/* ============================================================
   ROTI-Power — design tokens
   ============================================================ */
:root{
  --bg: #0b0f0d;
  --bg-soft: #101613;
  --surface: #151d19;
  --surface-2: #1b241f;
  --line: rgba(255,255,255,.09);
  --text: #f3f5f2;
  --text-dim: rgba(243,245,242,.66);
  --text-faint: rgba(243,245,242,.42);
  --accent: #4fe08a;
  --accent-dim: #2f9d63;
  --accent-ink: #06140c;
  --radius: 18px;
  --radius-sm: 10px;
  --container: 1220px;
  --gutter: clamp(20px, 5vw, 64px);
  --ff-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --ff-body: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --ease: cubic-bezier(.16,.84,.32,1);
}

*, *::before, *::after{ box-sizing: border-box; }
html{ background: var(--bg); }
html.lenis, html.lenis body{ height: auto; }
html.lenis-smooth{ scroll-behavior: auto; }

body{
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--ff-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img{ max-width: 100%; display: block; }
a{ color: inherit; text-decoration: none; }
ul{ margin: 0; padding: 0; list-style: none; }
h1,h2,h3,h4,p{ margin: 0; }
button{ font-family: inherit; cursor: pointer; }
input, textarea{ font-family: inherit; }

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

/* subtle grain overlay for premium texture */
.grain{
  position: fixed; inset: 0; z-index: 3; pointer-events: none;
  opacity: .045; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.progress-bar{
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: linear-gradient(90deg, var(--accent-dim), var(--accent));
  z-index: 999; transition: width .05s linear;
}

/* ============================================================
   Buttons / tags / shared bits
   ============================================================ */
.btn{
  display: inline-flex; align-items: center; justify-content: center;
  padding: 15px 30px; border-radius: 999px; font-weight: 600; font-size: .92rem;
  letter-spacing: .01em; border: 1px solid transparent; transition: transform .45s var(--ease), background .3s, color .3s, border-color .3s;
}
.btn-primary{ background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover{ transform: translateY(-3px); background: #63e89c; }
.btn-ghost{ border-color: var(--line); color: var(--text); }
.btn-ghost:hover{ transform: translateY(-3px); border-color: var(--accent); color: var(--accent); }
.btn-small{ padding: 10px 20px; font-size: .82rem; }

.tag{
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .78rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 18px;
}
.tag::before{ content: ""; width: 22px; height: 1px; background: var(--accent); }
.tag.light{ color: #9cf7c1; }

.section{ position: relative; padding: clamp(72px, 11vw, 150px) 0; }
.section-head{ max-width: 680px; margin-bottom: clamp(40px, 6vw, 72px); }
.section-head h2{ font-family: var(--ff-display); font-size: clamp(1.9rem, 3.6vw, 2.9rem); font-weight: 600; line-height: 1.12; }
.section-sub{ margin-top: 16px; color: var(--text-dim); font-size: 1.05rem; max-width: 60ch; }

/* ============================================================
   Header / nav
   ============================================================ */
.site-header{
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 20px 0; transition: background .4s var(--ease), padding .4s var(--ease), border-color .4s;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled{
  background: rgba(11,15,13,.78); backdrop-filter: blur(14px) saturate(140%);
  padding: 13px 0; border-color: var(--line);
}
.header-inner{
  max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter);
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.logo{
  font-family: var(--ff-display); font-weight: 600; font-size: 1.28rem; letter-spacing: .01em; flex-shrink: 0;
}
.logo span{ font-style: italic; color: var(--accent); font-weight: 500; }

.main-nav ul{ display: flex; gap: 30px; }
.main-nav a{
  position: relative; font-size: .87rem; font-weight: 500; color: var(--text-dim); transition: color .3s;
  padding: 4px 0;
}
.main-nav a::after{
  content: ""; position: absolute; left: 0; bottom: -2px; width: 0; height: 1px; background: var(--accent);
  transition: width .35s var(--ease);
}
.main-nav a:hover, .main-nav a.active{ color: var(--text); }
.main-nav a:hover::after, .main-nav a.active::after{ width: 100%; }

.header-actions{ display: flex; align-items: center; gap: 16px; }

.lang-switch{ display: flex; align-items: center; gap: 2px; border: 1px solid var(--line); border-radius: 999px; padding: 3px; }
.lang-switch button{
  background: none; border: none; color: var(--text-faint); font-size: .76rem; font-weight: 700;
  letter-spacing: .04em; padding: 6px 11px; border-radius: 999px; transition: background .3s, color .3s;
}
.lang-switch button.active{ background: var(--accent); color: var(--accent-ink); }
.lang-switch button:not(.active):hover{ color: var(--text); }

.header-cta{ white-space: nowrap; }

.menu-toggle{
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 42px; height: 42px; background: none; border: 1px solid var(--line); border-radius: 50%;
}
.menu-toggle span{ width: 16px; height: 1.5px; background: var(--text); margin: 0 auto; transition: transform .35s var(--ease), opacity .3s; }
.menu-toggle.open span:nth-child(1){ transform: translateY(6.5px) rotate(45deg); }
.menu-toggle.open span:nth-child(2){ opacity: 0; }
.menu-toggle.open span:nth-child(3){ transform: translateY(-6.5px) rotate(-45deg); }

.mobile-nav{
  display: none; position: fixed; inset: 0; top: 0; z-index: 90;
  height: 100vh; height: 100dvh;
  background: var(--bg); padding: 110px 28px 40px; flex-direction: column; justify-content: space-between;
  overflow-y: auto; transform: translateY(-100%); transition: transform .5s var(--ease);
}
.mobile-nav.open{ transform: translateY(0); display: flex; }
.mobile-nav ul{ display: flex; flex-direction: column; gap: 6px; }
.mobile-nav a{ font-family: var(--ff-display); font-size: 2.1rem; padding: 12px 0; display: block; border-bottom: 1px solid var(--line); }
.lang-switch-mobile{ align-self: flex-start; }
.lang-switch-mobile button{ font-size: .85rem; padding: 9px 16px; }

/* ============================================================
   Hero
   ============================================================ */
.hero{
  position: relative; min-height: 100svh; display: flex; flex-direction: column;
  align-items: center; justify-content: center; text-align: center; overflow: hidden;
  padding: 140px var(--gutter) 60px;
}
.hero-media{ position: absolute; inset: 0; z-index: 0; }
.hero-media img{ width: 100%; height: 100%; object-fit: cover; object-position: center 60%; will-change: transform; }
.hero-overlay{
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(6,10,8,.55) 0%, rgba(6,10,8,.72) 55%, var(--bg) 100%);
}
.hero-inner{ position: relative; z-index: 1; max-width: 900px; }
.eyebrow{ font-size: .84rem; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; color: var(--accent); margin-bottom: 22px; }
.hero-title{
  font-family: var(--ff-display); font-weight: 600; letter-spacing: -.01em;
  font-size: clamp(3.4rem, 11vw, 8.4rem); line-height: .96; display: flex; flex-wrap: wrap; justify-content: center; gap: .06em;
}
.hero-title .accent{ font-style: italic; color: var(--accent); font-weight: 500; }
.hero-subtitle{ margin: 30px auto 0; max-width: 56ch; font-size: clamp(1rem, 1.6vw, 1.2rem); color: var(--text-dim); }
.hero-cta{ margin-top: 40px; display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; }

.scroll-cue{
  position: absolute; bottom: 34px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 10px; z-index: 1;
  font-size: .72rem; letter-spacing: .16em; text-transform: uppercase; color: var(--text-faint);
}
.scroll-cue i{
  width: 1px; height: 40px; background: linear-gradient(180deg, var(--accent), transparent);
  position: relative; overflow: hidden;
}
.scroll-cue i::after{
  content: ""; position: absolute; top: -40px; left: 0; width: 100%; height: 40px; background: var(--text);
  animation: cue 1.8s ease-in-out infinite;
}
@keyframes cue{ to{ top: 40px; } }

/* ============================================================
   Reveal animation base state (progressed by GSAP)
   ============================================================ */
.reveal-up{ opacity: 0; transform: translateY(36px); }
.reveal-up.in{ opacity: 1; transform: translateY(0); transition: opacity 1s var(--ease), transform 1s var(--ease); }
.no-js .reveal-up{ opacity: 1; transform: none; }

/* ============================================================
   About
   ============================================================ */
.about-grid{ display: grid; grid-template-columns: 1.35fr 1fr; gap: clamp(40px, 6vw, 90px); align-items: start; }
.about-copy p{ color: var(--text-dim); margin-bottom: 20px; font-size: 1.02rem; }
.about-stats{ display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.stat{ background: var(--surface); padding: 30px 24px; display: flex; flex-direction: column; gap: 8px; }
.stat-value{ font-family: var(--ff-display); font-size: clamp(1.7rem, 2.6vw, 2.3rem); font-weight: 600; color: var(--accent); }
.stat-label{ font-size: .85rem; color: var(--text-dim); line-height: 1.4; }

/* ============================================================
   Services
   ============================================================ */
.services-grid{ display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.service-card{ background: var(--surface); padding: 40px 32px; transition: background .4s var(--ease); position: relative; }
.service-card:hover{ background: var(--surface-2); }
.service-num{ font-family: var(--ff-display); font-style: italic; color: var(--accent); font-size: 1.1rem; }
.service-card h3{ font-family: var(--ff-display); font-weight: 600; font-size: 1.22rem; margin: 18px 0 12px; line-height: 1.25; }
.service-card p{ color: var(--text-dim); font-size: .93rem; }

/* ============================================================
   Recruitment (inverted / feature panel)
   ============================================================ */
.recruitment{ background: var(--bg-soft); overflow: hidden; }
.recruitment-bg{
  position: absolute; inset: 0; opacity: .5;
  background: radial-gradient(600px 380px at 85% 20%, rgba(79,224,138,.14), transparent 70%);
}
.recruitment-grid{ position: relative; display: grid; grid-template-columns: 1.2fr 1fr; gap: clamp(40px,6vw,90px); align-items: center; }
.recruitment h2{ font-family: var(--ff-display); font-weight: 600; font-size: clamp(1.8rem,3.2vw,2.6rem); margin-bottom: 20px; line-height: 1.15; }
.recruitment p{ color: var(--text-dim); margin-bottom: 16px; max-width: 54ch; }
.permit-badge{
  margin-top: 26px; display: flex; flex-direction: column; gap: 4px;
  border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 16px 20px; max-width: 380px;
}
.permit-badge strong{ font-size: .82rem; letter-spacing: .06em; text-transform: uppercase; color: var(--accent); }
.permit-badge span{ font-size: .88rem; color: var(--text-dim); }

.feature-list{ display: flex; flex-direction: column; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.feature-list li{
  background: var(--surface); padding: 22px 26px; display: flex; align-items: center; gap: 14px;
  font-size: .96rem; color: var(--text);
}
.feature-list li::before{
  content: ""; flex-shrink: 0; width: 9px; height: 9px; border-radius: 50%; background: var(--accent);
}

/* ============================================================
   Customers
   ============================================================ */
.industries{ display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 48px; }
.industries span{
  border: 1px solid var(--line); border-radius: 999px; padding: 11px 22px; font-size: .88rem; font-weight: 500;
  color: var(--text-dim); transition: border-color .3s, color .3s;
}
.industries span:hover{ border-color: var(--accent); color: var(--accent); }
.clients-caption{ font-size: .84rem; color: var(--text-faint); margin-bottom: 20px; }
.clients-grid{ display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.client-card{
  display: flex; align-items: center; justify-content: center; height: 96px; padding: 20px;
  background: #f4f5f2; border-radius: var(--radius-sm); border: 1px solid var(--line);
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s;
}
.client-card:hover{ transform: translateY(-4px); border-color: var(--accent); box-shadow: 0 16px 32px -20px rgba(0,0,0,.5); }
.client-card img{ max-width: 100%; max-height: 42px; width: auto; object-fit: contain; }
@media (hover: hover) and (pointer: fine){
  .client-card img{ filter: grayscale(1) opacity(.8); transition: filter .25s var(--ease); }
  .client-card:hover img{ filter: grayscale(0) opacity(1); }
}
@media (hover: hover) and (pointer: fine) and (prefers-reduced-motion: reduce){
  .client-card img{ transition: none; }
}
.client-card--text{ background: var(--surface); }
.client-card--text span{
  font-family: var(--ff-display); font-style: italic; font-weight: 600; font-size: 1.05rem;
  color: var(--text); text-align: center; line-height: 1.25;
}
.client-card--text:hover span{ color: var(--accent); }

/* ============================================================
   References
   ============================================================ */
.references-grid{ display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(24px, 3vw, 40px); margin-bottom: 20px; }
.reference-card h3{ font-family: var(--ff-display); font-weight: 600; font-size: 1.25rem; margin-bottom: 16px; }
.reference-card ul{ display: flex; flex-direction: column; gap: 12px; }
.reference-card li{ font-size: .92rem; color: var(--text-dim); padding-left: 18px; position: relative; }
.reference-card li::before{ content: "—"; position: absolute; left: 0; color: var(--accent); }
.references-cta{ color: var(--text-faint); font-size: .92rem; font-style: italic; }

.gallery-pin{
  width: 100%; margin-top: clamp(60px, 8vw, 110px); padding: 30px 0 40px; overflow: hidden;
  background: var(--bg); position: relative; z-index: 5;
}
.gallery-tag{ margin: 0 var(--gutter) 26px; }
.gallery-track{ display: flex; gap: 22px; padding: 0 var(--gutter); width: max-content; }
.gallery-track figure{
  margin: 0; width: min(74vw, 460px); flex-shrink: 0; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); aspect-ratio: 4/5; background: var(--surface);
}
.gallery-track img{ width: 100%; height: 100%; object-fit: cover; }
.gallery-track figure:nth-child(3n+2){ margin-top: 46px; }
.gallery-track figure:nth-child(4n){ width: min(60vw, 340px); }

@media (max-width: 759px){
  .gallery-track{
    width: 100%; max-width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch;
    scroll-snap-type: x proximity; padding-bottom: 6px;
  }
  .gallery-track figure{ scroll-snap-align: start; }
}

/* ============================================================
   Philosophy
   ============================================================ */
.pillars{ display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.pillar{ background: var(--surface); padding: 40px; }
.pillar h3{ font-family: var(--ff-display); font-weight: 600; font-style: italic; font-size: 1.4rem; color: var(--accent); margin-bottom: 14px; }
.pillar p{ color: var(--text-dim); font-size: .96rem; }

/* ============================================================
   Certificates
   ============================================================ */
.certificates-grid{ display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-bottom: 50px; }
.cert-card{ border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 26px 28px; background: var(--surface); }
.cert-card h4{ font-family: var(--ff-display); font-weight: 600; font-size: 1.08rem; margin-bottom: 6px; }
.cert-issuer{ display: block; font-size: .76rem; letter-spacing: .03em; color: var(--accent); margin-bottom: 12px; }
.cert-card p{ font-size: .88rem; color: var(--text-dim); }
.memberships{ display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 16px; padding-top: 30px; border-top: 1px solid var(--line); }
.memberships strong{ font-size: .82rem; letter-spacing: .06em; text-transform: uppercase; color: var(--accent); margin-right: 8px; }
.memberships ul{ display: flex; flex-wrap: wrap; gap: 8px 22px; }
.memberships li{ font-size: .9rem; color: var(--text-dim); }

/* ============================================================
   Contact
   ============================================================ */
.contact{ background: var(--bg-soft); }
.contact-grid{ max-width: 620px; }
.contact-details{ margin-top: 30px; display: flex; flex-direction: column; gap: 16px; }
.contact-details div{ display: flex; gap: 18px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.contact-details dt{ width: 110px; flex-shrink: 0; font-size: .78rem; letter-spacing: .05em; text-transform: uppercase; color: var(--text-faint); }
.contact-details dd{ margin: 0; font-size: .96rem; }
.contact-details a:hover{ color: var(--accent); }

/* ============================================================
   Footer
   ============================================================ */
.site-footer{ padding: 60px 0 40px; border-top: 1px solid var(--line); }
.footer-inner{ display: flex; flex-direction: column; align-items: center; text-align: center; gap: 14px; }
.footer-company{ color: var(--text-dim); font-size: .92rem; }
.footer-rights{ color: var(--text-faint); font-size: .82rem; }
.disclaimer{ margin-top: 18px; max-width: 640px; }
.disclaimer summary{ cursor: pointer; font-size: .8rem; color: var(--text-faint); }
.disclaimer p{ margin-top: 12px; font-size: .78rem; color: var(--text-faint); line-height: 1.6; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 980px){
  .main-nav{ display: none; }
  .header-cta{ display: none; }
  .menu-toggle{ display: flex; }
  .about-grid, .recruitment-grid{ grid-template-columns: 1fr; }
  .about-stats{ grid-template-columns: 1fr 1fr; }
  .services-grid{ grid-template-columns: 1fr 1fr; }
  .references-grid{ grid-template-columns: 1fr; gap: 36px; }
  .pillars, .certificates-grid{ grid-template-columns: 1fr; }
  .clients-grid{ grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 620px){
  .services-grid{ grid-template-columns: 1fr; }
  .about-stats{ grid-template-columns: 1fr; }
  #langSwitch{ display: none; }
  .header-actions{ gap: 10px; }
  .hero{ padding-top: 120px; }
  .gallery-track figure:nth-child(3n+2){ margin-top: 0; }
  .contact-details dt{ width: 90px; font-size: .72rem; }
  .clients-grid{ grid-template-columns: repeat(2, 1fr); }
  .client-card{ height: 80px; padding: 14px; }
  .client-card img{ max-height: 34px; }
}

@media (prefers-reduced-motion: reduce){
  .reveal-up{ opacity: 1 !important; transform: none !important; }
  .scroll-cue i::after{ animation: none; }
}