/* ==========================================================================
   TypesetOK (TOK) — Design Tokens (Editorial Technology)
   Default: Dark Mode (מצב לילה כברירת מחדל)
   ========================================================================== */

:root {
  /* Color Palette — Premium Dark Editorial Mode (DEFAULT) */
  --color-bg-base: #0B0E14;
  --color-bg-paper: #111622;
  --color-bg-surface: #171E2E;
  --color-bg-subtle: #1D263A;
  --color-bg-elevated: #242F46;
  
  --color-ink-primary: #F0F4FA;
  --color-ink-secondary: #CBD5E1;
  --color-ink-muted: #8E9BB0;
  --color-ink-faint: #5B6880;

  /* Brand Palette from TypesetOK Identity */
  --color-brand-blue: #2563EB;
  --color-brand-blue-hover: #3B82F6;
  --color-brand-blue-light: rgba(37, 99, 235, 0.16);
  --color-brand-blue-glow: rgba(37, 99, 235, 0.25);
  
  --color-brand-navy: #E2E8F0;
  --color-brand-navy-dark: #07090D;
  --color-brand-navy-light: #60A5FA;
  
  --color-accent-gold: #D9A04B;
  --color-accent-gold-light: rgba(217, 160, 75, 0.15);
  --color-accent-gold-hover: #F59E0B;

  /* Prepress Ink Separations (Fogra 39 / ISO 15930) */
  --color-cmyk-cyan: #00B4D8;
  --color-cmyk-magenta: #F72585;
  --color-cmyk-yellow: #FFD166;
  --color-cmyk-black: #06080C;

  /* Borders & Editorial Rule Lines */
  --color-border-subtle: #1F283C;
  --color-border-medium: #2C3852;
  --color-border-strong: #4B5E82;
  --color-guide-line: rgba(255, 255, 255, 0.08);
  --color-guide-active: #3B82F6;
  --color-grid-overlay: rgba(59, 130, 246, 0.05);

  /* Typography Families */
  --font-serif: 'Frank Ruhl Libre', 'David Libre', 'David', 'Times New Roman', serif;
  --font-sans: 'Heebo', 'Assistant', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;

  /* Fluid Typographic Scale — Responsive clamp */
  --font-size-2xs: clamp(0.7rem, 0.65rem + 0.25vw, 0.75rem);
  --font-size-xs:  clamp(0.78rem, 0.74rem + 0.25vw, 0.84rem);
  --font-size-sm:  clamp(0.88rem, 0.84rem + 0.25vw, 0.94rem);
  --font-size-base: clamp(0.96rem, 0.92rem + 0.3vw, 1.06rem);
  --font-size-lg:  clamp(1.12rem, 1.05rem + 0.4vw, 1.22rem);
  --font-size-xl:  clamp(1.3rem, 1.18rem + 0.7vw, 1.5rem);
  --font-size-2xl: clamp(1.55rem, 1.35rem + 1vw, 1.95rem);
  --font-size-3xl: clamp(1.9rem, 1.6rem + 1.6vw, 2.5rem);
  --font-size-4xl: clamp(2.3rem, 1.85rem + 2.4vw, 3.4rem);

  /* Line Heights */
  --line-height-tight: 1.15;
  --line-height-heading: 1.25;
  --line-height-snug: 1.35;
  --line-height-base: 1.6;
  --line-height-loose: 1.75;

  /* Spacing Scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* Architectural Radii */
  --radius-xs: 3px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-pill: 9999px;

  /* Paper Shadows */
  --shadow-subtle: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-paper: 0 4px 16px rgba(0, 0, 0, 0.45);
  --shadow-floating: 0 16px 48px rgba(0, 0, 0, 0.65);
  --shadow-glow: 0 0 24px rgba(37, 99, 235, 0.35);

  /* Motion Timing & Easing */
  --motion-fast: 160ms cubic-bezier(0.16, 1, 0.3, 1);
  --motion-normal: 260ms cubic-bezier(0.16, 1, 0.3, 1);
  --motion-slow: 420ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout Widths */
  --container-max: 1240px;
  --container-editorial: 960px;
  --container-narrow: 740px;
  --header-height: 68px;

  /* Z-Index Layers */
  --z-base: 1;
  --z-guidelines: 5;
  --z-content: 10;
  --z-sticky: 100;
  --z-drawer: 200;
  --z-a11y-widget: 400;
  --z-modal-backdrop: 500;
  --z-modal: 600;
  --z-toast: 1000;
}

/* Light Mode Variant (Active when user clicks Day/Night toggle) */
[data-theme="light"] {
  --color-bg-base: #F8F6F0;
  --color-bg-paper: #FCFBF9;
  --color-bg-surface: #FFFFFF;
  --color-bg-subtle: #F1EEE6;
  --color-bg-elevated: #FFFFFF;

  --color-ink-primary: #12161F;
  --color-ink-secondary: #3D4554;
  --color-ink-muted: #647087;
  --color-ink-faint: #9AA4B5;

  --color-brand-blue: #1D63ED;
  --color-brand-blue-hover: #1551CA;
  --color-brand-blue-light: #EFF5FF;
  --color-brand-blue-glow: rgba(29, 99, 237, 0.15);

  --color-brand-navy: #16234B;
  --color-brand-navy-dark: #0D1527;
  --color-brand-navy-light: #233468;

  --color-accent-gold: #B4833E;
  --color-accent-gold-light: #FBF6EB;

  --color-border-subtle: #E5E1D6;
  --color-border-medium: #D1CCBF;
  --color-border-strong: #16234B;
  --color-guide-line: rgba(22, 35, 75, 0.12);

  --shadow-paper: 0 2px 8px -2px rgba(22, 35, 75, 0.06), 0 10px 24px -4px rgba(22, 35, 75, 0.07);
  --shadow-floating: 0 4px 12px rgba(22, 35, 75, 0.06), 0 20px 48px -10px rgba(22, 35, 75, 0.14);
}