/*
 * Under the Engine — motorcycle anatomy explorer v0.3.
 * Light theme only. Sharp edges, 1 px rules, technical grid.
 * IBM Plex Sans + Plex Mono. Scoped under #ute-root.
 */

:root {
  --paper:        #F6F5F2;
  --paper-2:      #EFEAE0;
  --surface:      #FFFFFF;
  --ink:          #0A0A0A;
  --ink-soft:     #2A2A26;
  --line:         #B9B3A4;
  --line-soft:    #DDD9CF;
  --mute:         #6B6963;
  --accent:       #1D6B55;
  --warm:         #C2502A;
  --heat:         #E2A93B;
  --intake:       #3E6FB7;
  --exhaust:      #7A6E60;
  --elec:         #1D6B55;
  --sans: "IBM Plex Sans", system-ui, -apple-system, Arial, sans-serif;
  --mono: "IBM Plex Mono", "Courier New", monospace;
}

html, body { height: 100%; margin: 0; padding: 0; }
body.ute-standalone {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
}

/* ─── Shell ───────────────────────────────────────────────────── */
#ute-root {
  display: flex; flex-direction: column; min-height: 100vh; min-height: 100dvh;
  background: var(--paper);
  font-size: 14px; line-height: 1.5; letter-spacing: -0.003em;
}
#ute-root *, #ute-root *::before, #ute-root *::after { box-sizing: border-box; }
#ute-root p { margin: 0; }
#ute-root h1, #ute-root h2, #ute-root h3, #ute-root h4 { margin: 0; color: var(--ink); font-weight: 600; letter-spacing: -0.015em; line-height: 1.2; }
#ute-root a { color: var(--ink); text-decoration: underline; text-underline-offset: 2px; text-decoration-thickness: 1px; }
#ute-root a:hover { color: var(--warm); }
#ute-root button { font: inherit; cursor: pointer; background: transparent; border: 0; padding: 0; color: inherit; }
#ute-root :focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
#ute-root ul { list-style: none; margin: 0; padding: 0; }

.ute-label {
  font-family: var(--mono); font-size: 11px; font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--mute);
}

/* ─── Top app bar ─────────────────────────────────────────────── */
.ute-topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px; padding: 10px 20px;
  background: var(--surface); border-bottom: 1px solid var(--ink);
  flex: 0 0 auto;
  position: sticky; top: 0; z-index: 10;
}
.ute-brand {
  display: inline-flex; align-items: center; gap: 10px;
  text-decoration: none; color: var(--ink);
}
.ute-brand-mark {
  display: inline-block; width: 22px; height: 22px;
  background: var(--ink); position: relative;
}
.ute-brand-mark::after {
  content: ""; position: absolute; left: 4px; right: 4px; top: 10px; height: 2px; background: var(--warm);
}
.ute-brand-name {
  font-family: var(--sans); font-weight: 700; font-size: 15px;
  letter-spacing: 0.02em; text-transform: uppercase;
}
.ute-brand-sub {
  margin-left: 2px; padding-left: 10px; border-left: 1px solid var(--line);
  font-family: var(--mono); font-size: 10.5px; font-weight: 500;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--mute);
}

#ute-root .ute-mode-switch {
  display: inline-flex; gap: 2px;
  background: var(--ink); border: 1px solid var(--ink);
}
#ute-root .ute-mode-switch button {
  padding: 8px 14px;
  font-family: var(--mono); font-size: 11.5px; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink); background: var(--surface);
  border: 0; cursor: pointer;
}
#ute-root .ute-mode-switch button:hover { background: var(--paper-2); }
#ute-root .ute-mode-switch button.is-on { background: var(--ink); color: var(--paper); }
#ute-root .ute-mode-switch button[data-mode="elec"].is-on { background: var(--elec); }

.ute-tools { display: inline-flex; align-items: center; gap: 6px; }
.ute-tbtn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px;
  background: var(--surface); color: var(--ink); border: 1px solid var(--ink);
}
.ute-tbtn:hover { background: var(--paper-2); }
.ute-tbtn svg { width: 15px; height: 15px; }
.ute-tbtn.is-on { background: var(--ink); color: var(--paper); }

/* ─── Stack ────────────────────────────────────────────────── */
.ute-stack {
  display: flex; flex-direction: column; flex: 1 1 auto; min-height: 0;
}

/* ─── Overview motorcycle ────────────────────────────────── */
.ute-overview {
  background: var(--surface); border-bottom: 1px solid var(--ink);
  padding: 20px 24px 16px;
}
.ute-overview-head {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 10px; gap: 20px; flex-wrap: wrap;
}
.ute-overview-head h2 {
  font-size: 20px; font-weight: 600; letter-spacing: -0.015em;
}
.ute-overview-head p {
  font-size: 13px; color: var(--mute); margin: 2px 0 0; max-width: 60ch;
}
.ute-overview-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 4px 10px;
  background: var(--ink); color: var(--paper);
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.12em;
  text-transform: uppercase; font-weight: 600;
}
.ute-overview-badge[data-m="elec"] { background: var(--elec); }

.ute-moto-wrap {
  position: relative;
  background:
    linear-gradient(var(--line-soft) 1px, transparent 1px) 0 0 / 48px 48px,
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px) 0 0 / 48px 48px,
    var(--paper);
  border: 1px solid var(--line);
  overflow: hidden;
}
.ute-moto-wrap.is-blueprint {
  background:
    linear-gradient(#C9D7EB 1px, transparent 1px) 0 0 / 24px 24px,
    linear-gradient(90deg, #C9D7EB 1px, transparent 1px) 0 0 / 24px 24px,
    #F0F4FA;
}
.ute-moto-wrap.is-3d {
  background:
    radial-gradient(ellipse at center 70%, #FFFFFF 0%, #E8E4DA 60%, #BAB2A2 100%);
}
.ute-moto-svg { display: block; width: 100%; height: auto; max-height: 580px; }

/* Blueprint drawing primitives (line-art style) */
.ute-moto-svg.is-blueprint { color: #1E3A5F; }
.ute-moto-svg.is-blueprint .bp-ln       { fill: none; stroke: currentColor; stroke-width: 1.1; stroke-linejoin: round; stroke-linecap: round; }
.ute-moto-svg.is-blueprint .bp-ln-fine  { fill: none; stroke: currentColor; stroke-width: 0.65; stroke-linejoin: round; }
.ute-moto-svg.is-blueprint .bp-ln-thick { fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linejoin: round; stroke-linecap: round; }
.ute-moto-svg.is-blueprint .bp-fill-paper { fill: #F0F4FA; stroke: currentColor; stroke-width: 1.1; }
.ute-moto-svg.is-blueprint .bp-tint       { fill: currentColor; fill-opacity: 0.06; stroke: currentColor; stroke-width: 1.1; }
.ute-moto-svg.is-blueprint .bp-tint-strong{ fill: currentColor; fill-opacity: 0.13; stroke: currentColor; stroke-width: 1.1; }
.ute-moto-svg.is-blueprint .bp-fill-knob  { fill: currentColor; fill-opacity: 0.5; stroke: none; }
.ute-moto-svg.is-blueprint .ute-callout-label { fill: #1E3A5F; }
.ute-moto-svg.is-blueprint .ute-callout-leader { stroke: #1E3A5F; }
.ute-moto-svg.is-blueprint .ute-callout-dot { fill: #F0F4FA; stroke: #1E3A5F; }

/* System-category chip row */
.ute-cats {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-top: 10px; margin-bottom: 10px;
}
#ute-root .ute-cat-chip {
  padding: 5px 11px;
  font-family: var(--mono); font-size: 10.5px; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink); background: var(--surface);
  border: 1px solid var(--line);
  cursor: pointer;
}
#ute-root .ute-cat-chip:hover { background: var(--paper-2); border-color: var(--ink); }
#ute-root .ute-cat-chip.is-on {
  background: var(--ink); color: var(--paper); border-color: var(--ink);
}

/* Category filter — fade non-matching shapes */
.ute-moto-svg[data-cat]:not([data-cat="all"]) .ute-shape:not(.in-cat) { opacity: 0.22; transition: opacity 200ms ease; }
.ute-moto-svg[data-cat]:not([data-cat="all"]) .ute-shape.in-cat        { opacity: 1; transition: opacity 200ms ease; }

/* Desktop hover: focus one shape */
@media (hover: hover) {
  .ute-moto-svg .ute-shape:hover { opacity: 1 !important; }
}

/* Overview view toggle (Diagram / Blueprint) */
#ute-root .ute-view-toggle {
  display: inline-flex; gap: 2px;
  background: var(--ink); border: 1px solid var(--ink);
}
#ute-root .ute-view-toggle button {
  padding: 6px 12px;
  font-family: var(--mono); font-size: 10.5px; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink); background: var(--surface);
  border: 0; cursor: pointer;
}
#ute-root .ute-view-toggle button:hover { background: var(--paper-2); }
#ute-root .ute-view-toggle button.is-on { background: var(--ink); color: var(--paper); }

/* Shape highlighting on overview & component view */
.ute-shape { cursor: pointer; transition: fill 180ms ease, stroke 180ms ease; }
.ute-shape:hover { stroke: var(--warm); }
.ute-shape.is-highlight {
  stroke: var(--warm) !important; stroke-width: 2.5 !important;
  filter: drop-shadow(0 0 8px rgba(194, 80, 42, 0.55));
}
.ute-shape[data-fillable].is-highlight { fill: #F9DECB !important; }

/* Interactive dot — flags parts with a rich close-up (not just a card) */
.ute-ix-dot {
  pointer-events: none;
  fill: var(--warm); stroke: var(--surface); stroke-width: 1.5;
  animation: ute-ix-pulse 2s ease-in-out infinite;
}
@keyframes ute-ix-pulse {
  0%, 100% { r: 5; opacity: 0.95; }
  50%      { r: 7; opacity: 0.65; }
}
.ute-moto-svg[data-cat]:not([data-cat="all"]) .ute-ix-dot { opacity: 0.4; }
.ute-ix-legend {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.06em;
  color: var(--mute); text-transform: uppercase;
  margin-left: 6px;
}
.ute-ix-legend::before {
  content: ""; width: 10px; height: 10px; border-radius: 50%;
  background: var(--warm);
}

/* Callouts */
.ute-callout { cursor: pointer; }
.ute-callout:hover .ute-callout-dot,
.ute-callout.is-on .ute-callout-dot {
  fill: var(--warm); stroke: var(--warm);
}
.ute-callout:hover .ute-callout-leader,
.ute-callout.is-on .ute-callout-leader { stroke: var(--warm); }
.ute-callout:hover .ute-callout-label,
.ute-callout.is-on .ute-callout-label { fill: var(--ink); font-weight: 700; }
.ute-callout-label { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase; fill: var(--mute); }
.ute-callout-leader { stroke: var(--mute); stroke-width: 0.75; fill: none; }
.ute-callout-dot { fill: var(--surface); stroke: var(--mute); }

/* ─── Component view (dynamic slot driven by selection) ──── */
.ute-cview {
  background: var(--paper-2); border-bottom: 1px solid var(--ink);
  padding: 24px 24px 28px;
}
.ute-cview-empty {
  background: var(--surface); border: 1px solid var(--line);
  padding: 20px 20px;
  display: flex; align-items: center; justify-content: center; gap: 12px;
  font-family: var(--mono); font-size: 12px; color: var(--mute);
  letter-spacing: 0.06em; text-transform: uppercase;
}
.ute-cview-empty::before {
  content: ""; width: 10px; height: 10px; background: var(--line);
}
.ute-cview-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 16px; margin-bottom: 14px; flex-wrap: wrap;
}
.ute-cview-head h2 {
  font-size: 22px; font-weight: 700; letter-spacing: -0.015em;
}
#ute-root .ute-cview-close {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase; font-weight: 600;
  background: var(--surface); color: var(--ink); border: 1px solid var(--ink);
  cursor: pointer;
}
#ute-root .ute-cview-close:hover { background: var(--ink); color: var(--paper); }

.ute-cview-stage {
  position: relative;
  background: var(--surface); border: 1px solid var(--ink);
  min-height: 560px;
  padding: 72px 20px 120px;
  display: grid; grid-template-rows: auto 1fr auto; gap: 14px;
}
.ute-cview-chip {
  position: absolute; top: 16px; left: 16px; right: 16px;
  background: var(--surface); border: 2px solid var(--warm);
  padding: 10px 14px;
  display: grid; grid-template-columns: 10px minmax(0, 1fr) auto; gap: 12px; align-items: center;
}
.ute-cview-chip-dot { width: 10px; height: 10px; background: var(--warm); border-radius: 50%; }
.ute-cview-chip .k { font-family: var(--sans); font-size: 13.5px; font-weight: 700; color: var(--warm); display: block; line-height: 1.2; }
.ute-cview-chip .d { font-family: var(--sans); font-size: 12.5px; color: var(--ink-soft); display: block; line-height: 1.35; }
.ute-cview-chip .n { font-family: var(--mono); font-size: 15px; font-weight: 700; color: var(--ink); white-space: nowrap; }

.ute-cview-svg {
  display: block; width: 100%; height: auto;
  max-height: 440px; margin-top: 56px;
}

.ute-cview-controls {
  position: absolute; left: 50%; bottom: 16px; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 6px;
}
#ute-root .ute-cview-action {
  width: 190px; height: 58px;
  background: #2BB76E; color: #FFFFFF;
  font-family: var(--mono); font-size: 15px; font-weight: 700; letter-spacing: 0.1em;
  border: 2px solid var(--ink);
  cursor: pointer; user-select: none; -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent; padding: 0;
  transition: transform 60ms, background 100ms;
}
#ute-root .ute-cview-action:active,
#ute-root .ute-cview-action.is-holding {
  transform: translateY(2px); background: #1E9B59;
}
.ute-cview-hint { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--mute); }

/* Component-view side panel (sliders / stats / description) */
.ute-cview-side {
  display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px;
  margin-top: 14px;
}
.ute-cview-side .card {
  background: var(--paper); border: 1px solid var(--line);
  padding: 14px 16px;
}
.ute-cview-side .card h4 {
  font-size: 12px; font-weight: 700; margin-bottom: 10px;
  letter-spacing: 0.06em; text-transform: uppercase; color: var(--mute);
}
.ute-cview-side .card p { font-size: 13.5px; line-height: 1.5; color: var(--ink-soft); }

/* Parameter sliders inside component view */
.ute-param { margin: 0 0 10px; }
.ute-param:last-child { margin-bottom: 0; }
.ute-param-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 4px; }
.ute-param-head .ute-label { font-size: 10.5px; letter-spacing: 0.06em; }
.ute-param-value { font-family: var(--mono); font-size: 13px; font-weight: 600; color: var(--ink); }
.ute-param input[type="range"] {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 22px; background: transparent; cursor: pointer; margin: 0;
}
.ute-param input[type="range"]:focus { outline: none; }
.ute-param input[type="range"]::-webkit-slider-runnable-track { height: 6px; background: var(--paper-2); border: 1px solid var(--ink); }
.ute-param input[type="range"]::-moz-range-track { height: 6px; background: var(--paper-2); border: 1px solid var(--ink); }
.ute-param input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 16px; height: 16px; margin-top: -6px;
  background: var(--ink); border: 1px solid var(--ink); cursor: grab;
}
.ute-param input[type="range"]::-moz-range-thumb {
  width: 16px; height: 16px; background: var(--ink); border: 1px solid var(--ink); border-radius: 0; cursor: grab;
}

/* Stat tiles */
.ute-stats {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1px; background: var(--line);
  border: 1px solid var(--line);
}
.ute-stats .stat { background: var(--surface); padding: 10px 12px; }
.ute-stats .stat .k { display: block; font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; color: var(--mute); text-transform: uppercase; margin-bottom: 2px; }
.ute-stats .stat .v { font-family: var(--mono); font-size: 18px; font-weight: 700; color: var(--ink); letter-spacing: -0.01em; line-height: 1.1; }
.ute-stats .stat .u { font-size: 10.5px; color: var(--mute); margin-left: 3px; }

/* Timing strip */
.ute-timing { background: var(--surface); border: 1px solid var(--ink); display: grid; align-items: stretch; height: 44px; position: relative; }
.ute-timing-track { position: relative; height: 100%; }
.ute-timing-seg {
  position: absolute; top: 0; bottom: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--ink);
  border-right: 1px solid var(--ink);
}
.ute-timing-seg[data-s="intake"]      { background: #D8E3F0; }
.ute-timing-seg[data-s="compression"] { background: #EEE8D8; }
.ute-timing-seg[data-s="power"]       { background: #F2CDB9; }
.ute-timing-seg[data-s="exhaust"]     { background: #D7D1C4; }
.ute-timing-seg[data-s="scavenge"]    { background: #D8E3F0; }
.ute-timing-needle { position: absolute; top: -4px; bottom: -4px; width: 2px; background: var(--ink); pointer-events: none; }

/* ─── Running (play/pause/step) ──────────────────────────── */
.ute-run { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.ute-run button {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 8px 12px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase; font-weight: 600;
  background: var(--surface); color: var(--ink); border: 1px solid var(--ink);
}
.ute-run button:hover { background: var(--paper-2); }
.ute-run button.is-on { background: var(--warm); color: var(--surface); border-color: var(--warm); }

/* Stroke badge (reused) */
.ute-stroke-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px;
  background: var(--ink); color: var(--paper);
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.12em;
  text-transform: uppercase; font-weight: 600;
}
.ute-stroke-badge::before { content: ""; width: 8px; height: 8px; background: var(--heat); }
.ute-stroke-badge[data-s="intake"]::before      { background: var(--intake); }
.ute-stroke-badge[data-s="compression"]::before { background: var(--line); }
.ute-stroke-badge[data-s="power"]::before       { background: var(--warm); }
.ute-stroke-badge[data-s="exhaust"]::before     { background: var(--exhaust); }
.ute-stroke-badge[data-s="scavenge"]::before    { background: var(--intake); }
.ute-stroke-badge[data-s="elec"]::before        { background: var(--elec); }

/* ─── Rider view ─────────────────────────────────────────── */
.ute-rider {
  background: var(--surface); border-bottom: 1px solid var(--ink);
  padding: 24px 24px 28px;
}
.ute-rider-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 16px; margin-bottom: 14px; flex-wrap: wrap;
}
.ute-rider-head h2 { font-size: 20px; font-weight: 600; letter-spacing: -0.015em; }
.ute-rider-head p { font-size: 13px; color: var(--mute); max-width: 56ch; }
.ute-rider-wrap {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 14px 14px 14px;
}
.ute-rider-svg { display: block; width: 100%; height: auto; max-height: 520px; }

.ute-rider-dash {
  margin-top: 14px;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px; background: var(--line); border: 1px solid var(--line);
}
.ute-rider-dash .cell { background: var(--surface); padding: 10px 12px; }
.ute-rider-dash .cell .k { display: block; font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; color: var(--mute); text-transform: uppercase; }
.ute-rider-dash .cell .v { font-family: var(--mono); font-size: 17px; font-weight: 700; color: var(--ink); }

/* Rider toast (horn beep etc.) */
.ute-rider-toast {
  position: absolute; left: 50%; top: 20px; transform: translateX(-50%);
  padding: 8px 14px; background: var(--warm); color: var(--paper);
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; font-weight: 700;
  opacity: 0; transition: opacity 180ms ease;
}
.ute-rider-toast.is-on { opacity: 1; }

/* Wiring component view (electrical schematic + hover tooltip) */
.ute-wire-svg .wn { fill: #FFFFFF; stroke: #0A0A0A; stroke-width: 1.5; cursor: pointer; transition: fill 150ms ease; }
.ute-wire-svg .wn:hover { fill: #FDE9D9; }
.ute-wire-svg .wn.is-focus { fill: #F9DECB; stroke: var(--warm); stroke-width: 2.5; filter: drop-shadow(0 0 6px rgba(194, 80, 42, 0.45)); }
.ute-wire-svg .wire-lbl { font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; fill: #0A0A0A; pointer-events: none; }
.ute-wire-svg .wire-sub { font-family: var(--mono); font-size: 9.5px; fill: var(--mute); pointer-events: none; }
.ute-wire-svg .w-pos { stroke: #C2502A; }
.ute-wire-svg .w-neg { stroke: #0A0A0A; }
.ute-wire-svg .w-hv  { stroke: #1D6B55; stroke-dasharray: 4 3; }
.ute-wire-svg .w-sig { stroke: #3E6FB7; stroke-dasharray: 2 2; }
.ute-wire-svg .w-ac  { stroke: #E2A93B; }

.ute-wire-pop {
  position: absolute; top: 12px; right: 12px;
  background: var(--surface); border: 2px solid var(--warm);
  padding: 10px 12px; min-width: 220px;
  font-family: var(--mono); font-size: 11.5px;
  pointer-events: none;
}
.ute-wire-pop .ttl {
  display: block; font-weight: 800; font-size: 13px; margin-bottom: 6px; color: var(--warm);
}
.ute-wire-pop .row { display: flex; justify-content: space-between; gap: 10px; margin-bottom: 2px; }
.ute-wire-pop .row .k { color: var(--mute); text-transform: uppercase; letter-spacing: 0.04em; }
.ute-wire-pop .row .v { color: var(--ink); font-weight: 700; }

/* ─── Dyno (test track with live charts) ──────────────── */
.ute-dyno {
  background: var(--paper-2); border-bottom: 1px solid var(--ink);
  padding: 20px 24px 24px;
}
.ute-dyno-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 16px; margin-bottom: 12px; flex-wrap: wrap;
}
.ute-dyno-head h2 { font-size: 20px; font-weight: 600; letter-spacing: -0.015em; }
.ute-dyno-head p { font-size: 12.5px; color: var(--mute); max-width: 60ch; margin: 2px 0 0; }
.ute-dyno-controls { display: inline-flex; gap: 8px; }
#ute-root .ute-dyno-btn {
  padding: 8px 18px;
  font-family: var(--mono); font-size: 11.5px; font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--surface); color: var(--ink); border: 2px solid var(--ink);
  cursor: pointer;
}
#ute-root .ute-dyno-btn:hover { background: var(--paper); }
#ute-root .ute-dyno-btn.is-rec { background: var(--warm); color: var(--surface); border-color: var(--warm); }
#ute-root .ute-dyno-btn.is-reset:hover { background: var(--ink); color: var(--paper); }

.ute-dyno-charts {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px;
  background: var(--line); border: 1px solid var(--line);
}
.ute-dyno-chart {
  background: var(--surface); padding: 14px 16px;
}
.ute-dyno-chart-head {
  display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 6px;
}
.ute-dyno-chart-head .k {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--mute); font-weight: 600;
}
.ute-dyno-chart-head .v {
  font-family: var(--mono); font-size: 18px; font-weight: 700; color: var(--ink);
}
.ute-dyno-chart-head .v .u { font-size: 11px; color: var(--mute); margin-left: 3px; }
.ute-dyno-chart svg { display: block; width: 100%; height: 110px; }
.ute-dyno-chart .area { fill-opacity: 0.08; }
.ute-dyno-chart .ln { fill: none; stroke-width: 2; }
.ute-dyno-chart .grid { stroke: var(--line-soft); stroke-width: 1; }
.ute-dyno-chart .axis { stroke: var(--line); stroke-width: 1; }
.ute-dyno-chart .axis-label { font-family: var(--mono); font-size: 9.5px; fill: var(--mute); }

.ute-dyno-findings {
  margin-top: 10px;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px; background: var(--line); border: 1px solid var(--line);
}
.ute-dyno-findings .cell { background: var(--surface); padding: 10px 12px; }
.ute-dyno-findings .k { display: block; font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; color: var(--mute); text-transform: uppercase; }
.ute-dyno-findings .v { font-family: var(--mono); font-size: 17px; font-weight: 700; color: var(--ink); }
.ute-dyno-findings .u { font-size: 11px; color: var(--mute); margin-left: 3px; }

@media (max-width: 720px) {
  .ute-dyno-charts { grid-template-columns: 1fr; }
}
@media (max-width: 540px) {
  .ute-dyno { padding: 16px 14px 18px; }
}

/* ─── Footer ─────────────────────────────────────────────── */
.ute-foot {
  padding: 14px 20px;
  background: var(--surface); border-top: 1px solid var(--ink);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em;
  color: var(--mute);
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px; flex-wrap: wrap;
}
.ute-foot a { color: var(--ink); }

/* ─── Responsive ─────────────────────────────────────────── */
@media (max-width: 960px) {
  .ute-cview-side { grid-template-columns: 1fr; }
  .ute-cview-stage { padding: 68px 14px 110px; min-height: 460px; }
  .ute-cview-svg { max-height: 340px; }
}
@media (max-width: 540px) {
  .ute-topbar { flex-wrap: wrap; gap: 10px; padding: 10px 14px; }
  .ute-brand-sub { display: none; }
  #ute-root .ute-mode-switch button { padding: 7px 10px; font-size: 10.5px; }
  .ute-overview { padding: 14px 14px 12px; }
  .ute-overview-head h2 { font-size: 16px; }
  .ute-cview { padding: 16px 14px 22px; }
  .ute-cview-stage { padding: 68px 10px 110px; min-height: 420px; }
  .ute-cview-chip { padding: 8px 10px; }
  .ute-cview-chip .k { font-size: 12px; }
  .ute-cview-chip .d { font-size: 11px; }
  .ute-cview-chip .n { font-size: 13px; }
  .ute-rider { padding: 16px 14px 20px; }
  .ute-foot { font-size: 10px; padding: 12px 14px; }
}