@font-face {
  font-family: 'Montserrat';
  font-weight: 800;
  font-display: swap;
  src: url('../fonts/montserrat-800.ttf') format('truetype');
}
@font-face {
  font-family: 'Montserrat';
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/montserrat-400.ttf') format('truetype');
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --black: #0f0f0f;
  --dark: #161616;
  --panel: #1e1e1e;
  --border: rgba(255,255,255,0.1);
  --border-mid: rgba(255,255,255,0.06);
  --white: #f5f5f5;
  --grey-1: #9a9a9a;
  --grey-2: #858585;
  --grey-3: #2a2a2a;
  --accent: #c8d8e8;
  --sans: 'Space Grotesk', sans-serif;
  --mono: 'Space Mono', monospace;
}

html { scroll-behavior: smooth; }
body { background: var(--black); color: var(--white); font-family: var(--sans); overflow-x: hidden; -webkit-font-smoothing: antialiased; }
section[id] { scroll-margin-top: 132px; }

/* ── NAV ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 48px;
  background: rgba(15,15,15,0.9);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: padding 0.3s ease, background-color 0.3s ease;
}
.nav-logo { font-family: 'Montserrat', 'Helvetica Neue', Arial, sans-serif; display: flex; flex-direction: column; line-height: 1; }
.nav-logo .sac { font-family: 'Montserrat', 'Helvetica Neue', Arial, sans-serif; font-weight: 800; font-size: 7em; letter-spacing: -0.5px; color: var(--white); transition: font-size 0.3s ease; }
.nav-logo .facades { font-family: 'Montserrat', 'Helvetica Neue', Arial, sans-serif; font-weight: 400; font-size: 5.5em; letter-spacing: 0.5px; color: var(--white); margin-top: -2px; transition: font-size 0.3s ease; }
nav.is-scrolled { padding-block: 10px; background: rgba(15,15,15,0.96); }
nav.is-scrolled .nav-logo .sac { font-size: 3.5em; }
nav.is-scrolled .nav-logo .facades { font-size: 2.75em; }
.nav-links { display: flex; gap: 32px; align-items: center; }
.nav-links > a,
.nav-dropdown > summary { font-family: var(--mono); font-size: 15px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--grey-1); text-decoration: none; transition: color 0.2s; }
.nav-links > a:hover,
.nav-links > a.active,
.nav-dropdown > summary:hover,
.nav-dropdown > summary.active,
.nav-dropdown[open] > summary { color: var(--white); }
.nav-dropdown { position: relative; }
.nav-dropdown-trigger { display: flex; align-items: center; }
.nav-dropdown-link,
.nav-dropdown-toggle {
  font-family: var(--mono); font-size: 15px; letter-spacing: 0.15em; line-height: 1;
  text-transform: uppercase; color: var(--grey-1); text-decoration: none; transition: color 0.2s;
}
.nav-dropdown-link:hover,
.nav-dropdown-link.active,
.nav-dropdown.is-open .nav-dropdown-link,
.nav-dropdown-toggle:hover { color: var(--white); }
.nav-dropdown-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 28px; padding: 0; border: 0; background: transparent; cursor: pointer;
}
.nav-dropdown > summary { display: flex; align-items: center; gap: 8px; list-style: none; cursor: pointer; }
.nav-dropdown > summary::-webkit-details-marker { display: none; }
.nav-dropdown-icon { font-size: 12px; line-height: 1; transition: transform 0.2s ease; }
.nav-dropdown[open] .nav-dropdown-icon,
.nav-dropdown.is-open .nav-dropdown-icon { transform: rotate(45deg); }
.nav-dropdown-menu {
  position: absolute; top: calc(100% + 12px); left: -20px;
  min-width: 300px; padding: 10px;
  background: rgba(22,22,22,0.98); border: 1px solid var(--border);
  box-shadow: 0 20px 50px rgba(0,0,0,0.42);
  opacity: 0; visibility: hidden; pointer-events: none;
  transform: translateY(-6px); transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
}
.nav-dropdown-menu::before { content: ''; position: absolute; left: 0; right: 0; top: -12px; height: 12px; }
.nav-dropdown.is-open .nav-dropdown-menu { opacity: 1; visibility: visible; pointer-events: auto; transform: none; }
.nav-dropdown-menu a {
  display: block; padding: 11px 12px; border-bottom: 1px solid var(--border-mid);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; line-height: 1.4;
  text-transform: uppercase; color: var(--grey-1); text-decoration: none; transition: color 0.2s, background-color 0.2s;
}
.nav-dropdown-menu a:last-child { border-bottom: 0; }
.nav-dropdown-menu a:hover,
.nav-dropdown-menu a:focus-visible,
.nav-dropdown-menu a.active { color: var(--white); background: rgba(255,255,255,0.05); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-mobile { display: none; position: relative; }
.nav-cta { font-family: var(--mono); font-size: 15px; letter-spacing: 0.15em; text-transform: uppercase; padding: 10px 22px; border: 1px solid var(--white); color: var(--white); background: transparent; cursor: pointer; text-decoration: none; transition: all 0.2s; }
.nav-cta:hover { background: var(--white); color: var(--black); }

/* ── HERO ── */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 55% 45%;
  padding-top: 240px;
  position: relative;
}
.hero-left {
  padding: 32px 64px 28px;
  display: flex; flex-direction: column; justify-content: space-between;
  border-right: 1px solid var(--border);
  position: relative; z-index: 1;
}
.hero-eyebrow {
  font-family: var(--mono); font-size: 15px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--grey-1);
  display: flex; align-items: center; gap: 12px; margin-bottom: 20px;
}
.hero-eyebrow::before { content: ''; width: 24px; height: 1px; background: var(--grey-1); }
.hero-h1 {
  font-size: clamp(48px, 4.6vw, 64px);
  font-weight: 600;
  line-height: 0.95;
  letter-spacing: -0.03em;
  color: var(--white);
}
.hero-h1 em { font-style: normal; font-weight: 300; color: var(--grey-1); display: block; }
.hero-desc {
  font-family: var(--mono); font-size: 16px; line-height: 1.65; color: var(--grey-1); max-width: 540px; margin-top: 18px; letter-spacing: 0.02em;
}
.hero-actions { display: flex; gap: 14px; margin-top: 24px; flex-wrap: wrap; }
.btn-primary {
  font-family: var(--mono); font-size: 14px; letter-spacing: 0.15em; text-transform: uppercase;
  padding: 14px 26px; background: var(--white); color: var(--black); border: 1px solid var(--white);
  cursor: pointer; text-decoration: none; transition: all 0.2s; display: inline-block;
}
.btn-primary:hover { background: transparent; color: var(--white); }
.btn-outline {
  font-family: var(--mono); font-size: 14px; letter-spacing: 0.15em; text-transform: uppercase;
  padding: 14px 26px; background: transparent; color: var(--white); border: 1px solid var(--border);
  cursor: pointer; text-decoration: none; transition: all 0.2s; display: inline-block;
}
.btn-outline:hover { border-color: var(--white); }

.hero-stats {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 0;
  margin-top: 28px; border-top: 1px solid var(--border); padding-top: 18px;
}
.stat-item { padding-right: 24px; }
.stat-item + .stat-item { padding-left: 24px; border-left: 1px solid var(--border); }
.stat-num { font-size: 30px; font-weight: 600; letter-spacing: -0.02em; color: var(--white); line-height: 1; }
.stat-label { font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--grey-2); margin-top: 6px; }

.hero-right {
  position: relative; overflow: hidden;
  background: var(--dark);
  display: flex; flex-direction: column; justify-content: flex-end;
}
.hero-visual {
  position: absolute; inset: 0;
  background: #0a0f14;
  display: flex; align-items: center; justify-content: center;
  isolation: isolate;
}
.hero-visual::before {
  content: ''; position: absolute; inset: -2%; z-index: 0;
  background: url('../images/facade-hero.webp') center center / cover no-repeat;
  filter: grayscale(1) contrast(0.72) brightness(0.72);
  opacity: 0.5;
}
.hero-visual::after {
  content: ''; position: absolute; inset: 0; z-index: 1;
  background:
    linear-gradient(180deg, rgba(6,8,10,0.12) 0%, rgba(6,8,10,0.42) 55%, rgba(6,8,10,0.94) 100%),
    linear-gradient(90deg, rgba(6,8,10,0.2), rgba(6,8,10,0.05));
}
.hero-window-art {
  width: 100%; height: 100%; position: absolute; z-index: 2;
  display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; gap: 8px;
  padding: 40px; opacity: 0.2;
}
.window-pane {
  border: 1.5px solid rgba(200,216,232,0.8);
  position: relative;
}
.window-pane::before {
  content: ''; position: absolute; top: 50%; left: 0; right: 0; height: 1.5px; background: rgba(200,216,232,0.8);
}
.window-pane::after {
  content: ''; position: absolute; top: 0; bottom: 0; left: 50%; width: 1.5px; background: rgba(200,216,232,0.8);
}
.hero-right-content {
  position: relative; z-index: 2; padding: 48px;
  background: none;
}
.hero-right-tag {
  font-family: var(--mono); font-size: 13.5px; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--grey-2); border: 1px solid var(--border); padding: 6px 12px; display: inline-block; margin-bottom: 20px;
}
.hero-right-title { font-size: 20px; font-weight: 600; letter-spacing: -0.01em; margin-bottom: 12px; }
.hero-right-body { font-family: var(--mono); font-size: 16.5px; line-height: 1.7; color: var(--grey-1); }

/* ── SECTION BASE ── */
section { border-top: 1px solid var(--border); }
.section-inner { padding: 120px 64px; }
.eyebrow {
  font-family: var(--mono); font-size: 15px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--grey-1);
  display: flex; align-items: center; gap: 12px; margin-bottom: 48px;
}
.eyebrow::before { content: ''; width: 24px; height: 1px; background: var(--grey-2); }
.section-title { font-size: clamp(32px, 4vw, 52px); font-weight: 600; letter-spacing: -0.02em; line-height: 1.0; margin-bottom: 64px; }
.section-title span { font-weight: 300; color: var(--grey-1); }

/* ── SYSTEMS GRID ── */
.systems-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; background: var(--border); }
.sys-card {
  background: var(--black); padding: 48px 40px;
  transition: background 0.25s;
  position: relative; overflow: hidden;
}
.sys-card:hover { background: var(--panel); }
.sys-card-num { font-family: var(--mono); font-size: 13.5px; letter-spacing: 0.2em; color: var(--grey-2); text-transform: uppercase; margin-bottom: 28px; }
.sys-card-icon {
  width: 48px; height: 48px; margin-bottom: 24px;
  display: flex; align-items: center; justify-content: center;
}
.sys-card-icon svg { width: 40px; height: 40px; stroke: var(--accent); fill: none; stroke-width: 1.2; }
.sys-card-name { font-size: 20px; font-weight: 600; letter-spacing: -0.01em; margin-bottom: 16px; }
.sys-card-desc { font-family: var(--mono); font-size: 16.5px; line-height: 1.8; color: var(--grey-1); }
.sys-card-spec { margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--border-mid); font-family: var(--mono); font-size: 13.5px; letter-spacing: 0.1em; color: var(--grey-2); text-transform: uppercase; line-height: 1.7; }

/* ── PROCESS ── */
.process-section { background: var(--dark); }
.process-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; background: var(--border); }
.process-step { background: var(--dark); padding: 48px 36px; }
.process-step-n { font-family: var(--mono); font-size: 13.5px; letter-spacing: 0.2em; color: var(--grey-2); margin-bottom: 20px; }
.process-step-arrow { width: 32px; height: 1px; background: var(--white); display: inline-block; margin-bottom: 24px;  }
.process-step-arrow
.process-step-name { font-size: 17px; font-weight: 600; letter-spacing: -0.01em; margin-bottom: 14px; }
.process-step-desc { font-family: var(--mono); font-size: 16.5px; line-height: 1.8; color: var(--grey-1); }

/* ── LEAD FORM ── */
.lead-section { background: var(--panel); }
.lead-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--border); }
.lead-left { background: var(--panel); padding: 80px 64px; }
.lead-right { background: var(--dark); padding: 80px 64px; }
.lead-intro { font-family: var(--mono); font-size: 18px; line-height: 1.9; color: var(--grey-1); max-width: 440px; margin-bottom: 40px; }
.lead-detail { margin-bottom: 32px; }
.lead-detail-label { font-family: var(--mono); font-size: 13.5px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--grey-2); margin-bottom: 6px; }
.lead-detail-val { font-size: 16px; font-weight: 500; }
.form-privacy-notice { margin-top: 18px; font-family: var(--mono); font-size: 11px; line-height: 1.65; color: var(--grey-2); }
.form-privacy-notice a { color: var(--white); text-underline-offset: 3px; }

/* ── SPECS BANNER ── */
.specs-bar {
  border-top: 1px solid var(--border);
  display: flex; overflow: hidden;
}
.spec-item {
  flex: 1; padding: 48px 40px;
  border-right: 1px solid var(--border);
}
.spec-item:last-child { border-right: none; }
.spec-label { font-family: var(--mono); font-size: 13.5px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--grey-2); margin-bottom: 10px; }
.spec-val { font-size: 38px; font-weight: 600; letter-spacing: -0.02em; line-height: 1; }
.spec-unit { font-family: var(--mono); font-size: 15px; color: var(--grey-1); margin-top: 6px; }

/* ── TESTIMONIALS ── */
.testi-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; background: var(--border); }
.testi-card { background: var(--black); padding: 48px 40px; }
.testi-stars { color: var(--accent); font-size: 21px; letter-spacing: 2px; margin-bottom: 20px; }
.testi-quote { font-size: 15px; font-weight: 400; line-height: 1.6; color: var(--white); margin-bottom: 28px; font-style: italic; }
.testi-author { font-family: var(--mono); font-size: 13.5px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--grey-2); }
.testi-co { color: var(--grey-1); margin-top: 4px; }

/* ── WHY SAC ── */
.why-grid {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px; background: var(--border);
}
.why-visual {
  background: var(--panel); aspect-ratio: 4/3; position: relative; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.why-visual::before {
  content: ''; position: absolute; inset: -2%;
  background-size: cover; background-position: center;
  filter: grayscale(1) contrast(0.74) brightness(0.68);
  opacity: 0.58; transform: scale(1.02);
  transition: transform 0.8s ease, opacity 0.8s ease;
}
.why-visual::after {
  content: ''; position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(10,10,10,0.12) 25%, rgba(10,10,10,0.88) 100%),
    linear-gradient(90deg, rgba(10,10,10,0.3), transparent 65%);
}
.why-visual:hover::before { transform: scale(1.055); opacity: 0.7; }
.why-visual--design::before {
  background-image: url('../images/why-design.webp');
  background-position: center 58%;
}
.why-visual--install::before {
  background-image: url('../images/why-install.webp');
  background-position: center;
}
.why-visual-inner {
  width: calc(100% - 48px); height: calc(100% - 48px); position: relative; z-index: 2;
  border: 1px solid rgba(255,255,255,0.22);
  display: grid; grid-template-rows: 1fr 1fr; gap: 4px; padding: 4px;
  opacity: 0.5;
}
.why-panel { border: 1px solid rgba(255,255,255,0.22); position: relative; }
.why-panel::before { content: ''; position: absolute; left: 50%; top: 0; bottom: 0; width: 1px; background: rgba(255,255,255,0.22); }
.why-panel::after { content: ''; position: absolute; top: 50%; left: 0; right: 0; height: 1px; background: rgba(255,255,255,0.22); }
.why-label {
  position: absolute; z-index: 3; bottom: 16px; left: 20px;
  font-family: var(--mono); font-size: 12px; color: var(--white);
  letter-spacing: 0.18em; text-transform: uppercase;
}

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--border);
  background: var(--dark);
}
.footer-top { padding: 72px 64px; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 64px; }
.footer-brand { min-width: 0; }
.footer-logo .sac { font-family: 'Montserrat', 'Helvetica Neue', Arial, sans-serif; font-size: 32px; font-weight: 800; letter-spacing: -0.5px; display: block; line-height: 1; }
.footer-logo .facades { font-family: 'Montserrat', 'Helvetica Neue', Arial, sans-serif; font-size: 26px; font-weight: 400; display: block; margin-top: -2px; }
.footer-tagline { font-family: var(--mono); font-size: 15px; color: var(--grey-2); line-height: 1.7; margin-top: 20px; letter-spacing: 0.05em; }
.footer-col-title { font-family: var(--mono); font-size: 13.5px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--grey-2); margin-bottom: 20px; }
.footer-col a, .footer-col p { font-family: var(--mono); font-size: 16.5px; color: var(--grey-1); text-decoration: none; display: block; margin-bottom: 10px; transition: color 0.2s; }
.footer-col a:hover { color: var(--white); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 24px 64px;
  display: flex; justify-content: space-between; align-items: center;
}
.footer-bottom-left { font-family: var(--mono); font-size: 13.5px; color: var(--grey-2); letter-spacing: 0.1em; text-transform: uppercase; }
.footer-bottom-right { font-family: var(--mono); font-size: 13.5px; color: var(--grey-2); letter-spacing: 0.1em; text-align: right; text-transform: uppercase; }
.footer-credits { display: flex; justify-content: flex-end; gap: 10px; margin-top: 8px; font-size: 11px; letter-spacing: 0.08em; }
.footer-credits a { color: var(--grey-1); text-decoration: underline; text-underline-offset: 2px; transition: color 0.2s; }
.footer-credits a:hover { color: var(--white); }
.footer-legal-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 14px; margin-top: 8px; }
.footer-legal-links a { color: var(--grey-1); text-decoration: underline; text-underline-offset: 2px; }

/* ── MOBILE ── */
@media (max-width: 900px) {
  nav { padding: 12px 16px; }
  .nav-logo .sac { font-size: 3.5em; }
  .nav-logo .facades { font-size: 2.75em; }
  nav.is-scrolled { padding-block: 8px; }
  nav.is-scrolled .nav-logo .sac { font-size: 2.75em; }
  nav.is-scrolled .nav-logo .facades { font-size: 2.1em; }
  .nav-links { display: none; }
  .nav-actions { gap: 8px; }
  .nav-mobile { display: block; }
  .nav-mobile > summary {
    list-style: none; cursor: pointer; padding: 9px 10px; border: 1px solid var(--border);
    font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--white);
  }
  .nav-mobile > summary::-webkit-details-marker { display: none; }
  .nav-mobile-panel {
    position: absolute; top: calc(100% + 12px); right: 0;
    width: min(340px, calc(100vw - 32px)); max-height: calc(100vh - 100px); overflow-y: auto;
    padding: 18px; background: rgba(22,22,22,0.99); border: 1px solid var(--border);
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
  }
  .nav-mobile-group + .nav-mobile-group { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--border); }
  .nav-mobile-label { margin-bottom: 7px; font-family: var(--mono); font-size: 9px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--grey-2); }
  .nav-mobile-panel a { display: block; padding: 9px 0; font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--grey-1); text-decoration: none; }
  .nav-mobile-panel a:hover,
  .nav-mobile-panel a:focus-visible,
  .nav-mobile-panel a.active { color: var(--white); }
  .nav-cta { font-size: 11px; letter-spacing: 0.12em; padding: 9px 12px; white-space: nowrap; }
  .hero { grid-template-columns: minmax(0, 1fr); padding-top: 132px; }
  .hero-left, .hero-right { min-width: 0; }
  .hero-left { padding: 60px 24px 48px; }
  .hero-right { min-height: 50vh; }
  .hero-right-content { padding: 32px 24px; }
  .hero-window-art { padding: 24px; }
  .hero-right-tag { max-width: 100%; font-size: 10px; letter-spacing: 0.12em; }
  .hero-stats { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .stat-item { min-width: 0; padding-right: 12px; }
  .stat-item + .stat-item { padding-left: 12px; }
  .stat-num { font-size: 28px; }
  .stat-label { font-size: 10px; letter-spacing: 0.1em; overflow-wrap: anywhere; }
  .section-inner { padding: 80px 24px; }
  .systems-grid, .process-grid { grid-template-columns: 1fr; }
  .testi-grid { grid-template-columns: 1fr; }
  .lead-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .specs-bar { flex-wrap: wrap; }
  .spec-item { flex: 1 1 45%; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 40px 24px; padding: 56px 24px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .footer-bottom-right { text-align: center; }
  .footer-credits { justify-content: center; flex-wrap: wrap; }
  .footer-legal-links { justify-content: center; }
}
@media (max-width: 560px) {
  .hero-left { padding-top: 42px; padding-bottom: 32px; }
  .hero-eyebrow { gap: 8px; margin-bottom: 16px; font-size: 9.5px; letter-spacing: 0.12em; }
  .hero-eyebrow::before { width: 16px; }
  .hero-h1 { font-size: clamp(40px, 11vw, 48px); }
  .hero-desc { font-size: 14px; line-height: 1.6; }
  .hero-stats { margin-top: 22px; padding-top: 14px; }
  .hero-actions a { width: 100%; padding-inline: 18px; text-align: center; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-brand { grid-column: auto; }
  .footer-bottom { padding-inline: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ── ANIMATIONS ── */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: none; }




/* ── SYSTEMS SECTION ── */
.systems-section {
  background: var(--black);
  border-top: 1px solid var(--border);
  padding: 80px 64px;
}
.systems-eyebrow { font-family: var(--mono); font-size: 13px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--grey-1); margin-bottom: 10px; }
.systems-intro { font-family: var(--sans); font-size: 13px; color: var(--grey-2); letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 56px; }
.systems-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--border);
}
.system-card {
  background: var(--dark);
  padding: 36px 32px;
  position: relative;
  transition: background 0.25s;
}
.system-card:hover { background: #131313; }
.system-number {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--grey-2);
  letter-spacing: 0.15em;
  margin-bottom: 20px;
}
.system-icon {
  font-size: 28px;
  margin-bottom: 16px;
  display: block;
}
.system-name {
  font-family: var(--sans);
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}
.system-tagline {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.system-desc {
  font-family: var(--sans);
  font-size: 13px;
  line-height: 1.65;
  color: var(--grey-1);
  margin-bottom: 20px;
}
.system-specs {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
}
.system-spec {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  color: var(--grey-2);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.system-spec::before {
  content: '—';
  color: var(--accent);
  flex-shrink: 0;
}
.system-partners {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.system-partner-tag {
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 2px;
}
.tag-aws { background: rgba(20,60,120,0.3); color: #7ea8e0; border: 1px solid rgba(20,60,120,0.5); }
.tag-alspec { background: rgba(0,120,90,0.3); color: #5cc9a7; border: 1px solid rgba(0,120,90,0.5); }
@media (max-width: 1100px) { .systems-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 720px) { .systems-grid { grid-template-columns: 1fr; } .systems-section { padding: 48px 24px; } }
/* ── GALLERY BADGES ── */
.gallery-badge {
  position: absolute;
  top: 12px; right: 12px;
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: 2px;
  pointer-events: none;
}
.badge-alspec {
  background: rgba(0,120,90,0.82);
  color: #fff;
}
.badge-aws {
  background: rgba(20,60,120,0.82);
  color: #fff;
}
/* ── PROJECT GALLERY ── */
.gallery-section { border-top: 1px solid var(--border); background: var(--black); }
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
}
.gallery-item {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--panel);
}
.gallery-item.wide {
  grid-column: span 2;
  aspect-ratio: 16/9;
}
.gallery-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  filter: grayscale(0.35);
  transition: transform 0.5s ease, filter 0.4s ease;
}
.gallery-item:hover img {
  transform: scale(1.04);
  filter: grayscale(0%) contrast(1.02);
}
.gallery-caption {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 20px 20px 16px;
  background: none;
  opacity: 0;
  transition: opacity 0.3s;
}
.gallery-item:hover .gallery-caption { opacity: 1; }
.gallery-caption-title {
  font-family: var(--sans); font-size: 13px; font-weight: 600; color: var(--white);
  letter-spacing: -0.01em; margin-bottom: 4px;
}
.gallery-caption-sub {
  font-family: var(--mono); font-size: 9px; color: var(--grey-1); letter-spacing: 0.1em;
}
.gallery-alspec-note {
  padding: 16px 64px;
  background: var(--black);
  border-top: 1px solid var(--border);
  display: flex; align-items: center; gap: 12px;
}
.gallery-alspec-note span {
  font-family: var(--mono); font-size: 10px; color: var(--grey-2);
  letter-spacing: 0.08em; line-height: 1.5;
}
@media (max-width: 900px) {
  .gallery-grid { grid-template-columns: 1fr; }
  .gallery-item.wide { grid-column: span 1; aspect-ratio: 4/3; }
  .gallery-alspec-note { padding: 16px 24px; }
}
/* ── PARTNERS STRIP ── */
.partners-strip {
  border-top: 1px solid var(--border);
  margin-top: 28px;
  padding-top: 22px;
}
.partners-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--grey-2);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.partners-eyebrow::before {
  content: '';
  width: 18px;
  height: 1px;
  background: var(--grey-2);
  display: inline-block;
  flex-shrink: 0;
}
.partners-logos {
  display: flex;
  gap: 20px;
  align-items: center;
  flex-wrap: wrap;
}
.partners-logo {
  width: auto;
  height: 32px;
  max-width: 128px;
  object-fit: contain;
  opacity: 0.68;
  filter: grayscale(1) brightness(1.2);
  transition: opacity 0.2s;
}
.partners-logo:hover { opacity: 1; }

/* ── PROJECTS PAGE ── */
.nav-links a.active { color: var(--white); }
.page-header {
  padding: 300px 64px 72px;
  border-bottom: 1px solid var(--border);
}
.page-eyebrow {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--grey-2); margin-bottom: 16px;
}
.page-title {
  font-family: var(--sans); font-size: clamp(40px, 5vw, 68px); font-weight: 600;
  letter-spacing: -0.03em; line-height: 1.05; margin-bottom: 20px;
}
.page-title span { color: var(--grey-1); font-weight: 300; }
.page-intro { font-size: 16px; color: var(--grey-1); line-height: 1.7; max-width: 720px; }
.filter-bar {
  padding: 28px 64px; display: flex; gap: 8px; align-items: center;
  border-bottom: 1px solid var(--border); background: rgba(22,22,22,0.96);
  backdrop-filter: blur(16px); position: sticky; top: 119px; z-index: 50;
}
.filter-btn {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase;
  padding: 9px 16px; border: 1px solid var(--border); background: transparent;
  color: var(--grey-1); cursor: pointer; transition: all 0.2s;
}
.filter-btn:hover, .filter-btn.active { background: var(--white); color: var(--black); border-color: var(--white); }
.filter-count { font-family: var(--mono); font-size: 10px; color: var(--grey-2); margin-left: auto; letter-spacing: 0.1em; }
.gallery-main { padding: 2px; background: var(--border); }
.gallery-masonry {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2px; background: var(--border);
}
.gallery-masonry .item-wide { grid-column: span 2; }
.gallery-card { position: relative; overflow: hidden; background: var(--panel); aspect-ratio: 16 / 10; }
.gallery-card.item-wide { aspect-ratio: 32 / 10; }
.gallery-card img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  transition: transform 0.5s ease, filter 0.4s ease; filter: grayscale(0.25);
}
.gallery-card:hover img { transform: scale(1.04); filter: grayscale(0) contrast(1.02); }
.gallery-attribution { padding: 20px 64px; background: var(--dark); border-top: 1px solid var(--border); }
.gallery-attribution p { font-family: var(--mono); font-size: 10px; color: var(--grey-2); letter-spacing: 0.08em; line-height: 1.6; }
@media (max-width: 900px) {
  .page-header { padding: 172px 24px 48px; }
  .filter-bar { top: 87px; padding: 20px 24px; flex-wrap: wrap; }
  .gallery-masonry { grid-template-columns: 1fr; }
  .gallery-masonry .item-wide { grid-column: span 1; }
  .gallery-card.item-wide { aspect-ratio: 16 / 10; }
  .gallery-attribution { padding: 16px 24px; }
}
@media (max-width: 560px) {
  .page-title { font-size: 40px; }
  .page-intro { font-size: 14px; }
  .filter-btn { flex: 1 1 calc(50% - 8px); }
  .filter-count { flex-basis: 100%; margin: 8px 0 0; }
}