/* =============================================================================
   DESIGN TOKENS
   Foundation layer for consistent design system
   
   📖 Documentação: docs/design-system/tokens.md
   📋 ADR 0001: docs/adr/0001-design-tokens.md
   
   NOTA DE MIGRAÇÃO:
   Tokens existentes devem ser mantidos para compatibilidade durante migração.
   Novos componentes devem usar APENAS tokens definidos aqui.
   Evitar valores hardcoded - sempre preferir var(--token-name).
   ============================================================================= */

:root {
  /* Brand Color Scale */
  --color-primary-50: #f0fdf4;
  --color-primary-100: #dcfce7;
  --color-primary-200: #bbf7d0;
  --color-primary-300: #86efac;
  --color-primary-400: #4ade80;
  --color-primary-500: #22c55e;
  --color-primary-600: #16a34a;
  --color-primary-700: #15803d;
  --color-primary-800: #166534;
  --color-primary-900: #14532d;
  
  /* Neutral Palette */
  --color-neutral-0: #ffffff;
  --color-neutral-50: #f8fafc;
  --color-neutral-100: #f1f5f9;
  --color-neutral-200: #e2e8f0;
  --color-neutral-300: #cbd5e1;
  --color-neutral-400: #94a3b8;
  --color-neutral-500: #64748b;
  --color-neutral-600: #475569;
  --color-neutral-700: #334155;
  --color-neutral-800: #1e293b;
  --color-neutral-900: #0f172a;
  
  /* Semantic Colors */
  --color-success-50: #f0fdf4;
  --color-success-500: #22c55e;
  --color-success-700: #15803d;
  
  --color-warning-50: #fffbeb;
  --color-warning-500: #f59e0b;
  --color-warning-700: #d97706;
  
  --color-error-50: #fef2f2;
  --color-error-500: #ef4444;
  --color-error-700: #dc2626;
  
  --color-info-50: #eff6ff;
  --color-info-500: #3b82f6;
  --color-info-700: #1d4ed8;
  
  /* Urgency Colors for countdown - Legacy (to be deprecated) */
  --color-urgent-high: #dc2626;    /* red-600 */
  --color-urgent-medium: #f59e0b;  /* amber-500 */
  --color-urgent-low: #22c55e;     /* green-500 */
  
  /* Countdown Badge State Tokens */
  /* Comfortable state - >5 dias */
  --countdown-comfortable-bg: #ecfdf5;      /* emerald-50 */
  --countdown-comfortable-fg: #047857;      /* emerald-800 */
  --countdown-comfortable-border: #6ee7b7;  /* emerald-200 */
  
  /* Attention state - 3 a 5 dias */
  --countdown-attention-bg: #fff7ed;        /* orange-50 */
  --countdown-attention-fg: #9a3412;        /* orange-800 */
  --countdown-attention-border: #fdba74;    /* orange-300 */
  
  /* Critical state - <3 dias */
  --countdown-critical-bg: #fee2e2;         /* rose/red-100 */
  --countdown-critical-fg: #b91c1c;         /* red-700 */
  --countdown-critical-border: #ef4444;     /* red-500 */
  
  /* Expired state - campanha encerrada */
  --countdown-expired-bg: var(--color-neutral-800);
  --countdown-expired-fg: var(--color-neutral-0);
  --countdown-expired-border: var(--color-neutral-700);
  
  /* Started state - evento em andamento */
  --countdown-started-bg: var(--color-info-50);
  --countdown-started-fg: var(--color-info-700);
  --countdown-started-border: var(--color-info-500);
  
  /* Background & Surface */
  --color-bg-primary: var(--color-neutral-50);
  --color-bg-secondary: var(--color-neutral-0);
  --color-surface: var(--color-neutral-0);
  --color-surface-hover: var(--color-neutral-50);
  --color-border: var(--color-neutral-200);
  --color-border-focus: var(--color-primary-500);
  
  /* Text Colors */
  --color-text-primary: var(--color-neutral-900);
  --color-text-secondary: var(--color-neutral-600);
  --color-text-muted: var(--color-neutral-500);
  --color-text-inverse: var(--color-neutral-0);
  
  /* Spacing Scale (rem based) */
  --space-0: 0;
  --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 */
  
  /* Border Radius */
  --radius-none: 0;
  --radius-sm: 0.125rem;
  --radius-base: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-3xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-base: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
  --transition-transform: transform var(--transition-fast);
  --transition-colors: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  
  /* Typography Scale */
  --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 */
  
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  
  /* Z-index Scale */
  --z-dropdown: 10;
  --z-sticky: 20;
  --z-fixed: 30;
  --z-modal-backdrop: 40;
  --z-modal: 50;
  --z-popover: 60;
  --z-tooltip: 70;
  --z-toast: 80;
}

/* Dark Mode Overrides */
@media (prefers-color-scheme: dark) {
  :root {
    /* Background & Surface - Dark */
    --color-bg-primary: var(--color-neutral-900);
    --color-bg-secondary: var(--color-neutral-800);
    --color-surface: var(--color-neutral-800);
    --color-surface-hover: var(--color-neutral-700);
    --color-border: var(--color-neutral-700);
    --color-border-focus: var(--color-primary-400);
    
    /* Text Colors - Dark */
    --color-text-primary: var(--color-neutral-50);
    --color-text-secondary: var(--color-neutral-300);
    --color-text-muted: var(--color-neutral-400);
    --color-text-inverse: var(--color-neutral-900);
    
    /* Adjust primary colors for dark mode */
    --color-primary-500: #4ade80;
    --color-primary-600: #22c55e;
    
    /* Countdown Badge State Tokens - Dark Mode */
    --countdown-comfortable-bg: #064e3b;     /* emerald-950 */
    --countdown-comfortable-fg: #6ee7b7;     /* emerald-200 */
    --countdown-comfortable-border: #047857; /* emerald-800 */
    
    --countdown-attention-bg: #7c2d12;       /* orange-900 */
    --countdown-attention-fg: #fdba74;       /* orange-300 */
    --countdown-attention-border: #ea580c;   /* orange-600 */
    
    --countdown-critical-bg: #7f1d1d;        /* red-900 */
    --countdown-critical-fg: #fecaca;        /* red-200 */
    --countdown-critical-border: #dc2626;    /* red-600 */
    
    --countdown-expired-bg: var(--color-neutral-700);
    --countdown-expired-fg: var(--color-neutral-200);
    --countdown-expired-border: var(--color-neutral-600);
    
    --countdown-started-bg: #172554;         /* blue-950 */
    --countdown-started-fg: #bfdbfe;         /* blue-200 */
    --countdown-started-border: #1d4ed8;     /* blue-600 */
  }
}

/* Manual dark mode class override */
.dark {
  --color-bg-primary: var(--color-neutral-900);
  --color-bg-secondary: var(--color-neutral-800);
  --color-surface: var(--color-neutral-800);
  --color-surface-hover: var(--color-neutral-700);
  --color-border: var(--color-neutral-700);
  --color-border-focus: var(--color-primary-400);
  
  --color-text-primary: var(--color-neutral-50);
  --color-text-secondary: var(--color-neutral-300);
  --color-text-muted: var(--color-neutral-400);
  --color-text-inverse: var(--color-neutral-900);
  
  --color-primary-500: #4ade80;
  --color-primary-600: #22c55e;
  
  /* Countdown Badge State Tokens - Dark Mode */
  --countdown-comfortable-bg: #064e3b;
  --countdown-comfortable-fg: #6ee7b7;
  --countdown-comfortable-border: #047857;
  
  --countdown-attention-bg: #7c2d12;
  --countdown-attention-fg: #fdba74;
  --countdown-attention-border: #ea580c;
  
  --countdown-critical-bg: #7f1d1d;
  --countdown-critical-fg: #fecaca;
  --countdown-critical-border: #dc2626;
  
  --countdown-expired-bg: var(--color-neutral-700);
  --countdown-expired-fg: var(--color-neutral-200);
  --countdown-expired-border: var(--color-neutral-600);
  
  --countdown-started-bg: #172554;
  --countdown-started-fg: #bfdbfe;
  --countdown-started-border: #1d4ed8;
}