* { 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; }