:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --border: #dde1e7;
  --text: #1f2430;
  --text-muted: #667085;
  --accent: #2456d6;
  --danger: #c62828;
  --ok: #2e7d32;
  --chart-up: #111111;
  --chart-down: #c62828;
  --radius: 8px;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif; }
h1, h2, h3 { line-height: 1.2; }
a { color: var(--accent); }

.card { background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px; }

label { display: block; font-size: 13px; color: var(--text-muted); margin: 10px 0 4px; }
input, select, textarea { width: 100%; padding: 7px 10px; border: 1px solid var(--border);
  border-radius: 6px; font: inherit; background: #fff; color: var(--text); }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

.btn { display: inline-block; padding: 7px 14px; border: 1px solid var(--accent);
  border-radius: 6px; background: var(--accent); color: #fff; font: inherit; cursor: pointer; }
.btn:hover { filter: brightness(1.08); }
.btn-secondary { background: #fff; color: var(--text); border-color: var(--border); }
.btn-danger { background: var(--danger); border-color: var(--danger); }
.btn-small { padding: 3px 9px; font-size: 13px; }

.form-error { color: var(--danger); font-size: 13px; min-height: 18px; margin-top: 8px; }
.neg { color: var(--danger); }

.login-wrap { min-height: 100vh; display: grid; place-items: center; }
.login-card { width: 320px; }
.login-card h1 { font-size: 20px; margin: 0 0 12px; }

/* ---------- layout & nav (task 06) ---------- */
#app-header { background: var(--surface); border-bottom: 1px solid var(--border); }
.nav-inner { max-width: 1280px; margin: 0 auto; padding: 10px 20px;
  display: flex; align-items: center; gap: 24px; }
.nav-brand { font-weight: 700; }
.nav-links { display: flex; gap: 4px; flex: 1; }
.nav-links a { padding: 6px 12px; border-radius: 6px; text-decoration: none; color: var(--text); }
.nav-links a:hover { background: var(--bg); }
.nav-links a.active { background: var(--accent); color: #fff; }
.nav-user { display: flex; align-items: center; gap: 10px; color: var(--text-muted); font-size: 13px; }
main { max-width: 1280px; margin: 20px auto; padding: 0 20px; }
.page-head { display: flex; align-items: center; justify-content: space-between;
  gap: 16px; margin-bottom: 16px; flex-wrap: wrap; }
.page-head h1 { font-size: 22px; margin: 0; }
.filter-bar { display: flex; gap: 10px; align-items: end; flex-wrap: wrap; margin-bottom: 16px; }
.filter-bar > div { min-width: 140px; }
.filter-bar label { margin-top: 0; }
.view-controls { display: flex; gap: 10px; align-items: end; justify-content: flex-end; flex-wrap: wrap; margin: -6px 0 12px; }
.view-controls > div { min-width: 140px; }
.view-controls label { margin-top: 0; }
.selected-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 4px; min-height: 28px; }

.table { width: 100%; border-collapse: collapse; background: var(--surface); }
.table th, .table td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
.table th { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--text-muted); }
.table tr:hover td { background: #fafbfc; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px;
  font-size: 12px; background: var(--bg); border: 1px solid var(--border); }
.badge-do { background: #e6f4ea; border-color: var(--ok); color: var(--ok); }
.badge-dont { background: #fdecea; border-color: var(--danger); color: var(--danger); }

.modal-backdrop { position: fixed; inset: 0; background: rgba(20,24,32,.5);
  display: grid; place-items: center; z-index: 100; }
.nested-modal-backdrop { position: fixed; inset: 0; background: rgba(20,24,32,.35);
  display: grid; place-items: center; z-index: 120; }
.modal { width: min(720px, calc(100vw - 32px)); max-height: 85vh; display: flex; flex-direction: column; }
.nested-modal { width: min(820px, calc(100vw - 32px)); }
.modal-head { display: flex; justify-content: space-between; align-items: center; }
.modal-head h2 { font-size: 17px; margin: 0; }
.modal-body { overflow-y: auto; margin-top: 10px; }
.muted { color: var(--text-muted); }

/* ---------- settings tabs (task 07) ---------- */
.tab-bar { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 16px; }
.tab { padding: 8px 16px; border: none; background: none; font: inherit; cursor: pointer;
  border-bottom: 2px solid transparent; color: var(--text-muted); }
.tab.active { color: var(--text); border-bottom-color: var(--accent); font-weight: 600; }

/* ---------- role permission matrix (task 09) ---------- */
.perm-grid { display: grid; grid-template-columns: 140px 1fr; gap: 8px 12px; align-items: center; margin: 12px 0; }
.perm-grid select { width: 140px; }
input[type="checkbox"], input[type="radio"] { width: auto; }
label.check { display: flex; align-items: center; gap: 8px; color: var(--text); }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 12px; }
.ok-msg { color: var(--ok); }

/* ---------- chart (task 13) ---------- */
.chart-host { position: relative; }
.stat-chart { width: 100%; height: auto; display: block; }
.chart-point { cursor: pointer; }
.chart-point-note { stroke: #fff; stroke-width: 1.5; }
.chart-grid { stroke: var(--border); stroke-width: 1; }
.chart-ylabel, .chart-xlabel { font-size: 10px; fill: var(--text-muted); }
.chart-vlabel { font-size: 10px; fill: var(--text); font-weight: 600; }
.chart-empty { padding: 40px 0; text-align: center; }
.chart-tooltip { position: absolute; z-index: 20; max-width: 280px; padding: 10px 12px;
  border: 1px solid var(--border); border-radius: 8px; background: #fff; box-shadow: 0 8px 24px rgba(20,24,32,.18);
  font-size: 14px; line-height: 1.35; }
.chart-tooltip-date { color: var(--text-muted); font-size: 12px; margin-bottom: 2px; }
.chart-tooltip-value { font-size: 18px; font-weight: 700; color: var(--text); }
.chart-tooltip-change { margin-top: 2px; font-weight: 600; color: var(--text); }
.chart-tooltip-note { margin-top: 8px; white-space: pre-wrap; color: var(--text); }

/* ---------- stats grid (task 14) ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(420px, 1fr)); gap: 16px; }
.stat-card-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.stat-card-title { font-weight: 600; font-size: 15px; text-decoration: none; }
.stat-card-title:hover { text-decoration: underline; }
.stat-card-actions { display: inline-flex; align-items: center; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }
.stat-card-meta { margin: 6px 0 10px; display: flex; gap: 6px; flex-wrap: wrap; align-items: center;
  font-size: 12px; color: var(--text-muted); }
.stat-card-controls { display: flex; gap: 8px; align-items: center; margin-top: 10px; font-size: 13px; }
.stat-card-controls input[type="date"] { width: 140px; padding: 4px 6px; }
label.inline { display: inline-flex; gap: 4px; align-items: center; margin: 0; color: var(--text); }
.radio-row { display: flex; gap: 12px; margin: 4px 0; }
.check-list { display: flex; flex-direction: column; gap: 4px; max-height: 160px; overflow-y: auto;
  border: 1px solid var(--border); border-radius: 6px; padding: 8px; }
.formula-row { display: grid; grid-template-columns: 1fr 70px 1fr auto 100px; gap: 8px; align-items: center; }

/* ---------- stat detail & actions list (task 15) ---------- */
.note-cell { max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.actions-list { list-style: none; margin: 0; padding: 0; }
.actions-list li { padding: 10px 0; border-bottom: 1px solid var(--border); }
.actions-list-head { display: flex; gap: 10px; align-items: baseline; }
.actions-list-desc { white-space: pre-wrap; margin-top: 2px; }
.action-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 4px; }

/* ---------- actions page (task 16) ---------- */
.action-form { margin-bottom: 4px; }
.action-form textarea { resize: vertical; }
.action-org-list { min-width: 180px; max-height: 120px; }
#log td:nth-child(3) { white-space: pre-wrap; max-width: 520px; }

/* ---------- do's & don'ts (task 18) ---------- */
.dd-card { margin-bottom: 12px; }
.dd-head { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.dd-head h3 { margin: 0; font-size: 16px; }
.dd-buttons { margin-left: auto; }
.dd-tags { margin-top: 6px; display: flex; gap: 6px; flex-wrap: wrap; }
.dd-desc { white-space: pre-wrap; margin: 8px 0; }
.dd-evidence { display: flex; gap: 8px; flex-wrap: wrap; }
.chip { border: 1px solid var(--border); background: var(--bg); border-radius: 999px;
  padding: 4px 12px; font: inherit; font-size: 13px; cursor: pointer; }
.chip:hover { border-color: var(--accent); color: var(--accent); }
.tag-suggestions { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 6px; }
.ref-row { display: flex; gap: 8px; align-items: center; margin-top: 8px; }
.ref-summary { flex: 1; }
.ref-row select, .ref-row input { width: auto; flex: 1; }
.ref-picker-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 8px; }
.ref-preview { margin-top: 12px; max-height: 360px; overflow-y: auto; }