/* ============================================
   AXIO IA - Design Tokens / CSS Variables
   ============================================ */

:root {
  /* ==========================================
     COLORS - Paleta baseada na logo
     ========================================== */
  
  /* Background Colors */
  --color-bg-primary: #0F172A;      /* Azul marinho escuro - fundo principal */
  --color-bg-secondary: #1E293B;    /* Azul escuro - cards e seções alternadas */
  --color-bg-tertiary: #0D1321;     /* Azul mais escuro - variação */
  --color-bg-card: rgba(30, 41, 59, 0.6); /* Cards com transparência */
  
  /* Accent Colors - Inspirados na logo */
  --color-accent-blue: #3B82F6;     /* Azul vibrante */
  --color-accent-cyan: #06B6D4;     /* Ciano/Turquesa */
  --color-accent-teal: #14B8A6;     /* Verde-água */
  --color-accent-indigo: #6366F1;   /* Índigo para variação */
  
  /* Text Colors */
  --color-text-primary: #F8FAFC;    /* Branco - texto principal */
  --color-text-secondary: #94A3B8;  /* Cinza claro - texto secundário */
  --color-text-muted: #64748B;      /* Cinza médio - texto desabilitado */
  --color-text-accent: #22D3EE;     /* Ciano claro - destaques */
  
  /* Semantic Colors */
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error: #EF4444;
  --color-info: #3B82F6;
  
  /* Border Colors */
  --color-border: rgba(148, 163, 184, 0.2);
  --color-border-accent: rgba(6, 182, 212, 0.4);
  
  /* ==========================================
     GRADIENTS - Inspirados na logo
     ========================================== */
  --gradient-primary: linear-gradient(135deg, #3B82F6 0%, #06B6D4 100%);
  --gradient-secondary: linear-gradient(135deg, #6366F1 0%, #3B82F6 100%);
  --gradient-accent: linear-gradient(135deg, #06B6D4 0%, #14B8A6 100%);
  --gradient-hero: linear-gradient(180deg, #0F172A 0%, #1E293B 100%);
  --gradient-card: linear-gradient(145deg, rgba(30, 41, 59, 0.8) 0%, rgba(15, 23, 42, 0.9) 100%);
  --gradient-glow: radial-gradient(ellipse at center, rgba(6, 182, 212, 0.15) 0%, transparent 70%);
  
  /* ==========================================
     TYPOGRAPHY
     ========================================== */
  --font-family-primary: 'Sora', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-family-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Font Sizes - Mobile First (rem) */
  --font-size-xs: 0.75rem;      /* 12px */
  --font-size-sm: 0.875rem;     /* 14px */
  --font-size-base: 1rem;       /* 16px */
  --font-size-lg: 1.125rem;     /* 18px */
  --font-size-xl: 1.25rem;      /* 20px */
  --font-size-2xl: 1.5rem;      /* 24px */
  --font-size-3xl: 1.875rem;    /* 30px */
  --font-size-4xl: 2.25rem;     /* 36px */
  --font-size-5xl: 3rem;        /* 48px */
  --font-size-6xl: 3.75rem;     /* 60px */
  --font-size-7xl: 4.5rem;      /* 72px */
  
  /* Font Weights */
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  
  /* Line Heights */
  --line-height-tight: 1.1;
  --line-height-snug: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;
  
  /* Letter Spacing */
  --letter-spacing-tight: -0.025em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.025em;
  --letter-spacing-wider: 0.05em;
  --letter-spacing-widest: 0.1em;
  
  /* ==========================================
     SPACING
     ========================================== */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */
  --space-32: 8rem;     /* 128px */
  
  /* ==========================================
     LAYOUT
     ========================================== */
  --container-max-width: 1280px;
  --container-padding: var(--space-4);
  --section-padding-y: var(--space-16);
  --header-height: 80px;
  
  /* ==========================================
     BORDERS & RADIUS
     ========================================== */
  --border-width: 1px;
  --border-width-2: 2px;
  
  --radius-sm: 0.375rem;   /* 6px */
  --radius-md: 0.5rem;     /* 8px */
  --radius-lg: 0.75rem;    /* 12px */
  --radius-xl: 1rem;       /* 16px */
  --radius-2xl: 1.5rem;    /* 24px */
  --radius-full: 9999px;
  
  /* ==========================================
     SHADOWS
     ========================================== */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 40px rgba(6, 182, 212, 0.3);
  --shadow-glow-blue: 0 0 40px rgba(59, 130, 246, 0.3);
  
  /* ==========================================
     TRANSITIONS
     ========================================== */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
  --transition-slower: 500ms ease;
  
  /* Cubic bezier for smooth animations */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out-expo: cubic-bezier(0.87, 0, 0.13, 1);
  
  /* ==========================================
     Z-INDEX SCALE
     ========================================== */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;
}

/* ==========================================
   RESPONSIVE BREAKPOINTS (via media queries)
   ========================================== */
/* 
   sm: 640px
   md: 768px
   lg: 1024px
   xl: 1280px
   2xl: 1536px
*/