:root {
  color-scheme: light;
  --bg: #f4f6f8;
  --surface: #ffffff;
  --surface-soft: #eef3f6;
  --text: #1d2329;
  --muted: #64717d;
  --line: #d9e0e6;
  --primary: #0f766e;
  --primary-strong: #0b5f59;
  --accent: #b45309;
  --danger: #b42318;
  --shadow: 0 12px 28px rgba(16, 24, 40, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
}

button,
input {
  font: inherit;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 20px 28px;
  background: #16202a;
  color: #fff;
  border-bottom: 4px solid var(--primary);
}

.app-header h1 {
  margin: 0;
  font-size: 24px;
  line-height: 1.2;
  letter-spacing: 0;
}

.app-header p {
  margin: 6px 0 0;
  color: #c9d4df;
  font-size: 14px;
}

.language-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-end;
}

.language-button {
  min-height: 28px;
  padding: 5px 10px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  color: #e8eef4;
  font-size: 13px;
  cursor: pointer;
}

.language-button.active {
  background: #fff;
  color: #16202a;
  border-color: #fff;
}

.app-shell {
  width: min(1440px, 100%);
  margin: 0 auto;
  padding: 18px 20px 32px;
}

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.tab-button,
.primary-button,
.ghost-button {
  min-height: 38px;
  border-radius: 6px;
  border: 1px solid transparent;
  padding: 8px 13px;
  cursor: pointer;
}

.tab-button {
  background: var(--surface);
  border-color: var(--line);
  color: var(--muted);
}

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

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

.primary-button:hover {
  background: var(--primary-strong);
}

.ghost-button {
  background: #fff;
  color: var(--text);
  border-color: var(--line);
}

.compact {
  min-height: 34px;
  padding: 6px 11px;
}

.icon-button {
  width: 36px;
  min-width: 36px;
  padding: 0;
  color: var(--danger);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.workspace-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.tool-panel,
.guide-panel,
.results-panel,
.line-table {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.tool-panel,
.guide-panel {
  padding: 14px;
}

.panel-heading,
.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.panel-heading h2,
.results-header h2 {
  margin: 0;
  font-size: 16px;
  line-height: 1.25;
  letter-spacing: 0;
}

label {
  display: grid;
  gap: 6px;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 13px;
}

.field-block {
  display: grid;
  gap: 6px;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 13px;
}

.settings-row > label,
.settings-row > .field-block {
  align-content: start;
}

.field-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.inline-check {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
  cursor: pointer;
}

label > span[data-tooltip],
.field-block > span[data-tooltip],
.field-label-row > span[data-tooltip],
.inline-check span[data-tooltip],
.line-header span[data-tooltip] {
  width: fit-content;
  cursor: pointer;
  text-decoration: underline dotted rgba(100, 113, 125, 0.65);
  text-underline-offset: 3px;
}

input {
  width: 100%;
  min-width: 0;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 10px;
  background: #fff;
  color: var(--text);
}

input:focus {
  outline: 2px solid rgba(15, 118, 110, 0.22);
  border-color: var(--primary);
}

input:disabled {
  background: var(--surface-soft);
  color: #87929d;
  cursor: not-allowed;
}

.is-disabled {
  color: #87929d;
}

.is-disabled span,
.is-disabled input {
  opacity: 0.78;
}

.inline-check input[type="checkbox"] {
  width: 16px;
  min-width: 16px;
  height: 16px;
  padding: 0;
}

.line-current,
.line-may-include {
  display: grid;
  gap: 5px;
}

.line-current {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
}

.line-current .inline-check {
  justify-self: end;
}

.line-may-include {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
}

.line-may-include .inline-check {
  justify-self: end;
}

.actions {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 4px;
}

.results-panel {
  margin-top: 14px;
  padding: 14px;
}

.results-header span {
  color: var(--muted);
  font-size: 13px;
}

.result-list {
  display: grid;
  gap: 12px;
}

.result-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
}

.result-card > header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 12px;
  background: var(--surface-soft);
  border-bottom: 1px solid var(--line);
}

.result-card h3 {
  margin: 0;
  font-size: 15px;
  letter-spacing: 0;
}

.result-card small {
  color: var(--muted);
}

.plan-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
}

.plan-row {
  display: contents;
}

.plan-cell {
  min-height: 56px;
  padding: 10px;
  background: #fff;
}

.plan-cell strong {
  display: block;
  margin-bottom: 3px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.plan-cell span {
  display: block;
  overflow-wrap: anywhere;
  font-size: 14px;
}

.plan-cell.line-detail span {
  white-space: pre-line;
}

.plan-cell.accent span {
  color: var(--accent);
  font-weight: 700;
}

.candidate-table {
  width: 100%;
  border-collapse: collapse;
}

.candidate-table th,
.candidate-table td {
  padding: 9px 10px;
  border-top: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  font-size: 13px;
}

.candidate-table th {
  color: var(--muted);
  font-weight: 600;
  background: #fbfcfd;
}

.candidate-table td {
  overflow-wrap: anywhere;
}

.empty-state,
.error-state {
  min-height: 80px;
  display: grid;
  place-items: center;
  border: 1px dashed var(--line);
  border-radius: 8px;
  color: var(--muted);
  background: #fff;
}

.error-state {
  color: var(--danger);
  border-color: rgba(180, 35, 24, 0.35);
  background: #fff7f6;
}

.multi-settings {
  margin-bottom: 12px;
}

.settings-row {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px;
}

.settings-row > label,
.settings-row > .field-block {
  min-height: 64px;
  margin-bottom: 0;
}

.settings-row > .field-block {
  grid-template-rows: minmax(20px, auto) 38px;
}

.settings-row > .total-may-include {
  grid-template-rows: 16px auto;
  min-height: 88px;
}

.total-may-input {
  display: grid;
  grid-template-rows: 38px auto;
  gap: 4px;
}

.total-may-input input[name="multiARequireAny"] {
  height: 100%;
}

.total-may-input .inline-check {
  justify-self: end;
}

.line-table {
  overflow-x: auto;
}

.line-header,
.line-row {
  display: grid;
  grid-template-columns: 100px 205px 130px 110px minmax(145px, 0.85fr) minmax(220px, 1.2fr) minmax(130px, 0.75fr) 44px;
  min-width: 1140px;
  gap: 8px;
  align-items: center;
  padding: 10px;
}

.line-header {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  background: var(--surface-soft);
  border-bottom: 1px solid var(--line);
}

.line-row {
  border-bottom: 1px solid var(--line);
}

.line-row:last-child {
  border-bottom: 0;
}

.line-row input {
  height: 36px;
}

.multi-actions {
  margin: 12px 0 0;
}

.guide-panel {
  max-width: 900px;
}

.guide-content {
  display: grid;
  gap: 12px;
  color: var(--text);
}

.guide-content p {
  margin: 0;
  line-height: 1.7;
  color: #33404c;
}

.floating-tooltip {
  position: fixed;
  z-index: 100;
  max-width: min(320px, calc(100vw - 24px));
  padding: 9px 10px;
  border-radius: 8px;
  background: #111827;
  color: #fff;
  box-shadow: var(--shadow);
  font-size: 12px;
  line-height: 1.5;
  pointer-events: none;
}

.floating-tooltip[hidden] {
  display: none;
}

@media (max-width: 1120px) {
  .workspace-grid,
  .settings-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .app-header {
    align-items: flex-start;
    flex-direction: column;
    padding: 18px 16px;
  }

  .language-switch {
    justify-content: flex-start;
  }

  .app-shell {
    padding: 14px 12px 24px;
  }

  .workspace-grid,
  .settings-row {
    grid-template-columns: 1fr;
  }

  .tabs {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .candidate-table {
    min-width: 760px;
  }

  .result-card {
    overflow-x: auto;
  }
}