/* ==========================================================================
   ĐỊNH KIỂU THÀNH PHẦN FOOTER (BEM: .footer)
   Bố cục 4 cột chân trang, thông tin liên hệ và bản quyền đồ án IE104
   ========================================================================== */

.footer {
  background-color: var(--color-bg-subtle, #EFF4FF);
  border-top: 1px solid var(--color-border-light, rgba(226, 191, 178, 0.4));
  padding: 40px 0 0 0;
  margin-top: auto;
  color: var(--color-text-muted, #565E74);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1.1fr 1.2fr;
  gap: 48px;
  padding-bottom: 32px;
}

/* Cột 1: Thông tin thương hiệu */
.footer__col--brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Kích thước logo chân trang chuẩn thiết kế Figma: 122x54 */
.footer__logo {
  display: inline-block;
  width: 122px;
  height: 54px;
}

.footer__logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.footer__desc {
  font-size: 14px;
  line-height: 22px;
  color: var(--color-text-muted, #565E74);
}

.footer__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
  max-width: 292px;
}

.footer__badge-tag {
  background-color: var(--color-bg-tag, #E5EEFF);
  color: var(--color-text-subtle, #5C647A);
  padding: 5px 10px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.036em;
}

/* Cột 2 & Cột 3: Tiêu đề danh sách liên kết */
.footer__title {
  font-family: var(--font-family-heading, 'Space Grotesk', sans-serif);
  font-size: 16px;
  font-weight: 700;
  line-height: 24px;
  color: var(--color-text-main, #0B1C30);
  margin-bottom: 14px;
}

.footer__links-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer__link {
  font-size: 14px;
  line-height: 20px;
  color: var(--color-text-muted, #565E74);
  transition: color 0.2s ease, transform 0.15s ease;
  display: inline-block;
}

.footer__link:hover {
  color: var(--color-primary, #EA580C);
  transform: translateX(3px);
}

/* Cột 4: Danh sách thông tin liên hệ */
.footer__contact-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.footer__contact-icon {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  margin-top: 3px;
}

.footer__hotline-box {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer__hotline-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-main, #0B1C30);
}

.footer__hotline-number {
  font-family: var(--font-family-heading, 'Space Grotesk', sans-serif);
  font-size: 20px;
  font-weight: 700;
  line-height: 26px;
  color: var(--color-primary-dark, #A33900);
  letter-spacing: -0.01em;
}

.footer__hotline-time {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-muted, #565E74);
}

.footer__contact-text {
  font-size: 14px;
  line-height: 20px;
  color: var(--color-text-muted, #565E74);
}

.footer__contact-text strong {
  color: var(--color-text-main, #0B1C30);
}

/* Thanh thông tin bản quyền dưới cùng (Bottom Bar) */
.footer__bottom {
  border-top: 1px solid var(--color-border-light, rgba(226, 191, 178, 0.4));
  padding: 20px 0;
}

.footer__bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  color: var(--color-text-muted, #565E74);
}

.footer__copyright-sub {
  font-size: 12px;
  font-weight: 600;
  color: rgba(86, 94, 116, 0.8);
}

/* Tối ưu hiển thị đa màn hình (Responsive Design) */
@media (max-width: 1024px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .footer__grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer__bottom-inner {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}