/* ============================================================================
   Nanohost landing page
   Ported from the Claude Design canvas "Landing.dc.html" (hero variant 1A).
   Sources: _ds/industry-.../styles.css (design-system tokens + components),
   Landing.dc.html, Sections.dc.html, CodeDiff.dc.html, PermissionsPicker.dc.html.

   The interactive widgets (before/after code, sharing picker) are implemented
   CSS-only via :has() so the page is fully functional with no JavaScript.
   ========================================================================== */

/* — Self-hosted fonts (latin subset), font-display: swap — */
@font-face {
  font-family: "Barlow"; font-style: normal; font-weight: 400; font-display: swap;
  src: url("fonts/barlow-400.woff2") format("woff2");
}
@font-face {
  font-family: "Barlow"; font-style: normal; font-weight: 500; font-display: swap;
  src: url("fonts/barlow-500.woff2") format("woff2");
}
@font-face {
  font-family: "Barlow"; font-style: normal; font-weight: 700; font-display: swap;
  src: url("fonts/barlow-700.woff2") format("woff2");
}
@font-face {
  font-family: "Barlow Condensed"; font-style: normal; font-weight: 400; font-display: swap;
  src: url("fonts/barlow-condensed-400.woff2") format("woff2");
}
@font-face {
  font-family: "Barlow Condensed"; font-style: normal; font-weight: 600; font-display: swap;
  src: url("fonts/barlow-condensed-600.woff2") format("woff2");
}

/* ── Design-system tokens ─────────────────────────────────────────────────── */
:root {
  --color-bg: #f2f2f3;
  --color-surface: #e9e9ea;
  --color-text: #1d1f20;
  --color-accent: #5980a6;
  --color-accent-2: #728fab;
  --color-divider: color-mix(in srgb, #1d1f20 16%, transparent);

  --color-neutral-100: #f5f5f8;
  --color-neutral-200: #e7e7ea;
  --color-neutral-300: #d4d4d7;
  --color-neutral-400: #b7b7ba;
  --color-neutral-500: #98989b;
  --color-neutral-600: #7a7a7d;
  --color-neutral-700: #5d5d60;
  --color-neutral-800: #424244;
  --color-neutral-900: #2b2b2d;

  --color-accent-100: #eef6ff;
  --color-accent-200: #d6ebff;
  --color-accent-300: #b5d9fd;
  --color-accent-400: #94bce3;
  --color-accent-500: #749dc4;
  --color-accent-600: #597ea3;
  --color-accent-700: #416180;
  --color-accent-800: #2c455d;
  --color-accent-900: #1d2d3d;

  --font-heading: "Barlow Condensed", system-ui, sans-serif;
  --font-heading-weight: 600;
  --font-body: "Barlow", system-ui, sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --space-1: 3.4px;
  --space-2: 6.8px;
  --space-3: 10.2px;
  --space-4: 13.6px;
  --space-6: 20.4px;
  --space-8: 27.2px;

  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 7px;

  --shadow-sm: 0 1px 2px color-mix(in srgb, #2b2b2d 14%, transparent);
  --shadow-md: 0 3px 10px color-mix(in srgb, #2b2b2d 16%, transparent);
  --shadow-lg: 0 12px 32px color-mix(in srgb, #2b2b2d 22%, transparent);
}

/* ── Base ─────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--color-neutral-300);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
  font-weight: 400;
  text-wrap: pretty;
}
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-heading-weight);
  line-height: 1.12;
  margin: 0;
}
p { margin: 0; }
img { display: block; max-width: 100%; }
figure { margin: 0; }
code { font-family: var(--font-mono); }
a { color: var(--color-accent-700); text-underline-offset: 3px; }
a:hover { color: var(--color-accent-800); }
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--color-accent-700); outline-offset: 2px; }
::selection { background: color-mix(in srgb, var(--color-accent) 30%, transparent); }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 10;
  background: var(--color-text); color: var(--color-bg);
  padding: 10px 16px; font-family: var(--font-heading); font-weight: 600;
}
.skip-link:focus { left: 8px; top: 8px; color: var(--color-bg); }

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  cursor: pointer; text-decoration: none;
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 14px; line-height: 1.2; color: var(--color-text);
  background: transparent; border: 1px solid var(--color-divider);
  padding: var(--space-2) calc(var(--space-3) * 1.2);
  border-radius: 0;
}
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
/* Primary uses accent-700 (not the lighter --color-accent) so the bg-colored
   label clears WCAG AA — 5.8:1 vs. 3.7:1. Same hue, one ramp step darker. */
.btn-primary { background: var(--color-accent-700); color: var(--color-bg); border-color: var(--color-accent-700); }
.btn-primary:hover { background: var(--color-accent-800); border-color: var(--color-accent-800); }
.btn-primary:active { background: var(--color-accent-900); border-color: var(--color-accent-900); }
.btn-secondary { border-color: var(--color-divider); }
.btn-secondary:hover { background: color-mix(in srgb, var(--color-text) 7%, transparent); }
.btn-secondary:active { background: color-mix(in srgb, var(--color-text) 14%, transparent); }
.btn-ghost { color: var(--color-accent-700); border-color: transparent; padding-inline: var(--space-1); }
.btn-ghost:hover { background: color-mix(in srgb, var(--color-accent) 10%, transparent); }
.btn-ghost:active { background: color-mix(in srgb, var(--color-accent) 18%, transparent); }
.btn-lg { min-height: 44px; padding-inline: 22px; font-size: 16px; }

/* ── Tags ─────────────────────────────────────────────────────────────────── */
.tag {
  display: inline-flex; align-items: center; font-size: 11px;
  letter-spacing: 0.02em; padding: 3px 10px; border-radius: 0;
}
.tag-outline { border: 1px solid var(--color-accent-700); color: var(--color-accent-700); }

/* ── Segmented control ────────────────────────────────────────────────────── */
.seg {
  display: inline-flex; overflow: hidden;
  border: 1px solid var(--color-divider); border-radius: 0;
}
.seg-opt {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 12px; font-size: 13px; cursor: pointer;
  font-family: var(--font-body);
}
.seg-opt + .seg-opt { border-left: 1px solid var(--color-divider); }
.seg-opt input { position: absolute; opacity: 0; width: 0; height: 0; pointer-events: none; }
/* accent-700 for AA contrast on the selected chip's bg-colored label */
.seg-opt:has(input:checked) { background: var(--color-accent-700); color: var(--color-bg); }
.seg-opt:not(:has(input:checked)):hover { background: color-mix(in srgb, var(--color-text) 7%, transparent); }
.seg-opt:has(input:focus-visible) { outline: 2px solid var(--color-accent-700); outline-offset: -2px; }

/* ── Radio ────────────────────────────────────────────────────────────────── */
.radio { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; font-size: 14px; }
.radio input { position: absolute; opacity: 0; width: 0; height: 0; pointer-events: none; }
.radio .dot {
  width: 16px; height: 16px; flex: none; border-radius: 50%;
  border: 1.5px solid var(--color-divider);
}
.radio:hover .dot { border-color: var(--color-accent-700); }
.radio input:checked + .dot {
  border-color: var(--color-accent-700); background: var(--color-accent-700);
  box-shadow: inset 0 0 0 4px var(--color-bg);
}
.radio input:focus-visible + .dot { outline: 2px solid var(--color-accent-700); outline-offset: 2px; }

/* ── Blueprint frame (wireframe registration marks) ───────────────────────── */
.blueprint { position: relative; border: 1px solid var(--color-divider); border-radius: 0; background: transparent; }
.blueprint > .corner {
  position: absolute; width: 11px; height: 11px;
  color: color-mix(in srgb, var(--color-text) 55%, transparent);
}
.blueprint > .corner::before, .blueprint > .corner::after { content: ""; position: absolute; background: currentColor; }
.blueprint > .corner::before { left: 5px; top: 0; width: 1px; height: 100%; }
.blueprint > .corner::after  { top: 5px; left: 0; width: 100%; height: 1px; }
.blueprint > .corner.tl { top: -6px; left: -6px; }
.blueprint > .corner.tr { top: -6px; right: -6px; }
.blueprint > .corner.bl { bottom: -6px; left: -6px; }
.blueprint > .corner.br { bottom: -6px; right: -6px; }

/* ── Tables ───────────────────────────────────────────────────────────────── */
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th {
  text-align: left; font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase;
  color: color-mix(in srgb, var(--color-text) 60%, transparent);
  padding: var(--space-2); border-bottom: 1px solid var(--color-divider);
}
.table td { padding: var(--space-2); border-bottom: 1px solid color-mix(in srgb, var(--color-text) 8%, transparent); }
.table tbody tr:hover { background: color-mix(in srgb, var(--color-text) 4%, transparent); }

/* ══ Page shell ═══════════════════════════════════════════════════════════ */
.page {
  max-width: 1100px; margin: 0 auto;
  background: var(--color-bg);
  border: 1px solid var(--color-divider);
  box-shadow: var(--shadow-md);
}
.wrap { max-width: 1100px; margin: 0 auto; padding-inline: clamp(20px, 5vw, 64px); }

/* utility text tokens reused across the page */
.kicker {
  display: inline-block;
  font-family: var(--font-heading); font-weight: 600;
  font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-accent-700);
}
.muted   { color: color-mix(in srgb, var(--color-text) 65%, transparent); }
.muted-2 { color: color-mix(in srgb, var(--color-text) 72%, transparent); }
.lead {
  font-size: 17px; line-height: 1.55;
  color: color-mix(in srgb, var(--color-text) 82%, transparent);
}

/* ── Nav ──────────────────────────────────────────────────────────────────── */
.site-nav { border-bottom: 1px solid var(--color-divider); }
.site-nav .wrap {
  display: flex; align-items: center; gap: 22px;
  padding-block: 14px;
}
.brand {
  font-family: var(--font-heading); font-weight: 600; font-size: 20px;
  letter-spacing: 0.02em; text-transform: uppercase; text-decoration: none;
  color: var(--color-text);
}
.nav-link { font-size: 14px; text-decoration: none; color: var(--color-text); }
.nav-link:hover { color: var(--color-accent-700); }
.nav-link.push { margin-left: auto; }

/* ── Hero ─────────────────────────────────────────────────────────────────── */
.hero .wrap { padding-block: clamp(44px, 6vw, 80px) clamp(40px, 5vw, 64px); }
.hero h1 {
  font-size: clamp(42px, 4.6vw, 74px); line-height: 1.02; letter-spacing: 0.01em;
  text-transform: uppercase; margin: 18px 0 0;
}
.hero h1 span { display: block; }
.hero h1 .accent { color: var(--color-accent-700); }
.hero-lead { max-width: 56ch; margin: 22px 0 0; font-size: 18px; line-height: 1.5;
  color: color-mix(in srgb, var(--color-text) 84%, transparent); }
.cta-row { display: flex; gap: 14px; flex-wrap: wrap; margin: 26px 0 8px; }
.hero-fine { font-size: 13.5px; margin: 0 0 34px; }
.hero-grid {
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px); align-items: stretch;
}
.hero-grid > * { min-width: 0; }
.hero-grid-col { display: flex; flex-direction: column; gap: 20px; min-width: 0; }

/* ── Manifest figure ──────────────────────────────────────────────────────── */
.manifest { display: flex; flex-direction: column; min-width: 0; }
.manifest pre { min-width: 0; }
.manifest-cap {
  padding: 10px 14px; border-bottom: 1px solid var(--color-divider);
  font-family: var(--font-heading); font-weight: 600; font-size: 12px;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: color-mix(in srgb, var(--color-text) 65%, transparent);
}
.manifest pre { margin: 0; padding: 14px; font-family: var(--font-mono);
  font-size: 13px; line-height: 1.7; color: var(--color-text); overflow-x: auto; }
.manifest-note {
  margin: 0; padding: 10px 14px; border-top: 1px solid var(--color-divider);
  font-size: 13px; line-height: 1.4;
  color: color-mix(in srgb, var(--color-text) 70%, transparent);
}
.manifest-note code { font-size: 12px; }

/* ── CodeDiff widget (CSS-only before/after) ─────────────────────────────── */
/* min-width:0 lets the flex column and its panels shrink below the code's
   intrinsic width so the <pre> scrolls internally instead of widening the page. */
.codediff { display: flex; flex-direction: column; min-width: 0; }
.cd-panel { min-width: 0; }
.codediff-head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  flex-wrap: wrap; padding: 14px 16px; border-bottom: 1px solid var(--color-divider);
}
.codediff-title { font-family: var(--font-heading); font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.04em; font-size: 15px; }
.cd-meta {
  display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap;
  padding: 10px 16px; border-bottom: 1px solid var(--color-divider);
}
.cd-state { font-family: var(--font-heading); font-weight: 600; font-size: 13px;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-accent-700); }
.cd-note { font-size: 13px; color: color-mix(in srgb, var(--color-text) 65%, transparent); }
.cd-code {
  margin: 0; padding: 18px 16px 20px; font-family: var(--font-mono);
  font-size: 12.5px; line-height: 1.75; white-space: pre; overflow-x: auto;
  min-width: 0; min-height: 120px;
}
.cd-code--before { color: color-mix(in srgb, var(--color-text) 62%, transparent);
  border-left: 3px solid var(--color-neutral-400); background: transparent; }
.cd-code--after  { color: var(--color-text);
  border-left: 3px solid var(--color-accent); background: var(--color-accent-100); }
/* default: Before shown; After hidden. Toggle on the "after" radio. */
.cd-panel--after { display: none; }
.codediff:has(.cd-radio--after:checked) .cd-panel--after { display: block; }
.codediff:has(.cd-radio--after:checked) .cd-panel--before { display: none; }

/* ── PermissionsPicker widget (CSS-only status swap) ─────────────────────── */
.perm { padding: 20px; }
.perm-head { display: flex; align-items: center; justify-content: space-between;
  gap: 12px; margin-bottom: 16px; }
.perm-title { font-family: var(--font-heading); font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.04em; font-size: 16px; }
.perm-opts { display: flex; flex-direction: column; gap: 2px; }
.perm-opt { justify-content: flex-start; gap: 12px; padding: 11px 12px;
  border: 1px solid var(--color-divider); font-size: 15px; }
.perm-status {
  display: none; margin: 16px 0 0; padding-top: 14px;
  border-top: 1px solid var(--color-divider);
  font-size: 14px; line-height: 1.5;
  color: color-mix(in srgb, var(--color-text) 78%, transparent);
}
.perm-status-head { font-family: var(--font-heading); font-weight: 600;
  color: var(--color-accent-700); text-transform: uppercase;
  letter-spacing: 0.04em; font-size: 13px; }
.perm:has(.perm-radio--me:checked) .perm-status--me { display: block; }
.perm:has(.perm-radio--people:checked) .perm-status--people { display: block; }
.perm:has(.perm-radio--org:checked) .perm-status--org { display: block; }

/* ── Sections ─────────────────────────────────────────────────────────────── */
.section { padding-block: clamp(46px, 6vw, 84px); border-top: 1px solid var(--color-divider); }
.section-rule { height: 1px; border: 0; background: var(--color-divider); margin: 0 0 24px; }
.section-title {
  font-size: clamp(30px, 4vw, 46px); line-height: 1.02; letter-spacing: 0.01em;
  text-transform: uppercase; margin: 0;
}
.section-kicker { margin: 0 0 12px; }
.section-lead { max-width: 60ch; margin: 24px 0 0; font-size: 17px; }

.grid-auto { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: clamp(20px, 3vw, 40px); align-items: stretch; }
.grid-auto-wide { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

/* Step / catalog cards */
.step { padding: 22px; }
.step-num { font-family: var(--font-heading); font-weight: 600; font-size: 13px;
  letter-spacing: 0.08em; color: var(--color-accent-700); }
.step h3, .card-h3 { font-size: 24px; text-transform: uppercase; letter-spacing: 0.02em; margin: 8px 0 10px; }
.step p, .card-p { font-size: 15px; line-height: 1.5;
  color: color-mix(in srgb, var(--color-text) 80%, transparent); margin: 0; }

/* "What you don't write" lists */
.deny-col-title { font-family: var(--font-heading); font-weight: 600; font-size: 15px;
  letter-spacing: 0.06em; text-transform: uppercase; margin: 0 0 14px; }
.deny-list { list-style: none; margin: 0; padding: 0; }
.deny-list li { padding: 13px 0; border-bottom: 1px solid var(--color-divider);
  font-size: 15px; line-height: 1.45; }
.deny-list li:last-child { border-bottom: 0; }
.deny-list strong { font-weight: 700; }
.deny-list code { font-size: 13px; }
.contract { list-style: none; margin: 0; padding: 0; counter-reset: c; }
.contract li { padding: 11px 0 11px 34px; border-bottom: 1px solid var(--color-divider);
  font-size: 15px; line-height: 1.4; position: relative; }
.contract li:last-child { border-bottom: 0; }
.contract li::before {
  content: counter(c, decimal-leading-zero); counter-increment: c;
  position: absolute; left: 0; top: 11px;
  font-family: var(--font-heading); font-weight: 600; font-size: 13px;
  color: var(--color-accent-700);
}
.contract code { font-size: 13px; }
.callout {
  margin: 22px 0 0; padding: 16px 18px; font-size: 15px; line-height: 1.5;
  background: var(--color-accent-100); border-left: 3px solid var(--color-accent);
}
.callout strong { font-weight: 700; }

.two-col { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(24px, 4vw, 56px); }

/* Security grid */
.sec-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 0 clamp(24px, 4vw, 56px); }
.sec-item { padding: 15px 0; border-top: 1px solid var(--color-divider);
  font-size: 15px; line-height: 1.5; }
.sec-item strong { font-weight: 700; }
.sec-item.full { grid-column: 1 / -1; border-bottom: 1px solid var(--color-divider); }

/* Objections */
.objection { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  gap: 8px clamp(24px, 4vw, 56px); padding: 24px 0; border-top: 1px solid var(--color-divider); }
.objection:last-child { border-bottom: 1px solid var(--color-divider); }
.objection h3 { font-size: 22px; text-transform: uppercase; letter-spacing: 0.01em; line-height: 1.1; }
.objection p { font-size: 16px; line-height: 1.5;
  color: color-mix(in srgb, var(--color-text) 84%, transparent); }

/* Existing-app section helpers */
.note-cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(20px, 3vw, 40px); margin-bottom: 34px; }
.note-cols p { font-size: 15px; line-height: 1.55;
  color: color-mix(in srgb, var(--color-text) 82%, transparent); }
.audit-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.audit-hint { font-size: 14px; line-height: 1.4; max-width: 40ch;
  color: color-mix(in srgb, var(--color-text) 70%, transparent); }

/* Final CTA */
.final-title { font-size: clamp(34px, 5vw, 58px); line-height: 1.0; }

/* Footer */
.site-footer { border-top: 1px solid var(--color-divider); }
.site-footer .wrap { padding-block: 28px; font-size: 13px;
  color: color-mix(in srgb, var(--color-text) 65%, transparent); }

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 860px) {
  /* minmax(0,1fr) — bare 1fr resolves to minmax(auto,1fr) and can't shrink
     below the code block's intrinsic width, forcing horizontal overflow. */
  .hero-grid { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 620px) {
  .site-nav .wrap { flex-wrap: wrap; gap: 12px 18px; }
  .nav-link.push { margin-left: auto; }
  .objection { grid-template-columns: 1fr; }
  .sec-grid { grid-template-columns: 1fr; }
}

/* Respect reduced-motion (no essential motion here, but keep it honest) */
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
}