/* ════════════════════════════════════════════════════════
   BRITOL GROUP — Footer & Bottom Content
   ════════════════════════════════════════════════════════ */

.mailing-list {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--blue-600), var(--blue-700));
  position: relative;
  overflow: hidden;
}

.mailing-list::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 255, 255, .06), transparent 70%);
  top: -200px;
  left: -100px;
  border-radius: 50%;
}

.mailing-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.mailing-content h2 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 12px;
}

.mailing-content > p {
  color: rgba(255, 255, 255, .75);
  margin-bottom: 32px;
  font-size: .98rem;
}

.mailing-form {
  display: flex;
  gap: 12px;
  max-width: 480px;
  margin: 0 auto;
}

.mailing-form input {
  flex: 1;
  padding: 16px 22px;
  border: 2px solid rgba(255, 255, 255, .2);
  border-radius: 50px;
  background: rgba(255, 255, 255, .1);
  backdrop-filter: blur(10px);
  color: var(--white);
  font-family: var(--font-body);
  font-size: .95rem;
  outline: none;
  transition: var(--transition);
}

.mailing-form input::placeholder {
  color: rgba(255, 255, 255, .5);
}

.mailing-form input:focus {
  border-color: rgba(255, 255, 255, .5);
  background: rgba(255, 255, 255, .15);
}

.mailing-form .btn {
  padding: 16px 32px;
  background: var(--white);
  color: var(--blue-700);
  font-weight: 700;
}

.mailing-form .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, .15);
}

/* ── Footer ───────────────────────────────── */
.footer {
  background: var(--gray-900);
  color: rgba(255, 255, 255, .6);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.footer-brand p {
  margin-top: 16px;
  font-size: .9rem;
  line-height: 1.7;
}

.footer-brand .nav-logo {
  margin-bottom: 4px;
}

.footer h4 {
  color: var(--white);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.footer-links a {
  display: block;
  padding: 6px 0;
  font-size: .9rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--blue-400);
  transform: translateX(4px);
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 0;
  font-size: .9rem;
}

.footer-bottom {
  text-align: center;
  padding: 24px 0;
  font-size: .85rem;
}

/* ── Back To Top ──────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--blue-500), var(--blue-600));
  color: var(--white);
  border: none;
  border-radius: 14px;
  font-size: 1.3rem;
  cursor: pointer;
  box-shadow: var(--shadow-blue);
  transition: var(--transition);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
}