:root {
  --ab-bg: #f4f6f8;
  --ab-panel: #ffffff;
  --ab-line: #d9dee5;
  --ab-text: #17202a;
  --ab-muted: #65717f;
  --ab-accent: #147d64;
  --ab-accent-strong: #0d5d4b;
  --ab-warn: #a45b00;
  --ab-danger: #b42318;
  --ab-blue: #2463a7;
}

body.agent-builder-page { background: var(--ab-bg); color: var(--ab-text); }
.agent-builder-page main { min-height: calc(100vh - 72px); }
.builder-shell { display: grid; grid-template-columns: 240px minmax(0, 1fr); min-height: calc(100vh - 72px); border-top: 1px solid var(--ab-line); }
.builder-sidebar { background: #17202a; color: #fff; padding: 22px 14px; position: sticky; top: 72px; height: calc(100vh - 72px); overflow-y: auto; }
.builder-product { padding: 0 10px 20px; border-bottom: 1px solid #34404c; }
.builder-product strong { display: block; font-size: 18px; }
.builder-product span { color: #aeb8c3; font-size: 12px; }
.builder-nav { display: grid; gap: 4px; padding: 18px 0; }
.builder-nav button { width: 100%; border: 0; background: transparent; color: #cbd3db; text-align: left; padding: 10px 12px; border-radius: 6px; font: inherit; cursor: pointer; }
.builder-nav button:hover, .builder-nav button[aria-selected="true"] { background: #2a3744; color: #fff; }
.builder-session { border-top: 1px solid #34404c; padding: 18px 10px 0; font-size: 12px; color: #aeb8c3; }
.builder-session strong { color: #fff; display: block; margin: 4px 0; overflow-wrap: anywhere; }
.builder-content { min-width: 0; }
.builder-topbar { min-height: 62px; padding: 10px 24px; border-bottom: 1px solid var(--ab-line); background: var(--ab-panel); display: flex; align-items: center; justify-content: space-between; gap: 16px; position: sticky; top: 72px; z-index: 6; }
.builder-topbar h1 { font-size: 18px; margin: 0; letter-spacing: 0; }
.builder-health { display: flex; align-items: center; gap: 8px; color: var(--ab-muted); font-size: 13px; }
.builder-health::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--ab-warn); }
.builder-health[data-state="ready"]::before { background: var(--ab-accent); }
.builder-health[data-state="error"]::before { background: var(--ab-danger); }
.builder-workspace { padding: 24px; max-width: 1440px; margin: 0 auto; }
.builder-panel[hidden] { display: none; }
.builder-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; margin-bottom: 22px; }
.builder-heading h2 { margin: 0 0 7px; font-size: 24px; letter-spacing: 0; }
.builder-heading p { margin: 0; max-width: 760px; color: var(--ab-muted); line-height: 1.55; }
.builder-grid { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 20px; align-items: start; }
.builder-form, .builder-inspector, .builder-output, .builder-summary { background: var(--ab-panel); border: 1px solid var(--ab-line); border-radius: 7px; padding: 20px; }
.builder-form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.builder-form .wide { grid-column: 1 / -1; }
.builder-form label, .builder-field { display: grid; gap: 7px; font-size: 13px; font-weight: 600; }
.builder-form input, .builder-form select, .builder-form textarea, .builder-field input, .builder-field textarea { width: 100%; border: 1px solid #bbc4ce; border-radius: 5px; padding: 10px 11px; background: #fff; color: var(--ab-text); font: inherit; resize: vertical; }
.builder-form input:focus, .builder-form select:focus, .builder-form textarea:focus, .builder-field input:focus, .builder-field textarea:focus { outline: 2px solid #8fcbbc; outline-offset: 1px; border-color: var(--ab-accent); }
.builder-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; grid-column: 1 / -1; padding-top: 4px; }
.builder-button { border: 1px solid var(--ab-accent); background: var(--ab-accent); color: #fff; padding: 9px 14px; border-radius: 5px; font: 600 13px/1.2 Inter, sans-serif; cursor: pointer; }
.builder-button:hover { background: var(--ab-accent-strong); }
.builder-button.secondary { background: #fff; color: var(--ab-text); border-color: #aeb8c3; }
.builder-button.danger { background: #fff; color: var(--ab-danger); border-color: #e3aaa5; }
.builder-button:disabled { opacity: .5; cursor: not-allowed; }
.builder-status { min-height: 20px; color: var(--ab-muted); font-size: 13px; }
.builder-status.error { color: var(--ab-danger); }
.builder-inspector h3, .builder-output h3, .builder-summary h3 { margin: 0 0 12px; font-size: 15px; letter-spacing: 0; }
.builder-list { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.builder-list button { width: 100%; text-align: left; border: 1px solid var(--ab-line); background: #fff; border-radius: 5px; padding: 10px; cursor: pointer; color: var(--ab-text); }
.builder-list button[aria-current="true"] { border-color: var(--ab-accent); box-shadow: inset 3px 0 var(--ab-accent); }
.builder-list small { display: block; color: var(--ab-muted); margin-top: 4px; }
.builder-empty { color: var(--ab-muted); font-size: 13px; padding: 18px 0; }
.builder-capabilities { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.builder-capability { border: 1px solid var(--ab-line); border-radius: 5px; padding: 9px; display: flex !important; grid-template-columns: auto 1fr; align-items: flex-start; font-weight: 500 !important; }
.builder-capability input { width: auto; margin: 2px 8px 0 0; }
.quota-strip { display: grid; grid-template-columns: repeat(4, minmax(110px, 1fr)); gap: 10px; margin-bottom: 20px; }
.quota-item { background: var(--ab-panel); border: 1px solid var(--ab-line); border-radius: 6px; padding: 12px 14px; }
.quota-item span { display: block; font-size: 11px; color: var(--ab-muted); text-transform: uppercase; }
.quota-item strong { font-size: 18px; }
.workflow-toolbar { display: flex; gap: 8px; flex-wrap: wrap; padding: 12px; background: var(--ab-panel); border: 1px solid var(--ab-line); border-bottom: 0; border-radius: 7px 7px 0 0; }
.workflow-canvas { position: relative; height: 500px; overflow: auto; background-color: #f8fafb; background-image: radial-gradient(#c8d0d9 1px, transparent 1px); background-size: 20px 20px; border: 1px solid var(--ab-line); border-radius: 0 0 7px 7px; }
.workflow-edges { position: absolute; inset: 0; width: 1200px; height: 800px; pointer-events: none; }
.workflow-edges path { fill: none; stroke: #8090a0; stroke-width: 2; }
.workflow-node { position: absolute; width: 180px; min-height: 74px; background: #fff; border: 1px solid #aeb8c3; border-left: 4px solid var(--ab-blue); border-radius: 6px; padding: 10px; cursor: grab; user-select: none; box-shadow: 0 3px 10px rgba(23, 32, 42, .08); }
.workflow-node[data-type="agent"] { border-left-color: var(--ab-accent); }
.workflow-node[data-type="condition"] { border-left-color: var(--ab-warn); }
.workflow-node[data-type="humanApproval"] { border-left-color: #7a4fa3; }
.workflow-node[data-type="output"] { border-left-color: #485767; }
.workflow-node strong { font-size: 13px; display: block; }
.workflow-node span { color: var(--ab-muted); font-size: 11px; }
.workflow-node button { position: absolute; top: 6px; right: 6px; width: 24px; height: 24px; border: 0; background: transparent; color: var(--ab-muted); cursor: pointer; font-size: 18px; }
.playground { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .8fr); gap: 20px; }
.playground-log { min-height: 340px; max-height: 520px; overflow: auto; background: #111820; color: #dce5ed; border-radius: 6px; padding: 16px; white-space: pre-wrap; font: 12px/1.6 "JetBrains Mono", monospace; }
.readiness-list { display: grid; gap: 7px; margin-top: 14px; }
.readiness-item { padding: 9px 10px; border-left: 3px solid var(--ab-accent); background: #f1f7f5; font-size: 12px; }
.readiness-item.warn { border-color: var(--ab-warn); background: #fff7eb; }
.readiness-item.error { border-color: var(--ab-danger); background: #fff1f0; }
.export-options { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.export-option { border: 1px solid var(--ab-line); border-radius: 7px; padding: 18px; background: #fff; }
.export-option h3 { font-size: 16px; margin: 0 0 8px; }
.export-option p { color: var(--ab-muted); font-size: 13px; line-height: 1.55; min-height: 62px; }
.export-option { display: flex; flex-direction: column; gap: 10px; }
.export-option .plan-price { color: var(--ab-ink); font-size: 24px; font-weight: 700; line-height: 1.1; }
.export-option .plan-price small { color: var(--ab-muted); font-size: 12px; font-weight: 500; }
.export-option ul { margin: 0; padding-left: 18px; color: var(--ab-muted); font-size: 12px; line-height: 1.55; }
.export-option .plan-outcome { min-height: 0; color: var(--ab-ink); font-weight: 600; }
.export-option .builder-button { margin-top: auto; align-self: flex-start; }
.checkout-owner-form { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(220px, 1.2fr); gap: 12px; align-items: end; margin-bottom: 14px; }
.checkout-owner-form label { display: grid; gap: 5px; color: var(--ab-muted); font-size: 12px; }
.checkout-owner-form input { width: 100%; border: 1px solid var(--ab-line); border-radius: 5px; padding: 10px 11px; background: #fff; color: var(--ab-ink); }
.compact-heading { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--ab-line); align-items: center; }
.builder-toast { position: fixed; right: 22px; bottom: 22px; max-width: 380px; padding: 12px 16px; background: #17202a; color: #fff; border-radius: 6px; z-index: 20; box-shadow: 0 8px 30px rgba(0,0,0,.2); }
.builder-toast[hidden] { display: none; }

@media (max-width: 980px) {
  .builder-shell { grid-template-columns: 74px minmax(0, 1fr); }
  .builder-product strong, .builder-product span, .builder-nav button span, .builder-session { display: none; }
  .builder-sidebar { padding: 14px 8px; }
  .builder-nav button { text-align: center; padding: 10px 4px; font-size: 12px; }
  .builder-grid, .playground { grid-template-columns: 1fr; }
  .quota-strip { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .builder-shell { display: block; }
  .builder-sidebar { position: static; height: auto; padding: 8px; }
  .builder-product, .builder-session { display: none; }
  .builder-nav { display: flex; overflow-x: auto; padding: 0; }
  .builder-nav button { min-width: 96px; }
  .builder-topbar { top: 64px; padding: 10px 14px; }
  .builder-workspace { padding: 16px 12px; }
  .builder-heading { display: block; }
  .builder-form { grid-template-columns: 1fr; padding: 15px; }
  .builder-capabilities, .quota-strip, .export-options, .checkout-owner-form { grid-template-columns: 1fr; }
  .workflow-canvas { height: 430px; }
}