:root {
  --ink: #172334;
  --muted: #607089;
  --page: #eef4f9;
  --surface: #ffffff;
  --line: #dbe5ee;
  --line-soft: #edf2f7;
  --nav: #234a78;
  --nav-strong: #19395f;
  --blue: #1f79d1;
  --green: #0aa778;
  --green-soft: #dff8ef;
  --red: #cf3e3e;
  --red-soft: #fde8e8;
  --amber: #b7791f;
  --amber-soft: #fff4d6;
  --purple: #6657c8;
  --shadow: 0 12px 26px rgba(36, 67, 96, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--page);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  letter-spacing: 0;
}

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

button {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 20;
  color: #fff;
  background: var(--nav);
  box-shadow: 0 8px 22px rgba(23, 48, 82, 0.24);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: 1500px;
  min-height: 72px;
  margin: 0 auto;
  padding: 0 24px;
}

.brand {
  display: flex;
  align-items: center;
  min-width: 0;
  gap: 14px;
}

.brand-mark {
  display: grid;
  flex: 0 0 38px;
  width: 38px;
  height: 38px;
  place-items: center;
  color: #fff;
  font-weight: 800;
  background: linear-gradient(135deg, #0aa778, #1f79d1);
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: 8px;
}

.brand-title {
  font-size: 20px;
  font-weight: 760;
  line-height: 1.2;
}

.brand-subtitle {
  max-width: 78vw;
  margin-top: 5px;
  color: rgba(255, 255, 255, 0.72);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.header-actions {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 10px;
}

.tabs {
  display: flex;
  gap: 8px;
  max-width: 1500px;
  margin: 0 auto;
  padding: 0 24px 12px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.tab {
  position: relative;
  flex: 0 0 auto;
  min-height: 38px;
  max-width: 220px;
  padding: 0 16px;
  color: rgba(255, 255, 255, 0.82);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
}

.tab.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.34);
}

.tab.has-error::after {
  position: absolute;
  top: 7px;
  right: 8px;
  width: 7px;
  height: 7px;
  content: "";
  background: #ffcf66;
  border-radius: 999px;
}

.app-main {
  width: min(1500px, 100%);
  margin: 0 auto;
  padding: 28px 24px 48px;
}

.page {
  display: none;
}

.page.active {
  display: block;
}

.page-title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 22px;
}

h1 {
  margin: 0;
  font-size: 26px;
  line-height: 1.25;
}

.muted {
  margin: 8px 0 0;
  color: var(--muted);
}

.config-grid {
  display: grid;
  grid-template-columns: minmax(320px, 0.88fr) minmax(320px, 1.12fr);
  gap: 18px;
}

.config-form,
.upload-form,
.empty-state,
.table-wrap,
.issue-panel,
.sheet-toolbar,
.sheet-section,
.json-panel,
.json-import-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.config-form,
.upload-form {
  padding: 24px;
}

.json-import-panel {
  margin-top: 18px;
  padding: 18px 24px 22px;
}

.json-import-panel summary {
  color: #26384e;
  font-weight: 780;
  cursor: pointer;
}

.json-import-panel form {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.json-import-panel textarea {
  min-height: 220px;
  font-family: "SFMono-Regular", Consolas, monospace;
}

.field-block {
  margin-bottom: 18px;
}

.field-label {
  display: block;
  margin-bottom: 9px;
  color: #27364a;
  font-weight: 720;
}

.segmented {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.segment {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 12px;
  color: #36506d;
  font-weight: 700;
  text-align: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fbfe;
  transition: border-color 0.16s ease, background 0.16s ease, color 0.16s ease;
}

.segment.active {
  color: #0b604d;
  background: var(--green-soft);
  border-color: rgba(10, 167, 120, 0.52);
}

.segment input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.field-hint {
  margin-top: 8px;
  color: var(--muted);
  font-family: "SFMono-Regular", Consolas, monospace;
  word-break: break-all;
}

textarea {
  width: 100%;
  min-height: 190px;
  resize: vertical;
  padding: 13px 14px;
  color: #1e2d40;
  background: #fbfdff;
  border: 1px solid var(--line);
  border-radius: 8px;
  outline: none;
}

textarea:focus,
input[type="search"]:focus,
select:focus {
  border-color: rgba(31, 121, 209, 0.72);
  box-shadow: 0 0 0 3px rgba(31, 121, 209, 0.12);
}

.upload-form {
  display: grid;
  align-content: start;
  gap: 18px;
}

.upload-box {
  display: grid;
  min-height: 282px;
  place-items: center;
  padding: 30px;
  text-align: center;
  background: linear-gradient(180deg, #f9fcff, #f2f7fb);
  border: 1px dashed #9ab2c8;
  border-radius: 8px;
}

.upload-box.dragging {
  background: #e9f6ff;
  border-color: var(--blue);
}

.upload-box input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.upload-icon {
  display: grid;
  width: 52px;
  height: 52px;
  margin-bottom: 16px;
  place-items: center;
  color: #fff;
  font-size: 26px;
  font-weight: 900;
  background: var(--green);
  border-radius: 8px;
}

.upload-title {
  display: block;
  max-width: 100%;
  color: #1f3044;
  font-size: 20px;
  font-weight: 760;
  overflow-wrap: anywhere;
}

.upload-meta {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-family: "SFMono-Regular", Consolas, monospace;
  overflow-wrap: anywhere;
}

.button-row,
.toolbar,
.sheet-toolbar-main,
.sheet-toolbar-extra {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.primary-button,
.secondary-button,
.ghost-button,
.small-button {
  min-height: 38px;
  padding: 0 15px;
  font-weight: 740;
  border-radius: 8px;
  border: 1px solid transparent;
}

.primary-button {
  color: #fff;
  background: var(--green);
  border-color: var(--green);
}

.primary-button:hover:not(:disabled) {
  background: #078d67;
}

.secondary-button {
  color: #21415f;
  background: #fff;
  border-color: var(--line);
}

.secondary-button:hover:not(:disabled),
.small-button:hover:not(:disabled) {
  border-color: #9db3ca;
  background: #f7fbff;
}

.ghost-button {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
}

.small-button {
  min-height: 30px;
  padding: 0 10px;
  color: #2f4864;
  background: #fff;
  border-color: var(--line);
}

.small-button.active {
  color: #0b604d;
  background: var(--green-soft);
  border-color: rgba(10, 167, 120, 0.42);
}

.inline-status {
  color: var(--muted);
}

.request-chip,
.status-chip,
.target-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 26px;
  padding: 0 10px;
  font-size: 12px;
  font-weight: 760;
  white-space: nowrap;
  border-radius: 999px;
}

.request-chip {
  color: #fff;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.request-chip.running {
  color: #112f51;
  background: #d4ecff;
}

.request-chip.success {
  color: #064b38;
  background: #bff2df;
}

.request-chip.error {
  color: #6c1717;
  background: #ffd6d6;
}

.empty-state {
  padding: 46px 28px;
  text-align: center;
}

.empty-title {
  font-size: 20px;
  font-weight: 780;
}

.empty-text {
  max-width: 620px;
  margin: 10px auto 0;
  color: var(--muted);
  line-height: 1.65;
}

.hidden {
  display: none !important;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(180px, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.metric-card {
  padding: 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.metric-label {
  color: var(--muted);
  font-weight: 720;
}

.metric-value {
  margin-top: 8px;
  font-size: 28px;
  font-weight: 820;
  line-height: 1.1;
}

.metric-sub {
  margin-top: 8px;
  color: var(--muted);
}

.summary-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 18px;
  align-items: start;
}

.table-wrap {
  overflow: auto;
}

.data-table {
  width: 100%;
  min-width: 980px;
  border-collapse: separate;
  border-spacing: 0;
}

.data-table th,
.data-table td {
  padding: 13px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line-soft);
  vertical-align: top;
}

.data-table th {
  position: sticky;
  top: 0;
  z-index: 2;
  color: #41536a;
  font-size: 12px;
  font-weight: 800;
  background: #f8fbfe;
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

.data-table tbody tr.clickable:hover {
  background: #f7fbff;
}

.number-cell {
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.mono-cell {
  font-family: "SFMono-Regular", Consolas, monospace;
  overflow-wrap: anywhere;
}

.sheet-link {
  padding: 0;
  color: var(--blue);
  font-weight: 760;
  text-align: left;
  background: transparent;
  border: none;
}

.status-chip.success {
  color: #086147;
  background: var(--green-soft);
}

.status-chip.warning {
  color: #744c00;
  background: var(--amber-soft);
}

.status-chip.error {
  color: #8c1d1d;
  background: var(--red-soft);
}

.issue-panel {
  padding: 18px;
}

.issue-panel h2,
.sheet-section h2,
.json-panel h2,
.missing-target-block h2 {
  margin: 0 0 14px;
  font-size: 16px;
}

.issue-gap {
  margin-top: 18px !important;
}

.issue-list,
.header-list,
.target-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.issue-list li,
.header-list li,
.target-list li {
  padding: 11px 12px;
  line-height: 1.45;
  background: #f8fbfe;
  border: 1px solid var(--line-soft);
  border-radius: 8px;
}

.sheet-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.sheet-head h1 {
  word-break: break-word;
}

.sheet-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.target-chip {
  color: #334963;
  background: #edf4fb;
  border: 1px solid var(--line);
}

.sheet-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 14px;
  margin-bottom: 16px;
}

.sheet-toolbar input[type="search"],
.sheet-toolbar select {
  min-height: 38px;
  padding: 0 12px;
  color: #1f3044;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  outline: none;
}

.sheet-toolbar input[type="search"] {
  width: min(360px, 100%);
}

.sheet-section {
  padding: 18px;
  margin-bottom: 16px;
}

.header-groups {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.header-group-title {
  margin-bottom: 8px;
  color: var(--muted);
  font-weight: 780;
}

.row-detail {
  padding: 0 !important;
  background: #fbfdff;
}

.detail-box {
  padding: 16px;
  border-top: 1px solid var(--line-soft);
}

.detail-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.detail-title {
  font-weight: 800;
}

.detail-subtitle {
  margin-top: 5px;
  color: var(--muted);
}

.field-mode-row {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 8px;
}

.field-count-button {
  min-width: 34px;
  min-height: 28px;
  padding: 0 8px;
  font-weight: 820;
  color: #25425f;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
}

.field-count-button:hover,
.field-count-button:focus-visible {
  background: #eef6ff;
  border-color: #bfd3e7;
  outline: none;
}

.field-count-button.red {
  color: #8c1d1d;
}

.field-count-button.green {
  color: #086147;
}

.field-mode-button {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 12px;
  color: #354b65;
  font-weight: 760;
  background: #f1f6fb;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.field-mode-button.red {
  color: #8c1d1d;
  background: var(--red-soft);
  border-color: #f4caca;
}

.field-mode-button.green {
  color: #086147;
  background: var(--green-soft);
  border-color: #bdebdc;
}

.field-mode-button.active {
  color: #fff;
  background: var(--nav);
  border-color: var(--nav);
  box-shadow: 0 5px 12px rgba(35, 74, 120, 0.2);
}

.missing-target-block {
  padding: 14px;
  margin-bottom: 14px;
  background: #fffafa;
  border: 1px solid #f3d0d0;
  border-radius: 8px;
}

.field-table {
  width: 100%;
  min-width: 900px;
  border-collapse: collapse;
}

.field-table th,
.field-table td {
  padding: 10px 12px;
  border: 1px solid var(--line-soft);
  vertical-align: top;
}

.field-table th {
  color: #4b5e74;
  font-size: 12px;
  background: #f1f6fb;
}

.field-table .value {
  max-width: 340px;
  overflow-wrap: anywhere;
}

.value.diff {
  color: #8c1d1d;
  background: #fff8f8;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 10px;
  color: #354b65;
  background: #f1f6fb;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.pill.red {
  color: #8c1d1d;
  background: var(--red-soft);
  border-color: #f4caca;
}

.pill.green {
  color: #086147;
  background: var(--green-soft);
  border-color: #bdebdc;
}

.json-panel {
  padding: 18px;
}

.json-panel pre {
  max-height: 520px;
  margin: 0;
  padding: 14px;
  color: #142338;
  overflow: auto;
  background: #f7fafc;
  border: 1px solid var(--line-soft);
  border-radius: 8px;
}

.toast {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 40;
  max-width: min(420px, calc(100vw - 44px));
  padding: 14px 16px;
  color: #fff;
  background: rgba(23, 35, 52, 0.94);
  border-radius: 8px;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1100px) {
  .config-grid,
  .summary-layout,
  .header-groups {
    grid-template-columns: 1fr;
  }

  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .header-inner,
  .page-title-row,
  .sheet-head,
  .sheet-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .header-actions {
    justify-content: space-between;
  }

  .app-main,
  .header-inner,
  .tabs {
    padding-right: 14px;
    padding-left: 14px;
  }

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

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

  h1 {
    font-size: 22px;
  }
}