/**
 * KnowBox Brand Variables
 * Dark-first. Indigo / Violet / Cyan palette.
 */

:root {
  --brand-name: 'KnowBox';

  /* Primary — Indigo */
  --brand-primary:       #6366f1;
  --brand-primary-hover: #4f46e5;
  --brand-primary-light: #818cf8;
  --brand-primary-dark:  #4338ca;

  /* Secondary — Violet */
  --brand-secondary:       #8b5cf6;
  --brand-secondary-hover: #7c3aed;
  --brand-secondary-light: #a78bfa;

  /* Tertiary — Cyan */
  --brand-tertiary:      #06b6d4;
  --brand-tertiary-dark: #0891b2;
  --brand-accent:        #22d3ee;

  /* Backgrounds — dark */
  --brand-bg-primary:   #09090f;
  --brand-bg-secondary: #0d0d16;
  --brand-bg-hero:      #07070e;
  --brand-bg-card:      #111119;
  --brand-footer-bg:    #060609;

  /* Text */
  --brand-text-primary:   #f1f5f9;
  --brand-text-secondary: #94a3b8;
  --brand-text-muted:     #475569;

  /* Borders */
  --brand-border:       rgba(99, 102, 241, 0.15);
  --brand-border-focus: rgba(99, 102, 241, 0.5);

  /* Header */
  --brand-header-bg:     rgba(9, 9, 15, 0.85);
  --brand-header-border: rgba(99, 102, 241, 0.12);

  /* Gradients */
  --brand-gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --brand-gradient-hero:    linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #06b6d4 100%);
  --brand-gradient-glow:    radial-gradient(ellipse at center, rgba(99,102,241,0.15) 0%, transparent 70%);

  /* Shadows */
  --brand-shadow-sm:  0 1px 3px rgba(0,0,0,0.4);
  --brand-shadow-md:  0 4px 16px rgba(0,0,0,0.5);
  --brand-shadow-lg:  0 8px 32px rgba(0,0,0,0.6);
  --brand-shadow-glow: 0 0 40px rgba(99,102,241,0.25);

  /* Transitions */
  --brand-transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}