:root {
  color-scheme: dark;
  --ink: #f8fafc;
  --muted: #9ca9ba;
  --line: #263346;
  --panel: #101925;
  --panel-raised: #152031;
  --canvas: #07101b;
  --accent: #a5ff54;
  --accent-ink: #122507;
  --alert: #ffc76e;
  --danger: #ff9179;
}

* { box-sizing: border-box; }

html { background: var(--canvas); }

body {
  margin: 0;
  min-width: 320px;
  background: radial-gradient(circle at 80% -20%, #193a40 0, transparent 29rem), var(--canvas);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button, select, textarea { font: inherit; }

.shell { width: min(1120px, calc(100% - 32px)); margin: 0 auto; padding: 26px 0 58px; }

.topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 52px; gap: 16px; }
.brand { color: var(--ink); text-decoration: none; font-weight: 760; letter-spacing: -0.04em; font-size: 1.1rem; }
.site-nav { display: flex; align-items: center; justify-content: center; gap: 18px; flex: 1; }
.site-nav a { color: var(--muted); font-size: .78rem; text-decoration: none; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--accent); }
.status { color: var(--muted); font-size: .82rem; display: inline-flex; gap: 8px; align-items: center; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); }

.detector { max-width: 980px; margin: 0 auto; }
.intro { margin-bottom: 26px; }
.eyebrow { color: var(--accent); font-size: .72rem; font-weight: 800; letter-spacing: .12em; margin: 0 0 12px; }
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(2.25rem, 6vw, 4.6rem); line-height: .98; letter-spacing: -.065em; margin-bottom: 18px; max-width: 760px; }
.lede { max-width: 650px; color: var(--muted); line-height: 1.6; font-size: 1.04rem; margin-bottom: 0; }
.privacy-proof { display: inline-flex; align-items: center; gap: 9px; margin: 18px 0 0; padding: 9px 12px; border: 1px solid #385443; border-radius: 999px; background: rgba(165, 255, 84, .07); color: #d9f4c2; font-size: .8rem; font-weight: 700; }

.workspace { display: grid; grid-template-columns: 180px 1fr; gap: 1px; border: 1px solid var(--line); background: var(--line); border-radius: 18px; overflow: hidden; box-shadow: 0 24px 80px rgba(0, 0, 0, .23); }
.controls, .editor-area { background: var(--panel); }
.controls { padding: 18px; display: flex; flex-direction: column; align-items: stretch; gap: 10px; }
.field-label { color: var(--muted); font-size: .73rem; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; }
select { color: var(--ink); background: var(--panel-raised); border: 1px solid #334259; border-radius: 9px; padding: 10px; outline: none; }
.upload { min-height: 90px; border: 1px dashed #43546d; border-radius: 10px; display: grid; place-items: center; align-content: center; gap: 7px; color: #d7dfeb; cursor: pointer; text-align: center; padding: 12px; font-size: .82rem; }
.upload:hover { border-color: var(--accent); color: var(--accent); }
.upload input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.upload-icon { font-size: 1.25rem; line-height: 1; }
.file-name { color: var(--muted); font-size: .72rem; overflow-wrap: anywhere; margin: 0; }

.editor-area { min-height: 330px; display: grid; grid-template-rows: 1fr auto; }
textarea { width: 100%; min-height: 270px; resize: vertical; color: #dce6f4; border: 0; outline: 0; background: #0b1420; padding: 22px; font: .88rem/1.6 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }
textarea::placeholder { color: #617089; }
.editor-footer { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px; border-top: 1px solid var(--line); color: var(--muted); font: .76rem ui-monospace, monospace; }
.text-button { color: var(--ink); background: transparent; border: 0; padding: 0; font-size: .8rem; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.text-button:hover { color: var(--accent); }
.scan-button { grid-column: 1 / -1; border: 0; background: var(--accent); color: var(--accent-ink); cursor: pointer; min-height: 58px; padding: 15px 20px; font-weight: 850; display: flex; justify-content: space-between; align-items: center; font-size: .98rem; }
.scan-button:hover { background: #bcff80; }

.empty-state { max-width: 600px; text-align: center; margin: 56px auto 0; color: var(--muted); }
.empty-glyph { color: var(--accent); font-size: 2.8rem; margin-bottom: 10px; }
.empty-state h2 { color: var(--ink); letter-spacing: -.04em; margin-bottom: 10px; }
.empty-state p { line-height: 1.6; }

.report { max-width: 980px; margin: 48px auto 0; padding-top: 34px; border-top: 1px solid var(--line); }
.report-heading { display: flex; justify-content: space-between; gap: 20px; align-items: start; }
.report-heading h2 { margin-bottom: 0; font-size: 2rem; letter-spacing: -.05em; }
.score-layout { display: grid; grid-template-columns: 220px 1fr; gap: 20px; margin: 24px 0; }
.score-card, .score-explainer, .panel, .notice { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; }
.score-card { padding: 22px; text-align: center; }
.score-ring { width: 136px; aspect-ratio: 1; margin: 0 auto 18px; display: grid; place-content: center; border-radius: 50%; border: 9px solid var(--accent); background: #111e23; }
.score-ring strong { font-size: 2.4rem; letter-spacing: -.08em; line-height: 1; }
.score-ring span { color: var(--muted); font-size: .74rem; margin-top: 6px; }
#score-label { color: var(--muted); line-height: 1.5; margin: 0; font-size: .84rem; }
.score-explainer { padding: 24px; }
.score-explainer h3, .panel h3 { margin-bottom: 11px; letter-spacing: -.025em; }
.score-explainer p { color: var(--muted); line-height: 1.65; margin-bottom: 12px; }
.score-explainer strong { color: var(--ink); }
.formula { padding: 12px; background: #0a131e; border-radius: 8px; color: #c6d1df !important; font: .79rem/1.5 ui-monospace, monospace; margin-bottom: 0 !important; }
.report-grid { display: grid; grid-template-columns: minmax(260px, .72fr) minmax(0, 1.28fr); gap: 20px; }
.panel { padding: 20px; min-width: 0; }
.signals { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.signals li { padding: 11px 12px; background: #0b1420; border-radius: 8px; color: #d7e0eb; font-size: .84rem; line-height: 1.45; }
.signals .weight { color: var(--accent); font: .75rem ui-monospace, monospace; float: right; margin-left: 8px; }
.code-report { border: 1px solid #253247; border-radius: 8px; overflow: auto; max-height: 460px; background: #09121c; }
.code-line { display: grid; grid-template-columns: 48px 1fr; gap: 12px; padding: 5px 12px; font: .78rem/1.55 ui-monospace, monospace; white-space: pre; }
.code-line .number { color: #6c7c93; text-align: right; user-select: none; }
.code-line.flagged { background: rgba(255, 145, 121, .12); box-shadow: inset 3px 0 0 var(--danger); }
.notice { color: var(--muted); padding: 16px 18px; margin-top: 20px; line-height: 1.55; font-size: .88rem; }
.notice strong { color: var(--alert); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

@media (max-width: 680px) {
  .shell { width: min(100% - 22px, 1120px); padding-top: 16px; }
  .topbar { margin-bottom: 38px; }
  .site-nav { order: 3; flex-basis: 100%; justify-content: flex-start; gap: 14px; }
  .topbar { flex-wrap: wrap; }
  .status { font-size: .7rem; }
  .workspace { grid-template-columns: 1fr; }
  .controls { display: grid; grid-template-columns: 1fr 1fr; align-items: start; }
  .field-label { grid-column: 1 / -1; }
  .upload { min-height: 48px; grid-column: 2; grid-row: 2 / span 2; }
  .file-name { grid-column: 1 / -1; }
  textarea { min-height: 300px; }
  .score-layout, .report-grid { grid-template-columns: 1fr; }
  .score-card { display: grid; grid-template-columns: 136px 1fr; gap: 18px; align-items: center; text-align: left; }
  .score-ring { margin: 0; }
}

.site-footer { max-width: 980px; margin: 54px auto 0; padding-top: 22px; border-top: 1px solid var(--line); display: flex; gap: 20px; align-items: center; justify-content: space-between; color: var(--muted); font-size: .8rem; }
.site-footer div { display: flex; gap: 10px; align-items: baseline; }
.site-footer strong { color: var(--ink); }
.site-footer nav { display: flex; gap: 16px; }
.site-footer a, .info-page a { color: var(--accent); text-underline-offset: 3px; }
.info-page { max-width: 780px; margin: 0 auto; }
.info-page h1 { max-width: 700px; }
.info-page .lede { max-width: 720px; margin-bottom: 34px; }
.info-section, .contact-card { padding: 22px 0; border-top: 1px solid var(--line); }
.info-section h2, .contact-card h2 { margin-bottom: 10px; letter-spacing: -.035em; font-size: 1.35rem; }
.info-section p, .contact-card p { max-width: 720px; color: var(--muted); line-height: 1.7; margin-bottom: 10px; }
.info-section p:last-child, .contact-card p:last-child { margin-bottom: 0; }
.contact-card { padding: 22px; border: 1px solid #385443; border-radius: 14px; background: rgba(165, 255, 84, .06); margin-bottom: 24px; }
.contact-card p { color: var(--ink); font-size: 1.05rem; }
@media (max-width: 680px) { .site-footer { align-items: flex-start; flex-direction: column; margin-top: 38px; } .site-footer div { flex-direction: column; gap: 3px; } .site-footer nav { flex-wrap: wrap; } .info-section, .contact-card { padding: 18px 0; } .contact-card { padding: 18px; } }