/* Atrium Design System v2 — Semetric Labs shared theme
   Direction: dark editorial operations console.
   Parchment-and-copper neutrals, architectural display type,
   tabular instrument readouts, video as the primary material. */

:root {
  color-scheme: dark;

  /* palette — copper hue family, perceptually uniform */
  --bg: oklch(0.165 0.009 72);
  --bg-raise: oklch(0.195 0.011 72);
  --bg-inset: oklch(0.135 0.007 72);
  --ink: oklch(0.905 0.028 88);
  --ink-dim: oklch(0.66 0.02 80);
  --ink-faint: oklch(0.62 0.014 75);
  --copper: oklch(0.72 0.105 68);
  --copper-bright: oklch(0.84 0.095 78);
  --copper-veil: oklch(0.72 0.105 68 / 0.10);
  --hairline: oklch(0.72 0.105 68 / 0.16);
  --hairline-strong: oklch(0.72 0.105 68 / 0.36);

  /* sparse status color */
  --ok: oklch(0.72 0.12 155);
  --warn: oklch(0.76 0.11 85);
  --crit: oklch(0.62 0.15 32);

  /* type */
  --font-display: "Bodoni Moda", "Didot", "Times New Roman", serif;
  --font-body: "Geologica", "Avenir Next", "Segoe UI", sans-serif;
  --font-mono: "B612 Mono", "SFMono-Regular", Menlo, monospace;

  /* 4pt spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-24: 96px;

  /* semantic spacing aliases for new components */
  --space-2xs: var(--space-1);
  --space-xs: var(--space-2);
  --space-sm: var(--space-3);
  --space-md: var(--space-4);
  --space-lg: var(--space-6);
  --space-xl: var(--space-8);
  --space-2xl: var(--space-12);
  --space-3xl: var(--space-16);
  --space-4xl: var(--space-24);

  /* motion */
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-out-quint: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);

  --radius: 10px;
  --radius-lg: 18px;
  --shadow: 0 24px 64px oklch(0.10 0.006 72 / 0.55);

  /* legacy aliases (kept so existing demo pages migrate gradually) */
  --panel: var(--bg-raise);
  --panel-strong: oklch(0.22 0.013 72);
  --border: var(--hairline);
  --text: var(--ink);
  --muted: var(--ink-dim);
  --accent: var(--copper);
  --accent-light: var(--copper-bright);
  --green: var(--ok);
  --yellow: var(--warn);
  --red: var(--crit);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-optical-sizing: auto;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: oklch(0.72 0.105 68 / 0.30); color: var(--copper-bright); }

/* scrollbar */
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-track { background: var(--bg-inset); }
*::-webkit-scrollbar-thumb { background: oklch(0.72 0.105 68 / 0.35); border: 2px solid var(--bg-inset); border-radius: 999px; }
*::-webkit-scrollbar-thumb:hover { background: oklch(0.72 0.105 68 / 0.55); }

/* ---------- shared chrome ---------- */

.wrap { max-width: 1320px; margin: 0 auto; padding: var(--space-8) var(--space-8) var(--space-16); }

.skip-link {
  position: fixed;
  top: var(--space-md);
  left: var(--space-md);
  z-index: 600;
  padding: 10px 16px;
  background: var(--copper-bright);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  text-decoration: none;
  transform: translateY(-180%);
  transition: transform 180ms var(--ease-out-quart);
}
.skip-link:focus { transform: translateY(0); }

.ambient-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.24;
  background-image:
    linear-gradient(to right, var(--hairline) 1px, transparent 1px),
    linear-gradient(to bottom, var(--hairline) 1px, transparent 1px);
  background-size: 8.333vw 100%, 100% 96px;
  mask-image: linear-gradient(to bottom, oklch(0% 0 0 / 0.7), transparent 78%);
}
.landing-shell { position: relative; z-index: 1; }

.brand {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  padding-bottom: var(--space-6);
  margin-bottom: var(--space-8);
  border-bottom: 1px solid var(--hairline);
}
.brand h1 { margin: 2px 0 0; font-size: 1.6rem; font-weight: 500; }

.wordmark {
  font-family: var(--font-display);
  font-size: 1.45rem;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-decoration: none;
}
.wordmark em { font-style: italic; color: var(--copper); }

.eyebrow {
  color: var(--copper);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.actions { display: flex; align-items: center; gap: var(--space-3); flex-wrap: wrap; justify-content: flex-end; }

.badge {
  background: var(--copper-veil);
  color: var(--copper-bright);
  border: 1px solid var(--hairline-strong);
  padding: 6px 12px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}

.btn {
  min-height: 44px;
  border: 1px solid var(--hairline-strong);
  background: transparent;
  color: var(--ink);
  border-radius: 999px;
  padding: 10px 20px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 160ms ease-out, border-color 160ms ease-out, color 160ms ease-out;
}
.btn:hover:not(:disabled) { background: var(--copper-veil); border-color: var(--copper); color: var(--copper-bright); }
.btn:focus-visible, a:focus-visible, button:focus-visible {
  outline: 2px solid var(--copper-bright);
  outline-offset: 3px;
  border-radius: 999px;
}

.btn.primary { background: var(--copper); border-color: var(--copper); color: var(--bg); font-weight: 700; }
.btn.primary:hover:not(:disabled) { background: var(--copper-bright); border-color: var(--copper-bright); color: var(--bg); }

.btn.secondary { border-color: var(--hairline); color: var(--ink-dim); }
.btn.secondary:hover:not(:disabled) { border-color: var(--hairline-strong); color: var(--ink); background: transparent; }

.panel {
  background: var(--bg-raise);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.user-chip {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  border: 1px solid var(--hairline);
  border-radius: 999px;
  padding: 5px 14px 5px 5px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--ink-dim);
}

.user-avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--copper-veil);
  border: 1px solid var(--hairline-strong);
}

/* auth state indicators */
.demo-no-auth .auth-required { display: block; }
.demo-authenticated .auth-required { display: none; }
.demo-authenticated .auth-visible { display: initial; }
.demo-no-auth .auth-visible { display: none; }

/* toast */
.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1000;
  background: var(--bg-raise);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius);
  padding: 14px 24px;
  box-shadow: var(--shadow);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  transform: translateX(120%);
  transition: transform 320ms cubic-bezier(0.22, 1, 0.36, 1);
}
.toast.visible { transform: translateX(0); }

/* ---------- landing: masthead ---------- */

.masthead {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 68px;
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--hairline);
}
.masthead-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-right: auto;
  padding-left: var(--space-6);
}

/* ---------- landing: hero ---------- */

.hero { padding: var(--space-16) 0 var(--space-12); max-width: 1100px; }

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: var(--copper);
  margin: 0 0 var(--space-4);
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(4.2rem, 11vw, 9.6rem);
  line-height: 0.82;
  letter-spacing: -0.045em;
  margin: 0 0 var(--space-6);
  color: var(--ink);
}
.hero-title em { font-style: italic; color: var(--copper); }

.hero-after {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}
.hero-lede {
  max-width: 56ch;
  font-size: 1.06rem;
  line-height: 1.75;
  color: var(--ink-dim);
  margin: 0;
}
.hero-index {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--copper);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
}
.hero-index span:last-child {
  font-size: 1.2rem;
  transition: transform 220ms var(--ease-out-quint);
}
.hero-index:hover span:last-child { transform: translateY(4px); }

.catalogue-section { scroll-margin-top: var(--space-xl); }
.section-intro {
  display: grid;
  grid-template-columns: minmax(180px, 0.55fr) minmax(0, 1fr);
  align-items: end;
  gap: var(--space-xl);
  padding: var(--space-3xl) var(--space-md) var(--space-xl);
}
.section-index {
  margin: 0;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.section-intro h2 {
  max-width: 18ch;
  margin: 0;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5vw, 4.5rem);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 0.98;
}

/* instrument readout strip */
.hero-readouts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-8);
  border-top: 1px solid var(--hairline);
  padding-top: var(--space-5);
}
.readout { display: flex; flex-direction: column; gap: 2px; }
.readout-value {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  letter-spacing: 0.02em;
}
.readout-value sup { font-size: 0.6em; color: var(--copper); }
.readout-label {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* ---------- landing: instrument catalogue ---------- */

.catalogue { display: flex; flex-direction: column; }

.instrument {
  display: grid;
  grid-template-columns: 96px minmax(0, 1.05fr) minmax(0, 1fr);
  gap: var(--space-8);
  align-items: center;
  padding: var(--space-10, 40px) var(--space-4);
  border-top: 1px solid var(--hairline);
  cursor: pointer;
  position: relative;
  isolation: isolate;
  transition: background 220ms var(--ease-out-quart), opacity 220ms var(--ease-out-quart);
}
.instrument:last-child { border-bottom: 1px solid var(--hairline); }
.instrument:hover { background: oklch(0.72 0.105 68 / 0.045); }
.instrument:focus-visible {
  outline: 2px solid var(--copper-bright);
  outline-offset: -2px;
  border-radius: 0;
}
.instrument:active .instrument-preview { transform: scale(0.992); }
.instrument-main { min-width: 0; }
.instrument-kicker {
  color: var(--copper);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.instrument-num {
  font-family: var(--font-display);
  font-size: 2.6rem;
  line-height: 1;
  color: var(--copper);
  opacity: 0.9;
  font-variant-numeric: lining-nums;
}

.instrument-name {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.9rem, 3.4vw, 2.9rem);
  line-height: 1.05;
  margin: var(--space-2) 0 var(--space-3);
  color: var(--ink);
  transition: color 200ms ease-out;
}
.instrument:hover .instrument-name { color: var(--copper-bright); }

.instrument-desc {
  color: var(--ink-dim);
  font-size: 0.95rem;
  line-height: 1.7;
  margin: 0 0 var(--space-4);
  max-width: 52ch;
}

.instrument-specs {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: 0;
  margin: 0 0 var(--space-4);
}
.instrument-specs li {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  border: 1px solid var(--hairline);
  border-radius: 999px;
  padding: 4px 10px;
}

.instrument-cta {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--copper);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}
.instrument-cta::after {
  content: "→";
  transition: transform 220ms cubic-bezier(0.22, 1, 0.36, 1);
}
.instrument:hover .instrument-cta::after { transform: translateX(6px); }

/* preview pane — video as primary material */
.instrument-preview {
  position: relative;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-inset);
  transition: transform 120ms var(--ease-out-quart), border-color 220ms var(--ease-out-quart);
}
.instrument:hover .instrument-preview { border-color: var(--hairline-strong); }
.instrument-preview video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(0.85) contrast(1.02);
  transition: filter 300ms ease-out, transform 600ms cubic-bezier(0.22, 1, 0.36, 1);
}
.instrument:hover .instrument-preview video { filter: saturate(1) contrast(1.02); transform: scale(1.015); }

/* document preview (ClauseWise) — engraved page under scan */
.preview-doc {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.preview-doc-page {
  width: 62%;
  height: 78%;
  background: oklch(0.88 0.03 90 / 0.06);
  border: 1px solid var(--hairline);
  border-radius: 4px;
  padding: var(--space-4) var(--space-5);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.preview-doc-rule { height: 5px; border-radius: 2px; background: oklch(0.905 0.028 88 / 0.16); }
.preview-doc-rule.short { width: 55%; }
.preview-doc-rule.mid { width: 78%; }
.preview-doc-rule.flag { background: oklch(0.72 0.105 68 / 0.55); width: 64%; }
.preview-doc-scan {
  position: absolute;
  left: 8%;
  right: 8%;
  height: 1px;
  background: var(--copper-bright);
  box-shadow: 0 0 12px oklch(0.72 0.105 68 / 0.8);
  top: 12%;
  animation: doc-scan 4.8s cubic-bezier(0.45, 0, 0.55, 1) infinite alternate;
}
@keyframes doc-scan { from { top: 12%; } to { top: 86%; } }

.preview-caption {
  position: absolute;
  right: var(--space-sm);
  bottom: var(--space-sm);
  z-index: 4;
  padding: 5px 8px;
  background: var(--bg-inset);
  border: 1px solid var(--hairline);
  color: var(--ink-dim);
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.05em;
}

/* Scout preview — a measured play, not stock sports imagery */
.preview-field,
.preview-flow,
.preview-recall,
.preview-gauge {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.preview-field {
  background:
    linear-gradient(90deg, oklch(0.25 0.035 145 / 0.5), oklch(0.18 0.02 145 / 0.5)),
    repeating-linear-gradient(90deg, transparent 0 16.5%, oklch(0.72 0.105 68 / 0.025) 16.5% 33%);
}
.preview-field::before {
  content: "";
  position: absolute;
  inset: 8%;
  border: 1px solid oklch(0.84 0.03 145 / 0.3);
}
.field-line.half { position: absolute; inset: 8% auto 8% 50%; width: 1px; background: oklch(0.84 0.03 145 / 0.3); }
.field-circle { position: absolute; top: 50%; left: 50%; width: 22%; aspect-ratio: 1; border: 1px solid oklch(0.84 0.03 145 / 0.3); border-radius: 50%; transform: translate(-50%, -50%); }
.field-box { position: absolute; top: 29%; width: 17%; height: 42%; border: 1px solid oklch(0.84 0.03 145 / 0.3); }
.field-box.left { left: 8%; border-left: 0; }
.field-box.right { right: 8%; border-right: 0; }
.player-dot { position: absolute; width: 7px; height: 7px; border-radius: 50%; background: var(--copper-bright); box-shadow: 0 0 0 3px var(--copper-veil); }
.player-dot.p1 { left: 19%; top: 66%; }
.player-dot.p2 { left: 40%; top: 39%; }
.player-dot.p3 { left: 63%; top: 59%; }
.player-dot.p4 { left: 80%; top: 29%; }
.preview-field svg,
.preview-flow svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.preview-field path { fill: none; stroke: var(--copper-bright); stroke-width: 0.65; stroke-dasharray: 3 2; vector-effect: non-scaling-stroke; }

/* Flow preview */
.preview-flow {
  background:
    radial-gradient(circle at 26% 32%, oklch(0.72 0.105 68 / 0.12), transparent 18%),
    linear-gradient(145deg, var(--bg-inset), oklch(0.23 0.014 72));
}
.flow-zone { position: absolute; inset: 10% 8% 12%; border: 1px solid var(--hairline); transform: perspective(300px) rotateX(18deg); }
.flow-boundary { position: absolute; left: 8%; right: 8%; top: 48%; border-top: 1px dashed var(--copper-bright); }
.preview-flow .track { fill: none; stroke-width: 0.75; vector-effect: non-scaling-stroke; stroke-dasharray: 2 2; }
.preview-flow .track.one,
.preview-flow .track.three { stroke: var(--ok); }
.preview-flow .track.two { stroke: var(--crit); }
.flow-count {
  position: absolute;
  top: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.flow-count.in { left: var(--space-sm); color: var(--ok); }
.flow-count.out { right: var(--space-sm); color: oklch(0.72 0.11 32); }

/* Recall preview */
.preview-recall { padding: var(--space-lg); background: linear-gradient(145deg, var(--bg-inset), oklch(0.21 0.012 72)); }
.recall-frame { height: 40%; display: grid; grid-template-columns: repeat(4, 1fr); gap: 3px; }
.recall-frame span { background: oklch(0.72 0.105 68 / 0.07); border: 1px solid var(--hairline); }
.recall-frame span:nth-child(2) { background: oklch(0.72 0.105 68 / 0.16); }
.recall-query { margin-top: var(--space-sm); color: var(--ink); font-family: var(--font-body); font-size: 0.7rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.recall-result { display: flex; gap: var(--space-xs); margin-top: var(--space-xs); color: var(--ink-dim); font-size: 0.6rem; }
.recall-result time { color: var(--copper); font-family: var(--font-mono); }
.recall-timeline { position: absolute; left: var(--space-lg); right: var(--space-lg); bottom: 26px; height: 2px; background: var(--hairline); }
.recall-timeline i { position: absolute; left: 42%; width: 28%; height: 100%; background: var(--copper); }
.recall-timeline b { position: absolute; left: 42%; top: 50%; width: 7px; height: 7px; border-radius: 50%; background: var(--copper-bright); transform: translate(-50%, -50%); }

/* Gauge preview — physical reconciliation */
.preview-gauge { display: grid; grid-template-columns: 1fr 108px; background: linear-gradient(145deg, var(--bg-inset), oklch(0.21 0.012 72)); }
.gauge-scene { position: relative; overflow: hidden; border-right: 1px solid var(--hairline); }
.gauge-telemetry { position: absolute; inset: 22% 7% 16%; width: 86%; height: 62%; overflow: visible; }
.gauge-telemetry path { fill: none; vector-effect: non-scaling-stroke; }
.telemetry-grid { stroke: var(--hairline); stroke-width: 1; }
.telemetry-speed { stroke: var(--copper-bright); stroke-width: 1.8; }
.telemetry-steer { stroke: var(--ok); stroke-width: 1.4; opacity: .62; }
.telemetry-chip { position: absolute; top: 8%; z-index: 2; color: var(--ink-faint); font: .48rem var(--font-mono); letter-spacing: .05em; }
.can-chip { left: 7%; }
.pose-chip { right: 7%; }
.dock-door { position: absolute; left: 17%; right: 17%; top: 8%; bottom: 25%; border: 1px solid var(--hairline-strong); background: repeating-linear-gradient(0deg, oklch(0.72 0.105 68 / 0.035) 0 12px, transparent 12px 24px); }
.dock-floor { position: absolute; left: -10%; right: -10%; bottom: -20%; height: 52%; border-top: 1px solid var(--hairline); transform: perspective(140px) rotateX(52deg); background: repeating-linear-gradient(90deg, transparent 0 32px, var(--hairline) 32px 33px); }
.crate { position: absolute; width: 21px; height: 18px; border: 1px solid var(--copper); background: var(--copper-veil); }
.crate::before,
.crate::after { content: ""; position: absolute; background: var(--hairline-strong); }
.crate::before { inset: 0 50%; width: 1px; }
.crate::after { inset: 50% 0; height: 1px; }
.crate.c1 { left: 24%; bottom: 20%; }
.crate.c2 { left: 37%; bottom: 18%; }
.crate.c3 { left: 50%; bottom: 23%; }
.crate.c4 { left: 33%; bottom: 34%; }
.crate.c5 { left: 47%; bottom: 38%; }
.gauge-scan { position: absolute; top: 8%; bottom: 14%; width: 1px; left: 20%; background: var(--copper-bright); box-shadow: 0 0 10px var(--copper); animation: gauge-scan 4.2s var(--ease-out-quint) infinite alternate; }
@keyframes gauge-scan { to { transform: translateX(150px); } }
.gauge-reconcile { display: flex; flex-direction: column; justify-content: center; gap: 2px; padding: var(--space-sm); font-family: var(--font-mono); }
.gauge-reconcile span { color: var(--ink-faint); font-size: 0.55rem; letter-spacing: 0.08em; }
.gauge-reconcile strong { color: var(--ink); font-size: 1.1rem; font-variant-numeric: tabular-nums; }
.gauge-reconcile em { color: var(--ok); font-size: 0.55rem; font-style: normal; text-transform: uppercase; }

/* gating states */
.instrument.locked,
.instrument.signed-out,
.instrument.error { cursor: not-allowed; }
.instrument.locked .instrument-main,
.instrument.signed-out .instrument-main,
.instrument.error .instrument-main { opacity: 0.42; }
.instrument.locked .instrument-preview video,
.instrument.signed-out .instrument-preview video { filter: grayscale(0.9) brightness(0.6); }
.instrument.locked .instrument-preview .preview-doc,
.instrument.signed-out .instrument-preview .preview-doc { opacity: 0.35; }

.instrument-lock {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
  background: oklch(0.135 0.007 72 / 0.88);
  backdrop-filter: blur(3px);
}
.instrument.locked .instrument-lock,
.instrument.signed-out .instrument-lock,
.instrument.error .instrument-lock { display: flex; }
.lock-mark { color: var(--copper); font-size: 1rem; }

/* no-access panel */
.no-access-panel {
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: var(--space-12) var(--space-8);
  text-align: center;
  margin-top: var(--space-8);
}
.no-access-panel h2 { font-family: var(--font-display); font-weight: 500; margin: 0 0 var(--space-3); }
.no-access-panel p { color: var(--ink-dim); font-size: 0.95rem; line-height: 1.7; margin: 0 auto var(--space-6); max-width: 46ch; }

.catalogue-error {
  padding: var(--space-3xl) var(--space-md);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}
.catalogue-error h2 { margin: var(--space-sm) 0; font-family: var(--font-display); font-size: 2rem; font-weight: 400; }
.catalogue-error p:not(.eyebrow) { margin: 0 0 var(--space-lg); color: var(--ink-dim); }

.manifesto {
  display: grid;
  grid-template-columns: minmax(180px, 0.55fr) minmax(0, 1fr);
  gap: var(--space-xl);
  padding: var(--space-4xl) var(--space-md);
  border-bottom: 1px solid var(--hairline);
}
.manifesto-index {
  margin: var(--space-sm) 0 0;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.manifesto-copy {
  max-width: 20ch;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5vw, 4.75rem);
  font-weight: 400;
  letter-spacing: -0.04em;
  line-height: 1;
}
.manifesto-copy em { color: var(--copper); font-style: italic; }

/* footer */
.colophon {
  margin-top: var(--space-16);
  padding-top: var(--space-6);
  border-top: 1px solid var(--hairline);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.colophon p {
  margin: 0;
  color: var(--ink-faint);
  font-size: 0.82rem;
  max-width: 64ch;
  line-height: 1.7;
}
.colophon .contact-link {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--copper);
  text-decoration: none;
}
.colophon .contact-link:hover { color: var(--copper-bright); }

/* ---------- orchestrated entrance ---------- */

.reveal { opacity: 0; transform: translateY(18px); }
body.is-loaded .reveal {
  opacity: 1;
  transform: none;
  transition: opacity 700ms cubic-bezier(0.22, 1, 0.36, 1), transform 700ms cubic-bezier(0.22, 1, 0.36, 1);
  transition-delay: var(--reveal-delay, 0ms);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
  .preview-doc-scan { animation: none; }
  .gauge-scan { animation: none; }
  .instrument, .instrument-name, .instrument-cta::after, .instrument-preview video { transition: none; }
}

/* ---------- responsive ---------- */

@media (max-width: 1024px) {
  .instrument { grid-template-columns: 64px minmax(0, 1fr); }
  .instrument-preview { grid-column: 2; max-width: 560px; }
}

@media (max-width: 640px) {
  .wrap { padding: var(--space-5) max(var(--space-5), env(safe-area-inset-right)) var(--space-12) max(var(--space-5), env(safe-area-inset-left)); }
  .ambient-grid { background-size: 25vw 100%, 100% 72px; opacity: 0.18; }
  .masthead { flex-wrap: wrap; }
  .masthead-meta { padding-left: 0; width: 100%; order: 3; }
  .hero { padding: var(--space-10, 40px) 0 var(--space-8); }
  .hero-title { font-size: clamp(4rem, 22vw, 6.2rem); line-height: 0.84; }
  .hero-after { grid-template-columns: 1fr; gap: var(--space-lg); }
  .hero-readouts { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-sm); }
  .readout-value { font-size: 1.05rem; }
  .readout { min-width: 0; }
  .readout-label { max-width: 12ch; font-size: 0.52rem; line-height: 1.4; }
  .section-intro,
  .manifesto { grid-template-columns: 1fr; gap: var(--space-lg); padding-left: var(--space-xs); padding-right: var(--space-xs); }
  .section-intro { padding-top: var(--space-2xl); }
  .manifesto { padding-top: var(--space-3xl); padding-bottom: var(--space-3xl); }
  .instrument { grid-template-columns: 1fr; gap: var(--space-4); padding: var(--space-8) var(--space-2); }
  .instrument-num { position: absolute; top: var(--space-xl); right: var(--space-xs); font-size: 1.6rem; }
  .instrument-main { padding-right: var(--space-xl); }
  .instrument-name { font-size: clamp(2rem, 12vw, 3rem); }
  .instrument-desc { font-size: 1rem; }
  .instrument-specs { padding-right: 0; }
  .instrument-cta { min-height: 44px; align-items: center; }
  .instrument-preview { grid-column: 1; }
  .brand { align-items: flex-start; flex-direction: column; }
  .actions { justify-content: flex-start; }
  .masthead .actions { width: 100%; }
  .masthead .btn { min-height: 44px; }
  .preview-gauge { grid-template-columns: 1fr 92px; }
}

@media (hover: none) {
  .instrument:hover { background: transparent; }
  .instrument:hover .instrument-name { color: var(--ink); }
  .instrument:hover .instrument-cta::after { transform: none; }
}

@media (pointer: coarse) {
  .btn { min-height: 44px; }
}