/* ==========================================================================
   Evolve Energy Technologies — site styles
   Self-contained, no framework. Brand accent: #32cd32
   ========================================================================== */

:root{
  --green:#32cd32;
  --green-dark:#28a428;
  --ink:#1b262c;
  --ink-2:#12191d;
  --muted:#869791;
  --line:#e0e0e0;
  --paper:#ffffff;
  --paper-2:#f9f9f9;
  --radius:6px;
  --maxw:1140px;
  --nav-h:72px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:var(--nav-h)}
body{
  margin:0;
  font-family:'Roboto',Cantarell,Arial,sans-serif;
  color:#2b2f33;
  background:var(--paper);
  line-height:1.65;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:'Caladea',Georgia,serif;font-weight:700;line-height:1.2;color:var(--ink)}
h1{font-size:clamp(2.1rem,5vw,3.6rem);margin:0 0 .4em}
h2{font-size:clamp(1.7rem,3.5vw,2.6rem);margin:0 0 .5em}
h3{font-size:1.35rem;margin:0 0 .5em}
a{color:var(--green-dark);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
p{margin:0 0 1rem}

.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:84px 0}
.section--tint{background:var(--paper-2)}
.section--dark{background:var(--ink);color:#e8edf0}
.section--dark h2,.section--dark h3{color:#fff}
.section-head{text-align:center;max-width:760px;margin:0 auto 52px}
.section-head .rule{width:64px;height:4px;background:var(--green);border:0;margin:18px auto 0;border-radius:3px}
.eyebrow{color:var(--green);font-weight:700;letter-spacing:.14em;text-transform:uppercase;font-size:.8rem;margin-bottom:.6rem}

/* ---------- Buttons ---------- */
.btn{
  display:inline-block;background:var(--green);color:#fff;font-weight:600;
  padding:14px 30px;border-radius:var(--radius);border:2px solid var(--green);
  cursor:pointer;transition:.18s ease;font-size:1rem;text-align:center;
}
.btn:hover{background:var(--green-dark);border-color:var(--green-dark);text-decoration:none}
.btn--ghost{background:transparent;color:var(--green)}
.btn--ghost:hover{background:var(--green);color:#fff}

/* ---------- Header / nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:900;height:var(--nav-h);
  display:flex;align-items:center;
  background:rgba(18,25,29,.30);backdrop-filter:blur(4px);
  transition:background .25s ease,box-shadow .25s ease;
}
.nav.scrolled{background:var(--ink);box-shadow:0 2px 14px rgba(0,0,0,.25)}
.nav .container{display:flex;align-items:center;justify-content:space-between;width:100%}
.nav__brand{display:flex;align-items:center;gap:12px}
.nav__brand img{height:42px;width:auto}
.nav__brand span{color:#fff;font-family:'Caladea',serif;font-weight:700;font-size:1.05rem;white-space:nowrap}
.nav__links{display:flex;gap:6px;list-style:none;margin:0;padding:0;align-items:center}
.nav__links a{color:#e8edf0;font-size:.92rem;padding:8px 12px;border-radius:4px;transition:.15s}
.nav__links a:hover{color:#fff;background:rgba(255,255,255,.10);text-decoration:none}
.nav__toggle{display:none;background:none;border:0;cursor:pointer;padding:8px}
.nav__toggle span{display:block;width:26px;height:3px;background:#fff;margin:5px 0;border-radius:2px;transition:.2s}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;color:#fff;overflow:hidden}
.hero__video,.hero__poster{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.45),rgba(0,0,0,.55));z-index:-1}
.hero__inner{max-width:820px;padding:120px 24px 80px}
.hero h1{color:#fff;text-shadow:0 2px 18px rgba(0,0,0,.4)}
.hero p.lead{font-size:1.35rem;color:#eef3f0;margin-bottom:2rem}

/* ---------- About ---------- */
.about{position:relative;color:#fff;text-align:center}
.about__bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2}
.about::after{content:"";position:absolute;inset:0;background:rgba(18,25,29,.72);z-index:-1}
.about .container{padding-top:96px;padding-bottom:96px;position:relative}
.about h2{color:#fff}
.about p{max-width:760px;margin:0 auto 1rem;font-size:1.12rem;color:#eef3f0}
.about .q{font-family:'Caladea',serif;font-size:1.4rem;color:var(--green);margin-top:1.4rem}

/* ---------- Cards / Technology ---------- */
.grid{display:grid;gap:28px}
.grid--3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:.2s;box-shadow:0 1px 3px rgba(0,0,0,.05)}
.card:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(0,0,0,.12)}
.card__media{aspect-ratio:16/10;overflow:hidden;background:#eee}
.card__media img{width:100%;height:100%;object-fit:cover;transition:.4s}
.card:hover .card__media img{transform:scale(1.05)}
.card__body{padding:26px;flex:1;display:flex;flex-direction:column}
.card__body p{color:#4a5157;font-size:.98rem}
.card__body .btn{margin-top:auto;align-self:flex-start}

/* ---------- FAQ accordion ---------- */
.faq{max-width:860px;margin:0 auto}
.faq__item{border:1px solid var(--line);border-radius:var(--radius);margin-bottom:14px;background:var(--paper);overflow:hidden}
.faq__q{width:100%;text-align:left;background:none;border:0;cursor:pointer;padding:20px 24px;font-size:1.1rem;font-weight:600;color:var(--ink);font-family:'Caladea',serif;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq__q:hover{color:var(--green-dark)}
.faq__q .chev{flex:0 0 auto;width:14px;height:14px;border-right:2px solid var(--green);border-bottom:2px solid var(--green);transform:rotate(45deg);transition:transform .25s}
.faq__item.open .chev{transform:rotate(-135deg)}
.faq__a{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 24px}
.faq__item.open .faq__a{max-height:1200px;padding-bottom:22px}
.faq__a ul{margin:.2rem 0 1rem;padding-left:1.2rem}
.faq__a li{margin-bottom:.4rem}

/* ---------- AutoGuard section ---------- */
.media-row{display:grid;grid-template-columns:1.1fr 1fr;gap:44px;align-items:center}
.media-row video{width:100%;border-radius:var(--radius);background:#000;display:block}
.spec-table{width:100%;border-collapse:collapse;margin-top:14px;font-size:.94rem}
.spec-table th,.spec-table td{text-align:left;padding:10px 12px;border-bottom:1px solid rgba(255,255,255,.14)}
.spec-table th{color:var(--green);font-weight:700}
.checklist{list-style:none;padding:0;margin:0 0 1.2rem}
.checklist li{padding-left:30px;position:relative;margin-bottom:.55rem}
.checklist li::before{content:"";position:absolute;left:0;top:6px;width:8px;height:14px;border-right:3px solid var(--green);border-bottom:3px solid var(--green);transform:rotate(45deg)}

/* ---------- Parallax banner ---------- */
.banner{position:relative;color:#fff;text-align:center;padding:90px 24px;background-size:cover;background-position:center;background-attachment:fixed}
.banner::after{content:"";position:absolute;inset:0;background:rgba(18,25,29,.6)}
.banner .container{position:relative;z-index:1}

/* ---------- Gallery ---------- */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.gallery button{padding:0;border:0;cursor:pointer;background:#000;border-radius:4px;overflow:hidden;aspect-ratio:1/1}
.gallery img{width:100%;height:100%;object-fit:cover;transition:.3s;opacity:.92}
.gallery button:hover img{opacity:1;transform:scale(1.06)}
.lightbox{position:fixed;inset:0;z-index:1000;background:rgba(0,0,0,.92);display:none;align-items:center;justify-content:center}
.lightbox.open{display:flex}
.lightbox img{max-width:92vw;max-height:86vh;object-fit:contain;border-radius:4px}
.lightbox__btn{position:absolute;background:rgba(255,255,255,.12);border:0;color:#fff;font-size:2rem;width:54px;height:54px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center}
.lightbox__btn:hover{background:var(--green)}
.lb-prev{left:24px;top:50%;transform:translateY(-50%)}
.lb-next{right:24px;top:50%;transform:translateY(-50%)}
.lb-close{top:24px;right:24px;font-size:1.5rem}

/* ---------- Downloads ---------- */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.dl-card{background:var(--paper);border:1px solid var(--line);border-top:4px solid var(--green);border-radius:var(--radius);padding:30px;display:flex;flex-direction:column}
.dl-card h3{margin-bottom:.3rem}
.dl-card .sub{color:var(--muted);font-size:.86rem;margin-bottom:1rem}
.dl-card ul{padding-left:1.1rem;margin:.4rem 0 1.2rem;color:#4a5157;font-size:.92rem}
.dl-card .btn{margin-top:auto;align-self:flex-start}
.dl-icon{font-size:2rem;color:var(--green);margin-bottom:.5rem}

/* ---------- Contact ---------- */
.contact-wrap{max-width:720px;margin:0 auto;text-align:center}
.contact-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:44px;box-shadow:0 6px 24px rgba(0,0,0,.06)}
.contact-card .btn{font-size:1.15rem;padding:16px 44px;margin-top:.6rem}
.contact-detail{margin-top:1.4rem;color:var(--muted);font-size:.95rem}
.contact-detail a{font-weight:600}

/* ---------- Footer ---------- */
.footer{background:var(--ink-2);color:#aeb8bd;padding:48px 0 34px;text-align:center}
.footer img{height:40px;margin:0 auto 18px}
.footer__links{list-style:none;display:flex;flex-wrap:wrap;justify-content:center;gap:8px 22px;padding:0;margin:0 0 22px}
.footer__links a{color:#cdd6da;font-size:.9rem}
.footer__links a:hover{color:var(--green)}
.footer small{color:#6f7c82}

/* ---------- Sub-page hero ---------- */
.subhero{background:var(--ink);color:#fff;text-align:center;padding:calc(var(--nav-h) + 60px) 24px 60px}
.subhero h1{color:#fff}
.subhero p{color:#c9d3d8;max-width:680px;margin:0 auto}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .grid--3,.dl-grid{grid-template-columns:1fr}
  .media-row{grid-template-columns:1fr;gap:28px}
  .gallery{grid-template-columns:repeat(3,1fr)}
  .banner{background-attachment:scroll}
}
@media(max-width:720px){
  .section{padding:60px 0}
  .nav__toggle{display:block}
  .nav__links{
    position:absolute;top:var(--nav-h);left:0;right:0;flex-direction:column;
    align-items:stretch;gap:0;background:var(--ink);padding:8px 0;
    max-height:0;overflow:hidden;transition:max-height .3s ease;
  }
  .nav.open .nav__links{max-height:520px}
  .nav__links a{padding:14px 24px;border-radius:0}
  .nav__brand span{display:none}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .hero p.lead{font-size:1.1rem}
}