/* ============================================================
   EcoTech × Soneera — Wastewater Treatment Landing Page
   Design system: Archivo (display) / Hanken Grotesk (body) /
   IBM Plex Mono (technical eyebrows + captions)
   ============================================================ */

:root {
  /* ----- Ink & neutrals (cool slate) ----- */
  --ink:        oklch(0.24 0.018 224);   /* primary text / deep slate */
  --ink-soft:   oklch(0.42 0.016 224);   /* secondary text */
  --ink-faint:  oklch(0.58 0.012 224);   /* tertiary / captions */
  --line:       oklch(0.90 0.008 224);   /* hairlines */
  --line-soft:  oklch(0.94 0.006 224);

  --paper:      oklch(0.992 0.003 220);  /* base background, faintly cool */
  --paper-alt:  oklch(0.965 0.006 218);  /* alternating section */
  --paper-deep: oklch(0.22 0.02 226);    /* dark band */

  /* ----- Water accent (blue) — tweakable; JS recomputes the scale ----- */
  --teal:       oklch(0.53 0.12 252);
  --teal-deep:  oklch(0.45 0.12 254);
  --teal-soft:  oklch(0.95 0.03 250);
  --teal-tint:  oklch(0.86 0.07 250);

  /* ----- EcoTech green (secondary, used sparingly) ----- */
  --green:      oklch(0.62 0.085 152);
  --green-soft: oklch(0.94 0.03 152);

  /* ----- Type ----- */
  --font-display: "Archivo", system-ui, sans-serif;
  --font-body:    "Hanken Grotesk", system-ui, sans-serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, monospace;

  /* ----- Rhythm (density-tweakable) ----- */
  --section-y: clamp(5rem, 9vw, 9rem);
  --maxw: 1200px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --radius: 14px;
}

:root[data-density="compact"] {
  --section-y: clamp(3.25rem, 6vw, 6rem);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 92px; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  font-size: 17px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.04;
  margin: 0;
  text-wrap: balance;
}

p { margin: 0; text-wrap: pretty; }
a { color: inherit; }

/* ---------- Layout ---------- */
.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding-inline: var(--gutter);
}
.section { padding-block: var(--section-y); }
.section--alt { background: var(--paper-alt); }
.section--dark {
  background: var(--paper-deep);
  color: oklch(0.93 0.01 220);
}

/* ---------- Eyebrow ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
  margin: 0 0 1.1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}
.section--dark .eyebrow { color: var(--teal-tint); }
.eyebrow::before {
  content: "";
  width: 1.6rem;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

/* ---------- Type scale ---------- */
.h1 { font-size: clamp(2.7rem, 6.2vw, 5rem); }
.h2 { font-size: clamp(2rem, 4vw, 3.3rem); }
.h3 { font-size: clamp(1.35rem, 2.2vw, 1.85rem); letter-spacing: -0.015em; }
.lead {
  font-size: clamp(1.15rem, 1.9vw, 1.5rem);
  line-height: 1.5;
  color: var(--ink-soft);
  font-weight: 400;
}
.measure { max-width: 62ch; }
.measure-sm { max-width: 46ch; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -0.01em;
  padding: 0.95rem 1.6rem;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}
.btn .arr { transition: transform .2s ease; }
.btn:hover .arr { transform: translateX(3px); }
.btn--primary { background: var(--teal); color: oklch(0.99 0.01 210); }
.btn--primary:hover { background: var(--teal-deep); }
.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn--ghost:hover { border-color: var(--ink); }
.section--dark .btn--ghost { color: oklch(0.95 0.01 220); border-color: oklch(0.45 0.02 224); }
.section--dark .btn--ghost:hover { border-color: oklch(0.7 0.02 224); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--paper) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid var(--line-soft);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.wordmark {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.12rem;
  letter-spacing: -0.03em;
  text-decoration: none;
  color: var(--ink);
}
.wordmark .dot { color: var(--teal); }

/* ---------- Real logo brand lockup ---------- */
.brand { display: inline-flex; align-items: center; text-decoration: none; }
.brand img { height: 38px; width: auto; display: block; }
.brand--plaque {
  background: #fff;
  padding: 14px 18px;
  border-radius: 12px;
  box-shadow: 0 10px 30px -18px rgba(0,0,0,.5);
}
.brand--plaque img { height: 46px; }
.partner-lockup {
  display: flex;
  align-items: center;
  gap: clamp(1.1rem, 2.4vw, 1.9rem);
  flex-wrap: wrap;
  margin-bottom: clamp(2rem, 3.5vw, 3rem);
  padding-bottom: clamp(1.6rem, 2.6vw, 2.2rem);
  border-bottom: 1px solid var(--line);
}
.partner-lockup img { display: block; width: auto; }
.partner-lockup .pl-ecotech { height: 92px; }
.partner-lockup .pl-soneera { height: 60px; }
.partner-lockup .pl-x {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 2rem;
  color: var(--ink-faint);
}
.wordmark .sub {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.4vw, 2.2rem);
}
.nav .nav-links a {
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-soft);
  white-space: nowrap;
  transition: color .15s ease;
}
.nav .nav-links a:hover { color: var(--ink); }
.nav .nav-links { display: flex; gap: clamp(1rem, 2.2vw, 2rem); }
@media (max-width: 820px) { .nav .nav-links { display: none; } }

/* ---------- Hero ---------- */
.hero { padding-top: clamp(3.5rem, 7vw, 6.5rem); padding-bottom: clamp(3rem, 6vw, 5rem); }
.hero .eyebrow { color: var(--teal); }
.hero .h1 { max-width: 16ch; margin-bottom: 1.6rem; }
.hero .lead { max-width: 56ch; margin-bottom: 2.4rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.9rem; }
.hero-figure {
  margin-top: clamp(2.8rem, 5vw, 4.5rem);
}
/* Raw-vs-clean photo — plain rectangle beside the heading, full image shown */
.hero-top { display: flex; align-items: center; gap: clamp(1.75rem, 4vw, 3.5rem); }
.hero-copy { flex: 1 1 56%; min-width: 0; }
.hero-aside {
  flex: 0 1 44%;
  align-self: center;
  margin: 0;
  aspect-ratio: 3 / 2;
  overflow: hidden;
}
.hero-aside img { display: block; width: 100%; height: 100%; object-fit: cover; }
@media (max-width: 1040px) { .hero-top { display: block; } .hero-aside { display: none; } }

/* ---------- Placeholder image ---------- */
.ph {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--paper-alt);
  background-image:
    repeating-linear-gradient(135deg,
      oklch(0.88 0.01 220) 0 1px,
      transparent 1px 11px);
  border: 1px solid var(--line);
  display: flex;
  align-items: flex-end;
  min-height: 220px;
}
.ph--teal {
  background-color: var(--teal-soft);
  background-image:
    repeating-linear-gradient(135deg,
      color-mix(in oklab, var(--teal) 22%, transparent) 0 1px,
      transparent 1px 11px);
  border-color: var(--teal-tint);
}
.ph__cap {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
  background: color-mix(in oklab, var(--paper) 85%, transparent);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.35rem 0.6rem;
  margin: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}
.ph__cap::before {
  content: "";
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--teal);
}
.ph--tall { min-height: 420px; }
.ph--wide { aspect-ratio: 16/7; }

/* ---------- Real photography ---------- */
.figure {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--paper-alt);
  position: relative;
}
.figure img { display: block; width: 100%; height: 100%; object-fit: cover; }
.figure--wide { aspect-ratio: 16/7; }
.figure--feature { aspect-ratio: 3/2; }
.figure--tech { aspect-ratio: 3/2; }
.section--dark .figure { border-color: oklch(0.4 0.02 224); background: oklch(0.27 0.02 226); }
.figcap {
  position: absolute;
  left: 0.85rem; bottom: 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.03em;
  color: oklch(0.99 0.01 220);
  background: color-mix(in oklab, var(--ink) 78%, transparent);
  backdrop-filter: blur(4px);
  border-radius: 6px;
  padding: 0.35rem 0.6rem;
  display: inline-flex; align-items: center; gap: 0.45rem;
}
.figcap::before { content:""; width: 7px; height: 7px; border-radius: 50%; background: var(--teal); flex: none; }

/* ---------- Partnership band ---------- */
.band-statement .h2 { max-width: 18ch; }
.band-statement .grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}
@media (max-width: 860px) { .band-statement .grid { grid-template-columns: 1fr; gap: 1.5rem; } }

/* ---------- Steps (Design / Manufacture / Build) ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 3vw, 2.75rem);
  margin-top: clamp(2.5rem, 4vw, 3.5rem);
}
@media (max-width: 820px) { .steps { grid-template-columns: 1fr; } }
.step { border-top: 2px solid var(--ink); padding-top: 1.4rem; }
.step__num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--teal);
  margin-bottom: 1.4rem;
}
.step h3 { margin-bottom: 0.7rem; }
.step p { color: var(--ink-soft); }
.step__img {
  margin-top: 1.5rem;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--line);
  aspect-ratio: 16/10;
}
.step__img img { display: block; width: 100%; height: 100%; object-fit: cover; }

/* ---------- Technology value grid ---------- */
.tech-head { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(2rem,5vw,4rem); align-items: center; }
@media (max-width: 860px) { .tech-head { grid-template-columns: 1fr; gap: 1.8rem; } }
.tech-head .lead { margin-top: 1.3rem; }
.value-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: clamp(2.5rem, 4vw, 3.5rem);
}
@media (max-width: 980px) { .value-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .value-grid { grid-template-columns: 1fr; } }
.value {
  background: var(--paper);
  padding: clamp(1.5rem, 2.2vw, 2rem);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  transition: background .18s ease;
}
.value:hover { background: var(--teal-soft); }
.value__mark { width: 30px; height: 30px; color: var(--teal); }
.value__mark svg { width: 100%; height: 100%; display: block; }
.value h4 { font-family: var(--font-display); font-size: 1.05rem; font-weight: 700; letter-spacing: -0.015em; line-height: 1.18; }
.value p { font-size: 0.95rem; color: var(--ink-soft); line-height: 1.5; }

/* ---------- Flow diagram ---------- */
.flow {
  display: flex;
  align-items: stretch;
  gap: 0;
  margin-top: clamp(2.5rem, 4vw, 3.5rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
@media (max-width: 720px) { .flow { flex-direction: column; } }
.flow__stage {
  flex: 1;
  padding: clamp(1.5rem, 3vw, 2.5rem);
  background: var(--paper);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.flow__stage:nth-child(2) { background: var(--teal-soft); }
.flow__num { font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.1em; color: var(--teal); text-transform: uppercase; }
.flow__stage h4 { font-size: 1.15rem; }
.flow__stage p { font-size: 0.92rem; color: var(--ink-soft); }
.flow__arrow {
  display: flex; align-items: center; justify-content: center;
  width: 56px; color: var(--teal); background: var(--paper);
  flex: none;
}
@media (max-width: 720px) { .flow__arrow { width: 100%; height: 44px; transform: rotate(90deg); } }

/* ---------- Why now band ---------- */
.whynow .milestone {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.12;
  color: oklch(0.97 0.01 210);
  max-width: 20ch;
}
.whynow .milestone em { font-style: normal; color: var(--teal-tint); }
.whynow .grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: clamp(2rem,5vw,5rem); align-items: center; }
@media (max-width: 860px) { .whynow .grid { grid-template-columns: 1fr; gap: 1.8rem; } }
.whynow p { color: oklch(0.82 0.012 220); }

/* ---------- Featured project ---------- */
.feature .grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
.feature--flip .grid { direction: rtl; }
.feature--flip .grid > * { direction: ltr; }
@media (max-width: 900px) {
  .feature .grid, .feature--flip .grid { grid-template-columns: 1fr; direction: ltr; gap: 2rem; }
}
.feature h2 { margin: 0.4rem 0 1.2rem; }
.feature p { color: var(--ink-soft); margin-bottom: 1.6rem; }
.feature--dark p { color: oklch(0.82 0.012 220); }
.chips { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.chip {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.03em;
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  background: var(--paper);
}
.feature--dark .chip { border-color: oklch(0.4 0.02 224); color: oklch(0.86 0.01 220); background: transparent; }
.feature--dark .chip { background: color-mix(in oklab, var(--teal) 12%, transparent); border-color: color-mix(in oklab, var(--teal) 35%, transparent); }

/* ---------- Track record strip ---------- */
.track .locations {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: center;
  margin-top: 2.5rem;
  padding-top: 2.2rem;
  border-top: 1px solid var(--line);
}
.track .loc {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.1rem, 1.8vw, 1.5rem);
  letter-spacing: -0.02em;
  color: var(--ink-faint);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}
.track .loc::before { content:""; width: 8px; height: 8px; background: var(--teal); border-radius: 2px; transform: rotate(45deg); flex: none; }

/* ---------- Audience tracks ---------- */
.tracks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  margin-top: clamp(2.5rem, 4vw, 3.5rem);
}
@media (max-width: 820px) { .tracks { grid-template-columns: 1fr; } }
.track-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.8rem, 3vw, 2.6rem);
  background: var(--paper);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.track-card .tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal);
}
.track-card.is-industry .tag { color: var(--green); }
.track-card h3 { font-size: 1.5rem; }
.track-card p { color: var(--ink-soft); }
.track-card .rule { height: 2px; width: 44px; background: var(--teal); border-radius: 2px; }
.track-card.is-industry .rule { background: var(--green); }

/* ---------- CTA form ---------- */
.cta .grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: start; }
@media (max-width: 900px) { .cta .grid { grid-template-columns: 1fr; gap: 2.5rem; } }
.cta h2 { margin-bottom: 1.2rem; }
.cta .lead { margin-bottom: 2rem; }
.contact-line { display: flex; flex-direction: column; gap: 0.9rem; margin-top: 2rem; padding-top: 2rem; border-top: 1px solid oklch(0.4 0.02 224); }
.contact-line a { font-family: var(--font-mono); font-size: 0.95rem; color: oklch(0.92 0.01 220); text-decoration: none; display: inline-flex; gap: 0.6rem; align-items: center; }
.contact-line a:hover { color: var(--teal-tint); }
.contact-line .lbl { color: var(--teal-tint); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; }

.form {
  background: var(--paper);
  border-radius: var(--radius);
  padding: clamp(1.8rem, 3.2vw, 2.8rem);
  border: 1px solid var(--line);
  box-shadow: 0 24px 60px -40px oklch(0.2 0.03 224 / 0.5);
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem 1.1rem; }
@media (max-width: 560px) { .form-grid { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: 0.45rem; }
.field.full { grid-column: 1 / -1; }
.field label {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--ink-soft);
}
.field label .req { color: var(--teal); }
.field input, .field select, .field textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
  background: var(--paper-alt);
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 0.8rem 0.9rem;
  width: 100%;
  transition: border-color .15s ease, background .15s ease, box-shadow .15s ease;
}
.field textarea { resize: vertical; min-height: 110px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--teal);
  background: var(--paper);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--teal) 18%, transparent);
}
.form .btn { width: 100%; justify-content: center; margin-top: 0.4rem; }
.form-note { font-size: 0.8rem; color: var(--ink-faint); margin-top: 0.9rem; text-align: center; }
.link-btn {
  background: none; border: none; padding: 0; cursor: pointer;
  font: inherit; color: var(--teal); font-weight: 600;
  text-decoration: underline; text-underline-offset: 2px;
}
.link-btn:hover { color: var(--teal-deep); }

.form-success {
  display: none;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
  padding: clamp(2rem, 4vw, 3rem);
}
.form-success .ok {
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--green-soft); color: var(--green);
  display: flex; align-items: center; justify-content: center;
}
.form.is-sent .form-grid, .form.is-sent .btn, .form.is-sent .form-note { display: none; }
.form.is-sent .form-success { display: flex; }

/* ---------- Footer ---------- */
.footer { background: var(--paper-deep); color: oklch(0.82 0.012 220); padding-block: clamp(1.8rem, 3vw, 2.4rem); }
.footer .legal {
  display: flex; flex-wrap: wrap; gap: 0.6rem 1.5rem; justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.03em;
  color: oklch(0.66 0.012 220);
}

/* reveal-on-scroll — content is visible by DEFAULT. JS adds .pending ONLY to
   elements that start below the fold, then removes it on scroll to fade them in.
   Above-the-fold content (hero) is never hidden, and capture tools that freeze
   animations can't strand anything invisible. */
.reveal { opacity: 1; transform: none; transition: opacity .7s ease, transform .7s ease; }
.reveal.pending { opacity: 0; transform: translateY(20px); }
@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal.pending { opacity: 1; transform: none; transition: none; }
}