* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #f3f5f7;
  --panel: #ffffff;
  --border: #dfe3e8;
  --border-strong: #cbd2da;
  --text: #252b33;
  --muted: #707985;
  --accent: #2469e8;
  --accent-soft: #eaf1ff;
  --simulated: #16825d;
  --configurable: #b76b08;
  --diagram: #89919b;
}

html, body { height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 13px;
  color: var(--text);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ---------- toolbar ---------- */
#toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 54px;
  padding: 8px 14px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  flex: 0 0 auto;
  box-shadow: 0 1px 5px rgba(26, 34, 45, 0.04);
  z-index: 10;
}
.brandblock { display: flex; flex-direction: column; gap: 1px; min-width: 132px; }
.brand { display: flex; align-items: center; gap: 6px; font-weight: 760; font-size: 15px; letter-spacing: -0.15px; color: inherit; text-decoration: none; }
.brand-mark { width: 24px; height: 16px; flex: 0 0 auto; }
.brand-ink { color: #0a1a33; }
.brand-accent { color: #1361fa; }
.model-badge { color: var(--muted); font-size: 9px; letter-spacing: 0.35px; text-transform: uppercase; }
.toolgroup { display: flex; align-items: center; gap: 3px; }
.toolgroup + .toolgroup { border-left: 1px solid var(--border); padding-left: 10px; }
#toolbar .spacer { flex: 1; }
button {
  font: inherit;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 6px 10px;
  cursor: pointer;
  white-space: nowrap;
}
button:hover { background: #f1f4f8; border-color: var(--border-strong); }
button:focus-visible, select:focus-visible, input:focus-visible, #canvas:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
button:disabled { cursor: default; opacity: 0.45; }
button.active { background: var(--accent-soft); border-color: #9dbcf4; color: var(--accent); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.primary:hover { background: #2559c4; }
button.danger { color: #c0392b; border-color: #e6b6b0; }
button.danger:hover { background: #fdf0ee; }
.icon-button { padding: 2px 8px; border: 0; background: transparent; color: var(--muted); font-size: 22px; line-height: 1; }
#toolbar select {
  font: inherit;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 6px 8px;
  cursor: pointer;
  max-width: min(280px, 40vw);
}
#toolbar select:hover { background: #f0f3f8; }

.share-dialog {
  width: min(430px, calc(100vw - 28px)); max-height: calc(100vh - 28px); overflow: auto;
  margin: auto; padding: 20px; border: 1px solid var(--border-strong); border-radius: 13px;
  background: var(--panel); color: var(--text); box-shadow: 0 24px 70px rgba(22, 31, 44, .24);
}
.share-dialog::backdrop { background: rgba(28, 36, 48, .38); backdrop-filter: blur(2px); }
.share-dialog-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; }
.share-dialog h2 { margin-top: 2px; font-size: 18px; letter-spacing: -.25px; }
.eyebrow { color: var(--accent); font-size: 9px; font-weight: 760; letter-spacing: .7px; text-transform: uppercase; }
.share-qr { width: min(290px, 100%); margin: 17px auto 10px; padding: 9px; border: 1px solid var(--border); border-radius: 9px; background: #fff; }
.share-qr svg { display: block; width: 100%; height: auto; }
.share-qr-note { min-height: 18px; text-align: center; color: var(--muted); font-size: 10.5px; }
.share-url-label { display: block; margin: 14px 0 5px; color: var(--muted); font-size: 9px; font-weight: 720; letter-spacing: .45px; text-transform: uppercase; }
.share-url { width: 100%; resize: none; padding: 8px 9px; border: 1px solid var(--border); border-radius: 7px; background: #f7f9fb; color: #4d5865; font: 9.5px/1.35 ui-monospace, SFMono-Regular, Menlo, monospace; }
.share-actions { display: flex; gap: 7px; margin-top: 12px; }

/* ---------- layout ---------- */
main { flex: 1; display: flex; min-height: 0; position: relative; }

#palette {
  flex: 0 0 252px;
  overflow-y: auto;
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 0 10px 16px;
}
.library-head {
  position: sticky;
  top: 0;
  z-index: 3;
  margin: 0 -2px;
  padding: 14px 2px 10px;
  background: linear-gradient(#fff 82%, rgba(255,255,255,0));
}
.library-title-row { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 9px; }
.library-title { font-size: 12px; font-weight: 730; }
.library-count { color: var(--muted); font-size: 10px; }
.palette-search-wrap { position: relative; }
.palette-search-wrap::before {
  content: '⌕'; position: absolute; left: 9px; top: 50%; transform: translateY(-51%);
  color: var(--muted); font-size: 15px; pointer-events: none;
}
#paletteSearch {
  width: 100%; height: 34px; padding: 6px 30px 6px 28px;
  border: 1px solid var(--border); border-radius: 8px; background: #f8fafc;
  color: var(--text); font: inherit;
}
#paletteSearch:focus { background: #fff; border-color: var(--accent); outline: 2px solid rgba(36,105,232,0.13); }
.search-shortcut { position: absolute; right: 8px; top: 50%; transform: translateY(-50%); color: #9aa2ad; font-size: 10px; }
.capability-legend { display: flex; gap: 10px; margin-top: 8px; color: var(--muted); font-size: 9px; }
.capability-legend span { display: inline-flex; align-items: center; gap: 4px; }
.cap-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--diagram); flex: 0 0 auto; }
.cap-dot.simulated { background: var(--simulated); box-shadow: 0 0 0 2px rgba(22,130,93,0.10); }
.cap-dot.configurable { background: var(--configurable); box-shadow: 0 0 0 2px rgba(183,107,8,0.10); }
.cap-dot.diagram { background: #fff; border: 1.5px solid var(--diagram); }
.palette-group { border-top: 1px solid #edf0f3; }
.palette-group:first-of-type { border-top: 0; }
.palette-group > summary {
  list-style: none; display: flex; align-items: center; gap: 6px; cursor: pointer;
  padding: 10px 4px 7px; color: #59626e; font-size: 10px; font-weight: 730;
  letter-spacing: 0.55px; text-transform: uppercase; user-select: none;
}
.palette-group > summary::-webkit-details-marker { display: none; }
.palette-group > summary::before { content: '›'; font-size: 15px; line-height: 8px; transform: translateY(-1px); transition: transform 150ms ease; }
.palette-group[open] > summary::before { transform: rotate(90deg) translateX(-1px); }
.group-count { margin-left: auto; font-size: 9px; font-weight: 600; color: #9aa2ad; }
.catlist { display: flex; flex-direction: column; padding-bottom: 8px; }
.palitem {
  width: 100%;
  min-width: 0;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) 12px;
  align-items: center;
  gap: 8px;
  padding: 6px 6px;
  border: 1px solid transparent;
  border-radius: 7px;
  cursor: pointer;
  background: transparent;
  user-select: none;
  text-align: left;
  transition: background 120ms ease, border-color 120ms ease, transform 120ms ease;
}
.palitem:hover { border-color: #d7e2f6; background: #f4f7fc; transform: translateX(1px); }
.palitem.is-active { border-color: #99baf3; background: var(--accent-soft); }
.palitem[hidden], .palette-group[hidden] { display: none; }
.palitem svg { width: 40px; height: 30px; pointer-events: none; }
.pal-copy { min-width: 0; pointer-events: none; }
.pal-label { display: block; color: var(--text); font-size: 11px; font-weight: 620; line-height: 1.2; }
.pal-desc {
  display: block; margin-top: 2px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  font-size: 9px; color: var(--muted); line-height: 1.2;
  pointer-events: none;
}
.palette-empty { display: none; color: var(--muted); font-size: 11px; line-height: 1.45; padding: 18px 6px; }
.palette-empty.is-visible { display: block; }

#canvasWrap { flex: 1; position: relative; min-width: 0; }
#canvas {
  width: 100%;
  height: 100%;
  display: block;
  background: #fbfbfc;
  touch-action: none;
}
#canvas.tool-active { cursor: crosshair; }
#canvas text { user-select: none; pointer-events: none; }
#toolMode {
  position: absolute; left: 14px; top: 14px; display: none; align-items: center; gap: 8px;
  max-width: min(430px, calc(100% - 180px)); padding: 8px 11px;
  color: #174b9f; background: rgba(240,246,255,0.96); border: 1px solid #a9c4f3;
  border-radius: 8px; box-shadow: 0 5px 18px rgba(30,70,130,0.11); font-size: 11px;
  pointer-events: none; animation: mode-in 150ms ease-out;
}
#toolMode.is-visible { display: flex; }
#toolMode::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px rgba(36,105,232,0.12); }
@keyframes mode-in { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }
.canvas-controls {
  position: absolute; right: 14px; top: 14px; display: flex; gap: 2px; align-items: center;
  padding: 4px; border: 1px solid rgba(205,211,219,0.9); border-radius: 9px;
  background: rgba(255,255,255,0.94); box-shadow: 0 4px 15px rgba(30,38,48,0.08);
}
.canvas-controls button { min-width: 30px; height: 28px; padding: 3px 7px; border-color: transparent; background: transparent; }
.canvas-controls button:hover { background: #eef2f7; }
.canvas-controls button.active { background: var(--accent-soft); border-color: #b7ccf2; }
.control-divider { width: 1px; height: 18px; margin: 0 3px; background: var(--border); }
.pulse-controls {
  position: absolute; left: 50%; bottom: 14px; transform: translateX(-50%);
  display: flex; align-items: center; gap: 3px; max-width: calc(100% - 28px);
  padding: 4px; border: 1px solid rgba(183,198,219,0.92); border-radius: 9px;
  background: rgba(255,255,255,0.96); box-shadow: 0 5px 18px rgba(30,50,80,0.10);
  transition: opacity 150ms ease, transform 150ms ease, visibility 150ms ease;
}
.pulse-controls.is-idle { opacity: 0; visibility: hidden; transform: translate(-50%, 4px); pointer-events: none; }
.pulse-controls button { min-width: 29px; height: 28px; padding: 3px 7px; border-color: transparent; background: transparent; }
.pulse-controls button:hover { background: #eef4fb; }
.pulse-controls select {
  min-width: 0; height: 28px; padding: 3px 6px; color: var(--text); font: inherit;
  border: 0; border-left: 1px solid var(--border); border-radius: 0; background: transparent;
}
.pulse-controls #pulseDisplay { width: 132px; }
.pulse-controls #pulseSpeed { width: 78px; }
.pulse-scale-note { padding: 0 5px 0 2px; color: var(--muted); font-size: 8.5px; white-space: nowrap; }
#status {
  position: absolute;
  left: 10px;
  bottom: 8px;
  font-size: 11px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.85);
  padding: 3px 8px;
  border-radius: 5px;
  pointer-events: none;
}

.context-menu {
  position: absolute;
  z-index: 30;
  width: 178px;
  padding: 5px;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  background: rgba(255,255,255,0.98);
  box-shadow: 0 14px 34px rgba(27,36,48,0.18), 0 2px 7px rgba(27,36,48,0.08);
  backdrop-filter: blur(10px);
}
.context-menu[hidden] { display: none; }
.context-menu button {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 8px;
  border-color: transparent;
  background: transparent;
  text-align: left;
}
.context-menu button:hover { border-color: transparent; background: #f0f4fa; }
.context-menu button[hidden] { display: none; }
.context-menu kbd { color: #929aa5; font: 10px/1 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
.context-menu .context-danger { color: #b63c31; }
.context-menu .context-danger:hover { background: #fdf0ee; }
.direct-hint { margin: 10px 12px 2px; padding: 9px 10px; border: 1px solid #dbe5f5; border-radius: 7px; background: #f7faff; color: #536174; font-size: 11px; line-height: 1.35; }
.direct-hint b { display: block; margin-bottom: 2px; color: #2f5e9f; font-size: 10px; letter-spacing: .03em; text-transform: uppercase; }
.direct-hint span { display: block; }

#inspector {
  flex: 0 0 286px;
  overflow-y: auto;
  background: var(--panel);
  border-left: 1px solid var(--border);
  padding: 16px 14px 20px;
}

.mobile-toolbar-actions, .mobile-add, .mobile-properties, .mobile-trash, .mobile-tool-actions, .sheet-close { display: none; }

.mobile-menu {
  width: min(360px, calc(100vw - 28px)); margin: auto; padding: 18px;
  border: 1px solid var(--border-strong); border-radius: 14px; background: var(--panel);
  color: var(--text); box-shadow: 0 24px 70px rgba(22, 31, 44, .24);
}
.mobile-menu::backdrop { background: rgba(28, 36, 48, .38); backdrop-filter: blur(2px); }
.mobile-menu-head { display: flex; align-items: center; justify-content: space-between; }
.mobile-menu h2 { font-size: 17px; letter-spacing: -.2px; }
.mobile-menu-label { display: block; margin: 14px 0 5px; color: var(--muted); font-size: 10px; font-weight: 760; letter-spacing: .55px; text-transform: uppercase; }
.mobile-menu select { width: 100%; min-height: 40px; padding: 7px 9px; border: 1px solid var(--border); border-radius: 8px; background: #fff; color: var(--text); font: inherit; }
.mobile-menu-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 14px; }
.mobile-menu-actions button { min-height: 42px; text-align: left; }

#mobileBackdrop {
  position: fixed; inset: 0; z-index: 35;
  background: rgba(24, 31, 42, .26); backdrop-filter: blur(1px);
}

@media (max-width: 1500px) {
  #toolbar { gap: 7px; padding: 7px 9px; }
  .brandblock { min-width: 118px; }
  .model-badge { font-size: 8px; }
  .toolgroup + .toolgroup { padding-left: 7px; }
  #toolbar button { padding-left: 6px; padding-right: 6px; }
  #toolbar select { max-width: 210px; }
}
@media (max-width: 1100px) {
  #palette { flex-basis: 220px; }
  #inspector { flex-basis: 250px; }
  .model-badge { display: none; }
  .brandblock { min-width: auto; }
  .pulse-controls { bottom: 8px; }
  #status { bottom: 48px; max-width: calc(100% - 20px); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
}

@media (max-width: 899px) {
  body { min-height: 100dvh; }
  #toolbar { min-height: 54px; gap: 7px; padding: 6px 10px; }
  .brandblock { min-width: 0; }
  .brand { font-size: 14px; }
  .model-badge, #toolbar .examples-group, #toolbar .file-group, #toolbar .draw-group,
  #toolbar .export-group, #toolbar .spacer { display: none; }
  #toolbar .history-group { margin-left: auto; border-left: 0; padding-left: 0; gap: 2px; }
  #toolbar .history-group button { min-width: 38px; min-height: 38px; padding: 4px; font-size: 18px; }
  .mobile-toolbar-actions { display: block; }
  .mobile-icon-button { min-width: 42px; min-height: 38px; padding: 4px 8px; border: 0; background: transparent; color: var(--muted); font-size: 17px; letter-spacing: 1px; }

  #palette, #inspector {
    position: fixed; z-index: 40; right: 0; bottom: 0; left: 0;
    display: block; width: auto; max-width: none; padding: 0;
    border: 1px solid var(--border-strong); border-bottom: 0; border-radius: 17px 17px 0 0;
    box-shadow: 0 -16px 48px rgba(27, 36, 48, .18);
    transform: translateY(calc(100% + 18px)); transition: transform 190ms ease-out;
    overflow: hidden; overscroll-behavior: contain;
  }
  #palette { height: min(74dvh, 620px); }
  #inspector { height: min(62dvh, 560px); }
  #palette.mobile-open, #inspector.mobile-open { transform: translateY(0); }
  #paletteContent, #inspectorContent { height: 100%; overflow-y: auto; overscroll-behavior: contain; }
  #paletteContent { padding: 0 12px calc(20px + env(safe-area-inset-bottom)); }
  #inspectorContent { padding: 18px 14px calc(24px + env(safe-area-inset-bottom)); }
  #palette .library-head { padding-top: 17px; }
  .sheet-close {
    position: absolute; z-index: 5; top: 9px; right: 9px; display: block;
    width: 38px; height: 38px; padding: 0; border: 0; border-radius: 50%;
    background: rgba(241, 244, 248, .95); color: var(--muted); font-size: 23px; line-height: 1;
  }
  #palette .sheet-close { top: 11px; }
  #palette .library-title-row { padding-right: 42px; }

  #canvasWrap { min-width: 0; }
  #toolMode { top: 10px; left: 10px; max-width: calc(100% - 126px); padding: 7px 9px; font-size: 10px; }
  .canvas-controls { top: 10px; right: 10px; gap: 0; padding: 3px; }
  .canvas-controls button { min-width: 31px; height: 31px; padding: 3px 5px; font-size: 11px; }
  .canvas-controls #btnGrid, .canvas-controls #btnSnap { min-width: 36px; }
  .control-divider { margin: 0 1px; }
  .pulse-controls { bottom: calc(65px + env(safe-area-inset-bottom)); max-width: calc(100% - 24px); }
  .pulse-controls #pulseDisplay { width: 114px; }
  .pulse-controls #pulseSpeed { width: 66px; }
  .pulse-scale-note { display: none; }
  #status { bottom: calc(70px + env(safe-area-inset-bottom)); left: 8px; max-width: calc(100% - 88px); font-size: 10px; }

  .mobile-tool-actions.is-visible {
    position: absolute; z-index: 9; right: 12px; bottom: max(12px, env(safe-area-inset-bottom)); left: 12px;
    display: flex; align-items: center; gap: 7px; padding: 6px;
    border: 1px solid #b7ccf2; border-radius: 11px; background: rgba(255,255,255,.97);
    box-shadow: 0 8px 22px rgba(30,50,80,.14);
  }
  .mobile-tool-actions span { min-width: 0; flex: 1; padding: 0 5px; overflow: hidden; color: #285cae; font-size: 11px; font-weight: 700; text-overflow: ellipsis; white-space: nowrap; }
  .mobile-tool-actions button { min-height: 36px; padding: 5px 10px; }
  .mobile-tool-actions #btnMobileToolDone { border-color: var(--accent); background: var(--accent); color: #fff; }

  .mobile-add {
    position: absolute; z-index: 8; right: max(14px, env(safe-area-inset-right)); bottom: max(14px, env(safe-area-inset-bottom));
    display: inline-flex; align-items: center; gap: 6px; min-height: 48px; padding: 8px 16px;
    border-color: var(--accent); border-radius: 999px; background: var(--accent); color: #fff;
    box-shadow: 0 8px 22px rgba(36, 105, 232, .3); font-weight: 720;
  }
  .mobile-add:hover { background: #2559c4; }
  .mobile-add span { font-size: 24px; font-weight: 340; line-height: .65; }
  .mobile-properties:not([hidden]) {
    position: absolute; z-index: 8; right: max(14px, env(safe-area-inset-right)); bottom: calc(71px + env(safe-area-inset-bottom));
    display: block; min-height: 37px; padding: 6px 11px; border-color: #b7ccf2; border-radius: 999px;
    background: rgba(255,255,255,.96); color: #285cae; box-shadow: 0 5px 15px rgba(30,50,80,.12); font-size: 11px; font-weight: 700;
  }
  .mobile-trash:not([hidden]) {
    position: absolute; z-index: 8; right: max(14px, env(safe-area-inset-right)); bottom: calc(116px + env(safe-area-inset-bottom));
    display: inline-flex; align-items: center; gap: 5px; min-height: 37px; padding: 6px 11px;
    border-color: #e5b9b9; border-radius: 999px; background: rgba(255,255,255,.96); color: #b33636;
    box-shadow: 0 5px 15px rgba(80,30,30,.12); font-size: 11px; font-weight: 700;
  }
  .mobile-trash:not([hidden]):active { background: #fbeaea; }
  #inspector .field { min-height: 38px; margin-bottom: 10px; }
  #inspector .field input[type="number"], #inspector .field input[type="text"], #inspector .field select { min-height: 34px; }
  #inspector .btnrow button { min-height: 42px; }
  #canvas.tool-active ~ .mobile-add, #canvas.tool-active ~ .mobile-properties, #canvas.tool-active ~ .mobile-trash { display: none; }
}
#inspector h3 { font-size: 15px; letter-spacing: -0.15px; margin: 0; }
.inspector-head { margin-bottom: 15px; }
.inspector-title-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.cap-badge {
  display: inline-flex; align-items: center; gap: 5px; flex: 0 0 auto;
  padding: 3px 6px; border-radius: 999px; font-size: 9px; font-weight: 700; letter-spacing: 0.2px;
}
.cap-badge.simulated { color: #0d6a49; background: #e5f5ef; }
.cap-badge.configurable { color: #935405; background: #fff2dc; }
.cap-badge.diagram { color: #66707c; background: #eef0f2; }
.inspector-desc { margin-top: 6px; color: var(--muted); font-size: 11px; line-height: 1.42; }
.inspector-note { margin-top: 9px; padding: 8px 9px; border-left: 2px solid var(--configurable); background: #fff9ef; color: #76501c; font-size: 10.5px; line-height: 1.4; }
.inspector-note.diagram { border-color: var(--diagram); background: #f5f6f7; color: #616a75; }
.insp-section { border-top: 1px solid #eceff2; padding-top: 12px; margin-top: 12px; }
.insp-section-title { margin-bottom: 9px; color: #747e89; font-size: 9.5px; font-weight: 760; letter-spacing: 0.65px; text-transform: uppercase; }
.measurement-card { margin: 11px 0 2px; padding: 11px; border: 1px solid #dce8e3; border-radius: 9px; background: #f6fbf9; }
.measurement-card.no-signal { border-color: #e3e6e9; background: #f8f9fa; }
.measurement-status { display: flex; align-items: center; gap: 7px; margin-bottom: 9px; font-weight: 680; font-size: 11px; }
.signal-light { width: 8px; height: 8px; border-radius: 50%; background: var(--simulated); box-shadow: 0 0 0 4px rgba(22,130,93,0.10); }
.no-signal .signal-light { background: #a3aab2; box-shadow: none; }
.measurement-grid { display: grid; grid-template-columns: 1fr auto; gap: 6px 10px; font-size: 10.5px; }
.measurement-grid dt { color: var(--muted); }
.measurement-grid dd { margin: 0; color: var(--text); font-variant-numeric: tabular-nums; text-align: right; }
.pulse-timeline { margin-top: 9px; padding-top: 8px; border-top: 1px solid #dce8e3; }
.pulse-timeline svg { display: block; width: 100%; height: auto; min-height: 30px; overflow: visible; }
.pulse-timeline span { display: block; margin-top: 2px; color: #6f7d8c; font-size: 8.5px; text-align: right; }
.camera-profile { margin-top: 9px; padding-top: 8px; border-top: 1px solid #dce8e3; }
.camera-profile svg { display: block; width: 100%; height: 40px; }
.camera-profile span { display: block; color: #6f7d8c; font-size: 8.5px; text-align: right; }
.measurement-foot { margin-top: 9px; color: #78818b; font-size: 9px; line-height: 1.35; }
.empty-inspector { padding: 2px 2px 0; }
.empty-kicker { margin-bottom: 5px; color: var(--accent); font-size: 9.5px; font-weight: 760; letter-spacing: 0.7px; text-transform: uppercase; }
.quick-steps { margin: 13px 0 0 20px; color: #59636f; font-size: 11px; line-height: 1.55; }
.quick-steps li { margin-bottom: 6px; padding-left: 3px; }
.field { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 8px; }
.field > span:first-child { flex: 1; color: var(--muted); font-size: 12px; }
.field input[type="number"], .field input[type="text"], .field select {
  flex: 0 0 104px;
  width: 104px;
  font: inherit;
  padding: 4px 6px;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: #fbfcfd;
}
.field input[type="color"] { flex: 0 0 40px; width: 40px; height: 26px; padding: 1px; border: 1px solid var(--border); border-radius: 5px; background: none; }
.field input:focus, .field select:focus { border-color: var(--accent); }
/* wavefront-shaper function layers */
.lsechead {
  font-size: 10.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--muted);
  margin: 14px 0 8px;
  border-top: 1px solid var(--border);
  padding-top: 10px;
}
.layer {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 8px 2px;
  margin-bottom: 8px;
  background: #f8fafc;
}
.layerrow { display: flex; gap: 6px; margin-bottom: 8px; }
.layerrow select { flex: 1; font: inherit; padding: 4px 6px; border: 1px solid var(--border); border-radius: 5px; background: #fff; }
.layerdel { flex: 0 0 26px; padding: 2px; color: var(--muted); }
.layerdel:hover { color: #c0392b; background: #fdf0ee; }
.layeradd { width: 100%; margin-top: 2px; border-style: dashed; color: var(--muted); }
.layeradd:hover { color: var(--accent); border-color: var(--accent); }
.layer .field input[type="number"], .layer .field input[type="text"] { flex: 0 0 84px; width: 84px; }

.negsign { color: var(--text); font-weight: 700; margin-right: 3px; }
.field input[data-neg] { flex: 0 0 88px; width: 88px; }

.btnrow { display: flex; gap: 8px; margin-top: 14px; }
.btnrow button { flex: 1; }
.hint { color: var(--muted); font-size: 12px; line-height: 1.5; margin-top: 6px; }