/* Huxkan landing — shared design system */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg:           #07080a;
  --bg-elev:      rgba(255,255,255,0.02);
  --bg-elev-hi:   rgba(255,255,255,0.04);
  --border:       rgba(255,255,255,0.08);
  --border-hi:    rgba(255,255,255,0.14);
  --text-hi:      #f4f6fa;
  --text-mid:     rgba(244,246,250,0.72);
  --text-lo:      rgba(244,246,250,0.45);
  --text-dim:     rgba(244,246,250,0.32);
  --accent-blue:  #6aa3ff;
  --accent-grn:   oklch(0.78 0.19 155);
  --accent-amb:   #f5b66a;
  --status-grn:   #4ade80;
  --code-bg:      #0c0e12;
  --code-border:  rgba(255,255,255,0.06);
  --radius:       10px;
}

html, body { background: var(--bg); color: var(--text-hi); }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "SF Pro Text", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--text-hi); }

code, pre, .mono { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; }

/* Layout container */
.shell { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
@media (max-width: 720px) { .shell { padding: 0 20px; } }

/* ─── Header / Nav ─── */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(7,8,10,0.78);
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.nav a { color: var(--text-mid); font-size: 14px; }
.nav a:hover { color: var(--text-hi); }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links .cta { margin-left: 8px; }
@media (max-width: 720px) {
  .nav-links { gap: 16px; }
  .nav-links .nav-link-hide { display: none; }
}

/* Logo */
.logo {
  display: inline-flex; align-items: center;
  /* No `gap` here. The wordmark "hux<span>க</span>n" contains anonymous
   * text nodes ("hux", "n") which flex layout wraps as anonymous flex
   * items — and `gap` then inserts a 10px space between every one of
   * them, producing the broken "hux  க  n" look in the header/footer.
   * We use margin-right on the .logo-mark instead so only the icon
   * gets the 10px gap from the wordmark. */
  font-size: 22px; font-weight: 600; letter-spacing: -0.5px; color: var(--text-hi);
}
.logo-mark {
  width: 22px; height: 22px;
  margin-right: 10px;
  border: 1.5px solid var(--text-mid);
  border-radius: 5px; position: relative;
  flex: 0 0 auto;
}
.logo-mark::after {
  content: ""; position: absolute; top: 4px; left: 4px;
  width: 4px; height: 4px; border-radius: 50%; background: var(--status-grn);
  box-shadow: 0 0 6px var(--status-grn);
}
.logo .ka { color: var(--accent-blue); font-family: "Latha", "Tamil MN", "Tamil Sangam MN", serif; }

/* ─── Buttons ─── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-size: 14px; font-weight: 500; line-height: 1;
  padding: 11px 18px; border-radius: 8px; cursor: pointer;
  border: 1px solid transparent; transition: 120ms ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent-blue); color: #07080a;
  border-color: var(--accent-blue);
  font-weight: 600;
}
.btn-primary:hover {
  background: #88b6ff; color: #07080a;
  border-color: #88b6ff;
  transform: translateY(-1px);
  box-shadow: 0 4px 18px rgba(106,163,255,0.25);
}
.btn-ghost {
  background: transparent; color: var(--text-hi);
  border-color: var(--border-hi);
}
.btn-ghost:hover { background: var(--bg-elev-hi); border-color: var(--text-mid); }
.btn-lg { padding: 14px 22px; font-size: 15px; }

/* Section headers */
.eyebrow {
  font-size: 11px; letter-spacing: 1.6px; text-transform: uppercase;
  color: var(--text-dim); font-weight: 500;
}
h1, h2, h3, h4 { color: var(--text-hi); font-weight: 600; letter-spacing: -1.2px; line-height: 1.1; }
h1 { font-size: clamp(40px, 6vw, 68px); letter-spacing: -2.5px; }
h2 { font-size: clamp(28px, 4vw, 42px); letter-spacing: -1.5px; }
h3 { font-size: 20px; letter-spacing: -0.5px; }
.lede { color: var(--text-mid); font-size: 18px; line-height: 1.6; max-width: 640px; }

/* ─── Hero ─── */
.hero {
  padding: 96px 0 72px;
  text-align: center;
  position: relative; overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 800px 400px at 50% 0%, oklch(0.72 0.17 255 / 0.10), transparent 60%),
    radial-gradient(ellipse 600px 300px at 50% 60%, oklch(0.78 0.19 155 / 0.06), transparent 60%);
}
.hero > * { position: relative; }
.hero h1 { margin-bottom: 22px; }
.hero h1 .accent { color: var(--accent-blue); }
.hero h1 .ka { color: var(--accent-blue); font-family: "Latha", "Tamil MN", "Tamil Sangam MN", serif; }
.hero .lede { margin: 0 auto 36px; max-width: 680px; font-size: clamp(17px, 2vw, 20px); }
.hero-cta { display: inline-flex; gap: 14px; flex-wrap: wrap; justify-content: center; }

/* Status pill under hero */
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--bg-elev); border: 1px solid var(--border);
  padding: 6px 14px; border-radius: 999px;
  font-size: 12px; color: var(--text-mid);
  margin-bottom: 28px;
}
.pill-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--status-grn);
  box-shadow: 0 0 8px var(--status-grn);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.55; } }

/* ─── Section spacing ─── */
section { padding: 80px 0; }
.section-head { text-align: center; margin-bottom: 56px; }
.section-head .eyebrow { display: block; margin-bottom: 14px; }
.section-head .lede { margin: 16px auto 0; }

/* ─── Cards ─── */
.cards { display: grid; gap: 18px; }
.cards-3 { grid-template-columns: repeat(3, 1fr); }
.cards-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 900px) { .cards-3, .cards-2 { grid-template-columns: 1fr; } }

.card {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: 14px; padding: 28px;
}
.card h3 { margin-bottom: 10px; }
.card p { color: var(--text-mid); font-size: 15px; line-height: 1.55; }
.card-icon {
  width: 36px; height: 36px; border-radius: 8px;
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 18px; background: var(--bg-elev-hi); border: 1px solid var(--border);
  color: var(--accent-blue);
}

/* ─── Steps (numbered) ─── */
.steps { display: grid; gap: 14px; counter-reset: step; }
.step {
  display: grid; grid-template-columns: 56px 1fr; gap: 24px; align-items: start;
  padding: 24px 28px;
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: 14px;
  position: relative;
}
.step::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  font-family: ui-monospace, monospace; font-size: 28px; font-weight: 500;
  color: var(--accent-blue); letter-spacing: -1px;
}
.step h3 { font-size: 17px; margin-bottom: 6px; }
.step p { color: var(--text-mid); font-size: 14.5px; line-height: 1.55; }
.step pre {
  background: var(--code-bg); border: 1px solid var(--code-border);
  padding: 12px 14px; border-radius: 8px;
  font-size: 13px; color: var(--text-hi);
  overflow-x: auto; margin-top: 10px;
}
.step pre code { color: var(--text-hi); }
.step pre .c-comment { color: var(--text-lo); }
.step pre .c-arg     { color: var(--accent-grn); }

/* ─── Code blocks (general) ─── */
pre.code-block {
  background: var(--code-bg); border: 1px solid var(--code-border);
  padding: 16px 18px; border-radius: 10px;
  font-size: 13.5px; line-height: 1.55; color: var(--text-hi);
  overflow-x: auto;
}

/* ─── Footer ─── */
footer {
  border-top: 1px solid var(--border);
  margin-top: 96px;
  padding: 64px 0 36px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr repeat(4, 1fr);
  gap: 48px;
}
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
.footer-col h4 {
  font-size: 11px; letter-spacing: 1.6px; text-transform: uppercase;
  color: var(--text-dim); font-weight: 500; margin-bottom: 18px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 11px; }
.footer-col a { color: var(--text-mid); font-size: 14px; }
.footer-col a:hover { color: var(--text-hi); }
.footer-brand p {
  color: var(--text-mid); font-size: 14px; line-height: 1.55;
  max-width: 280px; margin-top: 18px;
}
.footer-bottom {
  margin-top: 56px; padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 16px;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 12px; color: var(--text-lo);
}
.footer-bottom .ka { color: var(--accent-blue); font-family: "Latha", "Tamil MN", "Tamil Sangam MN", serif; }
.fleet-status { display: inline-flex; align-items: center; gap: 8px; }

/* ─── Page-content prose ─── */
.prose { max-width: 760px; margin: 0 auto; padding: 64px 0; }
.prose h1 { font-size: clamp(36px, 5vw, 52px); margin-bottom: 14px; }
.prose .lede { margin: 0 0 40px; }
.prose h2 { font-size: 24px; margin: 36px 0 12px; letter-spacing: -0.5px; }
.prose h3 { font-size: 18px; margin: 24px 0 8px; }
.prose p, .prose li { color: var(--text-mid); font-size: 16px; line-height: 1.7; margin-bottom: 14px; }
.prose ul, .prose ol { padding-left: 22px; margin-bottom: 16px; }
.prose li { margin-bottom: 6px; }
.prose strong { color: var(--text-hi); font-weight: 600; }
.prose code {
  background: var(--code-bg); border: 1px solid var(--code-border);
  padding: 1px 6px; border-radius: 5px; font-size: 13.5px;
  color: var(--accent-grn);
}
.prose pre { margin: 16px 0; }
.prose hr { border: none; border-top: 1px solid var(--border); margin: 40px 0; }

/* Architecture diagram bits */
.diagram-frame {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: 16px; padding: 32px; margin: 24px 0;
}
.diagram-frame svg { width: 100%; height: auto; display: block; }

/* ─── Live demo (animated console preview) ─── */
.demo-frame {
  background: linear-gradient(180deg, rgba(255,255,255,0.025), rgba(255,255,255,0.015));
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 28px;
  position: relative;
  overflow: hidden;
}
.demo-frame::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    linear-gradient(transparent 0, transparent calc(100% - 1px), rgba(255,255,255,0.025) 100%) 0 0 / 100% 28px,
    linear-gradient(90deg, transparent 0, transparent calc(100% - 1px), rgba(255,255,255,0.025) 100%) 0 0 / 28px 100%;
  opacity: 0.6;
}
.demo-frame > * { position: relative; }

.demo-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  margin-bottom: 24px;
}
.demo-title { font-size: 22px; font-weight: 600; color: var(--text-hi); letter-spacing: -0.5px; }
.demo-sub {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: ui-monospace, monospace; font-size: 12px;
  color: var(--text-lo); margin-top: 6px;
}
.demo-pill {
  display: inline-flex; align-items: center; gap: 7px;
  background: rgba(74,222,128,0.10); border: 1px solid rgba(74,222,128,0.3);
  color: var(--status-grn);
  padding: 5px 12px; border-radius: 999px;
  font-family: ui-monospace, monospace; font-size: 12px;
}

.demo-kpis {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
  margin-bottom: 18px;
}
.demo-kpi {
  background: rgba(255,255,255,0.025); border: 1px solid var(--border);
  border-radius: 12px; padding: 18px 22px;
}
.demo-kpi-label {
  font-family: ui-monospace, monospace; font-size: 10px;
  letter-spacing: 1.4px; color: var(--text-lo);
  text-transform: uppercase; margin-bottom: 8px;
}
.demo-kpi-value {
  font-size: clamp(26px, 3.2vw, 38px); font-weight: 600;
  color: var(--text-hi); letter-spacing: -1.5px;
  font-variant-numeric: tabular-nums;
}

.demo-chart {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border); border-radius: 12px;
  height: 240px; overflow: hidden;
  position: relative;
}
.demo-chart svg {
  width: 200%; height: 100%; display: block;
}
@keyframes chart-scroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.chart-track {
  animation: chart-scroll 24s linear infinite;
}

.demo-feed {
  margin-top: 18px; display: flex; flex-direction: column; gap: 0;
  border: 1px solid var(--border); border-radius: 12px; overflow: hidden;
  background: rgba(255,255,255,0.015);
}
.demo-feed-row {
  display: flex; align-items: center; gap: 16px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  font-size: 13.5px;
}
.demo-feed-row:last-child { border-bottom: none; }
.demo-feed-row .demo-rid { color: var(--text-lo); flex: 0 0 auto; min-width: 180px; font-size: 12px; }
.demo-feed-row .demo-model { color: var(--text-hi); }
.demo-feed-row .demo-spacer { flex: 1; }
.demo-feed-row .demo-lat { color: var(--text-mid); font-size: 12px; }
@media (max-width: 720px) {
  .demo-feed-row { flex-wrap: wrap; gap: 8px; }
  .demo-feed-row .demo-rid { min-width: 0; }
}

/* Badge / chip */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11px; padding: 4px 10px; border-radius: 999px;
  background: var(--bg-elev-hi); border: 1px solid var(--border);
  color: var(--text-mid); letter-spacing: 0.4px;
}
.badge.green { color: var(--status-grn); border-color: rgba(74, 222, 128, 0.3); }

/* Intrinsic code widths must not expand grid tracks on small screens. */
.step { grid-template-columns: 56px minmax(0, 1fr); }
.cards > *, .step > *, .footer-grid > *, .demo-kpis > * { min-width: 0; }
@media (max-width: 720px) {
  .nav-inner { height: auto; min-height: 64px; flex-wrap: wrap; gap: 12px; padding-top: 12px; padding-bottom: 12px; }
  .nav-links { flex-wrap: wrap; gap: 12px; }
  .nav-links .cta { margin-left: 0; }
  .step { grid-template-columns: minmax(0, 1fr); gap: 12px; padding: 20px; }
  .demo-frame { padding: 16px; }
  .demo-header { flex-wrap: wrap; gap: 12px; }
  .demo-kpis { grid-template-columns: minmax(0, 1fr); }
  .demo-sub { flex-wrap: wrap; overflow-wrap: anywhere; }
  .btn { min-height: 44px; white-space: normal; text-align: center; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
}
@media (prefers-reduced-motion: reduce) {
  .chart-track, .pill-dot { animation: none; }
}