/* Інтерактивні кнопки — hover, shine, focus, active (макет zip) */

.btn {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  border-radius: var(--radius-md);
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition:
    background-color var(--duration-ui) var(--ease-out),
    border-color var(--duration-ui) var(--ease-out),
    color var(--duration-ui) var(--ease-out),
    transform var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-ui) var(--ease-out);
}

.btn:focus {
  outline: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-sage);
  outline-offset: 3px;
}

.btn--shine::before,
.btn--primary::before,
.btn--cta::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
    105deg,
    transparent 38%,
    rgba(255, 255, 255, 0.32) 50%,
    transparent 62%
  );
  transform: translateX(-130%);
  transition: transform 620ms var(--ease-out);
  pointer-events: none;
}

.btn--primary {
  background: var(--color-navy);
  color: var(--color-white);
  border-color: transparent;
  box-shadow: var(--shadow-btn-navy);
}

@media (hover: hover) and (pointer: fine) {
  .btn--primary:hover {
    background: var(--color-navy-dark);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-btn-navy-hover);
  }

  .btn--primary:hover::before,
  .btn--cta:hover::before,
  .btn--shine:hover::before {
    transform: translateX(130%);
  }
}

.btn--primary:active,
.btn--cta:active,
.btn--secondary:active {
  transform: scale(0.97) translateY(0);
}

.btn--secondary {
  background: var(--color-white);
  color: var(--color-navy);
  border-color: rgba(31, 74, 115, 0.24);
  box-shadow: 0 2px 8px rgba(31, 74, 115, 0.06);
}

@media (hover: hover) and (pointer: fine) {
  .btn--secondary:hover {
    background: var(--color-bg-accent);
    border-color: rgba(31, 74, 115, 0.34);
    color: var(--color-navy);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(31, 74, 115, 0.1);
  }
}

.btn--sage {
  box-shadow: 0 4px 14px rgba(138, 175, 168, 0.35);
}

@media (hover: hover) and (pointer: fine) {
  .btn--sage:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(138, 175, 168, 0.45);
  }
}

.btn--cta {
  background: var(--color-navy);
  color: var(--color-white);
  border-color: transparent;
  box-shadow: var(--shadow-btn-navy);
  font-size: 0.9375rem;
  padding: 0.6875rem 1.375rem;
  min-height: 42px;
  text-decoration: none;
  text-decoration-thickness: 0;
}

.btn--hero.btn--primary {
  box-shadow: 0 10px 26px rgba(31, 74, 115, 0.26);
}

@media (hover: hover) and (pointer: fine) {
  .btn--hero.btn--primary:hover {
    box-shadow: 0 14px 32px rgba(31, 74, 115, 0.34);
  }
}

@media (hover: hover) and (pointer: fine) {
  .btn--cta:hover {
    background: var(--color-navy-dark);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-btn-navy-hover);
  }
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 500;
  color: var(--color-graphite);
  border-radius: var(--radius-pill);
  padding: 0.625rem 0.9375rem;
  font-size: 0.84375rem;
  line-height: 1.2;
  min-height: 40px;
  white-space: nowrap;
  text-decoration: none;
  text-decoration-thickness: 0;
  transition:
    color var(--duration-ui) var(--ease-out),
    background-color var(--duration-ui) var(--ease-out),
    transform var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-ui) var(--ease-out);
}

@media (min-width: 1280px) {
  .site-nav__link {
    padding: 0.6875rem 1.0625rem;
    font-size: 0.9rem;
    min-height: 41px;
  }
}

.site-nav__link::after {
  display: none;
}

@media (hover: hover) and (pointer: fine) {
  .site-nav__link:hover {
    color: var(--color-navy);
    background: rgba(255, 255, 255, 0.72);
    transform: translateY(-1px);
  }
}

.site-nav__link.is-active {
  font-weight: 600;
  color: var(--color-navy);
  background: var(--color-white);
  box-shadow: 0 1px 4px rgba(31, 74, 115, 0.1);
}

.site-nav__link--stacked {
  padding-top: 0.4375rem;
  padding-bottom: 0.4375rem;
}

.site-nav__stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.0625rem;
  text-align: center;
  line-height: 1.05;
}

.site-nav__stack-main {
  font-weight: inherit;
  letter-spacing: -0.01em;
}

.site-nav__stack-sub {
  font-size: 0.72em;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--color-graphite-muted);
}

.site-nav__link--stacked.is-active .site-nav__stack-sub,
.site-nav__link--stacked:hover .site-nav__stack-sub {
  color: var(--color-navy);
  opacity: 0.82;
}

@media (min-width: 1440px) {
  .site-nav__stack {
    flex-direction: row;
    align-items: baseline;
    gap: 0.3em;
    white-space: nowrap;
  }

  .site-nav__stack-sub {
    font-size: 0.92em;
    font-weight: inherit;
    letter-spacing: 0;
    color: inherit;
    opacity: 1;
  }

  .site-nav__link--stacked.is-active .site-nav__stack-sub,
  .site-nav__link--stacked:hover .site-nav__stack-sub {
    opacity: 1;
  }
}

.site-nav__link:focus-visible {
  outline: 2px solid var(--color-sage);
  outline-offset: 2px;
}

.mobile-nav__link {
  text-decoration: none;
  text-decoration-thickness: 0;
  transition:
    transform var(--duration-modal) var(--ease-out),
    opacity var(--duration-ui) var(--ease-out),
    background-color var(--duration-ui) var(--ease-out),
    box-shadow var(--duration-ui) var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .mobile-nav__link:hover {
    background: var(--color-white);
    box-shadow: 0 6px 18px rgba(31, 74, 115, 0.1);
    transform: translateX(4px);
  }
}

.mobile-nav.is-open .mobile-nav__link:hover {
  transform: translateX(4px);
}

.mobile-nav__link--cta {
  background: var(--color-navy);
  color: var(--color-white);
  box-shadow: var(--shadow-btn-navy);
}

@media (hover: hover) and (pointer: fine) {
  .mobile-nav__link--cta:hover {
    background: var(--color-navy-dark);
    color: var(--color-white);
  }
}

.site-footer__links a {
  position: relative;
  display: inline-block;
  padding: 0.125rem 0;
  transition:
    color var(--duration-ui) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .site-footer__links a:hover {
    color: var(--color-navy);
    transform: translateX(3px);
  }
}

.site-footer__phone {
  transition:
    color var(--duration-ui) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .site-footer__phone:hover {
    color: var(--color-navy-dark);
    transform: translateX(2px);
  }
}

.site-footer__bottom-inner a {
  position: relative;
  transition: color var(--duration-ui) var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .site-footer__bottom-inner a:hover {
    color: var(--color-navy);
  }
}

@media (prefers-reduced-motion: reduce) {
  .btn,
  .btn--primary::before,
  .btn--cta::before,
  .btn--shine::before,
  .site-nav__link,
  .mobile-nav__link,
  .site-footer__links a,
  .site-footer__phone {
    transition: none;
  }

  .btn--primary::before,
  .btn--cta::before,
  .btn--shine::before {
    display: none;
  }

  .btn:active,
  .btn--primary:hover,
  .btn--cta:hover,
  .btn--secondary:hover,
  .btn--sage:hover,
  .site-nav__link:hover,
  .site-nav__link:active,
  .mobile-nav__link:hover,
  .site-footer__links a:hover,
  .site-footer__phone:hover {
    transform: none;
  }
}