/* =============================================================================
   Black Belt Labs — Design System CSS
   Drop-in stylesheet matching the pitch deck design system.
   ============================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Geist+Mono:wght@400;500;600;700&family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  /* === COLOR TOKENS (mirror the PPTX design system + Office Theme Colors) === */

  /* Darks — backgrounds, deep text */
  --bbl-dark-spot:   #08062B;
  --bbl-dark-tint:   #122246;

  /* Navy — body text, secondary dark surfaces */
  --bbl-navy-spot:   #1B3E61;
  --bbl-navy-tint:   #045D7F;

  /* Blue family */
  --bbl-blue-spot:   #346DC9;
  --bbl-blue-tint:   #275595;
  --bbl-light-blue:  #8AAFFF;

  /* Cyan — SIGNATURE */
  --bbl-cyan-spot:   #04D1FF;
  --bbl-cyan-tint:   #9FE9FF;
  --bbl-teal:        #32D9DF;

  /* Purples — second signature */
  --bbl-purple-spot: #3D2894;
  --bbl-blurple:     #714BFB;
  --bbl-lavender:    #C493FF;

  /* Semantic */
  --bbl-red:         #FF4757;   /* error · cancel · destructive */
  --bbl-amber:       #FFC052;   /* warning · attention */
  --bbl-green:       #6DD267;   /* success · confirmation */
  --bbl-pink:        #FF92A8;   /* decorative warm */

  /* Neutrals */
  --bbl-white:       #FFFFFF;
  --bbl-white-tint:  #EEF7FF;   /* light section background */
  --bbl-muted-dark:  #5B6B85;
  --bbl-body-dark:   #1B3E61;

  /* === FONTS === */
  --bbl-font-head: 'Geist Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --bbl-font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;

  /* === SPACING === */
  --bbl-px:   0.25rem;
  --bbl-1:    0.5rem;
  --bbl-2:    1rem;
  --bbl-3:    1.5rem;
  --bbl-4:    2rem;
  --bbl-6:    3rem;
  --bbl-8:    4rem;
  --bbl-12:   6rem;
  --bbl-16:   8rem;

  /* === RADIUS === */
  --bbl-radius-sm: 4px;
  --bbl-radius:    8px;
  --bbl-radius-lg: 12px;

  /* === MAX WIDTHS === */
  --bbl-content: 1180px;
}

/* =============================================================================
   RESET + BASE
   ============================================================================= */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--bbl-font-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--bbl-body-dark);
  background: var(--bbl-white-tint);
  font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }

::selection {
  background: var(--bbl-cyan-spot);
  color: var(--bbl-dark-spot);
}

/* =============================================================================
   TYPOGRAPHY
   ============================================================================= */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--bbl-font-head);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--bbl-dark-spot);
}

h1 { font-size: clamp(2.5rem, 6vw, 5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: var(--bbl-3); }
h3 { font-size: clamp(1.3rem, 2.2vw, 1.65rem); margin-bottom: var(--bbl-2); }
h4 { font-size: 1.1rem; margin-bottom: var(--bbl-1); }

p { margin-bottom: var(--bbl-2); max-width: 70ch; }
p.lead {
  font-size: clamp(1.1rem, 1.6vw, 1.3rem);
  line-height: 1.55;
  color: var(--bbl-cyan-tint);
  max-width: 65ch;
}

a {
  color: var(--bbl-blue-spot);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  transition: color 0.15s ease;
}
a:hover { color: var(--bbl-cyan-spot); }

strong { font-weight: 700; color: var(--bbl-dark-spot); }
em { color: var(--bbl-blurple); font-style: italic; }

ul, ol { margin-bottom: var(--bbl-2); }

/* =============================================================================
   LAYOUT — SECTIONS
   ============================================================================= */
.bbl-section {
  padding: var(--bbl-12) var(--bbl-3);
  position: relative;
  overflow: hidden;
}
.bbl-section--dark {
  background: var(--bbl-dark-spot);
  color: var(--bbl-cyan-tint);
}
.bbl-section--dark h1,
.bbl-section--dark h2,
.bbl-section--dark h3 { color: var(--bbl-white); }
.bbl-section--dark strong { color: var(--bbl-white); }
.bbl-section--dark a { color: var(--bbl-cyan-spot); border-bottom-color: transparent; }
.bbl-section--dark a:hover { border-bottom-color: var(--bbl-cyan-spot); }
.bbl-section--dark em { color: var(--bbl-cyan-spot); }

/* Ambient orb decorations on dark sections */
.bbl-section--dark::before,
.bbl-section--dark::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  z-index: 0;
}
.bbl-section--dark::before {
  top: -15%;
  right: -10%;
  width: 480px;
  height: 480px;
  background: var(--bbl-blurple);
  opacity: 0.30;
}
.bbl-section--dark::after {
  bottom: -20%;
  left: -8%;
  width: 560px;
  height: 560px;
  background: var(--bbl-cyan-spot);
  opacity: 0.18;
}

.bbl-section--light {
  background: var(--bbl-white-tint);
  color: var(--bbl-body-dark);
}

.bbl-container {
  max-width: var(--bbl-content);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* =============================================================================
   EYEBROW LABEL
   ============================================================================= */
.bbl-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.85em;
  font-family: var(--bbl-font-head);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--bbl-cyan-spot);
  margin-bottom: var(--bbl-3);
}
.bbl-eyebrow::before {
  content: '';
  display: inline-block;
  width: 28px;
  height: 3px;
  background: var(--bbl-cyan-spot);
}

/* =============================================================================
   GRADIENT TEXT
   ============================================================================= */
.bbl-gradient-cyan-blurple {
  background: linear-gradient(95deg, var(--bbl-cyan-spot) 0%, var(--bbl-blurple) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.bbl-gradient-tri {
  background: linear-gradient(95deg, var(--bbl-blurple) 0%, var(--bbl-cyan-spot) 50%, var(--bbl-white) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* =============================================================================
   NAVIGATION
   ============================================================================= */
.bbl-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 6, 43, 0.92);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid rgba(159, 233, 255, 0.08);
}
.bbl-nav-inner {
  max-width: var(--bbl-content);
  margin: 0 auto;
  padding: var(--bbl-1) var(--bbl-3);
  display: flex;
  align-items: center;
  gap: var(--bbl-3);
  flex-wrap: wrap;
}
.bbl-nav .brand {
  display: flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--bbl-font-head);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.5px;
  color: var(--bbl-cyan-spot);
  border-bottom: none;
}
.bbl-nav .brand img {
  height: 36px;
  width: auto;
}
.bbl-nav ul {
  display: flex;
  gap: var(--bbl-3);
  list-style: none;
  margin: 0 0 0 auto;
  flex-wrap: wrap;
  align-items: center;
}
.bbl-nav ul a {
  font-family: var(--bbl-font-head);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--bbl-cyan-tint);
  border-bottom: none;
  transition: color 0.15s ease;
}
.bbl-nav ul a:hover { color: var(--bbl-cyan-spot); }
.bbl-nav ul .hiring a {
  color: var(--bbl-amber);
}

/* =============================================================================
   HERO
   ============================================================================= */
.bbl-hero {
  padding-top: var(--bbl-16);
  padding-bottom: var(--bbl-16);
}
.bbl-hero h1 {
  font-size: clamp(3rem, 9vw, 7rem);
  line-height: 1.0;
  letter-spacing: -0.03em;
  margin-bottom: var(--bbl-3);
  font-weight: 700;
}
.bbl-hero h1 .accent {
  display: block;
  font-size: 0.45em;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--bbl-white);
  margin-top: 0.2em;
}
.bbl-hero .lead {
  margin-top: var(--bbl-3);
  font-size: clamp(1.1rem, 1.6vw, 1.35rem);
  color: var(--bbl-cyan-tint);
}
.bbl-hero .lead + .lead { margin-top: var(--bbl-2); }
.bbl-hero .cta { margin-top: var(--bbl-6); }

/* =============================================================================
   CARDS
   ============================================================================= */
.bbl-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--bbl-2);
  margin-top: var(--bbl-4);
}
.bbl-card-grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.bbl-card {
  background: var(--bbl-white);
  border: 1px solid var(--bbl-cyan-tint);
  border-radius: var(--bbl-radius);
  padding: var(--bbl-3);
  position: relative;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.bbl-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--bbl-cyan-spot);
}
.bbl-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px -16px rgba(4, 209, 255, 0.4);
}
.bbl-card h3,
.bbl-card h4 {
  font-family: var(--bbl-font-head);
  margin-bottom: var(--bbl-1);
  color: var(--bbl-dark-spot);
}
.bbl-card p {
  font-size: 0.95rem;
  margin: 0;
  color: var(--bbl-navy-spot);
}
.bbl-card .bbl-card-num {
  display: block;
  font-family: var(--bbl-font-head);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--bbl-cyan-spot);
  margin-bottom: var(--bbl-1);
}

/* Card variant for dark sections */
.bbl-section--dark .bbl-card {
  background: var(--bbl-dark-tint);
  border-color: var(--bbl-navy-spot);
}
.bbl-section--dark .bbl-card h3,
.bbl-section--dark .bbl-card h4 {
  color: var(--bbl-white);
}
.bbl-section--dark .bbl-card p { color: var(--bbl-cyan-tint); }

/* =============================================================================
   NUMBERED LIST (for "Research Themes" etc.)
   ============================================================================= */
.bbl-numbered {
  list-style: none;
  counter-reset: bbl-counter;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--bbl-2);
  margin-top: var(--bbl-4);
}
.bbl-numbered li {
  counter-increment: bbl-counter;
  background: var(--bbl-dark-tint);
  border-radius: var(--bbl-radius);
  padding: var(--bbl-3);
  padding-left: calc(var(--bbl-3) + 3.2rem);
  position: relative;
  border-left: 4px solid var(--bbl-cyan-spot);
  color: var(--bbl-cyan-tint);
}
.bbl-numbered li::before {
  content: counter(bbl-counter, decimal-leading-zero);
  position: absolute;
  left: var(--bbl-3);
  top: var(--bbl-3);
  font-family: var(--bbl-font-head);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--bbl-cyan-spot);
  line-height: 1;
  letter-spacing: -0.02em;
}
.bbl-section--light .bbl-numbered li {
  background: var(--bbl-white);
  border: 1px solid var(--bbl-cyan-tint);
  border-left: 4px solid var(--bbl-cyan-spot);
  color: var(--bbl-navy-spot);
}

/* =============================================================================
   GOVERNANCE FLOW (3-tier hierarchy)
   ============================================================================= */
.bbl-flow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--bbl-2);
  margin-top: var(--bbl-4);
}
.bbl-flow-step {
  background: var(--bbl-white);
  border: 1px solid var(--bbl-cyan-tint);
  border-left: 4px solid var(--bbl-cyan-spot);
  border-radius: var(--bbl-radius);
  padding: var(--bbl-2) var(--bbl-3);
  max-width: 560px;
  width: 100%;
  text-align: center;
  position: relative;
}
.bbl-flow-step strong {
  display: block;
  font-family: var(--bbl-font-head);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--bbl-dark-spot);
  margin-bottom: 0.4em;
}
.bbl-flow-step span {
  font-size: 0.95rem;
  color: var(--bbl-navy-spot);
}
.bbl-flow-arrow {
  font-family: var(--bbl-font-head);
  font-size: 1.6rem;
  color: var(--bbl-cyan-spot);
  line-height: 1;
}

/* =============================================================================
   HOW IT WORKS — multi-step flowchart with branches
   ============================================================================= */
.bbl-howflow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--bbl-2);
  margin-top: var(--bbl-4);
}
.bbl-step {
  background: var(--bbl-white);
  border: 1px solid var(--bbl-cyan-tint);
  border-left: 4px solid var(--bbl-cyan-spot);
  border-radius: var(--bbl-radius);
  padding: var(--bbl-3);
  width: 100%;
  max-width: 760px;
  position: relative;
}
.bbl-step-num {
  display: block;
  font-family: var(--bbl-font-head);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--bbl-cyan-spot);
  margin-bottom: var(--bbl-1);
}
.bbl-step h3 {
  font-family: var(--bbl-font-head);
  font-size: 1.25rem;
  color: var(--bbl-dark-spot);
  margin-bottom: var(--bbl-1);
}
.bbl-step p {
  font-size: 0.95rem;
  color: var(--bbl-navy-spot);
  margin: 0;
  max-width: none;
}

/* Three parallel sub-options inside Step 2 */
.bbl-step-branches {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: var(--bbl-1);
  margin-top: var(--bbl-2);
}
.bbl-branch {
  background: var(--bbl-white-tint);
  border: 1px solid var(--bbl-cyan-tint);
  border-radius: var(--bbl-radius-sm);
  padding: var(--bbl-2);
  position: relative;
}
.bbl-branch::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--bbl-cyan-spot);
  border-radius: var(--bbl-radius-sm) 0 0 var(--bbl-radius-sm);
}
.bbl-branch h4 {
  font-family: var(--bbl-font-head);
  font-size: 0.95rem;
  color: var(--bbl-dark-spot);
  margin-bottom: 0.4em;
}
.bbl-branch p {
  font-size: 0.85rem;
  color: var(--bbl-navy-spot);
  margin: 0;
}

/* Divergence point — two arrows pointing toward the outcome cards below */
.bbl-howflow-split {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--bbl-12);
  margin: var(--bbl-1) 0;
}
.bbl-howflow-or {
  font-family: var(--bbl-font-head);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--bbl-blurple);
  padding: 0.4em 0.9em;
  border: 1.5px solid var(--bbl-blurple);
  border-radius: 100px;
  background: var(--bbl-white);
  text-align: center;
  white-space: nowrap;
  justify-self: center;
}
.bbl-flow-arrow--diverge {
  font-size: 1.8rem;
  color: var(--bbl-blurple);
}

/* Two outcomes (3a / 3b) with an OR pill between them */
.bbl-howflow-outcomes {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--bbl-2);
  align-items: center;
  width: 100%;
  max-width: 760px;
}
.bbl-step--outcome {
  border-left-color: var(--bbl-blurple);
  max-width: none;
}
.bbl-step--outcome .bbl-step-num {
  color: var(--bbl-blurple);
}

@media (max-width: 640px) {
  .bbl-howflow-outcomes {
    grid-template-columns: 1fr;
  }
  .bbl-howflow-split {
    gap: var(--bbl-6);
  }
}

/* =============================================================================
   QUOTES (Team section)
   ============================================================================= */
.bbl-quote {
  font-family: var(--bbl-font-body);
  font-size: clamp(1.05rem, 1.5vw, 1.3rem);
  font-style: italic;
  line-height: 1.5;
  color: var(--bbl-cyan-tint);
  border-left: 4px solid var(--bbl-cyan-spot);
  padding: var(--bbl-1) var(--bbl-3);
  margin: var(--bbl-3) 0;
  max-width: 800px;
}
.bbl-section--light .bbl-quote { color: var(--bbl-navy-spot); }
.bbl-quote cite {
  display: block;
  margin-top: var(--bbl-2);
  font-family: var(--bbl-font-head);
  font-style: normal;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--bbl-cyan-spot);
}

/* =============================================================================
   BUTTONS
   ============================================================================= */
.bbl-btn,
.bbl-section--dark a.bbl-btn,
.bbl-section--light a.bbl-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  padding: 0.95em 1.8em;
  font-family: var(--bbl-font-head);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 1px;
  border-radius: var(--bbl-radius);
  border: 0;
  cursor: pointer;
  text-decoration: none;
  border-bottom: none !important;
  transition: all 0.18s ease;
  white-space: nowrap;
}
.bbl-btn--primary,
.bbl-section--dark a.bbl-btn--primary,
.bbl-section--light a.bbl-btn--primary {
  background: var(--bbl-cyan-spot);
  color: var(--bbl-dark-spot);
}
.bbl-btn--primary:hover,
.bbl-section--dark a.bbl-btn--primary:hover,
.bbl-section--light a.bbl-btn--primary:hover {
  background: var(--bbl-cyan-tint);
  color: var(--bbl-dark-spot);
  transform: translateY(-1px);
  box-shadow: 0 8px 28px -6px rgba(4, 209, 255, 0.5);
}
.bbl-btn--ghost,
.bbl-section--dark a.bbl-btn--ghost {
  background: transparent;
  color: var(--bbl-cyan-spot);
  border: 2px solid var(--bbl-cyan-spot);
}
.bbl-btn--ghost:hover,
.bbl-section--dark a.bbl-btn--ghost:hover {
  background: var(--bbl-cyan-spot);
  color: var(--bbl-dark-spot);
}

/* =============================================================================
   FORM
   ============================================================================= */
.bbl-form {
  display: grid;
  gap: var(--bbl-2);
  max-width: 600px;
  margin-top: var(--bbl-3);
}
.bbl-form label {
  font-family: var(--bbl-font-head);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--bbl-muted-dark);
  margin-bottom: 0.3em;
  display: block;
}
.bbl-form input,
.bbl-form textarea {
  width: 100%;
  padding: 0.85em 1.1em;
  font-family: var(--bbl-font-body);
  font-size: 1rem;
  border: 1px solid var(--bbl-cyan-tint);
  border-radius: var(--bbl-radius-sm);
  background: var(--bbl-white);
  color: var(--bbl-dark-spot);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.bbl-form input:focus,
.bbl-form textarea:focus {
  outline: none;
  border-color: var(--bbl-cyan-spot);
  box-shadow: 0 0 0 3px rgba(4, 209, 255, 0.18);
}
.bbl-form textarea {
  min-height: 140px;
  resize: vertical;
}

/* =============================================================================
   FOOTER
   ============================================================================= */
.bbl-footer {
  background: var(--bbl-dark-spot);
  color: var(--bbl-muted-dark);
  padding: var(--bbl-4) var(--bbl-3);
  text-align: center;
  font-family: var(--bbl-font-body);
  font-size: 0.85rem;
  border-top: 1px solid rgba(159, 233, 255, 0.08);
}
.bbl-footer-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--bbl-cyan-spot);
  border-radius: 2px;
  vertical-align: middle;
  margin: 0 0.6em;
}

/* =============================================================================
   UTILITIES
   ============================================================================= */
.bbl-mt-3 { margin-top: var(--bbl-3); }
.bbl-mt-4 { margin-top: var(--bbl-4); }
.bbl-mt-6 { margin-top: var(--bbl-6); }
.bbl-mb-3 { margin-bottom: var(--bbl-3); }

/* =============================================================================
   RESPONSIVE
   ============================================================================= */
@media (max-width: 768px) {
  body { font-size: 16px; }
  .bbl-section { padding: var(--bbl-8) var(--bbl-2); }
  .bbl-hero { padding-top: var(--bbl-12); padding-bottom: var(--bbl-12); }
  .bbl-nav-inner { padding: var(--bbl-1) var(--bbl-2); gap: var(--bbl-2); }
  .bbl-nav ul { gap: var(--bbl-2); }
}

/* =============================================================================
   ANIMATION — subtle entrance for hero on first paint
   ============================================================================= */
@keyframes bbl-rise {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
.bbl-hero h1,
.bbl-hero .lead,
.bbl-hero .cta {
  animation: bbl-rise 0.7s cubic-bezier(0.2, 0.9, 0.3, 1) backwards;
}
.bbl-hero h1   { animation-delay: 0.05s; }
.bbl-hero .lead { animation-delay: 0.20s; }
.bbl-hero .cta  { animation-delay: 0.35s; }