/* RTU-X Energy — static site styles (clean, modern, subtle) */
:root{
  --bg:#0b1020;
  --card:#0f1730cc;
  --cardSolid:#0f1730;
  --text:#eaf0ff;
  --muted:#b7c3e3;
  --line:#223055;
  --accent:#66e3ff;
  --accent2:#6cff9b;
  --shadow: 0 18px 45px rgba(0,0,0,.35);
  --radius: 18px;
  --radius2: 24px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}

a{color:inherit; text-decoration:none}
.container{width:min(1120px, 92vw); margin:0 auto}
.small{font-size:.9rem}

.bg{
  position:fixed; inset:0; z-index:-1;
  background: radial-gradient(1000px 700px at 15% 10%, rgba(102,227,255,.18), transparent 55%),
              radial-gradient(1000px 700px at 85% 25%, rgba(108,255,155,.14), transparent 55%),
              linear-gradient(180deg, #070a14 0%, #0b1020 45%, #0b1020 100%);
}
.grid-overlay{
  position:absolute; inset:0;
  background-image: linear-gradient(to right, rgba(255,255,255,.05) 1px, transparent 1px),
                    linear-gradient(to bottom, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 70px 70px;
  opacity:.12;
  mask-image: radial-gradient(circle at 50% 20%, black 0%, transparent 70%);
}
.glow{position:absolute; filter: blur(60px); opacity:.55}
.glow-a{width:520px; height:520px; left:-120px; top:80px; background:rgba(102,227,255,.25)}
.glow-b{width:520px; height:520px; right:-120px; top:260px; background:rgba(108,255,155,.18)}

.hero{padding:28px 0 42px}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  gap:16px; padding:10px 0 24px;
}
.brand{display:flex; align-items:center; gap:12px}
.logo{height:46px; width:auto; display:block}
.nav-actions{display:flex; align-items:center; gap:14px; flex-wrap:wrap; justify-content:flex-end}
.nav-link{color:var(--muted); font-weight:500; font-size:.95rem}
.nav-link:hover{color:var(--text)}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  border-radius: 999px; padding: 12px 16px;
  border:1px solid transparent;
  font-weight:600; letter-spacing:.2px;
  transition: transform .12s ease, background .12s ease, border-color .12s ease, opacity .12s ease;
  cursor:pointer;
}
.btn:active{transform: translateY(1px)}
.btn-primary{background: linear-gradient(135deg, rgba(102,227,255,.95), rgba(108,255,155,.95)); color:#071021}
.btn-secondary{background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.14); color:var(--text)}
.btn-ghost{background: rgba(255,255,255,.02); border-color: rgba(255,255,255,.14); color:var(--text)}
.btn:hover{opacity:.94}

.hero-grid{display:grid; grid-template-columns: 1.2fr .8fr; gap:24px; align-items:stretch}
@media (max-width: 900px){
  .hero-grid{grid-template-columns: 1fr; }
  .nav{flex-direction:column; align-items:flex-start}
  .nav-actions{justify-content:flex-start}
}

.pill{
  display:inline-flex; gap:8px; align-items:center;
  border:1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.04);
  padding:8px 12px; border-radius:999px;
  color:var(--muted); font-weight:600; font-size:.85rem;
}
h1{margin:14px 0 12px; font-size: clamp(2.0rem, 3.2vw, 3.2rem); line-height:1.05}
.accent{background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.sub{margin:0 0 18px; color:var(--muted); font-size:1.05rem; line-height:1.55}
.cta-row{display:flex; gap:12px; flex-wrap:wrap; margin:18px 0 18px}

.trust{
  display:grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap:12px; margin-top:14px;
}
@media (max-width: 650px){ .trust{grid-template-columns:1fr} }
.trust-item{
  border:1px solid rgba(255,255,255,.12);
  background: rgba(15,23,48,.55);
  border-radius: var(--radius);
  padding:14px 14px;
}
.kpi{font-weight:800; font-size:1.25rem}
.kpi-label{color:var(--muted); font-size:.9rem; margin-top:6px}
.fineprint{color:rgba(183,195,227,.75); font-size:.85rem; margin-top:12px}

.section{padding:56px 0}
.section-head{max-width:760px; margin-bottom:18px}
h2{margin:0 0 10px; font-size: clamp(1.6rem, 2.2vw, 2.2rem)}
.section-head p{margin:0; color:var(--muted); line-height:1.6}

.cards{
  display:grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap:14px; margin-top:18px;
}
@media (max-width: 900px){ .cards{grid-template-columns:1fr} }

.card{
  border:1px solid rgba(255,255,255,.12);
  background: rgba(15,23,48,.55);
  border-radius: var(--radius2);
  padding:18px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}
.card h3{margin:0 0 10px; font-size:1.1rem}
.card p{margin:0; color:var(--muted); line-height:1.6}

.hero-card .card{height:100%}
.checklist{list-style:none; padding:0; margin:10px 0 0}
.checklist li{display:flex; gap:10px; align-items:flex-start; padding:8px 0; color:var(--muted)}
.checklist li span{color:var(--accent2); font-weight:900}
.mini-note{margin-top:14px; padding:12px; border-radius:14px; background: rgba(255,255,255,.05); border:1px solid rgba(255,255,255,.12); color:var(--muted)}

.roi-grid{
  display:grid; grid-template-columns: 1fr 1fr; gap:14px; margin-top:18px;
}
@media (max-width: 900px){ .roi-grid{grid-template-columns:1fr} }

.contact-grid{
  display:grid; grid-template-columns: 1fr 1fr; gap:14px; margin-top:18px;
}
@media (max-width: 900px){ .contact-grid{grid-template-columns:1fr} }

.form{display:grid; gap:12px}
.field label{display:block; font-weight:700; font-size:.92rem; margin-bottom:6px}
.field input, .field select, .field textarea{
  width:100%;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(0,0,0,.25);
  color: var(--text);
  outline:none;
}
.field input::placeholder, .field textarea::placeholder{color: rgba(183,195,227,.65)}
.hint{color: rgba(183,195,227,.72); font-size:.85rem; margin-top:6px; line-height:1.35}
.input{display:flex; align-items:center; gap:8px}
.input span{color: rgba(183,195,227,.8); font-weight:700}
.form-actions{display:flex; gap:10px; flex-wrap:wrap}

.results{min-height:230px}
.results-empty{color:var(--muted)}
.results-grid{
  display:grid; grid-template-columns: 1fr 1fr; gap:12px; margin-top:14px;
}
@media (max-width: 520px){ .results-grid{grid-template-columns:1fr} }
.stat{
  padding:14px; border-radius: 16px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.18);
}
.stat .label{color: rgba(183,195,227,.78); font-size:.85rem}
.stat .value{font-weight:800; font-size:1.2rem; margin-top:6px}
.badge{
  display:inline-flex; align-items:center; gap:8px;
  border:1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.05);
  padding:8px 10px; border-radius:999px;
  font-weight:700; color:var(--muted);
}
.badge strong{color: var(--text)}
.muted{color: var(--muted)}
.email-box{margin-top:16px; border-top:1px solid rgba(255,255,255,.12); padding-top:14px}
.email-row{display:flex; gap:10px; flex-wrap:wrap}
.email-row input{flex: 1 1 260px}
.divider{height:1px; background: rgba(255,255,255,.12); margin:16px 0}
.steps{margin:0; padding-left:18px; color:var(--muted); line-height:1.7}

.footer{
  border-top:1px solid rgba(255,255,255,.12);
  padding:18px 0;
  background: rgba(0,0,0,.22);
}
.footer-inner{display:flex; align-items:center; justify-content:space-between; gap:14px; flex-wrap:wrap}
.footer-links{display:flex; gap:14px}
.footer-links a{color:var(--muted)}
.footer-links a:hover{color:var(--text)}

/* subtle animation */
.reveal{opacity:0; transform: translateY(10px); transition: opacity .5s ease, transform .5s ease}
.reveal.show{opacity:1; transform: translateY(0)}