/* ==========================================================================
   Base CSS Utilities
   Shared utility classes used across all pages
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Reset & Preflight (Replacing Tailwind Preflight)
   -------------------------------------------------------------------------- */
*, ::before, ::after {
  box-sizing: border-box;
  border-width: 0;
  border-style: solid;
  border-color: var(--color-border, #e5e7eb);
}

html {
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  -moz-tab-size: 4;
  tab-size: 4;
  font-family: var(--font-body, "Work Sans", sans-serif);
}

body {
  margin: 0;
  line-height: inherit;
}

main {
  padding: 0px 0px !important;
  padding-top: 0px !important;
}

hr {
  height: 0;
  color: inherit;
  border-top-width: 1px;
}

h1, h2, h3, h4, h5, h6 {
  font-size: inherit;
  font-weight: inherit;
}

a {
  color: inherit;
  text-decoration: inherit;
}

b, strong {
  font-weight: bolder;
}

code, kbd, samp, pre {
  font-family: monospace, monospace;
  font-size: 1em;
}

small {
  font-size: 80%;
}

sub, sup {
  font-size: 75%;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

sub { bottom: -0.25em; }
sup { top: -0.5em; }

table {
  text-indent: 0;
  border-color: inherit;
  border-collapse: collapse;
}

button, input, optgroup, select, textarea {
  font-family: inherit;
  font-size: 100%;
  line-height: inherit;
  color: inherit;
  margin: 0;
  padding: 0;
}

button, select {
  text-transform: none;
}

button, [type='button'], [type='reset'], [type='submit'] {
  -webkit-appearance: button;
  background-color: transparent;
  background-image: none;
}

:-moz-focusring {
  outline: auto;
}

:-moz-ui-invalid {
  box-shadow: none;
}

progress {
  vertical-align: baseline;
}

::-webkit-inner-spin-button, ::-webkit-outer-spin-button {
  height: auto;
}

[type='search'] {
  -webkit-appearance: textfield;
  outline-offset: -2px;
}

::-webkit-search-decoration {
  -webkit-appearance: none;
}

::-webkit-file-upload-button {
  -webkit-appearance: button;
  font: inherit;
}

summary {
  display: list-item;
}

blockquote, dl, dd, h1, h2, h3, h4, h5, h6, hr, figure, p, pre {
  margin: 0;
}

fieldset {
  margin: 0;
  padding: 0;
}

legend {
  padding: 0;
}

ol, ul, menu {
  list-style: none;
  margin: 0;
  padding: 0;
}

textarea {
  resize: vertical;
}

input::placeholder, textarea::placeholder {
  opacity: 1;
  color: #9ca3af;
}

button, [role="button"] {
  cursor: pointer;
}

:disabled {
  cursor: default;
}

img, svg, video, canvas, audio, iframe, embed, object {
  display: block;
  vertical-align: middle;
}

img, video {
  max-width: 100%;
  height: auto;
}

[hidden] {
  display: none;
}

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

/* --------------------------------------------------------------------------
   Reveal Animation
   Used with IntersectionObserver in reveal.js
   -------------------------------------------------------------------------- */
.js-reveal {
  opacity: 0;
  transform: translateY(48px);
  transition: var(--transition-reveal, opacity 0.6s ease, transform 0.8s ease);
}

.js-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   Display Utilities
   -------------------------------------------------------------------------- */
.is-hidden {
  display: none !important;
}

/* --------------------------------------------------------------------------
   Reduced Motion Support
   Respects user preference for reduced motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .js-reveal {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ==========================================================================
   Site Layout Utilities
   Core layout classes for body, main, and containers
   ========================================================================== */

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

/* Body layout - flex column for sticky footer */
body.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Main content grows to push footer down */
main.site-main {
  flex-grow: 1;
  padding-top: 7rem; /* Space for fixed nav */
}

/* ==========================================================================
   Container Utilities
   ========================================================================== */
.container {
  width: 100%;
  max-width: 72rem; /* 1152px / max-w-6xl equivalent */
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

@media (min-width: 1024px) {
  .container {
    padding-left: 3rem;
    padding-right: 3rem;
  }
}

/* ==========================================================================
   Flexbox Utilities
   ========================================================================== */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-grow { flex-grow: 1; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-start { justify-content: flex-start; }

/* ==========================================================================
   Grid Utilities
   ========================================================================== */
.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }

/* ==========================================================================
   Spacing Utilities
   ========================================================================== */
.gap-4 { gap: 1rem; }
.gap-8 { gap: 2rem; }
.gap-12 { gap: 3rem; }
.gap-16 { gap: 4rem; }

.space-x-4 > * + * { margin-left: 1rem; }
.space-y-2 > * + * { margin-top: 0.5rem; }
.space-y-4 > * + * { margin-top: 1rem; }
.space-y-6 > * + * { margin-top: 1.5rem; }

.mt-6 { margin-top: 1.5rem; }
.mt-12 { margin-top: 3rem; }
.mt-32 { margin-top: 8rem; }
.pt-8 { padding-top: 2rem; }
.py-6 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.py-16 { padding-top: 4rem; padding-bottom: 4rem; }

/* ==========================================================================
   Typography Utilities
   ========================================================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-xs { font-size: 0.75rem; line-height: 1rem; }
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-lg { font-size: 1.125rem; line-height: 1.75rem; }
.text-xl { font-size: 1.25rem; line-height: 1.75rem; }
.text-2xl { font-size: 1.5rem; line-height: 2rem; }
.text-3xl { font-size: 1.875rem; line-height: 2.25rem; }
.font-serif { font-family: var(--font-display, serif); }
.uppercase { text-transform: uppercase; }
.leading-tight { line-height: 1.25; }

/* ==========================================================================
   Border Utilities
   ========================================================================== */
.border-t { border-top-width: 1px; border-top-style: solid; }
.border-b { border-bottom-width: 1px; border-bottom-style: solid; }

/* ==========================================================================
   Transition Utilities
   ========================================================================== */
.transition {
  transition-property: color, background-color, border-color, opacity, transform;
  transition-timing-function: ease;
  transition-duration: 300ms;
}

.transition:hover {
  /* Hover states defined per-element */
}