@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
  /* Default Light Mode Colors (GraphCommons White Canvas feel) */
  --bg-app: #ffffff;
  --bg-panel: #ffffff;
  --border-color: #e0e0e0;
  --text-primary: #111111;
  --text-secondary: #444444;
  --text-muted: #888888;

  --color-primary: #111111;
  --color-primary-hover: #333333;
  --color-primary-light: #f5f5f5;

  --color-success: #00875a;
  --color-success-light: #eef9f5;

  --color-warning: #ff9900;
  --color-warning-light: #fff9e6;

  --color-danger: #de350b;
  --color-danger-light: #ffebe6;

  --shadow-sm: none;
  --shadow-md: none;
  --shadow-lg: none;

  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 4px;

  --scrollbar-thumb: #cccccc;
  --scrollbar-track: #f5f5f5;

  transition: background-color 0.2s ease, border-color 0.2s ease;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    /* Default Dark Mode Colors (GraphCommons Inverted Canvas feel) */
    --bg-app: #111111;
    --bg-panel: #111111;
    --border-color: #333333;
    --text-primary: #ffffff;
    --text-secondary: #aaaaaa;
    --text-muted: #666666;

    --color-primary: #ffffff;
    --color-primary-hover: #dddddd;
    --color-primary-light: #222222;

    --color-success: #36b37e;
    --color-success-light: rgba(54, 179, 126, 0.1);

    --color-warning: #ffab00;
    --color-warning-light: rgba(255, 171, 0, 0.1);

    --color-danger: #ff5630;
    --color-danger-light: rgba(255, 86, 48, 0.1);

    --shadow-sm: none;
    --shadow-md: none;
    --shadow-lg: none;

    --scrollbar-thumb: #444444;
    --scrollbar-track: #222222;
  }
}

/* Class-based theme overrides for toggle button */
html.light {
  --bg-app: #ffffff;
  --bg-panel: #ffffff;
  --border-color: #e0e0e0;
  --text-primary: #111111;
  --text-secondary: #444444;
  --text-muted: #888888;
  --color-primary: #111111;
  --color-primary-hover: #333333;
  --color-primary-light: #f5f5f5;
  --color-success: #00875a;
  --color-success-light: #eef9f5;
  --color-warning: #ff9900;
  --color-warning-light: #fff9e6;
  --color-danger: #de350b;
  --color-danger-light: #ffebe6;
  --shadow-sm: none;
  --shadow-md: none;
  --shadow-lg: none;
  --scrollbar-thumb: #cccccc;
  --scrollbar-track: #f5f5f5;
}

html.dark {
  --bg-app: #111111;
  --bg-panel: #111111;
  --border-color: #333333;
  --text-primary: #ffffff;
  --text-secondary: #aaaaaa;
  --text-muted: #666666;
  --color-primary: #ffffff;
  --color-primary-hover: #dddddd;
  --color-primary-light: #222222;
  --color-success: #36b37e;
  --color-success-light: rgba(54, 179, 126, 0.1);
  --color-warning: #ffab00;
  --color-warning-light: rgba(255, 171, 0, 0.1);
  --color-danger: #ff5630;
  --color-danger-light: rgba(255, 86, 48, 0.1);
  --shadow-sm: none;
  --shadow-md: none;
  --shadow-lg: none;
  --scrollbar-thumb: #444444;
  --scrollbar-track: #222222;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--bg-app);
  color: var(--text-primary);
  font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
  transition: background-color 0.2s ease, color 0.2s ease;
  position: relative;
  overflow-x: hidden;
}

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

/* Header / Shell styling */
.header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  border-bottom: 1.5px solid var(--text-primary);
  margin-bottom: 28px;
}

.shell {
  width: min(1440px, 100% - 40px);
  margin: 0 auto;
  padding: 0 20px 40px 20px;
  position: relative;
  z-index: 1;
}

/* Workspace layout */
.workspace {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.panel {
  background-color: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.input-panel {
  position: sticky;
  top: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

h1 {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

/* Tabs switcher */
.tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--color-primary-light);
  padding: 3px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.tab {
  border: 0;
  background: transparent;
  padding: 8px;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
}

.tab:hover {
  color: var(--text-primary);
}

.tab.active {
  background: var(--color-primary);
  color: var(--bg-panel);
}

/* Forms layout */
.form {
  display: none;
  flex-direction: column;
  gap: 16px;
}

.form.active {
  display: flex;
}

/* Drop zone container */
.drop-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 200px;
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-panel);
  text-align: center;
  cursor: pointer;
  padding: 20px;
  transition: all 0.15s ease;
  position: relative;
}

.drop-zone:hover {
  border-color: var(--text-primary);
  background: var(--color-primary-light);
}

.drop-zone input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.drop-icon-container {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-light);
  color: var(--text-primary);
}

.drop-zone strong {
  max-width: 100%;
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 700;
  overflow-wrap: anywhere;
}

.drop-zone small {
  max-width: 100%;
  font-size: 0.78rem;
  color: var(--text-muted);
  overflow-wrap: anywhere;
}

/* Textarea input */
textarea {
  width: 100%;
  min-height: 260px;
  resize: vertical;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px;
  color: var(--text-primary);
  background: var(--bg-panel);
  font-size: 0.88rem;
  line-height: 1.5;
  outline: none;
  transition: border-color 0.15s;
}

textarea:focus {
  border-color: var(--text-primary);
}

/* Buttons style */
.primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  background: var(--color-primary);
  color: var(--bg-panel);
  font-weight: 700;
  font-size: 0.9rem;
  border: 0;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background 0.15s ease;
}

.primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
}

.primary:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 34px;
  padding: 0 12px;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.82rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
}

.ghost:hover:not(:disabled) {
  background: var(--color-primary-light);
  border-color: var(--text-primary);
}

.ghost:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

/* Status Widget */
.status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  background: var(--color-primary-light);
  font-size: 0.82rem;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  transition: all 0.15s ease;
  min-height: 38px;
  font-weight: 500;
}

.status::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--color-success);
  flex: 0 0 auto;
}

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

.status.error::before {
  background: var(--color-danger);
}

.status-active {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  animation: pulse 2s infinite;
}

/* Results columns */
.results {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Metrics Grid styling */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.metric {
  padding: 16px;
  border-radius: var(--radius-md);
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 12px;
}

.metric-icon-box {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-light);
  color: var(--text-primary);
  flex-shrink: 0;
}

.metric-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow: hidden;
}

.metric span {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.metric strong {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
  word-break: break-all;
}

/* Table panel styling */
.table-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

.section-heading h2 {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-primary);
}

.section-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

#vatCount {
  font-size: 0.8rem;
  color: var(--text-secondary);
  background: var(--color-primary-light);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  font-weight: 600;
}

#reportCount {
  font-size: 0.8rem;
  color: var(--text-secondary);
  background: var(--color-primary-light);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  font-weight: 600;
}

/* Data Table custom formatting */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

th {
  background-color: var(--color-primary-light);
  color: var(--text-secondary);
  font-weight: 700;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 10px 14px;
  border-bottom: 1.5px solid var(--border-color);
  text-align: right;
}

th:first-child {
  text-align: left;
}

td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
  text-align: right;
  font-weight: 500;
}

td:first-child {
  text-align: left;
  font-weight: 700;
}

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

tr:hover td {
  background-color: var(--color-primary-light);
}

.reports-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.reports-table {
  min-width: 840px;
}

.report-row {
  cursor: pointer;
}

.report-row.selected td {
  background-color: var(--color-primary-light);
  box-shadow: inset 0 1px 0 var(--text-primary), inset 0 -1px 0 var(--text-primary);
}

.row-select {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 24px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-panel);
  color: var(--text-primary);
  font-weight: 800;
  font-size: 0.78rem;
  cursor: pointer;
}

.report-row.selected .row-select {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--bg-panel);
}

.mini-status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 24px;
  padding: 2px 8px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--color-primary-light);
  color: var(--text-secondary);
  font-size: 0.74rem;
  font-weight: 800;
  white-space: nowrap;
}

.mini-status.ok {
  border-color: var(--color-success);
  background: var(--color-success-light);
  color: var(--color-success);
}

.mini-status.warn {
  border-color: var(--color-warning);
  background: var(--color-warning-light);
  color: var(--color-warning);
}

.mini-status.fail {
  border-color: var(--color-danger);
  background: var(--color-danger-light);
  color: var(--color-danger);
}

/* Total row or empty state styling */
.empty {
  text-align: center;
  color: var(--text-muted);
  padding: 24px;
  font-style: italic;
}

/* Consistency checks */
.check-panel {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.check-status {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 3px 9px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--color-primary-light);
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 800;
  white-space: nowrap;
}

.check-status.ok {
  border-color: var(--color-success);
  background: var(--color-success-light);
  color: var(--color-success);
}

.check-status.warn {
  border-color: var(--color-warning);
  background: var(--color-warning-light);
  color: var(--color-warning);
}

.check-status.fail {
  border-color: var(--color-danger);
  background: var(--color-danger-light);
  color: var(--color-danger);
}

.check-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.check-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  border: 1px solid var(--border-color);
  border-left-width: 4px;
  border-radius: var(--radius-sm);
  padding: 12px 14px;
}

.check-item strong,
.check-item span {
  display: block;
}

.check-item strong {
  font-size: 0.88rem;
}

.check-item span {
  margin-top: 4px;
  color: var(--text-secondary);
  font-size: 0.78rem;
  overflow-wrap: anywhere;
}

.check-item b {
  font-size: 0.78rem;
  white-space: nowrap;
}

.check-item.ok {
  border-left-color: var(--color-success);
}

.check-item.warn {
  border-left-color: var(--color-warning);
}

.check-item.fail {
  border-left-color: var(--color-danger);
}

.check-item.ok b {
  color: var(--color-success);
}

.check-item.warn b {
  color: var(--color-warning);
}

.check-item.fail b {
  color: var(--color-danger);
}

/* Details grid layout */
.details-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 24px;
}

.details-grid .panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-height: 480px;
}

/* Source lines visual representation */
.source-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  overflow-y: auto;
  padding-right: 4px;
}

.source-item {
  border-left: 2px solid var(--text-primary);
  padding: 8px 12px;
  background: var(--color-primary-light);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.82rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.source-item:hover {
  background: var(--border-color);
}

/* Raw output formatting */
.raw {
  flex-grow: 1;
  overflow: auto;
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--color-primary-light);
  color: var(--text-primary);
  font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;
  font-size: 0.78rem;
  line-height: 1.5;
  white-space: pre-wrap;
}

/* Specific styling for raw output dark container in dark mode */
html.dark .raw {
  background: #000000;
  color: #eeeeee;
}

.hidden {
  display: none !important;
}

/* Theme Switcher Toggle button */
.theme-switch {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.15s ease;
}

.theme-switch:hover {
  color: var(--text-primary);
  border-color: var(--text-primary);
}

/* Pulse animation for loading states */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: .6;
  }
}

/* Custom Scrollbars */
.scroller,
.source-list,
.raw,
.table-wrap {
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

@supports not (scrollbar-color: auto) {
  .scroller::-webkit-scrollbar,
  .source-list::-webkit-scrollbar,
  .raw::-webkit-scrollbar,
  .table-wrap::-webkit-scrollbar {
    width: 5px;
    height: 5px;
  }

  .scroller::-webkit-scrollbar-thumb,
  .source-list::-webkit-scrollbar-thumb,
  .raw::-webkit-scrollbar-thumb,
  .table-wrap::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: var(--radius-sm);
  }

  .scroller::-webkit-scrollbar-track,
  .source-list::-webkit-scrollbar-track,
  .raw::-webkit-scrollbar-track,
  .table-wrap::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
  }
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-logo {
  display: block;
  width: 34px;
  height: 34px;
  object-fit: contain;
  flex: 0 0 auto;
}

.logo-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.logo-text {
  font-family: 'Inter', sans-serif;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  user-select: none;
}

.logo-subtitle {
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 500;
  line-height: 1.2;
  user-select: none;
}

/* Media query responsive states */
@media (max-width: 1024px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .input-panel {
    position: static;
  }

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

@media (max-width: 768px) {
  .summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .check-item {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .summary-grid {
    grid-template-columns: 1fr;
  }

  .header-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .theme-switch {
    align-self: flex-end;
    margin-top: -46px;
  }
}

/* Marketing Banner and Cards */
.marketing-banner {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--color-primary-light);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin-bottom: 24px;
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

.banner-badge {
  background: var(--color-primary);
  color: var(--bg-panel);
  font-size: 0.72rem;
  font-weight: 800;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.marketing-banner strong {
  color: var(--text-primary);
}

.marketing-card {
  margin-top: 12px;
  background: var(--color-primary-light);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-sm);
  padding: 18px;
}

.marketing-card h3 {
  font-size: 0.9rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.marketing-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.marketing-card li {
  display: flex;
  gap: 8px;
  font-size: 0.8rem;
  line-height: 1.4;
  color: var(--text-secondary);
}

.marketing-card li strong {
  color: var(--text-primary);
}

.marketing-card li svg {
  flex-shrink: 0;
  color: var(--color-success);
  margin-top: 2px;
}

@media (max-width: 768px) {
  .marketing-banner {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 14px 16px;
  }
}