/* ── BOTWAVEBOMBA — Mobile-First Responsive Styles ── */
/* Mobile-first CSS — Ground News competitor UX */
/* Touch targets 44px+, skeleton loaders, responsive grid */

/* ── MOBILE BASE (0-640px) ── */
@media (max-width: 640px) {
  /* Body scroll lock for pull-to-refresh */
  body.mobile-ready {
    overscroll-behavior-y: contain;
  }

  /* ── HEADER: Compact mobile layout ── */
  .bwb-header-inner {
    padding: 0 12px;
    height: 48px;
    flex-wrap: wrap;
  }

  .bwb-logo-lockup {
    flex: 1;
    min-width: 0;
  }

  .bwb-logo {
    font-size: 14px;
    letter-spacing: 0.1em;
  }

  .bwb-tagline {
    font-size: 9px;
    color: var(--text-muted);
    display: none; /* Hide on mobile - save space */
  }

  .bwb-header-right {
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .bwb-pipeline-badge {
    font-size: 9px;
    padding: 2px 6px;
  }

  .bwb-topnav {
    display: none; /* Hide top nav on mobile - use bottom bar */
  }

  /* ── STATS BAR: Horizontal scroll ── */
  .bwb-stats-bar {
    display: flex;
    overflow-x: auto;
    scrollbar-width: none;
    padding: 8px 12px;
    gap: 16px;
    -webkit-overflow-scrolling: touch;
  }

  .bwb-stats-bar::-webkit-scrollbar {
    display: none;
  }

  .bwb-stat {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .bwb-stat-divider {
    display: none; /* Remove vertical dividers on mobile scroll */
  }

  .bwb-stat-number {
    font-size: 18px;
    font-weight: 700;
  }

  .bwb-stat-label {
    font-size: 9px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
  }

  /* ── LEGEND BAR: Compact mobile ── */
  .bwb-legend-bar {
    padding: 8px 12px;
    flex-wrap: wrap;
    gap: 8px;
  }

  .bwb-legend-item {
    font-size: 11px;
    flex-basis: calc(50% - 4px);
  }

  /* ── SECTION TABS: Horizontal scroll ── */
  .bwb-section-tabs {
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
    padding: 0 12px;
  }

  .bwb-section-tabs::-webkit-scrollbar {
    display: none;
  }

  .bwb-section-tabs button {
    display: inline-flex;
    padding: 12px 16px;
    font-size: 13px;
    border: none;
    border-radius: 20px;
    background: var(--bg-card);
    margin-right: 8px;
    transition: all 0.2s ease;
  }

  .bwb-section-tabs button.active {
    background: var(--theme-primary);
    color: #fff;
  }

  /* ── SIGNAL FILTERS: Wrap on mobile ── */
  .bwb-signal-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 8px 12px;
  }

  .bwb-signal-filters button {
    font-size: 12px;
    padding: 8px 14px;
    border-radius: 16px;
    min-height: 36px; /* Touch-friendly */
  }

  /* ── STORY GRID: Single column ── */
  .bwb-story-grid {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 12px;
  }

  /* ── STORY CARD: Mobile optimized ── */
  .bwb-story-card {
    border-radius: 12px;
    overflow: hidden;
    min-height: 44px; /* Touch target baseline */
  }

  .bwb-story-card__header {
    padding: 12px;
  }

  .bwb-story-card__title {
    font-size: 15px;
    line-height: 1.4;
    margin-bottom: 8px;
  }

  .bwb-story-card__meta {
    font-size: 11px;
    gap: 8px;
  }

  /* Coverage bar - mobile visible */
  .bwb-coverage-bar {
    height: 6px;
    border-radius: 3px;
    margin: 8px 0;
  }

  .bwb-coverage-segment {
    min-width: 4px; /* Visible even on small bars */
  }

  /* Source pills - horizontal scroll */
  .bwb-source-pills {
    overflow-x: auto;
    scrollbar-width: none;
    padding: 4px 0;
    -webkit-overflow-scrolling: touch;
  }

  .bwb-source-pills::-webkit-scrollbar {
    display: none;
  }

  .bwb-source-pill {
    font-size: 10px;
    padding: 4px 8px;
    min-height: 28px;
  }

  /* ── BLINDSPOT BADGE: High contrast ── */
  .bwb-blindspot-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    font-size: 10px;
    padding: 4px 8px;
    min-height: 28px;
  }

  /* ── ARTICLE STRIP: Swipeable ── */
  .bwb-article-strip {
    gap: 6px;
    padding: 8px 12px;
  }

  .bwb-article-link {
    width: 70px;
  }

  .bwb-article-thumb {
    width: 70px;
    height: 45px;
  }

  .bwb-article-src {
    font-size: 9px;
    max-width: 70px;
  }

  /* ── BOTTOM NAV: Mobile thumb bar ── */
  .bwb-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 56px;
    background: var(--bg-card);
    border-top: 1px solid var(--border-default);
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 1000;
    padding-bottom: env(safe-area-inset-bottom);
  }

  .bwb-bottom-nav a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    font-size: 10px;
    color: var(--text-muted);
    padding: 4px 12px;
    min-width: 44px;
    min-height: 44px;
    justify-content: center;
  }

  .bwb-bottom-nav a.active {
    color: var(--theme-primary);
  }

  .bwb-bottom-nav-icon {
    font-size: 20px;
    line-height: 1;
  }

  /* ── SKELETON LOADER ── */
  .skeleton {
    background: linear-gradient(
      90deg,
      var(--bg-card) 0%,
      var(--bg-hover) 50%,
      var(--bg-card) 100%
    );
    background-size: 200% 100%;
    animation: skeleton-pulse 1.5s ease-in-out infinite;
    border-radius: 4px;
  }

  .skeleton-text {
    height: 16px;
    margin-bottom: 8px;
  }

  .skeleton-title {
    height: 24px;
    margin-bottom: 12px;
  }

  .skeleton-card {
    padding: 16px;
    border-radius: 12px;
    margin-bottom: 12px;
  }

  @keyframes skeleton-pulse {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
  }

  /* ── PULL TO REFRESH INDICATOR ── */
  .ptr-indicator {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 0;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-default);
    overflow: hidden;
    transition: height 0.2s ease;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .ptr-indicator.active {
    height: 48px;
  }

  .ptr-spinner {
    width: 24px;
    height: 24px;
    border: 2px solid var(--border-default);
    border-top-color: var(--theme-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
  }

  @keyframes spin {
    to { transform: rotate(360deg); }
  }

  /* ── LAZY LOAD PLACEHOLDER ── */
  .lazy-image {
    background: var(--bg-hover);
    min-height: 120px;
    position: relative;
    overflow: hidden;
  }

  .lazy-image::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 24px;
    height: 24px;
    border: 2px solid var(--border-default);
    border-top-color: var(--theme-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
  }

  .lazy-image.loaded::before {
    display: none;
  }

  /* ── TOUCH OPTIMIZATIONS ── */
  button, a, [role="button"] {
    min-height: 44px;
    min-width: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  /* Remove 300ms tap delay */
  .touch-target {
    touch-action: manipulation;
  }

  /* ── SAFE AREA INSETS (iPhone X+) ── */
  .safe-top {
    padding-top: env(safe-area-inset-top);
  }

  .safe-bottom {
    padding-bottom: env(safe-area-inset-bottom);
  }
}

/* ── TABLET (641-1024px) ── */
@media (min-width: 641px) and (max-width: 1024px) {
  .bwb-story-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    padding: 16px;
  }

  .bwb-header-inner {
    padding: 0 20px;
  }

  .bwb-stats-bar {
    justify-content: center;
    flex-wrap: wrap;
  }

  .bwb-bottom-nav {
    display: none; /* Show top nav on tablet */
  }

  .bwb-topnav {
    display: flex;
  }
}

/* ── DESKTOP (1025px+) ── */
@media (min-width: 1025px) {
  .bwb-story-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    padding: 20px;
    max-width: 1400px;
    margin: 0 auto;
  }

  .bwb-bottom-nav {
    display: none;
  }
}

/* ── REDUCED MOTION ── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ── HIGH CONTRAST MODE ── */
@media (prefers-contrast: high) {
  :root {
    --border-default: rgba(255,255,255,0.40);
    --text-muted: rgba(255,255,255,0.60);
  }

  .bwb-story-card {
    border: 1px solid var(--border-default);
  }
}

/* ── OFFLINE INDICATOR ── */
body.offline::after {
  content: 'OFFLINE';
  position: fixed;
  bottom: 64px;
  left: 50%;
  transform: translateX(-50%);
  background: #8b0000;
  color: #fff;
  padding: 6px 12px;
  border-radius: 16px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  z-index: 999;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* ── PWA INSTALL PROMPT STYLING ── */
.pwa-install-prompt {
  position: fixed;
  bottom: 64px;
  left: 12px;
  right: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: 12px;
  padding: 16px;
  z-index: 998;
  box-shadow: 0 4px 24px rgba(0,0,0,0.4);
}

.pwa-install-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pwa-install-content p {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
}

.pwa-install-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

.pwa-install-actions button {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  min-height: 40px;
  cursor: pointer;
}

#pwa-install-btn {
  background: var(--theme-primary);
  color: #fff;
  border: none;
}

#pwa-dismiss-btn {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-default);
}