/* ===== StateFlow Widgets — Reusable, embeddable component styles ===== */
/* Self-contained: brings its own CSS vars if the host page has none.     */

.sf-widget {
  --sf-bg: var(--bg, #ffffff);
  --sf-fg: var(--fg, #1e293b);
  --sf-muted: var(--muted, #64748b);
  --sf-border: var(--border, #e2e8f0);
  --sf-surface: var(--surface, #ffffff);
  --sf-surface-2: var(--surface-2, #f8fafc);
  --sf-accent: var(--accent, #3b82f6);
  --sf-accent-2: var(--accent-2, #8b5cf6);
  --sf-accent-3: var(--accent-3, #06b6d4);
  --sf-green: var(--green, #10b981);
  --sf-brand: var(--brand, #0f172a);
  --sf-radius: var(--radius, 12px);
  --sf-radius-lg: var(--radius-lg, 20px);
  --sf-shadow: 0 1px 3px rgba(0,0,0,0.08);
  --sf-shadow-lg: 0 10px 40px rgba(0,0,0,0.1);

  font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
  color: var(--sf-fg);
  line-height: 1.5;
  box-sizing: border-box;
}

.sf-widget *, .sf-widget *::before, .sf-widget *::after {
  box-sizing: border-box;
}

/* ── KPI Card ─────────────────────────────────────────────────── */
.sf-kpi-card {
  border: 1px solid var(--sf-border, #e2e8f0);
  border-left: 4px solid var(--sf-accent, var(--accent, #3b82f6));
  background: linear-gradient(180deg, #ffffff 0%, var(--sf-surface-2, #f8fafc) 100%);
  border-radius: var(--sf-radius, 12px);
  padding: 10px;
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.sf-kpi-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.12);
}

.sf-kpi-card[data-tone="alert"],
.sf-kpi-card[data-tone="bad"],
.sf-kpi-card[data-tone="danger"] {
  border-color: #fecaca;
  border-left-color: #ef4444;
  background: linear-gradient(180deg, #fff 0%, #fef2f2 100%);
}

.sf-kpi-card[data-tone="success"],
.sf-kpi-card[data-tone="good"] {
  border-color: #bbf7d0;
  border-left-color: #16a34a;
  background: linear-gradient(180deg, #fff 0%, #f0fdf4 100%);
}

.sf-kpi-card[data-tone="warn"] {
  border-color: #fde68a;
  border-left-color: #f59e0b;
  background: linear-gradient(180deg, #fff 0%, #fffbeb 100%);
}

.sf-kpi-card-icon {
  font-size: 1.5rem;
  margin-bottom: 6px;
  line-height: 1;
}

.sf-kpi-card-label {
  font-size: 0.74rem;
  color: var(--sf-muted, #64748b);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.sf-kpi-card-value {
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1.2;
  color: var(--sf-brand, #0f172a);
}

.sf-kpi-card[data-tone="alert"] .sf-kpi-card-value,
.sf-kpi-card[data-tone="bad"] .sf-kpi-card-value,
.sf-kpi-card[data-tone="danger"] .sf-kpi-card-value {
  color: #dc2626;
}

.sf-kpi-card[data-tone="success"] .sf-kpi-card-value,
.sf-kpi-card[data-tone="good"] .sf-kpi-card-value {
  color: #16a34a;
}

.sf-kpi-card[data-tone="warn"] .sf-kpi-card-value {
  color: #d97706;
}

.sf-kpi-card-sub {
  font-size: 0.78rem;
  color: var(--sf-muted, #64748b);
}

.sf-kpi-card-trend {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 0.72rem;
  font-weight: 700;
  margin-top: 4px;
}

.sf-kpi-card-trend[data-dir="up"]   { color: #16a34a; }
.sf-kpi-card-trend[data-dir="down"] { color: #dc2626; }
.sf-kpi-card-trend[data-dir="flat"] { color: var(--sf-muted); }

/* ── KPI Grid (card container) ────────────────────────────────── */
.sf-kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

/* ── Data Table ───────────────────────────────────────────────── */
.sf-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--sf-radius, var(--radius, 12px));
  border: 1px solid var(--sf-border, var(--border, #e2e8f0));
  box-shadow: var(--sf-shadow, 0 6px 16px rgba(15, 23, 42, 0.06));
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.sf-table-wrap:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.12);
}

.sf-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
}

.sf-table th,
.sf-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--sf-border, var(--border, #e2e8f0));
}

.sf-table thead th {
  background: var(--sf-surface-2, var(--surface-2, #f8fafc));
  color: var(--sf-muted, var(--muted, #64748b));
  font-weight: 700;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  position: sticky;
  top: 0;
  z-index: 1;
}

.sf-table tbody tr { transition: background 0.15s ease; }
.sf-table tbody tr:nth-child(even) { background: var(--sf-surface-2, var(--surface-2, #fcfdff)); }
.sf-table tbody tr:hover { background: #eff6ff; }

.sf-table-row-good  { border-left: 3px solid #16a34a; }
.sf-table-row-warn  { border-left: 3px solid #f59e0b; }
.sf-table-row-bad   { border-left: 3px solid #dc2626; }

.sf-table-date {
  white-space: nowrap;
  color: var(--sf-muted, var(--muted, #64748b));
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
}

.sf-table td .sf-badge {
  font-size: 0.7rem;
  padding: 2px 8px;
}

/* ── Badge ────────────────────────────────────────────────────── */
.sf-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  border: 1px solid var(--sf-border, var(--border, #cbd5e1));
  white-space: nowrap;
  color: var(--sf-fg, var(--fg, #334155));
  background: var(--sf-surface-2, var(--surface-2, #f1f5f9));
}

.sf-badge-good { color: #166534; background: #dcfce7; border-color: #86efac; }
.sf-badge-warn { color: #92400e; background: #fef3c7; border-color: #fcd34d; }
.sf-badge-bad  { color: #991b1b; background: #fee2e2; border-color: #fca5a5; }
.sf-badge-info { color: #1e40af; background: #dbeafe; border-color: #93c5fd; }

/* ── Horizontal Bar Chart ─────────────────────────────────────── */
.sf-bar-chart {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sf-bar-row {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.sf-bar-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.8rem;
}

.sf-bar-key {
  font-weight: 600;
  color: var(--sf-fg);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 60%;
}

.sf-bar-val {
  font-weight: 700;
  color: var(--sf-muted);
  font-size: 0.78rem;
}

.sf-bar-track {
  height: 8px;
  background: var(--sf-surface-2);
  border-radius: 999px;
  overflow: hidden;
}

.sf-bar-fill {
  height: 100%;
  border-radius: 999px;
  transition: width 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  transform-origin: left center;
  animation: sf-bar-grow 1.4s cubic-bezier(.22,1,.36,1) backwards;
}
.sf-bar-row:nth-child(2) .sf-bar-fill { animation-delay: .15s; }
.sf-bar-row:nth-child(3) .sf-bar-fill { animation-delay: .3s; }
.sf-bar-row:nth-child(4) .sf-bar-fill { animation-delay: .45s; }
.sf-bar-row:nth-child(5) .sf-bar-fill { animation-delay: .6s; }
.sf-bar-row:nth-child(n+6) .sf-bar-fill { animation-delay: .75s; }

/* ── Threshold Chips ──────────────────────────────────────────── */
.sf-threshold-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.sf-threshold-chip {
  border: 1px solid var(--sf-border);
  background: var(--sf-surface-2);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.78rem;
  color: var(--sf-muted);
}

.sf-threshold-chip strong { color: var(--sf-fg); }

/* ── Stat Row (inline label: value) ───────────────────────────── */
.sf-stat-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 28px;
  padding: 10px 0;
}

.sf-stat {
  display: flex;
  flex-direction: column;
}

.sf-stat-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--sf-muted);
  font-weight: 600;
}

.sf-stat-value {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--sf-brand);
}

/* ── Progress Ring (CSS-only) ─────────────────────────────────── */
.sf-progress-ring {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
}

.sf-progress-ring svg {
  transform: rotate(-90deg);
  width: 100%;
  height: 100%;
}

.sf-progress-ring circle {
  fill: none;
  stroke-width: 6;
  stroke-linecap: round;
}

.sf-progress-ring .sf-ring-bg {
  stroke: var(--sf-border);
}

.sf-progress-ring .sf-ring-fill {
  stroke: var(--sf-accent);
  transition: stroke-dashoffset 0.8s cubic-bezier(0.22, 1, 0.36, 1);
  animation: sf-ring-draw 2s cubic-bezier(.22,1,.36,1);
}

.sf-progress-ring-label {
  position: absolute;
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--sf-fg);
}

/* ── Pie Chart ────────────────────────────────────────────────── */
.sf-pie-chart {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  flex-wrap: wrap;
}

.sf-pie-wrap {
  width: 160px;
  height: 160px;
  flex: 0 0 auto;
  position: relative;
  perspective: 700px;
}

.sf-pie {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  border: 1px solid var(--sf-border, var(--border, rgba(100,116,139,.2)));
  position: relative;
  transform: rotateX(50deg);
  transform-origin: center center;
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.14);
  animation: sf-pie-reveal 2s cubic-bezier(.25,.46,.45,.94);
}

.sf-pie::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  transform: translateY(10px);
  background: rgba(15, 23, 42, 0.10);
  z-index: -1;
}

.sf-pie::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle at 32% 26%, rgba(255,255,255,0.35), rgba(255,255,255,0) 45%);
  pointer-events: none;
}

/* Donut variant */
.sf-pie-donut::after {
  inset: 28%;
  background: var(--sf-surface, var(--surface, #fff));
  border-radius: 50%;
  box-shadow: inset 0 1px 4px rgba(0,0,0,.08);
}

.sf-pie-legend {
  display: grid;
  gap: 6px;
  flex: 1 1 200px;
  min-width: 0;
  align-self: center;
}

.sf-pie-legend-item {
  display: grid;
  grid-template-columns: 10px 1fr auto;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--sf-fg, var(--fg, #1e293b));
  border-bottom: 1px dashed rgba(100, 116, 139, 0.2);
  padding-bottom: 4px;
}

.sf-pie-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.sf-pie-legend-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sf-pie-legend-value {
  color: var(--sf-muted, var(--muted, #64748b));
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.75rem;
}

@media (max-width: 480px) {
  .sf-pie-chart { flex-direction: column; align-items: center; }
  .sf-pie-legend { flex-basis: auto; }
}

/* ── Section Panel (wrapper for widget groups) ────────────────── */
.sf-panel {
  background: var(--sf-surface);
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius-lg);
  padding: 24px;
  box-shadow: var(--sf-shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.sf-panel:hover {
  transform: translateY(-2px);
  box-shadow: var(--sf-shadow-lg);
  border-color: rgba(59,130,246,0.15);
}

.sf-panel-title {
  margin: 0 0 4px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--sf-brand);
}

.sf-panel-sub {
  margin: 0 0 16px;
  font-size: 0.85rem;
  color: var(--sf-muted);
}

/* ── Dashboard Grid (layout for multiple panels) ──────────────── */
.sf-dashboard {
  display: grid;
  gap: 16px;
}

.sf-dashboard[data-cols="1"] { grid-template-columns: 1fr; }
.sf-dashboard[data-cols="2"] { grid-template-columns: repeat(2, 1fr); }
.sf-dashboard[data-cols="3"] { grid-template-columns: repeat(3, 1fr); }
.sf-dashboard[data-cols="4"] { grid-template-columns: repeat(4, 1fr); }
.sf-dashboard:not([data-cols]) { grid-template-columns: 1fr; }

.sf-dashboard .sf-panel[data-span="2"] { grid-column: span 2; }
.sf-dashboard .sf-panel[data-span="3"] { grid-column: span 3; }
.sf-dashboard .sf-panel[data-span="full"] { grid-column: 1 / -1; }

/* ── Chart entrance animations ────────────────────────────────── */
@keyframes sf-bar-grow {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}
@keyframes sf-pie-reveal {
  from { clip-path: circle(0% at 50% 50%); }
  to   { clip-path: circle(100% at 50% 50%); }
}
@keyframes sf-ring-draw {
  from { stroke-dashoffset: 213.6; }
}

@media (max-width: 768px) {
  .sf-dashboard { grid-template-columns: 1fr !important; }
  .sf-dashboard .sf-panel[data-span] { grid-column: auto; }
  .sf-kpi-grid { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
}