/* Colours come from tokens.css (light and dark values). */
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, sans-serif; color: var(--fg); background: var(--bg); }
header { display: flex; justify-content: space-between; align-items: center; padding: 0.75rem 1.5rem; background: var(--card); border-bottom: 1px solid var(--border); }
main { max-width: 960px; margin: 2rem auto; padding: 0 1rem; }
.card { background: var(--card); border-radius: 8px; padding: 1.5rem; margin-bottom: 1.5rem; box-shadow: var(--shadow-sm); }
.narrow { max-width: 420px; margin: 4rem auto; }
label { display: block; margin: 0.75rem 0 0.25rem; font-weight: 600; }
input, select { width: 100%; padding: 0.5rem; border: 1px solid var(--border-strong); border-radius: 4px; font: inherit; color: var(--fg); background: var(--surface); }
button { margin-top: 1rem; padding: 0.5rem 1rem; border: 0; border-radius: 4px; background: var(--accent); color: var(--on-accent); font: inherit; cursor: pointer; }
button.link { background: none; color: var(--accent); padding: 0; margin: 0; }
button.danger { background: var(--danger); }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 0.5rem; border-bottom: 1px solid var(--border); }
.error { color: var(--danger); }
.muted { color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 0.75rem; align-items: end; }
#chat-widget { position: fixed; right: 1rem; bottom: 1rem; z-index: 10; }
#chat-widget [data-chat-panel] { width: min(360px, calc(100vw - 2rem)); background: var(--card); border-radius: 8px; box-shadow: var(--shadow-lg); padding: 1rem; margin-bottom: .5rem; }
#chat-widget [data-chat-log] { max-height: 320px; overflow-y: auto; }
.chat-user { text-align: right; } .chat-assistant { color: var(--fg); } .chat-system { color: var(--muted); font-style: italic; }

/* Wider canvas and a wrapping header (shop, login). */
main { max-width: 1280px; }
header { flex-wrap: wrap; gap: 0.5rem 1rem; }
header nav { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 1.25rem; }
.session { display: flex; align-items: center; gap: 0.75rem; }
@media (max-width: 720px) {
  header { padding: 0.75rem 1rem; }
  header nav { width: 100%; justify-content: space-between; }
  main { margin: 1rem auto; padding: 0 0.5rem; }
  .card { padding: 1rem; }
}

code { overflow-wrap: anywhere; }
/* A table wider than its card scrolls inside the card instead of widening the page. */
.card { overflow-x: auto; }

/* Theme: links and controls follow the tokens; the toggle is a quiet icon button. */
a { color: var(--accent); }
button:hover:not(.link):not(.theme-toggle) { filter: brightness(1.08); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
tbody tr:hover td { background: var(--row-hover); }
.theme-toggle { margin: 0; padding: 0.25rem 0.5rem; background: none; color: var(--fg); border: 1px solid var(--border-strong); border-radius: 999px; line-height: 1; }
.theme-toggle:hover { background: var(--surface-2); }
.header-bare { justify-content: flex-end; border-bottom: 0; background: none; }