styles.css

:root {
  /* Technical blueprint palette — lavender ground, blue ink, white fills */
  --ink: #3d5af1;          /* primary blue stroke */
  --ink-deep: #2c3fb8;     /* heavier accents */
  --ink-soft: #6b7fea;
  --ink-faint: #aab4f0;
  --paper: #ffffff;        /* fills */
  --paper-2: #f6f7ff;
  --ground: #e8ebff;       /* lavender background */
  --ground-2: #dde2ff;
  --hatch: #c9d0ff;
  --accent: #3d5af1;
  --accent-soft: #d6deff;
  --frame: #3d5af1;
  --grid: #d6deff;
  --shadow: 2px 2px 0 #3d5af1;

  --stroke-w: 1.75px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: 'Figtree', system-ui, sans-serif;
  font-weight: 400;
  color: var(--ink-deep);
  background: var(--ground);
  font-size: 15px;
  letter-spacing: 0.01em;
}

button { font-family: inherit; cursor: pointer; }

h1, h2, h3 {
  font-family: 'Figtree', system-ui, sans-serif;
  font-weight: 600;
  margin: 0;
  color: var(--ink-deep);
}

/* ---------- TOPBAR ---------- */
.topbar {
  height: 56px;
  border-bottom: var(--stroke-w) solid var(--ink);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  background: #fff;
}
.brand { display: flex; align-items: baseline; gap: 8px; }
.brand-mark {
  font-size: 22px;
  color: var(--ink);
  font-weight: 700;
}
.brand-text {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink-deep);
}
.brand-sub {
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 400;
}
.topbar-actions { display: flex; gap: 8px; }

/* ---------- BUTTONS ---------- */
.ghost-btn, .primary-btn, .add-btn {
  border: var(--stroke-w) solid var(--ink);
  background: var(--paper);
  color: var(--ink-deep);
  padding: 6px 14px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 500;
  transition: transform 80ms ease, background 80ms ease;
}
.ghost-btn:hover, .add-btn:hover {
  background: var(--accent-soft);
}
.primary-btn {
  background: var(--ink);
  color: var(--paper);
}
.primary-btn:hover { background: var(--ink-deep); }
.add-btn { font-size: 12px; padding: 4px 10px; }

/* ---------- WORKSPACE ---------- */
.workspace {
  display: grid;
  grid-template-columns: 320px 1fr;
  height: calc(100vh - 56px);
  background: var(--ground);
}

/* ---------- PALETTE ---------- */
.palette {
  border-right: var(--stroke-w) solid var(--ink);
  background-color: #fff;
  overflow-y: auto;
  padding: 16px;
}
.palette-header h2 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
}
.hint {
  font-size: 12px;
  color: var(--ink-soft);
  margin: 4px 0 12px;
  font-weight: 400;
  line-height: 1.4;
}
.hint.small { font-size: 11px; }

.palette-section {
  margin-top: 16px;
  border-top: 1px solid var(--ink-faint);
  padding-top: 12px;
}
.palette-section h3 {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  margin-bottom: 10px;
}
.section-row {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}
.section-row h3 {
  margin-bottom: 0;
  white-space: nowrap;
}

/* GRID of thumbnail tiles */
.palette-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.palette-tile {
  border: var(--stroke-w) solid var(--ink);
  background: var(--paper);
  border-radius: 6px;
  padding: 8px;
  cursor: grab;
  user-select: none;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: transform 80ms, background 80ms;
}
.palette-tile:hover {
  background: var(--accent-soft);
  transform: translate(-1px, -1px);
}
.palette-tile:active { cursor: grabbing; }

.tile-thumb {
  height: 64px;
  border: 1px solid var(--ink-faint);
  border-radius: 3px;
  background: var(--ground);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
}
.tile-thumb svg {
  width: 100%;
  height: 100%;
  display: block;
}
.tile-name {
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-deep);
  text-align: center;
  line-height: 1.2;
}
.tile-remove {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 18px;
  height: 18px;
  border: 1px solid var(--ink-faint);
  background: var(--paper);
  border-radius: 50%;
  color: var(--ink-soft);
  font-size: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  cursor: pointer;
}
.tile-remove:hover { color: var(--ink); border-color: var(--ink); }

/* ---------- CANVAS ---------- */
.canvas-wrap {
  display: flex;
  flex-direction: column;
  background: var(--ground);
  overflow: hidden;
  padding: 16px;
}
.canvas-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 6px 8px;
  font-size: 12px;
  color: var(--ink-deep);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.canvas-toolbar .canvas-label { font-size: 13px; font-weight: 600; }

.canvas {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  position: relative;
  background: var(--paper);
  border: var(--stroke-w) solid var(--ink);
  border-radius: 6px;

  /* corner brackets like the reference: */
  background-image:
    linear-gradient(135deg, var(--hatch) 25%, transparent 25%) -1px -1px / 14px 14px no-repeat,
    linear-gradient(225deg, var(--hatch) 25%, transparent 25%) calc(100% + 1px) -1px / 14px 14px no-repeat,
    linear-gradient(45deg,  var(--hatch) 25%, transparent 25%) -1px calc(100% + 1px) / 14px 14px no-repeat,
    linear-gradient(315deg, var(--hatch) 25%, transparent 25%) calc(100% + 1px) calc(100% + 1px) / 14px 14px no-repeat;
}
.canvas.grid-on {
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 24px 24px;
}
.canvas.drag-over { background-color: var(--paper-2); }

/* Empty state */
.empty-state {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--ink-soft);
  pointer-events: none;
}
.empty-sketch {
  font-size: 36px;
  letter-spacing: 8px;
  color: var(--ink-faint);
}
.empty-title {
  font-size: 18px;
  font-weight: 600;
  margin: 12px 0 4px;
  color: var(--ink-deep);
}
.empty-sub { font-size: 13px; }

/* Drop zones */
.drop-zone {
  height: 8px;
  border-radius: 2px;
  margin: 0;
  transition: height 120ms, background 120ms;
}
.drop-zone.active {
  height: 28px;
  background: var(--accent-soft);
  border: 1.5px dashed var(--ink);
}

/* Placed component */
.placed {
  position: relative;
  border: var(--stroke-w) solid var(--ink);
  border-radius: 4px;
  background: var(--paper);
  padding: 14px;
  margin: 0 0 6px;
  cursor: grab;
  width: var(--w, auto);
  height: var(--h, auto);
  min-width: 120px;
  min-height: 60px;
  overflow: hidden;
}
.placed:hover .placed-actions { opacity: 1; }
.placed:hover .resize-handle { opacity: 1; }
.placed.dragging { opacity: 0.4; }
.placed.resizing { cursor: nwse-resize; outline: 2px dashed var(--ink); outline-offset: 2px; }

.placed-actions {
  position: absolute;
  top: 6px;
  right: 6px;
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity 100ms;
  z-index: 4;
}
.placed-actions button {
  width: 24px;
  height: 24px;
  border: 1.5px solid var(--ink);
  background: var(--paper);
  border-radius: 3px;
  font-size: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  color: var(--ink-deep);
}
.placed-actions button:hover { background: var(--accent-soft); }

.placed-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  margin-bottom: 8px;
}
.placed-body {
  height: calc(100% - 22px);
  overflow: auto;
}

/* Resize handles */
.resize-handle {
  position: absolute;
  background: var(--paper);
  border: 1.5px solid var(--ink);
  opacity: 0;
  transition: opacity 100ms;
  z-index: 5;
}
.resize-handle.right {
  right: -5px; top: 50%;
  width: 9px; height: 24px;
  margin-top: -12px;
  cursor: ew-resize;
  border-radius: 2px;
}
.resize-handle.bottom {
  bottom: -5px; left: 50%;
  width: 24px; height: 9px;
  margin-left: -12px;
  cursor: ns-resize;
  border-radius: 2px;
}
.resize-handle.corner {
  bottom: -5px; right: -5px;
  width: 12px; height: 12px;
  cursor: nwse-resize;
  border-radius: 2px;
  background: var(--ink);
}

/* Size hint */
.size-hint {
  position: absolute;
  bottom: 6px;
  right: 6px;
  background: var(--ink);
  color: var(--paper);
  padding: 2px 8px;
  border-radius: 3px;
  font-size: 11px;
  font-weight: 500;
  pointer-events: none;
  z-index: 6;
}

/* ---------- WIREFRAME COMPONENT VISUALS (line-drawing style) ---------- */
.wf-line {
  height: 6px;
  background: var(--ink-faint);
  border-radius: 1px;
  margin: 6px 0;
}
.wf-line.short { width: 40%; }
.wf-line.medium { width: 70%; }
.wf-line.long { width: 100%; }
.wf-line.thick { height: 12px; background: var(--ink-soft); }

.wf-block {
  border: 1.5px solid var(--ink-faint);
  border-radius: 3px;
  background: repeating-linear-gradient(45deg, transparent, transparent 6px, var(--ground) 6px, var(--ground) 12px);
}
.wf-row { display: flex; gap: 8px; align-items: center; }
.wf-col { display: flex; flex-direction: column; gap: 6px; flex: 1; }
.wf-circle {
  width: 36px; height: 36px; border-radius: 50%;
  border: 1.5px solid var(--ink);
  background: var(--ground);
  flex-shrink: 0;
}
.wf-pill {
  display: inline-block;
  padding: 4px 10px;
  border: 1.5px solid var(--ink-faint);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-soft);
  background: var(--paper);
}
.wf-btn-shape {
  display: inline-block;
  padding: 7px 14px;
  border: 1.5px solid var(--ink);
  border-radius: 4px;
  font-size: 13px;
  font-weight: 500;
  background: var(--paper);
  color: var(--ink-deep);
}
.wf-btn-shape.primary { background: var(--ink); color: var(--paper); }

.wf-title {
  font-size: 24px;
  font-weight: 700;
  border-bottom: 1.5px solid var(--ink-faint);
  padding-bottom: 6px;
  color: var(--ink-deep);
}
.wf-tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1.5px solid var(--ink);
}
.wf-tab {
  padding: 8px 16px;
  border: 1.5px solid var(--ink-faint);
  border-bottom: none;
  border-radius: 4px 4px 0 0;
  font-size: 13px;
  font-weight: 500;
  background: var(--ground);
  color: var(--ink-soft);
}
.wf-tab.active { background: var(--paper); border-color: var(--ink); color: var(--ink-deep); }

/* Editor (toolbar + body) */
.wf-editor-wrap {
  border: 1.5px solid var(--ink);
  border-radius: 4px;
  background: var(--paper);
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 200px;
}
.wf-editor-toolbar {
  display: flex;
  gap: 4px;
  padding: 6px 8px;
  border-bottom: 1.5px solid var(--ink);
  background: var(--paper-2);
  flex-wrap: wrap;
  border-radius: 4px 4px 0 0;
}
.wf-editor-toolbar .icon {
  width: 24px; height: 24px;
  border: 1px solid var(--ink-faint);
  border-radius: 2px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
  background: var(--paper);
  color: var(--ink-deep);
}
.wf-editor-body {
  padding: 12px;
  flex: 1;
  overflow: auto;
}

.wf-score {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 10px;
}
.wf-score-ring {
  width: 100px; height: 100px;
  border-radius: 50%;
  border: 6px solid var(--ink);
  border-right-color: var(--ink-faint);
  border-bottom-color: var(--ink-faint);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 700;
  color: var(--ink-deep);
}
.wf-score-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-soft);
}

.wf-suggestion {
  border: 1.5px solid var(--ink-faint);
  border-radius: 3px;
  padding: 8px 10px;
  margin: 6px 0;
  background: var(--ground);
  font-size: 12px;
  font-weight: 400;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  color: var(--ink-deep);
}
.wf-suggestion .badge {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--paper);
  border: 1px solid var(--ink);
  color: var(--ink);
  white-space: nowrap;
}

.wf-agent-msg {
  border: 1.5px solid var(--ink-faint);
  border-radius: 3px;
  padding: 10px;
  margin: 6px 0;
  background: var(--ground);
  font-size: 12px;
  color: var(--ink-deep);
}
.wf-agent-msg .agent-actions {
  margin-top: 6px;
  display: flex;
  gap: 6px;
}

.wf-action-card {
  border: 1.5px solid var(--ink);
  border-radius: 3px;
  padding: 10px;
  margin: 6px 0;
  background: var(--paper);
  display: flex;
  gap: 10px;
  align-items: center;
}

.wf-sidebar {
  border: 1.5px solid var(--ink);
  border-radius: 3px;
  padding: 12px;
  background: var(--paper-2);
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
}
.wf-nav-item {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px;
  font-weight: 500;
  padding: 4px 0;
  color: var(--ink-deep);
}
.wf-nav-item .dot {
  width: 12px; height: 12px;
  border-radius: 2px;
  background: var(--ink-faint);
}

/* Custom shapes */
.wf-custom { height: 100%; }
.wf-custom-body {
  border: 1.5px solid var(--ink-faint);
  border-radius: 4px;
  background: repeating-linear-gradient(45deg, transparent, transparent 6px, var(--ground) 6px, var(--ground) 12px);
  padding: 12px;
  font-size: 12px;
  color: var(--ink-soft);
  height: 100%;
  min-height: 60px;
}
.wf-custom-body strong {
  font-weight: 600;
  color: var(--ink-deep);
  font-size: 13px;
}
.wf-custom.shape-circle .wf-custom-body {
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

/* ---------- MODAL ---------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(60, 70, 180, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}
.modal-backdrop.hidden { display: none; }
.modal {
  background: var(--paper);
  border: var(--stroke-w) solid var(--ink);
  border-radius: 6px;
  padding: 20px;
  width: 440px;
  max-width: calc(100% - 32px);
}
.modal.modal-wide { width: 720px; }

/* Drawing modal */
.draw-toolbar {
  display: flex;
  gap: 14px;
  align-items: center;
  margin: 12px 0;
  padding: 8px 10px;
  border: 1.5px solid var(--ink);
  border-radius: 4px;
  background: var(--paper-2);
  flex-wrap: wrap;
}
.tool-group {
  display: flex;
  align-items: center;
  gap: 4px;
}
.tool-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin-right: 4px;
}
.tool-btn, .size-btn, .color-btn {
  width: 28px;
  height: 28px;
  border: 1.5px solid var(--ink-faint);
  background: var(--paper);
  border-radius: 3px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--ink-deep);
  padding: 0;
  cursor: pointer;
}
.tool-btn:hover, .size-btn:hover, .color-btn:hover { border-color: var(--ink); }
.tool-btn.active, .size-btn.active, .color-btn.active {
  border-color: var(--ink);
  box-shadow: 0 0 0 2px var(--accent-soft);
}
.size-btn .dot {
  display: inline-block;
  background: var(--ink-deep);
  border-radius: 50%;
}
.size-btn .dot.d-2 { width: 4px; height: 4px; }
.size-btn .dot.d-4 { width: 8px; height: 8px; }
.size-btn .dot.d-8 { width: 14px; height: 14px; }
.color-btn { border-radius: 50%; }
.ghost-btn.small { padding: 4px 10px; font-size: 12px; }

.draw-canvas-wrap {
  border: 1.5px solid var(--ink);
  border-radius: 4px;
  background: var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 20px 20px;
  overflow: hidden;
  display: flex;
  justify-content: center;
}
#drawCanvas {
  display: block;
  cursor: crosshair;
  touch-action: none;
  max-width: 100%;
}

/* Sketch component shown inside placed component */
.wf-sketch {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px;
}
.wf-sketch img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
}
.modal h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
}
.field { display: block; margin-top: 12px; }
.field span {
  display: block;
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin-bottom: 4px;
}
.field input, .field textarea, .field select {
  width: 100%;
  border: 1.5px solid var(--ink);
  border-radius: 3px;
  padding: 8px 10px;
  font-family: inherit;
  font-size: 13px;
  background: var(--paper);
  color: var(--ink-deep);
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: 2px solid var(--accent-soft);
  outline-offset: 1px;
}
.field textarea { resize: vertical; }
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 16px;
}

/* ---------- TOAST ---------- */
.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--ink);
  color: var(--paper);
  padding: 10px 16px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 500;
  z-index: 200;
}
.toast.hidden { display: none; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--paper-2); }
::-webkit-scrollbar-thumb { background: var(--ink-faint); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--ink-soft); }