/* Sentinel site. Colors and type mirror Sentinel's ui-kit tokens (packages/ui-kit/src/tokens.css)
   so the site and the app read as one product. Dark first, like the app. */
:root {
  --bg: #0c1017;          /* --bg-canvas */
  --bg-band: #0f141d;     /* --bg-sidebar */
  --card: #131926;        /* --bg-card */
  --line: #1e2736;        /* --border-card */
  --text: #e7ecf5;        /* --text-primary */
  --muted: #98a2b5;       /* --text-muted */
  --dim: #5b6474;         /* --text-faint */
  --accent: #3f7ce8;      /* --accent-primary */
  --accent-text: #ffffff;
  --link: #5e93f5;
  --live: #3ecf8e;        /* --status-success: back in stock */
  --on-live: #0c1017;
  --teal: #4fa3a0;        /* from the logo */
  --shadow: rgba(0, 0, 0, .55);

  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --step--1: .875rem;
  --step-0: 1.0625rem;
  --step-1: 1.3125rem;
  --step-2: 1.625rem;
  --step-3: clamp(2rem, 4.2vw, 3rem);
  --step-4: clamp(2.6rem, 6.4vw, 5.25rem);
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #eef1f6; --bg-band: #e6eaf2; --card: #ffffff; --line: #dfe5ee;
    --text: #1c2433; --muted: #525c6e; --dim: #8b95a7; --accent: #3f7ce8; --accent-text: #ffffff;
    --link: #2f66c8; --live: #3ecf8e; --on-live: #0c1017; --teal: #2f7f7c; --shadow: rgba(28, 36, 51, .22);
    color-scheme: light;
  }
}
:root[data-theme="light"] {
  --bg: #eef1f6; --bg-band: #e6eaf2; --card: #ffffff; --line: #dfe5ee;
  --text: #1c2433; --muted: #525c6e; --dim: #8b95a7; --accent: #3f7ce8; --accent-text: #ffffff;
  --link: #2f66c8; --live: #3ecf8e; --on-live: #0c1017; --teal: #2f7f7c; --shadow: rgba(28, 36, 51, .22);
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: var(--step-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { color: inherit; }
p a, li a, .link { color: var(--link); text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
.wrap {
  max-width: 1200px;
  margin-inline: auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
h1, h2, h3 { font-family: var(--sans); line-height: 1.08; margin: 0; text-wrap: balance; }
h2 { font-size: var(--step-3); font-weight: 700; letter-spacing: -.025em; }
h3 { font-size: var(--step-1); font-weight: 600; line-height: 1.25; }
p { margin: 0; }
code, kbd { font-family: var(--mono); font-size: .9em; }
kbd { background: var(--card); border: 1px solid var(--line); border-radius: 4px; padding: 1px 6px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .6em;
  font: 600 var(--step-0)/1 var(--sans);
  padding: .95em 1.3em; border-radius: 8px; text-decoration: none;
  border: 1px solid transparent; transition: background-color .15s ease, border-color .15s ease;
}
.btn-primary { background: var(--accent); color: var(--accent-text); }
.btn-primary:hover { background: color-mix(in srgb, var(--accent) 85%, white); }
.btn-quiet { background: transparent; color: var(--text); border-color: var(--line); }
.btn-quiet:hover { border-color: var(--muted); }
.btn small { font-weight: 400; opacity: .8; font-size: var(--step--1); }

.beta {
  display: inline-block; font: 600 .75rem/1 var(--mono); color: var(--live);
  border: 1px solid color-mix(in srgb, var(--live) 45%, transparent);
  background: color-mix(in srgb, var(--live) 10%, transparent);
  padding: 4px 7px; border-radius: 999px; vertical-align: middle; letter-spacing: 0;
}

/* ---------- Header / footer ---------- */
.top { padding-block: 20px; }
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.mark { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 700; font-size: 1.2rem; letter-spacing: -.01em; }
.mark img { width: 34px; height: auto; display: block; }
.top nav { display: flex; gap: clamp(14px, 3vw, 28px); font-weight: 500; color: var(--muted); }
.top nav a { text-decoration: none; }
.top nav a:hover, .top nav a[aria-current="page"] { color: var(--text); }

footer { padding-block: 32px 48px; font-size: var(--step--1); color: var(--muted); border-top: 1px solid var(--line); }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px 32px; }
footer nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
footer a { text-decoration: none; }
footer a:hover { color: var(--text); }
.ob1 { font-weight: 600; color: var(--text); }

/* ---------- Sections ---------- */
.section { padding-block: clamp(64px, 9vw, 120px); }
.section-head { display: grid; gap: 14px; max-width: 46rem; }
.section-head p { color: var(--muted); font-size: var(--step-1); line-height: 1.5; }
.band { background: var(--bg-band); border-block: 1px solid var(--line); }

/* Screenshot frame: the app's own window, never a fake */
.shot {
  margin: 0; border-radius: 12px; overflow: hidden; border: 1px solid var(--line);
  background: var(--card); box-shadow: 0 30px 60px -30px var(--shadow);
}
.shot img { display: block; width: 100%; }
.shot figcaption { padding: 10px 14px; font-size: var(--step--1); color: var(--muted); border-top: 1px solid var(--line); }

@media (max-width: 720px) {
  .top nav a.hide-sm { display: none; }
}

/* ---------- Long-form pages (guide, privacy, terms) ---------- */
.doc { padding-block: clamp(32px, 6vw, 72px) clamp(64px, 9vw, 120px); }
.doc .wrap { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: clamp(28px, 5vw, 72px); align-items: start; }
.doc-toc { position: sticky; top: calc(env(safe-area-inset-top, 0px) + 24px); font-size: var(--step--1); display: grid; gap: 4px; }
.doc-toc strong { color: var(--text); margin-bottom: 6px; font-size: var(--step-0); }
.doc-toc a { color: var(--muted); text-decoration: none; padding: 4px 0; }
.doc-toc a:hover { color: var(--text); }
.prose { max-width: 70ch; min-width: 0; }
.prose h1 { font-size: var(--step-3); font-weight: 700; letter-spacing: -.025em; }
.prose .meta { margin-top: 12px; color: var(--muted); font-size: var(--step--1); }
.prose .intro { margin-top: 20px; font-size: var(--step-1); color: var(--muted); line-height: 1.5; }
.prose h2 { font-size: var(--step-2); margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--line); scroll-margin-top: 24px; }
.prose h3 { margin-top: 32px; }
.prose p, .prose ul, .prose ol { margin-top: 16px; }
.prose ul, .prose ol { padding-left: 1.3em; display: grid; gap: 8px; }
.prose li::marker { color: var(--dim); }
.prose strong { color: var(--text); font-weight: 600; }
.prose .shot { margin-top: 24px; }
.prose table { width: 100%; border-collapse: collapse; margin-top: 16px; font-size: var(--step--1); }
.prose th, .prose td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.prose th { color: var(--muted); font-weight: 600; }
.table-scroll { overflow-x: auto; }
.note {
  margin-top: 20px; padding: 14px 16px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--card); color: var(--muted); font-size: var(--step--1);
}
.note strong { color: var(--text); }
.step-num {
  display: inline-grid; place-items: center; width: 1.6em; height: 1.6em; margin-right: .4em; border-radius: 50%;
  background: color-mix(in srgb, var(--teal) 20%, transparent); color: var(--teal); font: 600 .8em/1 var(--mono); vertical-align: .15em;
}
@media (max-width: 860px) {
  .doc .wrap { grid-template-columns: minmax(0, 1fr); }
  .doc-toc { position: static; border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; background: var(--card); }
}