/* Greenergytec — site styles
   Layout: dark slate header and footer framing light, airy content bands;
   full-bleed photo bands for hero, vision and contact. */
:root {
  --ink: #0e1c22;          /* deep slate, header/footer/dark bands */
  --ink-2: #16282f;
  --paper: #f5f8f6;        /* cool off-white with a green bias */
  --surface: #ffffff;
  --line: #d8e2de;
  --text: #17262c;
  --muted: #56686d;
  --green: #2f9d55;        /* brand green */
  --green-deep: #1f7a40;
  --mint: #bfe8cc;         /* green for labels on dark */
  --on-dark: #e9f0ed;
  --on-dark-muted: #a9bab5;

  --font-display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Source Sans 3", "Segoe UI", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --wrap: 1180px;
  --radius: 6px;
  --header-h: 76px;
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--green-deep); }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
}
h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.1;
  margin: 0;
  text-wrap: balance;
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(2.3rem, 5.2vw, 4rem); font-weight: 800; font-stretch: 112%; }
h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); font-weight: 750; font-stretch: 108%; }
h3 { font-size: 1.25rem; font-weight: 700; }
p { margin: 0; }

.wrap {
  max-width: var(--wrap);
  margin-inline: auto;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green-deep);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before { content: ""; width: 22px; height: 2px; background: currentColor; }
.on-dark .eyebrow { color: var(--mint); }
.prose { display: grid; gap: 1.1em; max-width: 64ch; color: var(--muted); }
.prose strong { color: var(--text); }
.on-dark .prose { color: var(--on-dark-muted); }

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-display); font-weight: 700; font-size: 0.95rem;
  letter-spacing: 0.04em; text-transform: uppercase; text-decoration: none;
  padding: 14px 22px; border-radius: var(--radius);
  background: var(--green); color: #fff; border: 0; cursor: pointer;
  transition: background .2s ease, transform .2s ease;
}
.btn:hover { background: var(--green-deep); }
.btn .arrow { transition: transform .2s ease; }
.btn:hover .arrow { transform: translateX(4px); }
.btn-ghost { background: transparent; color: var(--on-dark); box-shadow: inset 0 0 0 1.5px rgba(233,240,237,.55); }
.btn-ghost:hover { background: rgba(233,240,237,.1); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(14, 28, 34, 0.94);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid rgba(233,240,237,.08);
}
.bar { display: flex; align-items: center; justify-content: space-between; min-height: var(--header-h); gap: 24px; }
.brand img { height: 46px; width: auto; }
.nav ul { list-style: none; margin: 0; padding: 0; }
.nav > ul { display: flex; align-items: center; gap: 4px; }
.nav a, .nav .sub-toggle {
  display: block; color: var(--on-dark); text-decoration: none;
  font-family: var(--font-display); font-size: 0.86rem; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  padding: 10px 12px; border-radius: 4px; background: none; border: 0; cursor: pointer;
}
.nav a:hover, .nav .sub-toggle:hover { color: var(--mint); }
.nav a[aria-current="page"] { color: var(--mint); }
.has-sub { position: relative; }
.sub-toggle { display: inline-flex !important; align-items: center; gap: 6px; }
.sub-toggle svg { transition: transform .2s ease; }
.has-sub.open .sub-toggle svg { transform: rotate(180deg); }
.submenu {
  position: absolute; top: calc(100% + 6px); left: 0; min-width: 220px;
  background: var(--ink-2); border: 1px solid rgba(233,240,237,.1);
  border-radius: var(--radius); padding: 8px;
  box-shadow: 0 18px 40px rgba(0,0,0,.35);
  opacity: 0; visibility: hidden; transform: translateY(-4px);
  transition: opacity .18s ease, transform .18s ease, visibility .18s;
}
.has-sub.open .submenu,
.has-sub:hover .submenu,
.has-sub:focus-within .submenu { opacity: 1; visibility: visible; transform: none; }
.menu-toggle {
  display: none; background: none; border: 1px solid rgba(233,240,237,.3);
  color: var(--on-dark); border-radius: 4px; padding: 9px 12px; cursor: pointer;
  font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: .1em; text-transform: uppercase;
}

@media (max-width: 960px) {
  .menu-toggle { display: inline-block; }
  .nav {
    position: absolute; left: 0; right: 0; top: 100%;
    background: var(--ink); border-bottom: 1px solid rgba(233,240,237,.1);
    padding: 8px max(20px, env(safe-area-inset-left, 0px)) 20px;
    display: none;
  }
  .nav.open { display: block; }
  .nav > ul { flex-direction: column; align-items: stretch; gap: 0; }
  .nav a, .nav .sub-toggle { padding: 14px 4px; border-bottom: 1px solid rgba(233,240,237,.07); width: 100%; text-align: left; }
  .submenu {
    position: static; opacity: 1; visibility: visible; transform: none;
    box-shadow: none; border: 0; background: none; padding: 0 0 0 16px; display: none;
  }
  .has-sub:hover .submenu { display: none; }
  .has-sub.open .submenu { display: block; }
}

/* ---------- Home hero ---------- */
.hero {
  position: relative; isolation: isolate; color: var(--on-dark);
  min-height: min(88vh, 760px); display: flex; align-items: flex-end;
  background: var(--ink); overflow: hidden;
}
.hero-slides { position: absolute; inset: 0; z-index: -2; }
.hero-slides img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  opacity: 0; transition: opacity 1s ease;
}
.hero-slides img.active { opacity: 1; }
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(180deg, rgba(14,28,34,.35) 0%, rgba(14,28,34,.25) 40%, rgba(14,28,34,.92) 100%),
    linear-gradient(90deg, rgba(14,28,34,.7) 0%, rgba(14,28,34,0) 65%);
}
.hero-inner { padding-block: 120px 72px; display: grid; gap: 28px; width: 100%; }
.hero-logo { width: min(360px, 70vw); height: auto; }
.hero h1 { max-width: 15ch; }
.hero h1 span { color: var(--mint); display: block; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-meta {
  display: flex; flex-wrap: wrap; gap: 10px 28px; margin-top: 12px;
  padding-top: 22px; border-top: 1px solid rgba(233,240,237,.18);
  font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: .08em;
  text-transform: uppercase; color: var(--on-dark-muted);
}
.hero-meta b { color: var(--on-dark); font-weight: 500; }

/* ---------- Page hero (product pages) ---------- */
.page-hero {
  position: relative; isolation: isolate; color: var(--on-dark); background: var(--ink);
  overflow: hidden;
}
.page-hero > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; }
.page-hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(90deg, rgba(14,28,34,.92) 0%, rgba(14,28,34,.6) 55%, rgba(14,28,34,.25) 100%);
}
.page-hero .wrap { padding-block: 120px 80px; display: grid; gap: 18px; }
.page-hero h1 { max-width: 16ch; }
.page-hero .lede { max-width: 54ch; color: var(--on-dark-muted); font-size: 1.15rem; }

/* ---------- Sections ---------- */
.section { padding-block: clamp(64px, 9vw, 112px); }
.section-head { display: grid; gap: 14px; margin-bottom: 40px; max-width: 60ch; }
.split {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(32px, 6vw, 80px); align-items: center;
}
.split > * { min-width: 0; }
.split .copy { display: grid; gap: 22px; }
.split.reverse .media { order: -1; }
.media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: var(--radius); }
.media.tall img { aspect-ratio: 4 / 5; }
@media (max-width: 860px) {
  .split { grid-template-columns: minmax(0, 1fr); }
  .split.reverse .media { order: 0; }
}

.band-dark { background: var(--ink); color: var(--on-dark); }
.band-photo { position: relative; isolation: isolate; color: var(--on-dark); background: var(--ink); overflow: hidden; }
.band-photo > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; }
.band-photo::after { content: ""; position: absolute; inset: 0; z-index: -1; background: rgba(14,28,34,.82); }
.statement {
  font-family: var(--font-display); font-weight: 600; font-stretch: 104%;
  font-size: clamp(1.4rem, 2.6vw, 2rem); line-height: 1.3; color: var(--on-dark);
  max-width: 30ch; text-wrap: balance;
}
.vision-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 80px); align-items: start; }
.vision-grid > * { min-width: 0; }
@media (max-width: 860px) { .vision-grid { grid-template-columns: minmax(0, 1fr); } }

/* Product cards */
.product-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
@media (max-width: 900px) { .product-grid { grid-template-columns: minmax(0, 1fr); } }
.product-card {
  position: relative; isolation: isolate; display: flex; flex-direction: column; justify-content: flex-end;
  min-height: 340px; padding: 26px; border-radius: var(--radius); overflow: hidden;
  color: var(--on-dark); text-decoration: none; background: var(--ink);
}
.product-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; transition: transform .6s ease; }
.product-card::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, rgba(14,28,34,0) 25%, rgba(14,28,34,.9) 100%); }
.product-card:hover img { transform: scale(1.04); }
.product-card .label { font-family: var(--font-mono); font-size: .75rem; letter-spacing: .14em; text-transform: uppercase; color: var(--mint); }
.product-card h3 { font-size: 1.5rem; font-stretch: 108%; margin-top: 6px; }
.product-card .more { margin-top: 14px; font-family: var(--font-display); font-weight: 700; font-size: .85rem; letter-spacing: .08em; text-transform: uppercase; display: inline-flex; gap: 8px; }

/* Partner carousel */
.partners { background: var(--surface); border-block: 1px solid var(--line); }
.marquee {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee-track { display: flex; gap: 20px; width: max-content; animation: scroll 38s linear infinite; }
.marquee:hover .marquee-track, .marquee:focus-within .marquee-track { animation-play-state: paused; }
@keyframes scroll { to { transform: translateX(calc(-50% - 10px)); } }
.logo-tile {
  flex: 0 0 auto; width: 220px; height: 120px; display: grid; place-items: center;
  padding: 22px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  transition: border-color .2s ease, transform .2s ease;
}
.logo-tile:hover { border-color: var(--green); transform: translateY(-2px); }
.logo-tile img { max-height: 70px; max-width: 100%; width: auto; object-fit: contain; filter: grayscale(1); opacity: .8; transition: filter .2s, opacity .2s; }
.logo-tile:hover img { filter: none; opacity: 1; }
@media (prefers-reduced-motion: reduce) {
  .marquee { -webkit-mask-image: none; mask-image: none; }
  .marquee-track { animation: none; flex-wrap: wrap; width: auto; justify-content: center; }
  .marquee-track [aria-hidden="true"] { display: none; }
}

/* Press */
.press-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
@media (max-width: 900px) { .press-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .press-grid { grid-template-columns: minmax(0, 1fr); } }
.press-item {
  display: grid; grid-template-rows: 150px auto; text-decoration: none; color: var(--text);
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  transition: border-color .2s ease, transform .2s ease;
}
.press-item:hover { border-color: var(--green); transform: translateY(-2px); }
.press-item .thumb { display: grid; place-items: center; padding: 18px; background: #fff; border-bottom: 1px solid var(--line); }
.press-item .thumb img { max-height: 110px; width: auto; object-fit: contain; }
.press-item .meta { padding: 16px 18px; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.press-item .source { font-family: var(--font-display); font-weight: 700; font-size: 1rem; }
.press-item .read { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--green-deep); white-space: nowrap; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: clamp(32px, 6vw, 72px); align-items: start; }
.contact-grid > * { min-width: 0; }
@media (max-width: 900px) { .contact-grid { grid-template-columns: minmax(0, 1fr); } }
.contact-info { display: grid; gap: 26px; }
.address { font-style: normal; font-family: var(--font-mono); font-size: .92rem; line-height: 1.8; color: var(--on-dark); }
.map { width: 100%; aspect-ratio: 16 / 10; max-width: 100%; border: 0; border-radius: var(--radius); filter: grayscale(.4); }
.form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; background: var(--surface); color: var(--text); padding: clamp(22px, 4vw, 36px); border-radius: var(--radius); }
.form .full { grid-column: 1 / -1; }
@media (max-width: 560px) { .form { grid-template-columns: minmax(0, 1fr); } }
.field { display: grid; gap: 6px; }
.field label { font-family: var(--font-mono); font-size: .74rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.field input, .field textarea {
  font: inherit; color: var(--text); background: var(--paper);
  border: 1px solid var(--line); border-radius: 4px; padding: 12px 14px; width: 100%;
}
.field textarea { min-height: 140px; resize: vertical; }
.field input:focus, .field textarea:focus { border-color: var(--green); outline: none; box-shadow: 0 0 0 3px rgba(47,157,85,.18); }
.form-status { font-size: .95rem; color: var(--muted); align-self: center; }
.form-status.ok { color: var(--green-deep); }
.form-status.err { color: #b3261e; }

/* Product pages */
.spec-strip { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--surface); }
.spec-strip > div { padding: 26px 24px; display: grid; gap: 6px; border-right: 1px solid var(--line); }
.spec-strip > div:last-child { border-right: 0; }
.spec-strip .k { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.spec-strip .v { font-family: var(--font-display); font-weight: 750; font-stretch: 108%; font-size: 1.35rem; line-height: 1.2; }
.spec-strip .v small { font-size: .9rem; font-weight: 600; color: var(--muted); }
@media (max-width: 760px) {
  .spec-strip { grid-template-columns: minmax(0, 1fr); }
  .spec-strip > div { border-right: 0; border-bottom: 1px solid var(--line); }
  .spec-strip > div:last-child { border-bottom: 0; }
}
.check-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.check-list li { display: grid; grid-template-columns: 22px 1fr; gap: 12px; align-items: start; color: var(--text); }
.check-list li::before {
  content: ""; width: 18px; height: 18px; margin-top: 4px; border-radius: 50%;
  background: var(--green) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 8.5l2.5 2.5L12 5.5' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 14px no-repeat;
}
.capacity { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 560px) { .capacity { grid-template-columns: minmax(0, 1fr); } }
.capacity div { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; display: grid; gap: 4px; }
.capacity .v { font-family: var(--font-display); font-weight: 800; font-stretch: 110%; font-size: 1.9rem; color: var(--green-deep); font-variant-numeric: tabular-nums; }
.capacity .k { color: var(--muted); font-size: .98rem; }

.usecase-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 900px) { .usecase-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .usecase-grid { grid-template-columns: minmax(0, 1fr); } }
.usecase {
  position: relative; isolation: isolate; min-height: 220px; border-radius: var(--radius); overflow: hidden;
  display: flex; align-items: flex-end; padding: 20px; color: var(--on-dark); background: var(--ink-2);
}
.usecase img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; transition: transform .6s ease; }
.usecase::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, rgba(14,28,34,.1) 30%, rgba(14,28,34,.88) 100%); }
.usecase:hover img { transform: scale(1.05); }
.usecase h3 { font-size: 1.1rem; letter-spacing: .06em; text-transform: uppercase; font-stretch: 110%; }

.callout {
  border-left: 3px solid var(--green); padding: 4px 0 4px 20px;
  font-family: var(--font-display); font-weight: 600; font-size: 1.2rem; line-height: 1.4; color: var(--text);
  max-width: 48ch;
}
.cta-band .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; padding-block: 56px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation-duration: 0s !important; }
}

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: var(--on-dark-muted); font-size: .95rem; }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1.3fr) repeat(3, minmax(0, 1fr)); gap: 36px; padding-block: 64px 40px; }
.footer-grid > * { min-width: 0; }
@media (max-width: 860px) { .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 480px) { .footer-grid { grid-template-columns: minmax(0, 1fr); } }
.footer-logo { height: 54px; width: auto; }
.footer-grid h4 { margin: 0 0 14px; font-family: var(--font-mono); font-size: .74rem; font-weight: 500; letter-spacing: .14em; text-transform: uppercase; color: var(--mint); }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.footer-grid a { color: var(--on-dark); text-decoration: none; }
.footer-grid a:hover { color: var(--mint); }
.footer-base { border-top: 1px solid rgba(233,240,237,.1); padding-block: 22px; font-family: var(--font-mono); font-size: .78rem; letter-spacing: .06em; }

.h2-long { font-size: clamp(1.5rem, 2.4vw, 2rem); line-height: 1.2; }

/* Vision band: deep brand green, no photo */
.band-green { background: linear-gradient(135deg, #16452f 0%, #0f2b22 55%, #0e1c22 100%); color: var(--on-dark); }
/* Partner logos shown in full colour */
.logo-tile img { filter: none; opacity: 1; max-height: 64px; }

/* ---------- Light header so the full-colour logo reads ---------- */
.site-header { background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); box-shadow: 0 1px 0 rgba(14,28,34,.03); }
.brand img { height: 44px; width: auto; }
.nav a, .nav .sub-toggle { color: var(--text); }
.nav a:hover, .nav .sub-toggle:hover, .nav a[aria-current="page"] { color: var(--green-deep); }
.submenu { background: var(--surface); border-color: var(--line); box-shadow: 0 18px 40px rgba(14,28,34,.12); }
.menu-toggle { color: var(--text); border-color: var(--line); }
@media (max-width: 960px) {
  .nav { background: var(--surface); border-bottom-color: var(--line); }
  .nav a, .nav .sub-toggle { border-bottom-color: var(--line); }
}
@media (max-width: 420px) { .brand img { height: 32px; } }
.hero-inner { padding-top: 96px; }
/* Footer logo sits on a white plate */
.footer-logo { height: auto; width: min(260px, 100%); background: #fff; padding: 12px 16px; border-radius: var(--radius); box-sizing: content-box; max-width: calc(100% - 32px); }
/* Map */
.map-link { color: var(--mint); font-family: var(--font-mono); font-size: .82rem; letter-spacing: .08em; text-transform: uppercase; text-decoration: none; }
.map-link:hover { text-decoration: underline; }
.map { background: var(--ink-2); }

/* Image column matches the height of the text column */
.split.fill { align-items: stretch; }
.split.fill .media { display: flex; }
.split.fill .media img { aspect-ratio: auto; height: 100%; min-height: 320px; object-fit: cover; }
@media (max-width: 860px) { .split.fill .media img { aspect-ratio: 4 / 3; height: auto; min-height: 0; } }

/* Footer social link */
.footer-grid .social { display: inline-grid; place-items: center; width: 40px; height: 40px; margin-top: 16px; border-radius: 50%; color: var(--on-dark); background: rgba(233,240,237,.08); transition: background .2s ease, color .2s ease; }
.footer-grid .social:hover { background: #0a66c2; color: #fff; }