/*
 * clustersentry.com landing page styles.
 *
 * Palette is the Orbit scheme from design/brand/spec.md §2. The top bar is
 * chrome: it stays dark (#141414 light / #0A0A0A dark) in both themes and uses
 * the OnDark wordmark. The page itself follows the OS scheme via
 * prefers-color-scheme, with a data-theme override honoured if set. No
 * JavaScript is used anywhere on this page.
 */
:root {
  color-scheme: light dark;

  --page: #FAF7F2;
  --surface: #FFFFFF;
  --surface2: #F1EDE6;
  --chrome: #141414;
  --chrome-ink: #FAF7F2;
  --ink: #141414;
  --ink2: #3D3833;
  --muted: #5E5A54;
  --line: #E8E1D7;
  --line-strong: #C9C1B4;

  /* accent-as-fill keeps near-black ink on orange; accent-ink is the
     text-safe orange for links and small text. */
  --accent: #FF6B2C;
  --accent-hover: #FF8347;
  --on-accent: #141414;
  --accent-ink: #C2410C;
  --accent-tint: #FFF1E8;

  --ok: #15803D;
  --code-bg: #141414;
  --code-ink: #F0EBE2;

  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --page: #141414;
    --surface: #1B1B1B;
    --surface2: #232323;
    --chrome: #0A0A0A;
    --ink: #FAF7F2;
    --ink2: #D6D0C7;
    --muted: #A8A29A;
    --line: #3A3631;
    --line-strong: #4C473F;
    --accent: #FF7A40;
    --accent-hover: #FF8F5C;
    --on-accent: #141414;
    --accent-ink: #FF9C70;
    --accent-tint: #2A1C14;
    --ok: #34D399;
    --code-bg: #0A0A0A;
  }
}
:root[data-theme="light"] {
  --page: #FAF7F2; --surface: #FFFFFF; --surface2: #F1EDE6; --chrome: #141414;
  --chrome-ink: #FAF7F2; --ink: #141414; --ink2: #3D3833; --muted: #5E5A54;
  --line: #E8E1D7; --line-strong: #C9C1B4; --accent: #FF6B2C; --accent-hover: #FF8347;
  --on-accent: #141414; --accent-ink: #C2410C; --accent-tint: #FFF1E8; --ok: #15803D;
  --code-bg: #141414; --code-ink: #F0EBE2;
}
:root[data-theme="dark"] {
  --page: #141414; --surface: #1B1B1B; --surface2: #232323; --chrome: #0A0A0A;
  --ink: #FAF7F2; --ink2: #D6D0C7; --muted: #A8A29A; --line: #3A3631;
  --line-strong: #4C473F; --accent: #FF7A40; --accent-hover: #FF8F5C;
  --on-accent: #141414; --accent-ink: #FF9C70; --accent-tint: #2A1C14; --ok: #34D399;
  --code-bg: #0A0A0A; --code-ink: #F0EBE2;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--page); color: var(--ink);
  font-family: var(--sans); font-size: 16px; line-height: 1.55;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
a { color: var(--accent-ink); }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 32px; }
.mono { font-family: var(--mono); }
.logo { display: block; height: 30px; width: auto; }
.logo-onlight { display: block; }
.logo-ondark { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .logo-onlight { display: none; }
  :root:not([data-theme="light"]) .logo-ondark { display: block; }
}
:root[data-theme="dark"] .logo-onlight { display: none; }
:root[data-theme="dark"] .logo-ondark { display: block; }

/* ---- top bar (chrome: stays dark in both themes) ---- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: var(--chrome); border-bottom: 1px solid rgba(255,255,255,.08);
}
.topbar-inner { display: flex; align-items: center; gap: 28px; height: 64px; }
.brand { display: flex; align-items: center; text-decoration: none; flex: none; }
.tabs { display: flex; gap: 2px; margin-left: 6px; overflow-x: auto; scrollbar-width: none; flex: 1; }
.tabs::-webkit-scrollbar { display: none; }
.tabs a {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .09em; text-transform: uppercase;
  color: #B9B2A7; text-decoration: none; padding: 8px 10px; border-radius: 3px; white-space: nowrap;
  border-bottom: 2px solid transparent; transition: color .12s, border-color .12s;
}
.tabs a:hover { color: #FAF7F2; }
.tabs a.active { color: #FAF7F2; border-bottom-color: var(--accent); }
.topbar-right { display: flex; align-items: center; gap: 14px; flex: none; }
.signin {
  font-family: var(--mono); font-size: 11px; letter-spacing: .06em; text-transform: uppercase;
  text-decoration: none; color: #141414; background: var(--accent);
  border: 1px solid var(--accent); border-radius: 3px; padding: 7px 14px; transition: .12s; white-space: nowrap;
}
.signin:hover { background: var(--accent-hover); border-color: var(--accent-hover); }

/* ---- hero ---- */
.hero { padding: 72px 0 8px; }
.eyebrow { font-family: var(--mono); font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--accent-ink); margin: 0 0 18px; }
h1 { margin: 0; font-size: clamp(2rem, 4.2vw, 2.9rem); line-height: 1.07; letter-spacing: -.03em; font-weight: 640; max-width: 22ch; }
.lede { margin: 22px 0 0; max-width: 58ch; font-size: 1.1rem; line-height: 1.6; color: var(--ink2); }
.cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.btn {
  font-family: var(--mono); font-size: 12.5px; letter-spacing: .05em; text-transform: uppercase;
  text-decoration: none; padding: 12px 18px; border-radius: 3px;
  border: 1px solid var(--accent); background: var(--accent); color: var(--on-accent); transition: .13s;
}
.btn:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn.ghost:hover { background: var(--ink); color: var(--page); border-color: var(--ink); }

/* ---- fact strip ---- */
.facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin-top: 54px; }
.fact { padding: 16px 24px 18px; border-right: 1px solid var(--line); }
.fact:last-child { border-right: 0; }
.fact .k { font-family: var(--mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--accent-ink); }
.fact .v { margin-top: 6px; font-size: .96rem; color: var(--ink2); line-height: 1.45; }

/* ---- diagram ---- */
.diagram { margin: 54px 0 0; border: 1px solid var(--line); background: var(--surface); border-radius: 4px; padding: 10px 14px; }
.diagram svg { display: block; width: 100%; height: auto; }
.dash { stroke-dasharray: 5 4; }
.knob { fill: var(--surface); stroke: var(--line-strong); }
.n-title { font: 600 13px var(--mono); fill: var(--ink); }
.n-sub { font: 11px var(--mono); fill: var(--muted); }
.n-tag { font: 10.5px var(--mono); fill: var(--accent-ink); }

/* ---- section scaffolding ---- */
.sec { padding: 60px 0 20px; }
.sec-head { display: flex; align-items: baseline; gap: 16px; margin-bottom: 8px; }
.sec-num { font-family: var(--mono); font-size: 12px; color: var(--accent-ink); letter-spacing: .08em; }
h2 { margin: 0; font-size: clamp(1.5rem, 2.6vw, 1.95rem); letter-spacing: -.02em; font-weight: 640; line-height: 1.12; }
.sec-lede { margin: 14px 0 30px; max-width: 64ch; color: var(--ink2); font-size: 1.04rem; }
h3 { margin: 0 0 8px; font-size: 1.04rem; letter-spacing: -.01em; font-weight: 640; }
p { margin: 0 0 14px; }
.muted { color: var(--muted); }
.cols { display: grid; gap: 18px; }
.cols-2 { grid-template-columns: 1fr 1fr; }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.card { border: 1px solid var(--line); background: var(--surface); border-radius: 4px; padding: 22px 24px; }
.card.accent { border-top: 2px solid var(--accent); }
.card h3 { font-family: var(--mono); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink); }
.card p:last-child { margin-bottom: 0; }
ul.clean { list-style: none; margin: 12px 0 0; padding: 0; }
ul.clean li { position: relative; padding: 9px 0 9px 20px; border-top: 1px solid var(--line); font-size: .95rem; color: var(--ink2); }
ul.clean li:first-child { border-top: 0; padding-top: 2px; }
ul.clean li::before { content: ""; position: absolute; left: 0; top: 15px; width: 7px; height: 2px; background: var(--accent); }
ul.clean li:first-child::before { top: 8px; }
ul.clean li b { color: var(--ink); font-weight: 600; }
ol.steps { list-style: none; counter-reset: s; margin: 6px 0 0; padding: 0; max-width: 70ch; }
ol.steps li { counter-increment: s; position: relative; padding: 14px 0 14px 46px; border-top: 1px solid var(--line); }
ol.steps li:first-child { border-top: 0; }
ol.steps li::before { content: counter(s, decimal-leading-zero); position: absolute; left: 0; top: 14px; font-family: var(--mono); font-size: 12px; color: var(--accent-ink); }
ol.steps li b { display: block; color: var(--ink); font-weight: 600; margin-bottom: 2px; }
ol.steps li span { color: var(--ink2); font-size: .95rem; }

/* ---- comparison table ---- */
table.cmp { width: 100%; border-collapse: collapse; margin: 10px 0 8px; font-size: .95rem; }
table.cmp th, table.cmp td { text-align: center; border-bottom: 1px solid var(--line); padding: 12px 16px; vertical-align: top; }
table.cmp th:first-child, table.cmp td:first-child { text-align: left; width: 42%; }
table.cmp th { font-family: var(--mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); vertical-align: bottom; border-bottom: 1px solid var(--line-strong); }
table.cmp th.cs { color: var(--accent-ink); border-bottom: 1px solid var(--accent); }
table.cmp td.cs { background: var(--accent-tint); }
table.cmp tr:last-child td { border-bottom: 0; }
.mk { font-family: var(--mono); font-size: 14px; font-weight: 600; line-height: 1; }
.mk.y { color: var(--ok); }
.mk.n { color: var(--accent-ink); }
.q { display: block; font-family: var(--mono); font-size: 11px; color: var(--muted); margin-top: 4px; }
.legend { font-family: var(--mono); font-size: 11px; color: var(--muted); margin: 10px 0 0; }

/* ---- code ---- */
pre { margin: 0; background: var(--code-bg); color: var(--code-ink); border-radius: 4px; padding: 18px 20px; overflow: auto; font-family: var(--mono); font-size: 12.5px; line-height: 1.7; }

/* ---- request access form ---- */
.req { margin-top: 34px; max-width: 560px; border: 1px solid var(--line); background: var(--surface); border-radius: 4px; padding: 24px; }
.req-title { font-family: var(--mono); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink); margin: 0 0 6px; }
.req-lede { margin: 0 0 18px; font-size: .96rem; }
.req-row { display: flex; gap: 12px; }
.req-row .req-field { flex: 1; }
.req-field { margin-bottom: 14px; }
.req-field label { display: block; font-family: var(--mono); font-size: 11px; letter-spacing: .04em; color: var(--muted); margin-bottom: 5px; }
.req-field input { width: 100%; box-sizing: border-box; background: var(--surface2); color: var(--ink); border: 1px solid var(--line-strong); border-radius: 4px; padding: 10px 12px; font: inherit; font-size: .96rem; }
.req-field input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-tint); }
.req-msg { font-size: .92rem; margin: 0 0 12px; }
.req-error { color: var(--accent-ink); }
.req-ok { margin-top: 18px; color: var(--ok); }
.req .btn[disabled] { opacity: .5; cursor: default; }
@media (max-width: 600px) {
  .req-row { flex-direction: column; gap: 0; }
}

/* ---- footer ---- */
footer { border-top: 1px solid var(--line); margin-top: 64px; padding: 30px 0 54px; }
.foot { display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between; align-items: baseline; font-family: var(--mono); font-size: 11.5px; letter-spacing: .04em; color: var(--muted); }
.foot a { text-decoration: none; color: var(--ink2); }
.foot a:hover { color: var(--accent-ink); }
.foot .links { display: flex; gap: 16px; flex-wrap: wrap; }

@media (max-width: 820px) {
  .wrap { padding: 0 20px; }
  .topbar-inner { gap: 14px; }
  .tabs { display: none; }
  .cols-3 { grid-template-columns: 1fr; }
  .facts { grid-template-columns: 1fr; }
  .fact { border-right: 0; border-bottom: 1px solid var(--line); }
  .fact:last-child { border-bottom: 0; }
}
@media (max-width: 600px) {
  .cols-2 { grid-template-columns: 1fr; }
  .hero { padding: 52px 0 8px; }
}