/**
 * Base Styles — Bird Capital Website
 * Typography, body defaults, and utility classes
 */

/* ===== BODY ===== */
body {
  font-family: var(--font-secondary);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-normal);
  color: var(--color-text-dark);
  background-color: var(--color-background-white);
}

/* ===== TYPOGRAPHY ===== */

/* Headings - Primary font (Josefin Sans) */
h1,
h2,
h3,
h4 {
  font-family: var(--font-primary);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
}

h1 {
  font-size: var(--font-size-hero);
}

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

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

/* Body text - Secondary font (Source Sans 3) */
p {
  font-family: var(--font-secondary);
  line-height: var(--line-height-relaxed);
}

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

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

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ===== LAYOUT UTILITIES ===== */

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width-content);
  margin-inline: auto;
  padding-inline: var(--page-margin);
}

/* Section padding */
.section {
  padding-block: var(--space-xl);
}

@media (min-width: 768px) {
  .section {
    padding-block: var(--space-2xl);
  }
}

@media (min-width: 1024px) {
  .section {
    padding-block: var(--space-3xl);
  }
}

/* Text container (narrower for editorial content) */
.text-container {
  max-width: var(--max-width-text);
  margin-inline: auto;
}

/* ===== VISIBILITY UTILITIES ===== */

.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;
}

/* ===== ANIMATION UTILITIES ===== */

/* Fade in animation for scroll-triggered elements */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Smooth scroll behavior */
html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
}