/* Vasslab v0.4 public stylesheet bundle — 0.4.0-alpha.8 */

/* Vasslab shared page shell v0.4 */

:root {
  --vasslab-bg: #eef3f6;
  --vasslab-surface: #ffffff;
  --vasslab-surface-soft: #f6f8fa;
  --vasslab-ink: #17232c;
  --vasslab-muted: #64747e;
  --vasslab-line: #d6dde2;
  --vasslab-line-strong: #bccbd3;
  --vasslab-blue: #176f9e;
  --vasslab-blue-dark: #105878;
  --vasslab-blue-soft: #eaf4f8;
  --vasslab-water-line: #2f83b6;
  --vasslab-water-fill: #cfe5f2;
  --vasslab-egl: #b45309;
  --vasslab-critical-depth: #7c5aa6;
  --vasslab-normal-depth: #00897b;
  --vasslab-conjugate-depth: #c2416c;
  --vasslab-drawing-contrast-light: #ffffff;
  --vasslab-drawing-contrast-dark: #17232c;
  --vasslab-handle: #e8742b; /* compatibility alias: geometry handle */
  --vasslab-handle-geometry: #e8742b;
  --vasslab-handle-water: #2f83b6;
  --vasslab-handle-outline: #ffffff;
  --vasslab-valid: #257a58;
  --vasslab-warning: #9a3412;
  --vasslab-warning-bg: #fff7ed;

  --vasslab-page-max-width: 1220px;
  --vasslab-page-gutter: 20px;
  --vasslab-gap: 12px;
  --vasslab-gap-large: 14px;
  --vasslab-card-radius: 16px;
  --vasslab-radius-small: 12px;
  --vasslab-panel-padding: 16px;
  --vasslab-panel-padding-large: 16px;

  --vasslab-font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --vasslab-text-xs: 12px;
  --vasslab-text-sm: 13px;
  --vasslab-text-ui: 14px;
  --vasslab-text-body: 15px;
  --vasslab-text-lead: 16px;
  --vasslab-text-card-title: 17px;
  --vasslab-text-state-primary: 20px;
  --vasslab-line-height-tight: 1.25;
  --vasslab-line-height-body: 1.55;
  --vasslab-control-height: 38px;
  --vasslab-input-height: 40px;
  --vasslab-touch-target: 44px;

  --vasslab-surface-controls: #ffffff;
  --vasslab-surface-state: #f6f8fa;
  --vasslab-surface-notice: #f1f7fa;
  --vasslab-surface-about: #ffffff;
  --vasslab-surface-science: #fafcfd;
  --vasslab-shadow: 0 10px 30px rgba(24, 47, 62, 0.08);
  --vasslab-shadow-small: 0 5px 18px rgba(24, 47, 62, 0.07);
}

html {
  min-height: 100%;
  scroll-padding-top: calc(var(--vasslab-menu-height, 58px) + 16px);
}

body.vasslab-page-root {
  margin: 0;
  min-width: 300px;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--vasslab-bg);
  color: var(--vasslab-ink);
  font-family: var(--vasslab-font-family);
  font-size: var(--vasslab-text-body);
  line-height: var(--vasslab-line-height-body);
}



/* Page-end contract: short pages keep the footer at the bottom of the viewport;
   long pages flow normally. This is a sticky-footer layout, not a fixed footer. */
body.vasslab-page-root > main {
  flex: 1 0 auto;
}

body.vasslab-page-root > vasslab-footer {
  flex: 0 0 auto;
}

body.vasslab-page-root[data-vasslab-theme="dark"] {
  --vasslab-bg: #0e1820;
  --vasslab-surface: #16242e;
  --vasslab-surface-soft: #111e27;
  --vasslab-ink: #edf4f7;
  --vasslab-muted: #b8c7ce;
  --vasslab-line: #344954;
  --vasslab-line-strong: #526a77;
  --vasslab-blue: #71bce4;
  --vasslab-blue-dark: #9bd2ef;
  --vasslab-blue-soft: #173748;
  --vasslab-shadow: 0 12px 34px rgba(0, 0, 0, 0.26);
  --vasslab-shadow-small: 0 6px 20px rgba(0, 0, 0, 0.22);
  --vasslab-surface-controls: #16242e;
  --vasslab-surface-state: #111e27;
  --vasslab-surface-notice: #17313e;
  --vasslab-surface-about: #16242e;
  --vasslab-surface-science: #13212a;
}

body.vasslab-page-root *,
body.vasslab-page-root *::before,
body.vasslab-page-root *::after {
  box-sizing: border-box;
}

body.vasslab-page-root img,
body.vasslab-page-root canvas,
body.vasslab-page-root svg {
  max-width: 100%;
}

body.vasslab-page-root a:not(.vasslab-button) { color: inherit; }

body.vasslab-page-root :focus-visible {
  outline: 3px solid color-mix(in srgb, var(--vasslab-blue) 28%, transparent);
  outline-offset: 3px;
}

.vasslab-page {
  width: min(
    calc(100% - 2 * var(--vasslab-page-gutter)),
    var(--vasslab-page-max-width)
  );
  margin-inline: auto;
}

/* Deprecated in v0.4: all laboratories use the standard 1220 px page width.
   Kept as a no-op during migration so old markup does not break. */
.vasslab-page--wide {
  --vasslab-page-max-width: 1220px;
}

.vasslab-lab-intro {
  margin-block: clamp(16px, 3vw, 26px) 16px;
}

.vasslab-lab-intro h1 {
  max-width: 980px;
  margin: 0;
  color: var(--vasslab-ink);
  font-size: clamp(1.65rem, 3.2vw, 2.5rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.vasslab-lab-intro p {
  width: 100%;
  max-width: none;
  margin: 8px 0 0;
  color: var(--vasslab-muted);
  font-size: var(--vasslab-text-lead);
  line-height: var(--vasslab-line-height-body);
}

.vasslab-workspace {
  display: grid;
  gap: var(--vasslab-gap);
  align-items: start;
}

.vasslab-workspace--sidebar {
  grid-template-columns: minmax(0, 1fr) minmax(350px, 370px);
}

.vasslab-workspace--dashboard {
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.75fr);
}

.vasslab-workspace--below { grid-template-columns: minmax(0, 1fr); }
.vasslab-sidebar { display: grid; gap: var(--vasslab-gap); align-content: start; }
.vasslab-stack { display: grid; gap: var(--vasslab-gap); }
.vasslab-stack--small { gap: 9px; }

.vasslab-model-shell,
.vasslab-card {
  min-width: 0;
  border: 1px solid var(--vasslab-line);
  border-radius: var(--vasslab-card-radius);
  background: var(--vasslab-surface);
  box-shadow: var(--vasslab-shadow-small);
}

.vasslab-model-shell {
  position: relative;
  overflow: hidden;
}

.vasslab-model-shell--padded { padding: var(--vasslab-panel-padding); }
.vasslab-model-shell--flat { box-shadow: none; }
.vasslab-model-shell--overflow-visible { overflow: visible; }

.vasslab-card {
  padding: var(--vasslab-panel-padding-large);
  font-size: var(--vasslab-text-ui);
}

/* Dense scientific subcards (for example a selected relation or compact result). */
.vasslab-card--compact {
  padding: 12px 14px;
  border-radius: var(--vasslab-radius-small);
}
.vasslab-card--compact .vasslab-equation { margin-block: 6px; }

.vasslab-card--controls { background: var(--vasslab-surface-controls); }

/* Dynamic state/notice cards may opt into a model-specific stable minimum
   height without inventing a local class. */
.vasslab-card--stable {
  min-height: var(--vasslab-card-stable-min-height, auto);
}

.vasslab-card--notice {
  border-color: color-mix(in srgb, var(--vasslab-blue) 30%, var(--vasslab-line));
  background: var(--vasslab-surface-notice);
}

.vasslab-card--state,
.vasslab-card--result { background: var(--vasslab-surface-state); }

.vasslab-card--warning {
  border-color: color-mix(in srgb, var(--vasslab-warning) 30%, var(--vasslab-line));
  background: var(--vasslab-warning-bg);
  color: var(--vasslab-warning);
}

.vasslab-card--about {
  width: 100%;
  max-width: none;
  margin-top: var(--vasslab-gap-large);
  margin-inline: 0;
  background: var(--vasslab-surface-about);
  font-size: var(--vasslab-text-body);
}

.vasslab-card--science {
  width: 100%;
  max-width: none;
  margin-top: var(--vasslab-gap);
  padding: 0;
  overflow: clip;
  background: var(--vasslab-surface-science);
  font-size: var(--vasslab-text-body);
}

.vasslab-card--science > summary {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px var(--vasslab-panel-padding-large);
  color: var(--vasslab-ink);
  cursor: pointer;
  font-size: var(--vasslab-text-card-title);
  font-weight: 750;
  letter-spacing: -0.025em;
  list-style: none;
}

.vasslab-card--science > summary::-webkit-details-marker { display: none; }
.vasslab-card--science > summary::after {
  content: "";
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  border-right: 1.8px solid currentColor;
  border-bottom: 1.8px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  transition: transform 140ms ease;
}
.vasslab-card--science[open] > summary::after { transform: rotate(225deg) translate(-1px, -1px); }
.vasslab-science-body {
  padding: 0 var(--vasslab-panel-padding-large) var(--vasslab-panel-padding-large);
  border-top: 1px solid var(--vasslab-line);
  padding-top: 12px;
}
.vasslab-science-body > :first-child { margin-top: 0; }
.vasslab-science-body > :last-child { margin-bottom: 0; }
.vasslab-science-body p + p { margin-top: 10px; }

.vasslab-card h2,
.vasslab-card h3,
.vasslab-card-title {
  margin: 0;
  color: var(--vasslab-ink);
  letter-spacing: -0.025em;
}

.vasslab-card h2,
.vasslab-card-title { font-size: var(--vasslab-text-card-title); }
.vasslab-card h3 { font-size: var(--vasslab-text-ui); }

.vasslab-card p { margin: 0; color: var(--vasslab-muted); line-height: var(--vasslab-line-height-body); }
.vasslab-card p + p { margin-top: 12px; }
.vasslab-card h2 + p,
.vasslab-card h3 + p,
.vasslab-card-title + p { margin-top: 8px; }

.vasslab-card-lead {
  color: var(--vasslab-ink) !important;
  font-size: var(--vasslab-text-ui);
  font-weight: 700;
}

/* Shared internal hierarchy for Current state / Current result. */
.vasslab-card h2 + .vasslab-card-kicker,
.vasslab-card-title + .vasslab-card-kicker { margin-top: 9px !important; }

.vasslab-card-kicker {
  margin: 0 !important;
  color: var(--vasslab-muted) !important;
  font-size: var(--vasslab-text-xs) !important;
  font-weight: 800;
  letter-spacing: 0.055em;
  line-height: var(--vasslab-line-height-tight) !important;
  text-transform: uppercase;
}

.vasslab-card-primary {
  margin: 3px 0 0 !important;
  color: var(--vasslab-ink) !important;
  font-size: var(--vasslab-text-state-primary) !important;
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.18 !important;
}

.vasslab-card-support {
  margin: 6px 0 0 !important;
  color: var(--vasslab-muted) !important;
  font-size: var(--vasslab-text-ui) !important;
  line-height: 1.45 !important;
}

.vasslab-card ul,
.vasslab-card ol {
  margin: 10px 0 0;
  padding-left: 1.2rem;
  color: var(--vasslab-muted);
}

.vasslab-card li + li { margin-top: 7px; }


.vasslab-card--about a:not(.vasslab-button),
.vasslab-science-body a:not(.vasslab-button) {
  color: var(--vasslab-blue-dark);
  text-decoration-thickness: 1px;
  text-decoration-color: color-mix(in srgb, currentColor 45%, transparent);
  text-underline-offset: 2px;
}

.vasslab-card--about a:not(.vasslab-button):hover,
.vasslab-science-body a:not(.vasslab-button):hover {
  text-decoration-color: currentColor;
}

.vasslab-about-columns {
  columns: 2 34ch;
  column-gap: 28px;
}
.vasslab-about-columns > * { break-inside: avoid; }

.vasslab-info-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.75fr) minmax(0, 1.75fr);
  gap: var(--vasslab-gap);
  margin-top: var(--vasslab-gap-large);
}

.vasslab-info-grid--equal { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.vasslab-section { margin-top: var(--vasslab-gap-large); }

.vasslab-section-heading {
  margin: 0 0 10px;
  font-size: var(--vasslab-text-card-title);
  letter-spacing: -0.025em;
}

.vasslab-equation {
  margin-block: 9px;
  overflow-x: auto;
  overflow-y: hidden;
  text-align: center;
  -webkit-overflow-scrolling: touch;
}

.vasslab-equation--compact { margin-block: 4px; }
.vasslab-equation mjx-container[display="true"] { margin-block: 0.2em !important; }
.vasslab-card--compact mjx-container[display="true"],
.vasslab-science-body mjx-container[display="true"] { margin-block: 0.2em !important; }
.vasslab-equation--left { text-align: left; }

.vasslab-canvas-wrap {
  position: relative;
  min-width: 0;
  overflow: hidden;
  touch-action: auto;
}

.vasslab-canvas-wrap canvas {
  display: block;
  width: 100%;
  height: auto;
}

/* VasslabCanvas owns the CSS height for canvases registered as responsive. */
.vasslab-canvas-wrap canvas[data-vasslab-responsive-canvas="true"] {
  width: 100%;
  max-width: none;
}

.vasslab-scroll-x {
  min-width: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.vasslab-details {
  border-top: 1px solid var(--vasslab-line);
  margin-top: 14px;
  padding-top: 10px;
}

.vasslab-details summary {
  cursor: pointer;
  color: var(--vasslab-muted);
  font-size: var(--vasslab-text-ui);
  font-weight: 760;
}

.vasslab-details[open] summary { margin-bottom: 10px; }

.vasslab-sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

vasslab-menu:not(:defined) {
  display: block;
  min-height: 58px;
  border-bottom: 1px solid rgba(132, 156, 170, 0.28);
  background: rgba(238, 243, 246, 0.96);
}

vasslab-footer:not(:defined) { display: block; min-height: 82px; }

@media (max-width: 1000px) {
  .vasslab-workspace--sidebar,
  .vasslab-workspace--dashboard { grid-template-columns: 1fr; }

.vasslab-info-grid { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  :root { --vasslab-page-gutter: 10px; }
  .vasslab-lab-intro { margin-block: 15px 12px; padding-inline: 2px; }
  .vasslab-card { padding: 14px; }
  .vasslab-card--compact { padding: 11px 12px; }
  .vasslab-card--science { padding: 0; }
  .vasslab-card--science > summary { padding-inline: 14px; }
  .vasslab-science-body { padding-inline: 14px; padding-bottom: 14px; }
  .vasslab-info-grid--equal { grid-template-columns: 1fr; }
  .vasslab-model--edge-mobile {
    margin-inline: calc(-1 * var(--vasslab-page-gutter));
    border-right: 0;
    border-left: 0;
    border-radius: 0;
  }
}

@media (max-width: 440px) {
  .vasslab-card { padding: 14px; }
  .vasslab-card--compact { padding: 11px 12px; }
  .vasslab-card--science { padding: 0; }
  .vasslab-card--science > summary { padding-inline: 14px; }
  .vasslab-science-body { padding-inline: 14px; padding-bottom: 14px; }
}

@media (prefers-color-scheme: dark) {
  body.vasslab-page-root[data-vasslab-theme="auto"] {
    --vasslab-bg: #0e1820;
    --vasslab-surface: #16242e;
    --vasslab-surface-soft: #111e27;
    --vasslab-ink: #edf4f7;
    --vasslab-muted: #b8c7ce;
    --vasslab-line: #344954;
    --vasslab-line-strong: #526a77;
    --vasslab-blue: #71bce4;
    --vasslab-blue-dark: #9bd2ef;
    --vasslab-blue-soft: #173748;
    --vasslab-shadow: 0 12px 34px rgba(0, 0, 0, 0.26);
    --vasslab-shadow-small: 0 6px 20px rgba(0, 0, 0, 0.22);
    --vasslab-surface-controls: #16242e;
    --vasslab-surface-state: #111e27;
    --vasslab-surface-notice: #17313e;
    --vasslab-surface-about: #16242e;
    --vasslab-surface-science: #13212a;
  }
}

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

/* Vasslab shared controls v0.4 */

.vasslab-toolbar,
.vasslab-control-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
}

.vasslab-toolbar { justify-content: space-between; }
.vasslab-control-row--spread { justify-content: space-between; }
.vasslab-control-row--end { justify-content: flex-end; }

.vasslab-button,
.vasslab-icon-button,
.vasslab-preset,
.vasslab-segmented button {
  min-height: var(--vasslab-control-height);
  border: 1px solid var(--vasslab-line-strong);
  border-radius: 10px;
  background: var(--vasslab-surface);
  color: var(--vasslab-ink);
  cursor: pointer;
  font: inherit;
  font-size: var(--vasslab-text-sm);
  font-weight: 760;
  line-height: 1.2;
  transition: border-color 140ms ease, background 140ms ease, color 140ms ease, transform 140ms ease;
}

.vasslab-button,
.vasslab-preset { padding: 8px 13px; }

.vasslab-icon-button {
  width: 40px;
  padding: 0;
  display: inline-grid;
  place-items: center;
}

.vasslab-button:hover,
.vasslab-icon-button:hover,
.vasslab-preset:hover,
.vasslab-segmented button:hover {
  border-color: color-mix(in srgb, var(--vasslab-blue) 55%, var(--vasslab-line-strong));
  background: color-mix(in srgb, var(--vasslab-blue) 4%, var(--vasslab-surface));
}

.vasslab-button:active,
.vasslab-icon-button:active,
.vasslab-preset:active { transform: translateY(1px); }

.vasslab-button--primary {
  border-color: var(--vasslab-ink);
  background: var(--vasslab-ink);
  color: var(--vasslab-surface);
}

.vasslab-button--primary:hover {
  border-color: var(--vasslab-blue-dark);
  background: var(--vasslab-blue-dark);
  color: #fff;
}

.vasslab-button[disabled],
.vasslab-icon-button[disabled],
.vasslab-preset[disabled],
.vasslab-segmented button[disabled] {
  opacity: 0.48;
  cursor: not-allowed;
  transform: none;
}

.vasslab-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.vasslab-preset[aria-pressed="true"],
.vasslab-preset.is-active {
  border-color: var(--vasslab-ink);
  background: var(--vasslab-ink);
  color: var(--vasslab-surface);
}

.vasslab-segmented {
  display: inline-flex;
  max-width: 100%;
  padding: 3px;
  border: 1px solid var(--vasslab-line);
  border-radius: 12px;
  background: var(--vasslab-surface-soft);
}

.vasslab-segmented button {
  min-height: 36px;
  padding: 7px 11px;
  border-color: transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--vasslab-muted);
}

.vasslab-segmented button[aria-pressed="true"],
.vasslab-segmented button[aria-selected="true"],
.vasslab-segmented button.is-active {
  border-color: color-mix(in srgb, var(--vasslab-blue) 35%, var(--vasslab-line));
  background: var(--vasslab-blue-soft);
  color: var(--vasslab-blue-dark);
  box-shadow: 0 1px 4px rgba(24, 47, 62, 0.1);
}

.vasslab-field {
  display: grid;
  gap: 5px;
  min-width: 0;
}

.vasslab-field label,
.vasslab-label {
  color: var(--vasslab-muted);
  font-size: var(--vasslab-text-sm);
  font-weight: 760;
}

.vasslab-field input,
.vasslab-field select,
.vasslab-field textarea,
.vasslab-input {
  width: 100%;
  min-height: var(--vasslab-input-height);
  padding: 8px 10px;
  border: 1px solid var(--vasslab-line-strong);
  border-radius: 9px;
  background: var(--vasslab-surface);
  color: var(--vasslab-ink);
  font: inherit;
}

/* Range controls should not inherit text-field box dimensions. */
.vasslab-field:has(> input[type="range"]) {
  gap: 2px;
}

.vasslab-field:has(> input[type="range"]) > label {
  margin-bottom: 0;
  line-height: 1.25;
}

.vasslab-field > input[type="range"] {
  min-height: 24px;
  height: 24px;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  accent-color: var(--vasslab-blue);
}

.vasslab-check {
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--vasslab-ink);
  font-size: var(--vasslab-text-ui);
  font-weight: 680;
  cursor: pointer;
}

.vasslab-check input { width: 16px; height: 16px; accent-color: var(--vasslab-blue); }

.vasslab-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(115px, 1fr));
  gap: 9px;
}

.vasslab-metric {
  min-width: 0;
  padding: 10px 11px;
  border: 1px solid var(--vasslab-line);
  border-radius: var(--vasslab-radius-small);
  background: var(--vasslab-surface-soft);
}

.vasslab-metric-label {
  display: block;
  color: var(--vasslab-muted);
  font-size: var(--vasslab-text-xs);
  font-weight: 720;
}

.vasslab-metric-value {
  display: block;
  margin-top: 3px;
  overflow: hidden;
  color: var(--vasslab-ink);
  font-size: var(--vasslab-text-lead);
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.vasslab-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 30px;
  padding: 4px 9px;
  border: 1px solid var(--vasslab-line);
  border-radius: 999px;
  background: var(--vasslab-surface-soft);
  color: var(--vasslab-muted);
  font-size: var(--vasslab-text-xs);
  font-weight: 800;
}

.vasslab-status::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}

.vasslab-status--valid { color: var(--vasslab-valid); }
.vasslab-status--warning { color: var(--vasslab-warning); }
.vasslab-status--active { color: var(--vasslab-blue); }

.vasslab-timeline {
  display: grid;
  grid-template-columns: auto minmax(100px, 1fr) auto;
  gap: 10px;
  align-items: center;
}

.vasslab-timeline input[type="range"] { width: 100%; accent-color: var(--vasslab-blue); }
.vasslab-time-readout { min-width: 5.5ch; text-align: right; font-variant-numeric: tabular-nums; }

.vasslab-equation-control {
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: inherit;
  cursor: pointer;
  font: inherit;
}

.vasslab-equation-control[aria-pressed="true"] {
  background: var(--vasslab-blue-soft);
  color: var(--vasslab-blue-dark);
}

.vasslab-handle-target {
  position: absolute;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  transform: translate(-50%, -50%);
  cursor: grab;
  touch-action: none;
  -webkit-tap-highlight-color: transparent;
}

.vasslab-handle-target[data-axis="x"] { cursor: ew-resize; }
.vasslab-handle-target[data-axis="y"] { cursor: ns-resize; }
.vasslab-handle-target.is-vasslab-dragging:not([data-axis="x"]):not([data-axis="y"]) { cursor: grabbing; }

.vasslab-handle-target:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--vasslab-blue) 30%, transparent);
  outline-offset: -3px;
}

@media (any-pointer: coarse) {
  .vasslab-handle-target { width: var(--vasslab-touch-target); height: var(--vasslab-touch-target); }
}

@media (max-width: 680px) {
  .vasslab-button,
  .vasslab-icon-button,
  .vasslab-preset,
  .vasslab-segmented button,
  .vasslab-field input,
  .vasslab-field select,
  .vasslab-field textarea,
  .vasslab-input,
  .vasslab-check { min-height: var(--vasslab-touch-target); }
  .vasslab-check input { width: 18px; height: 18px; }

  .vasslab-field > input[type="range"] {
    min-height: var(--vasslab-touch-target);
    height: var(--vasslab-touch-target);
  }

  .vasslab-icon-button { width: var(--vasslab-touch-target); }

  .vasslab-presets--scroll-mobile {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
    scroll-snap-type: x proximity;
    -webkit-overflow-scrolling: touch;
  }

  .vasslab-presets--scroll-mobile .vasslab-preset {
    flex: 0 0 auto;
    scroll-snap-align: start;
  }

  .vasslab-timeline { grid-template-columns: auto minmax(80px, 1fr); }
  .vasslab-time-readout { grid-column: 1 / -1; justify-self: end; }
}

@media (prefers-reduced-motion: reduce) {
  .vasslab-button,
  .vasslab-icon-button,
  .vasslab-preset,
  .vasslab-segmented button { transition: none; }
}

/* Compact fixed-width animation toggle. The text may change between Play/Start
   and Pause without moving neighbouring controls. */
.vasslab-button--play-toggle {
  width: var(--vasslab-play-toggle-width, 88px);
  min-width: var(--vasslab-play-toggle-width, 88px);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  text-align: center;
}

/* Small HTML controls that live over a scientific canvas. The control itself
   keeps normal browser touch behaviour; only registered drag targets use
   touch-action:none. */
.vasslab-canvas-toolbar {
  --vasslab-canvas-toolbar-inset: 10px;
  position: absolute;
  z-index: 6;
  top: var(--vasslab-canvas-toolbar-inset);
  right: var(--vasslab-canvas-toolbar-inset);
  max-width: calc(100% - 2 * var(--vasslab-canvas-toolbar-inset));
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  padding: 4px 7px;
  border: 1px solid color-mix(in srgb, var(--vasslab-line) 88%, transparent);
  border-radius: 10px;
  background: color-mix(in srgb, var(--vasslab-surface) 94%, transparent);
  box-shadow: 0 2px 9px rgba(24, 47, 62, 0.09);
  color: var(--vasslab-ink);
  touch-action: auto;
  -webkit-tap-highlight-color: transparent;
}

.vasslab-canvas-toolbar--top-left { right: auto; left: var(--vasslab-canvas-toolbar-inset); }
.vasslab-canvas-toolbar--bottom-right { top: auto; bottom: var(--vasslab-canvas-toolbar-inset); }
.vasslab-canvas-toolbar--bottom-left {
  top: auto;
  right: auto;
  bottom: var(--vasslab-canvas-toolbar-inset);
  left: var(--vasslab-canvas-toolbar-inset);
}

.vasslab-canvas-toolbar .vasslab-check {
  min-height: 30px;
  font-size: var(--vasslab-text-sm);
  white-space: nowrap;
}

.vasslab-canvas-toolbar .vasslab-button,
.vasslab-canvas-toolbar .vasslab-icon-button,
.vasslab-canvas-toolbar .vasslab-segmented button {
  min-height: 32px;
}

/* Full-height/full-width transparent drag strip for a visible guide line or
   well line drawn in the canvas. */
.vasslab-guide-target {
  position: absolute;
  z-index: 5;
  padding: 0;
  border: 0;
  background: transparent;
  user-select: none;
  touch-action: none;
  -webkit-tap-highlight-color: transparent;
}

.vasslab-guide-target[data-axis="x"] {
  top: 0;
  bottom: 0;
  width: 40px;
  transform: translateX(-50%);
  cursor: ew-resize;
}

.vasslab-guide-target[data-axis="y"] {
  left: 0;
  right: 0;
  height: 40px;
  transform: translateY(-50%);
  cursor: ns-resize;
}

.vasslab-guide-target:focus-visible {
  outline: none;
  background: color-mix(in srgb, var(--vasslab-blue) 9%, transparent);
}

/* Native range variant where the current thumb must be grabbed. Keyboard
   behaviour remains native. VasslabControls.rangeDragOnly() provides the
   pointer-side suppression of track clicks. */
.vasslab-range--drag-only::-webkit-slider-thumb { cursor: grab; }
.vasslab-range--drag-only[data-vasslab-range-dragging="true"]::-webkit-slider-thumb { cursor: grabbing; }
.vasslab-range--drag-only::-moz-range-thumb { cursor: grab; }
.vasslab-range--drag-only[data-vasslab-range-dragging="true"]::-moz-range-thumb { cursor: grabbing; }

@media (any-pointer: coarse) {
  .vasslab-guide-target[data-axis="x"] { width: var(--vasslab-touch-target); }
  .vasslab-guide-target[data-axis="y"] { height: var(--vasslab-touch-target); }
}

@media (max-width: 680px) {
  .vasslab-canvas-toolbar { --vasslab-canvas-toolbar-inset: 8px; padding: 3px 5px; }
  .vasslab-canvas-toolbar .vasslab-check,
  .vasslab-canvas-toolbar .vasslab-button,
  .vasslab-canvas-toolbar .vasslab-icon-button,
  .vasslab-canvas-toolbar .vasslab-segmented button {
    min-height: var(--vasslab-touch-target);
  }
}

/* Opt-in exact-value editor for graphical drag targets. The editor is opened
   by VasslabDrag on double-click / double-tap, or Enter on a focused target. */
:root {
  --vasslab-z-exact-value: 800;
}

.vasslab-exact-value {
  position: fixed;
  z-index: var(--vasslab-z-exact-value);
  width: min(252px, calc(100vw - 16px));
  padding: 10px;
  border: 1px solid var(--vasslab-line-strong);
  border-radius: 12px;
  background: var(--vasslab-surface);
  color: var(--vasslab-ink);
  box-shadow: 0 14px 36px rgba(24, 47, 62, 0.18);
  opacity: 0;
  transform: translateY(2px);
  transition: opacity 100ms ease, transform 100ms ease;
}

.vasslab-exact-value[hidden] { display: none !important; }
.vasslab-exact-value.is-visible { opacity: 1; transform: translateY(0); }

.vasslab-exact-value__form {
  display: grid;
  gap: 7px;
  margin: 0;
}

.vasslab-exact-value__title {
  font-size: var(--vasslab-text-ui);
  font-weight: 700;
  line-height: 1.25;
}

.vasslab-exact-value__label {
  display: grid;
  gap: 4px;
  margin: 0;
  color: var(--vasslab-muted);
  font-size: var(--vasslab-text-sm);
  font-weight: 600;
}

.vasslab-exact-value__field-row {
  display: flex;
  align-items: center;
  gap: 7px;
}

.vasslab-exact-value__input {
  width: 100%;
  min-width: 0;
  min-height: 38px;
  padding: 6px 9px;
  border: 1px solid var(--vasslab-line-strong);
  border-radius: 9px;
  background: var(--vasslab-surface);
  color: var(--vasslab-ink);
  font: inherit;
  font-variant-numeric: tabular-nums;
  outline: none;
}

.vasslab-exact-value__input:focus {
  border-color: var(--vasslab-blue);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--vasslab-blue) 18%, transparent);
}

.vasslab-exact-value__input[aria-invalid="true"] {
  border-color: var(--vasslab-warning);
}

.vasslab-exact-value__unit {
  flex: 0 0 auto;
  color: var(--vasslab-muted);
  font-size: var(--vasslab-text-sm);
  font-weight: 600;
  white-space: nowrap;
}

.vasslab-exact-value__error {
  min-height: 0;
  color: var(--vasslab-warning);
  font-size: var(--vasslab-text-sm);
  line-height: 1.3;
}

.vasslab-exact-value__error:empty { display: none; }

.vasslab-exact-value__actions {
  display: flex;
  justify-content: flex-end;
  gap: 6px;
}

.vasslab-exact-value__actions .vasslab-button {
  min-height: 34px;
  padding-block: 5px;
}

@media (any-pointer: coarse) {
  .vasslab-exact-value__input,
  .vasslab-exact-value__actions .vasslab-button {
    min-height: var(--vasslab-touch-target);
  }
}

@media (prefers-reduced-motion: reduce) {
  .vasslab-exact-value { transition: none; }
}

/* Vasslab internal laboratory link previews v0.4 */

:root {
  --vasslab-z-link-preview: 700;
}

.vasslab-link-preview {
  position: fixed;
  z-index: var(--vasslab-z-link-preview);
  width: min(336px, calc(100vw - 20px));
  overflow: hidden;
  border: 1px solid var(--vasslab-line);
  border-radius: 12px;
  background: var(--vasslab-surface);
  color: var(--vasslab-ink);
  box-shadow: 0 14px 38px rgba(24, 47, 62, 0.18);
  pointer-events: none;
  opacity: 0;
  transform: translateY(3px);
  transition: opacity 120ms ease, transform 120ms ease;
}

.vasslab-link-preview[hidden] { display: none !important; }

.vasslab-link-preview.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.vasslab-link-preview__media {
  height: 126px;
  overflow: hidden;
  border-bottom: 1px solid var(--vasslab-line);
  background: var(--vasslab-surface-soft);
}

.vasslab-link-preview__media[hidden] { display: none; }

.vasslab-link-preview__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: contain;
  object-position: center;
}

.vasslab-link-preview__body {
  padding: 11px 13px 12px;
}

.vasslab-link-preview__title {
  margin: 0;
  font-size: var(--vasslab-text-ui);
  font-weight: 720;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.vasslab-link-preview__question {
  margin: 5px 0 0;
  color: var(--vasslab-muted);
  font-size: var(--vasslab-text-sm);
  line-height: 1.42;
}

body.vasslab-page-root[data-vasslab-theme="dark"] .vasslab-link-preview {
  box-shadow: 0 16px 42px rgba(0, 0, 0, 0.38);
}

@media (prefers-reduced-motion: reduce) {
  .vasslab-link-preview { transition: none; }
}

/* Touch links remain ordinary one-tap links. The preview is never shown by the
   runtime on non-hover pointers; this rule is a defensive fallback. */
@media (hover: none), (pointer: coarse) {
  .vasslab-link-preview { display: none !important; }
}