/* Base styles - Global typography and layout */
body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-white);
}

/* Container utility class */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-6xl);
}

h2 {
  font-size: var(--font-size-5xl);
}

h3 {
  font-size: var(--font-size-4xl);
}

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

strong {
  font-weight: var(--font-weight-bold);
}

/* Utility classes */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Lazy loading placeholder */
.lazy-img,
.lazy-bg {
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.lazy-img.loaded,
.lazy-bg.loaded {
  opacity: 1;
}

/* Loading animation */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.loading {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Focus styles for accessibility */
*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Smooth scrolling for anchor links */
html {
  scroll-behavior: smooth;
}

/* Main content wrapper */
.main {
  min-height: 100vh;
}