:root {
  /* Canonical FieldScout premium brand primitives */
  --fs-brand-ink-950: #04111f;
  --fs-brand-ink-900: #061625;
  --fs-brand-ink-800: #06283a;
  --fs-brand-teal-900: #073f49;
  --fs-brand-teal-700: #0b7f78;
  --fs-brand-mint-300: #70eadc;
  --fs-brand-slate-600: #385067;
  --fs-brand-slate-700: #30495d;
  --fs-brand-surface-50: #f8fcfb;

  /* Canonical premium semantic roles */
  --fs-theme-color-hero-deep: var(--fs-brand-ink-950);
  --fs-theme-color-hero-mid: var(--fs-brand-ink-800);
  --fs-theme-color-brand-ink: var(--fs-brand-ink-900);
  --fs-theme-color-brand-accent: var(--fs-brand-teal-700);
  --fs-theme-color-brand-accent-dark: var(--fs-brand-teal-900);
  --fs-theme-color-brand-highlight: var(--fs-brand-mint-300);
  --fs-theme-color-brand-muted: var(--fs-brand-slate-600);
  --fs-theme-color-brand-secondary: var(--fs-brand-slate-700);
  --fs-theme-color-premium-page: var(--fs-brand-surface-50);

  /* One source of truth for the FieldScout top-edge ombre and dark display scale. */
  --fs-ombre-gradient: linear-gradient(90deg, var(--fs-theme-color-brand-accent), var(--fs-theme-color-brand-highlight));
  --fs-display-home-hero: clamp(1.74rem, calc(1.23rem + 2.55vw), 2.915rem);
  --fs-display-dark-hero: clamp(2.39rem, calc(0.97rem + 4.35vw), 4.89rem);
  --fs-display-dark-hero-compact: clamp(1.83rem, calc(0.55rem + 2.83vw), 3.1rem);
  --fs-display-dark-panel: clamp(1.565rem, calc(0.66rem + 2.03vw), 2.49rem);

  /* Brand */
  --fs-color-field-navy-950: #0b172a;
  --fs-color-field-navy-900: #10223f;
  --fs-color-field-navy-800: #15345f;
  --fs-color-field-navy-700: #0f3d33;
  --fs-color-weather-teal-700: #0f766e;
  --fs-color-weather-teal-600: #0d9488;
  --fs-color-info-teal-600: #0d9488;
  --fs-color-info-teal-700: #0f766e;
  --fs-color-amber-500: #d97706;

  /* Neutrals */
  --fs-color-slate-950: #020617;
  --fs-color-slate-900: #0f172a;
  --fs-color-slate-800: #1e293b;
  --fs-color-slate-700: #334155;
  --fs-color-slate-600: #475569;
  --fs-color-slate-500: #64748b;
  --fs-color-slate-300: #cbd5e1;
  --fs-color-slate-200: #e2e8f0;
  --fs-color-slate-100: #f1f5f9;
  --fs-color-slate-50: #f8fafc;

  /* Surfaces */
  --fs-color-page: #f6f8fb;
  --fs-color-surface: #ffffff;
  --fs-color-surface-muted: #f8fafc;
  --fs-color-surface-strong: #ecfdf5;

  /* Text */
  --fs-color-text: var(--fs-color-slate-900);
  --fs-color-text-muted: var(--fs-color-slate-600);
  --fs-color-text-subtle: var(--fs-color-slate-500);
  --fs-color-text-inverse: #ffffff;

  /* Borders */
  --fs-color-border: #d8e0ea;
  --fs-color-border-strong: #b7c4d4;

  /* Professional palette aliases */
  --fs-palette-primary: var(--fs-color-field-navy-900);
  --fs-palette-primary-hover: var(--fs-color-field-navy-800);
  --fs-palette-primary-soft: #dff7ef;
  --fs-palette-accent: var(--fs-color-weather-teal-700);
  --fs-palette-accent-hover: var(--fs-color-weather-teal-600);
  --fs-palette-accent-soft: #ecfdf5;
  --fs-palette-link: var(--fs-color-field-navy-700);
  --fs-palette-link-hover: var(--fs-color-field-navy-900);
  --fs-palette-highlight: var(--fs-color-amber-500);
  --fs-palette-highlight-soft: #fffbeb;

  /* Status */
  --fs-color-success: #15803d;
  --fs-color-success-bg: #ecfdf3;
  --fs-color-warning: #b45309;
  --fs-color-warning-bg: #fffbeb;
  --fs-color-danger: #b91c1c;
  --fs-color-danger-bg: #fef2f2;
  --fs-color-info: var(--fs-color-info-teal-700);
  --fs-color-info-bg: #ecfdf5;

  /* Typography */
  --fs-font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --fs-font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  --fs-font-size-xs: 0.75rem;
  --fs-font-size-sm: 0.875rem;
  --fs-font-size-base: 1rem;
  --fs-font-size-lg: 1.125rem;
  --fs-font-size-xl: 1.25rem;
  --fs-font-size-2xl: 1.5rem;
  --fs-font-size-3xl: 2rem;
  --fs-font-size-4xl: 2.75rem;
  --fs-line-height-tight: 1.15;
  --fs-line-height-base: 1.5;
  --fs-line-height-relaxed: 1.65;
  --fs-font-weight-regular: 400;
  --fs-font-weight-medium: 600;
  --fs-font-weight-bold: 800;

  /* Spacing */
  --fs-space-1: 0.25rem;
  --fs-space-2: 0.5rem;
  --fs-space-3: 0.75rem;
  --fs-space-4: 1rem;
  --fs-space-5: 1.25rem;
  --fs-space-6: 1.5rem;
  --fs-space-8: 2rem;
  --fs-space-10: 2.5rem;
  --fs-space-12: 3rem;
  --fs-space-16: 4rem;

  /* Radius */
  --fs-radius-sm: 0.375rem;
  --fs-radius-md: 0.75rem;
  --fs-radius-lg: 1rem;
  --fs-radius-xl: 1.5rem;
  --fs-radius-pill: 999px;

  /* Shadow */
  --fs-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.08);
  --fs-shadow-md: 0 8px 24px rgba(15, 23, 42, 0.10);
  --fs-shadow-lg: 0 18px 45px rgba(15, 23, 42, 0.12);

  /* Focus */
  --fs-focus-ring: 0 0 0 3px rgba(13, 148, 136, 0.28);
  --fs-focus-outline: 2px solid var(--fs-color-weather-teal-600);

  /* Layout */
  --fs-layout-page-max: 1180px;
  --fs-layout-readable-max: 760px;
  --fs-layout-shell-padding: clamp(1rem, 2vw, 2rem);

  /* Z-index */
  --fs-z-base: 1;
  --fs-z-header: 20;
  --fs-z-overlay: 50;
  --fs-z-modal: 100;
}

/* Canonical FieldScout ombre: page edge, primary heroes, and restrained major panels. */
html::before {
  content: "";
  position: fixed;
  inset: 0 0 auto;
  block-size: 0.25rem;
  background: var(--fs-ombre-gradient);
  pointer-events: none;
  z-index: 1000;
}

.fs-tools-card::before,
.fs-tools-hero::before,
.fs-surface-hero::before,
.fs-admin-command-hero::before,
body.fs-admin-page [data-fs-admin-hero]::before,
body.fs-admin-page .fs-admin-hero::before,
body.fs-admin-page .fs-admin-owner-hero::before,
body.fs-admin-page .fs-admin-panel::before,
body.fs-admin-page .card::before,
body.fs-admin-page .fs-admin-summary-card::before,
body.fs-admin-page .fs-admin-action-card::before,
body.fs-admin-page .fs-admin-surface-card::before,
body.fs-admin-page .fs-surface-card::before,
body.fs-admin-page .fs-admin-card::before,
body.fs-admin-page .fs-admin-dashboard-card::before,
body.fs-admin-page .fs-admin-panel-link::before,
body.fs-admin-page .fs-admin-control-links a.card::before,
[data-fs-workspace-hero]::before,
[data-fs-unfiled-building-files]::before,
[data-fs-project-code-create]::before,
[data-fs-saved-work-card="project-codes"]::before,
[data-fs-saved-work-card="recent-saved-work"]::before,
.fs-wap-chat-window::before,
.fs-field-docs-hero::before,
.fs-field-docs-panel::before,
body.fs-admin-page .fs-admin-empty::before,
.fs-agency-setup-empty::before,
[data-fs-home-hero]::before,
[data-fs-home-section="pricing"]::before,
.fs-public-major-panel::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  block-size: 0.25rem;
  background: var(--fs-ombre-gradient);
  opacity: 0.84;
  pointer-events: none;
  z-index: 1;
}

:where(.fs-tools-hero, .fs-surface-hero, .fs-admin-command-hero, body.fs-admin-page .fs-admin-panel, [data-fs-workspace-hero], [data-fs-unfiled-building-files], [data-fs-project-code-create], [data-fs-saved-work-card="project-codes"], [data-fs-saved-work-card="recent-saved-work"], .fs-wap-chat-window, .fs-field-docs-hero, .fs-field-docs-panel, body.fs-admin-page .fs-admin-empty, .fs-agency-setup-empty) {
  position: relative;
  overflow: hidden;
}

:where([data-fs-home-hero], [data-fs-home-section="pricing"]) {
  position: relative;
  overflow: hidden;
}

/* Forced light theme role tokens */
:root,
[data-fs-theme="light"],
[data-fs-theme="dark"] {
  color-scheme: light;
  --fs-theme-color-page: var(--fs-color-page);
  --fs-theme-color-surface: var(--fs-color-surface);
  --fs-theme-color-surface-muted: var(--fs-color-surface-muted);
  --fs-theme-color-surface-strong: var(--fs-color-surface-strong);
  --fs-theme-color-text: var(--fs-color-text);
  --fs-theme-color-text-muted: var(--fs-color-text-muted);
  --fs-theme-color-text-subtle: var(--fs-color-text-subtle);
  --fs-theme-color-border: var(--fs-color-border);
  --fs-theme-color-border-strong: var(--fs-color-border-strong);
  --fs-theme-color-primary: var(--fs-palette-primary);
  --fs-theme-color-primary-hover: var(--fs-palette-primary-hover);
  --fs-theme-color-primary-text: #ffffff;
  --fs-theme-color-accent: var(--fs-palette-accent);
  --fs-theme-color-accent-hover: var(--fs-palette-accent-hover);
  --fs-theme-color-link: var(--fs-palette-link);
  --fs-theme-color-link-hover: var(--fs-palette-link-hover);
  --fs-theme-color-highlight: var(--fs-palette-highlight);
  --fs-theme-focus-ring: var(--fs-focus-ring);
}

/* VISUAL-CONVERGENCE-01: product-wide visual grammar tokens */
:root {
  --fs-vc-page-max: 1180px;
  --fs-vc-admin-max: 1360px;
  --fs-vc-gutter: clamp(1rem, 2.4vw, 2rem);
  --fs-vc-section-gap: clamp(1.25rem, 2.6vw, 2rem);
  --fs-vc-section-gap-compact: clamp(1rem, 2vw, 1.45rem);
  --fs-vc-layer-gap: clamp(0.8rem, 1.6vw, 1.15rem);
  --fs-vc-shell-pad-y-compact: clamp(1rem, 1.8vw, 1.5rem);
  --fs-vc-skinny-hero-pad-y: clamp(1.45rem, 2.8vw, 2rem);
  --fs-vc-skinny-hero-pad-x: clamp(1.45rem, 3.8vw, 2.5rem);
  --fs-vc-card-gap: clamp(0.9rem, 2vw, 1.25rem);
  --fs-vc-radius-sm: 12px;
  --fs-vc-radius-md: 18px;
  --fs-vc-radius-lg: 24px;
  --fs-vc-border: rgba(15, 23, 42, 0.10);
  --fs-vc-border-strong: rgba(15, 23, 42, 0.16);
  --fs-vc-surface: rgba(255, 255, 255, 0.92);
  --fs-vc-surface-muted: rgba(248, 250, 252, 0.88);
  --fs-vc-surface-strong: #ffffff;
  --fs-vc-text: #0f172a;
  --fs-vc-text-muted: #475569;
  --fs-vc-text-soft: #64748b;
  --fs-vc-primary: #0f766e;
  --fs-vc-primary-strong: #115e59;
  --fs-vc-primary-soft: rgba(20, 184, 166, 0.14);
  --fs-vc-focus: rgba(20, 184, 166, 0.34);
  --fs-vc-shadow-sm: 0 10px 24px rgba(15, 23, 42, 0.08);
  --fs-vc-shadow-md: 0 18px 44px rgba(15, 23, 42, 0.12);
  --fs-vc-shadow-lg: 0 26px 70px rgba(15, 23, 42, 0.16);
  --fs-vc-action-height: 44px;
  --fs-vc-action-pad-x: 1rem;
  --fs-vc-transition: 160ms ease;
}