/*
  Black Ledger Interactive, LLC
  Single-file stylesheet for a fast, responsive, dark-first static site.
  No external dependencies. Designed to be readable, printable, and accessible.
*/

:root {
  color-scheme: dark light;
  --bg: #0b0d10;
  --bg-elev: #11141a;
  --bg-soft: #0e1217;
  --text: #e7ecf4;
  --text-dim: #b2bccd;
  --text-soft: #8793a6;
  --line: rgba(231, 236, 244, 0.12);
  --line-strong: rgba(231, 236, 244, 0.22);
  --accent: #8fb6ff;
  --accent-2: #7fd1c9;
  --focus: #c2d5ff;
  --shadow: rgba(2, 6, 14, 0.6);
  --maxw: 1120px;
  --radius: 14px;
  --radius-sm: 10px;
  --gap: 1.25rem;
  --gap-lg: 2.5rem;
  --font-ui: ui-sans-serif, system-ui, -apple-system, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-ui);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  letter-spacing: 0.01em;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 36px 36px;
  background-position: center;
  opacity: 0.18;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  color: var(--accent);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--bg-elev);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  color: var(--text);
  z-index: 10;
}

.skip-link:focus {
  left: 0.75rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(11, 13, 16, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.95rem;
}

.logo img {
  width: 28px;
  height: 28px;
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.95rem;
}

.site-nav a {
  color: var(--text-dim);
  padding: 0.25rem 0.4rem;
  border-radius: 6px;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
  background: rgba(143, 182, 255, 0.12);
}

main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 3.5rem 1.5rem 4.5rem;
}

section {
  margin-top: var(--gap-lg);
  padding-top: var(--gap-lg);
  border-top: 1px solid var(--line);
}

section:first-of-type {
  border-top: none;
  padding-top: 0;
}

.hero {
  display: grid;
  gap: 2rem;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.1rem, 3.2vw, 3.4rem);
  margin: 0 0 0.75rem;
  line-height: 1.15;
}

.hero p {
  color: var(--text-dim);
  font-size: 1.05rem;
  margin: 0 0 1.5rem;
}

.hero-card {
  background: var(--bg-elev);
  border: 1px solid var(--line-strong);
  padding: 1.5rem;
  border-radius: var(--radius);
  box-shadow: 0 20px 50px var(--shadow);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-soft);
}

.badge span {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 12px rgba(127, 209, 201, 0.6);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.button.primary {
  background: linear-gradient(120deg, rgba(143, 182, 255, 0.9), rgba(127, 209, 201, 0.8));
  color: #0b0d10;
  box-shadow: 0 10px 30px rgba(111, 168, 255, 0.28);
}

.button.secondary {
  border-color: var(--line-strong);
  color: var(--text);
  background: transparent;
}

.button:hover {
  transform: translateY(-2px);
}

.button.secondary:hover {
  border-color: var(--accent);
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.section-header h2 {
  font-size: clamp(1.4rem, 2vw, 2rem);
  margin: 0 0 0.25rem;
}

.section-header p {
  color: var(--text-soft);
  max-width: 720px;
  margin: 0;
}

.grid {
  margin-top: 1.5rem;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  min-height: 100%;
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

.card p,
.card li {
  color: var(--text-dim);
}

.card ul {
  padding-left: 1.2rem;
  margin: 0;
}

.pillars ol {
  margin: 1.5rem 0 0;
  padding-left: 1.2rem;
  color: var(--text-dim);
}

.simulation-list {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.simulation-list li {
  background: var(--bg-soft);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  color: var(--text-dim);
}

.status-panel {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 1.5rem;
}

.status-panel .card {
  border-style: solid;
}

.meta {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-soft);
}

.contact-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 1.5rem;
}

.contact-card {
  background: var(--bg-elev);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 2.5rem 1.5rem;
  color: var(--text-soft);
  font-size: 0.9rem;
}

.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}

.muted-link {
  color: var(--text-soft);
}

/* Subtle fade-in on load, respects reduced motion */
.reveal {
  animation: fadeUp 0.8s ease both;
}

.reveal.delay-1 {
  animation-delay: 0.12s;
}

.reveal.delay-2 {
  animation-delay: 0.24s;
}

.reveal.delay-3 {
  animation-delay: 0.36s;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }

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

  .status-panel,
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav ul {
    gap: 0.5rem;
  }

  main {
    padding: 2.75rem 1.25rem 4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

@media print {
  body {
    background: #ffffff;
    color: #0b0d10;
  }

  body::before {
    display: none;
  }

  .site-header,
  .button,
  .footer {
    border: none;
    box-shadow: none;
  }

  a {
    color: #0b0d10;
    text-decoration: underline;
  }
}