/* ==================== ERROR TRACKING ==================== */
.error-thumb {
  background: var(--badge-info-bg);
  min-width: 200px;
  min-height: 150px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  cursor: pointer;
}
.error-thumb:empty {
  min-width: 200px;
  min-height: 150px;
}
.error-thumb[src=""] {
  display: none;
}

/* Document upload drop zone */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  cursor: pointer;
  transition: all .2s ease;
  background: var(--card);
}
.drop-zone:hover {
  border-color: var(--accent);
  background: var(--accent-weak);
}
.drop-zone.drag-over {
  border-color: var(--accent);
  background: var(--accent-weak);
  transform: scale(1.01);
}
.drop-zone-text {
  color: var(--muted);
  font-size: 14px;
  pointer-events: none;
}

/* Email import drop zone */
.email-drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 36px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color .2s ease, background .2s ease, transform .2s ease, box-shadow .2s ease;
  background: var(--card);
  margin: 0 0 16px 0;
}
.email-drop-zone:hover {
  border-color: var(--accent);
  background: var(--accent-weak);
}
.email-drop-zone.drag-over {
  border-color: var(--accent);
  background: var(--accent-weak);
  transform: scale(1.02);
  box-shadow: var(--shadow-hover);
}
.email-drop-zone.valid {
  border-color: var(--ok);
  background: var(--ok-weak);
}
.email-drop-zone.invalid {
  border-color: var(--danger);
  background: var(--danger-weak);
  animation: emailDropShake .4s ease;
}
@keyframes emailDropShake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}
.email-drop-icon {
  font-size: 34px;
  display: block;
  margin-bottom: 8px;
  line-height: 1;
}
.email-drop-title {
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 4px;
  font-size: 15px;
}
.email-drop-hint {
  color: var(--muted);
  font-size: 13px;
}
.selected-files-list {
  margin-top: 12px;
}
.selected-files-header {
  font-weight: 600;
  font-size: 13px;
  color: var(--ink);
  margin-bottom: 8px;
}
.selected-files-list ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.selected-files-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
}
.selected-files-list .file-name {
  flex: 1;
  min-width: 0;
  font-size: 13px;
  color: var(--ink);
  word-break: break-all;
}

/* ==================== LAYOUT 30/70: TÓM TẮT | CHI TIẾT ==================== */
.error-tracking-layout {
  display: grid;
  grid-template-columns: 30% 70%;
  gap: 16px;
  align-items: start;
}
@media (max-width: 768px) {
  .error-tracking-layout {
    grid-template-columns: 100%;
  }
}
.error-col-left {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}
.error-col-right {
  min-width: 0;
}
.error-summary-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 8px;
}
.stat-item {
  text-align: center;
  padding: 10px 8px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.stat-value {
  font-size: 20px;
  font-weight: 800;
  line-height: 1;
}
.stat-label {
  font-size: 11px;
  color: var(--muted);
  margin-top: 4px;
  display: block;
}
.error-col-left .card-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.error-col-left .card-title-custom {
  font-size: 14px;
  margin: 0;
}