/* EEIG — Design tokens & homepage styles */
:root {
  --bg-dark: #070b14;
  --bg-dark-elevated: #0c1220;
  --bg-page: #f4f5f7;
  --bg-surface: #ffffff;
  --ink: #12151c;
  --ink-muted: #5a6270;
  --ink-on-dark: #f3f5f8;
  --ink-on-dark-muted: #9aa3b2;
  --line: #d8dde6;
  --line-dark: rgba(255, 255, 255, 0.1);
  --accent: #22d3ee;
  --accent-strong: #06b6d4;
  --accent-ink: #041016;
  --focus: #22d3ee;

  --font-sans: "IBM Plex Sans", "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1.0625rem;
  --text-lg: 1.25rem;
  --text-xl: clamp(1.5rem, 2vw, 1.875rem);
  --text-2xl: clamp(2rem, 3.5vw, 2.75rem);
  --text-display: clamp(2.35rem, 5vw, 3.75rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;
  --space-10: 8rem;

  --container: 1180px;
  --header-h: 4.5rem;
  --radius: 2px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --duration: 280ms;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  border: 0;
  background: none;
  cursor: pointer;
  color: inherit;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
h4,
p {
  margin: 0;
}

.container {
  width: min(100% - 2.5rem, var(--container));
  margin-inline: auto;
}

.section {
  padding-block: var(--space-9);
}

.section--tight {
  padding-block: var(--space-8);
}

.section__label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.section__label::before {
  content: "";
  width: 1.5rem;
  height: 1px;
  background: currentColor;
}

.section__title {
  font-size: var(--text-2xl);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
  max-width: 18ch;
}

.section__lead {
  margin-top: var(--space-4);
  max-width: 62ch;
  color: var(--ink-muted);
  font-size: var(--text-base);
}

.section__head {
  display: grid;
  gap: var(--space-4);
  margin-bottom: var(--space-7);
  max-width: 720px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 2.85rem;
  padding: 0.7rem 1.25rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: background var(--duration) var(--ease), color var(--duration) var(--ease),
    border-color var(--duration) var(--ease), transform var(--duration) var(--ease);
}

.btn svg {
  width: 0.95rem;
  height: 0.95rem;
}

.btn--primary {
  background: var(--accent);
  color: var(--accent-ink);
}

.btn--primary:hover {
  background: #67e8f9;
}

.btn--ghost {
  border-color: var(--accent);
  color: var(--accent);
  background: transparent;
}

.btn--ghost:hover {
  background: rgba(34, 211, 238, 0.08);
}

.btn--dark {
  background: var(--ink);
  color: var(--ink-on-dark);
}

.btn--dark:hover {
  background: #252b36;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--ink);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration) var(--ease), color var(--duration) var(--ease);
}

.text-link:hover {
  border-color: currentColor;
}

.text-link--accent {
  color: var(--accent-strong);
}

/* Header */
.site-header {
  position: absolute;
  inset: 0 0 auto;
  z-index: 40;
  height: var(--header-h);
}

body:not(.home) .site-header,
body:not(.front-page) .site-header {
  position: relative;
  background: var(--bg-dark);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  height: var(--header-h);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.brand__mark {
  width: 2.1rem;
  height: 2.1rem;
  flex-shrink: 0;
}

.brand__text {
  display: grid;
  gap: 0.1rem;
  min-width: 0;
}

.brand__name {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink-on-dark);
  line-height: 1.1;
}

.brand__tag {
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-on-dark-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 22rem;
}

.nav {
  display: none;
  align-items: center;
  gap: 1.55rem;
}

.nav a {
  font-size: var(--text-sm);
  color: rgba(243, 245, 248, 0.86);
  transition: color var(--duration) var(--ease);
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--ink-on-dark);
}

.header-cta {
  display: none;
}

.nav-toggle {
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  display: grid;
  place-items: center;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 1rem;
  height: 1px;
  background: var(--ink-on-dark);
}

.nav-drawer {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: rgba(7, 11, 20, 0.96);
  padding: var(--space-6);
  display: none;
  flex-direction: column;
  gap: var(--space-6);
}

.nav-drawer.is-open {
  display: flex;
}

.nav-drawer__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-drawer nav {
  display: grid;
  gap: 1.25rem;
}

.nav-drawer a {
  font-size: 1.35rem;
  color: var(--ink-on-dark);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  background:
    radial-gradient(ellipse 70% 55% at 78% 42%, rgba(34, 211, 238, 0.12), transparent 60%),
    radial-gradient(ellipse 50% 40% at 20% 80%, rgba(37, 99, 235, 0.12), transparent 55%),
    linear-gradient(160deg, #05080f 0%, #0a1222 45%, #070b14 100%);
  color: var(--ink-on-dark);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 70% at 70% 45%, #000 20%, transparent 75%);
  pointer-events: none;
}

.hero__body {
  position: relative;
  z-index: 1;
  flex: 1;
  display: grid;
  align-items: center;
  padding-top: calc(var(--header-h) + var(--space-6));
  padding-bottom: var(--space-7);
  gap: var(--space-7);
}

.hero__content {
  max-width: 36rem;
}

.hero__eyebrow {
  display: inline-block;
  margin-bottom: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero__title {
  font-size: var(--text-display);
  font-weight: 650;
  letter-spacing: -0.03em;
  line-height: 1.05;
  max-width: 14ch;
}

.hero__title em {
  font-style: normal;
  color: var(--accent);
}

.hero__text {
  margin-top: var(--space-5);
  max-width: 40ch;
  color: var(--ink-on-dark-muted);
  font-size: 1.05rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: var(--space-6);
}

.hero__metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4) var(--space-5);
  margin-top: var(--space-7);
  padding-top: var(--space-6);
  border-top: 1px solid var(--line-dark);
}

.metric {
  display: grid;
  gap: 0.35rem;
}

.metric__value {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.metric__label {
  font-size: var(--text-xs);
  line-height: 1.4;
  color: var(--ink-on-dark-muted);
  max-width: 16ch;
}

.hero__visual {
  position: relative;
  min-height: 320px;
  display: grid;
  place-items: center;
}

.schematic {
  width: min(100%, 560px);
  aspect-ratio: 1.05;
  position: relative;
}

.schematic__canvas {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.schematic__canvas .pipe {
  fill: none;
  stroke: url(#pipeGradient);
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.schematic__canvas .pipe-dim {
  stroke: rgba(148, 163, 184, 0.35);
  stroke-width: 1.4;
}

.schematic__canvas .node {
  fill: var(--accent);
  filter: drop-shadow(0 0 6px rgba(34, 211, 238, 0.55));
}

.schematic__canvas .vessel {
  fill: rgba(34, 211, 238, 0.04);
  stroke: rgba(34, 211, 238, 0.55);
  stroke-width: 1.5;
}

.schematic__coords {
  position: absolute;
  right: 0.5rem;
  bottom: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: rgba(148, 163, 184, 0.7);
  letter-spacing: 0.04em;
}

.schematic__notes {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.note {
  position: absolute;
  max-width: 11.5rem;
}

.note--1 {
  top: 8%;
  left: 0;
}

.note--2 {
  top: 42%;
  right: 0;
  text-align: right;
}

.note--3 {
  bottom: 14%;
  left: 4%;
}

.note__title {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-on-dark);
}

.note__text {
  margin-top: 0.2rem;
  font-size: 0.72rem;
  color: var(--ink-on-dark-muted);
  line-height: 1.35;
}

.note__line {
  display: block;
  width: 2.5rem;
  height: 1px;
  margin: 0.45rem 0;
  background: linear-gradient(90deg, var(--accent), transparent);
}

.note--2 .note__line {
  margin-left: auto;
  background: linear-gradient(270deg, var(--accent), transparent);
}

.hero__strip {
  position: relative;
  z-index: 2;
  background: var(--bg-surface);
  color: var(--ink);
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}

.hero__strip-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 4.25rem;
  padding-block: 1rem;
}

.hero__strip-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.hero__strip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1.5rem;
  font-size: var(--text-sm);
  color: #3d4553;
}

.hero__strip-list li {
  position: relative;
  padding-left: 0.9rem;
}

.hero__strip-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.35rem;
  height: 0.35rem;
  border-radius: 50%;
  background: var(--accent-strong);
}

/* Intro */
.intro-grid {
  display: grid;
  gap: var(--space-7);
}

.intro__aside {
  display: grid;
  gap: 0;
  border: 1px solid var(--line);
  background: var(--bg-surface);
}

.intro__aside-item {
  padding: var(--space-5);
  border-bottom: 1px solid var(--line);
}

.intro__aside-item:last-child {
  border-bottom: 0;
}

.intro__aside-item dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 0.45rem;
}

.intro__aside-item dd {
  margin: 0;
  font-weight: 550;
  letter-spacing: -0.01em;
}

/* Services */
.phase-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
  background: var(--bg-surface);
}

.phase {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--line);
}

.phase__index {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--accent-strong);
  letter-spacing: 0.08em;
}

.phase__title {
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.phase__text {
  color: var(--ink-muted);
  max-width: 70ch;
}

.services-split {
  display: grid;
  gap: var(--space-7);
  margin-top: var(--space-7);
}

.panel {
  border: 1px solid var(--line);
  background: var(--bg-surface);
  padding: var(--space-6);
}

.panel__title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.bullet-list {
  display: grid;
  gap: var(--space-4);
}

.bullet-list li {
  padding-left: 1rem;
  position: relative;
  color: var(--ink-muted);
}

.bullet-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 0.4rem;
  height: 1px;
  background: var(--ink);
}

.bullet-list strong {
  display: block;
  color: var(--ink);
  font-weight: 600;
  margin-bottom: 0.2rem;
}

/* Approach */
.approach {
  background: var(--bg-dark);
  color: var(--ink-on-dark);
}

.approach .section__label,
.approach .section__lead {
  color: var(--ink-on-dark-muted);
}

.approach .section__title {
  color: var(--ink-on-dark);
}

.steps {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-7);
}

.step {
  border: 1px solid var(--line-dark);
  padding: var(--space-5);
  background: rgba(255, 255, 255, 0.02);
}

.step__index {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--accent);
  letter-spacing: 0.12em;
  margin-bottom: var(--space-3);
}

.step__title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.step__text {
  color: var(--ink-on-dark-muted);
  font-size: var(--text-sm);
}

/* Industries */
.industry-grid {
  display: grid;
  gap: var(--space-4);
}

.industry {
  background: var(--bg-surface);
  border: 1px solid var(--line);
  padding: var(--space-6);
}

.industry__title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--line);
}

.industry__list {
  display: grid;
  gap: 0.7rem;
}

.industry__list li {
  color: var(--ink-muted);
  padding-left: 0.9rem;
  position: relative;
}

.industry__list li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--ink);
}

/* Why */
.why-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.why-item {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--line);
}

.why-item__title {
  font-size: 1.05rem;
  font-weight: 600;
}

.why-item__text {
  color: var(--ink-muted);
  max-width: 70ch;
}

/* Experience */
.experience-table {
  border-top: 1px solid var(--line);
  background: var(--bg-surface);
}

.experience-row {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--line);
}

.experience-row__title {
  font-weight: 600;
  letter-spacing: -0.01em;
}

.experience-row__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--ink-muted);
  letter-spacing: 0.02em;
}

.disclaimer {
  margin-top: var(--space-5);
  padding: var(--space-4);
  border-left: 2px solid var(--accent-strong);
  background: rgba(6, 182, 212, 0.06);
  color: var(--ink-muted);
  font-size: var(--text-sm);
  max-width: 75ch;
}

.section-foot {
  margin-top: var(--space-6);
}

/* Capabilities */
.capabilities {
  background: var(--bg-surface);
  border-block: 1px solid var(--line);
}

.cap-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: var(--space-5);
}

.cap-list li {
  border: 1px solid var(--line);
  padding: 0.55rem 0.85rem;
  font-size: var(--text-sm);
  color: #3d4553;
  background: var(--bg-page);
}

/* Enquiry */
.enquiry {
  background:
    radial-gradient(ellipse 60% 80% at 90% 20%, rgba(34, 211, 238, 0.12), transparent 55%),
    var(--bg-dark);
  color: var(--ink-on-dark);
}

.enquiry .section__label,
.enquiry .section__lead {
  color: var(--ink-on-dark-muted);
}

.enquiry__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
  margin-top: var(--space-6);
}

.enquiry__email {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--accent);
}

.enquiry__email:hover {
  text-decoration: underline;
}

/* Footer */
.site-footer {
  background: #05080f;
  color: var(--ink-on-dark-muted);
  padding-block: var(--space-8) var(--space-6);
  border-top: 1px solid var(--line-dark);
}

.footer-grid {
  display: grid;
  gap: var(--space-6);
  margin-bottom: var(--space-7);
}

.footer-brand .brand__name {
  margin-bottom: 0.35rem;
}

.footer-brand p {
  margin-top: var(--space-3);
  max-width: 34ch;
  font-size: var(--text-sm);
}

.footer-col h3 {
  color: var(--ink-on-dark);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.footer-col a,
.footer-col li {
  display: block;
  font-size: var(--text-sm);
  margin-bottom: 0.55rem;
}

.footer-col a:hover {
  color: var(--ink-on-dark);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-3);
  padding-top: var(--space-5);
  border-top: 1px solid var(--line-dark);
  font-size: var(--text-xs);
}

/* Reveal */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* Responsive */
@media (min-width: 720px) {
  .hero__metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .phase {
    grid-template-columns: 4rem 14rem 1fr;
    align-items: start;
    gap: var(--space-5);
  }

  .why-item {
    grid-template-columns: 15rem 1fr;
    gap: var(--space-6);
  }

  .experience-row {
    grid-template-columns: 1fr auto;
    align-items: baseline;
  }

  .steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .industry-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
  }
}

@media (min-width: 960px) {
  .nav,
  .header-cta {
    display: flex;
  }

  .nav-toggle {
    display: none;
  }

  .hero__body {
    grid-template-columns: 1.05fr 1fr;
    gap: var(--space-6);
    padding-top: calc(var(--header-h) + var(--space-5));
  }

  .hero__visual {
    min-height: 480px;
  }

  .intro-grid {
    grid-template-columns: 1.4fr 0.8fr;
    align-items: start;
  }

  .services-split {
    grid-template-columns: 1.2fr 0.8fr;
  }

  .steps {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}