/* Pocket CAD Studio ----------------------------------------------------- */

.cad-game {
  --cad-ink: #182238;
  --cad-navy: #17213b;
  --cad-blue: #3a67ad;
  --cad-blue-dark: #254477;
  --cad-cyan: #65d4e8;
  --cad-soft: #edf4ff;
  --cad-grid: #7f9ab8;
  --cad-success: #087461;
  --cad-sun: #f1bd4d;
  position: relative;
  isolation: isolate;
  overflow: hidden;
  color: var(--cad-ink);
  background:
    radial-gradient(circle at 100% 0, rgba(101, 212, 232, 0.2), transparent 18rem),
    linear-gradient(145deg, #ffffff, #edf3ff);
  border: 2px solid #91add1;
}

.cad-game::before {
  position: absolute;
  z-index: -1;
  top: -110px;
  right: -95px;
  width: 270px;
  height: 270px;
  content: "";
  opacity: 0.14;
  border: 34px double var(--cad-blue);
  border-radius: 50%;
  transform: rotate(14deg);
}

.cad-game button {
  min-width: 48px;
  min-height: 48px;
  touch-action: manipulation;
  cursor: pointer;
  font: inherit;
}

.cad-game button:focus-visible,
.cad-game summary:focus-visible {
  outline: 4px solid var(--cad-sun);
  outline-offset: 3px;
}

.cad-game button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.cad-game-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.85rem;
  margin-bottom: 0.8rem;
}

.cad-game-header > div:first-child {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 0.7rem;
}

.cad-game-header small,
.cad-game-header strong {
  display: block;
}

.cad-game-header small {
  color: var(--cad-blue-dark);
  font-size: 0.72rem;
  font-weight: 850;
}

.cad-game-header strong {
  margin-top: 0.08rem;
  font-size: clamp(1.15rem, 3vw, 1.55rem);
  line-height: 1.05;
}

.cad-app-icon {
  display: grid;
  width: 54px;
  height: 54px;
  flex: 0 0 54px;
  place-items: center;
  color: white;
  background:
    linear-gradient(135deg, transparent 46%, rgba(255, 255, 255, 0.18) 47% 53%, transparent 54%),
    var(--cad-blue-dark);
  border: 3px solid white;
  border-radius: 15px;
  box-shadow: 0 4px 0 rgba(23, 33, 59, 0.2);
  font-size: 1.55rem;
}

.cad-status-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem;
}

.cad-status-pills span {
  padding: 0.38rem 0.58rem;
  color: var(--cad-blue-dark);
  background: rgba(255, 255, 255, 0.9);
  border: 2px solid #b4c6df;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 900;
}

.cad-brief {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) minmax(150px, 0.5fr);
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
  padding: 0.78rem 0.9rem;
  color: #26324d;
  background: #fff5cf;
  border: 2px solid #e0b84f;
  border-radius: 15px;
}

.cad-brief > span {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  background: white;
  border-radius: 12px;
  font-size: 1.35rem;
}

.cad-brief small,
.cad-toolbox small,
.cad-viewport-toolbar small,
.cad-analysis-heading small {
  color: var(--cad-blue-dark);
  font-size: 0.64rem;
  font-weight: 950;
  letter-spacing: 0.09em;
}

.cad-brief h3 {
  margin: 0.08rem 0;
  font-size: 1rem;
}

.cad-brief p {
  margin: 0;
  font-size: 0.78rem;
}

.cad-mode-switch {
  display: grid;
  width: min(580px, 100%);
  gap: 0.55rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0 auto 0.85rem;
  padding: 0.45rem;
  background: #dfe9f8;
  border: 2px solid #9bb4d5;
  border-radius: 16px;
}

.cad-mode-switch button {
  display: grid;
  min-width: 0;
  min-height: 68px;
  align-items: center;
  gap: 0.1rem 0.45rem;
  grid-template-columns: auto minmax(0, 1fr);
  padding: 0.55rem 0.65rem;
  color: var(--cad-blue-dark);
  background: rgba(255, 255, 255, 0.76);
  border: 2px solid transparent;
  border-radius: 12px;
  text-align: left;
}

.cad-mode-switch button > span {
  grid-row: 1 / 3;
  font-size: 1.4rem;
}

.cad-mode-switch button strong,
.cad-mode-switch button small {
  display: block;
}

.cad-mode-switch button small {
  color: #52647d;
  font-size: 0.68rem;
  font-weight: 750;
}

.cad-mode-switch button[aria-pressed="true"] {
  color: white;
  background: var(--cad-blue-dark);
  border-color: var(--cad-cyan);
  box-shadow: 0 3px 0 rgba(23, 33, 59, 0.2);
}

.cad-mode-switch button[aria-pressed="true"] small {
  color: #d8f7fc;
}

.cad-brief details {
  min-width: 0;
  align-self: stretch;
  padding: 0.5rem 0.6rem;
  background: rgba(255, 255, 255, 0.7);
  border-radius: 10px;
  font-size: 0.74rem;
}

.cad-brief summary {
  cursor: pointer;
  font-weight: 900;
}

.cad-brief ul {
  margin: 0.45rem 0 0;
  padding-left: 1.1rem;
}

.cad-brief li + li {
  margin-top: 0.25rem;
}

.cad-workspace-layout {
  display: grid;
  align-items: stretch;
  gap: 0.75rem;
  grid-template-columns: minmax(185px, 0.55fr) minmax(390px, 1.45fr);
}

.cad-toolbox,
.cad-viewport-panel,
.cad-analysis {
  min-width: 0;
  background: rgba(255, 255, 255, 0.9);
  border: 2px solid #b4c6df;
  border-radius: 17px;
  box-shadow: 0 7px 20px rgba(33, 58, 99, 0.08);
}

.cad-toolbox {
  display: flex;
  flex-direction: column;
  padding: 0.7rem;
}

.cad-toolbox > div:first-child {
  margin-bottom: 0.55rem;
}

.cad-toolbox > div:first-child strong,
.cad-viewport-toolbar strong {
  display: block;
  margin-top: 0.08rem;
}

.cad-tool-grid {
  display: grid;
  gap: 0.45rem;
}

.cad-tool-button {
  display: grid;
  min-width: 0;
  min-height: 72px !important;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-rows: auto auto;
  align-items: center;
  gap: 0.1rem 0.5rem;
  padding: 0.5rem 0.6rem;
  color: var(--cad-blue-dark);
  background: #f7faff;
  border: 2px solid #8ba6ca;
  border-radius: 11px;
  box-shadow: 0 3px 0 rgba(37, 68, 119, 0.16);
  text-align: left;
}

.cad-tool-button > span {
  display: grid;
  width: 34px;
  height: 34px;
  grid-row: 1 / -1;
  place-items: center;
  color: white;
  background: var(--cad-blue-dark);
  border-radius: 9px;
  font-size: 1.1rem;
}

.cad-tool-button small {
  color: #53647d;
  font-size: 0.63rem;
  line-height: 1.2;
}

.cad-tool-button:not(:disabled):hover,
.cad-tool-button.is-selected {
  color: white;
  background: var(--cad-blue-dark);
  border-color: var(--cad-blue-dark);
  transform: translateY(-1px);
}

.cad-tool-button:is(:hover, .is-selected) > span {
  color: var(--cad-blue-dark);
  background: var(--cad-cyan);
}

.cad-tool-button:is(:hover, .is-selected) small {
  color: white;
  opacity: 0.82;
}

.cad-part-actions {
  display: grid;
  margin-top: auto;
  padding-top: 0.65rem;
  gap: 0.4rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.cad-part-actions button {
  min-width: 0;
  padding: 0.4rem 0.5rem;
  color: var(--cad-blue-dark);
  background: white;
  border: 2px solid #8ba6ca;
  border-radius: 10px;
  font-size: 0.72rem;
  font-weight: 850;
}

.cad-part-actions button:first-child {
  grid-column: 1 / -1;
}

.cad-part-actions small {
  display: block;
  margin-top: 0.1rem;
}

.cad-viewport-panel {
  overflow: hidden;
}

.cad-viewport-toolbar {
  display: flex;
  min-height: 62px;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
  padding: 0.6rem 0.7rem;
  color: white;
  background: var(--cad-navy);
}

.cad-viewport-toolbar small {
  color: #a5eaf5;
}

.cad-camera-controls {
  display: flex;
  gap: 0.3rem;
}

.cad-camera-controls button {
  width: 48px;
  padding: 0.2rem;
  color: white;
  background: #293b63;
  border: 2px solid #7091c6;
  border-radius: 10px;
  box-shadow: none;
  font-size: 1.15rem;
  font-weight: 950;
}

.cad-camera-controls button:hover {
  color: var(--cad-navy);
  background: var(--cad-cyan);
  border-color: var(--cad-cyan);
}

.cad-viewport {
  position: relative;
  min-height: 0;
  overflow: hidden;
  background:
    linear-gradient(rgba(116, 149, 189, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(116, 149, 189, 0.1) 1px, transparent 1px),
    radial-gradient(circle at 50% 45%, #f8fbff, #dfeafb);
  background-size: 22px 22px, 22px 22px, auto;
}

.cad-canvas-scroll {
  width: 100%;
  overflow: hidden;
  box-sizing: border-box;
  padding: clamp(8px, 2.2vw, 22px);
}

.cad-canvas-scroll:focus-visible {
  outline: 4px solid var(--cad-sun);
  outline-offset: -4px;
}

.cad-model-canvas {
  position: relative;
  width: 100%;
  max-width: 700px;
  aspect-ratio: 640 / 430;
  margin: 0 auto;
}

.cad-viewport svg {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 640 / 430;
}

.cad-floor-cell {
  fill: rgba(255, 255, 255, 0.83);
  stroke: var(--cad-grid);
  stroke-width: 2;
}

.cad-floor-cell.is-clearance {
  fill: url("#cad-clearance-stripes");
  stroke: #bf5b62;
  stroke-width: 2.5;
}

.cad-face {
  fill: var(--cad-solid);
  stroke: rgba(20, 31, 52, 0.82);
  stroke-linejoin: round;
  stroke-width: 2.4;
}

.cad-face-side-a {
  filter: brightness(0.78);
}

.cad-face-side-b,
.cad-cylinder-side {
  filter: brightness(0.9);
}

.cad-face-top {
  filter: brightness(1.15);
}

.cad-solid {
  filter: drop-shadow(0 5px 3px rgba(26, 37, 58, 0.18));
}

.cad-ghost-device {
  pointer-events: none;
  animation: cad-ghost-pulse 2.4s ease-in-out infinite;
}

.cad-ghost-device polygon {
  fill: rgba(75, 197, 220, 0.14);
  stroke: #248aa0;
  stroke-dasharray: 8 5;
  stroke-width: 3;
}

.cad-ghost-device text {
  fill: #216b7b;
  font-size: 10px;
  font-weight: 950;
  letter-spacing: 0.08em;
  text-anchor: middle;
}

.cad-axis {
  fill: var(--cad-blue-dark);
  stroke: var(--cad-blue-dark);
  stroke-width: 3;
}

.cad-axis text {
  stroke: none;
  font-size: 12px;
  font-weight: 950;
}

.cad-selected-tile {
  pointer-events: none;
}

.cad-selected-tile polygon {
  fill: rgba(241, 189, 77, 0.26);
  stroke: #77500a;
  stroke-dasharray: 8 5;
  stroke-width: 4;
  animation: cad-selected-tile-pulse 1.3s ease-in-out infinite;
}

.cad-selected-tile circle {
  fill: var(--cad-blue-dark);
  stroke: white;
  stroke-width: 4;
  filter: drop-shadow(0 4px 4px rgba(23, 33, 59, 0.24));
}

.cad-selected-tile text {
  fill: white;
  font-size: 17px;
  font-weight: 950;
  text-anchor: middle;
}

.cad-cell-picker {
  padding: 0 clamp(0.5rem, 1.7vw, 0.75rem) 0.6rem;
}

.cad-cell-selection {
  display: grid;
  min-width: 0;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.5rem;
  padding: 0.58rem 0.65rem;
  color: var(--cad-blue-dark);
  background: #edf4ff;
  border: 2px solid #9bb4d5;
  border-radius: 12px;
}

.cad-cell-selection > div {
  min-width: 0;
}

.cad-cell-selection small,
.cad-cell-selection strong,
.cad-cell-selection span {
  display: block;
}

.cad-cell-selection small {
  font-size: 0.61rem;
  font-weight: 950;
  letter-spacing: 0.08em;
}

.cad-cell-selection strong {
  margin-top: 0.04rem;
  font-size: 0.86rem;
}

.cad-cell-selection span {
  margin-top: 0.08rem;
  color: #52647d;
  font-size: 0.68rem;
  line-height: 1.25;
}

.cad-place-selected {
  min-width: min(190px, 38vw) !important;
  padding: 0.48rem 0.62rem;
  color: white;
  background: var(--cad-blue-dark);
  border: 2px solid var(--cad-blue-dark);
  border-radius: 10px;
  font-size: 0.74rem;
  font-weight: 900;
}

.cad-place-selected:not(:disabled):hover {
  color: var(--cad-blue-dark);
  background: var(--cad-sun);
}

.cad-placement-layer {
  display: grid;
  min-width: 0;
  gap: 0.38rem;
  grid-template-columns: repeat(5, minmax(44px, 1fr));
}

.cad-placement-cell {
  display: grid;
  min-width: 0 !important;
  min-height: 56px !important;
  box-sizing: border-box;
  grid-template-columns: auto minmax(0, 1fr);
  place-items: center start;
  gap: 0.28rem;
  padding: 0.35rem;
  color: #173d72;
  background: #f7faff;
  border: 2px solid #91acd0;
  border-radius: 9px;
  box-shadow: 0 2px 0 rgba(23, 33, 59, 0.12);
  user-select: none;
  transition:
    transform 150ms ease,
    background-color 150ms ease,
    border-color 150ms ease;
}

.cad-placement-cell > span {
  display: grid;
  width: 27px;
  height: 27px;
  place-items: center;
  color: white;
  background: var(--cad-blue);
  border-radius: 7px;
  font-size: 1rem;
  font-weight: 950;
}

.cad-placement-cell small {
  overflow: hidden;
  font-size: clamp(0.54rem, 1.5vw, 0.66rem);
  font-weight: 900;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cad-placement-cell:hover,
.cad-placement-cell:focus-visible,
.cad-placement-cell.is-selected {
  color: white;
  background: var(--cad-blue-dark);
  border-color: white;
  box-shadow: 0 0 0 4px rgba(101, 212, 232, 0.44);
  transform: translateY(-1px);
}

.cad-placement-cell.is-clearance {
  color: #8a2638;
  background:
    repeating-linear-gradient(
      -45deg,
      #fff4f5 0 6px,
      #ffe5e8 6px 12px
    );
  border-color: #b86c79;
}

.cad-placement-cell.is-clearance:is(:hover, :focus-visible, .is-selected) {
  color: white;
  background: #7b2940;
  border-color: white;
}

.cad-placement-cell.is-occupied {
  box-shadow:
    inset 0 0 0 3px rgba(58, 103, 173, 0.16),
    0 2px 0 rgba(23, 33, 59, 0.12);
}

.cad-placement-cell.is-selected > span {
  color: var(--cad-blue-dark);
  background: var(--cad-sun);
}

.cad-viewport-help {
  margin: 0 0.55rem 0.55rem;
  padding: 0.42rem 0.55rem;
  color: #eaf6ff;
  background: rgba(23, 33, 59, 0.88);
  border-radius: 9px;
  font-size: 0.68rem;
  text-align: center;
}

@keyframes cad-ghost-pulse {
  0%,
  100% {
    opacity: 0.62;
  }
  50% {
    opacity: 1;
  }
}

@keyframes cad-selected-tile-pulse {
  0%,
  100% {
    opacity: 0.72;
  }
  50% {
    opacity: 1;
  }
}

.cad-analysis {
  margin-top: 0.75rem;
  padding: 0.75rem;
}

.cad-analysis-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.7rem;
}

.cad-analysis-heading h3 {
  margin: 0.08rem 0 0;
  font-size: 1.05rem;
}

.cad-analysis-heading > span {
  padding: 0.36rem 0.58rem;
  color: #6e3d14;
  background: #fff0c9;
  border: 2px solid #e5b556;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 950;
}

.cad-analysis-heading > span.is-ready {
  color: #075b4d;
  background: #dcf8ef;
  border-color: #4ea794;
}

.cad-meters {
  display: grid;
  gap: 0.65rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 0.65rem;
}

.cad-meters label {
  display: grid;
  gap: 0.25rem;
  padding: 0.55rem;
  color: var(--cad-blue-dark);
  background: var(--cad-soft);
  border-radius: 10px;
}

.cad-meters label > span {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.78rem;
}

.cad-meters output {
  font-weight: 950;
}

.cad-meters meter {
  width: 100%;
  height: 16px;
  accent-color: var(--cad-success);
}

.cad-checklist {
  display: grid;
  margin: 0.65rem 0 0;
  padding: 0;
  gap: 0.4rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  list-style: none;
}

.cad-checklist li {
  display: grid;
  min-width: 0;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 0.4rem;
  padding: 0.48rem;
  color: #6f4052;
  background: #fff1f3;
  border: 1px solid #e2b3bc;
  border-radius: 10px;
}

.cad-checklist li > span {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  color: white;
  background: #9b4c61;
  border-radius: 50%;
  font-weight: 950;
}

.cad-checklist strong,
.cad-checklist small {
  display: block;
}

.cad-checklist strong {
  font-size: 0.72rem;
}

.cad-checklist small {
  margin-top: 0.08rem;
  font-size: 0.62rem;
  line-height: 1.2;
}

.cad-checklist li.is-ready {
  color: #075b4d;
  background: #e5f9f3;
  border-color: #87c6b8;
}

.cad-checklist li.is-ready > span {
  background: var(--cad-success);
}

.cad-safety-note,
.cad-feedback {
  display: grid;
  align-items: center;
  gap: 0.55rem;
  margin-top: 0.7rem;
  padding: 0.65rem 0.75rem;
  border-radius: 11px;
}

.cad-safety-note {
  grid-template-columns: auto minmax(0, 1fr);
  color: #3d4c64;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid #b8c8dc;
  font-size: 0.73rem;
  font-weight: 700;
}

.cad-feedback {
  min-height: 58px;
  grid-template-columns: auto minmax(0, 1fr);
  color: var(--cad-blue-dark);
  background: var(--cad-soft);
  border: 1px solid #9ab5da;
  border-left: 5px solid var(--cad-blue);
}

.cad-feedback strong {
  white-space: nowrap;
}

.cad-feedback.is-success {
  color: #075b4d;
  background: #e0f8f1;
  border-color: #69b3a2;
  border-left-color: var(--cad-success);
}

.cad-game-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.55rem;
  margin-top: 0.65rem;
}

.cad-reset-button,
.cad-validate-button {
  padding: 0.6rem 0.8rem;
  border: 2px solid var(--cad-blue-dark);
  border-radius: 12px;
  box-shadow: 0 3px 0 rgba(23, 33, 59, 0.2);
  font-weight: 900;
}

.cad-reset-button {
  color: var(--cad-blue-dark);
  background: white;
}

.cad-validate-button {
  color: white;
  background: var(--cad-blue-dark);
}

.cad-reset-button:hover,
.cad-validate-button:hover {
  color: var(--cad-blue-dark);
  background: var(--cad-sun);
}

@media (max-width: 820px) {
  .cad-workspace-layout {
    grid-template-columns: 1fr;
  }

  .cad-tool-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .cad-part-actions {
    margin-top: 0;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .cad-part-actions button:first-child {
    grid-column: auto;
  }
}

@media (max-width: 620px) {
  .cad-game-header,
  .cad-analysis-heading {
    flex-direction: column;
  }

  .cad-status-pills {
    justify-content: flex-start;
  }

  .cad-brief {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .cad-brief details {
    grid-column: 1 / -1;
  }

  .cad-tool-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cad-part-actions,
  .cad-checklist,
  .cad-meters {
    grid-template-columns: 1fr;
  }

  .cad-viewport-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .cad-camera-controls {
    display: grid;
    grid-template-columns: repeat(4, minmax(48px, 1fr));
  }

  .cad-camera-controls button {
    width: auto;
  }

  .cad-canvas-scroll {
    padding-inline: 8px;
  }

  .cad-cell-selection {
    grid-template-columns: 1fr;
  }

  .cad-place-selected {
    width: 100%;
    min-width: 0 !important;
  }

  .cad-placement-layer {
    gap: 0.25rem;
  }

  .cad-placement-cell {
    min-height: 52px !important;
    grid-template-columns: 1fr;
    gap: 0.05rem;
    padding: 0.25rem 0.15rem;
    place-items: center;
  }

  .cad-feedback {
    grid-template-columns: 1fr;
  }

  .cad-game-actions {
    align-items: stretch;
    flex-direction: column-reverse;
  }

  .cad-game-actions button {
    width: 100%;
  }
}

@media (max-width: 390px) {
  .cad-tool-grid {
    grid-template-columns: 1fr;
  }

  .cad-part-actions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cad-part-actions button:first-child {
    grid-column: 1 / -1;
  }
}

@media (pointer: coarse) {
  .cad-placement-cell {
    min-height: 58px !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cad-game *,
  .cad-game *::before,
  .cad-game *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

/* Pocket CAD Studio: direct snap-together play ------------------------- */

.cad-brief-progress {
  display: grid;
  min-width: 92px;
  justify-items: center;
  padding: 0.45rem 0.65rem;
  color: var(--cad-blue-dark);
  background: rgba(255, 255, 255, 0.78);
  border: 2px solid rgba(37, 68, 119, 0.18);
  border-radius: 13px;
}

.cad-brief-progress strong {
  font-size: 1.25rem;
  line-height: 1;
}

.cad-brief-progress span {
  margin-top: 0.18rem;
  font-size: 0.62rem;
  font-weight: 900;
  text-align: center;
  text-transform: uppercase;
}

.cad-snap-workspace {
  grid-template-columns: minmax(0, 1.35fr) minmax(270px, 0.65fr);
}

.cad-snap-panel {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 0.7rem;
  padding: 0.75rem;
  background:
    radial-gradient(circle at 100% 0, rgba(101, 212, 232, 0.2), transparent 10rem),
    rgba(255, 255, 255, 0.94);
  border: 2px solid #b4c6df;
  border-radius: 17px;
  box-shadow: 0 7px 20px rgba(33, 58, 99, 0.08);
}

.cad-snap-heading small,
.cad-snap-heading strong {
  display: block;
}

.cad-snap-heading small {
  color: var(--cad-blue-dark);
  font-size: 0.64rem;
  font-weight: 950;
  letter-spacing: 0.1em;
}

.cad-snap-heading strong {
  margin-top: 0.12rem;
  font-size: 1rem;
  line-height: 1.2;
}

.cad-snap-steps {
  display: grid;
  gap: 0.5rem;
}

.cad-snap-step {
  position: relative;
  display: grid;
  min-width: 0;
  min-height: 78px !important;
  align-items: center;
  gap: 0.45rem;
  grid-template-columns: auto auto minmax(0, 1fr);
  padding: 0.52rem 0.58rem;
  overflow: hidden;
  color: #4d5a70;
  background: #f4f6fa;
  border: 2px solid #ccd5e2;
  border-radius: 13px;
  text-align: left;
}

.cad-snap-step > span:last-child {
  min-width: 0;
}

.cad-snap-step strong,
.cad-snap-step small {
  display: block;
}

.cad-snap-step strong {
  color: inherit;
  font-size: 0.84rem;
  line-height: 1.15;
}

.cad-snap-step small {
  margin-top: 0.16rem;
  color: #66758a;
  font-size: 0.65rem;
  line-height: 1.28;
}

.cad-snap-number,
.cad-snap-icon {
  display: grid;
  place-items: center;
  border-radius: 10px;
}

.cad-snap-number {
  width: 28px;
  height: 28px;
  color: white;
  background: #7f8da3;
  font-size: 0.72rem;
  font-weight: 950;
}

.cad-snap-icon {
  width: 38px;
  height: 38px;
  color: white;
  background: var(--cad-blue-dark);
  font-size: 1.15rem;
}

.cad-snap-step.is-available {
  color: var(--cad-blue-dark);
  background: #fff8d9;
  border-color: var(--cad-sun);
  box-shadow: 0 4px 0 rgba(168, 116, 10, 0.2);
  animation: cad-ready-glow 1.7s ease-in-out infinite;
}

.cad-snap-step.is-available:hover {
  background: #ffeaa5;
  transform: translateY(-1px);
}

.cad-snap-step.is-complete {
  color: #075b4d;
  background: #e0f8f1;
  border-color: #69b3a2;
}

.cad-snap-step.is-complete .cad-snap-number {
  background: var(--cad-success);
}

.cad-finish-picker {
  display: grid;
  gap: 0.4rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0;
  padding: 0.6rem;
  background: #edf4ff;
  border: 1px solid #b4c6df;
  border-radius: 13px;
}

.cad-toolbox .cad-finish-picker {
  margin-top: 0.7rem;
}

.cad-finish-picker legend {
  padding-inline: 0.25rem;
  color: var(--cad-blue-dark);
  font-size: 0.68rem;
  font-weight: 950;
  text-transform: uppercase;
}

.cad-finish-picker button {
  display: grid;
  min-width: 0;
  min-height: 64px !important;
  place-items: center;
  gap: 0.15rem;
  padding: 0.38rem 0.25rem;
  color: var(--cad-blue-dark);
  background: white;
  border: 2px solid #b4c6df;
  border-radius: 10px;
  font-size: 0.62rem;
  font-weight: 900;
  text-align: center;
}

.cad-finish-picker button span {
  font-size: 1.2rem;
}

.cad-finish-picker button[aria-pressed="true"] {
  background: #fff4bf;
  border-color: var(--cad-sun);
  box-shadow: inset 0 -3px 0 rgba(168, 116, 10, 0.16);
}

.cad-snap-actions {
  display: grid;
  gap: 0.45rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: auto;
}

.cad-snap-actions button {
  min-width: 0;
  padding: 0.5rem;
  color: var(--cad-blue-dark);
  background: white;
  border: 2px solid #9bb1ce;
  border-radius: 11px;
  font-size: 0.7rem;
  font-weight: 900;
}

.cad-model-canvas {
  position: relative;
}

.cad-model-pop {
  position: absolute;
  top: 18%;
  right: 14%;
  padding: 0.38rem 0.62rem;
  color: white;
  background: linear-gradient(135deg, #d75ba3, #6d54b7);
  border: 3px solid white;
  border-radius: 999px;
  box-shadow: 0 6px 14px rgba(34, 41, 76, 0.2);
  font-size: 0.78rem;
  font-weight: 950;
  letter-spacing: 0.08em;
  opacity: 0;
  pointer-events: none;
  transform: rotate(-8deg) scale(0.6);
}

.cad-game[data-cad-pulse]:not([data-cad-pulse=""]) .cad-model-pop {
  animation: cad-model-pop 620ms cubic-bezier(0.2, 0.85, 0.2, 1.2);
}

.cad-game[data-cad-pulse]:not([data-cad-pulse=""]) .cad-model-solids {
  transform-box: fill-box;
  transform-origin: center bottom;
  animation: cad-model-snap 480ms cubic-bezier(0.2, 0.85, 0.2, 1.2);
}

.cad-game[data-cad-finish="steel"] .cad-solid {
  filter: saturate(0.28) brightness(1.2) contrast(1.06);
}

.cad-game[data-cad-finish="neon"] .cad-solid {
  filter:
    hue-rotate(58deg)
    saturate(1.65)
    drop-shadow(0 0 5px rgba(81, 213, 255, 0.75));
}

@keyframes cad-ready-glow {
  0%,
  100% {
    box-shadow: 0 4px 0 rgba(168, 116, 10, 0.2), 0 0 0 rgba(241, 189, 77, 0);
  }
  50% {
    box-shadow: 0 4px 0 rgba(168, 116, 10, 0.2), 0 0 0 5px rgba(241, 189, 77, 0.18);
  }
}

@keyframes cad-model-pop {
  0% {
    opacity: 0;
    transform: rotate(-12deg) scale(0.55);
  }
  42% {
    opacity: 1;
    transform: rotate(-5deg) scale(1.12);
  }
  100% {
    opacity: 0;
    transform: rotate(1deg) scale(1);
  }
}

@keyframes cad-model-snap {
  0% {
    transform: translateY(-16px) scale(1.04);
  }
  58% {
    transform: translateY(3px) scale(0.99);
  }
  100% {
    transform: translateY(0) scale(1);
  }
}

@media (max-width: 880px) {
  .cad-snap-workspace {
    grid-template-columns: 1fr;
  }

  .cad-snap-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .cad-mode-switch {
    grid-template-columns: 1fr;
  }

  .cad-brief-progress {
    grid-column: 1 / -1;
    width: 100%;
  }

  .cad-snap-steps {
    grid-template-columns: 1fr;
  }

  .cad-snap-step {
    min-height: 72px !important;
  }

  .cad-finish-picker {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 390px) {
  .cad-finish-picker {
    grid-template-columns: 1fr;
  }

  .cad-finish-picker button {
    min-height: 50px !important;
    grid-template-columns: auto 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cad-snap-step.is-available,
  .cad-game[data-cad-pulse]:not([data-cad-pulse=""]) .cad-model-pop,
  .cad-game[data-cad-pulse]:not([data-cad-pulse=""]) .cad-model-solids {
    animation: none !important;
  }
}

@media (prefers-contrast: more) {
  .cad-game,
  .cad-toolbox,
  .cad-viewport-panel,
  .cad-analysis,
  .cad-tool-button,
  .cad-placement-cell,
  .cad-checklist li {
    border-width: 3px;
  }
}

@media (forced-colors: active) {
  .cad-game,
  .cad-brief,
  .cad-toolbox,
  .cad-viewport-panel,
  .cad-viewport,
  .cad-analysis,
  .cad-checklist li,
  .cad-feedback,
  .cad-safety-note {
    color: CanvasText;
    background: Canvas;
    border-color: CanvasText;
    box-shadow: none;
  }

  .cad-tool-button,
  .cad-part-actions button,
  .cad-camera-controls button,
  .cad-placement-cell,
  .cad-place-selected,
  .cad-reset-button,
  .cad-validate-button {
    color: ButtonText;
    background: ButtonFace;
    border-color: ButtonText;
    box-shadow: none;
  }

  .cad-tool-button.is-selected,
  .cad-placement-cell:is(:focus-visible, .is-selected) {
    color: HighlightText;
    background: Highlight;
    border-color: Highlight;
    forced-color-adjust: none;
  }

  .cad-floor-cell,
  .cad-face,
  .cad-ghost-device polygon,
  .cad-selected-tile polygon {
    fill: Canvas;
    stroke: CanvasText;
    filter: none;
  }

  .cad-floor-cell.is-clearance {
    fill: Canvas;
    stroke: Highlight;
    stroke-width: 4;
    forced-color-adjust: none;
  }
}