/* ===== project write-ups on the navy page =====
   Same building blocks as the steering robot page (genauto.css: .ga-sec,
   .ga-h2, .ga-fig, .ga-arrow, .ga-calc, .ga-nav ...), but without the white
   sheet: everything sits on --dark-primary. Load after genauto.css. */

.ga-night {
  --ga-ink: var(--light-primary);
  --ga-ink-soft: rgba(240, 240, 240, 0.58);
  --ga-panel: var(--dark-accent);
  --ga-rule: rgba(240, 240, 240, 0.12);
  --ga-accent: var(--light-accent);
  margin: 2.2rem 0 4rem 0;
}

/* page-styles.css sets overflow-x: hidden on every element; text never scrolls */
.ga-night h2, .ga-night h3, .ga-night h4, .ga-night p, .ga-night li,
.ga-night ul, .ga-night ol, .ga-night figcaption, .ga-night span,
.ga-night strong, .ga-night em, .ga-night a, .ga-night figure { overflow: visible !important; }

.ga-night > .ga-sec:first-child { margin-top: 0; }
.ga-night .ga-sec { margin-top: 3.4rem; }

.ga-night p,
.ga-night li {
  font-size: 0.98rem;
  font-weight: 300 !important;
  line-height: 1.7;
  text-align: left;
  color: rgba(240, 240, 240, 0.9);
}
.ga-night p { margin: 0 0 0.8rem 0; max-width: 72ch; }
.ga-night p:last-child { margin-bottom: 0; }
.ga-night strong { font-weight: 600 !important; color: var(--light-primary); }
.ga-night em { font-style: italic; }
.ga-night .ga-lead { font-size: 1.1rem !important; line-height: 1.6 !important; max-width: 70ch !important; color: var(--light-primary); }
.ga-night ul { margin: 0 0 0.8rem 0; padding-left: 1.15rem; }
.ga-night li { margin-bottom: 0.3rem; }

.ga-night a { color: var(--light-primary); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
.ga-night a:hover { text-decoration-thickness: 2px; }

.ga-night .ga-label.problem { color: var(--ga-accent); }
.ga-night .ga-label.solution { color: var(--light-primary); }
.ga-night .ga-h2 small { color: var(--ga-ink-soft); }

/* the in-page section nav sits on the right like the steering robot page;
   on the navy page it needs a slightly firmer backing */
.ga-night ~ .ga-nav, .ga-nav { background: rgba(11, 33, 53, 0.8); }


/* ---------- media ---------- */

/* a grid of photos / videos. --cols sets the columns, each tile's --ar its shape */
.pj-grid {
  display: grid;
  grid-template-columns: repeat(var(--cols, 3), minmax(0, 1fr));
  gap: var(--g, 0.6rem);
  margin: 1.2rem 0;
}
/* a single clip on its own, larger, centred */
.pj-grid.one { --cols: 1 !important; max-width: 760px; margin-left: auto; margin-right: auto; }
.pj-tile {
  position: relative;
  margin: 0;
  min-width: 0;
  overflow: hidden !important;
  background: var(--dark-accent);
  border-radius: 6px;
}
.pj-tile.span2 { grid-column: span 2; }
.pj-tile.tall { grid-row: span 2; }
.pj-tile > img,
.pj-tile > video {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: var(--ar, 4 / 3);
  object-fit: cover;
}
.pj-tile.tall > img, .pj-tile.tall > video { aspect-ratio: auto; }
.pj-tile > img[data-zoom] { cursor: zoom-in; }
/* CAD renders on white: show the whole render on a white tile */
.pj-tile.light { background: #ffffff; }
.pj-tile.light > img { object-fit: contain; }
.pj-tile figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  transform: none;
  width: auto !important;
  white-space: normal !important;
  z-index: 1;
  margin: 0;
  padding: 1.4rem 0.7rem 0.5rem 0.7rem;
  font-size: 0.75rem;
  font-weight: 400;
  line-height: 1.35;
  text-align: left;
  color: rgba(240, 240, 240, 0.92);
  background: linear-gradient(to bottom, rgba(5, 18, 32, 0), rgba(5, 18, 32, 0.85));
  pointer-events: none;
}

/* a single wide figure with a caption below (simulations, diagrams) */
.pj-wide { margin: 1.2rem 0; }
.pj-wide > video, .pj-wide > img, .pj-wide > svg, .pj-wide > canvas {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 6px;
}
.pj-wide figcaption, .ga-night .pj-cap {
  position: static;
  transform: none;
  width: auto !important;
  white-space: normal !important;
  margin: 0.5rem auto 0 auto;
  max-width: 70ch;
  font-size: 0.8rem;
  line-height: 1.45;
  text-align: center !important;
  color: var(--ga-ink-soft);
}

/* text beside a figure */
.pj-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 2rem;
  align-items: center;
  margin: 1.2rem 0;
}
.pj-split.fig-wide { grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); }
.pj-split > div > p:last-child { margin-bottom: 0; }

/* text with a column of two figures beside it */
.pj-split.pj-side { grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr); align-items: start; }
.pj-stack { display: flex; flex-direction: column; gap: 0.6rem; }
.pj-stack > .pj-tile { margin: 0; }

/* a short list of facts (cost, time, materials) */
.pj-facts {
  display: grid;
  grid-template-columns: repeat(var(--cols, 3), minmax(0, 1fr));
  gap: 0.6rem;
  margin: 1.2rem 0;
}
.pj-fact {
  padding: 0.9rem 1rem;
  background: var(--dark-accent);
  border-radius: 6px;
}
.pj-fact b {
  display: block;
  font-size: 1.5rem;
  font-weight: 600 !important;
  line-height: 1.2;
  color: var(--light-primary);
}
.pj-fact span {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.78rem;
  line-height: 1.4;
  color: var(--ga-ink-soft);
}

/* embedded site (Verso docs) */
.pj-embed {
  margin: 1.2rem 0;
  border-radius: 8px;
  overflow: hidden !important;
  background: #fff;
}
.pj-embed iframe { display: block; width: 100%; height: 640px; border: 0; }
.pj-embed-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem 0.9rem;
  background: var(--dark-secondary);
  font-size: 0.8rem;
}
.pj-embed-bar a { color: var(--light-primary); }

/* YouTube embed */
.pj-video { margin: 1.2rem 0; border-radius: 8px; overflow: hidden !important; background: #000; aspect-ratio: 16 / 9; }
.pj-video iframe { display: block; width: 100%; height: 100%; border: 0; }

/* links to related project pages */
.pj-links { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1rem 0 0 0; }
.pj-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.9rem;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-decoration: none;
  border: 1.5px solid rgba(240, 240, 240, 0.35);
  border-radius: 5px;
}
.pj-links a:hover { border-color: var(--light-primary); background: var(--dark-secondary); }


/* ---------- math on the navy page: plain equations, no panel ---------- */
.ga-night .ga-calc { background: none; border-left: none; padding: 0 0 0 1.4rem; margin: 1rem 0; font-size: 1.08rem; }
.ga-night .ga-calc > div { overflow: visible !important; }
.ga-night .ga-math, .ga-night .ga-math * { color: inherit; }
.ga-night .ga-spec td { white-space: normal; vertical-align: top; }
.ga-night .ga-spec td:first-child, .ga-night .ga-spec td:last-child { white-space: nowrap; }
.ga-night .ga-spec td.ga-math { font-size: 1.1rem; }
.ga-night .ga-box { width: 100%; }
.ga-night .pj-split .ga-h3 { margin-top: 0; }

/* the codepen embeds are dark themed */
.pj-embed.dark { background: var(--dark-accent); }
.pj-embed.dark iframe { height: 620px; }

/* ---------- cycloidal drive simulation ---------- */
.cyc-sim {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: 1.6rem;
  align-items: center;
  margin: 1.4rem 0;
  padding: 1.2rem;
  background: var(--dark-accent);
  border-radius: 8px;
}
.cyc-sim canvas { display: block; width: 100%; aspect-ratio: 1; }
.cyc-panel { display: flex; flex-direction: column; gap: 0.55rem; overflow: visible !important; }
.cyc-panel * { overflow: visible !important; }
.cyc-row { display: grid; grid-template-columns: 7.5rem auto 1fr; align-items: baseline; gap: 0.6rem; font-size: 0.85rem; }
.cyc-key { color: var(--ga-ink-soft); }
.cyc-val { font-size: 1.25rem; font-weight: 600; font-variant-numeric: tabular-nums; min-width: 4.5ch; }
.cyc-unit { font-size: 0.78rem; color: var(--ga-ink-soft); }
.cyc-ctl { display: flex; flex-direction: column; gap: 0.35rem; margin-top: 0.6rem; font-size: 0.85rem; color: var(--ga-ink-soft); }
.cyc-ctl b { color: var(--light-primary); font-weight: 600; }
.cyc-ctl input { width: 100%; accent-color: var(--light-accent); }
.cyc-panel button {
  align-self: flex-start;
  margin-top: 0.6rem;
  padding: 0.45rem 1.1rem;
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--light-primary);
  background: transparent;
  border: 1.5px solid rgba(240, 240, 240, 0.4);
  border-radius: 5px;
  cursor: pointer;
}
.cyc-panel button:hover { border-color: var(--light-primary); background: var(--dark-secondary); }

/* ---------- phones ---------- */

@media (max-width: 1000px) {
  .ga-night { margin: 0.6rem 0 2.5rem 0; }
  .ga-night .ga-sec { margin-top: 2rem; }
  .ga-night p, .ga-night li { font-size: 0.86rem !important; line-height: 1.6 !important; }
  .ga-night p { margin: 0 0 0.6rem 0 !important; }
  .ga-night .ga-lead { font-size: 0.93rem !important; }

  .pj-grid { --cols: 2 !important; gap: 0.4rem; margin: 0.8rem 0; }
  .pj-tile.span2 { grid-column: span 2; }
  .pj-grid.row3 { --cols: 3 !important; gap: 0.3rem; }
  .pj-tile figcaption { font-size: 0.62rem !important; padding: 1rem 0.5rem 0.35rem 0.5rem; }
  .pj-split, .pj-split.fig-wide, .pj-split.pj-side { grid-template-columns: minmax(0, 1fr); gap: 0.8rem; }
  .pj-stack { flex-direction: row; gap: 0.4rem; }
  .pj-stack > .pj-tile { flex: 1 1 0; min-width: 0; }
  .pj-facts { --cols: 2 !important; gap: 0.4rem; }
  .pj-fact { padding: 0.7rem 0.75rem; }
  .pj-fact b { font-size: 1.15rem; }
  .pj-fact span { font-size: 0.68rem; }
  .pj-wide figcaption, .ga-night .pj-cap { font-size: 0.68rem !important; }

  .cyc-sim { grid-template-columns: minmax(0, 1fr); gap: 0.8rem; padding: 0.8rem; }
  .cyc-row { grid-template-columns: 6rem auto 1fr; font-size: 0.78rem; }
  .cyc-val { font-size: 1.05rem; }
  .ga-night .ga-spec td.ga-math { font-size: 0.95rem; }
  .pj-embed.dark iframe { height: 70svh; }

  /* the docs embed gets the full screen width so the site isn't squeezed */
  .pj-embed { width: 100vw; margin-left: calc(50% - 50vw); border-radius: 0; }
  .pj-embed iframe { height: 78svh; }
}

/* media right under the meta strip, before the first section */
.pj-top { width: var(--ga-col); margin: 1.6rem auto 0 auto; }
.pj-top .pj-grid { margin: 0; }
@media (max-width: 1000px) { .pj-top { margin-top: 0.9rem; } }

/* ---------- motion platform: sketches and the comparison table ---------- */
.pf-fig { margin: 0.6rem auto 1.4rem auto; max-width: 700px; }
.pf-fig .pf-sketch { display: block; width: 100%; height: auto; overflow: visible; }
.pf-fig.small { margin: 0; max-width: none; }
.pf-fig figcaption { position: static; transform: none; white-space: normal !important; width: auto !important;
  margin: 0.35rem 0 0 0; text-align: center; font-size: 0.78rem; color: var(--ga-ink-soft); }
.pf-sketch text { font-weight: 500; }
.pf-sim-row { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.75fr) minmax(0, 1fr); gap: 1.6rem; align-items: center; margin: 1.2rem 0; }
.pf-text { margin-top: 1.2rem; }
.pf-table { width: 100%; border-collapse: collapse; margin: 1.4rem 0 0.6rem 0; font-size: 0.86rem; }
.pf-table th, .pf-table td { padding: 0.5rem 0.8rem 0.5rem 0; text-align: left; vertical-align: top; border-bottom: 1px solid var(--ga-rule); font-weight: 300; color: rgba(240, 240, 240, 0.9); overflow: visible !important; }
.pf-table thead th { font-weight: 600; color: var(--light-primary); border-bottom: 1.5px solid rgba(240, 240, 240, 0.35); }
.pf-table thead th span { display: block; font-size: 0.72rem; font-weight: 300; color: var(--ga-ink-soft); margin-top: 0.15rem; }
.pf-table tbody th { font-weight: 500; color: var(--ga-ink-soft); white-space: nowrap; }
.pf-table td:nth-child(2) { color: var(--light-primary); }

@media (max-width: 1000px) {
  .pf-sim-row { grid-template-columns: minmax(0, 1fr); gap: 1rem; justify-items: center; }
  .pf-sim-row > div { justify-self: stretch; }
  .pf-sim-row .pf-fig.small { width: 100%; max-width: 330px; }
  .pf-fig { margin: 0.2rem -0.6rem 1rem -0.6rem; }
  .pf-table { font-size: 0.72rem; }
  .pf-table th, .pf-table td { padding: 0.4rem 0.5rem 0.4rem 0; }
  .pf-table tbody th { white-space: normal; }
  .pf-fig figcaption { font-size: 0.66rem; }
}
/* page-styles.css forces Montserrat on everything with !important */
.pf-sketch text { font-family: Caveat, cursive !important; }
.pf-sketch text[style*="italic"] { font-family: "STIX Two Text", Georgia, serif !important; font-style: italic; }

/* the sim's three numbers side by side */
.cyc-readout { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.8rem; overflow: visible !important; }
.cyc-readout .cyc-row { display: flex; flex-direction: column; align-items: flex-start; gap: 0.1rem; }
.cyc-readout .cyc-val { min-width: 0; }
@media (max-width: 1000px) { .cyc-readout { gap: 0.5rem; } .cyc-readout .cyc-val { font-size: 0.95rem; } }

/* ---------- cycloidal actuator: exploded view beside its parts list ---------- */
.pj-split.cy-bom { grid-template-columns: minmax(0, 0.55fr) minmax(0, 1fr); align-items: center; }
.cy-bom .pj-tile.light > img { object-fit: contain; padding: 0.6rem; box-sizing: border-box; background: #fff; }
.cy-table { margin: 0 !important; }
.cy-table td:last-child, .cy-table th:last-child { text-align: right; padding-right: 0; }
.cy-table tbody th { width: 2.2rem; }
@media (max-width: 1000px) {
  .pj-split.cy-bom { grid-template-columns: minmax(0, 0.8fr) minmax(0, 1fr); gap: 0.8rem; }
  .cy-table th, .cy-table td { padding: 0.28rem 0.35rem 0.28rem 0 !important; }
}

/* ---------- braille display ---------- */
/* black-ink sketches and the table sit on white panels */
.pj-white { background: #ffffff; border-radius: 6px; padding: 1rem 1.2rem; margin: 1rem auto; box-sizing: border-box; }
.pj-white img { display: block; width: 100%; height: auto; margin: 0 auto; }
.pj-white + .pj-cap, .ga-night .pj-cap { display: block; width: 100%; max-width: none !important; margin: -0.5rem 0 1.2rem 0; text-align: center; font-size: 0.78rem; color: var(--ga-ink-soft); }
.br-sketches { display: grid; grid-template-columns: 1.4fr 0.6fr 1fr; gap: 1.2rem; align-items: end; }
.br-sketches figure { margin: 0; }
.br-sketches figcaption { position: static !important; transform: none !important; white-space: normal !important; width: auto !important;
  margin: 0.5rem 0 0 0; font-size: 0.72rem; line-height: 1.35; color: #3a3f45; text-align: center; }
.pj-white.narrow { max-width: 640px; }
.pj-code { background: #0b1826; border: 1px solid var(--ga-rule); border-radius: 6px; padding: 0.9rem 1rem; margin: 1rem 0;
  overflow-x: auto !important; font: 400 0.78rem/1.55 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; color: #d6dde6; white-space: pre; }
.pj-code, .pj-code * { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace !important; }
.pj-code * { overflow: visible !important; }
.pj-code .c { color: #6f8aa5; }
.pj-code .s { color: #9fd8a3; }
.pj-code .k { color: #ff8ea0; }
.br-cost { margin: 1rem 0; }
.br-cost td:last-child { text-align: right; white-space: nowrap; color: var(--light-primary); }
@media (max-width: 1000px) {
  .br-sketches { grid-template-columns: 1fr 1fr; }
  .br-sketches figure:first-child { grid-column: span 2; }
  .pj-white { padding: 0.7rem 0.8rem; }
  .pj-code { font-size: 0.66rem; padding: 0.7rem; }
}