/**
 * DEFCON Level, UI Components
 * Buttons, article headers, author bylines, copy-link button, content sections, feature lists, highlight boxes, FAQ items, and breadcrumbs.
 *
 * Part of the Defcon site CSS (builds on engine base theme).
 * Load order managed by config/site.php → site_css array.
 */

/* ================================================================
   BUTTONS
   ================================================================ */
.btn {
  display: inline-block;
  padding: var(--space-3) var(--space-6);
  border-radius: 6px;
  font-weight: 600;
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent-primary);
  color: var(--bg-primary);
  text-decoration: none;
  border-color: var(--accent-primary);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--bg-primary);
  border-color: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
  text-decoration: none;
}

.btn-secondary:hover {
  background: var(--bg-tertiary);
  border-color: var(--accent-primary);
  color: var(--text-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--accent-primary);
  border-color: var(--accent-primary);
  padding: var(--space-2) var(--space-3);
  text-decoration: none;
}

.btn-ghost:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

.btn-primary:active {
  box-shadow: 0 2px 6px rgba(14, 165, 233, 0.2);
}

/* Override .prose a / typography-polish.css cascade, prevents invisible text on colored buttons.
   .prose a sets color to accent cyan; on a cyan .btn-primary background that = invisible.
   Higher specificity with .prose prefix ensures buttons always show correct text color. */
/* Override .prose a underline on buttons, keep button's own border intact */
a.btn,
.prose a.btn { text-decoration: none; }
a.btn-primary,
a.btn-primary:visited,
a.btn-primary:active,
.prose a.btn-primary,
.prose a.btn-primary:visited,
.prose a.btn-primary:hover { color: var(--bg-primary); }
a.btn-primary:hover { color: var(--bg-primary); }
a.btn-secondary,
a.btn-secondary:visited,
.prose a.btn-secondary,
.prose a.btn-secondary:visited { color: var(--text-primary); }
a.btn-secondary:hover,
.prose a.btn-secondary:hover { color: var(--text-primary); }
a.btn-ghost,
a.btn-ghost:visited,
.prose a.btn-ghost,
.prose a.btn-ghost:visited { color: var(--accent-primary); }
a.btn-ghost:hover,
.prose a.btn-ghost:hover { color: var(--accent-hover); }

.article-header {
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--border-subtle);
  text-align: left;
}

.article-header h1 {
  font-size: var(--text-3xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--text-primary);
}

/* ===== Substack-style Author Byline ===== */
.alert-byline {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  margin-top: var(--space-4);
  flex-wrap: wrap;
}

.byline-authors {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.byline-author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.byline-avatar {
  display: block;
  flex-shrink: 0;
}

.byline-avatar img {
  max-width: 44px;
  max-height: 44px;
  width: auto;
  height: auto;
  border-radius: 50%;
  object-fit: cover;
  object-position: center;
  border: 2px solid rgba(14, 165, 233, 0.3);
  transition: border-color 0.2s ease;
}

.byline-avatar:hover img {
  border-color: var(--accent-primary);
}

.byline-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.byline-name {
  color: var(--text-primary);
  font-weight: 600;
  font-size: var(--text-base);
  text-decoration: none;
  transition: color 0.2s ease;
}

.byline-name:hover {
  color: var(--accent-primary);
}

.byline-separator {
  color: var(--text-muted);
  font-size: var(--text-sm);
  margin: 0 var(--space-1);
}

.byline-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-muted);
  font-size: var(--text-sm);
}

.byline-meta time {
  color: var(--text-secondary);
}

/* Copy Link Button */
.copy-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.75rem;
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-left: var(--space-2);
}

.copy-link-btn:hover {
  background: var(--bg-tertiary);
  border-color: var(--border-medium);
  color: var(--text-primary);
}

.copy-link-btn:active {
  transform: scale(0.98);
}

.copy-link-btn svg {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
}

.copy-link-btn.copied {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: white;
}

.copy-link-btn.copied .copy-link-text {
  display: none;
}

.copy-link-btn.copied::after {
  content: "Copied!";
  font-size: var(--text-sm);
}

@media (max-width: 640px) {
  .copy-link-btn {
    padding: 0.375rem;
    margin-left: var(--space-1);
  }

  .copy-link-text {
    display: none;
  }

  .copy-link-btn svg {
    width: 18px;
    height: 18px;
  }
}

/* Multiple authors stacked on mobile */
@media (max-width: 480px) {
  .alert-byline {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  .byline-authors {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  .byline-separator {
    display: none;
  }
}

/* Tighten page header spacing */
.page-header {
  margin-bottom: 0.5rem !important;
}

/* content-section base styles now in core.css canonical rules */
.content-section {
  border-top: none !important;
}

.feature-list {
  list-style: none;
  padding: 0;
}

.feature-list li {
  padding: var(--space-3) 0;
  padding-left: var(--space-6);
  position: relative;
  border-bottom: 1px solid var(--border-subtle);
}

.feature-list li:last-child {
  border-bottom: none;
}

/* .feature-list li::before consolidated in page-levels.css */

.highlight-box {
  background: var(--bg-tertiary);
  padding: var(--space-4);
  border-radius: 6px;
  border-left: 3px solid var(--accent-primary);
}


/* Breadcrumb */
.breadcrumb {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-4);
}

.breadcrumb a {
  color: var(--text-secondary);
}

.breadcrumb a:hover {
  color: var(--accent-primary);
}


/* ================================================================
   SUB-NAV STRIPS, horizontal topic tabs for page clusters
   Site-wide strip: .site-subnav (hub pages: homepage, current-level)
   Cluster strips: .financial-subnav (financial pages)
   Pattern: solid bg, centered, mobile scroll, visited-color fix
   Architecture: ai/SITE-ARCHITECTURE.md → Sub-Navigation Strips
   ================================================================ */
.site-subnav + .financial-subnav,
.site-subnav + .cyber-subnav,
.site-subnav + .cluster-subnav {
  margin-top: 0;
  border-top: 1px solid var(--border-subtle);
  border-radius: 0;
  font-size: 0.8rem;
}
.site-subnav:has(+ .financial-subnav),
.site-subnav:has(+ .cyber-subnav),
.site-subnav:has(+ .cluster-subnav) {
  margin-bottom: 0;
  border-radius: var(--radius, 0.5rem) var(--radius, 0.5rem) 0 0;
}
.site-subnav,
.financial-subnav,
.cyber-subnav,
.cluster-subnav {
  margin-bottom: var(--space-4);
  background: var(--bg-card, #1e293b);
  border-bottom: 1px solid var(--border-subtle);
  border-radius: var(--radius, 0.5rem) var(--radius, 0.5rem) 0 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding: var(--space-2) 0;
}
.site-subnav::-webkit-scrollbar,
.financial-subnav::-webkit-scrollbar,
.cyber-subnav::-webkit-scrollbar,
.cluster-subnav::-webkit-scrollbar {
  display: none;
}
.site-subnav__inner,
.financial-subnav__inner,
.cyber-subnav__inner,
.cluster-subnav__inner {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0;
}
.site-subnav__item,
.site-subnav__item:visited,
.financial-subnav__item,
.financial-subnav__item:visited,
.cyber-subnav__item,
.cyber-subnav__item:visited,
.cluster-subnav__item,
.cluster-subnav__item:visited {
  padding: 0.5rem 0.75rem;
  font-size: var(--text-sm);
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
  flex-shrink: 0;
}
.site-subnav__item:hover,
.financial-subnav__item:hover,
.cyber-subnav__item:hover,
.cluster-subnav__item:hover {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
}
.site-subnav__item--active,
.site-subnav__item--active:visited,
.financial-subnav__item--active,
.financial-subnav__item--active:visited,
.cyber-subnav__item--active,
.cyber-subnav__item--active:visited,
.cluster-subnav__item--active,
.cluster-subnav__item--active:visited {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
  font-weight: 600;
}
@media (max-width: 768px) {
  .site-subnav__item,
  .financial-subnav__item,
  .cyber-subnav__item,
  .cluster-subnav__item {
    padding: 0.4rem 0.6rem;
    font-size: var(--text-xs);
  }
}
/* ================================================================
   CARD GRID, canonical definition (site-wide)
   ================================================================ */
.card-grid {
  display: grid;
  gap: var(--space-4);
  margin: var(--space-4) 0;
}

.card-grid--2col { grid-template-columns: repeat(2, 1fr); }
.card-grid--3col { grid-template-columns: repeat(3, 1fr); }
.card-grid--4col { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
  .card-grid--2col,
  .card-grid--3col,
  .card-grid--4col {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .card-grid--3col,
  .card-grid--4col {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ================================================================
   BLIP, Command card preview (homepage + current-level)
   ================================================================ */
.blip-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-5);
  margin-top: var(--space-4);
}

.blip {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: var(--space-5);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  transition: all 0.2s;
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  overflow: visible;
  min-width: 0;
}

.blip:hover {
  border-color: var(--accent-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  background: rgba(14, 165, 233, 0.06);
}

/* Live price flash, brief cyan highlight on load */
.live-price--flash {
    animation: livePriceFlash 1.5s ease-out;
}
@keyframes livePriceFlash {
    0% { background: rgba(14, 165, 233, 0.3); border-radius: 2px; }
    100% { background: transparent; }
}