/* ============================================================
   ASTROPHOTOGRAPHY TOOLS — application styles
   Sibling concern to directory.css. Loaded only by the tool
   templates. Dark instrument UI on the site's space tokens.
   ============================================================ */

:root {
  --tool-bg: var(--color-space);            /* #0B0E14 */
  --tool-panel: var(--color-space-light);   /* #141820 */
  --tool-raised: var(--color-space-lighter);/* #1C2230 */
  --tool-line: #262d3d;
  --tool-line-soft: #1a2030;
  --tool-ink: #F0F1F4;
  --tool-ink-2: #A7ADBB;
  --tool-ink-3: #6C7280;
  --tool-accent: hsl(268, 75%, 66%);        /* site violet lifted for dark bg */
  --tool-accent-deep: hsl(268, 70%, 42%);   /* --color-red */
  --tool-good: var(--color-laminar);        /* in band */
  --tool-warn: var(--color-strata);         /* marginal / estimated */
  --tool-bad: #E5484D;                      /* fail state, tools only */
  --tool-info: var(--color-meridian);       /* interpolated / informational */
  --tool-mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;
  --tool-ui: -apple-system, BlinkMacSystemFont, 'SF Pro Text', system-ui, sans-serif;
  --tool-radius: 10px;
  --night-ramp: 600ms;
}

/* ---------- page scaffold ---------- */

/* [hidden] must win over any author display value in the tool */
.tool-page [hidden] { display: none !important; }

/* the page body behind the tool goes dark too — no white gap above the footer */
body.tool-body { background: var(--color-space); }

.tool-page {
  background: var(--tool-bg);
  color: var(--tool-ink);
  font-family: var(--tool-ui);
  transition: filter var(--night-ramp) var(--ease-in-out);
  /* native form controls (number spinners, date picker) render for dark UI */
  color-scheme: dark;
}

.tool-masthead {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-8) var(--space-6) var(--space-4);
}
.tool-eyebrow {
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: var(--weight-demi);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--tool-accent);
  margin-bottom: var(--space-2);
}
.tool-title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
  color: var(--tool-ink);
  margin: 0 0 var(--space-2);
}
.tool-sub {
  font-size: var(--text-md);
  color: var(--tool-ink-2);
  max-width: 60ch;
  margin: 0;
}

/* ---------- app frame ---------- */

.tool-app {
  max-width: var(--max-width);
  margin: 0 auto var(--space-16);
  padding: 0 var(--space-6);
}

.tool-toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  padding: var(--space-3) 0;
}

.tool-toolbar .spacer { flex: 1; }

.mode-switch {
  display: inline-flex;
  background: var(--tool-panel);
  border: 1px solid var(--tool-line);
  border-radius: var(--radius-full);
  padding: 3px;
}
.mode-switch button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--tool-ink-2);
  font: 600 var(--text-sm)/1 var(--tool-ui);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  cursor: pointer;
}
.mode-switch button[aria-pressed="true"] {
  background: var(--tool-accent-deep);
  color: #fff;
}

.tool-btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--tool-panel);
  border: 1px solid var(--tool-line);
  color: var(--tool-ink-2);
  font: 500 var(--text-sm)/1 var(--tool-ui);
  padding: 9px 14px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color var(--duration-fast), color var(--duration-fast);
}
.tool-btn:hover { border-color: var(--tool-accent); color: var(--tool-ink); }
.tool-btn.primary {
  background: var(--tool-accent-deep);
  border-color: transparent;
  color: #fff;
}
.tool-btn i { font-size: 1rem; }

.tool-page :focus-visible {
  outline: 2px solid var(--tool-accent);
  outline-offset: 2px;
}

/* ---------- layout: stage + inspector ---------- */

.tool-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: var(--space-4);
  align-items: start;
}
.stage-col { min-width: 0; }

.tool-stage {
  position: relative;
  background: var(--tool-panel);
  border: 1px solid var(--tool-line);
  border-radius: var(--tool-radius);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  min-height: 420px;
}

/* sky placeholder before Aladin arrives */
.stage-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  color: var(--tool-ink-3);
  font-size: var(--text-sm);
  background:
    radial-gradient(1px 1px at 20% 30%, #ffffff55 0, transparent 100%),
    radial-gradient(1px 1px at 70% 60%, #ffffff44 0, transparent 100%),
    radial-gradient(1.5px 1.5px at 40% 80%, #ffffff33 0, transparent 100%),
    radial-gradient(1px 1px at 85% 20%, #ffffff40 0, transparent 100%),
    var(--tool-bg);
}
.stage-placeholder .ph-spin { animation: mo-spin 1.6s linear infinite; font-size: 20px; }
@keyframes mo-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  .stage-placeholder .ph-spin { animation: none; }
}

.stage-error {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  text-align: center;
  padding: var(--space-6);
  color: var(--tool-ink-2);
  background: color-mix(in srgb, var(--tool-bg) 88%, transparent);
  z-index: 30;
}
.stage-error.visible { display: flex; }

#aladin-target { position: absolute; inset: 0; }

/* frame overlay SVG sits over the sky */
.frame-overlay {
  position: absolute;
  inset: 0;
  z-index: 20;
  pointer-events: none;
}
.frame-overlay .spotlight { fill: rgba(4, 6, 10, 0.62); pointer-events: none; }
.frame-overlay .frame-rect {
  fill: transparent;
  stroke: var(--tool-accent);
  stroke-width: 1.5;
  pointer-events: all;
  cursor: grab;
  touch-action: none; /* touch drags manipulate the frame, never scroll the page */
}
.frame-overlay .frame-rect.dragging { cursor: grabbing; }
.frame-overlay.nofit .frame-rect { stroke: var(--tool-bad); }
.frame-overlay .mosaic-line {
  stroke: var(--tool-accent);
  stroke-opacity: 0.45;
  stroke-width: 1;
  stroke-dasharray: 4 4;
  pointer-events: none;
}
.frame-overlay .rot-handle {
  fill: var(--tool-panel);
  stroke: var(--tool-accent);
  stroke-width: 1.5;
  pointer-events: all;
  cursor: crosshair;
  touch-action: none;
}
@media (pointer: coarse) {
  .frame-overlay .rot-handle { r: 14px; }
}
.frame-overlay .guide-rect {
  fill: rgba(50, 215, 75, 0.08);
  stroke: var(--tool-good);
  stroke-width: 1;
  stroke-dasharray: 5 3;
  pointer-events: none;
}
.frame-overlay .moon-disc {
  fill: rgba(240, 241, 244, 0.10);
  stroke: var(--tool-ink-3);
  stroke-width: 1;
  pointer-events: none;
}
.frame-overlay text {
  font: 11px var(--tool-mono);
  fill: var(--tool-ink-2);
  pointer-events: none;
}

/* Aladin attribution must stay visible — never touch */
.aladin-logo, .aladin-cooFrame + * { opacity: 1 !important; }

/* planetary true-scale stage */
.pl-stage {
  position: absolute;
  inset: 0;
  display: block;
}
.pl-stage svg { width: 100%; height: 100%; display: block; }
.pl-sensor-outline { fill: none; stroke: var(--tool-ink-3); stroke-width: 1; }
.pl-crop-rect { fill: none; stroke: var(--tool-accent); stroke-width: 1.5; }
.pl-planet.overflow-clip { opacity: 0.92; }
.pl-rings { fill: none; stroke-width: 1.2; opacity: 0.9; }
.pl-stage-label { font: 11px var(--tool-mono); fill: var(--tool-ink-3); }

/* planet strip: every body at the same scale */
.planet-strip {
  display: flex;
  align-items: flex-end;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--tool-panel);
  border: 1px solid var(--tool-line);
  border-radius: var(--tool-radius);
  margin-top: var(--space-4);
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--tool-raised) transparent;
}
.planet-strip::-webkit-scrollbar { height: 6px; }
.planet-strip::-webkit-scrollbar-track { background: transparent; }
.planet-strip::-webkit-scrollbar-thumb { background: var(--tool-raised); border-radius: 3px; }
.planet-chip {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--tool-ink-3);
  font: 500 var(--text-xs)/1 var(--tool-ui);
  min-width: 64px;
}
.planet-chip:hover { border-color: var(--tool-line); color: var(--tool-ink-2); }
.planet-chip[aria-pressed="true"] {
  border-color: var(--tool-accent);
  color: var(--tool-ink);
  background: var(--tool-raised);
}
.planet-chip .disc-box {
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.planet-chip .mono { font-family: var(--tool-mono); font-size: 10px; }

/* ---------- inspector ---------- */

.tool-inspector {
  background: var(--tool-panel);
  border: 1px solid var(--tool-line);
  border-radius: var(--tool-radius);
  overflow: hidden;
}

.insp-section { border-bottom: 1px solid var(--tool-line-soft); padding: var(--space-4); }
.insp-section:last-child { border-bottom: 0; }
.insp-label {
  font-size: var(--text-xs);
  font-weight: var(--weight-demi);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--tool-ink-3);
  margin: 0 0 var(--space-3);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.insp-label .ph { color: var(--tool-accent); }

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}
.field-row.single { grid-template-columns: 1fr; }
.tool-field label {
  display: block;
  font-size: 11px;
  color: var(--tool-ink-3);
  margin-bottom: 4px;
}
.tool-field input,
.tool-field select {
  width: 100%;
  background: var(--tool-raised);
  border: 1px solid var(--tool-line);
  border-radius: var(--radius-sm);
  color: var(--tool-ink);
  font: 500 var(--text-sm)/1.2 var(--tool-mono);
  padding: 8px 10px;
}
.tool-field select { font-family: var(--tool-ui); }
.tool-field input:focus, .tool-field select:focus {
  border-color: var(--tool-accent);
  outline: none;
}

/* readouts double as inputs: same mono, quiet chrome */
.readout-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2) var(--space-4);
}
.readout { min-width: 0; }
.readout .k {
  font-size: 11px;
  color: var(--tool-ink-3);
  display: block;
}
.readout .v {
  font: 600 var(--text-md)/1.3 var(--tool-mono);
  font-variant-numeric: tabular-nums;
  color: var(--tool-ink);
  white-space: nowrap;
}
.readout .v .unit { font-size: 11px; color: var(--tool-ink-3); font-weight: 400; }
#guide-count .v, #fit-readout .v { white-space: normal; font-size: var(--text-base); }
.readout .v.good { color: var(--tool-good); }
.readout .v.warn { color: var(--tool-warn); }
.readout .v.bad  { color: var(--tool-bad); }

/* data provenance chips */
.chip {
  display: inline-block;
  font: 600 10px/1 var(--tool-mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 3px 7px;
  border-radius: var(--radius-full);
  border: 1px solid var(--tool-line);
  color: var(--tool-ink-3);
  vertical-align: middle;
}
.chip.published { color: var(--tool-good); border-color: color-mix(in srgb, var(--tool-good) 40%, transparent); }
.chip.interpolated { color: var(--tool-info); border-color: color-mix(in srgb, var(--tool-info) 40%, transparent); }
.chip.estimated, .chip.placeholder, .chip.user { color: var(--tool-warn); border-color: color-mix(in srgb, var(--tool-warn) 40%, transparent); }
.chip.projected { color: var(--tool-info); border-color: color-mix(in srgb, var(--tool-info) 40%, transparent); }

/* ---------- the gauge: band and marker, the site-wide verdict language ---------- */

.mo-gauge { margin: var(--space-3) 0 var(--space-1); }
.mo-gauge .gauge-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 6px;
}
.mo-gauge .gauge-title { font-size: var(--text-sm); color: var(--tool-ink-2); }
.mo-gauge .gauge-verdict {
  font: 600 var(--text-sm)/1 var(--tool-ui);
}
.mo-gauge .gauge-verdict.good { color: var(--tool-good); }
.mo-gauge .gauge-verdict.warn { color: var(--tool-warn); }
.mo-gauge .gauge-verdict.bad  { color: var(--tool-bad); }
.mo-gauge svg { width: 100%; height: 34px; display: block; overflow: visible; }
.mo-gauge .track { stroke: var(--tool-line); stroke-width: 2; }
.mo-gauge .tick  { stroke: var(--tool-line); stroke-width: 1; }
.mo-gauge .band  { stroke: color-mix(in srgb, var(--tool-good) 55%, transparent); stroke-width: 6; stroke-linecap: round; }
.mo-gauge.threshold .band { stroke: color-mix(in srgb, var(--tool-warn) 55%, transparent); }
.mo-gauge .marker { fill: var(--tool-ink); }
.mo-gauge .marker.out { fill: var(--tool-bad); }
.mo-gauge text { font: 10px var(--tool-mono); fill: var(--tool-ink-3); }
.gauge-note { font-size: 11px; color: var(--tool-ink-3); margin-top: 4px; }

/* ---------- ceilings (planetary solver) ---------- */

.ceilings { display: flex; flex-direction: column; gap: var(--space-2); }
.ceiling {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-3);
  background: var(--tool-raised);
  border: 1px solid var(--tool-line);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
}
.ceiling .ph { color: var(--tool-ink-3); font-size: 18px; }
.ceiling.binding { border-color: var(--tool-warn); }
.ceiling.binding .ph { color: var(--tool-warn); }
.ceiling .name { font-size: var(--text-sm); color: var(--tool-ink-2); }
.ceiling .sub { font-size: 11px; color: var(--tool-ink-3); }
.ceiling .fps {
  font: 700 var(--text-lg)/1 var(--tool-mono);
  font-variant-numeric: tabular-nums;
}
.binding-sentence {
  font-size: var(--text-sm);
  color: var(--tool-ink-2);
  line-height: var(--leading-normal);
  background: var(--tool-raised);
  border-left: 3px solid var(--tool-warn);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: var(--space-3);
  margin-top: var(--space-3);
}
.binding-sentence strong { color: var(--tool-ink); }

/* ---------- target picker / command palette ---------- */

.target-row {
  display: flex;
  gap: var(--space-2);
  align-items: center;
  flex-wrap: wrap;
  padding: var(--space-3) 0;
}
.target-search {
  flex: 1;
  min-width: 220px;
  position: relative;
}
.target-search input {
  width: 100%;
  background: var(--tool-panel);
  border: 1px solid var(--tool-line);
  border-radius: var(--radius-md);
  color: var(--tool-ink);
  font: 500 var(--text-sm)/1 var(--tool-ui);
  padding: 10px 12px 10px 36px;
}
.target-search .ph {
  position: absolute;
  left: 12px; top: 50%;
  transform: translateY(-50%);
  color: var(--tool-ink-3);
}
.quickpick {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.quickpick button {
  appearance: none;
  background: var(--tool-panel);
  border: 1px solid var(--tool-line);
  border-radius: var(--radius-full);
  color: var(--tool-ink-2);
  font: 500 var(--text-xs)/1 var(--tool-mono);
  padding: 6px 11px;
  cursor: pointer;
}
.quickpick button:hover { border-color: var(--tool-accent); color: var(--tool-ink); }
.quickpick button[aria-pressed="true"] { border-color: var(--tool-accent); color: var(--tool-accent); }

.palette-backdrop {
  position: fixed; inset: 0;
  background: rgba(4, 6, 10, 0.6);
  display: none;
  z-index: 200;
}
.palette-backdrop.open { display: block; }
.palette {
  position: fixed;
  top: 18vh; left: 50%;
  transform: translateX(-50%);
  width: min(560px, calc(100vw - 32px));
  background: var(--tool-panel);
  border: 1px solid var(--tool-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  z-index: 201;
  overflow: hidden;
}
.palette input {
  width: 100%;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--tool-line);
  color: var(--tool-ink);
  font: 500 var(--text-md)/1 var(--tool-ui);
  padding: 14px 16px;
}
.palette input:focus { outline: none; }
.palette ul { list-style: none; margin: 0; padding: 6px; max-height: 40vh; overflow-y: auto; }
.palette li {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--tool-ink-2);
}
.palette li .mono { font-family: var(--tool-mono); font-size: var(--text-xs); color: var(--tool-ink-3); }
.palette li[aria-selected="true"], .palette li:hover { background: var(--tool-raised); color: var(--tool-ink); }

/* ---------- shortcut help ---------- */
.kbd-overlay {
  position: fixed; inset: 0;
  background: rgba(4,6,10,0.7);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 210;
}
.kbd-overlay.open { display: flex; }
.kbd-card {
  background: var(--tool-panel);
  border: 1px solid var(--tool-line);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  width: min(420px, calc(100vw - 32px));
}
.kbd-card h3 { font-family: var(--font-heading); margin: 0 0 var(--space-4); font-size: var(--text-lg); }
.kbd-card dl { display: grid; grid-template-columns: auto 1fr; gap: 8px 16px; margin: 0; }
.kbd-card dt kbd {
  font: 600 11px var(--tool-mono);
  background: var(--tool-raised);
  border: 1px solid var(--tool-line);
  border-radius: 4px;
  padding: 2px 6px;
}
.kbd-card dd { margin: 0; font-size: var(--text-sm); color: var(--tool-ink-2); }

/* ---------- night mode ---------- */
/* Red ramp: page-level custom-prop swap plus a filter on imagery. */
.tool-page.night {
  --tool-ink: #FF6B63;
  --tool-ink-2: #C9524C;
  --tool-ink-3: #8F3B37;
  --tool-accent: #FF6B63;
  --tool-accent-deep: #7A2622;
  --tool-good: #FF8A80;
  --tool-warn: #FF6B63;
  --tool-info: #FF8A80;
  --tool-line: #2a1512;
  --tool-line-soft: #200f0d;
  --tool-panel: #120a09;
  --tool-raised: #1a0e0c;
  --tool-bg: #0A0505;
}
.tool-page.night #aladin-target,
.tool-page.night .stage-placeholder,
.tool-page.night .pl-stage {
  filter: grayscale(1) sepia(1) hue-rotate(-45deg) saturate(4.2) brightness(0.72);
  transition: filter var(--night-ramp) var(--ease-in-out);
}
@media (prefers-reduced-motion: reduce) {
  .tool-page, .tool-page.night #aladin-target { transition: none; }
}

/* ---------- toast ---------- */
.tool-toast {
  position: fixed;
  bottom: 24px; left: 50%;
  transform: translate(-50%, 8px);
  background: var(--tool-raised);
  border: 1px solid var(--tool-line);
  color: var(--tool-ink);
  font: 500 var(--text-sm)/1 var(--tool-ui);
  padding: 10px 16px;
  border-radius: var(--radius-full);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal), transform var(--duration-normal);
  z-index: 300;
}
.tool-toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- copy-spec fallback box ---------- */
.copy-fallback {
  display: none;
  margin-top: var(--space-3);
}
.copy-fallback.visible { display: block; }
.copy-fallback textarea {
  width: 100%;
  min-height: 120px;
  background: var(--tool-raised);
  border: 1px solid var(--tool-line);
  border-radius: var(--radius-md);
  color: var(--tool-ink);
  font: 12px/1.5 var(--tool-mono);
  padding: var(--space-3);
}

/* ---------- index page ---------- */

.tools-index-intro {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--space-6) var(--space-8);
  color: var(--tool-ink-2);
  font-size: var(--text-md);
  line-height: var(--leading-relaxed);
}
.tools-index-intro a { color: var(--tool-accent); }

.tools-cards {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}
.tool-card {
  display: block;
  background: var(--tool-panel);
  border: 1px solid var(--tool-line);
  border-radius: var(--tool-radius);
  padding: var(--space-6);
  text-decoration: none;
  transition: border-color var(--duration-fast), transform var(--duration-fast);
}
.tool-card:hover { border-color: var(--tool-accent); transform: translateY(-2px); }
.tool-card .ph { font-size: 28px; color: var(--tool-accent); }
.tool-card h2 {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  color: var(--tool-ink);
  margin: var(--space-3) 0 var(--space-2);
}
.tool-card p { color: var(--tool-ink-2); font-size: var(--text-sm); line-height: var(--leading-normal); margin: 0; }
.tool-card .card-q {
  font: 500 var(--text-xs)/1.4 var(--tool-mono);
  color: var(--tool-ink-3);
  display: block;
  margin-top: var(--space-3);
}

.rig-manager {
  max-width: var(--wide-width);
  margin: var(--space-8) auto 0;
  padding: 0 var(--space-6);
}
.rig-panel {
  background: var(--tool-panel);
  border: 1px solid var(--tool-line);
  border-radius: var(--tool-radius);
  padding: var(--space-6);
}
.rig-panel .storage-note {
  font-size: var(--text-xs);
  color: var(--tool-ink-3);
  margin-top: var(--space-4);
}
.rig-list { list-style: none; margin: 0 0 var(--space-4); padding: 0; }
.rig-list li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border: 1px solid var(--tool-line);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-2);
}
.rig-list .rig-name { font-weight: 600; color: var(--tool-ink); }
.rig-list .rig-desc { flex: 1; font: 12px var(--tool-mono); color: var(--tool-ink-3); }
.rig-empty { color: var(--tool-ink-3); font-size: var(--text-sm); padding: var(--space-4) 0; }

/* ---------- mobile ---------- */

@media (max-width: 900px) {
  .tool-layout { grid-template-columns: 1fr; }
  .tools-cards { grid-template-columns: 1fr; }
  .tool-stage { min-height: 320px; aspect-ratio: 1 / 1; }
  /* the inspector flows in document order below the stage — no bottom sheet */
}