.arch-shell {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.arch-layout {
  display: flex;
  gap: 16px;
  min-height: 600px;
  height: calc(100vh - 150px);
}

.arch-graph {
  flex: 1;
  min-width: 0;
  min-height: 500px;
  position: relative;
  overflow: hidden;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.arch-side {
  width: 260px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex-shrink: 0;
}

.arch-conditions,
.arch-tooltip {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 16px;
}

.arch-conditions h3,
.arch-tooltip h4 {
  margin: 0 0 12px;
  color: var(--text-primary);
  font-size: var(--font-md);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.arch-cond-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid var(--border-subtle);
  font-size: var(--font-sm);
}

.arch-cond-row:last-child { border-bottom: none; }
.arch-cond-row.danger { margin-inline: -8px; padding-inline: 8px; border-radius: var(--radius-sm); background: var(--danger-100); }
.arch-cond-row.warn { margin-inline: -8px; padding-inline: 8px; border-radius: var(--radius-sm); background: var(--warning-100); }
.arch-cond-label { color: var(--text-secondary); font-weight: 700; }
.arch-cond-val { color: var(--text-primary); font-weight: 800; white-space: nowrap; }
.arch-cond-val.on { color: var(--success-500); }
.arch-cond-val.off { color: var(--text-tertiary); }
.arch-cond-val.warn { color: var(--warning-500); }
.arch-cond-val.danger { color: var(--danger-500); }

.arch-tooltip {
  font-size: var(--font-sm);
  line-height: 1.55;
}

.arch-tooltip-body { color: var(--text-secondary); }
.arch-heartbeat {
  margin-top: 10px;
  color: var(--text-tertiary);
  font-size: var(--font-xs);
  font-weight: 700;
}
.arch-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 5px;
  border-radius: 999px;
  vertical-align: 1px;
}

.arch-loading,
.arch-error {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
  font-size: var(--font-sm);
  font-weight: 700;
}

.arch-error { color: var(--danger-500); }

@media (max-width: 900px) {
  .arch-layout {
    height: auto;
    min-height: 0;
    flex-direction: column;
  }
  .arch-graph { min-height: 520px; }
  .arch-side { width: 100%; }
}

@media (max-width: 767px) {
  .arch-shell { padding: 12px; }
  .arch-graph { min-height: 460px; }
}