/* Professional baseline with restrained technical accents. */
:root {
  --site-bg: #f7f9fb;
  --site-surface: #ffffff;
  --site-text: #15202b;
  --site-muted: #5c6978;
  --site-border: #d9e2ec;
  --site-accent: #0f8f69;
  --site-accent-soft: #e8f6f1;
  --site-code-bg: #0a111c;
  --site-code-text: #baf7dc;
}

body {
  background:
    repeating-linear-gradient(
      0deg,
      transparent 0,
      transparent 27px,
      rgba(15, 143, 105, 0.018) 28px
    ),
    radial-gradient(circle at 10% -20%, #eaf0f6 0%, transparent 45%),
    radial-gradient(circle at 95% 120%, #edf4f8 0%, transparent 35%),
    var(--site-bg);
  color: var(--site-text);
  font-family: "IBM Plex Sans", "Segoe UI", "Helvetica Neue", sans-serif;
  line-height: 1.65;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: #0f1b2a;
  letter-spacing: 0.01em;
  text-wrap: balance;
}

h1 {
  font-weight: 650;
  border-bottom: 1px solid var(--site-border);
  padding-bottom: 0.35rem;
  margin-bottom: 1rem;
  font-family: "IBM Plex Mono", "Consolas", "Menlo", monospace;
}

h2 {
  font-weight: 620;
  margin-top: 2.3rem;
}

h2::before {
  content: "> ";
  color: var(--site-accent);
}

p,
li {
  color: var(--site-text);
}

a {
  color: var(--site-accent);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.12em;
}

a:hover,
a:focus {
  color: #0a5a54;
  text-shadow: 0 0 0.35px #0f8f69;
}

.navbar {
  border-bottom: 1px solid var(--site-border);
  background-color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(6px);
}

.navbar .navbar-brand {
  font-weight: 630;
  letter-spacing: 0.02em;
  font-family: "IBM Plex Mono", "Consolas", "Menlo", monospace;
  color: #0f1b2a;
  text-shadow: none;
}

.navbar .navbar-brand:hover,
.navbar .navbar-brand:focus {
  color: var(--site-accent);
  text-shadow: none;
  text-decoration: none;
}

.navbar-nav .nav-link {
  font-family: "IBM Plex Mono", "Consolas", "Menlo", monospace;
  font-size: 0.92rem;
  color: #223245;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus {
  color: var(--site-accent);
}

.navbar-nav .nav-link.active {
  color: var(--site-accent);
  font-weight: 600;
  text-shadow: 0 0 0.35px #0f8f69;
}

main.content {
  background: var(--site-surface);
  border: 1px solid var(--site-border);
  border-radius: 12px;
  padding: 1.4rem 1.4rem 1.8rem;
  box-shadow: 0 4px 20px rgba(12, 24, 40, 0.03);
  position: relative;
}

code,
pre code,
.sourceCode {
  font-family: "IBM Plex Mono", "Consolas", "Menlo", monospace;
}

:not(pre) > code {
  background: var(--site-accent-soft);
  color: #08423e;
  border: 1px solid #cbe6e2;
  border-radius: 4px;
  padding: 0.08rem 0.32rem;
  font-size: 0.9em;
}

div.sourceCode,
pre.sourceCode {
  background: var(--site-code-bg);
  color: var(--site-code-text);
  border: 1px solid #1f2f48;
  border-radius: 10px;
  box-shadow: inset 0 0 0 1px rgba(79, 223, 172, 0.08);
}

blockquote {
  border-left: 3px solid var(--site-accent);
  background: #f2f8f7;
  color: #203445;
  padding: 0.5rem 1rem;
}

table {
  border-collapse: separate;
  border-spacing: 0;
}

th,
td {
  border-bottom: 1px solid var(--site-border);
  padding: 0.55rem 0.7rem;
}

th {
  background: #f1f5f9;
  font-weight: 600;
}

img {
  border-radius: 8px;
}

@media (max-width: 768px) {
  main.content {
    padding: 1rem;
    border-radius: 8px;
  }
}