/* ============================================================
   EnergyAISolutions — shared stylesheet
   Aesthetic: deep-tech / engineering. Charcoal canvas, electric
   lime energy accent, cyan AI accent, mono technical labels.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@600;700;800&family=Manrope:wght@300;400;500;600;700&family=Space+Mono:wght@400;700&display=swap');

:root{
  --bg:        #0a0d11;
  --bg-2:      #0f141a;
  --panel:     #131a21;
  --panel-2:   #182029;
  --line:      #243039;
  --line-soft: #1b242c;
  --ink:       #e8eef2;
  --ink-soft:  #9aa9b4;
  --ink-faint: #5f6f7a;
  --lime:      #c8ff2e;
  --lime-deep: #a4d800;
  --cyan:      #34e0d0;
  --amber:     #ffb347;
  --display:   'Syne', sans-serif;
  --body:      'Manrope', sans-serif;
  --mono:      'Space Mono', monospace;
  --maxw:      1200px;
  --ease:      cubic-bezier(.22,.61,.36,1);
}

*{ box-sizing:border-box; margin:0; padding:0; }

html{ scroll-behavior:smooth; }

body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--body);
  font-weight:400;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  /* subtle grid + glow atmosphere */
  background-image:
    radial-gradient(1100px 600px at 78% -10%, rgba(200,255,46,.10), transparent 60%),
    radial-gradient(900px 600px at -10% 20%, rgba(52,224,208,.07), transparent 55%),
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
  background-size: auto, auto, 46px 46px, 46px 46px;
  background-attachment: fixed, fixed, scroll, scroll;
}

a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }

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

/* ---------- type ---------- */
h1,h2,h3,h4{ font-family:var(--display); font-weight:700; line-height:1.04; letter-spacing:-.02em; }
.eyebrow{
  font-family:var(--mono); font-size:.72rem; letter-spacing:.32em;
  text-transform:uppercase; color:var(--lime); display:inline-block;
}
.eyebrow.cyan{ color:var(--cyan); }
.lede{ color:var(--ink-soft); font-size:1.06rem; max-width:62ch; }

/* ---------- header / nav ---------- */
.site-head{
  position:sticky; top:0; z-index:60;
  backdrop-filter:blur(14px);
  background:rgba(10,13,17,.72);
  border-bottom:1px solid var(--line-soft);
}
.nav{ display:flex; align-items:center; justify-content:space-between; height:74px; }
.brand{ display:flex; align-items:center; gap:12px; font-family:var(--display); font-weight:800; font-size:1.12rem; letter-spacing:-.02em; }
.brand .mark{
  width:34px; height:34px; border-radius:9px; flex:0 0 auto;
  background:conic-gradient(from 210deg, var(--lime), var(--cyan), var(--lime));
  position:relative; box-shadow:0 0 22px rgba(200,255,46,.35);
}
.brand .mark::after{
  content:""; position:absolute; inset:5px; border-radius:5px; background:var(--bg);
}
.brand .mark::before{
  content:""; position:absolute; inset:0; z-index:2;
  background:
    linear-gradient(var(--lime),var(--lime)) center/2px 14px no-repeat,
    linear-gradient(var(--lime),var(--lime)) center/14px 2px no-repeat;
  filter:none; opacity:.95; transform:scale(.55); mix-blend-mode:screen;
}
.brand b{ color:var(--lime); }
.nav-links{ display:flex; align-items:center; gap:6px; }
.nav-links a{
  font-size:.92rem; font-weight:500; color:var(--ink-soft);
  padding:9px 14px; border-radius:8px; transition:color .2s, background .2s;
}
.nav-links a:hover{ color:var(--ink); background:var(--panel); }
.nav-links a.active{ color:var(--lime); }
.nav-cta{
  font-family:var(--mono); font-size:.78rem; letter-spacing:.06em;
  border:1px solid var(--lime); color:var(--lime) !important;
  padding:9px 16px !important; border-radius:8px; margin-left:8px;
  transition:background .2s,color .2s,box-shadow .2s;
}
.nav-cta:hover{ background:var(--lime); color:var(--bg) !important; box-shadow:0 0 24px rgba(200,255,46,.4); }
.burger{ display:none; background:none; border:0; color:var(--ink); cursor:pointer; padding:8px; }
.burger svg{ width:26px; height:26px; }

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--mono); font-size:.82rem; letter-spacing:.04em;
  padding:13px 22px; border-radius:10px; cursor:pointer; border:1px solid transparent;
  transition:transform .2s var(--ease), box-shadow .25s, background .2s, color .2s;
}
.btn .arr{ transition:transform .2s var(--ease); }
.btn:hover .arr{ transform:translateX(4px); }
.btn-primary{ background:var(--lime); color:#0a0d11; font-weight:700; }
.btn-primary:hover{ box-shadow:0 10px 34px rgba(200,255,46,.32); transform:translateY(-2px); }
.btn-ghost{ border-color:var(--line); color:var(--ink); }
.btn-ghost:hover{ border-color:var(--lime); color:var(--lime); transform:translateY(-2px); }

/* ---------- hero / slideshow ---------- */
.hero{ position:relative; padding:64px 0 30px; }
.hero-grid{ display:grid; grid-template-columns:1.05fr .95fr; gap:48px; align-items:center; }
.hero h1{ font-size:clamp(2.6rem,5.4vw,4.5rem); margin:18px 0 22px; }
.hero h1 .g{ color:var(--lime); }
.hero h1 .c{ color:var(--cyan); }
.hero-actions{ display:flex; gap:14px; margin-top:30px; flex-wrap:wrap; }
.hero-stats{ display:flex; gap:30px; margin-top:44px; flex-wrap:wrap; }
.hero-stats .stat b{ font-family:var(--display); font-size:1.9rem; color:var(--ink); display:block; }
.hero-stats .stat span{ font-family:var(--mono); font-size:.7rem; letter-spacing:.18em; text-transform:uppercase; color:var(--ink-faint); }

/* slideshow */
.slides{
  position:relative; aspect-ratio:4/3.2; border-radius:18px; overflow:hidden;
  border:1px solid var(--line); background:var(--panel);
  box-shadow:0 30px 80px rgba(0,0,0,.5);
}
.slide{
  position:absolute; inset:0; opacity:0; transform:scale(1.06);
  transition:opacity 1.1s var(--ease), transform 6s linear;
  display:flex; flex-direction:column; justify-content:flex-end;
}
.slide.on{ opacity:1; transform:scale(1); z-index:2; }
.slide .ph{ position:absolute; inset:0; }              /* gradient fallback */
.slide img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; }
.slide .cap{
  position:relative; z-index:3; padding:22px 24px;
  background:linear-gradient(transparent, rgba(6,9,12,.92));
}
.slide .cap .k{ font-family:var(--mono); font-size:.68rem; letter-spacing:.2em; color:var(--lime); text-transform:uppercase; }
.slide .cap .t{ font-family:var(--display); font-weight:700; font-size:1.25rem; margin-top:4px; }
.slide-dots{ position:absolute; z-index:5; bottom:16px; right:18px; display:flex; gap:8px; }
.slide-dots button{ width:9px; height:9px; border-radius:50%; border:0; background:rgba(255,255,255,.32); cursor:pointer; padding:0; transition:.25s; }
.slide-dots button.on{ background:var(--lime); width:24px; border-radius:5px; }

/* diagram slides: show the WHOLE labeled diagram, no cropping */
.slides{ aspect-ratio:16/10.5; }
.slide.diag{ background:#eaeff4; }
.slide.diag img{ object-fit:contain; padding:6px; }
.ph-light{ background:#eaeff4; }

/* in-context diagram frame (service/product/ai pages) */
.diagram{
  background:#eef2f6; border:1px solid var(--line); border-radius:16px;
  overflow:hidden; box-shadow:0 22px 55px rgba(0,0,0,.4);
}
.diagram img{ width:100%; height:auto; display:block; }
.diagram .cap{ background:var(--panel); border-top:1px solid var(--line); padding:13px 18px; }
.diagram .cap .k{ font-family:var(--mono); font-size:.66rem; letter-spacing:.2em; text-transform:uppercase; color:var(--lime); }
.diagram .cap .t{ color:var(--ink-soft); font-size:.9rem; margin-top:3px; }
.feature-diagram{ margin-top:34px; }

/* gradient placeholders for project pictures */
.ph-1{ background:linear-gradient(135deg,#0b3d2e,#0a5d4a 45%,#12a98f); }
.ph-2{ background:linear-gradient(135deg,#13243d,#1f4f7a 50%,#34e0d0); }
.ph-3{ background:linear-gradient(135deg,#2a3a08,#5d7a0f 45%,#c8ff2e); }
.ph-4{ background:linear-gradient(135deg,#1a1430,#3a2a6a 50%,#7a5cff); }
.ph-5{ background:linear-gradient(135deg,#33240a,#7a5712 50%,#ffb347); }
.ph-grid{ background-image:
   linear-gradient(rgba(255,255,255,.10) 1px,transparent 1px),
   linear-gradient(90deg,rgba(255,255,255,.10) 1px,transparent 1px);
   background-size:30px 30px; }

/* ---------- sections ---------- */
section{ padding:84px 0; }
.sec-head{ max-width:64ch; margin-bottom:46px; }
.sec-head h2{ font-size:clamp(2rem,3.6vw,2.9rem); margin:14px 0 16px; }

/* ---------- cards ---------- */
.cards{ display:grid; gap:20px; }
.cards.c3{ grid-template-columns:repeat(3,1fr); }
.cards.c2{ grid-template-columns:repeat(2,1fr); }
.card{
  background:linear-gradient(180deg,var(--panel),var(--bg-2));
  border:1px solid var(--line); border-radius:16px; padding:30px 28px;
  position:relative; overflow:hidden; transition:transform .25s var(--ease), border-color .25s;
}
.card::before{
  content:""; position:absolute; top:0; left:0; right:0; height:3px;
  background:linear-gradient(90deg,var(--lime),var(--cyan)); transform:scaleX(0); transform-origin:left; transition:transform .35s var(--ease);
}
.card:hover{ transform:translateY(-5px); border-color:var(--line); }
.card:hover::before{ transform:scaleX(1); }
.card .ico{
  width:48px; height:48px; border-radius:12px; display:grid; place-items:center;
  background:var(--panel-2); border:1px solid var(--line); margin-bottom:18px;
}
.card .ico svg{ width:24px; height:24px; stroke:var(--lime); fill:none; stroke-width:1.6; }
.card h3{ font-size:1.3rem; margin-bottom:10px; }
.card p{ color:var(--ink-soft); font-size:.96rem; }
.card .tags{ display:flex; flex-wrap:wrap; gap:7px; margin-top:16px; }
.card .tags span{ font-family:var(--mono); font-size:.68rem; color:var(--ink-soft); border:1px solid var(--line); border-radius:99px; padding:4px 10px; }
.card .num{ position:absolute; top:22px; right:24px; font-family:var(--mono); font-size:.8rem; color:var(--ink-faint); }

/* feature list rows */
.flist{ display:grid; gap:14px; margin-top:18px; }
.flist li{ list-style:none; display:flex; gap:12px; align-items:flex-start; color:var(--ink-soft); font-size:.96rem; }
.flist li::before{ content:"▹"; color:var(--lime); flex:0 0 auto; }

/* ---------- detailed service block ---------- */
.svc{ display:grid; grid-template-columns:.9fr 1.1fr; gap:46px; align-items:center; padding:46px 0; border-top:1px solid var(--line-soft); }
.svc:nth-child(even){ grid-template-columns:1.1fr .9fr; }
.svc:nth-child(even) .svc-visual{ order:-1; }
.svc-visual{ aspect-ratio:4/3; border-radius:16px; border:1px solid var(--line); overflow:hidden; position:relative; box-shadow:0 20px 50px rgba(0,0,0,.4); }
.svc h3{ font-size:1.9rem; margin:12px 0 14px; }

/* ---------- band / cta ---------- */
.band{
  margin:0; border-top:1px solid var(--line-soft); border-bottom:1px solid var(--line-soft);
  background:linear-gradient(120deg, rgba(200,255,46,.06), rgba(52,224,208,.05));
}
.cta-box{ text-align:center; max-width:60ch; margin:0 auto; }
.cta-box h2{ font-size:clamp(2rem,4vw,3rem); margin-bottom:18px; }

/* ---------- about ---------- */
.about-grid{ display:grid; grid-template-columns:1.2fr .8fr; gap:48px; align-items:start; }
.exp-list{ display:grid; gap:0; border:1px solid var(--line); border-radius:16px; overflow:hidden; }
.exp-list .row{ display:flex; justify-content:space-between; gap:18px; padding:18px 22px; border-bottom:1px solid var(--line-soft); }
.exp-list .row:last-child{ border-bottom:0; }
.exp-list .row b{ font-family:var(--display); }
.exp-list .row span{ font-family:var(--mono); font-size:.78rem; color:var(--lime); }

/* ---------- contact form ---------- */
.form{ display:grid; gap:16px; }
.form .field label{ font-family:var(--mono); font-size:.72rem; letter-spacing:.14em; text-transform:uppercase; color:var(--ink-faint); display:block; margin-bottom:7px; }
.form input,.form textarea,.form select{
  width:100%; background:var(--panel); border:1px solid var(--line); border-radius:10px;
  color:var(--ink); padding:13px 15px; font-family:var(--body); font-size:.96rem; transition:border-color .2s, box-shadow .2s;
}
.form input:focus,.form textarea:focus,.form select:focus{ outline:0; border-color:var(--lime); box-shadow:0 0 0 3px rgba(200,255,46,.14); }
.form .two{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.note{ font-family:var(--mono); font-size:.74rem; color:var(--ink-faint); }

/* ---------- footer ---------- */
.site-foot{ border-top:1px solid var(--line-soft); padding:56px 0 34px; background:var(--bg-2); }
.foot-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:34px; }
.foot-grid h4{ font-family:var(--mono); font-weight:700; font-size:.74rem; letter-spacing:.18em; text-transform:uppercase; color:var(--ink-faint); margin-bottom:16px; }
.foot-grid a{ display:block; color:var(--ink-soft); font-size:.92rem; padding:5px 0; transition:color .2s; }
.foot-grid a:hover{ color:var(--lime); }
.foot-grid p{ color:var(--ink-soft); font-size:.92rem; }
.foot-bottom{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; margin-top:42px; padding-top:22px; border-top:1px solid var(--line-soft); }
.foot-bottom span{ font-family:var(--mono); font-size:.76rem; color:var(--ink-faint); }

/* ---------- page hero (interior) ---------- */
.page-hero{ padding:70px 0 20px; }
.page-hero h1{ font-size:clamp(2.4rem,5vw,3.8rem); margin:16px 0 18px; }

/* ---------- reveal animation ---------- */
.js .reveal{ opacity:0; transform:translateY(26px); transition:opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in{ opacity:1; transform:none; }

/* ---------- responsive ---------- */
@media (max-width:920px){
  .hero-grid,.svc,.svc:nth-child(even),.about-grid{ grid-template-columns:1fr; }
  .svc:nth-child(even) .svc-visual{ order:0; }
  .cards.c3,.cards.c2{ grid-template-columns:1fr; }
  .foot-grid{ grid-template-columns:1fr 1fr; }
  .nav-links{
    position:fixed; inset:74px 0 auto 0; flex-direction:column; align-items:stretch;
    background:var(--bg-2); border-bottom:1px solid var(--line); padding:14px 20px 22px;
    gap:4px; transform:translateY(-130%); transition:transform .35s var(--ease); z-index:50;
  }
  .nav-links.open{ transform:translateY(0); }
  .nav-links a{ padding:13px 12px; }
  .burger{ display:block; }
}
@media (max-width:560px){
  .form .two{ grid-template-columns:1fr; }
  .foot-grid{ grid-template-columns:1fr; }
  .hero-stats{ gap:22px; }
}