/* arch.css -- Architecture diagram: nodes, layers, arrows, hard wall, legend */

.arch-diagram {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

/* Title */
.arch-title {
  text-align: center;
  margin-bottom: 24px;
}
.arch-title h2 {
  font-size: 22px;
  font-weight: 800;
  color: var(--brand-primary);
  margin-bottom: 4px;
}
.arch-title p {
  font-size: 13px;
  color: var(--text-muted);
}

/* Layer */
.arch-layer {
  width: 100%;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 24px;
  position: relative;
}
.arch-layer-label {
  position: absolute;
  top: -10px;
  left: 20px;
  background: var(--bg);
  padding: 0 10px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
}

/* Row */
.arch-row {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 16px;
}
.arch-row-center {
  justify-content: center;
}

/* Node */
.arch-node {
  flex: 1;
  max-width: 360px;
  border-radius: 8px;
  padding: 18px;
  border: 2px solid;
  transition: box-shadow 0.2s;
}
.arch-node:hover {
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.07);
}
.arch-kiosk {
  border-color: #C67B1A;
  background: linear-gradient(135deg, #FFF8E1 0%, #fff 100%);
}
.arch-ai {
  border-color: #6C5CE7;
  background: linear-gradient(135deg, #F0EDFF 0%, #fff 100%);
}
.arch-engine {
  border-color: #0D8548;
  background: linear-gradient(135deg, #E6F4ED 0%, #fff 100%);
}
.arch-expert {
  border-color: var(--brand-primary);
  background: linear-gradient(135deg, #E3EDF7 0%, #fff 100%);
}

.arch-node-icon {
  margin-bottom: 10px;
  color: var(--text);
}
.arch-node-name {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 4px;
}
.arch-node-desc {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.arch-node-path {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text-muted);
  background: rgba(0, 0, 0, 0.04);
  padding: 3px 8px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 10px;
}

/* Tags */
.arch-node-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 10px;
}
.arch-tag {
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(10, 61, 145, 0.08);
  color: var(--brand-primary);
  font-weight: 500;
}

/* Rules (ok / no) */
.arch-node-rules {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.arch-rule {
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 500;
}
.arch-rule.ok {
  background: var(--success-bg);
  color: var(--success);
}
.arch-rule.ok::before {
  content: '\2713 ';
}
.arch-rule.no {
  background: var(--danger-bg);
  color: var(--danger);
}
.arch-rule.no::before {
  content: '\2717 ';
}

/* Hard wall between AI and Engine */
.arch-wall {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 100px;
  padding: 0 4px;
}
.arch-wall-line {
  width: 2px;
  flex: 1;
  min-height: 16px;
  background: repeating-linear-gradient(
    to bottom,
    var(--brand-accent) 0px,
    var(--brand-accent) 4px,
    transparent 4px,
    transparent 8px
  );
}
.arch-wall-arrow {
  color: var(--brand-accent);
}
.arch-wall-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--brand-accent);
  font-weight: 600;
  white-space: nowrap;
}
.arch-wall-badge {
  font-size: 9px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--brand-accent);
  color: #fff;
  letter-spacing: 1px;
}

/* Arrows between layers */
.arch-arrow-down {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 6px 0;
  color: var(--brand-primary);
}
.arch-arrow-label {
  font-size: 10px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Infrastructure layer */
.arch-layer-infra {
  background: var(--brand-primary);
  border-color: var(--brand-primary);
  margin-top: 0;
}
.arch-layer-infra .arch-layer-label {
  background: var(--brand-primary);
  color: rgba(255, 255, 255, 0.6);
}
.arch-layer-infra .arch-row {
  flex-wrap: wrap;
  gap: 10px;
}
.arch-infra-node {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 6px;
  color: #fff;
  font-size: 12px;
  font-weight: 500;
}
.arch-infra-icon {
  color: rgba(255, 255, 255, 0.8);
  display: flex;
}
.arch-infra-label {
  text-align: center;
  margin-top: 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.5);
}

/* Legend */
.arch-legend {
  width: 100%;
  margin-top: 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 20px;
}
.arch-legend-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}
.arch-legend-items {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.arch-legend-item {
  display: flex;
  align-items: center;
  gap: 10px;
}
.arch-legend-num {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--brand-primary);
  color: #fff;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.arch-legend-text {
  font-size: 12px;
  color: var(--text-secondary);
}
.arch-legend-text strong {
  color: var(--text);
}

/* Responsive */
@media (max-width: 768px) {
  .arch-row {
    flex-direction: column;
    align-items: center;
  }
  .arch-node {
    max-width: 100%;
  }
  .arch-wall {
    flex-direction: row;
    min-width: unset;
    width: 100%;
    padding: 8px 0;
  }
  .arch-wall-line {
    width: auto;
    height: 2px;
    min-height: unset;
    flex: 1;
    background: repeating-linear-gradient(
      to right,
      var(--brand-accent) 0px,
      var(--brand-accent) 4px,
      transparent 4px,
      transparent 8px
    );
  }
  .arch-wall-arrow {
    transform: rotate(90deg);
  }
}