/* ==========================================================================
   AMVAC 2027 — Base, Typography & Accessibility Stylesheet
   ========================================================================== */

/* Modern CSS Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 0.9375rem; /* 15px */
  line-height: 1.65;
  color: var(--slate-800);
  background-color: var(--surface-light);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Accessible Focus States */
:focus-visible {
  outline: 2px solid var(--blue-600);
  outline-offset: 2px;
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
  color: var(--navy-900);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.015em;
}

h1.display-title {
  font-family: var(--font-serif);
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  line-height: 1.15;
}

h2.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.15rem);
  margin-bottom: var(--space-3);
  position: relative;
}

h2.section-title.text-center {
  text-align: center;
}

h3.subsection-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
}

p {
  margin-bottom: var(--space-4);
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--blue-600);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--navy-900);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Layout Containers */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

@media (min-width: 1200px) {
  .container {
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }
}

.container-narrow {
  max-width: var(--container-narrow);
}

.main-content {
  flex: 1 0 auto;
}

/* Screen Reader Only Utility */
.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;
}

/* Accessible Skip Navigation Link */
.skip-link {
  position: absolute;
  top: var(--space-2);
  left: var(--space-2);
  z-index: 10000;
  background-color: var(--gold-500);
  color: var(--navy-950);
  padding: var(--space-2) var(--space-4);
  font-weight: 700;
  font-size: 0.875rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transform: translateY(-200%);
  transition: transform var(--transition-fast);
}

.skip-link:focus-visible {
  transform: translateY(0);
  outline: 3px solid var(--navy-950);
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}