/* ── Global Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: #24292e;
  background: #f6f8fa;
  margin: 0;
}

/* ── Header ──────────────────────────────────────────────────────── */
.site-header {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 60%, #0f3460 100%);
  color: white;
  padding: 0 1.5rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.header-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 1rem 0;
}

.site-branding {
  display: flex;
  flex-direction: column;
}

.site-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
  text-decoration: none;
  letter-spacing: -0.3px;
}

.site-tagline {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.6);
  margin: 0;
}

/* ── Navigation ──────────────────────────────────────────────────── */
.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.site-nav a {
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.35rem 0.75rem;
  border-radius: 20px;
  transition: background 0.2s, color 0.2s;
}

.site-nav a:hover {
  background: rgba(255,255,255,0.15);
  color: white;
}

/* ── Main Content ────────────────────────────────────────────────── */
.page-content {
  padding: 2.5rem 1.5rem;
}

.content-wrapper {
  max-width: 900px;
  margin: 0 auto;
  background: white;
  border-radius: 10px;
  padding: 2.5rem 3rem;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08), 0 4px 16px rgba(0,0,0,0.06);
}

/* ── Typography ──────────────────────────────────────────────────── */
.content-wrapper h1 {
  font-size: 2rem;
  font-weight: 700;
  color: #1a1a2e;
  border-bottom: 3px solid #0f3460;
  padding-bottom: 0.5rem;
  margin-top: 0;
}

.content-wrapper h2 {
  font-size: 1.3rem;
  font-weight: 600;
  color: #1a1a2e;
  margin-top: 2rem;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid #e1e4e8;
}

.content-wrapper h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: #24292e;
  margin-top: 1.5rem;
}

.content-wrapper p {
  color: #444d56;
}

.content-wrapper a {
  color: #0f3460;
  text-decoration: none;
  border-bottom: 1px solid rgba(15,52,96,0.3);
  transition: border-color 0.2s;
}

.content-wrapper a:hover {
  border-bottom-color: #0f3460;
}

.content-wrapper ul, .content-wrapper ol {
  padding-left: 1.5rem;
  color: #444d56;
}

.content-wrapper li {
  margin-bottom: 0.35rem;
}

/* ── Tables ──────────────────────────────────────────────────────── */
.content-wrapper table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 1.5rem 0;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 0 0 1px #e1e4e8;
}

.content-wrapper th {
  background: #1a1a2e;
  color: white;
  text-align: left;
  padding: 0.75rem 1rem;
  font-weight: 600;
}

.content-wrapper td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid #e1e4e8;
  color: #444d56;
}

.content-wrapper tr:last-child td {
  border-bottom: none;
}

.content-wrapper tr:nth-child(even) td {
  background: #f6f8fa;
}

/* ── Horizontal Rules ────────────────────────────────────────────── */
.content-wrapper hr {
  border: none;
  border-top: 1px solid #e1e4e8;
  margin: 2rem 0;
}

/* ── Blockquotes / callouts ──────────────────────────────────────── */
.content-wrapper blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  background: #fff8e1;
  border-left: 4px solid #f0a500;
  border-radius: 0 6px 6px 0;
  color: #5a4a00;
}

/* ── Code ────────────────────────────────────────────────────────── */
.content-wrapper code {
  background: #f6f8fa;
  border: 1px solid #e1e4e8;
  border-radius: 4px;
  padding: 0.15em 0.4em;
  font-size: 0.875em;
}

/* ── Footer ──────────────────────────────────────────────────────── */
.site-footer {
  background: #1a1a2e;
  color: rgba(255,255,255,0.6);
  text-align: center;
  padding: 1.5rem;
  font-size: 0.85rem;
}

.site-footer a {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
}

.site-footer a:hover {
  color: white;
}

.site-footer p {
  margin: 0.35rem 0;
}

/* ── Responsive ──────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .content-wrapper {
    padding: 1.5rem 1.25rem;
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .content-wrapper h1 {
    font-size: 1.5rem;
  }
}