/* CanID corporate site — gray, blue, white, black */
:root {
  --black: #0a0e14;
  --black-soft: #111827;
  --gray-900: #1e293b;
  --gray-700: #334155;
  --gray-500: #64748b;
  --gray-400: #94a3b8;
  --gray-200: #e2e8f0;
  --gray-100: #f1f5f9;
  --white: #ffffff;
  --blue-900: #0c4a6e;
  --blue-700: #0369a1;
  --blue-600: #0284c7;
  --blue-500: #0ea5e9;
  --blue-100: #e0f2fe;
  --font-display: "Outfit", system-ui, sans-serif;
  --font-body: "IBM Plex Sans", system-ui, sans-serif;
  --max-width: 72rem;
  --header-h: 4.5rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--gray-700);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--blue-700);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: color 0.2s var(--ease);
}

a:hover {
  color: var(--blue-500);
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 200;
  padding: 0.75rem 1rem;
  background: var(--blue-600);
  color: var(--white);
  border-radius: 0.25rem;
  text-decoration: none;
  font-weight: 600;
}

.skip-link:focus {
  top: 1rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo-link img {
  height: 2.25rem;
  width: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.site-nav a {
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--gray-700);
  padding: 0.5rem 0.75rem;
  border-radius: 0.375rem;
}

.site-nav a:hover {
  color: var(--blue-600);
  background: var(--gray-100);
}

.nav-cta {
  margin-left: 0.5rem;
  padding: 0.5rem 1rem !important;
  background: var(--black) !important;
  color: var(--white) !important;
}

.nav-cta:hover {
  background: var(--gray-900) !important;
  color: var(--white) !important;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--gray-200);
  border-radius: 0.375rem;
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--gray-900);
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--black);
  color: var(--white);
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(2, 132, 199, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(2, 132, 199, 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 20%, transparent 75%);
}

.hero-glow {
  position: absolute;
  top: -20%;
  right: -10%;
  width: 55%;
  height: 80%;
  background: radial-gradient(circle, rgba(2, 132, 199, 0.25) 0%, transparent 65%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 5rem 1.5rem 6rem;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1.25rem;
  padding: 0.35rem 0.85rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue-500);
  background: rgba(14, 165, 233, 0.12);
  border: 1px solid rgba(14, 165, 233, 0.25);
  border-radius: 999px;
}

.hero-eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue-500);
  box-shadow: 0 0 8px var(--blue-500);
}

.hero h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.03em;
  max-width: 18ch;
}

.hero h1 span {
  color: var(--blue-500);
}

.hero-lead {
  margin: 0 0 2rem;
  max-width: 42rem;
  font-size: 1.2rem;
  line-height: 1.6;
  color: var(--gray-400);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.5rem;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 0.375rem;
  border: none;
  cursor: pointer;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--blue-600);
  color: var(--white);
  box-shadow: 0 4px 24px rgba(2, 132, 199, 0.35);
}

.btn-primary:hover {
  background: var(--blue-500);
  color: var(--white);
}

.btn-ghost {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--white);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 4rem;
  padding-top: 2.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-stat strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: -0.02em;
}

.hero-stat span {
  display: block;
  font-size: 0.875rem;
  color: var(--gray-500);
}

/* Sections */
.section {
  padding: 5rem 1.5rem;
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-label {
  margin: 0 0 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue-600);
}

.section h2 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--black-soft);
  line-height: 1.15;
}

.section-intro {
  margin: 0 0 3rem;
  max-width: 40rem;
  font-size: 1.125rem;
  color: var(--gray-500);
}

/* About */
.section-about {
  background: var(--gray-100);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about-text p {
  margin: 0 0 1.25rem;
}

.about-highlight {
  padding: 2rem;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-left: 4px solid var(--blue-600);
  border-radius: 0.5rem;
}

.about-highlight p {
  margin: 0;
  font-size: 1.125rem;
  color: var(--gray-900);
  font-weight: 500;
}

.about-visual {
  margin: 3rem 0 0;
  padding: 0.75rem;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 0.625rem;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.08);
}

.about-visual img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 0.375rem;
  object-fit: contain;
}

/* Acronym */
.acronym-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.acronym-card {
  padding: 2rem;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 0.5rem;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.acronym-card:hover {
  border-color: var(--blue-600);
  box-shadow: 0 12px 40px rgba(2, 132, 199, 0.08);
}

.acronym-letter {
  display: block;
  margin-bottom: 0.75rem;
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 600;
  line-height: 1;
  color: var(--blue-600);
  letter-spacing: -0.04em;
}

.acronym-card h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--black-soft);
}

.acronym-card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--gray-500);
}

/* Zero Trust */
.section-zero-trust {
  background: var(--black);
  color: var(--gray-200);
}

.section-zero-trust .section-label {
  color: var(--blue-500);
}

.section-zero-trust h2 {
  color: var(--white);
}

.section-zero-trust .section-intro {
  color: var(--gray-400);
}

.zt-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.zt-principles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.zt-principles li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
  padding: 1.25rem 1.5rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 0.5rem;
}

.zt-num {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--blue-500);
}

.zt-principles strong {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--white);
  font-size: 1rem;
}

.zt-principles span {
  font-size: 0.9375rem;
  color: var(--gray-400);
}

.zt-diagram {
  aspect-ratio: 1;
  max-width: 22rem;
  margin: 0 auto;
}

.zt-diagram svg {
  width: 100%;
  height: 100%;
}

/* Pillars */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.pillar-card {
  padding: 2rem;
  background: var(--gray-100);
  border-radius: 0.5rem;
  border: 1px solid transparent;
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease);
}

.pillar-card:hover {
  background: var(--white);
  border-color: var(--gray-200);
}

.pillar-icon {
  width: 2.5rem;
  height: 2.5rem;
  margin-bottom: 1.25rem;
  color: var(--blue-600);
}

.pillar-card h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--black-soft);
}

.pillar-card p {
  margin: 0;
  font-size: 0.9375rem;
}

/* AI section */
.section-ai {
  background: linear-gradient(180deg, var(--blue-100) 0%, var(--white) 55%);
}

.ai-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}

.ai-step {
  text-align: center;
  padding: 1.5rem 1rem;
  position: relative;
}

.ai-step::after {
  content: "";
  position: absolute;
  top: 2.25rem;
  right: -50%;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--blue-600), var(--gray-200));
  z-index: 0;
}

.ai-step:last-child::after {
  display: none;
}

.ai-step-num {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  margin-bottom: 1rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--white);
  background: var(--blue-600);
  border-radius: 50%;
}

.ai-step h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--black-soft);
}

.ai-step p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--gray-500);
}

.ai-flow-spaced {
  margin-top: 3.5rem;
}


/* Contact */
.section-contact {
  padding-bottom: 6rem;
}

.contact-panel {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: center;
  padding: 3rem;
  background: var(--black);
  color: var(--white);
  border-radius: 0.75rem;
}

.contact-panel h2 {
  margin: 0 0 0.75rem;
  color: var(--white);
}

.contact-panel p {
  margin: 0;
  color: var(--gray-400);
  max-width: 32rem;
}

.contact-panel .btn-primary {
  white-space: nowrap;
}

/* Footer */
.site-footer {
  padding: 2rem 1.5rem;
  background: var(--gray-100);
  border-top: 1px solid var(--gray-200);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-inner img {
  height: 1.75rem;
  opacity: 0.85;
}

.footer-copy {
  margin: 0;
  font-size: 0.875rem;
  color: var(--gray-500);
}

.footer-links {
  display: flex;
  gap: 1.25rem;
}

.footer-links a {
  font-size: 0.875rem;
  text-decoration: none;
  color: var(--gray-500);
}

.footer-links a:hover {
  color: var(--blue-600);
}

/* Animations */
@media (prefers-reduced-motion: no-preference) {
  .fade-in {
    opacity: 0;
    transform: translateY(16px);
    animation: fadeUp 0.7s var(--ease) forwards;
  }

  .fade-in-delay-1 { animation-delay: 0.1s; }
  .fade-in-delay-2 { animation-delay: 0.2s; }
  .fade-in-delay-3 { animation-delay: 0.3s; }

  @keyframes fadeUp {
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

/* Responsive */
@media (max-width: 900px) {
  .about-grid,
  .zt-layout,
  .acronym-grid,
  .pillars-grid {
    grid-template-columns: 1fr;
  }

  .ai-flow {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }

  .ai-step::after {
    display: none;
  }

  .hero-stats {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .contact-panel {
    grid-template-columns: 1fr;
    text-align: left;
  }
}

@media (max-width: 640px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem 1.5rem 1.5rem;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 0.75rem;
  }

  .nav-cta {
    margin-left: 0;
    text-align: center;
  }

  .ai-flow {
    grid-template-columns: 1fr;
  }

  .hero-inner {
    padding-top: 3.5rem;
    padding-bottom: 4rem;
  }
}