/* SAS Earth Energy Services -- Direction A "Clearing" with Direction B's flow line.
   Colors from Ricardo's Website Directions file; see ../CLAUDE.md for the token table.
   Three text levels: label (small sans), heading (serif), body (sans). */
:root {
  --ink: #101411;
  --paper: #f4f4ef;
  --muted: #626861;
  --body: #3a403b;
  --line: #d9dcd5;
  --line-strong: #cfd5cc;
  --surface: #e8ebe5;
  --green: #345744;
  --green-deep: #2a4838;
  --green-text: #d6dfd8;
  --gold: #d3aa60;
  --gold-hover: #c79a4c;
  --orange: #ed6338;
  --dark: #0b1e23;
  --on-dark: #f4f1e8;
  --on-dark-muted: #c0cbc4;
  --on-dark-line: rgba(244, 241, 232, .26);
  --foot: #111a16;
  --foot-text: #c7cec6;
  --art-line: #62776a;
  --art-hill: #dde2da;

  --serif: "Newsreader", Georgia, serif;
  --sans: "Hanken Grotesk", Arial, sans-serif;

  --gutter: 64px;
  --header-h: 88px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body { margin: 0; background: var(--paper); color: var(--ink); font: 18px/1.65 var(--sans); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
h1, h2, h3 { text-wrap: balance; }
p, li, dd { text-wrap: pretty; }
/* Text directly under a heading wraps into even lines instead of leaving a short last line */
h2 + p, .title + .lede { text-wrap: balance; }
:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; }
[id] { scroll-margin-top: var(--header-h); }
.clause { display: inline-block; }
.nowrap { white-space: nowrap; }

.wrap { width: min(1200px, calc(100% - 2 * var(--gutter))); margin-inline: auto; }
.skip { position: absolute; left: 16px; top: -60px; z-index: 100; background: var(--ink); color: var(--paper); padding: 10px 14px; text-decoration: none; }
.skip:focus { top: 16px; }

/* ---------- Text levels ---------- */
.label { font: 500 15px/1.4 var(--sans); color: var(--green); }
.display { font: 300 clamp(56px, 8.4vw, 112px)/0.98 var(--serif); letter-spacing: -.02em; }
.title { font: 300 clamp(44px, 6vw, 80px)/1.02 var(--serif); letter-spacing: -.02em; max-width: 20ch; }
h2, .h2 { font: 300 clamp(36px, 4.2vw, 52px)/1.1 var(--serif); letter-spacing: -.015em; max-width: 26ch; }
h3, .h3 { font: 400 26px/1.25 var(--serif); }
.small { font-size: 16px; line-height: 1.6; color: var(--muted); }

/* Dark and green surfaces flip the text colors */
.is-dark, .is-green { color: var(--on-dark); }
.is-dark .label { color: var(--gold); }
.is-green .label { color: var(--green-text); }
.is-dark .col > p, .is-dark .lede, .is-dark .small { color: var(--on-dark-muted); }
.is-green .col > p, .is-green .lede, .is-green .small { color: var(--green-text); }
.is-dark :focus-visible { outline-color: var(--gold); }

/* ---------- Buttons and links ---------- */
.btn { display: inline-block; padding: 12px 20px; border-radius: 2px; font: 600 15px/1.2 var(--sans); text-decoration: none; white-space: nowrap; transition: background-color .15s ease; }
.btn--gold { background: var(--gold); color: var(--ink); }
.btn--gold:hover { background: var(--gold-hover); }
.btn--lg { padding: 16px 26px; font-size: 16px; }
.btn--green { background: var(--green); color: var(--on-dark); }
.btn--green:hover { background: var(--green-deep); }
.col > .btn + p { margin-top: 28px; }
.more { display: inline-block; margin-top: 28px; font-weight: 600; font-size: 16px; color: var(--green); text-underline-offset: 6px; text-decoration-thickness: 1px; }
.more:hover { text-decoration-thickness: 2px; }
.is-dark .more { color: var(--on-dark); }

/* ---------- Header ---------- */
.site-header { position: fixed; inset: 0 0 auto 0; z-index: 20; height: var(--header-h); color: var(--on-dark); transition: background-color .2s ease, color .2s ease, box-shadow .2s ease; }
.site-header.is-solid { background: var(--paper); color: var(--ink); box-shadow: 0 1px 0 var(--line); }
.header-inner { height: 100%; display: flex; align-items: center; gap: 24px; width: min(1200px, calc(100% - 2 * var(--gutter))); margin-inline: auto; }
.site-header :focus-visible { outline-color: currentColor; }
.brand { display: flex; align-items: center; gap: 14px; text-decoration: none; flex: none; }
.brand-mark { width: 84px; height: auto; }
.brand-mark--dark { display: none; }
.is-solid .brand-mark--light { display: none; }
.is-solid .brand-mark--dark { display: block; }
.brand-name { font-size: 14px; line-height: 1.25; }
.site-nav { margin-left: auto; display: flex; align-items: center; gap: 32px; }
.site-nav ul { display: flex; gap: 28px; }
.site-nav ul a { display: block; padding: 6px 0; font-size: 15px; font-weight: 500; text-decoration: none; }
.site-nav ul a:hover { box-shadow: inset 0 -1px 0 currentColor; }
.site-nav ul a[aria-current] { box-shadow: inset 0 -2px 0 var(--gold); }
.is-solid .site-nav ul a[aria-current] { box-shadow: inset 0 -2px 0 var(--green); }
.is-solid .nav-cta { background: var(--green); color: var(--on-dark); }
.is-solid .nav-cta:hover { background: var(--green-deep); }
.menu-toggle { display: none; margin-left: auto; font: 600 15px var(--sans); color: inherit; background: none; border: 1px solid currentColor; border-radius: 2px; padding: 8px 14px; cursor: pointer; }

/* ---------- Home hero ---------- */
.hero { position: relative; min-height: 100vh; min-height: 100svh; max-height: 1100px; display: flex; flex-direction: column; background: var(--dark); overflow: hidden; }
.hero-media, .hero-media::after { position: absolute; inset: 0; }
.hero-poster, .hero-video { width: 100%; height: 100%; object-fit: cover; }
.hero-video { position: absolute; inset: 0; }
.hero-media::after { content: ""; background: linear-gradient(180deg, rgba(11,30,35,.6) 0%, rgba(11,30,35,0) 24%, rgba(11,30,35,0) 45%, rgba(11,30,35,.82) 100%); }
.hero-copy { position: relative; flex: 1; display: grid; grid-template-columns: 1fr 1fr; column-gap: 64px; align-content: center; padding: calc(var(--header-h) + 32px) 0 clamp(56px, 12vh, 160px); }
.hero-copy > .label, .hero-copy > h1 { grid-column: 1 / -1; }
.hero-copy > .label { color: var(--on-dark-muted); margin-bottom: 22px; }
.hero h1 { margin-bottom: 32px; }
.hero h1 em { font-style: normal; color: var(--gold); }
.hero .lede, .hero-side p { font-size: 19px; line-height: 1.6; color: var(--on-dark-muted); max-width: 44ch; }
.hero-intro { display: flex; flex-direction: column; align-items: flex-start; }
.hero-side { padding-left: 28px; border-left: 1px solid var(--on-dark-line); }
/* Both hero columns open with a cream semibold lead-in */
.hero .lede strong, .hero-side strong { color: var(--on-dark); font-weight: 600; }
@media (prefers-reduced-motion: no-preference) {
  .hero-copy > * { animation: rise .9s cubic-bezier(.2,.7,.2,1) both; }
  .hero-copy > :nth-child(2) { animation-delay: .12s; }
  .hero-copy > :nth-child(3) { animation-delay: .28s; }
  .hero-copy > :nth-child(4) { animation-delay: .4s; }
}
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

/* ---------- Inner page intro ---------- */
.page-hero { background: var(--dark); padding: calc(var(--header-h) + clamp(64px, 9vw, 120px)) 0 clamp(64px, 8vw, 104px); }
.page-hero .label { margin-bottom: 20px; }
.page-hero .title { margin-bottom: 28px; }
.page-hero .lede { font-size: 20px; line-height: 1.55; max-width: 52ch; }
.page-hero .lede + .lede { margin-top: 16px; }
.operating-idea { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--on-dark-line); }
.operating-idea .label { margin-bottom: 8px; }

/* ---------- Section frame: label column + content column ---------- */
.sec { padding: clamp(80px, 10vw, 128px) 0; }
.sec--surface { background: var(--surface); }
.sec--dark { background: var(--dark); }
.sec--green { background: var(--green); }
.row { display: grid; grid-template-columns: 3fr 9fr; gap: 40px; }
.row > .label { position: sticky; top: calc(var(--header-h) + 24px); align-self: start; padding-top: 4px; }
.label-group { position: relative; }
.group-rail { position: absolute; inset: 0; z-index: 1; pointer-events: none; }
.group-rail .wrap { height: 100%; padding-top: calc(clamp(80px, 10vw, 128px) + 4px); }
.group-rail .label { position: sticky; top: calc(var(--header-h) + 24px); transition: color .2s ease; }
.group-rail .label.on-green { color: var(--green-text); }
.label-group .label--inline { visibility: hidden; }
.col > h2 { margin-bottom: 28px; }
.col > p { max-width: 62ch; color: var(--body); }
.col > p + p { margin-top: 18px; }

/* Two short sections side by side, divided by a rule */
.split { display: grid; grid-template-columns: 1fr 1fr; }
.split > div { display: grid; grid-row: span 4; grid-template-rows: subgrid; row-gap: 0; align-items: start; }
.split > div > .more { justify-self: start; }
.split > div:first-child { padding-right: 48px; }
.split > div + div { padding-left: 48px; border-left: 1px solid var(--line); }
.split .label { margin-bottom: 16px; }
.split h2 { margin-bottom: 24px; }
.split p { color: var(--body); max-width: 46ch; }

/* ---------- 10-50 MW band ---------- */
.band-figure { font: 300 clamp(72px, 8.4vw, 112px)/0.9 var(--serif); letter-spacing: -.03em; white-space: nowrap; }
.band .col > .band-figure { color: var(--on-dark); max-width: none; margin-bottom: 40px; }
.principles { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 56px; border-top: 1px solid var(--on-dark-line); }
.principles li { padding: 20px 24px 0 0; }
.principles li + li { padding-left: 24px; border-left: 1px solid var(--on-dark-line); }
.principles .h3, .principles .small { display: block; }
.principles .h3 { margin-bottom: 4px; }

/* ---------- Item lists (evidence, values) ---------- */
.items { display: grid; grid-template-columns: repeat(3, 1fr); column-gap: 32px; margin-top: 40px; }
.items > li { border-top: 1px solid var(--line-strong); padding: 20px 0 8px; display: grid; grid-row: span 2; grid-template-rows: subgrid; row-gap: 0; }
.items h3 { margin-bottom: 10px; }
.items--2 { grid-template-columns: 1fr 1fr; column-gap: 48px; }
.items--2 > li { padding-bottom: 22px; }
.values { display: grid; grid-template-columns: 1fr 1fr; gap: 0 48px; margin-top: 40px; }
.values li { border-top: 1px solid var(--line-strong); padding: 16px 0 18px; }

/* Cards (customers, modules), after Ricardo's Direction 03: shared hairline rules, no shadows */
.cards { display: grid; gap: 1px; margin-top: 48px; background: var(--line-strong); border: 1px solid var(--line-strong); }
.cards--3 { grid-template-columns: repeat(3, 1fr); }
.cards--5 { grid-template-columns: repeat(5, 1fr); }
.card { display: flex; flex-direction: column; background: var(--paper); padding: 26px 22px 22px; }
.cards--surface .card { background: var(--surface); padding: 30px 28px 32px; }
.card h3 { margin: 72px 0 10px; }
.card strong { color: var(--ink); font-weight: 600; }
.card .small { margin-bottom: 24px; }
.card .small:last-child { margin-bottom: 0; }
.cards--5 .card { display: grid; grid-row: span 4; grid-template-rows: subgrid; row-gap: 0; }
.cards--3 .card { display: grid; grid-row: span 3; grid-template-rows: subgrid; row-gap: 0; align-items: start; }
.cards--5 .card .tags { margin-top: 0; }
.card .tags { margin-top: auto; padding-top: 14px; border-top: 1px solid var(--line); font-size: 14px; line-height: 1.5; color: var(--muted); }

/* System diagram, adapted from Ricardo's Direction 03, carrying Direction B's flow line */
.system { margin-top: 56px; }
.system--carbon { margin: 40px 0 8px; }
.system svg { display: block; width: 100%; height: auto; }
.system .flow-line { display: none; }
.sv-hill { fill: var(--art-hill); }
.sv-box { fill: var(--paper); stroke: var(--art-line); stroke-width: 2; }
.sv-line { fill: none; stroke: var(--art-line); stroke-width: 2; }
.sv-dark { fill: var(--green); }
.sv-flow { fill: none; stroke: var(--orange); stroke-width: 2; stroke-dasharray: 7 7; }
.sv-node { fill: var(--paper); stroke: var(--green); stroke-width: 2; }
.sv-heat { fill: none; stroke: var(--gold); stroke-width: 2; stroke-dasharray: 5 5; }
.sv-label { font: 500 16px var(--sans); fill: var(--ink); }
.sv-note { font: 400 14px var(--sans); fill: var(--muted); }

/* Flow line, from Direction B (phone fallback for the diagram) */
.flow-line { position: relative; display: grid; grid-template-columns: repeat(5, 1fr); }
.flow-line::before { content: ""; position: absolute; top: 8px; left: 10%; right: 10%; border-top: 1.5px dashed var(--orange); }
.flow-line li { position: relative; padding-top: 34px; text-align: center; font-size: 15px; }
.flow-line li::before { content: ""; position: absolute; top: 0; left: 50%; transform: translateX(-50%); width: 18px; height: 18px; border-radius: 50%; border: 2px solid var(--green); background: var(--paper); }

/* ---------- Pathway tabs ---------- */
.tabs { margin-top: 40px; }
.tab-list { display: flex; gap: 28px; border-bottom: 1px solid var(--on-dark-line); }
.tab-list button { font: 500 16px var(--sans); color: var(--green-text); background: none; border: 0; border-bottom: 2px solid transparent; margin-bottom: -1px; padding: 12px 0; cursor: pointer; }
.tab-list button:hover, .tab-list button[aria-selected="true"] { color: var(--on-dark); }
.tab-list button[aria-selected="true"] { border-bottom-color: var(--gold); }
.tab-panel { padding: 28px 0 0; max-width: 62ch; }
.tab-panel h3 { margin-bottom: 12px; }
.tab-panel p { color: var(--green-text); }
.is-green :focus-visible { outline-color: var(--on-dark); }

/* ---------- Development sequence ---------- */
.steps { margin-top: 32px; counter-reset: step; }
.steps li { counter-increment: step; display: grid; grid-template-columns: 56px 1fr; align-items: baseline; padding: 16px 0; border-top: 1px solid var(--line); }
.steps li:last-child { border-bottom: 1px solid var(--line); }
.steps li::before { content: counter(step); font: 400 26px/1 var(--serif); color: var(--green); }

/* ---------- Team list ---------- */
.people > li { display: grid; grid-template-columns: 3fr 9fr; gap: 8px 40px; padding: 32px 0; border-top: 1px solid var(--line-strong); }
.people > li:last-child { border-bottom: 1px solid var(--line-strong); }
.people .label { margin-top: 4px; }
.people > li > p { color: var(--body); max-width: 62ch; }

/* ---------- Investor access ---------- */
.access .col > p { color: var(--on-dark-muted); }
.access .col > .access-action { margin-top: 36px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--foot); color: var(--foot-text); padding: 40px 0 48px; font-size: 14px; line-height: 1.6; }
.footer-grid { display: grid; grid-template-columns: 3fr 9fr; gap: 20px 40px; align-items: start; }
.footer-brand { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; }
.footer-mark { width: 64px; height: auto; flex: none; }
.footer-note { max-width: 78ch; }

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  :root { --gutter: 40px; }
  .site-nav ul { gap: 22px; }
  .cards--5 { grid-template-columns: 1fr 1fr; }
  .cards--5 .card:last-child { grid-column: 1 / -1; }
  .card h3 { margin-top: 28px; }
  .split { grid-template-columns: 1fr; }
  .split > div:first-child { padding: 0 0 64px; }
  .split > div + div { padding: 64px 0 0; border-left: 0; border-top: 1px solid var(--line); }
}
@media (max-width: 900px) {
  .brand-name { display: none; }
  .site-nav { gap: 20px; }
  .site-nav ul { gap: 18px; }
  .site-nav ul a { font-size: 14px; }
  .row, .people > li, .footer-grid { grid-template-columns: 1fr; gap: 0; }
  .row > .label { position: static; padding: 0 0 14px; }
  .group-rail { display: none; }
  .label-group .label--inline { visibility: visible; }
  .people .label { margin: 2px 0 12px; }
  .hero-copy { grid-template-columns: 1fr; gap: 32px; }
  .hero-side { margin-top: 0; padding: 20px 0 0; border-left: 0; border-top: 1px solid var(--on-dark-line); }
  .principles { grid-template-columns: 1fr; margin-top: 48px; }
  .principles li, .principles li + li { padding: 16px 0; border-left: 0; border-bottom: 1px solid var(--on-dark-line); }
  .items, .items--2, .cards--3 { grid-template-columns: 1fr; }
  .items > li { display: block; }
  .footer-grid { gap: 20px; }
}
@media (max-width: 760px) {
  :root { --gutter: 20px; --header-h: 68px; }
  body { font-size: 17px; }
  /* The 72px floor overruns a 375px phone; scale the figure with the viewport instead */
  .band-figure { font-size: clamp(48px, 17vw, 72px); }
  .brand-mark { width: 68px; }
  .menu-toggle { display: inline-block; }
  .site-nav { position: fixed; inset: var(--header-h) 0 auto 0; display: none; flex-direction: column; align-items: stretch; gap: 0; background: var(--paper); color: var(--ink); padding: 8px var(--gutter) 24px; box-shadow: 0 1px 0 var(--line), 0 12px 24px rgba(16,20,17,.12); }
  .site-header.is-open .site-nav { display: flex; }
  .site-header.is-open { background: var(--paper); color: var(--ink); box-shadow: 0 1px 0 var(--line); }
  .site-header.is-open .brand-mark--light { display: none; }
  .site-header.is-open .brand-mark--dark { display: block; }
  .site-nav ul { flex-direction: column; gap: 0; }
  .site-nav ul a { padding: 14px 0; font-size: 18px; border-bottom: 1px solid var(--line); }
  .site-nav ul a:hover, .site-nav ul a[aria-current], .is-solid .site-nav ul a[aria-current] { box-shadow: none; color: var(--green); }
  .nav-cta, .is-solid .nav-cta, .is-open .nav-cta { display: block; text-align: center; margin-top: 20px; background: var(--green); color: var(--on-dark); }
  .hero-copy { padding-bottom: 48px; }
  .hero .lede, .hero-side p, .page-hero .lede { font-size: 18px; }
  .values { grid-template-columns: 1fr; }
  .cards--5 { grid-template-columns: 1fr; }
  .system { background: var(--paper); padding: 24px 20px; }
  .system svg { display: none; }
  .system .flow-line { display: grid; grid-template-columns: 1fr; gap: 18px; }
  .flow-line::before { top: 10px; bottom: 10px; left: 8px; right: auto; border-top: 0; border-left: 1.5px dashed var(--orange); }
  .flow-line li { padding: 0 0 0 36px; text-align: left; }
  .flow-line li::before { left: 0; top: 2px; transform: none; }
  .tab-list { gap: 20px; overflow-x: auto; overflow-y: hidden; scrollbar-width: none; }
  .tab-list button { flex: none; }
  h3, .h3 { font-size: 23px; }
}