/* =============== ROOT VARIABLES =============== */

:root {
    --bg: #ffffff;
    --fg: #000000;
    --muted: #111111;
    --subtle: #eaeaea;
    --soft: #f5f5f5;
    --radius: 0px;
    --container: 1160px;
    --gutter: 24px;
    --navH: 64px;

    --h1: clamp(40px, 5.2vw, 84px);
    --h2: clamp(24px, 2.4vw, 34px);
    --h3: clamp(16px, 1.4vw, 18px);
    --body: 16px;
    --lead: 18px;

    --lh-tight: 1.08;
    --lh: 1.55;
    --ls-tight: -0.03em;
    --ls: -0.01em;

    --ease: cubic-bezier(.2, .8, .2, 1);
    --t: 220ms var(--ease);
    --t2: 340ms var(--ease);
}

/* =============== RESET =============== */

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
    margin: 0;
    font-family: 'inter';
    background: var(--bg);
    color: var(--fg);
    letter-spacing: var(--ls);
    padding-top: var(--navH);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: geometricPrecision;
}

::selection {
    background: #000;
    color: #fff;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: #ffffff;
}

/* =============== UTILITIES =============== */

.container {
    max-width: calc(var(--container) + (var(--gutter) * 2));
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.grid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 24px;
}

.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;
}

[data-reveal] {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity var(--t2), transform var(--t2);
    will-change: opacity, transform;
}

[data-reveal].is-in {
    opacity: 1;
    transform: translateY(0);
}

/* =============== NAVIGATION =============== */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--subtle);
}

.navInner {
    height: var(--navH);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.brand {
    display: flex;
    align-items: baseline;
    gap: 10px;
    margin-top: -4px;
    min-width: 160px;
    white-space: nowrap;
}

.brandMark {
    font-weight: 600;
    letter-spacing: -0.02em;
    font-size: 20px;
    line-height: 1;
}

.brandMark sup {
    font-size: 0.58em;
    vertical-align: text-top;
    margin-left: 1px;
    opacity: 0.92;
    font-weight: 600;
}

.brandTag {
    font-size: 13px;
    color: var(--muted);
    opacity: 0.78;
    letter-spacing: -0.01em;
    display: none;
}

.navLinks {
    display: flex;
    align-items: center;
    gap: 18px;
}

.navLinks a {
    font-size: 13px;
    color: var(--muted);
    opacity: 0.82;
    padding: 8px 0;
    position: relative;
    transition: opacity var(--t);
}

.navLinks a:hover { opacity: 1; }

.navLinks a:focus-visible {
    outline: 2px solid #000;
    outline-offset: 4px;
}

.navLinks a.active {
    opacity: 1;
    color: var(--fg);
}

.navLinks a.active::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 2px;
    height: 1px;
    background: #000;
    opacity: 0.85;
}

.navRight {
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #000;
    background: #000;
    color: #fff;
    padding: 10px 14px;
    font-size: 13px;
    line-height: 1;
    border-radius: var(--radius);
    letter-spacing: -0.01em;
    transition: transform var(--t), opacity var(--t), background var(--t), color var(--t);
    user-select: none;
}

.btn:hover { opacity: 0.92; }
.btn:active { transform: translateY(1px); }

.btn:focus-visible {
    outline: 2px solid #000;
    outline-offset: 4px;
}

.btnGhost {
    border: 1px solid var(--subtle);
    background: transparent;
    color: #000;
}

.btnGhost:hover {
    border-color: #000;
    background: var(--soft);
    opacity: 1;
}

.menuBtn {
    display: none;
    border: 1px solid var(--subtle);
    background: #fff;
    padding: 10px 12px;
    border-radius: var(--radius);
    font-size: 13px;
    line-height: 1;
    color: #000;
    transition: border-color var(--t), background var(--t);
}

.menuBtn:hover {
    border-color: #000;
    background: var(--soft);
}

.menuBtn:focus-visible {
    outline: 2px solid #000;
    outline-offset: 4px;
}

/* =============== SLIDE BAR (PHONE) =============== */

.drawerOverlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.28);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--t2);
    z-index: 60;
}

.drawerOverlay.open {
    opacity: 1;
    pointer-events: auto;
}

.drawer {
    position: fixed;
    right: 0;
    top: 0;
    height: 100%;
    width: min(380px, 92vw);
    background: #fff;
    border-left: 1px solid var(--subtle);
    transform: translateX(100%);
    transition: transform var(--t2);
    z-index: 70;
    display: flex;
    flex-direction: column;
}

.drawer.open { transform: translateX(0); }

.drawerHeader {
    height: var(--navH);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--gutter);
    border-bottom: 1px solid var(--subtle);
}

.drawerBody {
    padding: 18px var(--gutter) 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.drawer a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--subtle);
    font-size: 14px;
    color: #000;
    letter-spacing: -0.01em;
}

.drawer a span {
    color: var(--muted);
    opacity: 0.7;
    font-size: 12px;
}


/* =============== SECTIONS =============== */

main { overflow-x: hidden; }

section {
    scroll-margin-top: calc(var(--navH) + 16px);
    padding: 30px 0;
}

.kicker {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
    opacity: 0.72;
    margin: 0 0 12px;
}

.h2 {
    font-size: var(--h2);
    font-weight: 600;
    letter-spacing: var(--ls-tight);
    line-height: 1.15;        
    margin: 0 0 40px;             
    position: relative;           
    display: inline-block;        
}

.h2::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -8px;
    transform: translateX(-50%) scaleX(0);
    width: 100%;
    height: 2px;
    background: #000;
    transition: transform var(--t);
}

.h2:hover::after {
    transform: translateX(-50%) scaleX(1);
}

.p {
    margin: 0;
    font-size: var(--body);
    line-height: var(--lh);
    color: var(--muted);
    opacity: 0.88;
    max-width: 72ch;
}

/* =============== HOME =============== */

.hero {
    height: calc(100vh - var(--navH));
    display: flex;
    align-items: center;
}

.heroGrid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 24px;
    align-items: center;
    justify-content: center; 
}

.heroLeft {
    grid-column: span 8;       
}

.heroRight {
    grid-column: 10 / span 3;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding-bottom: 6px;
}

.h1 {
    margin: 0;
    font-size: var(--h1);
    line-height: var(--lh-tight);
    letter-spacing: var(--ls-tight);
    font-weight: 600;
    margin-top: -50px;
}

.lead {
    margin-top: 18px;
    font-size: clamp(16px, 1.4vw, var(--lead));
    line-height: 1.65;
    color: var(--muted);
    opacity: 0.9;
    max-width: 66ch;
}   

.heroCtas {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 28px;
}

/* =============== SERVICES =============== */

.servicesHeader {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 18px;
    border-bottom: 1px solid var(--subtle);
    padding-bottom: 18px;
    margin-bottom: 18px;
}

.servicesGrid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 16px 24px;
}

.service {
    grid-column: span 4;
    padding: 18px 0;
    border-bottom: 1px solid var(--subtle);
}

.service h3 {
    margin: 0;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.service p {
    margin: 10px 0 0;
    font-size: 14px;
    line-height: 1.6;
    color: var(--muted);
    opacity: 0.86;
    max-width: 44ch;
}

.hoverUnderline {
    position: relative;
    padding-bottom: 6px;
    display: inline-block;
}

.hoverUnderline::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    height: 1px;
    width: 100%;
    background: #000;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--t);
    opacity: 0.85;
}

.service:hover .hoverUnderline::after {
    transform: scaleX(1);
}

/* =============== WORK =============== */

.workHeader {
    display: flex;
    align-items: left;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 18px;
}

.workLink {
    display: inline-block;
    margin-top: 14px;
    font-size: 14px;
    color: #111;
    font-weight: 500;
    transition: opacity 0.3s ease;
}

.workLink:hover {
    opacity: 0.6;
}

.filters {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.chip {
    border: 1px solid var(--subtle);
    background: #fff;
    color: #000;
    font-size: 12px;
    padding: 8px 10px;
    border-radius: var(--radius);
    opacity: 0.9;
    transition: border-color var(--t), background var(--t), opacity var(--t);
}

.chip:hover {
    border-color: #000;
    background: var(--soft);
    opacity: 1;
}

.chip[aria-pressed="true"] {
    border-color: #000;
    background: #000;
    color: #fff;
    opacity: 1;
}

.chip:focus-visible {
    outline: 2px solid #000;
    outline-offset: 4px;
}

.workGrid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 16px 24px;
}

.card {
    grid-column: 1 / -1;
    max-width: 2000px;
    margin: 0;
    border: 1px solid var(--subtle);
    border-radius: var(--radius);
    background: #fff;
    overflow: hidden;
    min-height: 260px;
    display: flex;
    flex-direction: column;
    transition: border-color var(--t);
}

.card:hover {
    border-color: #000;
}

.thumb {
    display: flex;
    justify-content: center;
}

.thumb img {
    width: 100%;
    height: auto;
    display: block;
}

.twoImages {
    display: flex;
    gap: 10px;
    align-items: center;
    justify-content: flex-start;
    flex-wrap: nowrap;  
}

.twoImages img {
    height: 400px;     
    width: auto;
    object-fit: contain;
    display: block;
}

.cardBody {
    padding: 16px 16px 18px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}

.cardTop {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.card h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.card p {
    margin: 0;
    font-size: 14px;
    line-height: 1.6;
    color: var(--muted);
    opacity: 0.86;
    max-width: 100%;
}

.pill {
    font-size: 12px;
    border: 1px solid var(--subtle);
    padding: 6px 8px;
    border-radius: var(--radius);
    color: var(--muted);
    opacity: 0.85;
    white-space: nowrap;
}

.reveal {
    margin-top: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 12px;
    border-top: 1px solid var(--subtle);
    font-size: 13px;
    letter-spacing: -0.01em;
    opacity: 0.9;
}

.reveal span {
    font-size: 12px;
    color: var(--muted);
    opacity: 0.78;
}

.card .reveal {
    transform: translateY(6px);
    opacity: 0;
    transition: transform var(--t2), opacity var(--t2);
}

.card:hover .reveal {
    transform: translateY(0);
    opacity: 1;
}

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

.aboutWrap {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 24px;
    align-items: start;
}

.aboutTitle { grid-column: 1 / span 4; }
.aboutBody { grid-column: 5 / span 8; }

/* =============== CLIENT REVIEWS =============== */

.reviewsGrid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 24px;
}

.reviewCard {
    grid-column: span 6;
    border: 1px solid var(--subtle);
    padding: 24px;
    background: #fff;
    transition: border-color var(--t);
}

.reviewCard:hover {
    border-color: #000;
}

.stars {
    font-size: 14px;
    letter-spacing: 3px;
    margin-bottom: 12px;
}

.reviewText {
    font-size: 14px;
    line-height: 1.6;
    margin: 0 0 16px;
    max-width: 50ch;
    color: var(--muted);
    opacity: 0.9;
}

.reviewName {
    font-size: 13px;
    opacity: 0.7;
}

/* =============== ENGINEERS =============== */

.engineersGrid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 24px;
}

.engineerCard {
    grid-column: span 6;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 24px;
    border: 1px solid var(--subtle);
    padding: 24px;
    background: #fff;
    transition: border-color var(--t);
}

.engineerCard:hover {
    border-color: #000;
}

.engineerContent {
    flex: 1;
}

.engineerContent h3 {
    margin: 0 0 6px;
    font-size: 18px;
    font-weight: 600;
}

.engineerContent .role {
    margin: 0 0 14px;
    font-size: 13px;
    color: var(--muted);
    opacity: 0.7;
}

.engineerContent p {
    margin: 0;
    font-size: 14px;
    line-height: 1.6;
    max-width: 50ch;
}

.engineerImage {
    width: 120px;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    flex-shrink: 0;
}

.engineerImage img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* =============== CONTACT =============== */

.contact {
    border-top: 1px solid var(--subtle);
    padding-top: 84px;
    margin-top: 50px;
}

.contactGrid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 24px;
    align-items: end;
}

.contactLeft { grid-column: 1 / span 8; }
.contactRight {
    grid-column: 9 / span 4;
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: flex-start;
}

.contact {
  padding: 120px 0;
  text-align: center;
}

.contactTitle {
  font-size: 42px;
  font-weight: 600;
  margin-bottom: 20px;
}

.contactSubtext {
  font-size: 18px;
  color: #666;
  margin-bottom: 50px;
}

.callButton {
  display: inline-block;
  background: #000;
  color: #fff;
  padding: 14px 40px;
  text-decoration: none;
  font-size: 15px;
  letter-spacing: 1px;
  text-transform: uppercase;
  border: 1px solid #000;
  transition: all 0.3s ease;
}

.callButton:hover {
  background: #fff;
  color: #000;
}

.emailBox {
  display: inline-block;
  border: 1px solid #000;
  padding: 14px 40px;
  text-decoration: none;
  color: #000;
  font-size: 15px;
  transition: 0.3s ease;
}

.emailBox:hover {
  background: #000;
  color: #fff;
}

.contactInfo {
  margin-top: 35px;
}

.contactEmail {
  font-size: 15px;
  color: #111;
  margin-bottom: 10px;
}

.contactNumbers {
  font-size: 14px;
  color: #777;
  letter-spacing: 0.5px;
}

.socialIcons {
  margin-top: -80px;
  display: flex;
  justify-content: center;
  gap: 40px;
}

.socialIcon {
  width: 22px;
  height: 22px;
  transition: 0.25s ease;
}

.socialLink:hover .socialIcon {
  opacity: 0.6;
  transform: translateY(-2px);
}

/* =============== FOOTER =============== */

.footerCopy {
  margin-top: 100px;
  margin-bottom: 40px;
  padding-top: 25px;
  border-top: 1px solid #eee;
  text-align: center;
}

.footerCopy p {
  font-size: 13px;
  color: #999;
}

/* =============== PARALLAX =============== */

.workSection {
  position: relative;
  padding: 120px 0;
}

.parallaxWrapper {
  position: relative;
  margin-top: 60px;
}

.parallaxProject {
  position: relative;
  height: 75vh;
  margin-bottom: 80px;
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.08);
  transition: transform 0.3s ease;
  background: #f5f5f5;
}

.parallaxProject video {
  position: absolute;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%) contrast(1.05);
}

.projectOverlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(255,255,255,0.85),
    rgba(255,255,255,0.2)
  );
  display: flex;
  align-items: flex-end;
  padding: 40px;
}

.projectOverlay h3 {
  font-size: 28px;
  font-weight: 500;
  margin-bottom: 8px;
}

.projectOverlay p {
  opacity: 0.7;
  font-size: 14px;
  max-width: 400px;
}

.progressBar {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: #000;
  z-index: 999;
}

/* =============== PHONE =============== */

@media (max-width: 768px) {

  :root {
    --gutter: 18px;
    --navH: 60px;    
  }

  body {
    padding-top: var(--navH);
    
  }

section {
  scroll-margin-top: calc(var(--navH) + 16px);
  padding: 10px 0;
}

  /* ---------------- NAV ---------------- */

  .navInner {
    padding: 0 16px;
  }

  .brand {
    min-width: auto;
  }

  .brandMark {
    font-size: 15px;
  }

  .navLinks {
    gap: 10px;
  }

  .navLinks a {
    font-size: 11px;
    padding: 6px 0;
    white-space: nowrap;
  }

  /* ---------------- HERO ---------------- */

  .hero {
    height: calc(100vh - var(--navH));
    display: flex;
    align-items: center;
  }

  .heroGrid {
    grid-template-columns: repeat(12, 1fr);
  }

  .heroLeft {
    grid-column: 2 / span 10;
  }

  .heroRight {
    display: none;
  }

  .h1 {
    font-size: clamp(34px, 9vw, 46px);
    margin-top: 0;
    margin-top: -50px;
  }

  .lead {
    font-size: 15px;
    max-width: 100%;
  }

  .heroCtas {
    gap: 8px;
  }

  /* ---------------- SERVICES ---------------- */

  .servicesGrid {
    grid-template-columns: 1fr;
    margin-top: -20px;
    margin-bottom: 50px;
  }

  .service {
    grid-column: 1 / -1;
  }

  /* ---------------- WORK ---------------- */

  .workGrid {
    margin-top: -20px;
    margin-bottom: 50px;
    grid-template-columns: repeat(12, 1fr);
  }

  .card {
    grid-column: 1 / -1;
  }

  .thumb img {
    width: 100%;
    height: auto;
  }

  .twoImages {
    flex-wrap: nowrap;
    gap: 8px;
  }

  .twoImages img {
    height: 240px; 
  }

  .card h3 {
    font-size: 14px;
  }

  .card p {
    font-size: 12.5px;
    line-height: 1.5;
  }

  .pill {
    font-size: 11px;
  }

  .reveal {
    font-size: 12px;
  }

  /* ---------------- ABOUT ---------------- */

  .aboutWrap {
    grid-template-columns: 1fr;
  }

  .aboutTitle,
  .aboutBody {
    grid-column: 1 / -1;
  }

  p,
  .p,
  .lead,
  .reviewName,
  .stars,
  .reviewText,
  .engineerContent p
  {
    font-size: 12.5px;
    line-height: 1.55;

  }


  /* ---------------- REVIEWS ---------------- */

  .reviewsGrid {
    margin-top: 20px;
    margin-bottom: 50px;
    grid-template-columns: 1fr;
  }

  .reviewCard {
    grid-column: 1 / -1;
  }

  /* ---------------- ENGINEERS ---------------- */

 .engineersGrid {
    margin-top: -20px;
    margin-bottom: 50px;
    grid-template-columns: 1fr;
  }

  .engineerCard {
    grid-column: 1 / -1;
    flex-direction: row;          /* make it rectangle */
    align-items: center;
    padding: 14px 16px;
    gap: 16px;
  }

  .engineerImage {
    width: 70px;                  /* small image */
    height: 70px;
    aspect-ratio: 1 / 1;
    flex-shrink: 0;
  }

  .engineerImage img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .engineerContent h3 {
    font-size: 14px;              /* smaller font */
    margin-bottom: 4px;
  }

  .engineerContent .role {
    font-size: 11px;
    margin-bottom: 6px;
  }

  .engineerContent p {
    font-size: 12px;
    line-height: 1.5;
  }


  /* ---------------- CONTACT ---------------- */

  .contact {
    margin-top: -20px;
    margin-bottom: 50px;
    padding: 80px 0;
  }

  .contactTitle {
    font-size: 28px;
  }

  .contactSubtext {
    font-size: 15px;
  }

  .callButton,
  .emailBox {
    width: 100%;
    max-width: 280px;
  }

  .socialIcons {
    margin-top: -120px;
  }

  .footerCopy {
    margin-top: 80px;
  }

  /* ---------------- PARALLAX ---------------- */

  .parallaxProject {
    height: 55vh;
  }

  .projectOverlay {
    padding: 24px;
  }

  .projectOverlay h3 {
    font-size: 20px;
  }

}