/* Keycroft's project page: U0's tokens (UI spec) and the mockups' components. */

/* ---------- tokens ---------- */

:root {
  /* IBM Plex where it's installed, the system's own fonts otherwise: the site
     serves no font files and loads nothing from another host. */
  --font-sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "DejaVu Sans Mono", monospace;
  --radius: 4px;
  --radius-lg: 8px;
}

/* dark: sealcroft.com */
:root, :root[data-theme="dark"] {
  color-scheme: dark;
  --background: #04080a;
  --card: #0a1216;
  --muted: #0d171c;
  --foreground: #e9f1f2;
  --muted-foreground: #8ea6ab;
  --faint: #5d7378;
  --border: #16262b;
  --border-strong: #1e343a;
  --input: #557177;
  --primary: #35e0c2;
  --primary-foreground: #04080a;
  --primary-soft: #0e2523;
  --ring: #35e0c2;
  --gold: #c9a961;
  --info: #7aa7e0;
  --info-soft: #0f1a28;
}

/* light: derived; every text colour at least 4.5:1 on its surfaces */
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    color-scheme: light;
    --background: #fbfcfd;
    --card: #ffffff;
    --muted: #f1f5f7;
    --foreground: #0e1a20;
    --muted-foreground: #4f646c;
    --faint: #6b7f86;
    --border: #e1e8ec;
    --border-strong: #c9d4dd;
    --input: #7a8d95;
    --primary: #0b7566;
    --primary-foreground: #ffffff;
    --primary-soft: #e6f5f2;
    --ring: #0b7566;
    --gold: #86661a;
    --info: #2f5d95;
    --info-soft: #eef3fa;
  }
}
:root[data-theme="light"] {
  color-scheme: light;
  --background: #fbfcfd;
  --card: #ffffff;
  --muted: #f1f5f7;
  --foreground: #0e1a20;
  --muted-foreground: #4f646c;
  --faint: #6b7f86;
  --border: #e1e8ec;
  --border-strong: #c9d4dd;
  --input: #7a8d95;
  --primary: #0b7566;
  --primary-foreground: #ffffff;
  --primary-soft: #e6f5f2;
  --ring: #0b7566;
  --gold: #86661a;
  --info: #2f5d95;
  --info-soft: #eef3fa;
}

/* ---------- page ---------- */

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--background);
  color: var(--foreground);
  font: 15px/1.6 var(--font-sans);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--ring); outline-offset: 2px; }
code, .mono { font-family: var(--font-mono); font-size: 0.9em; }
.muted { color: var(--muted-foreground); }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.skip { position: absolute; left: -9999px; top: 8px; }
.skip:focus { left: 16px; z-index: 10; background: var(--card); padding: 6px 10px; border-radius: var(--radius); }

/* top bar: the product's 52 px bar */
.topbar {
  position: sticky; top: 0; z-index: 5;
  background: var(--background); border-bottom: 1px solid var(--border);
}
.bar { display: flex; align-items: center; gap: 20px; min-height: 52px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--foreground); text-decoration: none; font-weight: 600; }
.logo {
  width: 28px; height: 28px; border-radius: var(--radius); flex: none;
  display: grid; place-items: center;
  background: var(--primary-soft); color: var(--primary); border: 1px solid var(--border-strong);
}
.logo.sm { width: 22px; height: 22px; }
.links { display: flex; gap: 18px; margin-left: auto; }
.links a { color: var(--muted-foreground); text-decoration: none; font-size: 14px; }
.links a:hover { color: var(--foreground); }
.theme-switch { display: flex; gap: 4px; }

/* buttons, badges, callouts, cards: as in the mockups */
.btn {
  display: inline-flex; align-items: center; gap: 6px; height: 32px; padding: 0 12px;
  border-radius: var(--radius); border: 1px solid var(--border-strong);
  background: var(--card); color: var(--foreground); font: 500 13px var(--font-sans);
  white-space: nowrap; text-decoration: none; cursor: pointer;
}
.btn.sm { height: 28px; padding: 0 10px; font-size: 12px; }
.btn.lg { height: 40px; padding: 0 16px; font-size: 14px; }
.btn.primary, .btn[aria-pressed="true"] { background: var(--primary); border-color: var(--primary); color: var(--primary-foreground); }
.badge {
  display: inline-flex; align-items: center; height: 20px; padding: 0 7px;
  border-radius: 10px; font: 500 11px/1 var(--font-sans); white-space: nowrap;
  border: 1px solid var(--border-strong); color: var(--muted-foreground); background: var(--muted);
}
.badge.teal { color: var(--primary); border-color: color-mix(in srgb, var(--primary) 45%, transparent); background: var(--primary-soft); }
.callout {
  display: flex; gap: 10px; padding: 12px 14px; font-size: 14px;
  border-radius: var(--radius); border: 1px solid var(--border-strong); background: var(--muted);
}
.callout svg { flex: none; margin-top: 4px; }
.callout.info { background: var(--info-soft); border-color: color-mix(in srgb, var(--info) 35%, transparent); }
.callout.info svg { color: var(--info); }
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-lg); min-width: 0; }

/* sections: longhands, because .wrap's padding shorthand would otherwise
   flatten the vertical rhythm (a class outranks the element selector) */
section.wrap { padding-top: 56px; padding-bottom: 8px; }
h1, h2, h3, h4 { line-height: 1.25; }
h2 { font-size: 24px; font-weight: 600; margin: 0 0 8px; }
.section-lead { color: var(--muted-foreground); max-width: 760px; margin: 0 0 24px; }
.group-title { font-size: 13px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted-foreground); margin: 32px 0 12px; }

/* hero */
section.hero { padding-top: 72px; }
.kicker { font-size: 12px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--gold); margin: 0 0 12px; }
.hero h1 { font-size: 40px; font-weight: 600; margin: 0 0 12px; }
.lede { font-size: 20px; line-height: 1.45; max-width: 760px; margin: 0 0 8px; }
.hero .sub { color: var(--muted-foreground); margin: 0 0 24px; }
.status-note { max-width: 760px; margin-bottom: 24px; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* grids and tiles */
.grid { display: grid; gap: 16px; }
.grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.tile { padding: 16px; font-size: 14px; }
.tile h4 { font-size: 15px; font-weight: 600; margin: 12px 0 6px; }
.tile p { margin: 0; color: var(--muted-foreground); }
.tile p + p { margin-top: 8px; }
.tile .meta { font-size: 12px; color: var(--muted-foreground); border-top: 1px solid var(--border); padding-top: 8px; margin-top: 12px; }
.ic {
  width: 32px; height: 32px; border-radius: var(--radius); display: grid; place-items: center;
  color: var(--primary); background: var(--primary-soft); border: 1px solid color-mix(in srgb, var(--primary) 30%, transparent);
}

/* the diagram, drawn in the page's tokens so it follows the theme switch */
.diagram { margin: 0; padding: 16px; }
.diagram svg { display: block; width: 100%; height: auto;
  --d-bg: var(--card); --d-card: var(--card); --d-card2: var(--muted);
  --d-line: var(--border-strong); --d-line2: var(--input);
  --d-ink: var(--foreground); --d-dim: var(--muted-foreground);
  --d-teal: var(--primary); --d-teal-bg: var(--primary-soft); --d-teal-ink: var(--primary); }
.diagram figcaption { color: var(--muted-foreground); font-size: 13px; margin-top: 12px; }

/* security checks */
.checks ul { list-style: none; margin: 0; padding: 8px 0; }
.checks li { display: flex; gap: 12px; padding: 10px 16px; }
.checks li + li { border-top: 1px solid var(--border); }
.checks li svg { flex: none; margin-top: 4px; color: var(--primary); }
.checks b { font-weight: 600; }
.card-foot { margin: 0; padding: 12px 16px; border-top: 1px solid var(--border); background: var(--muted); color: var(--muted-foreground); font-size: 13px; border-radius: 0 0 var(--radius-lg) var(--radius-lg); }

/* milestones */
.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; font-size: 12px; font-weight: 600; color: var(--muted-foreground); padding: 10px 16px; border-bottom: 1px solid var(--border); white-space: nowrap; }
td { padding: 10px 16px; border-top: 1px solid var(--border); vertical-align: top; }
tbody tr:first-child td { border-top: 0; }
td:first-child { white-space: nowrap; }
td:nth-child(2) { color: var(--muted-foreground); }
td.mono { white-space: nowrap; font-size: 13px; }
tr.current td { background: var(--primary-soft); }

/* licence */
.prose { padding: 4px 16px; }
.prose p { margin: 12px 0; }

/* footer */
.foot { border-top: 1px solid var(--border); margin-top: 64px; padding: 16px 0 24px; font-size: 13px; }
.foot .bar { gap: 16px; }
.foot a { color: var(--muted-foreground); text-decoration: none; }
.foot a:hover { color: var(--foreground); }
.foot .spacer { flex: 1; }

/* narrower screens */
@media (max-width: 960px) {
  .grid.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .links { margin-left: 0; order: 3; width: 100%; padding-bottom: 8px; }
  .theme-switch { margin-left: auto; }
  .grid.four, .grid.two { grid-template-columns: minmax(0, 1fr); }
  section.hero { padding-top: 40px; }
  .hero h1 { font-size: 32px; }
  .lede { font-size: 18px; }
  .foot .spacer { display: none; }
}

@media (prefers-reduced-motion: no-preference) {
  .btn, .links a, .foot a { transition: background-color 120ms ease, color 120ms ease; }
}