.footer {
  background: linear-gradient(180deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-12) 0 var(--spacing-6);
  margin-top: auto;
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  opacity: 0.5;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--spacing-8);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-4);
}

.footer-logo span {
  color: var(--color-accent);
  text-shadow: 0 0 10px var(--color-accent-glow);
}

.footer-description {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
}

.footer-section h4 {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-4);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.footer-link {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
  position: relative;
  display: inline-block;
}

.footer-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-accent);
  text-shadow: 0 0 10px var(--color-accent-glow);
}

.footer-link:hover::after {
  width: 100%;
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-4);
  padding-top: var(--spacing-8);
  margin-top: var(--spacing-8);
  border-top: 1px solid var(--color-border);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer-copyright {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.footer-credits {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.footer-credits a {
  color: var(--color-accent);
  text-shadow: 0 0 5px var(--color-accent-glow);
}

.footer-credits a:hover {
  text-decoration: underline;
}

.back-to-top {
  position: fixed;
  bottom: var(--spacing-6);
  right: var(--spacing-6);
  width: 48px;
  height: 48px;
  background: var(--color-accent);
  color: var(--color-bg-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 20px var(--color-accent-glow);
  z-index: 50;
  border: none;
  cursor: pointer;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px var(--color-accent-glow);
}

.back-to-top svg {
  width: 24px;
  height: 24px;
}

/* ── FOOTER SOCIALS ─────────────────────────── */
.footer-socials {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  margin-top: var(--spacing-4);
}

.footer-social {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

.footer-social:hover {
  color: var(--color-primary);
  border-color: rgba(0, 212, 255, 0.3);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 212, 255, 0.1);
}

.footer-social svg {
  width: 18px;
  height: 18px;
}

/* ── FOOTER NEWSLETTER ──────────────────────── */
.footer-newsletter {
  margin-top: var(--spacing-4);
}

.footer-newsletter__label {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-2);
}

.footer-newsletter__input-group {
  display: flex;
  gap: 0;
}

.footer-newsletter__input {
  flex: 1;
  padding: var(--spacing-2) var(--spacing-3);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md) 0 0 var(--radius-md);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.footer-newsletter__input::placeholder {
  color: var(--color-text-muted);
}

.footer-newsletter__input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.footer-newsletter__btn {
  padding: var(--spacing-2) var(--spacing-3);
  background: var(--color-primary);
  color: var(--color-bg-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  border: 1px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.footer-newsletter__btn:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}

.footer-logo {
  border-radius: 8px;
}

.footer-heart {
  color: #ff4d4d;
}