* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: system-ui, sans-serif; background: #1a1a2e; color: #eee; line-height: 1.6; }
header { text-align: center; padding: 2rem; background: linear-gradient(135deg, #16213e, #0f3460); }
h1 { font-size: 2rem; margin-bottom: 0.5rem; }
.subtitle { color: #a0a0a0; font-size: 1.1rem; }
main { max-width: 900px; margin: 0 auto; padding: 2rem; }
section { margin-bottom: 3rem; }
h2 { color: #e94560; margin-bottom: 1rem; border-bottom: 2px solid #e94560; padding-bottom: 0.5rem; }

/* Client type indicators */
.client-types { display: flex; gap: 1rem; margin: 1rem 0; flex-wrap: wrap; }
.client-type { flex: 1; min-width: 280px; padding: 1rem; border-radius: 8px; }
.outbox-type { background: rgba(74, 222, 128, 0.15); border: 2px solid #4ade80; }
.legacy-type { background: rgba(251, 146, 60, 0.15); border: 2px solid #fb923c; }
.dot { display: inline-block; width: 12px; height: 12px; border-radius: 50%; margin-right: 8px; }
.outbox-dot { background: #4ade80; }
.legacy-dot { background: #fb923c; }
.client-type p { margin-top: 0.5rem; font-size: 0.9rem; color: #ccc; }
.client-type .users { color: #888; font-size: 0.85rem; }
.warning-text { margin-top: 1rem; font-size: 1.1rem; }

/* Name highlighting */
.outbox-name { color: #4ade80; font-weight: bold; }
.legacy-name { color: #fb923c; font-weight: bold; }

.diagram-container { background: #0f0f23; border-radius: 12px; padding: 1.5rem; min-height: 280px; margin-bottom: 1rem; }
.explanation { background: #16213e; padding: 1rem; border-radius: 8px; }
.explanation h3 { color: #f0a500; margin-bottom: 0.5rem; }
.result { padding: 0.75rem; border-radius: 6px; margin-top: 1rem; font-weight: bold; }
.success { background: #0a3d2a; color: #4ade80; }
.failure { background: #3d0a0a; color: #f87171; }
.warning { background: #3d2a0a; color: #fbbf24; }

/* Silent failures section */
.intro-text { font-size: 1.1rem; margin-bottom: 1.5rem; }
.failure-examples { display: flex; gap: 1rem; margin-bottom: 1.5rem; align-items: center; flex-wrap: wrap; }
.failure-example { background: #0f0f23; border-radius: 12px; padding: 1rem; min-width: 280px; min-height: 150px; flex: 1; }
.failure-desc { flex: 2; min-width: 300px; }
.failure-desc h3 { color: #f0a500; margin-bottom: 0.5rem; }

.problem-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1rem; }
.problem-card { background: #16213e; padding: 1rem; border-radius: 8px; border-left: 4px solid #e94560; }
.problem-card h3 { margin-bottom: 0.5rem; }
ul, ol { margin-left: 1.5rem; margin-top: 0.5rem; }
li { margin-bottom: 0.5rem; }
svg text { font-family: system-ui, sans-serif; }

/* Feed problem section */
.comparison-box { display: flex; gap: 1.5rem; margin: 1.5rem 0; flex-wrap: wrap; }
.comparison-item { flex: 1; min-width: 280px; padding: 1.5rem; border-radius: 12px; }
.comparison-item.easy { background: rgba(74, 222, 128, 0.1); border: 2px solid #4ade80; }
.comparison-item.hard { background: rgba(239, 68, 68, 0.1); border: 2px solid #ef4444; }
.comparison-item h3 { margin-bottom: 1rem; }
.comparison-item ul { margin-left: 1.2rem; }
.comparison-item li { margin-bottom: 0.5rem; color: #ccc; }

.math-example { background: #16213e; padding: 1.5rem; border-radius: 12px; margin-top: 1.5rem; }
.math-example h3 { margin-bottom: 1rem; }
.math-grid { display: flex; gap: 1.5rem; flex-wrap: wrap; }
.math-card { flex: 1; min-width: 200px; padding: 1.5rem; border-radius: 8px; text-align: center; }
.legacy-math { background: rgba(251, 146, 60, 0.15); border: 2px solid #fb923c; }
.outbox-math { background: rgba(239, 68, 68, 0.15); border: 2px solid #ef4444; }
.big-number { font-size: 3rem; font-weight: bold; color: #fff; margin: 0.5rem 0; }
.formula { font-family: monospace; color: #a0a0a0; font-size: 0.9rem; }
.math-note { margin-top: 1rem; color: #ccc; }

/* Case study section */
.case-study-box { background: #16213e; padding: 1.5rem; border-radius: 12px; }
.quote-box { background: #0f0f23; padding: 1.5rem; border-radius: 8px; border-left: 4px solid #e94560; margin-bottom: 1.5rem; }
.quote { font-style: italic; color: #ccc; font-size: 1.1rem; line-height: 1.7; }
.quote-source { margin-top: 1rem; color: #888; font-size: 0.9rem; }

.timeline { margin-top: 1rem; }
.timeline h3 { margin-bottom: 1rem; color: #f0a500; }
.timeline-item { display: flex; gap: 1rem; margin-bottom: 1rem; align-items: flex-start; }
.timeline-item .step { background: #4ade80; color: #000; font-weight: bold; width: 30px; height: 30px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.timeline-item.failure .step { background: #ef4444; font-size: 1.2rem; }
.step-content { background: #0f0f23; padding: 1rem; border-radius: 8px; flex: 1; }
.step-content strong { color: #fff; }
.step-content p { color: #a0a0a0; font-size: 0.9rem; margin-top: 0.3rem; }

/* Network comparison */
.network-comparison { display: flex; gap: 1.5rem; margin: 1.5rem 0; flex-wrap: wrap; }
.network-card { flex: 1; min-width: 280px; padding: 1.5rem; border-radius: 12px; }
.good-network { background: rgba(74, 222, 128, 0.1); border: 2px solid #4ade80; }
.poor-network { background: rgba(239, 68, 68, 0.1); border: 2px solid #ef4444; }
.network-card h3 { margin-bottom: 1rem; }
.network-card ul { margin-left: 1.2rem; margin-bottom: 1rem; }
.network-card li { color: #ccc; margin-bottom: 0.5rem; }
.verdict { padding: 0.75rem; border-radius: 6px; text-align: center; font-weight: bold; }
.verdict.good { background: #0a3d2a; color: #4ade80; }
.verdict.bad { background: #3d0a0a; color: #f87171; }

/* Developer section */
.dev-comparison { display: flex; gap: 1.5rem; margin: 1.5rem 0; flex-wrap: wrap; }
.dev-card { flex: 1; min-width: 300px; padding: 1.5rem; border-radius: 12px; }
.legacy-dev { background: rgba(251, 146, 60, 0.1); border: 2px solid #fb923c; }
.outbox-dev { background: rgba(239, 68, 68, 0.1); border: 2px solid #ef4444; }
.dev-card h3 { margin-bottom: 1rem; }
.dev-card pre { background: #0f0f23; padding: 1rem; border-radius: 8px; overflow-x: auto; font-size: 0.85rem; }
.dev-card code { color: #a0d0ff; }
.complexity { margin-top: 1rem; padding: 0.5rem; background: rgba(0,0,0,0.3); border-radius: 4px; text-align: center; }

.challenge-list { background: #16213e; padding: 1.5rem; border-radius: 12px; margin-top: 1.5rem; }
.challenge-list h3 { margin-bottom: 1rem; color: #f0a500; }
.challenge-list li { margin-bottom: 0.75rem; color: #ccc; }
.challenge-list strong { color: #fff; }

/* Use cases grid */
.use-case-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; }
.use-case-card { background: #16213e; padding: 1.25rem; border-radius: 8px; border-left: 4px solid #4ade80; }
.use-case-card h3 { margin-bottom: 0.5rem; font-size: 1.1rem; }
.use-case-card p { color: #ccc; font-size: 0.95rem; }

/* Pros and cons */
.pros-cons-container { display: flex; gap: 1.5rem; flex-wrap: wrap; }
.pros-box, .cons-box { flex: 1; min-width: 300px; padding: 1.5rem; border-radius: 12px; }
.pros-box { background: rgba(74, 222, 128, 0.1); border: 2px solid #4ade80; }
.cons-box { background: rgba(239, 68, 68, 0.1); border: 2px solid #ef4444; }
.pros-box h3 { color: #4ade80; margin-bottom: 1rem; }
.cons-box h3 { color: #ef4444; margin-bottom: 1rem; }
.pros-box li, .cons-box li { margin-bottom: 0.75rem; color: #ccc; }
.pros-box strong, .cons-box strong { color: #fff; }

/* Solution cards */
.solution-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; }
.solution-card { background: #16213e; padding: 1.25rem; border-radius: 8px; border-left: 4px solid #3b82f6; }
.solution-card h3 { margin-bottom: 0.75rem; color: #60a5fa; }
.solution-card p { color: #ccc; font-size: 0.95rem; margin-bottom: 0.5rem; }
.solution-card code { background: #0f0f23; padding: 0.2rem 0.5rem; border-radius: 4px; font-size: 0.9rem; color: #a0d0ff; }
.status { font-size: 0.85rem; color: #888; font-style: italic; }

/* Final verdict */
.verdict-box { background: linear-gradient(135deg, #16213e, #1a1a2e); padding: 2rem; border-radius: 12px; border: 2px solid #e94560; }
.verdict-text { font-size: 1.2rem; text-align: center; margin-bottom: 1.5rem; }
.verdict-recommendations { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1rem; }
.recommendation { background: #0f0f23; padding: 1.25rem; border-radius: 8px; }
.recommendation h3 { color: #f0a500; margin-bottom: 0.75rem; font-size: 1rem; }
.recommendation p { color: #ccc; font-size: 0.95rem; }

.closing-note { margin-top: 1.5rem; padding: 1rem; background: rgba(233, 69, 96, 0.1); border-radius: 8px; text-align: center; color: #ccc; font-style: italic; }