/* =========================================
   RESET & GLOBAL STYLES
   ========================================= */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--color-background);
  color: var(--color-foreground);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography Base */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: var(--spacing-4);
  font-weight: 600;
}

p {
  margin-bottom: var(--spacing-4);
  color: var(--color-foreground-muted);
  font-weight: 400;
}

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

a:hover {
  color: var(--color-secondary);
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}

/* Base Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-8);
  }
}

/* Buttons - Zero friction, actionable */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-4) var(--spacing-6);
  font-family: var(--font-body);
  font-weight: 600;
  border-radius: var(--radius-pill);
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  text-align: center;
  gap: var(--spacing-2);
}

.btn-accent {
  background-color: var(--color-accent);
  color: var(--color-on-accent);
  box-shadow: var(--shadow-md);
}

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

/* Screen Reader Only / Acessibilidade */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}