/* =======================================================================
   build-with-deepak.com design system — shared copy
   =======================================================================

   This file is byte-identical to the `bwd-*` block in
   build-with-deepak.com's src/styles.css, and is the reason the four apps
   in this suite finally look like one product.

   The previous attempt at shared chrome was a hand-copied header per repo.
   It drifted immediately: one app ended up with a header component, two
   inlined their own, and there were two different footers. The fix is not
   discipline — it is making the shared thing a single artefact that is
   copied whole rather than re-typed.

   DO NOT hand-edit this file. Change it in build-with-deepak.com and copy
   it back out to all three demos.
   ======================================================================= */

/* ============================================================
   PRODUCT-STUDIO DESIGN SYSTEM  (bwd-*)
   ============================================================

   One token set and one component vocabulary shared by
   build-with-deepak.com and the three demo apps (rag./agent./
   router.), so the suite reads as one product rather than four
   sites that happen to share a logo.

   Everything here is prefixed `bwd-` and defined in plain CSS
   rather than Tailwind utilities for exactly that reason: the
   demo apps are separate Angular workspaces with no Tailwind
   build, and this block is copied into their global stylesheet
   verbatim. A utility-class design system could not cross that
   boundary; a token + component-class one can.

   Personality target: technical + premium + calm + credible.
   Deliberately NOT: neon gradients, robot illustrations, or a
   dark "AI startup" palette.
   ============================================================ */

:root {
  /* Surfaces — light-first. --bwd-surface is the page; --bwd-raised
     is any card sitting on it; --bwd-sunken is a recessed band used
     to separate sections without drawing a border. */
  --bwd-surface: #ffffff;
  --bwd-raised: #ffffff;
  --bwd-sunken: #f8fafc;
  --bwd-border: #e6ebf2;
  --bwd-border-strong: #cbd5e1;

  /* Ink. Navy rather than black: at these weights pure #000 reads
     harsh against white and cheapens the page. */
  --bwd-ink: #0b1220;
  --bwd-ink-soft: #1e293b;
  --bwd-body: #475569;
  --bwd-muted: #64748b;
  --bwd-faint: #7c8ba0;

  /* Accent — one blue, used sparingly. The indigo exists only as the
     second stop of the primary-button gradient and in diagrams. */
  --bwd-accent: #2563eb;
  --bwd-accent-strong: #1d4ed8;
  --bwd-accent-deep: #4f46e5;
  --bwd-accent-bg: #eff6ff;
  --bwd-accent-border: #bfdbfe;

  /* Live / available. Green is reserved for exactly one meaning on
     this site: "this is running right now" or "I am available".
     Using it for anything else devalues both signals. */
  --bwd-live: #16a34a;
  --bwd-live-bg: #f0fdf4;
  --bwd-live-border: #bbf7d0;

  --bwd-radius-sm: 0.625rem;
  --bwd-radius: 0.875rem;
  --bwd-radius-lg: 1.25rem;
  --bwd-radius-xl: 1.75rem;

  /* Two shadows only. A card is either resting or lifted. */
  --bwd-shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 8px 24px rgba(15, 23, 42, 0.05);
  --bwd-shadow-lift: 0 2px 4px rgba(15, 23, 42, 0.05), 0 18px 44px rgba(37, 99, 235, 0.12);

  --bwd-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
}

/* Dark mode is a courtesy here, not the primary experience: the design
   direction is explicitly light-first, and the mockups, the OG cards and
   every screenshot assume white. These overrides exist so a visitor who
   has already toggled the site dark is not blinded, not as a second
   design. */
[data-theme="dark"] {
  --bwd-surface: #0b1220;
  --bwd-raised: #131c2e;
  --bwd-sunken: #0f172a;
  --bwd-border: #263449;
  --bwd-border-strong: #33415a;
  --bwd-ink: #f1f5f9;
  --bwd-ink-soft: #e2e8f0;
  --bwd-body: #b6c2d4;
  --bwd-muted: #94a3b8;
  --bwd-faint: #64748b;
  --bwd-accent: #60a5fa;
  --bwd-accent-strong: #93c5fd;
  --bwd-accent-deep: #a5b4fc;
  --bwd-accent-bg: rgba(37, 99, 235, 0.14);
  --bwd-accent-border: rgba(96, 165, 250, 0.3);
  --bwd-live: #4ade80;
  --bwd-live-bg: rgba(22, 163, 74, 0.14);
  --bwd-live-border: rgba(74, 222, 128, 0.28);
  --bwd-shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.25);
  --bwd-shadow-lift: 0 2px 4px rgba(0, 0, 0, 0.35), 0 18px 44px rgba(0, 0, 0, 0.4);
}

/* ---------------- Layout primitives ---------------- */

.bwd-shell {
  max-width: 76rem;
  margin: 0 auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

@media (max-width: 40rem) {
  .bwd-shell {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}

.bwd-section {
  padding-top: 5.5rem;
  padding-bottom: 5.5rem;
}

.bwd-section--tight {
  padding-top: 3.5rem;
  padding-bottom: 3.5rem;
}

.bwd-section--sunken {
  background: var(--bwd-sunken);
}

@media (max-width: 48rem) {
  .bwd-section {
    padding-top: 3.5rem;
    padding-bottom: 3.5rem;
  }
}

/* Section heading row: title on the left, an optional quiet aside on the
   right. The aside carries the "why should I believe you" line that would
   otherwise become another paragraph of body copy. */
.bwd-section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem 2rem;
  flex-wrap: wrap;
  margin-bottom: 2.25rem;
}

.bwd-section-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0;
  font-size: clamp(1.5rem, 1.15rem + 1.3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--bwd-ink);
}

/* The short accent rule that opens every section title in the mockups. */
.bwd-section-title::before {
  content: "";
  width: 1.5rem;
  height: 0.1875rem;
  border-radius: 999px;
  background: var(--bwd-accent);
  flex-shrink: 0;
}

.bwd-section-aside {
  font-size: 0.875rem;
  color: var(--bwd-muted);
  margin: 0;
  max-width: 34rem;
}

/* ---------------- Type ---------------- */

.bwd-display {
  margin: 0;
  font-size: clamp(2.25rem, 1.4rem + 3.4vw, 3.75rem);
  line-height: 1.06;
  font-weight: 800;
  letter-spacing: -0.035em;
  color: var(--bwd-ink);
  text-wrap: balance;
}

.bwd-display em {
  font-style: normal;
  color: var(--bwd-accent);
}

.bwd-lede {
  margin: 1.25rem 0 0;
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  line-height: 1.65;
  color: var(--bwd-body);
  max-width: 36rem;
  text-wrap: pretty;
}

.bwd-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--bwd-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bwd-accent);
  background: var(--bwd-accent-bg);
  border: 1px solid var(--bwd-accent-border);
  border-radius: 999px;
  padding: 0.3rem 0.75rem;
}

.bwd-eyebrow--plain {
  background: none;
  border: none;
  padding: 0;
  /* muted, not faint — this is a read label (e.g. "Live systems"), and
     faint's contrast ratio against a white surface (~3:1) is too low for
     text people are meant to read rather than glance past. */
  color: var(--bwd-muted);
}

/* ---------------- Live / available indicators ---------------- */

.bwd-live-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--bwd-live);
  background: var(--bwd-live-bg);
  border: 1px solid var(--bwd-live-border);
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
  white-space: nowrap;
}

.bwd-dot {
  width: 0.4375rem;
  height: 0.4375rem;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
  animation: bwd-pulse 2.4s ease-in-out infinite;
}

@keyframes bwd-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(22, 163, 74, 0.45); }
  55%      { box-shadow: 0 0 0 5px rgba(22, 163, 74, 0); }
}

/* Anything that animates on a loop is a distraction to someone who has
   asked the OS to stop that. */
@media (prefers-reduced-motion: reduce) {
  .bwd-dot { animation: none; }
  .bwd-card, .bwd-btn, .bwd-path-card { transition: none !important; }
}

/* ---------------- Buttons ---------------- */

.bwd-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.4rem;
  border-radius: var(--bwd-radius-sm);
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background-color 0.2s ease,
    border-color 0.2s ease, color 0.2s ease;
  white-space: nowrap;
}

.bwd-btn:active {
  transform: translateY(1px);
}

.bwd-btn--primary {
  background: linear-gradient(135deg, var(--bwd-accent) 0%, var(--bwd-accent-deep) 100%);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.26);
}

.bwd-btn--primary:hover {
  box-shadow: 0 8px 22px rgba(37, 99, 235, 0.34);
  transform: translateY(-1px);
}

[data-theme="dark"] .bwd-btn--primary {
  color: #0b1220;
}

.bwd-btn--ghost {
  background: var(--bwd-raised);
  color: var(--bwd-ink);
  border-color: var(--bwd-border-strong);
}

.bwd-btn--ghost:hover {
  border-color: var(--bwd-accent);
  color: var(--bwd-accent);
  background: var(--bwd-accent-bg);
}

.bwd-btn--quiet {
  background: none;
  color: var(--bwd-muted);
  padding: 0.5rem 0.25rem;
  font-weight: 600;
}

.bwd-btn--quiet:hover {
  color: var(--bwd-accent);
}

.bwd-btn--block {
  width: 100%;
}

.bwd-btn[disabled],
.bwd-btn[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.bwd-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

/* ---------------- Cards ---------------- */

.bwd-card {
  background: var(--bwd-raised);
  border: 1px solid var(--bwd-border);
  border-radius: var(--bwd-radius-lg);
  padding: 1.5rem;
  box-shadow: var(--bwd-shadow);
  transition: transform 0.18s ease, box-shadow 0.22s ease, border-color 0.18s ease;
}

.bwd-card--interactive:hover {
  transform: translateY(-3px);
  box-shadow: var(--bwd-shadow-lift);
  border-color: var(--bwd-accent-border);
}

.bwd-card--flat {
  box-shadow: none;
}

.bwd-card-title {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--bwd-ink);
}

.bwd-card-body {
  margin: 0.6rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--bwd-body);
}

/* Square tinted glyph plate that opens most cards. The tint is passed in
   per card via --plate so one class covers every accent. */
.bwd-plate {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--bwd-radius-sm);
  background: var(--plate, var(--bwd-accent-bg));
  color: var(--plate-ink, var(--bwd-accent));
  flex-shrink: 0;
}

.bwd-plate svg {
  width: 1.375rem;
  height: 1.375rem;
}

/* ---------------- Grids ---------------- */

.bwd-grid {
  display: grid;
  gap: 1.25rem;
}

.bwd-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.bwd-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.bwd-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.bwd-grid--6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }

@media (max-width: 64rem) {
  .bwd-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bwd-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bwd-grid--6 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 40rem) {
  .bwd-grid--2,
  .bwd-grid--3,
  .bwd-grid--4 { grid-template-columns: minmax(0, 1fr); }
  .bwd-grid--6 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------------- Feature rows inside cards ----------------
   The two-up "Document Processing / Vector Search" rows on the demo
   cards. A grid rather than a flex wrap so the second column lines up
   across all three cards regardless of label length — misaligned
   feature rows are the single loudest "this was assembled quickly"
   signal on a page like this. */

.bwd-features {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.6rem 1rem;
  margin: 1.1rem 0 0;
  padding: 0;
  list-style: none;
}

.bwd-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--bwd-ink-soft);
  min-width: 0;
}

.bwd-features svg {
  width: 1rem;
  height: 1rem;
  color: var(--bwd-muted);
  flex-shrink: 0;
}

@media (max-width: 30rem) {
  .bwd-features { grid-template-columns: minmax(0, 1fr); }
}

/* ---------------- Checklist ---------------- */

.bwd-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.bwd-checklist li {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--bwd-body);
}

.bwd-check {
  width: 1.125rem;
  height: 1.125rem;
  flex-shrink: 0;
  margin-top: 0.15rem;
  color: var(--bwd-live);
}

/* ---------------- Pills / chips ---------------- */

.bwd-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.bwd-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--bwd-border);
  background: var(--bwd-sunken);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--bwd-ink-soft);
  white-space: nowrap;
}

/* ---------------- Flow / pipeline diagram ----------------
   Used for "Documents → Processing → Retrieval → Context → Answer"
   and the lifecycle row. Laid out as a flex row that wraps rather
   than a fixed grid: the arrow is a real element that hides on wrap
   so the diagram degrades to a legible stacked list on a phone
   instead of overflowing sideways. */

.bwd-flow {
  display: flex;
  align-items: stretch;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.bwd-flow-step {
  flex: 1 1 8.5rem;
  min-width: 8.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.5rem;
  padding: 1.1rem 0.75rem;
  border-radius: var(--bwd-radius);
  border: 1px solid var(--bwd-border);
  background: var(--bwd-raised);
}

.bwd-flow-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: var(--bwd-accent-bg);
  color: var(--bwd-accent);
  font-size: 0.8125rem;
  font-weight: 800;
}

.bwd-flow-name {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--bwd-ink);
}

.bwd-flow-note {
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--bwd-muted);
}

.bwd-flow-arrow {
  align-self: center;
  color: var(--bwd-faint);
  flex-shrink: 0;
}

@media (max-width: 48rem) {
  .bwd-flow-arrow { display: none; }
  .bwd-flow-step { flex-basis: 100%; }
}

/* ---------------- Architecture diagram ----------------
   Column-per-tier, each column a stack of labelled boxes. Same
   wrap-and-hide-the-arrow approach as .bwd-flow. */

.bwd-arch {
  display: flex;
  align-items: stretch;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 1.5rem;
  border-radius: var(--bwd-radius-lg);
  border: 1px solid var(--bwd-border);
  background: var(--bwd-sunken);
}

.bwd-arch-tier {
  flex: 1 1 9.5rem;
  min-width: 9.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.bwd-arch-tier-label {
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--bwd-muted);
  text-align: center;
  margin-bottom: 0.15rem;
}

.bwd-arch-node {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.7rem;
  border-radius: var(--bwd-radius-sm);
  border: 1px solid var(--bwd-border);
  background: var(--bwd-raised);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--bwd-ink-soft);
  line-height: 1.35;
}

.bwd-arch-node svg {
  width: 1rem;
  height: 1rem;
  color: var(--bwd-accent);
  flex-shrink: 0;
}

.bwd-arch-arrow {
  align-self: center;
  color: var(--bwd-faint);
  flex-shrink: 0;
}

@media (max-width: 56rem) {
  .bwd-arch-arrow { display: none; }
  .bwd-arch-tier { flex-basis: calc(50% - 0.375rem); }
}

@media (max-width: 34rem) {
  .bwd-arch { padding: 1rem; }
  .bwd-arch-tier { flex-basis: 100%; }
}

/* ---------------- Audience path cards ---------------- */

.bwd-path-card {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 1.375rem;
  border-radius: var(--bwd-radius-lg);
  border: 1px solid var(--bwd-border);
  background: var(--bwd-raised);
  text-decoration: none;
  transition: transform 0.18s ease, box-shadow 0.22s ease, border-color 0.18s ease;
}

.bwd-path-card:hover {
  transform: translateY(-3px);
  border-color: var(--bwd-accent-border);
  box-shadow: var(--bwd-shadow-lift);
}

.bwd-path-role {
  font-size: 1rem;
  font-weight: 800;
  color: var(--bwd-ink);
}

.bwd-path-copy {
  font-size: 0.85rem;
  line-height: 1.55;
  color: var(--bwd-body);
  margin: 0;
  flex: 1;
}

.bwd-path-cta {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--bwd-accent);
}

/* ---------------- Closing conversion block ---------------- */

.bwd-convert {
  border-radius: var(--bwd-radius-xl);
  border: 1px solid var(--bwd-accent-border);
  background: linear-gradient(140deg, #eef2ff 0%, #eff6ff 55%, #ffffff 100%);
  padding: 2.75rem;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: 2.5rem;
  align-items: center;
}

[data-theme="dark"] .bwd-convert {
  background: linear-gradient(140deg, #1a2440 0%, #131c2e 55%, #0f172a 100%);
}

@media (max-width: 56rem) {
  .bwd-convert {
    grid-template-columns: minmax(0, 1fr);
    padding: 1.75rem;
    gap: 1.75rem;
  }
}

/* ---------------- Mono / code label ---------------- */

.bwd-mono {
  font-family: var(--bwd-mono);
  font-size: 0.78rem;
  color: var(--bwd-muted);
}

/* ---------------- Visually hidden (a11y) ---------------- */

.bwd-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;
}