flow-inspector__head { float: none; margin: 0; }
  .palette__button { padding: var(--space-1) var(--space-2); font-size: var(--text-md); }
  .flow-palette { border-right: 0; border-bottom: 1px solid var(--line); }
  .flow-inspector { border-left: 0; border-top: 1px solid var(--line); }
  .palette, .presets { flex-direction: row; flex-wrap: wrap; }
  .flow-side h3 { margin-top: var(--space-3); }
}

@media (prefers-reduced-motion: no-preference) {
  .flow-world { transition: transform 0.15s ease-out; }
  .flow-world.is-live { transition: none; }
  .flow-port { transition: box-shadow 0.1s, background-color 0.1s; }
}