/* Base Styles */
:root {
  /* Color Variables */
  --color-primary: #009c3b; /* Brazil green */
  --color-primary-light: #00b846;
  --color-primary-dark: #007c2f;
  
  --color-secondary: #ffdf00; /* Brazil yellow */
  --color-secondary-light: #ffea4d;
  --color-secondary-dark: #ccb200;
  
  --color-accent: #002776; /* Brazil blue */
  --color-accent-light: #0039bd;
  --color-accent-dark: #001a55;
  
  --color-success: #22c55e;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  
  /* Typography */
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Open Sans', sans-serif;
  --line-height-body: 1.5;
  --line-height-heading: 1.2;
  
  /* Spacing */
  --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 */
  
  /* Border Radius */
  --radius-sm: 0.125rem; /* 2px */
  --radius-md: 0.25rem;  /* 4px */
  --radius-lg: 0.5rem;   /* 8px */
  --radius-xl: 1rem;     /* 16px */
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;
  
  /* Container Max Width */
  --container-max-width: 1200px;
  --container-padding: var(--spacing-4);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  line-height: var(--line-height-body);
  color: var(--color-gray-800);
  background-color: var(--color-gray-50);
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: var(--line-height-heading);
  font-weight: 700;
  margin-bottom: var(--spacing-4);
  color: var(--color-gray-900);
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

h5 {
  font-size: 1.125rem;
}

h6 {
  font-size: 1rem;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-light);
}

p {
  margin-bottom: var(--spacing-4);
}

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

ul, ol {
  list-style-position: inside;
  margin-bottom: var(--spacing-4);
}

li {
  margin-bottom: var(--spacing-2);
}

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

main {
  flex: 1;
}

/* Buttons */
.btn {
  display: inline-block;
  font-weight: 600;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  user-select: none;
  border: 1px solid transparent;
  padding: var(--spacing-2) var(--spacing-4);
  font-size: 1rem;
  line-height: 1.5;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: white;
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: var(--color-gray-900);
  border-color: var(--color-secondary);
}

.btn-secondary:hover {
  background-color: var(--color-secondary-dark);
  border-color: var(--color-secondary-dark);
  color: var(--color-gray-900);
}

.btn-accent {
  background-color: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

.btn-accent:hover {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: white;
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: white;
}

/* Form Elements */
.form-group {
  margin-bottom: var(--spacing-4);
}

label {
  display: block;
  margin-bottom: var(--spacing-2);
  font-weight: 600;
}

input,
textarea,
select {
  display: block;
  width: 100%;
  padding: var(--spacing-2) var(--spacing-3);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-gray-700);
  background-color: white;
  background-clip: padding-box;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--color-accent);
  outline: 0;
  box-shadow: 0 0 0 3px rgba(0, 39, 118, 0.1);
}

textarea {
  resize: vertical;
  min-height: 100px;
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.mb-1 {
  margin-bottom: var(--spacing-1);
}

.mb-2 {
  margin-bottom: var(--spacing-2);
}

.mb-4 {
  margin-bottom: var(--spacing-4);
}

.mb-8 {
  margin-bottom: var(--spacing-8);
}

.mt-1 {
  margin-top: var(--spacing-1);
}

.mt-2 {
  margin-top: var(--spacing-2);
}

.mt-4 {
  margin-top: var(--spacing-4);
}

.mt-8 {
  margin-top: var(--spacing-8);
}

.section-title {
  position: relative;
  margin-bottom: var(--spacing-8);
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 60px;
  height: 4px;
  background-color: var(--color-primary);
}

/* Media Queries */
/* Mobile First Approach */

/* Tablet (768px and up) */
@media (min-width: 768px) {
  :root {
    --container-padding: var(--spacing-6);
  }
  
  h1 {
    font-size: 3rem;
  }
  
  h2 {
    font-size: 2.25rem;
  }
  
  h3 {
    font-size: 1.75rem;
  }
}

/* Desktop (1024px and up) */
@media (min-width: 1024px) {
  h1 {
    font-size: 3.5rem;
  }
  
  h2 {
    font-size: 2.5rem;
  }
  
  h3 {
    font-size: 2rem;
  }
}

/* Large Desktop (1280px and up) */
@media (min-width: 1280px) {
  :root {
    --container-padding: var(--spacing-8);
  }
}