/* YH Blog core content blocks — scoped to article body */
.post-content .yh-block,
.page-content .yh-block,
.steady-content .yh-block,
.vivid-content .yh-block,
.corp-content .yh-block,
.diary-content .yh-block,
.neon-article .yh-block {
  margin: 1.5rem 0;
}

/* Gallery */
.post-content .yh-gallery,
.page-content .yh-gallery {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.post-content .yh-gallery[data-columns="2"],
.page-content .yh-gallery[data-columns="2"] {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.post-content .yh-gallery[data-columns="4"],
.page-content .yh-gallery[data-columns="4"] {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.post-content .yh-gallery__item,
.page-content .yh-gallery__item {
  margin: 0;
  overflow: hidden;
  border-radius: 8px;
  background: var(--color-bg, #f3f4f6);
}

.post-content .yh-gallery__item img,
.page-content .yh-gallery__item img {
  display: block;
  width: 100%;
  height: auto;
  margin: 0;
  border-radius: 0;
  transition: transform 0.2s ease;
}

.post-content .yh-gallery__link:hover img,
.page-content .yh-gallery__link:hover img {
  transform: scale(1.03);
}

.post-content .yh-gallery__item figcaption,
.page-content .yh-gallery__item figcaption {
  padding: 0.5rem 0.65rem;
  font-size: 0.85rem;
  color: var(--color-muted, #666);
  text-align: center;
}

@media (max-width: 768px) {
  .post-content .yh-gallery,
  .page-content .yh-gallery {
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
  }
}

@media (max-width: 480px) {
  .post-content .yh-gallery,
  .page-content .yh-gallery {
    grid-template-columns: 1fr !important;
  }
}

/* Callout */
.post-content .yh-callout,
.page-content .yh-callout {
  padding: 1rem 1.15rem 1rem 1rem;
  border-radius: 8px;
  border-left: 4px solid var(--color-primary, #2563eb);
  background: color-mix(in srgb, var(--color-primary, #2563eb) 8%, transparent);
}

.post-content .yh-callout__title,
.page-content .yh-callout__title {
  font-weight: 600;
  margin: 0 0 0.35rem;
}

.post-content .yh-callout__body,
.page-content .yh-callout__body {
  margin: 0;
  line-height: 1.65;
}

.post-content .yh-callout--info,
.page-content .yh-callout--info {
  border-left-color: #2563eb;
  background: color-mix(in srgb, #2563eb 10%, transparent);
}

.post-content .yh-callout--success,
.page-content .yh-callout--success {
  border-left-color: #16a34a;
  background: color-mix(in srgb, #16a34a 10%, transparent);
}

.post-content .yh-callout--warning,
.page-content .yh-callout--warning {
  border-left-color: #d97706;
  background: color-mix(in srgb, #d97706 12%, transparent);
}

.post-content .yh-callout--error,
.page-content .yh-callout--error {
  border-left-color: #dc2626;
  background: color-mix(in srgb, #dc2626 10%, transparent);
}

/* Button */
.post-content .yh-button-wrap,
.page-content .yh-button-wrap {
  text-align: center;
  margin: 1.75rem 0;
}

.post-content .yh-button,
.page-content .yh-button {
  display: inline-block;
  padding: 0.65rem 1.35rem;
  border-radius: 6px;
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.post-content .yh-button:hover,
.page-content .yh-button:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

.post-content .yh-button--primary,
.page-content .yh-button--primary {
  background: var(--color-primary, #2563eb);
  color: #fff !important;
}

.post-content .yh-button--outline,
.page-content .yh-button--outline {
  border: 2px solid var(--color-primary, #2563eb);
  color: var(--color-primary, #2563eb) !important;
  background: transparent;
}

.post-content .yh-button--ghost,
.page-content .yh-button--ghost {
  background: var(--color-bg, #f3f4f6);
  color: var(--color-text, #1a1a1a) !important;
}

/* Download card */
.post-content .yh-download__link,
.page-content .yh-download__link {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1rem 1.15rem;
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: 8px;
  text-decoration: none;
  color: inherit;
  background: var(--color-surface, #fff);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.post-content .yh-download__link:hover,
.page-content .yh-download__link:hover {
  border-color: var(--color-primary, #2563eb);
  box-shadow: 0 2px 12px color-mix(in srgb, var(--color-primary, #2563eb) 15%, transparent);
}

.post-content .yh-download__icon,
.page-content .yh-download__icon {
  flex-shrink: 0;
  width: 2.25rem;
  height: 2.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  background: var(--color-primary, #2563eb);
  color: #fff;
  font-size: 1.1rem;
  font-weight: 700;
}

.post-content .yh-download__text,
.page-content .yh-download__text {
  font-weight: 600;
}

.post-content .yh-download__meta,
.page-content .yh-download__meta {
  margin-left: auto;
  font-size: 0.85rem;
  color: var(--color-muted, #666);
}

/* Accordion */
.post-content .yh-accordion__item,
.page-content .yh-accordion__item {
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: 8px;
  margin-bottom: 0.5rem;
  overflow: hidden;
}

.post-content .yh-accordion__item summary,
.page-content .yh-accordion__item summary {
  padding: 0.85rem 1rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.post-content .yh-accordion__item summary::-webkit-details-marker,
.page-content .yh-accordion__item summary::-webkit-details-marker {
  display: none;
}

.post-content .yh-accordion__item summary::after,
.page-content .yh-accordion__item summary::after {
  content: "+";
  float: right;
  font-weight: 400;
  color: var(--color-muted, #666);
}

.post-content .yh-accordion__item[open] summary::after,
.page-content .yh-accordion__item[open] summary::after {
  content: "−";
}

.post-content .yh-accordion__body,
.page-content .yh-accordion__body {
  padding: 0 1rem 1rem;
  line-height: 1.65;
  color: var(--color-muted, #555);
}

/* Lightbox overlay */
.yh-lightbox {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: rgba(0, 0, 0, 0.88);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.yh-lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

.yh-lightbox__img {
  max-width: min(96vw, 1200px);
  max-height: 90vh;
  object-fit: contain;
  border-radius: 4px;
}

.yh-lightbox__close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 2.5rem;
  height: 2.5rem;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}

.yh-lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 2.75rem;
  height: 2.75rem;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 1.25rem;
  cursor: pointer;
}

.yh-lightbox__nav--prev { left: 1rem; }
.yh-lightbox__nav--next { right: 1rem; }

.yh-lightbox__caption {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  max-width: 90%;
  color: #eee;
  font-size: 0.9rem;
  text-align: center;
}