* { box-sizing: border-box; }

html { color-scheme: dark; }

body {
  margin: 0;
  background: var(--page-bg);
  color: var(--text);
  font: 16px/1.5 var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

button, input, select { font: inherit; }
a { color: var(--accent); }
a:hover { color: var(--accent-text); }

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

.site-header,
.page-shell {
  width: min(1100px, calc(100% - 64px));
  margin-inline: auto;
}

.site-header {
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-header__brand {
  color: var(--text);
  font-weight: 650;
  text-decoration: none;
}

.language-switcher {
  display: flex;
  gap: 0.5rem;
}

.language-switcher__button {
  padding: 2px 6px;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: color 0.15s ease;
}

.language-switcher__button[aria-pressed="true"] {
  color: var(--text);
  font-weight: 700;
}

.language-switcher__button:hover { color: var(--text); }

.window {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-window);
  box-shadow: var(--window-shadow);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent-text);
  font: 600 0.75rem/1.5 var(--font-mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h1, h2, h3, h4, p { margin-top: 0; }

.button {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-button);
  background: var(--surface-raised);
  color: var(--btn-text);
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.button:hover {
  border-color: var(--muted);
  color: var(--text);
}

.button--primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--on-accent);
}

.button--primary:hover {
  background: var(--accent-text);
  border-color: var(--accent-text);
  color: var(--on-accent);
}

@media (max-width: 768px) {
  .site-header, .page-shell { width: min(100% - 32px, 1100px); }
  .site-header { min-height: 64px; }
}