body { margin: 0; font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, 'Noto Sans', sans-serif; background: #0b0e12; color: #e6edf3; }
.app-header { padding: 16px 24px; border-bottom: 1px solid #1f2328; background: #0b0e12; }
.layout { display: grid; grid-template-columns: 360px 1fr; gap: 16px; padding: 16px; }
.left-panel { border-right: 1px solid #1f2328; padding-right: 16px; }
.panel-block { margin-bottom: 16px; padding: 12px; border: 1px solid #1f2328; border-radius: 8px; background: #0f1318; }
.panel-block h2 { margin: 0 0 8px; font-size: 16px; }
.panel-block input, .panel-block select, .panel-block textarea { width: 100%; margin: 6px 0; padding: 8px; border-radius: 6px; border: 1px solid #30363d; background: #0b0e12; color: #e6edf3; }
.panel-block button { padding: 8px 12px; background: #238636; color: #fff; border: none; border-radius: 6px; cursor: pointer; }
.panel-block button:hover { background: #2ea043; }
.graph { height: calc(100vh - 120px); border: 1px solid #1f2328; border-radius: 8px; }