/* RIA-Claude design system — neutral foundation + one confident accent.
   Palette sourced from the validated dataviz reference (references/palette.md). */

:root {
  --accent: #2a78d6;
  --accent-dark: #184f95;
  --accent-tint: #eaf2fc;
  --accent-tint-2: #d7e7fa;

  --surface: #fcfcfb;
  --page: #f4f4f1;
  --sidebar: #14181f;
  --sidebar-ink: #c7cbd3;
  --sidebar-ink-active: #ffffff;

  --ink: #0b0b0b;
  --ink-secondary: #52514e;
  --ink-muted: #898781;
  --border: #e1e0d9;
  --border-strong: #c3c2b7;

  --good: #0ca30c;
  --good-tint: #e4f6e4;
  --warning: #b5790a;
  --warning-tint: #fdf1da;
  --serious: #c14f1f;
  --serious-tint: #fbe6dc;
  --critical: #d03b3b;
  --critical-tint: #fbe3e3;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 2px rgba(11,11,11,0.06), 0 1px 1px rgba(11,11,11,0.04);
  --shadow-md: 0 4px 16px rgba(11,11,11,0.08);
  --font: system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background: var(--page);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { margin: 0 0 .4em 0; font-weight: 650; letter-spacing: -0.01em; }
h1 { font-size: 22px; }
h2 { font-size: 17px; }
h3 { font-size: 14px; }
p { margin: 0 0 .8em 0; color: var(--ink-secondary); }
ul { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; }

/* ---- App shell ---- */
.app-shell { display: flex; min-height: 100vh; }
.sidebar {
  width: 224px; flex-shrink: 0; background: var(--sidebar); color: var(--sidebar-ink);
  display: flex; flex-direction: column; padding: 18px 12px;
}
.sidebar .brand { display:flex; align-items:center; gap:8px; padding: 6px 10px 18px; color:#fff; font-weight:700; font-size:15px; }
.sidebar .brand .dot { width:9px; height:9px; border-radius:50%; background: var(--accent); box-shadow: 0 0 0 3px rgba(42,120,214,0.35); }
.sidebar nav { flex: 1; display:flex; flex-direction:column; gap: 2px; }
.sidebar a.nav-link {
  color: var(--sidebar-ink); padding: 8px 10px; border-radius: var(--radius-sm); font-size: 13.5px; font-weight: 500;
  display:flex; align-items:center; gap:9px;
}
.sidebar a.nav-link:hover { background: rgba(255,255,255,0.06); text-decoration:none; }
.sidebar a.nav-link.active { background: var(--accent); color: #fff; }
.sidebar .nav-group-label { font-size: 10.5px; text-transform: uppercase; letter-spacing: .06em; color: #6b7280; margin: 14px 10px 4px; }
.sidebar .user-box { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 10px; margin-top: 8px; font-size:12.5px; }
.sidebar .user-box a { color: var(--sidebar-ink); }

.main { flex: 1; min-width: 0; display:flex; flex-direction:column; }
.topbar {
  display:flex; align-items:center; gap:14px; padding: 10px 22px; background: var(--surface);
  border-bottom: 1px solid var(--border); position: sticky; top:0; z-index: 20;
}
.topbar .search-trigger {
  flex:1; max-width: 420px; display:flex; align-items:center; gap:8px; color: var(--ink-muted);
  background: var(--page); border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: 7px 12px; cursor:pointer; font-size:13px;
}
.topbar .search-trigger kbd { margin-left:auto; font-size:11px; background:#fff; border:1px solid var(--border); border-radius:4px; padding:1px 5px; color: var(--ink-muted); }
.topbar .spacer { flex: 1; }

.content { padding: 22px; max-width: 1320px; width: 100%; margin: 0 auto; }
.content.full { max-width: none; }

/* ---- Page header ---- */
.page-header { display:flex; align-items:flex-start; justify-content:space-between; gap:16px; margin-bottom: 18px; flex-wrap: wrap; }
.page-header .titles p { margin: 2px 0 0; }
.page-header .actions { display:flex; gap:8px; flex-wrap:wrap; }

/* ---- Buttons ---- */
.btn {
  display:inline-flex; align-items:center; gap:6px; justify-content:center;
  border-radius: var(--radius-sm); border: 1px solid var(--border-strong); background: #fff;
  color: var(--ink); font-size: 13px; font-weight: 600; padding: 7px 13px; cursor: pointer;
  line-height: 1.2;
}
.btn:hover { background: var(--page); text-decoration:none; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); }
.btn-danger { background: #fff; border-color: var(--critical); color: var(--critical); }
.btn-danger:hover { background: var(--critical-tint); }
.btn-sm { padding: 4px 9px; font-size: 12px; }
.btn-ghost { border-color: transparent; background: transparent; }
.btn-ghost:hover { background: var(--page); }
.btn[disabled], .btn.disabled { opacity: .5; cursor: not-allowed; pointer-events: none; }

/* ---- Cards / panels ---- */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 16px 18px; }
.card + .card { margin-top: 14px; }
.card-header { display:flex; align-items:center; justify-content:space-between; margin-bottom: 10px; }
.card-grid { display:grid; gap: 14px; }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 980px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

/* ---- Stat tiles ---- */
.stat-tile { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 14px 16px; }
.stat-tile .label { font-size: 11.5px; color: var(--ink-muted); text-transform: uppercase; letter-spacing: .04em; font-weight: 600; }
.stat-tile .value { font-size: 24px; font-weight: 700; margin-top: 4px; letter-spacing: -0.02em; }
.stat-tile .sub { font-size: 12px; color: var(--ink-muted); margin-top: 2px; }
.stat-tile a { color: inherit; }
.stat-tile a:hover { text-decoration:none; }
.stat-tile.accent { border-color: var(--accent-tint-2); background: var(--accent-tint); }

/* ---- Forms ---- */
.form-grid { display:grid; grid-template-columns: 1fr 1fr; gap: 14px 16px; }
.form-grid.single { grid-template-columns: 1fr; }
@media (max-width: 720px) { .form-grid { grid-template-columns: 1fr; } }
.field { display:flex; flex-direction:column; gap: 5px; }
.field.span-2 { grid-column: span 2; }
@media (max-width: 720px) { .field.span-2 { grid-column: span 1; } }
.field label { font-size: 12.5px; font-weight: 600; color: var(--ink-secondary); }
.field .hint { font-size: 11.5px; color: var(--ink-muted); }
input[type=text], input[type=email], input[type=password], input[type=number],
input[type=date], input[type=time], input[type=url], input[type=search], select, textarea {
  font-family: inherit; font-size: 13.5px; padding: 8px 10px; border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong); background: #fff; color: var(--ink); width: 100%;
}
textarea { resize: vertical; min-height: 70px; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.field-error { color: var(--critical); font-size: 12px; }
.field.has-error input, .field.has-error select, .field.has-error textarea { border-color: var(--critical); }
.form-actions { display:flex; gap:8px; margin-top: 16px; }
.checkbox-row { display:flex; align-items:center; gap:8px; }

/* ---- Tables ---- */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); }
table.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
table.data-table th {
  text-align:left; font-size: 11px; text-transform: uppercase; letter-spacing: .04em; color: var(--ink-muted);
  font-weight: 600; padding: 10px 12px; border-bottom: 1px solid var(--border); background: var(--page);
  white-space: nowrap;
}
table.data-table td { padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
table.data-table tr:last-child td { border-bottom: none; }
table.data-table tbody tr:hover { background: var(--accent-tint); }
table.data-table td.num { text-align: right; font-variant-numeric: tabular-nums; }
.row-link { color: var(--ink); font-weight: 600; }
.row-link:hover { color: var(--accent); }

/* ---- Badges ---- */
.badge { display:inline-flex; align-items:center; gap:5px; font-size: 11.5px; font-weight: 650; padding: 3px 9px; border-radius: 999px; white-space:nowrap; }
.badge .dot { width:6px; height:6px; border-radius:50%; }
.badge-good { background: var(--good-tint); color: #0a6e0a; }
.badge-good .dot { background: var(--good); }
.badge-warning { background: var(--warning-tint); color: #8a5a05; }
.badge-warning .dot { background: var(--warning); }
.badge-serious { background: var(--serious-tint); color: #94401a; }
.badge-serious .dot { background: var(--serious); }
.badge-critical { background: var(--critical-tint); color: #a12b2b; }
.badge-critical .dot { background: var(--critical); }
.badge-neutral { background: var(--page); color: var(--ink-secondary); border: 1px solid var(--border); }
.badge-accent { background: var(--accent-tint); color: var(--accent-dark); }

/* priority + score buckets share the status vocabulary */
.badge-hot { background: var(--critical-tint); color: #a12b2b; }
.badge-warm { background: var(--warning-tint); color: #8a5a05; }
.badge-cool { background: var(--accent-tint); color: var(--accent-dark); }
.badge-cold { background: var(--page); color: var(--ink-muted); border:1px solid var(--border); }

/* ---- Tabs ---- */
.tabs { display:flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 16px; flex-wrap: wrap; }
.tabs a { padding: 9px 12px; font-size: 13px; font-weight: 600; color: var(--ink-secondary); border-bottom: 2px solid transparent; margin-bottom:-1px; }
.tabs a:hover { text-decoration:none; color: var(--ink); }
.tabs a.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ---- Filters bar ---- */
.filters-bar { display:flex; align-items:center; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.filters-bar select, .filters-bar input { width: auto; min-width: 130px; }
.filters-bar .search-input { min-width: 220px; }

/* ---- Empty states ---- */
.empty-state { text-align:center; padding: 46px 20px; color: var(--ink-muted); }
.empty-state h3 { color: var(--ink); margin-bottom: 6px; }
.empty-state .btn { margin-top: 12px; }

/* ---- Flash / alerts ---- */
.flash { padding: 10px 14px; border-radius: var(--radius-md); font-size: 13px; margin-bottom: 12px; border: 1px solid; }
.flash-error { background: var(--critical-tint); border-color: #f0b8b8; color: #8a2323; }
.flash-success { background: var(--good-tint); border-color: #b3e3b3; color: #0a6e0a; }
.flash-info { background: var(--accent-tint); border-color: var(--accent-tint-2); color: var(--accent-dark); }

/* ---- Kanban ---- */
.kanban { display:flex; gap: 12px; overflow-x: auto; padding-bottom: 10px; align-items:flex-start; }
.kanban-col { flex: 0 0 260px; background: var(--page); border-radius: var(--radius-lg); border: 1px solid var(--border); }
.kanban-col-head { padding: 10px 12px; font-size: 12.5px; font-weight: 700; border-bottom: 1px solid var(--border); display:flex; justify-content:space-between; }
.kanban-col-head .count { color: var(--ink-muted); font-weight: 600; }
.kanban-col-body { padding: 8px; display:flex; flex-direction:column; gap: 8px; min-height: 60px; }
.kanban-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: 10px 11px; cursor: grab; box-shadow: var(--shadow-sm);
}
.kanban-card:hover { border-color: var(--accent); }
.kanban-card.dragging { opacity: .4; }
.kanban-card .title { font-weight: 650; font-size: 13px; margin-bottom: 4px; display:block; color: var(--ink); }
.kanban-card .meta { font-size: 11.5px; color: var(--ink-muted); display:flex; justify-content:space-between; align-items:center; gap:6px; }
.kanban-col-body.drop-hover { background: var(--accent-tint); border-radius: var(--radius-md); }

/* ---- Modal ---- */
.modal-overlay { position: fixed; inset:0; background: rgba(11,11,11,0.45); display:none; align-items:flex-start; justify-content:center; padding: 8vh 16px; z-index: 100; }
.modal-overlay.open { display:flex; }
.modal-box { background:#fff; border-radius: var(--radius-lg); width: 100%; max-width: 640px; box-shadow: var(--shadow-md); max-height: 80vh; overflow:auto; }
.modal-box .modal-header { display:flex; justify-content:space-between; align-items:center; padding: 14px 18px; border-bottom: 1px solid var(--border); }
.modal-box .modal-body { padding: 18px; }
.modal-close { background:none; border:none; font-size:18px; cursor:pointer; color: var(--ink-muted); }

/* ---- Command palette ---- */
.cmdk-overlay { position: fixed; inset:0; background: rgba(11,11,11,0.5); display:none; align-items:flex-start; justify-content:center; padding-top: 12vh; z-index: 200; }
.cmdk-overlay.open { display:flex; }
.cmdk-box { width: 100%; max-width: 560px; background:#fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); overflow:hidden; }
.cmdk-input { width:100%; border:none; padding: 16px 18px; font-size: 15px; border-bottom: 1px solid var(--border); }
.cmdk-input:focus { outline:none; }
.cmdk-results { max-height: 360px; overflow-y:auto; }
.cmdk-results a { display:flex; justify-content:space-between; padding: 10px 18px; color: var(--ink); font-size:13.5px; }
.cmdk-results a:hover, .cmdk-results a.active { background: var(--accent-tint); text-decoration:none; }
.cmdk-results .kind { color: var(--ink-muted); font-size: 11.5px; }
.cmdk-empty { padding: 20px 18px; color: var(--ink-muted); font-size: 13px; }

/* ---- Misc ---- */
.muted { color: var(--ink-muted); }
.text-secondary { color: var(--ink-secondary); }
.mt-0 { margin-top:0; } .mb-0 { margin-bottom:0; }
.section-title { font-size: 12px; text-transform:uppercase; letter-spacing:.05em; color: var(--ink-muted); font-weight:700; margin: 18px 0 8px; }
.section-title:first-child { margin-top: 0; }
.divider { border:none; border-top:1px solid var(--border); margin: 14px 0; }
.timeline { display:flex; flex-direction:column; gap: 10px; }
.timeline-item { display:flex; gap: 10px; }
.timeline-item .icon { width: 26px; height:26px; border-radius:50%; background: var(--accent-tint); color: var(--accent-dark); display:flex; align-items:center; justify-content:center; font-size:12px; flex-shrink:0; }
.timeline-item .body { flex:1; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 8px 11px; }
.timeline-item .meta { font-size: 11.5px; color: var(--ink-muted); }
.chart-empty { color: var(--ink-muted); font-size: 13px; padding: 20px 0; }
.chart-legend { display:flex; flex-direction:column; gap:6px; margin-top:10px; font-size:12.5px; }
.chart-legend .legend-swatch { display:inline-block; width:10px; height:10px; border-radius:2px; margin-right:6px; }
.score-bar-track { background: var(--border); border-radius: 6px; height: 8px; overflow:hidden; }
.score-bar-fill { height:100%; background: var(--accent); }
.pagination { display:flex; gap:6px; margin-top: 14px; justify-content:flex-end; }
.ai-stub { background: var(--accent-tint); border: 1px dashed var(--accent-tint-2); border-radius: var(--radius-md); padding: 12px 14px; font-size: 12.5px; color: var(--accent-dark); }
.risk-list li { padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 13px; }
.risk-list li:last-child { border-bottom: none; }
.two-col { display:grid; grid-template-columns: 2fr 1fr; gap: 16px; align-items:start; }
@media (max-width: 980px) { .two-col { grid-template-columns: 1fr; } }

/* ---- Mobile nav ---- */
.menu-toggle { display:none; background:none; border:1px solid var(--border-strong); border-radius: var(--radius-sm); padding:6px 9px; cursor:pointer; font-size:15px; }
.sidebar-backdrop { display:none; position: fixed; inset:0; background: rgba(11,11,11,0.4); z-index: 49; }
@media (max-width: 860px) {
  .menu-toggle { display:inline-flex; }
  .sidebar {
    position: fixed; top:0; left:0; height:100vh; z-index: 50; transform: translateX(-100%);
    transition: transform .2s ease; box-shadow: var(--shadow-md);
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-backdrop.open { display:block; }
  .content { padding: 16px; }
  .topbar { padding: 10px 14px; }
}