/* PyMatterSim GraphWorkflows — dark tech theme */

:root {
  --bg: #0a0e1a;
  --bg-1: #11162a;
  --bg-2: #1a2140;
  --fg: #e6ecff;
  --fg-muted: #8893b0;
  --accent: #00ffd1;
  --accent-2: #7c5cff;
  --border: #2a3358;
  --warn: #ffb454;
  --err: #ff6479;

  --cat-reader: #00d4ff;
  --cat-neighbors: #ffb300;
  --cat-static: #b164ff;
  --cat-dynamic: #ff3d77;
  --cat-file: #94a3b8;
  --cat-writer: #00e676;

  --font-mono: "JetBrains Mono", "Fira Code", ui-monospace,
               SFMono-Regular, Menlo, Consolas, "Liberation Mono",
               monospace;
  --font-display: system-ui, -apple-system, "Segoe UI", Roboto,
                  "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.45;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.6rem 1rem;
  background: linear-gradient(90deg, var(--bg-1), var(--bg));
  border-bottom: 1px solid var(--border);
}

.app-header h1 {
  margin: 0;
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 500;
}

.accent { color: var(--accent); }
.muted  { color: var(--fg-muted); }

.chip {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  margin-left: 0.5rem;
  font-size: 0.78rem;
  color: var(--accent);
}
.chip.muted { color: var(--fg-muted); }

.grid {
  flex: 1;
  display: grid;
  grid-template-columns: 240px 1fr 320px;
  min-height: 0;
}

.palette, .inspector {
  background: var(--bg-1);
  border-right: 1px solid var(--border);
  padding: 0.75rem;
  overflow-y: auto;
  min-height: 0;
}
.inspector { border-right: none; border-left: 1px solid var(--border); }

.palette h2, .inspector h2 {
  margin: 0 0 0.5rem 0;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-muted);
}

.cat-group {
  margin-bottom: 0.75rem;
}

.cat-header {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0.4rem 0 0.25rem;
  padding-bottom: 0.2rem;
  border-bottom: 1px dashed var(--border);
}

.cat-reader    { color: var(--cat-reader); }
.cat-neighbors { color: var(--cat-neighbors); }
.cat-static    { color: var(--cat-static); }
.cat-dynamic   { color: var(--cat-dynamic); }
.cat-file      { color: var(--cat-file); }
.cat-writer    { color: var(--cat-writer); }

.palette-item {
  display: block;
  width: 100%;
  text-align: left;
  background: var(--bg-2);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 0.4rem 0.6rem;
  margin: 0.2rem 0;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  transition: border-color 120ms ease, color 120ms ease,
              transform 120ms ease, background 120ms ease;
}
.palette-item:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: #1f2750;
  transform: translateX(2px);
}

.canvas-wrap {
  display: flex;
  flex-direction: column;
  min-height: 0;
  background: #050811;
}

.canvas-toolbar {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-1);
}
.canvas-toolbar label {
  display: flex;
  flex-direction: column;
  font-size: 0.7rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.canvas-toolbar input,
.canvas-toolbar select {
  background: var(--bg-2);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.25rem 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}
.canvas-toolbar input { min-width: 260px; }

.canvas {
  flex: 1;
  background: #050811;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 24px 24px;
  min-height: 0;
}

/* Workflow-order strip — horizontal list of chips above the canvas. */
.order-strip {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 0.75rem;
  background: var(--bg-1);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  scrollbar-width: thin;
}
.order-strip-empty {
  font-size: 0.78rem;
  color: var(--fg-muted);
  font-style: italic;
}
.order-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-left: 4px solid var(--border);
  border-radius: 5px;
  padding: 0.2rem 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--fg);
  white-space: nowrap;
  cursor: pointer;
  transition: border-color 120ms ease, background 120ms ease;
}
.order-chip:hover {
  background: #1f2750;
}
.order-chip.selected {
  border-color: var(--accent);
  background: #1f2750;
  color: var(--accent);
}
.order-chip .num {
  display: inline-block;
  color: var(--fg-muted);
  font-size: 0.7rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0 0.4rem;
  line-height: 1.4;
}
.order-chip .role-tag {
  font-size: 0.62rem;
  color: var(--fg-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.order-chip .id-text { color: inherit; }
.order-chip button {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--fg-muted);
  padding: 0 0.3rem;
  border-radius: 3px;
  font-size: 0.75rem;
  cursor: pointer;
  font-family: inherit;
  font-weight: 400;
  line-height: 1.2;
}
.order-chip button:hover:not(:disabled) {
  color: var(--accent);
  border-color: var(--accent);
}
.order-chip button:disabled {
  opacity: 0.25;
  cursor: not-allowed;
}
.order-chip[data-role="input"]    { border-left-color: var(--cat-reader); }
.order-chip[data-cat="neighbors"] { border-left-color: var(--cat-neighbors); }
.order-chip[data-cat="static"]    { border-left-color: var(--cat-static); }
.order-chip[data-cat="dynamic"]   { border-left-color: var(--cat-dynamic); }
.order-chip[data-cat="file"]      { border-left-color: var(--cat-file); }
.order-chip[data-cat="writer"]    { border-left-color: var(--cat-writer); }

.inspector .field { margin: 0.5rem 0; }
.inspector label {
  display: block;
  font-size: 0.7rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.15rem;
}
.inspector input,
.inspector select,
.inspector textarea {
  width: 100%;
  background: var(--bg-2);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.25rem 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}
.inspector textarea { min-height: 4em; resize: vertical; }
.inspector .save-list label { display: inline; margin-right: 0.4rem; }

.inspector .node-title {
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--accent);
  margin-bottom: 0.6rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
}

/* Directed-graph signature view at the top of the Inspector pane:
   shows inputs → adapter → outputs as a small SVG diagram. */
.signature-wrap {
  background: #050811;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem 0.4rem;
  margin: 0 0 0.75rem 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 12px 12px;
}
.signature-graph { display: block; }
.signature-graph .sg-clickable { cursor: pointer; }
.signature-graph .sg-clickable:hover rect { stroke-width: 2.5; }

button {
  background: var(--accent);
  color: #04101a;
  border: none;
  padding: 0.45rem 1rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-weight: 500;
  cursor: pointer;
}
button:hover { background: var(--accent-2); color: var(--fg); }
button.ghost {
  background: transparent;
  color: var(--fg-muted);
  border: 1px solid var(--border);
}
button.ghost:hover { color: var(--err); border-color: var(--err); }

.actions {
  display: flex;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  background: var(--bg-1);
  border-top: 1px solid var(--border);
}

.toast {
  position: fixed;
  bottom: 4rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--err);
  color: var(--fg);
  padding: 0.5rem 1rem;
  border-radius: 4px;
  font-size: 0.85rem;
  box-shadow: 0 4px 18px rgba(0,0,0,0.6);
}
.toast.hidden { display: none; }