/**
 * Sikar Education Hub — Single Post Template Stylesheet
 *
 * Implements Emil Kowalski's design engineering philosophy:
 * - Unseen details compound: tactile active states (scale 0.97), custom ease-out curves, precise typography.
 * - Restrained, luminous light canvas (#f8fafc to #ffffff) with royal purple (#582092 / #2b1055) & warm gold (#f9bd00).
 * - Hardware-accelerated transforms, zero scale(0), interruptible CSS transitions under 250ms.
 * - Touch-device hover protection via @media (hover: hover) and (pointer: fine).
 * - Accessible: prefers-reduced-motion support.
 */

:root {
  --sikar-purple-primary: #582092;
  --sikar-purple-hover: #481977;
  --sikar-purple-dark: #2b1055;
  --sikar-purple-light: #7745AE;
  --sikar-purple-tint: #f5f3ff;
  --sikar-purple-border: #ddd6fe;
  --sikar-yellow: #f9bd00;
  --sikar-yellow-hover: #e5ab00;
  --sikar-yellow-light: #fffbeb;
  --sikar-yellow-border: #fef3c7;
  --sikar-dark: #0f172a;
  --sikar-text-title: #111827;
  --sikar-text-body: #374151;
  --sikar-text-muted: #64748b;
  --sikar-border: #e2e8f0;
  --sikar-border-light: #f1f5f9;
  --sikar-bg-page: #ffffff;
  --sikar-bg-card: #f8fafc;
  --sikar-radius-sm: 8px;
  --sikar-radius-md: 12px;
  --sikar-radius-lg: 16px;
  --sikar-radius-pill: 9999px;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
}

/* ==========================================================================
   1. Base Layout & Structure
   ========================================================================== */
.sikar-single-page {
  background-color: var(--sikar-bg-page);
  color: var(--sikar-text-body);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-height: 80vh;
  width: 100%;
  box-sizing: border-box;
}

.sikar-single-container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 24px 48px;
  box-sizing: border-box;
}

.sikar-single-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 40px;
  align-items: start;
}

.sikar-single-main {
  min-width: 0;
  width: 100%;
}

.sikar-single-sidebar {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.sikar-sidebar-sticky-group {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

@media (min-width: 901px) {
  .sikar-sidebar-sticky-group {
    position: -webkit-sticky;
    position: sticky;
    top: 85px;
    z-index: 10;
  }
}

/* ==========================================================================
   2. Breadcrumbs & Reading Meta Bar
   ========================================================================== */
.sikar-post-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
  font-size: 13px;
  color: var(--sikar-text-muted);
}

.sikar-breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--sikar-text-muted);
}

.sikar-breadcrumbs a {
  color: var(--sikar-text-muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: color 180ms var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .sikar-breadcrumbs a:hover {
    color: var(--sikar-purple-primary);
  }
}

.sikar-breadcrumbs .sep {
  color: #cbd5e1;
  font-size: 12px;
}

.sikar-breadcrumbs .current {
  color: var(--sikar-dark);
  font-weight: 500;
  max-width: 320px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sikar-post-meta-badges {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--sikar-text-muted);
  font-weight: 500;
}

.sikar-post-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.sikar-post-meta-item svg {
  color: var(--sikar-purple-primary);
  flex-shrink: 0;
}

/* ==========================================================================
   3. Headline & Subtitle
   ========================================================================== */
.sikar-post-header {
  margin-bottom: 24px;
}

.sikar-post-title {
  font-size: 36px;
  line-height: 1.25;
  font-weight: 800;
  color: var(--sikar-text-title);
  margin: 0 0 16px 0;
  letter-spacing: -0.02em;
}

.sikar-post-excerpt {
  font-size: 16px;
  line-height: 1.6;
  color: var(--sikar-text-muted);
  margin: 0;
}

/* ==========================================================================
   4. Author Bar & Reading Meta Badges
   ========================================================================== */
.sikar-author-share-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding: 16px 0;
  border-top: 1px solid var(--sikar-border-light);
  border-bottom: 1px solid var(--sikar-border-light);
  margin-bottom: 24px;
}

.sikar-author-info-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sikar-author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

.sikar-author-names {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.sikar-author-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--sikar-text-title);
  text-decoration: none;
  transition: color 180ms var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .sikar-author-name:hover {
    color: var(--sikar-purple-primary);
  }
}

.sikar-badge-writer {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  background-color: var(--sikar-purple-tint);
  border: 1px solid var(--sikar-purple-border);
  color: var(--sikar-purple-primary);
  font-size: 11px;
  font-weight: 600;
  border-radius: var(--sikar-radius-pill);
  letter-spacing: 0.01em;
}

.sikar-author-share-bar .sikar-post-meta-badges {
  margin-left: auto;
}

/* ==========================================================================
   5. Featured Image
   ========================================================================== */
.sikar-featured-media {
  position: relative;
  width: 100%;
  border-radius: var(--sikar-radius-lg);
  overflow: hidden;
  margin-bottom: 32px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  background-color: #f1f5f9;
}

.sikar-featured-img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

/* ==========================================================================
   6. Table of Contents (TOC)
   ========================================================================== */
.sikar-toc-box {
  background: #fbfcfe;
  border: 1px solid #e2e8f0;
  border-radius: var(--sikar-radius-md);
  padding: 24px 28px;
  margin-bottom: 36px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
}

.sikar-toc-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid #eef2f6;
}

.sikar-toc-title-wrap {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--sikar-text-title);
}

.sikar-toc-title-wrap svg {
  color: var(--sikar-purple-primary);
}

.sikar-toc-jump {
  font-size: 13px;
  font-weight: 600;
  color: var(--sikar-purple-primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color 160ms var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .sikar-toc-jump:hover {
    color: var(--sikar-purple-hover);
    text-decoration: underline;
  }
}

.sikar-toc-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  column-gap: 36px;
  row-gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.sikar-toc-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  text-decoration: none;
  font-size: 13.5px;
  color: #334155;
  line-height: 1.45;
  font-weight: 500;
  transition: color 160ms var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .sikar-toc-item:hover {
    color: var(--sikar-purple-primary);
  }
}

.sikar-toc-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--sikar-purple-primary);
  color: #ffffff;
  font-size: 11px;
  font-weight: 700;
  margin-top: 1px;
  flex-shrink: 0;
}

/* ==========================================================================
   7. Article Content Typography & Callouts
   ========================================================================== */
.sikar-article-body {
  font-size: 16px;
  line-height: 1.75;
  color: var(--sikar-text-body);
  position: relative;
}

.sikar-article-body p {
  margin-top: 0;
  margin-bottom: 20px;
}

.sikar-article-body h2 {
  font-size: 22px;
  line-height: 1.35;
  font-weight: 800;
  color: var(--sikar-text-title);
  margin-top: 36px;
  margin-bottom: 16px;
  padding-left: 14px;
  border-left: 4px solid var(--sikar-purple-primary);
  scroll-margin-top: 90px;
}

.sikar-article-body h3 {
  font-size: 19px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--sikar-text-title);
  margin-top: 28px;
  margin-bottom: 14px;
  scroll-margin-top: 90px;
}

.sikar-article-body strong {
  color: var(--sikar-text-title);
  font-weight: 700;
}

.sikar-article-body a {
  color: var(--sikar-purple-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 160ms var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .sikar-article-body a:hover {
    color: var(--sikar-purple-hover);
  }
}

/* Key Point Callout */
.sikar-callout-keypoint {
  background: var(--sikar-purple-tint);
  border: 1px solid var(--sikar-purple-border);
  border-radius: var(--sikar-radius-md);
  padding: 18px 22px;
  margin: 24px 0;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.sikar-callout-icon-purple {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--sikar-purple-primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.sikar-callout-content {
  flex: 1;
}

.sikar-callout-title {
  font-size: 15px;
  font-weight: 800;
  color: var(--sikar-purple-primary);
  margin-bottom: 4px;
}

.sikar-callout-desc {
  font-size: 14.5px;
  color: #4b1d79;
  line-height: 1.55;
  margin: 0;
}

/* Note Callout */
.sikar-callout-note {
  background: var(--sikar-yellow-light);
  border: 1px solid var(--sikar-yellow-border);
  border-radius: var(--sikar-radius-md);
  padding: 16px 20px;
  margin: 24px 0;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.sikar-callout-icon-yellow {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--sikar-yellow);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 13px;
  flex-shrink: 0;
  margin-top: 1px;
}

.sikar-callout-note-text {
  font-size: 14px;
  line-height: 1.55;
  color: #854d0e;
  margin: 0;
}

/* Checklist items with purple check icons */
.sikar-checklist {
  list-style: none;
  padding: 0;
  margin: 20px 0;
}

.sikar-checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 15px;
  line-height: 1.55;
  color: #334155;
}

.sikar-check-icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--sikar-purple-primary);
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

/* Content Tables */
.sikar-article-body table,
.sikar-content-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 24px 0;
  border: 1px solid var(--sikar-border);
  border-radius: var(--sikar-radius-md);
  overflow: hidden;
  font-size: 14px;
}

.sikar-article-body th,
.sikar-content-table th {
  background: #f1f5f9;
  color: var(--sikar-text-title);
  font-weight: 700;
  text-align: left;
  padding: 12px 18px;
  border-bottom: 1px solid var(--sikar-border);
}

.sikar-article-body td,
.sikar-content-table td {
  padding: 12px 18px;
  color: var(--sikar-text-body);
  border-bottom: 1px solid #f1f5f9;
}

.sikar-article-body tr:last-child td,
.sikar-content-table tr:last-child td {
  border-bottom: none;
}

.sikar-article-body tr:nth-child(even) td,
.sikar-content-table tr:nth-child(even) td {
  background-color: #fafbfc;
}

/* ==========================================================================
   8. Post Body Container (Full Content)
   ========================================================================== */
.sikar-article-wrapper {
  position: relative;
  width: 100%;
}

/* ==========================================================================
   9. Bottom "More from [Category]" Grid
   ========================================================================== */
.sikar-related-section {
  margin-top: 48px;
  padding-top: 36px;
  border-top: 1px solid var(--sikar-border);
}

.sikar-related-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.sikar-related-title {
  font-size: 24px;
  font-weight: 800;
  color: var(--sikar-text-title);
  margin: 0;
}

.sikar-related-viewall {
  font-size: 13px;
  font-weight: 700;
  color: var(--sikar-purple-primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: transform 160ms var(--ease-out), color 160ms var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .sikar-related-viewall:hover {
    color: var(--sikar-purple-hover);
    transform: translateX(3px);
  }
}

.sikar-related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.sikar-related-card {
  background: #ffffff;
  border: 1px solid var(--sikar-border);
  border-radius: var(--sikar-radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
  transition: transform 200ms var(--ease-out), box-shadow 200ms var(--ease-out), border-color 200ms var(--ease-out);
}

.sikar-related-card:active {
  transform: scale(0.98);
}

@media (hover: hover) and (pointer: fine) {
  .sikar-related-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.08);
    border-color: var(--sikar-purple-border);
  }
}

.sikar-related-card-thumb {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background-color: #f1f5f9;
}

.sikar-related-card-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.sikar-related-card-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--sikar-text-title);
  line-height: 1.45;
  margin: 0 0 10px 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.sikar-related-card-date {
  font-size: 12px;
  color: var(--sikar-text-muted);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-top: auto;
}

/* ==========================================================================
   12. Right Sidebar Widgets
   ========================================================================== */
.sikar-widget {
  background: #ffffff;
  border: 1px solid var(--sikar-border);
  border-radius: var(--sikar-radius-lg);
  padding: 24px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
}

.sikar-widget-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--sikar-border-light);
}

.sikar-widget-title-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 800;
  color: var(--sikar-text-title);
  margin: 0;
  position: relative;
  padding-left: 12px;
  border-left: 3.5px solid var(--sikar-purple-primary);
}

.sikar-widget-viewall {
  font-size: 12px;
  font-weight: 700;
  color: var(--sikar-purple-primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 3px;
  transition: transform 160ms var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .sikar-widget-viewall:hover {
    transform: translateX(2px);
  }
}

/* Widget 1: Fixed NEET Top Rankings Card */
.sikar-widget-rankings {
  border: 1px solid #e9d5ff;
  background: #ffffff;
}

.sikar-rankings-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

.sikar-rankings-badge-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--sikar-purple-primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(88, 32, 146, 0.2);
}

.sikar-rankings-header-text {
  font-size: 16px;
  font-weight: 700;
  color: var(--sikar-text-title);
  line-height: 1.3;
}

.sikar-rankings-header-text span {
  color: var(--sikar-purple-primary);
  font-weight: 800;
}

.sikar-rankings-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.sikar-ranking-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border: 1px solid #ede9fe;
  border-radius: var(--sikar-radius-md);
  text-decoration: none;
  transition: transform 160ms var(--ease-out), background-color 160ms var(--ease-out), border-color 160ms var(--ease-out), box-shadow 160ms var(--ease-out);
}

.sikar-ranking-item:active {
  transform: scale(0.98);
}

@media (hover: hover) and (pointer: fine) {
  .sikar-ranking-item:hover {
    background-color: var(--sikar-purple-tint);
    border-color: #c084fc;
    box-shadow: 0 4px 12px rgba(88, 32, 146, 0.08);
  }
}

.sikar-ranking-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sikar-rank-num {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: var(--sikar-purple-primary);
  color: #ffffff;
  font-size: 13px;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sikar-rank-name {
  font-size: 14px;
  font-weight: 600;
  color: #1e293b;
}

.sikar-rank-chevron {
  color: #94a3b8;
  font-size: 18px;
  line-height: 1;
}

/* Post list widgets (Recent, Trending, Related) */
.sikar-widget-posts-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sikar-widget-post-row {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  text-decoration: none;
  transition: transform 160ms var(--ease-out);
}

.sikar-widget-post-row:active {
  transform: scale(0.98);
}

@media (hover: hover) and (pointer: fine) {
  .sikar-widget-post-row:hover .sikar-widget-post-title {
    color: var(--sikar-purple-primary);
  }
}

.sikar-widget-post-thumb {
  width: 88px;
  aspect-ratio: 16 / 9;
  height: auto;
  border-radius: var(--sikar-radius-sm);
  object-fit: cover;
  background-color: #f1f5f9;
  flex-shrink: 0;
}

.sikar-widget-post-info {
  min-width: 0;
}

.sikar-widget-post-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--sikar-text-title);
  line-height: 1.4;
  margin: 0 0 6px 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 160ms var(--ease-out);
}

.sikar-widget-post-date {
  font-size: 11.5px;
  color: var(--sikar-text-muted);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* Widget 4: Newsletter "Stay Updated" */
.sikar-widget-newsletter {
  background: linear-gradient(135deg, #37175c 0%, #200839 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--sikar-radius-lg);
  padding: 28px 24px;
  color: #ffffff;
  box-shadow: 0 8px 30px rgba(32, 8, 57, 0.25);
}

.sikar-newsletter-top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.sikar-newsletter-top svg {
  color: var(--sikar-yellow);
}

.sikar-newsletter-title {
  font-size: 19px;
  font-weight: 800;
  color: #ffffff !important;
  margin: 0;
}

.sikar-newsletter-desc {
  font-size: 13.5px;
  line-height: 1.5;
  color: #d8b4fe;
  margin: 0 0 20px 0;
}

.sikar-newsletter-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sikar-newsletter-input-wrap {
  position: relative;
  width: 100%;
}

.sikar-newsletter-input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: #a855f7;
  pointer-events: none;
}

.sikar-newsletter-input {
  width: 100%;
  padding: 12px 14px 12px 42px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--sikar-radius-sm);
  color: #ffffff;
  font-size: 13.5px;
  box-sizing: border-box;
  outline: none;
  transition: border-color 160ms var(--ease-out), background-color 160ms var(--ease-out);
}

.sikar-newsletter-input::placeholder {
  color: #c084fc;
  opacity: 0.8;
}

.sikar-newsletter-input:focus {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--sikar-yellow);
}

.sikar-newsletter-btn {
  width: 100%;
  padding: 12px;
  background: linear-gradient(90deg, #f9bd00 0%, #f59e0b 100%);
  border: none;
  border-radius: var(--sikar-radius-sm);
  color: #1e1b4b;
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  box-shadow: 0 4px 14px rgba(249, 189, 0, 0.25);
  transition: transform 160ms var(--ease-out), filter 160ms var(--ease-out);
}

.sikar-newsletter-btn:active {
  transform: scale(0.97);
}

@media (hover: hover) and (pointer: fine) {
  .sikar-newsletter-btn:hover {
    filter: brightness(1.05);
  }
}

/* Toast for Bookmark and Share Copy */
.sikar-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #0f172a;
  color: #ffffff;
  padding: 12px 20px;
  border-radius: var(--sikar-radius-pill);
  font-size: 13.5px;
  font-weight: 600;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 99999;
  opacity: 0;
  transform: translateY(12px) scale(0.96);
  pointer-events: none;
  transition: opacity 200ms var(--ease-out), transform 200ms var(--ease-out);
}

.sikar-toast.show {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* ==========================================================================
   13. Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1080px) {
  .sikar-single-layout {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 32px;
  }

  .sikar-related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .sikar-single-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .sikar-single-sidebar {
    height: auto;
    max-width: 600px;
    margin: 0 auto;
  }

  .sikar-sidebar-sticky-group {
    position: static;
  }

  .sikar-post-title {
    font-size: 28px;
  }
}

@media (max-width: 640px) {
  .sikar-single-container {
    padding: 16px 16px 40px;
  }

  .sikar-post-title {
    font-size: 24px;
    line-height: 1.3;
  }

  .sikar-post-topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .sikar-author-share-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .sikar-author-share-bar .sikar-post-meta-badges {
    margin-left: 0;
    width: 100%;
    justify-content: flex-start;
    padding-top: 8px;
    border-top: 1px dashed var(--sikar-border-light);
  }

  .sikar-toc-grid {
    grid-template-columns: 1fr;
  }

  .sikar-related-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {

  *,
  ::before,
  ::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}