/* ===================================
   CHIEF AI OFFICER SECTION — shared styles
   Used by /chief-ai-officer and its spokes
   =================================== */

/* ==================
   HERO
   ================== */
.caio-hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  min-height: 88vh;
}

.caio-hero--sub { min-height: 60vh; }

.caio-hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 24%, rgba(52, 211, 153, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 70%, rgba(129, 140, 248, 0.06) 0%, transparent 55%);
}

.caio-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 70%, var(--bg-page) 100%);
}

.caio-hero__content {
  position: relative;
  z-index: 2;
  padding: 160px 0 120px;
  max-width: 980px;
  text-align: center;
}

.caio-hero--sub .caio-hero__content { padding: 150px 0 88px; }

.caio-hero__title {
  font-family: var(--font-display);
  font-size: clamp(38px, 5.2vw, 66px);
  font-weight: 400;
  line-height: 1.06;
  letter-spacing: -2.5px;
  margin-bottom: 28px;
}

.caio-hero__title span { display: block; }

.caio-hero__sub {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 740px;
  margin: 0 auto 40px;
}

.caio-crumb {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 22px;
}

.caio-crumb a { color: var(--text-secondary); transition: color 0.3s var(--ease-out); }
.caio-crumb a:hover { color: var(--accent-green); }
.caio-crumb span[aria-hidden] { color: var(--text-dim); }

/* ==================
   SECTION SHELL
   ================== */
.caio-section { padding: 130px 0; background: var(--bg-page); }
.caio-section--alt { background: var(--bg-section-alt); }

.caio-lede {
  font-size: 17px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 18px;
}

.caio-lede strong { color: var(--text-primary); font-weight: 600; }

.caio-split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 88px;
  align-items: center;
}

.caio-split > * { min-width: 0; }

.caio-split__title {
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -2px;
  color: var(--text-primary);
  margin-bottom: 26px;
}

/* ==================
   EVIDENCE STATS
   ================== */
.caio-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.caio-stats > * { min-width: 0; }

.caio-stat {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-2xl);
  padding: 36px 28px;
  transition: border-color 0.4s var(--ease-out), transform 0.4s var(--ease-out);
}

.caio-stat:hover { border-color: var(--border-strong); transform: translateY(-3px); }

.caio-stat__num {
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 500;
  letter-spacing: -1.8px;
  line-height: 1;
  color: var(--accent-green);
  margin-bottom: 12px;
}

.caio-stat__num--indigo { color: var(--accent-indigo); }
.caio-stat__num--amber { color: var(--accent-amber); }
.caio-stat__num--coral { color: var(--accent-coral); }

.caio-stat__label { font-size: 14px; line-height: 1.55; color: var(--text-secondary); margin-bottom: 12px; }

.caio-stat__src {
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
  font-size: 11.5px;
  line-height: 1.5;
  color: var(--text-dim);
}

.caio-stat__src a { color: var(--text-muted); }
.caio-stat__src a:hover { color: var(--accent-green); }

/* ==================
   RESPONSIBILITY CARDS
   ================== */
.caio-owns { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.caio-owns > * { min-width: 0; }

.caio-own {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-2xl);
  padding: 38px 32px;
  transition: all 0.45s var(--ease-out);
}

.caio-own:hover {
  border-color: rgba(52, 211, 153, 0.28);
  background: var(--bg-elevated);
  transform: translateY(-4px);
}

.caio-own__icon {
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  font-size: 21px;
  margin-bottom: 22px;
  color: var(--accent-green);
  background: rgba(52, 211, 153, 0.1);
  border: 1px solid rgba(52, 211, 153, 0.2);
}

.caio-own__icon--indigo { color: var(--accent-indigo); background: rgba(129,140,248,.1); border-color: rgba(129,140,248,.2); }
.caio-own__icon--amber  { color: var(--accent-amber);  background: rgba(251,191,36,.1);  border-color: rgba(251,191,36,.2); }
.caio-own__icon--coral  { color: var(--accent-coral);  background: rgba(251,113,133,.1); border-color: rgba(251,113,133,.2); }

.caio-own__title {
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.caio-own__desc { font-size: 14.5px; line-height: 1.7; color: var(--text-muted); }

/* ==================
   USE CASE LIBRARY
   ================== */
.caio-dept {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-2xl);
  padding: 44px 40px;
  margin-bottom: 20px;
}

.caio-dept__head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-bottom: 24px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--border-subtle);
}

.caio-dept__icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  font-size: 20px;
  color: var(--accent-green);
  background: rgba(52, 211, 153, 0.1);
  border: 1px solid rgba(52, 211, 153, 0.2);
}

.caio-dept__title {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 500;
  letter-spacing: -1px;
  color: var(--text-primary);
}

.caio-dept__sub { font-size: 14px; color: var(--text-muted); margin-top: 4px; }

.caio-cases { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.caio-cases > * { min-width: 0; }

.caio-case {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 26px 24px;
}

.caio-case__name {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.caio-case__what { font-size: 14px; line-height: 1.65; color: var(--text-secondary); margin-bottom: 14px; }

.caio-case__meta { display: flex; flex-direction: column; gap: 7px; }

.caio-case__row {
  display: flex;
  gap: 8px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--text-dim);
}

.caio-case__row b {
  flex-shrink: 0;
  font-weight: 600;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  font-size: 10.5px;
  padding-top: 1px;
  color: var(--text-muted);
  min-width: 62px;
}

.caio-case__row--metric { color: var(--accent-green); }
.caio-case__row--metric b { color: var(--accent-green); opacity: 0.75; }

/* ==================
   TIERS
   ================== */
.caio-tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: start; }
.caio-tiers > * { min-width: 0; }

.caio-tier {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-2xl);
  padding: 42px 34px;
  transition: all 0.45s var(--ease-out);
}

.caio-tier:hover { border-color: var(--border-strong); transform: translateY(-4px); }

.caio-tier--featured {
  border-color: rgba(52, 211, 153, 0.35);
  background: linear-gradient(180deg, rgba(52, 211, 153, 0.05) 0%, var(--bg-card) 40%);
}

.caio-tier__tag {
  position: absolute;
  top: -12px;
  left: 34px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--bg-page);
  background: var(--accent-green);
  border-radius: var(--radius-pill);
  padding: 5px 14px;
}

.caio-tier__name {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 500;
  letter-spacing: -1px;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.caio-tier__for { font-size: 14px; line-height: 1.6; color: var(--text-secondary); margin-bottom: 22px; }

.caio-tier__meta {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 18px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 24px;
}

.caio-tier__meta-row { display: flex; align-items: center; gap: 10px; font-size: 13.5px; color: var(--text-muted); }
.caio-tier__meta-row i { color: var(--accent-green); font-size: 15px; }
.caio-tier__meta-row b { color: var(--text-primary); font-weight: 600; }

.caio-tier__list { list-style: none; padding: 0; margin: 0 0 30px; }

.caio-tier__list li {
  position: relative;
  padding: 0 0 12px 26px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
}

.caio-tier__list li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-green);
}

.caio-tier__cta { display: block; text-align: center; }

/* ==================
   BOUNDARY BAND (leadership vs build)
   ================== */
.caio-boundary { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.caio-boundary > * { min-width: 0; }

.caio-boundary__col {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-2xl);
  padding: 40px 36px;
}

.caio-boundary__col--lead { border-color: rgba(52, 211, 153, 0.25); }
.caio-boundary__col--build { border-color: rgba(129, 140, 248, 0.25); }

.caio-boundary__eyebrow {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.caio-boundary__col--lead .caio-boundary__eyebrow { color: var(--accent-green); }
.caio-boundary__col--build .caio-boundary__eyebrow { color: var(--accent-indigo); }

.caio-boundary__title {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 500;
  letter-spacing: -1px;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.caio-boundary__desc { font-size: 14.5px; line-height: 1.7; color: var(--text-muted); margin-bottom: 20px; }

.caio-boundary__list { list-style: none; padding: 0; margin: 0 0 24px; }

.caio-boundary__list li {
  position: relative;
  padding: 0 0 11px 22px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
}

.caio-boundary__list li::before {
  content: '';
  position: absolute;
  left: 3px;
  top: 8px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
}

.caio-boundary__col--lead .caio-boundary__list li::before { background: var(--accent-green); }
.caio-boundary__col--build .caio-boundary__list li::before { background: var(--accent-indigo); }

.caio-boundary__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--accent-green);
}

.caio-boundary__col--build .caio-boundary__link { color: var(--accent-indigo); }

/* ==================
   FIT / NOT FIT
   ================== */
.caio-fit { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.caio-fit > * { min-width: 0; }

.caio-fit__col {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-2xl);
  padding: 40px 36px;
}

.caio-fit__col--yes { border-color: rgba(52, 211, 153, 0.22); }
.caio-fit__col--no { border-color: rgba(251, 113, 133, 0.22); }

.caio-fit__title {
  display: flex;
  align-items: center;
  gap: 11px;
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.caio-fit__col--yes .caio-fit__title i { color: var(--accent-green); }
.caio-fit__col--no .caio-fit__title i { color: var(--accent-coral); }

.caio-fit__list { list-style: none; padding: 0; margin: 0; }

.caio-fit__list li {
  position: relative;
  padding: 0 0 15px 24px;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--text-secondary);
}

.caio-fit__list li:last-child { padding-bottom: 0; }

.caio-fit__list li::before {
  content: '';
  position: absolute;
  left: 3px;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.caio-fit__col--yes .caio-fit__list li::before { background: var(--accent-green); }
.caio-fit__col--no .caio-fit__list li::before { background: var(--accent-coral); }

/* ==================
   PHASES
   ================== */
.caio-phases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.caio-phases > * { min-width: 0; }

.caio-phase {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-2xl);
  padding: 36px 32px;
}

.caio-phase__num {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--accent-green);
  margin-bottom: 16px;
}

.caio-phase__title {
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.caio-phase__desc { font-size: 14.5px; line-height: 1.7; color: var(--text-muted); }

/* ==================
   SPOKES
   ================== */
.caio-spokes { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.caio-spokes > * { min-width: 0; }

.caio-spoke {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-2xl);
  padding: 38px 34px;
  transition: all 0.45s var(--ease-out);
}

.caio-spoke:hover {
  border-color: rgba(52, 211, 153, 0.3);
  background: var(--bg-elevated);
  transform: translateY(-4px);
}

.caio-spoke__eyebrow {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--accent-green);
  margin-bottom: 14px;
}

.caio-spoke__title {
  font-family: var(--font-display);
  font-size: 27px;
  font-weight: 500;
  letter-spacing: -1px;
  color: var(--text-primary);
  margin-bottom: 13px;
}

.caio-spoke__desc { font-size: 14.5px; line-height: 1.7; color: var(--text-muted); }

.caio-spoke__arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 22px;
  font-size: 14px;
  font-weight: 500;
  color: var(--accent-green);
}

/* ==================
   COMPARISON TABLE
   ================== */
.caio-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-2xl);
  background: var(--bg-card);
}

.caio-table { width: 100%; border-collapse: collapse; min-width: 660px; }

.caio-table th,
.caio-table td {
  padding: 17px 24px;
  text-align: left;
  font-size: 14.5px;
  border-bottom: 1px solid var(--border-subtle);
}

.caio-table thead th {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--bg-elevated);
}

.caio-table tbody tr:last-child td { border-bottom: none; }
.caio-table tbody tr:hover { background: rgba(255, 255, 255, 0.015); }

.caio-table td:first-child { color: var(--text-primary); font-weight: 500; }
.caio-table td:nth-child(2),
.caio-table td:nth-child(3) { color: var(--text-secondary); }

.caio-table__note {
  margin-top: 16px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ==================
   CTA BAND
   ================== */
.caio-cta { padding: 120px 0; background: var(--bg-section-alt); }

.caio-cta__inner {
  position: relative;
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid rgba(52, 211, 153, 0.2);
  border-radius: var(--radius-2xl);
  padding: 66px 60px;
  text-align: center;
}

.caio-cta__inner::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse at 50% 0%, rgba(52, 211, 153, 0.08) 0%, transparent 65%);
}

.caio-cta__title {
  position: relative;
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 500;
  letter-spacing: -1.8px;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.caio-cta__sub {
  position: relative;
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--text-secondary);
  max-width: 660px;
  margin: 0 auto 36px;
}

.caio-cta__ctas {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

/* ==================
   RESPONSIVE
   ================== */
@media (max-width: 1024px) {
  .caio-section { padding: 100px 0; }
  .caio-split { grid-template-columns: 1fr; gap: 48px; }
  .caio-split__title { font-size: 36px; }
  .caio-stats { grid-template-columns: repeat(2, 1fr); }
  .caio-owns { grid-template-columns: repeat(2, 1fr); }
  .caio-tiers { grid-template-columns: 1fr; }
  .caio-phases { grid-template-columns: repeat(2, 1fr); }
  .caio-dept { padding: 34px 26px; }
  .caio-cta__inner { padding: 52px 36px; }
  .caio-cta__title { font-size: 32px; }
}

@media (max-width: 768px) {
  .caio-hero__content { padding: 130px 0 90px; }
  .caio-hero__sub { font-size: 16px; }
  .caio-stats { grid-template-columns: 1fr; }
  .caio-owns { grid-template-columns: 1fr; }
  .caio-cases { grid-template-columns: 1fr; }
  .caio-spokes { grid-template-columns: 1fr; }
  .caio-fit { grid-template-columns: 1fr; }
  .caio-boundary { grid-template-columns: 1fr; }
  .caio-phases { grid-template-columns: 1fr; }
  .caio-dept__title { font-size: 23px; }
}

@media (prefers-reduced-motion: reduce) {
  .caio-stat:hover, .caio-own:hover, .caio-tier:hover, .caio-spoke:hover { transform: none; }
}