/* Global CSS Variables */
:root {
  /* Colors - Blue Theme for Tax Automação */
  --color-primary: #1e40af;
  --color-primary-dark: #1e3a8a;
  --color-primary-light: #3b82f6;
  --color-secondary: #f97316;
  --color-accent: #06b6d4;

  --color-background: #ffffff;
  --color-surface: #f8fafc;
  --color-text: #0f172a;
  --color-text-secondary: #64748b;
  --color-border: #e2e8f0;

  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;

  /* Dark mode colors */
  --color-dark-background: #0f172a;
  --color-dark-surface: #1e293b;
  --color-dark-text: #f1f5f9;
  --color-dark-text-secondary: #94a3b8;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* 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);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  /* Container */
  --container-max-width: 1280px;
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}

h1 {
  font-size: var(--font-size-5xl);
}
h2 {
  font-size: var(--font-size-4xl);
}
h3 {
  font-size: var(--font-size-3xl);
}
h4 {
  font-size: var(--font-size-2xl);
}
h5 {
  font-size: var(--font-size-xl);
}
h6 {
  font-size: var(--font-size-lg);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
}

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

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

/* Buttons */
.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

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

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

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

.btn-large {
  padding: 1rem 2rem;
  font-size: var(--font-size-lg);
}

/* Form Elements */
input[type="text"],
input[type="email"],
input[type="tel"],
select,
textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-background);
  color: var(--color-text);
  transition: border-color var(--transition-fast);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

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

/* Responsive */
@media (max-width: 768px) {
  :root {
    --font-size-5xl: 2rem;
    --font-size-4xl: 1.75rem;
    --font-size-3xl: 1.5rem;
  }

  .container {
    padding: 0 var(--spacing-md);
  }
}