:root { color-scheme: light; font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: #171926; background: #f8fafc; }
* { box-sizing: border-box; }
body { margin: 0; background: #f8fafc; }
button, textarea { font: inherit; }
[hidden] { display: none !important; }
.tool { width: min(100%, 1000px); margin: auto; padding: clamp(20px, 4vw, 40px); }
.tool__header { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; margin-bottom: 24px; }
.eyebrow { margin: 0 0 8px; color: #075985; font-size: .76rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
h2, h3, h4, p { margin-top: 0; }
h2 { margin-bottom: 10px; font-size: clamp(1.65rem, 4vw, 2.35rem); line-height: 1.08; letter-spacing: -.035em; }
.lead { max-width: 700px; margin-bottom: 0; color: #5d6472; line-height: 1.6; }
.privacy { flex: none; padding: 7px 10px; border-radius: 999px; color: #075985; background: #e0f2fe; font-size: .78rem; font-weight: 750; }
.form-card, .result { padding: clamp(18px, 3vw, 28px); border: 1px solid #d8dee8; border-radius: 18px; background: #fff; }
.form-card { display: grid; gap: 20px; }
.choices { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
fieldset { margin: 0; padding: 0; border: 0; }
.segmented { display: flex; flex-wrap: wrap; align-content: start; gap: 8px; }
.segmented legend, .input-field > span { width: 100%; margin-bottom: 7px; font-weight: 750; }
.segmented label { position: relative; }
.segmented input { position: absolute; opacity: 0; }
.segmented span { display: block; padding: 9px 14px; border: 1px solid #bdc6d4; border-radius: 999px; cursor: pointer; }
.segmented input:checked + span { border-color: #0369a1; color: #075985; background: #e0f2fe; }
.input-field { display: grid; gap: 7px; }
.input-field textarea { width: 100%; min-height: 132px; resize: vertical; padding: 13px 14px; border: 1px solid #9ba7b8; border-radius: 10px; color: inherit; background: #fff; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 1rem; line-height: 1.55; }
.input-field small, .boundary, .result-note { color: #646b78; line-height: 1.55; }
.boundary { margin: 0; }
button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 10px 20px; border: 0; border-radius: 10px; color: #fff; background: #0369a1; cursor: pointer; font-weight: 800; }
button:hover { background: #075985; }
button.secondary { border: 1px solid #b8c4d2; color: #075985; background: #fff; }
button.secondary:hover { background: #f0f9ff; }
button:focus-visible, textarea:focus-visible, .segmented input:focus-visible + span { outline: 3px solid rgb(14 165 233 / 30%); outline-offset: 2px; }
.error { margin: 16px 0 0; padding: 14px 16px; border-left: 3px solid #b42318; color: #7a271a; background: #fff3f2; }
.error p { margin: 7px 0 0; overflow-wrap: anywhere; }
.result { display: grid; gap: 18px; margin-top: 18px; }
.result__header { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.result__header > div { display: flex; align-items: center; gap: 10px; }
.result__header h3 { margin: 0; font-size: 1.22rem; }
.step { display: grid; place-items: center; width: 30px; height: 30px; margin: 0; border-radius: 50%; color: #fff; background: #0284c7; font-weight: 850; }
.primary-output { display: block; min-height: 76px; padding: 18px; overflow-wrap: anywhere; white-space: pre-wrap; border: 1px solid #bae6fd; border-radius: 14px; color: #0c4a6e; background: #f0f9ff; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: clamp(1rem, 3vw, 1.35rem); font-weight: 750; line-height: 1.55; }
.copy-status { min-height: 1.4em; margin: -10px 0 0; color: #166534; font-size: .88rem; }
.canonical-note { display: grid; gap: 10px; padding: 14px; border-left: 3px solid #b45309; background: #fffbeb; }
.canonical-note p { margin: 0; overflow-wrap: anywhere; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.canonical-note button { justify-self: start; }
.metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin: 0; }
.metrics > div { min-width: 0; padding: 13px; border: 1px solid #e2e8f0; border-radius: 12px; background: #f8fafc; }
dt { color: #64748b; font-size: .78rem; }
dd { margin: 5px 0 0; overflow-wrap: anywhere; font-weight: 800; }
.evidence { padding: 18px; border-radius: 14px; background: #f1f5f9; }
.evidence__heading { display: flex; justify-content: space-between; gap: 16px; }
.evidence h4 { margin-bottom: 12px; }
#trace-count { color: #64748b; font-size: .78rem; }
.trace-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .88rem; }
th, td { padding: 9px 10px; border-bottom: 1px solid #dbe3ed; text-align: left; white-space: pre-wrap; overflow-wrap: anywhere; }
th { color: #475569; font-family: inherit; font-size: .75rem; text-transform: uppercase; }
.result-note { margin: 0; }
@media (max-width: 700px) { .tool__header, .result__header, .choices { display: grid; grid-template-columns: 1fr; } .privacy { justify-self: start; } .metrics { grid-template-columns: 1fr 1fr; } .result__header button { width: 100%; } }
@media (max-width: 440px) { .metrics { grid-template-columns: 1fr; } .tool { padding-inline: 14px; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; } }