/* ==========================================================================
   Design tokens
   ========================================================================== */
:root {
  --bg:        #0b0e14;
  --surface:   #11161f;
  --surface-2: #161c27;
  --border:    #232b38;
  --text:      #e6e1d3;
  --text-dim:  #8b93a1;
  --accent:    #ffb454;   /* signal amber — links, highlights */
  --accent-2:  #5ccfe6;   /* cyan — used sparingly, code/secondary */
  --danger:    #ff6b6b;   /* reserved for status/severity only */

  --mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --sans: "IBM Plex Sans", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --max-w: 860px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
a:hover, a:focus-visible {
  border-bottom-color: var(--accent);
}
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 2px;
}

h1, h2, h3 {
  font-family: var(--mono);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: var(--text);
}

code, pre, .mono {
  font-family: var(--mono);
}

/* ==========================================================================
   Layout shell
   ========================================================================== */
.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

header.site-header {
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
  position: sticky;
  top: 0;
  background: rgba(11, 14, 20, 0.92);
  backdrop-filter: blur(6px);
  z-index: 10;
}

.site-header .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  font-family: var(--mono);
  font-size: 15px;
  color: var(--text);
}
.brand .path {
  color: var(--accent);
}

nav.site-nav {
  display: flex;
  gap: 20px;
  font-family: var(--mono);
  font-size: 13px;
}
nav.site-nav a {
  color: var(--text-dim);
  border-bottom: none;
}
nav.site-nav a:hover,
nav.site-nav a.active {
  color: var(--accent);
}

main {
  padding: 56px 0 96px;
}

footer.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 12px;
}
footer.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* ==========================================================================
   Hero / signature element — a request/response pair, not decoration
   ========================================================================== */
.hero {
  padding-bottom: 8px;
}

.hero-eyebrow {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 10px;
}

.hero h1 {
  font-size: clamp(28px, 4vw, 40px);
  margin: 0 0 14px;
}

.hero p.lede {
  color: var(--text-dim);
  max-width: 58ch;
  font-size: 17px;
  margin: 0 0 32px;
}

.wire {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  margin: 0 0 40px;
}
.wire-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
}
.wire pre {
  margin: 0;
  padding: 18px 20px;
  font-size: 13px;
  overflow-x: auto;
  line-height: 1.7;
}
.wire .req  { color: var(--text-dim); }
.wire .hdr-key { color: var(--accent-2); }
.wire .flag { color: var(--danger); }
.wire .note { color: var(--accent); }

/* ==========================================================================
   Sections
   ========================================================================== */
section {
  margin: 56px 0;
}

section > h2 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin: 0 0 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.grid-tools {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 18px 20px;
}
.card h3 {
  font-size: 14px;
  margin: 0 0 8px;
  color: var(--text);
}
.card p {
  margin: 0;
  color: var(--text-dim);
  font-size: 14px;
}
.card .tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent-2);
  margin-top: 10px;
}

/* Writeup list */
.post-list {
  border-top: 1px solid var(--border);
}
.post-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}
.post-row a.title {
  color: var(--text);
  font-size: 16px;
  border-bottom: none;
}
.post-row a.title:hover {
  color: var(--accent);
}
.post-row .meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-dim);
  white-space: nowrap;
}
.post-row .summary {
  color: var(--text-dim);
  font-size: 14px;
  margin: 4px 0 0;
  max-width: 60ch;
}
.post-row .col-left { flex: 1; min-width: 0; }

.empty-note {
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 13px;
  padding: 24px 0;
}

/* Contact */
.contact-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-family: var(--mono);
  font-size: 14px;
}
.contact-list .k { color: var(--text-dim); }

/* ==========================================================================
   Single writeup / post page
   ========================================================================== */
.post-meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 6px;
}
.post-meta .sep { margin: 0 6px; }

article.post h1 {
  font-size: clamp(24px, 3.6vw, 32px);
  margin: 0 0 24px;
}

article.post h2 {
  font-size: 19px;
  margin: 40px 0 14px;
  color: var(--text);
  font-family: var(--sans);
  font-weight: 700;
  text-transform: none;
  letter-spacing: normal;
  border-bottom: none;
  padding-bottom: 0;
}

article.post h3 {
  font-size: 16px;
  margin: 28px 0 10px;
  font-family: var(--sans);
  font-weight: 700;
}

article.post p {
  margin: 0 0 16px;
  max-width: 68ch;
}

article.post pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 16px 18px;
  overflow-x: auto;
  font-size: 13px;
  margin: 0 0 20px;
}

article.post code:not(pre code) {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 5px;
  font-size: 0.9em;
}

article.post ul, article.post ol {
  margin: 0 0 16px;
  padding-left: 22px;
  max-width: 68ch;
}
article.post li { margin-bottom: 6px; }

.severity {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 3px;
  border: 1px solid var(--border);
  color: var(--text-dim);
  margin-right: 6px;
}
.severity.high { color: var(--danger); border-color: var(--danger); }
.severity.medium { color: var(--accent); border-color: var(--accent); }
.severity.info { color: var(--accent-2); border-color: var(--accent-2); }

.back-link {
  display: inline-block;
  margin-bottom: 32px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-dim);
  border-bottom: none;
}
.back-link:hover { color: var(--accent); }

@media (max-width: 560px) {
  .post-row { flex-direction: column; gap: 4px; }
  .post-row .meta { order: -1; }
}