/* =========================================================================
   ft-core.css — FamousTec v2 tools shared styles
   Brand tokens + drop zone + privacy banner + charts + tables + controls.
   WCAG 2.1 AA contrast. Works alongside the v1 tool page CSS.
   ========================================================================= */

:root {
  --ft-bg: #f7f9fc;
  --ft-surface: #ffffff;
  --ft-border: #e1e8f0;
  --ft-border-strong: #c7d2e0;
  --ft-text: #0b1a2b;
  --ft-text-muted: #4a5b72;
  --ft-text-soft: #6b7c94;
  --ft-brand: #0b1a2b;
  --ft-brand-accent: #1a3a5f;
  --ft-green: #22c55e;
  --ft-green-dark: #16a34a;
  --ft-green-soft: #dcfce7;
  --ft-amber: #f59e0b;
  --ft-red: #dc2626;
  --ft-red-soft: #fee2e2;
  --ft-info: #0ea5e9;
  --ft-info-soft: #e0f2fe;
  --ft-radius: 10px;
  --ft-radius-sm: 6px;
  --ft-shadow-sm: 0 1px 2px rgba(11, 26, 43, .06);
  --ft-shadow: 0 4px 12px rgba(11, 26, 43, .08);
  --ft-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --ft-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* ------- Privacy banner ------- */
.ft-privacy-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--ft-green-soft);
  color: #064e2d;
  border: 1px solid #86efac;
  border-radius: var(--ft-radius);
  padding: 12px 16px;
  font-size: 14px;
  line-height: 1.5;
  margin: 0 0 20px;
}
.ft-privacy-banner .ft-lock {
  flex: 0 0 auto;
  width: 22px; height: 22px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--ft-green-dark);
  color: #fff;
  border-radius: 50%;
  font-size: 13px;
  font-weight: 700;
}
.ft-privacy-banner strong { color: #064e2d; }
.ft-privacy-banner a {
  color: #065f46;
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ------- Drop zone ------- */
.ft-dropzone {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 20px;
  border: 2px dashed var(--ft-border-strong);
  border-radius: var(--ft-radius);
  background: var(--ft-surface);
  transition: border-color .15s, background .15s;
  cursor: pointer;
  font-family: var(--ft-font);
}
.ft-dropzone:hover { border-color: var(--ft-brand-accent); }
.ft-dropzone.ft-drag { border-color: var(--ft-green-dark); background: var(--ft-green-soft); }
.ft-dropzone.ft-has-file { border-style: solid; border-color: var(--ft-green-dark); background: #f0fdf4; }
.ft-dropzone input[type="file"] { position: absolute; opacity: 0; width: 100%; height: 100%; top: 0; left: 0; cursor: pointer; }
.ft-dropzone .ft-dz-icon { font-size: 32px; margin-bottom: 8px; }
.ft-dropzone .ft-dz-title { font-size: 16px; font-weight: 600; color: var(--ft-text); margin: 0 0 4px; }
.ft-dropzone .ft-dz-hint { font-size: 13px; color: var(--ft-text-soft); margin: 0; }
.ft-dropzone .ft-dz-sample {
  margin-top: 10px;
  font-size: 13px;
  color: var(--ft-brand-accent);
  text-decoration: underline;
  cursor: pointer;
  background: none; border: 0; padding: 0;
}
.ft-dropzone .ft-dz-sample:hover { color: var(--ft-green-dark); }
.ft-dz-meta {
  display: flex; gap: 14px; flex-wrap: wrap; justify-content: center;
  font-size: 13px; color: var(--ft-text-muted);
  margin-top: 8px;
}
.ft-dz-meta b { color: var(--ft-text); font-weight: 600; }

/* ------- KPI cards ------- */
.ft-kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin: 24px 0;
}
.ft-kpi {
  background: var(--ft-surface);
  border: 1px solid var(--ft-border);
  border-radius: var(--ft-radius);
  padding: 16px 18px;
  box-shadow: var(--ft-shadow-sm);
}
.ft-kpi .ft-kpi-label { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--ft-text-soft); margin: 0; }
.ft-kpi .ft-kpi-value { font-size: 26px; font-weight: 700; color: var(--ft-text); margin: 4px 0 0; font-variant-numeric: tabular-nums; }
.ft-kpi .ft-kpi-sub { font-size: 12px; color: var(--ft-text-muted); margin: 2px 0 0; }
.ft-kpi.ft-kpi-warn { border-left: 4px solid var(--ft-amber); }
.ft-kpi.ft-kpi-danger { border-left: 4px solid var(--ft-red); }
.ft-kpi.ft-kpi-good  { border-left: 4px solid var(--ft-green-dark); }

/* ------- Chart cards ------- */
.ft-chart-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: 18px;
  margin: 24px 0;
}
.ft-chart-card {
  background: var(--ft-surface);
  border: 1px solid var(--ft-border);
  border-radius: var(--ft-radius);
  padding: 16px 18px;
  box-shadow: var(--ft-shadow-sm);
}
.ft-chart-card h3 { font-size: 14px; font-weight: 600; color: var(--ft-text); margin: 0 0 12px; }
.ft-chart-card .ft-chart-wrap { position: relative; height: 280px; }

/* ------- Data table ------- */
.ft-table-wrap {
  background: var(--ft-surface);
  border: 1px solid var(--ft-border);
  border-radius: var(--ft-radius);
  overflow: hidden;
  margin: 24px 0;
  box-shadow: var(--ft-shadow-sm);
}
.ft-table-toolbar {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--ft-border);
  background: var(--ft-bg);
  flex-wrap: wrap;
}
.ft-table-toolbar h3 { margin: 0; font-size: 14px; font-weight: 600; flex: 1 1 auto; }
.ft-table-scroll { max-height: 500px; overflow: auto; }
.ft-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}
.ft-table th, .ft-table td {
  text-align: left;
  padding: 8px 12px;
  border-bottom: 1px solid var(--ft-border);
  vertical-align: top;
}
.ft-table th {
  position: sticky; top: 0;
  background: var(--ft-bg);
  font-weight: 600;
  color: var(--ft-text-muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .03em;
  z-index: 1;
}
.ft-table tbody tr:hover { background: #f8fafc; }
.ft-table td.ft-num, .ft-table th.ft-num { text-align: right; }
.ft-table .ft-pill {
  display: inline-block; padding: 2px 8px; border-radius: 99px;
  font-size: 11px; font-weight: 600; text-transform: uppercase;
}
.ft-table .ft-pill-good { background: var(--ft-green-soft); color: var(--ft-green-dark); }
.ft-table .ft-pill-warn { background: #fef3c7; color: #92400e; }
.ft-table .ft-pill-danger { background: var(--ft-red-soft); color: var(--ft-red); }

/* ------- Filter controls ------- */
.ft-filters {
  display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end;
  background: var(--ft-surface);
  border: 1px solid var(--ft-border);
  border-radius: var(--ft-radius);
  padding: 14px 16px;
  margin: 24px 0;
  box-shadow: var(--ft-shadow-sm);
}
.ft-filter { display: flex; flex-direction: column; gap: 4px; min-width: 140px; }
.ft-filter label { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--ft-text-soft); }
.ft-filter input, .ft-filter select {
  font-family: var(--ft-font);
  font-size: 14px;
  padding: 8px 10px;
  border: 1px solid var(--ft-border-strong);
  border-radius: var(--ft-radius-sm);
  background: #fff;
  color: var(--ft-text);
  min-width: 140px;
}
.ft-filter input:focus, .ft-filter select:focus {
  outline: 2px solid var(--ft-info);
  outline-offset: 1px;
  border-color: var(--ft-info);
}

/* ------- Buttons ------- */
.ft-btn {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--ft-font);
  font-size: 14px; font-weight: 600;
  padding: 9px 16px;
  border-radius: var(--ft-radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background .12s, transform .05s;
  line-height: 1.2;
}
.ft-btn:active { transform: translateY(1px); }
.ft-btn-primary { background: var(--ft-brand); color: #fff; border-color: var(--ft-brand); }
.ft-btn-primary:hover { background: var(--ft-brand-accent); border-color: var(--ft-brand-accent); }
.ft-btn-secondary { background: #fff; color: var(--ft-brand); border-color: var(--ft-border-strong); }
.ft-btn-secondary:hover { border-color: var(--ft-brand); }
.ft-btn-ai { background: linear-gradient(135deg, #1a3a5f, #22c55e); color: #fff; border-color: transparent; }
.ft-btn-ai:hover { background: linear-gradient(135deg, #0b1a2b, #16a34a); }
.ft-btn-ai[disabled], .ft-btn[disabled] { opacity: .5; cursor: not-allowed; transform: none; }

/* ------- Export row ------- */
.ft-export-row {
  display: flex; gap: 10px; flex-wrap: wrap;
  margin: 24px 0;
  padding: 14px 16px;
  background: var(--ft-bg);
  border: 1px solid var(--ft-border);
  border-radius: var(--ft-radius);
}
.ft-export-row .ft-export-label {
  font-size: 13px; font-weight: 600; color: var(--ft-text-muted);
  display: flex; align-items: center; margin-right: 6px;
}

/* ------- AI Insights panel ------- */
.ft-ai-panel {
  background: var(--ft-surface);
  border: 1px solid var(--ft-border);
  border-radius: var(--ft-radius);
  padding: 18px 20px;
  margin: 24px 0;
  box-shadow: var(--ft-shadow-sm);
}
.ft-ai-panel h3 {
  display: flex; align-items: center; gap: 8px;
  font-size: 16px; font-weight: 700; color: var(--ft-text);
  margin: 0 0 8px;
}
.ft-ai-panel h3 .ft-ai-spark { color: var(--ft-green-dark); }
.ft-ai-panel .ft-ai-sub { font-size: 13px; color: var(--ft-text-muted); margin: 0 0 14px; }
.ft-ai-panel .ft-ai-result { font-size: 14px; line-height: 1.65; color: var(--ft-text); }
.ft-ai-panel .ft-ai-result h4 { font-size: 15px; margin: 16px 0 6px; }
.ft-ai-panel .ft-ai-result p { margin: 0 0 12px; }
.ft-ai-panel .ft-ai-result ul, .ft-ai-panel .ft-ai-result ol { padding-left: 22px; margin: 0 0 12px; }
.ft-ai-skel { display: grid; gap: 8px; }
.ft-ai-skel span {
  display: block; height: 12px; border-radius: 4px;
  background: linear-gradient(90deg, #eef2f7 25%, #f7f9fc 50%, #eef2f7 75%);
  background-size: 200% 100%;
  animation: ft-skel 1.2s infinite linear;
}
@keyframes ft-skel { 0% { background-position: 200% 0 } 100% { background-position: -200% 0 } }

/* ------- Modal (transparency + error) ------- */
.ft-modal-backdrop {
  position: fixed; inset: 0; background: rgba(11, 26, 43, .55);
  display: flex; align-items: center; justify-content: center;
  z-index: 9999; padding: 20px;
  animation: ft-fade .15s;
}
@keyframes ft-fade { from { opacity: 0 } to { opacity: 1 } }
.ft-modal {
  background: #fff; border-radius: var(--ft-radius);
  max-width: 640px; width: 100%; max-height: 86vh; overflow: auto;
  box-shadow: 0 20px 50px rgba(11, 26, 43, .35);
  padding: 24px 26px;
}
.ft-modal h3 { font-size: 18px; margin: 0 0 10px; color: var(--ft-text); }
.ft-modal p { font-size: 14px; color: var(--ft-text-muted); line-height: 1.55; margin: 0 0 12px; }
.ft-modal pre {
  background: #0f172a; color: #e2e8f0;
  font-family: var(--ft-mono); font-size: 12px;
  padding: 14px 16px; border-radius: var(--ft-radius-sm);
  max-height: 320px; overflow: auto;
  margin: 0 0 16px;
}
.ft-modal .ft-modal-actions { display: flex; gap: 10px; justify-content: flex-end; }

/* ------- Inline badge ------- */
.ft-badge {
  display: inline-block; padding: 3px 9px; border-radius: 99px;
  font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em;
  background: var(--ft-info-soft); color: #0369a1;
}
.ft-badge-new { background: var(--ft-green-soft); color: var(--ft-green-dark); }

/* ------- Status messages ------- */
.ft-msg { padding: 12px 14px; border-radius: var(--ft-radius-sm); font-size: 13px; margin: 12px 0; }
.ft-msg-info { background: var(--ft-info-soft); color: #075985; border: 1px solid #bae6fd; }
.ft-msg-warn { background: #fef3c7; color: #92400e; border: 1px solid #fde68a; }
.ft-msg-error { background: var(--ft-red-soft); color: var(--ft-red); border: 1px solid #fecaca; }

/* ------- PDF footer (used inline before export) ------- */
.ft-pdf-footer {
  font-size: 11px; color: var(--ft-text-soft);
  padding: 10px 12px; text-align: center;
}

/* ------- Responsive ------- */
@media (max-width: 640px) {
  .ft-chart-card .ft-chart-wrap { height: 220px; }
  .ft-kpi .ft-kpi-value { font-size: 22px; }
  .ft-filter { flex: 1 1 100%; }
}

/* ------- Screen reader only (accessibility) ------- */
.ft-sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}