/* =============================================================================
   AMATIX site3 — Swiss Infrastructure Engineering
   Mobile-first CSS. Sections in order:
   1. Design tokens / CSS custom properties
   2. Reset & base
   3. Typography
   4. Layout utilities
   5. Header & navigation
   6. Hero section
   7. Services section (homepage)
   8. Engagement models (homepage)
   9. Proof points / stats
   10. CTA sections
   11. About page
   12. Contact page
   13. Legal pages
   14. Footer
   15. 404 page
   16. Animations
   17. Responsive — tablet (min-width: 600px)
   18. Responsive — desktop (min-width: 1024px)
   ========================================================================== */

/* =============================================================================
   1. DESIGN TOKENS
   ========================================================================== */
:root {
  /* Brand colours */
  --color-primary:       #6D4AFF;
  --color-primary-dark:  #5c3fe3;
  --color-primary-light: #F0EDFF;
  --color-primary-glow:  rgba(109, 74, 255, 0.18);

  /* Neutral palette */
  --color-dark:       #111827;
  --color-dark-soft:  #1e293b;
  --color-body:       #374151;
  --color-muted:      #6b7280;
  --color-bg:         #fafafa;
  --color-bg-alt:     #f5f3ff;
  --color-white:      #ffffff;
  --color-border:     #e5e7eb;

  /* Typography */
  --font-sans: 'Geist Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'Geist Mono', 'Courier New', monospace;

  /* Spacing scale */
  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2rem;
  --space-xl:  3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  /* Layout */
  --max-width: 1140px;
  --radius:    8px;
  --radius-lg: 16px;

  /* Header */
  --header-h: 68px;

  /* Transitions */
  --trans-fast:   0.15s ease;
  --trans-normal: 0.25s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  line-height: 1.6;
  color: var(--color-body);
  background: var(--color-bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul, ol { list-style: none; }

/* =============================================================================
   3. TYPOGRAPHY
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 700;
  color: var(--color-dark);
  line-height: 1.2;
}

h1 { font-size: clamp(2.25rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); margin-bottom: var(--space-md); }
h3 { font-size: 1.2rem; margin-bottom: var(--space-xs); }

p { margin-bottom: var(--space-sm); }
p:last-child { margin-bottom: 0; }

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--trans-fast);
}
a:hover { color: var(--color-primary-dark); }

/* Focus-visible styles for all interactive elements */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* =============================================================================
   4. LAYOUT UTILITIES
   ========================================================================== */
.container {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-lg);
}

.section { padding-block: var(--space-2xl); }

.section-title {
  text-align: center;
  margin-bottom: var(--space-xs);
}

.section-intro-text {
  text-align: center;
  color: var(--color-muted);
  margin-bottom: var(--space-xl);
  font-size: 1.05rem;
}

.eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

/* Skip nav */
.skip-nav {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  z-index: 9999;
  padding: 0.5rem 1rem;
  background: var(--color-primary);
  color: white;
  border-radius: 0 0 var(--radius) var(--radius);
  font-weight: 600;
  transition: top var(--trans-fast);
}
.skip-nav:focus {
  top: 0;
  outline: 2px solid white;
  outline-offset: 2px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 1rem;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--trans-normal);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--color-primary-glow);
}

.btn-outline {
  background: transparent;
  color: var(--color-dark);
  border-color: var(--color-dark);
}
.btn-outline:hover {
  background: var(--color-dark);
  color: white;
  transform: translateY(-1px);
}

.btn-sm { padding: 0.45rem 1rem; font-size: 0.875rem; }
.btn-lg { padding: 0.875rem 1.75rem; font-size: 1.05rem; }

/* =============================================================================
   5. HEADER & NAVIGATION
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  height: var(--header-h);
  background: rgba(250, 250, 250, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding-inline: var(--space-lg);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  color: var(--color-primary);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 0.06em;
  flex-shrink: 0;
  text-transform: uppercase;
}
.logo:hover { color: var(--color-primary-dark); }
.logo-icon {
  width: 36px;
  height: 36px;
  display: block;
  flex-shrink: 0;
  object-fit: contain;
}

/* Nav */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-link {
  position: relative;
  color: var(--color-body);
  font-weight: 500;
  font-size: 0.95rem;
  padding-bottom: 2px;
}
/* Underline animation */
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
  transition: width var(--trans-normal);
}
.nav-link:hover::after,
.nav-link.active::after { width: 100%; }
.nav-link:hover,
.nav-link.active { color: var(--color-primary); }

.nav-cta { margin-left: var(--space-sm); }

/* Hamburger / mobile nav toggle (CSS checkbox hack) */
.nav-toggle-input {
  display: none;
}

.nav-toggle-label {
  display: none; /* shown at mobile */
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  cursor: pointer;
  z-index: 210;
}
.hamburger-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: transform var(--trans-normal), opacity var(--trans-normal);
}

/* =============================================================================
   6. HERO SECTION
   ========================================================================== */
.hero {
  position: relative;
  min-height: calc(100svh - var(--header-h));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-block: var(--space-3xl);
  overflow: hidden;
  text-align: center;
}

/* Background: animated gradient + grid */
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(17, 24, 39, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(17, 24, 39, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

.hero-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse 60% 55% at 50% 45%,
    rgba(109, 74, 255, 0.1) 0%,
    transparent 70%
  );
  animation: glow-pulse 6s ease-in-out infinite;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 860px;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.hero-title {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 700;
  color: var(--color-dark);
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: var(--space-md);
}

/* Each word on its own visual beat */
.hero-title span {
  display: inline-block;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-body);
  max-width: 580px;
  margin-inline: auto;
  margin-bottom: var(--space-xl);
  line-height: 1.65;
}

.hero-cta {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 0;
}

/* Ticker / marquee */
.ticker-wrap {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  overflow: hidden;
  background: var(--color-primary-light);
  border-top: 1px solid rgba(109, 74, 255, 0.15);
  padding-block: 0.6rem;
  z-index: 1;
}

.ticker-track {
  display: flex;
  gap: var(--space-lg);
  white-space: nowrap;
  animation: ticker-scroll 20s linear infinite;
}

.ticker-item {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-dark);
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

.ticker-logo {
  display: flex;
  align-items: center;
}

.ticker-logo img {
  height: 18px;
  width: auto;
  display: block;
}

.ticker-stat {
  font-family: var(--font-mono);
  color: var(--color-primary);
}

.ticker-sep {
  color: var(--color-primary);
  flex-shrink: 0;
  opacity: 0.5;
}

/* =============================================================================
   7. SERVICES SECTION (homepage)
   ========================================================================== */
.section-services {
  background: var(--color-white);
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.service-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: var(--space-xl);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: all var(--trans-normal);
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--color-primary), #a78fff);
  opacity: 0;
  transition: opacity var(--trans-normal);
}

.service-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 8px 24px var(--color-primary-glow);
  transform: translateY(-2px);
}

.service-card:hover::before {
  opacity: 1;
}

.service-card-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--color-primary);
  opacity: 0.7;
  margin-bottom: var(--space-xs);
  letter-spacing: 0.05em;
}

.service-card h3 {
  color: var(--color-dark);
  font-size: 1.1rem;
  margin-bottom: var(--space-xs);
}

.service-desc {
  font-size: 0.92rem;
  color: var(--color-body);
  flex: 1;
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-bottom: var(--space-sm);
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.2rem 0.55rem;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  border-radius: 4px;
  letter-spacing: 0.01em;
}

.service-arrow {
  align-self: flex-end;
  color: var(--color-primary);
  font-size: 1.2rem;
  transition: transform var(--trans-fast);
}

.service-card:hover .service-arrow {
  transform: translateX(4px);
}

/* =============================================================================
   8. ENGAGEMENT MODELS (homepage)
   ========================================================================== */
.section-engagement {
  background: var(--color-bg-alt);
}

.engagement-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.engagement-card {
  padding: var(--space-lg);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-align: center;
  transition: all var(--trans-normal);
}

.engagement-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 16px rgba(109, 74, 255, 0.08);
}

.engagement-duration {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.engagement-card h3 { font-size: 1.1rem; }
.engagement-card p {
  font-size: 0.9rem;
  color: var(--color-body);
  margin: 0;
}

/* =============================================================================
   9. PROOF POINTS / STATS
   ========================================================================== */
.section-proof {
  background: var(--color-white);
  text-align: center;
}

.section-proof h2 {
  margin-bottom: var(--space-xl);
}

.proof-clients {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
}

.proof-client {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-dark);
  padding: 0.6rem var(--space-md);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius);
  letter-spacing: 0.01em;
}

.proof-client-logo {
  height: 36px;
  width: auto;
}

.proof-stat {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.proof-desc {
  color: var(--color-body);
  max-width: 560px;
  margin-inline: auto;
  font-size: 0.95rem;
}


/* =============================================================================
   10. CTA SECTIONS
   ========================================================================== */
.section-cta {
  background: var(--color-dark);
  color: var(--color-white);
  text-align: center;
}

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

.section-cta p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-lg);
  max-width: 520px;
  margin-inline: auto;
  font-size: 1.05rem;
}

.section-cta .btn-primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
}
.section-cta .btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

.section-cta-compact {
  padding-block: var(--space-xl);
}
.section-cta-compact h2 {
  font-size: clamp(1.3rem, 2.5vw, 1.75rem);
  margin-bottom: var(--space-lg);
}

/* =============================================================================
   11. ABOUT PAGE
   ========================================================================== */
.section-stats {
  background: var(--color-bg-alt);
  text-align: center;
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  text-align: center;
}

.stat-item {
  padding: var(--space-lg) var(--space-md);
}

.stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
  white-space: nowrap;
}

.stat-label {
  font-size: 0.95rem;
  color: var(--color-body);
}

.about-tagline {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--color-primary);
  margin-top: var(--space-2xl);
  letter-spacing: 0.02em;
  font-weight: 600;
}

.page-hero {
  padding-block: var(--space-2xl);
  text-align: center;
  background: var(--color-bg-alt);
}

.page-hero-services {
  position: relative;
  padding-block: 4rem;
  overflow: hidden;
}

.hero-pattern {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(109, 74, 255, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(109, 74, 255, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

.page-desc {
  font-size: 1.1rem;
  color: var(--color-body);
  max-width: 560px;
  margin-inline: auto;
  margin-top: var(--space-sm);
}

.section-about {
  background: var(--color-white);
  text-align: center;
}

.about-intro {
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: var(--space-xl);
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--color-body);
}

.section-about .about-quote {
  text-align: left;
}

.section-values {
  background: var(--color-bg-alt);
}

.value-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.value-card {
  padding: var(--space-xl);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius);
}

.value-card h3 {
  color: var(--color-primary);
  font-size: 1.15rem;
  margin-bottom: var(--space-xs);
}

.section-why {
  background: var(--color-white);
}

.about-quote {
  max-width: 720px;
  margin-inline: auto;
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 500;
  line-height: 1.65;
  color: var(--color-dark);
  border: none;
  padding: 0 0 0 var(--space-lg);
  border-left: 4px solid var(--color-primary);
  font-style: italic;
}

/* =============================================================================
   12. CONTACT PAGE
   ========================================================================== */
.page-hero-contact { padding-block: 3rem; }

.contact-headline {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--color-dark);
  margin-top: var(--space-sm);
  line-height: 1.2;
}

.contact-intro {
  margin-top: var(--space-sm);
  font-size: 1.05rem;
  color: var(--color-body);
}

.page-contact {
  padding-block: var(--space-2xl);
}

.contact-card {
  max-width: 420px;
  margin-inline: auto;
  text-align: center;
  padding: var(--space-2xl);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
}

.contact-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-muted);
  margin-bottom: 0.5rem;
}

.btn-contact {
  display: inline-flex;
  margin-bottom: var(--space-lg);
  font-size: 0.95rem;
  word-break: break-all;
}

.contact-phone {
  display: block;
  font-size: 1.15rem;
  color: var(--color-dark);
  font-weight: 600;
  margin-bottom: var(--space-lg);
  text-decoration: none;
}

.contact-phone:hover {
  color: var(--color-primary);
}

.contact-hours {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin: 0;
  font-family: var(--font-mono);
}

/* =============================================================================
   13. LEGAL PAGES
   ========================================================================== */
.page-legal {
  padding-block: var(--space-2xl);
}

.page-content {
  max-width: 680px;
  margin-inline: auto;
}

.page-content h1 {
  margin-bottom: var(--space-xl);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

.page-content h2 {
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
  font-size: 1.3rem;
}

.page-content h3 {
  margin-top: var(--space-lg);
  margin-bottom: var(--space-xs);
  color: var(--color-dark);
}

.page-content p {
  color: var(--color-body);
  line-height: 1.75;
}

.page-content ul {
  margin-block: var(--space-md);
  padding-left: var(--space-lg);
  list-style: disc;
}

.page-content li {
  margin-bottom: 0.5rem;
  color: var(--color-body);
  line-height: 1.65;
}

.page-content strong { color: var(--color-dark); }

.page-content a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* =============================================================================
   Services detail page
   ========================================================================== */
.section-services-detail {
  padding-block: var(--space-2xl);
}

.section-header {
  text-align: center;
  max-width: 560px;
  margin-inline: auto;
  margin-bottom: var(--space-2xl);
}

.section-header h2 { margin-bottom: var(--space-sm); }
.section-intro { color: var(--color-body); }

.services-bento {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.service-card-detail {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--trans-normal);
  animation: fadeUp 0.5s ease backwards;
}

.service-card-detail:nth-child(1) { animation-delay: 0.05s; }
.service-card-detail:nth-child(2) { animation-delay: 0.10s; }
.service-card-detail:nth-child(3) { animation-delay: 0.15s; }
.service-card-detail:nth-child(4) { animation-delay: 0.20s; }
.service-card-detail:nth-child(5) { animation-delay: 0.25s; }
.service-card-detail:nth-child(6) { animation-delay: 0.30s; }
.service-card-detail:nth-child(7) { animation-delay: 0.35s; }

.service-card-detail:hover {
  border-color: var(--color-primary);
  box-shadow: 0 12px 32px var(--color-primary-glow);
}

.service-card-body {
  position: relative;
  padding: var(--space-xl);
}

.service-accent {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--color-primary), #a78fff);
}

.service-card-detail header {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: var(--space-md);
}

.service-num {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--color-primary);
  opacity: 0.65;
}

.service-card-detail header h3 { margin: 0; }
.service-card-detail h3 { font-size: 1.15rem; }
.service-card-detail.featured h3 { font-size: 1.35rem; }

.service-card-detail ul {
  margin-block: var(--space-md);
}

.service-card-detail li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.5rem;
  font-size: 0.93rem;
  color: var(--color-body);
  line-height: 1.6;
}

.service-card-detail li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 5px;
  height: 5px;
  background: var(--color-primary);
  border-radius: 50%;
}

.service-card-detail footer {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

/* Engagement detail (services page) */
.section-engagement-detail {
  padding-block: var(--space-2xl);
  background: var(--color-bg-alt);
}

.engagement-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.engagement-card-detail {
  background: var(--color-white);
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: all var(--trans-normal);
}

.engagement-card-detail:hover {
  border-color: var(--color-primary);
  box-shadow: 0 6px 20px rgba(109, 74, 255, 0.08);
}

.engagement-badge {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.engagement-card-detail h3 { font-size: 1.1rem; }
.engagement-card-detail p { font-size: 0.9rem; color: var(--color-body); }

.ideal-for {
  font-size: 0.83rem;
  padding-top: var(--space-sm);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-sm);
  color: var(--color-muted);
}

.ideal-for strong { color: var(--color-dark); }

/* =============================================================================
   14. FOOTER
   ========================================================================== */
.site-footer {
  background: var(--color-dark);
  color: white;
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-lg);
  margin-top: var(--space-2xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.footer-col ul { }
.footer-col li { margin-bottom: 0.5rem; font-size: 0.9rem; }
.footer-hours { color: rgba(255, 255, 255, 0.5); font-size: 0.85rem; }
.footer-col a { color: rgba(255, 255, 255, 0.75); transition: color var(--trans-fast); }
.footer-col a:hover { color: var(--color-primary); }

.footer-bottom {
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom p { margin: 0; }

/* =============================================================================
   15. 404 PAGE
   ========================================================================== */
.page-404 {
  min-height: calc(100svh - var(--header-h) - 200px);
  display: flex;
  align-items: center;
  text-align: center;
  padding-block: var(--space-3xl);
}

.err-code {
  font-family: var(--font-mono);
  font-size: clamp(5rem, 15vw, 10rem);
  font-weight: 700;
  color: var(--color-primary);
  opacity: 0.25;
  line-height: 1;
  margin-bottom: 0;
  letter-spacing: -0.05em;
}

.page-404 h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: var(--space-sm);
}

.err-msg {
  color: var(--color-muted);
  margin-bottom: var(--space-xl);
  font-size: 1.05rem;
}

/* =============================================================================
   16. ANIMATIONS
   ========================================================================== */
@keyframes glow-pulse {
  0%, 100% { opacity: 0.7; transform: scale(1); }
  50%       { opacity: 1;   transform: scale(1.05); }
}

@keyframes ticker-scroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Respect user preference for reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .ticker-track { animation: none; }
  .hero-glow    { animation: none; }
}

/* =============================================================================
   17. RESPONSIVE — TABLET (min-width: 600px)
   ========================================================================== */
@media (min-width: 600px) {
  /* Services homepage */
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Engagement homepage */
  .engagement-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Services bento */
  .services-bento {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Engagement cards (services page) */
  .engagement-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  /* About stats */
  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* About values */
  .value-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Footer grid stays 2-column at tablet */
}

/* =============================================================================
   18. RESPONSIVE — DESKTOP (min-width: 1024px)
   ========================================================================== */
@media (min-width: 1024px) {
  /* Services homepage: 3–4 columns via auto-fill */
  .services-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }

  /* Engagement homepage: 4 columns */
  .engagement-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  /* Services bento: 2 columns */
  .services-bento {
    grid-template-columns: repeat(2, 1fr);
  }
  .service-card-detail.featured {
    grid-column: 1 / -1;
  }

  /* Engagement cards (services page): 4 columns */
  .engagement-cards {
    grid-template-columns: repeat(4, 1fr);
  }

  /* About values: 3 columns */
  .value-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Footer: 4 columns */
  .footer-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Mobile nav at small screens */
@media (max-width: 767px) {
  .nav-toggle-label {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-sm) var(--space-lg);
    transform: translateY(-110%);
    transition: transform var(--trans-normal);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    z-index: 190;
  }

  .nav-link {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
  }
  .nav-link::after { display: none; }

  .nav-cta {
    margin: var(--space-sm) 0 0;
    text-align: center;
  }

  /* Show nav when checkbox is checked */
  .nav-toggle-input:checked ~ .main-nav {
    transform: translateY(0);
  }

  /* Animate hamburger to X */
  .nav-toggle-input:checked ~ .nav-toggle-label .hamburger-bar:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
  }
  .nav-toggle-input:checked ~ .nav-toggle-label .hamburger-bar:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle-input:checked ~ .nav-toggle-label .hamburger-bar:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
  }

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
  .hero-cta .btn {
    width: 100%;
    max-width: 320px;
  }
}

@media (max-width: 479px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .container {
    padding-inline: var(--space-sm);
  }
}