:root { font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: var(--a8-text-primary); background: var(--a8-canvas); color-scheme: light; }
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; min-height: 100vh; display: flex; flex-direction: column; }
.masthead { display: flex; align-items: center; justify-content: space-between; padding: 24px clamp(24px, 6vw, 80px); border-bottom: 1px solid var(--a8-border-subtle); gap: 20px; }
.masthead > span, .eyebrow { font-size: 10px; font-weight: 600; letter-spacing: .14em; }
.masthead > span { color: var(--a8-text-secondary); }
.wordmark { color: var(--a8-text-primary); font-size: 28px; font-weight: 700; letter-spacing: -.065em; text-decoration: none; }
.wordmark span { color: var(--a8-accent); }
main { width: 100%; max-width: 570px; padding: clamp(40px, 8vh, 96px) 24px 48px; margin: 0 auto; flex: 1; }
.eyebrow { color: var(--a8-accent); margin: 0 0 16px; }
h1 { font-size: clamp(30px, 5vw, 38px); line-height: 1.15; letter-spacing: -.045em; font-weight: 500; margin: 0 0 18px; }
.intro { color: var(--a8-text-secondary); line-height: 1.65; font-size: 15px; margin: 0 0 32px; max-width: 430px; }
label { display: block; font-size: 13px; font-weight: 600; margin: 20px 0 9px; }
input { width: 100%; background: var(--a8-surface); border: 1px solid var(--a8-border); border-radius: var(--a8-radius-md); padding: 13px 14px; color: var(--a8-text-primary); font: inherit; font-size: 16px; min-height: 48px; }
input::placeholder { color: var(--a8-text-secondary); }
button { font: inherit; cursor: pointer; }
form button { width: 100%; display: flex; justify-content: space-between; align-items: center; margin-top: 22px; min-height: 48px; padding: 13px 16px; border: 0; border-radius: var(--a8-radius-md); background: var(--a8-accent); color: var(--a8-accent-fg); font-size: 14px; font-weight: 600; }
form button:hover { background: var(--a8-accent-hover); }
button:disabled { cursor: wait; opacity: .6; }
:focus-visible { outline: 2px solid var(--a8-accent); outline-offset: 4px; }
.account { display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--a8-border-subtle); padding-bottom: 18px; margin-bottom: 36px; font-size: 12px; gap: 12px; color: var(--a8-text-secondary); }
.text-button { background: none; border: none; color: var(--a8-text-secondary); text-decoration: underline; text-underline-offset: 3px; padding: 8px 0 8px 12px; }
.details { margin: 32px 0 0; padding: 18px 0; border-block: 1px solid var(--a8-border-subtle); font-size: 12px; }
.details div { display: flex; justify-content: space-between; gap: 16px; padding: 7px 0; }
dt { color: var(--a8-text-secondary); } dd { margin: 0; color: var(--a8-text-secondary); text-align: right; }
.footnote { font-size: 11px; color: var(--a8-text-secondary); line-height: 1.7; margin: 20px 0 0; }
.error { color: var(--a8-danger-strong); font-size: 13px; line-height: 1.6; }
#result { margin-top: 24px; padding: 16px; border: 1px solid var(--a8-border); border-left: 3px solid var(--a8-accent); border-radius: var(--a8-radius-md); background: var(--a8-surface); overflow-wrap: anywhere; }
#result strong { display: block; font-size: 14px; margin-bottom: 8px; }
#result p { font-size: 13px; line-height: 1.65; margin: 4px 0; color: var(--a8-text-secondary); }
footer { border-top: 1px solid var(--a8-border-subtle); display: flex; justify-content: space-between; gap: 12px; color: var(--a8-text-secondary); font-size: 11px; padding: 20px clamp(24px, 6vw, 80px); }
.loading { color: var(--a8-text-secondary); font-size: 14px; }
@media (max-width: 420px) { .masthead { padding-block: 18px; } .details div { gap: 8px; } }