/* appliedin.dev — documentation-style landing page.
   Structure follows the Claude docs (sidebar, narrow prose column, card grids);
   the palette is AppliedIn's own green so the site and the product agree. */

/* The same tokens the dashboard uses (web/styles.css), so the site and the tool
   are one surface rather than two products that happen to share a name. Values
   are copied rather than imported: pulling in the dashboard stylesheet would
   bring 60KB of application layout with it. */

:root {
  --bg: #101312;
  --bg_sunk: #151917;
  --ink: #e8ede9;
  --ink_2: #c3cec7;
  --muted: #9fada3;
  --faint: #66716a;
  --line: #262d28;
  --line_2: #343d37;

  /* The product signals with green for good and amber for attention. On a page
     that is prose rather than a board, they mark the same things: what worked,
     and what needs a person. */
  --accent: #3fd68f;
  --accent_soft: #141b17;
  --accent_line: #24352b;
  --accent_ink: #08130d;
  --warn: #f2b13e;
  --warn_soft: #1b1710;
  --warn_line: #3a301b;

  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --side_w: 232px;
  --doc_w: 700px;
  --r: 9px;
}

/* The dashboard's light theme, matched. It flips on the reader's preference
   here because a marketing page has no theme toggle to remember. */
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f7f6;
    --bg_sunk: #f1f4f1;
    --ink: #171d19;
    --ink_2: #38443c;
    --muted: #5a675e;
    --faint: #8b968e;
    --line: #e1e6e1;
    --line_2: #c9d2c9;

    --accent: #0e9c62;
    --accent_soft: #eef7f2;
    --accent_line: #c6e3d4;
    --accent_ink: #ffffff;
    --warn: #e29c17;
    --warn_soft: #fdf6e8;
    --warn_line: #eedcb4;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

code { font-family: var(--mono); font-size: 0.88em; }

/* --- top bar ------------------------------------------------------------- */

.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; padding: 0 28px; height: 60px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex; align-items: center; gap: 9px;
  font-weight: 600; font-size: 15.5px; letter-spacing: -0.01em;
  color: var(--ink);
}
.brand:hover { text-decoration: none; }
.brand img { border-radius: 6px; }

.topnav { display: flex; align-items: center; gap: 22px; }
/* Plain nav links only. `.topnav > a` outranks `.btn_primary` on specificity, so
   scoping this to :not(.btn) stops it painting muted grey on the green button. */
.topnav > a:not(.btn) { color: var(--muted); font-size: 14px; font-weight: 500; }
.topnav > a:not(.btn):hover { color: var(--ink); text-decoration: none; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 7px; font-size: 13.5px; font-weight: 500;
  padding: 7px 14px; border: 1px solid transparent; white-space: nowrap;
}
.btn:hover { text-decoration: none; }
.btn_primary { background: var(--accent); color: var(--accent_ink); }
.btn_primary:hover { filter: brightness(1.07); }
.btn_quiet { border-color: var(--line_2); color: var(--ink); }
.btn_quiet:hover { background: var(--bg_sunk); }
.btn.lg { font-size: 15px; padding: 10px 20px; }

/* --- layout -------------------------------------------------------------- */

.shell {
  display: grid;
  grid-template-columns: var(--side_w) minmax(0, 1fr);
  gap: 48px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px;
}

.sidebar {
  position: sticky; top: 60px; align-self: start;
  max-height: calc(100vh - 60px); overflow-y: auto;
  padding: 34px 0 60px;
}
.side_h {
  margin: 22px 0 8px; font-size: 11.5px; font-weight: 600;
  letter-spacing: 0.07em; text-transform: uppercase; color: var(--faint);
}
.side_h:first-child { margin-top: 0; }
.sidebar a {
  display: block; padding: 5px 0 5px 12px; margin-left: -12px;
  font-size: 14px; color: var(--muted); border-left: 2px solid transparent;
}
.sidebar a:hover { color: var(--ink); text-decoration: none; border-left-color: var(--line_2); }

.doc { padding: 34px 0 96px; min-width: 0; }
.doc article { max-width: var(--doc_w); }

/* --- prose --------------------------------------------------------------- */

.eyebrow {
  margin: 0 0 10px; font-size: 12px; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent);
}

h1 {
  margin: 0 0 16px; font-size: 40px; line-height: 1.14;
  letter-spacing: -0.025em; font-weight: 700;
}
h2 {
  margin: 52px 0 14px; font-size: 25px; line-height: 1.25;
  letter-spacing: -0.025em; font-weight: 700;
  scroll-margin-top: 84px;
}
h3 {
  margin: 30px 0 10px; font-size: 17px; line-height: 1.35;
  letter-spacing: -0.011em; font-weight: 600;
}

p { margin: 0 0 16px; color: var(--ink_2); }
.lede { font-size: 18.5px; line-height: 1.6; color: var(--ink); }
strong { color: var(--ink); font-weight: 600; }
em { font-style: italic; }

hr { border: 0; border-top: 1px solid var(--line); margin: 52px 0; }

.btnrow { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0 8px; }

/* --- callouts ------------------------------------------------------------ */

.callout {
  border: 1px solid var(--line);
  border-left: 3px solid var(--line_2);
  background: var(--bg_sunk);
  border-radius: var(--r);
  padding: 16px 20px;
  margin: 22px 0;
}
.callout p:last-child, .callout ul:last-child { margin-bottom: 0; }
.callout_info { border-left-color: var(--accent); background: var(--accent_soft); border-color: var(--accent_line); }
.callout_warn { border-left-color: var(--warn); background: var(--warn_soft); border-color: var(--warn_line); }
.callout_warn ul { margin: 10px 0 0; padding-left: 20px; }
.callout_warn li { margin-bottom: 8px; color: var(--ink_2); }
.callout_quote .q {
  font-size: 18px; color: var(--ink); font-weight: 500;
  margin-bottom: 10px;
}

/* --- card grids ---------------------------------------------------------- */

.cards { display: grid; gap: 14px; margin: 24px 0; }
.cols_2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cols_3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.card {
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 18px;
  background: var(--bg);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.card:hover { border-color: var(--line_2); box-shadow: 0 1px 3px rgba(0,0,0,0.05); }
.card h3 { margin: 0 0 7px; font-size: 15px; }
.card p { margin: 0; font-size: 14.5px; line-height: 1.6; color: var(--muted); }
.card_n {
  font-family: var(--mono); font-size: 12px; color: var(--accent);
  margin: 0 0 8px !important; letter-spacing: 0.04em;
}
.cards.tight .card { padding: 15px 18px; }
.mono_note { font-family: var(--mono); font-size: 13px !important; color: var(--accent) !important; }

/* --- code and terminal --------------------------------------------------- */

.code, .term {
  background: var(--bg_sunk);
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow-x: auto;
  margin: 20px 0;
}
.code pre, .term pre { margin: 0; padding: 16px 18px; }
.code code, .term code {
  font-family: var(--mono); font-size: 12.8px; line-height: 1.75;
  color: var(--ink_2); white-space: pre;
}
.term .d { color: var(--faint); }
.term .k { color: var(--ink); font-weight: 500; }
.term .g { color: var(--accent); font-weight: 500; }
.term .a { color: var(--warn); font-weight: 500; }
.code .d { color: var(--faint); }

/* --- table --------------------------------------------------------------- */

.req { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 14.5px; }
.req th, .req td {
  text-align: left; padding: 11px 14px; border: 1px solid var(--line);
  vertical-align: top;
}
.req th { background: var(--bg_sunk); font-weight: 600; font-size: 13px; }
.req td { color: var(--ink_2); }

/* --- footer -------------------------------------------------------------- */

.doc_foot {
  max-width: var(--doc_w);
  margin-top: 60px; padding-top: 22px;
  border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  font-size: 14px;
}
.doc_foot p { margin: 0; display: flex; gap: 18px; }
.doc_foot .muted { color: var(--faint); font-family: var(--mono); font-size: 13px; }

/* --- responsive ---------------------------------------------------------- */

@media (max-width: 900px) {
  .shell { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .sidebar { display: none; }
  .cols_2, .cols_3 { grid-template-columns: minmax(0, 1fr); }
  h1 { font-size: 34px; }
  .topnav > a:not(.btn) { display: none; }
  .topbar { padding: 0 18px; }
  .shell { padding: 0 18px; }
}

/* the small heading over the log sample, quieter than a real section heading */
.mini_h {
  margin: 30px 0 8px;
  font-size: 12.5px; font-weight: 600; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--faint);
}

.foot_links { display: flex; gap: 18px; flex-wrap: wrap; }

/* --- docs behaviour ------------------------------------------------------ */

/* Where the reader is. Without this the sidebar is a list, not a map. */
.sidebar a.active {
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 500;
}

/* A section nobody can link to is a section nobody can point a colleague at. */
h2, h3 { position: relative; }
.anchor {
  position: absolute; left: -0.85em; top: 0;
  opacity: 0; color: var(--faint); font-weight: 400;
  text-decoration: none; padding-right: 0.35em;
  transition: opacity 0.12s ease;
}
h2:hover .anchor, h3:hover .anchor, .anchor:focus { opacity: 1; }
.anchor:hover { color: var(--accent); text-decoration: none; }

@media (max-width: 900px) { .anchor { display: none; } }

.demo_note { font-size: 14.5px; color: var(--muted); margin: 18px 0 0; }

/* Selection inverts, as on the reference: the page has one ink and one paper. */
::selection { background: var(--accent); color: var(--accent_ink); }

/* --- the architecture diagram -------------------------------------------- */

/* Wider than the prose column: a graph squeezed to a text measure is unreadable,
   and this one is the clearest statement of how the thing works. */
.diagram {
  margin: 26px 0 30px;
  margin-left: calc(-1 * clamp(0px, (100% - var(--doc_w)) / 2 + 90px, 150px));
  margin-right: calc(-1 * clamp(0px, (100% - var(--doc_w)) / 2 + 90px, 150px));
}
.diagram picture, .diagram img {
  display: block; width: 100%; height: auto;
  border: 1px solid var(--line); border-radius: var(--r);
  background: var(--bg);
}
.diagram figcaption {
  margin-top: 10px; font-size: 13px; color: var(--faint);
}

@media (max-width: 900px) {
  .diagram { margin-left: 0; margin-right: 0; }
}