* { box-sizing: border-box; }
html { color-scheme: light dark; }
:root[data-theme="light"] { color-scheme: light; }
:root[data-theme="dark"] { color-scheme: dark; }

body {
  margin: 0;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  background: var(--color-background);
  color: var(--color-text);
  font: 400 var(--font-size-md)/1.6 var(--font-body);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-header {
  display: flex;
  align-items: center;
  column-gap: var(--space-sm);
  flex-wrap: wrap;
  padding: var(--space-md) var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
}

.wordmark {
  display: block;
  width: 160px;
  height: 44px;
  margin-right: auto;
  background: url(/shared/vouchnote-horizontal-light.svg) left center / 160px 32px no-repeat;
}
:root[data-theme="dark"] .wordmark { background-image: url(/shared/vouchnote-horizontal-dark.svg); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .wordmark { background-image: url(/shared/vouchnote-horizontal-dark.svg); }
}

.site-nav { display: flex; align-items: center; gap: var(--space-xs); margin-left: auto; }
@media (min-width: 60rem) {
  .site-header { column-gap: var(--space-lg); padding: var(--space-md) var(--space-lg); }
}

:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; }

.theme-picker { position: relative; }
.theme-button {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
}
.theme-button:hover { border-color: var(--color-accent); }
.theme-menu {
  inset: auto;
  position: absolute;
  top: 64px;
  right: var(--space-md);
  margin: 0;
  padding: 4px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-background);
  color: var(--color-text);
  min-width: 9rem;
}
.theme-menu button {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  width: 100%;
  min-height: 44px;
  padding: 0 10px;
  border: 0;
  border-radius: var(--radius-sm);
  background: none;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}
@media (min-width: 60rem) { .theme-menu { right: var(--space-lg); } }
.theme-menu button:hover { background: var(--color-surface); }
.theme-menu button[aria-checked="true"] { color: var(--color-accent); }

main { flex: 1; }

.hero {
  display: grid;
  place-items: center;
  padding: 2rem 1.25rem;
  text-align: center;
}
@media (min-width: 48rem) { .hero { padding: 3rem 1.5rem; } }
.hero .inner { max-width: 34rem; }
.hero h1 {
  margin: 0 0 .75rem;
  font-size: clamp(2rem, 8vw, 3rem);
  font-weight: 600;
  letter-spacing: -.02em;
  line-height: 1.15;
  text-wrap: balance;
}
.tag { color: var(--color-muted); font-size: clamp(1rem, 4vw, 1.125rem); margin: 0; }
.tag + .tag { margin-top: var(--space-sm); }

.site-footer {
  padding: var(--space-lg);
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-muted);
  border-top: 1px solid var(--color-border);
}