/* brownfield.solar — stylesheet */

@font-face {
  font-family: "Archivo";
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  font-stretch: 62% 125%;
  src: url("fonts/archivo.woff2") format("woff2-variations");
}
@font-face {
  font-family: "Archivo";
  font-style: italic;
  font-display: swap;
  font-weight: 100 900;
  font-stretch: 62% 125%;
  src: url("fonts/archivo-italic.woff2") format("woff2-variations");
}

:root {
  --paper: #F4F6F7;
  --white: #FFFFFF;
  --ink: #1B2A3A;
  --muted: #56626D;
  --line: #D8DFE4;
  --cell: #1E3A5F;
  --cell-gap: #2C4E78;
  --frame: #C9D1D6;
  --sun: #F2B632;
  --sun-dark: #D69A12;
  --error: #B3261E;

  --font: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --wrap: 1120px;
  --prose: 68ch;
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.6;
  font-stretch: 100%;
}

img, svg { max-width: 100%; height: auto; }

a { color: var(--cell); text-underline-offset: .18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }

:focus-visible { outline: 3px solid var(--sun); outline-offset: 3px; border-radius: 2px; }

.skip { position: absolute; left: -999px; top: 0; background: var(--sun); color: var(--ink); padding: .6rem 1rem; z-index: 10; }
.skip:focus { left: 1rem; top: 1rem; }

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

/* ---------- Type ---------- */
h1, h2, h3 { font-stretch: 118%; line-height: 1.12; margin: 0 0 .6em; letter-spacing: -.01em; }
h1 { font-size: clamp(2.1rem, 5.2vw, 3.9rem); font-weight: 640; }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); font-weight: 620; }
h3 { font-size: 1.2rem; font-weight: 640; font-stretch: 108%; }
p { margin: 0 0 1.1em; }
.lead { font-size: clamp(1.1rem, 1.6vw, 1.3rem); line-height: 1.5; max-width: 56ch; }
.muted { color: var(--muted); }

/* ---------- Header ---------- */
.site-header { background: var(--white); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 68px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: .6rem; text-decoration: none; color: var(--ink); font-weight: 700; font-stretch: 122%; font-size: 1.15rem; letter-spacing: -.01em; }
.brand svg { width: 26px; height: 26px; flex: none; }
.brand .bw span { color: var(--muted); font-weight: 500; }
@media (max-width: 560px) { .site-header .wrap { padding-block: .7rem; } .nav { gap: .5rem 1.1rem; } .nav .btn { width: 100%; text-align: center; } }
.nav { display: flex; align-items: center; gap: 1.4rem; flex-wrap: wrap; }
.nav a { color: var(--ink); text-decoration: none; font-size: .98rem; }
.nav a:hover, .nav a[aria-current="page"] { text-decoration: underline; }
.nav .btn { padding: .55rem 1rem; font-size: .95rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  background: var(--sun);
  color: var(--ink);
  font-family: inherit;
  font-weight: 650;
  font-size: 1.02rem;
  text-decoration: none;
  padding: .85rem 1.4rem;
  border: 2px solid var(--sun);
  border-radius: 3px;
  cursor: pointer;
  line-height: 1.2;
}
.btn:hover { background: var(--sun-dark); border-color: var(--sun-dark); text-decoration: none; }
.btn-ghost { background: transparent; color: var(--white); border-color: rgba(255,255,255,.55); }
.btn-ghost:hover { background: rgba(255,255,255,.1); border-color: var(--white); }

/* ---------- Hero: a PV module ---------- */
.hero {
  position: relative;
  color: var(--white);
  background-color: var(--cell);
  /* cell gaps + busbars: the hero is drawn as a solar module */
  background-image:
    repeating-linear-gradient(90deg, transparent 0 17px, rgba(201,209,214,.16) 17px 18px, transparent 18px 36px),
    linear-gradient(90deg, var(--cell-gap) 0 3px, transparent 3px),
    linear-gradient(0deg, var(--cell-gap) 0 3px, transparent 3px);
  background-size: 72px 72px;
  border-bottom: 10px solid var(--frame);
}
.hero::after {
  /* fade the grid under the text so the headline stays legible */
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(30,58,95,.97) 0%, rgba(30,58,95,.92) 48%, rgba(30,58,95,.35) 100%);
  pointer-events: none;
}
.hero .wrap { position: relative; z-index: 1; padding-block: clamp(4rem, 10vw, 7.5rem); }
.hero h1 { max-width: 17ch; }
.hero .lead { color: #DCE4EC; margin-bottom: 2rem; }
.hero-actions { display: flex; gap: .9rem; flex-wrap: wrap; }
.hero-facts {
  display: flex; flex-wrap: wrap; gap: .5rem 2rem;
  margin: 3rem 0 0; padding: 1.1rem 0 0; list-style: none;
  border-top: 1px solid rgba(255,255,255,.25);
  color: #DCE4EC; font-size: .98rem; max-width: 760px;
}

/* ---------- Sections ---------- */
.section { padding-block: clamp(3.5rem, 8vw, 6rem); }
.section + .section { border-top: 1px solid var(--line); }
.section-white { background: var(--white); }
.section-head { max-width: var(--prose); margin-bottom: 2.4rem; }
.section-head p { color: var(--muted); font-size: 1.1rem; }

.split { display: grid; gap: 2.5rem; grid-template-columns: 1fr; }
@media (min-width: 880px) { .split { grid-template-columns: 5fr 7fr; gap: 4rem; } }

/* asset types as a definition list */
.assets { margin: 0; border-top: 2px solid var(--ink); }
.assets div { display: grid; grid-template-columns: 1fr; gap: .3rem; padding: 1.2rem 0; border-bottom: 1px solid var(--line); }
@media (min-width: 640px) { .assets div { grid-template-columns: 15rem 1fr; gap: 1.5rem; } }
.assets dt { font-weight: 650; font-stretch: 108%; }
.assets dd { margin: 0; color: var(--muted); }

/* process — a real sequence, so numbered */
.steps { list-style: none; counter-reset: step; margin: 0; padding: 0; display: grid; gap: 0 3rem; grid-template-columns: 1fr; }
@media (min-width: 760px) { .steps { grid-template-columns: 1fr 1fr; } }
.steps li { counter-increment: step; position: relative; padding: 1.3rem 0 1.3rem 3.4rem; border-top: 1px solid var(--line); }
.steps li::before {
  content: counter(step);
  position: absolute; left: 0; top: 1.25rem;
  width: 2.2rem; height: 2.2rem;
  display: grid; place-items: center;
  background: var(--cell); color: var(--white);
  font-weight: 650; font-size: .95rem;
  border-radius: 2px;
}
.steps h3 { margin-bottom: .3em; }
.steps p { margin: 0; color: var(--muted); }

/* opportunities table */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.deals { width: 100%; border-collapse: collapse; min-width: 640px; background: var(--white); }
.deals th, .deals td { text-align: left; padding: .95rem 1rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.deals thead th { font-size: .9rem; font-weight: 600; color: var(--muted); border-bottom: 2px solid var(--ink); }
.deals td:last-child { white-space: nowrap; }
.deals a { font-weight: 600; }
.note { font-size: .92rem; color: var(--muted); margin-top: 1rem; }

/* confidentiality band */
.band { background: var(--ink); color: var(--white); }
.band p { color: #D3DBE2; max-width: var(--prose); }
.band h2 { max-width: 24ch; }

/* FAQ */
.faq { max-width: 820px; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; padding: 1.15rem 2.5rem 1.15rem 0; position: relative; font-weight: 620; font-size: 1.08rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: .3rem; top: .95rem; font-size: 1.5rem; font-weight: 400; color: var(--cell); transition: transform .2s ease; }
.faq details[open] summary::after { transform: rotate(45deg); }
@media (prefers-reduced-motion: reduce) { .faq summary::after { transition: none; } }
.faq details > div { padding: 0 0 1.2rem; color: var(--muted); max-width: var(--prose); }

/* CTA block */
.cta-block { background: var(--sun); color: var(--ink); }
.cta-block .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.5rem; padding-block: 3rem; }
.cta-block h2 { margin: 0 0 .3rem; }
.cta-block p { margin: 0; max-width: 54ch; }
.cta-block .btn { background: var(--ink); border-color: var(--ink); color: var(--white); }
.cta-block .btn:hover { background: var(--cell); border-color: var(--cell); }

/* ---------- Article pages (guides) ---------- */
.page-head { background: var(--white); border-bottom: 1px solid var(--line); padding-block: clamp(2.5rem, 6vw, 4rem); }
.page-head .lead { color: var(--muted); }
.crumbs { font-size: .9rem; color: var(--muted); margin-bottom: 1.2rem; }
.crumbs a { color: var(--muted); }

.article { display: grid; gap: 3rem; grid-template-columns: 1fr; padding-block: 3rem 5rem; }
@media (min-width: 980px) { .article { grid-template-columns: minmax(0, 1fr) 280px; gap: 4.5rem; } }
.prose { max-width: var(--prose); }
.prose h2 { font-size: clamp(1.4rem, 2.4vw, 1.8rem); margin-top: 2.2em; }
.prose h3 { margin-top: 1.8em; }
.prose ul, .prose ol { padding-left: 1.3rem; margin: 0 0 1.2em; }
.prose li { margin-bottom: .45em; }
.prose .callout { border-left: 4px solid var(--sun); background: var(--white); padding: 1rem 1.2rem; margin: 1.6em 0; }
.prose .callout p:last-child { margin: 0; }

.aside-box { position: sticky; top: 1.5rem; background: var(--cell); color: var(--white); padding: 1.6rem; border-radius: 3px; border-bottom: 6px solid var(--frame); }
.aside-box h2 { font-size: 1.25rem; font-stretch: 112%; }
.aside-box p { color: #DCE4EC; font-size: .98rem; }
.aside-box .btn { width: 100%; text-align: center; }
.aside-links { margin-top: 1.8rem; padding: 0; list-style: none; font-size: .96rem; }
.aside-links li { padding: .55rem 0; border-top: 1px solid var(--line); }

/* ---------- Form ---------- */
.form-wrap { display: grid; gap: 3rem; grid-template-columns: 1fr; padding-block: 3rem 5rem; }
@media (min-width: 980px) { .form-wrap { grid-template-columns: minmax(0, 1fr) 300px; gap: 4.5rem; } }
.form { background: var(--white); border: 1px solid var(--line); border-top: 4px solid var(--cell); padding: clamp(1.4rem, 4vw, 2.4rem); }
.form fieldset { border: 0; margin: 0 0 2rem; padding: 0; }
.form legend { font-weight: 650; font-stretch: 112%; font-size: 1.2rem; margin-bottom: 1rem; padding: 0; }
.grid-2 { display: grid; gap: 1rem 1.2rem; grid-template-columns: 1fr; }
@media (min-width: 640px) { .grid-2 { grid-template-columns: 1fr 1fr; } }
.field { display: flex; flex-direction: column; gap: .35rem; margin-bottom: 1rem; }
.grid-2 .field { margin-bottom: 0; }
.field label, .group-label { font-weight: 600; font-size: .96rem; }
.req { color: var(--error); }
.hint { font-size: .88rem; color: var(--muted); font-weight: 400; }
input[type="text"], input[type="email"], input[type="tel"], select, textarea {
  font: inherit; font-size: 1rem; color: var(--ink);
  background: var(--paper);
  border: 1px solid #B7C2CA; border-radius: 3px;
  padding: .7rem .8rem; width: 100%;
}
textarea { min-height: 8rem; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 3px solid var(--sun); outline-offset: 0; border-color: var(--cell); background: var(--white); }
.checks { display: grid; gap: .45rem 1.2rem; grid-template-columns: 1fr; margin: .5rem 0 1.2rem; }
@media (min-width: 560px) { .checks { grid-template-columns: 1fr 1fr; } }
.checks label, .consent label { display: flex; gap: .6rem; align-items: flex-start; font-weight: 400; font-size: .98rem; cursor: pointer; }
.checks input, .consent input { width: 1.1rem; height: 1.1rem; margin-top: .22rem; accent-color: var(--cell); flex: none; }
.consent { margin: 1rem 0 1.6rem; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.alert { border: 1px solid var(--error); background: #FCEEEE; color: var(--error); padding: 1rem 1.2rem; margin-bottom: 1.6rem; border-radius: 3px; }
.alert ul { margin: .4rem 0 0; padding-left: 1.2rem; }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: #C6D0D8; font-size: .94rem; padding-block: 3rem 2rem; }
.site-footer a { color: var(--white); }
.footer-grid { display: grid; gap: 2rem; grid-template-columns: 1fr; }
@media (min-width: 760px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr; } }
.site-footer h2 { font-size: 1rem; font-stretch: 110%; color: var(--white); margin-bottom: .7rem; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: .45rem; }
.legal { border-top: 1px solid rgba(255,255,255,.18); margin-top: 2.5rem; padding-top: 1.4rem; font-size: .86rem; }

/* WhatsApp secondary action */
.btn-wa { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-wa:hover { background: var(--ink); border-color: var(--ink); color: var(--white); }
.cta-actions { display: flex; flex-wrap: wrap; gap: .8rem; }
.cta-block .btn-wa { background: transparent; color: var(--ink); border-color: var(--ink); }
.cta-block .btn-wa:hover { background: var(--ink); color: var(--white); }