/* brainkup brand overrides on top of shadcn tokens */
:root {
  /* Brand */
  --bk-navy: #2d3e5c;
  --bk-navy-700: #25334d;
  --bk-navy-900: #1a2336;
  --bk-coral: #e76250;
  --bk-coral-soft: #f9ebe8;
  --bk-bg: #ffffff;
  --bk-surface: #fafafa;
  --bk-surface-2: #f6f6f7;
  --bk-border: #ececee;
  --bk-border-strong: #e1e1e4;
  --bk-text: #1f2a3d;
  --bk-text-muted: #6b7588;
  --bk-text-faint: #94a0b3;
  --bk-blue-dot: #45b8d4;
  --bk-blue-tag: #e8f4f8;

  /* Fonts */
  --bk-font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --bk-font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --bk-font-slab: "Roboto Slab", "IBM Plex Mono", "JetBrains Mono", monospace;
}

html, body {
  background: var(--bk-bg);
  color: var(--bk-text);
  font-family: var(--bk-font-sans);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  margin: 0;
}
html { scroll-behavior: smooth; scroll-padding-top: 76px; }

* { box-sizing: border-box; }
button { font-family: inherit; }

/* ---------- Brand wordmark ---------- */
.wordmark {
  font-family: var(--bk-font-slab);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--bk-navy);
  display: inline-flex;
  align-items: baseline;
  line-height: 1;
}
.wordmark .accent { color: var(--bk-coral); }

/* ---------- Mono tech labels ---------- */
.mono-label {
  font-family: var(--bk-font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--bk-text-faint);
  font-weight: 500;
}
.mono-tag {
  font-family: var(--bk-font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--bk-text-muted);
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px;
}
@media (max-width: 720px) {
  .container { padding: 0 20px; }
}

/* ---------- Navbar ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--bk-border);
}
.nav-inner {
  display: flex;
  align-items: center;
  height: 60px;
  gap: 24px;
  flex-wrap: nowrap;
}
@media (max-width: 1100px) {
  .nav-links { gap: 18px; }
  .nav-link { font-size: 13.5px; }
}
@media (max-width: 980px) {
  .nav-links .nav-link-secondary { display: none; }
}
@media (max-width: 820px) {
  .nav-links { display: none; }
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-left: 8px;
}
.nav-link {
  color: var(--bk-text-muted);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
  white-space: nowrap;
}
.nav-link:hover { color: var(--bk-text); }
.nav-link.active {
  color: var(--bk-text);
  border-bottom-color: var(--bk-navy);
}
.nav-spacer { flex: 1; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 36px;
  padding: 0 14px;
  border-radius: 8px;
  font-size: 13.5px;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s, box-shadow 0.15s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--bk-navy-900);
  color: #fff;
  box-shadow: 0 1px 0 0 rgba(0,0,0,0.05);
}
.btn-primary:hover { background: #0e1626; }
.btn-secondary {
  background: #fff;
  color: var(--bk-text);
  border-color: var(--bk-border-strong);
  box-shadow: 0 1px 0 0 rgba(0,0,0,0.02);
}
.btn-secondary:hover { background: var(--bk-surface); border-color: #c8c9cf; }
.btn-ghost { background: transparent; color: var(--bk-text-muted); }
.btn-ghost:hover { color: var(--bk-text); }
.btn-lg { height: 42px; padding: 0 18px; font-size: 14px; }

/* ---------- Section ---------- */
section {
  padding: 96px 0;
  border-top: 1px solid var(--bk-border);
}
section:first-of-type { border-top: 0; }
@media (max-width: 720px) {
  section { padding: 72px 0; }
}

.eyebrow {
  font-family: var(--bk-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--bk-coral);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--bk-coral);
  display: inline-block;
}

h1.display {
  font-size: 56px;
  line-height: 1.04;
  letter-spacing: -0.03em;
  font-weight: 700;
  color: var(--bk-navy-900);
  margin: 18px 0 22px;
}
@media (max-width: 880px) { h1.display { font-size: 44px; } }
@media (max-width: 520px) { h1.display { font-size: 36px; } }
h1.display .muted { color: var(--bk-text-faint); }
h1.display .coral { color: var(--bk-coral); }

h2.section-title {
  font-size: 38px;
  line-height: 1.1;
  letter-spacing: -0.025em;
  font-weight: 600;
  color: var(--bk-navy-900);
  margin: 12px 0 16px;
  text-wrap: balance;
}
@media (max-width: 720px) { h2.section-title { font-size: 30px; } }

h3.card-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--bk-navy-900);
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}

.lede {
  font-size: 18px;
  line-height: 1.55;
  color: var(--bk-text-muted);
  max-width: 640px;
  text-wrap: pretty;
}

/* ---------- Cards ---------- */
.card {
  background: #fff;
  border: 1px solid var(--bk-border);
  border-radius: 14px;
  padding: 22px;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.card:hover {
  border-color: var(--bk-border-strong);
}
.card-soft {
  background: var(--bk-surface);
  border: 1px solid var(--bk-border);
  border-radius: 14px;
  padding: 22px;
}

/* ---------- Chips / pills ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 32px;
  padding: 0 12px;
  border: 1px solid var(--bk-border);
  border-radius: 999px;
  background: #fff;
  font-size: 13px;
  color: var(--bk-text);
  font-weight: 500;
}
.chip .dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--bk-text-faint);
}
.chip .dot.on { background: var(--bk-blue-dot); }

/* Status pill (like screenshot) */
.status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--bk-font-mono);
  font-size: 12px;
  color: var(--bk-text-muted);
}
.status::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--bk-blue-dot);
  display: inline-block;
}
.status.fail::before { background: #ef5350; }

/* ---------- Grids ---------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.grid-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
@media (max-width: 980px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-5 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .grid-2, .grid-3, .grid-4, .grid-5 { grid-template-columns: 1fr; }
}

/* ---------- Hero ---------- */
.hero {
  padding-top: 72px;
  padding-bottom: 96px;
  border-top: 0;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 64px;
  align-items: center;
}
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 28px;
}
.hero-meta .dot-sep {
  color: var(--bk-text-faint);
}

/* ---------- Hero visual card ---------- */
.hero-visual {
  position: relative;
  background: var(--bk-surface);
  border: 1px solid var(--bk-border);
  border-radius: 18px;
  padding: 20px;
  overflow: hidden;
}
.hero-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(45,62,92,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(45,62,92,0.04) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
  mask-image: radial-gradient(circle at center, black 30%, transparent 80%);
}

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--bk-border);
  padding: 56px 0 48px;
  background: var(--bk-surface);
}

/* ---------- Animations ---------- */
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}
.live-dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--bk-blue-dot);
  animation: pulse-dot 2s ease-in-out infinite;
  display: inline-block;
}

@keyframes flow-dash {
  to { stroke-dashoffset: -24; }
}
.flowing {
  stroke-dasharray: 4 6;
  animation: flow-dash 1.4s linear infinite;
}

/* small utilities */
.divider {
  height: 1px;
  background: var(--bk-border);
  width: 100%;
}
.row { display: flex; align-items: center; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.center { display: flex; align-items: center; justify-content: center; }

/* ---------- Architecture / pipeline ---------- */
.pipeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  max-width: 520px;
  margin: 0 auto;
}
.pipe-node {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border: 1px solid var(--bk-border);
  border-radius: 12px;
  background: #fff;
  font-size: 14px;
  font-weight: 500;
  color: var(--bk-navy-900);
}
.pipe-node .tag {
  font-family: var(--bk-font-mono);
  font-size: 11px;
  color: var(--bk-text-faint);
  letter-spacing: 0.04em;
}
.pipe-arrow {
  height: 24px;
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--bk-text-faint);
}

/* ---------- IO section ---------- */
.io-grid {
  display: grid;
  grid-template-columns: 1fr 220px 1fr;
  gap: 0;
  align-items: stretch;
  border: 1px solid var(--bk-border);
  border-radius: 18px;
  background: #fff;
  overflow: hidden;
}
@media (max-width: 980px) {
  .io-grid { grid-template-columns: 1fr; }
}
.io-col {
  padding: 28px;
}
.io-col + .io-col { border-left: 1px solid var(--bk-border); }
@media (max-width: 980px) {
  .io-col + .io-col { border-left: 0; border-top: 1px solid var(--bk-border); }
}
.io-col-center {
  background: var(--bk-surface);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 14px;
}
.io-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.io-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid var(--bk-border);
  border-radius: 10px;
  background: #fff;
  font-size: 13.5px;
  color: var(--bk-text);
}
.io-row .ico {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bk-text-muted);
}

/* ---------- Marquee of agents ---------- */
.agent-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}
.agent-tile {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border: 1px solid var(--bk-border);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  color: var(--bk-text);
  background: #fff;
}

/* ---------- Code block ---------- */
.code-block {
  font-family: var(--bk-font-mono);
  font-size: 13px;
  line-height: 1.65;
  background: var(--bk-navy-900);
  color: #d9e0ec;
  border-radius: 12px;
  padding: 18px 20px;
  overflow-x: auto;
}
.code-block .cmt { color: #7e8aa3; }
.code-block .kw { color: #f4a59a; }
.code-block .str { color: #b6d4a3; }

/* ---------- Context pack cards ---------- */
.pack-card {
  background: #fff;
  border: 1px solid var(--bk-border);
  border-radius: 14px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 200px;
  transition: border-color 0.2s, transform 0.2s;
}
.pack-card:hover {
  border-color: var(--bk-navy);
}
.pack-card .ico-box {
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bk-surface);
  border: 1px solid var(--bk-border);
  border-radius: 8px;
  color: var(--bk-navy);
}

/* ---------- Install card ---------- */
.install-card {
  background: #fff;
  border: 1px solid var(--bk-border);
  border-radius: 14px;
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  cursor: pointer;
  transition: border-color 0.2s;
}
.install-card:hover { border-color: var(--bk-navy); }
.install-card .glyph {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bk-surface);
  border: 1px solid var(--bk-border);
  border-radius: 8px;
  color: var(--bk-navy);
}

/* ---------- Final CTA ---------- */
.final-cta {
  background: var(--bk-navy-900);
  color: #fff;
  border-radius: 22px;
  padding: 64px 56px;
  position: relative;
  overflow: hidden;
}
.final-cta h2 { color: #fff !important; }
.final-cta .lede { color: #aab4c8; }
.final-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
  mask-image: radial-gradient(circle at 80% 50%, black 0%, transparent 70%);
}
.final-cta .btn-primary {
  background: var(--bk-coral);
  color: #fff;
}
.final-cta .btn-primary:hover { background: #d24c3a; }
.final-cta .btn-secondary {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.18);
}
.final-cta .btn-secondary:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.3);
}

/* Workspace breadcrumb */
.workspace-bc {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--bk-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--bk-text-faint);
}
.workspace-bc .dot {
  width: 7px; height: 7px; border-radius: 999px;
  background: var(--bk-blue-dot);
}