.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.875rem;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast), background-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.btn--primary {
  background: var(--color-bg-inverse);
  color: var(--color-text-on-dark);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--color-bg);
  color: var(--color-text);
  box-shadow: var(--shadow-btn-hover);
}

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

.section--dark .btn--outline {
  border-color: var(--color-border-dark);
  color: var(--color-text-on-dark);
}

.card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 1.5rem;
  background: var(--color-bg);
}

.section--dark .card {
  background: transparent;
  border-color: var(--color-border-dark);
}

.card__title {
  font-weight: var(--font-weight-semibold);
  margin-bottom: 0.5rem;
}

.card__text {
  font-size: var(--text-body);
  color: var(--color-text-muted);
}

.section--dark .card__text {
  color: var(--color-text-muted-on-dark);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  height: var(--header-height);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  transition:
    box-shadow 0.25s ease,
    border-color 0.25s ease;
}

.site-header.is-scrolled {
  box-shadow: 0 8px 28px -12px rgba(0, 0, 0, 0.12);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 100%;
}

/* ponytail: source PNG keeps ~2/3 empty margin; crop to the ink box (947x285 @ 118,267 of 1152x864)
   with a fixed-aspect window instead of re-exporting the asset. Percentages stay valid at any size. */
.site-header__logo {
  display: block;
  position: relative;
  flex-shrink: 0;
  width: 8.75rem;
  aspect-ratio: 947 / 285;
  overflow: hidden;
}

.site-header__logo img {
  position: absolute;
  width: 121.65%;
  max-width: none;
  height: auto;
  left: -12.46%;
  top: -93.68%;
}

.site-header__nav {
  display: none;
}

.site-header__nav-list {
  display: flex;
  gap: 1.75rem;
  font-size: 0.9375rem;
}

.site-header__nav-link {
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.site-header__nav-link:hover,
.site-header__nav-link:focus-visible {
  opacity: 0.65;
}

.site-header__actions {
  display: none;
  align-items: center;
  gap: 1rem;
}

.site-header__contact {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  font-size: 0.8125rem;
  line-height: 1.3;
}

.site-header__contact a:hover {
  text-decoration: underline;
}

.site-header__social {
  display: flex;
  gap: 0.5rem;
}

.social-btn {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: var(--color-bg-inverse);
  color: var(--color-text-on-dark);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.625rem;
  font-weight: var(--font-weight-bold);
}

.site-header__burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0.5rem;
  border: none;
  background: transparent;
  cursor: pointer;
}

.site-header__burger span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-header.is-open .site-header__burger span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header.is-open .site-header__burger span:nth-child(2) {
  opacity: 0;
}

.site-header.is-open .site-header__burger span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-nav {
  position: fixed;
  inset: var(--header-height) 0 0 0;
  background: var(--color-bg);
  padding: 2rem var(--space-container-x);
  z-index: calc(var(--z-header) - 1);
  overflow-y: auto;
  visibility: hidden;
  opacity: 0;
  transform: translate3d(0, -0.75rem, 0);
  transition:
    opacity 0.28s ease,
    transform 0.28s ease,
    visibility 0.28s ease;
}

.site-header.is-open .mobile-nav {
  visibility: visible;
  opacity: 1;
  transform: none;
}

.mobile-nav__list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  font-size: 1.25rem;
  margin-bottom: 2rem;
}

.mobile-nav__meta {
  font-size: var(--text-body);
  margin-bottom: 1.5rem;
}

@media (min-width: 1024px) {
  .site-header__burger {
    display: none;
  }

  .site-header__nav {
    display: block;
    flex: 1;
    margin-inline: 2rem;
  }

  .site-header__actions {
    display: flex;
  }

  .mobile-nav {
    display: none;
  }
}

@media (max-width: 1023px) {
  .mobile-nav {
    display: block;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mobile-nav {
    transform: none;
    transition: opacity 0.15s ease, visibility 0.15s ease;
  }
}

@media (max-width: 1023px) {
  .site-header__cta-desktop {
    display: none;
  }
}

@media (min-width: 1024px) {
  .site-header__cta-mobile {
    display: none;
  }
}

/* Forms */
.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 1rem;
}

.form-field input,
.form-field textarea {
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  width: 100%;
}

.consent {
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
  font-size: var(--text-caption);
  color: var(--color-text-muted);
  margin: 1rem 0;
}

.consent a {
  text-decoration: underline;
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  visibility: hidden;
  opacity: 0;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
}

.modal.is-open {
  visibility: visible;
  opacity: 1;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: var(--color-overlay);
}

.modal__dialog {
  position: relative;
  background: var(--color-bg);
  border-radius: var(--radius-card);
  padding: 2rem;
  width: 100%;
  max-width: 28rem;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.97) translate3d(0, 0.5rem, 0);
  transition: transform 0.28s ease;
}

.modal.is-open .modal__dialog {
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .modal__dialog {
    transform: none;
    transition: none;
  }
}

.modal__close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  border: none;
  background: transparent;
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

/* Messenger widget */
.messenger-widget {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: var(--z-widget);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.messenger-widget__hint {
  background: var(--color-bg-inverse);
  color: var(--color-text-on-dark);
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  font-size: var(--text-caption);
  max-width: 12rem;
}

.messenger-widget__btn {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  border: none;
  background: var(--color-bg-inverse);
  color: var(--color-text-on-dark);
  cursor: pointer;
  font-size: 1.25rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

@media (hover: hover) {
  .messenger-widget__btn:hover,
  .messenger-widget__btn:focus-visible {
    transform: scale(1.06);
    box-shadow: var(--shadow-btn-hover);
  }
}

.messenger-widget {
  animation: widget-enter 0.6s ease 0.8s both;
}

@keyframes widget-enter {
  from {
    opacity: 0;
    transform: translate3d(0, 0.75rem, 0);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .messenger-widget {
    animation: none;
  }
}

@media (max-width: 639px) {
  .messenger-widget__hint {
    display: none;
  }
}

/* Contacts (footer block) */
.contacts-section {
  padding-block: var(--space-section-y);
  border-top: 1px solid var(--color-border);
}

.contacts-section__title {
  font-size: var(--text-display-lg);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.contacts-section__lines {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: var(--text-body-lg);
}

.contacts-section__legal {
  margin-top: 1rem;
  font-size: var(--text-body);
  color: var(--color-text-muted);
}