/**
 * Base Styles & CSS Reset
 * Smooth, humane typography and accessible fundamentals
 */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  line-height: 1.65;
  font-weight: 400;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Background Ambient Grain / Glow Mesh */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 600px;
  background: radial-gradient(circle at 50% -100px, var(--color-terracotta-soft) 0%, transparent 65%),
              radial-gradient(circle at 10% 200px, var(--color-sage-soft) 0%, transparent 40%),
              radial-gradient(circle at 90% 300px, var(--color-amber-soft) 0%, transparent 45%);
  pointer-events: none;
  z-index: 0;
  opacity: 0.85;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input, button, textarea, select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

p {
  color: var(--text-secondary);
}

code, kbd, samp, pre {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

::selection {
  background-color: var(--color-terracotta-soft);
  color: var(--color-terracotta);
}

/* Accessible Focus States */
:focus-visible {
  outline: 2px solid var(--color-terracotta);
  outline-offset: 3px;
  border-radius: var(--radius-xs);
}

/* Custom Soft Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-canvas);
}

::-webkit-scrollbar-thumb {
  background: var(--border-medium);
  border-radius: var(--radius-pill);
  border: 3px solid var(--bg-canvas);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Skip to Main Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--color-terracotta);
  color: #FFFFFF;
  padding: 12px 20px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  z-index: 9999;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 20px;
}

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