/* ============================================================
   PREOLOGI — DESIGN TOKENS
   Design System Custom Properties
   ============================================================ */

:root {

  /* ---------- COLOUR PALETTE ---------- */

  /* Primary brand */
  --preologi-colour-primary:        #A040E0;
  --preologi-colour-primary-dark:   #6A5AE0;
  --preologi-colour-primary-light:  #C855E8;

  /* Accent */
  --preologi-colour-accent:         #EE4BE4;
  --preologi-colour-accent-warm:    #FF6F61;
  --preologi-colour-accent-blue:    #80C8F8;

  /* Secondary / complementary */
  --preologi-colour-secondary:      #4F46E5;

  /* Ink & neutrals */
  --preologi-colour-ink:            #0E0B1A;
  --preologi-colour-ink-soft:       #2A2440;
  --preologi-colour-muted:          #6B6680;
  --preologi-colour-line:           rgba(14, 11, 26, 0.08);
  --preologi-colour-bg:             #FFFFFF;
  --preologi-colour-bg-soft:        #FAF8FF;
  --preologi-colour-bg-subtle:      #F4F2F7;

  /* Semantic */
  --preologi-colour-success:        #0D904F;
  --preologi-colour-success-bg:     #ECFDF3;
  --preologi-colour-warning:        #D97706;
  --preologi-colour-warning-bg:     #FFFBEB;
  --preologi-colour-error:          #DC2626;
  --preologi-colour-error-bg:       #FEF2F2;
  --preologi-colour-info:           #2563EB;
  --preologi-colour-info-bg:        #EFF6FF;

  /* Dark mode surfaces */
  --preologi-colour-dark:           #0E0B1A;
  --preologi-colour-dark-muted:     rgba(255, 255, 255, 0.72);
  --preologi-colour-dark-line:      rgba(255, 255, 255, 0.12);

  /* Gradients */
  --preologi-gradient-primary:      linear-gradient(135deg, #A040E0 0%, #6A5AE0 50%, #4F46E5 100%);
  --preologi-gradient-text:         linear-gradient(90deg, #A040E0 0%, #EE4BE4 50%, #FF6F61 100%);
  --preologi-gradient-button:       linear-gradient(95deg, #A040E0 0%, #C855E8 40%, #80C8F8 100%);
  --preologi-gradient-register:     radial-gradient(closest-side, rgba(238, 75, 228, 0.18), transparent 70%);

  /* ---------- TYPOGRAPHY ---------- */

  /* Font families */
  --preologi-font-heading:          "Helvetica Now Display", "Helvetica Neue", "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --preologi-font-body:             "Helvetica Now Display", "Helvetica Neue", "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --preologi-font-mono:             ui-monospace, Menlo, Monaco, "Cascadia Mono", "Segoe UI Mono", "Roboto Mono", monospace;

  /* Type scale (modular ratio ~1.25) */
  --preologi-text-xs:               0.75rem;    /* 12px */
  --preologi-text-sm:               0.8125rem;  /* 13px */
  --preologi-text-base:             0.9375rem;  /* 15px */
  --preologi-text-lg:               1.0625rem;  /* 17px */
  --preologi-text-xl:               1.25rem;    /* 20px */
  --preologi-text-2xl:              1.5rem;     /* 24px */
  --preologi-text-3xl:              clamp(1.75rem, 2.5vw + 0.5rem, 2.25rem);
  --preologi-text-4xl:              clamp(2.0rem, 4vw + 0.5rem, 3.6rem);

  /* Line heights */
  --preologi-line-tight:            1.05;
  --preologi-line-snug:             1.15;
  --preologi-line-normal:           1.55;
  --preologi-line-relaxed:          1.65;

  /* Letter spacing */
  --preologi-tracking-wide:         0.06em;
  --preologi-tracking-wider:        0.10em;
  --preologi-tracking-widest:       0.16em;
  --preologi-tracking-widest-2:     0.18em;

  /* ---------- SPACING SYSTEM (4px / 8px base) ---------- */

  --preologi-space-1:   0.25rem;  /* 4px */
  --preologi-space-2:   0.5rem;   /* 8px */
  --preologi-space-3:   0.75rem;  /* 12px */
  --preologi-space-4:   1rem;     /* 16px */
  --preologi-space-5:   1.25rem;  /* 20px */
  --preologi-space-6:   1.5rem;   /* 24px */
  --preologi-space-7:   1.75rem;  /* 28px */
  --preologi-space-8:   2rem;     /* 32px */
  --preologi-space-9:   2.25rem;  /* 36px */
  --preologi-space-10:  2.5rem;   /* 40px */
  --preologi-space-12:  3rem;     /* 48px */
  --preologi-space-16:  4rem;     /* 64px */
  --preologi-space-20:  5rem;     /* 80px */
  --preologi-space-24:  6rem;     /* 96px */
  --preologi-space-32:  8rem;     /* 128px */
  --preologi-space-40:  10rem;    /* 160px */
  --preologi-space-48:  12rem;    /* 192px */

  /* ---------- BREAKPOINTS ---------- */

  --preologi-bp-sm:     480px;
  --preologi-bp-md:     768px;
  --preologi-bp-lg:     1024px;
  --preologi-bp-xl:     1240px;
  --preologi-bp-2xl:    1440px;

  /* ---------- LAYOUT ---------- */

  --preologi-max-width:          var(--preologi-bp-xl);
  --preologi-gutter:             clamp(20px, 4vw, 56px);
  --preologi-grid-gap:           clamp(20px, 3vw, 32px);

  /* ---------- BORDER RADIUS ---------- */

  --preologi-radius-sm:   4px;
  --preologi-radius-md:   8px;
  --preologi-radius-lg:   16px;
  --preologi-radius-xl:   24px;
  --preologi-radius-2xl:  32px;
  --preologi-radius-card: 32px;
  --preologi-radius-pill: 999px;

  /* ---------- SHADOWS ---------- */

  --preologi-shadow-1:    0 1px 2px rgba(14,11,26,0.04), 0 8px 24px rgba(14,11,26,0.06);
  --preologi-shadow-2:    0 4px 12px rgba(138,43,226,0.10), 0 24px 56px rgba(14,11,26,0.10);
  --preologi-shadow-3:    0 12px 30px rgba(140,60,220,0.28);
  --preologi-shadow-focus: 0 0 0 3px rgba(160, 64, 224, 0.35);

  /* ---------- Z-INDEX SCALE ---------- */

  --preologi-z-dropdown:     100;
  --preologi-z-sticky:       200;
  --preologi-z-overlay:      300;
  --preologi-z-modal:        400;
  --preologi-z-toast:        500;

  /* ---------- TRANSITIONS ---------- */

  --preologi-transition-fast:    150ms ease;
  --preologi-transition-base:    250ms ease;
  --preologi-transition-slow:    350ms ease;

  /* ---------- NAV ---------- */

  --preologi-nav-height:        72px;
  --preologi-nav-bg:            transparent;
  --preologi-nav-bg-scrolled:   rgba(255, 255, 255, 0.88);
  --preologi-nav-blur:          saturate(160%) blur(18px);

}