:root {
  --bf-ink: #f8fbff;
  --bf-muted: rgba(226, 232, 240, 0.76);
  --bf-soft: rgba(255, 255, 255, 0.075);
  --bf-line: rgba(255, 255, 255, 0.15);
  --bf-cyan: #16b8d9;
  --bf-teal: #2dd4bf;
  --bf-gold: #f8c14a;
  --bf-navy: #06111f;
  --bf-deep: #020817;
  --bf-panel: rgba(8, 20, 36, 0.78);
  --bf-panel-strong: rgba(10, 25, 44, 0.94);
  --bf-radius-lg: 34px;
  --bf-radius-md: 22px;
  --bf-shadow: 0 30px 90px rgba(0, 0, 0, 0.35);
}

.builder-file-shell {
  min-height: 100vh;
  overflow: hidden;
  background:
    radial-gradient(circle at 18% 8%, rgba(22, 184, 217, 0.2), transparent 30%),
    radial-gradient(circle at 86% 16%, rgba(248, 193, 74, 0.13), transparent 28%),
    radial-gradient(circle at 50% 62%, rgba(45, 212, 191, 0.1), transparent 34%),
    linear-gradient(180deg, #03101f 0%, #071827 46%, #020817 100%);
  color: var(--bf-ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.builder-file-shell *,
.builder-file-shell *::before,
.builder-file-shell *::after {
  box-sizing: border-box;
}

.bf-hero {
  position: relative;
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(92px, 10vw, 150px) 24px 44px;
}

.bf-hero::before {
  content: "";
  position: absolute;
  top: 86px;
  right: 24px;
  width: 360px;
  height: 360px;
  border-radius: 999px;
  background:
    radial-gradient(circle, rgba(22, 184, 217, 0.24), transparent 58%),
    conic-gradient(
      from 140deg,
      rgba(22, 184, 217, 0.32),
      rgba(45, 212, 191, 0.08),
      rgba(248, 193, 74, 0.22),
      rgba(22, 184, 217, 0.32)
    );
  filter: blur(2px);
  opacity: 0.66;
  animation: bfPulse 9s ease-in-out infinite;
}

.bf-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  gap: clamp(30px, 5vw, 72px);
  align-items: center;
}

.bf-back-link {
  display: inline-flex;
  width: fit-content;
  margin-bottom: 28px;
  color: var(--bf-muted);
  font-size: 0.92rem;
  font-weight: 800;
  text-decoration: none;
  transition: color 180ms ease, transform 180ms ease;
}

.bf-back-link:hover {
  color: var(--bf-ink);
  transform: translateX(-3px);
}

.bf-kicker {
  margin: 0 0 14px;
  color: var(--bf-teal);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.bf-hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(3.9rem, 10vw, 8rem);
  line-height: 0.86;
  letter-spacing: -0.085em;
}

.bf-hero__lede {
  max-width: 680px;
  margin: 28px 0 0;
  color: var(--bf-muted);
  font-size: clamp(1.05rem, 2vw, 1.28rem);
  line-height: 1.7;
}

.bf-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.bf-btn {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0 22px;
  font-weight: 850;
  text-decoration: none;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.bf-btn:hover {
  transform: translateY(-2px);
}

.bf-btn--primary {
  background: linear-gradient(135deg, var(--bf-cyan), var(--bf-teal));
  color: #03111f;
  box-shadow: 0 18px 44px rgba(22, 184, 217, 0.22);
}

.bf-btn--secondary {
  border: 1px solid var(--bf-line);
  background: rgba(255, 255, 255, 0.06);
  color: var(--bf-ink);
}

/* ---------------- Dossier header (current markup) ---------------- */
.bf-dossier__inner { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.bf-avatar {
  display: grid;
  flex: 0 0 auto;
  width: 64px;
  height: 64px;
  place-items: center;
  border: 1px solid rgba(20,184,166,.28);
  border-radius: 18px;
  background: rgba(20,184,166,.12);
  color: var(--teal-deep, #0f766e);
  font-weight: 950;
  font-size: 20px;
  letter-spacing: -.03em;
  overflow: hidden;
}
.bf-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 17px;
}
.bf-avatar.has-photo span { display: none; }
.bf-dossier__namerow { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.bf-dossier__name { font-weight: 900; font-size: 20px; letter-spacing: -.02em; color: var(--ink, #07111f); }
.bf-dossier__tag {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 4px 10px;
  background: rgba(20,184,166,.12);
  border: 1px solid rgba(20,184,166,.28);
  color: var(--teal-deep, #0f766e);
  font-size: 11px;
  font-weight: 850;
  letter-spacing: .02em;
}
.bf-dossier__lede { margin: 6px 0 0; color: var(--muted-2, #64748b); font-size: 14px; line-height: 1.5; max-width: 520px; }
.bf-dossier__stats { display: flex; gap: 10px; flex-wrap: wrap; margin-left: auto; }
@media (max-width: 900px) {
  .bf-dossier__stats { margin-left: 0; }
}

/* ---------------- Empty states + review split (current markup) ---------------- */
.bf-empty { padding: 16px 18px; border: 1px dashed var(--line-2, #e2e8f0); border-radius: 14px; background: #fafcfd; }
.bf-empty p { margin: 0 0 10px; font-size: 13px; line-height: 1.5; color: var(--muted-2, #64748b); font-weight: 500; }
.bf-empty p:last-child { margin-bottom: 0; }
.bf-empty a { display: inline-flex; align-items: center; gap: 6px; font-weight: 800; font-size: 12.5px; color: #fff; background: var(--teal-deep, #0f766e); border-radius: 999px; padding: 8px 16px; text-decoration: none; }
.bf-empty a:hover { background: #0c5e57; }

.bf-review-split { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.bf-review-split__label { margin: 0 0 10px; font-size: 11px; font-weight: 850; letter-spacing: .06em; text-transform: uppercase; color: var(--faint, #94a3b8); }
@media (max-width: 700px) {
  .bf-review-split { grid-template-columns: 1fr; }
}

.bf-dossier-card {
  border: 1px solid var(--bf-line);
  border-radius: var(--bf-radius-lg);
  padding: 24px;
  background:
    radial-gradient(circle at top right, rgba(22, 184, 217, 0.16), transparent 44%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.105), rgba(255, 255, 255, 0.045));
  box-shadow: var(--bf-shadow);
  backdrop-filter: blur(18px);
}

.bf-dossier-card__top {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-bottom: 24px;
}

.bf-avatar {
  display: grid;
  flex: 0 0 auto;
  width: 72px;
  height: 72px;
  place-items: center;
  border: 1px solid rgba(22, 184, 217, 0.42);
  border-radius: 24px;
  background: rgba(22, 184, 217, 0.12);
  color: var(--bf-ink);
  font-weight: 950;
  letter-spacing: -0.05em;
}

.bf-status {
  display: inline-flex;
  margin-bottom: 8px;
  border: 1px solid rgba(45, 212, 191, 0.34);
  border-radius: 999px;
  padding: 7px 10px;
  background: rgba(45, 212, 191, 0.1);
  color: var(--bf-teal);
  font-size: 0.75rem;
  font-weight: 850;
}

.bf-dossier-card h2 {
  margin: 0;
  font-size: 1.3rem;
  line-height: 1.1;
}

.bf-dossier-meta {
  display: grid;
  gap: 15px;
  margin: 0;
}

.bf-dossier-meta div {
  border-top: 1px solid var(--bf-line);
  padding-top: 14px;
}

.bf-dossier-meta dt {
  color: var(--bf-teal);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.bf-dossier-meta dd {
  margin: 6px 0 0;
  color: var(--bf-muted);
  line-height: 1.55;
}

.bf-section-nav {
  display: flex;
  gap: 10px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px 44px;
  overflow-x: auto;
}

.bf-section-nav a {
  flex: 0 0 auto;
  border: 1px solid var(--bf-line);
  border-radius: 999px;
  padding: 12px 15px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--bf-muted);
  font-size: 0.86rem;
  font-weight: 750;
  text-decoration: none;
  transition: color 180ms ease, border-color 180ms ease, background 180ms ease;
}

.bf-section-nav a:hover {
  border-color: rgba(22, 184, 217, 0.5);
  background: rgba(22, 184, 217, 0.1);
  color: var(--bf-ink);
}

.bf-mission,
.bf-signals,
.bf-field-notes,
.bf-experiments,
.bf-studio-link,
.bf-library-link,
.bf-final-cta {
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(52px, 7vw, 92px) 24px;
}

.bf-section-heading {
  margin-bottom: 30px;
}

.bf-section-heading h2,
.bf-studio-link h2,
.bf-library-link h2,
.bf-final-cta h2 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(2.15rem, 5vw, 4.65rem);
  line-height: 0.96;
  letter-spacing: -0.065em;
}

.bf-section-heading p,
.bf-studio-link p,
.bf-library-link p,
.bf-final-cta p {
  max-width: 760px;
  color: var(--bf-muted);
  font-size: 1.02rem;
  line-height: 1.75;
}

.bf-mission-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 390px;
  gap: 24px;
  align-items: stretch;
}

.bf-open-panel {
  display: flex;
  min-height: 460px;
  flex-direction: column;
  justify-content: flex-end;
  border: 1px solid var(--bf-line);
  border-radius: var(--bf-radius-lg);
  padding: clamp(24px, 4vw, 38px);
  background:
    radial-gradient(circle at 18% 12%, rgba(22, 184, 217, 0.14), transparent 34%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.04));
  box-shadow: var(--bf-shadow);
}

.bf-open-panel h3 {
  max-width: 620px;
  margin: 0 0 14px;
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  line-height: 1;
  letter-spacing: -0.055em;
}

.bf-open-panel p {
  max-width: 650px;
  margin: 0;
  color: var(--bf-muted);
  font-size: 1.04rem;
  line-height: 1.75;
}

.bf-mission-rail {
  display: grid;
  gap: 14px;
}

.bf-mission-rail article {
  border: 1px solid var(--bf-line);
  border-radius: var(--bf-radius-md);
  padding: 22px;
  background: rgba(255, 255, 255, 0.055);
}

.bf-mission-rail span {
  display: inline-flex;
  margin-bottom: 30px;
  color: var(--bf-gold);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.bf-mission-rail h3 {
  margin: 0 0 8px;
  font-size: 1.25rem;
}

.bf-mission-rail p {
  margin: 0;
  color: var(--bf-muted);
  line-height: 1.6;
}

.bf-signal-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.bf-signal-grid button {
  cursor: pointer;
  min-height: 160px;
  border: 1px solid var(--bf-line);
  border-radius: var(--bf-radius-md);
  padding: 20px;
  background: rgba(255, 255, 255, 0.055);
  color: var(--bf-ink);
  font: inherit;
  font-weight: 850;
  text-align: left;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.bf-signal-grid button:hover,
.bf-signal-grid button.is-active {
  transform: translateY(-3px);
  border-color: rgba(22, 184, 217, 0.65);
  background: rgba(22, 184, 217, 0.13);
}

.bf-signal-grid span {
  display: block;
  margin-bottom: 26px;
  font-size: 2rem;
}

.bf-signal-output {
  margin-top: 16px;
  border: 1px solid rgba(45, 212, 191, 0.28);
  border-radius: var(--bf-radius-md);
  padding: 20px;
  background: rgba(45, 212, 191, 0.075);
  color: var(--bf-muted);
  line-height: 1.65;
}

.bf-note-stream {
  display: grid;
  gap: 14px;
}

.bf-note-stream article {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-items: center;
  border: 1px solid var(--bf-line);
  border-radius: var(--bf-radius-md);
  padding: 22px;
  background: rgba(255, 255, 255, 0.055);
}

.bf-note-stream p {
  margin: 0;
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  line-height: 1.45;
}

.bf-note-stream span {
  color: var(--bf-teal);
  font-size: 0.84rem;
  font-weight: 800;
}

.bf-experiment-board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.bf-experiment-board article {
  min-height: 260px;
  border: 1px solid var(--bf-line);
  border-radius: var(--bf-radius-md);
  padding: 22px;
  background:
    radial-gradient(circle at top right, rgba(248, 193, 74, 0.12), transparent 38%),
    rgba(255, 255, 255, 0.055);
}

.bf-chip {
  display: inline-flex;
  margin-bottom: 42px;
  border: 1px solid rgba(248, 193, 74, 0.28);
  border-radius: 999px;
  padding: 7px 10px;
  background: rgba(248, 193, 74, 0.09);
  color: var(--bf-gold);
  font-size: 0.76rem;
  font-weight: 850;
}

.bf-experiment-board h3 {
  margin: 0 0 10px;
  font-size: 1.45rem;
}

.bf-experiment-board p {
  margin: 0;
  color: var(--bf-muted);
  line-height: 1.65;
}

.bf-studio-link,
.bf-library-link {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 28px;
  align-items: center;
}

.bf-orbit-link {
  display: flex;
  min-height: 110px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--bf-line);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.065);
  color: var(--bf-ink);
  font-size: 1.1rem;
  font-weight: 900;
  text-decoration: none;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.bf-orbit-link:hover {
  transform: translateX(-5px);
  border-color: rgba(22, 184, 217, 0.55);
  background: rgba(22, 184, 217, 0.12);
}

.bf-final-cta {
  padding-bottom: clamp(80px, 10vw, 132px);
}

.bf-final-cta {
  text-align: left;
}

.bf-final-cta .bf-btn {
  margin-top: 18px;
}

@keyframes bfPulse {
  0%,
  100% {
    transform: scale(1) rotate(0deg);
    opacity: 0.52;
  }

  50% {
    transform: scale(1.08) rotate(18deg);
    opacity: 0.84;
  }
}

@media (max-width: 980px) {
  .bf-hero__grid,
  .bf-mission-layout,
  .bf-studio-link,
  .bf-library-link {
    grid-template-columns: 1fr;
  }

  .bf-signal-grid,
  .bf-experiment-board {
    grid-template-columns: 1fr;
  }

  .bf-open-panel {
    min-height: 360px;
  }
}

@media (max-width: 620px) {
  .bf-hero {
    padding: 78px 18px 36px;
  }

  .bf-hero h1 {
    font-size: clamp(4rem, 19vw, 6.1rem);
  }

  .bf-dossier-card__top {
    align-items: flex-start;
  }

  .bf-section-nav {
    padding-left: 18px;
    padding-right: 18px;
  }

  .bf-mission,
  .bf-signals,
  .bf-field-notes,
  .bf-experiments,
  .bf-studio-link,
  .bf-library-link,
  .bf-final-cta {
    padding-left: 18px;
    padding-right: 18px;
  }

  .bf-note-stream article {
    grid-template-columns: 1fr;
  }

  .bf-studio-link,
  .bf-library-link {
    gap: 18px;
  }

  .bf-orbit-link {
    min-height: 86px;
  }
}