/* CostEQ blog — reuses the palette and type of the main site so the blog reads
   as the same property. Plain CSS, no build step, no framework. */

:root {
  --ground: #0d0d0d;
  --panel: #232a1c;
  --line: #3a4030;
  --ink: #ffffff;
  --muted: #a6b0a0;
  --acid: #edee3e;
  --sage: #c6d2c6;

  --display: "Space Grotesk", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --body: "IBM Plex Sans", system-ui, sans-serif;

  --measure: 68ch;
  --pad: clamp(18px, 5vw, 40px);
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--sage);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.65;
  /* The stage on the homepage is a locked viewport; the blog is an ordinary
     document and scrolls. */
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--sage); text-underline-offset: 2px; }
a:hover { color: var(--acid); }

:focus-visible {
  outline: 2px solid var(--acid);
  outline-offset: 3px;
  border-radius: 3px;
}

img { max-width: 100%; height: auto; }

/* ------------------------------------------------------------------ topbar */

.bl-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px var(--pad);
  border-bottom: 1px solid var(--line);
}

.bl-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}

.bl-brand__name {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}
.bl-brand__name em { font-style: normal; color: var(--acid); }
.bl-brand__tm { font-size: 0.6em; vertical-align: super; color: var(--muted); }

.bl-topbar__link {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
}

/* -------------------------------------------------------------------- main */

.bl-main {
  flex: 1 0 auto;
  width: 100%;
  max-width: calc(var(--measure) + var(--pad) * 2);
  margin: 0 auto;
  padding: clamp(28px, 6vh, 56px) var(--pad);
}

.bl-eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--acid);
  margin: 0 0 10px;
}

h1, h2, h3 {
  font-family: var(--display);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.18;
  letter-spacing: -0.015em;
}

.bl-index__head h1 {
  font-size: clamp(1.6rem, 4vw, 2.3rem);
  margin: 0 0 28px;
  max-width: 22ch;
}

/* ------------------------------------------------------------------- index */

.bl-list { list-style: none; margin: 0; padding: 0; }

.bl-card {
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.bl-card h2 {
  font-size: clamp(1.15rem, 2.6vw, 1.45rem);
  margin: 6px 0 8px;
}
.bl-card h2 a { text-decoration: none; color: var(--ink); }
.bl-card h2 a:hover { color: var(--acid); }

.bl-card__lede { margin: 0 0 10px; color: var(--muted); }

.bl-meta {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin: 0;
  text-transform: uppercase;
}

.bl-chip {
  display: inline-block;
  margin-left: 8px;
  padding: 1px 7px;
  border: 1px solid var(--acid);
  border-radius: 999px;
  color: var(--acid);
  font-size: 0.66rem;
}

.bl-empty { color: var(--muted); }

/* -------------------------------------------------------------------- tags */

.bl-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
}

.bl-tag {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 3px 8px;
}

/* -------------------------------------------------------------------- post */

.bl-back { margin: 0 0 22px; }
.bl-back a {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
}

.bl-draft {
  margin: 0 0 20px;
  padding: 10px 14px;
  border: 1px solid var(--acid);
  border-radius: 10px;
  background: rgba(237, 238, 62, 0.07);
  color: var(--acid);
  font-family: var(--mono);
  font-size: 0.72rem;
}

.bl-post__head h1 {
  font-size: clamp(1.7rem, 5vw, 2.6rem);
  margin: 10px 0 12px;
}

.bl-lede {
  font-size: 1.05rem;
  color: var(--muted);
  margin: 0;
}

.bl-cover {
  display: block;
  width: 100%;
  margin: 28px 0 0;
  border: 1px solid var(--line);
  border-radius: 12px;
}

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

.bl-prose { margin-top: 28px; }

.bl-prose > * + * { margin-top: 1.15em; }

.bl-prose h2 { font-size: 1.35rem; margin-top: 1.9em; }
.bl-prose h3 { font-size: 1.1rem; margin-top: 1.6em; }

.bl-prose a { color: var(--acid); }

.bl-prose ul,
.bl-prose ol { padding-left: 1.3em; }
.bl-prose li + li { margin-top: 0.4em; }

.bl-prose blockquote {
  margin-left: 0;
  margin-right: 0;
  padding: 2px 0 2px 16px;
  border-left: 2px solid var(--line);
  color: var(--muted);
}

.bl-prose code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 1px 5px;
}

.bl-prose pre {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
  overflow-x: auto;
}
.bl-prose pre code {
  background: none;
  border: 0;
  padding: 0;
  font-size: 0.85rem;
}

.bl-prose table {
  width: 100%;
  border-collapse: collapse;
  display: block;
  overflow-x: auto;
}
.bl-prose th,
.bl-prose td {
  border: 1px solid var(--line);
  padding: 7px 10px;
  text-align: left;
}
.bl-prose th { color: var(--ink); font-family: var(--display); }

.bl-prose hr { border: 0; border-top: 1px solid var(--line); }

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

.bl-footer {
  flex: 0 0 auto;
  border-top: 1px solid var(--line);
  padding: 16px var(--pad) 22px;
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--muted);
}

.bl-footer p { margin: 0; }
.bl-footer__id { color: var(--ink); }
.bl-footer__id strong { font-family: var(--display); font-weight: 600; }
.bl-footer__links a { color: var(--sage); text-decoration: underline; }
.bl-footer__links a:hover { color: var(--acid); }
.bl-footer__links span { padding: 0 4px; }
.bl-footer__legal { font-size: 0.7rem; margin-top: 6px !important; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}