/* ------------------------------
   Design Tokens
-------------------------------- */
:root {
  color-scheme: dark;

  /* Color */
  --color-bg: #060b14;
  --color-surface: #0e1726;
  --color-surface-soft: #121f34;
  --color-border: #263651;
  --color-text: #edf3ff;
  --color-muted: #a9b9d6;
  --color-accent: #7cd3ff;
  --color-accent-strong: #49b3f0;
  --color-link: #8ccfff;
  --color-focus: #ffd56f;

  /* Typography */
  --font-heading: "Space Grotesk", "Avenir Next", "Segoe UI", sans-serif;
  --font-body: "Manrope", "Avenir Next", "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;

  /* Sizing + spacing */
  --container-max: 72rem;
  --radius-sm: 0.5rem;
  --radius-md: 0.875rem;
  --radius-lg: 1.25rem;

  --space-1: 0.375rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* Layout + motion */
  --shadow-soft: 0 20px 45px rgba(2, 10, 24, 0.45);
  --duration-fast: 120ms;
  --duration-med: 220ms;
  --ease-standard: cubic-bezier(0.2, 0.7, 0.2, 1);
}

@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;
    --color-bg: #eef3fb;
    --color-surface: #ffffff;
    --color-surface-soft: #f5f8ff;
    --color-border: #c6d2e8;
    --color-text: #0f1728;
    --color-muted: #3e4f6a;
    --color-accent: #0f7bc2;
    --color-accent-strong: #005f99;
    --color-link: #005c91;
    --color-focus: #7d4f00;
    --shadow-soft: 0 20px 40px rgba(30, 57, 95, 0.14);
  }
}

@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;
  }
}

/* ------------------------------
   Base
-------------------------------- */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  background: var(--color-bg);
  color: var(--color-text);
}

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

a {
  color: var(--color-link);
  text-decoration-thickness: 0.09em;
  text-underline-offset: 0.18em;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  line-height: 1.18;
  letter-spacing: -0.02em;
  font-family: var(--font-heading);
}

p {
  margin: 0;
}

ul {
  margin: 0;
  padding: 0;
}

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: 0.2rem;
}

.page-backdrop {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(circle at 10% 15%, rgba(80, 125, 183, 0.28), transparent 35%),
    radial-gradient(circle at 85% 20%, rgba(87, 178, 229, 0.2), transparent 30%),
    linear-gradient(180deg, rgba(4, 8, 15, 0.92), rgba(4, 8, 15, 1));
}

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-4);
}

.skip-link:focus-visible {
  left: var(--space-4);
  top: var(--space-4);
}

/* ------------------------------
   Header + Footer
-------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid color-mix(in oklab, var(--color-border) 65%, transparent);
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(12px);
}

.site-nav {
  min-height: 4.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
}

.brand img {
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 0.4rem;
}

.brand-wordmark {
  height: 1.35rem;
  width: auto;
}

.nav-links {
  list-style: none;
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  color: var(--color-text);
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
}

.nav-links a:hover {
  background: color-mix(in oklab, var(--color-surface) 75%, transparent);
}

.site-footer {
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-16);
  padding: var(--space-8) 0 var(--space-10);
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.footer-links {
  display: inline-flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer-mark {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 0.35rem;
}

/* ------------------------------
   Reusable sections
-------------------------------- */
main {
  padding-top: var(--space-10);
}

.section {
  margin-top: var(--space-12);
}

.section-title {
  font-size: clamp(1.55rem, 2.6vw, 2.05rem);
}

.section-intro {
  margin-top: var(--space-3);
  max-width: 42rem;
  color: var(--color-muted);
}

.panel {
  margin-top: var(--space-6);
  background: color-mix(in oklab, var(--color-surface) 92%, transparent);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}

.card h3 {
  font-size: 1.08rem;
}

.card p {
  margin-top: var(--space-3);
  color: var(--color-muted);
}

.columns-3 {
  margin-top: var(--space-6);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
}

.column {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  padding: var(--space-5);
}

.column h3 {
  font-size: 1.02rem;
}

.column ul {
  margin-top: var(--space-3);
  list-style: disc;
  padding-left: 1.1rem;
  color: var(--color-muted);
}

.offerings {
  margin-top: var(--space-6);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
}

.offering {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: linear-gradient(
    180deg,
    color-mix(in oklab, var(--color-surface-soft) 88%, transparent),
    color-mix(in oklab, var(--color-surface) 93%, transparent)
  );
  padding: var(--space-5);
}

.offering .label {
  display: inline-block;
  padding: 0.13rem 0.55rem;
  border-radius: 999px;
  font-size: 0.79rem;
  font-family: var(--font-mono);
  color: var(--color-accent);
  border: 1px solid color-mix(in oklab, var(--color-accent) 35%, var(--color-border));
}

.offering h3 {
  margin-top: var(--space-3);
}

.offering p {
  margin-top: var(--space-3);
  color: var(--color-muted);
}

.outcomes-list {
  margin-top: var(--space-6);
  list-style: none;
  display: grid;
  gap: var(--space-3);
}

.outcomes-list li {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: color-mix(in oklab, var(--color-surface) 95%, transparent);
  padding: var(--space-3) var(--space-4);
}

/* ------------------------------
   Hero + CTA
-------------------------------- */
.hero {
  margin-top: var(--space-6);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-6);
  align-items: stretch;
}

.hero-copy {
  padding: var(--space-8);
}

.kicker {
  display: inline-flex;
  align-items: center;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  font-family: var(--font-mono);
}

.hero-copy h1 {
  margin-top: var(--space-3);
  font-size: clamp(1.95rem, 4vw, 3.1rem);
}

.hero-copy p {
  margin-top: var(--space-4);
  max-width: 36ch;
  color: var(--color-muted);
}

.cta-row {
  margin-top: var(--space-6);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  padding: 0.64rem 1rem;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    color var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard);
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-strong));
  color: #00101c;
}

.button-primary:hover {
  color: #00101c;
}

.button-secondary {
  border-color: var(--color-border);
  color: var(--color-text);
  background: color-mix(in oklab, var(--color-surface) 88%, transparent);
}

.button-secondary:hover {
  background: color-mix(in oklab, var(--color-surface-soft) 88%, transparent);
}

.hero-note {
  margin-top: var(--space-4);
  font-size: 0.92rem;
  color: var(--color-muted);
}

.constellation-panel {
  position: relative;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 18rem;
  background: radial-gradient(circle at 50% 40%, rgba(82, 143, 213, 0.16), rgba(7, 13, 24, 0.95));
}

.constellation-canvas {
  width: 100%;
  height: 100%;
  min-height: 18rem;
  display: none;
}

.constellation-fallback {
  position: absolute;
  inset: 0;
}

.constellation-fallback img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.8;
}

.constellation-ready .constellation-canvas {
  display: block;
}

.constellation-ready .constellation-fallback {
  display: none;
}

/* ------------------------------
   Content pages
-------------------------------- */
.content-page {
  padding-top: var(--space-8);
}

.page-hero {
  max-width: 52rem;
}

.page-hero h1 {
  font-size: clamp(1.9rem, 3.7vw, 2.8rem);
}

.page-hero p {
  margin-top: var(--space-4);
  color: var(--color-muted);
  max-width: 58ch;
}

.content-stack {
  margin-top: var(--space-8);
  display: grid;
  gap: var(--space-4);
}

.content-block {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  padding: var(--space-6);
}

.content-block h2 {
  font-size: 1.25rem;
}

.content-block p,
.content-block li {
  margin-top: var(--space-3);
  color: var(--color-muted);
}

.content-block ul {
  list-style: disc;
  padding-left: 1.2rem;
}

.meta-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
  padding: var(--space-2) var(--space-3);
  border-radius: 999px;
  border: 1px solid var(--color-border);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

/* ------------------------------
   Breakpoints
-------------------------------- */
@media (max-width: 65rem) {
  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .columns-3,
  .offerings {
    grid-template-columns: 1fr;
  }

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

  .hero-copy {
    padding: var(--space-6);
  }
}

@media (max-width: 40rem) {
  .container {
    width: min(100% - 1.5rem, var(--container-max));
  }

  .site-nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-grid {
    align-items: flex-start;
    flex-direction: column;
  }

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