:root {
  --bg: #f8faf9;
  --panel: #ffffff;
  --ink: #0d1612;
  --muted: #56645e;
  --line: #e1e8e4;
  --accent: #2e6b4f;
  --accent-tint: #edf4f0;
  --accent-line: #c6dbd0;
  --dark-bg: #111a15;
  --radius: 14px;
  --shadow: 0 16px 36px rgba(0, 0, 0, 0.05);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--bg); color: var(--ink); font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter", sans-serif; -webkit-font-smoothing: antialiased; line-height: 1.5; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; }

.app-shell { display: grid; grid-template-columns: 260px 1fr; min-height: 100vh; }

.sidebar { background: #fff; border-right: 1px solid var(--line); padding: 24px 20px; display: flex; flex-direction: column; justify-content: space-between; }
.brand-mark { display: flex; align-items: center; gap: 12px; }
.logo-svg { width: 32px; height: 32px; }
.brand-mark strong { display: block; font-size: 16px; letter-spacing: -.02em; color: var(--ink); }
.brand-mark small { display: block; font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--accent); font-weight: 700; }

.side-nav { display: flex; flex-direction: column; gap: 4px; margin-top: 32px; }
.nav-item { display: flex; align-items: center; justify-content: space-between; padding: 10px 14px; border-radius: 10px; font-size: 13.5px; font-weight: 550; color: var(--muted); transition: all .15s ease; }
.nav-item:hover { background: var(--accent-tint); color: var(--accent); }
.nav-item.is-active { background: var(--accent); color: #fff; }

.demo-card { background: var(--accent-tint); border: 1px solid var(--accent-line); border-radius: 12px; padding: 14px; font-size: 12px; }
.micro-label { font-size: 10px; font-weight: 750; text-transform: uppercase; letter-spacing: .08em; color: var(--accent); margin-bottom: 4px; }
.demo-card strong { display: block; color: var(--ink); font-size: 13px; }
.demo-card span { color: var(--muted); font-size: 11.5px; }

.workspace { padding: 32px 40px; overflow-y: auto; }
.topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 28px; }
.topbar h1 { font-size: 26px; letter-spacing: -.03em; margin-top: 2px; }
.primary-button { background: var(--ink); color: #fff; padding: 9px 18px; border-radius: 999px; font-size: 13px; font-weight: 600; }

.view { display: none; }
.view.is-active { display: block; }
.view-head { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.view-head h2 { font-size: 20px; letter-spacing: -.02em; margin-top: 2px; }
.status-pill { background: var(--accent-tint); color: var(--accent); border: 1px solid var(--accent-line); padding: 5px 12px; border-radius: 999px; font-size: 12px; font-weight: 650; }

.kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 28px; }
.kpi-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; }
.kpi-val { font-size: 28px; font-weight: 700; letter-spacing: -.03em; margin: 4px 0; }
.kpi-sub { font-size: 12px; color: var(--accent); font-weight: 600; }

.trace-console { background: var(--dark-bg); color: #fff; border-radius: 18px; padding: 28px; box-shadow: 0 20px 40px rgba(0,0,0,.15); }
.trace-controls { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; padding-bottom: 18px; border-bottom: 1px solid rgba(255,255,255,.1); flex-wrap: wrap; gap: 16px; }
.mode-switcher { display: flex; background: rgba(255,255,255,.06); padding: 4px; border-radius: 999px; border: 1px solid rgba(255,255,255,.1); }
.mode-btn { padding: 8px 18px; border-radius: 999px; font-size: 12.5px; font-weight: 650; color: #a0b0a8; transition: all .15s ease; }
.mode-btn.is-active { background: var(--accent); color: #fff; }
.stepper-wrap { display: flex; align-items: center; gap: 14px; }
.step-btn { background: rgba(255,255,255,.1); color: #fff; padding: 7px 14px; border-radius: 8px; font-size: 12px; font-weight: 600; }
.step-btn:hover { background: rgba(255,255,255,.2); }
.turn-indicator { font-size: 13px; font-weight: 650; color: #c0d0c8; }

.trace-turn { display: grid; gap: 20px; }
.turn-user { background: rgba(255,255,255,.05); border-left: 3px solid var(--accent); padding: 14px 18px; border-radius: 8px; font-size: 15px; }
.turn-user small { display: block; font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: #80a090; margin-bottom: 4px; }
.turn-response { background: rgba(0,0,0,.25); border: 1px solid rgba(255,255,255,.1); border-radius: 12px; padding: 20px; }
.turn-response h4 { font-size: 16px; margin-bottom: 10px; color: #89cfa6; }
.turn-details { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 16px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,.08); font-size: 12.5px; }
.detail-item span { display: block; color: #809088; font-size: 11px; text-transform: uppercase; margin-bottom: 2px; }

.panel-grid, .autonomy-grid, .benchmark-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.panel-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.panel-card h3 { font-size: 17px; margin: 6px 0 10px; }
.panel-card p { font-size: 13.5px; color: var(--muted); }
.tag-list { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 14px; }
.tag { background: var(--accent-tint); color: var(--accent); font-size: 11px; font-weight: 700; padding: 3px 8px; border-radius: 6px; }

.table-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.audit-table { width: 100%; border-collapse: collapse; font-size: 13px; text-align: left; }
.audit-table th { background: var(--bg); padding: 12px 16px; font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); border-bottom: 1px solid var(--line); }
.audit-table td { padding: 14px 16px; border-bottom: 1px solid var(--line); color: var(--ink); }
.btn-undo { background: var(--accent-tint); color: var(--accent); border: 1px solid var(--accent-line); padding: 4px 10px; border-radius: 6px; font-size: 11.5px; font-weight: 650; }
.btn-undo:hover { background: var(--accent); color: #fff; }

@media (max-width: 900px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { border-right: 0; border-bottom: 1px solid var(--line); }
  .kpi-grid, .panel-grid, .autonomy-grid, .benchmark-grid { grid-template-columns: 1fr; }
}