/* ============================================
   StatsAlpha Footer Styling
   Design System: Bootstrap 5 + StatsAlpha Brand
   ============================================ */

/* CSS Variables for Footer Brand Colors */
:root {
  --sa-footer-bg: #0f172a;
  --sa-footer-border: #1e293b;
  --sa-footer-text-primary: #f1f5f9;
  --sa-footer-text-secondary: #cbd5e1;
  --sa-footer-text-muted: #94a3b8;
  --sa-footer-accent: #2563eb;
  --sa-footer-accent-hover: #1d4ed8;
  --sa-footer-secondary: #14b8a6;
  --sa-footer-secondary-hover: #0f766e;
}

/* Main Footer Container */
.site-footer {
  background-color: var(--sa-footer-bg);
  color: var(--sa-footer-text-primary);
  padding: 4rem 0;
  margin-top: auto;
  border-top: 1px solid var(--sa-footer-border);
  transition: background-color 0.3s ease;
}

/* Footer Grid & Column Spacing */
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 0.8fr 1.2fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 576px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* Section Headings */
.footer-section-title {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--sa-footer-text-secondary);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-section-title::before {
  content: '';
  width: 3px;
  height: 1rem;
  background: linear-gradient(180deg, var(--sa-footer-accent) 0%, var(--sa-footer-secondary) 100%);
  border-radius: 2px;
}

/* Brand column (first column) */
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-brand-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--sa-footer-text-primary);
  margin: 0;
}

.footer-brand-desc {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--sa-footer-text-secondary);
  margin: 0;
}

/* Social Links */
.footer-social-links {
  display: flex;
  gap: 1rem;
  padding-top: 0.5rem;
}

.footer-social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background-color: rgba(37, 99, 235, 0.08);
  color: var(--sa-footer-accent);
  text-decoration: none;
  transition: all 0.2s ease;
  font-size: 1.1rem;
}

.footer-social-links a:hover {
  background-color: var(--sa-footer-accent);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

/* List Styling */
.footer-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-list li {
  margin-bottom: 0.75rem;
}

.footer-list a {
  color: var(--sa-footer-text-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  line-height: 1.5;
  transition: color 0.2s ease, padding-left 0.2s ease;
  display: inline-block;
  position: relative;
}

.footer-list a::before {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--sa-footer-accent), var(--sa-footer-secondary));
  transition: width 0.2s ease;
}

.footer-list a:hover {
  color: var(--sa-footer-accent);
  padding-left: 8px;
}

.footer-list a:hover::before {
  width: 100%;
}

/* Disclaimer & Legal Box */
.footer-divider {
  border-top: 1px solid var(--sa-footer-border);
  margin: 2rem 0;
  padding: 2rem 0;
}

.footer-disclaimer {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, rgba(20, 184, 166, 0.05) 100%);
  border: 1px solid var(--sa-footer-border);
  border-left: 3px solid var(--sa-footer-accent);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.footer-disclaimer-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--sa-footer-accent);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-disclaimer-text {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--sa-footer-text-secondary);
  margin: 0;
}

/* Footer Bottom */
.footer-bottom {
  border-top: 1px solid var(--sa-footer-border);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

@media (max-width: 576px) {
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

.footer-copyright {
  font-size: 0.875rem;
  color: var(--sa-footer-text-muted);
  margin: 0;
}

.footer-copyright strong {
  color: var(--sa-footer-text-secondary);
}

/* Legal links footer */
.footer-legal-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

@media (max-width: 576px) {
  .footer-legal-links {
    flex-direction: column;
    gap: 0.5rem;
  }
}

.footer-legal-links a {
  font-size: 0.875rem;
  color: var(--sa-footer-text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-legal-links a:hover {
  color: var(--sa-footer-accent);
}

/* Tagline */
.footer-tagline {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--sa-footer-text-muted);
  margin: 0;
}

/* Subtle animation on load */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.site-footer {
  animation: fadeInUp 0.6s ease-out;
}

/* Dark mode compatibility (if needed) */
@media (prefers-color-scheme: dark) {
  :root {
    --sa-footer-bg: #0f172a;
    --sa-footer-border: #1e293b;
    --sa-footer-text-primary: #f1f5f9;
    --sa-footer-text-secondary: #cbd5e1;
    --sa-footer-text-muted: #94a3b8;
  }
}