/* ============================================
   BASE STYLES
   Society & AI Design System
   ============================================

   Foundational styles for the site including:
   - Body and HTML defaults
   - Typography base
   - Link styles
   - Breadcrumbs
   - Utility classes

   Requires: tokens.css to be loaded first
   ============================================ */

/* ==========================================
   HTML & BODY
   ========================================== */
html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  margin: 0;
  padding: 0;
  padding-top: var(--nav-height);
  text-align: left;
  background: var(--color-bg);
  word-wrap: break-word;
  overflow-wrap: break-word;
  color: var(--color-text);
  font-size: var(--text-md);
  line-height: var(--leading-loose);
  overflow-x: hidden;
  max-width: 100vw;
}

/* ==========================================
   MAIN CONTENT AREA
   ========================================== */
main {
  width: 100%;
  margin: auto;
  padding: 0;
  background: var(--color-bg);
  overflow-x: hidden;
  max-width: 100vw;
}

/* ==========================================
   IMAGES
   ========================================== */
img {
  max-width: 100%;
  height: auto;
}

/* ==========================================
   LINKS
   ========================================== */
a {
  color: inherit;
  text-decoration: none;
}

/* ==========================================
   LOGO STYLING
   ========================================== */
.logo-text,
.main-title,
.hero-left h1,
.nav-brand a,
.custom-nav .logo-text,
.logo-link,
.logo-link .logo-text,
header .logo-text,
header a[href="/"],
.custom-nav a[href="/"] {
  font-family: var(--font-display);
  color: var(--color-black);
  font-weight: var(--font-semibold);
  font-size: var(--text-xl);
  text-decoration: none;
  letter-spacing: -0.01em;
}

/* Ampersand styling in logo */
.ampersand,
.logo-text .ampersand,
.main-title .ampersand,
.custom-nav .ampersand,
header .ampersand {
  font-style: italic;
  font-family: var(--font-display);
  color: var(--color-black);
}

/* ==========================================
   BREADCRUMB STYLING
   ========================================== */
.breadcrumb {
  max-width: var(--max-width-article);
  margin: 0 auto;
  padding: var(--space-6) var(--space-8) var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
}

.breadcrumb a,
.breadcrumb-home,
.breadcrumb a[href="/"],
nav.breadcrumb a,
nav.breadcrumb a[href="/"] {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--font-normal);
  color: var(--color-text-muted);
  text-decoration: none;
  letter-spacing: normal;
}

.breadcrumb-separator,
.breadcrumb-current,
.breadcrumb span {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--font-normal);
  color: var(--color-text-muted);
  text-decoration: none;
}

.breadcrumb-separator {
  margin: 0 var(--space-1);
  color: var(--color-text-muted);
}

.breadcrumb a:hover,
nav.breadcrumb a:hover {
  color: var(--color-text-muted);
  text-decoration: underline;
  opacity: 1;
}

/* ==========================================
   CALLOUT BOXES
   ========================================== */
.callout {
  border-left: var(--border-width-thick) solid var(--color-primary);
  background-color: var(--color-bg-muted);
  padding: var(--space-6);
  margin: var(--space-8) 0;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: var(--leading-relaxed);
  color: var(--color-gray-800);
  font-style: italic;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.callout p {
  margin: 0;
  padding: 0;
}

/* ==========================================
   UTILITY CLASSES
   ========================================== */

/* Background utilities */
.bg-white { background-color: var(--color-white); }
.bg-subtle { background-color: var(--color-bg-subtle); }
.bg-muted { background-color: var(--color-bg-muted); }
.bg-dark { background-color: var(--color-bg-dark); }
.bg-primary { background-color: var(--color-primary); }

/* Text color utilities */
.text-primary { color: var(--color-text); }
.text-secondary { color: var(--color-text-secondary); }
.text-muted { color: var(--color-text-muted); }
.text-inverse { color: var(--color-text-inverse); }
.text-link { color: var(--color-link); }

/* Font family utilities */
.font-display { font-family: var(--font-display); }
.font-body { font-family: var(--font-body); }
.font-article { font-family: var(--font-article); }
.font-heading { font-family: var(--font-heading); }

/* Text alignment */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

/* Font weight utilities */
.font-light { font-weight: var(--font-light); }
.font-normal { font-weight: var(--font-normal); }
.font-medium { font-weight: var(--font-medium); }
.font-semibold { font-weight: var(--font-semibold); }
.font-bold { font-weight: var(--font-bold); }

/* Spacing utilities */
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mt-4 { margin-top: var(--space-4); }
.mb-4 { margin-bottom: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mb-8 { margin-bottom: var(--space-8); }

/* Layout utilities */
.container {
  width: var(--content-width);
  max-width: var(--max-width-site);
  margin: 0 auto;
  padding: 0 var(--space-8);
}

.container-narrow {
  width: var(--content-width);
  max-width: var(--max-width-narrow);
  margin: 0 auto;
  padding: 0 var(--space-8);
}

.container-article {
  width: var(--content-width);
  max-width: var(--max-width-article);
  margin: 0 auto;
  padding: 0 var(--space-8);
}

/* Full-width section utility */
.full-width {
  width: 100vw;
  margin-left: calc(50% - 50vw);
}

/* ==========================================
   HIDE HEXTRA DEFAULT NAV
   ========================================== */
.hextra-nav-container {
  display: none;
}

/* ==========================================
   MOBILE RESPONSIVE BASE
   ========================================== */
@media (max-width: 768px) {
  main {
    padding-left: 0;
    padding-right: 0;
    box-sizing: border-box;
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
  }

  .container,
  .container-narrow,
  .container-article {
    width: var(--content-width-mobile);
    padding: 0 var(--space-4);
  }

  /* Reset full-width breakout calculations on mobile */
  .full-width {
    margin-left: 0;
    width: 100%;
    max-width: 100%;
  }
}