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

/* Base */
html {
  scroll-snap-type: y proximity;
}

html, body {
  height: 100%;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  background: var(--bg-primary);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* App Container */
#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Typography Scale */
h1 {
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.875rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.3;
}

h4 {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.4;
}

h5 {
  font-size: 1.125rem;
  font-weight: 500;
  line-height: 1.4;
}

h6 {
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.5;
}

p {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

small {
  font-size: 0.875rem;
  color: var(--text-muted);
}

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

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

/* Code */
code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--bg-tertiary);
  padding: 0.2em 0.4em;
  border-radius: var(--radius-sm);
}