@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,400..700;1,6..72,400..700&family=Plus+Jakarta+Sans:wght@400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root {
  --font-serif: 'Newsreader', Georgia, Cambria, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --usa-blue: #0056B3;
  --usa-dark-blue: #0A2540;
  --abc-red: #D90429;
}

body {
  font-family: var(--font-sans);
  background-color: #F8F9FA;
  color: #0F172A;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.font-editorial {
  font-family: var(--font-serif);
  font-feature-settings: "liga", "kern";
}

.font-mono-numbers {
  font-family: var(--font-mono);
  font-feature-settings: "tnum";
}

/* Scrollbar utilities */
.scrollbar-none::-webkit-scrollbar {
  display: none;
}
.scrollbar-none {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

/* Smooth transitions */
.transition-smooth {
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* USA Today & ABC News Card Elevations */
.card-hover {
  transition: transform 0.22s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.22s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.22s ease;
}
.card-hover:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 32px -8px rgba(15, 23, 42, 0.08), 0 4px 12px -2px rgba(15, 23, 42, 0.04);
  border-color: #CBD5E1;
}

/* Smart Brevity Callout Box */
.why-it-matters-box {
  background: #FEF3C7;
  border-left: 4px solid #D97706;
}

/* ABC News Live Pulse */
@keyframes pulseRedDot {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.35);
    opacity: 0.6;
  }
}
.animate-pulse-red {
  animation: pulseRedDot 1.6s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Sound Wave Animation for 60s Brief */
@keyframes soundWave {
  0%, 100% {
    height: 4px;
  }
  50% {
    height: 16px;
  }
}
.wave-bar {
  width: 3px;
  background-color: currentColor;
  border-radius: 9999px;
  display: inline-block;
}
.wave-playing .wave-bar:nth-child(1) { animation: soundWave 0.8s ease-in-out infinite; }
.wave-playing .wave-bar:nth-child(2) { animation: soundWave 0.6s ease-in-out 0.2s infinite; }
.wave-playing .wave-bar:nth-child(3) { animation: soundWave 0.9s ease-in-out 0.4s infinite; }
.wave-playing .wave-bar:nth-child(4) { animation: soundWave 0.7s ease-in-out 0.1s infinite; }

/* Horizontal Carousel Snap */
.carousel-snap {
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
.carousel-snap-item {
  scroll-snap-align: start;
}

/* Shimmer animation on refresh */
@keyframes crossFadeShimmer {
  from {
    opacity: 0.75;
    transform: translateY(2px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.animate-cross-fade {
  animation: crossFadeShimmer 0.35s ease-out forwards;
}

/* Channel Header Active Pill */
.channel-pill {
  position: relative;
  transition: all 0.2s ease;
}
.channel-pill.active {
  color: #0F172A;
  font-weight: 700;
}
.dark .channel-pill.active {
  color: #FFFFFF;
}
.channel-pill.active::after {
  content: '';
  position: absolute;
  bottom: -9px;
  left: 0;
  right: 0;
  height: 3px;
  background-color: #0056B3;
  border-radius: 2px 2px 0 0;
}
.dark .channel-pill.active::after {
  background-color: #38BDF8;
}

/* Dark Mode Callout Overrides */
.dark .why-it-matters-box {
  background: rgba(180, 83, 9, 0.15);
  border-left: 4px solid #F59E0B;
}
.dark .why-it-matters-box p {
  color: #FEF3C7;
}

/* Focus States for WCAG 2.1 AAA Accessibility */
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid #2563EB;
  outline-offset: 2px;
}
.dark a:focus-visible, .dark button:focus-visible, .dark input:focus-visible {
  outline: 2px solid #60A5FA;
}