/*
  Binary World Infra — Signal Glass (light)
*/

.bw-infra-body {
  --bw-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --bw-font-display: "Syne", "Avenir Next", "Segoe UI", sans-serif;
  --bw-font-body: "Manrope", "Avenir Next", "Segoe UI", sans-serif;
  --bw-bg: #f7f6f2;
  --bw-surface: rgba(255, 255, 255, 0.8);
  --bw-surface-strong: #ffffff;
  --bw-border: rgba(18, 18, 16, 0.08);
  --bw-text: #151513;
  --bw-muted: #6b6962;
  --bw-accent: #0f766e;
  --bw-accent-soft: rgba(15, 118, 110, 0.12);
  --bw-shadow: 0 18px 48px rgba(18, 18, 16, 0.08);
  --bw-signal: linear-gradient(90deg, #0f766e 0%, #14b8a6 45%, #f59e0b 100%);
  --bw-diagram-fill: #ffffff;
  --bw-diagram-stroke: rgba(15, 118, 110, 0.28);
  --bw-diagram-title: #151513;
  --bw-diagram-sub: #6b6962;
  --bw-diagram-tag: #0f766e;
  --bw-diagram-line: #94a3b8;

  margin: 0;
  padding: 64px 0 0;
  min-height: 100vh;
  color: var(--bw-text);
  font-family: var(--bw-font-body);
  background:
    radial-gradient(1100px 480px at 14% -8%, rgba(15, 118, 110, 0.1), transparent 55%),
    radial-gradient(800px 400px at 92% 4%, rgba(245, 158, 11, 0.08), transparent 50%),
    var(--bw-bg);
  line-height: 1.65;
}

.bw-infra {
  display: block;
}

.bw-infra-hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.bw-infra-hero-plane {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(180deg, rgba(247, 246, 242, 0.2) 0%, rgba(247, 246, 242, 0.96) 90%),
    radial-gradient(ellipse 70% 55% at 50% 0%, rgba(20, 184, 166, 0.14), transparent 65%);
}

.bw-infra-hero-plane::before {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 2px;
  background: var(--bw-signal);
  opacity: 0.85;
}

.bw-infra-hero-inner {
  position: relative;
  z-index: 1;
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 3.5rem 0 2.75rem;
  text-align: center;
  animation: bw-infra-rise 0.65s var(--bw-ease) both;
}

.bw-infra-brand {
  margin: 0 0 0.55rem;
  color: var(--bw-accent);
  font-family: var(--bw-font-display);
  font-size: clamp(1.9rem, 4.5vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 1;
}

.bw-infra-hero h1 {
  margin: 0;
  font-family: var(--bw-font-display);
  font-size: clamp(1.45rem, 3vw, 1.9rem);
  font-weight: 700;
  letter-spacing: -0.04em;
}

.bw-infra-lead {
  margin: 0.85rem auto 0;
  max-width: 40rem;
  color: var(--bw-muted);
  font-size: 1.02rem;
  font-weight: 500;
}

.bw-infra-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1.35rem;
}

.bw-infra-badges span {
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--bw-border);
  border-radius: 999px;
  background: var(--bw-surface);
  color: var(--bw-accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  backdrop-filter: blur(10px);
}

.bw-infra-flow {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.45rem;
  margin-top: 1.35rem;
}

.bw-infra-flow-step {
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--bw-border);
  border-radius: 999px;
  background: var(--bw-surface-strong);
  color: var(--bw-text);
  font-size: 0.82rem;
  font-weight: 700;
  box-shadow: var(--bw-shadow);
}

.bw-infra-flow-arrow {
  color: var(--bw-muted);
  font-weight: 800;
}

.bw-infra-hint {
  margin: 0.9rem 0 0;
  color: var(--bw-muted);
  font-size: 0.92rem;
  font-weight: 500;
}

.bw-infra-section {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2.75rem 0 1rem;
}

.bw-infra-section-head {
  margin-bottom: 1.25rem;
}

.bw-infra-section-head h2 {
  margin: 0;
  font-family: var(--bw-font-display);
  font-size: clamp(1.4rem, 2.8vw, 1.8rem);
  font-weight: 800;
  letter-spacing: -0.04em;
}

.bw-infra-section-head p {
  margin: 0.4rem 0 0;
  color: var(--bw-muted);
  font-size: 0.96rem;
  font-weight: 500;
}

.bw-infra-diagram-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding: 1rem;
  border: 1px solid var(--bw-border);
  border-radius: 1.2rem;
  background: var(--bw-surface);
  box-shadow: var(--bw-shadow);
  backdrop-filter: blur(14px);
}

.bw-infra-diagram {
  display: block;
  width: 100%;
  min-width: 720px;
  height: auto;
}

.bw-infra-box {
  fill: var(--bw-diagram-fill);
  stroke: var(--bw-diagram-stroke);
  stroke-width: 1.4;
  rx: 14;
}

.bw-infra-title {
  fill: var(--bw-diagram-title);
  font: 700 16px var(--bw-font-body);
}

.bw-infra-sub {
  fill: var(--bw-diagram-sub);
  font: 500 13px var(--bw-font-body);
}

.bw-infra-tag {
  fill: var(--bw-diagram-tag);
  font: 700 12px var(--bw-font-body);
}

.bw-infra-line {
  stroke: var(--bw-diagram-line);
  stroke-width: 1.8;
  marker-end: url(#bwInfraArrow);
}

.bw-infra-arrow-head {
  fill: var(--bw-diagram-line);
}

.bw-infra-note {
  margin: 1rem 0 0;
  text-align: center;
  color: var(--bw-muted);
  font-size: 0.92rem;
  font-weight: 500;
}

.bw-infra-services {
  padding-bottom: 3rem;
}

.bw-infra-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}

.bw-infra-card {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.15rem 1.1rem 1.15rem;
  border: 1px solid var(--bw-border);
  border-radius: 1.1rem;
  background: var(--bw-surface);
  box-shadow: var(--bw-shadow);
  backdrop-filter: blur(14px);
  transition:
    transform 0.28s var(--bw-ease),
    border-color 0.28s var(--bw-ease),
    box-shadow 0.28s var(--bw-ease);
}

.bw-infra-card:hover {
  transform: translateY(-3px);
  border-color: rgba(15, 118, 110, 0.28);
  box-shadow: 0 22px 44px rgba(18, 18, 16, 0.1);
}

.bw-infra-card-accent {
  border-color: rgba(15, 118, 110, 0.22);
  background: linear-gradient(180deg, rgba(15, 118, 110, 0.06), var(--bw-surface));
}

.bw-infra-card-kicker {
  color: var(--bw-accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.bw-infra-card h3 {
  margin: 0;
  font-family: var(--bw-font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.bw-infra-card ul {
  margin: 0.35rem 0 0.75rem;
  padding-left: 1.1rem;
  color: var(--bw-muted);
  font-size: 0.9rem;
  font-weight: 500;
}

.bw-infra-card li {
  margin: 0.2rem 0;
}

.bw-infra-link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.5rem;
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  background: var(--bw-accent);
  color: #fff;
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
  transition:
    transform 0.25s var(--bw-ease),
    background-color 0.25s var(--bw-ease);
}

.bw-infra-link:hover {
  transform: translateY(-1px);
  background: #0d9488;
}

@keyframes bw-infra-rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .bw-infra-hero-inner,
  .bw-infra-card,
  .bw-infra-link {
    animation: none !important;
    transition: none !important;
  }
}

@media (max-width: 900px) {
  .bw-infra-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .bw-infra-hero-inner {
    width: min(100% - 1.25rem, 1120px);
    padding: 2.4rem 0 2rem;
  }

  .bw-infra-lead {
    font-size: 0.95rem;
  }

  .bw-infra-flow-arrow {
    display: none;
  }

  .bw-infra-flow {
    gap: 0.4rem;
  }

  .bw-infra-section {
    width: min(100% - 1.25rem, 1120px);
    padding-top: 2.2rem;
  }

  .bw-infra-grid {
    grid-template-columns: 1fr;
  }

  .bw-infra-diagram-wrap {
    padding: 0.75rem;
  }
}