/* ========== LEARN ARTICLE STYLES ========== */
/* Sidebar layout + article content rendering + callout components */

/* ========== SIDEBAR LAYOUT ========== */

.learn-layout {
  display: flex;
  min-height: calc(100vh - 4rem);
  position: relative;
}

.learn-sidebar {
  width: 280px;
  background: linear-gradient(180deg, #1B1237 0%, #120E2A 100%);
  position: fixed;
  top: 4rem;
  left: 0;
  height: calc(100vh - 4rem);
  overflow-y: auto;
  z-index: 1000;
  transition: transform 0.3s ease-in-out;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
}

.learn-sidebar-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.learn-sidebar-back {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  color: #FE0170;
  font-family: 'Fira Code', monospace;
  font-size: 0.8rem;
  font-weight: 600;
  text-decoration: none;
  margin-bottom: 1rem;
  transition: color 0.2s ease;
}
.learn-sidebar-back:hover { color: #FFC403; }

.learn-track-switcher {
  display: flex;
  gap: 0;
  border: 1px solid rgba(255, 255, 255, 0.10);
}
.learn-track-tab {
  flex: 1;
  padding: 0.5rem;
  text-align: center;
  font-family: 'Fira Code', monospace;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.4);
  text-decoration: none;
  transition: all 0.2s ease;
  background: rgba(255, 255, 255, 0.02);
}
.learn-track-tab:hover {
  color: rgba(255, 255, 255, 0.7);
  background: rgba(255, 255, 255, 0.04);
}
.learn-track-tab--active.learn-track-tab--yellow {
  color: #FFC403;
  background: rgba(255, 196, 3, 0.08);
  border-bottom: 2px solid #FFC403;
}
.learn-track-tab--active.learn-track-tab--cyan {
  color: #22d3ee;
  background: rgba(34, 211, 238, 0.08);
  border-bottom: 2px solid #22d3ee;
}

/* ---- Sidebar navigation (docs-style accordion) ---- */
.learn-sidebar-nav { padding: 0; }
.learn-nav-group { margin-bottom: 0; }

.learn-section-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.875rem 1.5rem;
  color: rgba(255, 255, 255, 0.8);
  font-family: 'Fira Code', monospace;
  font-weight: 600;
  font-size: 0.8rem;
  text-align: left;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: none;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}
.learn-section-toggle:hover {
  background: rgba(255, 255, 255, 0.03);
  color: #FFC403;
}

.learn-chevron {
  width: 1rem;
  height: 1rem;
  color: rgba(255, 255, 255, 0.4);
  transition: transform 0.2s ease;
}
.learn-section.expanded .learn-chevron {
  transform: rotate(90deg);
  color: #FFC403;
}

.learn-subsection {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}
.learn-section.expanded .learn-subsection {
  max-height: 2000px;
}

.learn-nav-link {
  display: block;
  padding: 0.625rem 2rem;
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.9rem;
  font-weight: 400;
  text-decoration: none;
  transition: all 0.2s ease;
  border-left: 2px solid transparent;
}
.learn-nav-link:hover {
  color: #FFC403;
  background: rgba(255, 196, 3, 0.03);
}
.learn-nav-link.active {
  color: #FFC403;
  font-weight: 600;
  border-left: 2px solid #FFC403;
  background: rgba(255, 196, 3, 0.05);
}

/* ---- Main content area ---- */
.learn-main {
  flex: 1;
  margin-left: 280px;
  margin-top: 4rem;
  min-height: calc(100vh - 4rem);
  background: linear-gradient(180deg, #1B1237 0%, #151030 30%, #120E2A 60%, #0F0B24 100%);
  position: relative;
}
.learn-main::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.4) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.4) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.015;
  pointer-events: none;
  z-index: 0;
}
.learn-main > * { position: relative; z-index: 1; }

.learn-content-wrapper {
  max-width: 48rem;
  margin: 0 auto;
  padding: 3rem 2rem 4rem;
}

.learn-mobile-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  margin-bottom: 2rem;
  color: rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.10);
  cursor: pointer;
  transition: all 0.2s ease;
}
.learn-mobile-toggle:hover {
  color: #FFC403;
  border-color: rgba(255, 196, 3, 0.3);
}

.learn-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  display: none;
}
.learn-overlay.active { display: block; }

.learn-footer { position: relative; z-index: 1; }

.learn-sidebar::-webkit-scrollbar { width: 4px; }
.learn-sidebar::-webkit-scrollbar-track { background: transparent; }
.learn-sidebar::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.12); }

/* ---- Article header ---- */
.learn-article-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.learn-hero-meta {
  color: #9ca3af;
  font-size: 0.875rem;
}
.learn-hero-meta span + span::before {
  content: "|";
  margin: 0 0.5rem;
  color: #4b5563;
}

/* ---- Prev/Next navigation ---- */
.learn-page-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.learn-page-nav-link {
  display: block;
  padding: 1.25rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.10);
  text-decoration: none;
  transition: all 0.2s ease;
}
.learn-page-nav-link:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: #FFC403;
  transform: translateY(-2px);
}
.learn-page-nav-link--next { text-align: right; }
.learn-page-nav-label {
  display: block;
  font-family: 'Fira Code', monospace;
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: 0.25rem;
}
.learn-page-nav-title { color: #e5e5e5; font-size: 0.9rem; font-weight: 600; }
.learn-page-nav-link:hover .learn-page-nav-title { color: #FFC403; }

/* ========== BADGES ========== */

.learn-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  font-family: 'Fira Code', monospace;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border: 1px solid;
}
.learn-badge--yellow {
  color: #FFC403;
  border-color: rgba(255, 196, 3, 0.3);
  background: rgba(255, 196, 3, 0.08);
}
.learn-badge--pink {
  color: #FE0170;
  border-color: rgba(254, 1, 112, 0.3);
  background: rgba(254, 1, 112, 0.08);
}
.learn-badge--cyan {
  color: #22d3ee;
  border-color: rgba(34, 211, 238, 0.3);
  background: rgba(34, 211, 238, 0.08);
}

/* ========== GUIDE INFO BOX ========== */

.learn-guide-info {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.10);
  padding: 2rem;
  margin-bottom: 2.5rem;
}
.learn-guide-info-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  color: #e5e5e5;
  font-family: 'Fira Code', monospace;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.learn-guide-info-header svg { width: 18px; height: 18px; color: #FFC403; }

.learn-guide-learnings { list-style: none; padding: 0; margin: 0 0 1.5rem; }
.learn-guide-learnings li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.625rem;
  color: #cbd5e1;
  font-size: 0.9rem;
  line-height: 1.5;
}
.learn-guide-learnings svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  margin-top: 0.2rem;
  color: #FFC403;
}

.learn-guide-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: #9ca3af;
  font-family: 'Fira Code', monospace;
  font-size: 0.75rem;
}
.learn-guide-meta-item { display: flex; align-items: center; gap: 0.375rem; }
.learn-guide-meta svg { width: 14px; height: 14px; }

/* ========== CALLOUT COMPONENTS ========== */

.learn-callout {
  padding: 1.5rem;
  margin: 2rem 0;
  border: 1px solid;
}
.learn-callout-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Fira Code', monospace;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.learn-callout-label svg { width: 16px; height: 16px; }
.learn-callout p {
  color: #cbd5e1;
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0;
}
.learn-callout p a {
  color: #FFC403;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}
.learn-callout p a:hover { color: #FE0170; }

.learn-callout--key-takeaway {
  border-color: rgba(255, 196, 3, 0.3);
  background: rgba(255, 196, 3, 0.05);
}
.learn-callout--key-takeaway .learn-callout-label { color: #FFC403; }

.learn-callout--tryit {
  border-color: rgba(255, 196, 3, 0.3);
  background: rgba(255, 196, 3, 0.05);
}
.learn-callout--tryit .learn-callout-label { color: #FFC403; }

.learn-callout--deep-dive {
  border-color: rgba(34, 211, 238, 0.3);
  background: rgba(34, 211, 238, 0.05);
}
.learn-callout--deep-dive .learn-callout-label { color: #22d3ee; }

.learn-callout--why-it-matters {
  border-color: rgba(254, 1, 112, 0.3);
  background: rgba(254, 1, 112, 0.05);
}
.learn-callout--why-it-matters .learn-callout-label { color: #FE0170; }

/* ========== CROSS-TRACK NUDGE ========== */

.learn-cross-track {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  margin: 3rem 0 2rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.10);
  text-decoration: none;
  transition: all 0.2s ease;
}
.learn-cross-track:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.18);
}
.learn-cross-track-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid rgba(255, 255, 255, 0.12);
}
.learn-cross-track-icon svg { width: 20px; height: 20px; color: #9ca3af; }
.learn-cross-track-label {
  font-family: 'Fira Code', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #9ca3af;
  margin-bottom: 0.125rem;
}
.learn-cross-track-title { color: #e5e5e5; font-size: 0.9rem; font-weight: 600; }
.learn-cross-track-arrow { margin-left: auto; color: #9ca3af; transition: transform 0.2s ease; }
.learn-cross-track:hover .learn-cross-track-arrow { transform: translateX(3px); }
.learn-cross-track-arrow svg { width: 18px; height: 18px; }

/* ========== ARTICLE BODY ========== */

.learn-article {
  max-width: 48rem;
  margin: 0 auto;
  color: #cbd5e1;
  font-size: 1.125rem;
  line-height: 1.8;
}

.learn-article h2 { color: #FE0170; font-size: 1.75rem; margin-top: 3rem; margin-bottom: 1rem; }
.learn-article h3 { color: #FE0170; font-size: 1.375rem; margin-top: 2.5rem; margin-bottom: 0.75rem; }
.learn-article h4 { color: #FFC403; font-size: 1.125rem; margin-top: 2rem; margin-bottom: 0.5rem; }
.learn-article p { margin-bottom: 1.5rem; }

.learn-article a {
  color: #FFC403;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}
.learn-article a:hover { color: #FE0170; }

.learn-article ul, .learn-article ol { margin-bottom: 1.5rem; padding-left: 1.5rem; }
.learn-article ul { list-style: disc; }
.learn-article ol { list-style: decimal; }
.learn-article li { margin-bottom: 0.5rem; }
.learn-article li::marker { color: #FFC403; }

.learn-article code {
  font-family: 'Fira Code', monospace;
  font-size: 0.9em;
  background: #0f172a;
  color: #22d3ee;
  padding: 0.15em 0.4em;
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.learn-article pre {
  background: #0f172a;
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
  overflow-x: auto;
}
.learn-article pre code { background: none; border: none; padding: 0; font-size: 0.875rem; line-height: 1.7; }

.learn-article blockquote {
  border-left: 3px solid #FFC403;
  background: rgba(255, 196, 3, 0.05);
  margin: 1.5rem 0;
  padding: 1rem 1.5rem;
  color: #e5e5e5;
  font-style: italic;
}
.learn-article blockquote p:last-child { margin-bottom: 0; }

.learn-article table { width: 100%; margin-bottom: 1.5rem; border-collapse: collapse; }
.learn-article th {
  background: rgba(71, 22, 149, 0.3);
  color: #e5e5e5;
  font-weight: 600;
  text-align: left;
  padding: 0.75rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.10);
}
.learn-article td { padding: 0.75rem 1rem; border: 1px solid rgba(255, 255, 255, 0.08); }

.learn-article img { max-width: 100%; height: auto; margin: 1.5rem 0; border: 1px solid rgba(255, 255, 255, 0.08); }
.learn-article hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
  margin: 3rem 0;
}
.learn-article strong { color: #e5e5e5; font-weight: 600; }

/* ========== OVERVIEW PAGE ========== */

.learn-content-wrapper--wide {
  max-width: 56rem;
}

.learn-overview {
  color: #cbd5e1;
}

.learn-overview-hero {
  text-align: center;
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.learn-overview-hero h1 {
  font-size: 2.25rem;
  color: #e5e5e5;
  margin-bottom: 1rem;
}
.learn-overview-hero p {
  color: #9ca3af;
  font-size: 1.0625rem;
  line-height: 1.7;
  max-width: 36rem;
  margin: 0 auto;
}

.learn-overview-section {
  margin-bottom: 3rem;
}
.learn-overview-section-header {
  text-align: center;
  margin-bottom: 1.5rem;
}
.learn-overview-section-header h2 { color: #e5e5e5; }

/* Track selection cards */
.learn-track-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.learn-track-card {
  display: block;
  padding: 2rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.10);
  text-decoration: none;
  transition: all 0.3s ease;
}
.learn-track-card:hover {
  background: rgba(255, 255, 255, 0.06);
  transform: translateY(-2px);
}
.learn-track-card--yellow:hover { border-color: rgba(255, 196, 3, 0.4); }
.learn-track-card--cyan:hover { border-color: rgba(34, 211, 238, 0.4); }

.learn-track-card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.12);
  margin-bottom: 1.25rem;
}
.learn-track-card--yellow .learn-track-card-icon {
  color: #FFC403;
  border-color: rgba(255, 196, 3, 0.3);
}
.learn-track-card--cyan .learn-track-card-icon {
  color: #22d3ee;
  border-color: rgba(34, 211, 238, 0.3);
}

.learn-track-card-benefits {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
}
.learn-track-card-benefits li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.375rem;
  color: #9ca3af;
  font-size: 0.8125rem;
}
.learn-track-card--yellow .learn-track-card-benefits svg { color: #FFC403; }
.learn-track-card--cyan .learn-track-card-benefits svg { color: #22d3ee; }

.learn-track-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: #9ca3af;
}

.learn-track-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-family: 'Fira Code', monospace;
  font-size: 0.75rem;
  font-weight: 600;
}
.learn-track-card--yellow .learn-track-card-cta { color: #FFC403; }
.learn-track-card--cyan .learn-track-card-cta { color: #22d3ee; }

/* Tier cards */
.learn-tier-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.learn-tier-card {
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.10);
  text-align: center;
}
.learn-tier-card h3 { color: #e5e5e5; }

.learn-tier-number {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: 'Fira Code', monospace;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  border: 2px solid;
}
.learn-tier-number--yellow { color: #FFC403; border-color: rgba(255, 196, 3, 0.4); }
.learn-tier-number--pink { color: #FE0170; border-color: rgba(254, 1, 112, 0.4); }
.learn-tier-number--cyan { color: #22d3ee; border-color: rgba(34, 211, 238, 0.4); }

/* Article grid on overview */
.learn-overview-articles {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.learn-overview-article-card {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  text-decoration: none;
  transition: all 0.2s ease;
}
.learn-overview-article-card:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 196, 3, 0.3);
}
.learn-overview-article-title {
  color: #e5e5e5;
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.4;
}
.learn-overview-article-card:hover .learn-overview-article-title { color: #FFC403; }

/* Overview nav link */
.learn-nav-link--overview {
  padding: 0.75rem 1.5rem;
  font-weight: 500;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

/* ========== RESPONSIVE ========== */

@media (max-width: 1023px) {
  .learn-sidebar { transform: translateX(-100%); }
  .learn-sidebar.open { transform: translateX(0); }
  .learn-main { margin-left: 0; width: 100%; margin-top: 0; }
  .learn-content-wrapper { padding: 2rem 1.25rem 3rem; }
  .learn-mobile-toggle { display: flex; }
  .learn-footer { width: 100%; }
  .learn-page-nav { grid-template-columns: 1fr; }
}

@media (min-width: 1024px) {
  .learn-footer { width: 100%; }
}

nav.fixed.bottom-0.left-0,
nav.fixed.md\:sticky.md\:top-0 {
  z-index: 3000 !important;
}

@media (max-width: 768px) {
  .learn-article { font-size: 1rem; }
  .learn-article h2 { font-size: 1.5rem; }
  .learn-article h3 { font-size: 1.25rem; }
  .learn-guide-info { padding: 1.5rem; }
  .learn-guide-meta { flex-wrap: wrap; gap: 0.75rem; }
  .learn-cross-track { flex-direction: column; align-items: flex-start; gap: 0.75rem; }
  .learn-cross-track-arrow { display: none; }
  .learn-track-cards { grid-template-columns: 1fr; }
  .learn-tier-cards { grid-template-columns: 1fr; }
  .learn-overview-articles { grid-template-columns: 1fr; }
  .learn-overview-hero h1 { font-size: 1.75rem; }
}