/**
 * styles/footer.css
 * Northshore Gen LLC — Luxury 4-Column Footer & Responsive Architecture
 * Independent Technology Research & Design Studio
 * Features: F01, F14, F15, F16
 */

/* ==========================================================================
   1. Footer Landmark Container & Ambient Backdrop
   ========================================================================== */
.site-footer,
.luxury-footer,
footer#contact {
  position: relative;
  width: 100%;
  background-color: var(--bg-primary, #0a0b0e);
  color: var(--text-primary, #ffffff);
  border-top: 1px solid var(--glass-border-subtle, rgba(255, 255, 255, 0.08));
  padding: var(--section-pad-y, clamp(4rem, 8vw, 8rem)) var(--header-pad-x, clamp(1.5rem, 4vw, 3.5rem)) clamp(2rem, 4vw, 3rem);
  z-index: var(--z-content, 10);
  overflow: hidden;
  box-sizing: border-box;
  min-height: 360px;
}

/* Subtle ambient backdrop radial glow for luxury depth */
.site-footer::before,
.luxury-footer::before,
footer#contact::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: clamp(300px, 60vw, 900px);
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--glass-border-glow, rgba(194, 164, 118, 0.35)) 25%,
    var(--accent-emerald, #C2A476) 50%,
    var(--accent-cyan, #11998e) 75%,
    transparent 100%
  );
  opacity: 0.8;
  pointer-events: none;
}

/* ==========================================================================
   2. 4-Column Luxury Grid Layout
   ========================================================================== */
.site-footer__container,
.footer-grid {
  max-width: var(--container-max-width, 1440px);
  width: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.3fr;
  gap: clamp(2rem, 4vw, 4rem);
  align-items: start;
  box-sizing: border-box;
}

.footer-column {
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
}

.footer-col__title,
.footer-column h4,
.footer-column h5 {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: var(--text-xs, 0.75rem);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-emerald, #C2A476);
  margin-bottom: 1.25rem;
}

/* ==========================================================================
   3. Column 1: Studio Identity & Manifesto
   ========================================================================== */
.footer-col--brand,
.brand-col {
  padding-right: clamp(0.5rem, 2vw, 2rem);
}

.footer-brand,
.footer-brand__name,
.footer-brand h4 {
  font-family: var(--font-display, 'Syne', sans-serif);
  font-size: clamp(1.2rem, 1.1rem + 0.5vw, 1.55rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text-primary, #ffffff);
  display: inline-block;
  margin-bottom: 0.25rem;
}

.footer-brand__desc,
.footer-manifesto {
  font-family: var(--font-sans, 'Inter', sans-serif);
  font-size: var(--text-sm, 0.875rem);
  line-height: 1.7;
  color: var(--color-text-secondary, #8b949e);
  max-width: 360px;
  margin-top: 0.75rem;
  margin-bottom: 1.5rem;
}

.footer-brand__status {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 0.95rem;
  background: var(--glass-bg-low, rgba(255, 255, 255, 0.03));
  border: 1px solid var(--glass-border-subtle, rgba(255, 255, 255, 0.08));
  border-radius: 9999px;
  width: fit-content;
  backdrop-filter: var(--glass-blur-sm, blur(8px));
  -webkit-backdrop-filter: var(--glass-blur-sm, blur(8px));
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.footer-brand__status:hover {
  border-color: var(--glass-border-medium, rgba(255, 255, 255, 0.16));
  box-shadow: 0 0 16px var(--color-accent-glow, rgba(194, 164, 118, 0.25));
}

.footer-brand__status .btn-dot {
  width: 7px;
  height: 7px;
  background-color: var(--accent-emerald, #C2A476);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-emerald, #C2A476);
  animation: pulse-dot 2s infinite ease-in-out;
}

.footer-brand__status .status-text {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: var(--text-xs, 0.75rem);
  font-weight: 500;
  color: var(--accent-emerald, #C2A476);
  letter-spacing: 0.02em;
}

/* ==========================================================================
   4. Column 2: Navigation Quick Links
   ========================================================================== */
.footer-links,
.nav-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.footer-link,
.nav-col ul li a {
  font-family: var(--font-sans, 'Inter', sans-serif);
  font-size: var(--text-sm, 0.875rem);
  color: var(--color-text-secondary, #8b949e);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: color 0.25s ease, transform 0.25s var(--ease-spring);
  width: fit-content;
}

.footer-link:hover,
.nav-col ul li a:hover {
  color: var(--text-primary, #ffffff);
  transform: translateX(4px);
}

/* ==========================================================================
   5. Column 3: Social Channels (FB, IG, Twitter/X)
   ========================================================================== */
.footer-social-list,
.social-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.social-link-item {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.55rem 0.95rem;
  border-radius: var(--border-radius-sm, 8px);
  background: var(--glass-bg-low, rgba(255, 255, 255, 0.03));
  border: 1px solid var(--glass-border-subtle, rgba(255, 255, 255, 0.08));
  color: var(--color-text-secondary, #8b949e);
  font-family: var(--font-sans, 'Inter', sans-serif);
  font-size: var(--text-sm, 0.875rem);
  font-weight: 500;
  text-decoration: none;
  transition:
    background-color 0.25s ease,
    border-color 0.25s ease,
    color 0.25s ease,
    transform 0.25s var(--ease-spring),
    box-shadow 0.25s ease;
  width: fit-content;
  min-width: 140px;
}

.social-link-item:hover {
  background: var(--glass-bg-medium, rgba(255, 255, 255, 0.06));
  border-color: var(--glass-border-glow, rgba(194, 164, 118, 0.35));
  color: var(--text-primary, #ffffff);
  transform: translateX(4px) translateY(-1px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3), 0 0 12px var(--color-accent-glow, rgba(194, 164, 118, 0.2));
}

.social-svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--accent-emerald, #C2A476);
  transition: transform 0.25s var(--ease-spring), filter 0.25s ease, color 0.25s ease;
}

.social-link-item:hover .social-svg {
  transform: scale(1.1);
  color: var(--accent-gold, #f5a623);
  filter: drop-shadow(0 0 8px var(--color-accent-gold-glow, rgba(245, 166, 35, 0.30)));
}

/* ==========================================================================
   6. Column 4: Direct Inquiries & Contact Card
   ========================================================================== */
.footer-contact-block {
  background: var(--glass-bg-low, rgba(255, 255, 255, 0.03));
  backdrop-filter: var(--glass-blur-sm, blur(8px));
  -webkit-backdrop-filter: var(--glass-blur-sm, blur(8px));
  border: 1px solid var(--glass-border-subtle, rgba(255, 255, 255, 0.08));
  border-radius: var(--border-radius-md, 14px);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s var(--ease-spring);
}

.footer-contact-block:hover {
  border-color: var(--glass-border-glow, rgba(194, 164, 118, 0.35));
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4), 0 0 20px var(--color-accent-glow, rgba(194, 164, 118, 0.2));
  transform: translateY(-2px);
}

.footer-link--highlight,
.email-link {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: var(--text-xs, 0.8rem);
  font-weight: 600;
  color: var(--accent-emerald, #C2A476);
  text-decoration: none;
  word-break: break-all;
  display: block;
  margin-bottom: 0.25rem;
  transition: color 0.2s ease, text-shadow 0.2s ease, transform 0.25s var(--ease-spring);
}

.footer-link--highlight:hover,
.email-link:hover {
  color: #ffffff;
  text-shadow: 0 0 12px var(--color-accent-glow, rgba(194, 164, 118, 0.4));
  transform: translateY(-1px);
}

.footer-text-muted {
  font-family: var(--font-sans, 'Inter', sans-serif);
  font-size: var(--text-xs, 0.75rem);
  color: #929aa3;
  line-height: 1.5;
  margin: 0;
}

/* ==========================================================================
   7. Footer Bottom Bar
   ========================================================================== */
.site-footer__bottom,
.footer-bottom {
  max-width: var(--container-max-width, 1440px);
  width: 100%;
  margin: clamp(3.5rem, 6vw, 5rem) auto 0;
  padding-top: 1.75rem;
  border-top: 1px solid var(--glass-border-subtle, rgba(255, 255, 255, 0.08));
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  box-sizing: border-box;
}

.site-footer__copyright,
.copyright {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: var(--text-xs, 0.75rem);
  color: #929aa3;
  margin: 0;
}

.site-footer__meta {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: var(--text-xs, 0.75rem);
  color: var(--color-text-secondary, #8b949e);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ==========================================================================
   8. Responsive Grid Breakpoints
   ========================================================================== */
/* Tablet Breakpoint (1024px) */
@media (max-width: 1024px) {
  .site-footer__container,
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
  }

  .footer-col--brand,
  .brand-col {
    padding-right: 0;
  }
}

/* Mobile Breakpoint (768px) */
@media (max-width: 768px) {
  .site-footer,
  .luxury-footer,
  footer#contact {
    padding: 3.5rem var(--header-pad-x, 1.5rem) 2rem;
  }

  .site-footer__container,
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.25rem;
  }

  .footer-brand__desc,
  .footer-manifesto {
    max-width: 100%;
  }

  .social-link-item,
  .footer-link,
  .email-link {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }

  .social-link-item {
    width: 100%;
    min-width: unset;
  }

  .site-footer__bottom,
  .footer-bottom {
    margin-top: 2.5rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }
}

/* Small Mobile Breakpoint (480px) */
@media (max-width: 480px) {
  .site-footer,
  .luxury-footer,
  footer#contact {
    padding: 3rem 1rem 1.5rem;
  }

  .footer-brand,
  .footer-brand__name {
    font-size: 1.25rem;
  }

  .social-link-item {
    padding: 0.65rem 1rem;
  }
}

/* ==========================================================================
   9. Focus Visible & Accessibility Enforcements
   ========================================================================== */
.site-footer a:focus-visible {
  outline: 2px solid var(--accent-emerald, #C2A476);
  outline-offset: 3px;
  border-radius: 4px;
  box-shadow: 0 0 12px var(--color-accent-glow, rgba(194, 164, 118, 0.35));
}

@media (prefers-reduced-motion: reduce) {
  .site-footer,
  .site-footer *,
  .social-link-item,
  .footer-link,
  .footer-contact-block,
  .footer-brand__status,
  .social-svg,
  .email-link {
    transition: none !important;
    transform: none !important;
    animation: none !important;
  }

  .footer-brand__status .btn-dot {
    animation: none !important;
  }
}