:root {
  --color-deep-blue: #003B8E;
  --color-royal-blue: #0A58CA;
  --color-bright-green: #65B32E;
  --color-dark-green: #3F7D20;
  --color-white: #FFFFFF;
  --color-light-grey: #F5F7FA;
  --color-ink: #102033;
  --color-muted: #5C6B7A;
  --color-border: #DCE5EF;
  --shadow-soft: 0 16px 36px rgba(0, 38, 89, 0.12);
  --shadow-header: 0 10px 28px rgba(0, 36, 84, 0.12);
  --radius-sm: 8px;
  --radius-md: 14px;
  --header-height: 80px;
  --container: 1160px;
  --font-main: Arial, Helvetica, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
}

body {
  margin: 0;
  background: var(--color-white);
  color: var(--color-ink);
  font-family: var(--font-main);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
}

ul {
  margin: 0;
  padding: 0;
}

.container {
  width: min(100% - 32px, var(--container));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  transform: translateY(-140%);
  background: var(--color-deep-blue);
  color: var(--color-white);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: fixed;
  top: 14px;
  left: 0;
  right: 0;
  z-index: 100;
  pointer-events: none;
}

.header__inner {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.94), rgba(255, 255, 255, 0.84)),
    url("../images/header-background.jpg") center 42% / cover no-repeat;
  border: 1px solid rgba(220, 229, 239, 0.86);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-header);
  padding: 12px 14px;
  pointer-events: auto;
  backdrop-filter: saturate(160%) blur(14px);
}

.site-header.is-scrolled .header__inner {
  box-shadow: 0 12px 30px rgba(0, 36, 84, 0.18);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand__mark {
  width: 56px;
  height: 56px;
  flex: 0 0 56px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border-radius: var(--radius-sm);
  background: var(--color-white);
}

.brand__mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.brand__text {
  display: grid;
  line-height: 1.1;
  min-width: 0;
  max-width: clamp(96px, 32vw, 210px);
}

.brand__text strong {
  color: var(--color-deep-blue);
  font-size: clamp(0.95rem, 2.8vw, 1.2rem);
  letter-spacing: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand__text small {
  color: var(--color-muted);
  font-size: 0.75rem;
}

.site-header .brand__text {
  display: none;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

.header__phone {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  color: var(--color-deep-blue);
  font-size: 0.78rem;
  font-weight: 900;
  white-space: nowrap;
}

.header__cta {
  display: inline-flex;
  min-height: 38px;
  padding: 8px 10px;
  font-size: 0.72rem;
}

.menu-toggle {
  width: 48px;
  height: 48px;
  display: inline-grid;
  place-content: center;
  gap: 5px;
  border: 0;
  border-radius: var(--radius-sm);
  background: var(--color-deep-blue);
  color: var(--color-white);
  cursor: pointer;
}

.menu-toggle span {
  width: 22px;
  height: 2px;
  display: block;
  border-radius: 999px;
  background: currentColor;
  transition: transform 180ms ease, opacity 180ms ease;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-nav {
  pointer-events: auto;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  visibility: hidden;
  transition: max-height 260ms ease, opacity 220ms ease, padding-top 260ms ease, visibility 0s linear 260ms;
}

.site-nav.is-open {
  max-height: 360px;
  opacity: 1;
  visibility: visible;
  padding-top: 10px;
  transition-delay: 0s;
}

.site-nav .container {
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.9)),
    url("../images/header-background.jpg") center 42% / cover no-repeat;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-header);
  padding: 10px;
}

.site-nav ul {
  list-style: none;
  display: grid;
  gap: 4px;
}

.site-nav a {
  display: block;
  border-radius: var(--radius-sm);
  color: var(--color-ink);
  font-weight: 700;
  padding: 12px 14px;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.site-nav a:is(:hover, :focus-visible),
.site-nav a.is-active {
  background: var(--color-light-grey);
  color: var(--color-deep-blue);
}

.btn {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  font-weight: 800;
  line-height: 1;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease, border-color 180ms ease;
}

.btn:is(:hover, :focus-visible) {
  transform: translateY(-2px);
}

.btn--small {
  min-height: 42px;
  padding: 10px 14px;
}

.btn--primary {
  background: var(--color-bright-green);
  color: var(--color-white);
  box-shadow: 0 12px 22px rgba(63, 125, 32, 0.24);
}

.btn--primary:is(:hover, :focus-visible) {
  background: var(--color-dark-green);
}

.btn--secondary {
  background: var(--color-white);
  color: var(--color-deep-blue);
  border-color: rgba(255, 255, 255, 0.7);
}

.btn--outline {
  background: transparent;
  color: var(--color-deep-blue);
  border-color: var(--color-royal-blue);
}

.btn--outline:is(:hover, :focus-visible) {
  background: var(--color-deep-blue);
  color: var(--color-white);
  border-color: var(--color-deep-blue);
}

.hero {
  position: relative;
  min-height: 720px;
  display: grid;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
  background:
    linear-gradient(135deg, rgba(0, 32, 76, 0.72), rgba(0, 59, 142, 0.58)),
    url("../images/hero-background-photo.jpg") center / cover no-repeat;
  color: var(--color-white);
  padding: 160px 0 78px;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(0, 24, 58, 0.85), rgba(0, 59, 142, 0.34) 62%, rgba(0, 24, 58, 0.7)),
    radial-gradient(circle at 80% 20%, rgba(101, 179, 46, 0.28), transparent 30%);
}

.hero__content {
  max-width: 860px;
  margin-inline: auto;
  text-align: center;
  animation: fadeUp 620ms ease both;
}

.hero__logo {
  width: min(42vw, 220px);
  margin: 0 auto 18px;
  filter: drop-shadow(0 12px 20px rgba(0, 0, 0, 0.26));
}

.hero__logo img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

.eyebrow,
.section__kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 12px;
  color: var(--color-bright-green);
  font-size: 0.82rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow::before,
.section__kicker::before {
  content: "";
  width: 28px;
  height: 3px;
  border-radius: 999px;
  background: currentColor;
}

.hero h1 {
  max-width: 980px;
  margin: 0 auto;
  font-size: clamp(2.25rem, 8vw, 4.95rem);
  line-height: 1.02;
  letter-spacing: 0;
}

.hero__lead {
  max-width: 730px;
  margin: 20px auto 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: clamp(1.04rem, 2.8vw, 1.28rem);
}

.hero__buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 30px;
}

.section {
  padding: 76px 0;
}

.section__heading {
  max-width: 680px;
  margin: 0 auto 34px;
  text-align: center;
}

.section__heading .section__kicker {
  justify-content: center;
}

.section h2,
.contact-cta h2 {
  margin: 0;
  color: var(--color-deep-blue);
  font-size: clamp(2rem, 5.5vw, 3.1rem);
  line-height: 1.08;
  letter-spacing: 0;
}

.section__heading p,
.about__content p,
.contact-cta p {
  margin: 14px 0 0;
  color: var(--color-muted);
  font-size: 1.03rem;
}

.services {
  background: var(--color-light-grey);
}

.services__grid {
  display: grid;
  gap: 18px;
}

.service-card {
  position: relative;
  overflow: hidden;
  min-height: 260px;
  background: var(--color-white);
  border: 1px solid rgba(220, 229, 239, 0.78);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  padding: 26px;
  transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.service-card::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 5px;
  background: linear-gradient(90deg, var(--color-royal-blue), var(--color-bright-green));
  transform: scaleX(0.35);
  transform-origin: left;
  transition: transform 220ms ease;
}

.service-card:is(:hover, :focus-within) {
  transform: translateY(-7px);
  border-color: rgba(10, 88, 202, 0.25);
  box-shadow: 0 24px 42px rgba(0, 38, 89, 0.16);
}

.service-card:is(:hover, :focus-within)::after {
  transform: scaleX(1);
}

.service-card__icon {
  width: 62px;
  height: 62px;
  display: grid;
  place-items: center;
  margin-bottom: 22px;
  border-radius: var(--radius-md);
  background: linear-gradient(145deg, rgba(10, 88, 202, 0.12), rgba(101, 179, 46, 0.16));
  color: var(--color-royal-blue);
}

.service-card:nth-child(even) .service-card__icon {
  color: var(--color-dark-green);
}

.service-card h3,
.project-card h3,
.quality h3 {
  margin: 0;
  color: var(--color-deep-blue);
  font-size: 1.18rem;
  line-height: 1.25;
}

.service-card p {
  margin: 12px 0 0;
  color: var(--color-muted);
}

.about {
  background: var(--color-white);
}

.about__grid {
  display: grid;
  gap: 34px;
  align-items: center;
}

.about__media {
  overflow: hidden;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
}

.about__media img {
  width: 100%;
  aspect-ratio: 1.08;
  height: auto;
  object-fit: cover;
  object-position: center;
}

.about__content {
  max-width: 610px;
}

.highlights {
  display: grid;
  gap: 12px;
  margin-top: 24px;
  list-style: none;
}

.highlights li {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 54px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-light-grey);
  padding: 12px 14px;
}

.highlights span {
  width: 28px;
  height: 28px;
  flex: 0 0 28px;
  border-radius: 50%;
  background: var(--color-bright-green);
  position: relative;
}

.highlights span::after {
  content: "";
  position: absolute;
  left: 8px;
  top: 6px;
  width: 10px;
  height: 14px;
  border: solid var(--color-white);
  border-width: 0 3px 3px 0;
  transform: rotate(45deg);
}

.projects {
  background: var(--color-light-grey);
}

.projects__grid {
  display: grid;
  gap: 18px;
}

.project-card {
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--color-white);
  box-shadow: var(--shadow-soft);
}

.project-card img {
  width: 100%;
  aspect-ratio: 1.45;
  object-fit: cover;
  object-position: center;
  transition: transform 360ms ease;
}

.project-card:nth-child(2) img {
  object-position: top center;
}

.project-card:nth-child(3) img,
.project-card:nth-child(4) img {
  object-position: center 28%;
}

.project-card:is(:hover, :focus-within) img {
  transform: scale(1.06);
}

.project-card__body {
  padding: 18px;
  border-top: 4px solid var(--color-bright-green);
}

.project-gallery {
  background: var(--color-white);
}

.project-gallery__grid {
  display: grid;
  gap: 18px;
}

.gallery-card {
  position: relative;
  min-height: 300px;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--color-deep-blue);
  box-shadow: var(--shadow-soft);
}

.gallery-card img {
  width: 100%;
  height: 100%;
  min-height: 300px;
  aspect-ratio: 1.18;
  object-fit: cover;
  object-position: center;
  transition: transform 360ms ease;
}

.gallery-card:is(:hover, :focus-within) img {
  transform: scale(1.05);
}

.gallery-card figcaption {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 14px;
  min-height: 46px;
  display: flex;
  align-items: center;
  border-left: 4px solid var(--color-bright-green);
  border-radius: var(--radius-sm);
  background: rgba(0, 24, 58, 0.82);
  color: var(--color-white);
  font-weight: 900;
  padding: 10px 14px;
  backdrop-filter: blur(8px);
}

.quality {
  background:
    linear-gradient(135deg, rgba(0, 59, 142, 0.96), rgba(10, 88, 202, 0.92)),
    var(--color-deep-blue);
  color: var(--color-white);
  padding: 64px 0;
}

.quality__grid {
  display: grid;
  gap: 18px;
}

.quality article {
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
  padding: 24px;
  background: rgba(255, 255, 255, 0.08);
}

.quality span {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--color-bright-green);
  font-weight: 900;
}

.quality h3 {
  color: var(--color-white);
}

.quality p {
  margin: 10px 0 0;
  color: rgba(255, 255, 255, 0.84);
}

.image-strip {
  background: var(--color-light-grey);
}

.image-strip__grid {
  display: grid;
  gap: 18px;
}

.image-strip__grid img {
  width: 100%;
  min-height: 280px;
  aspect-ratio: 1.1;
  object-fit: cover;
  object-position: center;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
}

.image-strip__grid img:nth-child(3) {
  object-position: top center;
}

.contact-cta {
  background: var(--color-white);
}

.contact-cta__inner {
  display: grid;
  gap: 26px;
  align-items: center;
  border-radius: var(--radius-md);
  background:
    linear-gradient(135deg, rgba(245, 247, 250, 0.96), rgba(255, 255, 255, 0.96)),
    url("../images/cta-pattern.svg") center / cover no-repeat;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--color-border);
  padding: 28px;
}

.contact-cta__phone {
  display: inline-flex;
  margin-top: 18px;
  color: var(--color-deep-blue);
  font-size: 1.18rem;
  font-weight: 900;
}

.contact-cta__buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.site-footer {
  background: #06295B;
  color: rgba(255, 255, 255, 0.82);
}

.footer__grid {
  display: grid;
  gap: 30px;
  padding: 56px 0 34px;
}

.brand--footer .brand__text strong,
.brand--footer .brand__text small {
  color: var(--color-white);
}

.brand--footer .brand__mark {
  background: rgba(255, 255, 255, 0.96);
}

.footer__brand p {
  max-width: 300px;
  margin: 16px 0 0;
}

.footer__links h2,
.footer__contact h2 {
  margin: 0 0 14px;
  color: var(--color-white);
  font-size: 1rem;
}

.footer__links h2::after,
.footer__contact h2::after {
  content: "";
  display: block;
  width: 38px;
  height: 3px;
  margin-top: 8px;
  border-radius: 999px;
  background: var(--color-bright-green);
}

.footer__links ul {
  display: grid;
  gap: 9px;
  list-style: none;
}

.footer__links a {
  transition: color 180ms ease;
}

.footer__links a:is(:hover, :focus-visible),
.footer__contact a:is(:hover, :focus-visible) {
  color: var(--color-bright-green);
}

.footer__contact {
  display: grid;
  align-content: start;
  gap: 8px;
  font-style: normal;
}

.footer__contact a {
  color: var(--color-white);
  font-weight: 800;
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.footer__bottom p {
  margin: 0;
  padding: 18px 0;
  font-size: 0.92rem;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (min-width: 560px) {
  .site-header .brand__text {
    display: grid;
  }

  .header__phone {
    font-size: 1rem;
    font-weight: 900;
  }

  .services__grid,
  .projects__grid,
  .quality__grid,
  .image-strip__grid,
  .project-gallery__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .container {
    width: min(100% - 48px, var(--container));
  }

  .header__cta {
    min-height: 42px;
    padding: 10px 14px;
    font-size: 1rem;
  }

  .section {
    padding: 96px 0;
  }

  .about__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .contact-cta__inner {
    grid-template-columns: minmax(0, 1.2fr) auto;
    padding: 44px;
  }

  .footer__grid {
    grid-template-columns: 1.35fr 0.8fr 1fr 0.9fr;
  }
}

@media (min-width: 980px) {
  .site-header {
    top: 18px;
  }

  .header__inner {
    padding-inline: 18px;
  }

  .site-nav ul {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
  }

  .site-nav a {
    padding: 12px 18px;
    white-space: nowrap;
  }

  .hero {
    min-height: 780px;
  }

  .services__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .projects__grid,
  .quality__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .quality__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .image-strip__grid {
    grid-template-columns: 1.1fr 1.1fr 0.8fr;
  }

  .image-strip__grid img {
    min-height: 360px;
  }

  .project-gallery__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .gallery-card--wide {
    grid-column: span 2;
  }

  .gallery-card img {
    min-height: 340px;
  }
}

@media (max-width: 379px) {
  .brand__mark {
    width: 44px;
    height: 44px;
    flex-basis: 44px;
  }

  .brand__text strong {
    font-size: 0.78rem;
  }

  .brand__text small {
    font-size: 0.68rem;
  }

  .header__actions {
    gap: 6px;
  }

  .header__phone {
    font-size: 0.72rem;
  }

  .menu-toggle {
    width: 44px;
    height: 44px;
  }

  .hero__buttons,
  .contact-cta__buttons {
    display: grid;
  }

  .btn {
    width: 100%;
  }
}


/* ===== Expandable Service Cards ===== */
.service-card summary{
  list-style:none;
  cursor:pointer;
}

.service-card summary::-webkit-details-marker{
  display:none;
}

.service-card img{
  width:100%;
  height:220px;
  object-fit:cover;
  border-radius:12px;
  margin-bottom:16px;
}

.service-card summary h3{
  display:flex;
  justify-content:space-between;
  align-items:center;
}

.service-card summary h3::after{
  content:"+";
  font-size:1.8rem;
  color:var(--color-bright-green);
  font-weight:900;
}

.service-card[open] summary h3::after{
  content:"−";
}

.service-card p{
  max-height:0;
  overflow:hidden;
  transition:max-height .4s ease,padding .3s ease;
  margin:0;
}

.service-card[open] p{
  max-height:300px;
  padding-top:16px;
}

.service-card[open]{
  border-color:rgba(10,88,202,.35);
  box-shadow:0 24px 42px rgba(0,38,89,.18);
}