/* ========================================================
   ENKA EMPIRE GROUP LIMITED — brand tokens
   ======================================================== */
:root{
  --navy: #0B3571;
  --navy-dark: #071F45;
  --navy-deeper: #051530;
  --gold: #C2903A;
  --gold-light: #E3B665;
  --cream: #F7F4EC;
  --paper: #FFFFFF;
  --ink: #16181C;
  --grey: #666B72;
  --grey-line: #E4E0D6;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Work Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-label: 'Space Grotesk', 'Work Sans', sans-serif;

  --rail-w: 230px;
  --section-max: 1180px;
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; display:block; }
h1,h2,h3{ font-family: var(--font-display); margin:0; font-weight:700; }
p{ margin:0 0 1em; }
ul{ margin:0; padding:0; }
a{ color:inherit; }

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

/* ========================================================
   INDEX RAIL — signature element: digitized page-number tabs
   ======================================================== */
.index-rail{
  position: fixed;
  top:0; right:0;
  height:100vh;
  width: var(--rail-w);
  background: var(--navy-dark);
  border-left: 1px solid rgba(255,255,255,0.08);
  z-index: 500;
  overflow-y:auto;
  padding: 18px 0;
}
.index-rail ol{ list-style:none; }
.index-rail a{
  display:flex;
  align-items:center;
  gap:12px;
  padding: 12px 22px;
  text-decoration:none;
  font-family: var(--font-label);
  color: rgba(255,255,255,0.55);
  border-left: 3px solid transparent;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}
.index-rail a:hover,
.index-rail a:focus-visible{
  color:#fff;
  background: rgba(255,255,255,0.05);
  border-left-color: var(--gold);
  outline: none;
}
.index-rail a.active{
  color: var(--gold-light);
  border-left-color: var(--gold);
}
.tab-num{
  font-size: 0.75rem;
  font-weight:600;
  letter-spacing: 0.04em;
  min-width: 22px;
}
.tab-label{
  font-size: 0.82rem;
  letter-spacing: 0.01em;
}

.rail-toggle{
  position: fixed;
  top: 18px; right: 18px;
  z-index: 600;
  width: 46px; height: 46px;
  border-radius: 999px;
  border: none;
  background: var(--navy-dark);
  display:none;
  flex-direction: column;
  align-items:center;
  justify-content:center;
  gap:5px;
  cursor:pointer;
}
.rail-toggle span{
  width: 20px; height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform .25s ease, opacity .25s ease;
}
.rail-toggle[aria-expanded="true"] span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.rail-toggle[aria-expanded="true"] span:nth-child(2){ opacity:0; }
.rail-toggle[aria-expanded="true"] span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 980px){
  :root{ --rail-w: 240px; }
  .index-rail{
    transform: translateX(100%);
    transition: transform .3s ease;
    box-shadow: -8px 0 24px rgba(0,0,0,0.25);
  }
  .index-rail.open{ transform: translateX(0); }
  .rail-toggle{ display:flex; }
}

/* ========================================================
   LAYOUT PRIMITIVES
   ======================================================== */
main, header, footer, .commitment{
  margin-right: var(--rail-w);
}
@media (max-width: 980px){
  main, header, footer, .commitment{ margin-right:0; }
}

.section{ padding: 96px 32px; }
.section-inner{ max-width: var(--section-max); margin: 0 auto; }
.section-cream{ background: var(--cream); }
.section-dark{
  background: linear-gradient(160deg, var(--navy) 0%, var(--navy-dark) 100%);
  color: #fff;
}
.section-dark h2, .section-dark h3{ color:#fff; }

.eyebrow-block{ margin-bottom: 40px; }
.eyebrow{
  font-family: var(--font-label);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight:600;
  display:inline-block;
  margin-bottom: 14px;
}
.eyebrow-light{ color: var(--gold-light); }
.section h2{ font-size: clamp(1.9rem, 3.2vw, 2.7rem); letter-spacing: -0.01em; }
.light-heading{ margin-bottom: 40px; }
.subtle{ font-family: var(--font-body); font-weight:400; font-size: 0.62em; color: var(--grey); display:inline-block; }
.section-dark .subtle{ color: rgba(255,255,255,0.6); }

.lead{ font-size: 1.15rem; max-width: 62ch; color:#333; margin-bottom: 44px; }
.lead-light{ color: rgba(255,255,255,0.82); }

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 14px 30px;
  font-family: var(--font-label);
  font-size: 0.92rem;
  letter-spacing: 0.03em;
  text-decoration:none;
  border-radius: 2px;
  transition: transform .2s ease, background .2s ease, color .2s ease;
  border: 1.5px solid transparent;
}
.btn-gold{ background: var(--gold); color: var(--navy-deeper); font-weight:600; }
.btn-gold:hover{ background: var(--gold-light); transform: translateY(-2px); }
.btn-outline{ border-color: rgba(255,255,255,0.6); color:#fff; }
.btn-outline:hover{ background: rgba(255,255,255,0.12); transform: translateY(-2px); }

/* ========================================================
   HERO
   ======================================================== */
.hero{
  position: relative;
  min-height: 100vh;
  display:flex;
  align-items:flex-end;
  overflow:hidden;
}
.hero-media{ position:absolute; inset:0; z-index:0; }
.hero-media img{ width:100%; height:100%; object-fit:cover; }
.hero-scrim{
  position:absolute; inset:0;
  background:
    linear-gradient(0deg, rgba(5,21,48,0.96) 4%, rgba(5,21,48,0.72) 42%, rgba(5,21,48,0.35) 75%, rgba(5,21,48,0.55) 100%);
}
.hero-content{
  position:relative;
  z-index:1;
  color:#fff;
  padding: 0 min(8vw, 100px) 100px;
  max-width: 900px;
}
.hero-logo{
  width: 220px;
  height:auto;
  margin-bottom: 28px;
  mix-blend-mode: screen;
}
.hero-tagline{
  font-family: var(--font-display);
  font-style: italic;
  color: var(--gold-light);
  font-size: 1.15rem;
  margin-bottom: 18px;
}
.hero h1{
  font-size: clamp(2.1rem, 5vw, 3.6rem);
  line-height: 1.12;
  margin-bottom: 22px;
}
.hero-sub{
  font-size: 1.05rem;
  color: rgba(255,255,255,0.82);
  max-width: 56ch;
  margin-bottom: 34px;
}
.hero-actions{ display:flex; gap:16px; flex-wrap:wrap; }

.scroll-cue{
  position:absolute;
  bottom: 28px; left: 50%;
  transform: translateX(-50%);
  z-index:1;
  width: 26px; height: 42px;
  border: 2px solid rgba(255,255,255,0.55);
  border-radius: 20px;
}
.scroll-cue span{
  position:absolute; top:8px; left:50%;
  width:4px; height:8px;
  margin-left:-2px;
  background:var(--gold-light);
  border-radius:3px;
  animation: cue 1.8s ease-in-out infinite;
}
@keyframes cue{
  0%{ opacity:1; transform: translateY(0); }
  70%{ opacity:0; transform: translateY(14px); }
  100%{ opacity:0; }
}

@media (max-width: 640px){
  .hero-content{ padding-bottom: 70px; }
  .hero-logo{ width: 170px; }
}

/* ========================================================
   ABOUT
   ======================================================== */
.about-grid{
  display:grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 64px;
  align-items:start;
}
.about-text p{ font-size: 1.05rem; color:#333; }
@media (max-width: 800px){
  .about-grid{ grid-template-columns: 1fr; gap:24px; }
}

/* ========================================================
   VISION / MISSION
   ======================================================== */
.vm-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  margin-top: 30px;
  border-radius: 4px;
  overflow:hidden;
}
.vm-card{ padding: 46px 40px; }
.vm-gold{ background: var(--gold); color: var(--navy-deeper); }
.vm-navy{ background: rgba(255,255,255,0.06); }
.vm-card h3{
  font-size: 1.5rem;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.vm-gold h3{ color: var(--navy-deeper); }
.vm-card p{ font-size: 1.02rem; margin:0; }
.vm-gold p{ color: rgba(7,31,69,0.85); }
.vm-navy p{ color: rgba(255,255,255,0.85); }
@media (max-width: 700px){
  .vm-grid{ grid-template-columns: 1fr; }
}

/* ========================================================
   SERVICES
   ======================================================== */
.service-list{ display:flex; flex-direction:column; gap: 4px; }
.service-row{
  display:grid;
  grid-template-columns: 90px 1fr;
  gap: 40px;
  padding: 46px 0;
  border-bottom: 1px solid var(--grey-line);
  align-items:center;
}
.service-row.img-right{ grid-template-columns: 90px 1fr 320px; }
.service-row:last-child{ border-bottom:none; }
.service-num{
  font-family: var(--font-display);
  font-size: 2.6rem;
  color: var(--gold);
  opacity: 0.85;
  line-height:1;
}
.service-body h3{ font-size: 1.45rem; margin-bottom: 12px; color: var(--navy); }
.service-body p{ color:#333; max-width: 62ch; }
.service-body .note{ font-style: italic; color: var(--grey); font-size: 0.95rem; }
.service-body ul{ margin-top: 14px; display:flex; flex-direction:column; gap:8px; }
.service-body li{
  list-style:none;
  position:relative;
  padding-left: 22px;
  color: #333;
}
.service-body li::before{
  content:"";
  position:absolute; left:0; top:0.55em;
  width:8px; height:8px;
  background: var(--gold);
  border-radius:1px;
  transform: rotate(45deg);
}
.service-img{ border-radius:4px; overflow:hidden; aspect-ratio: 4/3; }
.service-img img{ width:100%; height:100%; object-fit:cover; transition: transform .5s ease; }
.service-row:hover .service-img img{ transform: scale(1.05); }

@media (max-width: 900px){
  .service-row, .service-row.img-right{
    grid-template-columns: 56px 1fr;
    gap: 20px;
  }
  .service-img{ grid-column: 1 / -1; margin-top: 20px; aspect-ratio: 16/9; }
  .service-num{ font-size: 1.8rem; }
}

/* ========================================================
   APPROACH
   ======================================================== */
.approach-steps{ list-style:none; margin-top: 8px; }
.step{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap: 6px 20px;
  padding: 24px 30px;
  margin-bottom: 3px;
  border-radius: 2px;
  color:#fff;
}
.step-name{ font-family: var(--font-label); font-weight:600; font-size: 1.05rem; min-width: 300px; }
.step-desc{ opacity:0.88; font-size: 0.98rem; }
.step-navy{ background: var(--navy); }
.step-gold{ background: var(--gold); color: var(--navy-deeper); }
.step-gold .step-desc{ opacity:0.75; }
.step-black{ background: #14161A; }
.step-blue{ background: #1178C4; }
.step-grey{ background: #8B8477; color:#fff; }
@media (max-width: 640px){
  .step-name{ min-width:auto; }
}

/* ========================================================
   HSE
   ======================================================== */
.hse-grid{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.hse-item{
  display:flex;
  gap: 16px;
  align-items:flex-start;
  padding: 22px 24px;
  background: var(--cream);
  border-left: 3px solid var(--gold);
  font-size: 1.02rem;
  color:#2b2b2b;
}
.hse-index{
  font-family: var(--font-display);
  font-style: italic;
  color: var(--gold);
  font-size: 1.2rem;
  min-width: 22px;
}
@media (max-width: 700px){ .hse-grid{ grid-template-columns: 1fr; } }

/* ========================================================
   VALUES
   ======================================================== */
.values-grid{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 30px;
  margin-top: 36px;
}
.value-card{ text-align:left; }
.value-icon{
  width: 56px; height:56px;
  color: var(--gold-light);
  margin-bottom: 18px;
}
.value-icon svg{ width:100%; height:100%; }
.value-card h3{ font-size: 1.15rem; margin-bottom: 8px; }
.value-card p{ color: rgba(255,255,255,0.72); font-size: 0.95rem; margin:0; }

/* ========================================================
   STRENGTHS / CLIENTS / EQUIPMENT (shared two-col pattern)
   ======================================================== */
.strengths-grid{
  display:grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items:center;
}
.strengths-grid.reverse{ grid-template-columns: 0.9fr 1.1fr; }
.strengths-grid.reverse > .strengths-img{ order:-1; }
.strengths-img{ border-radius: 4px; overflow:hidden; aspect-ratio: 4/3; }
.strengths-img img{ width:100%; height:100%; object-fit:cover; }

.check-list{ display:flex; flex-direction:column; gap: 16px; margin-top: 6px; }
.check-list li{
  list-style:none;
  display:flex;
  gap: 14px;
  align-items:flex-start;
  font-size: 1.04rem;
  color:#2a2a2a;
}
.check-list li::before{
  content:"";
  flex: 0 0 auto;
  width: 20px; height:20px;
  margin-top: 3px;
  border-radius: 50%;
  background: var(--navy);
  background-image: linear-gradient(135deg, var(--navy), var(--navy-dark));
  position:relative;
}
.check-list li::after{
  content:"";
  position:absolute;
}
.check-list{ position:relative; }
.check-list li{ position:relative; padding-left:0; }
.check-list li::before{
  content: "✓";
  color: var(--gold-light);
  background: var(--navy);
  display:flex; align-items:center; justify-content:center;
  font-size: 0.7rem;
  font-weight:700;
}

@media (max-width: 860px){
  .strengths-grid, .strengths-grid.reverse{ grid-template-columns: 1fr; gap: 30px; }
  .strengths-grid.reverse > .strengths-img{ order:0; }
}

/* ========================================================
   PROJECT GALLERY
   ======================================================== */
.project-list{ display:flex; flex-direction:column; gap: 70px; margin-top: 20px; }
.project-card{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items:center;
}
.project-card.reverse .project-media{ order:2; }
.project-media{ border-radius:4px; overflow:hidden; }
.project-media img{ width:100%; height:100%; object-fit:cover; aspect-ratio: 4/3; }
.project-media-split{ display:grid; grid-template-columns: 1fr 1fr; gap:4px; aspect-ratio: 4/3; }
.project-media-split img{ aspect-ratio: auto; height:100%; }
.project-tag{
  font-family: var(--font-label);
  color: var(--gold-light);
  letter-spacing: 0.1em;
  font-size: 0.85rem;
  display:block;
  margin-bottom: 10px;
}
.project-body h3{ font-size: 1.6rem; margin-bottom: 14px; }
.project-body p{ color: rgba(255,255,255,0.78); }
@media (max-width: 820px){
  .project-card, .project-card.reverse{ grid-template-columns: 1fr; }
  .project-card.reverse .project-media{ order:0; }
}

/* ========================================================
   COMMITMENT BANNER
   ======================================================== */
.commitment{
  position:relative;
  min-height: 56vh;
  display:flex;
  align-items:center;
  overflow:hidden;
}
.commitment-bg{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; }
.commitment-overlay{
  position:absolute; inset:0;
  background: linear-gradient(90deg, rgba(5,21,48,0.92) 0%, rgba(5,21,48,0.55) 65%, rgba(5,21,48,0.3) 100%);
}
.commitment-content{
  position:relative; z-index:1;
  max-width: 640px;
  padding: 60px min(8vw, 100px);
  color:#fff;
}
.commitment-content h2{ font-size: clamp(1.8rem, 3.4vw, 2.6rem); margin-bottom: 20px; }
.commitment-content p{
  background: var(--gold);
  color: var(--navy-deeper);
  padding: 20px 26px;
  font-size: 1.02rem;
  font-weight:500;
  margin:0;
}

/* ========================================================
   CERTIFICATIONS
   ======================================================== */
.cert-grid{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 28px;
  margin-top: 10px;
}
.cert-card{
  margin:0;
  background:#fff;
  border: 1px solid var(--grey-line);
  padding: 12px;
  box-shadow: 0 6px 20px rgba(11,53,113,0.06);
}
.cert-card img{ width:100%; height:auto; border: 1px solid var(--grey-line); }
.cert-card figcaption{
  font-family: var(--font-label);
  font-size: 0.82rem;
  color: var(--navy);
  padding-top: 10px;
  font-weight:500;
}

/* ========================================================
   FOOTER
   ======================================================== */
.footer{
  background: var(--navy-deeper);
  color: #fff;
  padding: 70px 32px 40px;
}
.footer-inner{
  max-width: var(--section-max);
  margin:0 auto;
  text-align:center;
  display:flex;
  flex-direction:column;
  align-items:center;
}
.footer-logo{ width: 170px; margin-bottom: 18px; }
.footer-tagline{
  font-family: var(--font-display);
  font-style: italic;
  color: var(--gold-light);
  margin-bottom: 26px;
}
.footer-contact{
  display:flex;
  flex-direction:column;
  gap: 8px;
  margin-bottom: 30px;
  font-family: var(--font-label);
}
.footer-contact a{ text-decoration:none; font-size: 1.1rem; font-weight:600; color:#fff; }
.footer-address{ color: rgba(255,255,255,0.65); font-size: 0.92rem; }
.footer-copy{ color: rgba(255,255,255,0.4); font-size: 0.82rem; margin:0; }