/* page-specific styles for .page-news */
.page-news {
  --page-news-toc-width: 220px;
  --page-news-gap: var(--spacing-xl, 2rem);
  --page-news-card-min-width: 280px;
  background-color: var(--color-bg-dark, #0D0D0D);
  color: var(--color-text-primary, #FFFFFF);
  font-family: var(--font-body, 'Helvetica Neue', Arial, sans-serif);
  line-height: var(--weight-body, 1.6);
}

/* layout: fixed left toc + right content */
.page-news__layout {
  display: flex;
  flex-direction: column;
  gap: var(--page-news-gap);
  padding: var(--spacing-lg, 1.2rem) var(--spacing-md, 1rem);
  max-width: var(--max-width, 1280px);
  margin: 0 auto;
}

@media (min-width: 768px) {
  .page-news__layout {
    flex-direction: row;
    gap: var(--spacing-xl, 2rem);
    padding: var(--spacing-xl, 2rem) var(--spacing-lg, 1.2rem);
  }
}

/* toc styling */
.page-news__toc {
  position: sticky;
  top: var(--spacing-lg, 1.2rem);
  align-self: flex-start;
  width: 100%;
  background-color: var(--color-bg-card, #1A1A1A);
  border: var(--border-width-thick, 4px) solid var(--color-border, #333333);
  padding: var(--spacing-md, 1rem);
  box-shadow: var(--shadow-heavy, 0 8px 32px rgba(0,0,0,0.6));
}

@media (min-width: 768px) {
  .page-news__toc {
    width: var(--page-news-toc-width);
    flex-shrink: 0;
    min-height: 200px;
  }
}

.page-news__toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm, 0.5rem);
}

.page-news__toc-link {
  display: block;
  padding: var(--spacing-sm, 0.5rem) 0;
  font-family: var(--font-heading, Impact, Arial Black, sans-serif);
  font-weight: var(--weight-heading, 900);
  text-transform: uppercase;
  color: var(--color-text-secondary, #B0B0B0);
  text-decoration: none;
  border-left: var(--border-width-thin, 1px) solid transparent;
  padding-left: var(--spacing-xs, 0.25rem);
  transition: color var(--transition-fast, 0.15s ease), border-color var(--transition-fast, 0.15s ease);
}

.page-news__toc-link:hover,
.page-news__toc-link:focus-visible {
  color: var(--color-primary, #FF4500);
  border-left-color: var(--color-primary, #FF4500);
}

/* toc link highligh (js later) */
.page-news__toc-link[data-active] {
  color: var(--color-primary, #FF4500);
  border-left-color: var(--color-primary, #FF4500);
}

/* content area */
.page-news__content {
  flex: 1;
  min-width: 0;
}

/* breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs, 0.25rem);
  font-size: var(--scale-small, 0.875rem);
  margin-bottom: var(--spacing-md, 1rem);
  color: var(--color-text-secondary, #B0B0B0);
}

.breadcrumb__link {
  color: var(--color-secondary, #00BFFF);
  text-decoration: none;
  transition: color var(--transition-fast, 0.15s ease);
}

.breadcrumb__link:hover {
  color: var(--color-secondary-hover, #009ACD);
}

.breadcrumb__sep {
  color: var(--color-border, #333333);
}

.breadcrumb__current {
  color: var(--color-text-primary, #FFFFFF);
}

/* page title */
.page-news__title {
  font-family: var(--font-heading, Impact, Arial Black, sans-serif);
  font-weight: var(--weight-heading, 900);
  text-transform: uppercase;
  font-size: var(--scale-h1, 2.2rem);
  margin: 0 0 var(--spacing-xl, 2rem) 0;
  padding-bottom: var(--spacing-md, 1rem);
  border-bottom: var(--border-width-thick, 4px) solid var(--color-primary, #FF4500);
  color: var(--color-text-primary, #FFFFFF);
  letter-spacing: 0.05em;
}

/* sections */
.page-news__section {
  margin-bottom: var(--spacing-2xl, 4rem);
  scroll-margin-top: var(--spacing-lg, 1.2rem);
}

.page-news__section-heading {
  font-family: var(--font-heading, Impact, Arial Black, sans-serif);
  font-weight: var(--weight-heading, 900);
  text-transform: uppercase;
  font-size: var(--scale-h2, 1.6rem);
  color: var(--color-accent, #FFD700);
  margin: 0 0 var(--spacing-lg, 1.2rem) 0;
  padding-left: var(--spacing-sm, 0.5rem);
  border-left: var(--border-width-thick, 4px) solid var(--color-accent, #FFD700);
}

/* article cards grid */
.page-news__cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(var(--page-news-card-min-width), 1fr));
  gap: var(--spacing-lg, 1.2rem);
}

/* flip card */
.page-news__card {
  perspective: 1000px;
  height: 320px;
  cursor: pointer;
  border: var(--border-width-thick, 4px) solid var(--color-border, #333333);
  background-color: transparent;
  transition: box-shadow var(--transition-base, 0.25s ease);
}

.page-news__card:hover,
.page-news__card:focus-within {
  box-shadow: var(--shadow-glow, 0 0 20px rgba(255,69,0,0.3));
  border-color: var(--color-border-active, #FF4500);
}

.page-news__card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform var(--transition-base, 0.25s ease);
  transform-style: preserve-3d;
}

.page-news__card:hover .page-news__card-inner,
.page-news__card:focus-within .page-news__card-inner {
  transform: rotateY(180deg);
}

.page-news__card-front,
.page-news__card-back {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: 0; /* sharp edges */
  overflow: hidden;
}

.page-news__card-front {
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  background-color: var(--color-bg-card, #1A1A1A);
}

.page-news__card-back {
  transform: rotateY(180deg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md, 1rem);
  background-color: var(--color-bg-dark, #0D0D0D);
  border: var(--border-width-thin, 1px) solid var(--color-border, #333333);
}

.page-news__card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  max-width: 100%;
}

.page-news__card-num {
  position: absolute;
  top: var(--spacing-sm, 0.5rem);
  left: var(--spacing-sm, 0.5rem);
  font-family: var(--font-numeric, 'Courier New', monospace);
  font-size: var(--scale-h3, 1.25rem);
  font-weight: var(--weight-heading, 900);
  color: var(--color-accent, #FFD700);
  background-color: rgba(0,0,0,0.7);
  padding: 0.2rem 0.5rem;
  line-height: 1;
  z-index: 3;
}

.page-news__card-title {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  margin: 0;
  padding: var(--spacing-sm, 0.5rem) var(--spacing-md, 1rem);
  font-family: var(--font-heading, Impact, Arial Black, sans-serif);
  font-weight: var(--weight-heading, 900);
  font-size: var(--scale-body, 1rem);
  color: var(--color-text-primary, #FFFFFF);
  background: linear-gradient(transparent, rgba(0,0,0,0.8));
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.page-news__card-summary {
  margin: 0;
  font-size: var(--scale-small, 0.875rem);
  line-height: 1.5;
  color: var(--color-text-primary, #FFFFFF);
  text-align: center;
}

/* data section */
.page-news__data-note {
  color: var(--color-text-secondary, #B0B0B0);
  margin: 0 0 var(--spacing-md, 1rem) 0;
  font-style: italic;
}

.page-news__chart-wrapper {
  position: relative;
  border: var(--border-width-thick, 4px) solid var(--color-border, #333333);
  background-color: var(--color-bg-card, #1A1A1A);
  padding: var(--spacing-md, 1rem);
  overflow: hidden;
}

.page-news__chart {
  position: relative;
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
}

.page-news__chart-img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: contain;
}

.page-news__chart-tooltip {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: rgba(0,0,0,0.85);
  border: 1px solid var(--color-accent, #FFD700);
  padding: var(--spacing-sm, 0.5rem) var(--spacing-md, 1rem);
  color: var(--color-text-primary, #FFFFFF);
  font-size: var(--scale-small, 0.875rem);
  opacity: 0;
  transition: opacity var(--transition-base, 0.25s ease);
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs, 0.25rem);
}

.page-news__chart:hover .page-news__chart-tooltip,
.page-news__chart:focus-within .page-news__chart-tooltip {
  opacity: 1;
}

.page-news__tooltip-line {
  font-family: var(--font-body, 'Helvetica Neue', Arial, sans-serif);
  font-weight: var(--weight-body, 400);
}

.page-news__tooltip-value {
  font-family: var(--font-numeric, 'Courier New', monospace);
  color: var(--color-accent, #FFD700);
  font-weight: var(--weight-heading, 900);
}

.page-news__chart-insight {
  margin-top: var(--spacing-md, 1rem);
  padding: var(--spacing-md, 1rem);
  background-color: var(--color-bg-dark, #0D0D0D);
  border-left: var(--border-width-thick, 4px) solid var(--color-secondary, #00BFFF);
}

.page-news__chart-insight p {
  margin: 0;
  font-size: var(--scale-body, 1rem);
  line-height: 1.6;
}

/* mobile adjustments */
@media (max-width: 767px) {
  .page-news__toc {
    position: relative;
    top: 0;
    width: 100%;
  }
  .page-news__cards {
    grid-template-columns: 1fr;
  }
  .page-news__card {
    height: 260px;
  }
  .page-news__card-title {
    font-size: 0.9rem;
  }
  .page-news__section-heading {
    font-size: var(--scale-h3, 1.25rem);
  }
}