/* =============================================================================
   Digitori Labs — site styles. Consumes tokens from brand.css only.
   Warm, human, generous whitespace. AA contrast throughout.
============================================================================= */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink-2);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { color: var(--ink); line-height: 1.15; margin: 0 0 .5em; }
h1, h2 { font-family: var(--font-display); font-weight: 560; letter-spacing: -.01em; }
h3, h4 { font-weight: 650; }
p { margin: 0 0 1em; }
a { color: var(--accent-strong); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
img { max-width: 100%; height: auto; }
::selection { background: var(--accent-soft); color: var(--accent-strong); }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 780px; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--hair);
}
.site-header .wrap {
  display: flex; align-items: center; gap: 28px;
  min-height: 68px;
}
.logo { display: flex; align-items: center; gap: 10px; margin-right: auto; }
.logo img { height: 38px; width: auto; display: block; }
.logo .wordmark {
  font-family: var(--font-display); font-weight: 600; font-size: 21px;
  color: var(--ink); letter-spacing: -.01em; white-space: nowrap;
}
.nav { display: flex; align-items: center; gap: 22px; }
.nav a {
  font-size: 15px; font-weight: 520; white-space: nowrap;
}
.nav a:not(.btn) { color: var(--ink-2); }
.nav a:not(.btn):hover { color: var(--ink); text-decoration: none; }
.nav a:not(.btn)[aria-current="page"] { color: var(--accent-strong); }
.btn {
  display: inline-block; padding: 11px 22px; border-radius: 10px;
  font-weight: 600; font-size: 15px; line-height: 1.2;
  background: var(--accent); color: #fff; border: 1px solid var(--accent);
  transition: background .15s ease, transform .15s ease;
}
.btn:hover { background: var(--accent-strong); text-decoration: none; transform: translateY(-1px); }
.btn.ghost { background: transparent; color: var(--accent-strong); border-color: var(--accent-softline); }
.btn.ghost:hover { background: var(--accent-soft); }
.btn.on-dark { background: var(--accent-bright); border-color: var(--accent-bright); }
.btn.ghost.on-dark { background: transparent; color: var(--dark-ink); border-color: var(--dark-line); }
.btn.ghost.on-dark:hover { background: var(--dark-2); }
.nav-toggle { display: none; }

/* ---------- shared blocks ---------- */
.eyebrow {
  font-family: var(--font-mono); font-size: 12.5px; font-weight: 500;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent-strong); margin: 0 0 14px;
}
.dark .eyebrow, .hero-dark .eyebrow { color: var(--accent-ondark); }
section { padding: 88px 0; }
.section-head { max-width: 720px; margin-bottom: 44px; }
.section-head h2 { font-size: clamp(28px, 4vw, 40px); }
.lead { font-size: 19px; color: var(--ink-2); }

/* ---------- hero ---------- */
.hero {
  padding: 64px 0 40px;
  position: relative;
  overflow: hidden;
  /* dot-grid + soft indigo glow: the "AI-era" graphic layer, kept quiet */
  background-image:
    radial-gradient(ellipse 640px 420px at 82% 8%, color-mix(in srgb, var(--accent-bright) 13%, transparent), transparent 70%),
    radial-gradient(circle at 1px 1px, var(--line) 1px, transparent 1.6px);
  background-size: auto, 26px 26px;
}
.hero::after {
  /* fade the dot grid out toward the text block so copy sits on calm paper */
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(100deg, var(--paper) 34%, transparent 78%);
}
.hero .wrap { position: relative; z-index: 1; }
.hero h1 {
  font-size: clamp(38px, 6vw, 64px);
  max-width: 15ch;
  margin-bottom: 20px;
}
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 16px; border-radius: 999px; margin-bottom: 22px;
  background: var(--accent-soft); border: 1px solid var(--accent-softline);
  font-size: 13.5px; font-weight: 600; color: var(--accent-strong);
}
.chip:hover { text-decoration: none; border-color: var(--accent-bright); }
.chip .dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--accent);
  animation: chip-pulse 2.4s ease-in-out infinite;
}
@keyframes chip-pulse { 50% { opacity: .35; } }
@media (prefers-reduced-motion: reduce) { .chip .dot { animation: none; } }

/* ---------- numbered engagement steps ---------- */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; counter-reset: step; }
.steps li {
  counter-increment: step; background: var(--card);
  border: 1px solid var(--hair); border-radius: 16px; padding: 28px;
}
.steps li::before {
  content: counter(step, decimal-leading-zero);
  display: block; font-family: var(--font-display); font-size: 40px; font-weight: 560;
  color: var(--accent); margin-bottom: 14px; line-height: 1;
}
.steps b { color: var(--ink); display: block; font-size: 18px; margin-bottom: 6px; }
.steps p { font-size: 15px; margin: 0; }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr; } }

/* ---------- product window mock (original, hand-drawn in CSS) ---------- */
.mock {
  background: #14110C; border: 1px solid var(--dark-line); border-radius: 14px;
  overflow: hidden; font-size: 12.5px;
  box-shadow: 0 24px 60px -30px rgba(0,0,0,.7);
}
.mock .bar {
  display: flex; align-items: center; gap: 6px;
  padding: 10px 14px; border-bottom: 1px solid var(--dark-line);
}
.mock .bar i { width: 9px; height: 9px; border-radius: 50%; background: var(--dark-line); }
.mock .bar span {
  margin-left: 10px; font-family: var(--font-mono); font-size: 11px;
  color: var(--dark-ink2); letter-spacing: .06em;
}
.mock .body { display: grid; grid-template-columns: 132px 1fr; min-height: 220px; }
.mock nav { border-right: 1px solid var(--dark-line); padding: 12px 0; }
.mock nav a {
  display: block; padding: 7px 14px; color: var(--dark-ink2);
  font-size: 11.5px; text-decoration: none;
}
.mock nav a.on { color: var(--accent-ondark); background: rgba(99,102,241,.12); border-right: 2px solid var(--accent-bright); }
.mock .pane { padding: 16px; }
.mock .row {
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
  padding: 9px 0; border-bottom: 1px solid var(--dark-line); color: var(--dark-ink2);
}
.mock .row b { color: var(--dark-ink); font-weight: 600; }
.mock .tag {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: .04em;
  padding: 3px 8px; border-radius: 999px; white-space: nowrap;
}
.mock .tag.cite { background: rgba(99,102,241,.16); color: var(--accent-ondark); }
.mock .tag.ok { background: rgba(74,124,89,.2); color: #A7D3B4; }
.mock .tag.gate { background: rgba(196,146,57,.16); color: #E4C078; }
/* LinkedIn links carry the brand glyph so they read as LinkedIn at a glance */
.li-link { display: inline-flex; align-items: center; gap: 7px; }
.li-link svg { flex: none; }

/* phone widths: the 132px nav column + no-wrap rows force the page wider
   than the viewport — stack the nav and let rows wrap instead */
.mock { max-width: 100%; }
@media (max-width: 640px) {
  .mock .row { flex-wrap: wrap; }
  .mock .body { grid-template-columns: 1fr; }
  .mock nav { display: flex; flex-wrap: wrap; gap: 2px; padding: 8px 10px; border-right: 0; border-bottom: 1px solid var(--dark-line); }
  .mock nav a { padding: 5px 9px; }
  .mock nav a.on { border-right: 0; border-radius: 6px; }
  .mock .bar span { white-space: normal; }
}
.hero .lead { max-width: 56ch; margin-bottom: 32px; }
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
/* fold cue: tells first-time visitors the page continues */
.scroll-cue {
  display: inline-flex; align-items: center; gap: 8px; margin-top: 34px;
  font-family: var(--font-mono); font-size: 12.5px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--ink-2);
}
.scroll-cue:hover { color: var(--accent-strong); text-decoration: none; }
.scroll-cue-arrow { display: inline-block; animation: cue-bob 1.6s ease-in-out infinite; }
@keyframes cue-bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(5px); } }
@media (prefers-reduced-motion: reduce) { .scroll-cue-arrow { animation: none; } }
html { scroll-behavior: smooth; }
.proof {
  margin-top: 64px; padding-top: 28px; border-top: 1px solid var(--hair);
  display: flex; flex-wrap: wrap; gap: 16px 44px;
}
.proof span {
  font-family: var(--font-mono); font-size: 13px; color: var(--ink-3);
  letter-spacing: .02em;
}
.proof b { color: var(--ink); font-weight: 600; }

/* ---------- cards ---------- */
.grid { display: grid; gap: 20px; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--card); border: 1px solid var(--hair); border-radius: 16px;
  padding: 28px; position: relative;
  transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}
a.card { display: block; color: inherit; }
a.card:hover {
  text-decoration: none; border-color: var(--accent-softline);
  box-shadow: 0 10px 30px -18px rgba(50, 40, 20, .35);
  transform: translateY(-2px);
}
.card h3 { font-size: 19px; margin-bottom: 8px; }
.card p { font-size: 15.5px; margin: 0; color: var(--ink-2); }
.card .go {
  display: inline-block; margin-top: 14px; font-weight: 600; font-size: 14px;
  color: var(--accent-strong);
}
.card-group-label {
  font-family: var(--font-mono); font-size: 12.5px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--ink-3); margin: 40px 0 16px;
}
.grid .card-group-label { grid-column: 1 / -1; margin: 20px 0 -4px; }

/* ---------- dark band (Cognixa) ---------- */
.dark {
  background-color: var(--dark); color: var(--dark-ink2);
  position: relative;
  /* faint node-graph motif, echoing the platform */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='560' height='560' viewBox='0 0 560 560'%3E%3Cg stroke='%236366F1' stroke-opacity='.13' fill='none'%3E%3Cpath d='M60 120 L220 80 L400 150 L520 90'/%3E%3Cpath d='M220 80 L260 300 L120 420'/%3E%3Cpath d='M400 150 L460 360 L260 300'/%3E%3C/g%3E%3Cg fill='%23A5B4FC' fill-opacity='.22'%3E%3Ccircle cx='60' cy='120' r='3'/%3E%3Ccircle cx='220' cy='80' r='4'/%3E%3Ccircle cx='400' cy='150' r='3'/%3E%3Ccircle cx='520' cy='90' r='3'/%3E%3Ccircle cx='260' cy='300' r='4'/%3E%3Ccircle cx='120' cy='420' r='3'/%3E%3Ccircle cx='460' cy='360' r='3'/%3E%3C/g%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right -60px top -40px;
}
.dark h2, .dark h3 { color: var(--dark-ink); }
.dark p { color: var(--dark-ink2); }
.dark .card {
  background: var(--dark-2); border-color: var(--dark-line);
}
.dark .card p { color: var(--dark-ink2); }
.dark a:not(.btn) { color: var(--accent-ondark); }

/* ---------- checklist / how-we-work ---------- */
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 18px; }
.checks li { padding-left: 34px; position: relative; }
.checks li::before {
  content: ""; position: absolute; left: 0; top: 4px; width: 20px; height: 20px;
  border-radius: 50%; background: var(--accent-soft);
  border: 1px solid var(--accent-softline);
}
.checks li::after {
  content: ""; position: absolute; left: 6px; top: 9px; width: 8px; height: 5px;
  border-left: 2px solid var(--accent-strong); border-bottom: 2px solid var(--accent-strong);
  transform: rotate(-45deg);
}
.checks b { color: var(--ink); display: block; margin-bottom: 2px; }
.dark .checks b { color: var(--dark-ink); }
.dark .checks li::before { background: rgba(99,102,241,.18); border-color: var(--dark-line); }
.dark .checks li::after { border-color: var(--accent-ondark); }

/* ---------- split layout ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }

/* ---------- stats ---------- */
.stats { display: flex; flex-wrap: wrap; gap: 20px 64px; margin-top: 40px; }
.stats .n {
  font-family: var(--font-display); font-size: 44px; font-weight: 560;
  color: var(--ink); display: block; line-height: 1;
}
.dark .stats .n { color: var(--dark-ink); }
.stats .l { font-size: 14px; color: var(--ink-3); }
.dark .stats .l { color: var(--dark-ink2); }

/* ---------- founder / contact strip ---------- */
.contact-strip {
  background: var(--sunken); border: 1px solid var(--hair); border-radius: 20px;
  padding: 40px; display: flex; flex-wrap: wrap; gap: 28px; align-items: center;
  justify-content: space-between;
}
.contact-strip .who b { color: var(--ink); font-size: 18px; display: block; }
.contact-strip .who span { color: var(--ink-3); font-size: 14px; }
.contact-strip .how { display: flex; flex-direction: column; gap: 4px; font-size: 16px; }
.contact-strip .how a { font-weight: 600; }

/* ---------- FAQ accordion ---------- */
.faq-item { border-bottom: 1px solid var(--hair); }
.faq-item summary {
  cursor: pointer; list-style: none; padding: 22px 40px 22px 0;
  font-weight: 620; color: var(--ink); font-size: 17px; position: relative;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  font-family: var(--font-mono); font-size: 20px; color: var(--accent-strong);
  transition: transform .18s ease;
}
.faq-item[open] summary::after { content: "–"; }
.faq-item .a { padding: 0 0 22px; max-width: 68ch; }

/* ---------- forms ---------- */
form.contact { display: grid; gap: 16px; }
form.contact label { font-size: 14px; font-weight: 600; color: var(--ink); display: grid; gap: 6px; }
form.contact input, form.contact textarea {
  font: inherit; color: var(--ink); background: var(--card);
  border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; width: 100%;
}
form.contact input:focus, form.contact textarea:focus {
  outline: 2px solid var(--accent-bright); outline-offset: 1px; border-color: var(--accent-bright);
}
.form-note { font-size: 13.5px; color: var(--ink-3); }

/* ---------- page hero (inner pages) ---------- */
.page-hero { padding: 72px 0 40px; border-bottom: 1px solid var(--hair); }
.page-hero h1 { font-size: clamp(32px, 5vw, 52px); max-width: 18ch; }
.page-hero .lead { max-width: 62ch; }
.crumb { font-family: var(--font-mono); font-size: 12.5px; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 18px; }
.crumb a { color: var(--ink-3); }

/* ---------- prose (legal) ---------- */
.prose { max-width: 72ch; }
.prose h2 { font-size: 24px; margin-top: 1.8em; }
.prose h3 { font-size: 18px; margin-top: 1.5em; }

/* ---------- CTA band ---------- */
.cta-band { padding: 96px 0; text-align: center; }
.cta-band h2 { font-size: clamp(30px, 4.5vw, 44px); max-width: 22ch; margin: 0 auto 16px; }
.cta-band p { max-width: 52ch; margin: 0 auto 30px; }

/* ---------- footer ---------- */
.site-footer {
  background: var(--dark); color: var(--dark-ink2);
  padding: 64px 0 40px; font-size: 14.5px;
}
.site-footer .cols {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 40px; margin-bottom: 48px;
}
.site-footer h4 {
  color: var(--dark-ink); font-size: 13px; letter-spacing: .1em; text-transform: uppercase;
  font-family: var(--font-mono); font-weight: 500; margin-bottom: 16px;
}
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.site-footer a { color: var(--dark-ink2); }
.site-footer a:hover { color: var(--dark-ink); }
.site-footer .fine {
  border-top: 1px solid var(--dark-line); padding-top: 24px;
  display: flex; flex-wrap: wrap; gap: 12px 32px; justify-content: space-between;
  font-size: 13px; color: var(--dark-ink2);
}
.site-footer .logo img { height: 34px; }
.site-footer .wordmark {
  font-family: var(--font-display); font-weight: 600; font-size: 20px;
  color: var(--dark-ink); white-space: nowrap;
}
.site-footer .tagline { max-width: 34ch; margin-top: 14px; }

/* ---------- reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- dark theme (see DARK-THEME-DESIGN.md for the contrast maths) ----------
   Tokens swap in brand.css; these are the values that escape the token system. */
@media (prefers-color-scheme: dark) {
  /* white button text needs the deeper indigo — #6366F1 is a hair under AA */
  .btn { background: #4F46E5; border-color: #4F46E5; }
  .btn:hover { background: #5B54E9; border-color: #5B54E9; }
  .btn.ghost { background: transparent; color: var(--accent-strong); border-color: var(--accent-softline); }
  .btn.ghost:hover { background: var(--accent-soft); }
  .btn.ghost.on-dark { color: var(--dark-ink); border-color: var(--dark-line); }
  .btn.ghost.on-dark:hover { background: var(--dark-2); }
  /* warm shadows vanish on charcoal — elevate by border instead */
  a.card:hover { box-shadow: none; border-color: var(--line); }
  /* the mock is darker than the page now — a light ring keeps its edge legible */
  .mock { border-color: rgba(243,239,230,.14); box-shadow: 0 24px 60px -30px rgba(0,0,0,.8); }
  /* glow sinks into charcoal at 13% — brighten it */
  .hero {
    background-image:
      radial-gradient(ellipse 640px 420px at 82% 8%, color-mix(in srgb, var(--accent) 21%, transparent), transparent 70%),
      radial-gradient(circle at 1px 1px, var(--line) 1px, transparent 1.6px);
    background-size: auto, 26px 26px;
  }
  /* band + footer drop below the page (#12100C via --dark); border does the edge */
  .dark, .site-footer { border-top: 1px solid var(--dark-line); }
  .site-header { border-bottom-color: var(--line); }
}

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .grid.cols-3 { grid-template-columns: 1fr 1fr; }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .site-footer .cols { grid-template-columns: 1fr 1fr; }
  .nav {
    display: none; position: absolute; top: 68px; left: 0; right: 0;
    background: var(--paper); border-bottom: 1px solid var(--hair);
    flex-direction: column; align-items: flex-start; padding: 20px 24px; gap: 18px;
  }
  .nav.open { display: flex; }
  .nav-toggle {
    display: block; background: none; border: 1px solid var(--hair); border-radius: 8px;
    padding: 8px 12px; font: inherit; color: var(--ink); cursor: pointer;
  }
}
@media (max-width: 660px) {
  section { padding: 64px 0; }
  .grid.cols-3, .grid.cols-2 { grid-template-columns: 1fr; }
  .site-footer .cols { grid-template-columns: 1fr; }
  .contact-strip { padding: 28px; }
}