/* ============================================================
   Argus — Platform Engineering / DevOps consulting
   Dark, technical, minimal. Single stylesheet for all pages.
   ============================================================ */
:root {
  --bg: #0a0d13;
  --bg-2: #0e131c;
  --panel: #111826;
  --panel-2: #151d2c;
  --line: #212a3a;
  --line-2: #2c3648;
  --text: #e7ebf2;
  --muted: #8f99ad;
  --muted-2: #6b7488;
  --accent: #46c6e6;      /* argus cyan */
  --accent-2: #7be3a0;    /* signal green */
  --accent-dim: rgba(70, 198, 230, 0.14);
  --maxw: 1080px;
  --radius: 10px;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg { max-width: 100%; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 1.5rem; }
.eyebrow {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.9rem;
}
.muted { color: var(--muted); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 13, 19, 0.78);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--mono);
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--text);
  text-transform: uppercase;
  font-size: 0.95rem;
}
.brand:hover { text-decoration: none; }
.brand svg { display: block; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.6rem;
  font-size: 0.92rem;
}
.nav-links a { color: var(--muted); }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); text-decoration: none; }
.nav-links .btn { color: var(--bg); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 0.7rem 1.3rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.92rem;
  border: 1px solid transparent;
  transition: transform .12s ease, background .2s ease, border-color .2s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #04222b; }
.btn-primary:hover { background: #62d3ef; }
.btn-ghost { border-color: var(--line); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(1100px 500px at 78% -10%, rgba(70,198,230,0.10), transparent 60%),
    radial-gradient(700px 400px at 10% 110%, rgba(123,227,160,0.06), transparent 60%),
    var(--bg);
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(700px 380px at 72% 8%, #000 20%, transparent 75%);
  opacity: 0.28;
  pointer-events: none;
}
.hero .container { position: relative; padding-top: 6rem; padding-bottom: 6rem; }
.hero h1 {
  font-size: clamp(2.1rem, 5.2vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 1.1rem;
  max-width: 18ch;
}
.hero h1 .grad {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lead {
  font-size: clamp(1.05rem, 2vw, 1.28rem);
  color: var(--muted);
  max-width: 60ch;
  margin: 0 0 2rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; }

/* ---------- Sections ---------- */
.section { padding: 5rem 0; border-bottom: 1px solid var(--line); }
.section h2 {
  font-size: clamp(1.6rem, 3.4vw, 2.2rem);
  letter-spacing: -0.01em;
  margin: 0 0 1rem;
}
.section .lead { color: var(--muted); max-width: 62ch; font-size: 1.08rem; }
.section-head { margin-bottom: 2.6rem; }

/* ---------- Card grid ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.card {
  background: var(--panel);
  padding: 1.7rem 1.6rem;
  transition: background .2s ease;
}
.card:hover { background: var(--panel-2); }
.card .idx { font-family: var(--mono); font-size: 0.78rem; color: var(--accent); }
.card h3 { margin: 0.6rem 0 0.55rem; font-size: 1.12rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.96rem; }

/* stat / logo row */
.pill-row { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 2rem; }
.pill {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
  background: var(--bg-2);
}
.pill b { color: var(--text); font-weight: 600; }

/* ---------- Blog list ---------- */
.post-list { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.post-item { background: var(--panel); padding: 1.8rem 1.7rem; display: block; }
.post-item:hover { background: var(--panel-2); text-decoration: none; }
.post-item .meta { font-family: var(--mono); font-size: 0.76rem; color: var(--muted-2); letter-spacing: 0.06em; }
.post-item h3 { margin: 0.5rem 0 0.5rem; font-size: 1.3rem; color: var(--text); }
.post-item p { margin: 0; color: var(--muted); }
.tag { font-family: var(--mono); font-size: 0.72rem; color: var(--accent); border: 1px solid var(--accent-dim); background: var(--accent-dim); border-radius: 5px; padding: 0.12rem 0.5rem; }

/* ---------- Article ---------- */
.article { padding: 3.5rem 0 4.5rem; }
.article .container { max-width: 760px; }
.article-header { margin-bottom: 2.5rem; padding-bottom: 2rem; border-bottom: 1px solid var(--line); }
.article-header .meta { font-family: var(--mono); font-size: 0.8rem; color: var(--muted-2); margin-bottom: 1rem; letter-spacing: 0.05em; }
.article-header h1 { font-size: clamp(1.9rem, 4.4vw, 2.7rem); line-height: 1.12; letter-spacing: -0.02em; margin: 0 0 1rem; }
.article-header .lead { font-size: 1.2rem; color: var(--muted); margin: 0; }
.prose { font-size: 1.06rem; }
.prose > * + * { margin-top: 1.25rem; }
.prose h2 { font-size: 1.5rem; margin-top: 2.6rem; letter-spacing: -0.01em; padding-top: 0.4rem; }
.prose h3 { font-size: 1.18rem; margin-top: 2rem; color: var(--text); }
.prose p, .prose li { color: #cdd4e0; }
.prose strong { color: var(--text); }
.prose ul, .prose ol { padding-left: 1.3rem; }
.prose li { margin-top: 0.4rem; }
.prose a { text-decoration: underline; text-underline-offset: 3px; }
.prose blockquote {
  margin: 1.6rem 0; padding: 0.6rem 1.2rem; border-left: 3px solid var(--accent);
  color: var(--muted); background: var(--bg-2); border-radius: 0 8px 8px 0;
}
.prose code {
  font-family: var(--mono); font-size: 0.86em;
  background: var(--panel-2); border: 1px solid var(--line);
  padding: 0.1rem 0.4rem; border-radius: 5px; color: #d7e6ea;
}
.prose pre {
  background: #0b1119; border: 1px solid var(--line); border-radius: 10px;
  padding: 1.1rem 1.2rem; overflow-x: auto; font-size: 0.86rem; line-height: 1.55;
}
.prose pre code { background: none; border: 0; padding: 0; color: #c8d3e3; }
.prose figcaption { color: var(--muted-2); font-size: 0.85rem; margin-top: 0.5rem; text-align: center; }

/* table */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; }
table.data { border-collapse: collapse; width: 100%; font-size: 0.92rem; }
table.data th, table.data td { text-align: left; padding: 0.7rem 0.95rem; border-bottom: 1px solid var(--line); }
table.data thead th { font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.05em; text-transform: uppercase; color: var(--muted); background: var(--bg-2); }
table.data tbody tr:last-child td { border-bottom: 0; }
table.data td.num { font-family: var(--mono); color: var(--accent-2); }

/* ---------- Contact ---------- */
.contact-card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 2.6rem; text-align: center;
}
.contact-email {
  display: inline-block; margin-top: 1rem;
  font-family: var(--mono); font-size: clamp(1.2rem, 3.5vw, 1.9rem);
  color: var(--accent); letter-spacing: 0.01em;
}

/* ---------- Footer ---------- */
.site-footer {
  padding: 2.5rem 0; color: var(--muted-2); font-size: 0.88rem;
  background: var(--bg-2); border-top: 1px solid var(--line);
}
.site-footer .container { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: center; }
.site-footer a { color: var(--muted); }

/* ---------- Utilities ---------- */
.center { text-align: center; }
.mt-0 { margin-top: 0; }
.stack-lg > * + * { margin-top: 1.4rem; }

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .nav-links { gap: 1rem; font-size: 0.85rem; }
  .nav-links a.hide-sm { display: none; }
  .hero .container { padding-top: 4rem; padding-bottom: 4rem; }
  .section { padding: 3.5rem 0; }
  .contact-card { padding: 1.8rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn:hover { transform: none; }
}