/**
 * Brain Developer - Design Tokens
 * ================================
 * Este arquivo contém todas as variáveis globais do projeto.
 * Cores, tipografia, espaçamentos, sombras e outras configurações base.
 * 
 * IMPORTANTE: Não adicione estilos de componentes aqui.
 * Este arquivo é exclusivamente para definição de tokens de design.
 */

:root {
    /* ==========================================
       PALETA DE CORES BASE
       ========================================== */

    /* Cores Primárias */
    --color-primary-50: #eff6ff;
    --color-primary-100: #dbeafe;
    --color-primary-200: #bfdbfe;
    --color-primary-300: #93c5fd;
    --color-primary-400: #60a5fa;
    --color-primary-500: #3b82f6;
    --color-primary-600: #2563eb;
    --color-primary-700: #1d4ed8;
    --color-primary-800: #1e40af;
    --color-primary-900: #1e3a8a;

    /* Cores Secundárias (Roxo) */
    --color-secondary-50: #faf5ff;
    --color-secondary-100: #f3e8ff;
    --color-secondary-200: #e9d5ff;
    --color-secondary-300: #d8b4fe;
    --color-secondary-400: #c084fc;
    --color-secondary-500: #a855f7;
    --color-secondary-600: #9333ea;
    --color-secondary-700: #7c3aed;
    --color-secondary-800: #6b21a8;
    --color-secondary-900: #581c87;

    /* Cores de Destaque (Ciano) */
    --color-accent-50: #ecfeff;
    --color-accent-100: #cffafe;
    --color-accent-200: #a5f3fc;
    --color-accent-300: #67e8f9;
    --color-accent-400: #22d3ee;
    --color-accent-500: #06b6d4;
    --color-accent-600: #0891b2;
    --color-accent-700: #0e7490;
    --color-accent-800: #155e75;
    --color-accent-900: #164e63;

    /* Cores de Sucesso (Verde) */
    --color-success-50: #ecfdf5;
    --color-success-100: #d1fae5;
    --color-success-200: #a7f3d0;
    --color-success-300: #6ee7b7;
    --color-success-400: #34d399;
    --color-success-500: #10b981;
    --color-success-600: #059669;
    --color-success-700: #047857;
    --color-success-800: #065f46;
    --color-success-900: #064e3b;

    /* Cores de Alerta (Amarelo/Laranja) */
    --color-warning-50: #fffbeb;
    --color-warning-100: #fef3c7;
    --color-warning-200: #fde68a;
    --color-warning-300: #fcd34d;
    --color-warning-400: #fbbf24;
    --color-warning-500: #f59e0b;
    --color-warning-600: #d97706;
    --color-warning-700: #b45309;
    --color-warning-800: #92400e;
    --color-warning-900: #78350f;

    /* Cores de Erro (Vermelho) */
    --color-error-50: #fef2f2;
    --color-error-100: #fee2e2;
    --color-error-200: #fecaca;
    --color-error-300: #fca5a5;
    --color-error-400: #f87171;
    --color-error-500: #ef4444;
    --color-error-600: #dc2626;
    --color-error-700: #b91c1c;
    --color-error-800: #991b1b;
    --color-error-900: #7f1d1d;

    /* Cores Neutras */
    --color-neutral-50: #f9fafb;
    --color-neutral-100: #f3f4f6;
    --color-neutral-200: #e5e7eb;
    --color-neutral-300: #d1d5db;
    --color-neutral-400: #9ca3af;
    --color-neutral-500: #6b7280;
    --color-neutral-600: #4b5563;
    --color-neutral-700: #374151;
    --color-neutral-800: #1f2937;
    --color-neutral-900: #111827;

    /* ==========================================
       CORES SEMÂNTICAS
       ========================================== */

    /* Texto - Otimizado para contraste WCAG AA */
    --color-text-primary: var(--color-neutral-800);
    --color-text-secondary: var(--color-neutral-600);
    --color-text-tertiary: var(--color-neutral-500);
    --color-text-muted: var(--color-neutral-400);
    --color-text-inverse: #ffffff;
    --color-text-link: var(--color-primary-600);
    --color-text-link-hover: var(--color-primary-700);

    /* Fundos - Hierarquia clara de superfícies */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: var(--color-neutral-50);
    --color-bg-tertiary: var(--color-neutral-100);
    --color-bg-elevated: #ffffff;
    --color-bg-dark: var(--color-neutral-800);
    --color-bg-darker: var(--color-neutral-900);

    /* Bordas - Sutis mas perceptíveis */
    --color-border-subtle: var(--color-neutral-100);
    --color-border-light: var(--color-neutral-200);
    --color-border-default: var(--color-neutral-300);
    --color-border-dark: var(--color-neutral-400);
    --color-border-focus: var(--color-primary-500);

    /* Superfícies interativas */
    --color-surface-primary: var(--color-bg-primary);
    --color-surface-secondary: var(--color-bg-secondary);
    --color-surface-hover: var(--color-neutral-50);
    --color-surface-active: var(--color-neutral-100);

    /* ==========================================
       GRADIENTES
       ========================================== */

    /* Gradientes Base */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #06b6d4 100%);

    /* Gradientes por Página */
    --gradient-home: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-start: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-frontend: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-backend: linear-gradient(
        135deg,
        #065f46 0%,
        #047857 25%,
        #059669 50%,
        #0c4a6e 75%,
        #0891b2 100%
    );
    --gradient-fullstack: linear-gradient(
        135deg,
        #8b5cf6 0%,
        #6366f1 25%,
        #3b82f6 50%,
        #06b6d4 75%,
        #10b981 100%
    );

    /* Gradientes de Fundo */
    --gradient-bg-light: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    --gradient-bg-hero: linear-gradient(135deg, rgba(99, 102, 241, 0.9), rgba(139, 92, 246, 0.9));

    /* Gradientes de Seções */
    --gradient-section-blue: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    --gradient-section-purple: linear-gradient(135deg, #f3e8ff 0%, #e9d5ff 100%);
    --gradient-section-green: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
    --gradient-section-yellow: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    --gradient-section-red: linear-gradient(135deg, #fecaca 0%, #fca5a5 100%);
    --gradient-section-cyan: linear-gradient(135deg, #e0f2fe 0%, #b3e5fc 100%);

    /* ==========================================
       TIPOGRAFIA
       ========================================== */

    /* Font Family */
    --font-family-primary:
        'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-family-mono: 'Fira Code', 'JetBrains Mono', 'Source Code Pro', Consolas, monospace;

    /* Font Sizes */
    --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 Weights */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;

    /* Line Heights */
    --line-height-tight: 1.25;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    --line-height-loose: 1.75;

    /* Letter Spacing */
    --letter-spacing-tight: -0.025em;
    --letter-spacing-normal: 0;
    --letter-spacing-wide: 0.025em;
    --letter-spacing-wider: 0.05em;

    /* ==========================================
       ESPAÇAMENTOS
       ========================================== */

    --spacing-0: 0;
    --spacing-1: 0.25rem; /* 4px */
    --spacing-2: 0.5rem; /* 8px */
    --spacing-3: 0.75rem; /* 12px */
    --spacing-4: 1rem; /* 16px */
    --spacing-5: 1.25rem; /* 20px */
    --spacing-6: 1.5rem; /* 24px */
    --spacing-8: 2rem; /* 32px */
    --spacing-10: 2.5rem; /* 40px */
    --spacing-12: 3rem; /* 48px */
    --spacing-16: 4rem; /* 64px */
    --spacing-20: 5rem; /* 80px */
    --spacing-24: 6rem; /* 96px */

    /* ==========================================
       BORDAS E ARREDONDAMENTOS
       ========================================== */

    --radius-none: 0;
    --radius-sm: 0.25rem; /* 4px */
    --radius-md: 0.5rem; /* 8px */
    --radius-lg: 0.75rem; /* 12px */
    --radius-xl: 1rem; /* 16px */
    --radius-2xl: 1.25rem; /* 20px */
    --radius-3xl: 1.5rem; /* 24px */
    --radius-full: 9999px;

    --border-width-thin: 1px;
    --border-width-default: 2px;
    --border-width-thick: 4px;

    /* ==========================================
       SOMBRAS
       ========================================== */

    /* Sombras neutras - Mais suaves para melhor UI */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 2px 4px 0 rgba(0, 0, 0, 0.06), 0 1px 2px 0 rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 8px -2px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 12px 20px -4px rgba(0, 0, 0, 0.1), 0 4px 8px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 32px -8px rgba(0, 0, 0, 0.12), 0 8px 16px -4px rgba(0, 0, 0, 0.06);
    --shadow-2xl: 0 32px 48px -16px rgba(0, 0, 0, 0.18);

    /* Sombra de elevação suave para cards */
    --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04), 0 4px 16px rgba(0, 0, 0, 0.06);
    --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04);

    /* Sombra interna para inputs focados */
    --shadow-focus: 0 0 0 3px rgba(59, 130, 246, 0.15);

    /* Sombras Coloridas */
    --shadow-primary: 0 10px 30px rgba(102, 126, 234, 0.4);
    --shadow-primary-lg: 0 15px 40px rgba(102, 126, 234, 0.6);
    --shadow-success: 0 10px 30px rgba(16, 185, 129, 0.4);
    --shadow-accent: 0 10px 30px rgba(6, 182, 212, 0.4);
    --shadow-secondary: 0 10px 30px rgba(240, 147, 251, 0.4);

    /* ==========================================
       TRANSIÇÕES E ANIMAÇÕES
       ========================================== */

    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
    --transition-smooth: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 400ms cubic-bezier(0.68, -0.55, 0.265, 1.55);

    /* Durações de animação */
    --duration-fast: 150ms;
    --duration-normal: 300ms;
    --duration-slow: 500ms;
    --duration-slower: 800ms;

    /* ==========================================
       BREAKPOINTS (para referência em JS)
       ========================================== */

    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
    --breakpoint-2xl: 1536px;

    /* ==========================================
       Z-INDEX
       ========================================== */

    --z-base: 0;
    --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;

    /* ==========================================
       CONTAINER
       ========================================== */

    --container-max-width: 1200px;
    --container-padding: var(--spacing-8);
    --container-padding-mobile: var(--spacing-4);
}

/* ==========================================
   RESET E BASE
   ========================================== */

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==========================================
   CLASSES UTILITÁRIAS DE CORES
   ========================================== */

/* Cores de texto */
.text-primary {
    color: var(--color-primary-600);
}
.text-secondary {
    color: var(--color-secondary-600);
}
.text-accent {
    color: var(--color-accent-600);
}
.text-success {
    color: var(--color-success-600);
}
.text-warning {
    color: var(--color-warning-600);
}
.text-error {
    color: var(--color-error-600);
}
.text-muted {
    color: var(--color-text-secondary);
}
.text-light {
    color: var(--color-text-inverse);
}
.text-dark {
    color: var(--color-neutral-800);
}

/* Cores de fundo */
.bg-primary {
    background-color: var(--color-primary-600);
}
.bg-secondary {
    background-color: var(--color-secondary-600);
}
.bg-accent {
    background-color: var(--color-accent-600);
}
.bg-success {
    background-color: var(--color-success-600);
}
.bg-warning {
    background-color: var(--color-warning-600);
}
.bg-error {
    background-color: var(--color-error-600);
}
.bg-light {
    background-color: var(--color-bg-primary);
}
.bg-dark {
    background-color: var(--color-bg-dark);
}

/* Gradientes */
.bg-gradient-primary {
    background: var(--gradient-primary);
}
.bg-gradient-secondary {
    background: var(--gradient-secondary);
}
.bg-gradient-home {
    background: var(--gradient-home);
}
.bg-gradient-start {
    background: var(--gradient-start);
}
.bg-gradient-frontend {
    background: var(--gradient-frontend);
}
.bg-gradient-backend {
    background: var(--gradient-backend);
}
.bg-gradient-fullstack {
    background: var(--gradient-fullstack);
}