/* LenTiny static blog styles. All selectors use blog-* to avoid landing CSS collisions. */

body.blog-body {
  --blog-blue-deep: #2d6f94;
  --blog-blue-main: #99ccff;
  --blog-blue-light: #e1f1ff;
  --blog-blue-pale: #f6fbff;
  --blog-warm-pale: #fff7ef;
  --blog-rose-soft: #f4b5aa;
  --blog-rose-pale: #ffe5df;
  --blog-mint-pale: #eaf8f0;
  --blog-mint: #6fc59a;
  --blog-white: #ffffff;
  --blog-text: #1b3f5c;
  --blog-muted: #5b748a;
  --blog-soft: #6f8ea8;
  --blog-border: rgba(153, 204, 255, .44);
  --blog-shadow: 0 16px 42px rgba(45, 111, 148, .11);
  --blog-shadow-soft: 0 8px 22px rgba(45, 111, 148, .08);
  --blog-radius: 18px;
  --blog-radius-lg: 28px;
  --blog-max: 1120px;
  margin: 0;
  color: var(--blog-text);
  background:
    radial-gradient(circle at top left, rgba(255, 229, 223, .58), transparent 34rem),
    linear-gradient(180deg, var(--blog-white) 0%, var(--blog-blue-pale) 48%, var(--blog-white) 100%);
  font-family: "Be Vietnam Pro", "Noto Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

.blog-page,
.blog-page *,
.blog-page *::before,
.blog-page *::after {
  box-sizing: border-box;
}

.blog-page a {
  color: inherit;
  text-decoration: none;
}

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

.blog-page :focus-visible {
  outline: 3px solid var(--blog-mint);
  outline-offset: 3px;
}

.blog-reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 80;
  width: 100%;
  height: 4px;
  background: transparent;
  pointer-events: none;
}

.blog-reading-progress span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: 0 999px 999px 0;
  background: linear-gradient(90deg, var(--blog-blue-deep), var(--blog-rose-soft));
  box-shadow: 0 4px 12px rgba(45, 111, 148, .22);
}

.blog-shell {
  width: min(100%, var(--blog-max));
  margin: 0 auto;
  padding: 0 18px;
}

.blog-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--blog-border);
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.blog-header-inner {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.blog-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.blog-logo {
  width: 52px;
  height: 52px;
  flex: 0 0 52px;
  object-fit: contain;
}

.blog-brand-name,
.blog-brand-note {
  display: block;
}

.blog-brand-name {
  font-weight: 900;
  line-height: 1.2;
}

.blog-brand-note {
  color: var(--blog-rose-soft);
  font-size: .75rem;
  font-weight: 800;
}

.blog-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.blog-nav-link,
.blog-button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  font-weight: 850;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease;
}

.blog-nav-link {
  padding: 8px 13px;
  border: 1px solid transparent;
  color: var(--blog-muted);
  font-size: .9rem;
  white-space: nowrap;
}

.blog-nav-link:hover,
.blog-nav-link.blog-active {
  border-color: var(--blog-border);
  background: var(--blog-white);
  color: var(--blog-text);
  box-shadow: var(--blog-shadow-soft);
}

.blog-main {
  padding: 24px 0 54px;
}

.blog-hero,
.blog-panel,
.blog-card,
.blog-post-hero,
.blog-content-card,
.blog-cta,
.blog-related-card {
  border: 1px solid var(--blog-border);
  border-radius: var(--blog-radius-lg);
  background: rgba(255, 255, 255, .9);
  box-shadow: var(--blog-shadow-soft);
}

.blog-hero,
.blog-post-hero {
  padding: clamp(22px, 5vw, 44px);
  background:
    linear-gradient(135deg, rgba(225, 241, 255, .86), rgba(255, 247, 239, .9)),
    var(--blog-white);
}

.blog-eyebrow {
  margin: 0 0 10px;
  color: var(--blog-blue-deep);
  font-size: .75rem;
  font-weight: 900;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.blog-title,
.blog-post-title {
  margin: 0;
  color: var(--blog-text);
  font-family: "Playfair Display", Georgia, serif;
  font-size: clamp(2rem, 8vw, 4rem);
  line-height: 1.08;
  letter-spacing: 0;
}

.blog-lead,
.blog-post-lead {
  max-width: 710px;
  margin: 14px 0 0;
  color: var(--blog-muted);
  font-size: 1.02rem;
}

.blog-controls {
  display: grid;
  gap: 12px;
  margin: 18px 0;
  padding: 14px;
}

.blog-field {
  display: grid;
  gap: 6px;
  color: var(--blog-soft);
  font-size: .82rem;
  font-weight: 900;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.blog-search {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--blog-border);
  border-radius: 999px;
  padding: 11px 15px;
  background: var(--blog-white);
  color: var(--blog-text);
  font: inherit;
  font-size: .94rem;
  text-transform: none;
  letter-spacing: 0;
}

.blog-filter-row,
.blog-tags,
.blog-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.blog-filter {
  min-height: 36px;
  border: 1px solid var(--blog-border);
  border-radius: 999px;
  padding: 7px 12px;
  background: var(--blog-white);
  color: var(--blog-text);
  cursor: pointer;
  font: inherit;
  font-size: .82rem;
  font-weight: 850;
}

.blog-filter.blog-active {
  background: var(--blog-blue-light);
  border-color: rgba(45, 111, 148, .28);
}

.blog-grid {
  display: grid;
  gap: 16px;
}

.blog-card {
  overflow: hidden;
}

.blog-card[hidden] {
  display: none;
}

.blog-media {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  border-radius: var(--blog-radius-lg) var(--blog-radius-lg) 14px 14px;
  background:
    linear-gradient(135deg, rgba(225, 241, 255, .92), rgba(255, 229, 223, .92)),
    var(--blog-warm-pale);
}

.blog-card .blog-media {
  aspect-ratio: 4 / 5;
}

.blog-media::after {
  content: attr(data-fallback);
  position: absolute;
  inset: 0;
  z-index: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  color: var(--blog-blue-deep);
  font-size: .86rem;
  font-weight: 900;
  text-align: center;
}

.blog-media img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: var(--blog-warm-pale);
}

.blog-media.blog-image-error img {
  display: none;
}

.blog-card-body,
.blog-content-card,
.blog-product-callout,
.blog-cta,
.blog-related-body {
  padding: 18px;
}

.blog-card-title {
  margin: 0 0 8px;
  font-size: 1.12rem;
  line-height: 1.28;
}

.blog-card-title a:hover,
.blog-breadcrumb a:hover,
.blog-footer-link:hover {
  color: var(--blog-blue-deep);
}

.blog-card-desc,
.blog-text,
.blog-content-card li,
.blog-related-card p {
  color: var(--blog-muted);
}

.blog-card-desc {
  margin: 0 0 12px;
}

.blog-card-meta,
.blog-post-meta {
  color: var(--blog-soft);
  font-size: .86rem;
  font-weight: 800;
}

.blog-card-tags,
.blog-tags {
  margin: 12px 0 16px;
}

.blog-tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  border: 1px solid var(--blog-border);
  border-radius: 999px;
  padding: 5px 9px;
  background: var(--blog-blue-pale);
  color: var(--blog-blue-deep);
  font-size: .74rem;
  font-weight: 900;
}

.blog-tag.blog-tag-free {
  background: var(--blog-rose-pale);
  color: #9b4f47;
}

.blog-tag.blog-tag-guide {
  background: var(--blog-mint-pale);
  color: #3f8762;
}

.blog-button {
  border: 0;
  padding: 12px 18px;
  cursor: pointer;
}

.blog-button-primary {
  background: linear-gradient(135deg, var(--blog-blue-deep), var(--blog-blue-main));
  color: var(--blog-white);
  box-shadow: 0 10px 24px rgba(45, 111, 148, .22);
}

.blog-button-soft {
  border: 1px solid var(--blog-border);
  background: var(--blog-white);
  color: var(--blog-text);
}

.blog-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--blog-shadow);
}

.blog-empty {
  display: none;
  margin: 18px 0 0;
  padding: 18px;
  border: 1px dashed var(--blog-border);
  border-radius: var(--blog-radius);
  color: var(--blog-muted);
  background: rgba(255, 255, 255, .76);
  font-weight: 800;
  text-align: center;
}

.blog-empty.blog-show {
  display: block;
}

.blog-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 0 0 14px;
  color: var(--blog-soft);
  font-size: .9rem;
  font-weight: 750;
}

.blog-post-layout {
  display: grid;
  gap: 18px;
  max-width: 920px;
}

.blog-post-media {
  margin-top: 18px;
  max-width: 800px;
  margin-inline: auto;
  border-radius: 22px;
}

.blog-info-grid,
.blog-related-grid,
.blog-gallery {
  display: grid;
  gap: 14px;
}

.blog-info-grid {
  margin: 18px 0;
}

.blog-info-item {
  padding: 16px;
  border: 1px solid var(--blog-border);
  border-radius: var(--blog-radius);
  background: rgba(246, 251, 255, .82);
}

.blog-info-label {
  display: block;
  color: var(--blog-soft);
  font-size: .75rem;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.blog-info-value {
  display: block;
  margin-top: 4px;
  color: var(--blog-text);
  font-weight: 900;
}

.blog-content-card h2,
.blog-cta h2,
.blog-related-title {
  margin: 0 0 12px;
  color: var(--blog-text);
  font-size: 1.35rem;
  line-height: 1.25;
}

.blog-content-card p {
  color: var(--blog-muted);
}

.blog-list {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.blog-list li {
  position: relative;
  padding-left: 18px;
}

.blog-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--blog-mint);
}

.blog-abbrev {
  display: grid;
  gap: 8px;
  margin: 0;
}

.blog-abbrev div {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(153, 204, 255, .28);
}

.blog-abbrev dt {
  color: var(--blog-blue-deep);
  font-weight: 900;
}

.blog-abbrev dd {
  margin: 0;
  color: var(--blog-muted);
}

.blog-gallery {
  grid-template-columns: 1fr;
}

.blog-gallery .blog-media {
  border-radius: var(--blog-radius);
}

.blog-product-callout {
  border: 1px solid rgba(45, 111, 148, .2);
  border-radius: var(--blog-radius-lg);
  background:
    linear-gradient(135deg, rgba(246, 251, 255, .96), rgba(255, 247, 239, .96)),
    var(--blog-white);
  box-shadow: var(--blog-shadow-soft);
}

.blog-callout-kicker {
  margin: 0 0 8px;
  color: var(--blog-blue-deep);
  font-size: .74rem;
  font-weight: 900;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.blog-product-callout h2 {
  margin: 0 0 10px;
  color: var(--blog-text);
  font-size: 1.24rem;
  line-height: 1.3;
}

.blog-product-callout p:not(.blog-callout-kicker) {
  margin: 0 0 14px;
  color: var(--blog-muted);
}

.blog-cta {
  border-style: dashed;
  border-width: 2px;
  background:
    linear-gradient(135deg, rgba(225, 241, 255, .92), rgba(255, 229, 223, .82)),
    var(--blog-warm-pale);
}

.blog-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.blog-related-grid {
  margin-top: 12px;
}

.blog-related-card {
  overflow: hidden;
  border-radius: var(--blog-radius);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.blog-related-card:hover {
  transform: translateY(-2px);
  border-color: rgba(153, 204, 255, .72);
  box-shadow: var(--blog-shadow-soft);
}

.blog-related-card h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  line-height: 1.3;
}

/* =============================================
   READING PROGRESS BAR
   Được JS (blog.js) inject vào <body> khi ở trang bài viết.
   ============================================= */
.blog-reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 9999;
  background: rgba(153, 204, 255, .18);
  pointer-events: none;
}

.blog-reading-progress span {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--blog-blue-deep), var(--blog-blue-main));
  border-radius: 0 2px 2px 0;
  transition: width .1s linear;
}

/* =============================================
   BLOG RELATED POSTS - Layout bổ sung
   ============================================= */
.blog-related {
  /* Thừa hưởng style từ .blog-content-card */
}

.blog-related-title {
  margin: 0 0 4px;
  font-size: 1.08rem;
  color: var(--blog-text);
}

.blog-related-body {
  padding: 14px 16px;
  border: 1px solid var(--blog-border);
  border-radius: var(--blog-radius);
  background: rgba(246, 251, 255, .72);
  height: 100%;
  transition: background .2s ease, border-color .2s ease;
}

.blog-related-card:hover .blog-related-body {
  background: var(--blog-white);
  border-color: rgba(45, 111, 148, .38);
}

.blog-related-body p {
  margin: 4px 0 0;
  font-size: .88rem;
  color: var(--blog-muted);
  line-height: 1.5;
}

.blog-footer {
  border-top: 1px solid var(--blog-border);
  padding: 28px 0;
  background: rgba(255, 255, 255, .74);
}

.blog-footer-inner {
  display: flex;
  flex-direction: column;
  gap: 12px;
  color: var(--blog-muted);
  font-size: .9rem;
}

.blog-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

@media (min-width: 640px) {
  .blog-shell {
    padding-inline: 24px;
  }

  .blog-grid,
  .blog-gallery,
  .blog-related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .blog-info-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .blog-controls {
    grid-template-columns: minmax(260px, .8fr) 1fr;
    align-items: end;
  }

  .blog-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .blog-info-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .blog-gallery {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .blog-related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .blog-card {
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  }

  .blog-card:hover {
    transform: translateY(-3px);
    border-color: rgba(153, 204, 255, .72);
    box-shadow: var(--blog-shadow);
  }
}

@media (max-width: 520px) {
  .blog-header-inner {
    min-height: 68px;
  }

  .blog-brand-note {
    display: none;
  }

  .blog-logo {
    width: 46px;
    height: 46px;
    flex-basis: 46px;
  }

  .blog-nav-link {
    min-height: 36px;
    padding: 7px 10px;
    font-size: .82rem;
  }

  .blog-hero,
  .blog-panel,
  .blog-post-hero,
  .blog-content-card,
  .blog-cta {
    border-radius: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .blog-page *,
  .blog-page *::before,
  .blog-page *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}