@layer base {
/* _global.css — TurboFlows Design Tokens (HEY Calm + Fizzy Vibrant) */

:root {
  /* ─── Spacing Scale ─── */
  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  /* Legacy spacing aliases */
  --space-inline: var(--space-4);
  --space-block: var(--space-4);
  --space-inline-half: var(--space-2);
  --space-block-half: var(--space-2);
  --space-inline-double: var(--space-8);
  --space-block-double: var(--space-8);

  /* ─── Typography ─── */
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "SF Mono", Menlo, monospace;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  --letter-spacing-tight: -0.025em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.025em;

  /* ─── OKLCH Palette — Northwest Navy (Light Mode) ─── */
  /* Values sampled from reference screenshots; see docs plan for provenance. */
  --color-ink:           oklch(0.153 0.050 279);
  --color-ink-subtle:    oklch(0.400 0.030 270);
  --color-ink-muted:     oklch(0.600 0.020 265);
  --color-canvas:        oklch(0.967 0.005 250);
  --color-canvas-alt:    oklch(0.953 0.006 250);
  --color-canvas-raised: oklch(1.0 0 0);
  --color-border:        oklch(0.910 0.008 250);
  --color-border-strong: oklch(0.820 0.012 250);

  /* ─── Accents ─── */
  --color-primary:       oklch(0.318 0.109 256);
  --color-primary-hover: oklch(0.260 0.100 256);
  --color-primary-soft:  oklch(0.930 0.030 256);
  --color-primary-muted: oklch(0.510 0.074 255);  /* links, outlined button text */
  --color-primary-text:  var(--color-primary);    /* split only diverges in dark */
  --color-on-primary:    oklch(1.0 0 0);

  /* Mint — reserved for terminal completion only (Resolve, scenario complete) */
  --color-mint:          oklch(0.850 0.085 165);
  --color-on-mint:       var(--color-ink);

  /* Semantics: two-tier — strong for text/borders, soft for pill fills */
  /* Text that sits ON a strong semantic fill. White in light; ink in dark,
     because the dark semantic tokens are LIGHT fills (L 0.80), not dark ones. */
  --color-on-negative:   oklch(1.0 0 0);
  --color-on-positive:   oklch(1.0 0 0);
  --color-on-warning:    oklch(1.0 0 0);
  --color-negative:      oklch(0.500 0.140 25);
  --color-negative-soft: oklch(0.884 0.036 18);
  --color-positive:      oklch(0.450 0.100 165);
  --color-positive-soft: oklch(0.880 0.050 165);
  --color-warning:       oklch(0.450 0.100 75);
  --color-warning-soft:  oklch(0.900 0.050 80);

  --color-backdrop:      oklch(0.10 0.01 250 / 0.6);
  --color-backdrop-light: oklch(0.10 0.01 250 / 0.3);

  /* Legacy alias — still used for backgrounds/borders, so it tracks primary */
  --color-link: var(--color-primary);

  /* ─── Step Type Hues ─── */
  --hue-question: 250;
  --hue-action:   145;
  --hue-message:  290;
  --hue-escalate:  25;
  --hue-resolve:  160;
  --hue-subflow:  310;
  --hue-form:      45;

  /* Legacy step color aliases */
  --color-step-question: var(--hue-question);
  --color-step-action:   var(--hue-action);
  --color-step-message:  var(--hue-message);
  --color-step-escalate: var(--hue-escalate);
  --color-step-resolve:  var(--hue-resolve);
  --color-step-subflow:  var(--hue-subflow);
  --color-step-form:     var(--hue-form);

  /* ─── Composable Step Colors ─── */
  /* Stored as SCALARS, not composed colors. A composed token like
     `--step-bg: oklch(.88 .05 var(--step-hue))` declared on :root resolves
     against :root's (undefined) --step-hue and inherits as invalid, so
     descendants that set --step-hue never re-resolve it. That trap is why
     this codebase previously wrote inline oklch() literals everywhere.
     Scalars have no var() indirection, so they inherit cleanly; the
     composition happens per-element in the `*` rule below. */
  --step-bg-l: 0.88;    --step-bg-c: 0.05;
  --step-border-l: 0.86; --step-border-c: 0.04;
  --step-text-l: 0.35;  --step-text-c: 0.10;
  --step-dot-l: 0.55;   --step-dot-c: 0.12;
  --step-solid-l: 0.45; --step-solid-c: 0.11;
  --step-on-solid: oklch(1.0 0 0);

  /* ─── Shadows (Dual-Layer) ─── */
  --shadow-sm: 0 0 0 0 transparent;   /* flat: cards rely on a 1px hairline border */
  --shadow:    0 2px 6px oklch(0.25 0.02 250 / 0.07), 0 1px 2px oklch(0.25 0.02 250 / 0.04);
  --shadow-lg: 0 4px 16px oklch(0.25 0.02 250 / 0.10), 0 2px 4px oklch(0.25 0.02 250 / 0.05);
  --shadow-xl: 0 8px 32px oklch(0.25 0.02 250 / 0.12), 0 4px 8px oklch(0.25 0.02 250 / 0.06);

  /* ─── Borders & Radii ─── */
  --radius-sm:   0.25rem;
  --radius:      0.375rem;
  --radius-md:   0.375rem;   /* interactive elements: buttons, inputs */
  --radius-lg:   0.5rem;
  --radius-xl:   0.75rem;
  --radius-full: 9999px;

  /* ─── Focus ─── */
  --focus-ring: 2px solid var(--color-primary);
  --focus-ring-offset: 2px;

  /* ─── Motion ─── */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-snap:   120ms;
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;

  /* ─── Z-Index ─── */
  --z-dropdown: 10;
  --z-nav: 20;
  --z-modal: 30;
  --z-tooltip: 40;
  --z-toast: 50;
}

/* ─── Dark Mode ─── */
[data-theme="dark"] {
  color-scheme: dark;
  --color-ink:           oklch(0.92 0.010 250);
  --color-ink-subtle:    oklch(0.72 0.010 250);
  --color-ink-muted:     oklch(0.50 0.010 250);
  --color-canvas:        oklch(0.13 0.015 250);
  --color-canvas-alt:    oklch(0.16 0.012 250);
  --color-canvas-raised: oklch(0.19 0.010 250);
  --color-border:        oklch(0.26 0.015 250);
  --color-border-strong: oklch(0.35 0.020 250);
  --color-primary:       oklch(0.70 0.140 256);  /* fill, white text  */
  --color-primary-hover: oklch(0.76 0.130 256);
  --color-primary-soft:  oklch(0.25 0.060 256);
  --color-primary-muted: oklch(0.72 0.090 255);
  --color-primary-text:  oklch(0.78 0.140 256);  /* link on canvas    */
  --color-on-primary:    oklch(1.0 0 0);
  --color-mint:          oklch(0.850 0.085 165);
  --color-on-mint:       oklch(0.13 0.015 250);
  --color-on-negative:   oklch(0.13 0.015 250);
  --color-on-positive:   oklch(0.13 0.015 250);
  --color-on-warning:    oklch(0.13 0.015 250);
  --color-negative:      oklch(0.80 0.100 25);
  --color-negative-soft: oklch(0.28 0.060 25);
  --color-positive:      oklch(0.80 0.100 165);
  --color-positive-soft: oklch(0.28 0.060 165);
  --color-warning:       oklch(0.80 0.100 80);
  --color-warning-soft:  oklch(0.28 0.060 80);
  --color-backdrop:      oklch(0.05 0.01 250 / 0.7);
  --color-backdrop-light: oklch(0.05 0.01 250 / 0.4);
  --step-bg-l: 0.28;    --step-bg-c: 0.06;
  --step-border-l: 0.34; --step-border-c: 0.06;
  --step-text-l: 0.80;  --step-text-c: 0.10;
  --step-dot-l: 0.74;   --step-dot-c: 0.12;
  --step-solid-l: 0.78; --step-solid-c: 0.12;
  --step-on-solid: oklch(0.13 0.015 250);
  --shadow-sm: 0 0 0 0 transparent;
  --shadow:    0 2px 6px oklch(0.05 0.02 250 / 0.28), 0 1px 2px oklch(0.05 0.02 250 / 0.16);
  --shadow-lg: 0 4px 16px oklch(0.05 0.02 250 / 0.40), 0 2px 4px oklch(0.05 0.02 250 / 0.20);
  --shadow-xl: 0 8px 32px oklch(0.05 0.02 250 / 0.48), 0 4px 8px oklch(0.05 0.02 250 / 0.24);
}


/* ─── System Preference Fallback ─── */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --color-ink:           oklch(0.92 0.010 250);
    --color-ink-subtle:    oklch(0.72 0.010 250);
    --color-ink-muted:     oklch(0.50 0.010 250);
    --color-canvas:        oklch(0.13 0.015 250);
    --color-canvas-alt:    oklch(0.16 0.012 250);
    --color-canvas-raised: oklch(0.19 0.010 250);
    --color-border:        oklch(0.26 0.015 250);
    --color-border-strong: oklch(0.35 0.020 250);
    --color-primary:       oklch(0.70 0.140 256);  /* fill, white text  */
    --color-primary-hover: oklch(0.76 0.130 256);
    --color-primary-soft:  oklch(0.25 0.060 256);
    --color-primary-muted: oklch(0.72 0.090 255);
    --color-primary-text:  oklch(0.78 0.140 256);  /* link on canvas    */
    --color-on-primary:    oklch(1.0 0 0);
    --color-mint:          oklch(0.850 0.085 165);
    --color-on-mint:       oklch(0.13 0.015 250);
    --color-on-negative:   oklch(0.13 0.015 250);
    --color-on-positive:   oklch(0.13 0.015 250);
    --color-on-warning:    oklch(0.13 0.015 250);
    --color-negative:      oklch(0.80 0.100 25);
    --color-negative-soft: oklch(0.28 0.060 25);
    --color-positive:      oklch(0.80 0.100 165);
    --color-positive-soft: oklch(0.28 0.060 165);
    --color-warning:       oklch(0.80 0.100 80);
    --color-warning-soft:  oklch(0.28 0.060 80);
    --color-backdrop:      oklch(0.05 0.01 250 / 0.7);
    --color-backdrop-light: oklch(0.05 0.01 250 / 0.4);
    --step-bg-l: 0.28;    --step-bg-c: 0.06;
    --step-border-l: 0.34; --step-border-c: 0.06;
    --step-text-l: 0.80;  --step-text-c: 0.10;
    --step-dot-l: 0.74;   --step-dot-c: 0.12;
    --step-solid-l: 0.78; --step-solid-c: 0.12;
    --step-on-solid: oklch(0.13 0.015 250);
    --shadow-sm: 0 0 0 0 transparent;
    --shadow:    0 2px 6px oklch(0.05 0.02 250 / 0.28), 0 1px 2px oklch(0.05 0.02 250 / 0.16);
    --shadow-lg: 0 4px 16px oklch(0.05 0.02 250 / 0.40), 0 2px 4px oklch(0.05 0.02 250 / 0.20);
    --shadow-xl: 0 8px 32px oklch(0.05 0.02 250 / 0.48), 0 4px 8px oklch(0.05 0.02 250 / 0.24);
  }
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    color-scheme: light;
  }
}

/* Composed per-element so --step-hue set on any element (or inherited from an
   ancestor) resolves here rather than at :root. Must not move into :root. */
* {
  --step-bg:     oklch(var(--step-bg-l) var(--step-bg-c) var(--step-hue, 250));
  --step-border: oklch(var(--step-border-l) var(--step-border-c) var(--step-hue, 250));
  --step-text:   oklch(var(--step-text-l) var(--step-text-c) var(--step-hue, 250));
  --step-dot:    oklch(var(--step-dot-l) var(--step-dot-c) var(--step-hue, 250));
  --step-solid:  oklch(var(--step-solid-l) var(--step-solid-c) var(--step-hue, 250));
}

/* ─── Keyboard Shortcut Hints ─── */
kbd {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  padding: 0.1rem 0.35rem;
  background: var(--color-canvas-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  box-shadow: 0 1px 0 var(--color-border-strong);
  line-height: 1.4;
  vertical-align: middle;
}

/* ─── Reduced Motion ─── */
@media (prefers-reduced-motion: reduce) {
  :root {
    --ease-spring: ease;
    --ease-out: ease;
    --ease-in-out: ease;
    --duration-snap: 0ms;
    --duration-fast: 0ms;
    --duration-normal: 0ms;
    --duration-slow: 0ms;
  }
}
}

/* ─── Lexxy Rich Text Editor Dark Mode (html[] beats Lexxy's :root specificity) ─── */
html[data-theme="dark"] {
  --lexxy-color-ink:          oklch(0.92 0.01 245);
  --lexxy-color-ink-medium:   oklch(0.65 0.01 245);
  --lexxy-color-ink-light:    oklch(0.50 0.01 245);
  --lexxy-color-ink-lighter:  oklch(0.30 0.015 245);
  --lexxy-color-ink-lightest: oklch(0.22 0.01 245);
  --lexxy-color-ink-inverted: oklch(0.13 0.015 245);
  --lexxy-color-canvas:       oklch(0.19 0.01 245);
  --lexxy-color-text:         oklch(0.92 0.01 245);
  --lexxy-color-text-subtle:  oklch(0.65 0.01 245);
  --lexxy-color-accent-dark:  oklch(0.78 0.14 256);
  --lexxy-color-accent-medium:oklch(0.70 0.14 256);
  --lexxy-color-accent-light: oklch(0.30 0.06 256);
  --lexxy-color-accent-lightest: oklch(0.25 0.04 256);
  --lexxy-color-link:         oklch(0.78 0.14 256);
  --lexxy-color-selected:     oklch(0.25 0.04 256);
  --lexxy-color-selected-hover: oklch(0.30 0.06 256);
  --lexxy-color-selected-dark:oklch(0.70 0.14 256);
  --lexxy-color-code-bg:      oklch(0.16 0.012 245);
  --lexxy-color-table-header-bg: oklch(0.22 0.01 245);
  --lexxy-color-table-cell-border: oklch(0.30 0.015 245);
  --lexxy-shadow: 0 2px 8px oklch(0.05 0.02 245 / 0.40);
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) {
    --lexxy-color-ink:          oklch(0.92 0.01 245);
    --lexxy-color-ink-medium:   oklch(0.65 0.01 245);
    --lexxy-color-ink-light:    oklch(0.50 0.01 245);
    --lexxy-color-ink-lighter:  oklch(0.30 0.015 245);
    --lexxy-color-ink-lightest: oklch(0.22 0.01 245);
    --lexxy-color-ink-inverted: oklch(0.13 0.015 245);
    --lexxy-color-canvas:       oklch(0.19 0.01 245);
    --lexxy-color-text:         oklch(0.92 0.01 245);
    --lexxy-color-text-subtle:  oklch(0.65 0.01 245);
    --lexxy-color-accent-dark:  oklch(0.78 0.14 256);
    --lexxy-color-accent-medium:oklch(0.70 0.14 256);
    --lexxy-color-accent-light: oklch(0.30 0.06 256);
    --lexxy-color-accent-lightest: oklch(0.25 0.04 256);
    --lexxy-color-link:         oklch(0.78 0.14 256);
    --lexxy-color-selected:     oklch(0.25 0.04 256);
    --lexxy-color-selected-hover: oklch(0.30 0.06 256);
    --lexxy-color-selected-dark:oklch(0.70 0.14 256);
    --lexxy-color-code-bg:      oklch(0.16 0.012 245);
    --lexxy-color-table-header-bg: oklch(0.22 0.01 245);
    --lexxy-color-table-cell-border: oklch(0.30 0.015 245);
    --lexxy-shadow: 0 2px 8px oklch(0.05 0.02 245 / 0.40);
  }
}