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

:root {
  --app-bg: rgb(255, 255, 255);
  --surface: rgb(255, 255, 255);
  --surface-muted: rgb(255, 255, 255);
  --ink: #171717;
  --ink-muted: #605e57;
  --line: #d6d2c6;
  --brand: #111111;
  --accent: #2f6fdd;
  --accent-hover: #275ebc;
  --danger: #b93a48;
  --danger-hover: #9f2f3d;
  --success-bg: #d8efdf;
  --success-ink: #1d5d2d;
  --warning-bg: #fbefcf;
  --warning-ink: #735e1d;
  --info-bg: #d7e6ff;
  --info-ink: #284f8a;
  --secondary-bg: #e3e1d7;
  --secondary-ink: #4d4b43;
  --error-bg: #f7dbe0;
  --error-ink: #732936;
  --sidebar-width: 252px;
}

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

body {
  font-family: 'Inter', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  color: var(--ink);
  background: var(--app-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

button {
  cursor: pointer;
  font-family: inherit;
}

.app-shell {
  display: flex;
  min-height: 100vh;
}

.prototype-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
}

:is(.app-sidebar, .sidebar) {
  width: var(--sidebar-width);
  flex-shrink: 0;
  border-right: 1px solid var(--line);
  background: linear-gradient(180deg, #f1ede2 0%, #e9e3d5 100%);
  padding: 22px 14px;
}

:is(.brand-block, .brand) {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 10px 16px;
  border-bottom: 1px solid var(--line);
}

.brand {
  margin-bottom: 12px;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  background: var(--brand);
  color: #f4f1e6;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-title,
.brand-text h1,
.brand-block h1 {
  font-family: 'Iowan Old Style', 'Palatino Linotype', 'Book Antiqua', Georgia, serif;
  font-style: italic;
  font-size: 20px;
  line-height: 1;
  letter-spacing: -0.02em;
}

.brand-subtitle,
.brand-text p,
.brand-block p {
  margin-top: 4px;
  color: var(--ink-muted);
  font-size: 12px;
}

.sidebar-group {
  margin-top: 18px;
}

:is(.sidebar-group-label, .group-label, .sidebar-label) {
  padding: 0 10px;
  margin-bottom: 8px;
  color: var(--ink-muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.11em;
}

.group-label,
.sidebar-label {
  margin-top: 18px;
}

:is(.sidebar-link, .nav-btn, .nav-button) {
  display: block;
  width: 100%;
  margin-bottom: 6px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--ink);
  text-align: left;
  padding: 11px 10px;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.15s ease;
}

:is(.sidebar-link, .nav-btn, .nav-button):hover {
  border-color: var(--line);
  background: #f5f3ea;
  text-decoration: none;
}

:is(.sidebar-link, .nav-btn, .nav-button).is-active {
  background: var(--brand);
  color: #f5f2e8;
  border-color: var(--brand);
}

.app-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.workspace,
.app-content {
  padding: 22px;
}

:is(.app-topbar, .topbar) {
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 88%, white);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.app-topbar {
  height: 76px;
  border-left: none;
  border-right: none;
  border-top: none;
  padding: 0 24px;
}

.topbar {
  padding: 10px 12px;
}

.topbar-section,
.topbar-eyebrow,
.search-label,
.view-category {
  color: var(--ink-muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.topbar-title,
.view-header h2,
.page-header h1,
.page-header h3 {
  font-family: 'Iowan Old Style', 'Palatino Linotype', 'Book Antiqua', Georgia, serif;
  font-style: italic;
  line-height: 1;
  letter-spacing: -0.02em;
}

.topbar-title,
.view-header h2 {
  font-size: 30px;
}

.page-header h1 {
  font-size: 34px;
}

.page-header h3 {
  font-size: 30px;
}

.topbar-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.system-indicator,
.date-pill {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  background: var(--surface-muted);
  color: var(--ink-muted);
  padding: 8px 11px;
  font-size: 12px;
  white-space: nowrap;
}

.system-indicator::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: #2a7f48;
  margin-right: 8px;
}

.card {
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 18px;
  margin-bottom: 18px;
  box-shadow: 0 8px 20px rgba(15, 15, 15, 0.03);
}

.card h3 {
  font-family: 'Iowan Old Style', 'Palatino Linotype', 'Book Antiqua', Georgia, serif;
  font-style: italic;
  font-size: 20px;
  margin-bottom: 12px;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 22px;
  flex-wrap: wrap;
}

.inline-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.btn,
.button,
.tool-btn,
.tool-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  background: #ece9df;
  color: var(--ink);
  padding: 9px 14px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
}

.btn:hover:not(:disabled),
.button:hover:not(:disabled),
.tool-btn:hover:not(:disabled),
.tool-button:hover:not(:disabled) {
  background: #e2dfd3;
  text-decoration: none;
}

.btn:disabled,
.button:disabled,
.tool-btn:disabled,
.tool-button:disabled,
.button[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-sm {
  padding: 6px 10px;
  font-size: 12px;
}

.btn-primary,
.button-primary,
.tool-btn-primary {
  background: var(--brand);
  border-color: var(--brand);
  color: #f6f3e9;
}

.btn-secondary,
.button-secondary {
  background: #e6e2d8;
  border-color: #d0ccbf;
  color: #3e3c35;
}

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

.btn-danger:hover:not(:disabled) {
  background: var(--danger-hover);
}

.btn-link {
  border: 0;
  background: transparent;
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-decoration: none;
  padding: 0;
}

.btn-link:hover {
  color: var(--accent-hover);
  text-decoration: none;
}

.table-wrap {
  overflow: auto;
}

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

.table th,
.table td {
  text-align: left;
  border-bottom: 1px solid var(--line);
  padding: 11px 8px;
  font-size: 13px;
  vertical-align: top;
}

.table th {
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 11px;
  font-weight: 600;
}

.table tr:hover td {
  background: rgba(255, 255, 255, 0.36);
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
}

.form-group input,
.form-group textarea,
.form-group select,
.field input,
.field select,
.search-wrap input {
  width: 100%;
  border: 1px solid var(--line);
  background: #ffffff;
  color: var(--ink);
  padding: 10px 12px;
  font-size: 14px;
}

.form-group textarea {
  resize: vertical;
}

.form-help-text,
.muted,
.toolbar-note,
.page-subtitle,
.page-header p {
  color: var(--ink-muted);
}

.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 4px 8px;
  font-size: 11px;
  font-weight: 600;
  text-transform: capitalize;
}

.badge-success,
.badge-good {
  background: var(--success-bg);
  color: var(--success-ink);
}

.badge-warning,
.badge-warn {
  background: var(--warning-bg);
  color: var(--warning-ink);
}

.badge-danger {
  background: var(--error-bg);
  color: var(--error-ink);
}

.badge-info {
  background: var(--info-bg);
  color: var(--info-ink);
}

.badge-secondary {
  background: var(--secondary-bg);
  color: var(--secondary-ink);
}

.alert,
.status-banner,
.banner,
.callout {
  border: 1px solid transparent;
  padding: 10px 12px;
  margin-bottom: 16px;
}

.alert-error {
  background: var(--error-bg);
  color: var(--error-ink);
  border-color: #e4aeb9;
}

.alert-success,
.status-banner,
.banner {
  background: #e1f4e6;
  color: var(--success-ink);
  border-color: #b7debf;
}

.callout {
  background: var(--error-bg);
  color: var(--error-ink);
  border-color: #e4aeb9;
}

.hidden {
  display: none;
}

.loading {
  padding: 28px;
  text-align: center;
  color: var(--ink-muted);
}

.empty-state,
.empty {
  text-align: center;
  padding: 34px;
  color: var(--ink-muted);
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.kpi-card {
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 14px;
}

.kpi-card p {
  font-size: 11px;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.kpi-card strong {
  display: block;
  margin-top: 8px;
  font-size: 30px;
  letter-spacing: -0.03em;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.stack {
  display: grid;
  gap: 10px;
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
}

.prototype-shell[data-density='dense'] .card,
.body-dense .card {
  padding: 14px;
}

.prototype-shell[data-density='dense'] .table th,
.prototype-shell[data-density='dense'] .table td,
.body-dense .table th,
.body-dense .table td {
  padding: 9px;
}

.prototype-shell[data-density='dense'] :is(.button, .tool-button, .tool-btn),
.body-dense .btn {
  padding: 8px 12px;
}

@media (max-width: 1200px) {
  .kpi-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 980px) {
  .app-shell {
    flex-direction: column;
  }

  :is(.app-sidebar, .sidebar) {
    width: 100%;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .app-topbar {
    height: auto;
    padding: 16px;
    flex-direction: column;
    align-items: flex-start;
  }

  .topbar-title,
  .view-header h2 {
    font-size: 26px;
  }

  .workspace,
  .app-content {
    padding: 14px;
  }

  .page-header {
    flex-direction: column;
  }

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