/* ==========================================================================
   Pratham Test Prep Blog — Design tokens
   Institutional navy + amber, built for a law/management exam-prep audience.
   ========================================================================== */
:root {
  --navy: #0C3E6B;
  --navy-deep: #082C4E;
  --navy-tint: rgba(12,62,107,0.06);
  --paper: #F3F5F9;
  --paper-raised: #FFFFFF;
  --amber: #E7A93E;
  --amber-deep: #C98A1E;
  --text: #142438;
  --text-muted: #5B6B80;
  --text-on-navy: #E9EEF5;
  --text-on-navy-muted: #9FB3CC;
  --border: rgba(12,62,107,0.14);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 24px;
  --maxw: 1180px;
  --shadow-card: 0 1px 0 rgba(12,62,107,0.04), 0 12px 26px rgba(12,62,107,0.08);
}

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500..800&family=Public+Sans:wght@400;500;600;700;800&display=swap');

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Public Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 0.4em;
  letter-spacing: -0.01em;
}
p { margin: 0 0 1em; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
:focus-visible { outline: 3px solid var(--amber-deep); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* ---------- Buttons & chips ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 26px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease;
}
.btn-amber { background: var(--amber); color: #2A1B03; }
.btn-amber:hover { transform: translateY(-2px); box-shadow: 0 10px 22px rgba(231,169,62,0.4); }
.btn-navy { background: var(--navy); color: #fff; }
.btn-navy:hover { background: var(--navy-deep); }
.btn-outline { background: transparent; color: var(--navy); border: 1.5px solid var(--border); }
.btn-outline:hover { border-color: var(--navy); }

.pill {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1.5px solid var(--border);
  color: var(--text-muted);
  white-space: nowrap;
}
.pill:hover { border-color: var(--navy); color: var(--navy); }
.pill.active { background: var(--navy); color: #fff; border-color: var(--navy); }
.tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--navy);
  background: var(--navy-tint);
  padding: 5px 11px;
  border-radius: 5px;
}

/* ---------- Header ---------- */
.site-header {
  background: var(--paper-raised);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 88px; gap: 24px;
}
.brand img { height: 42px; width: auto; }

.main-nav { display: flex; align-items: center; gap: 26px; }
.main-nav a {
  font-size: 0.9rem; font-weight: 700; color: var(--text-muted);
  transition: color .15s ease;
}
.main-nav a:hover, .main-nav a.current { color: var(--navy); }
.header-cta { display: flex; align-items: center; gap: 16px; }

@media (max-width: 860px) {
  .main-nav { display: none; }
  .site-header .wrap { height: 76px; }
  .brand img { height: 34px; }
}

/* ---------- Hero (home) ---------- */
.hero {
  background: var(--paper);
  padding: 68px 0 60px;
  border-bottom: 1px solid var(--border);
}
.hero-eyebrow-row {
  display: flex; align-items: center; gap: 10px; margin-bottom: 20px;
  color: var(--amber-deep); font-size: 0.85rem; font-weight: 800; letter-spacing: 0.04em; text-transform: uppercase;
}
.hero-eyebrow-row::before { content: ''; width: 26px; height: 2px; background: var(--amber-deep); display: inline-block; }
.hero h1 {
  font-size: clamp(2.3rem, 4.6vw, 3.6rem);
  max-width: 17ch;
  color: var(--navy-deep);
}
.hero-sub {
  max-width: 58ch;
  font-size: 1.12rem;
  color: var(--text-muted);
  margin: 18px 0 32px;
}
.course-strip { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 4px; }

/* ---------- Section headings ---------- */
.section { padding: 64px 0; }
.section-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 24px; margin-bottom: 36px; flex-wrap: wrap;
}
.section-head h2 { font-size: clamp(1.55rem, 2.8vw, 2rem); max-width: 26ch; color: var(--navy-deep); }
.section-head p { color: var(--text-muted); margin: 0; max-width: 46ch; }

/* ---------- Category filter row ---------- */
.filter-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 40px; }

/* ---------- Featured post ---------- */
.featured-post {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center;
  background: var(--paper-raised);
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: var(--shadow-card);
  margin-bottom: 52px;
  border: 1px solid var(--border);
}
.featured-post .cover { border-radius: var(--radius-md); overflow: hidden; aspect-ratio: 4/3; }
.featured-post .cover img { width: 100%; height: 100%; object-fit: cover; }
.featured-post .body { padding: 10px 26px 10px 4px; }
.featured-post h3 { font-size: clamp(1.4rem, 2.4vw, 1.9rem); margin: 14px 0 12px; color: var(--navy-deep); }
.featured-post .excerpt { color: var(--text-muted); font-size: 1rem; }
.meta-row {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  font-size: 0.84rem; color: var(--text-muted); margin-top: 16px;
}
.meta-row .dot { opacity: 0.5; }

@media (max-width: 780px) {
  .featured-post { grid-template-columns: 1fr; }
  .featured-post .body { padding: 6px 6px 2px; }
}

/* ---------- Post grid ---------- */
.post-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
@media (max-width: 980px) { .post-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .post-grid { grid-template-columns: 1fr; } }

.post-card {
  background: var(--paper-raised);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border);
  display: flex; flex-direction: column;
  transition: transform .18s ease;
}
.post-card:hover { transform: translateY(-4px); }
.post-card .cover { aspect-ratio: 16/10; overflow: hidden; background: var(--navy); }
.post-card .cover img { width: 100%; height: 100%; object-fit: cover; }
.post-card .body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
.post-card h3 { font-size: 1.12rem; margin: 12px 0 8px; color: var(--navy-deep); }
.post-card .excerpt { color: var(--text-muted); font-size: 0.92rem; flex: 1; }

.empty-state { text-align: center; padding: 60px 20px; color: var(--text-muted); background: var(--paper-raised); border-radius: var(--radius-md); border: 1px solid var(--border); }

/* ---------- Pagination ---------- */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 46px; }
.pagination a, .pagination span {
  min-width: 42px; height: 42px; display: flex; align-items: center; justify-content: center;
  border-radius: 50%; font-weight: 700; font-size: 0.9rem; border: 1.5px solid var(--border);
}
.pagination a:hover { border-color: var(--navy); }
.pagination .current { background: var(--navy); color: #fff; border-color: var(--navy); }

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--navy), var(--navy-deep));
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 52px;
  display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap;
}
.cta-band h2 { color: #fff; max-width: 22ch; margin-bottom: 8px; }
.cta-band p { color: var(--text-on-navy-muted); margin: 0; max-width: 40ch; }

/* ---------- Post detail page ---------- */
.post-hero { background: var(--paper); padding: 40px 0 0; border-bottom: 1px solid var(--border); }
.breadcrumb { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 20px; }
.breadcrumb a:hover { color: var(--navy); }
.post-hero h1 { font-size: clamp(1.8rem, 3.6vw, 2.8rem); max-width: 22ch; color: var(--navy-deep); }
.post-hero-meta { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; margin: 20px 0 36px; color: var(--text-muted); font-size: 0.88rem; }
.post-cover { aspect-ratio: 21/9; overflow: hidden; border-radius: var(--radius-md) var(--radius-md) 0 0; margin-top: 10px; }
.post-cover img { width: 100%; height: 100%; object-fit: cover; }

.post-layout { display: grid; grid-template-columns: 1fr 300px; gap: 52px; padding: 52px 0 76px; }
@media (max-width: 900px) { .post-layout { grid-template-columns: 1fr; } }

.post-content { max-width: 70ch; font-size: 1.05rem; }
.post-content h2 { font-size: 1.45rem; margin-top: 1.6em; color: var(--navy-deep); }
.post-content h3 { font-size: 1.18rem; margin-top: 1.4em; color: var(--navy-deep); }
.post-content p { margin-bottom: 1.3em; }
.post-content img { border-radius: var(--radius-sm); margin: 1.4em 0; }
.post-content ul, .post-content ol { padding-left: 1.4em; margin-bottom: 1.3em; }
.post-content li { margin-bottom: 0.5em; }
.post-content a { color: var(--navy); text-decoration: underline; text-underline-offset: 3px; }
.post-content blockquote {
  border-left: 4px solid var(--amber); margin: 1.6em 0; padding: 4px 0 4px 22px;
  font-style: italic; color: var(--text-muted); font-size: 1.1rem;
}

.sidebar-card { background: var(--paper-raised); border-radius: var(--radius-md); padding: 24px; box-shadow: var(--shadow-card); border: 1px solid var(--border); margin-bottom: 22px; }
.sidebar-card h4 { font-size: 1rem; margin-bottom: 14px; color: var(--navy-deep); }
.sidebar-card.navy { background: var(--navy-deep); color: var(--text-on-navy); border: none; }
.sidebar-card.navy h4 { color: #fff; }
.sidebar-card.navy p { color: var(--text-on-navy-muted); font-size: 0.9rem; }
.related-link { display: block; padding: 12px 0; border-top: 1px solid var(--border); font-weight: 600; font-size: 0.9rem; }
.related-link:first-of-type { border-top: none; padding-top: 0; }
.related-link:hover { color: var(--navy); }
.share-row { display: flex; gap: 10px; margin-top: 8px; }
.share-row a { width: 38px; height: 38px; border-radius: 50%; border: 1.5px solid var(--border); display: flex; align-items: center; justify-content: center; font-size: 0.8rem; font-weight: 800; }
.share-row a:hover { background: var(--navy); color: #fff; border-color: var(--navy); }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-deep); color: var(--text-on-navy-muted); padding: 60px 0 26px; margin-top: 60px; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.12); }
.footer-wordmark { font-family: 'Fraunces', serif; font-weight: 800; font-size: 1.3rem; color: #fff; margin-bottom: 14px; letter-spacing: -0.01em; }
.footer-wordmark span { color: var(--amber); }
.footer-top p { max-width: 34ch; font-size: 0.9rem; }
.footer-col h5 { color: #fff; font-size: 0.8rem; letter-spacing: 0.04em; text-transform: uppercase; margin-bottom: 16px; }
.footer-col a { display: block; font-size: 0.88rem; padding: 6px 0; }
.footer-col a:hover { color: var(--amber); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 22px; font-size: 0.8rem; flex-wrap: wrap; gap: 12px; }
@media (max-width: 780px) { .footer-top { grid-template-columns: 1fr; } }