/* Brixton Infrastructure — site styles
   Structure: Groundwork (magazine grid, slab display, plate captions)
   Palette:   Ledger (see tokens.css) */

/* ============ base ============ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bx-bond-paper);
  color: var(--bx-ink-navy);
  font-family: var(--bx-font-body);
  -webkit-font-smoothing: antialiased;
}
img { display: block; }
a { color: var(--bx-signature-green); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--bx-ink-navy); }
::selection { background: var(--bx-ink-navy); color: var(--bx-bond-paper); }
.bx-wrap { max-width: var(--bx-maxw); margin: 0 auto; padding-left: var(--bx-gutter); padding-right: var(--bx-gutter); }
.bx-eyebrow {
  margin: 0;
  font-family: var(--bx-font-caption);
  font-weight: 600;
  font-size: var(--bx-fs-eyebrow);
  letter-spacing: var(--bx-ls-eyebrow);
  text-transform: uppercase;
  color: var(--bx-graphite);
}
.bx-split { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: var(--bx-gap); }

/* ============ buttons ============ */
.bx-btn {
  display: inline-block;
  background: var(--bx-signature-green);
  color: var(--bx-bond-paper);
  font-family: var(--bx-font-body);
  font-weight: 600;
  font-size: 18px;
  padding: 17px 32px;
  text-decoration: none;
  white-space: nowrap;
}
.bx-btn:hover { background: var(--bx-green-hover); color: var(--bx-bond-paper); }
.bx-btn--on-dark:hover { background: var(--bx-green-hover-dark); }
.bx-btn--sm { font-size: var(--bx-fs-ui); padding: 12px 22px; }
.bx-btn--block { display: block; text-align: center; padding: 18px 32px; }
.bx-link-quiet {
  color: var(--bx-bond-paper);
  font-size: 18px;
  text-decoration: underline;
  text-underline-offset: 5px;
  text-decoration-color: rgba(247, 245, 241, 0.4);
}
.bx-link-quiet:hover { color: var(--bx-bond-paper); text-decoration-color: var(--bx-bond-paper); }

/* ============ header ============ */
.bx-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(247, 245, 241, 0.94);
  backdrop-filter: saturate(1.1) blur(8px);
  border-bottom: 1px solid var(--bx-rule);
}
.bx-header__inner {
  min-height: var(--bx-header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(20px, 3vw, 40px);
}
.bx-header__logo { width: clamp(196px, 26vw, 388px); height: auto; }
.bx-nav { display: flex; align-items: center; gap: clamp(16px, 2.2vw, 34px); flex-wrap: nowrap; }
.bx-nav__links { display: flex; align-items: center; gap: clamp(16px, 2.2vw, 34px); }
.bx-nav__link {
  font-family: var(--bx-font-caption);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: var(--bx-ls-nav);
  text-transform: uppercase;
  color: var(--bx-ink-navy);
  text-decoration: none;
  white-space: nowrap;
}
.bx-nav__link:hover { color: var(--bx-signature-green); }
/* Active nav state — the one sanctioned second use of Seal Gold. Only ever
   apply this OR the proof-band gold rule on a given page, never both. */
.bx-nav__link[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--bx-seal-gold); }
.bx-nav__toggle {
  display: none;
  align-items: center;
  gap: 12px;
  background: none;
  border: 1px solid var(--bx-ink-navy);
  color: var(--bx-ink-navy);
  font-family: var(--bx-font-caption);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: var(--bx-ls-nav);
  text-transform: uppercase;
  padding: 13px 18px;
  cursor: pointer;
  white-space: nowrap;
}
.bx-nav__toggle:hover { background: var(--bx-ink-navy); color: var(--bx-bond-paper); }

/* ============ mobile menu ============ */
.bx-menu {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: var(--bx-ink-navy);
  color: var(--bx-bond-paper);
  display: flex;
  flex-direction: column;
  animation: bx-menu-in var(--bx-menu-in);
}
.bx-menu[hidden] { display: none; }
.bx-menu__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 28px;
  border-bottom: 1px solid var(--bx-rule-dark);
}
.bx-menu__logo { width: clamp(180px, 46vw, 260px); height: auto; }
.bx-menu__close {
  background: none;
  border: 1px solid rgba(247, 245, 241, 0.4);
  color: var(--bx-bond-paper);
  font-family: var(--bx-font-caption);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: var(--bx-ls-nav);
  text-transform: uppercase;
  padding: 13px 18px;
  cursor: pointer;
}
.bx-menu__close:hover { background: rgba(247, 245, 241, 0.1); }
.bx-menu__links { flex: 1; display: flex; flex-direction: column; padding: 12px 28px 0; overflow-y: auto; }
.bx-menu__link {
  font-family: var(--bx-font-display);
  font-weight: 500;
  font-size: clamp(26px, 6vw, 34px);
  color: var(--bx-bond-paper);
  text-decoration: none;
  padding: 22px 0;
  border-bottom: 1px solid var(--bx-rule-dark);
}
.bx-menu__foot { padding: 28px; border-top: 1px solid var(--bx-rule-dark); }

/* ============ hero ============ */
.bx-hero { position: relative; background: var(--bx-ink-navy); color: var(--bx-bond-paper); overflow: hidden; }
.bx-hero__motion { position: absolute; inset: 0; pointer-events: none; }
.bx-hero__chart { position: absolute; left: 0; right: 0; bottom: 0; width: 100%; height: 78%; opacity: 0.9; }
.bx-hero__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, #0E2A3A 34%, rgba(14, 42, 58, 0.86) 52%, rgba(14, 42, 58, 0.35) 78%, rgba(14, 42, 58, 0.55) 100%);
}
.bx-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
  gap: var(--bx-gap);
  align-items: end;
  min-height: 560px;
  padding-top: 118px;
  padding-bottom: var(--bx-section-y);
}
.bx-hero__eyebrow { margin: 0 0 34px; color: rgba(247, 245, 241, 0.62); }
.bx-hero__title {
  margin: 0;
  font-family: var(--bx-font-display);
  font-weight: 600;
  font-size: var(--bx-fs-hero);
  line-height: var(--bx-lh-hero);
  letter-spacing: var(--bx-ls-hero);
  text-wrap: balance;
}
.bx-hero__sub {
  margin: 34px 0 0;
  max-width: 62ch;
  font-size: var(--bx-fs-lead);
  line-height: 1.62;
  font-weight: 300;
  color: var(--bx-on-navy-strong);
  text-wrap: pretty;
}
.bx-hero__ctas { margin-top: 44px; display: flex; align-items: center; gap: 32px; flex-wrap: wrap; }
.bx-hero__key { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; padding-bottom: 8px; }
.bx-figcap { display: grid; min-height: 34px; align-content: start; }
.bx-figcap span {
  grid-area: 1 / 1;
  font-family: var(--bx-font-caption);
  font-weight: 600;
  font-size: var(--bx-fs-mono);
  letter-spacing: var(--bx-ls-label);
  text-transform: uppercase;
  color: var(--bx-on-navy-faint);
  line-height: 1.4;
}
.bx-legend { display: flex; align-items: center; gap: 18px; font-family: var(--bx-font-mono); font-size: var(--bx-fs-mono); color: rgba(247, 245, 241, 0.62); }
.bx-legend span { display: flex; align-items: center; gap: 8px; }
.bx-legend i { display: inline-block; width: 18px; }
.bx-legend i.gen { height: 2px; background: var(--bx-harbor-blue-lift); }
.bx-legend i.load { height: 1px; background: rgba(247, 245, 241, 0.45); }

/* hero chart animation — two phases in one 30s cycle:
   0–18%  draw load + solar   ·  44–62% draw the storage-shifted shape
   solar dims to 34% behind it  ·  92–98% reset */
@keyframes bx-draw { 0% { stroke-dashoffset: 3200; } 18%, 100% { stroke-dashoffset: 0; } }
@keyframes bx-solar-fill-dim { 0%, 11% { opacity: 0; } 22%, 44% { opacity: 1; } 60%, 92% { opacity: 0.35; } 98%, 100% { opacity: 1; } }
@keyframes bx-solar-dim { 0%, 44% { opacity: 1; } 60%, 92% { opacity: 0.34; } 98%, 100% { opacity: 1; } }
@keyframes bx-batt-line { 0%, 44% { stroke-dashoffset: 3200; opacity: 0; } 46% { opacity: 1; } 62%, 92% { stroke-dashoffset: 0; opacity: 1; } 98%, 100% { stroke-dashoffset: 0; opacity: 0; } }
@keyframes bx-batt-fill { 0%, 50% { opacity: 0; } 66%, 92% { opacity: 1; } 98%, 100% { opacity: 0; } }
@keyframes bx-cap-a { 0%, 44% { opacity: 1; } 52%, 92% { opacity: 0; } 98%, 100% { opacity: 1; } }
@keyframes bx-cap-b { 0%, 46% { opacity: 0; } 54%, 92% { opacity: 1; } 98%, 100% { opacity: 0; } }
@keyframes bx-menu-in { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: translateY(0); } }
.bx-anim-draw { animation: bx-draw var(--bx-cycle) var(--bx-ease) infinite; }
.bx-anim-solar-line { animation: bx-draw var(--bx-cycle) var(--bx-ease) infinite, bx-solar-dim var(--bx-cycle) var(--bx-ease) infinite; }
.bx-anim-solar-fill { animation: bx-solar-fill-dim var(--bx-cycle) var(--bx-ease) infinite; }
.bx-anim-batt-line { animation: bx-batt-line var(--bx-cycle) var(--bx-ease) infinite; }
.bx-anim-batt-fill { animation: bx-batt-fill var(--bx-cycle) var(--bx-ease) infinite; }
.bx-anim-cap-a { animation: bx-cap-a var(--bx-cycle) var(--bx-ease) infinite; }
.bx-anim-cap-b { opacity: 0; animation: bx-cap-b var(--bx-cycle) var(--bx-ease) infinite; }

/* ============ who we serve ============ */
.bx-serve { padding-top: var(--bx-section-y-lg); padding-bottom: var(--bx-section-y); }
.bx-serve__head { align-items: baseline; margin-bottom: 56px; }
.bx-serve__lede {
  margin: 0;
  font-family: var(--bx-font-display);
  font-weight: 500;
  font-size: var(--bx-fs-h2);
  line-height: var(--bx-lh-heading);
  letter-spacing: var(--bx-ls-heading);
  max-width: 24ch;
}
.bx-serve__grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--bx-rule-strong); }
.bx-card { display: block; text-decoration: none; color: var(--bx-ink-navy); padding: 30px 32px 40px; border-right: 1px solid var(--bx-rule); }
.bx-card:first-child { padding-left: 0; }
.bx-card:last-child { padding-right: 0; border-right: 0; }
.bx-card:hover { background: rgba(14, 42, 58, 0.03); color: var(--bx-ink-navy); }
.bx-card__idx { display: block; margin-bottom: 22px; font-family: var(--bx-font-mono); font-size: var(--bx-fs-caption); color: var(--bx-graphite); }
.bx-card__title { margin: 0 0 14px; font-family: var(--bx-font-display); font-weight: 600; font-size: var(--bx-fs-h3); line-height: 1.2; }
.bx-card__body { margin: 0; font-size: var(--bx-fs-card); line-height: var(--bx-lh-card); font-weight: 300; color: var(--bx-body-text); text-wrap: pretty; }

/* ============ plates (documentary photography) ============ */
.bx-plates { padding-top: 8px; padding-bottom: var(--bx-section-y); }
.bx-plates__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.bx-plate { margin: 0; }
.bx-plate__img {
  aspect-ratio: 4 / 3;
  width: 100%;
  object-fit: cover;
  background-color: var(--bx-ink-navy);
  /* Placeholder hatch — replace the div with an <img> once photography lands.
     Delivered images must be duotoned Ink Navy / Bond Paper. */
  background-image: repeating-linear-gradient(122deg, rgba(247, 245, 241, 0.11) 0 2px, rgba(247, 245, 241, 0) 2px 13px);
  display: flex;
  align-items: center;
  justify-content: center;
}
img.bx-plate__img { height: auto; display: block; }
.bx-plate__img span {
  font-family: var(--bx-font-mono);
  font-size: var(--bx-fs-mono);
  letter-spacing: 0.06em;
  color: rgba(247, 245, 241, 0.55);
  text-align: center;
  padding: 0 20px;
}
.bx-plate__cap {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--bx-rule);
  font-family: var(--bx-font-caption);
  font-weight: 600;
  font-size: var(--bx-fs-caption);
  letter-spacing: var(--bx-ls-plate);
  text-transform: uppercase;
  color: var(--bx-graphite);
}

/* ============ services ============ */
.bx-services { border-top: 1px solid var(--bx-rule); background: var(--bx-paper-shade); }
.bx-services__inner { align-items: start; padding-top: var(--bx-section-y); padding-bottom: 100px; }
.bx-services__head { position: sticky; top: 170px; }
.bx-services__lede {
  margin: 0;
  font-family: var(--bx-font-display);
  font-weight: 500;
  font-size: var(--bx-fs-h2);
  line-height: var(--bx-lh-heading);
  letter-spacing: var(--bx-ls-heading);
  max-width: 16ch;
}
.bx-row {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr) 34px;
  gap: 0 24px;
  align-items: baseline;
  padding: 30px 0;
  border-top: 1px solid var(--bx-rule);
  text-decoration: none;
  color: var(--bx-ink-navy);
}
.bx-row:first-child { border-top-color: var(--bx-rule-strong); }
.bx-row:last-child { border-bottom: 1px solid var(--bx-rule); }
.bx-row:hover { background: var(--bx-hover-wash); color: var(--bx-ink-navy); }
.bx-row__idx { font-family: var(--bx-font-mono); font-size: var(--bx-fs-caption); color: var(--bx-graphite); }
.bx-row__title { display: block; margin-bottom: 10px; font-family: var(--bx-font-display); font-weight: 600; font-size: var(--bx-fs-service); line-height: 1.2; }
.bx-row__body { display: block; font-size: var(--bx-fs-body-sm); line-height: var(--bx-lh-card); font-weight: 300; color: var(--bx-body-text); max-width: 62ch; text-wrap: pretty; }
.bx-row__arrow { font-size: 22px; color: var(--bx-graphite); text-align: right; }

/* ============ proof band ============ */
.bx-proof { background: var(--bx-ink-navy); color: var(--bx-bond-paper); }
.bx-proof__inner { padding-top: 88px; padding-bottom: 92px; }
/* The page's single dose of Seal Gold. */
.bx-proof__lead { display: flex; align-items: center; gap: 20px; margin-bottom: 52px; }
.bx-proof__rule { flex: 0 0 auto; width: 46px; height: 2px; background: var(--bx-seal-gold); }
.bx-proof__label {
  margin: 0;
  font-family: var(--bx-font-caption);
  font-weight: 600;
  font-size: var(--bx-fs-eyebrow);
  letter-spacing: var(--bx-ls-label);
  text-transform: uppercase;
  color: var(--bx-seal-gold);
}
.bx-proof__grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.bx-stat { padding: 0 32px; border-right: 1px solid var(--bx-rule-dark); }
/* Count-up reveal: both classes are applied only by site.js, and only when
   prefers-reduced-motion is not set, so the static page never hides a stat. */
.bx-stat.bx-stat--pending { opacity: 0; }
.bx-stat.bx-stat--shown { opacity: 1; transition: opacity 0.45s ease; }
.bx-stat:first-child { padding-left: 0; }
.bx-stat:last-child { padding-right: 0; border-right: 0; }
.bx-stat__fig {
  margin: 0 0 16px;
  font-family: var(--bx-font-mono);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  font-size: var(--bx-fs-stat);
  line-height: 1;
  letter-spacing: var(--bx-ls-hero);
  white-space: nowrap;
}
.bx-stat__label { margin: 0; font-size: var(--bx-fs-ui); line-height: 1.5; font-weight: 300; color: rgba(247, 245, 241, 0.72); max-width: 26ch; }

/* ============ featured insight ============ */
.bx-insight { padding-top: var(--bx-section-y-lg); padding-bottom: var(--bx-section-y-lg); }
.bx-insight__grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); align-items: center; }
/* The slot held a hatched placeholder until Aug 2026; the ERCOT chart SVG now
   fills it edge to edge, so the box is plain Ink Navy matching the chart's own
   ground (hatch and inset padding removed with the placeholder). */
.bx-insight__img {
  aspect-ratio: 16 / 11;
  width: 100%;
  background-color: var(--bx-ink-navy);
  display: block;
}
.bx-insight__panel { position: relative; z-index: 2; margin-left: -88px; padding: 52px 48px; background: var(--bx-bond-paper); border: 1px solid var(--bx-rule); }
.bx-insight__label { margin: 0 0 26px; letter-spacing: var(--bx-ls-label); }
.bx-insight__teaser {
  margin: 0 0 34px;
  font-family: var(--bx-font-display);
  font-weight: 500;
  font-size: var(--bx-fs-teaser);
  line-height: 1.26;
  letter-spacing: var(--bx-ls-heading);
  text-wrap: pretty;
}
.bx-insight__links { display: flex; align-items: center; gap: 18px; font-size: var(--bx-fs-body-sm); }
.bx-insight__links a { color: var(--bx-signature-green); font-weight: 600; text-decoration: underline; text-underline-offset: 4px; }
.bx-insight__links span { color: var(--bx-graphite); }

/* ============ closing CTA ============ */
.bx-closing { border-top: 1px solid var(--bx-rule); }
.bx-closing__inner {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: 72px;
  align-items: end;
  padding-top: var(--bx-section-y);
  padding-bottom: var(--bx-section-y-lg);
}
.bx-closing__title {
  margin: 0;
  font-family: var(--bx-font-display);
  font-weight: 600;
  font-size: var(--bx-fs-display);
  line-height: var(--bx-lh-display);
  letter-spacing: var(--bx-ls-hero);
  max-width: 16ch;
}
.bx-closing__body { margin: 0 0 34px; font-size: var(--bx-fs-body); line-height: var(--bx-lh-body); font-weight: 300; color: var(--bx-body-text); text-wrap: pretty; }

/* ============ footer ============ */
.bx-footer { background: var(--bx-ink-navy); color: var(--bx-bond-paper); }
.bx-footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 3.4fr) minmax(0, 2.6fr) minmax(0, 1.8fr) minmax(0, 3fr);
  gap: clamp(28px, 3vw, 48px);
  padding-top: 72px;
  padding-bottom: 40px;
}
.bx-footer__logo { width: auto; height: 52px; margin-bottom: 24px; }
.bx-footer__blurb { margin: 0; font-size: var(--bx-fs-ui); line-height: var(--bx-lh-body); font-weight: 300; color: var(--bx-on-navy-muted); max-width: 34ch; }
.bx-footer__head {
  margin: 0 0 20px;
  font-family: var(--bx-font-caption);
  font-weight: 600;
  font-size: var(--bx-fs-caption);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--bx-on-navy-faint);
}
.bx-footer__links { display: flex; flex-direction: column; gap: 12px; font-size: var(--bx-fs-ui); }
.bx-footer__links a { color: var(--bx-on-navy-strong); text-decoration: none; }
.bx-footer__links a:hover { color: var(--bx-bond-paper); text-decoration: underline; }
.bx-footer__bar { padding-top: 24px; padding-bottom: 44px; }
.bx-footer__bar > div {
  border-top: 1px solid var(--bx-rule-dark);
  padding-top: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  font-family: var(--bx-font-caption);
  font-size: var(--bx-fs-caption);
  letter-spacing: var(--bx-ls-nav);
  text-transform: uppercase;
  color: var(--bx-on-navy-faint);
}
.bx-footer__bar a { color: rgba(247, 245, 241, 0.62); text-decoration: none; }
.bx-footer__bar a:hover { color: var(--bx-bond-paper); text-decoration: underline; }
.bx-footer__legal { display: flex; gap: 26px; }

/* ============ responsive ============ */
@media (max-width: 1180px) {
  .bx-nav__links { display: none; }
  .bx-nav__toggle { display: inline-flex; }
}
@media (max-width: 1100px) {
  .bx-serve__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bx-card, .bx-card:first-child, .bx-card:last-child { padding: 28px 28px 34px 0; border-right: 0; border-top: 1px solid var(--bx-rule); }
  .bx-insight__panel { margin-left: -48px; padding: 40px 34px; }
  .bx-split { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .bx-services__head { position: static; }
}
@media (max-width: 900px) {
  .bx-hero__inner { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .bx-proof__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 44px; }
  .bx-stat, .bx-stat:first-child, .bx-stat:last-child { padding: 0 28px 0 0; border-right: 0; }
  .bx-insight__grid { grid-template-columns: minmax(0, 1fr); }
  .bx-insight__panel { margin-left: 0; margin-top: -40px; margin-right: 24px; }
  .bx-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 44px; }
  .bx-closing__inner { grid-template-columns: minmax(0, 1fr); gap: 36px; }
}
@media (max-width: 700px) {
  .bx-nav__cta { display: none; }
  .bx-serve__grid, .bx-plates__grid, .bx-footer__grid { grid-template-columns: minmax(0, 1fr); }
  .bx-proof__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 20px; }
  .bx-stat, .bx-stat:first-child, .bx-stat:last-child { padding: 0; }
  .bx-card, .bx-card:first-child, .bx-card:last-child { padding: 26px 0 32px; }
  .bx-wrap { padding-left: var(--bx-gutter-sm); padding-right: var(--bx-gutter-sm); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .bx-hero__motion *, .bx-figcap span, .bx-menu { animation: none !important; }
}