:root {
  color-scheme: light;
  --ink: #111827;
  --muted: #64748b;
  --line: #dbe3ed;
  --line-strong: #cbd5e1;
  --panel: #ffffff;
  --surface: #f8fafc;
  --surface-blue: #f8fbff;
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --accent-light: #eff6ff;
  --success: #047857;
  --success-light: #ecfdf5;
  --warning: #a16207;
  --warning-light: #fffbeb;
  --danger: #b91c1c;
  --danger-light: #fef2f2;
  --shadow: 0 18px 50px rgba(15, 23, 42, 0.09);
  --serif: "Liberation Serif", "Times New Roman", Times, serif;
  --sans: Arial, Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  background:
    linear-gradient(
      145deg,
      #f8fafc 0%,
      #eef4fb 55%,
      #f8fafc 100%
    );
  color: var(--ink);
  font-family: var(--serif);
}

button,
input,
select {
  font: inherit;
}

button,
input,
select,
.drop-zone,
.strategy-option {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
.drop-zone:focus-visible,
.strategy-option:focus-within,
.result-tab:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.24);
  outline-offset: 2px;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

[hidden] {
  display: none !important;
}

.application {
  width: min(1600px, calc(100% - 30px));
  min-height: calc(100vh - 30px);
  margin: 15px auto;
}

.app-header,
.step-navigation,
.main-panel,
.information-panel {
  border: 1px solid rgba(203, 213, 225, 0.9);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow);
}

.app-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 28px;
  padding: 25px 29px;
  border-radius: 18px 18px 0 0;
  border-bottom: 0;
  background:
    linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.98),
      rgba(248, 250, 252, 0.96)
    );
}

.eyebrow,
.section-kicker {
  margin: 0 0 6px;
  color: var(--accent);
  font-family: var(--sans);
  font-size: 0.69rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.app-header h1,
.panel-heading h2,
.results-heading h2,
.information-panel h2,
.information-panel h3,
.warnings-panel h3 {
  margin: 0;
  color: var(--ink);
  font-weight: 700;
}

.app-header h1 {
  font-size: clamp(1.65rem, 2.3vw, 2.25rem);
  line-height: 1.08;
}

.app-subtitle {
  max-width: 780px;
  margin: 9px 0 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.45;
}

.privacy-badge,
.status-pill {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.76rem;
  font-weight: 700;
}

.privacy-badge {
  margin-top: 2px;
  padding: 8px 11px;
}

.privacy-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
}

.step-navigation {
  padding: 0 28px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  box-shadow: none;
}

.step-navigation ol {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  max-width: 840px;
  margin: 0 auto;
  padding: 0;
  list-style: none;
}

.step-item {
  position: relative;
  display: flex;
  min-height: 68px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  color: #94a3b8;
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 700;
}

.step-item:not(:last-child)::after {
  position: absolute;
  top: 50%;
  right: -22%;
  width: 44%;
  height: 1px;
  background: var(--line);
  content: "";
}

.step-number {
  display: inline-grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: var(--surface);
  font-size: 0.76rem;
}

.step-item.is-active {
  color: var(--accent);
}

.step-item.is-active .step-number {
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 340px);
  gap: 18px;
  margin-top: 18px;
}

.main-panel,
.information-panel {
  border-radius: 18px;
}

.main-panel {
  min-width: 0;
  padding: 26px 28px 29px;
}

.panel-heading,
.results-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.panel-heading {
  margin-bottom: 21px;
}

.panel-heading h2,
.results-heading h2 {
  font-size: 1.35rem;
}

.file-limit {
  flex: 0 0 auto;
  margin: 4px 0 0;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.74rem;
  font-weight: 700;
}

.drop-zone {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
  min-height: 138px;
  padding: 24px;
  border: 2px dashed #bfcee0;
  border-radius: 15px;
  background: var(--surface);
  cursor: pointer;
  transition:
    border-color 0.15s,
    background 0.15s,
    transform 0.15s;
}

.drop-zone:hover,
.drop-zone.is-dragging {
  border-color: var(--accent);
  background: var(--accent-light);
}

.drop-zone.is-dragging {
  transform: translateY(-1px);
}

.upload-icon {
  display: grid;
  width: 59px;
  height: 59px;
  place-items: center;
  border: 1px solid #bfdbfe;
  border-radius: 14px;
  background: #ffffff;
  color: var(--accent);
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.drop-zone-text {
  display: grid;
  gap: 5px;
}

.drop-zone-text strong {
  color: var(--ink);
  font-size: 1.04rem;
}

.drop-zone-text span {
  color: var(--muted);
  font-size: 0.9rem;
}

.field-help {
  margin: 9px 0 0;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.8rem;
  line-height: 1.42;
}

.control-button {
  min-height: 42px;
  padding: 9px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: #ffffff;
  color: var(--ink);
  cursor: pointer;
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 700;
  transition:
    border-color 0.14s,
    background 0.14s,
    color 0.14s,
    transform 0.14s;
}

.control-button:hover:not(:disabled) {
  border-color: #94a3b8;
  background: var(--surface);
  transform: translateY(-1px);
}

.control-button-primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
}

.control-button-primary:hover:not(:disabled) {
  border-color: var(--accent-dark);
  background: var(--accent-dark);
}

.control-button-secondary {
  min-width: 112px;
}

.selected-file {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 15px;
  padding: 13px 15px;
  border: 1px solid #bfdbfe;
  border-radius: 11px;
  background: var(--surface-blue);
}

.selected-file > div {
  display: grid;
  min-width: 0;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 9px;
}

.selected-file-label,
#selected-file-size {
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.76rem;
}

#selected-file-name {
  overflow: hidden;
  font-family: var(--sans);
  font-size: 0.84rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.text-button {
  padding: 5px;
  border: 0;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  font-family: var(--sans);
  font-size: 0.76rem;
  font-weight: 700;
}

.text-button:hover {
  color: var(--accent-dark);
  text-decoration: underline;
}

.strategy-fieldset {
  display: grid;
  gap: 9px;
  margin: 22px 0 0;
  padding: 0;
  border: 0;
}

.strategy-fieldset legend {
  margin-bottom: 2px;
  padding: 0;
  color: var(--ink);
  font-size: 1rem;
  font-weight: 700;
}

.strategy-fieldset > .field-help {
  margin: 0 0 3px;
}

.strategy-option {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: flex-start;
  gap: 11px;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #ffffff;
  cursor: pointer;
  transition:
    border-color 0.14s,
    background 0.14s;
}

.strategy-option:hover,
.strategy-option:has(input:checked) {
  border-color: #93c5fd;
  background: var(--surface-blue);
}

.strategy-option input {
  width: 17px;
  height: 17px;
  margin: 2px 0 0;
  accent-color: var(--accent);
  cursor: pointer;
}

.strategy-option span {
  display: grid;
  gap: 4px;
}

.strategy-option strong {
  font-size: 0.9rem;
}

.strategy-option small {
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.78rem;
  line-height: 1.4;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 21px;
}

.form-actions .control-button {
  min-width: 158px;
}

.status-message {
  margin-top: 19px;
  padding: 13px 15px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--surface);
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.84rem;
  line-height: 1.4;
}

.status-message.is-loading {
  border-color: #bfdbfe;
  background: var(--accent-light);
  color: var(--accent-dark);
}

.status-message.is-success {
  border-color: #a7f3d0;
  background: var(--success-light);
  color: var(--success);
}

.status-message.is-error {
  border-color: #fecaca;
  background: var(--danger-light);
  color: var(--danger);
}

.results-section {
  margin-top: 27px;
  padding-top: 25px;
  border-top: 1px solid var(--line);
}

.status-pill {
  padding: 7px 11px;
  border-color: #a7f3d0;
  background: var(--success-light);
  color: var(--success);
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.summary-card {
  min-width: 0;
  padding: 14px 15px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
}

.summary-card span {
  display: block;
  min-height: 30px;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1.25;
}

.summary-card strong {
  display: block;
  margin-top: 6px;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.38rem;
}

.warnings-panel {
  margin-top: 15px;
  padding: 15px 17px;
  border: 1px solid #fde68a;
  border-radius: 12px;
  background: var(--warning-light);
}

.warnings-panel h3 {
  color: var(--warning);
  font-family: var(--sans);
  font-size: 0.88rem;
}

.warnings-panel ul {
  margin: 8px 0 0;
  padding-left: 19px;
  color: #854d0e;
  font-family: var(--sans);
  font-size: 0.8rem;
  line-height: 1.45;
}

.warnings-panel li + li {
  margin-top: 4px;
}

.result-tabs {
  display: flex;
  gap: 5px;
  margin-top: 20px;
  border-bottom: 1px solid var(--line);
}

.result-tab {
  min-height: 40px;
  padding: 8px 13px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 700;
}

.result-tab:hover {
  color: var(--accent);
}

.result-tab.is-active {
  border-bottom-color: var(--accent);
  color: var(--accent);
}

.tab-panel {
  padding-top: 13px;
}

.table-wrapper {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #ffffff;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--sans);
  font-size: 0.78rem;
}

th,
td {
  padding: 10px 11px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
  white-space: nowrap;
}

th {
  background: var(--surface);
  color: var(--muted);
  font-size: 0.7rem;
  letter-spacing: 0.02em;
}

tbody tr:last-child td {
  border-bottom: 0;
}

tbody tr:hover {
  background: var(--surface-blue);
}

.column-name {
  color: var(--ink);
  font-weight: 700;
}

.role-badge {
  display: inline-flex;
  padding: 4px 7px;
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 700;
}

.role-badge.is-numeric {
  background: var(--accent-light);
  color: var(--accent-dark);
}

.role-badge.is-excluded {
  background: #f1f5f9;
  color: var(--muted);
}

.information-panel {
  align-self: start;
  overflow: hidden;
}

.information-section {
  padding: 21px;
}

.information-section + .information-section {
  border-top: 1px solid var(--line);
}

.information-section h2 {
  font-size: 1.12rem;
}

.information-section h3 {
  font-size: 1rem;
}

.information-section p {
  margin: 9px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.48;
}

.rule-list {
  margin: 11px 0 0;
  padding-left: 18px;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.79rem;
  line-height: 1.46;
}

.rule-list li + li {
  margin-top: 6px;
}

.notice-section {
  background: var(--surface-blue);
}

#continue-button {
  width: 100%;
  margin-top: 15px;
}

.app-footer {
  padding: 17px 20px;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.72rem;
  text-align: center;
}

.app-footer p {
  margin: 0;
}

.noscript-message {
  margin: 20px;
  padding: 15px;
  border: 1px solid #fecaca;
  border-radius: 10px;
  background: var(--danger-light);
  color: var(--danger);
  font-family: var(--sans);
}

@media (max-width: 1050px) {
  .application {
    width: calc(100% - 20px);
    margin: 10px auto;
  }

  .workspace {
    grid-template-columns: minmax(0, 1fr) minmax(250px, 290px);
    gap: 12px;
    margin-top: 12px;
  }

  .main-panel {
    padding: 22px;
  }

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

  .information-section {
    padding: 18px;
  }
}

@media (max-width: 768px) {
  body {
    background: #f1f5f9;
  }

  .application {
    width: 100%;
    min-height: 100vh;
    margin: 0;
  }

  .app-header {
    align-items: center;
    padding:
      calc(17px + env(safe-area-inset-top))
      15px
      16px;
    border: 0;
    border-radius: 0;
    box-shadow: none;
  }

  .app-header h1 {
    font-size: 1.42rem;
  }

  .app-subtitle {
    font-size: 0.88rem;
  }

  .privacy-badge {
    padding: 6px 8px;
    font-size: 0.66rem;
  }

  .step-navigation {
    padding: 0 8px;
    border-right: 0;
    border-left: 0;
  }

  .step-item {
    min-height: 56px;
    gap: 5px;
    font-size: 0.68rem;
  }

  .step-number {
    width: 24px;
    height: 24px;
    font-size: 0.68rem;
  }

  .step-item:not(:last-child)::after {
    display: none;
  }

  .workspace {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin-top: 0;
  }

  .main-panel,
  .information-panel {
    border: 0;
    border-radius: 0;
    box-shadow: none;
  }

  .main-panel {
    padding: 20px 15px;
  }

  .information-panel {
    border-top: 1px solid var(--line);
  }

  .drop-zone {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 13px;
    min-height: 128px;
    padding: 18px;
  }

  .drop-zone .control-button {
    grid-column: 1 / -1;
    width: 100%;
  }

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

  .selected-file > div {
    grid-template-columns: 1fr;
    gap: 3px;
  }

  .information-section {
    padding: 18px 15px;
  }

  .app-footer {
    display: none;
  }
}

@media (max-width: 480px) {
  .app-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 11px;
  }

  .app-subtitle {
    display: none;
  }

  .privacy-badge {
    margin: 0;
  }

  .step-label {
    display: none;
  }

  .step-item {
    min-height: 49px;
  }

  .panel-heading,
  .results-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .file-limit {
    margin: 0;
  }

  .drop-zone {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .upload-icon {
    margin: 0 auto;
  }

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

  .summary-card {
    padding: 12px;
  }

  .summary-card span {
    min-height: 32px;
  }

  .summary-card strong {
    font-size: 1.17rem;
  }

  .selected-file {
    align-items: flex-start;
  }

  .form-actions .control-button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Configuration and generation results */

.generation-form {
  margin-top: 20px;
}

.configuration-fieldset {
  margin: 0;
  padding: 17px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
}

.configuration-fieldset legend {
  padding: 0 7px;
  color: var(--ink);
  font-size: 1rem;
  font-weight: 700;
}

.fieldset-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 13px;
}

.fieldset-heading .field-help {
  margin: 0;
}

.selection-actions {
  display: flex;
  flex: 0 0 auto;
  gap: 8px;
}

.column-options {
  display: grid;
  grid-template-columns: repeat(
    auto-fit,
    minmax(190px, 1fr)
  );
  gap: 8px;
}

.column-option {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 9px;
  min-height: 42px;
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #ffffff;
  cursor: pointer;
  transition:
    border-color 0.14s,
    background 0.14s,
    transform 0.14s;
}

.column-option:hover {
  border-color: #93c5fd;
  background: var(--surface-blue);
  transform: translateY(-1px);
}

.column-option:has(input:checked) {
  border-color: #93c5fd;
  background: var(--accent-light);
}

.column-option:has(input:disabled) {
  cursor: not-allowed;
  opacity: 0.58;
  transform: none;
}

.column-option input {
  width: 17px;
  height: 17px;
  margin: 0;
  accent-color: var(--accent);
  cursor: pointer;
}

.column-option input:disabled {
  cursor: not-allowed;
}

.column-option-text {
  display: grid;
  min-width: 0;
  gap: 2px;
}

.column-option-name {
  overflow: hidden;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 0.82rem;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.column-option-detail {
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.7rem;
}

.configuration-grid {
  display: grid;
  grid-template-columns: repeat(
    2,
    minmax(0, 1fr)
  );
  gap: 13px;
  margin-top: 16px;
}

.form-field {
  display: grid;
  align-content: start;
  gap: 7px;
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #ffffff;
}

.form-field > span {
  color: var(--ink);
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 700;
}

.form-field select,
.form-field input {
  width: 100%;
  min-height: 42px;
  padding: 8px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  background: #ffffff;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 0.82rem;
}

.form-field select:disabled,
.form-field input:disabled {
  cursor: not-allowed;
  background: #f1f5f9;
  color: var(--muted);
}

.form-field small {
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.72rem;
  line-height: 1.38;
}

.form-field.has-error {
  border-color: #fecaca;
  background: var(--danger-light);
}

.form-field.has-error input,
.form-field.has-error select {
  border-color: var(--danger);
}

.generation-notice {
  display: grid;
  gap: 4px;
  margin-top: 16px;
  padding: 13px 15px;
  border: 1px solid #bfdbfe;
  border-radius: 11px;
  background: var(--surface-blue);
}

.generation-notice strong {
  color: var(--ink);
  font-size: 0.88rem;
}

.generation-notice span {
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.78rem;
  line-height: 1.42;
}

.generation-form .form-actions {
  gap: 9px;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(
    2,
    minmax(0, 1fr)
  );
  gap: 12px;
  margin-top: 18px;
}

.download-card {
  display: flex;
  min-width: 0;
  min-height: 200px;
  flex-direction: column;
  align-items: stretch;
  justify-content: space-between;
  gap: 18px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--surface);
}

.download-card-primary {
  border-color: #bfdbfe;
  background:
    linear-gradient(
      145deg,
      #ffffff 0%,
      var(--accent-light) 100%
    );
}

.download-card h3 {
  margin: 0;
  color: var(--ink);
  font-size: 1rem;
}

.download-card p:not(.section-kicker) {
  margin: 8px 0 0;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.8rem;
  line-height: 1.45;
}

.download-card .control-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  text-decoration: none;
}

.download-card .control-button:hover {
  text-decoration: none;
}

#configuration-section.is-active-stage,
#generation-results.is-active-stage {
  scroll-margin-top: 12px;
}

@media (max-width: 768px) {
  .configuration-grid,
  .download-grid {
    grid-template-columns: 1fr;
  }

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

  .download-card {
    min-height: 0;
  }
}

@media (max-width: 480px) {
  .configuration-fieldset {
    padding: 14px 11px;
  }

  .fieldset-heading {
    flex-direction: column;
    gap: 7px;
  }

  .selection-actions {
    width: 100%;
    justify-content: flex-start;
  }

  .column-options {
    grid-template-columns: 1fr;
  }

  .configuration-grid {
    gap: 9px;
  }

  .form-field {
    padding: 12px;
  }

  .generation-form .form-actions {
    flex-direction: column-reverse;
  }

  .generation-form .form-actions .control-button {
    width: 100%;
  }
}