/* FACE4663 Contract Identity Lab — lab.css */
:root {
  --bg: #050805;
  --panel: #091009;
  --green: #91c842;
  --green2: #b7eb68;
  --white: #f2f2ed;
  --muted: #9a9f96;
  --line: rgba(145,200,66,.25);
  --red: #ef3c22;
  --max: 1200px;
  --mono: 'IBM Plex Mono', monospace;
  --display: 'Archivo Black', sans-serif;
  --body: 'Inter', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; min-width: 320px;
  background: var(--bg); color: var(--white);
  font-family: var(--body); overflow-x: hidden;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
code {
  font-family: var(--mono);
  background: rgba(145,200,66,.08);
  padding: 2px 6px; border-radius: 3px;
  font-size: 0.9em;
}

/* Noise overlay */
.noise {
  position: fixed; inset: 0; pointer-events: none; z-index: 999;
  opacity: .035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140' viewBox='0 0 140 140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.65'/%3E%3C/svg%3E");
}

/* Header */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 100;
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 35px;
  height: 82px; padding: 0 max(28px, calc((100vw - var(--max))/2));
  border-bottom: 1px solid rgba(145,200,66,.15);
  background: rgba(5,8,5,.67); backdrop-filter: blur(14px);
}
.wordmark { font: 400 27px/1 var(--display); letter-spacing: -.045em; }
.wordmark b { color: #719b39; font-weight: 400; }
.nav {
  justify-self: center; display: flex; gap: 32px;
  font: 500 12px/1 var(--mono); text-transform: uppercase;
}
.nav a { color: #d6d8d3; transition: .2s; }
.nav a:hover { color: var(--green2); }
.hud-button {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 45px; padding: 0 22px;
  border: 1px solid rgba(145,200,66,.55); background: rgba(8,14,8,.62);
  color: var(--green2); font: 600 12px/1 var(--mono);
  text-transform: uppercase; letter-spacing: .04em;
  clip-path: polygon(7px 0,calc(100% - 7px) 0,100% 7px,100% calc(100% - 7px),calc(100% - 7px) 100%,7px 100%,0 calc(100% - 7px),0 7px);
  transition: .2s;
}
.hud-button:hover { background: rgba(145,200,66,.12); }
.hud-button.ghost { background: transparent; border-color: rgba(145,200,66,.3); color: var(--muted); }
.hud-button.ghost:hover { color: var(--green2); border-color: rgba(145,200,66,.55); }
.hud-button.disabled {
  opacity: .35; cursor: not-allowed; pointer-events: none;
}

/* Eyebrow */
.eyebrow {
  font: 600 13px/1 var(--mono); color: var(--green);
  text-transform: uppercase; letter-spacing: .06em;
  margin-bottom: 16px;
}

/* Section index */
.section-index {
  font: 500 11px/1 var(--mono); color: var(--green);
  text-transform: uppercase; letter-spacing: .08em;
  opacity: .6; margin-bottom: 24px;
}

/* Identity frame */
.identity-frame {
  border: 1px solid var(--line);
  background: rgba(9,16,9,.7);
}

/* Hex field / code rain decorations */
.hex-field, .code-rain { display: none; }

/* Section base */
.section {
  padding: 100px max(28px, calc((100vw - var(--max))/2));
  position: relative;
}
.section-head {
  margin-bottom: 48px;
}
.section-head h2 {
  font: 400 clamp(36px, 5vw, 56px)/1.1 var(--display);
  margin: 0 0 16px; letter-spacing: -.03em;
}
.section-head p {
  color: var(--muted); font-size: 15px; max-width: 560px;
}

/* ===== HERO ===== */
.lab-hero {
  padding: 160px max(28px, calc((100vw - var(--max))/2)) 80px;
  text-align: center; position: relative;
  min-height: 70vh; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
}
.lab-hero h1 {
  font: 400 clamp(42px, 7vw, 80px)/1.05 var(--display);
  margin: 0 0 24px; letter-spacing: -.03em;
}
.lab-hero-desc {
  color: var(--muted); font-size: 16px; max-width: 600px;
  margin: 0 auto 32px; line-height: 1.7;
}
.lab-hero-statement {
  display: inline-block; padding: 18px 32px;
  font: 500 14px/1.4 var(--mono); color: var(--green2);
  text-transform: uppercase; letter-spacing: .04em;
}

/* ===== FORMS ===== */
.playground-form, .calc-form, .inspector-form {
  padding: 32px; display: flex; flex-direction: column; gap: 20px;
}
.form-row { display: flex; flex-direction: column; gap: 6px; flex: 1; }
.form-row label {
  font: 600 11px/1 var(--mono); color: var(--green);
  text-transform: uppercase; letter-spacing: .06em;
}
.form-row input, .form-row select {
  background: rgba(5,8,5,.8); border: 1px solid var(--line);
  color: var(--white); font: 400 14px/1.4 var(--mono);
  padding: 12px 14px; outline: none; transition: .2s;
}
.form-row input:focus, .form-row select:focus {
  border-color: var(--green);
}
.form-row input::placeholder { color: rgba(154,159,150,.4); }
.form-row select option { background: var(--bg); color: var(--white); }
.field-hint {
  font: 400 11px/1.3 var(--mono); color: var(--muted); opacity: .7;
}
.form-row-inline {
  display: flex; gap: 20px;
}

/* Speed presets */
.speed-presets {
  display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 6px;
}
.speed-preset {
  padding: 6px 12px; border: 1px solid var(--line);
  background: transparent; color: var(--muted);
  font: 500 11px/1 var(--mono); text-transform: uppercase;
  transition: .2s;
}
.speed-preset:hover, .speed-preset.active {
  border-color: var(--green); color: var(--green2);
  background: rgba(145,200,66,.08);
}

/* ===== OUTPUT PANELS ===== */
.playground-output, .calc-results, .inspector-output {
  margin-top: 24px; padding: 32px;
}
.playground-output h3, .calc-results h3 {
  font: 600 13px/1 var(--mono); color: var(--green);
  text-transform: uppercase; letter-spacing: .06em;
  margin: 0 0 20px;
}
.result-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}
.result-item {
  display: flex; flex-direction: column; gap: 4px;
}
.result-item.full-width { grid-column: 1 / -1; }
.result-label {
  font: 600 10px/1 var(--mono); color: var(--muted);
  text-transform: uppercase; letter-spacing: .06em;
}
.result-value {
  font: 500 15px/1.3 var(--mono); color: var(--white);
  word-break: break-all;
}
.result-value.match { color: var(--green2); }
.result-value.no-match { color: var(--red); }
.result-value.valid { color: var(--green2); }
.result-value.invalid { color: var(--red); }
.mono-wrap { font-family: var(--mono); font-size: 13px; word-break: break-all; }

.disclaimer {
  margin-top: 20px; padding-top: 16px;
  border-top: 1px solid var(--line);
  font: 400 12px/1.5 var(--mono); color: var(--muted);
}
.disclaimer.warning { color: #d4a843; }

/* ===== CALCULATOR LAYOUT ===== */
.calc-layout {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
}
.calc-results {
  margin-top: 0;
}

/* ===== INSPECTOR ===== */
.inspector-output { margin-top: 24px; }

/* ===== ACCORDION ===== */
.accordion {
  display: flex; flex-direction: column; gap: 8px;
}
.acc-item { overflow: hidden; }
.acc-item summary {
  display: flex; align-items: center; gap: 16px;
  padding: 20px 24px; cursor: pointer;
  font: 600 15px/1.4 var(--body); color: var(--white);
  list-style: none; transition: .2s;
}
.acc-item summary::-webkit-details-marker { display: none; }
.acc-item summary::after {
  content: '+'; margin-left: auto;
  font: 400 20px/1 var(--mono); color: var(--green);
  transition: .2s;
}
.acc-item[open] summary::after { content: '−'; }
.acc-item summary:hover { background: rgba(145,200,66,.04); }
.acc-num {
  font: 500 11px/1 var(--mono); color: var(--green);
  text-transform: uppercase; letter-spacing: .04em;
  opacity: .7;
}
.acc-body {
  padding: 0 24px 24px; color: var(--muted); font-size: 14px; line-height: 1.7;
}
.acc-body p { margin: 0 0 12px; }
.acc-body ol, .acc-body ul {
  margin: 0 0 12px 20px; padding: 0;
}
.acc-body li { margin-bottom: 6px; }

/* Formula block */
.formula {
  padding: 16px 20px; margin: 16px 0;
  font-family: var(--mono); font-size: 13px;
  color: var(--green2); overflow-x: auto;
}

/* Learn table */
.learn-table {
  width: 100%; border-collapse: collapse; margin: 16px 0;
  font: 400 13px/1.4 var(--mono);
}
.learn-table th {
  text-align: left; padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  color: var(--green); font-weight: 600;
  text-transform: uppercase; font-size: 10px;
  letter-spacing: .06em;
}
.learn-table td {
  padding: 8px 12px; border-bottom: 1px solid rgba(145,200,66,.1);
  color: var(--muted);
}

/* Hex grid */
.hex-grid {
  display: flex; gap: 8px; flex-wrap: wrap;
  margin: 12px 0;
}
.hex-grid span {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  border: 1px solid var(--line); background: rgba(145,200,66,.05);
  font: 500 14px/1 var(--mono); color: var(--green2);
}

/* Comparison table */
.comparison-table {
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
  margin: 16px 0;
}
.comparison-col h4 {
  font: 600 14px/1 var(--mono); color: var(--green2);
  margin: 0 0 12px; text-transform: uppercase;
}
.comparison-col dl { margin: 0; }
.comparison-col dt {
  font: 600 10px/1 var(--mono); color: var(--green);
  text-transform: uppercase; letter-spacing: .04em;
  margin: 10px 0 4px;
}
.comparison-col dd {
  margin: 0; font-size: 13px; color: var(--muted);
}

/* ===== BENCHMARK ===== */
.benchmark-panel { padding: 32px; }
.benchmark-status { margin-bottom: 24px; }
.status-badge {
  display: inline-block; padding: 8px 18px;
  font: 600 12px/1 var(--mono); text-transform: uppercase;
  letter-spacing: .04em;
}
.status-badge.pending {
  background: rgba(239,60,34,.12); border: 1px solid rgba(239,60,34,.4);
  color: var(--red);
}
.benchmark-fields {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px; margin: 0 0 20px;
}
.benchmark-fields div {
  display: flex; flex-direction: column; gap: 3px;
  padding: 12px; background: rgba(5,8,5,.5);
  border: 1px solid rgba(145,200,66,.1);
}
.benchmark-fields dt {
  font: 600 10px/1 var(--mono); color: var(--green);
  text-transform: uppercase; letter-spacing: .06em;
}
.benchmark-fields dd {
  margin: 0; font: 400 14px/1.3 var(--mono); color: var(--white);
}
.pending-val { color: var(--muted) !important; font-style: italic; }

/* ===== MILESTONES ===== */
.milestones-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px; margin-bottom: 24px;
}
.milestone-card { padding: 24px; transition: .2s; }
.milestone-card:hover { border-color: var(--green); }
.milestone-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 12px;
}
.milestone-name {
  font: 400 20px/1 var(--display); color: var(--white);
}
.milestone-badge {
  font: 600 10px/1 var(--mono); text-transform: uppercase;
  letter-spacing: .06em; padding: 5px 10px;
  border: 1px solid var(--line); color: var(--muted);
}
.milestone-card.current .milestone-badge {
  border-color: var(--green); color: var(--green);
  background: rgba(145,200,66,.08);
}
.milestone-pattern {
  font: 500 15px/1.3 var(--mono); color: var(--green2);
  margin: 0 0 8px;
}
.milestone-detail {
  font-size: 13px; color: var(--muted); margin: 0 0 12px;
  line-height: 1.5;
}
.milestone-difficulty {
  display: flex; flex-direction: column; gap: 2px;
  font: 400 12px/1.3 var(--mono); color: var(--muted);
  padding-top: 12px; border-top: 1px solid var(--line);
}

/* ===== SECURITY ===== */
.security-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}
.security-card { padding: 24px; }
.security-card h3 {
  font: 600 14px/1.3 var(--mono); color: var(--green2);
  margin: 0 0 10px; text-transform: uppercase;
}
.security-card p {
  font-size: 13px; color: var(--muted); margin: 0; line-height: 1.6;
}
.warning-card { border-color: rgba(239,60,34,.25); }

/* ===== CLOSING CTA ===== */
.section-closing {
  text-align: center;
  padding: 120px max(28px, calc((100vw - var(--max))/2));
}
.section-closing h2 {
  font: 400 clamp(36px, 5vw, 64px)/1.1 var(--display);
  margin: 0 0 40px; letter-spacing: -.03em;
}
.closing-actions {
  display: flex; gap: 16px; justify-content: center;
  flex-wrap: wrap; margin-bottom: 32px;
}
.closing-disclaimer {
  font: 400 12px/1 var(--mono); color: var(--muted);
}

/* ===== FOOTER ===== */
footer {
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 20px;
  padding: 40px max(28px, calc((100vw - var(--max))/2));
  border-top: 1px solid var(--line);
}
footer p { font-size: 12px; color: var(--muted); margin: 0; }
footer > div {
  display: flex; gap: 20px;
  font: 400 11px/1 var(--mono); color: var(--muted);
}

/* ===== RESPONSIVE ===== */
@media(max-width: 1100px) {
  .nav { gap: 18px; }
  .calc-layout { grid-template-columns: 1fr; }
  .comparison-table { grid-template-columns: 1fr; }
}

@media(max-width: 760px) {
  .site-header {
    height: 68px; padding: 0 18px;
    grid-template-columns: 1fr auto;
  }
  .wordmark { font-size: 22px; }
  .header-back { display: none; }
  .nav {
    position: fixed; top: 68px; left: 0; right: 0;
    display: none; flex-direction: column; align-items: center;
    padding: 25px; background: var(--bg);
    border-bottom: 1px solid var(--line);
    gap: 20px;
  }
  .nav.open { display: flex; }
  .lab-hero { padding: 120px 18px 60px; min-height: auto; }
  .section { padding: 60px 18px; }
  .section-head h2 { font-size: clamp(32px, 8vw, 48px); }
  .form-row-inline { flex-direction: column; }
  .result-grid { grid-template-columns: 1fr 1fr; }
  .milestones-grid { grid-template-columns: 1fr; }
  .security-grid { grid-template-columns: 1fr; }
  .benchmark-fields { grid-template-columns: 1fr; }
  .comparison-table { grid-template-columns: 1fr; }
  footer { grid-template-columns: 1fr; gap: 12px; padding: 30px 18px; }
  footer > div { flex-direction: column; gap: 8px; }
}

@media(prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* Mobile menu toggle */
.menu-toggle {
  display: none; flex-direction: column; gap: 6px;
  justify-self: end; border: 0; background: none; padding: 10px;
}
.menu-toggle span {
  display: block; width: 24px; height: 1px; background: #e6e8e2;
}
@media(max-width: 760px) {
  .menu-toggle { display: flex; }
}

.calc-form .form-row.hidden{display:none}