/* =========================================================
   O11yFleet — shared styles
   Dark-first, single accent, geometric sans + mono
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Geist:wght@300;400;500;600;700&family=Geist+Mono:wght@400;500;600&display=swap');

:root {
  /* Dark (default) */
  --bg: #08090b;
  --bg-elev: #0c0e11;
  --bg-elev-2: #11141a;
  --bg-soft: #0a0c10;
  --surface: #0f1217;
  --surface-2: #14181f;
  --line: #1c2129;
  --line-2: #262c36;
  --line-strong: #333a46;
  --fg: #e8eaef;
  --fg-2: #b6bcc7;
  --fg-3: #7d8593;
  --fg-4: #545c68;
  --fg-5: #3a414c;

  /* Single accent — used only for CTAs, focus, live data */
  --accent: oklch(0.78 0.17 152);
  --accent-2: oklch(0.72 0.18 152);
  --accent-soft: oklch(0.78 0.17 152 / 0.12);
  --accent-line: oklch(0.78 0.17 152 / 0.32);
  --accent-fg: #06120c;

  /* Status — used sparingly, only on data viz */
  --ok: oklch(0.78 0.17 152);
  --warn: oklch(0.82 0.13 78);
  --err: oklch(0.70 0.18 24);
  --info: oklch(0.72 0.10 230);

  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 18px;

  --maxw: 1200px;
  --gap: 24px;

  --font-sans: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "Geist Mono", ui-monospace, "JetBrains Mono", "Fira Code", Menlo, monospace;

  --shadow-sm: 0 1px 0 rgba(255,255,255,0.02), 0 1px 2px rgba(0,0,0,0.4);
  --shadow: 0 1px 0 rgba(255,255,255,0.02), 0 8px 24px -8px rgba(0,0,0,0.6);
  --shadow-lg: 0 1px 0 rgba(255,255,255,0.04), 0 24px 48px -16px rgba(0,0,0,0.7);
}

[data-theme="light"] {
  --bg: #fbfbfa;
  --bg-elev: #ffffff;
  --bg-elev-2: #ffffff;
  --bg-soft: #f6f6f4;
  --surface: #ffffff;
  --surface-2: #f7f7f5;
  --line: #ececea;
  --line-2: #e0e0dd;
  --line-strong: #c8c8c4;
  --fg: #0c0d10;
  --fg-2: #2c2f36;
  --fg-3: #5b6271;
  --fg-4: #8a909c;
  --fg-5: #b3b8c1;

  --accent: oklch(0.62 0.16 152);
  --accent-2: oklch(0.55 0.17 152);
  --accent-soft: oklch(0.62 0.16 152 / 0.10);
  --accent-line: oklch(0.62 0.16 152 / 0.30);
  --accent-fg: #ffffff;

  --shadow-sm: 0 1px 1px rgba(15, 20, 30, 0.04);
  --shadow: 0 4px 14px -6px rgba(15, 20, 30, 0.10), 0 1px 2px rgba(15,20,30,0.05);
  --shadow-lg: 0 24px 48px -20px rgba(15, 20, 30, 0.18), 0 2px 4px rgba(15,20,30,0.05);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "cv11";
}
body {
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

::selection { background: var(--accent-soft); color: var(--fg); }

/* Subtle grain on dark mode background */
body::before {
  content: "";
  position: fixed; inset: 0;
  background:
    radial-gradient(1200px 600px at 80% -10%, oklch(0.78 0.17 152 / 0.04), transparent 60%),
    radial-gradient(800px 500px at -10% 0%, oklch(0.7 0.05 230 / 0.03), transparent 60%);
  pointer-events: none;
  z-index: 0;
}
[data-theme="light"] body::before {
  background:
    radial-gradient(1200px 600px at 80% -10%, oklch(0.62 0.16 152 / 0.04), transparent 60%);
}

/* ---------- Type ---------- */
h1, h2, h3, h4, h5 {
  margin: 0;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--fg);
  text-wrap: balance;
}
h1 { font-size: clamp(40px, 5.5vw, 64px); line-height: 1.04; letter-spacing: -0.035em; font-weight: 500; }
h2 { font-size: clamp(28px, 3.4vw, 44px); line-height: 1.08; letter-spacing: -0.028em; }
h3 { font-size: clamp(20px, 1.8vw, 24px); line-height: 1.2; letter-spacing: -0.018em; }
h4 { font-size: 16px; line-height: 1.3; letter-spacing: -0.01em; }
p { margin: 0; color: var(--fg-2); text-wrap: pretty; }

.mono { font-family: var(--font-mono); font-feature-settings: "zero", "ss02"; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.eyebrow::before {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.lede { font-size: clamp(16px, 1.4vw, 19px); color: var(--fg-2); line-height: 1.55; max-width: 64ch; }

.kbd {
  font-family: var(--font-mono); font-size: 11px;
  padding: 2px 6px; border-radius: 4px;
  background: var(--surface-2); border: 1px solid var(--line);
  color: var(--fg-2);
}

/* ---------- Layout ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; position: relative; }
.section { padding: 96px 0; position: relative; }
.section-tight { padding: 64px 0; }
@media (max-width: 720px) {
  .section { padding: 64px 0; }
  .section-tight { padding: 48px 0; }
}

.divider {
  height: 1px; background: var(--line);
  width: 100%;
}

/* ---------- Buttons ---------- */
.btn {
  --btn-h: 38px;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: var(--btn-h);
  padding: 0 16px;
  font-family: var(--font-sans);
  font-size: 14px; font-weight: 500;
  letter-spacing: -0.005em;
  border-radius: 7px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 120ms ease, border-color 120ms ease, color 120ms ease, transform 120ms ease;
  white-space: nowrap;
  text-decoration: none;
}
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.btn-primary {
  background: var(--accent);
  color: var(--accent-fg);
  border-color: var(--accent);
}
.btn-primary:hover { background: var(--accent-2); border-color: var(--accent-2); }
.btn-secondary {
  background: transparent;
  color: var(--fg);
  border-color: var(--line-strong);
}
.btn-secondary:hover { background: var(--surface-2); border-color: var(--fg-4); }
.btn-ghost {
  background: transparent; color: var(--fg-2); border-color: transparent;
}
.btn-ghost:hover { color: var(--fg); background: var(--surface-2); }
.btn-lg { --btn-h: 44px; padding: 0 20px; font-size: 14.5px; border-radius: 8px; }
.btn-sm { --btn-h: 30px; padding: 0 12px; font-size: 13px; border-radius: 6px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--bg) 78%, transparent);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex; align-items: center; gap: 28px;
  height: 60px;
}
.logo {
  display: inline-flex; align-items: center; gap: 9px;
  color: var(--fg);
  font-weight: 600; font-size: 15px;
  letter-spacing: -0.012em;
}
.logo svg { width: 22px; height: 22px; color: var(--accent); }
.nav {
  display: flex; align-items: center; gap: 4px;
  flex: 1;
}
.nav a, .nav .nav-trigger {
  padding: 6px 10px;
  border-radius: 6px;
  color: var(--fg-2);
  font-size: 13.5px;
  font-weight: 450;
  cursor: pointer;
  background: transparent; border: none;
  font-family: inherit;
  display: inline-flex; align-items: center; gap: 4px;
}
.nav a:hover, .nav .nav-trigger:hover { color: var(--fg); background: var(--surface-2); }
.nav a[aria-current="page"] { color: var(--fg); }

.nav-group { position: relative; }
.nav-trigger .chev {
  width: 10px; height: 10px; opacity: 0.6;
  transition: transform 120ms ease;
}
.nav-group:hover .nav-trigger .chev { transform: rotate(180deg); }
.nav-menu {
  position: absolute; top: calc(100% + 6px); left: -8px;
  min-width: 280px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px;
  box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 120ms ease, transform 120ms ease, visibility 120ms;
}
.nav-group:hover .nav-menu, .nav-group:focus-within .nav-menu {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.nav-menu a {
  display: flex; flex-direction: column; gap: 2px;
  padding: 8px 10px;
  border-radius: 6px;
  color: var(--fg);
}
.nav-menu a small { color: var(--fg-3); font-size: 12px; }
.nav-menu a:hover { background: var(--surface-2); }

.header-right {
  display: flex; align-items: center; gap: 8px;
}

.theme-toggle {
  width: 32px; height: 32px;
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--fg-2);
  border-radius: 7px;
  cursor: pointer;
  transition: color 120ms ease, border-color 120ms ease, background 120ms ease;
}
.theme-toggle:hover { color: var(--fg); border-color: var(--line-strong); background: var(--surface-2); }
.theme-toggle svg { width: 15px; height: 15px; }
[data-theme="dark"] .theme-toggle .icon-sun,
[data-theme="light"] .theme-toggle .icon-moon { display: none; }

/* Mobile nav */
.mobile-toggle { display: none; }
@media (max-width: 920px) {
  .nav { display: none; }
  .mobile-toggle {
    display: inline-flex; align-items: center; justify-content: center;
    width: 32px; height: 32px;
    background: transparent; border: 1px solid var(--line);
    border-radius: 7px; color: var(--fg-2); cursor: pointer;
  }
  .header-right .btn-secondary { display: none; }
  .nav.open {
    display: flex; flex-direction: column;
    position: absolute; top: 60px; left: 0; right: 0;
    background: var(--bg-elev);
    padding: 16px; gap: 4px;
    border-bottom: 1px solid var(--line);
    align-items: stretch;
  }
  .nav.open a, .nav.open .nav-trigger { padding: 10px 12px; }
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--bg-soft);
  padding: 64px 0 32px;
  position: relative;
  z-index: 1;
}
.site-footer .wrap { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr; gap: 48px; }
.footer-brand p { color: var(--fg-3); margin-top: 14px; max-width: 32ch; font-size: 13.5px; }
.footer-col h5 {
  font-family: var(--font-mono);
  font-size: 11px; font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-4);
  margin-bottom: 14px;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { color: var(--fg-2); font-size: 13.5px; }
.footer-col a:hover { color: var(--fg); }
.footer-bottom {
  max-width: var(--maxw); margin: 48px auto 0; padding: 24px 24px 0;
  border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; align-items: center;
  color: var(--fg-4); font-size: 12.5px;
}
.footer-bottom .mono { color: var(--fg-3); }
@media (max-width: 920px) {
  .site-footer .wrap { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

/* ---------- Cards / surfaces ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  position: relative;
}
.card-pad { padding: 24px; }
.card-hover { transition: border-color 140ms ease, transform 140ms ease; }
.card-hover:hover { border-color: var(--line-strong); }

/* ---------- Tags / chips ---------- */
.tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-mono); font-size: 11px;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  color: var(--fg-2);
  letter-spacing: 0;
  white-space: nowrap;
}
.tag-ok { color: var(--ok); border-color: color-mix(in oklab, var(--ok) 35%, var(--line)); background: color-mix(in oklab, var(--ok) 8%, var(--surface)); }
.tag-warn { color: var(--warn); border-color: color-mix(in oklab, var(--warn) 35%, var(--line)); background: color-mix(in oklab, var(--warn) 8%, var(--surface)); }
.tag-err { color: var(--err); border-color: color-mix(in oklab, var(--err) 35%, var(--line)); background: color-mix(in oklab, var(--err) 8%, var(--surface)); }
.tag-info { color: var(--fg-2); }

/* dot for status */
.dot { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; background: var(--fg-4); }
.dot-ok { background: var(--ok); box-shadow: 0 0 0 3px color-mix(in oklab, var(--ok) 20%, transparent); }
.dot-warn { background: var(--warn); }
.dot-err { background: var(--err); }
.dot-pulse { position: relative; }
.dot-pulse::after {
  content: ""; position: absolute; inset: -2px; border-radius: 50%;
  border: 1px solid var(--accent);
  animation: pulse 1.6s ease-out infinite;
}
@keyframes pulse {
  0% { transform: scale(0.8); opacity: 1; }
  100% { transform: scale(2.4); opacity: 0; }
}

/* ---------- Hero ---------- */
.hero { padding-top: 88px; padding-bottom: 64px; position: relative; z-index: 1; }
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: start;
}
.hero-meta {
  display: flex; align-items: center; gap: 14px;
  font-family: var(--font-mono);
  font-size: 12px; color: var(--fg-3);
  margin-bottom: 24px;
}
.hero-meta .pin {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
}
.hero-actions { display: flex; gap: 10px; margin-top: 28px; flex-wrap: wrap; }
.trust-strip {
  display: flex; gap: 18px 32px; flex-wrap: wrap;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.trust-strip span {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px; color: var(--fg-3);
}
.trust-strip span::before {
  content: "";
  width: 4px; height: 4px;
  background: var(--fg-4); border-radius: 1px;
  transform: rotate(45deg);
}

/* ---------- Section header ---------- */
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head .eyebrow { margin-bottom: 16px; }
.section-head h2 { margin-bottom: 16px; }

/* ---------- Window / mockup chrome ---------- */
.win {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.win-bar {
  display: flex; align-items: center; gap: 10px;
  height: 36px; padding: 0 12px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--fg-3);
}
.win-bar .lights { display: flex; gap: 6px; }
.win-bar .lights i {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--line-strong); display: block;
}
.win-bar .title { flex: 1; text-align: center; letter-spacing: 0; }
.win-body { padding: 18px; }

/* ---------- Tables (mock collector inventory) ---------- */
.collector-table {
  width: 100%; border-collapse: collapse;
  font-size: 13px;
}
.collector-table th, .collector-table td {
  text-align: left; padding: 10px 12px;
  border-bottom: 1px solid var(--line);
}
.collector-table th {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fg-4);
  background: var(--surface-2);
}
.collector-table tbody tr:last-child td { border-bottom: none; }
.collector-table tbody tr:hover td { background: var(--surface-2); }
.collector-table .name { font-family: var(--font-mono); color: var(--fg); }
.collector-table .meta { color: var(--fg-3); font-family: var(--font-mono); font-size: 12px; }

/* ---------- YAML diff ---------- */
.diff {
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  background: var(--bg-elev);
}
.diff .row { display: grid; grid-template-columns: 36px 16px 1fr; }
.diff .ln { color: var(--fg-5); text-align: right; padding: 0 8px; user-select: none; }
.diff .sign { color: var(--fg-5); text-align: center; }
.diff .add { background: color-mix(in oklab, var(--ok) 10%, transparent); }
.diff .add .sign, .diff .add .code { color: var(--ok); }
.diff .rem { background: color-mix(in oklab, var(--err) 10%, transparent); }
.diff .rem .sign, .diff .rem .code { color: var(--err); }
.diff .code { padding: 0 12px; color: var(--fg-2); white-space: pre; overflow-x: auto; }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(8px); transition: opacity 600ms ease, transform 600ms ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Utilities ---------- */
.muted { color: var(--fg-3); }
.muted-2 { color: var(--fg-4); }
.row-sb { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.stack { display: flex; flex-direction: column; }
.stack-2 > * + * { margin-top: 8px; }
.stack-3 > * + * { margin-top: 12px; }
.stack-4 > * + * { margin-top: 16px; }
.stack-6 > * + * { margin-top: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; }
@media (max-width: 920px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* ---------- CTA closer block ---------- */
.cta-block {
  border: 1px solid var(--line);
  background:
    radial-gradient(900px 320px at 80% 20%, var(--accent-soft), transparent 60%),
    var(--surface);
  border-radius: var(--radius-xl);
  padding: 64px;
  text-align: center;
}
@media (max-width: 720px) { .cta-block { padding: 40px 24px; } }
.cta-block h2 { margin-bottom: 14px; }
.cta-block .actions { display: inline-flex; gap: 10px; margin-top: 28px; flex-wrap: wrap; justify-content: center; }