/* ============================================
   VUELO GROUP — Global Stylesheet
   Clean, modern, minimal design system
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Brand Colors */
  --dark-charcoal: #1a1a2e;
  --medium-gray: #3d3d5c;
  --accent-orange: #e8731a;
  --accent-orange-hover: #d4650f;
  --accent-teal: #0d9488;
  --accent-teal-hover: #0b7e73;
  --accent-blue: #2563eb;
  --accent-blue-hover: #1d4ed8;

  /* Neutrals */
  --white: #ffffff;
  --light-gray: #f5f5f7;
  --soft-gray: #e5e5ea;
  --border-gray: #d1d1d6;
  --text-dark: #1a1a2e;
  --text-medium: #555566;
  --text-light: #8e8e9a;

  /* Typography */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --section-padding: 80px 0;
  --container-width: 1140px;
  --container-padding: 0 24px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-med: 0.3s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-main);
  color: var(--text-dark);
  background: var(--white);
  line-height: 1.6;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

/* --- Container --- */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--container-padding);
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-dark);
}

h1 { font-size: 3rem; letter-spacing: -0.02em; }
h2 { font-size: 2.25rem; letter-spacing: -0.01em; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.125rem; }

p {
  color: var(--text-medium);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.section-label {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-orange);
  margin-bottom: 1rem;
  display: block;
}

.section-title {
  margin-bottom: 1rem;
}

.text-center h2 {
  margin-bottom: 2.5rem;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-medium);
  max-width: 600px;
}

.section-subtitle.centered {
  margin: 0 auto;
  text-align: center;
}

/* --- Sections --- */
section {
  padding: var(--section-padding);
}

section.light-bg {
  background: var(--light-gray);
}

section.dark-bg {
  background: var(--dark-charcoal);
  color: var(--white);
}

section.dark-bg h2,
section.dark-bg h3,
section.dark-bg h4 {
  color: var(--white);
}

section.dark-bg p {
  color: rgba(255, 255, 255, 0.7);
}

.text-center {
  text-align: center;
}

/* --- Accent Bar (underline) --- */
.accent-bar {
  width: 48px;
  height: 3px;
  background: var(--accent-orange);
  border-radius: 2px;
  margin-top: 12px;
  margin-bottom: 24px;
}

.accent-bar.teal { background: var(--accent-teal); }
.accent-bar.blue { background: var(--accent-blue); }
.accent-bar.centered { margin-left: auto; margin-right: auto; }

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(26, 26, 46, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: background var(--transition-med);
}

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

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

.nav-logo img {
  height: 44px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 0.8125rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.7);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--white);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-orange);
  border-radius: 1px;
}

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 1px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.btn-primary {
  background: var(--accent-orange);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--accent-orange-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(232, 115, 26, 0.3);
}

.btn-teal {
  background: var(--accent-teal);
  color: var(--white);
}

.btn-teal:hover {
  background: var(--accent-teal-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(13, 148, 136, 0.3);
}

.btn-blue {
  background: var(--accent-blue);
  color: var(--white);
}

.btn-blue:hover {
  background: var(--accent-blue-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
  border-color: var(--white);
  background: rgba(255, 255, 255, 0.08);
}

.btn-ghost {
  background: transparent;
  color: var(--accent-orange);
  padding: 8px 0;
  border-radius: 0;
}

.btn-ghost:hover {
  color: var(--accent-orange-hover);
}

.btn-ghost .arrow {
  transition: transform var(--transition-fast);
}

.btn-ghost:hover .arrow {
  transform: translateX(4px);
}

/* ============================================
   HERO SECTIONS
   ============================================ */
.hero {
  padding: 140px 0 100px;
  position: relative;
  overflow: hidden;
}

.hero.hero-main {
  background: var(--dark-charcoal);
  min-height: 85vh;
  display: flex;
  align-items: center;
}

.hero.hero-main::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(232, 115, 26, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(37, 99, 235, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 60% 80%, rgba(13, 148, 136, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 680px;
}

.hero h1 {
  color: var(--white);
  margin-bottom: 24px;
  font-size: 3.25rem;
  line-height: 1.15;
}

.hero h1 .highlight {
  color: var(--accent-orange);
}

.hero p.hero-lead {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 560px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Sub-page hero - split variant with image */
.hero-split {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}

.hero-split-text {
  flex: 1;
  min-width: 0;
}

.hero-split-graphic {
  flex: 0 0 320px;
  max-width: 320px;
}

.hero-split-graphic img {
  width: 100%;
  height: auto;
}

/* Sub-page hero */
.hero-sub {
  padding: 140px 0 72px;
}

.hero-sub.orange-tint { background: #fef7f0; }
.hero-sub.teal-tint { background: #f0fdf9; }
.hero-sub.blue-tint { background: #eff4ff; }
.hero-sub.gray-tint { background: var(--light-gray); }

.hero-sub .section-label {
  margin-bottom: 24px;
}

.hero-sub h1 {
  font-size: 2.5rem;
  color: var(--text-dark);
  margin-bottom: 24px;
}

.hero-sub p {
  font-size: 1.15rem;
  line-height: 1.7;
  max-width: 640px;
}

/* ============================================
   CARDS
   ============================================ */
.text-center .section-label {
  margin-bottom: 1.25rem;
}

.card-grid {
  display: grid;
  gap: 24px;
  margin-top: 1rem;
}

.card-grid.cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

.card-grid.cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

.card-grid.cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.card {
  background: var(--white);
  border: 1px solid var(--border-gray);
  border-radius: 12px;
  padding: 32px;
  transition: all var(--transition-med);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent-orange);
  transform: scaleX(0);
  transition: transform var(--transition-med);
  transform-origin: left;
}

.card:hover {
  border-color: var(--soft-gray);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

.card:hover::before {
  transform: scaleX(1);
}

/* Card color variants */
.card.teal-accent::before { background: var(--accent-teal); }
.card.blue-accent::before { background: var(--accent-blue); }

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.25rem;
}

.card-icon.orange { background: rgba(232, 115, 26, 0.1); color: var(--accent-orange); }
.card-icon.teal { background: rgba(13, 148, 136, 0.1); color: var(--accent-teal); }
.card-icon.blue { background: rgba(37, 99, 235, 0.1); color: var(--accent-blue); }

.card h3 {
  font-size: 1.25rem;
  margin-bottom: 4px;
}

.card h4 {
  font-size: 1rem;
  margin-bottom: 12px;
}

.card .card-subtitle {
  font-size: 0.875rem;
  color: var(--accent-orange);
  font-weight: 500;
  margin-bottom: 12px;
}

.card .card-subtitle.teal { color: var(--accent-teal); }
.card .card-subtitle.blue { color: var(--accent-blue); }

.card p {
  font-size: 0.9375rem;
  color: var(--text-medium);
  margin-bottom: 16px;
}

.card .card-link {
  font-size: 0.875rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.card .card-link.orange { color: var(--accent-orange); }
.card .card-link.teal { color: var(--accent-teal); }
.card .card-link.blue { color: var(--accent-blue); }

.card .card-link .arrow {
  transition: transform var(--transition-fast);
}

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

/* ============================================
   PROCESS / STEPS
   ============================================ */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 14%;
  right: 14%;
  height: 2px;
  background: var(--soft-gray);
}

.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent-orange);
  color: var(--white);
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  box-shadow: 0 4px 12px rgba(232, 115, 26, 0.25);
}

.process-step h4 {
  margin-bottom: 8px;
}

.process-step p {
  font-size: 0.875rem;
  color: var(--text-light);
}

/* ============================================
   QUOTE SECTION
   ============================================ */
.quote-section {
  background: var(--dark-charcoal);
  padding: 64px 0;
}

.quote-section blockquote {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--white);
  text-align: center;
  line-height: 1.5;
  max-width: 700px;
  margin: 0 auto 12px;
}

.quote-section .quote-attr {
  text-align: center;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-orange);
  font-weight: 600;
}

/* ============================================
   SPLIT LAYOUT (Problem / Solution, etc.)
   ============================================ */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.split-wide {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 64px;
  align-items: start;
}

/* ============================================
   TEAM / LEADERSHIP
   ============================================ */
.team-cards {
  display: flex;
  flex-direction: column;
  gap: 32px;
  max-width: 800px;
  margin: 0 auto;
}

.team-card {
  display: flex;
  gap: 32px;
  align-items: flex-start;
  padding: 32px;
  border: 1px solid var(--border-gray);
  border-radius: 12px;
  background: var(--white);
  transition: box-shadow var(--transition-med);
}

.team-card:hover {
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
}

.team-card-photo {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
}

.team-card-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-card-photo.placeholder-photo {
  background: var(--soft-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--text-light);
}

.team-card-info h3 {
  font-size: 1.25rem;
  margin-bottom: 2px;
}

.team-card-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent-orange) !important;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px !important;
}

.team-card-bio-preview {
  font-size: 0.9375rem;
  color: var(--text-medium);
  margin-bottom: 0 !important;
  line-height: 1.7;
}

.team-card-bio-full {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, opacity 0.3s ease;
  opacity: 0;
}

.team-card-bio-full.open {
  max-height: 600px;
  opacity: 1;
  margin-top: 8px;
}

.team-card-bio-full p {
  font-size: 0.9375rem;
  color: var(--text-medium);
  line-height: 1.7;
}

.team-card-link {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent-blue) !important;
  margin-top: 4px;
}

.team-card-link:hover {
  text-decoration: underline;
}

.team-card-toggle {
  background: none;
  border: none;
  padding: 0;
  margin-top: 8px;
  font-family: var(--font-main);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent-orange);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.team-card-toggle:hover {
  color: var(--accent-orange-hover);
}

.team-card-placeholder {
  opacity: 0.5;
  border-style: dashed;
}

/* Legacy team styles */
.team-member {
  display: flex;
  gap: 32px;
  align-items: flex-start;
}

.team-photo {
  width: 100px;
  height: 100px;
  border-radius: 12px;
  background: var(--soft-gray);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: var(--text-light);
}

.team-info h3 {
  margin-bottom: 8px;
}

/* ============================================
   CTA BANNER
   ============================================ */
.cta-banner {
  background: var(--light-gray);
  border-radius: 16px;
  padding: 48px;
  text-align: center;
}

.cta-banner h3 {
  margin-bottom: 8px;
}

.cta-banner p {
  margin-bottom: 24px;
}

.cta-banner .cta-pills {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================
   CONTACT FORM
   ============================================ */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-dark);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border-gray);
  border-radius: 8px;
  font-family: var(--font-main);
  font-size: 0.9375rem;
  color: var(--text-dark);
  background: var(--white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent-orange);
  box-shadow: 0 0 0 3px rgba(232, 115, 26, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

.contact-details {
  padding: 32px;
  background: var(--light-gray);
  border-radius: 12px;
}

.contact-details h3 {
  margin-bottom: 24px;
}

.contact-item {
  margin-bottom: 20px;
}

.contact-item .contact-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-light);
  margin-bottom: 4px;
}

.contact-item .contact-value {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-dark);
}

.contact-item .contact-value a {
  color: var(--accent-orange);
}

.contact-item .contact-value a:hover {
  text-decoration: underline;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--dark-charcoal);
  padding: 48px 0 32px;
  color: rgba(255, 255, 255, 0.5);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

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

.footer-logo img {
  height: 40px;
  width: auto;
}

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer-links a {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.8125rem;
  text-align: center;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  h1 { font-size: 2.5rem; }
  h2 { font-size: 2rem; }

  .card-grid.cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  :root {
    --section-padding: 56px 0;
  }

  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }

  .hero { padding: 110px 0 64px; }
  .hero.hero-main { min-height: auto; }
  .hero h1 { font-size: 2.25rem; }

  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--dark-charcoal);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .card-grid.cols-3,
  .card-grid.cols-2 {
    grid-template-columns: 1fr;
  }

  .card-grid.cols-4 {
    grid-template-columns: 1fr;
  }

  .process-steps {
    grid-template-columns: 1fr 1fr;
  }

  .split,
  .split-wide {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-split {
    flex-direction: column;
    text-align: center;
  }

  .hero-split-graphic {
    flex: 0 0 auto;
    max-width: 240px;
    margin: 0 auto;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: flex-start;
  }

  .cta-banner {
    padding: 32px 24px;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .team-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .team-member {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }

  .demo-showcase {
    padding: 56px 0;
  }

  .demo-showcase h2 {
    font-size: 1.75rem;
  }

  .demo-showcase .demo-description {
    font-size: 1rem;
  }

  .demo-image-wrapper {
    border-radius: 12px;
  }

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

@media (max-width: 480px) {
  .process-steps {
    grid-template-columns: 1fr;
  }

  .hero h1 { font-size: 1.875rem; }
}

/* ============================================
   DEMO SHOWCASE
   ============================================ */
.demo-showcase {
  background: var(--white);
  padding: 80px 0;
}

.demo-showcase .section-label {
  margin-bottom: 1rem;
}

.demo-showcase h2 {
  margin-bottom: 24px;
  color: var(--text-dark);
}

.demo-showcase .demo-description {
  font-size: 1.0625rem;
  color: var(--text-medium);
  max-width: 680px;
  margin: 0 auto 48px;
  line-height: 1.7;
  text-align: center;
}

.demo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 1060px;
  margin: 0 auto;
}

.demo-grid-item {
  display: flex;
  flex-direction: column;
}

.demo-stack {
  display: flex;
  flex-direction: column;
  gap: 56px;
  max-width: 900px;
  margin: 0 auto;
}

.demo-stack-item .demo-caption {
  margin-bottom: 16px;
  margin-top: 0;
}

.demo-image-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 24px;
}

.demo-image-wrapper {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  box-shadow:
    0 20px 48px rgba(0, 0, 0, 0.08),
    0 4px 12px rgba(0, 0, 0, 0.06),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(0, 0, 0, 0.04);
  background: var(--white);
}

.demo-image-wrapper img {
  display: block;
  width: 100%;
  height: auto;
}

/* Crossfade carousel for stacked images */
.demo-crossfade {
  position: relative;
  aspect-ratio: auto;
}

.demo-crossfade .crossfade-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.demo-crossfade .crossfade-a {
  animation: crossfadeA 8s ease-in-out infinite;
}

.demo-crossfade .crossfade-b {
  animation: crossfadeB 8s ease-in-out infinite;
}

@keyframes crossfadeA {
  0%, 42%   { opacity: 1; }
  50%, 92%  { opacity: 0; }
  100%      { opacity: 1; }
}

@keyframes crossfadeB {
  0%, 42%   { opacity: 0; }
  50%, 92%  { opacity: 1; }
  100%      { opacity: 0; }
}

.demo-caption {
  text-align: center;
  margin-top: 16px;
  font-size: 0.9375rem;
  color: var(--accent-orange);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mt-5 { margin-top: 48px; }
.mt-6 { margin-top: 64px; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.mb-5 { margin-bottom: 48px; }