/* ============================================================
   Azure-Style Architecture Diagrams
   ============================================================ */

:root {
  /* Service category palette (Azure-inspired, dark-mode aware) */
  --d-channel:    #0078D4;   /* Azure blue — entry points */
  --d-network:    #6B7280;   /* Slate gray — network/edge */
  --d-app:        #5C2D91;   /* Azure purple — application/compute */
  --d-ai:         #107C10;   /* Azure green — AI/intelligence */
  --d-data:       #C239B3;   /* Azure magenta — state/data */
  --d-telephony:  #CA5010;   /* Azure orange — telephony */
  --d-observ:     #498205;   /* Azure olive — observability */

  /* Surfaces */
  --d-zone-bg:     #f8f9fb;
  --d-tile-bg:     #ffffff;
  --d-tile-border: #e2e6ec;
  --d-text:        #1a1f36;
  --d-text-2:      #525f7f;
  --d-text-3:      #8898aa;
  --d-arrow:       #8898aa;
  --d-arrow-label: #525f7f;
}

[data-theme="dark"] {
  --d-zone-bg:     #161b22;
  --d-tile-bg:     #21262d;
  --d-tile-border: #30363d;
  --d-text:        #e6edf3;
  --d-text-2:      #b1bac4;
  --d-text-3:      #8b949e;
  --d-arrow:       #6e7681;
  --d-arrow-label: #b1bac4;
}

/* --- Diagram container --- */
.az-diagram {
  margin: 24px 0 28px;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  background: var(--c-bg);
  overflow: hidden;
}
.az-diagram svg { display: block; width: 100%; height: auto; }
.az-diagram-caption {
  font-size: 12px; color: var(--c-text-3); padding: 8px 16px;
  border-top: 1px solid var(--c-border); text-align: center;
  background: var(--c-surface);
}

/* --- Diagram SVG element styles --- */
.az-diagram .zone-bg     { fill: var(--d-zone-bg); }
.az-diagram .zone-bg-tint { opacity: 0.04; }
.az-diagram .tile        { fill: var(--d-tile-bg); stroke: var(--d-tile-border); stroke-width: 1; }
.az-diagram .tile-shadow { fill: rgba(0,0,0,0.04); }
[data-theme="dark"] .az-diagram .tile-shadow { fill: rgba(0,0,0,0.3); }

.az-diagram .zone-title  {
  font: 600 11px 'Inter', sans-serif;
  letter-spacing: 0.08em; text-transform: uppercase;
  fill: var(--d-text-3);
}
.az-diagram .tile-name   { font: 600 13px 'Inter', sans-serif; fill: var(--d-text); }
.az-diagram .tile-desc   { font: 400 11px 'Inter', sans-serif; fill: var(--d-text-3); }
.az-diagram .flow-label  {
  font: 500 11px 'Inter', sans-serif; fill: var(--d-arrow-label);
}
.az-diagram .flow-arrow  { stroke: var(--d-arrow); fill: none; stroke-width: 1.5; }
.az-diagram .flow-arrow-dashed { stroke-dasharray: 4 3; }

/* Animated voice-flow indicator (subtle "pulse" along the path) */
.az-diagram .flow-arrow-live {
  stroke: var(--d-channel);
  stroke-width: 1.8;
  stroke-dasharray: 5 6;
  animation: art-flow-pulse 1.6s linear infinite;
}
.az-diagram .flow-arrow-live.flow-out { stroke: var(--d-ai); animation-duration: 1.9s; }
@keyframes art-flow-pulse {
  to { stroke-dashoffset: -22; }
}
@media (prefers-reduced-motion: reduce) {
  .az-diagram .flow-arrow-live { animation: none; }
}

/* Category accent bars on tiles */
.az-diagram .accent-channel    { fill: var(--d-channel); }
.az-diagram .accent-network    { fill: var(--d-network); }
.az-diagram .accent-app        { fill: var(--d-app); }
.az-diagram .accent-ai         { fill: var(--d-ai); }
.az-diagram .accent-data       { fill: var(--d-data); }
.az-diagram .accent-telephony  { fill: var(--d-telephony); }
.az-diagram .accent-observ     { fill: var(--d-observ); }

/* Icon backgrounds (filled squares) */
.az-diagram .icon-bg.bg-channel    { fill: var(--d-channel); }
.az-diagram .icon-bg.bg-network    { fill: var(--d-network); }
.az-diagram .icon-bg.bg-app        { fill: var(--d-app); }
.az-diagram .icon-bg.bg-ai         { fill: var(--d-ai); }
.az-diagram .icon-bg.bg-data       { fill: var(--d-data); }
.az-diagram .icon-bg.bg-telephony  { fill: var(--d-telephony); }
.az-diagram .icon-bg.bg-observ     { fill: var(--d-observ); }
.az-diagram .icon-glyph            { fill: #fff; }

/* Zone dividers (subtle) */
.az-diagram .zone-divider { stroke: var(--c-border); stroke-width: 1; stroke-dasharray: 3 3; }

/* --- Legend --- */
.az-legend {
  display: flex; flex-wrap: wrap; gap: 14px; margin: 12px 0 0;
  font-size: 12px; color: var(--c-text-2);
}
.az-legend-item { display: flex; align-items: center; gap: 6px; }
.az-legend-swatch {
  width: 12px; height: 12px; border-radius: 3px; display: inline-block;
}

/* --- Storage tier visualization --- */
.tier-stack {
  display: flex; flex-direction: column; gap: 8px;
  margin: 16px 0 24px;
}
.tier {
  display: grid; grid-template-columns: 90px 1fr 140px;
  gap: 16px; align-items: center;
  padding: 14px 18px; border-radius: var(--radius);
  border: 1px solid var(--c-border);
}
.tier-label {
  font: 700 12px 'Inter', sans-serif;
  text-transform: uppercase; letter-spacing: .08em;
  padding: 4px 10px; border-radius: 4px; text-align: center;
}
.tier-hot  { background: rgba(202, 80, 16, 0.08); border-left: 4px solid var(--d-telephony); }
.tier-warm { background: rgba(245, 166, 35, 0.08); border-left: 4px solid #f5a623; }
.tier-cold { background: rgba(0, 120, 212, 0.08); border-left: 4px solid var(--d-channel); }
.tier-hot .tier-label  { background: var(--d-telephony); color: #fff; }
.tier-warm .tier-label { background: #f5a623; color: #fff; }
.tier-cold .tier-label { background: var(--d-channel); color: #fff; }
.tier-name { font-weight: 600; font-size: 14px; color: var(--c-text); }
.tier-desc { font-size: 13px; color: var(--c-text-2); margin-top: 2px; }
.tier-meta { font-family: var(--f-mono); font-size: 11px; color: var(--c-text-3); text-align: right; }

/* --- Mode comparison cards --- */
.mode-compare {
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
  margin: 16px 0 24px;
}
@media (max-width: 768px) { .mode-compare { grid-template-columns: 1fr; } }
.mode-card {
  border: 1px solid var(--c-border); border-radius: var(--radius);
  overflow: hidden; background: var(--c-bg);
}
.mode-card-header {
  padding: 14px 18px; color: #fff;
  display: flex; align-items: center; justify-content: space-between;
}
.mode-card-header h4 { font-size: 15px; font-weight: 700; margin: 0; }
.mode-card-header .latency {
  font-size: 11px; font-family: var(--f-mono);
  background: rgba(255,255,255,.2); padding: 3px 8px; border-radius: 4px;
}
.mode-cascade .mode-card-header { background: var(--d-app); }
.mode-voicelive .mode-card-header { background: var(--d-ai); }
.mode-card-body { padding: 16px 18px; }
.mode-card-body p { font-size: 13px; color: var(--c-text-2); margin: 0 0 12px; }
.mode-card-body ul { list-style: none; padding: 0; margin: 0; font-size: 13px; }
.mode-card-body li { padding: 4px 0; color: var(--c-text); display: flex; gap: 8px; }
.mode-card-body li::before { content: '→'; color: var(--c-text-3); flex-shrink: 0; }

/* ============================================================
   Animations for "Why this complexity?" diagrams
   ============================================================ */

/* Pulsing numbered dot (framework-positioning · turn stages) */
.az-diagram .art-pulse-dot {
  transform-origin: center;
  transform-box: fill-box;
  animation: art-pulse 2.4s ease-in-out infinite;
}
@keyframes art-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50%      { transform: scale(1.18); opacity: 0.65; }
}

/* Turn latency budget — segments fade-in left-to-right with width grow */
.az-diagram .art-budget-seg,
.az-diagram .art-budget-label,
.az-diagram .art-budget-tick {
  opacity: 0;
  animation: art-budget-in 0.55s ease-out forwards;
}
@keyframes art-budget-in {
  0%   { opacity: 0; transform: translateY(4px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* Barge-in events — fade-in along the timeline */
.az-diagram .art-barge-event {
  opacity: 0;
  animation: art-barge-in 0.45s ease-out forwards;
}
@keyframes art-barge-in {
  0%   { opacity: 0; transform: scale(0.85); }
  100% { opacity: 1; transform: scale(1); }
}
.az-diagram .art-barge-arrow {
  stroke-dasharray: 80;
  stroke-dashoffset: 80;
  animation: art-arrow-draw 0.4s ease-out forwards;
}
@keyframes art-arrow-draw {
  to { stroke-dashoffset: 0; }
}

/* Barge-in waveforms — agent TTS fades out (interrupted), user mic appears */
.az-diagram .art-wave-fade-out {
  opacity: 1;
  animation: art-wave-fade 2.4s ease-out 0.4s forwards;
}
@keyframes art-wave-fade {
  0%   { opacity: 0.8; }
  60%  { opacity: 0.8; }
  100% { opacity: 0.15; }
}
.az-diagram .art-wave-appear {
  opacity: 0;
  animation: art-wave-in 0.6s ease-out forwards;
}
@keyframes art-wave-in {
  0%   { opacity: 0; }
  100% { opacity: 0.8; }
}

@media (prefers-reduced-motion: reduce) {
  .az-diagram .art-pulse-dot,
  .az-diagram .art-budget-seg,
  .az-diagram .art-budget-label,
  .az-diagram .art-budget-tick,
  .az-diagram .art-barge-event,
  .az-diagram .art-barge-arrow,
  .az-diagram .art-wave-fade-out,
  .az-diagram .art-wave-appear {
    animation: none;
    opacity: 1;
    transform: none;
    stroke-dashoffset: 0;
  }
}

/* ============================================================
   "Not Microsoft Agent Framework" positioning callout
   ============================================================ */
.framework-callout {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: start;
  margin: 16px 0 28px;
  padding: 18px 22px;
  border: 1px solid var(--c-border);
  border-left: 4px solid #5C2D91;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(92,45,145,0.04) 0%, rgba(16,124,16,0.03) 100%);
}
[data-theme="dark"] .framework-callout {
  background: linear-gradient(135deg, rgba(92,45,145,0.10) 0%, rgba(16,124,16,0.08) 100%);
}
.framework-callout-icon {
  width: 44px; height: 44px; border-radius: 10px;
  background: #5C2D91; color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 16px; letter-spacing: -0.02em;
  flex-shrink: 0;
}
.framework-callout-body h3 {
  margin: 0 0 6px; font-size: 15px; font-weight: 700;
  color: var(--c-text); letter-spacing: -0.01em;
}
.framework-callout-body h3 .pill {
  display: inline-block; margin-left: 8px;
  font: 600 10px 'Inter', sans-serif; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 2px 8px; border-radius: 4px;
  background: #5C2D91; color: #fff;
}
.framework-callout-body p {
  margin: 0 0 6px; font-size: 13px; color: var(--c-text-2); line-height: 1.55;
}
.framework-callout-body p:last-child { margin-bottom: 0; }
.framework-callout-body strong { color: var(--c-text); font-weight: 600; }