/* MatDrone LENS — sensor stage (tabs, HUD, panels, flat fallback) + process route.
   Prefixes: lens-, proc-. Tokens only. Mobile-first, breakpoints 600 / 900 / 1200.
   Gating rule: nothing is hidden unless .lens--js (set by lens.js) is present.
   .lens--live (scene booted) enables sticky pinning; .lens--fallback shows the 2D canvas. */

/* ============================ LENS STAGE ============================ */
.lens { position: relative; }

.lens-stage {
  position: relative;
  width: 100%;
  min-height: 100vh;
}
/* Scene booted: pin the stage and give the section scroll travel to step modes. */
.lens--live { padding-block: 0; min-height: 420vh; }
.lens--live .lens-stage {
  position: sticky;
  top: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

/* 2D canvas fallback (drawn by lens.js when WebGL unavailable) */
.lens-flat {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0;
  transition: opacity var(--t) var(--ease-out);
  background: var(--bg);
}
.lens--fallback .lens-flat { opacity: 1; }
.lens-flat canvas { width: 100%; height: 100%; display: block; }

/* Orbit-drag surface (FLIGHT reads data-scene-drag). Touch works via pointer events. */
.lens-drag {
  position: absolute;
  inset: 0;
  z-index: 1;
  touch-action: pan-y; /* horizontal drags orbit the camera; vertical swipes still scroll the page */
  cursor: grab;
}
.lens-drag.is-dragging { cursor: grabbing; }
@media (hover: none), (pointer: coarse) { .lens-drag { cursor: default; } }

/* Corner brackets frame */
.lens-frame {
  position: absolute;
  inset: clamp(0.75rem, 2.5vw, 1.75rem);
  z-index: 2;
  pointer-events: none;
}

/* UI layer: text sits above drag surface; only interactive children receive events. */
.lens-ui {
  position: relative;
  z-index: 3;
  pointer-events: none;
  padding-block: clamp(5.5rem, 12vh, 8rem);
}
.lens-switch,
.lens-panels,
.lens-more { pointer-events: auto; }

.lens-head { max-width: 46rem; margin-bottom: clamp(2rem, 5vw, 4rem); }
.lens-head__lead { margin-top: 1rem; color: var(--fg-2); max-width: 46ch; }

/* ---------- HUD corners (decorative, aria-hidden) ---------- */
.lens-data { position: absolute; inset: 0; z-index: 2; pointer-events: none; }

.lens-count {
  position: absolute;
  top: clamp(1.25rem, 3vw, 2.5rem);
  left: var(--gutter);
  font-family: var(--font-display);
  font-stretch: 125%;
  font-weight: 700;
  font-size: clamp(2rem, 4.5vw, 3.75rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--fg);
}
.lens-count__of {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.4em;
  letter-spacing: 0.1em;
  color: var(--fg-3);
  margin-left: 0.4rem;
}

.lens-aim {
  position: absolute;
  top: clamp(1.25rem, 3vw, 2.5rem);
  right: var(--gutter);
  display: grid;
  justify-items: center;
  gap: 0.5rem;
}
.lens-reticle {
  width: clamp(56px, 8vw, 84px);
  height: clamp(56px, 8vw, 84px);
  fill: none;
  stroke: var(--line-2);
  stroke-width: 1.5;
}
.lens-reticle circle { fill: var(--fg); stroke: none; }
.lens-hint {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-3);
}

.lens-tele {
  position: absolute;
  bottom: clamp(1.25rem, 3vw, 2.5rem);
  right: var(--gutter);
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.75rem 1.5rem;
}
.lens-tele__cell { display: inline-flex; align-items: baseline; gap: 0.4rem; }
.lens-tele__k {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.lens-tele [data-lens-t] {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-variant-numeric: tabular-nums;
  color: var(--fg);
}
.lens-tele__u {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--fg-3);
}

.lens-legend {
  position: absolute;
  bottom: clamp(1.25rem, 3vw, 2.5rem);
  left: var(--gutter);
  width: min(280px, 42vw);
  display: grid;
  gap: 0.5rem;
}
/* Without JS all legend items stack visibly; with JS only the active one shows. */
.lens--js .lens-legend__item { display: none; }
.lens--js .lens-legend__item.is-on { display: block; }
.lens-legend__title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-2);
}
.lens-legend__rec { display: inline-flex; align-items: center; gap: 0.5rem; color: var(--accent); }
.lens-legend__rec [data-lens-rec] { animation: lens-rec 1.4s steps(2, start) infinite; }
@keyframes lens-rec { 50% { opacity: 0.2; } }
.lens-legend [data-lens-tc],
.lens-legend [data-lens-density] { font-variant-numeric: tabular-nums; }
.lens-legend__meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--fg-3);
}
.lens-legend__bar { height: 6px; border-radius: var(--r-xs); }
.lens-legend__bar--survey { background: linear-gradient(90deg, #0a1a22, var(--s-survey)); }
.lens-legend__bar--thermal { background: linear-gradient(90deg, #000008, #2b0561, #8f088a, #e33a2b, #ff8f05, #ffde42, #fffeeb); }
.lens-legend__bar--lidar { background: linear-gradient(90deg, #10180a, var(--s-lidar)); }
.lens-legend__ticks {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--fg-3);
}

/* ---------- Mode switcher ---------- */
.lens-switch { max-width: 46rem; margin-bottom: clamp(1.5rem, 3vw, 2.5rem); }
.lens-tabs { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.lens-tab__idx { opacity: 0.55; margin-right: 0.35rem; }
.lens-rail {
  height: 2px;
  margin-top: 1rem;
  background: var(--line);
  border-radius: 2px;
  overflow: hidden;
}
.lens-rail__fill {
  display: block;
  height: 100%;
  width: 25%;
  background: var(--accent);
  transition: width var(--t) var(--ease-out);
}
.lens-cue {
  margin-top: 0.75rem;
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.lens-cue__keys { opacity: 0.6; }

/* ---------- Panels ---------- */
.lens-panels {
  position: relative;
  max-width: 46rem;
  padding: clamp(1.25rem, 3vw, 2.5rem);
  background: rgba(var(--bg-rgb), 0.72);
  border: 1px solid var(--line);
}
/* Without JS every panel stacks visibly; with JS only the active one shows. */
.lens--js .lens-panel { display: none; }
.lens--js .lens-panel--on { display: block; }

.lens-panel { display: grid; gap: 1rem; }
.lens-panel__tag { color: var(--fg-3); }
.lens-panel__sees { color: var(--fg-2); max-width: 46ch; }
.lens-panel__more {
  display: grid;
  gap: 1.75rem;
  margin-top: 0.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}
.lens--js.is-collapsed .lens-panel__more { display: none; }
.lens-panel__h { color: var(--fg-3); margin-bottom: 0.6rem; }
.lens-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1.25rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--line);
  font-size: var(--fs-small);
  color: var(--fg-2);
}
.lens-fmt {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--fg-3);
  flex: none;
}
.lens-specs .kv:last-child { border-bottom: 0; }
.lens-panel__best {
  display: flex;
  gap: 1rem;
  align-items: baseline;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: var(--fs-small);
  color: var(--fg-2);
}
.lens-panel__best .label { flex: none; color: var(--fg-3); }

/* "Deliverables and specs" toggle (one button governs all panels) */
.lens-more {
  width: 100%;
  margin-top: 1.25rem;
  padding: 0.95rem 0 0;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-2);
  transition: color var(--t-fast);
}
.lens-more:hover { color: var(--fg); }
.lens-more__icon { position: relative; width: 14px; height: 14px; flex: none; }
.lens-more__icon::before,
.lens-more__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 14px;
  height: 1.5px;
  background: currentColor;
  transform: translateY(-50%);
  transition: transform var(--t) var(--ease-out);
}
.lens-more__icon::after { transform: translateY(-50%) rotate(90deg); }
.lens-more[aria-expanded="true"] .lens-more__icon::after { transform: translateY(-50%) rotate(0deg); }

@media (min-width: 600px) {
  .lens-panel__more { grid-template-columns: 1fr 1fr; }
}

/* ---------- Pinned stage layout: everything fits one viewport ----------
   Mobile: head + tabs on top, panel as a bottom sheet, the world in between.
   ≥ 900 px: head + tabs top-left, panel in a right column, centre kept clear for the drone. */
.lens-head .h1 { font-size: clamp(2rem, 3.7vw, 3.75rem); }
.lens-panel__name { font-size: clamp(1.75rem, 2.6vw, 2.5rem); }
.lens--live .lens-ui {
  align-self: stretch;
  display: flex;
  flex-direction: column;
  min-height: 100svh;
  padding-block: calc(var(--nav-h) + 1rem) 1.25rem;
}
.lens--live .lens-head { margin-bottom: 1.25rem; }
.lens--live .lens-switch { margin-bottom: 1rem; }
.lens--live .lens-panels {
  margin-top: auto;
  max-height: calc(100svh - var(--nav-h) - 3rem);
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
}
.lens-count { top: calc(var(--nav-h) + 1rem); left: auto; right: var(--gutter); }
.lens-aim { top: auto; right: auto; left: 50%; bottom: 4.75rem; transform: translateX(-50%); }
.lens-tele { right: auto; left: 50%; transform: translateX(-50%); justify-content: center; white-space: nowrap; }

@media (max-width: 1199px) {
  .lens-aim, .lens-legend, .lens-tele { display: none; }
  .lens--live .lens-panels { max-width: 34rem; }
}
@media (max-width: 899px) {
  .lens--live .lens-head__lead,
  .lens--live .lens-cue,
  .lens-count { display: none; }
  .lens--live .lens-tabs { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; margin-inline: calc(-1 * var(--gutter)); padding-inline: var(--gutter); }
  .lens--live .lens-tabs::-webkit-scrollbar { display: none; }
  .lens--live .lens-tab { flex: none; }
  .lens--live .lens-panels { padding: 1.1rem 1.15rem; background: rgba(var(--bg-rgb), 0.86); }
  .lens--live .lens-panel { gap: 0.6rem; }
}

@media (min-width: 1200px) {
  .lens--live .lens-ui {
    display: grid;
    grid-template-columns: minmax(0, 30rem) minmax(0, 1fr) minmax(0, 25rem);
    grid-template-rows: auto auto minmax(0, 1fr);
    column-gap: var(--gap);
    align-items: start;
    padding-bottom: clamp(4.5rem, 9vh, 6.5rem);
  }
  .lens--live .lens-head { grid-column: 1; grid-row: 1; }
  .lens--live .lens-switch { grid-column: 1; grid-row: 2; }
  .lens--live .lens-panels {
    grid-column: 3;
    grid-row: 1 / span 3;
    align-self: end;
    margin-top: 0;
    max-height: calc(100svh - var(--nav-h) - 9rem);
  }
}

/* ============================ PROCESS ROUTE ============================ */
.proc-route { position: relative; margin-top: clamp(2rem, 5vw, 4rem); }

.proc-path {
  position: absolute;
  left: 0;
  top: 0;
  width: 3.5rem;
  height: 100%;
  z-index: 0;
  overflow: visible;
}
.proc-path__track {
  fill: none;
  stroke: var(--line);
  stroke-width: 1.5;
  vector-effect: non-scaling-stroke;
}
.proc-path__line {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2;
  stroke-linecap: round;
  vector-effect: non-scaling-stroke;
  transition: stroke-dashoffset 0.08s linear;
}
.proc-path__ring {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.5;
  opacity: 0.45;
  vector-effect: non-scaling-stroke;
}
.proc-path__dot { fill: var(--accent); }

.proc-steps {
  position: relative;
  z-index: 1;
  list-style: none;
  margin: 0 0 0 4.5rem;
  display: grid;
  gap: clamp(2.75rem, 7vw, 5.5rem);
}
.proc-step { position: relative; }
.proc-wp {
  position: absolute;
  left: -4.5rem;
  top: 1.6rem;
  width: 3.5rem;
  display: grid;
  justify-items: center;
  gap: 0.4rem;
}
.proc-wp__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--bg);
  border: 1.5px solid var(--line-2);
  transition: background var(--t-fast), border-color var(--t-fast), transform var(--t-fast);
}
.proc-wp__tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--fg-3);
}
.proc-step.is-active .proc-wp__dot {
  background: var(--accent);
  border-color: var(--accent);
  transform: scale(1.3);
}
.proc-step.is-done .proc-wp__dot { background: var(--accent); border-color: var(--accent); }

.proc-card {
  padding: clamp(1.25rem, 3vw, 2.25rem);
  background: rgba(var(--bg-rgb), 0.72);
  border: 1px solid var(--line);
  transition: border-color var(--t) var(--ease-out);
}
.proc-step.is-active .proc-card { border-color: var(--accent); }
.proc-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1rem;
  color: var(--fg-3);
}
.proc-card__wp { margin-left: 0.5rem; }
.proc-card__time { color: var(--fg-3); text-align: right; }
.proc-card__title { margin-bottom: 0.75rem; }
.proc-card__text { color: var(--fg-2); font-size: var(--fs-small); margin-bottom: 1.25rem; max-width: 62ch; }
.proc-roles { display: grid; gap: 0; }
.proc-kv .kv__v {
  text-align: left;
  font-family: var(--font-body);
  font-size: var(--fs-small);
  color: var(--fg-2);
  max-width: 46ch;
}

.proc-end {
  margin-top: clamp(3rem, 8vw, 6rem);
  display: grid;
  gap: 1.5rem;
  justify-items: start;
}
.proc-end__line {
  font-family: var(--font-display);
  font-stretch: 125%;
  font-weight: 700;
  font-size: clamp(1.5rem, 3.4vw, 2.75rem);
  letter-spacing: -0.02em;
  text-transform: uppercase;
  line-height: 1;
  max-width: 18ch;
}

@media (min-width: 900px) {
  .proc-path { width: 4.5rem; }
  .proc-steps { margin-left: 6rem; }
  .proc-wp { left: -6rem; width: 4.5rem; }
}

/* Reduced motion: no scroll-linked drawing — line and drone sit at their final state,
   active/done classes still applied once by lens.js. */
@media (prefers-reduced-motion: reduce) {
  .proc-path__line { transition: none; }
  .lens-legend__rec [data-lens-rec] { animation: none; }
}