/* ═══════════════════════════════════════════════════════════════
   TriverseHub · Utility Tools — Component Styles
   Uses CSS variables from theme.css — no hardcoded colors.
   ═══════════════════════════════════════════════════════════════ */

/* ── Utility shell wrapper ──────────────────────────────────── */
.utility-shell {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: visible;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

/* ── Toolbar ────────────────────────────────────────────────── */
.utility-toolbar {
  position: sticky;
  top: calc(var(--header-height) + 0.65rem);
  z-index: 25;
  background: var(--toolbar-bg);
  border-bottom: 1px solid var(--toolbar-border);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.utility-toolbar h2 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text);
  margin: 0 0 0.2rem 0;
  letter-spacing: -0.02em;
}

/* ── Tab buttons ────────────────────────────────────────────── */
.utility-tab-btn {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  min-height: 40px;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  touch-action: manipulation;
}
.utility-tab-btn:hover:not(.active) {
  background: var(--surface-alt);
}
.utility-tab-btn.active {
  background: var(--tab-active-bg);
  border-color: var(--tab-active-border);
  color: var(--tab-active-text);
  font-weight: 600;
}
.utility-tab-btn:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

/* ── Panes ──────────────────────────────────────────────────── */
.utility-pane {
  display: none;
  padding: 1.25rem;
}
.utility-pane.active {
  display: block;
}

/* ── Form grid ──────────────────────────────────────────────── */
.utility-form {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(3, 1fr);
}

/* ── Field ──────────────────────────────────────────────────── */
.utility-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.utility-field label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
}
.utility-field .form-control,
.utility-field .form-select {
  background: var(--input-bg);
  border-color: var(--input-border);
  color: var(--input-text);
  min-height: 42px;
  border-radius: var(--radius-sm);
}
.utility-field .form-control:focus,
.utility-field .form-select:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 .2rem rgba(79 70 229 / .15);
  background: var(--input-bg);
  color: var(--input-text);
}

/* ── Actions row ────────────────────────────────────────────── */
.utility-actions {
  display: flex;
  gap: 0.65rem;
  margin-top: 0.65rem;
  flex-wrap: wrap;
}
.utility-actions .btn {
  min-height: 42px;
  font-weight: 600;
  touch-action: manipulation;
}

.utility-export-actions {
  margin-bottom: 0.9rem;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* ── Summary box ────────────────────────────────────────────── */
.utility-summary {
  border: 1px solid var(--summary-border);
  background: var(--summary-bg);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}
.utility-summary-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--summary-title);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.utility-summary-grid {
  display: grid;
  gap: 0.5rem;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

/* ── Chip ───────────────────────────────────────────────────── */
.utility-chip {
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--summary-border);
  padding: 0.4rem 0.6rem;
  font-size: 0.83rem;
  color: var(--text);
}
.utility-chip strong {
  color: var(--text);
}

/* ── KPI cards ──────────────────────────────────────────────── */
.utility-kpis {
  display: grid;
  gap: 0.8rem;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  margin-bottom: 1rem;
}
.utility-kpi {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--kpi-bg);
  padding: 1.25rem;
  transition: box-shadow 0.15s;
}
.utility-kpi:hover {
  box-shadow: var(--shadow-sm);
}
.utility-kpi-label {
  font-size: 0.78rem;
  color: var(--kpi-label);
  margin-bottom: 0.25rem;
  font-weight: 500;
}
.utility-kpi-value {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}

/* ── Result table ───────────────────────────────────────────── */
.utility-result-table-wrap {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: auto;
  max-height: 420px;
  margin-bottom: 0.8rem;
}
.utility-result-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  background: var(--surface);
  min-width: 620px;
}
.utility-result-table th,
.utility-result-table td {
  border-bottom: 1px solid var(--table-border);
  padding: 0.5rem 0.65rem;
  text-align: left;
  white-space: nowrap;
  color: var(--text);
}
.utility-result-table th {
  position: sticky;
  top: 0;
  background: var(--table-header-bg);
  color: var(--table-header-text);
  font-weight: 600;
  z-index: 1;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.utility-result-table tbody tr {
  cursor: pointer;
  transition: background 0.1s;
}
.utility-result-table tbody tr:hover td {
  background: var(--table-row-hover);
}
.utility-result-table tbody tr.selected td {
  background: var(--table-selected);
}

/* ── Help text ──────────────────────────────────────────────── */
.utility-help {
  color: var(--text-muted);
  font-size: 0.83rem;
  margin: 0;
  line-height: 1.5;
}
.utility-abbr {
  text-decoration: underline dotted;
  cursor: help;
}

/* ── Chart grid ─────────────────────────────────────────────── */
.utility-chart-grid {
  margin-top: 0.75rem;
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.utility-chart-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--chart-card-bg);
  padding: 1.25rem;
}
.utility-chart-title {
  margin: 0 0 0.55rem;
  font-size: 0.9rem;
  color: var(--chart-title);
  font-weight: 600;
}
.utility-chart-canvas {
  width: 100% !important;
  height: 260px !important;
}

/* ── Todo items ─────────────────────────────────────────────── */
.todo-inline-list {
  display: grid;
  gap: 0.5rem;
  margin-top: 0.7rem;
}
.todo-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--todo-item-bg);
  padding: 0.55rem 0.7rem;
  min-height: 44px;
}
.todo-item.done .todo-text {
  text-decoration: line-through;
  color: var(--todo-done-text);
}

/* ── Responsive utility ─────────────────────────────────────── */
@media (max-width: 768px) {
  .utility-form {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .utility-toolbar {
    top: calc(var(--header-height) + 0.4rem);
    padding: 0.75rem;
    gap: 0.5rem;
  }

  .utility-pane {
    padding: 1rem;
  }

  .utility-form {
    grid-template-columns: 1fr;
  }

  .utility-kpis {
    grid-template-columns: repeat(2, 1fr);
  }

  .utility-summary-grid {
    grid-template-columns: 1fr;
  }

  .utility-chart-grid {
    grid-template-columns: 1fr;
  }

  .utility-actions {
    flex-direction: column;
  }
  .utility-actions .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .utility-form {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 360px) {
  .utility-kpis {
    grid-template-columns: 1fr;
  }
}