/* ============================================
   BASE.CSS - Reset e Fundamentos
   ============================================ */

/* Reset e normalização */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Paleta de cores - Tema Azul Moderno para Tecnologia */
  --color-primary: #2563eb;
  --color-primary-dark: #1e40af;
  --color-primary-light: #60a5fa;
  --color-secondary: #06b6d4;
  --color-secondary-dark: #0891b2;
  --color-secondary-light: #22d3ee;
  
  --color-accent: #fbbf24;
  --color-accent-dark: #f59e0b;
  
  --color-text: #1e293b;
  --color-text-light: #475569;
  --color-text-muted: #64748b;
  
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-bg-section: #f1f5f9;
  
  --color-border: #e2e8f0;
  --color-shadow: rgba(15, 23, 42, 0.1);
  
  --color-success: #10b981;
  --color-warning: #fbbf24;
  --color-error: #ef4444;
  --color-info: #3b82f6;
  
  /* Tipografia */
  --font-primary: system-ui, -apple-system, 'Segoe UI', 'Roboto', 'Inter', 'Helvetica Neue', Arial, sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.6;
  
  /* Espaçamentos */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  
  /* Bordas */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Sombras */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  
  /* Transições */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
  
  /* Larguras */
  --container-max: 1200px;
  --container-md: 960px;
  --container-sm: 720px;
}

/* Tipografia base */
html {
  font-size: var(--font-size-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

/* Heading styles */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

/* Parágrafos */
p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-light);
}

/* Links */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

/* Listas */
ul, ol {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-lg);
}

li {
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-light);
}

/* Imagens */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Container genérico */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-md {
  max-width: var(--container-md);
}

.container-sm {
  max-width: var(--container-sm);
}

/* Utilitários de espaçamento */
.mb-0 { margin-bottom: 0 !important; }
.mb-sm { margin-bottom: var(--spacing-sm) !important; }
.mb-md { margin-bottom: var(--spacing-md) !important; }
.mb-lg { margin-bottom: var(--spacing-lg) !important; }
.mb-xl { margin-bottom: var(--spacing-xl) !important; }

.mt-0 { margin-top: 0 !important; }
.mt-sm { margin-top: var(--spacing-sm) !important; }
.mt-md { margin-top: var(--spacing-md) !important; }
.mt-lg { margin-top: var(--spacing-lg) !important; }
.mt-xl { margin-top: var(--spacing-xl) !important; }

/* Utilitários de texto */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-muted { color: var(--color-text-muted); }

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-normal { font-weight: 400; }

/* Responsividade */
@media (max-width: 1024px) {
  :root {
    --font-size-base: 15px;
  }
  
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
}

@media (max-width: 768px) {
  :root {
    --font-size-base: 14px;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
  }
  
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
  
  .container {
    padding: 0 var(--spacing-sm);
  }
}

@media (max-width: 480px) {
  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.25rem; }
  h3 { font-size: 1.125rem; }
}