.hero-demo-card {
  position: relative;
  z-index: 1;
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: linear-gradient(135deg, #0c1424, #1b2540 55%, #1f2f53);
  box-shadow: 0 30px 60px rgba(12, 18, 32, 0.45);
  color: rgba(255, 255, 255, 0.9);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

body.theme-dark .hero-demo-card {
  border-color: rgba(255, 255, 255, 0.08);
  background: linear-gradient(135deg, rgba(10, 16, 28, 0.95), rgba(20, 31, 52, 0.95));
}

.hero-demo-card h3 {
  margin: 0;
  font-size: 1.35rem;
  color: #fff;
}

.hero-demo-card__subtitle {
  margin: 0;
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.95rem;
  line-height: 1.5;
}

.hero-demo-card__media {
  position: relative;
  border-radius: calc(var(--radius-lg) - 4px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.12), transparent),
    linear-gradient(135deg, rgba(32, 201, 151, 0.15), rgba(76, 110, 245, 0.35));
  padding: 32px;
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-demo-card__wave {
  display: grid;
  grid-auto-flow: column;
  gap: 6px;
  width: 100%;
  max-width: 320px;
  align-items: end;
}

.hero-demo-card__wave span {
  width: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.6);
  height: 24px;
  animation: demoWave 1.4s ease-in-out infinite;
}

.hero-demo-card__wave span:nth-child(odd) {
  animation-duration: 1.1s;
}

.hero-demo-card__wave span:nth-child(3n) {
  animation-duration: 1.6s;
}

.hero-demo-card__wave span:nth-child(4n) {
  animation-duration: 1.25s;
}

.hero-demo-card__play {
  position: absolute;
  width: 72px;
  height: 72px;
  border-radius: 999px;
  border: none;
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  cursor: pointer;
  transition: transform var(--transition-base), background var(--transition-base);
  backdrop-filter: blur(8px);
}

.hero-demo-card__play svg {
  width: 22px;
  height: 22px;
}

.hero-demo-card__play:hover,
.hero-demo-card__play:focus-visible {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.05);
}

.hero-demo-card__meta {
  display: flex;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
}

.hero-demo-card__cta {
  align-self: flex-start;
}

.demo-form-section {
  padding-top: 0;
}

.demo-form-section__layout {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(24px, 4vw, 56px);
  align-items: start;
}

.demo-form-section__content {
  display: grid;
  gap: 0.75rem;
}

.demo-form-section__content p {
  margin: 0;
  color: var(--color-muted);
  max-width: 45ch;
}

@keyframes demoWave {
  0% {
    height: 10px;
    opacity: 0.4;
  }

  50% {
    height: 48px;
    opacity: 1;
  }

  100% {
    height: 14px;
    opacity: 0.5;
  }
}

@media (max-width: 1024px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-drawer {
    position: fixed;
    inset: var(--header-height) 16px auto 16px;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 24px;
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
    opacity: 0;
    transform: translateY(-12px);
    pointer-events: none;
    transition: opacity var(--transition-base), transform var(--transition-base);
  }

  .site-header.is-open .nav-drawer {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .nav-actions {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
  }

  .hero__inner,
  .chat-content {
    grid-template-columns: 1fr;
  }

  .hero__content,
  .hero__visual,
  .chat-panel,
  .chat-preview {
    grid-column: span 1;
  }

  .hero__visual {
    order: 1;
  }

  .hero-visual__orb {
    width: min(320px, 80%);
  }

  .chat-section::before {
    border-radius: var(--radius-md);
  }

  .contact-card {
    grid-template-columns: 1fr;
    padding: 32px;
  }

  .timeline::before {
    display: none;
  }

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

  .site-nav__item--dropdown {
    width: 100%;
  }

  .site-nav__item--dropdown .site-nav__submenu {
    position: static;
    display: none;
    margin-top: 0.75rem;
    padding: 0;
    border: none;
    box-shadow: none;
    background: transparent;
  }

  .site-header.is-open .site-nav__item--dropdown[data-open="true"] .site-nav__submenu {
    display: block;
  }
}

@media (max-width: 768px) {
  .grid-three,
  .grid-two,
  .analytics-grid {
    grid-template-columns: 1fr;
  }

  .section__header {
    margin-bottom: 36px;
  }

  .hero__actions {
    flex-direction: column;
    gap: 0.75rem;
  }

  .button {
    width: 100%;
  }

  .hero-demo-card {
    padding: 24px;
  }

  .hero-demo-card__media {
    padding: 24px;
  }

  .hero-demo-card__meta {
    flex-wrap: wrap;
  }

  .lead-form__grid {
    grid-template-columns: 1fr;
  }

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

  .cta-form {
    grid-template-columns: 1fr;
    padding: 24px;
  }

  .sticky-telegram {
    right: 16px;
    bottom: 16px;
  }

  .footer__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 2rem;
  }

  .footer__nav {
    grid-auto-flow: row;
    gap: 24px;
    width: 100%;
  }

  .cookie-banner {
    left: 16px;
    right: 16px;
  }
}