/* SDA Platform - Footer Component */
/* Modern, responsive footer aligned with landing page style */

.adi-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: var(--space-xl) 0 var(--space-lg);
  margin-top: auto; /* Push to bottom if flexbox body */
  font-size: var(--font-size-sm);
}

.adi-footer__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.adi-footer__main {
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-xl);
}

.adi-footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.adi-footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.adi-footer__logo img {
  height: 40px;
  width: auto;
  border-radius: var(--border-radius);
}

.adi-footer__brand-text {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
}

.adi-footer__description {
  color: var(--text-secondary);
  line-height: var(--line-height-normal);
  margin: 0;
}

.adi-footer__social {
  display: flex;
  gap: var(--space-sm);
}

.adi-footer__social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--space-2xl);
  height: var(--space-2xl);
  background: var(--hs-body-bg);
  border-radius: var(--border-radius);
  color: var(--text-primary);
  text-decoration: none;
  transition: background var(--transition-fast);
}

.adi-footer__social-link:hover,
.adi-footer__social-link:focus {
  background: var(--hover);
  outline: 2px solid var(--color1);
  outline-offset: 2px;
}

.adi-footer__columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-2xl);
}

.adi-footer__column {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.adi-footer__column-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin: 0;
}

.adi-footer__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.adi-footer__link {
  color: #6b7280;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.adi-footer__link:hover,
.adi-footer__link:focus {
  color: var(--color2);
  text-decoration: underline;
  outline: 2px solid var(--color1);
  outline-offset: 2px;
}

.adi-footer__bottom {
  border-top: 1px solid var(--border);
  padding-top: var(--space-lg);
}

.adi-footer__bottom-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  align-items: center;
}

.adi-footer__language {
  position: relative;
}

.adi-footer__language-btn {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--border-radius);
  padding: var(--space-xs) var(--space-sm);
  cursor: pointer;
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  transition: border-color var(--transition-fast);
}

.adi-footer__language-btn:hover,
.adi-footer__language-btn:focus {
  border-color: var(--color1);
  outline: 2px solid var(--color1);
  outline-offset: 2px;
}

.adi-footer__language-menu {
  position: absolute;
  bottom: 100%;
  left: 0;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  min-width: 150px;
  z-index: 1000;
}

.adi-footer__language-option {
  display: block;
  width: 100%;
  padding: var(--space-sm);
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  transition: background var(--transition-fast);
}

.adi-footer__language-option:hover,
.adi-footer__language-option:focus {
  background: var(--hover);
  outline: 2px solid var(--color1);
}

.adi-footer__accessibility {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.adi-footer__accessibility-btn {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--border-radius);
  padding: var(--space-xs) var(--space-sm);
  cursor: pointer;
  font-size: var(--font-size-xs);
  color: var(--text-primary);
  transition: border-color var(--transition-fast);
  white-space: nowrap;
}

.adi-footer__accessibility-btn:hover,
.adi-footer__accessibility-btn:focus {
  border-color: var(--color1);
  outline: 2px solid var(--color1);
  outline-offset: 2px;
}

.adi-footer__copyright {
  justify-self: center;
  text-align: center;
}

.adi-footer__copyright-text {
  margin: 0 0 var(--space-xs) 0;
  color: var(--text-secondary);
}

.adi-footer__legal {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}

.adi-footer__legal-link {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.adi-footer__legal-link:hover,
.adi-footer__legal-link:focus {
  color: var(--color2);
  text-decoration: underline;
  outline: 2px solid var(--color1);
  outline-offset: 2px;
}

.adi-footer__legal-separator {
  color: var(--text-muted);
}

.adi-footer__status {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
}

.adi-footer__status-dot {
  display: inline-block;
  width: var(--space-xs);
  height: var(--space-xs);
  border-radius: 50%;
  background: var(--success);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.adi-footer__status-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: var(--font-size-xs);
}

.adi-footer__status-link:hover,
.adi-footer__status-link:focus {
  color: var(--color2);
  text-decoration: underline;
  outline: 2px solid var(--color1);
  outline-offset: 2px;
}

.adi-footer__donate {
  background: linear-gradient(135deg, var(--color2), var(--color4));
  color: white;
  padding: var(--space-lg);
  border-radius: var(--border-radius-lg);
  text-align: center;
  margin: var(--space-2xl) 0 0 0;
  animation: fadeInUp 0.5s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.adi-footer__donate-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.adi-footer__donate-text {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
}

.adi-footer__donate-btn {
  background: white;
  color: var(--color2);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: var(--font-weight-semibold);
  transition: transform var(--transition-fast);
}

.adi-footer__donate-btn:hover,
.adi-footer__donate-btn:focus {
  transform: translateY(-2px);
  outline: 2px solid white;
  outline-offset: 2px;
}

.adi-footer__back-to-top {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  width: var(--space-3xl);
  height: var(--space-3xl);
  background: var(--color2);
  border: none;
  border-radius: 50%;
  color: white;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-fast), background var(--transition-fast);
  font-size: var(--font-size-xl);
  z-index: 1050;
}

.adi-footer__back-to-top:hover,
.adi-footer__back-to-top:focus {
  transform: translateY(-2px);
  background: var(--color3);
  outline: 2px solid var(--color1);
  outline-offset: 2px;
}

/* Responsive breakpoints */
@media (max-width: 768px) {
  .adi-footer__main {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .adi-footer__columns {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .adi-footer__bottom-content {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .adi-footer__copyright {
    order: -1;
  }

  .adi-footer__status {
    justify-self: center;
  }

  .adi-footer__language-menu {
    position: static;
    margin-top: var(--space-xs);
  }

  .adi-footer__donate-content {
    flex-direction: column;
    text-align: center;
  }

  .adi-footer__back-to-top {
    bottom: var(--space-md);
    right: var(--space-md);
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  .adi-footer__social-link,
  .adi-footer__link,
  .adi-footer__language-btn,
  .adi-footer__accessibility-btn,
  .adi-footer__language-option,
  .adi-footer__legal-link,
  .adi-footer__status-link,
  .adi-footer__donate-btn,
  .adi-footer__back-to-top {
    transition: none;
  }

  .adi-footer__status-dot {
    animation: none;
  }

  .adi-footer__donate {
    animation: none;
  }
}

@media (prefers-contrast: high) {
  .adi-footer {
    background: black;
    border-top-color: white;
  }

  .adi-footer__language-btn,
  .adi-footer__accessibility-btn {
    border-color: white;
  }

  .adi-footer__language-menu {
    border-color: white;
    background: black;
  }

  .adi-footer__bottom {
    border-top-color: white;
  }
}

/* Focus indicators */
.adi-footer__social-link:focus,
.adi-footer__link:focus,
.adi-footer__language-btn:focus,
.adi-footer__accessibility-btn:focus,
.adi-footer__language-option:focus,
.adi-footer__legal-link:focus,
.adi-footer__status-link:focus,
.adi-footer__donate-btn:focus,
.adi-footer__back-to-top:focus {
  outline: 3px solid var(--color1);
  outline-offset: 2px;
}