/* ============================================================
   AlgoDev Studio | Footer
   ============================================================ */

.footer {
  background: var(--bg-0);
  border-top: 1px solid var(--bdr-1);
  position: relative;
  overflow: hidden;
}

.footer-main {
  padding: 80px 0 60px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1.2fr;
  gap: 48px;
}

/* Brand column */
.footer-brand { }

.footer-logo {
  display: inline-flex;
  align-items: center;
  margin-bottom: 20px;
  text-decoration: none;
  transition: opacity 0.2s;
}

.footer-logo:hover { opacity: 0.85; }

.footer-logo-img {
  height: 64px;
  width: auto;
  display: block;
  object-fit: contain;
}

.footer-tagline {
  font-size: var(--text-sm);
  color: var(--txt-5);
  line-height: 1.7;
  max-width: 280px;
  margin-bottom: 24px;
}

.footer-locations {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-location {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--text-sm);
  color: var(--txt-5);
}

.footer-location svg {
  color: var(--teal);
  flex-shrink: 0;
  width: 14px;
  height: 14px;
}

.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 24px;
}

.social-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--r-sm);
  background: var(--bg-glass-md);
  border: 1px solid var(--bdr-1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--txt-5);
  transition: all var(--t-base);
  text-decoration: none;
}

.social-btn:hover {
  background: var(--teal-dim);
  border-color: var(--teal-border);
  color: var(--teal);
}

.social-btn svg { width: 16px; height: 16px; }

/* Nav columns */
.footer-col-title {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--txt-3);
  margin-bottom: 20px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.footer-link {
  font-size: var(--text-sm);
  color: var(--txt-5);
  transition: color var(--t-fast);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 6px;
}

.footer-link:hover { color: var(--teal); }

/* Newsletter column */
.footer-newsletter-text {
  font-size: var(--text-sm);
  color: var(--txt-5);
  line-height: 1.6;
  margin-bottom: 16px;
}

.footer-newsletter-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-input {
  width: 100%;
  padding: 11px 16px;
  background: var(--bg-glass-md);
  border: 1px solid var(--bdr-1);
  border-radius: var(--r-md);
  font-family: var(--font);
  font-size: var(--text-sm);
  color: var(--txt-1);
  transition: border-color var(--t-base);
}

.footer-input::placeholder { color: var(--txt-6); }

.footer-input:focus {
  outline: none;
  border-color: var(--teal-border);
}

/* Bottom bar */
.footer-bottom {
  padding: 20px 0;
  border-top: 1px solid var(--bdr-1);
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-copyright {
  font-size: var(--text-xs);
  color: var(--txt-6);
}

.footer-bottom-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.footer-bottom-link {
  font-size: var(--text-xs);
  color: var(--txt-6);
  text-decoration: none;
  transition: color var(--t-fast);
}

.footer-bottom-link:hover { color: var(--txt-4); }

/* Divider */
.footer-bottom-sep {
  color: var(--txt-6);
  font-size: 10px;
}

/* Status badge */
.footer-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--text-xs);
  color: var(--txt-6);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  animation: pulse-dot 2s ease-in-out infinite;
}

/* Responsive */
@media (max-width: 1200px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
  .footer-newsletter-col { display: none; }
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
}