/* ============================================================
   Critical Insight Inc. — Global Stylesheet
   criticalinsight.ai
   ============================================================ */

/* ---------- Reset & Base ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --black:        #000000;
  --surface:      #07070F;
  --surface-mid:  #0D0D1A;
  --surface-card: #111122;
  --border:       rgba(80, 140, 255, 0.15);
  --border-glow:  rgba(80, 180, 255, 0.35);

  --blue:         #3B9EFF;
  --cyan:         #00D4FF;
  --violet:       #7B5FFF;
  --blue-dim:     rgba(59, 158, 255, 0.12);
  --violet-dim:   rgba(123, 95, 255, 0.10);

  --text-primary:   #F0F4FF;
  --text-secondary: #9AAAC8;
  --text-muted:     #5A6A8A;

  --grad-heading: linear-gradient(135deg, #3B9EFF 0%, #00D4FF 50%, #7B5FFF 100%);
  --grad-hero:    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(59,158,255,0.18) 0%, transparent 70%),
                  radial-gradient(ellipse 50% 40% at 80% 30%, rgba(123,95,255,0.12) 0%, transparent 60%);
  --grad-card:    linear-gradient(145deg, #111122 0%, #0D0D1A 100%);

  --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --max-w: 1120px;
  --section-pad: 96px 24px;
  --section-pad-sm: 64px 20px;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--surface);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

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

a {
  color: var(--blue);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--cyan);
}

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

/* ---------- Typography ---------- */
.grad-text {
  background: var(--grad-heading);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h1, h2, h3, h4 {
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 700;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.6rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
h4 { font-size: 1.1rem; font-weight: 600; }

p { color: var(--text-secondary); }

/* ---------- Layout Containers ---------- */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-pad);
}

.section--dark {
  background: var(--black);
}

.section--mid {
  background: var(--surface-mid);
}

/* ---------- Navigation ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 7, 15, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__brand {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  text-decoration: none;
}

.nav__brand span {
  background: var(--grad-heading);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav__links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav__links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  letter-spacing: 0.01em;
  transition: color 0.2s;
}

.nav__links a:hover,
.nav__links a.active {
  color: var(--text-primary);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn--primary {
  background: linear-gradient(135deg, var(--blue) 0%, var(--violet) 100%);
  color: #fff;
  box-shadow: 0 0 20px rgba(59, 158, 255, 0.25);
}

.btn--primary:hover {
  box-shadow: 0 0 32px rgba(59, 158, 255, 0.45);
  transform: translateY(-1px);
  color: #fff;
}

.btn--outline {
  background: transparent;
  color: var(--blue);
  border: 1px solid var(--border-glow);
}

.btn--outline:hover {
  background: var(--blue-dim);
  color: var(--cyan);
  border-color: var(--cyan);
}

.btn-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}

/* ---------- Hero (shared) ---------- */
.hero {
  position: relative;
  padding: 120px 24px 100px;
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-hero);
  pointer-events: none;
}

.hero__eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 24px;
  padding: 6px 16px;
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: 100px;
}

.hero__title {
  max-width: 860px;
  margin: 0 auto 24px;
}

.hero__sub {
  max-width: 620px;
  margin: 0 auto 48px;
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---------- Section Headers ---------- */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header__eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 16px;
}

.section-header p {
  max-width: 580px;
  margin: 16px auto 0;
  font-size: 1.05rem;
}

/* ---------- Cards ---------- */
.card {
  background: var(--grad-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.card:hover {
  border-color: var(--border-glow);
  box-shadow: 0 0 24px rgba(59, 158, 255, 0.08);
}

.card__icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--blue-dim);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.2rem;
}

.card h3, .card h4 {
  color: var(--text-primary);
  margin-bottom: 10px;
}

.card p {
  font-size: 0.95rem;
  line-height: 1.65;
}

/* ---------- Grid layouts ---------- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

/* ---------- Divider ---------- */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-glow), transparent);
  margin: 0;
  border: none;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--black);
  border-top: 1px solid var(--border);
  padding: 48px 24px;
  text-align: center;
}

.footer__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.footer__brand {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.footer__brand span {
  background: var(--grad-heading);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer__links {
  display: flex;
  gap: 28px;
  list-style: none;
}

.footer__links a {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.footer__links a:hover {
  color: var(--text-secondary);
}

.footer__copy {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ============================================================
   HOME PAGE
   ============================================================ */

/* Mission strip */
.mission-strip {
  padding: var(--section-pad);
  background: var(--black);
}

.mission-strip__inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.mission-strip__inner h2 {
  margin-bottom: 20px;
}

.mission-strip__inner p {
  font-size: 1.1rem;
  line-height: 1.75;
}

/* Pillars preview */
.pillars {
  padding: var(--section-pad);
}

.pillar-card {
  background: var(--grad-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 36px 32px;
  transition: border-color 0.25s, box-shadow 0.25s;
}

.pillar-card:hover {
  border-color: var(--border-glow);
  box-shadow: 0 0 32px rgba(59, 158, 255, 0.1);
}

.pillar-card__label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 12px;
}

.pillar-card h3 {
  color: var(--text-primary);
  margin-bottom: 12px;
  font-size: 1.25rem;
}

.pillar-card p {
  font-size: 0.95rem;
}

/* CTA banner */
.cta-banner {
  padding: var(--section-pad);
  background: var(--black);
  text-align: center;
}

.cta-banner__box {
  max-width: 680px;
  margin: 0 auto;
  padding: 56px 40px;
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(59,158,255,0.06) 0%, rgba(123,95,255,0.06) 100%);
}

.cta-banner__box h2 {
  margin-bottom: 16px;
}

.cta-banner__box p {
  margin-bottom: 36px;
  font-size: 1.05rem;
}

/* ============================================================
   ABOUT PAGE
   ============================================================ */

.team-section {
  padding: var(--section-pad);
}

.team-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.team-card {
  background: var(--grad-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.team-card:hover {
  border-color: var(--border-glow);
  box-shadow: 0 0 32px rgba(59, 158, 255, 0.08);
}

.team-card__photo {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.team-card__body {
  padding: 32px;
}

.team-card__name {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.team-card__role {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--cyan);
  text-transform: uppercase;
  margin-bottom: 20px;
}

.team-card__bio {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--text-secondary);
}

.team-card__bio p + p {
  margin-top: 14px;
}

.team-card__links {
  display: flex;
  gap: 16px;
  margin-top: 24px;
}

.team-card__link {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--blue);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s;
}

.team-card__link:hover {
  color: var(--cyan);
}

/* About values strip */
.about-values {
  padding: var(--section-pad);
  background: var(--black);
}

/* ============================================================
   COGNOS PAGE
   ============================================================ */

.cognos-hero {
  padding: 100px 24px 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: var(--black);
}

.cognos-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 60% at 50% 0%, rgba(59,158,255,0.2) 0%, transparent 65%),
              radial-gradient(ellipse 50% 40% at 85% 40%, rgba(123,95,255,0.14) 0%, transparent 55%);
  pointer-events: none;
}

.cognos-hero__logo {
  width: 96px;
  height: 96px;
  object-fit: contain;
  margin: 0 auto 32px;
  filter: drop-shadow(0 0 20px rgba(59, 158, 255, 0.4));
}

.cognos-hero__badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 20px;
  padding: 6px 16px;
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: 100px;
}

.cognos-hero h1 {
  max-width: 800px;
  margin: 0 auto 20px;
}

.cognos-hero__sub {
  max-width: 600px;
  margin: 0 auto 48px;
  font-size: 1.15rem;
  color: var(--text-secondary);
}

/* What CognOS Is */
.cognos-overview {
  padding: var(--section-pad);
}

.cognos-overview__inner {
  max-width: 840px;
  margin: 0 auto;
  text-align: center;
}

.cognos-overview__inner h2 {
  margin-bottom: 24px;
}

.cognos-overview__inner p {
  font-size: 1.05rem;
  line-height: 1.8;
}

.cognos-overview__inner p + p {
  margin-top: 16px;
}

/* Three Pillars */
.pillars-section {
  padding: var(--section-pad);
  background: var(--black);
}

.pillar-item {
  background: var(--grad-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 36px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.pillar-item:hover {
  border-color: var(--border-glow);
  box-shadow: 0 0 28px rgba(59,158,255,0.1);
}

.pillar-item__tag {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--violet);
  margin-bottom: 12px;
}

.pillar-item h3 {
  color: var(--text-primary);
  margin-bottom: 14px;
  font-size: 1.25rem;
}

.pillar-item p {
  font-size: 0.95rem;
  line-height: 1.7;
}

.pillar-item ul {
  margin-top: 16px;
  padding-left: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pillar-item ul li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding-left: 16px;
  position: relative;
}

.pillar-item ul li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--cyan);
  font-weight: 700;
}

/* Cognitive Loop */
.cognitive-loop {
  padding: var(--section-pad);
}

.loop-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
  max-width: 960px;
  margin: 0 auto;
}

.loop-steps::before {
  content: '';
  position: absolute;
  top: 52px;
  left: calc(12.5% + 20px);
  right: calc(12.5% + 20px);
  height: 1px;
  background: linear-gradient(90deg, var(--blue), var(--violet));
  z-index: 0;
}

.loop-step {
  text-align: center;
  padding: 0 16px;
  position: relative;
  z-index: 1;
}

.loop-step__num {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue) 0%, var(--violet) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
  box-shadow: 0 0 20px rgba(59,158,255,0.3);
}

.loop-step__verb {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.loop-step p {
  font-size: 0.875rem;
  line-height: 1.6;
}

/* Capabilities */
.capabilities {
  padding: var(--section-pad);
  background: var(--black);
}

.capability-card {
  background: var(--grad-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: border-color 0.2s;
}

.capability-card:hover {
  border-color: var(--border-glow);
}

.capability-card__icon {
  font-size: 1.5rem;
  margin-bottom: 14px;
}

.capability-card h4 {
  color: var(--text-primary);
  margin-bottom: 10px;
}

.capability-card p {
  font-size: 0.9rem;
  line-height: 1.65;
}

/* Workloads */
.workloads {
  padding: var(--section-pad);
}

.workload-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.workload-item {
  background: var(--grad-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: border-color 0.2s;
}

.workload-item:hover {
  border-color: var(--border-glow);
}

.workload-item__domain {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--violet);
  margin-bottom: 8px;
}

.workload-item h4 {
  color: var(--text-primary);
  margin-bottom: 8px;
  font-size: 1rem;
}

.workload-item p {
  font-size: 0.875rem;
  line-height: 1.6;
}

/* ============================================================
   CONTACT PAGE
   ============================================================ */

.contact-section {
  padding: var(--section-pad);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  max-width: 860px;
  margin: 0 auto 64px;
}

.contact-card {
  background: var(--grad-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 36px;
  transition: border-color 0.2s;
}

.contact-card:hover {
  border-color: var(--border-glow);
}

.contact-card__name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.contact-card__role {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 24px;
}

.contact-card__links {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

.contact-link:hover {
  color: var(--cyan);
}

.contact-link__icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--blue-dim);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  flex-shrink: 0;
}

/* Learn More box */
.learn-more {
  max-width: 680px;
  margin: 0 auto;
  padding: 52px 44px;
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(59,158,255,0.07) 0%, rgba(123,95,255,0.07) 100%);
  text-align: center;
}

.learn-more h2 {
  margin-bottom: 16px;
  font-size: 1.6rem;
}

.learn-more p {
  margin-bottom: 32px;
  font-size: 1rem;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 900px) {
  .grid-3,
  .grid-4,
  .loop-steps,
  .workload-grid,
  .team-grid {
    grid-template-columns: 1fr 1fr;
  }

  .loop-steps::before {
    display: none;
  }

  .loop-step {
    padding: 0 8px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  :root {
    --section-pad: var(--section-pad-sm);
  }

  .nav__links {
    gap: 20px;
  }

  .nav__links a {
    font-size: 0.82rem;
  }

  .hero {
    padding: 80px 20px 64px;
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .loop-steps,
  .workload-grid,
  .team-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .loop-steps::before {
    display: none;
  }

  .btn-group {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    justify-content: center;
  }

  .cta-banner__box {
    padding: 36px 24px;
  }

  .learn-more {
    padding: 36px 24px;
  }

  .team-card__photo {
    aspect-ratio: 3 / 2;
  }

  .footer__links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
  }
}