/* ═══════════════════════════════════════════════════════════════════════════════
   FOOTER - 3-Column Responsive Grid
   ═══════════════════════════════════════════════════════════════════════════════ */

#footer {
  background:
    radial-gradient(900px 220px at -10% 0%, rgba(59, 130, 246, 0.12), transparent 62%),
    radial-gradient(720px 220px at 110% 0%, rgba(96, 165, 250, 0.1), transparent 60%),
    var(--color-ink);
  border-top: 1px solid var(--color-border-soft);
  padding: clamp(2rem, 4vw, 3rem) clamp(var(--spacing-lg), 5vw, var(--spacing-3xl));
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-size-sm);
  margin-top: auto;
}

.foot-top {
  max-width: 1280px;
  margin: 0 auto var(--spacing-2xl);
  padding-bottom: var(--spacing-2xl);
  display: grid;
  grid-template-columns: minmax(240px, 1fr) minmax(420px, 2fr);
  gap: clamp(1.2rem, 3vw, 2.4rem);
  align-items: start;
  border-bottom: 1px solid var(--color-border-soft);
}

.foot-brand {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.foot-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-white);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: var(--font-weight-bold);
  transition: opacity var(--duration-normal);
}

.foot-logo:hover {
  opacity: 0.8;
}

.foot-logo-mark {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  background: var(--color-blue-2);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 16px rgba(37, 99, 235, 0.5);
}

.foot-logo-mark svg {
  width: 20px;
  height: 20px;
  fill: white;
}

.foot-tagline {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
  max-width: 360px;
  line-height: 1.65;
  margin: 0;
}

.foot-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.foot-links a,
.foot-meta {
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.62);
  text-decoration: none;
  line-height: 1.5;
}

.foot-meta a {
  color: inherit;
  text-decoration: none;
}

.foot-meta a:hover {
  color: #ffffff;
}

.foot-links a:hover {
  color: #ffffff;
}

.foot-copy {
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.4);
}

/* ════ FOOTER GRID ════ */
.foot-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1rem, 2.5vw, 2rem);
}

.foot-col {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.foot-col-title {
  font-size: 0.72rem;
  font-weight: var(--font-weight-bold);
  color: rgba(255, 255, 255, 0.92);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0;
  margin-bottom: 0.55rem;
}

.foot-col-link {
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  transition: color var(--duration-normal);
  font-size: var(--font-size-sm);
  display: inline-block;
}

.foot-col-link:hover {
  color: var(--color-white);
}

.foot-col-text {
  color: rgba(255, 255, 255, 0.65);
  font-size: var(--font-size-sm);
  line-height: 1.8;
  margin: 0;
}

/* ════ FOOTER BOTTOM ════ */
.foot-bottom {
  max-width: 1280px;
  margin: 0 auto;
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
}

.foot-copyright {
  color: rgba(255, 255, 255, 0.5);
  font-size: var(--font-size-xs);
}

.foot-disclaimer {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.foot-disclaimer-link {
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  font-size: var(--font-size-xs);
  transition: color var(--duration-normal);
}

.foot-disclaimer-link:hover {
  color: rgba(255, 255, 255, 0.8);
}

/* ════ RESPONSIVE ════ */
@media (max-width: 1024px) {
  #footer {
    padding: var(--spacing-3xl) clamp(var(--spacing-lg), 5vw, var(--spacing-2xl));
  }

  .foot-top {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  .foot-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--spacing-xl);
  }
}

@media (max-width: 768px) {
  #footer {
    padding: var(--spacing-2xl) var(--spacing-lg);
  }

  .foot-top {
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
  }

  .foot-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-2xl);
  }

  .foot-bottom {
    justify-content: flex-start;
    gap: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  #footer {
    padding: 1.3rem var(--spacing-md) 1.1rem;
  }

  .foot-top {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
  }

  .foot-logo { font-size: 1.1rem; }

  .foot-logo-mark {
    width: 32px;
    height: 32px;
  }

  .foot-logo-mark svg {
    width: 16px;
    height: 16px;
  }

  .foot-tagline {
    font-size: 0.82rem;
    opacity: 0.86;
  }

  .foot-col-title {
    font-size: var(--font-size-xs);
  }

  .foot-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .foot-links a,
  .foot-meta {
    font-size: 0.82rem;
  }

  .foot-copyright {
    font-size: var(--font-size-xs);
  }
}