:root {
  --bg-canvas-light: #f8fafc;
  --bg-canvas-dark: #090d16;
  --bg-surface-light: #ffffff;
  --bg-surface-dark: #111827;
  --bg-accent-light: #f1f5f9;
  --bg-accent-dark: #172135;
  --text-primary-light: #0f172a;
  --text-primary-dark: #f8fafc;
  --text-muted-light: #475569;
  --text-muted-dark: #94a3b8;
  --border-subtle-light: #e2e8f0;
  --border-subtle-dark: #1e293b;

  /* Default Brand: Alpine Indigo (Proton / CERN inspired) */
  --bn-brand-light: #4338ca;
  --bn-brand-dark: #6366f1;

  --color-emerald-light: #059669;
  --color-emerald-dark: #10b981;
  --color-sky-light: #0284c7;
  --color-sky-dark: #38bdf8;
  --color-amber-light: #d97706;
  --color-amber-dark: #fbbf24;
  --color-rose-light: #dc2626;
  --color-rose-dark: #f87171;
  --color-violet-light: #6d28d9;
  --color-violet-dark: #a78bfa;

  --font-size-xs: 11.5px;
  --font-size-sm: 12.5px;
  --font-size-base: 14px;
  --font-size-md: 15px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 10px;
  --radius-2xl: 12px;
  --radius-pill: 9999px;

  --bg-canvas: var(--bg-canvas-light);
  --bg-surface: var(--bg-surface-light);
  --bg-accent: var(--bg-accent-light);
  --text-primary: var(--text-primary-light);
  --text-muted: var(--text-muted-light);
  --border-subtle: var(--border-subtle-light);
  --bn-brand: var(--bn-brand-light);
  --color-emerald: var(--color-emerald-light);
  --color-sky: var(--color-sky-light);
  --color-amber: var(--color-amber-light);
  --color-rose: var(--color-rose-light);
  --color-violet: var(--color-violet-light);

  @media (prefers-color-scheme: dark) {
    --bg-canvas: var(--bg-canvas-dark);
    --bg-surface: var(--bg-surface-dark);
    --bg-accent: var(--bg-accent-dark);
    --text-primary: var(--text-primary-dark);
    --text-muted: var(--text-muted-dark);
    --border-subtle: var(--border-subtle-dark);
    --bn-brand: var(--bn-brand-dark);
    --color-emerald: var(--color-emerald-dark);
    --color-sky: var(--color-sky-dark);
    --color-amber: var(--color-amber-dark);
    --color-rose: var(--color-rose-dark);
    --color-violet: var(--color-violet-dark);
  }

  @supports (color: light-dark(white, black)) {
    --bg-canvas: light-dark(var(--bg-canvas-light), var(--bg-canvas-dark));
    --bg-surface: light-dark(var(--bg-surface-light), var(--bg-surface-dark));
    --bg-accent: light-dark(var(--bg-accent-light), var(--bg-accent-dark));
    --text-primary: light-dark(var(--text-primary-light), var(--text-primary-dark));
    --text-muted: light-dark(var(--text-muted-light), var(--text-muted-dark));
    --border-subtle: light-dark(var(--border-subtle-light), var(--border-subtle-dark));
    --bn-brand: light-dark(var(--bn-brand-light), var(--bn-brand-dark));
    --color-emerald: light-dark(var(--color-emerald-light), var(--color-emerald-dark));
    --color-sky: light-dark(var(--color-sky-light), var(--color-sky-dark));
    --color-amber: light-dark(var(--color-amber-light), var(--color-amber-dark));
    --color-rose: light-dark(var(--color-rose-light), var(--color-rose-dark));
    --color-violet: light-dark(var(--color-violet-light), var(--color-violet-dark));
  }

  color-scheme: light dark;
  accent-color: var(--bn-brand);
}

/* Reactive Theme Presets via :where() for zero specificity bloat */
:where([data-theme="alpine"]) {
  --bn-brand-light: #4338ca;
  --bn-brand-dark: #6366f1;
}

:where([data-theme="emerald"]) {
  --bn-brand-light: #059669;
  --bn-brand-dark: #10b981;
}

:where([data-theme="sovereign"]) {
  --bn-brand-light: #dc2626;
  --bn-brand-dark: #ef4444;
}

:where([data-theme="zurich"]) {
  --bn-brand-light: #0284c7;
  --bn-brand-dark: #38bdf8;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: var(--font-size-base);
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  line-height: 1.55;
  min-block-size: 100dvh;
  -webkit-font-smoothing: antialiased;
}

/* Canonical .flow spacing rhythm */
.flow {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.flow-sm {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

:is(body, html) :is(.flow, .flow-sm) > * {
  margin-block-start: 0;
  margin-block-end: 0;
}

.maxw-site {
  max-inline-size: 1320px;
  margin-inline: auto;
  padding-inline: 24px;
}

.admin-shell {
  inline-size: 100%;
  padding-inline: 24px;
  padding-block: 16px 40px;
}

/* Header & Navigation */
.site-header {
  background: var(--bg-surface);
  border-block-end: 1px solid var(--border-subtle);
  position: sticky;
  inset-block-start: 0;
  z-index: 100;
}

.site-header-inner {
  min-block-size: 62px;
  display: flex;
  flex-wrap: wrap;
  align-items: safe center;
  justify-content: space-between;
  gap: 16px;
  padding-block: 10px;
}

.brand {
  display: inline-flex;
  align-items: safe center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-mark {
  inline-size: 38px;
  block-size: 38px;
  border-radius: var(--radius-lg);
  background: var(--bn-brand);
  color: #ffffff;
  display: grid;
  place-content: center;
  font-weight: 800;
  font-size: var(--font-size-md);
}

.brand-title {
  font-size: var(--font-size-md);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.brand-sub {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.header-actions {
  display: flex;
  flex-wrap: wrap;
  flex-wrap: balance;
  align-items: safe center;
  gap: 10px;
}

.header-nav-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: var(--radius-md);
}

.header-nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-accent);
}

/* Alternating Sections (bc-primary <-> bc-maskaccent) */
.section-primary {
  background-color: var(--bg-canvas);
  padding-block: 56px;
  border-block-end: 1px solid var(--border-subtle);
}

.section-accent {
  background-color: var(--bg-surface);
  padding-block: 48px;
  border-block-end: 1px solid var(--border-subtle);
}

/* Swiss Tech Hero Architecture */
.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.95fr;
  gap: 40px;
  align-items: center;
}

@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

.eyebrow-pill {
  display: inline-flex;
  align-items: safe center;
  gap: 8px;
  align-self: flex-start;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--text-muted);
}

.status-dot {
  inline-size: 7px;
  block-size: 7px;
  border-radius: 50%;
  background: var(--color-emerald);
}

.hero-display {
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.025em;
  margin: 0;
}

.hero-lead {
  font-size: 15.5px;
  color: var(--text-muted);
  max-inline-size: 62ch;
  line-height: 1.6;
  margin: 0;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* Swiss Platform Architecture Panel (Right column of Hero) */
.swiss-matrix-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-2xl);
  padding: 20px;
}

.matrix-row {
  display: flex;
  align-items: safe center;
  justify-content: space-between;
  gap: 12px;
  padding-block: 11px;
  border-block-end: 1px solid var(--border-subtle);
  text-decoration: none;
  color: var(--text-primary);
}

.matrix-row:last-child {
  border-block-end: none;
  padding-block-end: 0;
}

.matrix-row:hover .card-title {
  color: var(--bn-brand);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: safe center;
  justify-content: space-between;
  gap: 12px;
}

.page-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  line-height: 1.25;
  margin: 0;
}

.section-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin: 0;
}

.section-lead {
  font-size: var(--font-size-base);
  color: var(--text-muted);
  max-inline-size: 68ch;
  margin: 0;
}

/* Unified Buttons (Zero !important, Strict Two-Tone) */
.first-round-button,
.second-round-button {
  display: inline-flex;
  align-items: safe center;
  justify-content: center;
  gap: 8px;
  block-size: 36px;
  padding-inline: 15px;
  border-radius: var(--radius-lg);
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: opacity 0.15s ease, border-color 0.15s ease;
}

.first-round-button {
  background-color: var(--bn-brand);
  color: #ffffff;
  border: 1px solid transparent;
}

.second-round-button {
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}

.first-round-button:hover,
.second-round-button:hover {
  opacity: 0.9;
}

.btn-sm {
  block-size: 30px;
  padding-inline: 11px;
  font-size: var(--font-size-sm);
}

.v-icon {
  flex-shrink: 0;
  display: inline-block;
  vertical-align: middle;
}

/* KPI Strip (Flat, zero nested buttons) */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.bn-kpi-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.kpi-label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.kpi-value {
  font-size: var(--font-size-xl);
  font-weight: 800;
  line-height: 1.2;
}

.kpi-meta {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

/* Cards Grid & Subgrid (No Box-in-Box) */
.cards-subgrid {
  inline-size: 100%;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  grid-auto-rows: auto;
  gap: 16px;
}

.entity-card {
  grid-row: span 3;
  display: grid;
  grid-template-rows: auto 1fr auto;
  grid-template-rows: subgrid;
  gap: 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 18px;
}

.card-header-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.card-title-group {
  display: flex;
  align-items: safe center;
  gap: 12px;
}

.header-icon-box {
  inline-size: 38px;
  block-size: 38px;
  border-radius: var(--radius-lg);
  background: var(--bg-accent);
  color: var(--bn-brand);
  display: grid;
  place-content: center;
  flex-shrink: 0;
}

.card-title {
  font-size: var(--font-size-md);
  font-weight: 700;
  margin: 0;
}

.card-subtitle {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.card-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: var(--font-size-base);
  color: var(--text-muted);
}

.card-metrics-line {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  padding-block-start: 8px;
  border-block-start: 1px solid var(--border-subtle);
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.card-metrics-line strong {
  color: var(--text-primary);
}

.card-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: safe center;
  justify-content: space-between;
  gap: 8px;
  padding-block-start: 10px;
  border-block-start: 1px solid var(--border-subtle);
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

/* Interactive Branding & Logo Selector Cards in Backoffice */
.choice-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 14px;
}

.choice-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-align: left;
  font-family: inherit;
  color: var(--text-primary);
  cursor: pointer;
  transition: border-color 0.15s ease;
}

.choice-card:hover {
  border-color: var(--bn-brand);
}

.choice-card.is-selected {
  border-color: var(--bn-brand);
  box-shadow: 0 0 0 1px var(--bn-brand);
}

.swatch-dot {
  inline-size: 16px;
  block-size: 16px;
  border-radius: 50%;
  display: inline-block;
}

.swatch-alpine {
  background-color: #4338ca;
}

.swatch-emerald {
  background-color: #059669;
}

.swatch-sovereign {
  background-color: #dc2626;
}

.swatch-zurich {
  background-color: #0284c7;
}

/* Badges */
.account-badge {
  display: inline-flex;
  align-items: safe center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

.badge--emerald {
  background: rgba(16, 185, 129, 0.14);
  color: var(--color-emerald);
}

.badge--sky {
  background: rgba(14, 165, 233, 0.14);
  color: var(--color-sky);
}

.badge--amber {
  background: rgba(245, 158, 11, 0.14);
  color: var(--color-amber);
}

.badge--rose {
  background: rgba(244, 63, 94, 0.14);
  color: var(--color-rose);
}

.badge--violet {
  background: rgba(124, 58, 237, 0.14);
  color: var(--color-violet);
}

/* Progress Bar */
.progress-track {
  inline-size: 100%;
  block-size: 6px;
  background: var(--bg-accent);
  border-radius: var(--radius-pill);
  overflow: clip;
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--text-primary);
}

/* Trait Tags */
.trait-list {
  display: flex;
  flex-wrap: wrap;
  flex-wrap: balance;
  gap: 6px;
}

.trait-chip {
  font-size: var(--font-size-xs);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  background: var(--bg-accent);
  color: var(--text-primary);
}

/* Sticky Segmented Admin Navigation */
.admin-entity-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: safe center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
}

.nav-segments {
  display: flex;
  flex-wrap: wrap;
  flex-wrap: balance;
  gap: 6px;
}

.nav-segment {
  display: inline-flex;
  align-items: safe center;
  gap: 6px;
  block-size: 32px;
  padding-inline: 12px;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-muted);
  border: 1px solid transparent;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.nav-segment.is-active {
  background: var(--bg-accent);
  color: var(--text-primary);
  border-color: var(--border-subtle);
}

/* Left-aligned Data Tables (.admin-table) */
.table-container {
  inline-size: 100%;
  overflow-x: auto;
  scrollbar-gutter: stable;
  overscroll-behavior: contain;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
}

.admin-table {
  inline-size: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: var(--font-size-sm);
}

.admin-table th,
.admin-table td {
  text-align: left;
  padding: 10px 14px;
  border-block-end: 1px solid var(--border-subtle);
  vertical-align: top;
}

.admin-table th {
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-muted);
  background: var(--bg-accent);
}

.admin-table tr:last-child td {
  border-block-end: none;
}

/* Info Box System */
.info-box-page {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-inline-start: 4px solid var(--bn-brand);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
}

.info-box-error {
  border-inline-start-color: var(--color-rose);
  color: var(--color-rose);
}

.snippet {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  line-clamp: 3;
  overflow: clip;
  margin: 0;
}

/* Login Layout */
.login-shell {
  min-block-size: 100dvh;
  display: grid;
  place-content: center;
  padding: 24px;
}

.login-box {
  inline-size: min(400px, 92dvw);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-2xl);
  padding: 24px;
}

/* Modals (Past = Left, Future = Right) */
dialog {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-2xl);
  padding: 0;
  inline-size: min(520px, 92dvw);
}

dialog::backdrop {
  background-color: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(3px);
}

.modal-header {
  display: flex;
  align-items: safe center;
  justify-content: space-between;
  padding: 16px 20px;
  border-block-end: 1px solid var(--border-subtle);
}

.modal-title {
  font-size: var(--font-size-md);
  font-weight: 700;
  margin: 0;
}

.modal-body {
  padding: 20px;
}

.modal-footer {
  display: flex;
  align-items: safe center;
  justify-content: space-between;
  padding: 14px 20px;
  border-block-start: 1px solid var(--border-subtle);
  background: var(--bg-accent);
}

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

.field-label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.field-input,
.bn-select,
.field-textarea {
  background: var(--bg-canvas);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 7px 10px;
  font-family: inherit;
  font-size: var(--font-size-base);
}

.bn-select option {
  font-family: inherit;
  font-size: inherit;
}

.site-footer {
  padding-block: 28px;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.site-footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: safe center;
  justify-content: space-between;
  gap: 12px;
}

.hidden {
  display: none !important;
}