/**
 * CECCM Footer Styles
 * 
 * Modern glassmorphic footer styles using design tokens.
 * 
 * @version 1.0.0
 * @date 2026-02-18
 */

/* ============================================
   FOOTER BASE
   ============================================ */
.footer {
  position: relative;
  background: var(--color-bg-dark);
  padding: var(--space-20) 0 0;
  overflow: hidden;
  margin-top: 0;
}

.footer-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.footer-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.15;
}

.footer-orb-1 {
  width: clamp(200px, 30vw, 400px);
  height: clamp(200px, 30vw, 400px);
  background: radial-gradient(
    circle,
    var(--color-accent-cyan) 0%,
    transparent 70%
  );
  bottom: 0;
  left: -100px;
}

.footer-orb-2 {
  width: clamp(175px, 26vw, 350px);
  height: clamp(175px, 26vw, 350px);
  background: radial-gradient(
    circle,
    var(--color-accent-violet) 0%,
    transparent 70%
  );
  top: 0;
  right: -100px;
}

/* ============================================
   FOOTER MAIN GRID
   ============================================ */
.footer-main {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: var(--space-12);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  position: relative;
}

/* Brand Column */
.footer-brand {
  max-width: 300px;
}

.footer-logo {
  display: inline-block;
  margin-bottom: 1rem;
}

.footer-logo img {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.footer-brand h3 {
  font-family: var(--font-display, system-ui);
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(
    135deg,
    var(--color-accent-cyan),
    var(--color-accent-violet)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}

.footer-brand p {
  color: var(--color-text-dark-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

/* Social Links */
.social-links {
  display: flex;
  gap: var(--space-3);
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  color: var(--color-text-dark-secondary);
  font-size: 1rem;
  transition: all 0.25s ease;
}

.social-links a:hover {
  background: linear-gradient(
    135deg,
    var(--color-accent-cyan),
    var(--color-accent-violet)
  );
  border-color: transparent;
  color: var(--color-bg-dark);
  transform: translateY(-3px);
}

/* Links Column */
.footer-links h4 {
  font-family: var(--font-display, system-ui);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-dark);
  margin-bottom: 1.5rem;
}

.footer-links ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links ul li {
  margin-bottom: var(--space-3);
}

.footer-links ul li a {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-dark-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: all 0.25s ease;
}

.footer-links ul li a i {
  font-size: 0.7rem;
  color: var(--color-accent-cyan);
  transition: transform 0.25s ease;
}

.footer-links ul li a:hover {
  color: var(--color-text-dark);
  transform: translateX(5px);
}

.footer-links ul li a:hover i {
  transform: translateX(3px);
}

/* Contact Column */
.footer-contact h4 {
  font-family: var(--font-display, system-ui);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-dark);
  margin-bottom: 1.5rem;
}

.footer-contact ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-contact ul li {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
  color: var(--color-text-dark-secondary);
  font-size: 0.9rem;
}

.footer-contact ul li i {
  color: var(--color-accent-cyan);
  font-size: 1rem;
  margin-top: 0.2rem;
}

.footer-contact ul li a {
  color: var(--color-text-dark-secondary);
  text-decoration: none;
  transition: color 0.25s ease;
}

.footer-contact ul li a:hover {
  color: var(--color-accent-cyan);
}

/* ============================================
   NEWSLETTER
   ============================================ */
.footer-newsletter {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  padding: 2.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.newsletter-content h4 {
  font-family: var(--font-display, system-ui);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-dark);
  margin-bottom: var(--space-2);
}

.newsletter-content p {
  color: var(--color-text-dark-secondary);
  font-size: 0.9rem;
  margin: 0;
}

.newsletter-form {
  flex-shrink: 0;
}

.newsletter-form .input-wrapper {
  display: flex;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.25s ease;
}

.newsletter-form .input-wrapper:focus-within {
  border-color: var(--color-accent-cyan);
}

.newsletter-form input {
  flex: 1;
  padding: 0.875rem var(--space-5);
  background: transparent;
  border: none;
  color: var(--color-text-dark);
  font-size: 0.9rem;
  min-width: 0;
}

.newsletter-form input::placeholder {
  color: var(--color-text-dark-muted);
}

.newsletter-form input:focus {
  outline: none;
}

.newsletter-form input:focus-visible {
  outline: var(--focus-ring-width, 3px) solid
    var(--focus-color-primary, #06b6d4);
  outline-offset: var(--focus-ring-offset, 3px);
  box-shadow: var(--focus-ring-shadow, 0 0 0 6px rgba(6, 182, 212, 0.25));
}

.newsletter-form button {
  padding: 0 var(--space-6);
  background: linear-gradient(
    135deg,
    var(--color-accent-cyan),
    var(--color-accent-violet)
  );
  border: none;
  color: var(--color-bg-dark);
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.25s ease;
}

.newsletter-form button:hover {
  background: linear-gradient(
    135deg,
    var(--color-accent-cyan-dark),
    var(--color-accent-violet-dark)
  );
}

/* ============================================
   FOOTER BOTTOM BAR
   ============================================ */
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6) 0;
  gap: var(--space-4);
}

.footer-bottom p {
  color: var(--color-text-dark-muted);
  font-size: 0.875rem;
  margin: 0;
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-8);
}

.footer-bottom-links a {
  color: var(--color-text-dark-muted);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.25s ease;
}

.footer-bottom-links a:hover {
  color: var(--color-accent-cyan);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1100px) {
  .footer-main {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-brand {
    grid-column: span 2;
    max-width: none;
  }
}

@media (max-width: 768px) {
  .footer {
    padding: var(--space-12) 0 0;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer-brand {
    grid-column: span 1;
    text-align: center;
  }

  .footer-brand p {
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
  }

  .social-links {
    justify-content: center;
  }

  .footer-links h4,
  .footer-contact h4 {
    text-align: center;
  }

  .footer-links ul li a {
    justify-content: center;
  }

  .footer-contact ul li {
    justify-content: center;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-2);
  }

  .footer-contact ul li i {
    margin-top: 0;
  }

  .footer-newsletter {
    flex-direction: column;
    text-align: center;
    gap: var(--space-6);
  }

  .newsletter-form {
    width: 100%;
  }

  .newsletter-form .input-wrapper {
    flex-direction: column;
  }

  .newsletter-form input {
    min-width: auto;
    width: 100%;
    padding: var(--space-4);
  }

  .newsletter-form button {
    width: 100%;
    padding: var(--space-4);
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: var(--space-4);
  }

  .footer-bottom-links {
    gap: var(--space-6);
    flex-wrap: wrap;
    justify-content: center;
  }
}

/* Extra small screens */
@media (max-width: 480px) {
  .footer {
    padding: var(--space-8) 0 0;
  }

  .footer-brand h3 {
    font-size: 1.25rem;
  }

  .footer-brand p {
    font-size: 0.875rem;
  }

  .social-links a {
    width: 36px;
    height: 36px;
    font-size: 0.9rem;
  }

  .footer-links h4,
  .footer-contact h4 {
    font-size: 1rem;
  }

  .footer-links ul li a,
  .footer-contact ul li {
    font-size: 0.875rem;
  }

  .newsletter-content h4 {
    font-size: 1rem;
  }

  .newsletter-content p {
    font-size: 0.875rem;
  }

  .footer-bottom p,
  .footer-bottom-links a {
    font-size: 0.8rem;
  }

  .footer-bottom-links {
    gap: var(--space-4);
  }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

/* Focus visible for keyboard navigation */
.footer-links ul li a:focus-visible,
.footer-contact ul li a:focus-visible,
.social-links a:focus-visible,
.footer-bottom-links a:focus-visible {
  outline: var(--focus-ring-width, 3px) solid
    var(--focus-color-primary, #06b6d4);
  outline-offset: var(--focus-ring-offset, 3px);
  border-radius: var(--radius-sm);
}

.newsletter-form button:focus-visible {
  outline: var(--focus-ring-width, 3px) solid
    var(--focus-color-primary, #06b6d4);
  outline-offset: var(--focus-ring-offset, 3px);
}

/* Screen reader only */
.footer .sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .social-links a:hover {
    transform: none;
  }

  .footer-links ul li a:hover {
    transform: none;
  }

  .footer-links ul li a:hover i {
    transform: none;
  }
}