/* =========================================================
   ELVION POWER SOLUTIONS — Design System
   Typography: Space Grotesk (display) + Inter (body)
   ========================================================= */

:root{
  --deep-blue:   #0A437A;
  --charcoal:    #142433;
  --charcoal-2:  #0C1A26;
  --energy-green:#19A85B;
  --teal:        #0B8F86;
  --bg:          #FFFFFF;
  --bg-soft:     #F4F7F8;
  --bg-soft-2:   #EEF2F3;
  --ink:         #16232F;
  --ink-soft:    #4C5C67;
  --line:        #DEE5E8;
  --line-strong: #C7D1D5;
  --white:       #FFFFFF;
  --gradient:    linear-gradient(100deg, var(--teal) 0%, var(--energy-green) 100%);
  --max: 1180px;
  --radius: 3px;
  --shadow-soft: 0 18px 40px -24px rgba(10, 30, 45, .28);
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
}
h1,h2,h3,h4{
  font-family:"Space Grotesk", "Inter", sans-serif;
  color: var(--charcoal-2);
  line-height: 1.15;
  margin: 0 0 .5em 0;
  letter-spacing: -0.01em;
}
h1{ font-size: clamp(2.2rem, 4.4vw, 3.4rem); font-weight: 600; }
h2{ font-size: clamp(1.6rem, 2.6vw, 2.2rem); font-weight: 600; }
h3{ font-size: 1.2rem; font-weight: 600; }
p{ margin: 0 0 1em 0; max-width: 62ch; color: var(--ink-soft); }
a{ color: inherit; text-decoration: none; }
img{ max-width: 100%; display:block; }
ul{ margin:0; padding:0; list-style:none; }
button{ font-family: inherit; }

::selection{ background: rgba(25,168,91,.22); }

:focus-visible{
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

.container{
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 28px;
}

.visually-hidden{
  position:absolute; width:1px;height:1px;
  overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap;
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:.5em;
  padding: .85em 1.6em;
  font-weight: 600;
  font-size: .95rem;
  border-radius: var(--radius);
  border: 1.5px solid transparent;
  cursor:pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .2s ease, color .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn-primary{
  background: var(--charcoal-2);
  color: var(--white);
}
.btn-primary:hover{
  background: var(--deep-blue);
  transform: translateY(-1px);
}
.btn-accent{
  background: var(--energy-green);
  color: var(--white);
}
.btn-accent:hover{ background: var(--teal); transform: translateY(-1px); }
.btn-outline{
  background: transparent;
  border-color: var(--line-strong);
  color: var(--charcoal-2);
}
.btn-outline:hover{ border-color: var(--charcoal-2); }
.btn-ghost-light{
  background: transparent;
  border-color: rgba(255,255,255,.35);
  color: var(--white);
}
.btn-ghost-light:hover{ border-color: #fff; background: rgba(255,255,255,.08); }
.btn-block{ width:100%; justify-content:center; }

/* ---------- Logo (real brand artwork, cropped from source files) ---------- */
.logo{
  display:inline-flex;
  align-items:center;
  line-height: 1;
}
.logo-img{
  display:block;
  height: 42px;
  width: auto;
}
.site-footer .logo-img{ height: 34px; }
@media (max-width: 500px){
  .logo-img{ height: 34px; }
}

/* ---------- Header ---------- */
.site-header{
  position: sticky;
  top:0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height: 84px;
}
.nav-primary{
  display:flex;
  align-items:center;
  gap: 30px;
}
.nav-primary a{
  font-size: .92rem;
  font-weight: 500;
  color: var(--ink);
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
  transition: border-color .18s ease, color .18s ease;
}
.nav-primary a:hover,
.nav-primary a[aria-current="page"]{
  border-color: var(--energy-green);
  color: var(--charcoal-2);
}
.header-actions{
  display:flex;
  align-items:center;
  gap: 18px;
}
.header-phone{
  display:flex;
  align-items:center;
  gap:8px;
  font-weight:600;
  font-size:.92rem;
  color: var(--charcoal-2);
}
.header-phone svg{ flex-shrink:0; color: var(--teal); }
.nav-toggle{
  display:none;
  background:none;
  border:none;
  cursor:pointer;
  width: 40px; height:40px;
  align-items:center;
  justify-content:center;
}
.nav-toggle span, .nav-toggle::before, .nav-toggle::after{
  content:"";
  display:block;
  width:22px; height:2px;
  background: var(--charcoal-2);
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle span{ margin: 5px 0; }
.mobile-nav{
  display:none;
}

@media (max-width: 940px){
  .nav-primary{ display:none; }
  .header-phone{ display:none; }
  .nav-toggle{ display:flex; }
  .mobile-nav{
    position:fixed;
    inset: 84px 0 0 0;
    background: var(--white);
    padding: 20px 28px 40px;
    overflow-y:auto;
    transform: translateY(-8px);
    opacity:0;
    pointer-events:none;
    transition: opacity .2s ease, transform .2s ease;
  }
  .mobile-nav.is-open{
    opacity:1; transform:none; pointer-events:auto;
  }
  .mobile-nav a{
    display:block;
    padding: 16px 0;
    border-bottom: 1px solid var(--line);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--charcoal-2);
  }
  .mobile-nav .mobile-cta{ margin-top: 24px; }
  .mobile-nav .mobile-contact{
    margin-top: 24px;
    display:flex; flex-direction:column; gap:10px;
    font-weight:600;
  }
  body.nav-open{ overflow:hidden; }
  body.nav-open .nav-toggle span{ opacity:0; }
  body.nav-open .nav-toggle::before{ transform: translateY(7px) rotate(45deg); }
  body.nav-open .nav-toggle::after{ transform: translateY(-7px) rotate(-45deg); }
}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  background: var(--bg);
}
.hero .container{
  display:grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 48px;
  align-items:center;
  padding-top: 76px;
  padding-bottom: 76px;
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:.8rem;
  font-weight:600;
  color: var(--teal);
  margin-bottom: 18px;
}
.hero-eyebrow .dot{
  width:7px;height:7px;border-radius:50%;
  background: var(--energy-green);
}
.hero h1{ max-width: 15ch; }
.hero .lead{
  font-size: 1.12rem;
  color: var(--ink-soft);
  max-width: 46ch;
}
.hero-ctas{
  display:flex;
  flex-wrap:wrap;
  gap: 14px;
  margin-top: 30px;
}
.hero-trust{
  display:flex;
  flex-wrap:wrap;
  gap: 26px;
  margin-top: 44px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}
.hero-trust div{ }
.hero-trust strong{
  display:block;
  font-family:"Space Grotesk", sans-serif;
  font-size:1.3rem;
  color: var(--charcoal-2);
}
.hero-trust span{
  font-size:.8rem;
  color: var(--ink-soft);
}

.hero-panel{
  position:relative;
  aspect-ratio: 4/4.6;
  background: var(--charcoal-2);
  border-radius: 4px;
  overflow:hidden;
  isolation:isolate;
}
.hero-panel::before{
  content:"";
  position:absolute;
  inset: -20% -10%;
  background: var(--gradient);
  clip-path: polygon(58% 0, 100% 0, 100% 100%, 30% 100%);
  opacity:.92;
}
.hero-panel-grid{
  position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 34px 34px;
  mix-blend-mode: overlay;
}
.hero-panel svg{ position:absolute; inset:0; width:100%; height:100%; }
.hero-panel-caption{
  position:absolute;
  left:24px; right:24px; bottom:22px;
  color:#fff;
}
.hero-panel-caption p{
  color: rgba(255,255,255,.82);
  font-size:.85rem;
  margin:0;
  max-width: none;
}
.hero-panel-caption .tag-strip{
  display:flex; gap:14px; flex-wrap:wrap;
  margin-top:10px;
  font-size:.68rem;
  letter-spacing:.14em;
  font-weight:600;
  color: rgba(255,255,255,.7);
}

/* ---------- Sections ---------- */
section{ padding: 88px 0; }
.section-soft{ background: var(--bg-soft); }
.section-dark{ background: var(--charcoal-2); color: #fff; }
.section-dark h2, .section-dark h3{ color:#fff; }
.section-dark p{ color: rgba(255,255,255,.68); }

.section-head{
  max-width: 640px;
  margin-bottom: 52px;
}
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }
.kicker{
  display:inline-block;
  font-size:.78rem;
  font-weight:600;
  color: var(--teal);
  margin-bottom: 12px;
}
.section-dark .kicker{ color: var(--energy-green); }

/* Page header (interior pages) */
.page-hero{
  padding: 60px 0 54px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line);
}
.breadcrumb{
  font-size:.82rem;
  color: var(--ink-soft);
  margin-bottom: 18px;
}
.breadcrumb a{ color: var(--teal); font-weight:600; }
.page-hero h1{ max-width: 22ch; }
.page-hero .lead{ max-width: 60ch; font-size: 1.05rem; }

/* ---------- Grids / Cards ---------- */
.grid{ display:grid; gap: 26px; }
.grid-2{ grid-template-columns: repeat(2, 1fr); }
.grid-3{ grid-template-columns: repeat(3, 1fr); }
.grid-4{ grid-template-columns: repeat(4, 1fr); }
.grid-5{ grid-template-columns: repeat(5, 1fr); }

.block{
  border: 1px solid var(--line);
  background: var(--white);
  padding: 30px 28px;
  border-radius: var(--radius);
  transition: border-color .2s ease, transform .2s ease, background .2s ease;
}
.block:hover{
  border-color: var(--teal);
  transform: translateY(-3px);
}
.block .block-icon{
  width: 44px; height: 44px;
  margin-bottom: 20px;
  color: var(--teal);
}
.block h3{ margin-bottom: 10px; }
.block p{ margin-bottom: 0; font-size:.95rem; }
.block .block-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:16px;
  font-size:.85rem;
  font-weight:600;
  color: var(--deep-blue);
}

.block-dark{
  background: var(--charcoal-2);
  border-color: rgba(255,255,255,.1);
}
.block-dark h3{ color:#fff; }
.block-dark p{ color: rgba(255,255,255,.66); }
.block-dark:hover{ border-color: var(--energy-green); }

/* Process steps (legitimate sequence) */
.steps{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.step{
  padding: 30px 26px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  position:relative;
}
.step .step-index{
  font-family:"Space Grotesk", sans-serif;
  font-size:.8rem;
  font-weight:700;
  color: var(--energy-green);
  display:block;
  margin-bottom: 14px;
}
.step h3{ font-size:1.05rem; }
.step p{ font-size:.92rem; margin-bottom:0; }

/* Industries */
.industry{
  border: 1px solid var(--line);
  padding: 26px 24px;
  display:flex;
  flex-direction:column;
  gap:14px;
  transition: background .2s ease, border-color .2s ease;
}
.industry:hover{ background: var(--charcoal-2); border-color: var(--charcoal-2); }
.industry:hover h3, .industry:hover p{ color:#fff; }
.industry:hover p{ color: rgba(255,255,255,.66); }
.industry .block-icon{ color: var(--deep-blue); }
.industry:hover .block-icon{ color: var(--energy-green); }
.industry p{ font-size:.9rem; margin-bottom:0; }

/* Split content row */
.split{
  display:grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 60px;
  align-items:start;
}
.split.reverse{ grid-template-columns: 1.15fr .85fr; }
.split.reverse .split-visual{ order:2; }

.split-visual{
  border-radius: 4px;
  overflow:hidden;
  background: var(--charcoal-2);
  position:relative;
  min-height: 320px;
}
.split-visual svg{ position:absolute; inset:0; width:100%; height:100%; }

.list-check{ display:flex; flex-direction:column; gap: 14px; margin-top: 22px; }
.list-check li{
  display:flex;
  gap: 12px;
  align-items:flex-start;
  color: var(--ink);
  font-size:.96rem;
}
.list-check svg{ flex-shrink:0; margin-top:3px; color: var(--energy-green); }

/* Problem / stats strip */
.impact-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.12);
}
.impact-item{
  background: var(--charcoal-2);
  padding: 30px 26px;
}
.impact-item h3{ color:#fff; font-size:1rem; margin-bottom:8px; }
.impact-item p{ color: rgba(255,255,255,.62); font-size:.9rem; margin:0; }

/* Values / mission */
.tag-strip{
  display:flex; flex-wrap:wrap; gap: 10px 22px;
}
.tag-strip li{
  font-size:.78rem;
  font-weight:700;
  letter-spacing:.12em;
  text-transform:uppercase;
  color: var(--charcoal-2);
}
.tag-strip.on-dark li{ color: rgba(255,255,255,.85); }
.tag-strip li::after{ content:"•"; margin-left:22px; color: var(--line-strong); }
.tag-strip li:last-child::after{ content:""; margin:0; }
.tag-strip.on-dark li::after{ color: rgba(255,255,255,.3); }

/* CTA band */
.cta-band{
  background: var(--charcoal-2);
  position:relative;
  overflow:hidden;
  isolation:isolate;
}
.cta-band::before{
  content:"";
  position:absolute;
  right: -10%; top:-40%;
  width: 60%; height: 220%;
  background: var(--gradient);
  opacity:.85;
  clip-path: polygon(40% 0, 100% 0, 60% 100%, 0% 100%);
}
.cta-band .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 30px;
  flex-wrap:wrap;
  padding-top: 64px;
  padding-bottom: 64px;
}
.cta-band h2{ color:#fff; margin-bottom:8px; max-width: 16ch; }
.cta-band p{ color: rgba(255,255,255,.7); margin:0; max-width: 40ch; }
.cta-band .cta-actions{ display:flex; gap:14px; flex-wrap:wrap; }

/* Forms */
.form-card{
  background: var(--white);
  border: 1px solid var(--line);
  padding: 34px;
  border-radius: 4px;
}
.form-row{ display:grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field{ margin-bottom: 18px; }
.field label{
  display:block;
  font-size:.82rem;
  font-weight:600;
  color: var(--charcoal-2);
  margin-bottom: 7px;
}
.field input, .field select, .field textarea{
  width:100%;
  padding: .8em .9em;
  border: 1.5px solid var(--line-strong);
  border-radius: 3px;
  font-family: inherit;
  font-size: .95rem;
  color: var(--ink);
  background: var(--white);
  transition: border-color .18s ease;
}
.field input:focus, .field select:focus, .field textarea:focus{
  border-color: var(--teal);
  outline:none;
}
.field textarea{ resize: vertical; min-height: 120px; }
.form-note{ font-size:.8rem; color: var(--ink-soft); margin-top: 14px; }
.form-status{
  margin-top: 16px;
  font-size:.9rem;
  font-weight:600;
  display:none;
}
.form-status.is-visible{ display:block; }
.form-status.success{ color: var(--energy-green); }
.form-status.error{ color:#B3402A; }

/* Contact info list */
.contact-list{ display:flex; flex-direction:column; gap: 22px; }
.contact-list .item{ display:flex; gap:16px; align-items:flex-start; }
.contact-list .item .ic{
  width:42px; height:42px; flex-shrink:0;
  display:flex; align-items:center; justify-content:center;
  border: 1.5px solid var(--line-strong);
  border-radius: 3px;
  color: var(--teal);
}
.contact-list .item h3{ font-size:1rem; margin-bottom:4px; }
.contact-list .item p{ margin:0; font-size:.92rem; }
.contact-list .item a{ color: var(--deep-blue); font-weight:600; }

/* Table (products spec-style) */
.table-wrap{ overflow-x:auto; border:1px solid var(--line); }
table{ width:100%; border-collapse:collapse; min-width: 560px; }
th, td{
  text-align:left;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  font-size:.92rem;
}
th{
  background: var(--bg-soft);
  font-family:"Space Grotesk", sans-serif;
  font-weight:600;
  color: var(--charcoal-2);
}
tr:last-child td{ border-bottom:none; }

/* Footer */
.site-footer{
  background: var(--charcoal-2);
  color: rgba(255,255,255,.7);
  padding-top: 64px;
}
.footer-top{
  display:grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-brand p{ color: rgba(255,255,255,.6); margin-top: 18px; max-width: 34ch; }
.footer-col h4{
  color:#fff;
  font-family:"Space Grotesk", sans-serif;
  font-size:.85rem;
  letter-spacing:.06em;
  text-transform:uppercase;
  margin-bottom: 18px;
}
.footer-col ul{ display:flex; flex-direction:column; gap: 11px; }
.footer-col a{ font-size:.92rem; color: rgba(255,255,255,.66); transition: color .18s ease; }
.footer-col a:hover{ color: var(--energy-green); }
.footer-strip{
  display:flex; flex-wrap:wrap; gap: 14px 24px;
  padding: 22px 0;
  font-size:.78rem;
  letter-spacing:.1em;
  text-transform:uppercase;
  font-weight:700;
  color: rgba(255,255,255,.55);
}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap: 12px;
  padding: 22px 0 30px;
  border-top: 1px solid rgba(255,255,255,.1);
  font-size:.8rem;
  color: rgba(255,255,255,.45);
}
.social-row{ display:flex; gap:12px; }
.social-row a{
  width:34px; height:34px;
  border:1px solid rgba(255,255,255,.18);
  border-radius:3px;
  display:flex; align-items:center; justify-content:center;
  color: rgba(255,255,255,.7);
  transition: border-color .2s ease, color .2s ease;
}
.social-row a:hover{ border-color: var(--energy-green); color: var(--energy-green); }

/* Utility */
.mt-0{ margin-top:0; }
.text-center{ text-align:center; margin-left:auto; margin-right:auto; }

/* Reveal animation - single orchestrated hero entrance only */
.reveal-item{
  opacity:0;
  transform: translateY(14px);
  animation: reveal .7s ease forwards;
}
@keyframes reveal{ to{ opacity:1; transform:none; } }

/* Responsive */
@media (max-width: 980px){
  .hero .container{ grid-template-columns: 1fr; padding-top:48px; }
  .hero-panel{ order:-1; aspect-ratio: 16/10; }
  .split, .split.reverse{ grid-template-columns: 1fr; }
  .split.reverse .split-visual{ order:0; }
  .footer-top{ grid-template-columns: 1fr 1fr; }
  .steps{ grid-template-columns: repeat(2,1fr); }
  .grid-2, .grid-3, .grid-4, .grid-5{ grid-template-columns: repeat(2,1fr); }
  .impact-grid{ grid-template-columns: 1fr; }
  .form-row{ grid-template-columns: 1fr; }
}
@media (max-width: 620px){
  section{ padding: 60px 0; }
  .grid-2, .grid-3, .grid-4, .grid-5{ grid-template-columns: 1fr; }
  .steps{ grid-template-columns: 1fr; }
  .cta-band .container{ padding-top:48px; padding-bottom:48px; }
  .footer-top{ grid-template-columns: 1fr; }
}