/* ============================================================
   Modbus tracer panel — embedded on /sites/:id/live (admin)
   and /v/:idSite (public viewer). Auto-armed by the backend on
   first SSE subscriber, no manual Start/Stop.
   ============================================================ */

.trace-panel { display: flex; flex-direction: column; gap: var(--space-3); }
.trace-panel__header {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-3); flex-wrap: wrap;
}
.trace-panel__heading {
  display: flex; align-items: center; gap: var(--space-2); flex-wrap: wrap;
}
.trace-panel__title { margin: 0; font-size: 1.05rem; font-weight: 600; }
.trace-panel__hint {
  color: var(--color-text-muted, #6b6b6b);
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
}
.trace-panel__count {
  color: var(--color-text-muted, #6b6b6b);
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
}
.trace-panel__count strong { color: var(--color-text, #1a1a1a); font-weight: 600; }
.trace-panel__count-sep { margin: 0 0.15rem; opacity: 0.6; }

.trace-panel__filters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.5rem 0.75rem;
  align-items: end;
}
.trace-panel__filter {
  display: flex; flex-direction: column; gap: 0.25rem;
  margin: 0;
}
.trace-panel__filter-label {
  font-size: 0.78rem; font-weight: 500;
  color: var(--color-text-muted, #6b6b6b);
  text-transform: uppercase; letter-spacing: 0.04em;
}
.trace-panel__filter input[type="text"],
.trace-panel__filter select {
  padding: 0.4rem 0.55rem;
  border: 1px solid var(--color-border, #e2e2e2);
  border-radius: var(--radius-sm, 0.4rem);
  background: var(--color-surface, #fff);
  font-size: 0.9rem;
  height: 34px;
  font: inherit;
  color: var(--color-text);
}
.trace-panel__filter input[type="text"]:focus,
.trace-panel__filter select:focus {
  outline: none;
  border-color: var(--color-primary, #1d4fd7);
  box-shadow: 0 0 0 3px rgba(29, 79, 215, 0.15);
}
.trace-panel__filter--check {
  flex-direction: row; align-items: center; gap: 0.4rem;
  padding-bottom: 0.35rem;
}
.trace-panel__filter--check input { margin: 0; }

.trace-panel__actions {
  display: flex; align-items: center; gap: var(--space-2);
  flex-wrap: wrap;
}

.trace-panel__info,
.trace-panel__error {
  margin: 0;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-md, 6px);
  font-size: 0.85rem;
}
.trace-panel__info {
  background: var(--color-blue-50, #eff6ff);
  color: var(--color-text);
}
.trace-panel__error {
  background: var(--color-red-50, #fef2f2);
  color: var(--color-red-800, #991b1b);
}

.trace-panel__table-wrap {
  max-height: 60vh;
  overflow: auto;
  border: 1px solid var(--color-border, #e5e5e5);
  border-radius: var(--radius-sm, 0.4rem);
  background: var(--color-surface, #fff);
}
.trace-panel__table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
  font-family: var(--font-mono, "Geist Mono", monospace);
}
.trace-panel__table th {
  position: sticky; top: 0; z-index: 1;
  background: var(--color-surface-alt, #f7f7f8);
  text-align: left; font-weight: 600;
  color: var(--color-text-muted, #6b6b6b);
  padding: 7px 10px;
  border-bottom: 1px solid var(--color-border, #e5e5e5);
  font-family: var(--font-sans, sans-serif);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.trace-panel__th-narrow { width: 1%; white-space: nowrap; }
.trace-panel__table td {
  padding: 4px 10px;
  border-bottom: 1px solid var(--color-border, #f3f3f3);
  vertical-align: top;
  white-space: nowrap;
}
.trace-panel__table td.trace-panel__cell--vals {
  white-space: pre-wrap;
  word-break: break-word;
  max-width: 28ch;
}
.trace-panel__table tr.trace-panel__row--err td {
  background: var(--color-red-50, #fef2f2);
}
.trace-panel__empty {
  text-align: center;
  color: var(--color-text-muted, #6b6b6b);
  padding: 1.5rem 1rem;
  font-family: var(--font-sans, sans-serif);
  white-space: normal;
}

/* Mobile / narrow viewport — frames render as cards instead of a 9-col
   table that would force horizontal scroll on a phone. */
@media (max-width: 768px) {
  .trace-panel__table-wrap {
    max-height: 60vh;
    border: none;
    background: transparent;
    padding: 0;
  }
  .trace-panel__table thead { display: none; }
  .trace-panel__table,
  .trace-panel__table tbody,
  .trace-panel__table tr,
  .trace-panel__table td {
    display: block;
    width: auto;
  }
  .trace-panel__table tr {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm, 0.4rem);
    margin-bottom: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--color-surface, #fff);
  }
  .trace-panel__table tr.trace-panel__row--err {
    border-color: var(--color-red-200, #fecaca);
  }
  .trace-panel__table td {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: var(--space-2);
    padding: 3px 0;
    border: none;
    white-space: normal;
  }
  .trace-panel__table td::before {
    content: attr(data-label);
    color: var(--color-text-muted);
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 600;
    font-family: var(--font-sans, sans-serif);
    flex: 0 0 auto;
  }
  .trace-panel__table td.trace-panel__cell--vals {
    flex-direction: column;
    align-items: flex-start;
    max-width: none;
  }
  .trace-panel__header { flex-direction: column; align-items: stretch; }
  .trace-panel__actions { flex-wrap: wrap; }
}