:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: #1e293b;
  background: #f8fafc;
  --page-bg: #f1f5f9;
  --panel-bg: #ffffff;
  --field-bg: #f8fafc;
  --border: #cbd5e1;
  --border-focus: #0284c7;
  --muted: #64748b;
  --text: #0f172a;
  --text-secondary: #475569;
  --accent: #0284c7;
  --accent-hover: #0369a1;
  --accent-light: #e0f2fe;
  --success: #16a34a;
  --success-hover: #15803d;
  --success-light: #dcfce7;
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --danger-light: #fee2e2;
  --console-bg: #0f172a;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --radius: 10px;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --page-bg: #0b1120;
  --panel-bg: #1e293b;
  --field-bg: #0f172a;
  --border: #334155;
  --border-focus: #38bdf8;
  --muted: #94a3b8;
  --text: #f8fafc;
  --text-secondary: #cbd5e1;
  --accent: #38bdf8;
  --accent-hover: #0284c7;
  --accent-light: rgba(56, 189, 248, 0.15);
  --success: #22c55e;
  --success-hover: #16a34a;
  --success-light: rgba(34, 197, 94, 0.15);
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --danger-light: rgba(239, 68, 68, 0.15);
  --console-bg: #020617;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background: var(--page-bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
}

button, input, select, textarea {
  font: inherit;
}

h1, h2, h3, h4, p {
  margin: 0;
}

/* Lucide Icon Standard */
.lucide-icon {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  flex-shrink: 0;
}

.text-success {
  color: var(--success) !important;
}

/* App Shell Layout */
.app-shell {
  width: min(1440px, calc(100vw - 40px));
  margin: 0 auto;
  padding: 24px 0 40px;
}

/* Header Toolbar */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-icon {
  width: 32px;
  height: 32px;
  color: var(--accent);
}

.brand-copy h1 {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--text);
}

.brand-copy p {
  font-size: 14px;
  color: var(--muted);
  margin-top: 2px;
}

.run-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 18px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--panel-bg);
  color: var(--text);
  cursor: pointer;
  transition: all 160ms ease;
  user-select: none;
}

.btn:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn.primary {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
  box-shadow: 0 2px 4px rgba(2, 132, 199, 0.25);
}

.btn.primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn.primary:disabled {
  opacity: 0.65;
  cursor: wait;
}

.btn.danger {
  background: var(--danger);
  color: #ffffff;
  border-color: var(--danger);
}

.btn.danger:hover {
  background: var(--danger-hover);
}

.btn.danger:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn.small {
  min-height: 34px;
  padding: 6px 12px;
  font-size: 13px;
}

.btn-big {
  width: 100%;
  min-height: 48px;
  font-size: 16px;
  font-weight: 700;
}

.theme-button {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 50%;
}

/* Workspace Layout */
.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(460px, 1fr);
  gap: 24px;
  align-items: start;
}

/* Panels */
.panel {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.panel-header {
  margin-bottom: 20px;
}

.panel-title {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}

.panel-title h2 {
  font-size: 18px;
  font-weight: 700;
}

.panel-title .lucide-icon {
  width: 22px;
  height: 22px;
  color: var(--accent);
}

/* Source Tabs (Lucide Modern Pills) */
.mode-select {
  margin-bottom: 20px;
}

.source-select-label {
  display: none;
}

.source-tabs-container {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 4px;
}

.source-tabs {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
}

.source-tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  min-height: 52px;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--field-bg);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 160ms ease;
  text-align: center;
}

.source-tab strong {
  font-size: 14px;
  font-weight: 700;
}

.source-tab span {
  font-size: 12px;
  opacity: 0.85;
}

.source-tab:hover {
  border-color: var(--accent);
  background: var(--accent-light);
  color: var(--accent);
}

.source-tab.is-active {
  border-color: var(--accent);
  background: var(--accent-light);
  color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

/* Form Sections */
.mode-panel {
  padding-top: 4px;
}

.mode-panel.is-hidden {
  display: none;
}

.mode-header {
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.mode-header h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.mode-header p {
  font-size: 13px;
  color: var(--muted);
  margin-top: 3px;
}

/* Grids */
.grid {
  display: grid;
  gap: 16px;
  margin-bottom: 16px;
}

.grid.two {
  grid-template-columns: 1fr 1fr;
}

.grid.three {
  grid-template-columns: repeat(3, 1fr);
}

.grid.four {
  grid-template-columns: repeat(4, 1fr);
}

/* Inputs & Labels */
label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

input, select, textarea {
  width: 100%;
  min-height: 46px;
  padding: 10px 14px;
  font-size: 15px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--field-bg);
  color: var(--text);
  outline: none;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

input::placeholder, textarea::placeholder {
  color: #94a3b8;
  font-size: 14px;
}

textarea {
  resize: vertical;
}

/* Checkboxes */
.check {
  display: inline-flex;
  flex-direction: row;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  user-select: none;
}

.check input[type="checkbox"] {
  width: 18px;
  height: 18px;
  min-height: 18px;
  margin: 0;
  accent-color: var(--accent);
  cursor: pointer;
}

.all-check {
  justify-content: flex-start;
  align-items: center;
  min-height: 46px;
  padding-top: 24px;
}

.sub-section {
  margin: 14px 0 18px;
}

.sub-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
}

.check-list {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 20px;
}

.options-row {
  display: flex;
  align-items: center;
  gap: 20px;
  padding-top: 24px;
}

.options {
  display: flex;
  gap: 18px;
  margin: 8px 0 16px;
}

.fields-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 16px 0 10px;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1.5fr 100px 100px 80px 70px;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
}

.mini-check {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 6px;
  font-size: 13px;
}

.mini-check input {
  width: 16px;
  height: 16px;
  min-height: 16px;
}

.form-footer-action {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

/* Result Panel */
.result-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 520px;
}

/* Progress Wrap */
.progress-wrap {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.progress-meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.progress-percent {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
}

.progress-count {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
}

.progress-track {
  height: 10px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
}

.progress-bar {
  width: 0%;
  height: 100%;
  background: var(--accent);
  border-radius: inherit;
  transition: width 200ms ease;
}

/* Status Alert */
.status {
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.5;
  background: var(--field-bg);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.status.error {
  background: var(--danger-light);
  border-color: var(--danger);
  color: var(--danger);
  font-weight: 600;
}

/* Action Download Card (Thẻ tải file to rõ ràng) */
.action-download-card {
  padding: 20px;
  border-radius: var(--radius);
  background: #f0fdf4;
  border: 1px solid #86efac;
  display: flex;
  flex-direction: column;
  gap: 16px;
  animation: fadeIn 200ms ease;
}

:root[data-theme="dark"] .action-download-card {
  background: rgba(22, 163, 74, 0.12);
  border-color: rgba(74, 222, 128, 0.3);
}

.action-download-card.is-hidden {
  display: none;
}

.action-download-header {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.action-download-header .lucide-icon {
  width: 28px;
  height: 28px;
  color: #16a34a;
  margin-top: 2px;
}

.action-download-header h4 {
  font-size: 17px;
  font-weight: 700;
  color: #166534;
}

:root[data-theme="dark"] .action-download-header h4 {
  color: #86efac;
}

.action-download-header p {
  font-size: 14px;
  color: #15803d;
  margin-top: 2px;
}

:root[data-theme="dark"] .action-download-header p {
  color: #bbf7d0;
}

.downloads-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn-download-excel {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 12px 22px;
  font-size: 16px;
  font-weight: 700;
  color: #ffffff !important;
  background: #16a34a;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(22, 163, 74, 0.35);
  transition: all 160ms ease;
}

.btn-download-excel:hover {
  background: #15803d;
  transform: translateY(-1px);
}

.btn-download-csv {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 48px;
  padding: 12px 18px;
  font-size: 15px;
  font-weight: 600;
  color: #0f172a !important;
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  text-decoration: none;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all 160ms ease;
}

:root[data-theme="dark"] .btn-download-csv {
  background: #1e293b;
  color: #f8fafc !important;
  border-color: #475569;
}

.btn-download-csv:hover {
  border-color: #94a3b8;
  transform: translateY(-1px);
}

.btn-download-config {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 48px;
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 600;
  color: #64748b;
  background: #ffffff;
  border: 1px dashed #cbd5e1;
  border-radius: 8px;
  text-decoration: none;
}

:root[data-theme="dark"] .btn-download-config {
  background: #1e293b;
  color: #94a3b8;
  border-color: #475569;
}

.btn-download-config:hover {
  color: #0f172a;
  border-color: #64748b;
}

/* Data Table Preview */
.table-preview-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--panel-bg);
}

.table-preview-card.is-hidden {
  display: none;
}

.preview-card-header {
  padding: 12px 16px;
  background: var(--field-bg);
  border-bottom: 1px solid var(--border);
}

.preview-card-header h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
}

.table-scroll-wrap {
  max-height: 380px;
  overflow: auto;
}

.preview-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  text-align: left;
}

.preview-table th {
  position: sticky;
  top: 0;
  background: var(--field-bg);
  padding: 10px 14px;
  font-weight: 700;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.preview-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.preview-table tr:hover td {
  background: var(--field-bg);
  color: var(--text);
}

/* JSON Details Accordion */
.json-accordion {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--field-bg);
  overflow: hidden;
}

.json-accordion summary {
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
}

.json-accordion summary:hover {
  color: var(--text);
}

pre {
  margin: 0;
  padding: 14px;
  max-height: 280px;
  overflow: auto;
  background: var(--console-bg);
  color: #f1f5f9;
  font: 12px/1.5 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  white-space: pre-wrap;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   RESPONSIVE DESIGN (TABLET & MOBILE)
   ========================================================================== */
@media (max-width: 1024px) {
  .workspace {
    grid-template-columns: 1fr;
  }
  .brand-copy p {
    white-space: normal;
  }
}

@media (max-width: 768px) {
  .app-shell {
    width: calc(100% - 24px);
    padding: 16px 0 32px;
  }

  .toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
  }

  .brand-copy h1 {
    font-size: 20px;
  }

  .brand-copy p {
    font-size: 13px;
  }

  .run-actions {
    display: grid;
    grid-template-columns: 1fr 1fr 44px;
    width: 100%;
  }

  .panel {
    padding: 18px 14px;
  }

  /* Cuộn ngang mượt mà cho source tabs trên điện thoại */
  .source-tabs-container {
    margin: 0 -14px;
    padding: 0 14px 8px;
  }

  .source-tabs {
    display: flex;
    gap: 8px;
    width: max-content;
  }

  .source-tab {
    min-width: 90px;
    min-height: 48px;
    padding: 6px 12px;
  }

  .source-tab strong {
    font-size: 13px;
  }

  .source-tab span {
    font-size: 11px;
  }

  .grid.two, .grid.three, .grid.four {
    grid-template-columns: 1fr;
  }

  .all-check {
    padding-top: 0;
    min-height: auto;
  }

  .options-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding-top: 0;
  }

  .field-row {
    grid-template-columns: 1fr;
  }

  .downloads-actions {
    flex-direction: column;
  }

  .btn-download-excel, .btn-download-csv {
    width: 100%;
    justify-content: center;
  }
}