/* Cognielo marketing site — shared CSS
   One source of truth for every page under /marketing/landing/.
   Patent Pending — U.S. App. No. 64/041,821                      */

:root {
  --violet: #6A0DAD;
  --violet-deep: #3A1B5F;
  --violet-bright: #8A3FD1;
  --bg: #0A0415;
  --fg: #F8F4FD;
  --dim: rgba(248, 244, 253, 0.65);
  --card: rgba(138, 63, 209, 0.08);
  --card-border: rgba(138, 63, 209, 0.22);
  --mono: ui-monospace, 'SF Mono', Menlo, monospace;
  --sans: -apple-system, BlinkMacSystemFont, 'SF Pro Display', system-ui, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--fg); font: 17px/1.55 var(--sans); }
a { color: var(--violet-bright); text-decoration: none; }
a:hover { color: var(--fg); }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 32px; }

/* ————————— NAV ————————— */
nav.site {
  position: sticky; top: 0; z-index: 10;
  background: rgba(10, 4, 21, 0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  padding: 18px 0;
  border-bottom: 1px solid rgba(138, 63, 209, 0.12);
}
nav.site .wrap { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
nav.site .brand { font-size: 22px; font-weight: 700; letter-spacing: -0.02em; white-space: nowrap; color: var(--fg); }
nav.site .brand::before { content: '◦ '; color: var(--violet-bright); }
nav.site .links { display: flex; gap: 28px; font-size: 14px; color: var(--dim); }
nav.site .cta {
  background: linear-gradient(180deg, var(--violet-bright), var(--violet));
  color: white; padding: 10px 20px; border-radius: 999px;
  font-size: 14px; font-weight: 600; white-space: nowrap;
}

@media (max-width: 720px) {
  nav.site .links { display: none; }
  nav.site .cta { padding: 9px 14px; font-size: 13px; }
}
@media (max-width: 420px) {
  nav.site { padding: 14px 0; }
  .wrap { padding: 0 20px; }
}

/* ————————— HERO ————————— */
.hero {
  padding: 120px 0 80px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: -10% -20% 50% -20%;
  background: radial-gradient(ellipse at top, rgba(138, 63, 209, 0.40), transparent 60%);
  pointer-events: none;
}
.hero .wrap { position: relative; z-index: 1; }
.hero h1 {
  font-size: clamp(40px, 6vw, 84px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0 0 24px;
  font-weight: 700;
  max-width: 14ch;
}
.hero h1 .underline {
  background: linear-gradient(180deg, transparent 65%, rgba(138, 63, 209, 0.45) 65%);
  padding: 0 4px;
}
.hero .sub {
  font-size: clamp(17px, 2vw, 22px);
  color: var(--dim);
  max-width: 56ch;
  margin-bottom: 44px;
  line-height: 1.45;
}
.hero .ctas { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 32px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 26px; border-radius: 999px;
  font-size: 16px; font-weight: 600;
  transition: transform 0.18s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: linear-gradient(180deg, var(--violet-bright), var(--violet));
  color: white;
  box-shadow: 0 8px 32px rgba(106, 13, 173, 0.35);
}
.btn-ghost {
  border: 1px solid rgba(138, 63, 209, 0.4);
  color: var(--fg);
}

.trust {
  display: flex; gap: 24px; font-size: 13px; color: var(--dim); flex-wrap: wrap;
}
.trust span::before { content: '✓  '; color: var(--violet-bright); }

/* ————————— SECTION ————————— */
section { padding: 100px 0; border-top: 1px solid rgba(138, 63, 209, 0.08); }
@media (max-width: 420px) {
  .hero { padding: 64px 0 56px; }
  section { padding: 64px 0; }
}
section h2 {
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.025em;
  margin: 0 0 24px;
  font-weight: 700;
}
section .kicker {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--violet-bright);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}
section .lede {
  font-size: 20px;
  color: var(--dim);
  max-width: 62ch;
  margin-bottom: 48px;
  line-height: 1.55;
}

/* ————————— CARDS / GRID ————————— */
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; margin-top: 48px; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 24px; margin-top: 48px; }
.feature {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 32px 28px;
}
.feature .icon {
  width: 52px; height: 52px;
  background: linear-gradient(180deg, var(--violet-bright), var(--violet));
  border-radius: 14px;
  display: grid; place-items: center;
  font-size: 24px;
  margin-bottom: 20px;
  box-shadow: 0 8px 24px rgba(106, 13, 173, 0.35);
}
.feature h3 { font-size: 20px; margin: 0 0 10px; font-weight: 600; }
.feature p { color: var(--dim); margin: 0; font-size: 15px; line-height: 1.55; }

/* ————————— TABLE / COMPARISON ————————— */
table.cmp {
  width: 100%;
  border-collapse: collapse;
  margin-top: 32px;
  font-size: 14px;
}
table.cmp th, table.cmp td {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(138,63,209,0.12);
  text-align: left;
  vertical-align: top;
}
table.cmp th { font-weight: 600; color: var(--dim); font-size: 13px; }
table.cmp tr:hover td { background: rgba(138,63,209,0.05); }

/* ————————— LAYER ARCHITECTURE ————————— */
.layers {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 48px;
}
.layer {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  padding: 24px 28px;
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  align-items: center;
}
.layer .label {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--violet-bright);
}
.layer h3 { margin: 0 0 6px; font-size: 20px; font-weight: 600; }
.layer p { margin: 0; color: var(--dim); font-size: 15px; line-height: 1.5; }
.layer.hub     { background: linear-gradient(170deg, rgba(138,63,209,0.22), rgba(138,63,209,0.06)); }
.layer.substrate { background: linear-gradient(170deg, rgba(138,63,209,0.18), rgba(138,63,209,0.05)); }
.layer.tool    { background: linear-gradient(170deg, rgba(138,63,209,0.14), rgba(138,63,209,0.04)); }
.layer.data    { background: linear-gradient(170deg, rgba(138,63,209,0.10), rgba(138,63,209,0.03)); }
@media (max-width: 560px) {
  .layer { grid-template-columns: 1fr; gap: 8px; padding: 18px 20px; }
}

/* ————————— DOC / LONG-COPY SURFACES ————————— */
article.doc {
  max-width: 780px;
  margin: 0 auto;
  padding: 80px 32px;
}
article.doc h1 {
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}
article.doc .meta {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--dim);
  margin-bottom: 48px;
}
article.doc h2 {
  font-size: 24px;
  margin: 48px 0 16px;
  font-weight: 600;
  color: var(--violet-bright);
}
article.doc h3 {
  font-size: 18px;
  margin: 32px 0 12px;
  font-weight: 600;
}
article.doc p,
article.doc li {
  font-size: 16px;
  line-height: 1.65;
  color: var(--fg);
}
article.doc p { margin: 0 0 16px; }
article.doc ul, article.doc ol { padding-left: 22px; }
article.doc li { margin-bottom: 8px; }
article.doc code {
  font-family: var(--mono);
  font-size: 14px;
  background: rgba(138,63,209,0.12);
  padding: 1px 6px;
  border-radius: 4px;
}
article.doc blockquote {
  margin: 32px 0;
  padding: 16px 24px;
  border-left: 3px solid var(--violet-bright);
  background: var(--card);
  border-radius: 8px;
  color: var(--dim);
  font-style: italic;
}

/* ————————— FOOTER ————————— */
footer.site {
  padding: 80px 0 60px;
  border-top: 1px solid rgba(138, 63, 209, 0.15);
  color: var(--dim);
  font-size: 14px;
}
footer.site .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 32px; }
footer.site .brand { font-size: 20px; font-weight: 700; color: var(--fg); }
footer.site nav.foot { display: flex; flex-direction: column; gap: 8px; }
footer.site .patent { font-family: var(--mono); font-size: 12px; }