/* ===== Footer Component - Compact Layout ===== */

footer {
  background-color: var(--color-bg-dark);
  color: var(--color-text-light);
  padding: var(--spacing-xl) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

@media (min-width: 1024px) {
  .footer-container {
    padding: 0 var(--container-padding-lg);
  }
}

/* ===== Compact Footer Layout ===== */

.footer-compact {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
}

/* ===== Three-Column Grid ===== */

.footer-columns {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xl);
  width: 100%;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-columns {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    text-align: left;
  }
}

/* ===== Footer Columns ===== */

.footer-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
}

@media (min-width: 768px) {
  .footer-col {
    align-items: flex-start;
  }
}

.footer-col a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-text-light-muted);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.footer-col a:hover {
  color: var(--color-primary-light);
}

.footer-col a:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 4px;
  border-radius: var(--radius-sm);
  color: var(--color-primary-light);
}

.footer-col svg {
  flex-shrink: 0;
}

/* Center Column: Logo */

.footer-col-center {
  align-items: center;
}

.footer-logo-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  text-decoration: none;
}

.footer-logo-link img {
  height: 50px;
  width: auto;
}

.footer-logo-link span {
  font-family: var(--font-primary);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-light);
  white-space: nowrap;
}

.footer-logo-link:hover span {
  color: var(--color-primary-light);
}

/* Right Column: Legal */

@media (min-width: 768px) {
  .footer-col-end {
    align-items: flex-end;
  }
}

/* ===== Copyright ===== */

.footer-copyright {
  color: var(--color-text-light-muted);
  font-size: var(--font-size-xs);
  margin: 0;
  text-align: center;
}

/* ===== Back to Top Button ===== */

.back-to-top {
  position: fixed;
  width: 50px;
  height: 50px;
  background: var(--color-secondary);
  color: var(--color-text-light);
  border: none;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition:
    opacity 400ms cubic-bezier(0.4, 0, 0.2, 1),
    visibility 400ms cubic-bezier(0.4, 0, 0.2, 1),
    transform 400ms cubic-bezier(0.4, 0, 0.2, 1),
    background 200ms ease,
    box-shadow 200ms ease;
  box-shadow: var(--shadow-lg);
  z-index: var(--z-sticky);
}

@media (max-width: 639px) {
  .back-to-top {
    bottom: 80px;
    right: var(--spacing-lg);
  }
}

@media (min-width: 640px) and (max-width: 768px) {
  .back-to-top {
    bottom: 80px;
    right: var(--spacing-xl);
  }
}

@media (min-width: 768px) {
  .back-to-top {
    bottom: 80px;
    right: var(--spacing-xl);
  }
}

@media (orientation: landscape) and (max-height: 500px) {
  .back-to-top {
    bottom: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 40px;
    height: 40px;
  }
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top.visible:hover {
  background: var(--color-secondary-light);
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

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