:root {
  --blue: #0112b8;
  --ink: #101b45;
  --muted: #63708c;
  --line: #dfe4f0;
  --line-strong: #c7cfdf;
  --wash: #f3f6ff;
  --field: #fbfcff;
  --ok: #087443;
  --ok-bg: #f2fbf6;
  --ok-line: #bfe3cf;
  --hold: #a8363c;
  --hold-bg: #fff6f6;
  --hold-line: #ecc5c7;
  --warn: #8a5a00;
  --warn-bg: #fff9ec;
  --warn-line: #ecd9a8;
  --focus: #9cafef;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  min-height: 100vh;
  color: var(--ink);
  background: #fff;
  border-top: 4px solid var(--blue);
  font-family: var(--sans);
  line-height: 1.5;
}

button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
code, input, textarea { font-family: var(--mono); }
.hidden { display: none !important; }

.app-container { width: min(1080px, calc(100% - 32px)); margin: 0 auto; padding: 28px 0 54px; }

/* Top bar */
.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
  font: 700 11px var(--mono);
  letter-spacing: .08em;
}
.network-badge { display: flex; align-items: center; gap: 9px; }
.pulse-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 4px #08744318; }

/* Hero */
.eyebrow { margin: 64px 0 16px; color: var(--blue); font: 700 11px var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.hero h1 { font-size: clamp(40px, 7vw, 72px); letter-spacing: -.065em; line-height: .95; font-weight: 800; max-width: 820px; }
.intro { max-width: 700px; margin: 22px 0 44px; color: var(--muted); font-size: 17px; line-height: 1.6; }
.intro strong { color: var(--ink); font-weight: 700; }

/* Layout */
.main-grid { display: grid; grid-template-columns: minmax(320px, .9fr) minmax(0, 1.4fr); gap: 24px; align-items: start; }
.panel-card { border: 1px solid var(--line); background: #fff; padding: 26px; box-shadow: 0 12px 40px #0b1d6110; }
.panel-header { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 20px; }
.panel-header h2 { font-size: 18px; font-weight: 800; letter-spacing: -.02em; }
.tag, .badge { border: 1px solid var(--line-strong); color: var(--muted); padding: 4px 7px; font: 700 10px var(--mono); letter-spacing: .04em; white-space: nowrap; }
.badge-error { color: var(--hold); border-color: var(--hold-line); background: var(--hold-bg); }
.badge-success { color: var(--ok); border-color: var(--ok-line); background: var(--ok-bg); }
.badge-warn { color: var(--warn); border-color: var(--warn-line); background: var(--warn-bg); }

/* Mode toggle + presets */
.mode-toggle-group { display: grid; grid-template-columns: 1fr 1fr; margin-bottom: 20px; border: 1px solid var(--line-strong); }
.mode-toggle-btn { padding: 11px 8px; border: 0; background: var(--field); color: var(--muted); font-size: 12px; font-weight: 700; transition: background .15s, color .15s; }
.mode-toggle-btn + .mode-toggle-btn { border-left: 1px solid var(--line-strong); }
.mode-toggle-btn:hover { color: var(--ink); }
.mode-toggle-btn.active { background: var(--blue); color: #fff; }
.mode-toggle-btn:focus-visible, .preset-btn:focus-visible, .btn:focus-visible, .copy-btn:focus-visible { outline: 3px solid var(--focus); outline-offset: 1px; }

.section-label { display: block; margin-bottom: 9px; color: var(--muted); font: 700 10px var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.preset-section { padding-bottom: 20px; margin-bottom: 20px; border-bottom: 1px solid var(--line); }
.preset-buttons { display: flex; flex-wrap: wrap; gap: 7px; }
.preset-btn { padding: 7px 10px; color: var(--muted); background: var(--field); border: 1px solid var(--line-strong); font-size: 11px; transition: border-color .15s, color .15s, background .15s; }
.preset-btn:hover { color: var(--blue); border-color: var(--blue); }
.preset-btn.active { color: var(--blue); border-color: var(--blue); background: var(--wash); font-weight: 700; }

/* Form */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-size: 13px; font-weight: 700; }
.form-group input, .form-group textarea { width: 100%; padding: 11px 10px; border: 1px solid var(--line-strong); color: var(--ink); background: var(--field); font-size: 13px; outline: none; }
.form-group input { height: 46px; }
.form-group textarea { resize: vertical; min-height: 84px; line-height: 1.5; }
.form-group input:focus, .form-group textarea:focus { outline: 3px solid var(--focus); border-color: var(--blue); }
.field-hint { display: block; margin-top: 5px; color: var(--muted); font-size: 12px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.action-row { display: grid; grid-template-columns: 1fr 1.3fr; gap: 10px; margin-top: 24px; }
.btn { min-height: 50px; display: flex; align-items: center; justify-content: center; gap: 7px; padding: 0 18px; border: 1px solid transparent; font-size: 13px; font-weight: 800; transition: background .15s, border-color .15s, color .15s; }
.btn-primary { color: #fff; background: var(--blue); border-color: var(--blue); }
.btn-primary:hover { background: #0a1ad6; }
.btn-secondary { color: var(--blue); background: #fff; border-color: var(--blue); }
.btn-secondary:hover { background: var(--wash); }

/* Status */
.status-pill { display: inline-block; padding: 4px 8px; border: 1px solid var(--line-strong); font: 700 10px var(--mono); letter-spacing: .04em; text-transform: uppercase; }
.status-ready { color: var(--muted); background: var(--field); }
.status-running { color: var(--blue); border-color: var(--focus); background: var(--wash); }
.status-success { color: var(--ok); border-color: var(--ok-line); background: var(--ok-bg); }
.status-error { color: var(--hold); border-color: var(--hold-line); background: var(--hold-bg); }

.loading-state { display: flex; flex-direction: column; align-items: center; gap: 14px; padding: 64px 12px; color: var(--muted); font: 12px var(--mono); text-align: center; }
.spinner { width: 24px; height: 24px; border: 2px solid var(--line); border-top-color: var(--blue); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.empty-state { padding: 64px 20px; color: var(--muted); font-size: 14px; line-height: 1.7; text-align: center; border: 1px dashed var(--line-strong); background: var(--field); }

/* Result */
.agent-output { display: flex; flex-direction: column; gap: 16px; }
.trace-box { overflow: hidden; border: 1px solid var(--line); background: #fff; }
.step-header { display: flex; align-items: center; gap: 10px; padding: 13px 16px; border-bottom: 1px solid var(--line); background: var(--wash); }
.step-header h3 { flex: 1; font-size: 13px; font-weight: 800; }
.step-num { color: var(--blue); font: 700 10px var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.step-body { padding: 14px 16px; }

.info-row { display: grid; grid-template-columns: 110px minmax(0, 1fr); gap: 12px; align-items: start; padding: 9px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
.info-row:last-child { border-bottom: 0; }
.info-label, .stat-title { color: var(--muted); font: 700 10px var(--mono); text-transform: uppercase; letter-spacing: .06em; }
.info-row code, .text-alert { overflow-wrap: anywhere; color: var(--ink); font-size: 12px; }
.text-alert { font-family: var(--sans); font-size: 13px; }
.code-hl { color: var(--hold) !important; font-weight: 700; }
.code-hex { color: var(--blue) !important; }

.remediation-box { padding: 16px; border: 1px solid var(--ok-line); border-left: 3px solid var(--ok); background: var(--ok-bg); }
.remediation-box h4 { margin-bottom: 10px; color: var(--ok); font: 700 10px var(--mono); text-transform: uppercase; letter-spacing: .1em; }
.remediation-list { list-style: none; }
.remediation-list li { display: flex; align-items: flex-start; gap: 8px; margin-bottom: 8px; font-size: 13px; line-height: 1.6; }
.remediation-list li:last-child { margin-bottom: 0; }
.remediation-bullet { color: var(--ok); font-weight: 800; }

.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.stat-card { min-width: 0; padding: 12px; border: 1px solid var(--line); background: var(--field); }
.stat-val { display: block; margin-top: 6px; overflow-wrap: anywhere; font: 700 14px var(--mono); }

.trace-list { list-style: none; padding: 8px 16px; }
.trace-item { display: grid; grid-template-columns: 170px minmax(0, 1fr); gap: 12px; padding: 9px 0; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.trace-item:last-child { border-bottom: 0; }
.trace-tag { color: var(--blue); font: 700 11px var(--mono); }
.trace-detail { overflow-wrap: anywhere; }

.copy-row { display: flex; justify-content: flex-end; gap: 8px; }
.copy-btn { padding: 8px 12px; border: 1px solid var(--line-strong); background: #fff; color: var(--muted); font: 700 11px var(--mono); transition: color .15s, border-color .15s; }
.copy-btn:hover { color: var(--blue); border-color: var(--blue); }

.app-footer { margin-top: 44px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; line-height: 1.7; }
.app-footer strong { color: var(--ink); font-weight: 700; }
.app-footer code { color: var(--blue); }

@media (max-width: 860px) {
  .main-grid { grid-template-columns: 1fr; }
}
@media (max-width: 650px) {
  .top { flex-direction: column; align-items: flex-start; }
  .eyebrow { margin-top: 44px; }
  .panel-card { padding: 18px; }
  .action-row, .stat-grid, .grid-2 { grid-template-columns: 1fr; }
  .info-row, .trace-item { grid-template-columns: 1fr; gap: 4px; }
  .copy-row .copy-btn { flex: 1; }
}