/* ============================================
   Component: Main Footer - Premium Dark
   ============================================ */
.main-footer {
  position: relative;
  overflow: hidden;
  margin-top: 6rem;
  padding: 5rem 1rem 2.5rem;
  background: linear-gradient(135deg, color-mix(in srgb, var(--color-card), var(--color-primary-soft) 45%), color-mix(in srgb, var(--color-card), var(--color-accent-soft) 18%));
  border-top: 1px solid var(--color-line);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12), 0 -2rem 4rem rgba(0, 0, 0, 0.04);
}

.main-footer::before {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 12% 18%, color-mix(in srgb, var(--color-primary), transparent 75%), transparent 18rem),
    radial-gradient(circle at 88% 12%, color-mix(in srgb, var(--color-accent-light), transparent 70%), transparent 16rem),
    radial-gradient(circle at 50% 100%, color-mix(in srgb, var(--color-primary), transparent 80%), transparent 20rem),
    radial-gradient(circle at 70% 50%, color-mix(in srgb, var(--color-primary), transparent 85%), transparent 25rem);
  content: "";
  pointer-events: none;
}

/* Decorative floating orbs with 3D depth */
.main-footer::after {
  position: absolute;
  inset-block: auto -15%;
  inset-inline-start: 5%;
  width: 20rem;
  height: 20rem;
  background: radial-gradient(circle, color-mix(in srgb, var(--color-accent-light), transparent 75%), transparent 70%);
  border-radius: 50%;
  content: "";
  pointer-events: none;
  animation: footer-orb-3d 14s ease-in-out infinite;
  transform-style: preserve-3d;
  transform: translateZ(-30px);
}

.main-footer__orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  animation: footer-orb-3d 18s ease-in-out infinite reverse;
  transform-style: preserve-3d;
}

.main-footer__orb--1 {
  inset-block: 10% auto;
  inset-inline-end: 12%;
  width: 15rem;
  height: 15rem;
  background: radial-gradient(circle, color-mix(in srgb, var(--color-primary), transparent 80%), transparent 70%);
  transform: translateZ(-15px);
  animation-delay: -4s;
}

.main-footer__orb--2 {
  inset-block: 40% auto;
  inset-inline-start: 25%;
  width: 10rem;
  height: 10rem;
  background: radial-gradient(circle, color-mix(in srgb, var(--color-accent-light), transparent 80%), transparent 70%);
  transform: translateZ(10px);
  animation-duration: 22s;
  animation-delay: -8s;
}

@keyframes footer-orb-3d {
  0%, 100% { transform: translate(0, 0) scale(1) rotate(0deg); }
  33% { transform: translate(20px, -15px) scale(1.08) rotate(3deg); }
  66% { transform: translate(-15px, 10px) scale(0.94) rotate(-2deg); }
}

.main-footer__container {
  position: relative;
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: 2rem;
  width: min(100%, var(--container-size));
  margin: 0 auto;
  z-index: 1;
}

.main-footer__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  text-decoration: none;
  color: var(--color-ink);
  font-weight: 900;
  font-size: 1.15rem;
}

.main-footer__logo {
  width: 2.5rem;
  height: 2.5rem;
  filter: drop-shadow(0 0.5rem 1rem rgba(15, 95, 89, 0.2));
}

.main-footer__title,
.main-footer__heading {
  margin: 0 0 1rem;
  color: var(--color-ink);
  font-weight: 700;
  position: relative;
  padding-bottom: 0.6rem;
}

.main-footer__heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  inset-inline-start: 0;
  width: 2rem;
  height: 2px;
  background: var(--color-accent);
  border-radius: 999px;
}

.main-footer__text {
  max-width: 28rem;
  margin: 0;
  color: var(--color-muted);
  line-height: var(--leading-relaxed);
}

.main-footer__social {
  display: flex;
  gap: 0.65rem;
  margin-top: 1.25rem;
}

.main-footer__social-link {
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  color: var(--color-muted);
  background: color-mix(in srgb, var(--color-card), transparent 15%);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  text-decoration: none;
  font-size: 1rem;
  transition: all 350ms var(--ease-bounce);
  backdrop-filter: blur(4px);
  position: relative;
}

.main-footer__social-link::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  background: var(--color-primary);
  opacity: 0;
  z-index: -1;
  transition: opacity 350ms var(--ease-smooth);
}

.main-footer__social-link:hover {
  color: white;
  transform: translateY(-4px) scale(1.1);
  box-shadow: 0 0.75rem 2rem rgba(15, 95, 89, 0.25);
}

.main-footer__social-link:hover::before {
  opacity: 1;
}

.main-footer__social-link--instagram:hover {
  background: linear-gradient(135deg, #833ab4, #fd1d1d, #f77737);
  border-color: #fd1d1d;
  box-shadow: 0 0.75rem 2rem rgba(253, 29, 29, 0.2);
}

.main-footer__social-link--telegram:hover {
  background: #0088cc;
  border-color: #0088cc;
  box-shadow: 0 0.75rem 2rem rgba(0, 136, 204, 0.2);
}

.main-footer__social-link--whatsapp:hover {
  background: #25d366;
  border-color: #25d366;
  box-shadow: 0 0.75rem 2rem rgba(37, 211, 102, 0.2);
}

.main-footer__social-link--linkedin:hover {
  background: #0077b5;
  border-color: #0077b5;
  box-shadow: 0 0.75rem 2rem rgba(0, 119, 181, 0.2);
}

.main-footer__link {
  display: block;
  margin: 0.45rem 0;
  padding: 0.25rem 0;
  color: var(--color-muted);
  transition: all 300ms var(--ease-smooth);
  font-weight: 500;
  text-decoration: none;
  position: relative;
}

.main-footer__link::before {
  content: '';
  position: absolute;
  inset-inline-start: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--color-primary);
  transition: width 300ms var(--ease-smooth);
}

.main-footer__link:hover {
  color: var(--color-primary);
  padding-inline-start: 0.35rem;
}

.main-footer__link:hover::before {
  width: 100%;
}

.main-footer__copy {
  width: min(100%, var(--container-size));
  margin: 2rem auto 0;
  padding-top: 1.5rem;
  color: var(--color-muted);
  text-align: center;
  border-top: 1px solid var(--color-line);
  position: relative;
  z-index: 1;
  font-size: 0.92rem;
}

.main-footer__copy a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
  transition: color 300ms var(--ease-smooth);
}

.main-footer__copy a:hover {
  color: var(--color-accent);
}

/* WhatsApp Floating Button */
.whatsapp-link {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 45;
  display: grid;
  place-items: center;
  width: 3.5rem;
  height: 3.5rem;
  font-size: 1.45rem;
  color: white;
  background: linear-gradient(135deg, #22c55e, #16a34a);
  border-radius: 50%;
  box-shadow: 0 0.75rem 2rem rgba(34, 197, 94, 0.28);
  transition: all 280ms var(--ease-smooth);
  border: none;
  cursor: pointer;
  animation: whatsapp-enter 600ms var(--ease-bounce) 500ms both;
}

@keyframes whatsapp-enter {
  from {
    opacity: 0;
    transform: scale(0.3) translateY(2rem);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.whatsapp-link::before {
  position: absolute;
  inset: -0.45rem;
  z-index: -1;
  background: rgba(34, 197, 94, 0.2);
  border-radius: inherit;
  animation: pulse-glow 1.8s ease-out infinite;
  content: "";
}

.whatsapp-link:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 1.25rem 3rem rgba(34, 197, 94, 0.32);
}

.whatsapp-link:active {
  transform: translateY(-2px) scale(0.98);
  box-shadow: 0 0.5rem 1.5rem rgba(34, 197, 94, 0.25);
}