:root {
  --ec-bg: #f5f7fb;
  --ec-card: #ffffff;
  --ec-text: #162032;
  --ec-subtle: #64748b;
  --ec-line: #e5e7eb;
  --ec-accent: #7c5c32;
  --ec-accent-2: #0f766e;
  --ec-danger: #b42318;
  --ec-radius: 18px;
  --ec-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--ec-bg); color: var(--ec-text); font-family: Inter, Arial, sans-serif; }
a { color: inherit; }
.ec-contract-shell { max-width: 1440px; margin: 0 auto; padding: 24px; }
.ec-topbar { display:flex; justify-content:space-between; align-items:center; gap:16px; margin-bottom:20px; }
.ec-title h1 { margin:0; font-size:32px; }
.ec-title p { margin:8px 0 0; color: var(--ec-subtle); }
.ec-actions { display:flex; gap:12px; flex-wrap:wrap; }
.ec-btn { border: 1px solid var(--ec-line); background:#fff; color:var(--ec-text); padding:10px 14px; border-radius:12px; cursor:pointer; text-decoration:none; font-weight:600; }
.ec-btn.primary { background: var(--ec-accent); color:#fff; border-color: var(--ec-accent); }
.ec-btn.secondary { background: var(--ec-accent-2); color:#fff; border-color: var(--ec-accent-2); }
.ec-grid { display:grid; grid-template-columns: 320px 1fr; gap:20px; }
.ec-card { background:var(--ec-card); border:1px solid var(--ec-line); border-radius:var(--ec-radius); box-shadow:var(--ec-shadow); }
.ec-pane { padding:18px; }
.ec-kpis { display:grid; grid-template-columns:repeat(4,1fr); gap:14px; margin-bottom:18px; }
.ec-kpi { padding:16px; }
.ec-kpi .label { font-size:12px; text-transform:uppercase; color:var(--ec-subtle); letter-spacing:.04em; }
.ec-kpi .value { font-size:28px; font-weight:800; margin-top:8px; }
.ec-search { display:flex; gap:10px; margin-bottom:14px; }
.ec-search input, .ec-form input, .ec-form select, .ec-form textarea { width:100%; padding:10px 12px; border:1px solid var(--ec-line); border-radius:12px; background:#fff; }
.ec-list { display:grid; gap:12px; max-height: calc(100vh - 290px); overflow:auto; }
.ec-list-item { padding:14px; border:1px solid var(--ec-line); border-radius:14px; background:#fff; cursor:pointer; }
.ec-list-item.active { border-color: var(--ec-accent); box-shadow: 0 0 0 3px rgba(124,92,50,.12); }
.ec-meta { display:flex; gap:10px; flex-wrap:wrap; color:var(--ec-subtle); font-size:13px; margin-top:8px; }
.ec-pill { display:inline-flex; align-items:center; padding:5px 10px; border-radius:999px; background:#f1f5f9; font-size:12px; }
.ec-pill[data-tone='draft'] { background:#fff7ed; color:#9a3412; }
.ec-pill[data-tone='active'] { background:#ecfdf5; color:#166534; }
.ec-pill[data-tone='closed'] { background:#eff6ff; color:#1d4ed8; }
.ec-detail { display:grid; gap:16px; }
.ec-section { padding:18px; }
.ec-section h3 { margin:0 0 14px; font-size:18px; }
.ec-cols { display:grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap:14px; }
.ec-data-grid { display:grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap:12px; }
.ec-data { padding:12px; border:1px solid var(--ec-line); border-radius:14px; background:#fafafa; }
.ec-data .label { color:var(--ec-subtle); font-size:12px; text-transform:uppercase; }
.ec-data .value { margin-top:8px; font-weight:700; }
.ec-table { width:100%; border-collapse: collapse; }
.ec-table th, .ec-table td { padding:10px; border-bottom:1px solid var(--ec-line); text-align:left; font-size:14px; }
.ec-form-grid { display:grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap:14px; }
.ec-form-grid .span-2 { grid-column: span 2; }
.ec-toolbar { display:flex; justify-content:space-between; align-items:center; gap:12px; margin-bottom:12px; }
.ec-empty { padding:24px; text-align:center; color:var(--ec-subtle); }
.ec-note { color:var(--ec-subtle); font-size:13px; }
@media (max-width: 1080px) {
  .ec-grid { grid-template-columns: 1fr; }
  .ec-kpis { grid-template-columns: repeat(2,1fr); }
  .ec-data-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 720px) {
  .ec-contract-shell { padding: 14px; }
  .ec-topbar { flex-direction:column; align-items:flex-start; }
  .ec-kpis, .ec-cols, .ec-data-grid, .ec-form-grid { grid-template-columns: 1fr; }
  .ec-form-grid .span-2 { grid-column: span 1; }
}