/* ============================================================================
   IOLTO Design System — colors_and_type.css
   ----------------------------------------------------------------------------
   Source of truth for CSS tokens: colors, type, spacing, radii, shadows, motion.
   Mirrors the brand core defined in iolto-brand-core.html.
   ========================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* ---- Brand colors (invariant) ---- */
  --iolto-brand-blue:  #0060C8;
  --iolto-brand-navy:  #0C1424;
  --iolto-brand-white: #FCFCFC;

  /* ---- Fonts ---- */
  --iolto-font-display: 'Manrope', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --iolto-font-body:    'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --iolto-font-mono:    'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* ---- Type scale ---- */
  --iolto-text-xs:  12px;
  --iolto-text-sm:  13px;
  --iolto-text-base:14px;
  --iolto-text-md:  15px;
  --iolto-text-lg:  18px;
  --iolto-text-xl:  22px;
  --iolto-text-2xl: 28px;
  --iolto-text-3xl: 36px;
  --iolto-text-4xl: 44px;
  --iolto-text-5xl: 56px;

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

  /* ---- Radii ---- */
  --iolto-radius-xs:   4px;
  --iolto-radius-sm:   8px;
  --iolto-radius-md:   12px;
  --iolto-radius-lg:   16px;
  --iolto-radius-xl:   18px; /* IOLTO signature on main cards */
  --iolto-radius-2xl:  24px;
  --iolto-radius-full: 999px;

  /* ---- Motion ---- */
  --iolto-ease:          cubic-bezier(0.4, 0, 0.2, 1);
  --iolto-duration-fast: 120ms;
  --iolto-duration:      200ms;
  --iolto-duration-slow: 320ms;
}

/* ============================================================================
   LIGHT MODE (default)
   ========================================================================= */
:root,
[data-theme="light"] {
  --iolto-bg-base:     #F5F7FB;
  --iolto-bg-surface:  #FFFFFF;
  --iolto-bg-elevated: #F8FBFF;
  --iolto-bg-muted:    #FBFDFF;

  --iolto-text-primary:   #0F172A;
  --iolto-text-secondary: #475569;
  --iolto-text-tertiary:  #64748B;
  --iolto-text-disabled:  #94A3B8;

  --iolto-border-subtle:  #EEF2F7;
  --iolto-border-default: #DBE3EE;
  --iolto-border-strong:  #C1CCDB;

  --iolto-primary:        #0060C8;
  --iolto-primary-hover:  #0052AB;
  --iolto-primary-soft:   rgba(0, 96, 200, 0.10);
  --iolto-primary-softer: rgba(0, 96, 200, 0.04);
  --iolto-on-primary:     #FCFCFC;

  --iolto-success:         #16A34A;
  --iolto-success-soft:    rgba(22, 163, 74, 0.10);
  --iolto-success-on-soft: #166534;
  --iolto-warning:         #D97706;
  --iolto-warning-soft:    rgba(217, 119, 6, 0.10);
  --iolto-warning-on-soft: #92400E;
  --iolto-danger:          #DC2626;
  --iolto-danger-soft:     rgba(220, 38, 38, 0.10);
  --iolto-danger-on-soft:  #991B1B;
  --iolto-info:            #0060C8;
  --iolto-info-soft:       rgba(0, 96, 200, 0.08);
  --iolto-info-on-soft:    #0052AB;

  --iolto-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --iolto-shadow-md: 0 10px 30px rgba(15, 23, 42, 0.06);
  --iolto-shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.10);
}

/* ============================================================================
   DARK MODE
   ========================================================================= */
[data-theme="dark"] {
  --iolto-bg-base:     #0C1424;
  --iolto-bg-surface:  #1A2035;
  --iolto-bg-elevated: #232B44;
  --iolto-bg-muted:    #141C2F;

  --iolto-text-primary:   #FCFCFC;
  --iolto-text-secondary: rgba(252, 252, 252, 0.72);
  --iolto-text-tertiary:  rgba(252, 252, 252, 0.50);
  --iolto-text-disabled:  rgba(252, 252, 252, 0.32);

  --iolto-border-subtle:  rgba(252, 252, 252, 0.08);
  --iolto-border-default: rgba(252, 252, 252, 0.12);
  --iolto-border-strong:  rgba(252, 252, 252, 0.24);

  --iolto-primary:        #378ADD;
  --iolto-primary-hover:  #4A9BFF;
  --iolto-primary-soft:   rgba(55, 138, 221, 0.16);
  --iolto-primary-softer: rgba(55, 138, 221, 0.06);
  --iolto-on-primary:     #FCFCFC;

  --iolto-success:         #22C55E;
  --iolto-success-soft:    rgba(34, 197, 94, 0.16);
  --iolto-success-on-soft: #86EFAC;
  --iolto-warning:         #F59E0B;
  --iolto-warning-soft:    rgba(245, 158, 11, 0.16);
  --iolto-warning-on-soft: #FCD34D;
  --iolto-danger:          #EF4444;
  --iolto-danger-soft:     rgba(239, 68, 68, 0.16);
  --iolto-danger-on-soft:  #FCA5A5;
  --iolto-info:            #378ADD;
  --iolto-info-soft:       rgba(55, 138, 221, 0.16);
  --iolto-info-on-soft:    #93C5FD;

  --iolto-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.24);
  --iolto-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.32);
  --iolto-shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.40);
}

/* ============================================================================
   SEMANTIC TYPE STYLES
   ========================================================================= */
body {
  font-family: var(--iolto-font-body);
  font-size: var(--iolto-text-base);
  line-height: 1.55;
  color: var(--iolto-text-primary);
  background: var(--iolto-bg-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 { font-family: var(--iolto-font-display); color: var(--iolto-text-primary); margin: 0; letter-spacing: -0.02em; }

h1, .iolto-h1 { font-size: 48px; font-weight: 800; line-height: 1.1;  letter-spacing: -0.025em; }
h2, .iolto-h2 { font-size: 28px; font-weight: 700; line-height: 1.2;  letter-spacing: -0.02em; }
h3, .iolto-h3 { font-size: 22px; font-weight: 700; line-height: 1.3; }
h4, .iolto-h4 { font-size: 18px; font-weight: 600; line-height: 1.4; }

p, .iolto-body { font-size: 16px; line-height: 1.7; color: var(--iolto-text-secondary); margin: 0 0 var(--iolto-space-3); }

.iolto-lead  { font-size: var(--iolto-text-lg); line-height: 1.6; color: var(--iolto-text-secondary); }
.iolto-small { font-size: 13px; line-height: 1.5; color: var(--iolto-text-tertiary); }

.iolto-eyebrow {
  font-family: var(--iolto-font-body);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--iolto-primary);
  font-weight: 600;
}

code, .iolto-code {
  font-family: var(--iolto-font-mono);
  font-size: 12px;
  background: var(--iolto-bg-muted);
  padding: 2px 6px;
  border-radius: var(--iolto-radius-xs);
  color: var(--iolto-primary);
  border: 1px solid var(--iolto-border-subtle);
}