/* ==========================================================================
   Yash | VAporX — matte black, silver text, serif headings
   ========================================================================== */

:root {
  --bg: #0a0a0a;            /* matte black */
  --bg-raised: #111111;     /* cards */
  --bg-elevated: #161616;   /* hover / code */
  --border: #1f1f1f;
  --border-strong: #2a2a2a;
  --text: #d4d4d4;          /* body silver */
  --text-strong: #e8e8e8;   /* headings */
  --text-muted: #8a8a8a;
  --text-faint: #5c5c5c;
  --silver: #c0c0c0;
  --silver-gradient: linear-gradient(180deg, #f5f5f5 0%, #c9c9c9 55%, #8f8f8f 100%);

  --font-serif: "Source Serif 4", "Source Serif Pro", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --measure: 700px;
  --radius: 12px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  background-image: radial-gradient(1200px 600px at 50% -240px, rgba(255,255,255,0.05), transparent 70%);
  background-repeat: no-repeat;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

::selection { background: #3a3a3a; color: #fff; }

.wrap {
  width: 100%;
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 24px;
}

main.wrap { flex: 1; padding-top: 28px; padding-bottom: 96px; }

a {
  color: var(--text-strong);
  text-decoration: underline;
  text-decoration-color: #4a4a4a;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color .2s var(--ease), text-decoration-color .2s var(--ease);
}
a:hover { color: #fff; text-decoration-color: #9a9a9a; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--bg-elevated);
  color: #fff;
  padding: 10px 16px;
  border-radius: 8px;
  z-index: 100;
}
.skip-link:focus { left: 16px; top: 16px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10,10,10,0.72);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 1.02rem;
  letter-spacing: .01em;
  text-decoration: none;
  color: var(--text-strong);
}
.brand:hover { color: #fff; }
.brand-mark {
  display: inline-flex;
  width: 22px;
  height: 22px;
  color: var(--silver);
  flex: none;
}
.brand-mark svg { width: 100%; height: 100%; display: block; }
.site-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}
.site-nav a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: .95rem;
  font-weight: 500;
  transition: color .2s var(--ease);
}
.site-nav a:hover { color: var(--text-strong); }
.site-nav a[aria-current="page"] { color: var(--text-strong); }
.nav-icon { display: inline-flex; }
.icon { width: 18px; height: 18px; display: block; }

/* ---------- Hero ---------- */
.hero {
  padding: 64px 0 40px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 48px;
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .08em;
  color: var(--text-faint);
  margin: 0 0 18px;
  text-transform: uppercase;
}
.hero-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(2.6rem, 7vw, 4rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
  background: var(--silver-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}
.hero-tagline {
  font-size: 1.18rem;
  color: var(--text-muted);
  max-width: 42ch;
  margin: 0;
}

/* ---------- Section label ---------- */
.section-label {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-faint);
  font-weight: 500;
  margin: 0 0 22px;
}

/* ---------- Post list ---------- */
.post-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}
.post-card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 26px;
  transition: border-color .25s var(--ease), background .25s var(--ease), transform .25s var(--ease);
}
.post-card:hover {
  border-color: var(--border-strong);
  background: var(--bg-elevated);
  transform: translateY(-2px);
}
.post-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--text-faint);
  margin-bottom: 10px;
}
.post-meta .dot { color: #3a3a3a; }
.post-card-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.5rem;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--text-strong);
  margin: 0 0 8px;
}
.post-card:hover .post-card-title { color: #fff; }
.post-card-excerpt {
  color: var(--text-muted);
  margin: 0 0 14px;
  font-size: .98rem;
}
.read-more {
  font-size: .85rem;
  color: var(--silver);
  font-weight: 500;
}
.read-more span { transition: margin-left .2s var(--ease); margin-left: 2px; }
.post-card:hover .read-more span { margin-left: 6px; }
.muted { color: var(--text-muted); }

/* ---------- Post / page ---------- */
.post-header { padding: 16px 0 36px; margin-bottom: 20px; border-bottom: 1px solid var(--border); }
.post-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(2rem, 5vw, 2.85rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text-strong);
  margin: 14px 0 0;
}
.post-lede { color: var(--text-muted); font-size: 1.12rem; margin: 16px 0 0; }

/* ---------- Prose ---------- */
.prose { font-size: 1.06rem; }
.prose > * + * { margin-top: 1.35em; }
.prose h2 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.65rem;
  letter-spacing: -0.01em;
  color: var(--text-strong);
  margin-top: 2em;
  line-height: 1.25;
}
.prose h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.3rem;
  color: var(--text-strong);
  margin-top: 1.6em;
}
.prose p, .prose li { color: var(--text); }
.prose a { color: #fff; text-decoration-color: #6a6a6a; }
.prose a:hover { text-decoration-color: #cfcfcf; }
.prose strong { color: var(--text-strong); font-weight: 600; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li { margin-top: .4em; }
.prose img { max-width: 100%; height: auto; border-radius: var(--radius); border: 1px solid var(--border); }
.prose hr { border: 0; border-top: 1px solid var(--border); margin: 2.5em 0; }
.prose blockquote {
  margin: 0;
  padding: 4px 20px;
  border-left: 3px solid var(--border-strong);
  color: var(--text-muted);
  font-style: italic;
}

/* ---------- Code ---------- */
.prose code {
  font-family: var(--font-mono);
  font-size: .86em;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: .12em .4em;
  color: #d8d8d8;
}
.prose pre {
  font-family: var(--font-mono);
  background: #0d0d0d;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 20px 22px;
  overflow-x: auto;
  font-size: .9rem;
  line-height: 1.6;
}
.prose pre code { background: none; border: 0; padding: 0; font-size: inherit; color: #d0d0d0; }

/* Rouge syntax highlighting (muted, silver-leaning) */
.highlight .c, .highlight .cm, .highlight .c1, .highlight .cs { color: #6a6a6a; font-style: italic; }
.highlight .k, .highlight .kd, .highlight .kn, .highlight .kp, .highlight .kr { color: #c7b9ff; }
.highlight .s, .highlight .s1, .highlight .s2, .highlight .sb, .highlight .sd { color: #9fd3a8; }
.highlight .n, .highlight .na, .highlight .nv { color: #d8d8d8; }
.highlight .nf { color: #9ac7e1; }
.highlight .nc, .highlight .nn { color: #e6c98a; }
.highlight .mi, .highlight .mf, .highlight .m { color: #e0a98a; }
.highlight .o, .highlight .ow, .highlight .p { color: #b0b0b0; }
.highlight .gp { color: #6a6a6a; }

/* ---------- Post footer ---------- */
.post-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}
.back-link {
  text-decoration: none;
  color: var(--silver);
  font-size: .95rem;
  font-weight: 500;
}
.back-link:hover { color: #fff; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  background: #080808;
  padding: 40px 0;
}
.footer-inner { text-align: center; }
.footer-tagline { color: var(--text-muted); margin: 0 0 20px; font-size: .98rem; }
.footer-links {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 24px;
  padding: 0;
  margin: 0 0 20px;
  flex-wrap: wrap;
}
.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text-muted);
  font-size: .9rem;
  transition: color .2s var(--ease);
}
.footer-links a:hover { color: var(--text-strong); }
.footer-copy { color: var(--text-faint); font-size: .82rem; margin: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 600px) {
  body { font-size: 16px; }
  .hero { padding: 44px 0 32px; margin-bottom: 36px; }
  .site-nav { gap: 16px; }
  .brand-name { display: none; }
  .post-card { padding: 20px; }
  .post-footer { flex-direction: column; }
}

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