/* Brantley Fusion Systems — site stylesheet */
:root {
  --bg: #0b0c0e;
  --bg-elev: #12141a;
  --bg-panel: #171a22;
  --line: rgba(198, 240, 0, 0.18);
  --line-soft: rgba(255, 255, 255, 0.08);
  --text: #e8eae6;
  --muted: #9aa19a;
  --lime: #c6f000;
  --lime-dim: #9bbb00;
  --lime-ink: #101208;
  --warm: #d8c4a4;
  --danger-soft: #3a2f24;
  --max: 1120px;
  --header-h: 4.25rem;
  --radius: 14px;
  --font: "IBM Plex Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(198, 240, 0, 0.08), transparent 55%),
    radial-gradient(900px 500px at -10% 20%, rgba(216, 196, 164, 0.06), transparent 50%),
    var(--bg);
  line-height: 1.55;
  min-height: 100vh;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--lime); text-underline-offset: 0.18em; }
a:hover { color: #ddff4a; }
:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -100px;
  background: var(--lime);
  color: var(--lime-ink);
  padding: 0.6rem 0.9rem;
  z-index: 1000;
  font-weight: 600;
}
.skip-link:focus { top: 1rem; }

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(11, 12, 14, 0.82);
  border-bottom: 1px solid var(--line-soft);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--header-h);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text);
  min-width: 0;
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 52px;
  height: 52px;
  padding: 4px;
  border-radius: 8px;
  /* Classic BFS: black mark on light ground (matches original cream site) */
  background: #f6f3ec;
  border: 1px solid rgba(246, 243, 236, 0.9);
}
.brand-logo img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  display: block;
  /* Keep original black pixels — no invert/greyscale/opacity */
  filter: none;
  opacity: 1;
  mix-blend-mode: normal;
}
.brand img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  flex: 0 0 auto;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  min-width: 0;
}
.brand-text strong {
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.brand-text span {
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line-soft);
  background: var(--bg-panel);
  color: var(--text);
  border-radius: 999px;
  padding: 0.55rem 0.9rem;
  font: inherit;
  cursor: pointer;
}
.nav-toggle[aria-expanded="true"] { border-color: var(--lime); color: var(--lime); }

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.35rem 1.1rem;
}
.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
  padding: 0.35rem 0.15rem;
  border-bottom: 1px solid transparent;
}
.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--text);
  border-bottom-color: var(--lime);
}
.site-nav .btn { margin-left: 0.35rem; }
.site-nav a.btn,
.site-nav a.btn:hover,
.site-nav a.btn:focus-visible,
.site-nav a.btn[aria-current="page"] {
  border-bottom: none;
  text-decoration: none;
  padding: 0.7rem 1.15rem;
}
.site-nav a.btn-primary,
.site-nav a.btn-primary:hover,
.site-nav a.btn-primary:focus-visible,
.site-nav a.btn-primary[aria-current="page"] {
  color: var(--lime-ink);
  background: var(--lime);
}
.site-nav a.btn-primary:hover {
  background: #d7ff33;
  color: var(--lime-ink);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.7rem 1.15rem;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--lime);
  color: var(--lime-ink);
}
.btn-primary:hover { background: #d7ff33; color: var(--lime-ink); }
.btn-ghost {
  background: transparent;
  border-color: var(--line-soft);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--lime); color: var(--lime); }

/* Hero */
.hero {
  padding: 4.5rem 0 3.5rem;
  position: relative;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--lime);
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.eyebrow::before {
  content: "";
  width: 1.4rem;
  height: 1px;
  background: var(--lime);
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
  max-width: 14ch;
}
.hero h1 em {
  font-style: normal;
  color: var(--lime);
}
.lead {
  font-size: 1.08rem;
  color: var(--muted);
  max-width: 42rem;
  margin: 0 0 1.6rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.6rem;
}
.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  color: var(--muted);
  font-size: 0.88rem;
}
.meta-row strong { color: var(--text); font-weight: 600; }

.hero-visual {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 380px;
  height: min(52vw, 480px);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  background:
    linear-gradient(160deg, rgba(198, 240, 0, 0.05), transparent 40%),
    var(--bg-elev);
  box-shadow: var(--shadow);
  overflow: hidden;
  isolation: isolate;
}
.hero-visual.is-3d {
  touch-action: none;
  overscroll-behavior: contain;
}
.hero-3d {
  position: absolute;
  inset: 0;
  z-index: 2;
  outline: none;
  touch-action: none;
  overscroll-behavior: contain;
}
.hero-3d canvas {
  width: 100% !important;
  height: 100% !important;
  display: block;
  cursor: grab;
  touch-action: none;
  -ms-touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}
.hero-3d canvas:active { cursor: grabbing; }
.hero-fallback {
  width: 100%;
  height: 100%;
  min-height: 320px;
  flex: 1 1 auto;
  display: block;
  z-index: 1;
}
.hero-visual.is-3d .hero-fallback { display: none !important; }
.hero-visual.has-fallback .hero-3d { display: none; }
.hero-visual.has-fallback .hero-fallback {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  min-height: 320px;
  display: block;
}
.visual-caption { display: none; }

/* Sections */
.section { padding: 4rem 0; }
.section-muted { background: rgba(255, 255, 255, 0.015); border-block: 1px solid var(--line-soft); }
.section-head {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: end;
  margin-bottom: 2rem;
}
.section-head h2 {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.02em;
}
.section-head p {
  margin: 0.55rem 0 0;
  color: var(--muted);
  max-width: 40rem;
}
.kicker {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--lime-dim);
  margin: 0 0 0.55rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.card {
  background: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 1.25rem 1.2rem 1.35rem;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--lime), transparent 70%);
  opacity: 0.7;
}
.card h3 {
  margin: 0 0 0.55rem;
  font-size: 1.08rem;
}
.card p, .card li { color: var(--muted); font-size: 0.95rem; }
.card ul {
  margin: 0.6rem 0 0;
  padding-left: 1.1rem;
}
.card li { margin: 0.25rem 0; }

/* Services explorer */
.explorer {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 1rem;
  border: 1px solid var(--line-soft);
  border-radius: calc(var(--radius) + 2px);
  background: var(--bg-elev);
  overflow: hidden;
  min-height: 320px;
}
.explorer-tabs {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.75rem;
  border-right: 1px solid var(--line-soft);
  background: rgba(0,0,0,0.18);
}
.explorer-tabs button {
  text-align: left;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  border-radius: 10px;
  padding: 0.75rem 0.8rem;
  font: inherit;
  cursor: pointer;
}
.explorer-tabs button[aria-selected="true"] {
  color: var(--lime-ink);
  background: var(--lime);
  font-weight: 600;
}
.explorer-tabs button:hover:not([aria-selected="true"]) {
  color: var(--text);
  border-color: var(--line-soft);
  background: rgba(255,255,255,0.03);
}
.explorer-panels { padding: 1.35rem 1.4rem 1.5rem; }
.explorer-panel[hidden] { display: none; }
.explorer-panel h3 { margin: 0 0 0.6rem; font-size: 1.25rem; }
.explorer-panel p { color: var(--muted); margin-top: 0; }
.tag-row { display: flex; flex-wrap: wrap; gap: 0.45rem; margin-top: 1rem; }
.tag {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--warm);
  border: 1px solid rgba(216, 196, 164, 0.28);
  border-radius: 999px;
  padding: 0.28rem 0.65rem;
}

/* Work / filters */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1.1rem;
}
.filters button {
  border: 1px solid var(--line-soft);
  background: transparent;
  color: var(--muted);
  border-radius: 999px;
  padding: 0.45rem 0.85rem;
  font: inherit;
  font-size: 0.86rem;
  cursor: pointer;
}
.filters button[aria-pressed="true"] {
  background: rgba(198, 240, 0, 0.12);
  border-color: var(--lime);
  color: var(--lime);
}

.work-list {
  display: grid;
  gap: 0.85rem;
}
.work-item {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--bg-panel);
  padding: 1.15rem 1.2rem;
}
.work-item[hidden] { display: none; }
.work-top {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.45rem;
}
.work-item h3 { margin: 0; font-size: 1.05rem; }
.work-role {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--lime-dim);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.work-item p { margin: 0.35rem 0 0; color: var(--muted); font-size: 0.95rem; }
.work-item ul { margin: 0.55rem 0 0; padding-left: 1.1rem; color: var(--muted); }
.note {
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  border-left: 3px solid var(--lime);
  background: rgba(198, 240, 0, 0.05);
  color: var(--muted);
  font-size: 0.9rem;
}

.affiliates {
  margin-top: 1.5rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 1rem;
  background: #f4efe6;
}
.affiliates img {
  width: 100%;
  max-width: 820px;
  margin: 0 auto;
  mix-blend-mode: multiply;
}
.affiliates figcaption {
  color: #5c574f;
  font-size: 0.82rem;
  margin-top: 0.75rem;
  text-align: center;
}

/* Accordion */
.accordion {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-panel);
}
.acc-item + .acc-item { border-top: 1px solid var(--line-soft); }
.acc-item button {
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  color: var(--text);
  font: inherit;
  font-weight: 600;
  padding: 1rem 1.1rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}
.acc-item button span {
  color: var(--lime);
  font-family: var(--mono);
}
.acc-panel {
  padding: 0 1.1rem 1.1rem;
  color: var(--muted);
}
.acc-panel[hidden] { display: none; }

/* CTA band */
.cta-band {
  margin: 1rem 0 0;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  padding: 1.6rem 1.4rem;
  background:
    linear-gradient(120deg, rgba(198, 240, 0, 0.1), transparent 45%),
    var(--bg-elev);
  display: grid;
  grid-template-columns: 1.4fr auto;
  gap: 1rem;
  align-items: center;
}
.cta-band h2 { margin: 0 0 0.4rem; font-size: 1.45rem; }
.cta-band p { margin: 0; color: var(--muted); }
.cta-actions { display: flex; flex-wrap: wrap; gap: 0.6rem; justify-content: flex-end; }
.email-plain {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--lime);
}
.email-plain:hover { color: var(--lime); }

/* Page hero compact */
.page-hero {
  padding: 3.2rem 0 1.5rem;
  border-bottom: 1px solid var(--line-soft);
}
.page-hero h1 {
  margin: 0 0 0.7rem;
  font-size: clamp(2rem, 4vw, 2.8rem);
  letter-spacing: -0.03em;
}
.page-hero p {
  margin: 0;
  color: var(--muted);
  max-width: 46rem;
  font-size: 1.05rem;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.prose p { color: var(--muted); }
.prose h2 { margin-top: 0; }
.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
.stat {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 1rem;
  background: var(--bg-panel);
}
.stat strong {
  display: block;
  font-size: 1.35rem;
  color: var(--lime);
  letter-spacing: -0.02em;
}
.stat span { color: var(--muted); font-size: 0.88rem; }

/* Footer */
.site-footer {
  margin-top: 3rem;
  border-top: 1px solid var(--line-soft);
  padding: 2.2rem 0 2.5rem;
  background: #08090b;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 1.5rem;
}
.site-footer h2 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.site-footer p, .site-footer a { color: var(--muted); }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: var(--lime); }
.footer-links { display: grid; gap: 0.4rem; }
.footer-bottom {
  margin-top: 1.6rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line-soft);
  color: var(--muted);
  font-size: 0.82rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.2rem;
  justify-content: space-between;
}

@media (max-width: 900px) {
  .hero-grid,
  .split,
  .footer-grid,
  .cta-band,
  .explorer,
  .card-grid,
  .section-head { grid-template-columns: 1fr; }
  .explorer-tabs {
    flex-direction: row;
    overflow-x: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
  }
  .explorer-tabs button { white-space: nowrap; }
  .cta-actions { justify-content: flex-start; }
  .nav-toggle { display: inline-flex; }
  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0.2rem;
    padding: 0.75rem 1.25rem 1rem;
    background: #0b0c0e; /* fully opaque so content does not show through */
    border-bottom: 1px solid var(--line-soft);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
    z-index: 60;
  }
  .site-nav.open { display: flex; }
  .site-nav .btn { margin: 0.4rem 0 0; width: fit-content; }
  .site-nav a.btn-primary,
  .site-nav a.btn-primary:hover,
  .site-nav a.btn-primary:focus-visible {
    color: var(--lime-ink);
  }
}
@media (max-width: 640px) {
  .container { width: min(100% - 1.5rem, var(--max)); }
  .stat-grid, .card-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 2.8rem; }
  .hero-visual { height: 360px; min-height: 340px; }
  .brand-text strong { font-size: 0.8rem; }
}