diff --git a/src/ae-firefly.css b/src/ae-firefly.css
new file mode 100644
index 00000000..a06663d7
--- /dev/null
+++ b/src/ae-firefly.css
@@ -0,0 +1,284 @@
+/*
+ * AE Firefly — "Shiny serenity, like a firefly."
+ * Aether Platform / One Sky IT, LLC — Design System Theme
+ *
+ * Aesthetic vision (Scott Idem, 2026-03-06):
+ * Calm, focused, softly luminous. A modern Section 508–compliant
+ * theme for One Sky IT, LLC. Inspired by bioluminescence —
+ * the brief, cool glow of a firefly against a deep, serene night.
+ *
+ * Color philosophy:
+ * Primary — Luminescent Teal: cool bioluminescent shimmer
+ * Secondary — Warm Amber-Gold: the firefly's warm body glow
+ * Tertiary — Night-Sky Indigo: depth and serenity of the dark
+ * Surface — Moonlit Slate: barely-cool neutral; crisp white
+ * (light mode) → deep midnight blue-grey (dark mode)
+ *
+ * Section 508 / WCAG 2.1 AA:
+ * - Body text (surface-950 on surface-50 light): >15:1 contrast ✓
+ * - Primary-filled buttons meet ≥3:1 for interactive components ✓
+ * - Contrast crossover points calculated per OKLCH approximate RL
+ *
+ * Based on: Skeleton v4 theme CSS variable structure
+ * Reference: src/ae-osit-default.css, Nouveau preset
+ */
+
+[data-theme='AE_Firefly'] {
+ --text-scaling: 1.067;
+ --base-font-color: var(--color-surface-950);
+ --base-font-color-dark: var(--color-surface-50);
+ --base-font-family: system-ui, sans-serif;
+ --base-font-size: inherit;
+ --base-line-height: inherit;
+ --base-font-weight: normal;
+ --base-font-style: normal;
+ --base-letter-spacing: 0em;
+ --heading-font-color: inherit;
+ --heading-font-color-dark: inherit;
+ --heading-font-family: inherit;
+ --heading-font-weight: bold;
+ --heading-font-style: normal;
+ --heading-letter-spacing: inherit;
+
+ /* Anchors: teal in light, lighter teal in dark */
+ --anchor-font-color: var(--color-primary-600);
+ --anchor-font-color-dark: var(--color-primary-300);
+ --anchor-font-family: inherit;
+ --anchor-font-size: inherit;
+ --anchor-line-height: inherit;
+ --anchor-font-weight: inherit;
+ --anchor-font-style: inherit;
+ --anchor-letter-spacing: inherit;
+ --anchor-text-decoration: none;
+ --anchor-text-decoration-hover: underline;
+ --anchor-text-decoration-active: none;
+ --anchor-text-decoration-focus: none;
+
+ --spacing: 0.25rem;
+ --radius-base: 0.375rem;
+ --radius-container: 0.875rem; /* slightly more rounded than default for modern feel */
+ --default-border-width: 1px;
+ --default-divide-width: 1px;
+ --default-ring-width: 1px;
+
+ --body-background-color: var(--color-surface-50);
+ --body-background-color-dark: var(--color-surface-950);
+
+ /* ===================================================================
+ * PRIMARY — Luminescent Firefly Teal
+ * Hue: ~184°. Reads as "living" cool teal — the shimmer of
+ * bioluminescence on still water. Professional and distinctive.
+ * At 500 (L≈50%): sufficient contrast with primary-50 text (≥4:1).
+ * =================================================================== */
+ --color-primary-50: oklch(96.5% 0.025 192deg);
+ --color-primary-100: oklch(91.0% 0.050 190deg);
+ --color-primary-200: oklch(84.5% 0.078 188deg);
+ --color-primary-300: oklch(76.5% 0.105 186deg);
+ --color-primary-400: oklch(67.5% 0.125 185deg);
+ --color-primary-500: oklch(50.5% 0.130 184deg);
+ --color-primary-600: oklch(44.0% 0.125 183deg);
+ --color-primary-700: oklch(37.5% 0.115 182deg);
+ --color-primary-800: oklch(30.5% 0.105 181deg);
+ --color-primary-900: oklch(23.5% 0.090 180deg);
+ --color-primary-950: oklch(16.0% 0.075 179deg);
+ --color-primary-contrast-dark: var(--color-primary-950);
+ --color-primary-contrast-light: var(--color-primary-50);
+ --color-primary-contrast-50: var(--color-primary-contrast-dark);
+ --color-primary-contrast-100: var(--color-primary-contrast-dark);
+ --color-primary-contrast-200: var(--color-primary-contrast-dark);
+ --color-primary-contrast-300: var(--color-primary-contrast-dark);
+ --color-primary-contrast-400: var(--color-primary-contrast-dark);
+ --color-primary-contrast-500: var(--color-primary-contrast-light);
+ --color-primary-contrast-600: var(--color-primary-contrast-light);
+ --color-primary-contrast-700: var(--color-primary-contrast-light);
+ --color-primary-contrast-800: var(--color-primary-contrast-light);
+ --color-primary-contrast-900: var(--color-primary-contrast-light);
+ --color-primary-contrast-950: var(--color-primary-contrast-light);
+
+ /* ===================================================================
+ * SECONDARY — Warm Amber-Gold (firefly body glow)
+ * Hue: ~90°. The warm, soft luminescence of the firefly itself —
+ * complements the cool teal primary. Used for secondary actions,
+ * badges, and highlights.
+ * =================================================================== */
+ --color-secondary-50: oklch(97.5% 0.060 102deg);
+ --color-secondary-100: oklch(93.5% 0.095 100deg);
+ --color-secondary-200: oklch(89.5% 0.128 98deg);
+ --color-secondary-300: oklch(85.5% 0.155 95deg);
+ --color-secondary-400: oklch(81.0% 0.170 93deg);
+ --color-secondary-500: oklch(76.0% 0.170 90deg);
+ --color-secondary-600: oklch(68.5% 0.160 87deg);
+ --color-secondary-700: oklch(60.5% 0.145 85deg);
+ --color-secondary-800: oklch(52.0% 0.130 83deg);
+ --color-secondary-900: oklch(43.5% 0.110 81deg);
+ --color-secondary-950: oklch(35.0% 0.090 79deg);
+ --color-secondary-contrast-dark: var(--color-secondary-950);
+ --color-secondary-contrast-light: var(--color-secondary-50);
+ --color-secondary-contrast-50: var(--color-secondary-contrast-dark);
+ --color-secondary-contrast-100: var(--color-secondary-contrast-dark);
+ --color-secondary-contrast-200: var(--color-secondary-contrast-dark);
+ --color-secondary-contrast-300: var(--color-secondary-contrast-dark);
+ --color-secondary-contrast-400: var(--color-secondary-contrast-dark);
+ --color-secondary-contrast-500: var(--color-secondary-contrast-dark);
+ --color-secondary-contrast-600: var(--color-secondary-contrast-light);
+ --color-secondary-contrast-700: var(--color-secondary-contrast-light);
+ --color-secondary-contrast-800: var(--color-secondary-contrast-light);
+ --color-secondary-contrast-900: var(--color-secondary-contrast-light);
+ --color-secondary-contrast-950: var(--color-secondary-contrast-light);
+
+ /* ===================================================================
+ * TERTIARY — Night-Sky Indigo
+ * Hue: ~277°. The deep violet of a clear night — creates depth
+ * and calm serenity. Used for accents, tags, and tertiary elements.
+ * =================================================================== */
+ --color-tertiary-50: oklch(95.5% 0.042 283deg);
+ --color-tertiary-100: oklch(89.0% 0.068 281deg);
+ --color-tertiary-200: oklch(81.5% 0.092 279deg);
+ --color-tertiary-300: oklch(73.5% 0.112 278deg);
+ --color-tertiary-400: oklch(65.0% 0.132 277deg);
+ --color-tertiary-500: oklch(55.5% 0.142 276deg);
+ --color-tertiary-600: oklch(48.5% 0.138 275deg);
+ --color-tertiary-700: oklch(41.5% 0.128 274deg);
+ --color-tertiary-800: oklch(34.5% 0.112 273deg);
+ --color-tertiary-900: oklch(27.5% 0.098 272deg);
+ --color-tertiary-950: oklch(20.0% 0.082 271deg);
+ --color-tertiary-contrast-dark: var(--color-tertiary-950);
+ --color-tertiary-contrast-light: var(--color-tertiary-50);
+ --color-tertiary-contrast-50: var(--color-tertiary-contrast-dark);
+ --color-tertiary-contrast-100: var(--color-tertiary-contrast-dark);
+ --color-tertiary-contrast-200: var(--color-tertiary-contrast-dark);
+ --color-tertiary-contrast-300: var(--color-tertiary-contrast-dark);
+ --color-tertiary-contrast-400: var(--color-tertiary-contrast-dark);
+ --color-tertiary-contrast-500: var(--color-tertiary-contrast-light);
+ --color-tertiary-contrast-600: var(--color-tertiary-contrast-light);
+ --color-tertiary-contrast-700: var(--color-tertiary-contrast-light);
+ --color-tertiary-contrast-800: var(--color-tertiary-contrast-light);
+ --color-tertiary-contrast-900: var(--color-tertiary-contrast-light);
+ --color-tertiary-contrast-950: var(--color-tertiary-contrast-light);
+
+ /* ===================================================================
+ * SUCCESS — Bioluminescent Green
+ * Hue: ~152°. Clean, readable success state. Consistent with
+ * other OSIT themes for recognizable semantic color meaning.
+ * =================================================================== */
+ --color-success-50: oklch(95.77% 0.05 152.69deg);
+ --color-success-100: oklch(91.59% 0.06 152.00deg);
+ --color-success-200: oklch(87.45% 0.08 152.08deg);
+ --color-success-300: oklch(83.57% 0.09 150.85deg);
+ --color-success-400: oklch(79.47% 0.11 150.71deg);
+ --color-success-500: oklch(75.38% 0.12 149.99deg);
+ --color-success-600: oklch(67.65% 0.11 149.94deg);
+ --color-success-700: oklch(59.71% 0.09 150.42deg);
+ --color-success-800: oklch(51.74% 0.08 150.24deg);
+ --color-success-900: oklch(43.20% 0.06 151.12deg);
+ --color-success-950: oklch(34.20% 0.04 151.44deg);
+ --color-success-contrast-dark: var(--color-success-950);
+ --color-success-contrast-light: var(--color-success-50);
+ --color-success-contrast-50: var(--color-success-contrast-dark);
+ --color-success-contrast-100: var(--color-success-contrast-dark);
+ --color-success-contrast-200: var(--color-success-contrast-dark);
+ --color-success-contrast-300: var(--color-success-contrast-dark);
+ --color-success-contrast-400: var(--color-success-contrast-dark);
+ --color-success-contrast-500: var(--color-success-contrast-dark);
+ --color-success-contrast-600: var(--color-success-contrast-dark);
+ --color-success-contrast-700: var(--color-success-contrast-light);
+ --color-success-contrast-800: var(--color-success-contrast-light);
+ --color-success-contrast-900: var(--color-success-contrast-light);
+ --color-success-contrast-950: var(--color-success-contrast-light);
+
+ /* ===================================================================
+ * WARNING — Amber Orange
+ * Hue: ~65°. Warm amber — shares family with secondary gold but
+ * distinctly "caution" readable. Consistent OSIT semantic palette.
+ * =================================================================== */
+ --color-warning-50: oklch(97.5% 0.065 78deg);
+ --color-warning-100: oklch(93.5% 0.090 75deg);
+ --color-warning-200: oklch(89.5% 0.120 73deg);
+ --color-warning-300: oklch(85.5% 0.145 70deg);
+ --color-warning-400: oklch(81.5% 0.160 67deg);
+ --color-warning-500: oklch(77.0% 0.165 65deg);
+ --color-warning-600: oklch(69.5% 0.155 64deg);
+ --color-warning-700: oklch(61.5% 0.140 63deg);
+ --color-warning-800: oklch(53.5% 0.125 62deg);
+ --color-warning-900: oklch(45.0% 0.105 61deg);
+ --color-warning-950: oklch(37.0% 0.088 60deg);
+ --color-warning-contrast-dark: var(--color-warning-950);
+ --color-warning-contrast-light: var(--color-warning-50);
+ --color-warning-contrast-50: var(--color-warning-contrast-dark);
+ --color-warning-contrast-100: var(--color-warning-contrast-dark);
+ --color-warning-contrast-200: var(--color-warning-contrast-dark);
+ --color-warning-contrast-300: var(--color-warning-contrast-dark);
+ --color-warning-contrast-400: var(--color-warning-contrast-dark);
+ --color-warning-contrast-500: var(--color-warning-contrast-dark);
+ --color-warning-contrast-600: var(--color-warning-contrast-dark);
+ --color-warning-contrast-700: var(--color-warning-contrast-light);
+ --color-warning-contrast-800: var(--color-warning-contrast-light);
+ --color-warning-contrast-900: var(--color-warning-contrast-light);
+ --color-warning-contrast-950: var(--color-warning-contrast-light);
+
+ /* ===================================================================
+ * ERROR — Soft Coral/Rose
+ * Hue: ~22°. Clear error indication without being harsh. Consistent
+ * cross-theme for recognizable semantic meaning.
+ * =================================================================== */
+ --color-error-50: oklch(95.0% 0.040 18deg);
+ --color-error-100: oklch(88.0% 0.070 20deg);
+ --color-error-200: oklch(80.0% 0.105 21deg);
+ --color-error-300: oklch(72.0% 0.140 22deg);
+ --color-error-400: oklch(64.5% 0.170 23deg);
+ --color-error-500: oklch(57.5% 0.195 24deg);
+ --color-error-600: oklch(51.5% 0.182 25deg);
+ --color-error-700: oklch(45.5% 0.165 26deg);
+ --color-error-800: oklch(39.5% 0.148 27deg);
+ --color-error-900: oklch(33.0% 0.128 28deg);
+ --color-error-950: oklch(26.5% 0.108 29deg);
+ --color-error-contrast-dark: var(--color-error-950);
+ --color-error-contrast-light: var(--color-error-50);
+ --color-error-contrast-50: var(--color-error-contrast-dark);
+ --color-error-contrast-100: var(--color-error-contrast-dark);
+ --color-error-contrast-200: var(--color-error-contrast-dark);
+ --color-error-contrast-300: var(--color-error-contrast-dark);
+ --color-error-contrast-400: var(--color-error-contrast-light);
+ --color-error-contrast-500: var(--color-error-contrast-light);
+ --color-error-contrast-600: var(--color-error-contrast-light);
+ --color-error-contrast-700: var(--color-error-contrast-light);
+ --color-error-contrast-800: var(--color-error-contrast-light);
+ --color-error-contrast-900: var(--color-error-contrast-light);
+ --color-error-contrast-950: var(--color-error-contrast-light);
+
+ /* ===================================================================
+ * SURFACE — Moonlit Serenity
+ * Barely-cool neutral (hue 215-232°, chroma 0.003-0.030).
+ * This is the "shiny serenity" — the surfaces feel like clean
+ * moonlit paper in light mode and a calm midnight sky in dark mode.
+ * The chroma is intentionally extremely low; it reads as neutral grey
+ * but with an imperceptible cool quality that lifts the whole palette.
+ *
+ * 50 → body-bg light: nearly pure white, faintest cool whisper
+ * 950 → body-bg dark: deep midnight slate with subtle cool depth
+ * =================================================================== */
+ --color-surface-50: oklch(99.2% 0.003 220deg);
+ --color-surface-100: oklch(97.0% 0.006 217deg);
+ --color-surface-200: oklch(93.5% 0.009 215deg);
+ --color-surface-300: oklch(88.5% 0.012 213deg);
+ --color-surface-400: oklch(81.5% 0.015 212deg);
+ --color-surface-500: oklch(70.5% 0.016 215deg);
+ --color-surface-600: oklch(59.0% 0.018 218deg);
+ --color-surface-700: oklch(47.5% 0.020 222deg);
+ --color-surface-800: oklch(35.5% 0.022 226deg);
+ --color-surface-900: oklch(24.5% 0.025 229deg);
+ --color-surface-950: oklch(15.5% 0.028 233deg);
+ --color-surface-contrast-dark: var(--color-surface-950);
+ --color-surface-contrast-light: var(--color-surface-50);
+ --color-surface-contrast-50: var(--color-surface-contrast-dark);
+ --color-surface-contrast-100: var(--color-surface-contrast-dark);
+ --color-surface-contrast-200: var(--color-surface-contrast-dark);
+ --color-surface-contrast-300: var(--color-surface-contrast-dark);
+ --color-surface-contrast-400: var(--color-surface-contrast-dark);
+ --color-surface-contrast-500: var(--color-surface-contrast-dark);
+ --color-surface-contrast-600: var(--color-surface-contrast-light);
+ --color-surface-contrast-700: var(--color-surface-contrast-light);
+ --color-surface-contrast-800: var(--color-surface-contrast-light);
+ --color-surface-contrast-900: var(--color-surface-contrast-light);
+ --color-surface-contrast-950: var(--color-surface-contrast-light);
+}
diff --git a/src/app.css b/src/app.css
index 52d6132b..24445e4e 100644
--- a/src/app.css
+++ b/src/app.css
@@ -27,6 +27,7 @@
@import './ae-osit-default.css';
@import './ae-c-lci.css';
@import './ae-c-idaa-light.css';
+@import './ae-firefly.css';
@source '../node_modules/@skeletonlabs/skeleton-svelte/dist';
diff --git a/src/lib/app_components/e_app_theme.svelte b/src/lib/app_components/e_app_theme.svelte
index f6054d48..8b51de41 100644
--- a/src/lib/app_components/e_app_theme.svelte
+++ b/src/lib/app_components/e_app_theme.svelte
@@ -100,6 +100,7 @@ if ($ae_loc.app_cfg.theme_mode == 'light') {
+
diff --git a/src/lib/stores/ae_stores.ts b/src/lib/stores/ae_stores.ts
index 989df159..d76a5888 100644
--- a/src/lib/stores/ae_stores.ts
+++ b/src/lib/stores/ae_stores.ts
@@ -76,7 +76,7 @@ const ae_app_local_data_defaults: key_val = {
theme: 'light',
theme_mode: 'light',
- theme_name: 'nouveau', // wintry
+ theme_name: 'AE_Firefly', // "Shiny serenity, like a firefly." — OSIT default 2026
iframe: false,
// disable_sys_header: false,