/* Stack & Spoke — Terminal Design System
   GitHub-dark technical: near-black / phosphor teal / slate grid
   Typography: DM Sans (body/headings) — monospace code accents — self-hosted WOFF2
   Note: using DM Sans for the clean technical look; Playfair Display for occasional serif contrast */

@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 300 600;
  font-display: swap;
  src: url('/assets/fonts/dm-sans.woff2') format('woff2');
}

@font-face {
  font-family: 'Playfair Display';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('/assets/fonts/playfair-display.woff2') format('woff2');
}

:root {
  --ss-ground:      #0d1117;
  --ss-surface:     #131920;
  --ss-card:        #161d27;
  --ss-card-hover:  #1c2533;
  --ss-border:      #21303f;
  --ss-border-dim:  #17222e;

  --ss-teal:        #1abc9c;
  --ss-teal-light:  #2ee8be;
  --ss-teal-dim:    #0e8a72;
  --ss-teal-glow:   rgba(26, 188, 156, 0.12);
  --ss-teal-faint:  rgba(26, 188, 156, 0.06);

  --ss-blue:        #58a6ff;
  --ss-blue-dim:    #1f4a7a;

  --ss-text:        #e6edf3;
  --ss-text-dim:    #8ba3bb;
  --ss-muted:       #4d6880;
  --ss-dim:         #2e4055;

  --font-display:   'DM Sans', system-ui, -apple-system, sans-serif;
  --font-body:      'DM Sans', system-ui, -apple-system, sans-serif;
  --font-mono:      'SFMono-Regular', 'Cascadia Code', 'Fira Code', Consolas, monospace;

  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  14px;

  --ease:   cubic-bezier(0.16, 1, 0.3, 1);
  --dur:    0.22s;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-body);
  background: var(--ss-ground);
  color: var(--ss-text);
  line-height: 1.7;
}
img { display: block; max-width: 100%; }
a { color: var(--ss-teal); text-decoration: none; transition: color var(--dur); }
a:hover { color: var(--ss-teal-light); }

.skip-link {
  position: absolute; top: -100%; left: 0; z-index: 9999;
  background: var(--ss-teal); color: var(--ss-ground); padding: 0.5rem 1rem;
}
.skip-link:focus { top: 0; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

/* ── Code badge style ── */
.code-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem; letter-spacing: 0.02em;
  background: var(--ss-card);
  border: 1px solid var(--ss-border);
  border-radius: var(--radius-sm);
  padding: 0.2em 0.6em;
  color: var(--ss-teal);
}

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-body); font-weight: 500; font-size: 0.875rem;
  letter-spacing: 0.02em;
  padding: 0.8rem 1.9rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  transition: background var(--dur), color var(--dur), border-color var(--dur), box-shadow var(--dur), transform var(--dur);
  cursor: pointer; white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--ss-teal);
  color: var(--ss-ground);
  border-color: var(--ss-teal);
  font-weight: 600;
}
.btn-primary:hover {
  background: var(--ss-teal-light);
  border-color: var(--ss-teal-light);
  color: var(--ss-ground);
  box-shadow: 0 0 20px var(--ss-teal-glow);
}

.btn-outline {
  background: transparent;
  color: var(--ss-text-dim);
  border-color: var(--ss-border);
}
.btn-outline:hover {
  border-color: var(--ss-teal-dim);
  color: var(--ss-text);
}

/* ── Header ── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(13, 17, 23, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--ss-border);
}
.site-header .container {
  display: flex; align-items: center; gap: 2rem;
  padding-top: 1rem; padding-bottom: 1rem;
}

.site-logo {
  display: flex; align-items: center; gap: 0.75rem;
  text-decoration: none; flex-shrink: 0; margin-right: auto;
  color: var(--ss-text);
}
.site-logo:hover { color: var(--ss-teal); }
.logo-icon {
  width: 2rem; height: 2rem;
  background: var(--ss-teal-faint);
  border: 1px solid var(--ss-teal-dim);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.logo-icon svg { width: 1rem; height: 1rem; color: var(--ss-teal); }
.logo-text {
  display: flex; flex-direction: column; line-height: 1.1;
}
.logo-main {
  font-size: 0.95rem; font-weight: 600;
  letter-spacing: -0.01em;
}
.logo-sub {
  font-family: var(--font-mono);
  font-size: 0.58rem; color: var(--ss-muted);
  letter-spacing: 0.08em;
}

.site-nav { display: flex; align-items: center; gap: 1.75rem; }
.site-nav a {
  font-size: 0.82rem; font-weight: 500;
  color: var(--ss-text-dim);
  transition: color var(--dur);
}
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--ss-text); }

.nav-cta {
  font-size: 0.82rem; font-weight: 600;
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--ss-teal-dim);
  border-radius: var(--radius-sm); color: var(--ss-teal);
  transition: background var(--dur), border-color var(--dur), color var(--dur), box-shadow var(--dur);
  flex-shrink: 0;
}
.nav-cta:hover {
  background: var(--ss-teal);
  border-color: var(--ss-teal);
  color: var(--ss-ground);
  box-shadow: 0 0 16px var(--ss-teal-glow);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-shrink: 0;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ss-text);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}
.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-open .nav-toggle span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Hero ── */
.hero {
  position: relative; overflow: hidden;
  padding: 8rem 0 7rem;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 70% at 100% 20%, rgba(26, 188, 156, 0.08) 0%, transparent 55%),
    radial-gradient(ellipse 40% 50% at 0% 80%, rgba(26, 188, 156, 0.04) 0%, transparent 50%);
  pointer-events: none;
}

/* Grid overlay */
.hero::after {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--ss-border-dim) 1px, transparent 1px),
    linear-gradient(90deg, var(--ss-border-dim) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.35;
  pointer-events: none;
  mask-image: radial-gradient(ellipse at 50% 0%, rgba(0,0,0,0.6) 0%, transparent 70%);
}

.hero .container { position: relative; z-index: 1; }

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 0.5rem;
  margin-bottom: 2rem;
}
.hero-eyebrow-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem; letter-spacing: 0.04em;
  background: rgba(26, 188, 156, 0.08);
  border: 1px solid var(--ss-teal-dim);
  border-radius: var(--radius-sm);
  padding: 0.25em 0.75em;
  color: var(--ss-teal);
}
.hero-eyebrow-divider {
  width: 1px; height: 1rem; background: var(--ss-border);
}
.hero-eyebrow-sub {
  font-family: var(--font-mono);
  font-size: 0.7rem; color: var(--ss-muted); letter-spacing: 0.04em;
}

.hero-h1 {
  font-size: clamp(2.6rem, 5.5vw, 5rem);
  font-weight: 700; line-height: 1.06;
  letter-spacing: -0.025em;
  color: var(--ss-text);
  max-width: 16ch;
  white-space: pre-line;
}
.hero-h1 .accent { color: var(--ss-teal); }

.hero-tagline {
  margin-top: 1.75rem;
  font-size: 1rem; color: var(--ss-text-dim);
  max-width: 52ch; line-height: 1.7;
}

.hero-actions {
  display: flex; align-items: center; flex-wrap: wrap; gap: 1rem;
  margin-top: 2.5rem;
}

/* Products preview */
.hero-products {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--ss-border);
  border: 1px solid var(--ss-border);
  border-radius: var(--radius-md);
  margin-top: 5rem;
  overflow: hidden;
}
.hero-product {
  background: var(--ss-card);
  padding: 2rem;
  transition: background var(--dur);
}
.hero-product:hover { background: var(--ss-card-hover); }
.product-namespace {
  font-family: var(--font-mono);
  font-size: 0.68rem; color: var(--ss-teal-dim);
  letter-spacing: 0.04em; margin-bottom: 0.5rem;
}
.product-name {
  font-size: 1.2rem; font-weight: 700;
  color: var(--ss-text); margin-bottom: 0.3rem;
  letter-spacing: -0.01em;
}
.product-tagline {
  font-family: var(--font-mono);
  font-size: 0.72rem; color: var(--ss-teal);
  margin-bottom: 0.75rem;
}
.product-body { font-size: 0.85rem; color: var(--ss-text-dim); line-height: 1.7; }

/* Stats bar */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--ss-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: 2rem;
}
.stat-item {
  padding: 1.5rem 2rem;
  border-right: 1px solid var(--ss-border);
  background: var(--ss-card);
}
.stat-item:last-child { border-right: none; }
.stat-val {
  font-size: 1.8rem; font-weight: 700;
  color: var(--ss-teal); line-height: 1;
  margin-bottom: 0.25rem;
}
.stat-label { font-size: 0.78rem; color: var(--ss-text-dim); font-weight: 500; }
.stat-note {
  font-family: var(--font-mono);
  font-size: 0.65rem; color: var(--ss-muted); margin-top: 0.15rem;
}

/* ── Page Hero ── */
.page-hero {
  padding: 5rem 0 4rem;
  border-bottom: 1px solid var(--ss-border);
  position: relative; overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 50% 100% at 100% 50%, rgba(26, 188, 156, 0.06) 0%, transparent 55%);
  pointer-events: none;
}
.page-hero .container { position: relative; z-index: 1; }

.breadcrumb {
  display: flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem; color: var(--ss-muted);
  margin-bottom: 1.5rem;
}
.breadcrumb a { color: var(--ss-muted); }
.breadcrumb a:hover { color: var(--ss-teal); }
.breadcrumb-sep { color: var(--ss-border); }

.page-h1 {
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 700; line-height: 1.1;
  letter-spacing: -0.02em; color: var(--ss-text);
  max-width: 22ch;
}
.page-intro {
  margin-top: 1.25rem;
  font-size: 1rem; color: var(--ss-text-dim);
  max-width: 60ch; line-height: 1.75;
}

/* ── Page Content ── */
.page-content { padding: 5rem 0; }
.page-sections { max-width: 72ch; }

.page-section { margin-bottom: 3.5rem; }
.page-section:last-child { margin-bottom: 0; }

.page-section h2 {
  font-size: 1.2rem; font-weight: 600;
  color: var(--ss-text); margin-bottom: 0.85rem;
  letter-spacing: -0.01em;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--ss-border-dim);
  display: flex; align-items: center; gap: 0.75rem;
}
.page-section h2::before {
  content: '';
  display: inline-block;
  width: 0.5rem; height: 0.5rem;
  background: var(--ss-teal);
  border-radius: 50%;
  flex-shrink: 0;
}
.page-section p { color: var(--ss-text-dim); line-height: 1.8; font-size: 0.94rem; }
.page-section a { color: var(--ss-teal); }
.page-section a:hover { color: var(--ss-teal-light); }

.page-steps {
  list-style: none; margin-top: 1rem;
  display: flex; flex-direction: column; gap: 0.5rem;
}
.page-steps li {
  display: flex; align-items: flex-start; gap: 0.75rem;
  font-size: 0.9rem; color: var(--ss-text-dim);
  font-family: var(--font-mono);
}
.page-steps li::before {
  content: '→';
  color: var(--ss-teal); flex-shrink: 0; margin-top: 0.05em;
}

.inline-cta {
  margin-top: 3.5rem; padding: 2.25rem;
  background: var(--ss-card);
  border: 1px solid var(--ss-border);
  border-left: 2px solid var(--ss-teal);
  border-radius: var(--radius-md);
}
.inline-cta h3 {
  font-size: 1.05rem; font-weight: 600; color: var(--ss-text);
  margin-bottom: 0.5rem;
}
.inline-cta p { font-size: 0.88rem; color: var(--ss-text-dim); margin-bottom: 1.25rem; }

/* ── Contact ── */
.contact-section { padding: 5rem 0; }
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.contact-form-label {
  font-family: var(--font-mono);
  font-size: 0.7rem; letter-spacing: 0.06em;
  color: var(--ss-teal); font-weight: 500; margin-bottom: 1.5rem;
}

.contact-form { display: flex; flex-direction: column; gap: 1.25rem; }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label {
  font-family: var(--font-mono);
  font-size: 0.72rem; letter-spacing: 0.06em;
  color: var(--ss-muted); font-weight: 500;
}
.form-group input,
.form-group textarea {
  background: var(--ss-card);
  border: 1px solid var(--ss-border);
  border-radius: var(--radius-sm);
  color: var(--ss-text);
  font-family: var(--font-body); font-size: 0.9rem;
  padding: 0.75rem 1rem;
  transition: border-color var(--dur), box-shadow var(--dur);
  width: 100%;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--ss-muted); }
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--ss-teal-dim);
  box-shadow: 0 0 0 3px rgba(26, 188, 156, 0.08);
}

.form-footer { display: flex; align-items: center; gap: 1.25rem; flex-wrap: wrap; }
.form-status { font-size: 0.82rem; color: var(--ss-text-dim); font-family: var(--font-mono); }
.form-status--ok { color: var(--ss-teal); }
.form-status--error { color: #f87171; }

.contact-info-col { display: flex; flex-direction: column; gap: 2.5rem; }
.contact-info-block h2 {
  font-size: 0.88rem; font-weight: 600;
  color: var(--ss-text); margin-bottom: 0.5rem;
  font-family: var(--font-mono);
}
.contact-info-block p { font-size: 0.875rem; color: var(--ss-text-dim); line-height: 1.8; }
.contact-info-block a { color: var(--ss-teal); }

/* ── Footer ── */
.site-footer {
  background: var(--ss-surface);
  border-top: 1px solid var(--ss-border);
  padding: 4rem 0 2.5rem;
}
.footer-cols {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 3rem;
}
.footer-logo {
  display: flex; align-items: center; gap: 0.6rem;
  font-size: 0.92rem; font-weight: 600;
  color: var(--ss-text); margin-bottom: 0.75rem;
}
.footer-logo-icon {
  width: 1.5rem; height: 1.5rem;
  background: var(--ss-teal-faint);
  border: 1px solid var(--ss-teal-dim);
  border-radius: 3px;
  display: flex; align-items: center; justify-content: center;
}
.footer-logo-icon svg { width: 0.75rem; height: 0.75rem; color: var(--ss-teal); }
.footer-tagline { font-size: 0.83rem; color: var(--ss-muted); line-height: 1.72; }

.footer-col-label {
  font-family: var(--font-mono);
  font-size: 0.65rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ss-muted); font-weight: 500; margin-bottom: 0.85rem;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.footer-col ul a { font-size: 0.83rem; color: var(--ss-text-dim); }
.footer-col ul a:hover { color: var(--ss-text); }

.footer-bottom {
  border-top: 1px solid var(--ss-border);
  padding-top: 2rem;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 1rem;
}
.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.72rem; color: var(--ss-muted);
}

.cf-turnstile { margin: 0.25rem 0; }

/* ── Responsive ── */
@media (max-width: 900px) {
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .stats-bar .stat-item:nth-child(2) { border-right: none; }
  .hero-products { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: 1fr; gap: 2.5rem; }
  .contact-layout { grid-template-columns: 1fr; gap: 3rem; }
}
@media (max-width: 600px) {
  .site-nav { display: none; }
  .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .nav-open .site-nav {
    display: flex;
    flex-direction: column;
    position: absolute;
    left: 0; right: 0; top: 100%;
    background: var(--ss-surface);
    padding: 0.5rem 1.5rem 1rem;
    border-bottom: 1px solid var(--ss-border);
    box-shadow: 0 12px 32px rgba(0,0,0,0.6);
    z-index: 99;
    gap: 0;
  }
  .nav-open .site-nav a {
    padding: 0.7rem 0;
    border-bottom: 1px solid var(--ss-border-dim);
    font-size: 0.9rem;
  }
  .nav-open .site-nav a:last-child { border-bottom: none; }
  .stats-bar { grid-template-columns: 1fr; }
  .stats-bar .stat-item { border-right: none; border-bottom: 1px solid var(--ss-border); }
  .hero { padding: 5rem 0 4rem; }
}