:root {
  --navy: #1A194D;
  --orange: #F9A12C;
  --ink: #171614;
  --cream: #F7F5F1;
  --concrete: #D9DDE1;
  --charcoal: #242424;

  /* Shared motion system — see MOTION SYSTEM section below */
  --motion-fast: 280ms;
  --motion-standard: 650ms;
  --motion-slow: 850ms;
  --motion-stagger: 80ms;
  --motion-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
  overflow-x: hidden;
}

body {
  overflow-x: hidden;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

body { background-color: var(--cream); }

.eyebrow {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.nav-link {
  position: relative;
  padding: 6px 0;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--motion-fast) var(--motion-ease);
}
.nav-link:hover::after { transform: scaleX(1); }

.logo-nav {
  display: block;
  filter: brightness(0) saturate(100%) invert(15%) sepia(40%) saturate(700%) hue-rotate(217deg) brightness(0.9) contrast(1.1);
}

.stat-block {
  padding: 40px 8px;
}

.capability-item {
  padding: 28px 8px;
  border-bottom: 1px solid rgba(255,255,255,0.15);
  border-right: 1px solid rgba(255,255,255,0.15);
}
@media (min-width: 640px) {
  .capability-item:nth-child(2n) { border-right: none; }
}
@media (min-width: 1024px) {
  .capability-item:nth-child(2n) { border-right: 1px solid rgba(255,255,255,0.15); }
  .capability-item:last-child { border-right: none; }
}

.filter-btn {
  font-size: 13.5px;
  font-weight: 600;
  color: rgba(23,22,20,0.55);
  padding: 9px 18px;
  border: 1px solid rgba(0,0,0,0.12);
  transition: color var(--motion-fast) var(--motion-ease),
              border-color var(--motion-fast) var(--motion-ease),
              background-color var(--motion-fast) var(--motion-ease);
}
.filter-btn:hover { border-color: var(--navy); color: var(--navy); }
.filter-btn.is-active {
  background: var(--navy);
  border-color: var(--navy);
  color: #fff;
}

.project-card {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--navy);
}
.project-card img {
  transition: transform var(--motion-standard) var(--motion-ease);
}
.project-card:hover img {
  transform: scale(1.03);
}
.project-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  background: linear-gradient(to top, rgba(26,25,77,0.92) 0%, rgba(26,25,77,0.15) 55%, rgba(26,25,77,0) 100%);
}

.form-field {
  border: 1px solid rgba(0,0,0,0.15);
  padding: 17px 18px;
  font-size: 14.5px;
  background: var(--cream);
  color: var(--charcoal);
  border-radius: 2px;
}
.form-field:focus {
  outline: none;
  border-color: var(--orange);
  background: #fff;
}
.form-field::placeholder { color: rgba(36,36,36,0.45); }

.footer-heading {
  color: rgba(255,255,255,0.9);
  font-weight: 700;
  font-size: 13.5px;
  letter-spacing: 0.04em;
  margin-bottom: 18px;
  position: relative;
  padding-left: 14px;
}
.footer-heading::before {
  content: "";
  position: absolute;
  left: 0; top: 2px; bottom: 2px;
  width: 2px;
  background: var(--orange);
}

/* visible keyboard focus */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

/* ============ HOMEPAGE ENHANCEMENT LAYER ============ */

/* Sticky header shrink-on-scroll */
#site-header .header-inner {
  height: 5rem;
  transition: height var(--motion-fast) var(--motion-ease);
}
#site-header.is-scrolled .header-inner {
  height: 4.1rem;
}
#site-header.is-scrolled {
  box-shadow: 0 1px 0 rgba(0,0,0,0.06);
}

/* Squared, technical buttons with an animating arrow */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 14.5px;
  padding: 15px 26px;
  border-radius: 3px;
  transition: background-color var(--motion-fast) var(--motion-ease),
              color var(--motion-fast) var(--motion-ease),
              border-color var(--motion-fast) var(--motion-ease);
}
.btn svg { transition: transform var(--motion-fast) var(--motion-ease); }
.btn:hover svg { transform: translateX(4px); }
.btn-primary {
  background: var(--orange);
  color: var(--navy);
}
.btn-primary:hover { background: #fff; }
.btn-outline {
  border: 1px solid rgba(255,255,255,0.4);
  color: #fff;
}
.btn-outline:hover { background: #fff; color: var(--navy); border-color: #fff; }

/* Stat icons */
.stat-icon {
  width: 26px;
  height: 26px;
  color: var(--orange);
  margin-bottom: 14px;
}

/* Why Systematic hover accent */
.capability-item {
  position: relative;
}
.capability-item::after {
  content: "";
  position: absolute;
  left: 0; bottom: -1px;
  width: 100%;
  height: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--motion-fast) var(--motion-ease);
}
.capability-item:hover::after { transform: scaleX(1); }

/* Electromechanical capability rows */
.mep-row {
  cursor: default;
}
.mep-row .mep-label { transition: color var(--motion-fast) var(--motion-ease); }
.mep-row .mep-line {
  width: 22px;
  height: 1px;
  background: rgba(255,255,255,0.3);
  transition: width var(--motion-fast) var(--motion-ease), background var(--motion-fast) var(--motion-ease);
}
.mep-row:hover .mep-label { color: var(--orange); }
.mep-row:hover .mep-line { width: 40px; background: var(--orange); }

/* Oversized background quotation mark for Vision / Mission */
.quote-mark {
  position: absolute;
  top: -0.35em;
  left: -0.06em;
  font-family: 'Lora', serif;
  font-size: 180px;
  line-height: 1;
  color: var(--navy);
  opacity: 0.06;
  pointer-events: none;
  user-select: none;
}
/* Variant for use on navy backgrounds (e.g. About page Vision/Mission) */
.quote-mark--light {
  color: #FFFFFF;
  opacity: 0.08;
}

/* ============ ABOUT PAGE ============ */

/* Sub-navigation bar under the About hero: horizontally scrollable on
   small screens, with a nav-link-style underline on hover/active. */
.about-subnav {
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.about-subnav::-webkit-scrollbar { display: none; }

.about-subnav-link {
  position: relative;
  padding: 6px 0;
  transition: color var(--motion-fast) var(--motion-ease);
}
.about-subnav-link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--motion-fast) var(--motion-ease);
}
.about-subnav-link:hover {
  color: #fff;
}
.about-subnav-link:hover::after {
  transform: scaleX(1);
}

/* ============ PROJECT DETAIL LIGHTBOX ============ */
/* Shared by all project-*.html pages via js/main.js. */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(10, 9, 30, 0.96);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease;
}
.lightbox.is-open {
  opacity: 1;
  visibility: visible;
}
.lightbox__img {
  display: block;
  max-width: 90vw;
  max-height: 82vh;
  width: auto;
  height: auto;
  object-fit: contain;
}
.lightbox__close,
.lightbox__prev,
.lightbox__next {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease;
}
.lightbox__close:hover,
.lightbox__prev:hover,
.lightbox__next:hover {
  background: rgba(249, 161, 44, 0.15);
  border-color: var(--orange);
}
.lightbox__close {
  top: 20px;
  right: 20px;
  width: 42px;
  height: 42px;
}
.lightbox__prev,
.lightbox__next {
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
}
.lightbox__prev { left: 16px; }
.lightbox__next { right: 16px; }
.lightbox__count {
  position: absolute;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.55);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  font-weight: 600;
}
@media (max-width: 640px) {
  .lightbox__prev, .lightbox__next { width: 38px; height: 38px; }
  .lightbox__close { width: 36px; height: 36px; top: 12px; right: 12px; }
}

/* Gallery tiles that open the lightbox */
.project-gallery__item {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  overflow: hidden;
  cursor: zoom-in;
  background: var(--navy);
  padding: 0;
  border: 0;
  text-align: left;
}
.project-gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--motion-standard) var(--motion-ease);
}
.project-gallery__item:hover img {
  transform: scale(1.03);
}
.project-gallery__item .project-gallery__zoom {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(26, 25, 77, 0);
  opacity: 0;
  transition: opacity var(--motion-fast) var(--motion-ease), background var(--motion-fast) var(--motion-ease);
}
.project-gallery__item:hover .project-gallery__zoom {
  opacity: 1;
  background: rgba(26, 25, 77, 0.18);
}

/* ============ MOTION SYSTEM ============ */
/* Shared entrance/reveal system used across the entire site.
   Fail-safe by design: every element below is fully visible by default.
   Only once JS confirms it can run (html.reveal-ready, added synchronously
   by main.js) do elements start hidden pending IntersectionObserver — so a
   blocked/broken script can never leave content invisible. */

.reveal,
.reveal-heading,
.reveal-image,
.reveal-left,
.reveal-right,
.reveal-fade {
  opacity: 1;
  transform: none;
}

/* Pure fade, no movement — used for hero background layers only. */
.reveal-fade {
  transition: opacity var(--motion-slow) var(--motion-ease);
}
html.reveal-ready .reveal-fade:not(.is-visible) {
  opacity: 0;
}

.reveal,
.reveal-left,
.reveal-right {
  transition: opacity var(--motion-standard) var(--motion-ease),
              transform var(--motion-standard) var(--motion-ease);
}
.reveal-heading,
.reveal-image {
  transition: opacity var(--motion-slow) var(--motion-ease),
              transform var(--motion-slow) var(--motion-ease);
}

html.reveal-ready .reveal:not(.is-visible) {
  opacity: 0;
  transform: translateY(24px);
}
html.reveal-ready .reveal-heading:not(.is-visible) {
  opacity: 0;
  transform: translateY(20px);
}
html.reveal-ready .reveal-image:not(.is-visible) {
  opacity: 0;
  transform: scale(1.02);
}
html.reveal-ready .reveal-left:not(.is-visible) {
  opacity: 0;
  transform: translateX(-20px);
}
html.reveal-ready .reveal-right:not(.is-visible) {
  opacity: 0;
  transform: translateX(20px);
}

/* Staggered groups: the container itself never fades — only its direct
   reveal children do, with an incremental transition-delay set by JS. */
.reveal-stagger > .reveal,
.reveal-stagger > .reveal-heading,
.reveal-stagger > .reveal-image,
.reveal-stagger > .reveal-left,
.reveal-stagger > .reveal-right {
  will-change: opacity, transform;
}

/* A thin orange rule that expands from the left, used for eyebrow/section
   underlines and small technical dividers. */
.reveal-line {
  transform: scaleX(1);
  transform-origin: left;
  transition: transform var(--motion-standard) var(--motion-ease);
}
html.reveal-ready .reveal-line:not(.is-visible) {
  transform: scaleX(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-heading,
  .reveal-image,
  .reveal-left,
  .reveal-right,
  .reveal-line,
  .reveal-fade {
    opacity: 1 !important;
    transform: none !important;
  }
}