/* ═══════════════════════════════════════════════════════════════════
   KrisVen — Enterprise Governed Memory Platform
   styles.css · static site · no build tools · Krishnaven LLC
   ═══════════════════════════════════════════════════════════════════ */

/* ── Variables ──────────────────────────────────────────────────── */
:root {
  --ink:         #0B1220;
  --ink-soft:    #364B63;
  --muted:       #64748B;
  --bg:          #F4F7FB;
  --surface:     #FFFFFF;
  --border:      #CBD5E1;
  --border-soft: #E2E8F0;

  --accent:      #1A4FD6;
  --accent-mid:  #2563EB;
  --accent-dk:   #1239A8;
  --accent-lt:   #EEF4FF;
  --accent-pale: #F0F5FF;

  --hero-bg:     #050D1C;
  --hero-surf:   #0C1829;
  --hero-border: #172543;

  --green:       #047857;
  --green-bg:    #D1FAE5;
  --green-ink:   #064E3B;
  --amber:       #B45309;
  --amber-bg:    #FEF3C7;
  --red-ink:     #7F1D1D;
  --teal:        #0891B2;
  --teal-bg:     #ECFEFF;
  --teal-ink:    #164E63;

  --code-bg:     #0D1117;
  --code-fg:     #C9D1D9;
  --code-kw:     #7EE787;
  --code-str:    #A5D6FF;
  --code-cm:     #6E7681;

  --nav-h:       58px;
  --max-w:       1060px;
  --max-narrow:  820px;
  --radius:      8px;
  --radius-lg:   12px;
  --transition:  0.15s ease;
}

/* ── Reset ──────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: system-ui, -apple-system, 'Segoe UI', Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
button { font: inherit; cursor: pointer; }

/* ── Utility ────────────────────────────────────────────────────── */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.section {
  padding: 5rem 1.75rem;
}
.section-inner  { max-width: var(--max-w);      margin: 0 auto; }
.section-narrow { max-width: var(--max-narrow);  margin: 0 auto; }
.eyebrow {
  font-size: .65rem; font-weight: 700;
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--accent); margin-bottom: .55rem;
}
.eyebrow.light { color: #60A5FA; }
.section-h {
  font-size: clamp(1.45rem, 3vw, 2rem);
  font-weight: 800; letter-spacing: -.035em;
  color: var(--ink); line-height: 1.15;
}
.section-h.light { color: #fff; }
.section-sub {
  font-size: .95rem; color: var(--ink-soft);
  max-width: 580px; margin-top: .65rem; line-height: 1.75;
}
.section-sub.light { color: #94A3B8; }
code {
  font-family: 'Menlo', 'Consolas', 'Monaco', monospace;
  font-size: .8em; background: var(--accent-lt);
  color: var(--accent); padding: .1em .35em; border-radius: 3px;
}
.check  { color: var(--green);  font-weight: 700; }
.partial{ color: var(--amber);  font-weight: 700; }
.cross  { color: #DC2626;       font-weight: 700; }

/* ── Navigation ─────────────────────────────────────────────────── */
.topnav {
  position: sticky; top: 0; z-index: 200; height: var(--nav-h);
  background: rgba(5,13,28,.95); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--hero-border);
  display: flex; align-items: center;
  justify-content: space-between; padding: 0 1.75rem;
}
.nav-brand {
  display: flex; align-items: center; gap: .55rem;
  text-decoration: none;
}
.nav-brand-mark {
  width: 30px; height: 30px; border-radius: 8px;
  background: linear-gradient(135deg, #1A4FD6, #3B82F6);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 900; color: #fff;
  letter-spacing: -.02em; flex-shrink: 0;
}
.nav-brand-name { font-size: .92rem; font-weight: 700; color: #fff; }
.nav-brand-by   { font-size: .68rem; color: #475569; margin-left: .1rem; }
.nav-links {
  display: flex; gap: .15rem; align-items: center;
}
.nav-a {
  font-size: .78rem; color: #94A3B8; text-decoration: none;
  padding: .32rem .7rem; border-radius: 5px; white-space: nowrap;
  transition: color var(--transition), background var(--transition);
}
.nav-a:hover { color: #fff; background: rgba(255,255,255,.07); }
.nav-cta {
  font-size: .78rem; font-weight: 600; color: #fff;
  background: var(--accent); border: none;
  border-radius: 6px; padding: .38rem .9rem;
  text-decoration: none;
  transition: background var(--transition);
}
.nav-cta:hover { background: var(--accent-mid); }
.nav-ham {
  display: none; background: none; border: none;
  padding: .4rem; color: #94A3B8;
}
@media (max-width: 700px) {
  .nav-links {
    display: none;
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    background: #050D1C;
    border-bottom: 1px solid var(--hero-border);
    flex-direction: column; align-items: stretch;
    padding: .75rem 1rem; gap: .25rem; z-index: 199;
  }
  .nav-links.open { display: flex; }
  .nav-a { padding: .55rem .75rem; }
  .nav-ham { display: block; }
}

/* ── Buttons ────────────────────────────────────────────────────── */
.btn-primary {
  display: inline-block; font-size: .88rem; font-weight: 700;
  color: #fff; background: var(--accent); border: none;
  border-radius: 7px; padding: .65rem 1.5rem; text-decoration: none;
  transition: background var(--transition);
}
.btn-primary:hover { background: var(--accent-mid); }
.btn-ghost {
  display: inline-block; font-size: .88rem; font-weight: 600;
  color: #94A3B8; border: 1px solid var(--hero-border);
  border-radius: 7px; padding: .65rem 1.4rem; text-decoration: none;
  background: transparent;
  transition: color var(--transition), border-color var(--transition);
}
.btn-ghost:hover { color: #fff; border-color: #3B82F6; }
.btn-white {
  display: inline-block; font-size: .88rem; font-weight: 700;
  color: var(--accent); background: #fff; border: none;
  border-radius: 7px; padding: .65rem 1.5rem; text-decoration: none;
  transition: opacity var(--transition);
}
.btn-white:hover { opacity: .9; }
.btn-outline-white {
  display: inline-block; font-size: .88rem; font-weight: 600;
  color: #fff; border: 2px solid rgba(255,255,255,.5);
  border-radius: 7px; padding: .65rem 1.4rem; text-decoration: none;
  background: transparent;
  transition: border-color var(--transition);
}
.btn-outline-white:hover { border-color: #fff; }

/* ── Hero ───────────────────────────────────────────────────────── */
.hero {
  background: var(--hero-bg);
  padding: 5.5rem 1.75rem 5rem;
  text-align: center;
  position: relative; overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 72% 55% at 50% -5%, rgba(26,79,214,.22) 0%, transparent 65%);
  pointer-events: none;
}
.hero-eyebrow {
  font-size: .68rem; font-weight: 700;
  letter-spacing: .18em; text-transform: uppercase;
  color: #60A5FA; margin-bottom: 1.1rem;
}
.hero-h1 {
  font-size: clamp(1.9rem, 5.5vw, 3.5rem);
  font-weight: 900; letter-spacing: -.04em;
  line-height: 1.09; color: #fff;
  margin: 0 auto 1.3rem; max-width: 780px;
}
.hero-h1 em { color: #60A5FA; font-style: normal; }
.hero-p {
  font-size: 1.05rem; color: #94A3B8;
  max-width: 580px; margin: 0 auto 2rem; line-height: 1.75;
}
.hero-ctas {
  display: flex; flex-wrap: wrap; gap: .75rem;
  justify-content: center; margin-bottom: .9rem;
}
.hero-contact { font-size: .78rem; color: #475569; margin-top: .5rem; }
.hero-contact a { color: #60A5FA; text-decoration: none; }
.hero-contact a:hover { text-decoration: underline; }
.hero-tags {
  display: flex; flex-wrap: wrap; gap: .5rem;
  justify-content: center; margin-top: 2.5rem;
}
.hero-tag {
  font-size: .72rem; font-weight: 500; color: #64748B;
  border: 1px solid var(--hero-border);
  border-radius: 20px; padding: .28rem .75rem;
  background: rgba(255,255,255,.03);
}
.hero-stats {
  display: flex; flex-wrap: wrap; justify-content: center;
  border-top: 1px solid var(--hero-border);
  border-bottom: 1px solid var(--hero-border);
  background: rgba(12,24,41,.55);
  margin-top: 3.5rem;
}
.stat {
  flex: 1; min-width: 140px; max-width: 220px;
  padding: 1.1rem; text-align: center;
  border-right: 1px solid var(--hero-border);
}
.stat:last-child { border-right: none; }
.stat-val {
  font-size: 1.3rem; font-weight: 800; color: #fff;
  letter-spacing: -.03em; line-height: 1.1;
}
.stat-lbl {
  font-size: .65rem; color: #64748B;
  letter-spacing: .07em; text-transform: uppercase; margin-top: .25rem;
}

/* ── Problem ────────────────────────────────────────────────────── */
.problem { background: #fff; border-bottom: 1px solid var(--border-soft); }
.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem; margin-top: 2.5rem;
}
.problem-card {
  border: 1px solid var(--border-soft); border-radius: var(--radius);
  padding: 1.4rem 1.25rem; background: var(--bg);
  border-left: 3px solid transparent;
  transition: border-left-color var(--transition);
}
.problem-card:hover { border-left-color: var(--accent); }
.problem-icon  { font-size: 1.3rem; margin-bottom: .75rem; }
.problem-title { font-size: .88rem; font-weight: 700; color: var(--ink); margin-bottom: .4rem; }
.problem-desc  { font-size: .82rem; color: var(--ink-soft); line-height: 1.65; }

/* ── Solution capabilities ──────────────────────────────────────── */
.solution { background: var(--bg); border-bottom: 1px solid var(--border-soft); }
.cap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: .85rem; margin-top: 2rem;
}
.cap {
  background: var(--surface); border: 1px solid var(--border-soft);
  border-radius: 7px; padding: 1rem 1.1rem;
  display: flex; align-items: flex-start; gap: .65rem;
}
.cap-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent); flex-shrink: 0; margin-top: .45rem;
}
.cap-text { font-size: .82rem; color: var(--ink-soft); line-height: 1.5; }
.cap-text strong {
  color: var(--ink); display: block;
  margin-bottom: .15rem; font-size: .85rem;
}

/* ── Feature grid ───────────────────────────────────────────────── */
.features { background: #fff; border-bottom: 1px solid var(--border-soft); }
.feat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem; margin-top: 2.5rem;
}
.feat-card {
  border: 1px solid var(--border); border-radius: 10px;
  padding: 1.5rem; background: var(--surface);
  position: relative; overflow: hidden;
}
.feat-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), #60A5FA);
}
.feat-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 8px;
  background: var(--accent-lt);
  font-size: .75rem; font-weight: 800; color: var(--accent);
  margin-bottom: .85rem;
}
.feat-title { font-size: .95rem; font-weight: 700; color: var(--ink); margin-bottom: .45rem; }
.feat-desc  { font-size: .82rem; color: var(--ink-soft); line-height: 1.65; }

/* ── Pipeline animation ─────────────────────────────────────────── */
.pipeline {
  background: var(--hero-bg);
  border-bottom: 1px solid var(--hero-border);
}
.pipeline-canvas-wrap {
  overflow-x: auto; border: 1px solid var(--hero-border);
  border-radius: 10px; background: #040A15; margin-bottom: 1rem;
}
.pipeline-canvas-wrap canvas {
  display: block; max-width: 100%; min-width: 540px;
}
.pipeline-status {
  display: flex; align-items: center; gap: 1rem;
  background: rgba(255,255,255,.035);
  border: 1px solid var(--hero-border); border-radius: 7px;
  padding: .8rem 1.1rem; min-height: 52px;
}
.pipeline-badge {
  font-size: .62rem; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; padding: .3em .7em; border-radius: 4px;
  flex-shrink: 0; background: var(--accent); color: #fff;
  transition: background .3s;
}
.pipeline-info   { flex: 1; min-width: 0; }
.pipeline-stage  { font-size: .9rem; font-weight: 700; color: #fff; line-height: 1.3; }
.pipeline-sub    { font-size: .78rem; color: #475569; margin-top: .1rem; }
.pipeline-num    { font-size: .72rem; color: #1E3A5F; font-weight: 600; flex-shrink: 0; }
.pipeline-legend {
  display: flex; flex-wrap: wrap; gap: .75rem;
  padding: .75rem 1rem; margin-top: 1rem;
  background: rgba(255,255,255,.02);
  border: 1px solid var(--hero-border); border-radius: 6px;
}
.legend-item {
  display: flex; align-items: center; gap: .4rem;
  font-size: .72rem; color: #475569;
}
.legend-dot {
  display: inline-block; width: 10px; height: 10px; border-radius: 50%;
}

/* ── Architecture ───────────────────────────────────────────────── */
.architecture { background: var(--hero-bg); border-bottom: 1px solid var(--hero-border); }
.diagram-wrap {
  overflow-x: auto; border: 1px solid var(--hero-border);
  border-radius: var(--radius); background: #0C1829;
  margin: 2rem 0 1.5rem;
}
.diagram-cap {
  font-size: .72rem; color: #475569; letter-spacing: .05em;
  text-align: center; padding: .55rem 1rem .8rem;
  border-top: 1px solid var(--hero-border);
}
.arch-layers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem; margin-top: 2rem;
}
.arch-layer {
  background: rgba(255,255,255,.04); border: 1px solid var(--hero-border);
  border-radius: var(--radius); padding: 1.1rem 1rem;
}
.arch-layer-label {
  font-size: .62rem; font-weight: 700; letter-spacing: .14em;
  text-transform: uppercase; color: #60A5FA; margin-bottom: .6rem;
}
.arch-item {
  font-size: .78rem; color: #94A3B8; padding: .18rem 0;
  border-bottom: 1px solid rgba(255,255,255,.05); line-height: 1.45;
}
.arch-item:last-child { border-bottom: none; }

/* ── Sandbox ────────────────────────────────────────────────────── */
.sandbox { background: var(--bg); border-bottom: 1px solid var(--border-soft); }
.sandbox-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem; margin: 2rem 0;
}
.sb-card {
  border: 1px solid var(--border); border-radius: 10px;
  background: var(--surface); overflow: hidden;
}
.sb-card.featured { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.sb-head {
  padding: 1.25rem 1.25rem .9rem;
  border-bottom: 1px solid var(--border-soft);
}
.sb-badge {
  font-size: .62rem; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; padding: .2em .6em;
  border-radius: 3px; margin-bottom: .65rem; display: inline-block;
}
.sb-title { font-size: 1rem; font-weight: 700; color: var(--ink); }
.sb-sub   { font-size: .8rem; color: var(--ink-soft); margin-top: .3rem; }
.sb-body  { padding: 1rem 1.25rem; }
.sb-row {
  display: flex; gap: .6rem; padding: .35rem 0;
  border-bottom: 1px solid var(--border-soft);
  font-size: .8rem; align-items: flex-start;
}
.sb-row:last-child { border-bottom: none; }
.sb-row-k { color: var(--muted); flex-shrink: 0; width: 120px; line-height: 1.4; }
.sb-row-v { color: var(--ink-soft); line-height: 1.4; }

/* ── Value propositions ─────────────────────────────────────────── */
.value { background: #fff; border-bottom: 1px solid var(--border-soft); }
.value-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.1rem; margin-top: 2.25rem;
}
.val-card {
  border: 1px solid var(--border-soft); border-radius: var(--radius);
  padding: 1.35rem 1.25rem; background: var(--bg);
}
.val-persona {
  font-size: .65rem; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: var(--accent); margin-bottom: .5rem;
}
.val-quote { font-size: .88rem; color: var(--ink); line-height: 1.65; font-style: italic; }

/* ── Comparison table ───────────────────────────────────────────── */
.comparison { background: var(--bg); border-bottom: 1px solid var(--border-soft); }
.tbl-outer {
  overflow-x: auto; margin-top: 2rem;
  border: 1px solid var(--border); border-radius: var(--radius);
}
table { width: 100%; border-collapse: collapse; font-size: .82rem; min-width: 600px; }
th {
  background: var(--ink); color: #fff; text-align: left;
  font-size: .68rem; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; padding: .75rem 1rem; white-space: nowrap;
}
th.accent-col { background: var(--accent); }
td {
  padding: .6rem 1rem; border-bottom: 1px solid var(--border-soft);
  color: var(--ink-soft); vertical-align: top; line-height: 1.5;
}
tr:last-child td { border-bottom: none; }
tr:nth-child(even) td { background: #F8FAFB; }
.td-label { font-weight: 600; color: var(--ink); }

/* ── Developer docs ─────────────────────────────────────────────── */
.devdocs { background: #fff; border-bottom: 1px solid var(--border-soft); }
.docs-layout {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 2.5rem; margin-top: 2rem; align-items: start;
}
.docs-nav  { position: sticky; top: calc(var(--nav-h) + 1.5rem); }
.docs-nav-label {
  font-size: .63rem; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: var(--muted);
  padding: .5rem 0 .25rem;
}
.docs-nav-a {
  display: block; font-size: .8rem; color: var(--ink-soft);
  text-decoration: none; padding: .28rem 0;
  transition: color var(--transition);
}
.docs-nav-a:hover,
.docs-nav-a.active { color: var(--accent); }
.doc-section {
  margin-bottom: 2.5rem; padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-soft);
}
.doc-section:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.doc-h { font-size: 1.05rem; font-weight: 700; color: var(--ink); margin-bottom: .5rem; }
.doc-p { font-size: .86rem; color: var(--ink-soft); line-height: 1.75; margin-bottom: .75rem; }
.code-label {
  font-size: .62rem; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; color: var(--muted);
  margin-top: .9rem; margin-bottom: .25rem;
}
.code-block {
  background: var(--code-bg); border-radius: 6px;
  padding: .9rem 1.1rem; overflow-x: auto;
  font-family: 'Menlo', 'Consolas', 'Monaco', monospace;
  font-size: .76rem; line-height: 1.65; color: var(--code-fg);
  margin: .6rem 0 .9rem;
}
.code-block .kw  { color: var(--code-kw); }
.code-block .st  { color: var(--code-str); }
.code-block .cm  { color: var(--code-cm); }
.doc-note {
  font-size: .8rem; color: var(--teal-ink); background: var(--teal-bg);
  border-left: 3px solid var(--teal);
  border-radius: 0 5px 5px 0; padding: .75rem 1rem;
  margin: .6rem 0; line-height: 1.55;
}
.doc-note strong { display: block; font-size: .63rem; text-transform: uppercase; letter-spacing: .1em; margin-bottom: .25rem; }
.callout {
  border-left: 3px solid var(--accent); background: var(--accent-pale);
  border-radius: 0 5px 5px 0; padding: .8rem 1rem;
  margin: 1rem 0; font-size: .84rem; color: var(--ink); line-height: 1.55;
}
.callout strong {
  display: block; font-size: .62rem; text-transform: uppercase;
  letter-spacing: .12em; margin-bottom: .25rem; color: var(--accent);
}
.doc-list { font-size: .84rem; color: var(--ink-soft); line-height: 2.1; padding-left: 1.4rem; }
@media (max-width: 700px) {
  .docs-layout { grid-template-columns: 1fr; }
  .docs-nav    { position: static; }
}

/* ── Security ───────────────────────────────────────────────────── */
.security { background: var(--hero-bg); border-bottom: 1px solid var(--hero-border); }
.sec-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem; margin-top: 2rem;
}
.sec-item {
  background: rgba(255,255,255,.04); border: 1px solid var(--hero-border);
  border-radius: var(--radius); padding: 1.1rem 1rem;
}
.sec-icon { font-size: 1.1rem; margin-bottom: .55rem; }
.sec-title { font-size: .86rem; font-weight: 700; color: #fff; margin-bottom: .3rem; }
.sec-desc  { font-size: .78rem; color: #64748B; line-height: 1.55; }
.sec-disclaimer {
  font-size: .78rem; color: #475569;
  background: rgba(255,255,255,.03); border: 1px solid var(--hero-border);
  border-radius: 6px; padding: .85rem 1rem;
  margin-top: 1.75rem; line-height: 1.65;
}
.sec-disclaimer a { color: #60A5FA; }

/* ── Contact / CTA ──────────────────────────────────────────────── */
.contact {
  background: var(--accent);
  padding: 5rem 1.75rem; text-align: center;
}
.contact-h {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800; color: #fff; letter-spacing: -.03em; margin-bottom: .85rem;
}
.contact-sub {
  font-size: 1rem; color: rgba(255,255,255,.8);
  max-width: 520px; margin: 0 auto 2rem; line-height: 1.75;
}
.contact-ctas {
  display: flex; flex-wrap: wrap; gap: .75rem; justify-content: center;
}
.contact-email {
  display: inline-block; font-size: .9rem; font-weight: 600; color: #fff;
  border: 2px solid rgba(255,255,255,.4); border-radius: 8px;
  padding: .65rem 1.4rem; text-decoration: none; margin-top: .75rem;
  transition: background var(--transition);
}
.contact-email:hover { background: rgba(255,255,255,.12); }
.contact-note { font-size: .78rem; color: rgba(255,255,255,.5); margin-top: 1.25rem; }

/* ── Footer ─────────────────────────────────────────────────────── */
.footer {
  background: var(--hero-bg); border-top: 1px solid var(--hero-border);
  padding: 2rem 1.75rem; text-align: center;
}
.footer-links {
  display: flex; flex-wrap: wrap; gap: .5rem 1.5rem;
  justify-content: center; margin-bottom: 1rem;
}
.footer-a { font-size: .78rem; color: #475569; text-decoration: none; }
.footer-a:hover { color: #94A3B8; }
.footer-copy { font-size: .75rem; color: #334155; }