/* BridgeSection component: header, bridge visual, three blind-spot cards and the skills band. */

.inc-bs {
  padding-top: var(--space-section);
  background: var(--bba-paper);
  border-top: 1px solid var(--bba-line);
  color: var(--bba-ink);
  font-family: var(--bba-font);
}

.inc-bs__wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

.inc-bs__head {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.inc-bs__title {
  margin: 0;
  font-size: clamp(1.875rem, 1.4rem + 2vw, 3rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.inc-bs__intro {
  max-width: 640px;
  margin: 20px auto 0;
  color: var(--bba-muted);
  font-size: clamp(1.0625rem, 1rem + 0.3vw, 1.25rem);
  line-height: 1.55;
}

/* Bridge visual: the aspect ratio reserves its space before anything animates. */
.inc-bs__visual {
  max-width: 1000px;
  max-height: 220px;
  margin: var(--space-intro) auto 0;
  aspect-ratio: 1000 / 340;
}

.inc-bs-svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
  font-family: var(--bba-font);
}

.inc-bs-svg__ground { stroke: var(--bba-line-strong); stroke-width: 1; stroke-linecap: round; }
.inc-bs-svg__valley { fill: color-mix(in srgb, var(--bba-accent) 9%, transparent); }
.inc-bs-svg__valley-edge { fill: none; stroke: var(--bba-line-strong); stroke-width: 1; stroke-dasharray: 3 6; }
.inc-bs-svg__block { fill: var(--bba-card); stroke: var(--bba-line-strong); stroke-width: 1; }
.inc-bs-svg__deck { stroke: var(--bba-ink); stroke-width: 1.5; stroke-linecap: round; }
.inc-bs-svg__arch { fill: none; stroke: var(--bba-accent); stroke-width: 2.5; stroke-linecap: round; }
.inc-bs-svg__hanger { stroke: var(--bba-line-strong); stroke-width: 1; }
.inc-bs-svg__pill { fill: var(--bba-accent-ink); }
.inc-bs-svg__dot { fill: var(--bba-accent); opacity: 0; }

/*
  SVG text is scaled with the drawing, so sizes step up as the drawing shrinks
  to keep every label at 12px or more on screen.
*/
.inc-bs-svg__label { fill: var(--bba-ink); font-size: 39px; font-weight: 700; letter-spacing: 0.02em; }
.inc-bs-svg__pill-text { fill: var(--bba-on-accent); font-size: 39px; font-weight: 800; letter-spacing: 0.02em; }
.inc-bs-svg__gap { fill: var(--bba-muted); font-size: 39px; font-weight: 500; }

/* Cards */
.inc-bs__cards {
  display: grid;
  gap: 20px;
  max-width: 680px;
  margin: var(--space-intro) auto 0;
  padding: 0;
  list-style: none;
}

.inc-bs__card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--bba-line);
  border-radius: 20px;
  background: var(--bba-card);
  box-shadow: 0 1px 2px rgba(17, 17, 17, 0.04), 0 8px 24px -16px rgba(17, 17, 17, 0.12);
  overflow: hidden;
  transition: transform 250ms var(--bba-ease), box-shadow 250ms var(--bba-ease);
}

.inc-bs__card-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 24px;
  padding: 28px 24px 24px;
}

.inc-bs__card-title {
  margin: 0;
  font-size: 1.375rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.015em;
}

.inc-bs__label {
  margin: 0 0 8px;
  color: var(--bba-muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1.4;
  text-transform: uppercase;
}

.inc-bs__stat {
  margin: 0;
}

.inc-bs__stat-num {
  display: block;
  color: var(--bba-accent-ink);
  font-size: clamp(3rem, 2.6rem + 1.6vw, 3.75rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}

.inc-bs__stat-text {
  display: block;
  margin-top: 10px;
  color: var(--bba-ink);
  font-size: 16px;
  line-height: 1.5;
}

.inc-bs__text {
  margin: 0;
  color: var(--bba-muted);
  font-size: 16px;
  line-height: 1.55;
}

/* "What Founders Build": a tinted footer, so the outcome reads as something tangible. */
.inc-bs__build {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: auto;
  padding: 18px 24px 22px;
  border-top: 1px solid var(--bba-line);
  background: color-mix(in srgb, var(--bba-accent) 6%, var(--bba-card));
}

.inc-bs__build-icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  color: var(--bba-accent-ink);
}

.inc-bs__build-text {
  margin: 0;
  color: var(--bba-ink);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.45;
}

.inc-bs__source {
  margin: 24px auto 0;
  color: var(--bba-muted);
  font-size: 13px;
  line-height: 1.5;
  text-align: center;
}

/* Skills band: full width, brand-tinted. */
.inc-bs__band {
  margin-top: var(--space-section);
  padding: var(--space-section) 0;
  background: color-mix(in srgb, var(--bba-accent) 7%, var(--bba-paper));
  border-top: 1px solid color-mix(in srgb, var(--bba-accent) 14%, var(--bba-paper));
  text-align: center;
}

.inc-bs__band-lead {
  max-width: 760px;
  margin: 0 auto;
  font-size: clamp(1.375rem, 1.15rem + 1vw, 1.875rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

.inc-bs__pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.inc-bs__pill {
  padding: 6px 14px;
  border: 1px solid color-mix(in srgb, var(--bba-accent) 45%, transparent);
  border-radius: 999px;
  background: var(--bba-card);
  color: var(--bba-accent-ink);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.inc-bs__band-text {
  max-width: 620px;
  margin: 16px auto 0;
  color: var(--bba-muted);
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  line-height: 1.6;
}

.inc-bs__signature {
  max-width: 720px;
  margin: 36px auto 0;
  font-size: clamp(1.25rem, 1.05rem + 0.9vw, 1.75rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

.inc-bs__signature::before {
  content: "";
  display: block;
  width: 40px;
  height: 2px;
  margin: 0 auto 20px;
  border-radius: 2px;
  background: var(--bba-accent);
}

.inc-bs__note {
  margin: 20px auto 0;
  color: var(--bba-muted);
  font-size: 13px;
  line-height: 1.5;
}

@media (min-width: 640px) {
  .inc-bs__wrap {
    padding: 0 32px;
  }

  .inc-bs-svg__label { font-size: 22px; letter-spacing: 0.1em; }
  .inc-bs-svg__pill-text { font-size: 22px; letter-spacing: 0.08em; }
  .inc-bs-svg__gap { font-size: 22px; }

  .inc-bs__visual {
    max-height: none;
  }

  .inc-bs__card-body {
    padding: 32px 28px 28px;
  }

  .inc-bs__build {
    padding: 20px 28px 24px;
  }
}

/* Three across only once each card can be at least 280px wide; never a 2 + 1 layout. */
@media (min-width: 960px) {
  .inc-bs__cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
    max-width: none;
  }
}

@media (min-width: 1024px) {
  .inc-bs__wrap {
    padding: 0 48px;
  }

  .inc-bs-svg__label { font-size: 16px; letter-spacing: 0.12em; }
  .inc-bs-svg__pill-text { font-size: 16px; letter-spacing: 0.08em; }
  .inc-bs-svg__gap { font-size: 16px; }
}

@media (hover: hover) and (min-width: 960px) {
  .inc-bs__card:hover {
    transform: translateY(-4px);
    box-shadow: 0 1px 2px rgba(17, 17, 17, 0.04), 0 18px 36px -20px rgba(17, 17, 17, 0.22);
  }
}

/*
  Scroll-in motion. reveal.js marks targets data-armed (paused at the first frame)
  and data-in once seen; without JS everything simply shows.
*/
.inc-bs__visual[data-armed] .inc-bs-svg__valley-group { animation: inc-fade 500ms ease both; }
.inc-bs__visual[data-armed] .inc-bs-svg__deck { stroke-dasharray: 500; stroke-dashoffset: 500; animation: inc-draw 1.2s var(--bba-ease) 400ms forwards; }
.inc-bs__visual[data-armed] .inc-bs-svg__arch { stroke-dasharray: 620; stroke-dashoffset: 620; animation: inc-draw 1.2s var(--bba-ease) 400ms forwards; }
.inc-bs__visual[data-armed] .inc-bs-svg__hangers { animation: inc-fade 400ms ease 1.1s both; }
.inc-bs__visual[data-armed] .inc-bs-svg__badge { animation: inc-fade 400ms ease 1.3s both; }
.inc-bs__visual[data-armed] .inc-bs-svg__gap-group { animation: inc-fade 500ms ease 600ms both; }

.inc-bs__cards[data-armed] .inc-bs__card {
  animation: inc-rise 500ms var(--bba-ease) both;
  animation-delay: calc(var(--i, 0) * 100ms);
}

.inc-bs__visual[data-armed]:not([data-in]) *,
.inc-bs__cards[data-armed]:not([data-in]) .inc-bs__card {
  animation-play-state: paused;
}

@media (prefers-reduced-motion: reduce) {
  .inc-bs__card {
    transition: none;
  }

  .inc-bs__card:hover {
    transform: none;
  }
}