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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background: var(--bg-deep);
  min-height: 100vh;
  overflow-x: hidden;
}

/* === Ambient background - subtle layered depth === */
.ambient-bg {
  position: fixed;
  inset: 0;
  background: var(--bg-deep);
  z-index: -2;
}

/* Soft radial vignette - warm center fading to dark edges */
.ambient-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(240, 180, 41, 0.03) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 60%, rgba(126, 184, 218, 0.02) 0%, transparent 45%),
    radial-gradient(ellipse at 50% 50%, rgba(28, 25, 23, 0) 30%, rgba(0, 0, 0, 0.3) 100%);
}

/* Extremely subtle noise texture for depth */
.ambient-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.015'/%3E%3C/svg%3E");
  opacity: 0.5;
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: var(--leading-tight);
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

h1 { font-size: var(--text-5xl); font-weight: 700; }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); font-weight: 500; }

p {
  margin-bottom: var(--space-4);
  line-height: var(--leading-relaxed);
}

a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

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

strong {
  font-weight: 600;
  color: var(--text-primary);
}

em {
  font-style: italic;
  color: var(--text-secondary);
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 0.15em 0.4em;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--accent-primary);
}

pre {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  padding: var(--space-6);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin-bottom: var(--space-6);
  line-height: 1.7;
}

pre code {
  padding: 0;
  background: none;
  border: none;
  color: var(--text-secondary);
}

blockquote {
  border-left: 3px solid var(--accent-primary);
  padding: var(--space-4) var(--space-6);
  margin: var(--space-6) 0;
  background: var(--accent-primary-dim);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
}

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

ul, ol {
  padding-left: var(--space-6);
  margin-bottom: var(--space-4);
}

li {
  margin-bottom: var(--space-2);
  line-height: var(--leading-relaxed);
}

hr {
  border: none;
  height: 1px;
  background: var(--border-subtle);
  margin: var(--space-8) 0;
}

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

::selection {
  background: var(--accent-primary);
  color: var(--text-inverse);
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-medium);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--border-strong);
}