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

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #ffffff;
  font-family: "area", sans-serif;
}

/* ── SVG canvas ─────────────────────────────────────────────────────────── */

#main-svg {
  display: block;
  width: 100vw;
  height: calc(100vh - 52px);
  background: #ffffff;
  touch-action: none;
}

/* Draggable node labels */
#main-svg [data-node-id] {
  cursor: grab;
  transition: opacity 0.18s;
  opacity: 0.88;
}
#main-svg [data-node-id]:hover {
  opacity: 1;
}
#main-svg.dragging {
  cursor: grabbing;
}
#main-svg.dragging [data-node-id] {
  cursor: grabbing;
}

/* ── Error banner ───────────────────────────────────────────────────────── */

.error-msg {
  display: none;
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 200;
  padding: 10px 20px;
  border-radius: 4px;
  background: #ffffff;
  border: 1px solid #ec6608;
  color: #ec6608;
  font-family: "area", sans-serif;
  font-size: 13px;
  line-height: 1.5;
  max-width: 460px;
  text-align: center;
  box-shadow: 0 2px 10px rgba(236, 102, 8, 0.15);
}

/* ── Templates panel ────────────────────────────────────────────────────── */

.templates-panel {
  position: fixed;
  bottom: 52px;
  left: 0;
  right: 0;
  z-index: 8;
  background: #ffffff;
  border-top: 1px solid #ec6608;
  padding: 14px 24px 16px;
  display: flex;
  align-items: flex-start;
  gap: 18px;
}

.templates-panel[hidden] {
  display: none;
}

.templates-panel-label {
  font-family: "area", sans-serif;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  color: #ec6608;
  white-space: nowrap;
  padding-top: 10px;
  flex-shrink: 0;
}

.templates-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.template-tile {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: 7px 13px 8px;
  border: 1px solid #ec6608;
  border-radius: 5px;
  background: #ffffff;
  cursor: pointer;
  outline: none;
  transition: background 0.12s, border-color 0.12s, box-shadow 0.12s;
  min-width: 96px;
}

.template-tile:hover {
  background: #ec6608;
}

.template-tile:hover .tile-name,
.template-tile:hover .tile-desc {
  color: #ffffff;
}

.template-tile:active {
  background: #ec6608;
}

.template-tile.active {
  background: #ec6608;
  border-color: #ec6608;
  box-shadow: 0 0 0 1px #ec6608 inset;
}

.template-tile.active .tile-name,
.template-tile.active .tile-desc {
  color: #ffffff;
}

.tile-name {
  font-family: "area", sans-serif;
  font-size: 12px;
  font-weight: 700;
  color: #ec6608;
  white-space: nowrap;
}

.tile-desc {
  font-family: "area", sans-serif;
  font-size: 10px;
  font-weight: 100;
  color: #ec6608;
  white-space: nowrap;
}

/* ── Control bar ────────────────────────────────────────────────────────── */

.control-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 52px;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 0 24px;
  background: #ffffff;
  border-top: 1px solid #ec6608;
}

.control-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.control-group--right {
  margin-left: auto;
}

.control-label {
  font-family: "area", sans-serif;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: #ec6608;
  white-space: nowrap;
  user-select: none;
}

/* ── Range sliders ──────────────────────────────────────────────────────── */

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 78px;
  height: 3px;
  border-radius: 2px;
  background: rgba(236, 102, 8, 0.2);
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #ec6608;
  cursor: pointer;
  border: none;
}

input[type="range"]::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #ec6608;
  cursor: pointer;
  border: none;
}

/* ── Select ─────────────────────────────────────────────────────────────── */

select {
  font-family: "area", sans-serif;
  font-size: 11px;
  color: #ec6608;
  border: 1px solid #ec6608;
  border-radius: 3px;
  padding: 3px 6px;
  background: #ffffff;
  cursor: pointer;
  outline: none;
}

select:hover {
  background: #ec6608;
  color: #ffffff;
}

/* ── Buttons ────────────────────────────────────────────────────────────── */

button {
  font-family: "area", sans-serif;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: #ec6608;
  border: 1px solid #ec6608;
  border-radius: 3px;
  background: #ffffff;
  padding: 5px 11px;
  cursor: pointer;
  outline: none;
  user-select: none;
  transition: background 0.1s, color 0.1s;
}

button:hover {
  background: #ec6608;
  color: #ffffff;
}

button:active {
  background: #ec6608;
  color: #ffffff;
}

.btn-templates {
  color: #ec6608;
  font-weight: 700;
}

.btn-templates.open {
  background: #ec6608;
  color: #ffffff;
  border-color: #ec6608;
}

/* ── Responsive / Mobile ─────────────────────────────────────────────────── */

@media (max-width: 600px) {
  :root { --bar-h: 92px; }

  /* Two-row control bar */
  .control-bar {
    height: var(--bar-h);
    flex-wrap: wrap;
    align-content: space-around;
    gap: 0 10px;
    padding: 6px 14px;
  }

  /* Hide text labels — the controls are self-explanatory on touch */
  .control-label {
    display: none;
  }

  /* First 4 groups (sliders + select): fill row 1 equally */
  .control-bar > .control-group:nth-child(-n+4) {
    flex: 1 1 auto;
    justify-content: center;
  }

  /* Button groups (5+): auto-size, stay on row 2 */
  .control-bar > .control-group:nth-child(n+5) {
    flex: 0 0 auto;
  }

  /* Range sliders: bigger thumb for touch */
  input[type="range"] {
    width: 60px;
    height: 4px;
    cursor: pointer;
  }
  input[type="range"]::-webkit-slider-thumb {
    width: 18px;
    height: 18px;
  }
  input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #ec6608;
    cursor: pointer;
    border: none;
  }

  /* Select: compact but readable */
  select {
    font-size: 12px;
    padding: 4px 6px;
    max-width: 90px;
  }

  /* Buttons: taller tap target */
  button {
    padding: 6px 12px;
    font-size: 10px;
    -webkit-tap-highlight-color: transparent;
  }

  /* SVG canvas: account for taller bar */
  #main-svg {
    height: calc(100vh - var(--bar-h));
  }

  /* Templates panel: sit above taller bar, scroll if needed */
  .templates-panel {
    bottom: var(--bar-h);
    flex-direction: column;
    gap: 10px;
    max-height: 44vh;
    overflow-y: auto;
    padding: 12px 16px 14px;
  }

  /* Tiles: slightly more compact */
  .template-tile {
    min-width: 78px;
    padding: 6px 10px 7px;
    -webkit-tap-highlight-color: transparent;
  }
}