/* ============================================
   SHRUTI NARMETI – Blogs Stylesheet
   (matches shrutinarmeti.github.io style)
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  --primary: #1a3a5c;
  --accent: #2e80ce;
  --accent-light: #5aa8e6;
  --bg: #f7f9fc;
  --white: #ffffff;
  --text: #2d3748;
  --text-muted: #718096;
  --border: #e2e8f0;
  --card-bg: #ffffff;
  --section-alt: #eef4fb;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  --transition: 0.3s ease;
  --max-width: 1100px;
  --content-width: 860px;
  --font-sans: 'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'Fira Code', 'Cascadia Code', monospace;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
}

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-light); }

ul { list-style: none; }

/* ---------- Layout helpers ---------- */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* ---------- Navigation ---------- */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
nav.scrolled { box-shadow: 0 2px 16px rgba(0,0,0,0.08); }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.nav-logo {
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--primary);
  letter-spacing: -0.5px;
}
.nav-logo:hover { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 28px;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  position: relative;
  padding-bottom: 2px;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }
.nav-links a:hover, .nav-links a.active { color: var(--accent); }

/* Hamburger */
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 4px; }
.nav-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--primary);
  transition: all var(--transition);
  border-radius: 2px;
}

/* ---------- Hero (blogs listing page) ---------- */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, #1e5291 60%, var(--accent) 100%);
  color: var(--white);
  padding: 100px 0 60px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 0.75rem;
  color: var(--white);
}

.hero p {
  font-size: 1.05rem;
  max-width: 500px;
  margin: 0 auto;
  opacity: 0.85;
}

/* ---------- Blog listing section ---------- */
.blog-section {
  padding: 48px 0 80px;
}

/* ---------- Blog List Grid ---------- */
.blog-grid {
  display: grid;
  gap: 1.25rem;
  max-width: var(--content-width);
  margin: 0 auto;
}

.blog-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem 1.8rem;
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.blog-card-meta time {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.blog-card h2 {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.35;
}

.blog-card h2 a {
  color: var(--text);
  transition: color var(--transition);
}

.blog-card h2 a:hover {
  color: var(--accent);
}

.blog-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tags {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-top: 0.25rem;
}

.tag {
  background: var(--section-alt);
  color: var(--accent);
  border: 1px solid #c3ddf5;
  font-size: 0.78rem;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 50px;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent);
  margin-top: 0.25rem;
  align-self: flex-start;
}

.read-more:hover {
  color: var(--accent-light);
  gap: 0.5rem;
}

/* ---------- Blog Post Page ---------- */
.post-header {
  background: linear-gradient(135deg, var(--primary) 0%, #1e5291 60%, var(--accent) 100%);
  color: var(--white);
  padding: 100px 0 2.5rem;
  margin-bottom: 0;
}

.post-header .post-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.75);
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.post-header h1 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.25;
  margin-bottom: 1rem;
  color: var(--white);
}

.post-header .description {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.8);
  max-width: 640px;
}

.post-header .tags .tag {
  background: rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.9);
  border-color: rgba(255,255,255,0.3);
}

/* ---------- Post Content ---------- */
.post-content {
  padding: 2.5rem 0 4rem;
  background: var(--bg);
}

.prose {
  max-width: 680px;
}

.prose h2 {
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 2.5rem 0 0.75rem;
  color: var(--primary);
}

.prose h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 2rem 0 0.5rem;
  color: var(--primary);
}

.prose p {
  color: var(--text-muted);
  margin-bottom: 1.2rem;
  font-size: 1rem;
}

.prose strong {
  color: var(--text);
  font-weight: 600;
}

.prose ul, .prose ol {
  padding-left: 1.5rem;
  margin-bottom: 1.2rem;
  color: var(--text-muted);
}

.prose li {
  margin-bottom: 0.4rem;
}

.prose pre {
  background: #1e2a3a;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.2rem 1.4rem;
  overflow-x: auto;
  margin: 1.5rem 0;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.65;
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--section-alt);
  color: var(--accent);
  padding: 0.1em 0.4em;
  border-radius: 4px;
}

.prose pre code {
  background: none;
  color: #e2e8f0;
  padding: 0;
  font-size: inherit;
}

.prose blockquote {
  border-left: 3px solid var(--accent);
  padding: 0.75rem 1.25rem;
  margin: 1.5rem 0;
  background: var(--section-alt);
  border-radius: 0 8px 8px 0;
  font-style: italic;
  color: var(--text-muted);
}

.prose hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5rem 0;
}

.prose a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- Post Navigation ---------- */
.post-nav {
  padding: 1.5rem 0 3rem;
  border-top: 1px solid var(--border);
}

.post-nav a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: color var(--transition), border-color var(--transition);
}

.post-nav a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ---------- Footer ---------- */
footer {
  background: #0f2540;
  color: rgba(255,255,255,0.5);
  text-align: center;
  padding: 28px 24px;
  font-size: 0.82rem;
}
footer a { color: rgba(255,255,255,0.75); }
footer a:hover { color: var(--white); }

/* ---------- Tables ---------- */
.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.75rem 0;
  font-size: 0.92rem;
  overflow-x: auto;
  display: block;
}

.prose thead {
  background: var(--section-alt);
}

.prose th {
  text-align: left;
  padding: 0.65rem 1rem;
  font-weight: 600;
  color: var(--primary);
  border-bottom: 2px solid var(--accent);
  white-space: nowrap;
}

.prose td {
  padding: 0.6rem 1rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

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

.prose tbody tr:hover {
  background: var(--section-alt);
}

/* ---------- Mermaid Diagrams ---------- */
.prose .mermaid {
  background: var(--section-alt);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem 1rem;
  margin: 2rem 0;
  overflow-x: auto;
  text-align: center;
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .hero { padding: 90px 0 48px; }
  .post-header { padding: 90px 0 2rem; }
}