/* ============================================================
   STUDY GRAM EDUCATION — Blog Pages Stylesheet
   (listing page + individual article pages)
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy:   #1a2b4a;
  --blue:   #1d4f8a;
  --teal:   #1a9c68;
  --text:   #4a5568;
  --light:  #f4f6fb;
  --border: #e4e8f4;
  --radius: 10px;
  --shadow: 0 4px 20px rgba(0,0,0,.08);
  --shadow-md: 0 8px 36px rgba(0,0,0,.14);
  --trans:  .22s ease;
}

body {
  font-family: 'Open Sans', 'Segoe UI', Arial, sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.6;
}

a { text-decoration: none; color: inherit; }

img { max-width: 100%; height: auto; display: block; }

/* ── Header ─────────────────────────────────────────────────── */
.blog-header {
  background: var(--navy);
  padding: 14px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(0,0,0,.25);
}

.blog-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.blog-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.blog-logo img {
  height: 42px;
  width: auto;
}

.blog-logo-text {
  color: #fff;
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  font-size: .88rem;
  border-left: 2px solid var(--teal);
  padding-left: 10px;
  line-height: 1.3;
}

.blog-logo-text small {
  display: block;
  font-weight: 400;
  font-size: .72rem;
  color: #8da6c5;
}

.blog-back {
  color: #a8c4e0;
  font-size: .83rem;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color var(--trans);
}

.blog-back:hover { color: var(--teal); }

/* ── Hero ───────────────────────────────────────────────────── */
.blog-hero {
  padding: 72px 24px 56px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.blog-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.18);
  pointer-events: none;
}

.blog-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 780px;
  margin: 0 auto;
}

.blog-hero-cat {
  display: inline-block;
  background: rgba(255,255,255,.18);
  border: 1px solid rgba(255,255,255,.35);
  color: #fff;
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .8px;
  padding: 5px 14px;
  border-radius: 50px;
  margin-bottom: 18px;
}

.blog-hero h1 {
  font-family: 'Poppins', sans-serif;
  font-size: clamp(1.5rem, 4vw, 2.3rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 18px;
}

.blog-hero-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  color: rgba(255,255,255,.82);
  font-size: .82rem;
}

.blog-hero-meta i {
  margin-right: 5px;
  opacity: .7;
}

/* ── Listing page hero (different background) ───────────────── */
.blog-listing-hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--blue) 100%);
  padding: 64px 24px 52px;
  text-align: center;
  color: #fff;
}

.blog-listing-hero h1 {
  font-family: 'Poppins', sans-serif;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 10px;
}

.blog-listing-hero p {
  color: #a8c4e0;
  font-size: .93rem;
  max-width: 540px;
  margin: 0 auto;
}

/* ── Blog Listing Grid ──────────────────────────────────────── */
.blog-listing-section {
  background: var(--light);
  padding: 72px 0 88px;
}

.blog-listing-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.blog-grid-full {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.bl-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--trans);
  display: flex;
  flex-direction: column;
}

.bl-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.bl-card-img {
  display: block;
  height: 210px;
  position: relative;
  overflow: hidden;
}

.bl-card-img-1 { background: linear-gradient(135deg,#1d4f8a,#1a9c68); }
.bl-card-img-2 { background: linear-gradient(135deg,#2563c4,#06b6d4); }
.bl-card-img-3 { background: linear-gradient(135deg,#7c3aed,#1a9c68); }

.bl-card-img .bl-card-icon {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  color: rgba(255,255,255,.22);
}

.bl-cat {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(255,255,255,.9);
  color: var(--navy);
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  padding: 5px 12px;
  border-radius: 50px;
}

.bl-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.bl-meta {
  display: flex;
  gap: 14px;
  font-size: .76rem;
  color: #8fa3bc;
  margin-bottom: 12px;
}

.bl-meta i { color: var(--teal); margin-right: 3px; }

.bl-card-body h3 {
  font-family: 'Poppins', sans-serif;
  font-size: .98rem;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.4;
  margin-bottom: 10px;
}

.bl-card-body h3 a { color: inherit; transition: color var(--trans); }
.bl-card-body h3 a:hover { color: var(--teal); }

.bl-card-body p {
  font-size: .86rem;
  color: var(--text);
  line-height: 1.75;
  margin-bottom: 20px;
  flex: 1;
}

.bl-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .85rem;
  font-weight: 700;
  color: var(--teal);
  transition: gap var(--trans);
  align-self: flex-start;
}

.bl-more:hover { gap: 10px; }

/* ── Article Layout ─────────────────────────────────────────── */
.article-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 56px 24px 88px;
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 52px;
  align-items: start;
}

/* Article body */
.article-body {
  font-size: .95rem;
  line-height: 1.9;
  color: var(--text);
}

.article-body h2 {
  font-family: 'Poppins', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--navy);
  margin: 40px 0 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
}

.article-body h3 {
  font-family: 'Poppins', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
  margin: 28px 0 10px;
}

.article-body p {
  margin-bottom: 18px;
}

.article-body ul,
.article-body ol {
  padding-left: 22px;
  margin-bottom: 18px;
}

.article-body ul li,
.article-body ol li {
  margin-bottom: 6px;
  line-height: 1.8;
}

.article-body a {
  color: var(--teal);
}

.article-body a:hover {
  text-decoration: underline;
}

.article-body strong {
  color: var(--navy);
  font-weight: 600;
}

.article-body blockquote {
  margin: 28px 0;
  padding: 18px 22px;
  border-left: 4px solid var(--teal);
  background: var(--light);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  color: #5a6882;
}

.article-body blockquote cite {
  display: block;
  font-style: normal;
  font-size: .82rem;
  color: #8fa3bc;
  margin-top: 8px;
}

.article-key-points {
  background: linear-gradient(135deg, rgba(26,156,104,.06), rgba(29,79,138,.06));
  border: 1px solid rgba(26,156,104,.2);
  border-radius: var(--radius);
  padding: 22px 26px;
  margin: 28px 0;
}

.article-key-points h4 {
  font-family: 'Poppins', sans-serif;
  font-size: .82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--teal);
  margin-bottom: 14px;
}

.article-key-points ul {
  padding-left: 0;
  list-style: none;
}

.article-key-points ul li {
  padding: 5px 0 5px 26px;
  position: relative;
  font-size: .88rem;
  color: var(--navy);
  font-weight: 500;
}

.article-key-points ul li::before {
  content: '\f00c';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  color: var(--teal);
  font-size: .7rem;
  position: absolute;
  left: 0;
  top: 7px;
}

/* Article tags & share */
.article-footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 44px;
  padding-top: 22px;
  border-top: 2px solid var(--border);
}

.article-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.article-tag {
  background: var(--light);
  border: 1px solid var(--border);
  color: var(--navy);
  font-size: .75rem;
  font-weight: 600;
  padding: 5px 13px;
  border-radius: 50px;
  transition: all var(--trans);
}

.article-tag:hover {
  background: var(--teal);
  color: #fff;
  border-color: var(--teal);
}

.article-share {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .8rem;
  color: #8fa3bc;
}

.article-share a {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--navy);
  font-size: .8rem;
  transition: all var(--trans);
}

.article-share a:hover {
  background: var(--navy);
  color: #fff;
  border-color: var(--navy);
}

/* Sidebar */
.article-sidebar {
  position: sticky;
  top: 88px;
}

.sidebar-card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  margin-bottom: 24px;
}

.sidebar-card-head {
  background: var(--navy);
  padding: 14px 18px;
}

.sidebar-card-head h4 {
  font-family: 'Poppins', sans-serif;
  font-size: .82rem;
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: .05em;
}

.sidebar-card-body {
  padding: 18px;
}

/* Related articles in sidebar */
.related-item {
  display: flex;
  gap: 13px;
  align-items: flex-start;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.related-item:last-child { border-bottom: none; }

.related-img {
  width: 54px;
  height: 54px;
  border-radius: 8px;
  flex-shrink: 0;
}

.related-img-1 { background: linear-gradient(135deg,#1d4f8a,#1a9c68); }
.related-img-2 { background: linear-gradient(135deg,#2563c4,#06b6d4); }
.related-img-3 { background: linear-gradient(135deg,#7c3aed,#1a9c68); }

.related-text p {
  font-size: .76rem;
  color: #8fa3bc;
  margin-bottom: 4px;
}

.related-text a {
  font-size: .83rem;
  font-weight: 600;
  color: var(--navy);
  line-height: 1.35;
  transition: color var(--trans);
}

.related-text a:hover { color: var(--teal); }

/* CTA sidebar card */
.sidebar-cta {
  background: linear-gradient(135deg, var(--navy), var(--blue));
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  color: #fff;
  margin-bottom: 24px;
}

.sidebar-cta h4 {
  font-family: 'Poppins', sans-serif;
  font-size: .95rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.sidebar-cta p {
  font-size: .82rem;
  color: #a8c4e0;
  line-height: 1.65;
  margin-bottom: 18px;
}

.sidebar-cta a {
  display: inline-block;
  background: var(--teal);
  color: #fff;
  font-family: 'Poppins', sans-serif;
  font-size: .82rem;
  font-weight: 700;
  padding: 10px 22px;
  border-radius: 50px;
  transition: background var(--trans);
}

.sidebar-cta a:hover { background: #158054; }

/* Author card */
.sidebar-author {
  display: flex;
  align-items: center;
  gap: 14px;
}

.author-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--teal));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: rgba(255,255,255,.7);
  font-size: 1.3rem;
}

.author-info p {
  font-size: .78rem;
  color: #8fa3bc;
  margin-bottom: 2px;
}

.author-info strong {
  font-size: .88rem;
  color: var(--navy);
  font-weight: 700;
  display: block;
}

/* ── Blog Footer ─────────────────────────────────────────────── */
.blog-footer {
  background: #0f1e36;
  color: #5c7095;
  text-align: center;
  padding: 28px 24px;
  font-size: .82rem;
}

.blog-footer p + p { margin-top: 8px; }

.blog-footer a {
  color: var(--teal);
}

.blog-footer a:hover { text-decoration: underline; }

.blog-footer .footer-links {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 8px;
  font-size: .78rem;
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 960px) {
  .article-wrap {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    position: static;
  }
  .blog-grid-full {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .blog-grid-full {
    grid-template-columns: 1fr;
  }
  .article-wrap {
    padding: 36px 16px 60px;
  }
  .blog-hero {
    padding: 52px 16px 40px;
  }
}