.page-details {
  width: 100%;
  min-height: calc(100vh - 80px);
  padding-bottom: 3rem;
  background-color: #ecedff;
  background-image:
    radial-gradient(
      circle at 20% 10%,
      rgba(99, 106, 192, 0.08) 0%,
      transparent 45%
    ),
    radial-gradient(
      circle at 80% 90%,
      rgba(118, 125, 207, 0.1) 0%,
      transparent 40%
    ),
    radial-gradient(rgba(99, 106, 192, 0.07) 1px, transparent 1px);
  background-size:
    auto,
    auto,
    24px 24px;
  animation: pageDetailsFadeIn 0.5s ease both;
}

@keyframes pageDetailsFadeIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-shell {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

/* Breadcrumb */
.page-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
  color: #6b7280;
}

.page-breadcrumb a {
  color: #636ac0;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.page-breadcrumb a:hover {
  color: #4a52a8;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-breadcrumb-sep {
  color: #9ca3af;
  user-select: none;
}

.page-breadcrumb-current {
  color: #4b5563;
  font-weight: 500;
}

.page-header,
.page-article,
.page-sidebar {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.7);
  background: linear-gradient(
    145deg,
    rgba(255, 255, 255, 0.9) 0%,
    rgba(248, 249, 255, 0.78) 55%,
    rgba(240, 242, 255, 0.72) 100%
  );
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow:
    0 2px 4px rgba(99, 106, 192, 0.06),
    0 12px 32px rgba(99, 106, 192, 0.11),
    0 24px 48px rgba(44, 50, 88, 0.07);
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease,
    border-color 0.3s ease;
}

.page-header::after,
.page-article::after,
.page-sidebar::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    160deg,
    rgba(255, 255, 255, 0.5) 0%,
    rgba(255, 255, 255, 0.08) 30%,
    transparent 55%
  );
  pointer-events: none;
  z-index: 0;
}

.page-header > *,
.page-article > *,
.page-sidebar > * {
  position: relative;
  z-index: 1;
}

@media (hover: hover) {
  .page-article:hover {
    transform: translateY(-2px);
    border-color: rgba(148, 157, 255, 0.45);
    box-shadow:
      0 4px 8px rgba(99, 106, 192, 0.08),
      0 16px 40px rgba(99, 106, 192, 0.15),
      0 32px 64px rgba(44, 50, 88, 0.09);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-article,
  .page-sidebar {
    transition: none;
  }

  .page-article:hover {
    transform: none;
  }
}

.page-header {
  border-radius: 20px;
  padding: 2rem 2.5rem;
  margin-bottom: 1.5rem;
  transition: none;
}

@keyframes accentBarShimmer {
  0% {
    background-position: 0% 0%;
  }
  100% {
    background-position: 0% 200%;
  }
}

.page-header::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 5px;
  background: linear-gradient(
    180deg,
    #636ac0 0%,
    #949dff 20%,
    #767dcf 40%,
    #b8bfff 60%,
    #767dcf 80%,
    #636ac0 100%
  );
  background-size: 100% 200%;
  animation: accentBarShimmer 3.5s ease-in-out infinite;
  border-radius: 20px 0 0 20px;
  z-index: 2;
  box-shadow: 2px 0 12px rgba(99, 106, 192, 0.25);
}

@media (prefers-reduced-motion: reduce) {
  .page-header::before {
    animation: none;
    background: linear-gradient(180deg, #636ac0 0%, #767dcf 50%, #949dff 100%);
    background-size: auto;
  }
}

.page-title {
  margin: 0;
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  line-height: 1.15;
  color: #2c3258;
  letter-spacing: -0.02em;
}

.page-meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  flex-shrink: 0;
  gap: 0.75rem;
  font-size: 0.875rem;
  color: #6b7280;
  text-align: right;
}

.page-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.page-meta-icon {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
  opacity: 0.7;
}

.page-meta-row time {
  font-variant-numeric: tabular-nums;
}

.page-meta-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #c4c9e8;
  flex-shrink: 0;
}

.page-meta-row--article {
  margin-bottom: 1.5rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid rgba(99, 106, 192, 0.1);
  width: 100%;
}

.page-body {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.page-article {
  border-radius: 20px;
  padding: 2.5rem;
}

.page-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2.5rem;
  align-items: start;
}

.page-layout--right {
  grid-template-columns: 1fr 280px;
}

.page-sidebar {
  position: sticky;
  top: 100px;
  padding: 1.5rem;
  border-radius: 16px;
  border-top: 4px solid #767dcf;
  box-shadow:
    0 2px 4px rgba(99, 106, 192, 0.06),
    0 10px 28px rgba(118, 125, 207, 0.14),
    0 20px 40px rgba(44, 50, 88, 0.06);
}

.page-sidebar-label {
  display: block;
  margin-bottom: 1rem;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #767dcf;
}

.page-sidebar .page-prose {
  font-size: 0.95rem;
  max-width: none;
}

.page-prose {
  max-width: 68ch;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: #374151;
  word-wrap: break-word;
}

.page-prose--full {
  max-width: none;
}

.page-prose > p:first-of-type {
  font-size: 1.125rem;
  line-height: 1.75;
  color: #4b5563;
}

.page-prose h1,
.page-prose h2,
.page-prose h3,
.page-prose h4 {
  color: #2c3258;
  font-weight: 700;
  line-height: 1.3;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.page-prose h1 {
  font-size: 1.75rem;
}
.page-prose h2 {
  font-size: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid #ecedff;
}
.page-prose h3 {
  font-size: 1.25rem;
}
.page-prose h4 {
  font-size: 1.1rem;
}

.page-prose p {
  margin-bottom: 1.25rem;
}

.page-prose a {
  color: #636ac0;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}

.page-prose a:hover {
  color: #4a52a8;
}

.page-prose ul,
.page-prose ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

.page-prose li {
  margin-bottom: 0.5rem;
}

.page-prose img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  margin: 1.5rem 0;
  box-shadow: 0 4px 20px rgba(44, 50, 88, 0.1);
}

.page-prose blockquote {
  margin: 1.5rem 0;
  padding: 1.25rem 1.5rem;
  border-left: 4px solid #636ac0;
  background: linear-gradient(90deg, #f4f5ff 0%, #fff 100%);
  border-radius: 0 12px 12px 0;
  color: #555;
  font-style: italic;
}

.page-prose hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, #c4c9e8, transparent);
  margin: 2rem 0;
}

.page-prose pre,
.page-prose code {
  font-family: ui-monospace, "Cascadia Code", monospace;
  font-size: 0.9em;
}

.page-prose pre {
  padding: 1.25rem;
  background: #f4f5ff;
  border-radius: 12px;
  overflow-x: auto;
  margin: 1.5rem 0;
  border: 1px solid rgba(99, 106, 192, 0.15);
}

.page-prose code {
  padding: 0.15em 0.4em;
  background: #f4f5ff;
  border-radius: 4px;
  color: #4a52a8;
}

.page-prose pre code {
  padding: 0;
  background: none;
}

.page-prose table {
  width: 100%;
  margin: 1.5rem 0;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.page-prose th,
.page-prose td {
  padding: 0.75rem 1rem;
  border: 1px solid rgba(99, 106, 192, 0.15);
  text-align: left;
}

.page-prose th {
  background: #ecedff;
  font-weight: 600;
  color: #2c3258;
}

.page-prose tr:nth-child(even) td {
  background: rgba(236, 237, 255, 0.4);
}

.page-back-link {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  padding: 0.65rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: #636ac0;
  text-decoration: none;
  border: 2px solid #636ac0;
  border-radius: 999px;
  background: #fff;
  transition: all 0.25s ease;
}

.page-back-link:hover {
  color: #fff;
  background: #636ac0;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 106, 192, 0.25);
}

@media (max-width: 768px) {
  .page-shell {
    padding: 1.25rem 1rem 3rem;
  }

  .page-header {
    padding: 1.5rem 1.25rem;
  }

  .page-article {
    padding: 1.5rem 1.25rem;
  }

  .page-layout,
  .page-layout--right {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .page-sidebar {
    position: static;
    order: -1;
  }

  .page-layout--right .page-sidebar {
    order: -1;
  }

  .page-prose {
    max-width: none;
  }
}