/*------------------------------------*/
/* BLOG STYLES — Instrument Dark      */
/* Syne · DM Sans · JetBrains Mono   */
/*------------------------------------*/

:root {
  --bg-base:        #07101C;
  --bg-surface:     #0C1828;
  --bg-card:        #0F1F30;
  --border:         rgba(56, 189, 248, 0.08);
  --border-bright:  rgba(56, 189, 248, 0.20);
  --accent-sky:     #38BDF8;
  --accent-amber:   #F59E0B;
  --text-primary:   #E8EFF7;
  --text-secondary: rgba(232, 239, 247, 0.60);
  --text-dim:       rgba(232, 239, 247, 0.22);
}

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Base ── */

body.blog-page {
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: 'DM Sans', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Nav ── */

.blog-nav {
  background-color: var(--bg-base);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
}

.blog-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.blog-nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.blog-nav-logo:hover { opacity: 0.82; }

.blog-nav-brand {
  font-family: 'Syne', sans-serif;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}

.blog-nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.blog-nav-links a {
  font-family: 'DM Sans', sans-serif;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: color 0.2s;
}

.blog-nav-links a:hover { color: var(--text-primary); }

.blog-nav-cta {
  background-color: transparent;
  border: 1.5px solid rgba(245, 158, 11, 0.40) !important;
  border-radius: 6px;
  color: var(--accent-amber) !important;
  font-size: 11.5px !important;
  font-weight: 600 !important;
  letter-spacing: 0.08em !important;
  padding: 7px 16px;
  text-transform: uppercase;
  transition: all 0.22s ease !important;
}

.blog-nav-cta:hover {
  background-color: rgba(245, 158, 11, 0.08) !important;
  border-color: var(--accent-amber) !important;
}

/* ── Blog Index ── */

.blog-index {
  padding: 72px 0 100px;
  animation: fadeSlideUp 0.55s ease both;
}

.blog-index-inner {
  max-width: 680px;
  margin: 0 auto;
}

.blog-eyebrow {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--accent-sky);
  opacity: 0.70;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.blog-index-header {
  margin-bottom: 56px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border);
}

.blog-index-header h1 {
  font-family: 'Syne', sans-serif;
  font-size: 52px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  line-height: 1.0;
  margin-bottom: 16px;
}

.blog-index-header p {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.72;
  margin-bottom: 0;
  max-width: 500px;
}

/* ── Post List ── */

.blog-post-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.blog-post-list li {
  list-style: none;
  font-size: inherit;
  line-height: inherit;
}

.blog-post-item {
  border-bottom: 1px solid var(--border);
}

.blog-post-item a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0;
  text-decoration: none;
  transition: opacity 0.2s;
}

.blog-post-item a:hover { opacity: 0.72; }

.blog-post-item h2 {
  font-family: 'Syne', sans-serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin: 0;
  flex: 1;
}

.blog-post-item time {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ── Individual Post ── */

.blog-post {
  padding: 64px 0 100px;
  animation: fadeSlideUp 0.55s ease both;
}

.blog-post-inner {
  max-width: 680px;
  margin: 0 auto;
}

.blog-back-link {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.10em;
  color: var(--accent-sky);
  text-decoration: none;
  text-transform: uppercase;
  opacity: 0.65;
  margin-bottom: 40px;
  transition: opacity 0.2s;
}

.blog-back-link:hover {
  color: var(--accent-sky);
  opacity: 1;
}

.blog-post-header {
  margin-bottom: 48px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--border);
}

.blog-post-header h1 {
  font-family: 'Syne', sans-serif;
  font-size: 44px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  line-height: 1.06;
  margin-bottom: 18px;
}

.blog-post-date {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 0;
}

/* ── Post Body Content ── */

.blog-post-content {
  font-size: 17px;
  line-height: 1.82;
  color: var(--text-secondary);
}

.blog-post-content p {
  margin-bottom: 24px;
}

.blog-post-content h2 {
  font-family: 'Syne', sans-serif;
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.015em;
  margin-top: 48px;
  margin-bottom: 16px;
}

.blog-post-content h3 {
  font-family: 'Syne', sans-serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  margin-top: 36px;
  margin-bottom: 12px;
}

.blog-post-content ul,
.blog-post-content ol {
  padding-left: 24px;
  margin-bottom: 24px;
}

.blog-post-content ul li,
.blog-post-content ol li {
  font-size: 17px;
  line-height: 1.78;
  color: var(--text-secondary);
  margin-bottom: 8px;
  list-style: disc;
}

.blog-post-content ol li {
  list-style: decimal;
}

.blog-post-content a {
  color: var(--accent-sky);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 189, 248, 0.30);
  transition: border-color 0.2s;
}

.blog-post-content a:hover {
  border-color: var(--accent-sky);
}

.blog-post-content code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13.5px;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 7px;
  color: var(--accent-amber);
}

.blog-post-content blockquote {
  border-left: 3px solid var(--accent-sky);
  margin: 32px 0;
  padding: 16px 24px;
  background-color: var(--bg-surface);
  border-radius: 0 8px 8px 0;
}

.blog-post-content blockquote p {
  color: var(--text-primary);
  font-style: italic;
  margin-bottom: 0;
}

/* ── Responsive ── */

@media (max-width: 767px) {
  .blog-nav-brand { display: none; }
  .blog-index-header h1 { font-size: 38px; }
  .blog-post-header h1 { font-size: 30px; }
  .blog-post-item a { flex-direction: column; gap: 6px; }
  .blog-post-item time { align-self: flex-start; }
}