/* People-Centric AI — High-impact, layered, premium enterprise page
   ACC branding • Alternating light/dark • Large typography • Floating cards • Animation-ready */

.pcai-body {
  --pcai-dark: #0a0e12;
  --pcai-dark-mid: #141c26;
  --pcai-dark-soft: #1a2433;
  --pcai-accent: #1abc9c;
  --pcai-accent-glow: rgba(26, 188, 156, 0.25);
  --pcai-text: #1a2332;
  --pcai-text-muted: #5c6f82;
  --pcai-bg: #ffffff;
  --pcai-bg-soft: #f6f8fb;
  --pcai-border: #e2e8f0;
  --pcai-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  --pcai-shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.12);
  --pcai-radius: 12px;
  --pcai-radius-xl: 20px;
  --pcai-space: 120px;
  --pcai-space-sm: 80px;
  font-family: var(--font-sans, 'Inter', sans-serif);
}

.pcai-main {
  overflow-x: hidden;
}

/* ========== Section 1 — Immersive Hero (80vh) ========== */
.pcai-hero-v2 {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, #0a0e12 0%, #0f161e 30%, #141c26 60%, #1a2433 100%);
  color: #fff;
  overflow: hidden;
}

.pcai-hero-v2-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

/* Abstract grid */
.pcai-hero-v2-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(26, 188, 156, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26, 188, 156, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 20%, transparent 70%);
}

/* Subtle glow line */
.pcai-hero-v2-glow {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(26, 188, 156, 0.4), transparent);
  opacity: 0.8;
}

.pcai-hero-v2-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 100px 24px 120px;
}

.pcai-hero-v2-headline {
  margin: 0 0 16px;
  font-size: clamp(3rem, 10vw, 5.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.04em;
  color: #fff;
}

.pcai-hero-v2-tagline {
  margin: 0 0 32px;
  font-size: clamp(1rem, 2.2vw, 1.35rem);
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.8);
}

.pcai-hero-v2-line {
  width: 80px;
  height: 3px;
  background: var(--pcai-accent);
  margin: 0 auto 40px;
  border-radius: 2px;
}

.pcai-hero-v2-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-bottom: 48px;
}

.pcai-hero-v2-badge {
  display: inline-flex;
  align-items: center;
  padding: 12px 22px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.95);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.pcai-hero-v2-btns {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}

.pcai-hero-v2-btns .btn-primary {
  background: var(--pcai-accent);
  color: #fff;
  padding: 16px 32px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--pcai-radius);
  box-shadow: 0 4px 24px var(--pcai-accent-glow);
}

.pcai-hero-v2-btns .btn-primary:hover {
  background: #16a085;
  text-decoration: none;
  transform: translateY(-1px);
}

.pcai-btn-light {
  background: transparent !important;
  color: #fff !important;
  border: 2px solid rgba(255, 255, 255, 0.4) !important;
}

.pcai-btn-light:hover {
  background: rgba(255, 255, 255, 0.08) !important;
  border-color: rgba(255, 255, 255, 0.6) !important;
  color: #fff !important;
  text-decoration: none;
}

/* ========== Section 2 — Strategic Statement ========== */
.pcai-statement {
  padding: var(--pcai-space) 24px;
  background: var(--pcai-bg);
  text-align: center;
}

.pcai-statement-lead {
  margin: 0 0 28px;
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--pcai-text);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.pcai-statement-support {
  margin: 0 auto;
  font-size: 1.1rem;
  color: var(--pcai-text-muted);
  line-height: 1.65;
  max-width: 560px;
}

/* ========== Section 3 — Split Architecture (60/40) ========== */
.pcai-arch-section {
  padding: var(--pcai-space) 24px;
  background: var(--pcai-bg-soft);
}

.pcai-arch-split {
  display: grid;
  grid-template-columns: 60fr 40fr;
  gap: 60px;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
}

@media (max-width: 900px) {
  .pcai-arch-split {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

.pcai-arch-stack {
  position: relative;
  max-width: 340px;
  margin: 0 auto;
}

.pcai-arch-stack-item {
  padding: 20px 28px;
  background: var(--pcai-bg);
  border: 1px solid var(--pcai-border);
  border-radius: var(--pcai-radius);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--pcai-text);
  text-align: center;
  box-shadow: var(--pcai-shadow);
  margin-bottom: 8px;
}

.pcai-arch-stack-item-bottom {
  background: var(--pcai-dark-mid);
  color: #fff;
  border-color: var(--pcai-dark-mid);
  margin-bottom: 0;
}

.pcai-arch-stack-arrow {
  text-align: center;
  font-size: 1.5rem;
  color: var(--pcai-accent);
  margin: 6px 0;
}

.pcai-arch-title {
  margin: 0 0 20px;
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 800;
  color: var(--pcai-text);
}

.pcai-arch-copy {
  margin: 0;
  font-size: 1.05rem;
  color: var(--pcai-text-muted);
  line-height: 1.65;
}

/* ========== Section 4 — Floating Glass Cards (dark) ========== */
.pcai-cards-section {
  padding: var(--pcai-space) 24px;
  background: linear-gradient(165deg, #0f161e 0%, #141c26 50%, #1a2433 100%);
  color: #fff;
  position: relative;
}

.pcai-cards-headline {
  margin: 0 0 64px;
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  text-align: center;
  color: #fff;
}

.pcai-cards-floating {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px 32px;
  max-width: 1100px;
  margin: 0 auto;
  position: relative;
}

/* Staggered vertical offset for visual energy */
.pcai-glass-card {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--pcai-radius-xl);
  padding: 32px 28px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  transform: translateY(calc(var(--stagger, 0) * 12px));
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.pcai-glass-card:nth-child(1) { --stagger: 0; }
.pcai-glass-card:nth-child(2) { --stagger: 1; }
.pcai-glass-card:nth-child(3) { --stagger: 2; }
.pcai-glass-card:nth-child(4) { --stagger: 1; }
.pcai-glass-card:nth-child(5) { --stagger: 0; }
.pcai-glass-card:nth-child(6) { --stagger: 2; }

.pcai-glass-card:hover {
  transform: translateY(calc(var(--stagger, 0) * 12px) - 8px);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(26, 188, 156, 0.2);
}

@media (max-width: 900px) {
  .pcai-cards-floating {
    grid-template-columns: repeat(2, 1fr);
  }
  .pcai-glass-card {
    transform: none;
  }
  .pcai-glass-card:hover {
    transform: translateY(-4px);
  }
}

@media (max-width: 560px) {
  .pcai-cards-floating {
    grid-template-columns: 1fr;
  }
}

.pcai-glass-icon {
  display: block;
  width: 48px;
  height: 48px;
  background: rgba(26, 188, 156, 0.2);
  border-radius: var(--pcai-radius);
  margin-bottom: 20px;
}

.pcai-glass-title {
  margin: 0 0 10px;
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
}

.pcai-glass-desc {
  margin: 0;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.5;
}

/* ========== Section 5 — Business Impact (large numbers) ========== */
.pcai-impact-section {
  padding: var(--pcai-space) 24px;
  background: var(--pcai-bg);
}

.pcai-impact-headline {
  margin: 0 0 56px;
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 800;
  text-align: center;
  color: var(--pcai-text);
}

.pcai-impact-blocks {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  max-width: 1100px;
  margin: 0 auto;
}

@media (max-width: 900px) {
  .pcai-impact-blocks {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 500px) {
  .pcai-impact-blocks {
    grid-template-columns: 1fr;
  }
}

.pcai-impact-num {
  text-align: center;
  padding: 40px 24px;
  background: var(--pcai-bg-soft);
  border-radius: var(--pcai-radius-xl);
  border: 1px solid var(--pcai-border);
  box-shadow: var(--pcai-shadow);
}

.pcai-impact-arrow {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--pcai-accent);
  margin-bottom: 8px;
}

.pcai-impact-value {
  display: block;
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--pcai-text);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.pcai-impact-label {
  display: block;
  margin-top: 8px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--pcai-text-muted);
}

/* ========== Section 6 — Use Case Strip ========== */
.pcai-strip {
  padding: var(--pcai-space-sm) 24px;
  background: linear-gradient(180deg, #f0f4f8 0%, #e8eef5 100%);
  border-top: 1px solid var(--pcai-border);
  border-bottom: 1px solid var(--pcai-border);
}

.pcai-strip-headline {
  margin: 0 0 48px;
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 800;
  text-align: center;
  color: var(--pcai-text);
}

.pcai-strip-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 0;
  align-items: stretch;
  max-width: 1000px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .pcai-strip-grid {
    grid-template-columns: 1fr;
  }
  .pcai-strip-divider {
    display: none;
  }
}

.pcai-strip-cell {
  padding: 32px 28px;
  text-align: center;
}

.pcai-strip-divider {
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--pcai-border), transparent);
  min-height: 60px;
  align-self: center;
}

.pcai-strip-role {
  margin: 0 0 12px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--pcai-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.pcai-strip-text {
  margin: 0;
  font-size: 0.95rem;
  color: var(--pcai-text-muted);
  line-height: 1.5;
}

/* ========== Section 7 — Differentiation (dark, 4 cols) ========== */
.pcai-diff-section {
  padding: var(--pcai-space) 24px;
  background: linear-gradient(165deg, #0f161e 0%, #141c26 100%);
  color: #fff;
}

.pcai-diff-headline {
  margin: 0 0 56px;
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  text-align: center;
  color: #fff;
}

.pcai-diff-cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  max-width: 1100px;
  margin: 0 auto;
}

@media (max-width: 900px) {
  .pcai-diff-cols {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 500px) {
  .pcai-diff-cols {
    grid-template-columns: 1fr;
  }
}

.pcai-diff-col {
  padding: 32px 24px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--pcai-radius);
  text-align: center;
}

.pcai-diff-col-title {
  margin: 0 0 12px;
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
}

.pcai-diff-col-text {
  margin: 0;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.5;
}

/* ========== Section 8 — High-Contrast CTA ========== */
.pcai-cta-v2 {
  padding: 120px 24px;
  background: var(--pcai-dark);
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.pcai-cta-v2::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(26, 188, 156, 0.5), transparent);
}

.pcai-cta-v2-headline {
  margin: 0 0 48px;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: #fff;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.pcai-cta-v2-btns {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}

.pcai-cta-v2-btns .btn-primary {
  background: var(--pcai-accent);
  color: #fff;
  padding: 16px 36px;
  font-size: 1.05rem;
  font-weight: 600;
  border-radius: var(--pcai-radius);
}

.pcai-cta-v2-btns .btn-primary:hover {
  background: #16a085;
  text-decoration: none;
}

.pcai-cta-v2-btns .pcai-btn-light {
  padding: 16px 36px;
  font-size: 1.05rem;
}