styles.css

:root {
  color-scheme: dark;
  --ink: #eef3ff;
  --muted: #9caac5;
  --surface: #11172a;
  --surface-2: #171f36;
  --surface-3: #202a45;
  --line: #2b3655;
  --violet: #a99bff;
  --cyan: #62d9ef;
  --green: #75e5b1;
  --amber: #f7c873;
  --danger: #ff9baf;
  --max: 1180px;
  --radius: 20px;
  --shadow: 0 24px 70px rgba(2, 5, 18, 0.35);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #080c19;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 0%, rgba(99, 78, 205, .26), transparent 32rem),
    radial-gradient(circle at 90% 18%, rgba(34, 161, 193, .15), transparent 30rem),
    #080c19;
  line-height: 1.55;
}
a { color: inherit; }
button, input, select { font: inherit; }
button, select { cursor: pointer; }

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  background: var(--ink);
  color: #080c19;
  padding: .75rem 1rem;
  border-radius: .5rem;
}
.skip-link:focus { top: 1rem; }

.site-header {
  width: min(calc(100% - 2rem), var(--max));
  margin: 0 auto;
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid rgba(255,255,255,.09);
}
.brand { display: inline-flex; align-items: center; gap: .7rem; text-decoration: none; font-weight: 730; }
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  color: #080c19;
  background: linear-gradient(135deg, var(--violet), var(--cyan));
}
nav { display: flex; gap: 1.4rem; }
nav a { color: var(--muted); text-decoration: none; font-size: .92rem; }
nav a:hover, nav a:focus-visible { color: var(--ink); }

main, footer { width: min(calc(100% - 2rem), var(--max)); margin-inline: auto; }
.hero { min-height: 580px; display: grid; grid-template-columns: 1.5fr .8fr; gap: clamp(2rem, 6vw, 6rem); align-items: center; padding: 5rem 0 3rem; }
.eyebrow { margin: 0 0 .8rem; text-transform: uppercase; letter-spacing: .15em; font-size: .72rem; font-weight: 800; color: var(--cyan); }
h1, h2, h3 { line-height: 1.08; letter-spacing: -.035em; margin-top: 0; }
h1 { max-width: 760px; margin-bottom: 1.4rem; font-size: clamp(3rem, 7vw, 6.2rem); }
h2 { margin-bottom: .6rem; font-size: clamp(2rem, 4vw, 3.3rem); }
h3 { font-size: 1.35rem; }
.hero-lede { max-width: 670px; color: #bac5db; font-size: clamp(1.05rem, 2vw, 1.25rem); }
.hero-actions, .export-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: .75rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: transparent;
  text-decoration: none;
  font-weight: 720;
}
.button.primary { border-color: transparent; color: #07101c; background: linear-gradient(135deg, var(--violet), var(--cyan)); }
.button:hover { transform: translateY(-1px); border-color: var(--cyan); }
.button:focus-visible, input:focus-visible, select:focus-visible, a:focus-visible { outline: 3px solid rgba(98,217,239,.46); outline-offset: 3px; }
.principle-card { position: relative; overflow: hidden; padding: 2rem; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(160deg, rgba(32,42,69,.9), rgba(17,23,42,.82)); box-shadow: var(--shadow); }
.principle-card::after { content: ""; position: absolute; inset: auto -15% -45% 25%; height: 220px; background: radial-gradient(circle, rgba(169,155,255,.25), transparent 65%); }
.signal { display: block; width: 12px; height: 12px; margin-bottom: 4.5rem; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 8px rgba(117,229,177,.1); }
.principle-label { color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .12em; }
.principle { position: relative; z-index: 1; margin: 1rem 0; font-size: 1.7rem; font-weight: 750; line-height: 1.25; }
.principle-note { position: relative; z-index: 1; color: var(--muted); }

.metrics { display: grid; grid-template-columns: repeat(4, 1fr); border-block: 1px solid var(--line); }
.metrics div { display: grid; gap: .2rem; padding: 1.6rem; border-left: 1px solid var(--line); }
.metrics div:first-child { border-left: 0; }
.metrics strong { font-size: 1.65rem; }
.metrics span { color: var(--muted); font-size: .84rem; }

.workspace, .compare-section, .recipe-section { padding: 7rem 0 1rem; }
.workspace:focus { outline: none; }
.section-heading { display: grid; grid-template-columns: 1.4fr .75fr; align-items: end; gap: 2rem; margin-bottom: 2rem; }
.section-heading > p { color: var(--muted); margin: 0 0 .65rem; }
.controls { display: grid; grid-template-columns: 1.5fr 1fr 1fr auto; gap: .8rem; padding: 1rem; border: 1px solid var(--line); border-radius: 16px; background: rgba(17,23,42,.8); }
label { display: grid; gap: .45rem; color: var(--muted); font-size: .78rem; font-weight: 700; }
input, select { min-height: 46px; width: 100%; border: 1px solid var(--line); border-radius: 10px; padding: .65rem .8rem; color: var(--ink); background: #0c1121; }
.reset { align-self: end; border-radius: 10px; }
.result-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin: 1.5rem 0 1rem; color: var(--muted); }
.result-toolbar p { margin: 0; }
.view-switch { display: inline-flex; padding: .25rem; border: 1px solid var(--line); border-radius: 999px; }
.view-button { border: 0; border-radius: 999px; color: var(--muted); background: transparent; padding: .45rem .8rem; }
.view-button.active { color: var(--ink); background: var(--surface-3); }

.evidence-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.evidence-card { display: flex; flex-direction: column; min-height: 100%; padding: 1.4rem; border: 1px solid var(--line); border-radius: 16px; background: linear-gradient(145deg, rgba(23,31,54,.94), rgba(13,18,34,.94)); }
.card-topline { display: flex; justify-content: space-between; gap: 1rem; align-items: start; }
.type-badge, .author-badge, .status-badge { display: inline-flex; width: fit-content; padding: .28rem .55rem; border-radius: 999px; font-size: .7rem; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; }
.type-badge { color: var(--cyan); background: rgba(98,217,239,.1); }
.author-badge { color: var(--violet); background: rgba(169,155,255,.1); }
.status-badge.unknown { color: var(--amber); background: rgba(247,200,115,.1); }
.evidence-card h3 { margin: 1rem 0 .6rem; }
.evidence-card h3 a { text-decoration-color: rgba(98,217,239,.45); text-underline-offset: .25rem; }
.artifact-summary { color: #b8c3d9; margin: 0 0 1rem; }
.target-list { display: flex; flex-wrap: wrap; gap: .4rem; padding: 0; margin: .3rem 0 1.2rem; list-style: none; }
.target-list li { padding: .3rem .55rem; border: 1px solid var(--line); border-radius: 7px; color: #c9d2e5; font-size: .75rem; }
.evidence-facts { display: grid; grid-template-columns: repeat(2, 1fr); gap: .8rem; margin: 0 0 1.2rem; }
.evidence-facts div { min-width: 0; }
.evidence-facts dt { color: var(--muted); font-size: .7rem; text-transform: uppercase; letter-spacing: .08em; }
.evidence-facts dd { margin: .2rem 0 0; font-size: .86rem; overflow-wrap: anywhere; }
.card-footer { display: flex; align-items: center; justify-content: space-between; gap: .8rem; margin-top: auto; padding-top: 1rem; border-top: 1px solid var(--line); }
.source-links { display: flex; flex-wrap: wrap; gap: .7rem; font-size: .82rem; }
.source-links a { color: var(--cyan); }
.compare-toggle { display: inline-flex; align-items: center; gap: .45rem; color: var(--ink); font-size: .78rem; }
.compare-toggle input { width: 18px; min-height: 18px; accent-color: var(--cyan); }

.matrix-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 16px; }
table { width: 100%; min-width: 1120px; border-collapse: collapse; background: rgba(17,23,42,.86); }
caption { padding: .8rem; color: var(--muted); text-align: left; }
th, td { padding: 1rem; border-top: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--cyan); font-size: .74rem; text-transform: uppercase; letter-spacing: .07em; }
td { color: #c4cee2; font-size: .86rem; }
.empty-state { padding: 4rem 1rem; text-align: center; border: 1px dashed var(--line); border-radius: 16px; color: var(--muted); }

.compare-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.compare-placeholder { display: grid; place-items: center; min-height: 260px; border: 1px dashed var(--line); border-radius: 16px; color: var(--muted); }
.compare-card { padding: 1.5rem; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); }
.compare-card .card-topline { margin-bottom: 1rem; flex-wrap: wrap; }
.compare-remove { padding: .45rem .8rem; font-size: .8rem; }
.compare-card dl { margin: 1.4rem 0 0; }
.compare-card dl div { padding: .85rem 0; border-top: 1px solid var(--line); }
.compare-card dt { color: var(--muted); font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; }
.compare-card dd { margin: .3rem 0 0; }

.recipe-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 1rem; }
.recipe-builder, .recipe-output { padding: 1.5rem; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); }
fieldset { padding: 0; margin: 0 0 1.5rem; border: 0; }
legend { font-size: 1.1rem; font-weight: 760; }
.field-help { margin: .3rem 0 1rem; color: var(--muted); font-size: .86rem; }
.check-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: .55rem; }
.check-option { display: flex; align-items: center; gap: .55rem; min-height: 44px; padding: .55rem .65rem; border: 1px solid var(--line); border-radius: 9px; color: var(--ink); font-size: .82rem; }
.check-option input { width: 18px; min-height: 18px; accent-color: var(--violet); }
.field-help + .check-grid { margin-bottom: .5rem; }
small { color: var(--muted); }
.recipe-output-header { display: flex; justify-content: space-between; gap: 1rem; padding-bottom: 1rem; border-bottom: 1px solid var(--line); font-weight: 720; }
.recipe-output-header span:last-child { color: var(--cyan); font-size: .82rem; }
.recipe-output ol { margin: 1rem 0 0; padding-left: 1.35rem; }
.recipe-output li { padding: .55rem 0 .7rem .3rem; color: #c8d1e4; border-bottom: 1px solid rgba(43,54,85,.55); }
.method-note { margin: 7rem 0 3rem; padding: clamp(2rem, 5vw, 4.5rem); border: 1px solid rgba(169,155,255,.38); border-radius: var(--radius); background: linear-gradient(135deg, rgba(82,62,160,.16), rgba(20,110,132,.12)); }
.method-note h2 { max-width: 850px; }
.method-note > p:last-child { max-width: 760px; color: var(--muted); }
footer { display: flex; justify-content: space-between; gap: 1rem; padding: 2rem 0 3rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .84rem; }
footer a { color: var(--cyan); }
noscript { display: block; padding: 1rem; color: #18070c; background: var(--danger); text-align: center; }

@media (max-width: 820px) {
  nav { display: none; }
  .hero { min-height: auto; grid-template-columns: 1fr; padding-top: 3.5rem; }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .metrics div:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .metrics div:nth-child(4) { border-top: 1px solid var(--line); }
  .section-heading, .recipe-layout { grid-template-columns: 1fr; }
  .controls { grid-template-columns: 1fr 1fr; }
  .search-control { grid-column: 1 / -1; }
}

@media (max-width: 620px) {
  main, footer, .site-header { width: min(calc(100% - 1.2rem), var(--max)); }
  h1 { font-size: clamp(2.7rem, 15vw, 4rem); }
  .evidence-grid, .compare-grid, .controls, .check-grid { grid-template-columns: 1fr; }
  .search-control { grid-column: auto; }
  .workspace, .compare-section, .recipe-section { padding-top: 5rem; }
  .card-topline, .card-footer, .result-toolbar, footer { align-items: flex-start; flex-direction: column; }
  .evidence-facts { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}