:root {
  --clr-bg: #ffffff;
  --clr-surface: #ffffff;
  --clr-card: #ffffff;
  --clr-border: #e2e8f0;
  --clr-accent: #1358d8;
  --clr-accent-light: #eff6ff;
  --clr-muted: #121212;
  --clr-text: #ffffff;
  --clr-heading: #ffffff;
  --clr-footer: #0f172a;
  --clr-sub-heading: #000;
  --clr-deep-blue: #002D72;
  --blue-deep:   #002D72;
  --blue-mid:    #0047AB;
  --blue-bright: #1565C0;
  --font-mono: 'Space Mono', monospace;
  --font-body: 'DM Sans', sans-serif;
  --radius: 12px;
  --transition: 0.22s cubic-bezier(0.4,0,0.2,1);
  --shadow-sm: 0 2px 20px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.10);
  --shadow-lg: 0 12px 40px rgba(37,99,235,0.13);
}

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

body {
  background: var(--clr-bg);
  color: var(--clr-text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
}

/* ══ NAVBAR ══ */
.navbar {
  background: var(--clr-deep-blue) !important;
  backdrop-filter: blur(12px);
  padding: 0.7rem 0;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}
.navbar-brand {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--clr-txt) !important;
  letter-spacing: -0.5px;
  text-decoration: none;
}
.navbar-toggler {
  padding: 0.4rem 0.6rem;
}
.navbar-toggler:focus { box-shadow: 0 0 0 3px rgba(37,99,235,0.2); outline: none; }
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='white' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
}
.navbar-collapse .nav-link {
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--clr-text) !important;
  padding: 0.4rem 0.9rem !important;
  border-radius: 7px;
  transition: color var(--transition), background var(--transition);
}
.navbar-collapse .nav-link:hover,
.navbar-collapse .nav-link.active { color: var(--clr-accent) !important; background: var(--clr-accent-light); }
.btn-nav {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  background: var(--clr-accent);
  color: #fff !important;
  border: none;
  padding: 0.48rem 1.2rem;
  border-radius: 7px;
  text-decoration: none;
  transition: background var(--transition), transform var(--transition);
  display: inline-block;
}
.btn-nav:hover { background: #1d4ed8; transform: translateY(-1px); }

/* ══ OFFCANVAS POPUP MENU ══ */
.offcanvas { max-width: 290px; border-right: 1px solid var(--clr-border); }
.offcanvas-header {
  background: var(--clr-accent);
  padding: 1.2rem 1.25rem;
  backdrop-filter: blur(12px);
}
.offcanvas-title {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.2rem;
  color: #fff;
}
.offcanvas-header .btn-close { filter: invert(1) brightness(2); opacity: 0.9; }
.offcanvas-body { padding: 1.25rem; background: #fff; }
.offcanvas-body .nav-link {
  font-size: 0.975rem;
  font-weight: 500;
  color: #000 !important;
  padding: 0.72rem 1rem !important;
  border-radius: 8px;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  transition: background var(--transition), color var(--transition);
  text-decoration: none;
}
.offcanvas-body .nav-link i { font-size: 1rem; color: var(--clr-accent); }
.offcanvas-body .nav-link:hover,
.offcanvas-body .nav-link.active { background: var(--clr-accent-light); color: var(--clr-accent) !important; }
.offcanvas-body hr { border-color: var(--clr-border); margin: 0.75rem 0; }
.btn-nav-full {
  display: block;
  width: 100%;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  background: var(--clr-accent);
  color: #fff;
  border: none;
  padding: 0.75rem;
  border-radius: 8px;
  margin-top: 0.75rem;
  text-decoration: none;
  transition: background var(--transition);
}
.btn-nav-full:hover { background: #1d4ed8; color: #fff; }

/* ══ JUMBOTRON ══ */
.jumbotron-section {
  position: relative;
  padding: 40px 0 20px 0;
  text-align: center;
  background: linear-gradient(135deg, var(--blue-deep) 0%, var(--blue-mid) 55%, var(--blue-bright) 100%);
  border-bottom: 1px solid var(--clr-border);
  overflow: hidden;
}
.jumbotron-section::before {
  content: '';
  position: absolute;
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(37,99,235,0.07) 0%, transparent 70%);
  top: -200px; left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
}
.jumbotron-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--clr-accent);
  background: var(--clr-accent-light);
  border: 1px solid rgba(37,99,235,0.2);
  border-radius: 99px;
  padding: 0.3rem 1rem;
  margin-bottom: 1.25rem;
}
.jumbotron-section h1 {
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: 0px;
  line-height: 1.15;
  color: var(--clr-heading);
}
.jumbotron-section h1 em { font-style: normal; color: var(--clr-accent); }
.jumbotron-section p.lead {
  font-size: 1rem;
  color: var(--clr-text);
  margin: 20px auto;
}
.btn-primary-cta {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  background: var(--clr-accent);
  color: #fff;
  border: none;
  padding: 0.8rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  transition: background var(--transition), transform var(--transition);
  display: inline-block;
}
.btn-primary-cta:hover { background: #1d4ed8; transform: translateY(-2px); color: #fff; }
.btn-ghost {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  background: #fff;
  color: var(--clr-text);
  border: 1.5px solid var(--clr-border);
  padding: 0.8rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  transition: border-color var(--transition), color var(--transition);
  display: inline-block;
}
.btn-ghost:hover { border-color: var(--clr-accent); color: var(--clr-accent); }

/* ══ SECTION LABELS ══ */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 0.4rem;
}
.section-title {
  font-family: var(--font-mono);
  //font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 400;
  color: var(--clr-sub-heading);
  letter-spacing: -0.5px;
}
.section-subtitle { color: var(--clr-muted); font-size: 0.95rem; margin-top: 0.5rem; }

/* ══ STATS ══ */
.stats-section {
  padding: 60px 0;
  background: #fff;
  border-bottom: 1px solid var(--clr-border);
}
.stat-item { text-align: center; padding: 0.75rem 1rem; }
.stat-number {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--clr-accent);
  line-height: 1;
}
.stat-label { color: var(--clr-muted); font-size: 0.875rem; margin-top: 0.4rem; }

/* ══ LANGUAGE CARDS ══ */
.cards-section { padding: 40px 0; background: var(--clr-bg); }
.lang-card {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.lang-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: var(--clr-accent); }
.card-header-img { position: relative; height: 120px; overflow: hidden; }
.card-header-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: brightness(0.5) saturate(0.85);
  transition: filter var(--transition), transform var(--transition);
}
.lang-card:hover .card-header-img img { filter: brightness(0.62) saturate(1.1); transform: scale(1.04); }
.card-lang-title { position: absolute; inset: 0; display: flex; align-items: center; padding: 1rem 1.2rem; }
.lang-icon {
  width: 32px; height: 32px;
  border-radius: 7px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  margin-right: 0.55rem;
  flex-shrink: 0;
}
.lang-badge {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  text-shadow: 0 1px 6px rgba(0,0,0,0.7);
  text-decoration: none;
}
.card-body-links { padding: 1rem 1.2rem 1.2rem; display: flex; flex-direction: column; flex: 1; }
.link-list { list-style: none; padding: 0; margin: 0; flex: 1; }
.link-list li { border-bottom: 1px solid var(--clr-border); }
.link-list li:last-child { border-bottom: none; }
.link-list a {
  display: flex; align-items: center; gap: 0.4rem;
  padding: 0.5rem 0;
  color: var(--clr-muted);
  font-size: 0.875rem; font-weight: 500;
  text-decoration: none;
  transition: color var(--transition), gap var(--transition);
}
.link-list a i { font-size: 0.7rem; }
.link-list a:hover { color: var(--clr-accent); gap: 0.65rem; }
.card-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.67rem;
  padding: 0.2rem 0.55rem;
  border-radius: 5px;
  margin-top: 0.9rem;
}

/* ══ FEATURES ══ */
.features-section {
  padding: 40px 0;
  background: #fff;
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
}
.feature-item {
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 1.75rem; height: 100%;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.feature-item:hover { border-color: var(--clr-accent); transform: translateY(-3px); box-shadow: var(--shadow-md); }
.feature-icon {
  width: 48px; height: 48px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.35rem; margin-bottom: 1rem;
  background: var(--clr-accent-light); color: var(--clr-accent);
}
.feature-title { font-family: var(--font-mono); font-weight: 700; color: var(--clr-muted); margin-bottom: 0.5rem; font-size: 1rem; }
.feature-desc { color: var(--clr-muted); font-size: 0.875rem; line-height: 1.65; }

/* ══ TESTIMONIALS ══ */
.testimonials-section { padding: 40px 0; background: var(--clr-bg); }
.testimonial-card {
  background: #fff;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 1.75rem; height: 100%;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.testimonial-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.testimonial-quote { font-family: var(--font-mono); font-size: 2.5rem; color: var(--clr-accent); line-height: 1; margin-bottom: 0.75rem; }
.testimonial-text { color: var(--clr-muted); font-size: 0.9rem; line-height: 1.65; }
.testimonial-author { display: flex; align-items: center; gap: 0.75rem; margin-top: 1.25rem; }
.author-avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: linear-gradient(135deg, var(--clr-accent), #60a5fa);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-weight: 700; font-size: 0.78rem;
  color: #fff; flex-shrink: 0;
}
.author-name { font-weight: 600; font-size: 0.875rem; color: var(--clr-muted); }
.author-role { color: var(--clr-muted); font-size: 0.78rem; }

/* ══ NEWSLETTER ══ */
.newsletter-section { padding: 40px 0; background: linear-gradient(135deg, var(--blue-deep) 0%, var(--blue-mid) 55%, var(--blue-bright) 100%);}
.newsletter-box { max-width: 560px; margin: 0 auto; text-align: center; }
.newsletter-box .section-label { color: rgba(255,255,255,0.7); }
.newsletter-box .section-title { color: #fff; }
.newsletter-box p { color: rgba(255,255,255,0.8); font-size: 0.9rem; margin: 20px auto; }
.input-wrap {
  background: #fff;
  border-radius: 10px;
  padding: 5px;
  display: flex; gap: 5px;
}
.input-wrap input[type="email"] {
  flex: 1; border: none; outline: none;
  padding: 0.65rem 1rem;
  font-size: 0.9rem; color: var(--clr-text);
  background: transparent; font-family: var(--font-body);
}
.input-wrap input::placeholder { color: var(--clr-muted); }
.btn-subscribe {
  background: var(--clr-accent); color: #fff;
  font-family: var(--font-mono); font-weight: 700; font-size: 0.82rem;
  border: none; 
  padding: 0.65rem 1.4rem; 
  border-radius: 7px;
  cursor: pointer; transition: background var(--transition); white-space: nowrap;
}
.btn-subscribe:hover { background: #1d4ed8; }
.fine-print { color: rgba(255,255,255,0.6); font-size: 0.75rem; margin-top: 0.85rem; }

/* ══ FOOTER ══ */
footer { background: var(--clr-footer); padding: 60px 0 30px; }
.footer-brand { font-family: var(--font-mono); font-weight: 700; font-size: 1.3rem; color: #1358d8; }
.footer-brand span { color: #121212; }
.footer-tagline { color: #94a3b8; font-size: 0.875rem; margin-top: 0.5rem; }
.footer-heading { font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 1.5px; color: #94a3b8; margin-bottom: 1rem; }
footer ul { list-style: none; padding: 0; margin: 0; }
footer ul li + li { margin-top: 0.5rem; }
footer ul a { color: #94a3b8; text-decoration: none; font-size: 0.875rem; transition: color var(--transition); }
footer ul a:hover { color: #60a5fa; }
.footer-social a {
  width: 36px; height: 36px; border-radius: 8px;
  border: 1px solid #334155;
  display: inline-flex; align-items: center; justify-content: center;
  color: #94a3b8; font-size: 1rem; text-decoration: none;
  margin-right: 0.5rem;
  transition: color var(--transition), border-color var(--transition);
}
.footer-social a:hover { color: #60a5fa; border-color: #60a5fa; }
.footer-divider { border-color: #1e293b; margin: 2rem 0 1.5rem; }
.footer-bottom { color: #475569; font-size: 0.8rem; }


/*==Blog Layout == */
.post-meta-bar {
  display: flex; 
  align-items: center; 
  justify-content: center;
  flex-wrap: wrap; gap: 1rem;
  font-size: 0.825rem; 
  color: var(--clr-text);
}
.post-meta-bar .meta-item { display: flex; align-items: center; gap: 0.35rem; }
.post-meta-bar .tag-chip {
  font-family: var(--font-mono); font-size: 0.68rem;
  background: var(--clr-accent-light); color: var(--clr-accent);
  border: 1px solid rgba(37,99,235,0.2);
  border-radius: 99px; padding: 0.2rem 0.7rem;
}

.tag-chip a {
  color: var(--clr-accent);
  text-decoration: none;
}

/* ══ LAYOUT ══ */
.blog-layout { padding: 56px 0 80px; }
.post-col { min-width: 0; }
.sidebar-col { min-width: 0; }

/* ══ Q&A ARTICLE ══ */
.qa-item {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  margin-bottom: 1.75rem;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}
.qa-item:hover { box-shadow: var(--shadow-md); }

/* Question header */
.qa-question {
  display: flex; align-items: flex-start; gap: 1rem;
  padding: 1.4rem 1.5rem;
  border-bottom: 1px solid var(--clr-border);
  background: #fafbfd;
}
.q-badge {
  flex-shrink: 0;
  width: 32px; height: 32px; border-radius: 8px;
  background: var(--clr-accent); color: #fff;
  font-family: var(--font-mono); font-size: 0.78rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  margin-top: 1px;
}
.qa-question h2 {
  font-family: var(--font-mono);
  font-size: 1rem; 
  font-weight: 500;
  color: var(--clr-muted);
  line-height: 1.4; 
  margin: 0;
}

.qa-question h2 a {
  text-decoration:none;
  color: var(--clr-muted);
}

.q-number {
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--clr-muted); letter-spacing: 1px;
  text-transform: uppercase; margin-bottom: 0.2rem;
}

/* Answer area */
.qa-answer { padding: 1.4rem 1.5rem; }

/* ── Plain text answer ── */
.answer-text {
  color: var(--clr-muted);
  font-size: 0.95rem;
  line-height: 1.75;
}
.answer-text p + p { margin-top: 0.75rem; }
.answer-text strong { color: var(--clr-muted); }

/* ── Multiple choice answer ── */
.mc-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.6rem; }
.mc-option {
  display: flex; align-items: flex-start; gap: 0.75rem;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--clr-border);
  border-radius: 9px;
  font-size: 0.9rem;
  cursor: default;
  transition: border-color var(--transition), background var(--transition);
}
.mc-option.correct {
  border-color: #16a34a;
  background: #f0fdf4;
}
.mc-option.wrong {
  border-color: #dc2626;
  background: #fef2f2;
}
.mc-option.neutral:hover {
  border-color: var(--clr-accent);
  background: var(--clr-accent-light);
}
.mc-letter {
  flex-shrink: 0;
  width: 26px; height: 26px; border-radius: 6px;
  font-family: var(--font-mono); font-size: 0.75rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.correct .mc-letter { background: #16a34a; color: #fff; }
.wrong   .mc-letter { background: #dc2626; color: #fff; }
.neutral .mc-letter { background: var(--clr-border); color: var(--clr-muted); }
.mc-text { flex: 1; line-height: 1.5; color: var(--clr-muted); }
.mc-icon { margin-left: auto; font-size: 1rem; flex-shrink: 0; }
.correct .mc-icon { color: #16a34a; }
.wrong   .mc-icon { color: #dc2626; }
.mc-explanation {
  margin-top: 0.9rem;
  padding: 0.75rem 1rem;
  background: var(--clr-accent-light);
  border-left: 3px solid var(--clr-accent);
  border-radius: 0 8px 8px 0;
  font-size: 0.875rem; color: var(--clr-muted);
  line-height: 1.6;
}
.mc-explanation i { color: var(--clr-accent); margin-right: 0.4rem; }

/* ── Code block answer ── */
.code-block-wrap {
  border: 1px solid var(--clr-border);
  border-radius: 10px;
  overflow: hidden;
}
.code-toolbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.55rem 1rem;
  background: #f1f5f9;
  border-bottom: 1px solid var(--clr-border);
}
.lang-tabs { display: flex; gap: 0.25rem; }
.lang-tab {
  font-family: var(--font-mono); font-size: 0.72rem; font-weight: 700;
  padding: 0.25rem 0.7rem; border-radius: 5px; border: 1px solid transparent;
  cursor: pointer; color: var(--clr-muted);
  background: transparent;
  transition: all var(--transition);
}
.lang-tab.active {
  background: var(--clr-accent); color: #fff; border-color: var(--clr-accent);
}
.lang-tab:hover:not(.active) { background: var(--clr-border); color: var(--clr-text); }
.copy-btn {
  font-family: var(--font-mono); font-size: 0.7rem;
  background: transparent; border: 1px solid var(--clr-border);
  color: var(--clr-muted); padding: 0.25rem 0.7rem;
  border-radius: 5px; cursor: pointer;
  transition: all var(--transition);
  display: flex; align-items: center; gap: 0.35rem;
}
.copy-btn:hover { background: var(--clr-accent); color: #fff; border-color: var(--clr-accent); }
.copy-btn.copied { background: #16a34a; color: #fff; border-color: #16a34a; }

.code-panel { display: none; }
.code-panel.active { display: block; }
.code-panel pre {
  margin: 0 !important;
  border-radius: 0 !important;
  font-family: var(--font-mono) !important;
  font-size: 0.82rem !important;
  line-height: 1.6 !important;
  max-height: 380px;
  overflow-y: auto;
  background: #f8fafc !important;
  padding: 1.1rem 1.2rem !important;
}
.code-panel pre code.hljs { padding: 0 !important; background: transparent !important; color: var( --clr-muted);}
.code-panel pre code { padding: 0 !important; background: transparent !important; color: var( --clr-muted);}
/* ── Mixed answer (text + code) ── */
.answer-section-label {
  font-family: var(--font-mono); font-size: 0.7rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1.5px;
  color: var(--clr-muted); margin-bottom: 0.6rem; margin-top: 1rem;
}
.answer-section-label:first-child { margin-top: 0; }

/* ── Difficulty badge ── */
.diff-badge {
  font-family: var(--font-mono); font-size: 0.65rem; font-weight: 700;
  padding: 0.18rem 0.55rem; border-radius: 4px;
  text-transform: uppercase; letter-spacing: 0.5px;
}
.diff-easy   { background: #f0fdf4; color: #16a34a; border: 1px solid #bbf7d0; }
.diff-medium { background: #fffbeb; color: #d97706; border: 1px solid #fde68a; }
.diff-hard   { background: #fef2f2; color: #dc2626; border: 1px solid #fecaca; }

/* ══ SIDEBAR ══ */
.sidebar { position: sticky; top: 80px; }
.sidebar-card {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
}
.sidebar-heading {
  font-family: var(--font-mono); font-size: 0.72rem;
  text-transform: uppercase; letter-spacing: 1.5px;
  color: var(--clr-muted); margin-bottom: 1rem;
  display: flex; align-items: center; gap: 0.5rem;
}
.sidebar-heading i { color: var(--clr-accent); }

/* TOC */
.toc-list { list-style: none; padding: 0; margin: 0; }
.toc-list li { border-bottom: 1px solid var(--clr-border); }
.toc-list li:last-child { border-bottom: none; }
.toc-list a {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.55rem 0; font-size: 0.875rem; font-weight: 500;
  color: var(--clr-muted); text-decoration: none;
  transition: color var(--transition), gap var(--transition);
}
.toc-list a:hover { color: var(--clr-accent); gap: 0.75rem; }
.toc-num {
  font-family: var(--font-mono); font-size: 0.68rem;
  color: var(--clr-accent); width: 18px; flex-shrink: 0; text-align: right;
}

/* Related posts */
.related-post {
  display: flex; gap: 0.75rem; align-items: flex-start;
  padding: 0.65rem 0; border-bottom: 1px solid var(--clr-border);
  text-decoration: none;
  transition: opacity var(--transition);
}
.related-post:last-child { border-bottom: none; padding-bottom: 0; }
.related-post:hover { opacity: 0.75; }
.related-thumb {
  width: 48px; height: 48px; border-radius: 8px;
  object-fit: cover; flex-shrink: 0;
  border: 1px solid var(--clr-border);
}
.related-title { font-size: 0.85rem; font-weight: 600; color: var(--clr-muted); line-height: 1.35; }
.related-meta  { font-size: 0.75rem; color: var(--clr-muted); margin-top: 0.2rem; }

/* Tags cloud */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tag-pill {
  font-family: var(--font-mono); font-size: 0.7rem;
  padding: 0.25rem 0.65rem; border-radius: 99px;
  background: var(--clr-bg); color: var(--clr-muted);
  border: 1px solid var(--clr-border); text-decoration: none;
  transition: all var(--transition);
}
.tag-pill:hover { background: var(--clr-accent); color: #fff; border-color: var(--clr-accent); }

/* Progress */
.progress-wrap { margin-bottom: 0.5rem; }
.progress-label { display: flex; justify-content: space-between; font-size: 0.8rem; color: var(--clr-muted); margin-bottom: 0.3rem; }
.progress { height: 6px; background: var(--clr-border); border-radius: 99px; overflow: hidden; }
.progress-bar { background: var(--clr-accent); border-radius: 99px; }

/* Author card */
.author-avatar-lg {
  width: 52px; height: 52px; border-radius: 50%;
  background: linear-gradient(135deg, var(--clr-accent), #60a5fa);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-weight: 700; font-size: 1rem;
  color: #fff; flex-shrink: 0;
}
.author-name-lg { font-weight: 600; color: var(--clr-muted); font-size: 0.95rem; }
.author-name-lg a { text-decoration:none; color: var(--clr-muted);  }
.author-name-lg a:hover { text-decoration:none; color: var(--clr-accent);  }
.author-bio { font-size: 0.82rem; color: var(--clr-muted); margin-top: 0.2rem; line-height: 1.4; }
.author-follow {
  font-family: var(--font-mono); font-size: 0.78rem; font-weight: 700;
  background: var(--clr-accent-light); color: var(--clr-accent);
  border: 1px solid rgba(37,99,235,0.2); border-radius: 6px;
  padding: 0.3rem 0.75rem; text-decoration: none;
  transition: all var(--transition); display: inline-block; margin-top: 0.75rem;
}
.author-follow:hover { background: var(--clr-accent); color: #fff; }

/* ══ BREADCRUMB BAR ══ */
.breadcrumb-bar {
  background: #c7d4f8;
  border-bottom: 1px solid var(--clr-border);
  padding: 0.75rem 0;
}
.breadcrumb { 
  margin: 0; 
  padding: 0; 
  font-size: 0.9rem; 
  font-weight: 500;
  color: var(--clr-muted); 
   align-items: center;
}
.breadcrumb-item a {
  color: var(--clr-muted); 
  text-decoration: none;
  display: inline-flex; 
  align-items: center; 
  gap: 0.3rem;
  transition: color var(--transition);
  font-size: 0.9rem;
}
.breadcrumb-item a:hover { 
 color: var(--clr-accent); 
}
.breadcrumb-item.active { 
  color: var(--clr-muted); 
  font-weight: 500;
  overflow: hidden; 
  text-overflow: ellipsis; 
  white-space: nowrap; 
  max-width: 220px; 
  align-items: center;
  font-size: 0.9rem;
}
.breadcrumb-item + .breadcrumb-item::before {
  content: "/"; 
  color: var(--clr-muted); 
}
.breadcrumb-home-icon { 
  font-size: 0.9rem; 
}

/* ══ PDF DOWNLOAD BUTTON ══ */
.pdf-download-bar {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 0.75rem;
  background: #fff;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 1.75rem;
  box-shadow: var(--shadow-sm);
}
.pdf-bar-info { display: flex; align-items: center; gap: 0.65rem; }
.pdf-bar-icon {
  width: 38px; height: 38px; border-radius: 9px;
  background: #fef2f2; color: #dc2626;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; flex-shrink: 0;
}
.pdf-bar-title { font-weight: 600; font-size: 0.9rem; color: var(--clr-muted); }
.pdf-bar-sub   { font-size: 0.78rem; color: var(--clr-muted); }
.btn-pdf {
  font-family: var(--font-mono); font-size: 0.8rem; font-weight: 700;
  background: #dc2626; color: #fff;
  border: none; padding: 0.55rem 1.25rem; border-radius: 8px;
  cursor: pointer; display: inline-flex; align-items: center; gap: 0.5rem;
  transition: all 0.22s ease; white-space: nowrap; flex-shrink: 0;
}
.btn-pdf:hover { background: #b91c1c; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(220,38,38,0.35); }
.btn-pdf:disabled { opacity: 0.65; cursor: not-allowed; transform: none; }
.btn-pdf i { font-size: 0.85rem; }
.btn-pdf.generating i { animation: spin 0.9s linear infinite; }
@keyframes pdf-spin { to { transform: rotate(360deg); } }
.pdf-progress {
  font-family: var(--font-mono); font-size: 0.72rem; color: var(--clr-muted);
  display: none; align-items: center; gap: 0.4rem; margin-top: 0.3rem;
}
.pdf-progress.visible { display: flex; }

/* ══ PDF PRINT STYLES (hidden normally) ══ */
#pdf-render-area {
  display: none;
  position: fixed; top: -9999px; left: -9999px;
  width: 794px; /* A4 width at 96dpi */
  background: #fff;
  font-family: 'DM Sans', sans-serif;
  color: #1e293b;
  padding: 0;
  z-index: -1;
}


/* ── CONTENT CARD ── */
.content-card {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
}
.content-card-header {
  padding: 1.1rem 1.5rem;
  background: #eef4ff;
  border-bottom: 1px solid var(--clr-border);
  display: flex; align-items: center; gap: 0.75rem;
}
.content-card-header-icon {
  width: 34px; height: 34px; border-radius: 8px;
  background: var(--clr-accent); color: #fff;
  display: flex; align-items: center; justify-content: center; font-size: 1rem; flex-shrink: 0;
}
.content-card-title { font-family: var(--font-mono); font-weight: 700; font-size: 1rem; color: var(--clr-muted); margin: 0; }
.content-card-body { padding: 1.5rem; }

/* ── FORM ── */
.form-label { font-size: 0.85rem; font-weight: 600; color: var(--clr-muted); margin-bottom: 0.4rem; }
.form-label span { color: #dc2626; margin-left: 2px; }
.form-control, .form-select {
  font-family: var(--font-body); font-size: 0.9rem;
  border: 1.5px solid var(--clr-border); border-radius: 8px;
  color: var(--clr-muted); background: #f8faff;
  padding: 0.65rem 0.9rem; transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus, .form-select:focus { border-color: var(--clr-accent); box-shadow: 0 0 0 3px rgba(29,78,216,0.12); outline: none; background: #fff; }
.form-control::placeholder { color: #94a3b8; }
textarea.form-control { resize: vertical; min-height: 130px; }
.btn-submit {
  font-family: var(--font-mono); font-size: 0.85rem; font-weight: 700;
  background: #1358d8; color: #fff; border: none;
  padding: 0.72rem 2rem; border-radius: 8px; cursor: pointer;
  transition: all var(--transition); display: inline-flex; align-items: center; gap: 0.5rem;
}
.btn-submit:hover { background: #0f46b8; transform: translateY(-1px); box-shadow: 0 4px 14px rgba(19,88,216,0.4); }
.form-hint { font-size: 0.78rem; color: var(--clr-muted); margin-top: 0.35rem; }

/* ── SUCCESS ALERT ── */
.alert-success-custom {
  display: none;
  background: #f0fdf4; border: 1.5px solid #bbf7d0;
  border-radius: 10px; padding: 1rem 1.25rem;
  color: #15803d; font-size: 0.9rem;
  align-items: center; gap: 0.65rem; margin-top: 1rem;
}
.alert-success-custom.show { display: flex; }
.alert-success-custom i { font-size: 1.25rem; flex-shrink: 0; }

.highlight-box { background: var(--clr-accent-light); border-left: 3px solid var(--clr-accent); border-radius: 0 8px 8px 0; padding: 1rem 1.25rem; margin: 1rem 0; font-size: 0.88rem; color: var(--clr-muted); line-height: 1.7; }
.content-card-body p {font-size: 0.95rem; color: var(--clr-muted); line-height: 1.75;}