@import url("tokens.css");

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + var(--space-md));
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--color-background);
  color: var(--color-foreground);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

#main,
.app-shell {
  flex: 1 0 auto;
}

body.nav-open {
  overflow: hidden;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 var(--space-sm);
}


h1 {
  font-size: clamp(1.85rem, 4.2vw, 2.75rem);
  font-weight: 900;
}

h2 {
  font-size: clamp(1.35rem, 2.8vw, 1.85rem);
  font-weight: 700;
}

h3 {
  font-size: clamp(1.05rem, 2vw, 1.2rem);
}

p {
  margin: 0 0 var(--space-md);
  color: var(--color-text-muted);
}

a {
  color: var(--color-secondary);
  text-decoration: none;
  transition: color var(--dur-base) var(--ease-expo);
}

a:hover {
  color: var(--color-foreground);
}

img,
svg {
  max-width: 100%;
  display: block;
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

:focus-visible {
  outline: 2px solid var(--color-ring);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.skip-link {
  position: absolute;
  left: var(--space-md);
  top: -100px;
  z-index: 200;
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  transition: top var(--dur-base) var(--ease-expo);
}

.skip-link:focus {
  top: var(--space-md);
  color: var(--color-on-primary);
}

.container {
  width: min(100% - 2rem, var(--content-width));
  margin-inline: auto;
}

.section {
  padding-block: clamp(1.75rem, 4.5vw, 3rem);
}

.section--muted {
  background: var(--color-section-muted);
  border-block: 1px solid var(--color-border-soft);
}

.section__head {
  max-width: 62ch;
  margin-bottom: var(--space-xl);
}

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

.section__foot {
  margin-top: var(--space-lg);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-secondary);
  margin-bottom: var(--space-sm);
  font-weight: 600;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.toast {
  position: fixed;
  right: var(--space-md);
  bottom: var(--space-md);
  z-index: 300;
  max-width: min(420px, calc(100vw - 2rem));
  padding: var(--space-md) var(--space-lg);
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-md);
  color: var(--color-foreground);
  box-shadow: var(--shadow-lg);
  font-size: 0.92rem;
}

.toast[hidden] {
  display: none;
}