:root {
  --bg:        #0f1115;
  --panel:     #171a21;
  --panel-2:   #1d2129;
  --border:    #2a2f3a;
  --text:      #e6e8ec;
  --text-dim:  #9aa0aa;
  --accent:    #4f8cff;
  --accent-2:  #65d6ad;
  --warn:      #f0b541;
  --row-hover: #232834;
  --mono:      ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --sans:      -apple-system, BlinkMacSystemFont, "Inter", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.45;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

header.site-header {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 12px 24px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

header .brand {
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.3px;
  color: var(--text);
  text-decoration: none;
}
header a.brand:hover { color: var(--accent); }

header nav { display: flex; gap: 16px; }
header nav a {
  color: var(--text-dim);
  padding: 4px 8px;
  border-radius: 6px;
}
header nav a.active {
  color: var(--text);
  background: var(--panel-2);
}

main { padding: 12px 16px; max-width: 1500px; margin: 0 auto; }

/* ── Filters ───────────────────────────────────────────── */
.filters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  padding: 16px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 16px;
}

.filter-group { display: flex; flex-direction: column; gap: 4px; }
.filter-group label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-dim);
}
.filter-group input,
.filter-group select {
  box-sizing: border-box;   /* keep padding inside the width so min/max inputs don't overflow */
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 10px;
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 13px;
}
.filter-group input:focus,
.filter-group select:focus {
  outline: none;
  border-color: var(--accent);
}
.filter-row-inline { display: flex; gap: 6px; }
.filter-row-inline input { flex: 1; }

.filter-actions {
  display: flex;
  align-items: flex-end;
  gap: 8px;
}
button {
  background: var(--accent);
  color: white;
  border: 0;
  padding: 7px 14px;
  border-radius: 4px;
  font-size: 13px;
  cursor: pointer;
}
button.secondary { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); }
button:hover { filter: brightness(1.1); }

/* ── Status bar ────────────────────────────────────────── */
.statusbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 4px;
  font-size: 12px;
  color: var(--text-dim);
}
.statusbar .count { font-family: var(--mono); }

/* ── Table ─────────────────────────────────────────────── */
.table-wrap {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
table.data {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 12.5px;
}
table.data th, table.data td {
  padding: 8px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
table.data th {
  background: var(--panel-2);
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 11px;
  cursor: pointer;
  user-select: none;
  position: sticky;
  top: 0;
  z-index: 1;
}
table.data th .sort-marker { color: var(--accent); margin-left: 4px; }
table.data tbody tr { cursor: pointer; }
table.data tbody tr:hover { background: var(--row-hover); }
table.data td.num { text-align: right; }
table.data td.regime-amorphous      { color: #ff8a80; }
table.data td.regime-SRO            { color: #ffd54f; }
table.data td.regime-MRO            { color: #80cbc4; }
table.data td.regime-crystalline_30 { color: #82b1ff; }

table.data th.no-sort { cursor: default; }
table.data td.download-cell { text-align: center; padding: 4px 6px; width: 32px; }
table.data a.row-download {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 3px;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 14px;
  line-height: 1;
}
table.data a.row-download:hover {
  background: var(--accent);
  color: white;
  text-decoration: none;
}

/* ── Pagination ────────────────────────────────────────── */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 12px;
  font-family: var(--mono);
  font-size: 12px;
}
.pagination button {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 4px 10px;
}
.pagination button:disabled { opacity: 0.4; cursor: default; }
.pagination .page-info { color: var(--text-dim); padding: 0 8px; }

/* ── Loading / messages ────────────────────────────────── */
.message {
  padding: 24px;
  text-align: center;
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 13px;
}
.message.error { color: var(--warn); }

/* ── Caveat banner (e.g. MRO known-issue notice) ───────── */
.caveat {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin: 0 0 14px;
  padding: 11px 14px;
  background: rgba(240, 181, 65, 0.10);
  border: 1px solid rgba(240, 181, 65, 0.40);
  border-left: 3px solid var(--warn);
  border-radius: 6px;
  color: var(--text);
  font-size: 13px;
  line-height: 1.45;
}
.caveat .caveat-icon { color: var(--warn); font-size: 15px; flex: none; line-height: 1.4; }
.caveat strong { color: var(--warn); }
.caveat a { color: var(--warn); text-decoration: underline; }
.caveat.page { margin: 14px 0; }
/* MRO emphasis in the browse table + regime dl value */
td.regime-MRO { color: var(--warn); }
td.regime-MRO::after { content: " ⚠"; }
.mro-flag { color: var(--warn); font-weight: 600; }

/* ── Detail page ───────────────────────────────────────── */
.detail-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 12px;
}
@media (max-width: 1000px) { .detail-layout { grid-template-columns: 1fr; } }

.viewer-wrap {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  position: relative;    /* so .viewer-gate can absolutely fill it */
}
#viewer-frame {
  display: block;
  width: 100%;
  height: 360px;
  border: 0;
  background: #f7f8f5;   /* matches the atomode viewer background */
}
.viewer-3dmol {
  position: relative;   /* 3Dmol positions its canvas absolutely inside */
  width: 100%;
  height: 360px;
  background: #000;
}
/* Click gate overlays the iframe area only (not the controls strip
   below it), so the "Load 3D viewer" button sits inside the viewer. */
.viewer-gate {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 360px;         /* matches #viewer-frame height */
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f7f8f5;
  font-family: var(--mono);
  z-index: 2;
}
.viewer-gate-btn {
  padding: 10px 22px;
  font-size: 13px;
  font-family: var(--mono);
  background: #1f4e79;
  color: #fff;
  border: 0;
  border-radius: 6px;
  cursor: pointer;
}
.viewer-gate-btn:hover { background: #2a6299; }
.viewer-gate-msg {
  max-width: 480px;
  padding: 18px 24px;
  text-align: center;
  color: #333;
}
.viewer-gate-msg .viewer-gate-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
}
.viewer-gate-msg .viewer-gate-hint {
  font-size: 12px;
  color: #555;
  line-height: 1.5;
}

.viewer-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  background: var(--panel-2);
  border-top: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--text-dim);
}
.viewer-controls .ctrl-label {
  text-transform: uppercase;
  letter-spacing: 0.6px;
  font-size: 10.5px;
  color: var(--text-dim);
}
.viewer-controls .ctrl-divider {
  width: 1px;
  height: 14px;
  background: var(--border);
  margin: 0 4px;
}
.viewer-controls .seg-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* Slice controls live inline in .viewer-controls — the .slice-only
   items are hidden when the viewer is on the polyhedra iframe (which
   manages its own scene and can't be resliced from the parent). */
.viewer-controls.no-slice .slice-only { display: none; }

.slice-range {
  position: relative;
  flex: 1 1 110px;
  min-width: 90px;
  max-width: 240px;
  height: 20px;
}
/* Shared visible track drawn once as a pseudo-element behind both
   inputs.  Each range input has a transparent track so we don't stack
   two tracks (which was hiding the lo thumb behind the hi track). */
.slice-range::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 50%;
  height: 3px; margin-top: -1.5px;
  background: var(--border);
  border-radius: 2px;
}
.slice-range input[type="range"] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 20px;
  margin: 0;
  background: transparent;      /* transparent track ↑ the shared ::before shows */
  pointer-events: none;
  -webkit-appearance: none;
  appearance: none;
}
/* Transparent tracks so ::before is what's visible. */
.slice-range input[type="range"]::-webkit-slider-runnable-track {
  height: 3px; background: transparent; border: 0;
}
.slice-range input[type="range"]::-moz-range-track {
  height: 3px; background: transparent; border: 0;
}
/* Thumbs sit above the shared track, catch pointer events. */
.slice-range input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--accent); border: 2px solid var(--panel-2);
  margin-top: -5px;
  cursor: pointer;
  pointer-events: auto;
  position: relative; z-index: 2;
}
.slice-range input[type="range"]::-moz-range-thumb {
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--accent); border: 2px solid var(--panel-2);
  cursor: pointer;
  pointer-events: auto;
  position: relative; z-index: 2;
}
.slice-readout {
  min-width: 96px;
  flex: 0 0 auto;
  white-space: nowrap;
  text-align: right;
  color: var(--text);
  font-size: 11px;
  font-family: var(--mono);
}
.viewer-controls .seg-btn {
  padding: 3px 8px;
  font-size: 11px;
  font-family: var(--mono);
  background: var(--panel);
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
}
.viewer-controls .seg-btn:hover { color: var(--text); }
.viewer-controls .seg-btn.active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}
/* Axis currently clipping (may or may not be the edited axis) — green
   underline distinguishes "actively slicing" from the blue "editing" fill. */
.viewer-controls .seg-btn[data-slice-axis].clipped {
  box-shadow: inset 0 -3px 0 var(--accent-2);
}
.viewer-controls input[type=range] { flex: 1; accent-color: var(--accent); }
.viewer-controls .frame-label { min-width: 90px; color: var(--text-dim); }

.meta-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
}
.meta-panel h2 {
  margin: 0 0 4px;
  font-size: 16px;
  font-family: var(--mono);
}
.meta-panel .subtitle {
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 11px;
  margin-bottom: 10px;
}
.meta-panel dl {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 3px 10px;
  font-family: var(--mono);
  font-size: 12px;
  margin: 0 0 10px;
}
.meta-panel dt { color: var(--text-dim); }
.meta-panel dd { margin: 0; }
.meta-panel .badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}
.badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 11px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text-dim);
}
.badge.regime { color: var(--text); }
.download-row { display: flex; gap: 8px; flex-wrap: wrap; }

/* ── Plots (g(r) + ADF + g3) on the detail page ────────── */
.plots-host {
  margin-top: 10px;
  display: grid;
  gap: 8px;
}
.plots-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 8px;
}
.plot-pdf-cell     { grid-column: 1; grid-row: 1; }
.plot-adf-cell     { grid-column: 2; grid-row: 1; }
.plot-g3-cell      { grid-column: 1; grid-row: 2; }
.plot-regimes-cell { grid-column: 2; grid-row: 2; }
@media (max-width: 900px) {
  .plots-grid { grid-template-columns: 1fr; grid-template-rows: auto; }
  .plot-pdf-cell, .plot-adf-cell, .plot-g3-cell, .plot-regimes-cell {
    grid-column: 1; grid-row: auto;
  }
}
/* The inline regime cell uses the shared plot-row visual shell, so we
   don't want the standalone regimes-host section rendering a second
   time below the grid. */
#regimes-host { display: none; }
.plots-host .plot-row {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 4px;
}
.plots-host .plot { width: 100%; min-height: 200px; }
.plots-host .plot-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
  align-items: center;
  padding: 4px 10px 8px;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--text-dim);
}
.plots-host .plot-controls .ctrl-label {
  color: var(--text-dim);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-right: 2px;
}
.plots-host .plot-controls label {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  color: var(--text);
  cursor: pointer;
  white-space: nowrap;
}
.plots-host .plot-controls input[type="checkbox"] {
  margin: 0;
  width: auto;
  accent-color: var(--accent);
}
.plots-host .plot-controls input[type="number"] {
  width: 70px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 11.5px;
  margin-left: 4px;
}
.plots-host .plot-controls select {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 11.5px;
  margin-left: 4px;
}
.plots-host .plot-controls .ctrl-divider {
  width: 1px;
  height: 14px;
  background: var(--border);
  margin: 0 6px;
}
.plots-host .plot-controls .shell-controls {
  display: inline-flex;
  align-items: center;
  gap: 4px 8px;
  flex-wrap: wrap;
}
.plots-host .plot-controls .seg-btn {
  padding: 2px 8px;
  font-size: 10.5px;
  background: var(--panel);
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--mono);
}
.plots-host .plot-controls .seg-btn:hover { color: var(--text); }
.plots-host .plot-controls .shell-status {
  font-size: 10.5px;
  color: var(--text-dim);
  font-family: var(--mono);
  margin-left: 4px;
}
/* g(r) drag-to-set-shell affordance — apply to the whole plot since
   fixedrange:true may suppress Plotly's .nsewdrag layer */
#plot-pdf, #plot-pdf .nsewdrag { cursor: ew-resize !important; }
#plot-pdf .modebar { cursor: default !important; }
.plots-host .plots-empty {
  padding: 24px;
  text-align: center;
  color: var(--text-dim);
  background: var(--panel);
  border: 1px dashed var(--border);
  border-radius: 8px;
  font-family: var(--mono);
  font-size: 12px;
}
.plots-host .plots-empty code {
  background: var(--panel-2);
  padding: 2px 6px;
  border-radius: 3px;
}

/* ── Diffraction-pattern viewer ──────────────────────── */
.dps-host {
  margin-top: 10px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
}
.dps-host:empty { display: none; }
.dps-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 8px;
}
.dps-header .dps-meta {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
}
/* Fixed-width columns so neither the image-wrap nor the controls has
   dead space around it — image sits flush against the controls, no
   gap in the middle.  Both left-aligned; any leftover width is empty
   whitespace on the right (fine, this section doesn't need to fill). */
.dps-grid {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  flex-wrap: wrap;
}
.dps-controls {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 0 0 260px;
}
.dps-ctl-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
:is(.dps-thk-buttons,.dps-probe-buttons) {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
:is(.dps-thk-buttons,.dps-probe-buttons) .seg-btn {
  padding: 4px 10px;
  font-size: 11px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--mono);
  color: var(--text-dim);
}
:is(.dps-thk-buttons,.dps-probe-buttons) .seg-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}
:is(.dps-thk-buttons,.dps-probe-buttons) .seg-btn:hover { color: var(--text); }
.dps-probe-grid[data-square="true"] {
  display: grid;
  grid-template-columns: repeat(var(--grid-cols, 6), 1fr);
  gap: 2px;
  max-width: 260px;
  aspect-ratio: 1;
}
.dps-probe-cell {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 2px;
  cursor: pointer;
  padding: 0;
  min-width: 0;
  min-height: 0;
}
.dps-probe-cell:hover  { background: var(--row-hover); }
.dps-probe-cell.active {
  background: var(--accent);
  border-color: var(--accent);
}
.dps-probe-grid[data-square="false"] {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.dps-probe-chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}
/* Sized so wrap height ≈ controls-column height (thickness buttons +
   probe-grid stack, ~375 px including the "g₃ shell" label + gap).
   Keeps the DP square and the row visually balanced. */
.dps-image-wrap {
  background: #000;
  border-radius: 6px;
  padding: 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 0 0 auto;
  width: 348px;   /* 340 image + 2·4 px padding */
  max-width: 100%;
}
.dps-image {
  width: 340px;
  height: 340px;
  max-width: 100%;
  image-rendering: pixelated;
  background: #000;
  border-radius: 4px;
  display: block;
}
.dps-caption {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
  padding: 6px 0 2px;
}

/* Sim params — collapsed by default; lives in the right column of the
   DP grid and, when opened, fills that right region rather than pushing
   the panel bottom down. */
.dps-sim {
  flex: 1 1 320px;
  min-width: 260px;
  align-self: stretch;
  border-left: 1px dashed var(--border);
  padding-left: 20px;
}
.dps-sim > summary {
  cursor: pointer;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  user-select: none;
}
.dps-sim > summary:hover { color: var(--text); }
.dps-sim-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px 20px;
  margin-top: 10px;
}
.dps-sim-group { min-width: 0; }
.dps-sim-title {
  font-family: var(--mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-dim);
  margin-bottom: 4px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 2px;
}
.dps-sim-group dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 2px 10px;
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
}
.dps-sim-group dt { color: var(--text-dim); }
.dps-sim-group dd { margin: 0; color: var(--text); }
.dps-sim-hint {
  color: var(--text-dim);
  font-size: 10px;
  margin-left: 4px;
}

/* ── Regime navigator (E vs disorder regime) ───────────── */
.regimes-host {
  margin-top: 10px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
}
.regimes-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 8px;
}
.regimes-title .regimes-mp {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
}
.regimes-plot { width: 100%; min-height: 200px; }
.regimes-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}
.regime-chip {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--panel-2);
  font-family: var(--mono);
  font-size: 11.5px;
  text-decoration: none;
  cursor: pointer;
  min-width: 90px;
}
.regime-chip:hover {
  background: var(--row-hover);
  text-decoration: none;
}
.regime-chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: white !important;
}
.regime-chip.active .rname, .regime-chip.active .rval { color: white !important; }
.regime-chip .rname {
  font-size: 11px;
  letter-spacing: 0.3px;
}
.regime-chip .rval {
  font-size: 13px;
  color: var(--text);
}

/* ── Downloads page ────────────────────────────────────── */
.downloads-summary {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px 24px;
  margin-bottom: 16px;
}
.downloads-summary h1 { margin: 0 0 12px; font-size: 22px; }
.summary-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin: 12px 0 16px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-dim);
}
.summary-stats .stat strong {
  color: var(--accent-2);
  font-size: 15px;
  margin-right: 4px;
}
.summary-stats .error { color: var(--warn); }
.summary-note {
  color: var(--text-dim);
  font-size: 13px;
  margin: 0;
  line-height: 1.55;
}
.summary-note code,
.recipe code,
.format-list code {
  background: var(--panel-2);
  padding: 1px 5px;
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 12.5px;
}
.recipe {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px 24px;
  margin-bottom: 14px;
}
.recipe h2 { margin: 0 0 8px; font-size: 16px; font-family: var(--mono); }
.recipe p  { margin: 4px 0 10px; color: var(--text-dim); font-size: 13px; line-height: 1.55; }
.recipe pre.snippet {
  background: #0a0c10;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 12px 14px;
  overflow-x: auto;
  margin: 0;
}
.recipe pre.snippet code {
  background: transparent;
  padding: 0;
  font-family: var(--mono);
  font-size: 12.5px;
  color: #cfd6e0;
  line-height: 1.55;
  white-space: pre;
}
.recipe .snippet-note {
  margin-top: 8px;
  font-size: 12px;
  color: var(--text-dim);
}
.format-list {
  margin: 8px 0 0;
  padding-left: 22px;
  color: var(--text-dim);
  font-size: 13px;
  line-height: 1.7;
}

/* ── Placeholder page ──────────────────────────────────── */
.placeholder {
  max-width: 680px;
  margin: 60px auto;
  padding: 32px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.placeholder h1 { margin-top: 0; }
.placeholder code {
  background: var(--panel-2);
  padding: 2px 6px;
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 13px;
}

/* ── Mobile phones (≤640px) ──────────────────────────────
   Tablet stacking is already handled by the 900px/1000px queries above;
   this tightens things for small phone screens (conference QR → phone). */
@media (max-width: 640px) {
  main { padding: 10px 12px; }
  header.site-header { padding: 10px 14px; }
  .filters { padding: 12px; gap: 10px; }

  /* Browse table: hide the redundant ID column (= composition + mp-id +
     regime + seed shown in other columns; row click still works via data-id),
     let the rest scroll sideways, and tighten cells so more fits per screen. */
  table.data th:first-child,
  table.data td:first-child { display: none; }
  .table-wrap { overflow-x: auto; overflow-y: hidden; -webkit-overflow-scrolling: touch; }
  table.data { font-size: 11.5px; }
  table.data th, table.data td { padding: 6px 8px; white-space: nowrap; }

  /* Structure detail: the viewer control strip wraps instead of overflowing;
     the slice sliders take their own full row; slightly shorter 3D viewport. */
  .viewer-controls { flex-wrap: wrap; row-gap: 6px; }
  .slice-range { flex: 1 1 100%; max-width: none; }
  #viewer-frame, .viewer-3dmol { height: 300px; }
}